Movatterモバイル変換


[0]ホーム

URL:


JP2009041034A - Manufacturing method of adhesive sheet - Google Patents

Manufacturing method of adhesive sheet
Download PDF

Info

Publication number
JP2009041034A
JP2009041034AJP2008257412AJP2008257412AJP2009041034AJP 2009041034 AJP2009041034 AJP 2009041034AJP 2008257412 AJP2008257412 AJP 2008257412AJP 2008257412 AJP2008257412 AJP 2008257412AJP 2009041034 AJP2009041034 AJP 2009041034A
Authority
JP
Japan
Prior art keywords
pressure
sensitive adhesive
adhesive sheet
base material
resin component
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2008257412A
Other languages
Japanese (ja)
Other versions
JP5009887B2 (en
Inventor
Manabu Nakada
学 中田
Hirofumi Hashimoto
洋文 橋本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dexerials Corp
Original Assignee
Sony Chemical and Information Device Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sony Chemical and Information Device CorpfiledCriticalSony Chemical and Information Device Corp
Priority to JP2008257412ApriorityCriticalpatent/JP5009887B2/en
Publication of JP2009041034ApublicationCriticalpatent/JP2009041034A/en
Application grantedgrantedCritical
Publication of JP5009887B2publicationCriticalpatent/JP5009887B2/en
Anticipated expirationlegal-statusCritical
Expired - Lifetimelegal-statusCriticalCurrent

Links

Images

Landscapes

Abstract

<P>PROBLEM TO BE SOLVED: To provide an adhesive sheet which is high in strength and excellent in flexibility. <P>SOLUTION: The mother material of an adhesive composition contains a first resin component comprising t-butyl acrylate and a second resin component comprising phenoxyethyl acrylate, wherein the first and second resin components are added each at an amount of 2.5 to 20 wt.% or less relative to the whole mother material. The mother material can be polymerized by ultraviolet light to provide a polymer which is high in strength and excellent in flexibility. Thus, the adhesive sheet 50 having adhesive layers 53, 57 comprising the cured product of the adhesive composition is excellent in adhesiveness to a curving surface. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

Translated fromJapanese

本発明は粘着シートを構成する粘着剤組成物にかかり、特に、紫外線のような活性エネルギー線の照射により硬化し、粘着性を発現する粘着剤組成物に関する。  The present invention relates to a pressure-sensitive adhesive composition constituting a pressure-sensitive adhesive sheet, and particularly relates to a pressure-sensitive adhesive composition that is cured by irradiation with an active energy ray such as ultraviolet rays and develops pressure-sensitive adhesive properties.

従来より、粘着シートを構成する粘着剤組成物として紫外線照射により硬化する紫外線硬化型の粘着剤組成物が用いられている。
紫外線硬化型の粘着剤組成物の一例として、特開平9−40928にアクリル系重合体を母材とする粘着剤組成物が開示されている。該粘着剤組成物は、紫外線によってアクリル系重合体が更に重合することで硬化するので、有機溶剤を用いる必要がないだけではなく、粘着剤組成物の硬化によって得られる粘着シートの熱安定性や凝集力が高い。
Conventionally, as the pressure-sensitive adhesive composition constituting the pressure-sensitive adhesive sheet, an ultraviolet curable pressure-sensitive adhesive composition that is cured by ultraviolet irradiation has been used.
As an example of an ultraviolet curable pressure-sensitive adhesive composition, JP-A-9-40928 discloses a pressure-sensitive adhesive composition having an acrylic polymer as a base material. The pressure-sensitive adhesive composition is cured by further polymerization of the acrylic polymer by ultraviolet rays, so that not only does the organic solvent need not be used, but also the thermal stability of the pressure-sensitive adhesive sheet obtained by curing the pressure-sensitive adhesive composition High cohesion.

しかしながら、上記のような粘着シートは強度が低く、接着性も充分でない。また、粘着シートの柔軟性も充分でないため、粘着シートの被着体の被接着面が曲面である場合は粘着シートが曲面に追従できず、粘着シートの端部が被接着面から浮いてしまう。  However, the pressure-sensitive adhesive sheet as described above has low strength and insufficient adhesion. In addition, since the adhesive sheet is not flexible enough, when the adherend surface of the adherend of the adhesive sheet is a curved surface, the adhesive sheet cannot follow the curved surface, and the end of the adhesive sheet floats from the adherend surface. .

また、上記粘着剤組成物では、少なくとも2種類のアクリルモノマーと、ビニル単量体とを予め重合させアクリルポリマーを形成した後、該アクリルポリマーに光重合開始剤を添加して粘着剤組成物としているため、粘着剤組成物の製造工程が煩雑である。また、該粘着剤組成物はアクリルポリマーを主成分とするため粘度が高く、粘着剤組成物を塗布する際には加熱溶融する必要がある(ホットメルト法)。ホットメルト法に必要な設備は簡易であるが、粘着剤組成物の粘度が高いため取り扱いが困難である。
特表2001−503811号公報特開昭58−196277号公報特開昭63−046281号公報特開2000−109770号公報特開平4−161474号公報特開平4−87635号公報特開平3−250081号公報特開平1−272676号公報
In the above-mentioned pressure-sensitive adhesive composition, at least two kinds of acrylic monomers and a vinyl monomer are previously polymerized to form an acrylic polymer, and then a photopolymerization initiator is added to the acrylic polymer to form a pressure-sensitive adhesive composition. Therefore, the production process of the pressure-sensitive adhesive composition is complicated. Moreover, since this adhesive composition has an acrylic polymer as a main component, its viscosity is high, and when applying an adhesive composition, it is necessary to heat-melt (hot melt method). The equipment required for the hot melt method is simple, but it is difficult to handle because the viscosity of the pressure-sensitive adhesive composition is high.
JP-T-2001-503811 JP 58-196277 A JP-A-63-046881 JP 2000-109770 A JP-A-4-161474 JP-A-4-87635 JP-A-3-250081 JP-A-1-272676

本発明は上記従来技術の不都合を解決するために創作されたものであり、その目的は、硬化した後の強度と接着性に優れ、かつ、硬化した後の柔軟性が高い紫外線硬化型の粘着剤組成物を提供することにある。  The present invention was created in order to solve the disadvantages of the prior art described above, and its purpose is to provide an ultraviolet curable adhesive having excellent strength and adhesiveness after curing and high flexibility after curing. It is to provide an agent composition.

本発明者等が鋭意検討を重ねた結果、粘着剤組成物の母材となる樹脂成分に特定の種類のアクリルモノマーを特定の配合比率で添加することによって、粘着シートの強度や、接着性だけではなく、接着シートの柔軟性も高くなることを見出した。  As a result of intensive studies by the present inventors, by adding a specific type of acrylic monomer at a specific blending ratio to the resin component that becomes the base material of the pressure-sensitive adhesive composition, only the strength and adhesiveness of the pressure-sensitive adhesive sheet are obtained. Instead, the present inventors have found that the flexibility of the adhesive sheet is increased.

かかる知見に基づいてなされた請求項1記載の発明は、少なくとも2層の粘着層を有し、前記粘着層の間に基材が配置された粘着シートを製造する粘着シートの製造方法であって、支持体の少なくとも一方の面に粘着剤組成物を塗布し、第一の塗布層を形成する工程と、前記第一の塗布層上に前記基材を配置する工程と、前記基材上に粘着剤組成物を塗布し、第二の塗布層を形成する工程と、前記支持体の配置された側の面と、前記第二の塗布層が配置された側の面のいずれか一方又は両方に紫外線を照射し、前記第一、第二の塗布層を硬化させて第一、第二の粘着層を形成する工程とを有する粘着シートの製造方法である。
請求項2記載の発明は、少なくとも2層の粘着層を有し、前記粘着層の間に基材が配置された粘着シートを製造する粘着シートの製造方法であって、支持体の少なくとも一方の面に粘着剤組成物を塗布し、第一の塗布層を形成する工程と、前記基材の一方の面に粘着剤組成物を塗布し、第二の塗布層を形成する工程と、前記支持体上の前記第一の塗布層表面と、前記基材の前記第二の塗布層が形成されていない面とを互いに密着させる工程と、前記支持体の配置された側の面と、前記第二の塗布層が配置された側の面のいずれか一方又は両方に紫外線を照射し、前記第一、第二の塗布層を硬化させて第一、第二の粘着層を形成する工程とを有する粘着シートの製造方法である。
請求項3記載の発明は、前記粘着剤組成物に、樹脂成分からなる母材と、紫外線照射によって前記母材を重合させる光重合開始剤とを含有させる請求項1又は請求項2のいずれか1項記載の粘着シートの製造方法であって、前記母材に、t−ブチルアクリレートからなる第一の樹脂成分と、フェノキシエチルアクリレートからなる第二の樹脂成分とを含有させ、前記第一の樹脂成分の添加量を前記母材全体の2.5重量%以上20重量%以下にし、前記第二の樹脂成分の添加量を前記母材全体の2.5重量%以上20重量%以下にする粘着シートの製造方法である。
請求項4記載の発明は、請求項3記載の粘着シートの製造方法であって、前記母材に、アクリルモノマーからなる樹脂液と、アクリルモノマーとアクリルポリマーとを混合した樹脂液のいずれか一方を主成分とする第三の樹脂成分を含有させる粘着シートの製造方法である。
請求項5記載の発明は、請求項4記載の粘着シートの製造方法であって、前記アクリルモノマーを、2−エチルへキシルアクリレートとブチルアクリレートのいずれか一方又は両方で構成する粘着シートの製造方法である。
請求項6記載の発明は、請求項4又は請求項5のいずれか1項記載の粘着シートの製造方法であって、前記アクリルポリマーを、2−エチルへキシルアクリレートと、ブチルアクリレートと、アクリル酸とが重合した重合物で構成させる粘着シートの製造方法である。
請求項7記載の発明は、請求項4乃至請求項6のいずれか1項記載の粘着シートの製造方法であって、前記第三の樹脂成分に、アクリル酸を添加する粘着シートの製造方法である。
請求項8記載の発明は、請求項3乃至請求項7のいずれか1項記載の粘着シートの製造方法であって、前記母材の重合体に架橋構造を形成する架橋剤と、前記母材の重合体に粘着性を付与する粘着付与剤とを、前記粘着剤組成物に添加する粘着シートの製造方法。
請求項9記載の発明は、請求項8記載の粘着シートの製造方法であって、前記架橋剤に架橋主剤としてイソシアネート化合物を含有させる粘着シートの製造方法である。
請求項10記載の発明は、請求項8又は請求項9のいずれか1項記載の粘着シートの製造方法であって、前記架橋剤には、架橋助剤としてヒドロキシプロピルアクリレートを添加する粘着シートの製造方法である。
請求項11記載の発明は、請求項8乃至請求項10のいずれか1項記載の粘着シートの製造方法であって、前記粘着付与剤にロジンと、テルペンフェノールのいずれか一方又は両方を含有させる粘着シートの製造方法である。
請求項12記載の発明は、少なくとも2層の粘着層を有し、前記粘着層の間に基材が配置された粘着シートを製造する粘着シートの製造方法であって、支持体の少なくとも一方の面に粘着剤組成物を塗布し、第一の塗布層を形成する工程と、前記第一の塗布層上に前記基材を配置する工程と、前記基材上に粘着剤組成物を塗布し、第二の塗布層を形成する工程と、前記支持体の配置された側の面と、前記第二の塗布層が配置された側の面のいずれか一方又は両方に紫外線を照射し、前記第一、第二の塗布層を硬化させて第一、第二の粘着層を形成する工程と、前記第一、第二の粘着層を加熱する工程とを有し、前記粘着剤組成物に、樹脂成分からなる母材と、紫外線照射によって前記母材を重合させる光重合開始剤とを含有させ、前記母材に、t−ブチルアクリレートからなる第一の樹脂成分と、フェノキシエチルアクリレートからなる第二の樹脂成分とを含有させ、前記第一の樹脂成分の添加量を前記母材全体の2.5重量%以上20重量%以下にし、前記第二の樹脂成分の添加量を前記母材全体の2.5重量%以上20重量%以下にし、前記母材の重合体に、架橋構造を形成する架橋剤と、前記母材の重合体に粘着性を付与する粘着付与剤とを、前記粘着剤組成物に添加し、前記架橋剤に架橋主剤としてイソシアネート化合物を含有させる粘着シートの製造方法である。
請求項13記載の発明は、少なくとも2層の粘着層を有し、前記粘着層の間に基材が配置された粘着シートを製造する粘着シートの製造方法であって、支持体の少なくとも一方の面に粘着剤組成物を塗布し、第一の塗布層を形成する工程と、前記基材の一方の面に粘着剤組成物を塗布し、第二の塗布層を形成する工程と、前記支持体上の前記第一の塗布層表面と、前記基材の前記第二の塗布層が形成されていない面とを互いに密着させる工程と、前記支持体の配置された側の面と、前記第二の塗布層が配置された側の面のいずれか一方又は両方に紫外線を照射し、前記第一、第二の塗布層を硬化させて第一、第二の粘着層を形成する工程と、前記第一、第二の粘着層を加熱する工程とを有し、前記粘着剤組成物に、樹脂成分からなる母材と、紫外線照射によって前記母材を重合させる光重合開始剤とを含有させ、前記母材に、t−ブチルアクリレートからなる第一の樹脂成分と、フェノキシエチルアクリレートからなる第二の樹脂成分とを含有させ、前記第一の樹脂成分の添加量を前記母材全体の2.5重量%以上20重量%以下にし、前記第二の樹脂成分の添加量を前記母材全体の2.5重量%以上20重量%以下にし、前記母材の重合体に、架橋構造を形成する架橋剤と、前記母材の重合体に粘着性を付与する粘着付与剤とを、前記粘着剤組成物に添加し、前記架橋剤に架橋主剤としてイソシアネート化合物を含有させる粘着シートの製造方法である。
請求項14記載の発明は、請求項12又は請求項13のいずれか1項記載の粘着シートの製造方法であって、前記母材に、アクリルモノマーからなる樹脂液と、アクリルモノマーとアクリルポリマーとを混合した樹脂液のいずれか一方を主成分とする第三の樹脂成分を含有させる粘着シートの製造方法である。
請求項15記載の発明は、請求項14記載の粘着シートの製造方法であって、前記アクリルモノマーを、2−エチルへキシルアクリレートとブチルアクリレートのいずれか一方又は両方で構成する粘着シートの製造方法である。
請求項16記載の発明は、請求項14又は請求項15のいずれか1項記載の粘着シートの製造方法であって、前記アクリルポリマーを、2−エチルへキシルアクリレートと、ブチルアクリレートと、アクリル酸とが重合した重合物で構成させる粘着シートの製造方法である。
請求項17記載の発明は、請求項14乃至請求項16のいずれか1項記載の粘着シートの製造方法であって、前記第三の樹脂成分に、アクリル酸を添加する粘着シートの製造方法である。
請求項18記載の発明は、請求項12乃至請求項17のいずれか1項記載の粘着シートの製造方法であって、前記架橋剤には、架橋助剤としてヒドロキシプロピルアクリレートを添加する粘着シートの製造方法である。
請求項19記載の発明は、請求項12乃至請求項18のいずれか1項記載の粘着シートの製造方法であって、前記粘着付与剤にロジンと、テルペンフェノールのいずれか一方又は両方を含有させる粘着シートの製造方法である。
請求項20記載の発明は、請求項12乃至請求項19のいずれか1項記載の粘着シートの製造方法であって、前記第一、第二の粘着層を24時間以上加熱する粘着シートの製造方法である。
The invention according to claim 1 made based on such knowledge is a method for producing a pressure-sensitive adhesive sheet comprising a pressure-sensitive adhesive sheet having at least two pressure-sensitive adhesive layers and having a substrate disposed between the pressure-sensitive adhesive layers. Applying a pressure-sensitive adhesive composition to at least one surface of the support, forming a first coating layer, placing the substrate on the first coating layer, and on the substrate Either or both of the step of applying the pressure-sensitive adhesive composition to form the second coating layer, the surface on the side where the support is disposed, and the surface on the side where the second coating layer is disposed And a step of curing the first and second coating layers to form the first and second adhesive layers.
Invention of Claim 2 is a manufacturing method of the adhesive sheet which has an adhesive layer of at least 2 layers, and manufactures the adhesive sheet by which the base material was arrange | positioned between the said adhesive layers, Comprising: At least one of a support body Applying a pressure-sensitive adhesive composition to a surface to form a first coating layer; applying a pressure-sensitive adhesive composition to one surface of the substrate to form a second coating layer; and the support. A step of bringing the first coating layer surface on the body into contact with a surface of the base material on which the second coating layer is not formed, a surface on the side where the support is disposed, and the first Irradiating one or both of the surfaces on which the two coating layers are disposed with ultraviolet rays, curing the first and second coating layers, and forming the first and second adhesive layers; It is a manufacturing method of the adhesive sheet which has.
Invention of Claim 3 makes the said adhesive composition contain the base material which consists of a resin component, and the photoinitiator which polymerizes the said base material by ultraviolet irradiation, Either of Claim 1 or Claim 2 It is a manufacturing method of the adhesive sheet of Claim 1, Comprising: The said 1st resin component which consists of t-butyl acrylate and the 2nd resin component which consists of phenoxyethyl acrylate are contained in the said base material, Said 1st The addition amount of the resin component is 2.5 wt% or more and 20 wt% or less of the whole base material, and the addition amount of the second resin component is 2.5 wt% or more and 20 wt% or less of the whole base material. It is a manufacturing method of an adhesive sheet.
Invention of Claim 4 is a manufacturing method of the adhesive sheet of Claim 3, Comprising: Either the resin liquid which consists of an acrylic monomer in the said base material, and the resin liquid which mixed the acrylic monomer and the acrylic polymer It is a manufacturing method of the adhesive sheet which contains the 3rd resin component which has as a main component.
Invention of Claim 5 is a manufacturing method of the adhesive sheet of Claim 4, Comprising: The manufacturing method of the adhesive sheet which comprises the said acrylic monomer in either one or both of 2-ethylhexyl acrylate and butyl acrylate It is.
Invention of Claim 6 is a manufacturing method of the adhesive sheet of any one of Claim 4 or Claim 5, Comprising: The said acrylic polymer is 2-ethylhexyl acrylate, butyl acrylate, and acrylic acid. Is a method for producing a pressure-sensitive adhesive sheet composed of a polymerized product.
Invention of Claim 7 is a manufacturing method of the adhesive sheet of any one of Claim 4 thru | or 6, Comprising: It is a manufacturing method of the adhesive sheet which adds acrylic acid to said 3rd resin component. is there.
Invention of Claim 8 is a manufacturing method of the adhesive sheet of any one of Claim 3 thru | or 7, Comprising: The crosslinking agent which forms a crosslinked structure in the polymer of the said base material, The said base material The manufacturing method of the adhesive sheet which adds the tackifier which provides adhesiveness to the polymer of this to the said adhesive composition.
The invention according to claim 9 is the method for producing a pressure-sensitive adhesive sheet according to claim 8, wherein the crosslinking agent contains an isocyanate compound as a crosslinking main agent.
Invention ofClaim 10 is a manufacturing method of the adhesive sheet of any one of Claim 8 or Claim 9, Comprising: The said crosslinking agent of the adhesive sheet which adds a hydroxypropyl acrylate as a crosslinking adjuvant It is a manufacturing method.
Invention ofClaim 11 is a manufacturing method of the adhesive sheet of any one of Claim 8 thru | or 10, Comprising: The rosin and either one or both of terpene phenol are made to contain in the said tackifier. It is a manufacturing method of an adhesive sheet.
Invention ofClaim 12 is a manufacturing method of the adhesive sheet which has an adhesive layer of at least 2 layers, and manufactures the adhesive sheet by which the base material was arrange | positioned between the said adhesive layers, Comprising: At least one of a support body Applying a pressure-sensitive adhesive composition to the surface, forming a first coating layer, placing the substrate on the first coating layer, and applying the pressure-sensitive adhesive composition on the substrate. Irradiating ultraviolet rays to one or both of the step of forming the second coating layer, the surface on the side where the support is disposed, and the surface on the side where the second coating layer is disposed, The first and second coating layers are cured to form first and second adhesive layers, and the first and second adhesive layers are heated, and the adhesive composition has A base material composed of a resin component and a photopolymerization initiator that polymerizes the base material by ultraviolet irradiation, A first resin component made of t-butyl acrylate and a second resin component made of phenoxyethyl acrylate are contained, and the amount of the first resin component added is 2.5% by weight or more of the whole base material. Less than wt%, the amount of the second resin component added is 2.5 wt% to 20 wt% of the whole base material, and the cross-linking agent that forms a cross-linked structure in the polymer of the base material, It is a method for producing a pressure-sensitive adhesive sheet in which a tackifier that imparts tackiness to a polymer of a base material is added to the pressure-sensitive adhesive composition, and the cross-linking agent contains an isocyanate compound as a cross-linking main agent.
Invention of Claim 13 is a manufacturing method of the adhesive sheet which manufactures the adhesive sheet which has an adhesive layer of at least 2 layers, and has arrange | positioned the base material between the said adhesive layers, Comprising: At least one of a support body Applying a pressure-sensitive adhesive composition to a surface to form a first coating layer; applying a pressure-sensitive adhesive composition to one surface of the substrate to form a second coating layer; and the support. A step of bringing the first coating layer surface on the body into contact with a surface of the base material on which the second coating layer is not formed, a surface on the side where the support is disposed, and the first Irradiating either one or both of the surfaces on which the two coating layers are disposed with ultraviolet rays, curing the first and second coating layers to form the first and second adhesive layers; Heating the first and second pressure-sensitive adhesive layers, and the base material made of a resin component in the pressure-sensitive adhesive composition, A photopolymerization initiator that polymerizes the base material by irradiation with external rays, and the base material contains a first resin component made of t-butyl acrylate and a second resin component made of phenoxyethyl acrylate. The addition amount of the first resin component is 2.5 wt% or more and 20 wt% or less of the whole base material, and the addition amount of the second resin component is 2.5 wt% or more and 20 wt% or less of the whole base material. Less than wt%, a cross-linking agent that forms a cross-linked structure in the polymer of the base material, and a tackifier that imparts tackiness to the polymer of the base material are added to the pressure-sensitive adhesive composition, This is a method for producing a pressure-sensitive adhesive sheet in which a crosslinking agent contains an isocyanate compound as a crosslinking main agent.
Invention ofClaim 14 is a manufacturing method of the adhesive sheet of any one ofClaim 12 or Claim 13, Comprising: In the said base material, the resin liquid which consists of an acrylic monomer, an acrylic monomer, an acrylic polymer, It is the manufacturing method of the adhesive sheet which contains the 3rd resin component which has either one of the resin liquids mixed as a main component.
Invention ofClaim 15 is a manufacturing method of the adhesive sheet ofClaim 14, Comprising: The manufacturing method of the adhesive sheet which comprises the said acrylic monomer in either one or both of 2-ethylhexyl acrylate and butyl acrylate It is.
Invention ofClaim 16 is a manufacturing method of the adhesive sheet of any one ofClaim 14 orClaim 15, Comprising: The said acrylic polymer is 2-ethylhexyl acrylate, butyl acrylate, and acrylic acid. Is a method for producing a pressure-sensitive adhesive sheet composed of a polymerized product.
Invention ofClaim 17 is a manufacturing method of the adhesive sheet of any one ofClaim 14 thru | or 16, Comprising: It is a manufacturing method of the adhesive sheet which adds acrylic acid to said 3rd resin component. is there.
Invention ofClaim 18 is a manufacturing method of the adhesive sheet of any one ofClaim 12 thru | or 17, Comprising: The said adhesive agent of the adhesive sheet which adds a hydroxypropyl acrylate as a crosslinking adjuvant to the said crosslinking agent. It is a manufacturing method.
Invention ofClaim 19 is a manufacturing method of the adhesive sheet of any one ofClaim 12 thru | or 18, Comprising: The said tackifier is made to contain any one or both of rosin and terpene phenol. It is a manufacturing method of an adhesive sheet.
Invention ofClaim 20 is a manufacturing method of the adhesive sheet of any one ofClaim 12 thru | or 19, Comprising: Manufacture of the adhesive sheet which heats said 1st, 2nd adhesive layer for 24 hours or more Is the method.

尚、第三の樹脂成分に含有されるアクリルモノマーとはアクリレート(アクリル酸エステル)、又はメタクリレートを指す。アクリルポリマーとはアクリルモノマーの重合体を指す。
また、第一の樹脂成分であるt−ブチルアクリレートを下記化学式(1)に示し、第二の樹脂成分であるフェノキシエチルアクリレートを下記化学式(2)に示す。
The acrylic monomer contained in the third resin component refers to acrylate (acrylic ester) or methacrylate. An acrylic polymer refers to a polymer of acrylic monomers.
Further, t-butyl acrylate as the first resin component is shown in the following chemical formula (1), and phenoxyethyl acrylate as the second resin component is shown in the following chemical formula (2).

Figure 2009041034
Figure 2009041034

Figure 2009041034
Figure 2009041034

本発明は上記のように構成されており、本発明の粘着材組成物に紫外線を照射すると、第一、第二の樹脂成分であるt−ブチルアクリレートとフェノキシエチルアクリレートとが第三の樹脂成分の重合に組み込まれる。t−ブチルアクリレートとフェノキシエチルアクリレートのようなアクリレートが重合に組み込まれた場合、メタクリレートが重合に組み込まれた場合に比べて得られる重合体の柔軟性が高くなる。従って、硬化した粘着剤組成物からなる粘着層は適度な柔軟性を有し、該粘着層を有する粘着シートを曲面に接着させた場合に、端部が曲面から浮き上がることがない。  The present invention is configured as described above, and when the adhesive composition of the present invention is irradiated with ultraviolet rays, the first and second resin components t-butyl acrylate and phenoxyethyl acrylate are the third resin component. Embedded in the polymerization of When acrylates such as t-butyl acrylate and phenoxyethyl acrylate are incorporated into the polymerization, the resulting polymer is more flexible than when methacrylate is incorporated into the polymerization. Therefore, the pressure-sensitive adhesive layer made of the cured pressure-sensitive adhesive composition has appropriate flexibility, and when the pressure-sensitive adhesive sheet having the pressure-sensitive adhesive layer is bonded to the curved surface, the end portion does not rise from the curved surface.

また、アクリル酸やヒドロキシプロピルアクリレートは架橋主剤であるイソシアネートと反応し、架橋構造の架橋点として機能するので、架橋主剤と架橋助剤の両方を含有する架橋剤を用いると、より発達した網状構造が形成される。
また、本発明の粘着剤組成物にはロジンやテルペンフェノール等の粘着付与剤が添加されているので、粘着シートの接着性も高い。
In addition, since acrylic acid and hydroxypropyl acrylate react with isocyanate, which is a crosslinking agent, and function as a crosslinking point of the crosslinked structure, a more developed network structure is obtained by using a crosslinking agent containing both a crosslinking agent and a crosslinking aid. Is formed.
Moreover, since tackifiers, such as rosin and terpene phenol, are added to the adhesive composition of this invention, the adhesiveness of an adhesive sheet is also high.

母材の主成分である第三の樹脂成分としては、アクリルモノマー又は、アクリルモノマーとアクリルポリマーの混合物を用いることができる。第三の樹脂成分がアクリルポリマーのみからなる場合は、粘着剤組成物全体の粘度が高くなり、粘着剤組成物の塗布工程が困難になるので好ましくない。
また、本発明によれば、予め母材を構成する樹脂成分を重合させる必要がないので、粘着剤組成物を作成する工程は簡易である。
As the third resin component that is the main component of the base material, an acrylic monomer or a mixture of an acrylic monomer and an acrylic polymer can be used. When the third resin component is composed only of an acrylic polymer, the viscosity of the entire pressure-sensitive adhesive composition becomes high, and the coating process of the pressure-sensitive adhesive composition becomes difficult, which is not preferable.
In addition, according to the present invention, it is not necessary to polymerize the resin component that constitutes the base material in advance, so that the process of creating the pressure-sensitive adhesive composition is simple.

本発明によれば、t−ブチルアクリレートとフェノキシエチルアクリレートの両方が母材に適量添加されることによって、硬化した後の塗布層(粘着層)の接着性が低下することなく、粘着層の強度や柔軟性が高くなっているので、本発明の粘着シートを被着体の曲面の接着に用いることが可能にされている。  According to the present invention, both t-butyl acrylate and phenoxyethyl acrylate are added to the base material in appropriate amounts, so that the adhesive layer strength after curing is not reduced, and the strength of the adhesive layer is reduced. In addition, since the flexibility is increased, the pressure-sensitive adhesive sheet of the present invention can be used for bonding the curved surface of the adherend.

先ず、本発明の粘着剤組成物を以下のように作製する。
t−ブチルアクリレートである第一の樹脂成分と、フェノキシエチルアクリレートである第二の樹脂成分と、アクリルモノマー又はアクリルモノマーとアクリルポリマーとの混合物である第三の樹脂成分とからなる母材に対し、架橋剤と、粘着付与剤と、光重合開始剤とを所定の配合比率で添加、混合し、紫外線を照射しない条件で粘着剤組成物を作製する。
First, the pressure-sensitive adhesive composition of the present invention is prepared as follows.
For a base material comprising a first resin component that is t-butyl acrylate, a second resin component that is phenoxyethyl acrylate, and a third resin component that is an acrylic monomer or a mixture of an acrylic monomer and an acrylic polymer. Then, a crosslinking agent, a tackifier, and a photopolymerization initiator are added and mixed at a predetermined blending ratio, and a pressure-sensitive adhesive composition is prepared under the condition that ultraviolet rays are not irradiated.

ここでは、第一の樹脂成分の含有量と第二の樹脂成分の含有量とを、それぞれ母材全体の2.5重量%以上20重量%以下とした。また、第一〜第三の樹脂成分はそれぞれ常温でペースト状であり、紫外線を照射しない条件では第一〜第三の樹脂成分の重合反応は起こらないので、粘着剤組成物はペースト状である。  Here, the content of the first resin component and the content of the second resin component were 2.5 wt% or more and 20 wt% or less of the entire base material, respectively. In addition, the first to third resin components are each pasty at normal temperature, and the polymerization reaction of the first to third resin components does not occur under the conditions where ultraviolet rays are not irradiated, so the pressure-sensitive adhesive composition is pasty. .

次に、上記粘着剤組成物を用いて本発明の粘着シートを下記のように作製する。図1の符号10は粘着シートの製造に用いられる製造装置の一例を示しており、製造装置10は第一、第二の塗布装置14、21と、貼り合わせ装置17と、紫外線照射装置23とを有している。  Next, the adhesive sheet of this invention is produced as follows using the said adhesive composition.Reference numeral 10 in FIG. 1 shows an example of a manufacturing apparatus used for manufacturing an adhesive sheet. Themanufacturing apparatus 10 includes first andsecond coating apparatuses 14 and 21, abonding apparatus 17, and anultraviolet irradiation apparatus 23. have.

この製造装置10を用いて粘着シートを作製するには、先ず、支持体である剥離テープ51が巻き芯に巻き回されてなる第一のロール12を製造装置10の巻き出し軸11に装着する。ここでは、剥離テープ51として膜厚150μmの剥離紙を用いた。  In order to produce an adhesive sheet using thismanufacturing apparatus 10, first, afirst roll 12 in which a peelingtape 51 as a support is wound around a winding core is mounted on the unwindingshaft 11 of themanufacturing apparatus 10. . Here, a release paper having a film thickness of 150 μm was used as therelease tape 51.

次いで、第一のロール12から剥離テープ51の端部を第一の塗布装置14に繰り出し、第一の塗布装置14によって剥離テープ51表面に粘着剤組成物を塗布すると、剥離テープ51表面に粘着剤組成物の塗布層(第一の塗布層)が形成される。図2(a)の符号61は第一の塗布層が形成された状態のテープを示しており、同図の符号51は第一の塗布層を示している。
製造装置10の第二の巻き出し軸15には、基材であるテープ状の不織布55が巻き芯に巻き回されてなる第二のロール16が装着されており、第二のロール16から不織布55端部を繰り出し、不織布55と、第一の塗布層52が形成された状態のテープ61とをそれぞれ貼り合わせ装置17に送る。
Next, when the end portion of therelease tape 51 is fed from thefirst roll 12 to thefirst coating device 14 and the adhesive composition is applied to the surface of therelease tape 51 by thefirst application device 14, therelease tape 51 adheres to the surface of therelease tape 51. A coating layer (first coating layer) of the agent composition is formed.Reference numeral 61 in FIG. 2A shows the tape on which the first coating layer is formed, andreference numeral 51 in FIG. 2 shows the first coating layer.
Asecond roll 16 in which a tape-shapednonwoven fabric 55 as a base material is wound around a winding core is attached to thesecond unwinding shaft 15 of themanufacturing apparatus 10. 55 ends are fed out, and thenon-woven fabric 55 and thetape 61 in a state where thefirst coating layer 52 is formed are respectively sent to thebonding device 17.

貼り合わせ装置17は圧着ロール18、19を有しており、第一の塗布層52が配置された側の面と、不織布55とを向かい合わせた状態で、テープ61と不織布55とを圧着ロール18、19間に通すと、一方の圧着ロール18によって支持されたテープ61の第一の塗布層52表面に、他方の圧着ロール19によって不織布55が押しつけられ、不織布55が第一の塗布層52表面に貼着される。図2(b)の符号62はその状態のテープを示している。  Thelaminating device 17 has crimpingrolls 18 and 19, and thetape 61 and thenonwoven fabric 55 are crimped in a state where the surface on which thefirst coating layer 52 is disposed and thenonwoven fabric 55 face each other. 18 and 19, thenon-woven fabric 55 is pressed against the surface of thefirst application layer 52 of thetape 61 supported by the one press-bonding roll 18 by the other press-bonding roll 19, and thenon-woven fabric 55 becomes thefirst application layer 52. Affixed to the surface.Reference numeral 62 in FIG. 2B shows the tape in this state.

不織布55が貼着された状態のテープ62を第二の塗布装置23に送し、第二の塗布装置21によってテープ62の不織布55表面に粘着剤組成物を塗布すると、不織布55表面に第二の塗布層が形成される。図2(c)の符号64はその状態のテープを示しており、図2(c)の符号54は第二の塗布層を示している。
次に、第二の塗布層54が形成された状態のテープ64を紫外線照射装置23へ送り、テープ64の第二の塗布層54表面に紫外線を照射する。少なくとも第二の塗布層54と不織布55は紫外線を透過するので、紫外線は第一の塗布層52にも照射される。
When thetape 62 with thenon-woven fabric 55 attached is fed to thesecond coating device 23 and the adhesive composition is applied to the surface of thenon-woven fabric 55 of thetape 62 by thesecond coating device 21, The coating layer is formed.Reference numeral 64 in FIG. 2C shows the tape in that state, andreference numeral 54 in FIG. 2C shows the second coating layer.
Next, thetape 64 on which thesecond coating layer 54 is formed is sent to theultraviolet irradiation device 23 to irradiate the surface of thesecond coating layer 54 of thetape 64 with ultraviolet rays. Since at least thesecond coating layer 54 and thenonwoven fabric 55 transmit ultraviolet rays, the ultraviolet rays are also applied to thefirst coating layer 52.

第一、第二の塗布層52、54に紫外線が照射されると、粘着剤組成物に含有された光重合開始剤によって母材の重合反応が開始する。このとき、架橋助剤が架橋主剤の架橋点となり、母材の重合体に網状構造が形成されると共に、粘着付与剤によって塗布層全体に粘着性が発現する。  When the first and second coating layers 52 and 54 are irradiated with ultraviolet rays, the polymerization reaction of the base material is started by the photopolymerization initiator contained in the pressure-sensitive adhesive composition. At this time, the crosslinking aid serves as a crosslinking point of the crosslinking main agent, a network structure is formed in the polymer of the base material, and the tackiness agent develops tackiness throughout the coating layer.

図2(d)の符号65は母材の重合によって第一、第二の塗布層52、54が硬化した状態のテープを示している。同図の符号53、57は第一、第二の塗布層52、54が硬化して形成された第一、第二の粘着層をそれぞれ示しており、第一、第二の粘着層53、57と、粘着層53、57間に配置された不織布55とで本発明の粘着シート50が構成される。
その状態のテープ65を製造装置10の巻き取り軸25によって巻き取ると、巻き取り軸25周囲に第三のロール27が形成される。
Reference numeral 65 in FIG. 2D indicates a tape in which the first and second coating layers 52 and 54 are cured by polymerization of the base material.Reference numerals 53 and 57 in the figure denote first and second adhesive layers formed by curing the first and second coating layers 52 and 54, respectively. 57 and thenonwoven fabric 55 disposed between theadhesive layers 53 and 57 constitute theadhesive sheet 50 of the present invention.
When thetape 65 in this state is wound by the windingshaft 25 of themanufacturing apparatus 10, athird roll 27 is formed around the windingshaft 25.

第三のロール27からテープ65を繰り出し、所望形状にカットした後剥離テープ51をめくれば、粘着シート50から剥離テープ51が剥離される。粘着シート50の不織布55の両面には、それぞれ粘着性を有する第一、第二の粘着層53、57が配置されているので、該粘着テープ51は両面粘着テープとして機能する。  When thetape 65 is unwound from thethird roll 27 and cut into a desired shape and then therelease tape 51 is turned, therelease tape 51 is peeled from theadhesive sheet 50. Since the first and secondadhesive layers 53 and 57 having adhesiveness are disposed on both surfaces of thenonwoven fabric 55 of theadhesive sheet 50, theadhesive tape 51 functions as a double-sided adhesive tape.

以上は、第一の塗布層52に貼着された不織布55に粘着剤組成物を塗布する場合について説明したが、本発明はこれに限定されるものではない。
図3の符号30は製造装置の他の例を示しており、第二の巻き出し軸35に装着された第二のロール36から不織布75を第二の塗布装置41に繰り出し、第二の塗布装置41によって不織布75表面に第二の塗布層を形成する。図4(a)の符号82は不織布75表面に第二の塗布層74が形成された状態のテープを示している。
Although the above demonstrated the case where an adhesive composition was apply | coated to thenonwoven fabric 55 stuck to the1st application layer 52, this invention is not limited to this.
Reference numeral 30 in FIG. 3 shows another example of the manufacturing apparatus. Thenon-woven fabric 75 is fed from thesecond roll 36 attached to thesecond unwinding shaft 35 to thesecond coating apparatus 41, and the second coating is performed. A second coating layer is formed on the surface of thenonwoven fabric 75 by thedevice 41.Reference numeral 82 in FIG. 4A indicates a tape in which thesecond coating layer 74 is formed on the surface of thenonwoven fabric 75.

これとは別に、第一の巻き出し軸31に装着された第一のロール32から剥離テープ71を繰り出し、第一の塗布装置34によって図2(a)に示したものと同じ構造のテープ81を作製する。その状態のテープ81と、第二の塗布層74が形成された状態のテープ82とをそれぞれ貼り合わせ装置37へ送り、第一の塗布層72と不織布75とを対向させた状態で、テープ81、82を圧着ロール38、39間に通すと、圧着ロール38、39によって不織布75が第一の塗布層72に押しつけられ、テープ81、82が互いに貼り合わされる。  Separately, the peelingtape 71 is fed out from thefirst roll 32 mounted on the first unwindingshaft 31, and thetape 81 having the same structure as that shown in FIG. Is made. Thetape 81 in that state and thetape 82 in which thesecond coating layer 74 is formed are respectively sent to thelaminating device 37, and thetape 81 in a state where thefirst coating layer 72 and thenonwoven fabric 75 are opposed to each other. , 82 is passed between the press rolls 38, 39, thenon-woven fabric 75 is pressed against thefirst coating layer 72 by the press rolls 38, 39, and thetapes 81, 82 are bonded to each other.

図4(b)の符号84は2枚のテープ81、82が貼り合わされてなる1枚のテープを示しており、該テープ84を紫外線照射装置43内を送り、紫外線を照射すると第一、第二の塗布層72、74が硬化して第一、第二の粘着層となる。
図4(c)の符号85はその状態のテープを示しており、第一、第二の粘着層73、77と不織布75とで本発明の粘着シート70が構成される。粘着シート70が形成された状態のテープ85を巻き取り軸45で巻き取れば、巻き取り軸45周囲に第三のロール47が形成される。
Reference numeral 84 in FIG. 4B shows a single tape in which twotapes 81 and 82 are bonded together. When thetape 84 is fed through theultraviolet irradiation device 43 and irradiated with ultraviolet rays, the first and second tapes are shown. The twocoating layers 72 and 74 are cured to form first and second adhesive layers.
Reference numeral 85 in FIG. 4C shows the tape in that state, and the first and secondadhesive layers 73 and 77 and thenonwoven fabric 75 constitute theadhesive sheet 70 of the present invention. If thetape 85 in a state where theadhesive sheet 70 is formed is wound around the windingshaft 45, thethird roll 47 is formed around the windingshaft 45.

以上は、基材と2つの粘着層とからなる粘着シートについて説明したが、本発明はこれに限定されるものでは無い。例えば、基材を挟んで粘着層が3つ以上積層された粘着シートや、一つの粘着層からなり基材を有しない粘着シートも本発明には含まれる。  Although the above demonstrated the adhesive sheet which consists of a base material and two adhesive layers, this invention is not limited to this. For example, the present invention includes a pressure-sensitive adhesive sheet in which three or more pressure-sensitive adhesive layers are laminated with a base material interposed therebetween, or a pressure-sensitive adhesive sheet made of one pressure-sensitive adhesive layer and having no base material.

以上は第二の塗布層54を露出させた状態で紫外線を照射する場合について説明したが、本発明はこれに限定されるものではない。紫外線を照射する前に、最上層に位置する塗布層(図2(c)では第二の塗布層54)表面に剥離シートを貼付して大気から該塗布層を遮断すれば、母材が重合する際に酸素によって重合反応が阻害されず、形成される粘着層の強度がより高くなる。
また、紫外線照射後の粘着シート50を約50℃の温度条件で24時間以上加熱保存すれば、第一、第二の粘着層53、57内で母材の網状構造が更に発達するので、粘着シート50の強度がより高くなる。
Although the case where ultraviolet rays are irradiated with thesecond coating layer 54 exposed has been described above, the present invention is not limited to this. Before irradiating with ultraviolet rays, the base material is polymerized by attaching a release sheet to the surface of the uppermost coating layer (second coating layer 54 in FIG. 2 (c)) and blocking the coating layer from the atmosphere. In doing so, the polymerization reaction is not inhibited by oxygen, and the strength of the formed pressure-sensitive adhesive layer becomes higher.
Further, if the pressure-sensitive adhesive sheet 50 after ultraviolet irradiation is heated and stored at a temperature of about 50 ° C. for 24 hours or more, the network structure of the base material further develops in the first and second pressure-sensitive adhesive layers 53 and 57. The strength of thesheet 50 becomes higher.

第一の樹脂成分であるt−ブチルアクリレートと、第二の樹脂成分であるフェノキシエチルアクリレートと、下記表1に示す組成の第三の樹脂成分と、架橋剤と、粘着付与剤と、光重合開始剤とをそれぞれ下記表1に示す配合比率で配合し、実施例1〜6の粘着剤組成物を得た。  T-butyl acrylate as the first resin component, phenoxyethyl acrylate as the second resin component, a third resin component having the composition shown in Table 1 below, a crosslinking agent, a tackifier, and photopolymerization. Initiators were blended at the blending ratios shown in Table 1 below, and pressure-sensitive adhesive compositions of Examples 1 to 6 were obtained.

Figure 2009041034
Figure 2009041034

実施例1、2ではアクリルモノマーである2−エチルへキシルアクリレートにアクリル酸が添加された樹脂液を第三の樹脂成分として用いた。実施例3、5ではアクリルモノマーであるブチルアクリレートにアクリル酸が添加された樹脂液を第三の樹脂成分として用いた。また、実施例4、6では、アクリルモノマーである2−エチルへキシルアクリレート30重量%と、アクリルモノマーであるブチルアクリレート66重量%と、アクリル酸4重量%とからなる樹脂液を重合させ、それら2種類のアクリルモノマーとアクリル酸とが重合してなるアクリルポリマーの含有量が樹脂液全体の約25重量%にされたものを用いた。  In Examples 1 and 2, a resin solution obtained by adding acrylic acid to 2-ethylhexyl acrylate, which is an acrylic monomer, was used as the third resin component. In Examples 3 and 5, a resin solution obtained by adding acrylic acid to butyl acrylate, which is an acrylic monomer, was used as the third resin component. In Examples 4 and 6, a resin solution composed of 30% by weight of 2-ethylhexyl acrylate as an acrylic monomer, 66% by weight of butyl acrylate as an acrylic monomer, and 4% by weight of acrylic acid was polymerized. A material in which the content of an acrylic polymer obtained by polymerizing two kinds of acrylic monomers and acrylic acid was about 25% by weight of the entire resin liquid was used.

また、上記表1から明らかなように、実施例1、5の粘着剤組成物では母材100重量部中に第一、第二の樹脂成分がそれぞれ20重量部ずつ添加されており、母材全体に対する第一、第二の樹脂成分の添加量はそれぞれ20重量%である。実施例2、3では母材100重量部中に第一の樹脂成分が10重量部、第二の樹脂成分が20重量部添加されており、母材全体に対する第一の樹脂成分の添加量は10重量%、第二の樹脂成分の添加量は20重量%になる。実施例4では母材95.7重量部中に第一、第二の樹脂成分がそれぞれ5重量部ずつ添加されており、母材全体に対する第一、第二の樹脂成分の添加量はそれぞれ約5.2重量%になる。実施例6では母材95.4重量部中に第一、第二の樹脂成分がそれぞれ2.5重量部ずつ添加されており、母材全体に対する第一、第二の樹脂成分の添加量はそれぞれ約2.6%になる。  Further, as apparent from Table 1 above, in the pressure-sensitive adhesive compositions of Examples 1 and 5, 20 parts by weight of the first and second resin components were added to 100 parts by weight of the base material, respectively. The amount of the first and second resin components added to the whole is 20% by weight. In Examples 2 and 3, 10 parts by weight of the first resin component and 20 parts by weight of the second resin component are added to 100 parts by weight of the base material, and the amount of the first resin component added to the whole base material is 10% by weight and the amount of the second resin component added is 20% by weight. In Example 4, 5 parts by weight of the first and second resin components are added to 95.7 parts by weight of the base material, and the amount of the first and second resin components added to the whole base material is about 5.2% by weight. In Example 6, 2.5 parts by weight of the first and second resin components are added to 95.4 parts by weight of the base material, and the amount of the first and second resin components added to the whole base material is Each is about 2.6%.

光重合開始剤としては、開始剤PO(芳香族系光重合開始剤とホスフィンオキサイド系光重合開始剤との混合物)と、それぞれチバ・スペシャルティ・ケミカルズ(株)社製である商品名「ダロキュア1173」と、商品名「イルガキュア819」とを用い、粘着付与剤としては、水添ロジンである荒川化学工業(株)社製の商品名「KE311」と、テルペンフェノールであるヤスハラケミカル(株)社製の商品名「U115」と、アクリル系粘着付与剤とを用いた。  Examples of the photopolymerization initiator include an initiator PO (a mixture of an aromatic photopolymerization initiator and a phosphine oxide photopolymerization initiator), and trade names “Darocur 1173” manufactured by Ciba Specialty Chemicals Co., Ltd. ”And the trade name“ Irgacure 819 ”, and as tackifiers, the product name“ KE311 ”manufactured by Arakawa Chemical Co., Ltd., which is a hydrogenated rosin, and Yasuhara Chemical Co., Ltd., which is a terpene phenol, are used. Product name “U115” and an acrylic tackifier.

架橋主剤として、武田薬品工業(株)社製の商品名「TMXDI」と、日本ポリウレタン工業(株)社製の商品名「コロネートL」とを用いた。尚、「TMXDI」はトリメチルキシレリンジイソシアネートであり、「コロネートL」はTDI系イソシアネート変性架橋剤である。
実施例1〜6の粘着剤組成物を用いて上記図2(a)〜(d)の工程で膜厚150μmの粘着シート50をそれぞれ作製し、更に、該粘着シート50を50℃で72時間保存して実施例1〜6の粘着シート50を得た。
これとは別に、比較例として下記表2に示す配合比率で比較例1〜13の粘着剤組成物を作製し、該粘着剤組成物を用いて実施例1と同じ条件で比較例1〜13の粘着シートを作製した。
As the main crosslinking agent, trade name “TMXDI” manufactured by Takeda Pharmaceutical Co., Ltd. and trade name “Coronate L” manufactured by Nippon Polyurethane Industry Co., Ltd. were used. “TMXDI” is trimethylxylerin diisocyanate, and “Coronate L” is a TDI-based isocyanate-modified crosslinking agent.
Using the pressure-sensitive adhesive compositions of Examples 1 to 6, the pressure-sensitive adhesive sheets 50 having a film thickness of 150 μm were respectively produced in the steps of FIGS. 2A to 2D, and the pressure-sensitive adhesive sheet 50 was further heated at 50 ° C. for 72 hours. It preserve | saved and theadhesive sheet 50 of Examples 1-6 was obtained.
Apart from this, as comparative examples, the pressure-sensitive adhesive compositions of Comparative Examples 1 to 13 were prepared at the blending ratios shown in Table 2 below, and Comparative Examples 1 to 13 were performed under the same conditions as in Example 1 using the PSA composition. A pressure-sensitive adhesive sheet was prepared.

Figure 2009041034
Figure 2009041034

尚、比較例1〜5はフェノキシエチルアクリレートを用いないで粘着剤組成物を作製した場合であり、比較例6〜8はt−ブチルアクリレートを用いないで粘着剤組成物を作製した場合である。また、比較例9、10はt−ブチルアクリレートの添加量を母材100重量部に対して30重量部とした場合であり、比較例11、12はフェノキシエチルアクリレートの添加量を母材100重量部に対して30重量部とした場合である。また、比較例13はフェノキシエチルアクリレートとt−ブチルアクリレートを両方共用いなかった場合である。
実施例1〜6の粘着シート50と比較例1〜13の粘着シートとを用いて下記に示す「保持力試験」と、「剥離強度試験」と、「曲面接着性試験」と、「定荷重剥離試験」とをそれぞれ行った。
In addition, Comparative Examples 1-5 is a case where an adhesive composition is produced without using phenoxyethyl acrylate, and Comparative Examples 6-8 are cases where an adhesive composition is produced without using t-butyl acrylate. . Comparative Examples 9 and 10 are cases where the addition amount of t-butyl acrylate was 30 parts by weight with respect to 100 parts by weight of the base material, and Comparative Examples 11 and 12 were those where the addition amount of phenoxyethyl acrylate was 100% by weight of the base material. It is a case where it is 30 weight part with respect to a part. Comparative Example 13 is a case where neither phenoxyethyl acrylate nor t-butyl acrylate was used.
Using the pressure-sensitive adhesive sheet 50 of Examples 1 to 6 and the pressure-sensitive adhesive sheets of Comparative Examples 1 to 13, the following “retention force test”, “peel strength test”, “curved surface adhesion test”, and “constant load” "Peel test" was performed.

〔保持力試験〕
長方形形状の第一の貼着対象物91の一端に実施例1〜6の粘着シート50をそれぞれ貼付し、図5に示すように、粘着シート50を挟んだ状態で長方形形状の第二の貼着対象物92の一端を、第一の貼着対象物91の一端とを重ね合わせた後、重さ2kgのローラーを一往復させることによって第一、第二の貼着対象物91、92を貼り合わせて6種類の試験片90を作製した。
ここでは、第一の貼着対象物91としてステンレス板(以下SUSと略記する)を用い、第二の貼着対象物92として膜厚25μmのポリエチレンテレフタレートフィルム(以下PETと略記する)を用いた。また、粘着シート50は一辺の大きさが25mmの正方形形状のものを用いた。
[Retention force test]
Theadhesive sheet 50 of Examples 1-6 is each affixed to the end of the rectangular-shaped 1st stickingtarget object 91, and as shown in FIG. After overlapping one end of theattachment object 92 and one end of thefirst attachment object 91, the first and second attachment objects 91 and 92 are moved by reciprocating a roller having a weight of 2 kg. 6 types oftest pieces 90 were produced by bonding.
Here, a stainless steel plate (hereinafter abbreviated as SUS) was used as thefirst sticking object 91, and a polyethylene terephthalate film (hereinafter abbreviated as PET) having a film thickness of 25 μm was used as thesecond sticking object 92. . The pressure-sensitive adhesive sheet 50 was a square having a side of 25 mm.

次いで、40℃、100℃の異なる温度条件で、第二の貼着対象物92の他端に1kgの荷重をかけて放置し、1時間後に第一、第二の貼着対象物91、92の貼着された部分に生じるずれの大きさ(mm)、又は、第二の貼着対象物92が剥がれるの要した時間をそれぞれ測定した。  Next, under a different temperature condition of 40 ° C. and 100 ° C., a load of 1 kg is applied to the other end of thesecond sticking object 92, and the first and second sticking objects 91, 92 are left after one hour. The magnitude | size (mm) of the shift | offset | difference which arises in the part which stuck, or the time which the 2ndsticking target object 92 peeled was measured, respectively.

〔剥離強度試験〕上記保持力試験と同じ工程で第一、第二の貼着対象物91、92を貼り合わせ、室温で1時間放置して試験片90とした。ここでは、粘着シート50として縦70mm、横20mmの長方形形状のものを用いた。また、第二の貼着対象物92としては、保持力試験に用いたものと同じPETを用い、第一の貼着対象物91としては以下SUS、アクリルニトリルブタジエンスチレン樹脂フィルム(以下、ABSと略記する)、ポリスチレン樹脂フィルム(以下PSと略記する)、ポリプロピレン(以下PPと略記する)の4種類を用いて、各実施例1〜6について計4種類の試験片を作成した。[Peel Strength Test] The first and second sticking objects 91 and 92 were bonded together in the same process as the holding power test, and left at room temperature for 1 hour to obtain atest piece 90. Here, a rectangular sheet having a length of 70 mm and a width of 20 mm was used as theadhesive sheet 50. Moreover, as the 2ndsticking target object 92, the same PET as what was used for the holding power test is used, and as the 1st stickingtarget object 91, SUS, an acrylonitrile butadiene styrene resin film (henceforth, ABS). A total of four types of test pieces were prepared for each of Examples 1 to 6, using four types of materials (abbreviated), polystyrene resin film (hereinafter abbreviated as PS), and polypropylene (hereinafter abbreviated as PP).

これらの試験片を用い、図6に示すように、第二の貼着対象物92の粘着シート50に貼着された側とは反対側の端部を180℃に折り曲げて該端部を引張速度300mm/分の条件で引張り、第二の貼着対象物92が第一の貼着対象物91から剥離されるときの剥離強度を測定した。尚、測定雰囲気は温度23℃±2℃、相対湿度65±5%であった。  Using these test pieces, as shown in FIG. 6, the end opposite to the side attached to the pressure-sensitive adhesive sheet 50 of the second object to be attached 92 is bent at 180 ° C. to pull the end. Pulling was performed at a speed of 300 mm / min, and the peel strength when thesecond sticking object 92 was peeled from thefirst sticking object 91 was measured. The measurement atmosphere was a temperature of 23 ° C. ± 2 ° C. and a relative humidity of 65 ± 5%.

〔曲面接着性試験〕
膜厚2mm、長さ200mmの板状の第一の貼着対象物91と、膜厚0.5μm、縦20mm、横150mmの板状の第二の貼着対象物92とをそれぞれ用意し、図7(a)に示すように、第二の貼着対象物92の一面全体に粘着シート50が密着した状態で第一、第二の貼着対象物91、92を貼り合わせた後、温度23℃±2℃、相対湿度65±5%の条件で24時間放置して試験片90とした。
[Curved surface adhesion test]
A plate-likefirst sticking object 91 having a film thickness of 2 mm and a length of 200 mm and a plate-likesecond sticking object 92 having a film thickness of 0.5 μm, a length of 20 mm, and a width of 150 mm are prepared. As shown to Fig.7 (a), after bonding the 1st, 2nd sticking target objects 91 and 92 in the state which theadhesive sheet 50 adhered to the whole one surface of the secondsticking target object 92, temperatureA test piece 90 was left for 24 hours under conditions of 23 ° C. ± 2 ° C. andrelative humidity 65 ± 5%.

ここでは、第二の貼着対象物92は第一の貼着対象物91の中央位置に位置し、第一の貼着対象物91の第二の貼着対象物92と重なり合わない両端部の長さはそれぞれ25mmであった。また、第一の貼着対象物としてはアルミニウム板を用い、第二の貼着対象物92としてアルミニウム板を、第一の貼着対象物91としてはABS、PS、アクリル板の3種類を用い、各実施例1〜6について計3種類の試験片90を作製した。  Here, the 2nd stickingobject 92 is located in the center position of the1st sticking object 91, and the both ends which do not overlap with the 2nd stickingobject 92 of the1st sticking object 91 The length of each was 25 mm. Moreover, an aluminum plate is used as the first sticking object, an aluminum plate is used as thesecond sticking object 92, and three types of ABS, PS, and acrylic board are used as thefirst sticking object 91. A total of three types oftest pieces 90 were prepared for each of Examples 1 to 6.

次いで、50℃の温度条件で、第一の貼着対象物91の一端から他端までの距離が190mmになるように各試験片90を折り曲げ(図7(b))、その状態を24時間維持した後、各試験片90を観察し、第二の貼着対象物92の端部に生じる浮きの大きさ(単位:mm)を測定した。また、浮きの大きさが10mm以上の場合を「×」として評価した。  Next, eachtest piece 90 is bent under a temperature condition of 50 ° C. so that the distance from one end to the other end of thefirst object 91 is 190 mm (FIG. 7B), and the state is maintained for 24 hours. After maintaining, eachtest piece 90 was observed, and the size (unit: mm) of the float generated at the end of thesecond sticking object 92 was measured. Moreover, the case where the magnitude | size of a float was 10 mm or more was evaluated as "x".

〔定荷重剥離試験〕
上記「剥離強度試験」で作製した試験片90を第二の貼着対象物92が貼付された面を下側に向けて配置し、「剥離強度試験」と同じ測定雰囲気で、第二の貼着対象物92の粘着シート50に貼着された側とは反対側の端部を鉛直方向に100gの荷重で引張り(図8)、その状態を24時間維持した後、第二の貼着対象物92が第一の貼着対象物91表面から剥離される距離(剥離距離、単位:mm)を測定した。
[Constant load peel test]
Thetest piece 90 prepared in the above “peel strength test” is arranged with the surface to which thesecond object 92 is adhered facing downward, and the second paste is applied in the same measurement atmosphere as the “peel strength test”. After pulling the end of theobject 92 opposite to the side adhered to theadhesive sheet 50 with a load of 100 g in the vertical direction (FIG. 8) and maintaining this state for 24 hours, the second object to be adhered The distance (peeling distance, unit: mm) at which theobject 92 is peeled from the surface of thefirst object 91 is measured.

上記実施例1〜6について「保持力試験」、「剥離強度試験」の結果を下記表3に記載し、「曲面接着性試験」の結果を下記表4に、「定荷重試験」の結果を下記表5にそれぞれ記載する。また、比較例1〜13について「保持力試験」、「剥離強度試験」の結果を下記表6に記載し、「曲面接着性試験」の結果を下記表7に、「定荷重試験」の結果を下記表8にそれぞれ記載する。  About the said Examples 1-6, the result of a "holding force test" and a "peel strength test" is described in the following Table 3, the result of a "curved surface adhesion test" is shown in the following Table 4, and the result of a "constant load test" is shown Each is described in Table 5 below. Moreover, about Comparative Examples 1-13, the result of "holding force test" and "peel strength test" is described in the following Table 6, the result of "curved surface adhesion test" is shown in the following Table 7, and the result of "constant load test" Are described in Table 8 below.

Figure 2009041034
Figure 2009041034

Figure 2009041034
Figure 2009041034

Figure 2009041034
Figure 2009041034

Figure 2009041034
Figure 2009041034

Figure 2009041034
Figure 2009041034

Figure 2009041034
Figure 2009041034

尚、「保持力試験」は値が小さい程保持力が大きいことを示しており、「剥離強度試験」は値が大きい程剥離強度が大きいことを示す。また、「曲面接着性試験」は値が小さい程粘着層の耐反発性及び柔軟性が高いことを示し、「定荷重剥離試験」は値が小さいほど静的荷重に強いことを示す。
また、上記表中のAF、CF、Jはそれぞれ粘着シート50が剥離されたときの状態を示し、AFは界面破壊(Adhension Failure)を、CFは凝集破壊(Cohesive Failure)を示す。
The “holding force test” indicates that the smaller the value is, the larger the holding force is. The “peel strength test” indicates that the larger the value is, the higher the peel strength is. The “curved surface adhesion test” indicates that the smaller the value, the higher the resilience resistance and flexibility of the adhesive layer, and the “constant load peel test” indicates that the smaller the value, the stronger the static load.
Also, AF, CF, and J in the above table indicate the state when theadhesive sheet 50 is peeled off, AF indicates interfacial failure (Adhesion Failure), and CF indicates cohesive failure (Cohesive Failure).

上記表3、表8から分かるように、実施例1〜6の粘着シート50は「保持力試験」、「剥離強度試験」、「曲面接着性試験」、「定荷重試験」においてそれぞれ高い評価結果が得られた。
他方、フェノキシエチルアクリレートを含有しない比較例3、4やt−ブチルアクリレートを含有しない比較例6〜8は第二の貼着対象物92を一時間保持できないほど保持力が低く、また、「剥離強度試験」において実施例の破壊が全て界面破壊(AF)だったのに対し、比較例3、4、6〜8は粘着層自身が破壊される凝集破壊(CF)であり、粘着シート50の強度が低いことが分かる。
As can be seen from Tables 3 and 8 above, theadhesive sheets 50 of Examples 1 to 6 have high evaluation results in the “holding force test”, “peel strength test”, “curved surface adhesion test”, and “constant load test”, respectively. was gotten.
On the other hand, Comparative Examples 3 and 4 which do not contain phenoxyethyl acrylate and Comparative Examples 6 to 8 which do not contain t-butyl acrylate have a low holding power so that thesecond object 92 cannot be held for one hour. In the “strength test”, all the breaks in the examples were interfacial fracture (AF), whereas Comparative Examples 3, 4, and 6 to 8 were cohesive fracture (CF) in which the adhesive layer itself was destroyed. It can be seen that the strength is low.

また、フェノキシエチルアクリレートを有していないが、粘着付与剤の添加量が大い比較例5は、粘着性が高いため充分な保持力を示したが、剥離強度の剥離の様態がCFであり、粘着層の強度が低いことが分かる。
また、フェノキシエチルアクリレートの添加量とt−ブチルアクリレートの添加量がそれぞれ母材95重量部に対して30重量部以上である比較例9〜12や、フェノキシエチルアクリレートとt−ブチルアクリレートのいずれか一方のみが添加されている比較例1、2、6は「曲面接着性」や「定荷重剥離」に対する評価が低く、粘着層の柔軟性や定荷重に対する接着強度が低いことがわかる。
Further, Comparative Example 5, which does not have phenoxyethyl acrylate but has a large amount of tackifier added, showed sufficient holding power due to its high tackiness, but the peel mode of peel strength was CF. It can be seen that the strength of the adhesive layer is low.
In addition, any one of Comparative Examples 9 to 12 in which the addition amount of phenoxyethyl acrylate and the addition amount of t-butyl acrylate is 30 parts by weight or more with respect to 95 parts by weight of the base material, or phenoxyethyl acrylate and t-butyl acrylate, respectively. Comparative Examples 1, 2 and 6 to which only one of them is added have low evaluation for “curved surface adhesion” and “constant load peeling”, and it can be seen that the adhesive layer has low flexibility and low adhesive strength.

以上は第三の樹脂成分としてブチルアクリレート、2−エチルへキシルアクリレートを用いる場合について説明したが、本発明はこれに限定されるものではない。例えば、n−プロピルアクリレート、ノニルアクリレート、イソオクチルアクリレート等のアクリルモノマー又はこれらのアクリルモノマーとアクリルポリマーとの混合物を用いることができる。  Although the case where butyl acrylate and 2-ethylhexyl acrylate are used as the third resin component has been described above, the present invention is not limited to this. For example, an acrylic monomer such as n-propyl acrylate, nonyl acrylate, isooctyl acrylate, or a mixture of these acrylic monomers and an acrylic polymer can be used.

架橋主剤はイソシアネート化合物に限定されるものではなく、例えば、エポキシ樹脂や種々のアクリレート、又はビニル基等の官能基を有する多官能モノマーやそのオリゴマー等種々のものを用いることができ、架橋助剤としてはヒドロキシプロピルアクリレート以外にも、例えば、2−ヒドロキシエチルアクリレート等のアクリル酸エステルの誘導体、フェノキシジエチレングリコールアクリレート等のオリゴエステルアクリレート、水酸基やカルボキシル基、アミン基等を有するモノマー等を用いることができる。
また、粘着付与剤としては、ロジンエステル樹脂、ロジン変性フェノール樹脂、種々のテルペン樹脂、低分子量のブチルゴムやポリブテン、アクリル系樹脂、キシレン系樹脂等も用いることができる。
The crosslinking main agent is not limited to an isocyanate compound, and various crosslinking agents such as epoxy resins, various acrylates, polyfunctional monomers having functional groups such as vinyl groups, and oligomers thereof can be used. In addition to hydroxypropyl acrylate, for example, acrylic acid ester derivatives such as 2-hydroxyethyl acrylate, oligoester acrylates such as phenoxydiethylene glycol acrylate, monomers having a hydroxyl group, a carboxyl group, an amine group, and the like can be used. .
As the tackifier, rosin ester resin, rosin-modified phenol resin, various terpene resins, low molecular weight butyl rubber, polybutene, acrylic resin, xylene resin, and the like can also be used.

基材55に用いる不織布の素材としては、例えば、ガラス繊維、アクリル繊維、ナイロン繊維、ポリエステル繊維等の合成繊維、又は、綿繊維等種々の天然繊維を用いることができる。基材55として不織布を用い、図2、図4に示すように基材55上に粘着剤組成物を塗布する場合は、粘着剤組成物が含浸しないものが好ましい。また、基材55は不織布に限定されるものではなく、例えば、ポリエステルフィルム、OPP(二軸延伸ポリプロピレン)フィルム等の種々の樹脂フィルムも用いることができる。いずれの場合にしろ、基材55としては紫外線の透過性が高いものが好ましい。
また、本発明の粘着剤組成物に、老化防止剤、着色剤等種々の添加剤を添加することも可能である。
As a raw material of the nonwoven fabric used for thebase material 55, various natural fibers, such as synthetic fibers, such as glass fiber, an acrylic fiber, nylon fiber, a polyester fiber, or a cotton fiber, can be used, for example. When a non-woven fabric is used as thebase material 55 and the pressure-sensitive adhesive composition is applied onto thebase material 55 as shown in FIGS. 2 and 4, it is preferable that the pressure-sensitive adhesive composition is not impregnated. Moreover, thebase material 55 is not limited to a nonwoven fabric, For example, various resin films, such as a polyester film and an OPP (biaxially stretched polypropylene) film, can also be used. In any case, thesubstrate 55 is preferably a substrate having a high ultraviolet transmittance.
Moreover, it is also possible to add various additives, such as antiaging agent and a coloring agent, to the adhesive composition of this invention.

本発明の粘着シートの製造に用いる製造装置の一例を説明するための図The figure for demonstrating an example of the manufacturing apparatus used for manufacture of the adhesive sheet of this invention(a)〜(d):本発明の粘着シートの製造工程の一例を説明するための図(a)-(d): The figure for demonstrating an example of the manufacturing process of the adhesive sheet of this invention.本発明の粘着シートの製造に用いる製造装置の他の例を説明するための図The figure for demonstrating the other example of the manufacturing apparatus used for manufacture of the adhesive sheet of this invention(a)〜(c):本発明の粘着シートの製造工程の他の例を説明するための図(a)-(c): The figure for demonstrating the other example of the manufacturing process of the adhesive sheet of this invention.保持力試験の試験方法を説明するための図Diagram for explaining the holding power test method剥離強度試験の試験方法を説明するための図Diagram for explaining the test method of peel strength test(a)、(b):曲面接着性試験の試験方法を説明するための図(a), (b): diagrams for explaining the test method of the curved surface adhesion test定荷重剥離試験の試験方法を説明するための図Diagram for explaining the test method of the constant load peel test

符号の説明Explanation of symbols

50、70……粘着シート
51、71……支持体(剥離テープ)
52、72……第一の塗布層
53、73……第一の粘着層
54、74……第二の塗布層
55、75……基材(不織布)
57、77……第二の粘着層
50, 70 ...Adhesive sheets 51, 71 ... Support (peeling tape)
52, 72 ...first coating layer 53, 73 ... firstadhesive layer 54, 74 ...second coating layer 55, 75 ... substrate (nonwoven fabric)
57, 77 …… Second adhesive layer

Claims (20)

Translated fromJapanese
少なくとも2層の粘着層を有し、前記粘着層の間に基材が配置された粘着シートを製造する粘着シートの製造方法であって、
支持体の少なくとも一方の面に粘着剤組成物を塗布し、第一の塗布層を形成する工程と、
前記第一の塗布層上に前記基材を配置する工程と、
前記基材上に粘着剤組成物を塗布し、第二の塗布層を形成する工程と、
前記支持体の配置された側の面と、前記第二の塗布層が配置された側の面のいずれか一方又は両方に紫外線を照射し、前記第一、第二の塗布層を硬化させて第一、第二の粘着層を形成する工程とを有する粘着シートの製造方法。
A method for producing a pressure-sensitive adhesive sheet comprising a pressure-sensitive adhesive sheet having at least two pressure-sensitive adhesive layers and having a substrate disposed between the pressure-sensitive adhesive layers,
Applying a pressure-sensitive adhesive composition to at least one surface of the support, and forming a first coating layer;
Disposing the substrate on the first coating layer;
Applying a pressure-sensitive adhesive composition on the substrate and forming a second coating layer;
Irradiate one or both of the surface on which the support is disposed and the surface on which the second coating layer is disposed to cure the first and second coating layers. The manufacturing method of the adhesive sheet which has a process of forming a 1st, 2nd adhesive layer.
少なくとも2層の粘着層を有し、前記粘着層の間に基材が配置された粘着シートを製造する粘着シートの製造方法であって、
支持体の少なくとも一方の面に粘着剤組成物を塗布し、第一の塗布層を形成する工程と、
前記基材の一方の面に粘着剤組成物を塗布し、第二の塗布層を形成する工程と、
前記支持体上の前記第一の塗布層表面と、前記基材の前記第二の塗布層が形成されていない面とを互いに密着させる工程と、
前記支持体の配置された側の面と、前記第二の塗布層が配置された側の面のいずれか一方又は両方に紫外線を照射し、前記第一、第二の塗布層を硬化させて第一、第二の粘着層を形成する工程とを有する粘着シートの製造方法。
A method for producing a pressure-sensitive adhesive sheet comprising a pressure-sensitive adhesive sheet having at least two pressure-sensitive adhesive layers and having a substrate disposed between the pressure-sensitive adhesive layers,
Applying a pressure-sensitive adhesive composition to at least one surface of the support, and forming a first coating layer;
Applying a pressure-sensitive adhesive composition to one surface of the substrate and forming a second coating layer;
Adhering the surface of the first coating layer on the support and the surface of the substrate on which the second coating layer is not formed;
Irradiate one or both of the surface on which the support is disposed and the surface on which the second coating layer is disposed to cure the first and second coating layers. The manufacturing method of the adhesive sheet which has a process of forming a 1st, 2nd adhesive layer.
前記粘着剤組成物に、樹脂成分からなる母材と、紫外線照射によって前記母材を重合させる光重合開始剤とを含有させる請求項1又は請求項2のいずれか1項記載の粘着シートの製造方法であって、
前記母材に、t−ブチルアクリレートからなる第一の樹脂成分と、フェノキシエチルアクリレートからなる第二の樹脂成分とを含有させ、
前記第一の樹脂成分の添加量を前記母材全体の2.5重量%以上20重量%以下にし、
前記第二の樹脂成分の添加量を前記母材全体の2.5重量%以上20重量%以下にする粘着シートの製造方法。
The pressure-sensitive adhesive sheet according to any one of claims 1 and 2, wherein the pressure-sensitive adhesive composition contains a base material composed of a resin component and a photopolymerization initiator that polymerizes the base material by ultraviolet irradiation. A method,
The base material contains a first resin component made of t-butyl acrylate and a second resin component made of phenoxyethyl acrylate,
The addition amount of the first resin component is 2.5 wt% or more and 20 wt% or less of the whole base material,
A method for producing a pressure-sensitive adhesive sheet, wherein the amount of the second resin component added is 2.5% by weight or more and 20% by weight or less of the whole base material.
前記母材に、アクリルモノマーからなる樹脂液と、アクリルモノマーとアクリルポリマーとを混合した樹脂液のいずれか一方を主成分とする第三の樹脂成分を含有させる請求項3記載の粘着シートの製造方法。  4. The pressure-sensitive adhesive sheet according to claim 3, wherein the base material contains a third resin component mainly composed of either a resin liquid composed of an acrylic monomer or a resin liquid obtained by mixing an acrylic monomer and an acrylic polymer. Method. 前記アクリルモノマーを、2−エチルへキシルアクリレートとブチルアクリレートのいずれか一方又は両方で構成する請求項4記載の粘着シートの製造方法。  The manufacturing method of the adhesive sheet of Claim 4 which comprises the said acrylic monomer by either one or both of 2-ethylhexyl acrylate and butyl acrylate. 前記アクリルポリマーを、2−エチルへキシルアクリレートと、ブチルアクリレートと、アクリル酸とが重合した重合物で構成させる請求項4又は請求項5のいずれか1項記載の粘着シートの製造方法。  The method for producing a pressure-sensitive adhesive sheet according to any one of claims 4 and 5, wherein the acrylic polymer is composed of a polymer obtained by polymerizing 2-ethylhexyl acrylate, butyl acrylate, and acrylic acid. 前記第三の樹脂成分に、アクリル酸を添加する請求項4乃至請求項6のいずれか1項記載の粘着シートの製造方法。  The method for producing a pressure-sensitive adhesive sheet according to any one of claims 4 to 6, wherein acrylic acid is added to the third resin component. 前記母材の重合体に架橋構造を形成する架橋剤と、前記母材の重合体に粘着性を付与する粘着付与剤とを、前記粘着剤組成物に添加する請求項3乃至請求項7のいずれか1項記載の粘着シートの製造方法。  The crosslinking agent for forming a crosslinked structure in the polymer of the base material and the tackifier for imparting tackiness to the polymer of the base material are added to the pressure-sensitive adhesive composition. The manufacturing method of the adhesive sheet of any one of Claims 1. 前記架橋剤に架橋主剤としてイソシアネート化合物を含有させる請求項8記載の粘着シートの製造方法。  The manufacturing method of the adhesive sheet of Claim 8 which makes the said crosslinking agent contain an isocyanate compound as a crosslinking main agent. 前記架橋剤には、架橋助剤としてヒドロキシプロピルアクリレートを添加する請求項8又は請求項9のいずれか1項記載の粘着シートの製造方法。  The method for producing a pressure-sensitive adhesive sheet according to claim 8, wherein hydroxypropyl acrylate is added to the crosslinking agent as a crosslinking aid. 前記粘着付与剤にロジンと、テルペンフェノールのいずれか一方又は両方を含有させる請求項8乃至請求項10のいずれか1項記載の粘着シートの製造方法。  The manufacturing method of the adhesive sheet of any one of Claim 8 thru | or 10 which makes the said tackifier contain either one or both of rosin and terpene phenol. 少なくとも2層の粘着層を有し、前記粘着層の間に基材が配置された粘着シートを製造する粘着シートの製造方法であって、
支持体の少なくとも一方の面に粘着剤組成物を塗布し、第一の塗布層を形成する工程と、
前記第一の塗布層上に前記基材を配置する工程と、
前記基材上に粘着剤組成物を塗布し、第二の塗布層を形成する工程と、
前記支持体の配置された側の面と、前記第二の塗布層が配置された側の面のいずれか一方又は両方に紫外線を照射し、前記第一、第二の塗布層を硬化させて第一、第二の粘着層を形成する工程と、
前記第一、第二の粘着層を加熱する工程とを有し、
前記粘着剤組成物に、樹脂成分からなる母材と、紫外線照射によって前記母材を重合させる光重合開始剤とを含有させ、
前記母材に、t−ブチルアクリレートからなる第一の樹脂成分と、フェノキシエチルアクリレートからなる第二の樹脂成分とを含有させ、
前記第一の樹脂成分の添加量を前記母材全体の2.5重量%以上20重量%以下にし、
前記第二の樹脂成分の添加量を前記母材全体の2.5重量%以上20重量%以下にし、
前記母材の重合体に、架橋構造を形成する架橋剤と、前記母材の重合体に粘着性を付与する粘着付与剤とを、前記粘着剤組成物に添加し、
前記架橋剤に架橋主剤としてイソシアネート化合物を含有させる粘着シートの製造方法。
A method for producing a pressure-sensitive adhesive sheet comprising a pressure-sensitive adhesive sheet having at least two pressure-sensitive adhesive layers and having a substrate disposed between the pressure-sensitive adhesive layers,
Applying a pressure-sensitive adhesive composition to at least one surface of the support, and forming a first coating layer;
Disposing the substrate on the first coating layer;
Applying a pressure-sensitive adhesive composition on the substrate and forming a second coating layer;
Irradiate one or both of the surface on which the support is disposed and the surface on which the second coating layer is disposed to cure the first and second coating layers. Forming the first and second adhesive layers;
Heating the first and second adhesive layers,
The pressure-sensitive adhesive composition contains a base material composed of a resin component and a photopolymerization initiator that polymerizes the base material by ultraviolet irradiation,
The base material contains a first resin component made of t-butyl acrylate and a second resin component made of phenoxyethyl acrylate,
The addition amount of the first resin component is 2.5 wt% or more and 20 wt% or less of the whole base material,
The addition amount of the second resin component is 2.5 wt% or more and 20 wt% or less of the whole base material,
A cross-linking agent that forms a cross-linked structure in the polymer of the base material, and a tackifier that imparts tackiness to the polymer of the base material are added to the pressure-sensitive adhesive composition,
The manufacturing method of the adhesive sheet which makes the said crosslinking agent contain an isocyanate compound as a crosslinking main agent.
少なくとも2層の粘着層を有し、前記粘着層の間に基材が配置された粘着シートを製造する粘着シートの製造方法であって、
支持体の少なくとも一方の面に粘着剤組成物を塗布し、第一の塗布層を形成する工程と、
前記基材の一方の面に粘着剤組成物を塗布し、第二の塗布層を形成する工程と、
前記支持体上の前記第一の塗布層表面と、前記基材の前記第二の塗布層が形成されていない面とを互いに密着させる工程と、
前記支持体の配置された側の面と、前記第二の塗布層が配置された側の面のいずれか一方又は両方に紫外線を照射し、前記第一、第二の塗布層を硬化させて第一、第二の粘着層を形成する工程と、
前記第一、第二の粘着層を加熱する工程とを有し、
前記粘着剤組成物に、樹脂成分からなる母材と、紫外線照射によって前記母材を重合させる光重合開始剤とを含有させ、
前記母材に、t−ブチルアクリレートからなる第一の樹脂成分と、フェノキシエチルアクリレートからなる第二の樹脂成分とを含有させ、
前記第一の樹脂成分の添加量を前記母材全体の2.5重量%以上20重量%以下にし、
前記第二の樹脂成分の添加量を前記母材全体の2.5重量%以上20重量%以下にし、
前記母材の重合体に、架橋構造を形成する架橋剤と、前記母材の重合体に粘着性を付与する粘着付与剤とを、前記粘着剤組成物に添加し、
前記架橋剤に架橋主剤としてイソシアネート化合物を含有させる粘着シートの製造方法。
A method for producing a pressure-sensitive adhesive sheet comprising a pressure-sensitive adhesive sheet having at least two pressure-sensitive adhesive layers and having a substrate disposed between the pressure-sensitive adhesive layers,
Applying a pressure-sensitive adhesive composition to at least one surface of the support, and forming a first coating layer;
Applying a pressure-sensitive adhesive composition to one surface of the substrate and forming a second coating layer;
Adhering the surface of the first coating layer on the support and the surface of the substrate on which the second coating layer is not formed;
Irradiate one or both of the surface on which the support is disposed and the surface on which the second coating layer is disposed to cure the first and second coating layers. Forming the first and second adhesive layers;
Heating the first and second adhesive layers,
The pressure-sensitive adhesive composition contains a base material composed of a resin component and a photopolymerization initiator that polymerizes the base material by ultraviolet irradiation,
The base material contains a first resin component made of t-butyl acrylate and a second resin component made of phenoxyethyl acrylate,
The addition amount of the first resin component is 2.5 wt% or more and 20 wt% or less of the whole base material,
The addition amount of the second resin component is 2.5 wt% or more and 20 wt% or less of the whole base material,
A cross-linking agent that forms a cross-linked structure in the polymer of the base material, and a tackifier that imparts tackiness to the polymer of the base material are added to the pressure-sensitive adhesive composition,
The manufacturing method of the adhesive sheet which makes the said crosslinking agent contain an isocyanate compound as a crosslinking main agent.
前記母材に、アクリルモノマーからなる樹脂液と、アクリルモノマーとアクリルポリマーとを混合した樹脂液のいずれか一方を主成分とする第三の樹脂成分を含有させる請求項12又は請求項13のいずれか1項記載の粘着シートの製造方法。  The said base material is made to contain the 3rd resin component which has as a main component any one of the resin liquid which consists of an acrylic monomer, and the resin liquid which mixed the acrylic monomer and the acrylic polymer. The manufacturing method of the adhesive sheet of Claim 1. 前記アクリルモノマーを、2−エチルへキシルアクリレートとブチルアクリレートのいずれか一方又は両方で構成する請求項14記載の粘着シートの製造方法。  The manufacturing method of the adhesive sheet of Claim 14 which comprises the said acrylic monomer by either one or both of 2-ethylhexyl acrylate and butyl acrylate. 前記アクリルポリマーを、2−エチルへキシルアクリレートと、ブチルアクリレートと、アクリル酸とが重合した重合物で構成させる請求項14又は請求項15のいずれか1項記載の粘着シートの製造方法。  The method for producing a pressure-sensitive adhesive sheet according to any one of claims 14 and 15, wherein the acrylic polymer is composed of a polymer obtained by polymerizing 2-ethylhexyl acrylate, butyl acrylate, and acrylic acid. 前記第三の樹脂成分に、アクリル酸を添加する請求項14乃至請求項16のいずれか1項記載の粘着シートの製造方法。  The method for producing a pressure-sensitive adhesive sheet according to any one of claims 14 to 16, wherein acrylic acid is added to the third resin component. 前記架橋剤には、架橋助剤としてヒドロキシプロピルアクリレートを添加する請求項12乃至請求項17のいずれか1項記載の粘着シートの製造方法。  The method for producing a pressure-sensitive adhesive sheet according to any one of claims 12 to 17, wherein hydroxypropyl acrylate is added to the crosslinking agent as a crosslinking aid. 前記粘着付与剤にロジンと、テルペンフェノールのいずれか一方又は両方を含有させる請求項12乃至請求項18のいずれか1項記載の粘着シートの製造方法。  The manufacturing method of the adhesive sheet of any one of Claim 12 thru | or 18 which makes the said tackifier contain either one or both of rosin and terpene phenol. 前記第一、第二の粘着層を24時間以上加熱する請求項12乃至請求項19のいずれか1項記載の粘着シートの製造方法。  The method for producing a pressure-sensitive adhesive sheet according to any one of claims 12 to 19, wherein the first and second pressure-sensitive adhesive layers are heated for 24 hours or more.
JP2008257412A2008-10-022008-10-02 Manufacturing method of adhesive sheetExpired - LifetimeJP5009887B2 (en)

Priority Applications (1)

Application NumberPriority DateFiling DateTitle
JP2008257412AJP5009887B2 (en)2008-10-022008-10-02 Manufacturing method of adhesive sheet

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
JP2008257412AJP5009887B2 (en)2008-10-022008-10-02 Manufacturing method of adhesive sheet

Related Parent Applications (1)

Application NumberTitlePriority DateFiling Date
JP2001282869ADivisionJP2003089772A (en)2001-09-182001-09-18Pressure sensitive adhesive composition and pressure sensitive adhesive sheet

Publications (2)

Publication NumberPublication Date
JP2009041034Atrue JP2009041034A (en)2009-02-26
JP5009887B2 JP5009887B2 (en)2012-08-22

Family

ID=40442094

Family Applications (1)

Application NumberTitlePriority DateFiling Date
JP2008257412AExpired - LifetimeJP5009887B2 (en)2008-10-022008-10-02 Manufacturing method of adhesive sheet

Country Status (1)

CountryLink
JP (1)JP5009887B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
WO2013099683A1 (en)*2011-12-282013-07-04綜研化学株式会社Optical member adhesive composition, adhesive sheet using same, optical member provided with adhesive layer, and flat panel display
JP2014508192A (en)*2010-12-312014-04-03チェイル インダストリーズ インコーポレイテッド Adhesive composition for polarizing plate and polarizing plate containing the same
CN109749672A (en)*2018-12-272019-05-14苏州赛伍应用技术股份有限公司Hot visbreaking glue of a kind of UV solidification and its preparation method and application
JP2019151860A (en)*2013-04-052019-09-12エルジー・ケム・リミテッドAdhesive composition for touch panel, adhesive film, and touch panel

Citations (7)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPH05163469A (en)*1991-12-131993-06-29Sony Chem CorpDouble-sided tacky tape and its production
JPH0734041A (en)*1993-07-221995-02-03Sekisui Chem Co LtdTacky sheet
JPH07113068A (en)*1993-10-151995-05-02Nitto Denko Corp Radiation-curable adhesive tape manufacturing method
JPH11199832A (en)*1998-01-161999-07-27Nitto Denko Corp Pressure-sensitive adhesive sheets and their production method
JPH11209710A (en)*1998-01-291999-08-03Kyodo Giken Kagaku Kk Double-sided pressure-sensitive adhesive tape or sheet and method for producing the same
JP2000248241A (en)*1999-03-022000-09-12Sliontec Corp Pressure-sensitive double-sided adhesive tape and method for producing the same
JP2001503811A (en)*1996-11-122001-03-21ミネソタ マイニング アンド マニュファクチャリング カンパニー Thermosetting pressure-sensitive adhesive

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPH05163469A (en)*1991-12-131993-06-29Sony Chem CorpDouble-sided tacky tape and its production
JPH0734041A (en)*1993-07-221995-02-03Sekisui Chem Co LtdTacky sheet
JPH07113068A (en)*1993-10-151995-05-02Nitto Denko Corp Radiation-curable adhesive tape manufacturing method
JP2001503811A (en)*1996-11-122001-03-21ミネソタ マイニング アンド マニュファクチャリング カンパニー Thermosetting pressure-sensitive adhesive
JPH11199832A (en)*1998-01-161999-07-27Nitto Denko Corp Pressure-sensitive adhesive sheets and their production method
JPH11209710A (en)*1998-01-291999-08-03Kyodo Giken Kagaku Kk Double-sided pressure-sensitive adhesive tape or sheet and method for producing the same
JP2000248241A (en)*1999-03-022000-09-12Sliontec Corp Pressure-sensitive double-sided adhesive tape and method for producing the same

Cited By (8)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JP2014508192A (en)*2010-12-312014-04-03チェイル インダストリーズ インコーポレイテッド Adhesive composition for polarizing plate and polarizing plate containing the same
US9593268B2 (en)2010-12-312017-03-14Cheil Industries, Inc.Adhesive composition for polarizing plate and polarizing plate prepared using the same
WO2013099683A1 (en)*2011-12-282013-07-04綜研化学株式会社Optical member adhesive composition, adhesive sheet using same, optical member provided with adhesive layer, and flat panel display
CN104024363A (en)*2011-12-282014-09-03综研化学株式会社Optical member adhesive composition, adhesive sheet using same, optical member provided with adhesive layer, and flat panel display
JPWO2013099683A1 (en)*2011-12-282015-05-07綜研化学株式会社 Adhesive composition for optical member, adhesive sheet using the same, optical member with adhesive layer, and flat panel display
JP2019151860A (en)*2013-04-052019-09-12エルジー・ケム・リミテッドAdhesive composition for touch panel, adhesive film, and touch panel
CN109749672A (en)*2018-12-272019-05-14苏州赛伍应用技术股份有限公司Hot visbreaking glue of a kind of UV solidification and its preparation method and application
CN109749672B (en)*2018-12-272021-07-09苏州赛伍应用技术股份有限公司UV curing heat-reducing adhesive and preparation method and application thereof

Also Published As

Publication numberPublication date
JP5009887B2 (en)2012-08-22

Similar Documents

PublicationPublication DateTitle
JP7265350B2 (en) Reinforcing film and method for manufacturing device with reinforcing film
JP3921017B2 (en) Pressure sensitive adhesive sheet
EP3091043B1 (en)Uv curable adhesives based on acrylic polymers
CN105524567A (en)Optical film with pressure sensitive adhesive on both sides and method for producing image display device using thereof, and method for suppressing curl of optical film with pressure sensitive adhesive on both sides
JP2015030765A (en)Pressure-sensitive adhesive sheet, optical film with pressure-sensitive adhesive layer, and image display device
KR101718746B1 (en)Double-sided pressure-sensitive adhesive sheet with repeeling properties and method for repeeling same
TW201241135A (en)Spontaneously rolling adhesive sheet and method of manufacturing cut piece
EP0902071B1 (en)Thermosetting pressure-sensitive adhesive and adhesive sheets made by using the same
WO2017082106A1 (en)Bonding method, bonded structure and bonding kit
JP5009887B2 (en) Manufacturing method of adhesive sheet
JP5560965B2 (en) Energy ray easy-release adhesive composition
JP2000073025A (en)Tacky tape and its production
JP6607370B2 (en) Adhesive tape and articles
JP2003089772A (en)Pressure sensitive adhesive composition and pressure sensitive adhesive sheet
JP2006213603A (en) Adhesive composition for skin application and adhesive sheet for skin application
JP2003253224A (en)Double-sided adhesive tape
JP2011168715A (en)Double-sided adhesive tape for polishing cloth fixing, and pad for polishing cloth fixing
JP2005023114A (en) Pressure-sensitive double-sided adhesive tape or sheet
JP5620050B2 (en) (Meth) acrylic independent adhesive film
JP2862453B2 (en) Double-sided pressure-sensitive adhesive tape and method for producing the same
JPH10316957A (en)Curable adhesive composition
JP2015089910A (en) Self-winding adhesive tape
JPH10251614A (en)Curable pressure-sensitive adhesive composition
JP2007051293A (en)Pressure-sensitive adhesive sheet
JP2020045383A (en) Pressure-sensitive adhesive sheet substrate, method for producing the same, and pressure-sensitive adhesive sheet

Legal Events

DateCodeTitleDescription
A977Report on retrieval

Free format text:JAPANESE INTERMEDIATE CODE: A971007

Effective date:20110927

A131Notification of reasons for refusal

Free format text:JAPANESE INTERMEDIATE CODE: A131

Effective date:20111018

A521Request for written amendment filed

Free format text:JAPANESE INTERMEDIATE CODE: A523

Effective date:20111219

Free format text:JAPANESE INTERMEDIATE CODE: A821

Effective date:20111219

TRDDDecision of grant or rejection written
A01Written decision to grant a patent or to grant a registration (utility model)

Free format text:JAPANESE INTERMEDIATE CODE: A01

Effective date:20120522

A01Written decision to grant a patent or to grant a registration (utility model)

Free format text:JAPANESE INTERMEDIATE CODE: A01

A61First payment of annual fees (during grant procedure)

Free format text:JAPANESE INTERMEDIATE CODE: A61

Effective date:20120531

R150Certificate of patent or registration of utility model

Ref document number:5009887

Country of ref document:JP

Free format text:JAPANESE INTERMEDIATE CODE: R150

Free format text:JAPANESE INTERMEDIATE CODE: R150

FPAYRenewal fee payment (event date is renewal date of database)

Free format text:PAYMENT UNTIL: 20150608

Year of fee payment:3

R250Receipt of annual fees

Free format text:JAPANESE INTERMEDIATE CODE: R250

R250Receipt of annual fees

Free format text:JAPANESE INTERMEDIATE CODE: R250

R250Receipt of annual fees

Free format text:JAPANESE INTERMEDIATE CODE: R250

R250Receipt of annual fees

Free format text:JAPANESE INTERMEDIATE CODE: R250

R250Receipt of annual fees

Free format text:JAPANESE INTERMEDIATE CODE: R250

R250Receipt of annual fees

Free format text:JAPANESE INTERMEDIATE CODE: R250

R250Receipt of annual fees

Free format text:JAPANESE INTERMEDIATE CODE: R250

EXPYCancellation because of completion of term
R154Certificate of patent or utility model (reissue)

Free format text:JAPANESE INTERMEDIATE CODE: R154


[8]ページ先頭

©2009-2025 Movatter.jp