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JP2004162482A - Asphalt shingle with algaproofness - Google Patents

Asphalt shingle with algaproofness
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Publication number
JP2004162482A
JP2004162482AJP2002332389AJP2002332389AJP2004162482AJP 2004162482 AJP2004162482 AJP 2004162482AJP 2002332389 AJP2002332389 AJP 2002332389AJP 2002332389 AJP2002332389 AJP 2002332389AJP 2004162482 AJP2004162482 AJP 2004162482A
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Prior art keywords
asphalt
algal
layer
algae
agent
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JP4064214B2 (en
Inventor
Tsuneo Tajima
常雄 田島
Kazuo Suga
和男 須賀
Tadashi Ito
正 伊藤
Hidenori Mizuki
秀範 水木
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Tajima Roofing Inc
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Tajima Roofing Inc
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Abstract

<P>PROBLEM TO BE SOLVED: To maintain the beauty of a roof over a long period of time by taking algaproof countermeasures against an asphalt shingle so as to permanently prevent the growth of algae, mold, etc. <P>SOLUTION: This asphalt shingle is equipped with a base layer wherein an inorganic fiber is impregnated with asphalt, asphalt layers which are formed on both the front and back sides of the base layer, and a mineral sand particle layer which is formed on the surface of the asphalt layer. The asphalt layer, which serves as a surface side when the asphalt shingle is laid on a roof part, is equipped with an algaproof means, and the algaproof means is composed of a granular material or a powdery material, which contains an algicide scattered on the asphalt layer with mineral sand particles. <P>COPYRIGHT: (C)2004,JPO

Description

Translated fromJapanese

【0001】
【発明の属する技術分野】
本願発明は、防藻性を具えたアスファルトシングルに関し、詳しくは高温多湿の環境下でも藻、カビ等の発生を効果的に抑制してそれの発生に伴なう表面変色を防止できるアスファルトシングルに関するものである。
【0002】
【従来の技術】
屋根仕上げ材としてのいわゆるシングルには、従来、基材のガラス繊維にアスファルトを含浸し表面に着色砂等を圧着させたアスファルトシングル、基材のガラス繊維の両面に無機質充填材と樹脂材との混合層を形成し表面に鉱物砂が圧着された不燃シングル等がある。
シングルは、セメント系かわらや焼き物かわら等にくらべて、薄手かつ軽量であり、しかも、熱可塑性を有するから若干の加熱により柔軟性を帯びるので、変形した下地、例えば曲線的な下地にもなじみ良く使用できる長所を有している。また、表面には砕石粒、砂等の鉱物質層が形成されているので耐候性に優れる等の利点も有している。
【0003】
【発明が解決しようとする課題】
ところが、シングル葺きによる屋根は、年を経るにしたがい表面に藻の発生による変色現象が生じることがある。 すなわち、高温多湿の環境下では北面や終日直射日光の当たらない部位等は、藻類の増殖に最適な環境となり、この藻類の発生により屋根表面が暗緑色となり建物の美観が著しく損なわれる。
【0004】
このため、従来はシングルの基層、すなわち不燃シングルにあっては無機質充填層、アスファルトシングルにあってはアスファルト層に防藻剤を混入する等の対策がなされていた。
【0005】
しかしながら、上記従来技術のうち、アスファルトシングルの場合、アスファルト層のアスファルトは製造時に摂氏180度以上の高温となるため防藻剤が劣化し、所定の防藻効果を得られないという不都合があった。このため、アスファルトシングルの表面の鉱物質砂を防藻剤でコーティングする対策も採用されたが、耐候性に問題があり長期的な防藻効果を実現できなかった。
そこで、本願出願人の開発陣は、さきに前記のような熱履歴に耐える防藻手段を有するシングル類屋根仕上材を特開平4−27060号として開示した。
ここに開示された発明は、所定の防藻性を発揮するが、さらに改良すべき若干の余地を残している。 すなわち、前記発明において、所望の防藻性を確保するには、相当な量の防藻剤を要するため、生産工程において環境保持対策等の煩雑な取り扱いを必要とし、また防藻剤そのものも高価であることなどから製造に係るトータルコストが高くなることが避けられない。
【0006】
【課題を解決するための手段】
本願発明は、無機質繊維にアスファルトを含浸してなる基層と、この基層の表
裏両面に形成されるアスファルト層と、このアスファルト層の表面に形成した鉱物質砂粒層とを具えたアスファルトシングルにおいて、屋根部への敷設時に上側となるアスファルト層表面に分散適性ならびに溶出制御機能を有する防藻手段を固定することにより上記従来の課題を解決しようとするものである。
【0007】
また、前記のアスファルトシングルにおいて、前記防藻手段は、アスファルト
層表面に鉱物質砂粒と混在するように撒布定着させた防藻剤およびバインダーにより所定の粒径に形成された粒状体で構成して、バインダーにより防藻剤を保持させて防藻剤の溶出を制御するとともに、微粉状の防藻剤をバインダーを介して粒状体に形成することによりアスファルト層への撒布時に良好な分散適性を得るようになすことがある。
【0008】
さらに、前記のアスファルトシングルにおいて、防藻剤はトリアジン系化合物であり、防藻手段としての粒状体は紫外線防止材を含有させて構成することがある。
【0009】
またさらに、防藻手段としての粒状体は顔料を含有することがある。
【0010】
そして、前記のアスファルトシングルにおいて、紫外線防止材および/又は顔料はカーボンで構成することがある。
【0011】
【発明の実施形態】
以下、本願発明の実施形態を説明する。
図において、11は周知のアスファルトシングルであり、平板状に形成された
このアスファルトシングル11は、ガラス繊維その他の無機質繊維からなり寸法安定性に優れかつ柔軟性を有する基材にアスファルトを含浸、塗覆してなる基層12と、この基層12の表裏両面にアスファルトの塗覆により形成される表面アスファルト層13および裏面アスファルト層14と、これら表面アスファルト層13および裏面アスファルト層14の外面にそれぞれ固着形成される鉱物質砂粒層15と鉱物質砂粒層16とからなっていて、さらに、前記表面アスファルト層13外面には分散適性ならびに溶出制御機能を有する後述の防藻手段が形成されている。
【0012】
図2は、図1の要部拡大図であり、前記表面アスファルト層13外面(上面)には、所定の顔料で焼成着色された彩色鉱物質砂粒(層)15と混在して前期防藻手段が固着形成されている。この防藻手段は、表面アスファルト層13外面(上面)に彩色鉱物質砂粒15と混在するように撒布定着させた防藻剤およびバインダーにより所定の粒径に形成された粒状体17で構成されていて、バインダーにより防藻剤を保持させて防藻剤の溶出を制御するとともに、微粉状の防藻剤をバインダーを介して粒状体に形成することによりアスファルト層への撒布時に良好な分散適性を得ることができる。 すなわち、常態が微紛状である防藻剤を表面アスファルト層13外面(上面)に直接撒着させると、防藻剤の過早な溶出により長期にあたり防藻性を確保できないが、本願発明のように、防藻剤をバインダーによりいわば包持する状態にすることにより、防藻剤の溶出が適正に制御できて所望の耐久性を有する防藻機能を確保できる。 また、微紛状の防藻剤を所定面積に適量を均等に撒布することは極めて困難であるが、本願発明のようにバインダーと防藻剤の混合による粒状体にすることにより、良好な分散適性が得られて、均等な撒布が可能になるのである。
【0013】
さて、本実施形態において、防藻手段を構成する粒状体(粒径によっては粉状体とも表現できる)は、防藻剤としてのトリアジン系化物、顔料および抗紫外線材としてのカーボンをバインダーである合成高分子樹脂材の混合物を常法により径300ないし600ミクロン程度に粒状化したものであり、前記表面アスファルト層13上に平方米あたり5グラム程度が撒着され、併せて前記彩色砂15が撒布圧着され鉱物質砂粒層(彩色砂層)15が形成されている。
図3は、防藻手段としての前記粒状体17の構成を示す模式図であり、防藻剤18およびカーボン19は、バインダーとしてのアクリル樹脂と混煉され、上述の粒径を有する粒状体に成形固化されている。 ここで混入されるカーボンは、顔料としての機能に併せてバインダーであるアクリル樹脂を紫外線から防護してその耐候性を高め、ひいては防藻手段としての前記粒状体17における防藻性能の耐久性を向上させることになる。
【0014】
防藻剤を含有する前期粒状体(粉状体)を構成する素材の配合比の一例は、以下のとおりであり、a:プレミックス工程、b:乾燥工程、c:造粒(粉)工程、d:分級工程等を経て製造される。
実施形態における配合比の1例
防藻剤(トリアジン系化物): 65.0重量部
バインダー(アクリル) : 32.5重量部
顔料(カーボン) : 1.9重量部
分散剤 : 0.6重量部
【0015】
a:プレミックス工程
ここでは、防藻剤、カーボン、分散剤を混煉することになる。該実施形態では、
カーボンは分散剤により予め混煉されたかーぼんペーストを使用している。
すなわち、防藻剤、カーボン等を次のような比率により、周知のレディゲミキサー等、周知の機器により30分程度均一に混ぜ合わせた。
防藻剤: 50Kg
カーボンペースト: 6Kg
水: 35−40Kg
【0016】
b:乾燥工程
前記工程aによる混煉物から、適宜手段により所定量の水分を除去する。
【0017】
c:造粒工程
乾燥工程を経た混煉物にバインダーとして所定量のアクリルを混入して、周知の造粒法により所定の粒径を有する細粒状に成形する。
【0018】
d:分級工程
前記細粒の篩い分けにより、粒径300−600μの粒状体を得る。
【0019】
前記工程により得た粒状体を、ほぼ、5g/m程度の割合で、上掛けコートした前記表面アスファルト層13の表面に撒着して防藻手段17を形成する。
さらに、この上に鉱物質砂粒(彩色砂)を撒布圧着して鉱物質砂粒層(彩色砂層)15を形成するとともに、前記裏面アスファルト層14の表面に鉱物質砂を撒着して鉱物質砂粒層中16を形成して、本願発明に係る防藻性を具えたアスファルトシングルが完成する。
【0020】
上記実施形態で得たアスファルトシングルの防藻性能を実権により検証したところ図4ないし図6に示す諸表の結果を得た。
表1の試験内容は、以下のとおりである。
すなわち、防藻アスファルトシングルを所定期間温水処理(浸漬)した場合と非処理の場合に分けて、その防藻効力を比較した。なお、対照資料として従来の防藻不燃シングルを使用した。

Figure 2004162482
温水処理(浸漬): 各資料を摂氏60度の温水に所定期間浸漬(1週間、2週間、3週間、4週間)した。
発藻試験: 肥料入り寒天培地上に各資料を載せ、藻の懸濁液で浸して、上記所定期間放置した後、藻の生育状況を目視観察した。なお、併せて寒天培地における発藻状況も観察した。
発藻状況: ◎発藻無し、 ○斑点状の発藻あり、 △微量の発藻あり、
▲ 1/2の面積に発藻あり、 ×2/3の面積に発藻あり
【0021】
上記の試験から以下のことが判明する。
(1)温水処理(浸漬)無しの場合
放置期間の長短にかかわりなく、全てのシングルにおいて、発藻は見られない。
(2)温水処理(浸漬)1週間の場合
放置期間の長短にかかわりなく、全てのシングルにおいて、発藻は見られない。
(3)温水処理(浸漬)2週間の場合
本願発明に係る防藻アスファルトシングルA1,A2ともに斑点状の発藻ないしは発藻無しの良好な結果を示しており、従来の防藻不燃シングルに比較して優れた防藻性能を具備することが明らかである。
(4)温水処理(浸漬)3週間、4週間の場合
防藻アスファルトシングルA1は、放置期間の長短により発藻微量から面積1/2発藻の範囲の結果を示している。防藻アスファルトシングルA2は、発藻微量から面積2/3発藻の範囲にある。 これに対して、従来の防藻不燃シングルは試験試料の3/4について面積2/3発藻、残りも面積1/2発藻の範囲にある。
【0022】
図5に示す表2の試験内容は、以下のとおりである。
すなわち、防藻アスファルトシングルを所定期間水処理(浸漬)した場合の防藻性能を検証した。なお、対照資料として従来の防藻不燃シングルを使用した。
Figure 2004162482
温水処理(浸漬): 各資料を室温の水に所定期間浸漬(1週間、2週間、3週間、4週間)した。
発藻試験: 肥料入り寒天培地上に各資料を載せ、藻の懸濁液で浸して、上記所 定期間放置した後、藻の生育状況を目視観察した。
発藻状況: ◎発藻無し、 ○斑点状の発藻あり、 △微量の発藻あり、
▲ 1/2の面積に発藻あり、 ×2/3の面積に発藻あり
上記の試験において、放置期間の長短にかかわりなく、全てのシングルにおいて発藻は見られなかった。
【0023】
図6に示す表3の試験内容は、以下のとおりである。
すなわち、老化による防藻アスファルトシングルの防藻性能の変化を検証した。なお、対照資料として従来の防藻不燃シングルを使用した。 また、老化促進処理は田島ルーフィング株式会社技術研究所の装置を使用して各試験試料を養生した。
Figure 2004162482
老化処理: 促進老化試験機により各資料を所定時間(100時間、200時間、800時間)養生した後、それぞれについて発藻試験を
施した。
発藻試験: 肥料入り寒天培地上に各資料を載せ、藻の懸濁液で浸して、所定期間(1−4週間)放置した後、藻の生育状況を目視観察した。
発藻状況: ◎発藻無し、 ○斑点状の発藻あり、 △微量の発藻あり、
▲ 1/2の面積に発藻あり、 ×2/3の面積に発藻あり
【0024】
上記の試験において、老化処理時間が200時間までの場合は、放置期間の長短にかかわりなく、本願発明に係る防藻アスファルトシングルにおいて発藻は見られなかった。 老化処理時間を800時間とした場合、防藻アスファルトシングルA1では発藻無しと微量の範囲に、防藻アスファルトシングルA2ではA1に比較して防藻性能の若干の低下が見られた。
【0025】
【発明の効果】
本願発明は、以上説明したように、無機質繊維基材にアスファルトを含浸・塗覆して塗覆により形成されるアスファルト面に鉱物質砂を圧着してなるアスファルトシングルにおいて、表面側のアスファルト層上面に鉱物質砂と混在させて防藻剤とバインダーによる粒状体を撒着させたので、防藻機能の耐久性、耐候性の向上が著しく、長期間に渡りアスファルトシングルによる屋根の美観を維持できる。
【図面の簡単な説明】
【図1】本願発明の1実施形態に係る屋根仕上げ材としてのアスファルトシングルの断面図である。
【図2】図1の要部拡大図である。
【図3】粒状体の構成を示す模式図である。
【図4】防藻性能試験に係る表1を示す図である。
【図5】防藻性能試験に係る表2を示す図である。
【図6】防藻性能試験に係る表3を示す図である。
【符号の説明】
11......アスファルトシングル
12......基層
13......表面アスファルト層
14......裏面アスファルト層
15......鉱物質砂粒層(彩色砂層)
16......鉱物質砂粒層
17......粒状体(防藻手段)[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an asphalt single having anti-algal properties, and more particularly, to an asphalt single capable of effectively suppressing the generation of algae, mold and the like even under a high-temperature and high-humidity environment and preventing the surface discoloration accompanying the generation. Things.
[0002]
[Prior art]
So-called single as a roof finishing material, conventionally, asphalt single in which asphalt is impregnated into glass fiber of base material and colored sand is pressed on the surface, inorganic filler and resin material on both sides of glass fiber of base material There are non-combustible singles and the like in which a mixed layer is formed and mineral sand is pressed on the surface.
Single is thinner and lighter than cement-based or porcelain tiles, and it has thermoplasticity, so it is flexible by a slight heating, so it fits well on deformed bases, such as curved bases. It has advantages that can be used. In addition, since a mineral layer such as crushed stones and sand is formed on the surface, it also has advantages such as excellent weather resistance.
[0003]
[Problems to be solved by the invention]
However, a single-roofed roof sometimes undergoes discoloration due to the generation of algae over the years. That is, in a hot and humid environment, the northern surface or a part that is not exposed to direct sunlight all day becomes an optimal environment for the growth of algae, and the generation of the algae causes the roof surface to become dark green, which significantly impairs the aesthetics of the building.
[0004]
For this reason, conventionally, countermeasures such as mixing an alga-proofing agent into the inorganic base layer for the single base layer, that is, the non-combustible single, and the asphalt layer for the asphalt single have been taken.
[0005]
However, among the above conventional techniques, in the case of asphalt single, asphalt of the asphalt layer has a disadvantage that the algal repellent is deteriorated due to a high temperature of 180 ° C. or more at the time of production, and a predetermined algal repellent effect cannot be obtained. . For this reason, measures were taken to coat the mineral sand on the surface of the asphalt shingles with an anti-algae agent, but there was a problem with the weather resistance and a long-term alga-preventive effect could not be realized.
Therefore, the development team of the applicant of the present application disclosed in Japanese Patent Application Laid-Open No. Hei 4-27060 a single-type roof finishing material having anti-algal means capable of withstanding the above-mentioned heat history.
Although the invention disclosed herein exhibits a certain anti-algal property, it leaves some room for further improvement. That is, in the above invention, a considerable amount of an alga-proofing agent is required in order to secure the desired alga-proofing property, so that complicated handling such as environmental preservation measures is required in the production process, and the algal-proofing agent itself is also expensive. Therefore, it is inevitable that the total cost related to the production increases.
[0006]
[Means for Solving the Problems]
The present invention relates to an asphalt single comprising a base layer formed by impregnating inorganic fibers with asphalt, an asphalt layer formed on both sides of the base layer, and a mineral sand layer formed on the surface of the asphalt layer. An object of the present invention is to solve the above-mentioned conventional problems by fixing an anti-algal means having a dispersibility and a dissolution control function to an upper surface of an asphalt layer when laying on an asphalt layer.
[0007]
Further, in the asphalt single, the anti-algae means is constituted by a granular material formed to a predetermined particle size by an anti-algal agent and a binder which are spread and fixed so as to be mixed with mineral sand particles on the surface of the asphalt layer. , While controlling the elution of the alga-proofing agent by holding the alga-proofing agent with the binder, and obtaining a good dispersion suitability at the time of spraying on the asphalt layer by forming the fine-powder-like algal-proofing agent into the granular material via the binder. It may be like that.
[0008]
Further, in the above asphalt single, the anti-algal agent is a triazine-based compound, and the granular material as the anti-algal means may be configured to contain an ultraviolet ray preventing material.
[0009]
Furthermore, the granular material as an anti-algal means may contain a pigment.
[0010]
And in the said asphalt single, an ultraviolet-ray prevention material and / or a pigment may be comprised by carbon.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described.
In the figure,reference numeral 11 denotes a well-known asphalt shingle. Theasphalt shingle 11 formed in a flat plate shape is made of glass fiber or other inorganic fiber and has excellent dimensional stability and flexibility. Abase layer 12 covered, asurface asphalt layer 13 and abackside asphalt layer 14 formed by applying asphalt on both the front and back surfaces of thebase layer 12, and an outer surface of thesurface asphalt layer 13 and thebackside asphalt layer 14 which are fixedly formed respectively. Amineral sand layer 15 and amineral sand layer 16 are further provided on the outer surface of thesurface asphalt layer 13 with an anti-algal means described below having a dispersion suitability and a dissolution control function.
[0012]
FIG. 2 is an enlarged view of a main part of FIG. 1. The outer surface (upper surface) of thesurface asphalt layer 13 is mixed with sand particles (layer) 15 of a colored mineral substance calcined and colored with a predetermined pigment. Are fixedly formed. The anti-algal means is composed of agranular material 17 formed to a predetermined particle size by an alga-proofing agent and a binder which are dispersed and fixed on the outer surface (upper surface) of thesurface asphalt layer 13 so as to be mixed with the coloringmineral sand particles 15. By controlling the dissolution of the anti-algal agent by holding the anti-algal agent with the binder, and forming the finely powdered anti-algal agent into granules via the binder, good dispersion suitability at the time of spraying on the asphalt layer. Obtainable. That is, when the alga-protecting agent, which is usually in the form of fine powder, is directly sprayed on the outer surface (upper surface) of thesurface asphalt layer 13, premature elution of the algae-preventing agent cannot secure the alga-proofing property for a long period of time. As described above, by disposing the anti-algal agent in a state of being held by the binder, the elution of the anti-algal agent can be appropriately controlled, and the anti-algal function having desired durability can be secured. Further, it is extremely difficult to evenly distribute an appropriate amount of the fine powdery algatic agent over a predetermined area. However, by dispersing the fine particles by mixing a binder and an algatic agent as in the present invention, good dispersion can be achieved. Suitability is obtained and even distribution is possible.
[0013]
By the way, in this embodiment, the granular material (which can also be expressed as a powdery material depending on the particle size) constituting the alga-proof means is a binder comprising a triazine-based compound as an alga-proof agent, a pigment, and carbon as an anti-ultraviolet material. The mixture of synthetic polymer resin materials is granulated by a conventional method to a diameter of about 300 to 600 microns, and about 5 g per square rice is sprayed on thesurface asphalt layer 13 and the colored sand 15 A mineral sand layer (colored sand layer) 15 is formed by spraying and compression.
FIG. 3 is a schematic diagram showing a configuration of thegranular material 17 as an alga-proof means. The alga-proofing agent 18 andcarbon 19 are mixed with an acrylic resin as a binder to form a granular material having the above-described particle diameter. Molded and solidified. The carbon mixed here protects the acrylic resin, which is a binder, from ultraviolet rays in addition to the function as a pigment, and enhances the weather resistance thereof. Will be improved.
[0014]
An example of the compounding ratio of the materials constituting the granular material (powder) containing the anti-algal agent is as follows, a: premixing step, b: drying step, c: granulation (powder) step , D: manufactured through a classification step and the like.
An example of the compounding ratio in the embodiment: Algaeproofing agent (triazine-based compound): 65.0 parts by weight Binder (acryl): 32.5 parts by weight Pigment (carbon): 1.9 parts by weight Dispersant: 0.6 parts by weight [ 0015
a: Premixing step In this case, an algicidal agent, carbon, and a dispersant are mixed. In this embodiment,
The carbon used is a bonbon paste which has been previously kneaded with a dispersant.
That is, an anti-algal agent, carbon, and the like were uniformly mixed in the following ratio using a well-known device such as a well-known Loedige mixer for about 30 minutes.
Anti-algal agent: 50Kg
Carbon paste: 6Kg
Water: 35-40Kg
[0016]
b: Drying step A predetermined amount of water is removed from the brick obtained in the step a by an appropriate means.
[0017]
c: Granulation Step A predetermined amount of acryl is mixed as a binder into the kneaded brick after the drying step, and the mixture is formed into fine particles having a predetermined particle diameter by a well-known granulation method.
[0018]
d: Classification step By sieving the fine particles, a granular material having a particle size of 300 to 600 µ is obtained.
[0019]
The granules obtained in the above step are spread at a rate of about 5 g / m2 on the surface of thesurface asphalt layer 13 coated with the overcoat to form the alga-proofing means 17.
Further, mineral sand (colored sand) is sprayed and pressed thereon to form a mineral sand layer (colored sand layer) 15, and mineral sand is sprayed on the surface of thebackside asphalt layer 14. The asphalt single having anti-algal properties according to the present invention is completed by forming 16 in the layer.
[0020]
When the asphalt proofing performance of the asphalt shingles obtained in the above embodiment was verified by a real authority, the results of the tables shown in FIGS. 4 to 6 were obtained.
The test contents in Table 1 are as follows.
That is, the alga-proof asphalt singles were subjected to hot water treatment (immersion) for a predetermined period of time and untreated, and the alga-proof effectiveness was compared. In addition, the conventional non-algae-incombustible single was used as a control material.
Figure 2004162482
Warm water treatment (immersion): Each sample was immersed in warm water at 60 degrees Celsius for a predetermined period (one week, two weeks, three weeks, four weeks).
Algae test: Each material was placed on an agar medium containing a fertilizer, immersed in a suspension of algae, allowed to stand for the above-mentioned predetermined period, and then visually observed for the growth status of the algae. In addition, the algal growth on the agar medium was also observed.
Status of algae: ◎ No algae, ○ Spotted algae, △ Trace amount of algae,
▲ There is algae in the area of 1/2, and there is algae in the area of × 2/3.
The above test reveals the following.
(1) Without hot water treatment (immersion) No algae is observed in all singles regardless of the length of the standing period.
(2) In the case of one week of warm water treatment (immersion) No algae is observed in all singles, regardless of the length of the standing period.
(3) In the case of hot water treatment (immersion) for 2 weeks Both the anti-algal asphalt singles A1 and A2 according to the present invention show good results without spotted algae or no algae, and are compared with conventional non-algae non-combustible singles It is clear that the composition has excellent anti-algae performance.
(4) Warm water treatment (immersion) for 3 weeks and 4 weeks The results of the alga-proof asphalt single A1 range from a small amount of alga to 1/2 area algae depending on the length of the standing period. The anti-algal asphalt single A2 is in a range from a trace amount of alga to 2/3 of algae. On the other hand, the conventional algae-proof non-combustible single has an area of 2/3 algae for 3/4 of the test sample and the remaining area of the algae algae.
[0022]
The test contents in Table 2 shown in FIG. 5 are as follows.
That is, the algae-proof asphalt single was subjected to water treatment (immersion) for a predetermined period of time to verify the algae-proof performance. In addition, the conventional non-algae-incombustible single was used as a control material.
Figure 2004162482
Warm water treatment (immersion): Each sample was immersed in room temperature water for a predetermined period (one week, two weeks, three weeks, four weeks).
Algae test: Each sample was placed on an agar medium containing a fertilizer, immersed in an algae suspension, allowed to stand for the above-mentioned predetermined period, and visually observed for algal growth.
Status of algae: ◎ No algae, ○ Spotted algae, △ Trace amount of algae,
▶ Algae was found in 1/2 area and alga was found in × 2/3 area. In the above test, no algae was observed in all singles regardless of the length of the standing period.
[0023]
The test contents in Table 3 shown in FIG. 6 are as follows.
That is, the change in the algal resistance of the anti-algal asphalt single due to aging was verified. In addition, the conventional non-algae-incombustible single was used as a control material. For the aging acceleration treatment, each test sample was cured using an apparatus of the Technical Research Institute of Tajima Roofing Co., Ltd.
Figure 2004162482
Aging treatment: After each material was cured for a predetermined time (100 hours, 200 hours, 800 hours) with an accelerated aging tester, an algae test was performed on each.
Algae test: Each sample was placed on an agar medium containing a fertilizer, immersed in an algae suspension, allowed to stand for a predetermined period (1 to 4 weeks), and then visually observed for the algal growth status.
Status of algae: ◎ No algae, ○ Spotted algae, △ Trace amount of algae,
▲ There is algae in the area of 1/2, and there is algae in the area of × 2/3.
In the above test, when the aging treatment time was up to 200 hours, no algae was observed in the anti-algal asphalt single according to the present invention, regardless of the length of the standing period. When the aging treatment time was set to 800 hours, the algae-proof asphalt single A1 showed a slight decrease in alga-proof performance in the range of no algae and a slight amount as compared with A1 in the microalgae asphalt single A2.
[0025]
【The invention's effect】
As described above, the invention of the present application is an asphalt single obtained by impregnating and coating asphalt on an inorganic fiber base material and pressing a mineral sand on an asphalt surface formed by coating, the asphalt layer on the front surface side Since the particulates are dispersed with the alga-proofing agent and the binder by mixing with the mineral sand, the durability of the alga-proofing function and the weather resistance are remarkably improved, and the aesthetic appearance of the asphalt single roof can be maintained for a long time.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an asphalt single as a roof finishing material according to an embodiment of the present invention.
FIG. 2 is an enlarged view of a main part of FIG.
FIG. 3 is a schematic diagram showing a configuration of a granular material.
FIG. 4 is a diagram showing Table 1 relating to an algal control performance test.
FIG. 5 is a diagram showing Table 2 related to an algal control performance test.
FIG. 6 is a diagram showing Table 3 relating to an algal control performance test.
[Explanation of symbols]
11. . . . . . Asphalt single 12. . . . . .Base layer 13. . . . . . 13. Surface asphalt layer . . . . .Backside asphalt layer 15. . . . . . Mineral sand layer (colored sand layer)
16. . . . . .Mineral sand layer 17. . . . . . Granules (algae-proof means)

Claims (5)

Translated fromJapanese
無機質繊維にアスファルトを含浸してなる基層と、この基層の表裏両面に形成されるアスファルト層と、このアスファルト層の表面に形成した鉱物質砂粒層とを具えたアスファルトシングルにおいて、屋根部への敷設時に上側となるアスファルト層表面に分散適性ならびに溶出制御機能を有する防藻手段を具えことを特徴とする防藻性を具えたアスファルトシングル。Laying to the roof of an asphalt single with a base layer made of inorganic fiber impregnated with asphalt, asphalt layers formed on both front and back surfaces of this base layer, and a mineral sand layer formed on the surface of this asphalt layer An asphalt single with anti-algal properties, characterized in that the surface of the asphalt layer, sometimes on the upper side, is provided with anti-algal means having dispersibility and elution control functions.請求項1記載のアスファルトシングルにおいて、前記防藻手段は、アスファルト層表面に鉱物質砂粒と混在するように撒布定着させた防藻剤およびバインダーにより所定の粒径に形成された粒状体で構成して、バインダーにより防藻剤を保持させて防藻剤の溶出を制御するとともに、微粉状の防藻剤をバインダーを介して粒状体に形成することによりアスファルト層への撒布時に良好な分散適性を得るようにしたこと特徴とする防藻性を具えたアスファルトシングル。The asphalt single according to claim 1, wherein the anti-algal means is formed of a granular material formed to a predetermined particle size by using an alga-proofing agent and a binder which are spread and fixed on the surface of the asphalt layer so as to be mixed with mineral sand particles. By controlling the dissolution of the anti-algal agent by holding the anti-algal agent with the binder, and forming a fine powdery algal agent into the granular material via the binder, good dispersion suitability at the time of spraying on the asphalt layer. Asphalt single with anti-algal properties characterized by being obtained.請求項2記載のアスファルトシングルにおいて、防藻剤はトリアジン系化合物であり、防藻手段としての粒状体は紫外線防止材を含有することを特徴とする防藻性を具えたアスファルトシングル。The asphalt single having anti-algal properties according to claim 2, wherein the anti-algal agent is a triazine-based compound, and the granular material as the anti-algal means contains an ultraviolet ray preventing material.請求項2又は請求項3記載のアスファルトシングルにおいて、防藻手段としての粒状体は顔料を含有すること特徴とする防藻性を具えたアスファルトシングル。The asphalt shingle according to claim 2 or 3, wherein the granular material as the anti-algae means contains a pigment.請求項3又は4いずれか記載のアスファルトシングルにおいて、紫外線防止材および/又は顔料はカーボンあること特徴とする防藻性を具えたアスファルトシングル。The asphalt shingle according to claim 3 or 4, wherein the ultraviolet ray preventing material and / or pigment is carbon.
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