【発明の詳細な説明】「産業上の利用分野」本発明は樹脂成形品及びその製造方法に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a resin molded product and a method for manufacturing the same.
「従来の技術」従来、剛性のある厚膜を介して両側に樹脂成形部を有す
る成形品は通常以下のように製造している。"Prior Art" Conventionally, a molded product having resin molded parts on both sides via a rigid thick film is usually manufactured as follows.
即ち第６図に例示する様に、金型（６）内でコアピン（
４）、（４）に厚膜（１）をはさみ、射出成形により所
望の樹脂成形品を得る。なお第３図中、（ａ）は金型内
で樹脂を射出成形する状態を説明する図、（ｂ）は射出
成形により得られた樹脂成形品の一部縦断正面図を例示
し、これら図中（２）は樹脂、（５）はゲート（樹脂注
入口）である。That is, as illustrated in FIG. 6, the core pin (
4) Sandwich the thick film (1) between (4) and obtain a desired resin molded product by injection molding. In Fig. 3, (a) is a diagram illustrating a state in which resin is injection molded in a mold, and (b) is a partially vertical front view of a resin molded product obtained by injection molding. Inside (2) is the resin, and (5) is the gate (resin injection port).
「発明が解決しようとする課題」しかし乍ら従来の方法で、厚膜を薄膜に変えた場合、射
出成形時の樹脂の圧力で膜が変形し、所望の樹脂成形品
が得られない、即ち第４図に例示する様に薄膜（６）が
成形品に保持されないという欠点があった。"Problems to be Solved by the Invention" However, when a thick film is changed to a thin film using the conventional method, the film is deformed by the pressure of the resin during injection molding, and the desired resin molded product cannot be obtained. As illustrated in FIG. 4, there was a drawback that the thin film (6) was not retained on the molded product.
なお第４図中、図（ａ）は樹脂射出開始時状態、図（ｂ
）は樹脂射出進行待状態、図（Ｃ）は樹脂射出により得
られた樹脂成形品の一部縦断面を示し、符号（２）は樹
脂、（３）は金型、（４）はコアピン、（５）はゲート
（樹脂注入口）を表わすことは第６図と同様である。In Figure 4, figure (a) shows the state at the start of resin injection, and figure (b) shows the state at the start of resin injection.
) shows a waiting state for resin injection to proceed, and Figure (C) shows a partial vertical cross section of a resin molded product obtained by resin injection, where code (2) is the resin, (3) is the mold, (4) is the core pin, Similarly to FIG. 6, (5) represents a gate (resin injection port).
そこで上記欠点を避けるため、■ 第５図に例示する様に、成型部品（１０）に薄膜（
６）を熱融着し、さらに成型部品（１１）を超音波溶着
させたり（図（ａ）より図（ｂ）に至る）、或いは、■
第６図に例示する様に、成形Ｓ品（１ｏ）、（１１）
のつばを大きくし、薄膜（６）をかしめ乍ら超音波溶着
させ（矢印）たりする（図（ａ）より図（ｂ）に至る）
。Therefore, in order to avoid the above-mentioned drawbacks, ■ As illustrated in Fig. 5, a thin film (
6) and then ultrasonically weld the molded part (11) (from figure (a) to figure (b)), or
As illustrated in Fig. 6, molded S products (1o), (11)
The brim is enlarged, and the thin film (6) is crimped and ultrasonically welded (arrow) (from figure (a) to figure (b)).
.
しかし乍ら上記■はコスト高となる。又■はコスト高と
なると共に部品が大きくなる等の問題点がある。However, the above method (2) results in high cost. In addition, (2) has problems such as high cost and large parts.
上記に鑑み、本発明はこのような問題点を解決するため
開発された樹脂成形品及びその製造方法である。In view of the above, the present invention is a resin molded product and a manufacturing method thereof developed to solve such problems.
「課題を解決するための手段」即ち本発明の樹脂成形品は、薄膜の少くとも一部を介し
て両側に樹脂成形部を備える成形品であって、該薄膜は
無孔質又は孔径が１００μｍ以下の多孔質の膜であり、
この膜に設けた開口部を通じて両側の樹脂を連通させて
構成したことを特徴とするものである。"Means for Solving the Problems" That is, the resin molded product of the present invention is a molded product that has resin molded parts on both sides through at least a part of a thin film, and the thin film is nonporous or has a pore diameter of 100 μm. It is a porous membrane with:
This membrane is characterized by a structure in which resins on both sides are communicated through an opening provided in the membrane.
又本発明の樹脂成形品の製造方法は、上記成形品を製造
する方法（・τおいて、開口部を設けた薄膜の一方の側
から開口部を通じて樹脂を射出成形させる事を特徴とす
るものである。Furthermore, the method for manufacturing a resin molded article of the present invention is the method for manufacturing the molded article described above (wherein τ, the resin is injection molded through the opening from one side of the thin film provided with the opening. It is.
「作用」上記本発明に於いては、後述の説明からも明らかな通り
、その樹脂成形品は、薄膜にその両側の樹脂が連通ずる
開口部を設けたものであるので、薄膜に樹脂成形時流れ
による変形を与えることがなく、所望の形状の且つコン
パ多トな成形品となしうる。"Function" In the above invention, as will be clear from the explanation below, the resin molded product has an opening in the thin film through which the resin on both sides communicates with each other. A compact molded product having a desired shape can be obtained without being deformed by flow.
又本発明の樹脂成形品の製造方法は、開口部を設けた薄
膜の一方の側から開口部を通じて樹脂を射出し成形する
から、安価且つ容易に薄膜を介して両側に樹脂成形部を
有する成形品を製造田来る。In addition, the method for producing a resin molded product of the present invention involves injection molding the resin through the opening from one side of the thin film provided with the opening, so it is inexpensive and easy to mold the resin molded product with resin molded parts on both sides through the thin film. The product is manufactured by a manufacturer.
以下に例示の図面について詳細に本発明を詳述する。The invention will be explained in detail below with reference to the illustrative drawings.
本発明に於いては、第１図（ｂ）に例示する様に、その
樹脂成形品は薄膜（６）を介して両側に樹脂（２）の成
形部を有し、この成形部の樹脂は薄膜に設けた開口部（
８）例えば孔により連通して成形品は構成されている。In the present invention, as illustrated in FIG. 1(b), the resin molded product has a molded part of resin (2) on both sides with a thin film (6) interposed therebetween, and the resin in this molded part is Openings in the thin film (
8) For example, the molded product is configured to communicate with each other through holes.
このような樹脂成形品は、薄膜両側の樹脂が開口部を通
り得る構造であるので膜が薄くても膜に変形を与えるこ
となく薄膜両側に樹脂形成部を一体的に、前述第４図の
如き不具合なく、又第５．６図の如き不具合なく成形す
ることができる。Such resin molded products have a structure in which the resin on both sides of the thin film can pass through the openings, so even if the film is thin, the resin forming parts are integrally formed on both sides of the thin film without deforming the film. Molding can be carried out without such problems as shown in FIG. 5.6.
特に上記樹脂成形品は第１図（ａ）に示す様に、薄膜に
樹脂の通路となる開口部（８）を設けたものを用い、こ
れを金型（３）とコアピン（４）の両方ではさみ、射出
成形により所望の樹脂成形品を得る。In particular, as shown in Fig. 1(a), the above resin molded product is a thin film with an opening (8) that serves as a passage for the resin, and this is used for both the mold (3) and the core pin (4). A desired resin molded product is obtained by using scissors and injection molding.
この製造方法によると、薄膜（６）に樹脂の通路を設け
、金型（３）とコアピン（４）の両方ではさんだ事によ
って射出成形時の膜の変形が解消され、かつ樹脂連通部
によって薄膜が樹脂成形品に保持される。According to this manufacturing method, the thin film (6) is provided with a resin passage and sandwiched between both the mold (3) and the core pin (4), thereby eliminating deformation of the film during injection molding. is held in the resin molded product.
第１図中（２）は樹脂、（５）はダート（樹脂注入口）
である。In Figure 1, (2) is resin, (5) is dart (resin injection port)
It is.
なお本発明に於いて、薄膜が多孔質の場合、その孔径を
１００μｍ以下と限定した理由は１００μ７を超えれば
樹脂の通路を設ける必要がないからである。なおここで
いう薄膜とはその厚みが２ｗｎ以下のものである。In the present invention, when the thin film is porous, the reason why the pore diameter is limited to 100 μm or less is that if it exceeds 100 μ7, there is no need to provide resin passages. Note that the thin film referred to herein is one whose thickness is 2wn or less.
「実施例」以下に本発明の実施例を述べる（第１．２図参照）。"Example"Examples of the present invention will be described below (see Figure 1.2).
孔径１μｍ、厚み帆１ｗ１１の四弗化エチレン樹脂製多
孔質膜（住人電工製ボアフロンＦＰ−１０［１）とポリ
プロピレン樹脂（住人化学製／゛−ブレン）を用いて次
のように実施した。The experiment was carried out as follows using a porous membrane made of tetrafluoroethylene resin (BOAFLON FP-10 [1, manufactured by Sumitomo Electric Co., Ltd.) with a pore diameter of 1 μm and a thickness of 1W11 and a polypropylene resin (made by Sumitomo Chemical Co., Ltd./Bren).
１）■グツ２恒（Ｄ）のボアフロン（６）のグ９畑（ｄ
）の同心円上に００゜１ｍの穴（８）を等間隔で８個あ
ける（第２図（ａ）参照）。1) ■Gutsu 2 Kou (D)'s Boa Fron (6)'s Gu9 field (d
). Drill 8 holes (8) of 00° 1 m at equal intervals on the concentric circles (see Figure 2 (a)).
＠コアビン（４）と金型（３）でボアフロン（６）をは
さみポリプロピレン樹脂（２）を射出成形しく第１図（
ａ）参照）樹脂成形品を得る（第２図（ｂ）参照）。@ Figure 1: Injection molding of polypropylene resin (2) by sandwiching Boa-Flon (6) between core bin (4) and mold (3).
a) Obtain a resin molded product (see FIG. 2(b)).
２）上記１）で得た樹脂成形品を別の金型に入れ、外層
をさらにポリプロピレン樹脂（７）で成形した（第２図
（ｃ）参照）。2) The resin molded product obtained in 1) above was placed in another mold, and the outer layer was further molded with polypropylene resin (7) (see FIG. 2(c)).
なお第２図中Ａ ＝ ｐ １２ ｗｎ、Ｂ＝ｙＪ１１１
＋ｎｍ、 Ｃダ８ｒＭｌである。In addition, in Fig. 2, A = p 12 wn, B = yJ111
+nm, Cda8rMl.
上記により薄膜を両側の樹脂成形部間に正しく月つ容易
に位置させ得た。As a result of the above, the thin film could be accurately and easily positioned between the resin molded parts on both sides.
なお上記に於いて外層（７）は異種の樹脂でも可能であ
る。又樹脂連通用の開口部の寸法及び個数は使用する樹
脂によって変える。Note that in the above, the outer layer (7) may be made of a different type of resin. Also, the dimensions and number of openings for resin communication vary depending on the resin used.
「発明の効果」以上の様に本発明の樹脂成形品によれば、膜を介して両
側に樹脂成形部を持つものに於いて、膜が薄膜であって
も変形を生せしめることなく所望の形状の且つコンパク
トなものとすることが出来る。"Effects of the Invention" As described above, according to the resin molded product of the present invention, even if the film is thin, the desired resin molded product can be achieved without deformation even if the film is thin. It can be made compact in shape.
又本発明の樹脂成形品の製造方法によれば、上記の様な
薄膜を介して両側に樹脂成形部を有する製品が安価且つ
容易に製造出来る。Further, according to the method for manufacturing a resin molded product of the present invention, a product having resin molded parts on both sides via a thin film as described above can be manufactured easily and inexpensively.
なお本発明は、薄膜に、■多孔質膜を用いた場合は例え
ばエアベント（呼吸弁）や、フィルタとして安価で気密
性の高い成形品を提供できる。In addition, in the present invention, when a porous membrane is used as the thin film, it is possible to provide an inexpensive molded article with high airtightness, such as an air vent (breathing valve) or a filter.
＠又ゴムを用いた場合は例えばダイヤフラムとして利用
できる。@Also, if rubber is used, it can be used as a diaphragm, for example.
なお本発明に於いて開口部は、スリットであったり、丸
孔であったりあるいはこれらに切れ込みを設けたもので
あったり、形状は決して限定さ第１るものではない。Note that in the present invention, the opening may be a slit, a round hole, or a notch provided therein, and the shape is by no means limited to the first thing.
第１図は本発明を説明するための図であって、図（ａ）
は製造時状態図、図（ｂ）は出来上った樹脂成形品の１
部縦断正面図、第２図は本発明の詳細な説明するための
図であって、図（ａ）は薄膜の平面図、図（ｂ）は中間
状態の製品の縦断正面図、図（ｃ）は最終状態の製品の
１部縦断正面図、第３図は従来一般の厚膜を介して両側
に樹脂成形部を有する製品を説明するための図であって
、図）ａ）は製造状態図、図（ｂ）は出来上った製品の
１部縦断正面図、第４図は第３図の手段を用いたときの
膜が薄い場合の不具合を説明する図で、図（ａ）は製造
状態の最初の時、図（ｂ）は製造状態の中間の時、図（
Ｃ）は出来上った製品の１部縦断正面図、第５図（ａ）
、（ｂ）及び第６図（ａｉ、（ｂ）は何れも第４図の不
具合を解消するための従来の製造を説明するための図（
何れも図（ａ）のステップから図（ｂ）のステップに進
む）を夫々例示している。（２）・・・樹脂、（３）・・・金型、（４）・・・コ
アピン、（５）・・・ゲート（樹脂注入口）、（６）・
・・薄膜、（７）・・・外層樹脂。第因図（ｂ）第（ａ）（ｂ）■第図（ｂ）FIG. 1 is a diagram for explaining the present invention, and FIG.
Figure (b) shows the finished resin molded product.
FIG. 2 is a diagram for explaining the present invention in detail, in which FIG. 2A is a plan view of a thin film, FIG. ) is a partial longitudinal sectional front view of the product in its final state, and Figure 3 is a diagram for explaining a conventional product that has resin molded parts on both sides through a thick film, and Figure a) shows the manufactured state. Figures 4 and 5 (b) are partial longitudinal sectional front views of the finished product, Figure 4 is a diagram illustrating problems when the film is thin when the method shown in Figure 3 is used, and Figure (a) is At the beginning of the manufacturing state, Figure (b), and at the middle of the manufacturing state, Figure (
C) is a vertical cross-sectional front view of a part of the completed product, Figure 5(a)
, (b) and FIG. 6 (ai, (b) are both diagrams for explaining conventional manufacturing to eliminate the problem in FIG. 4 (
In each case, the steps shown in Figure (a) proceed from the steps in Figure (b). (2) Resin, (3) Mold, (4) Core pin, (5) Gate (resin injection port), (6)
... Thin film, (7) ... Outer layer resin. Figure (b) Figure (a) (b) ■ Figure (b)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63171625AJPH0222020A (en) | 1988-07-09 | 1988-07-09 | Resin molded piece and manufacture thereof |
| EP19890112485EP0350813A3 (en) | 1988-07-09 | 1989-07-07 | Resin molded product, method of producing same, and air vent device using same |
| US07/376,463US5080001A (en) | 1988-07-09 | 1989-07-07 | Resin molded product, method of producing same, and air vent device using same |
| KR1019890009726AKR910009683B1 (en) | 1988-07-09 | 1989-07-08 | Resin molded article, its manufacturing method and ventilating device using the same |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63171625AJPH0222020A (en) | 1988-07-09 | 1988-07-09 | Resin molded piece and manufacture thereof |
| Publication Number | Publication Date |
|---|---|
| JPH0222020Atrue JPH0222020A (en) | 1990-01-24 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63171625APendingJPH0222020A (en) | 1988-07-09 | 1988-07-09 | Resin molded piece and manufacture thereof |
| Country | Link |
|---|---|
| JP (1) | JPH0222020A (en) |
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