JPH0441043B2 - - Google Patents
Info
- Publication number
- JPH0441043B2 JPH0441043B2 JP5567283A JP5567283A JPH0441043B2 JP H0441043 B2 JPH0441043 B2 JP H0441043B2 JP 5567283 A JP5567283 A JP 5567283A JP 5567283 A JP5567283 A JP 5567283A JP H0441043 B2 JPH0441043 B2 JP H0441043B2
- Authority
- JP
- Japan
- Prior art keywords
- resin
- acrylic resin
- vinyl chloride
- cavity
- chloride resin
- 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.)
- Expired
Links
- 239000011347 resin Substances 0.000 claims description 42
- 229920005989 resin Polymers 0.000 claims description 42
- 239000004925 Acrylic resin Substances 0.000 claims description 37
- 229920000178 Acrylic resin Polymers 0.000 claims description 37
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 claims description 26
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 238000002347 injection Methods 0.000 description 20
- 239000007924 injection Substances 0.000 description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
〔技術分野〕
本発明は内層が塩化ビニル樹脂で外層がアクリ
ル系樹脂の雨樋部品を製造する方法に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a method of manufacturing a rain gutter component whose inner layer is made of vinyl chloride resin and whose outer layer is made of acrylic resin.
従来の合成樹脂の雨樋部品にあつては塩化ビニ
ル樹脂にて全体を構成されているため、熱変形し
やすくまた耐候性に乏しいという欠点があつた。
また雨樋においては最近耐候性をよくするため塩
化ビニル樹脂にて形成した雨樋の表面にアクリル
樹脂を被覆することも行なわれているが、塩化ビ
ニルにて主体を構成する工程と表面にアクリル樹
脂を被覆する工程との二工程となり製造が複雑に
なるという欠点があつた。
Conventional synthetic resin rain gutter parts are entirely made of vinyl chloride resin, and therefore have the drawbacks of being easily deformed by heat and having poor weather resistance.
In addition, recently, in order to improve the weather resistance of rain gutters, the surface of rain gutters made of vinyl chloride resin has been coated with acrylic resin. The drawback was that the manufacturing process was complicated because it required two steps including the resin coating step.
本発明は叙述の点に鑑みてなされたものであつ
て、本発明の目的とするところは外層がアクリル
系樹脂で内層が塩化ビニル樹脂のため熱変形しに
くく、耐候性がよい上、寸法安定性がよく、また
弾性に富み割れ難く、しかも一度の工程で簡単に
製造できる雨樋部品の製造方法を提供するにあ
る。
The present invention has been made in view of the above points, and the object of the present invention is that the outer layer is an acrylic resin and the inner layer is a vinyl chloride resin, so it is difficult to deform due to heat, has good weather resistance, and has dimensional stability. To provide a method for manufacturing rain gutter parts that have good properties, are highly elastic, are hard to break, and can be easily manufactured in a single process.
本発明雨樋部品の製造方法は雨樋部品形成用の
キヤビテイ１にアクリル系樹脂２を注入し、次い
で塩化ビニル樹脂３を上記注入したアクリル系樹
脂２の内部に注入してキヤビテイ１内に樹脂を略
充満させ、最終的にアクリル系樹脂２をキヤビテ
イ１に注入し、内層が塩化ビニル樹脂で内層の全
表面を覆う外層がアクリル系樹脂になるように形
成するものであつて、上記のように構成すること
により従来例の欠点を解決したものである。つま
り外層がアクリル系樹脂、内層が塩化ビニル樹脂
になるように同時に射出成形することによりアク
リル系樹脂と塩化ビニル樹脂の両方の特徴を有す
る雨樋部品を簡単に製造できるようにしたもので
ある。
The method for manufacturing rain gutter parts of the present invention is to inject acrylic resin 2 into a cavity 1 for forming rain gutter parts, and then inject vinyl chloride resin 3 into the injected acrylic resin 2 to inject the resin into the cavity 1. Finally, the acrylic resin 2 is injected into the cavity 1, and the inner layer is made of vinyl chloride resin and the outer layer covering the entire surface of the inner layer is made of acrylic resin, as described above. This configuration solves the drawbacks of the conventional example. In other words, by simultaneously injection molding the outer layer of acrylic resin and the inner layer of vinyl chloride resin, it is possible to easily manufacture rain gutter parts that have the characteristics of both acrylic resin and vinyl chloride resin.
以下本発明を実施例により詳述する。４は塩化
ビニル樹脂３を射出する第１射出シリンダで先端
に射出口５を有している。この第１射出シリンダ
４内には可動マンドレル１４を移動自在に内装し
てあり、可動マンドレル１４の樹脂通路６には逆
止弁７を設けてある。８は第１射出シリンダ４内
に設けた第１射出スクリユーであつて、この第１
射出スクリユー８によつて樹脂通路６を介して射
出口５から射出されるようになつている。９はア
クリル系樹脂２を射出する第２射出シリンダであ
つて、第１射出シリンダ４に直交するように配置
されている。第２射出シリンダ９の第１射出シリ
ンダ４と連通する連通口１０には逆止弁１１を設
けてある。１２は第２射出シリンダ９内に設けた
第２射出スクリユーであつて、第２射出スクリユ
ー１２によつて連通路１０を介して射出口５から
射出されるようになつている。１３は雨樋部品を
成形する金型であつて、雨樋部品形成用のキヤビ
テイ１を有している。本実施例の場合雨樋部品と
して軒樋継手Ａを形成するためキヤビテイ１は断
面略コ字状になつている。しかして金型１３のキ
ヤビテイ１と連通するスプルー１５と第１射出シ
リンダ４の射出口５とを合致させて次のように射
出成形して軒樋継手Ａを製造する。先ず、可動マ
ンドレル１４を後退させた状態でアクリル系樹脂
２を第２射出シリンダ９から射出して第２図ａに
示すようにキヤビテイ１内にアクリル系樹脂２を
所定量注入する。かかるアクリル系樹脂としては
ポリメチルメタアクリレートのようなアクリル樹
脂の他に、アクリロニトリル−アクリルゴム−ス
チレン樹脂（AAS樹脂）、メタクリル酸メチル−
アクリルゴム−スチレン樹脂（MAS樹脂）等が
ある。なお上記アクリル系樹脂の代わりにアクリ
ロニトリル−エチレンプロピレンジエン共重合ゴ
ム−スチレン樹脂（AES樹脂）も同様に用いる
ことができる。次いで可動マンドレル１４を前進
させて、第１射出シリンダ４から樹脂通路６を介
して射出口５からキヤビテイ１内に塩化ビニル樹
脂を射出して第２図ｂに示すようにアクリル系樹
脂２内に塩化ビニル樹脂３が内包されるように射
出していき、第２図ｃに示すようにキヤビテイ１
内に樹脂を略充満させる。かかる塩化ビニル樹脂
３としては通常の塩化ビニル樹脂以外に塩化ビニ
ル樹脂の廃材を使用してもよい。樹脂がキヤビテ
イ１内に略充満した後可動マンドレル１４を後退
させてからアクリル系樹脂２を少し射出して第２
図ｄに示すように樹脂を完全に充満させる。する
と略全内外面及び全周縁がアクリル系樹脂２で内
部に塩化ビニル樹脂３が充填された軒樋継手Ａが
形成される。この際全内外面及び周縁にアクリル
系樹脂２が行き亘り内部に塩化ビニル樹脂３が位
置する理由はアクリル系樹脂２の方が塩化ビニル
樹脂３より流動性がよいためである。上記のよう
に全内外面及び全周縁をアクリル系樹脂２として
内部を塩化ビニル樹脂３とするとアクリル系樹脂
２と塩化ビニル樹脂３の両者の利点を活かし欠点
を補える。つまりアクリル系樹脂２により熱変形
し難く、耐候性が良く（変色し難い）、しかも寸
法安定性がよい上、表面が硬くなり、塩化ビニル
樹脂３により弾性に富みねばり強く、割れ難くな
りアクリル系樹脂のもろいという欠点を補なつ
た。上記のようにして第３図に示すような軒樋継
手Ａ以外、第４図のような集水器Ｂ、第５図に示
すような止水器Ｃ、第６図に示すようなエルボＤ
等の雨樋部品も同様に製造できる。ここで矢印イ
はゲート位置を示す。また止水器Ｃの場合第７図
に示すように一体の止水器Ｃ間をゲート位置とす
ると、最終的に射出するアクリル系樹脂２で連結
部が形成されて割りやすい。 The present invention will be explained in detail below with reference to Examples. A first injection cylinder 4 injects the vinyl chloride resin 3 and has an injection port 5 at its tip. A movable mandrel 14 is movably housed inside the first injection cylinder 4, and a check valve 7 is provided in the resin passage 6 of the movable mandrel 14. 8 is a first injection screw provided in the first injection cylinder 4;
The resin is injected from the injection port 5 via the resin passage 6 by an injection screw 8. A second injection cylinder 9 injects the acrylic resin 2, and is arranged perpendicular to the first injection cylinder 4. A check valve 11 is provided at a communication port 10 of the second injection cylinder 9 that communicates with the first injection cylinder 4 . Reference numeral 12 denotes a second injection screw provided in the second injection cylinder 9, and the second injection screw 12 injects from the injection port 5 via the communication path 10. 13 is a mold for molding rain gutter parts, and has a cavity 1 for forming rain gutter parts. In this embodiment, the cavity 1 has a substantially U-shaped cross section in order to form the eaves gutter joint A as a rain gutter component. Then, the sprue 15 communicating with the cavity 1 of the mold 13 is aligned with the injection port 5 of the first injection cylinder 4, and the eaves/gutter joint A is manufactured by injection molding as follows. First, with the movable mandrel 14 retracted, the acrylic resin 2 is injected from the second injection cylinder 9 to inject a predetermined amount of the acrylic resin 2 into the cavity 1 as shown in FIG. 2a. In addition to acrylic resins such as polymethyl methacrylate, examples of such acrylic resins include acrylonitrile-acrylic rubber-styrene resin (AAS resin), methyl methacrylate-
Examples include acrylic rubber-styrene resin (MAS resin). Note that an acrylonitrile-ethylene propylene diene copolymer rubber-styrene resin (AES resin) can be used in place of the above-mentioned acrylic resin. Next, the movable mandrel 14 is advanced, and the vinyl chloride resin is injected from the first injection cylinder 4 through the resin passage 6 into the cavity 1 from the injection port 5 and into the acrylic resin 2 as shown in FIG. 2b. The vinyl chloride resin 3 is injected into the cavity 1 as shown in Fig. 2c.
The inside is almost filled with resin. As the vinyl chloride resin 3, a waste material of vinyl chloride resin may be used in addition to ordinary vinyl chloride resin. After the resin fills the cavity 1, the movable mandrel 14 is moved back, and a small amount of acrylic resin 2 is injected into the second cavity.
Fill completely with resin as shown in Figure d. Then, an eaves gutter joint A is formed in which substantially the entire inner and outer surfaces and the entire periphery are made of acrylic resin 2 and the inside is filled with vinyl chloride resin 3. At this time, the reason why the acrylic resin 2 covers all the inner and outer surfaces and the periphery and the vinyl chloride resin 3 is located inside is that the acrylic resin 2 has better fluidity than the vinyl chloride resin 3. As mentioned above, by using the acrylic resin 2 for the entire inner and outer surfaces and the entire periphery and the vinyl chloride resin 3 for the inside, the advantages of both the acrylic resin 2 and the vinyl chloride resin 3 can be utilized to compensate for their drawbacks. In other words, the acrylic resin 2 makes it difficult to deform due to heat, has good weather resistance (does not discolor easily), has good dimensional stability, and has a hard surface, and the vinyl chloride resin 3 makes it highly elastic, strong, and difficult to break.Acrylic resin This compensated for its fragility. In addition to the eaves gutter joint A as shown in Figure 3 as described above, the water collector B as shown in Figure 4, the water stopper C as shown in Figure 5, and the elbow D as shown in Figure 6.
Rain gutter parts such as can also be manufactured in the same way. Here, arrow A indicates the gate position. In the case of the water stopper C, if the gate position is set between the integral water stoppers C as shown in FIG. 7, the connecting portion is formed by the acrylic resin 2 that is finally injected, making it easy to break.
本発明は叙述の如くして製造され、外層がアク
リル系樹脂で内層が塩化ビニル樹脂のため熱変形
しにくく、耐候性がよく、寸法安定性がよい上、
表面が硬く、また弾性に富み割れにくいという利
点があり、しかもキヤビテイ内にアクリル系樹脂
と塩化ビニル樹脂とを交互に射出することにより
一度に成形できて上記のように優れた雨樋部品を
簡単に製造できるものであり、また外層のアクリ
ル系樹脂は塩化ビニル樹脂より流動性がよいため
アクリル系樹脂が成形するときスムーズに行き亘
つて全表面が確実にアクリル系樹脂で覆われるも
のであり、さらに最終的にアクリル系樹脂を射出
するためゲート部もアクリル系樹脂にて被覆され
て一層品質が向上するものである。
The present invention is manufactured as described above, and since the outer layer is an acrylic resin and the inner layer is a vinyl chloride resin, it is difficult to deform due to heat, has good weather resistance, and has good dimensional stability.
The surface has the advantage of being hard and highly elastic, making it difficult to break. Furthermore, by alternately injecting acrylic resin and vinyl chloride resin into the cavity, it can be molded all at once, making it easy to produce excellent rain gutter parts as described above. The acrylic resin in the outer layer has better fluidity than vinyl chloride resin, so the acrylic resin spreads smoothly during molding, ensuring that the entire surface is covered with the acrylic resin. Furthermore, since the acrylic resin is finally injected, the gate portion is also coated with the acrylic resin, further improving the quality.
第１図は本発明方法を実施する装置を示す断面
図、第２図ａ，ｂ，ｃ，ｄは同上の動作説明図、
第３図乃至第７図は同上により得られた雨樋部品
の斜視図であつて、１はキヤビテイ、２はアクリ
ル系樹脂、３は塩化ビニル樹脂である。
FIG. 1 is a sectional view showing an apparatus for carrying out the method of the present invention, and FIGS. 2 a, b, c, and d are explanatory views of the same operation.
FIGS. 3 to 7 are perspective views of the rain gutter parts obtained as above, in which 1 is a cavity, 2 is an acrylic resin, and 3 is a vinyl chloride resin.
Claims (1)
脂を注入し、次いで塩化ビニル樹脂を上記注入し
たアクリル系樹脂の内部に注入してキヤビテイ内
に樹脂を略充満させ、最終的にアクリル系樹脂を
キヤビテイに注入し、内層が塩化ビニル樹脂で内
層の全表面を覆う外層がアクリル系樹脂になるよ
うに成形することを特徴とする雨樋部品の製造方
法。1. Inject acrylic resin into the cavity for forming rain gutter parts, then inject vinyl chloride resin into the inside of the injected acrylic resin to approximately fill the cavity with resin, and finally fill the cavity with acrylic resin. A method for manufacturing rain gutter parts, characterized in that the inner layer is made of vinyl chloride resin and the outer layer is made of acrylic resin, covering the entire surface of the inner layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5567283A JPS59179313A (en) | 1983-03-31 | 1983-03-31 | Manufacture of gutter component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5567283A JPS59179313A (en) | 1983-03-31 | 1983-03-31 | Manufacture of gutter component |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59179313A JPS59179313A (en) | 1984-10-11 |
| JPH0441043B2 true JPH0441043B2 (en) | 1992-07-07 |
Family
ID=13005360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5567283A Granted JPS59179313A (en) | 1983-03-31 | 1983-03-31 | Manufacture of gutter component |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59179313A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0740028A4 (en) * | 1993-12-24 | 1997-04-02 | Sekisui Chemical Co Ltd | Gutter of fiber-containing thermoplastic resin |
-
1983
- 1983-03-31 JP JP5567283A patent/JPS59179313A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59179313A (en) | 1984-10-11 |
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