JPS62149407A - Compression molding of multilayer resin molded form - Google Patents
Compression molding of multilayer resin molded formInfo
- Publication number
- JPS62149407A JPS62149407A JP60291756A JP29175685A JPS62149407A JP S62149407 A JPS62149407 A JP S62149407A JP 60291756 A JP60291756 A JP 60291756A JP 29175685 A JP29175685 A JP 29175685A JP S62149407 A JPS62149407 A JP S62149407A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- intermediate sheet
- resin
- molding
- molded
- 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.)
- Pending
Links
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
Description
【発明の詳細な説明】 「産業上の利用分野」 本発明は、多層樹脂成形品の圧縮成形方法に関する。[Detailed description of the invention] "Industrial application field" The present invention relates to a compression molding method for multilayer resin molded products.
「従来の技術」
現在、各種の樹脂の中から用途に応じてそれぞれ機能の
優れた樹脂を適宜選定して組み合わせ、多層成形し、そ
れぞれの（憂れた機能を具備した多機能の成形品を得る
成形方法が行われている。``Conventional technology'' At present, resins with excellent functions are selected from among various resins depending on the application, combined, and multilayer molded to create multifunctional molded products with each (desired function). A molding method is being used to obtain
この成形方法の一例としては、まず、一つの樹脂材料を
金型のキャビティ内に充填して金型により圧縮成形した
のち固化あるいは硬化して第１樹脂層を形成し、次いで
金型を開いて第１樹脂層の上方の空間部に他の樹脂材料
を充填し、しかる後、金型により再度圧縮して第２樹脂
層を形成することで、上下２層からなる樹脂成形品を得
る方法が知られている。As an example of this molding method, first, a single resin material is filled into the cavity of a mold, compression molded in the mold, solidified or hardened to form a first resin layer, and then the mold is opened. The space above the first resin layer is filled with another resin material, and then compressed again using a mold to form a second resin layer, thereby obtaining a resin molded product consisting of two upper and lower layers. Are known.
たとえば、特開昭６０−１８３１９号公報には、金型内
に軟化した樹脂を所定債だけ入れて加圧成形を行なって
第１樹脂層を形成したのち、型を開いて第２の樹脂を入
れ、型を閉じて再び加工成形を行なうことにより、第１
樹脂層の上に第２樹脂層を形成する方法が開示されてい
る。For example, in Japanese Patent Application Laid-open No. 60-18319, a predetermined amount of softened resin is placed in a mold and pressure molded to form a first resin layer, and then the mold is opened and a second resin layer is formed. By filling the mold, closing the mold and processing and molding again, the first
A method of forming a second resin layer on a resin layer is disclosed.
ところが、この方法では、上述の如く第１樹脂眉の成形
後に一旦金型の型開きを行い、しかる後第２樹脂層を形
成することから、どうしても作業の途中で型開き工程が
不可欠となり、その分だけ成形サイクルタイムが長くな
ってしまうという欠点があった。However, in this method, as mentioned above, the mold is opened once after molding the first resin eyebrow, and then the second resin layer is formed, so the mold opening step is inevitably required in the middle of the work. The drawback was that the molding cycle time became longer.
そこで、上記型開き工程を必要とせずに多層樹脂成形品
を成形する方法として、金型の凸型と凹型との間に中間
シートをセットし、該中間シートの両面に異種の成形樹
脂材料を同時に射出充填して、上記中間シートでもって
画成形樹脂材料の混ざり合いを防止しながら射出成形す
るとともに、成形サイクルタイムの短縮化を図るように
することが考えられる。Therefore, as a method for molding a multilayer resin molded product without requiring the mold opening process described above, an intermediate sheet is set between the convex mold and the concave mold, and different types of molding resin materials are applied to both sides of the intermediate sheet. It is conceivable to perform injection filling at the same time and perform injection molding while preventing the image molding resin materials from mixing with the intermediate sheet, and to shorten the molding cycle time.
「発明が解決しようとする問題点」
しかし、この方法では、特に薄物の成形品を成形する場
合、上記中間シートもその肉厚の成形品全体に及ぼす影
百を考慮して出来るだけ薄手のものが用いられることか
ら、樹脂を射出により金型に充填するばあいには樹脂材
料の金型への射出流動圧により、またブランクの形で金
型内に充填して金型を閉じるばあいには、成形時の樹脂
の流動圧により、上記中間シートが金型内で流されたり
、破れたりして、所期の目的とする種々の優れた樹脂特
性を備えた多層樹脂成形品をは実に得ることができない
おそれがある。"Problems to be Solved by the Invention" However, in this method, especially when molding a thin product, the intermediate sheet must be made as thin as possible, taking into account the effect of its thickness on the entire molded product. is used, when filling a mold with resin by injection, the injection flow pressure of the resin material into the mold, and when filling the mold in the form of a blank and closing the mold. In this case, the intermediate sheet is washed away or torn in the mold due to the flow pressure of the resin during molding, making it impossible to produce a multilayer resin molded product with various excellent resin properties as desired. There is a possibility that you will not be able to obtain it.
本発明は、かかる諸点に鑑みてなされたものであり、そ
の目的とするところは、中間シートに対する成形樹脂材
料の流動圧が及ぼす影響を少なくするようにすることに
より、上記中間シートの金型内での流れ、彼れを防止し
、成形品周縁部におけるシートのしわ発生を防止し、成
形品周縁部におけるシートのしわ発生を防止、成形サイ
クルタイムの短縮化を図りつつ、所期の目的とする種々
の優れた樹脂特性を備えた多層樹脂成形品を確実に得ん
とすることにある。The present invention has been made in view of the above points, and an object thereof is to reduce the influence of the flow pressure of the molding resin material on the intermediate sheet, thereby improving the inside of the mold of the intermediate sheet. This prevents the flow and deformation of the sheet, prevents the sheet from wrinkling at the periphery of the molded product, prevents the sheet from wrinkling at the periphery of the molded product, shortens the molding cycle time, and achieves the intended purpose. The object of the present invention is to reliably obtain a multilayer resin molded product having various excellent resin properties.
「問題点を解決するための手段」
本発明は、凹状型に中間シートを保持部材によりほぼ張
設した状態にて保持し、その後、中間シートの両面側に
各樹脂を存在させた状態で凹状型及び凸状型の型締めを
して圧縮成形すると同時に、中間シートを凸状型の成形
面部に樹脂を介して被装するようにする。"Means for Solving the Problems" The present invention involves holding an intermediate sheet in a concave mold in a substantially stretched state using a holding member, and then forming a concave mold with each resin present on both sides of the intermediate sheet. At the same time as the mold and the convex mold are clamped and compression molded, the intermediate sheet is covered with a resin on the molding surface of the convex mold.
「作用」
本発明においては、凹状型に中間シートを保持部材によ
りほぼ張設した状態にて保持し、その後、中間シートの
両面側に各樹脂を存在させた状態で金型の型締めにより
圧縮成形するので、一度に複数（２層）の成形樹脂層を
有する樹脂成形品を成形でき、従来のごとき型開き工程
が不要となって成形サイクルタイムの短縮化が図られる
ことになる。"Operation" In the present invention, the intermediate sheet is held in a concave mold with a holding member in a substantially stretched state, and then the intermediate sheet is compressed by clamping the mold with each resin present on both sides of the intermediate sheet. Since it is molded, it is possible to mold a resin molded product having a plurality of molded resin layers (two layers) at a time, and the conventional mold opening process is no longer necessary, thereby shortening the molding cycle time.
更に、上記中間シートに対する成形樹脂材料の射出流動
圧の影響がなくなり、薄手の中間シートを用いる場合で
あっても中間シートが金型内で流されたり、破れたりす
ることはなく、所期の目的とする種々の優れた樹脂特性
を備えた多層樹脂成形品が確実に得られることとなる。Furthermore, the influence of the injection flow pressure of the molding resin material on the intermediate sheet is eliminated, and even when using a thin intermediate sheet, the intermediate sheet will not be washed away or torn within the mold, and the desired result will not be achieved. A multilayer resin molded product having various desired excellent resin properties can be reliably obtained.
「実施例」 以下、本発明の実施例を図面に基づいて説明する。"Example" Embodiments of the present invention will be described below based on the drawings.
第１図ないし第３図は、圧縮成形装置１により多層樹脂
成形品Ａを圧縮成形する本発明方法に係る成形工程を示
し、その工程は、先ず、成形装置１における固定盤２上
に固設された凸型３と、その上方に対応して配設され可
動盤４と一体に昇降する凹型５とから成る金型６を、第
１図に示すように、上記凹型５の上昇端位置への移動に
より、型開きする。この状態において、凸型３と凹型５
との間に、例えばガラス繊維、ポリカーボネート、ポリ
プレンテレフタレート等の基材からなる中間シートＢを
投入し、外周ホールド部材７により、中間シー）Ｈの端
部の下面を支える。このようにして、中間シートＢがセ
ットされ、その後、グイクションピン１２の上昇により
外周ホールド部材７が上昇する。1 to 3 show a molding process according to the method of the present invention in which a multilayer resin molded product A is compression molded using a compression molding apparatus 1. As shown in FIG. 1, a mold 6 consisting of a convex mold 3 and a concave mold 5 arranged above the convex mold 3 and raised and lowered together with the movable platen 4 is moved to the rising end position of the concave mold 5, as shown in FIG. The mold opens by moving. In this state, the convex mold 3 and the concave mold 5
An intermediate sheet B made of a base material such as glass fiber, polycarbonate, polyprene terephthalate, etc. is inserted between the intermediate sheet B and the outer peripheral holding member 7 to support the lower surface of the end of the intermediate sheet H. In this way, the intermediate sheet B is set, and then the outer periphery holding member 7 is raised by the lifting of the traction pin 12.
そして、第２図に示されるように、凹型５を下降させて
、中間シートＢが凹型５に外周ホールド部材７によりほ
ぼ張設された状簿にしその後、中間シートＢの両面に、
凹型５及び凸型３により各樹脂を射出する。すなわち、
上記金型６の凸型３と凹型５との間に形成されたキャビ
ティ８に、例えばポリカーボネート、アクリル樹脂、ポ
リブチレンチレフタート等の第１の成形樹脂材料Ａ、
と、ポリプロピレン、アクリロ−トリル、ブタジェン
・スチレン樹脂等の第２の成形樹脂材料Ａ２ とを、そ
れぞれ、凹型５、凸型３から射出充填する。その方法は
、上記凸型３および凹型、５にそれぞれキャビティ８に
開口するように貫通形成された供給路９、ｌＯと、該各
供給路９．１０の型５．３の外面の開口部にそれぞれ接
続された射出成形機１１．１１と、を利用し、溶融され
た成形樹脂材料ＡＩ、Ａ２を、射出成形機１１．１１で
加圧して供給路９．１０を介してキャピテイ８内の中間
シー）Ｂの両面に同時に射出充填するのである。Then, as shown in FIG. 2, the concave mold 5 is lowered so that the intermediate sheet B is almost stretched over the concave mold 5 by the outer periphery holding member 7. Then, on both sides of the intermediate sheet B,
Each resin is injected using the concave mold 5 and the convex mold 3. That is,
In the cavity 8 formed between the convex mold 3 and the concave mold 5 of the mold 6, a first molding resin material A such as polycarbonate, acrylic resin, polybutylene lentilate, etc.
and a second molding resin material A2 such as polypropylene, acrylotrile, butadiene-styrene resin, etc. are injected and filled from the concave mold 5 and the convex mold 3, respectively. In this method, supply channels 9 and 1O are formed through the convex mold 3 and the concave mold 5 so as to open into the cavity 8, respectively, and the openings of the respective supply channels 9.10 on the outer surface of the mold 5.3. Using the injection molding machines 11.11 connected to each other, the molten molding resin materials AI and A2 are pressurized by the injection molding machines 11.11 and sent through the supply path 9.10 to the middle of the cavity 8. C) Both sides of B are injected and filled at the same time.
このとき、上記供給路９．１０は、キャビティ８中夫の
対向位置に開口しているので、キャビティ８内に射出さ
れる成形樹脂材料ＡＩ、Ａ２ は、中央位置から周囲に
流れ、これにより、成形樹脂材料ＡＩ 、Ａ２ の層
厚を均一にすることができる。At this time, the supply path 9.10 opens at a position opposite to the center shaft of the cavity 8, so the molding resin materials AI, A2 injected into the cavity 8 flow from the center position to the periphery, thereby The layer thicknesses of the molded resin materials AI and A2 can be made uniform.
また、このように、中間シートＢが凹型５及び外周ホー
ルド部材７により保持された状態で、キャビティ８に成
形樹脂材料Ａ７、Ａ２ が射出充填されるため、中間シ
ー）Ｂに対する成形樹脂材料Ａｌ、Ａ２ の射出流動圧
の影響がなくなる。このことから、中間シートＢは、そ
の肉厚が薄いものであっても、上記成形樹脂材料ＡＩ、
Ａ２ の射出圧によってキャビティ８内で流れたり、破
れたりすることが確実に防止できる。In addition, since the molded resin materials A7 and A2 are injected and filled into the cavity 8 while the intermediate sheet B is held by the concave mold 5 and the outer peripheral holding member 7, the molded resin materials Al, The influence of injection flow pressure of A2 is eliminated. From this, even if the intermediate sheet B is thin, the molded resin material AI,
It is possible to reliably prevent the injection pressure of A2 from flowing or breaking within the cavity 8.
そして、こうして、金型６のキャビティ８に成形樹脂材
料ＡＩ、Ａ２を射出充填した後は、第３図に示すように
、可動盤４の下降移動により凹型５を下降させ、及び、
外周ホールド部材７も下降し、金型６を型締めして上記
成形樹脂材料Ａ１、Ａ２に圧縮力を加え、樹脂を流動さ
せる。これと同時に、中間シー）Ｂに対する外周ホール
ド部材７の保持力を調整し、中間シー）Ｂの張り加減を
調整し、中間シー）Ｂが凸型３の成形面部に成形樹脂材
料Ａ２ を介して被装されるようにする。このように、
金型６を型締めしながら、中間シートＢの張りを調整し
ている。そして、成形樹脂材料ＡＩ、Ａ２ を冷却固化
または硬化させる。その後、可動盤４の上昇移動によっ
て、金型６を型開きして、多層樹脂成形品Ａと、供給路
９．１０で固化または硬化した樹脂部（ランナ）と、を
切り離すことにより、多層（２層）樹脂成形品へが成形
される。After the molding resin materials AI and A2 are injected and filled into the cavity 8 of the mold 6 in this way, the concave mold 5 is lowered by the downward movement of the movable platen 4, and, as shown in FIG.
The outer periphery holding member 7 also descends, clamps the mold 6, applies compressive force to the molded resin materials A1 and A2, and causes the resin to flow. At the same time, the holding force of the outer periphery holding member 7 to the intermediate seam) B is adjusted, the tension of the intermediate seam) B is adjusted, and the intermediate seam) B is attached to the molding surface of the convex mold 3 via the molded resin material A2. Make it covered. in this way,
While the mold 6 is being clamped, the tension of the intermediate sheet B is being adjusted. Then, the molded resin materials AI and A2 are cooled and solidified or hardened. Thereafter, the mold 6 is opened by the upward movement of the movable platen 4, and the multilayer resin molded product A and the resin part (runner) solidified or hardened in the supply path 9.10 are separated. 2 layers) is molded into a resin molded product.
このように、成形された多層樹脂成形品Ａは、上記成形
樹脂材料Ａ１、Ａ２ の射出工程において中間シー）Ｂ
の流れがなく、また、成形樹脂材料ＡＩ、Ａ２ が中間
シー）Ｂによって正確に分離されているので、所期の目
的とする種々の優れた樹脂特性を備えた上下２層からな
る樹脂成形品へとなる。In this way, the molded multilayer resin molded product A is formed by the intermediate sheet (B) in the injection process of the molding resin materials A1 and A2.
There is no flow, and the molded resin materials AI and A2 are accurately separated by the intermediate sear) B, resulting in a resin molded product consisting of two layers, upper and lower, with various excellent resin properties for the intended purpose. I feel exhausted.
また１、成形樹脂材料ＡＩ、Ａ２ を中間シートＢの両
面に同時に射出充填して一度に複数（２層）の成形樹脂
層を有する樹脂、成形品Ａが得られることから、一層ご
とに型開きする方法に比べて成形サイクルタイムを大幅
に短縮することができる。In addition, 1. Molding resin materials AI and A2 are simultaneously injected and filled onto both sides of intermediate sheet B to obtain molded product A, which has multiple (two) molding resin layers at once, so the mold is opened layer by layer. The molding cycle time can be significantly reduced compared to other methods.
更に、金型６に中間シートＢのホールド構成をもたせる
ことにより、装置が単純な構成になる。Furthermore, by providing the mold 6 with a holding structure for the intermediate sheet B, the apparatus becomes simple in structure.
また、金型６を型締めしながら、中間シー）Ｂの張りを
調整しており、成形サイクルタイムが短い。In addition, the tension of the intermediate seam B is adjusted while the mold 6 is clamped, resulting in a short molding cycle time.
また、中間シートＢを外周ホールド部材７により保持し
ているので、中間シートＢの型内投入の位置精度が高い
。Furthermore, since the intermediate sheet B is held by the outer circumferential holding member 7, the positional accuracy of placing the intermediate sheet B into the mold is high.
また、第４図には、圧縮成形装置１の詳細な構成が示さ
れており、前記第２図の工程に対応している。なお、図
において、符号１３は、断熱材及びヒータである。Further, FIG. 4 shows a detailed configuration of the compression molding apparatus 1, which corresponds to the process shown in FIG. 2. In addition, in the figure, the code|symbol 13 is a heat insulating material and a heater.
なお、実施例においては、中間シートを張設後、中間シ
ートの両面側に各樹脂を射出しているが、特に下側樹脂
については、中間シートの保持前に下側の型内に供給し
ておいてもよい。In the example, after the intermediate sheet is stretched, each resin is injected onto both sides of the intermediate sheet, but in particular, the lower resin is supplied into the lower mold before holding the intermediate sheet. You can leave it there.
「発明の効果」
以上説明したように、本発明の方法によれば、保持部材
により中間シートを保持するようにしているので、中間
シートに対する成形樹脂材料の射出流動圧が及ぼす影響
を少なくするようにすることにより、中間シートの金型
内での流れ、岐れを防止し、成形品周縁部におけるシー
トのしわ発生を防止し、成形サイクルタイムの短縮化を
図りつつ、所期の目的とする種々の１憂れた樹脂特性を
備えた多層樹脂成形品を確実に１昇ることができる。"Effects of the Invention" As explained above, according to the method of the present invention, the intermediate sheet is held by the holding member, so that the influence of the injection flow pressure of the molding resin material on the intermediate sheet is reduced. By doing so, it is possible to prevent the intermediate sheet from flowing or splitting in the mold, prevent the occurrence of wrinkles in the sheet at the periphery of the molded product, shorten the molding cycle time, and achieve the desired purpose. It is possible to reliably improve multilayer resin molded products with various resin properties.
第１．２．３図は、それぞれ、多層樹脂成形品の圧縮成
形工程を示す概略工程図、
第４図は、圧縮成形装置の詳細な構成説明図である。
１・・・・・・圧縮成形装置、２・・・・・・固定盤、
３・・・・・・凸型、４・・・・・・可動盤、５・・・
・・・凹型、６・・・・・・金型、７・・・・・・外周
ホールド部材、８・・・・・・キャビティ、９．１０・
・・・・・供給路、１１・・・・・・射出成形機、
１２・・・・・・グイクッションピン、１３・・・・・
・断熱材及びヒータ、
Ａ・・・・・・多層樹脂成形品、
Ａ１、Ａ２ ・・・・・・成形樹脂材料、Ｂ・・団・中
間シート。1, 2, and 3 are schematic process diagrams showing the compression molding process of a multilayer resin molded product, and FIG. 4 is a detailed structural explanatory diagram of the compression molding apparatus. 1... Compression molding device, 2... Fixed platen,
3...Convex type, 4...Movable plate, 5...
... Concave mold, 6 ... Mold, 7 ... Outer periphery holding member, 8 ... Cavity, 9.10.
...Supply channel, 11...Injection molding machine, 12...Gui cushion pin, 13...
- Heat insulating material and heater, A... Multilayer resin molded product, A1, A2... Molded resin material, B... Group/intermediate sheet.
Claims (1)
にて保持し、その後、中間シートの両面側に各樹脂を存
在させた状態で凹状型及び凸状型の型締めをして圧縮成
形すると同時に、中間シートを凸状型の成形面部に樹脂
を介して被装するようにすることを特徴とする多層樹脂
成形品の圧縮成形方法。The intermediate sheet is held in a concave mold in a state in which it is almost stretched by a holding member, and then the concave mold and the convex mold are clamped and compression molded with each resin present on both sides of the intermediate sheet. A method for compression molding a multilayer resin molded product, characterized in that, at the same time, an intermediate sheet is coated on the molding surface of the convex mold with a resin interposed therebetween.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60291756A JPS62149407A (en) | 1985-12-24 | 1985-12-24 | Compression molding of multilayer resin molded form |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60291756A JPS62149407A (en) | 1985-12-24 | 1985-12-24 | Compression molding of multilayer resin molded form |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62149407A true JPS62149407A (en) | 1987-07-03 |
Family
ID=17773010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60291756A Pending JPS62149407A (en) | 1985-12-24 | 1985-12-24 | Compression molding of multilayer resin molded form |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62149407A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5783132A (en) * | 1994-06-15 | 1998-07-21 | Sumitomo Chemical Company, Limited | Process for producing a fiber-reinforced thermoplastic resin molded article |
| US6331263B1 (en) | 1993-12-22 | 2001-12-18 | Idemitsu Petrochemical Co., Ltd. | Method for producing laminated moldings |
-
1985
- 1985-12-24 JP JP60291756A patent/JPS62149407A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6331263B1 (en) | 1993-12-22 | 2001-12-18 | Idemitsu Petrochemical Co., Ltd. | Method for producing laminated moldings |
| US5783132A (en) * | 1994-06-15 | 1998-07-21 | Sumitomo Chemical Company, Limited | Process for producing a fiber-reinforced thermoplastic resin molded article |
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