JPH04201242A - Method for molding resin - Google Patents
Method for molding resinInfo
- Publication number
- JPH04201242A JPH04201242A JP2333056A JP33305690A JPH04201242A JP H04201242 A JPH04201242 A JP H04201242A JP 2333056 A JP2333056 A JP 2333056A JP 33305690 A JP33305690 A JP 33305690A JP H04201242 A JPH04201242 A JP H04201242A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- nonwoven fabric
- resin
- rtm
- foamed nonwoven
- 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
- 239000011347 resin Substances 0.000 title claims abstract description 26
- 229920005989 resin Polymers 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000000465 moulding Methods 0.000 title claims description 11
- 239000011162 core material Substances 0.000 claims abstract description 15
- 229920001169 thermoplastic Polymers 0.000 claims description 5
- 239000004416 thermosoftening plastic Substances 0.000 claims description 5
- 239000004745 nonwoven fabric Substances 0.000 abstract description 25
- 239000003365 glass fiber Substances 0.000 abstract description 12
- 239000002990 reinforced plastic Substances 0.000 abstract description 9
- 101100491335 Caenorhabditis elegans mat-2 gene Proteins 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000001721 transfer moulding Methods 0.000 description 1
Landscapes
- Moulding By Coating Moulds (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Reinforced Plastic Materials (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は自動車に部品に用いられる強化プラスチック製
品の樹脂成形方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a resin molding method for reinforced plastic products used as parts in automobiles.
（従来の技術）
近年、自動車には強化プラスチック製品か多数使用され
ている。以下、第２図を参照して自動車に用いられる段
部が多い強化プラスチック製品の樹脂成形方法について
説明する。(Prior Art) In recent years, many reinforced plastic products have been used in automobiles. Hereinafter, with reference to FIG. 2, a resin molding method for a reinforced plastic product with many stepped portions used in automobiles will be described.
第２図は例えば、自動車に用いられるリッド（ふた）の
樹脂成形方法について説明する。ます、第２図（Ａ）に
示すように発泡不織布（心材）１１を同図（Ｂ）に示す
ように段部が多い成形型１２に入れて、同図（Ｃ）に示
すように締め上げた後、樹脂を注入して上記発泡不織布
１１に樹脂を含侵させていた。この樹脂の注入はＲＴＭ
（Ｒｅｓｉｎ ｔｒａｎｓｆｅｒ ｍｏｌｄｉｎｇ）に
より行われティた。FIG. 2 explains, for example, a resin molding method for a lid used in an automobile. First, as shown in Fig. 2(A), the foamed nonwoven fabric (core material) 11 is placed in a mold 12 with many steps as shown in Fig. 2(B), and then tightened as shown in Fig. 2(C). After that, resin was injected to impregnate the foamed nonwoven fabric 11 with the resin. This resin injection is RTM
(Resin transfer molding).
（発明が解決しようとする課題）
上記の工程により成形された製品は成形型１２の段部か
多いために、型を締め上げたときに発泡不織布（心材）
１１の周辺が中心方向に引っ張られるため、樹脂を注入
後の製品の周辺部には発泡不織布１１がない箇所が存在
してしまい、強度的に問題か発生していた。(Problem to be Solved by the Invention) The product molded by the above process has many stepped parts in the mold 12, so when the mold is tightened, the foamed nonwoven fabric (core material)
Since the periphery of the foamed nonwoven fabric 11 is pulled toward the center, there are areas where the foamed nonwoven fabric 11 is not present at the periphery of the product after the resin has been injected, causing problems in terms of strength.
さらに、発泡不織布１１を成形型１２にセットするのに
も時間がかかり、ＲＴＭのサイクルタイムも長くなって
いた。Furthermore, it took time to set the foamed nonwoven fabric 11 in the mold 12, and the RTM cycle time also became long.
本発明は上記の点に鑑みてなされたもので、その目的は
ＲＴＭにより成形される強化プラスチック製品の強度を
均一とし、しかもＲＴＭのサイクルタイムも短くするこ
とかできる樹脂成形方法を提供することにある。The present invention has been made in view of the above points, and its purpose is to provide a resin molding method that can make the strength of reinforced plastic products molded by RTM uniform and shorten the RTM cycle time. be.
［発明の構成コ
（課題を解決するための手段）
本発明の課題は熱可塑性を有する芯材を第１の金型で熱
圧搾して予め芯材の型を作る第１の工程と、この第１の
工程で作られた芯材の不要部分を裁断する第２の工程と
、この第２の工程で作られた芯材を樹脂を注入する上記
第１の金型と同一の形状を有する第２の金型に入れて芯
材に樹脂を含侵させる第３の工程とからなる樹脂成形方
法により解決される。[Structure of the Invention (Means for Solving the Problem) The problem of the present invention is to provide a first step of preparing a core material mold in advance by hot-pressing a thermoplastic core material with a first mold; A second step of cutting unnecessary parts of the core material made in the first step, and a mold having the same shape as the first mold in which resin is injected into the core material made in the second step. The problem is solved by a resin molding method that includes a third step of impregnating the core material with resin by placing it in a second mold.
（作用）
樹脂を含侵させる工程の前に予め、心材を金型の形状に
合わせて裁断しておくようした。(Function) Before the process of impregnating with resin, the core material was cut in advance to match the shape of the mold.
（実施例）
以下図面を参照して本発明の一実施例に係わる樹脂成形
方法について説明する。第１図（Ａ）において、２１は
芯材として用いられる発泡不織布である。この発泡不縁
布２１はポリエステル繊維２２及び球状微粒子（マイク
ロバルーン）２３により構成される。上記発泡不織布２
１の両面は熱可塑性を有する強化材としてのガラス繊維
マット２４で挟まれている。(Example) A resin molding method according to an example of the present invention will be described below with reference to the drawings. In FIG. 1(A), 21 is a foamed nonwoven fabric used as a core material. This foamed non-woven fabric 21 is composed of polyester fibers 22 and spherical fine particles (microballoons) 23. The above foamed nonwoven fabric 2
1 is sandwiched between glass fiber mats 24 as reinforcing materials having thermoplastic properties.
そして、第１図（Ａ）に示すようにガラス繊維マット２
４で挟まれた発泡不織布２１をＲＴＭに使用する第２の
金型とほぼ同一の形状を有する第１の金型（図示しない
）で熱圧搾し同図（Ｂ）に示すように、第２の金型と段
部形状か同一形状を有する発泡不織布２１を予め成形す
る。Then, as shown in FIG. 1(A), the glass fiber mat 2
The foamed nonwoven fabric 21 sandwiched between the foamed nonwoven fabrics 21 and 4 is hot-pressed in a first mold (not shown) having almost the same shape as the second mold used for RTM, and as shown in FIG. A foamed nonwoven fabric 21 having a step shape or the same shape as the mold is pre-molded.
次に、同図（Ｃ）に示すように、第２の金型の外枠２５
に合うように上記発泡不織布２１を裁断する。Next, as shown in the same figure (C), the outer frame 25 of the second mold is
The foamed nonwoven fabric 21 is cut to fit.
この結果、ガラス繊維マット２４て挟まれた発泡不織布
２１は第２の金型と外枠も同一形状となる。As a result, the foamed nonwoven fabric 21 sandwiched between the glass fiber mats 24 has the same shape as the second mold and the outer frame.
そして、ガラス繊維マット２４て挟まれた発泡不織布２
１に第２の金型に入れ、ＲＴＭにより樹脂を注入する。Then, the foamed nonwoven fabric 2 sandwiched between the glass fiber mats 24
1 into a second mold, and resin is injected by RTM.
これにより、樹脂かガラス繊維マット２４及び発泡不織
布２１内に含侵し、強化プラスチック製品が成形される
。As a result, the resin impregnates the glass fiber mat 24 and the foamed nonwoven fabric 21, forming a reinforced plastic product.
このようにして成形された強化プラスチック製品内には
ガラス繊維マット２４及び発泡不織布２１が均一に存在
しているので、製品の強度を向上させることができる。Since the glass fiber mat 24 and the foamed nonwoven fabric 21 are uniformly present in the reinforced plastic product molded in this manner, the strength of the product can be improved.
さらに、第１図（Ａ）に示すようなガラス繊維マット２
４で挟まれた発泡不織布２１を帯状に構成しておき、同
図（Ｃ）の裁断を流れ作業で行うことにより、ＲＴＭで
の樹脂の注入のライフタイムを従来より短くすることが
できる。Furthermore, a glass fiber mat 2 as shown in FIG.
By configuring the foamed nonwoven fabric 21 sandwiched between the foamed nonwoven fabrics 4 and 4 into a band shape and performing the cutting shown in FIG.
なお、上記実施例ではガラス繊維マット２４を熱可塑性
を持たせたが、発泡不縁布２１そのものに熱可塑性を持
たせるようにしても良い。In the above embodiment, the glass fiber mat 24 is thermoplastic, but the non-foamed fabric 21 itself may be thermoplastic.
［発明の効果コ
以上詳述したように本発明によれば、ＲＴＭにより成形
される強化プラスチック製品の強度を均一とし、しかも
ＲＴＭのサイクルタイムも短くすることができる樹脂成
形方法を提供することができる。[Effects of the Invention] As detailed above, according to the present invention, it is possible to provide a resin molding method that can make the strength of reinforced plastic products molded by RTM uniform and shorten the cycle time of RTM. can.
第１図は本発明の一実施例に係わる樹脂成形方法を示す
図、第２図は従来の樹脂成形方法を示す図である。
２１・・・発泡不織布、２２・・・ポリエステル繊維、
２３−＝球状微粒子、２４・・・ガラス繊維マット。
出願人代理人 弁理士 鈴江 武彦
ＣＢ）
（Ｃ）
第１図
（Ａ）
（Ｂ）
（Ｃ）
第２図FIG. 1 is a diagram showing a resin molding method according to an embodiment of the present invention, and FIG. 2 is a diagram showing a conventional resin molding method. 21... Foamed nonwoven fabric, 22... Polyester fiber,
23-=spherical fine particles, 24...glass fiber mat. Applicant's agent Patent attorney Takehiko Suzue CB) (C) Figure 1 (A) (B) (C) Figure 2
Claims (1)
材の型を作る第１の工程と、この第１の工程で作られた
芯材の不要部分を裁断する第２の工程と、この第２の工
程で作られた芯材を樹脂を注入する上記第１の金型と同
一の形状を有する第２の金型に入れて芯材に樹脂を含侵
させる第３の工程とからなる樹脂成形方法。The first step is to heat-press a thermoplastic core material in a first mold to make a shape of the core material in advance, and the second step is to cut out unnecessary parts of the core material made in this first step. step, and a third step in which the core material made in this second step is placed in a second mold having the same shape as the first mold in which resin is injected, and the core material is impregnated with resin. A resin molding method consisting of steps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2333056A JPH04201242A (en) | 1990-11-29 | 1990-11-29 | Method for molding resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2333056A JPH04201242A (en) | 1990-11-29 | 1990-11-29 | Method for molding resin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04201242A true JPH04201242A (en) | 1992-07-22 |
Family
ID=18261777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2333056A Pending JPH04201242A (en) | 1990-11-29 | 1990-11-29 | Method for molding resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04201242A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004506549A (en) * | 2000-08-18 | 2004-03-04 | スキナー，リー，マーチン | Molding method |
-
1990
- 1990-11-29 JP JP2333056A patent/JPH04201242A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004506549A (en) * | 2000-08-18 | 2004-03-04 | スキナー，リー，マーチン | Molding method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5041260A (en) | Resin transfer molding method | |
| CA1279168C (en) | Perimeter resin feeding of composite structures | |
| CA1287716C (en) | Resin transfer molding core, preform and process | |
| US4891176A (en) | Resin transfer molding process | |
| EP0243617B1 (en) | Method for the manufacture of fiber reinforced structural composites | |
| US5520758A (en) | Bumper preform and method of forming same | |
| US3889035A (en) | Fiber-reinforced plastic articles | |
| CA1273465C (en) | Method of manufacturing molded articles | |
| CA2025834A1 (en) | Molded articles of fiber-reinforced plastic and preparation process of same | |
| US5902533A (en) | Method of compression - injection molding | |
| JPH04201242A (en) | Method for molding resin | |
| CA1321512C (en) | Method of making a storable handleable fibrous mat | |
| JPS6029613B2 (en) | Molding method for fiber-reinforced thermosetting resin | |
| JPS6121876A (en) | Method of manufacturing fiber reinforced resin hull | |
| GB2232373A (en) | Moulding a reinforced article | |
| JPH04201243A (en) | Preformable core material and resin molding method | |
| JPH0353097B2 (en) | ||
| JP2853205B2 (en) | Thermoplastic composite molding sheet | |
| JPH04103319A (en) | Hollow resin injection molding method | |
| JPS63251209A (en) | Preparation of composite molded item | |
| JPS5715938A (en) | Continuous manufacture of foamed article reinforced with fiber | |
| JPH0872074A (en) | Molding of chip urethane | |
| JPS645813A (en) | Manufacture of resin formed member | |
| JPH0276732A (en) | Glass reinforced plastic molded product and its manufacture | |
| JPS61121910A (en) | Manufacture of fiber reinforced resin molded product |