JPH0422619A - Manufacture of resin molding - Google Patents
Manufacture of resin moldingInfo
- Publication number
- JPH0422619A JPH0422619A JP2129689A JP12968990A JPH0422619A JP H0422619 A JPH0422619 A JP H0422619A JP 2129689 A JP2129689 A JP 2129689A JP 12968990 A JP12968990 A JP 12968990A JP H0422619 A JPH0422619 A JP H0422619A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- mold
- reinforcing
- reinforcing materials
- films
- 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 71
- 229920005989 resin Polymers 0.000 title claims abstract description 71
- 238000004519 manufacturing process Methods 0.000 title claims description 15
- 238000000465 moulding Methods 0.000 title description 5
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 18
- 239000011230 binding agent Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 10
- 239000012779 reinforcing material Substances 0.000 abstract description 47
- 238000002347 injection Methods 0.000 abstract description 15
- 239000007924 injection Substances 0.000 abstract description 15
- 239000000835 fiber Substances 0.000 abstract description 4
- 239000000047 product Substances 0.000 description 29
- 239000007789 gas Substances 0.000 description 10
- 238000005452 bending Methods 0.000 description 4
- 238000007664 blowing Methods 0.000 description 4
- 239000003365 glass fiber Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011151 fibre-reinforced plastic Substances 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、ガラス繊維等の補強材で強化された樹脂成形
品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 method for producing a resin molded product reinforced with a reinforcing material such as glass fiber.
ガラス繊維等の補強材で強化された繊維強化プラスチッ
クは、自動車の車体部品として、例えば、車体後部の荷
台を覆うリヤポデーのサイドパネル等への適用も図られ
ている。そのような成形品の製造方法の一例について、
本発明の説明図である第１図（ａ） （ｂ）、及び第２
図を参照して説明すると、例えば第２図に示すように、
段違いの二手面２・３が傾斜面４を介して相互に連なる
形状の樹脂成形品１を作製する場合、第１図（ａ）に示
すようなロービングクロスマット等から成る補強材９を
、第１図［有］）に示すように、上記樹脂成形品１の形
状と同等の空間形状のキャビティ７を有する成形型内に
所定枚数重ねてセットし、そして、従来は、この状態で
キャビティ７内に樹脂を注入する。このような製造法に
よって、第４図に示すような樹脂成形品１゛が作製され
ている。しかしながら、この従来法によれば、角部にお
いてキャビティの内壁面と補強材９゛との間に隙間を生
じた状態で樹脂の注入が行われる結果、第４図において
Ｂ・・・で示す各コーナ領域に、補強材９゛の介在しな
いレジンリッチの部位を有する樹脂成形品１゛となって
しまう。このように、表層部に強度の低いレジンリッチ
の部位が存在すると、この部位にクランク等が生じ易く
、このため、全体的な強度も低下する。BACKGROUND ART Fiber-reinforced plastics reinforced with reinforcing materials such as glass fibers are also being used as car body parts, such as side panels of rear pods that cover cargo beds at the rear of the car body. Regarding an example of a method for manufacturing such a molded product,
FIGS. 1(a) and 2(b), which are explanatory views of the present invention, and FIG.
To explain with reference to figures, for example, as shown in Fig. 2,
When producing a resin molded product 1 in which the two stepped surfaces 2 and 3 are connected to each other via the inclined surface 4, a reinforcing material 9 made of a roving cloth mat or the like as shown in FIG. As shown in Figure 1 [ex.], a predetermined number of sheets are stacked and set in a mold having a cavity 7 with a space shape equivalent to that of the resin molded article 1, and conventionally, in this state, the resin molded article 1 is placed inside the cavity 7. Inject the resin into. By such a manufacturing method, a resin molded article 1'' as shown in FIG. 4 is manufactured. However, according to this conventional method, the resin is injected with a gap created between the inner wall surface of the cavity and the reinforcing material 9 at the corner, and as a result, each of the parts indicated by B in FIG. This results in a resin molded product 1' having a resin-rich portion in the corner region where no reinforcing material 9' is present. As described above, if a resin-rich region with low strength exists in the surface layer portion, cranks and the like are likely to occur in this region, and the overall strength also decreases.
そこで、キャビティ内壁面の角部に沿っても補強材が存
在するように賦形性を高めた製法として、例えば、チョ
ツプドグラスファイバーのスプレーアップによるプリフ
ォームマットの成形法等が採用されており、また、例え
ば特開昭５８−５５２３２号公報には、上記のようなレ
ジンリッチを生じる箇所に、プリフォームマットとは別
に樹脂とフィラーとから成るパテ材を予め配設しておき
、その後、樹脂の注入を行う方法が開示されている。Therefore, as a manufacturing method that improves shapeability so that the reinforcing material is present even along the corners of the inner wall surface of the cavity, for example, a method of forming a preform mat by spraying up chopped glass fiber has been adopted. Also, for example, in Japanese Patent Application Laid-open No. 58-55232, a putty material made of resin and filler is placed in advance in the areas where resin richness as described above occurs, separately from the preform mat, and then, A method of performing resin injection is disclosed.
［発明が解決しようとする課題〕
しかしながら、角部における賦形性を高めるために、チ
ョツプドグラスファイバーのスプレーアップによるプリ
フォームマットの成形や、樹脂とフィラーとから成るパ
テ材を予め配設する方法等においては、従来のレジンリ
・ンチの部位にも補強材が介在する成形品となるものの
、その部位の補強材は短繊維であるために、強度を充分
には向上し得ないという問題を生している。[Problems to be Solved by the Invention] However, in order to improve the shapeability at the corners, it is necessary to mold a preform mat by spraying up chopped glass fibers or to place a putty material made of resin and filler in advance. In this method, although the molded product has a reinforcing material in the conventional resin-rich area, the reinforcing material in that area is short fibers, so the problem is that the strength cannot be sufficiently improved. alive.
本発明の樹脂成形品の製造方法は、上記課題を解決する
ために、少なくとも２枚のフィルム部材を間に挟んで相
互に積層された複数の補強用マットを成形型内にセット
し、次いで、上記フィルム部材間のガス圧を高める処理
を施すことによって補強用マットを成形型の壁面に押圧
した状態で補強用マット中のバインダを硬化させ、その
後、成形型内に樹脂材料を注入することを特徴としてい
る。In order to solve the above problems, the method for manufacturing a resin molded product of the present invention sets a plurality of reinforcing mats stacked on each other with at least two film members in between, and then sets the reinforcing mats in a mold. The binder in the reinforcing mat is cured while the reinforcing mat is pressed against the wall of the mold by increasing the gas pressure between the film members, and then the resin material is injected into the mold. It is a feature.
〔作 用］
上記の製造方法によれば、成形型内にセットされた積層
状態の補強用７７）は、これら補強用マット間でフィル
ム部材間のガス圧が高められることで、成形型の壁面に
沿って密着した状態となされ、この状態で樹脂の注入が
行われる。この結果、成形品の表面側は、そのほぼ全面
にわたって補強用マットが介在する状態で作製される。[Function] According to the above manufacturing method, the reinforcing material 77) in a laminated state set in the mold is heated by increasing the gas pressure between the film members between these reinforcing mats, so that the reinforcing material 77) is formed on the wall surface of the mold. The resin is injected in this state. As a result, the molded product is manufactured with the reinforcing mat interposed over almost the entire surface thereof.
このため、局部的なレジンリッチ部位や短繊維補強材の
介在による低強度部位は生じず、はぼ均質な成形体が得
られる結果、強度が向上する。Therefore, local resin-rich areas and low-strength areas due to the presence of the short fiber reinforcing material do not occur, and as a result, a more or less homogeneous molded product is obtained, resulting in improved strength.
なお、フィルム部材間のガス圧を高めることは、これら
フィルム部材間に加圧ガスを吹き込む処理や、或いは、
予めフィルム部材間にガスを封入しておき、このガス塩
を成形型内で上昇させて熱膨張による圧力上昇を生じさ
せる処理等によって行うことができる。Note that increasing the gas pressure between the film members can be achieved by blowing pressurized gas between these film members, or by
This can be carried out by a process in which gas is sealed between the film members in advance, and the gas salt is raised in the mold to generate a pressure increase due to thermal expansion.
本発明の一実施例を第１図ないし第３図に基づいて説明
すれば、以下の通りである。An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.
第２図のように、本発明を適用して作製される樹脂成形
品１として、段違いの二平面２・３が傾斜面４を介して
相互に連なる形状を例に挙げて、その製造手順について
説明する。なお、上記樹脂成形品１の外形寸法を例示す
れば、幅Ｗは５００閣、図において上段側の平面２の長
さＬｌは３００園、下段側の平面３の長さＬ２は４００
ｍｍ、傾斜面４の高さＨは１０ｍｍ、厚さ℃は３鴫であ
る。As shown in FIG. 2, a resin molded product 1 manufactured by applying the present invention has a shape in which two flat surfaces 2 and 3 at different levels are connected to each other via an inclined surface 4, and the manufacturing procedure thereof will be explained. explain. In addition, to give an example of the external dimensions of the resin molded product 1, the width W is 500 mm, the length Ll of the upper plane 2 in the figure is 300 mm, and the length L2 of the lower plane 3 is 400 mm.
mm, the height H of the inclined surface 4 is 10 mm, and the thickness C is 3 mm.
この場合、第１図（ｂ）のように、上型５と下型６とか
ら成る成形型が設けられ、この成形型には、上型５と下
型６との合わせ面に沿って上記の樹脂成形品Ｉとほぼ同
等の空間形状をなすキャビティ７が形成されている。ま
た、この成形型には、第２図の樹脂成形品１において、
上段平面２上の端部寄りの位置に対応する箇所にレジン
注入孔８が形成されている。In this case, as shown in FIG. 1(b), a mold consisting of an upper mold 5 and a lower mold 6 is provided. A cavity 7 is formed which has a spatial shape almost the same as that of the resin molded product I. Moreover, in this mold, in the resin molded product 1 shown in FIG.
A resin injection hole 8 is formed at a position on the upper plane 2 corresponding to a position near the end.
まず、上記の成形型の下型６におけるキャビティ７内に
、第１図（ａ）に示すようなマット状の補強材９が複数
積層状態で配設される。これらの補強材９・・・は、例
えば、熱可塑性ポリエステルから成るバインダーが含浸
されたロービングクロスマ・７ト（セントラルガラス株
製ＥＲＷ−３２０−５５４Ａ）４プライと、Ｃ３Ｍ （
コンティニュアスストランドマット）２プライとから成
り、１５０°Ｃ〜２００°Ｃに予備加熱することによっ
て、上記バインダーの可塑化処理が行われている。そし
て、上記の補強材９・・・には、第１図（ｂ）のように
、上層側と下層側とを二分する位置に、二枚のフィルム
１０ａ−１０ｂが介装されている。なお、これらフィル
ム１０ａ−１０ｂとしては、例えば厚さ０．１ｍｍで下
記の物性値を有するポリ塩化ビニルフィルムが使用され
る。First, a plurality of mat-like reinforcing materials 9 as shown in FIG. 1(a) are placed in a stacked state in the cavity 7 of the lower mold 6 of the mold. These reinforcing materials 9 are, for example, 4 plies of roving cross mat 7 (ERW-320-554A manufactured by Central Glass Co., Ltd.) impregnated with a binder made of thermoplastic polyester, and C3M (
The binder is plasticized by preheating to 150°C to 200°C. As shown in FIG. 1(b), two films 10a-10b are interposed in the reinforcing material 9 at a position dividing the upper layer side and the lower layer side into two. In addition, as these films 10a-10b, for example, a polyvinyl chloride film having a thickness of 0.1 mm and the following physical properties is used.
上記のように補強材９・・・がセットされると、上型５
を下降して型締めが行われ、これにより、第１図［有］
）のように、上記補強材９・・・は成形型のキャビティ
７の形状にほぼ沿う形状に変形する。そして、この型締
め状態で、さらに、前記二枚のフィルム１０ａ ・１
０ｂ間に、エアーの吹き込みが行われる。このために、
第１図（Ｃ）に示すように、成形型の一部には、キャビ
ティ７内にセットされた補強材９・・・の端面を局部的
に外部に露出させる切欠き部１１が形成されると共に、
この切欠き部１１内への進退自在なエアー注入ノズル１
２が設けられている。このエアー注入ノズル１２を前進
位置に位置させて、切欠き部ｌｌ内に露出している補強
材９・・・の端面に当接させ、そして、二枚のフィルム
１０ａ ４０ｂ間に、例えば５ ｋｇ ／ ｃｆｆｌ
の加圧エアーの吹き込みが行われる。なお、このとき、
二枚のフィルム１０ａ ・１０ｂの周縁は、上記エア
ー注入ノズル１２の当接部位を除いて相互に接着され、
封止状態となされている。When the reinforcing material 9... is set as described above, the upper mold 5
The mold is clamped by lowering the
), the reinforcing material 9... deforms into a shape that approximately follows the shape of the cavity 7 of the mold. Then, in this mold-clamped state, the two films 10a and 1
Air is blown during 0b. For this,
As shown in FIG. 1(C), a notch 11 is formed in a part of the mold to locally expose the end face of the reinforcing material 9 set in the cavity 7 to the outside. With,
Air injection nozzle 1 that can freely move forward and backward into this notch 11
2 is provided. The air injection nozzle 12 is placed in the forward position and brought into contact with the end face of the reinforcing material 9 exposed in the notch 11, and then, for example, 5 kg is placed between the two films 10a and 40b. / cffl
Pressurized air is blown. Furthermore, at this time,
The peripheral edges of the two films 10a and 10b are adhered to each other except for the area where the air injection nozzle 12 contacts,
It is in a sealed state.
上記のように加圧エアーの吹き込みが行われる結果、上
側のフィルム１０ａよりも上部の補強材９・・・（以下
、上層側補強材９ａという）は上型５の内壁面に、下側
のフィルム１０ｂよりも下部の補強材９・・・（以下、
下層側補強材９ｂという）は下型６の内壁面に、各フィ
ルム１０ａ ・１０ｂを介してエアー圧によりそれぞ
れ押付けられる。これにより、上層側補強材９ａと下層
側補強材９ｂとは、上型５と下型６との各内壁面に沿っ
てそれぞれ密着した状態に押付けられる。また、両フィ
ルム１０ａ・１０ｂは相互に離間して、両者間には空間
領域が形成される。そして、このようにエアー圧による
補強材９・・・の成形を行った状態で、補強材９・・・
中のバインダーの硬化温度まで温度を低下させることで
、上記のように補強材９・・・が上型５と下型６との各
内壁面に沿ってそれぞれ密着した成形形状に保持される
。As a result of blowing the pressurized air as described above, the reinforcing material 9 above the upper film 10a (hereinafter referred to as the upper reinforcing material 9a) is attached to the inner wall surface of the upper die 5, and the reinforcing material 9 above the upper film 10a is The reinforcing material 9 below the film 10b (hereinafter referred to as
The lower reinforcing material 9b) is pressed against the inner wall surface of the lower mold 6 by air pressure through the films 10a and 10b. As a result, the upper reinforcing material 9a and the lower reinforcing material 9b are pressed into close contact with each other along the inner wall surfaces of the upper mold 5 and the lower mold 6, respectively. Moreover, both films 10a and 10b are spaced apart from each other, and a space region is formed between them. Then, with the reinforcing material 9... formed by air pressure in this way, the reinforcing material 9...
By lowering the temperature to the curing temperature of the binder inside, the reinforcing materials 9 are held in a molded shape in close contact with each other along the inner wall surfaces of the upper mold 5 and the lower mold 6, as described above.
このように、上記では、型締め時にキャビティ７に沿っ
て変形した補強材９・・・に対し、さらに、エアー圧に
よって、補強材９・・・のキャビティ７の形状に沿う賦
形性の向上を図る処理（以下、エアー圧によるプリフォ
ーム成形という）が行われる、このようなプリフォーム
成形を行った後、エアー注入ノズル１２からのエアー圧
の供給が停止されると共に、エアー注入ノズル１２を後
退させて、両フィルム１０ａ ・１０ｂ＠面のエアー
注入口を大気解放することで、キャビティ７内の圧力は
常圧に復帰する。次いで、第１図（ｄ）のように、成形
型の切欠き部１１にスペーサ１３・１３が装着され、こ
の切欠き部ｌｌ側が封止される。そして、前記したレジ
ン注入孔８を通して、二成分系硬化形の樹脂、
例えば下記の成分及び配合比の樹脂材料の注入が行われ
る。In this way, in the above, the shapeability of the reinforcing material 9 along the shape of the cavity 7 is further improved by air pressure for the reinforcing material 9 deformed along the cavity 7 during mold clamping. After performing such preform molding, in which a process for achieving the The pressure inside the cavity 7 returns to normal pressure by retracting the films 10a and 10b and opening the air inlets on the surfaces of both films 10a and 10b to the atmosphere. Next, as shown in FIG. 1(d), spacers 13 are attached to the notch 11 of the mold, and the notch 11 side is sealed. Then, a two-component curing resin, for example, a resin material having the following components and compounding ratio, is injected through the resin injection hole 8 described above.
また、
このときの注入条件と金型条件との一例を示せば次の通
りである。Further, an example of the injection conditions and mold conditions at this time is as follows.
上記のような樹脂の注入時には、前記したように両フィ
ルム１０ａ ・１０ｂ間に空間部が形成され、これが
樹脂の流れる流路（以下、この空間部を樹脂流路空間１
４という）として機能する。また、両フィルム１０ａ
・１０ｂは、上記注入樹脂の反応熱で溶失する。した
がって、レジン注入孔８から注入される樹脂は、その直
下に位置する上層側補強材９ａを通して上記の樹脂流路
空間１４内に流入し、そして、この樹脂流路空間１４内
を満たすように、この樹脂流路空間１４内を流動した後
、この樹脂流路空間１４から、上層側補強材９ａ及び下
層側補強材９ｂ内へと浸透してキャビテイ７内全体に満
たされる。When injecting the resin as described above, a space is formed between both films 10a and 10b as described above, and this is a channel through which the resin flows (hereinafter, this space will be referred to as a resin channel space 1).
4). Also, both films 10a
-10b melts and disappears due to the reaction heat of the injected resin. Therefore, the resin injected from the resin injection hole 8 flows into the resin flow path space 14 through the upper reinforcing member 9a located directly below it, and fills the resin flow path space 14. After flowing through the resin flow path space 14, the resin permeates from the resin flow path space 14 into the upper reinforcing material 9a and the lower reinforcing material 9b, filling the entire cavity 7.
その後、樹脂が硬化した後に型開きを行って成形品の取
出しが行われ、前記した第２図の形状の樹脂成形品１が
得られる。Thereafter, after the resin has hardened, the mold is opened and the molded product is taken out, thereby obtaining the resin molded product 1 having the shape shown in FIG. 2 described above.
次頁の第１表には、上記のようにエアー圧によるプリフ
ォーム成形を行って得られる本実施例の製造方法と、型
締め後、第１図（ｂ）に示す状態のまま樹脂の注入を行
う従来の製造方法とによってそれぞれ得られた成形品に
対する曲げ強度試験結果、及び、樹脂流動性試験結果の
一例を示している。Table 1 on the next page shows the manufacturing method of this example obtained by molding a preform using air pressure as described above, and the injection of resin in the state shown in Figure 1 (b) after clamping the mold. Examples of bending strength test results and resin fluidity test results for molded products obtained by conventional manufacturing methods are shown.
第１表
なお、第３図は、曲げ強度試験方法を示す模式図であっ
て、樹脂成形品がら幅２５■（厚さ３−）のテストピー
ス１５を作製し、このテストピース１５の傾斜面４゛を
中心にして支点間隔ｆ＝５０−で二点支持する。そして
、傾斜面４”と下段平面３”との間の角部を上方がら押
圧する試験によって、曲げ強度を求めている。本実施例
の製造方法による成形品は従来よりも１８％程度、強度
が向上している。また、樹脂流動性試験結果は、第２図
に示す形状の樹脂成形品１における樹脂の未充填面積を
それぞれ求めた結果である。従来の製造方法における成
形品では、例えば同図においてレジン注入孔８より離れ
たＡ部の末端箇所付近に、４７ｃＪの未充填部分が生じ
ているが、本実施例による成形品では未充填部分は存在
していない。Table 1 Note that FIG. 3 is a schematic diagram showing the bending strength test method, in which a test piece 15 with a width of 25 cm (thickness 3-) is prepared from a resin molded product, and the inclined surface of this test piece 15 is It is supported at two points with a fulcrum spacing f=50- with 4' as the center. Then, the bending strength was determined by a test in which the corner between the inclined surface 4'' and the lower plane 3'' was pressed from above. The strength of the molded product manufactured by the manufacturing method of this example is approximately 18% higher than that of the conventional molded product. Moreover, the resin fluidity test results are the results of determining the unfilled area of the resin in the resin molded product 1 having the shape shown in FIG. 2, respectively. In the molded product produced by the conventional manufacturing method, for example, in the figure, an unfilled portion of 47 cJ occurs near the end of part A away from the resin injection hole 8, but in the molded product according to this example, the unfilled portion is Doesn't exist.
以上のように、上記実施例によれば、成形型内にセット
された補強材９・・・に対して、この補強材９・・・を
成形型のキャビティ７の内壁面形状に沿わせる成形がエ
アー圧を利用して行われる。このため、例えばキャビテ
ィ７における二手面部と傾斜部との間の角部に沿って隙
間なく密着した状態に補強材９・・・は押圧成形される
。したがって、従来の製造法で生じていた角部周辺のレ
ジンリッチ部等の局部的な不均一部分が成形品の表層部
に発生することはなく、全面にわたって均一な成形品が
得られるので、強度が向上する。As described above, according to the above embodiment, the reinforcing material 9 set in the mold is molded so that the reinforcing material 9 follows the shape of the inner wall surface of the cavity 7 of the mold. is performed using air pressure. For this reason, the reinforcing materials 9 are press-molded, for example, along the corner between the two-armed portion and the inclined portion of the cavity 7 so as to be in close contact with each other without any gaps. Therefore, local uneven areas such as resin-rich areas around corners that occur in conventional manufacturing methods do not occur on the surface layer of the molded product, and a molded product that is uniform over the entire surface is obtained, which increases the strength. will improve.
また、従来は、レジン注入孔から離れた末端部へは、補
強材中を樹脂が浸透していくことにより行われ、このた
め、大きな流動抵抗を生じることから、前記樹脂流動性
試験結果のように未充填領域が残るものとなっていたが
、上を己実施例では、流動抵抗の小さな樹脂流路空間１
４を通して注入樹脂はキャビティ７内の末端部まで容易
に流動し、そして、補強材９・・・中への含浸を生しる
ため、未充填領域が生じることはなく、さらに、補強材
９・・・中への含浸性が向上する。こうして、樹脂成形
品１全体にわたって樹脂の充填率が向上し、また、均一
性が向上することがらも、強度の向上を図ることができ
る。In addition, conventionally, resin penetrates into the reinforcing material to the end part away from the resin injection hole, which causes a large flow resistance, so as shown in the resin fluidity test results mentioned above. However, in this example, the resin flow path space 1 with low flow resistance was
4, the injected resin easily flows to the end in the cavity 7 and causes impregnation into the reinforcing material 9, so that no unfilled areas occur, and furthermore, the reinforcing material 9... ...Improves the impregnability into the inside. In this way, the filling rate of the resin is improved over the entire resin molded product 1, and the uniformity is also improved, so that the strength can be improved.
なお、上記実施例においては、フィルム１０ａ１０ｂ間
に加圧エアーを吹き込むことによって、両フィルム１０
ａ ・１０ｂ間のガス圧を高める例を挙げたが、例え
ば、両フィルム間に不活性ガス等のその他のガスを封入
し、高温の成形型内における熱膨張による圧力上昇を利
用して、補強材を成形型の内壁面に押付けるようにする
こと等も可能である。In the above embodiment, by blowing pressurized air between the films 10a10b, both films 10a and 10b are
We have given an example of increasing the gas pressure between a and 10b, but for example, reinforcement can be achieved by sealing other gas such as inert gas between both films and utilizing the pressure increase due to thermal expansion in the high-temperature mold. It is also possible to press the material against the inner wall surface of the mold.
本発明の樹脂成形品の製造方法は、以上のように、少な
くとも２枚のフィルム部材を間に挟んで相互に積層され
た複数の補強用マットを成形型内にセットし、次いで、
上記フィルム部材間のガス圧を高める処理を施すことに
よって補強用マットを成形型の壁面に押圧した状態で補
強用マット中のバインダを硬化させ、その後、成形型内
に樹脂材料を注入するものである。As described above, in the method for manufacturing a resin molded product of the present invention, a plurality of reinforcing mats stacked on each other with at least two film members sandwiched therebetween are set in a mold, and then,
The binder in the reinforcing mat is cured while the reinforcing mat is pressed against the wall of the mold by increasing the gas pressure between the film members, and then the resin material is injected into the mold. be.
これにより、成形型内にセットされた積層状態の補強用
マットは、ガス圧によって成形型の壁面に沿う形状に押
圧成形され、この形状で樹脂の注入が行われるので、成
形体の表面側は、そのほぼ全面にわたって補強用マット
が介在する状態で作製される。このため、局部的なレジ
ンリッチ部位や短繊維の介在による低強度部位等が生じ
ず、はぼ均質な成形体が得られるので、強度の向上を図
ることができるという効果を奏する。As a result, the laminated reinforcing mat set in the mold is press-molded by gas pressure into a shape that follows the wall of the mold, and resin is injected in this shape, so that the surface side of the molded object is , with a reinforcing mat interposed over almost the entire surface. Therefore, localized resin-rich areas and low-strength areas due to the presence of short fibers do not occur, and a substantially homogeneous molded article can be obtained, resulting in an effect that the strength can be improved.
第１図及び第２図は本発明の一実施例を示すものである
。
第１図（ａ）は−枚の補強材の斜視図である。
第１図（ｂ）は成形型への補強材のセット状態を示す断
面図である。
第１図（Ｃ）は上記成形型内にセットされている補強材
に対する加圧エアーの吹き込みによるプリフォーム成形
工程を示す断面図である。
第１図（イ）は上記プリフォーム成形後の樹脂注入工程
を示す断面図である。
第２図は樹脂成形品の斜視図である。
第３図は上記樹脂成形品に対する曲げ強度試験方法を示
す模式図である。
第４図は従来例を示すものであって、樹脂成形品の断面
図である。
１は樹脂成形品、５は上型、６は下型、７はキャビティ
、９は補強材、１０ａ ・１０ｂはフィルム、１２は
エアー注入ノズルである。1 and 2 show one embodiment of the present invention. FIG. 1(a) is a perspective view of two reinforcing members. FIG. 1(b) is a cross-sectional view showing the reinforcing material set in the mold. FIG. 1(C) is a sectional view showing a preform molding process by blowing pressurized air into the reinforcing material set in the mold. FIG. 1(A) is a sectional view showing the resin injection step after the preform molding. FIG. 2 is a perspective view of the resin molded product. FIG. 3 is a schematic diagram showing a bending strength test method for the resin molded product. FIG. 4 shows a conventional example, and is a sectional view of a resin molded product. 1 is a resin molded product, 5 is an upper mold, 6 is a lower mold, 7 is a cavity, 9 is a reinforcing material, 10a and 10b are films, and 12 is an air injection nozzle.
Claims (1)
積層された複数の補強用マットを成形型内にセットし、
次いで、上記フィルム部材間のガス圧を高める処理を施
すことによって補強用マットを成形型の壁面に押圧した
状態で補強用マット中のバインダを硬化させ、その後、
成形型内に樹脂材料を注入することを特徴とする樹脂成
形品の製造方法。1. Set a plurality of reinforcing mats stacked on each other with at least two film members in between, in a mold,
Next, the binder in the reinforcing mat is cured while the reinforcing mat is pressed against the wall surface of the mold by performing a treatment to increase the gas pressure between the film members, and then,
A method for manufacturing a resin molded product, which comprises injecting a resin material into a mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2129689A JPH0422619A (en) | 1990-05-18 | 1990-05-18 | Manufacture of resin molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2129689A JPH0422619A (en) | 1990-05-18 | 1990-05-18 | Manufacture of resin molding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0422619A true JPH0422619A (en) | 1992-01-27 |
Family
ID=15015756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2129689A Pending JPH0422619A (en) | 1990-05-18 | 1990-05-18 | Manufacture of resin molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0422619A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0631161A (en) * | 1992-05-26 | 1994-02-08 | Kisoo Kagaku Kogyo Kk | Deodorant |
| JP2009041659A (en) * | 2007-08-08 | 2009-02-26 | Hitachi Constr Mach Co Ltd | Bearing device |
-
1990
- 1990-05-18 JP JP2129689A patent/JPH0422619A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0631161A (en) * | 1992-05-26 | 1994-02-08 | Kisoo Kagaku Kogyo Kk | Deodorant |
| JP2009041659A (en) * | 2007-08-08 | 2009-02-26 | Hitachi Constr Mach Co Ltd | Bearing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2751768B2 (en) | Fiber-reinforced thermoplastic resin molded article and molding method thereof | |
| JP2007526150A (en) | Composite goods | |
| JPH10296737A (en) | Device for molding composite material | |
| JPH081698A (en) | Method and mold for producing fiber reinforced thermoplastic resin molding | |
| JP2012071595A (en) | Method of manufacturing composite molded object | |
| US20230373170A1 (en) | Preform shaping apparatus, preform shaping method and composite material molding method | |
| KR101684821B1 (en) | Manufacturing method for fibre-reinforced resin substrate or resin molded article, and plasticizing exhauster used in manufacturing method | |
| CN109843535B (en) | Method and apparatus for producing thermoplastic resin composite material | |
| JP5909062B2 (en) | Forming method | |
| JPH05185466A (en) | Fabricating method of composite resin | |
| US6406660B1 (en) | Method for producing polymer matrix composites having low volume percentage of reinforcement fiber and controlled thickness | |
| JPH0422619A (en) | Manufacture of resin molding | |
| JP5809484B2 (en) | Forming method | |
| JP2012106490A (en) | Method for manufacturing composite molding and device for manufacturing composite molding | |
| JP5362596B2 (en) | Paste composition method, pasting composite mold and pasting device | |
| JP3024870B2 (en) | Method for manufacturing resin molded products | |
| JPH0687155A (en) | Method for molding hollow structure by thermoforming synthetic resin plate | |
| WO2023132299A1 (en) | Frtp molded article production method, frtp molded article production device, resin molded article production method and resin molded article production device | |
| JP3223541B2 (en) | Preform fiberglass mat | |
| KR20200013378A (en) | Composite molded article forming apparatus and forming methode thereof | |
| JP3101166B2 (en) | In-mold coating molding method | |
| JP2023101383A (en) | Manufacturing method for fiber reinforced thermo-plastic (frtp) molded product, frtp molded product manufacturing device, manufacturing method for resin molded product, and resin molded product manufacturing device | |
| JP2822465B2 (en) | Method for producing fiber reinforced thermoplastic resin product | |
| JP3329059B2 (en) | Method for producing thermoplastic resin molded article | |
| JPH05269832A (en) | Mold for molding sheet and molding method |