JPS6025717A - Manufacture of resin molded item - Google Patents

Manufacture of resin molded item

Info

Publication number
JPS6025717A
JPS6025717A JP13536083A JP13536083A JPS6025717A JP S6025717 A JPS6025717 A JP S6025717A JP 13536083 A JP13536083 A JP 13536083A JP 13536083 A JP13536083 A JP 13536083A JP S6025717 A JPS6025717 A JP S6025717A
Authority
JP
Japan
Prior art keywords
resin composition
resin molded
molded item
uniform
under pressure
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
Application number
JP13536083A
Other languages
Japanese (ja)
Inventor
Yoshitaka Tagami
田上　義貴
Kazuhiko Muya
撫養　和彦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Resonac Corp
Original Assignee
Shin Kobe Electric Machinery Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shin Kobe Electric Machinery Co Ltd filed Critical Shin Kobe Electric Machinery Co Ltd
Priority to JP13536083A priority Critical patent/JPS6025717A/en
Publication of JPS6025717A publication Critical patent/JPS6025717A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
    • B29C70/46—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs
    • B29C70/48—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs and impregnating the reinforcements in the closed mould, e.g. resin transfer moulding [RTM], e.g. by vacuum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2061/00—Use of condensation polymers of aldehydes or ketones or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3055—Cars

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To obtain a high-strength and uniform resin molded item whose properties would be less scattered, by placing a sheetlike substrate in a mold cavity, closing the molds, and injecting under pressure a resin composition that has been heated and melted to be uniform. CONSTITUTION:One or more sheetlike substrates (e.g. glass cloths) are placed in a cavity 2 that is formed by molds 1, 1', the molds are closed, and a resin composition (e.g. phenolic resin composition or the like) that has been heated and melted to be uniform is injected under pressure via a sprue 4 by injection molding technique or the like to produce a resin molded item 5. USE:Constituting parts of automobiles, etc.

Description

【発明の詳細な説明】 本発明は、樹脂成形品の製造法に係り、高強度の成形品
を製造することを目的とする。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a resin molded article, and an object of the present invention is to manufacture a high-strength molded article.

従来、テープレコーダのシャーシ、プリント回路の基板
等に熱硬化性樹脂成形品が広く使用されている。そして
、近年、高強度および耐熱性が要求される自動車用機構
部品にも熱硬化性樹脂成形品が適用されるようになって
きた。しかし、従来広く使用されているガラス短繊維含
有あるいはアスベスト繊維含有熱硬化性樹脂等からなる
射出成形品では、機械的強度において特に耐衝撃特性が
低い欠点があった。一方、圧縮成形によるガラス長繊維
含有熱硬化性樹脂成形品があるが、■縮成形の欠点とし
て樹脂の溶融硬化が不均一なことがあり、成形品の機械
的強度のバラツキが大きくなり満足できるものではなか
った。Conventionally, thermosetting resin molded products have been widely used for tape recorder chassis, printed circuit boards, and the like. In recent years, thermosetting resin molded products have also come to be applied to mechanical parts for automobiles that require high strength and heat resistance. However, conventionally widely used injection molded products made of short glass fiber-containing or asbestos fiber-containing thermosetting resins have the drawback of low mechanical strength, particularly low impact resistance. On the other hand, there are long glass fiber-containing thermosetting resin molded products made by compression molding, but one of the disadvantages of compression molding is that the resin melts and hardens unevenly, resulting in large variations in the mechanical strength of the molded products. It wasn't something.

本発明は、金型キャビティ内にシート状基材を１枚乃至
数枚配置して金型を閉し、加熱溶融均一化した樹脂組成
物を加圧注入することにより、高強度で特性のバラツキ
の少ない成形品を得ることを目的とするものである。In the present invention, one or several sheet-like base materials are placed in the mold cavity, the mold is closed, and a homogenized resin composition is injected under pressure to achieve high strength and properties. The purpose is to obtain molded products with less .

本発明に用いる樹脂は、熱可塑性樹脂、熱硬化性樹脂の
いずれでもよいか、熱硬化性樹脂としては、フェノール
樹脂、エポキシｔｔ、を脂、不飽和ポリエステル、メラ
ミン樹脂、ジアリルフタレート樹脂などが適用でき、通
常、これにアスベスト繊維、ガラス繊維、タルク、シリ
カ、炭酸カルシウム、木粉、バルブなどの充填剤、硬化
剤、着色剤などを混合混練して組成物とする。The resin used in the present invention may be either a thermoplastic resin or a thermosetting resin. Examples of the thermosetting resin include phenol resin, epoxy TT, resin, unsaturated polyester, melamine resin, diallyl phthalate resin, etc. This is usually mixed and kneaded with asbestos fibers, glass fibers, talc, silica, calcium carbonate, wood flour, fillers such as bulbs, hardeners, colorants, etc. to form a composition.

シート状基材は、ガラス布、綿布等が適用でき。Glass cloth, cotton cloth, etc. can be used as the sheet-like base material.

これを金型キャビティ内になるべく固定される形状で配
置する。金型キャビティ内に加圧注入される樹脂組成物
は、予め加熱溶融均一化されるが、これには射出成形法
、トランスファ成形法等が適用される。This is placed in the mold cavity in a shape that is as fixed as possible. The resin composition injected into the mold cavity under pressure is heated and melted to make it uniform in advance, and injection molding, transfer molding, etc. are applied to this.

次に、本発明の詳細な説明する。Next, the present invention will be explained in detail.

実施例 第１図に示すように、金型１、】′て構成されるキャビ
ティ２内にガラス布３を２枚重ねて配置し、射出成形法
・によりスプルー４を通じて。Embodiment As shown in FIG. 1, two pieces of glass cloth 3 are placed one on top of the other in a cavity 2 consisting of a mold 1, and are passed through a sprue 4 by injection molding.

加熱溶融均一化したフェノール樹脂組成物を加圧注入し
加熱して第２図に示す成形品５を成形した。このような
成形品は、耐熱性、高強度が必要とされる自動車の機構
部品等に適用できる。A phenol resin composition which had been heated and melted to be homogenized was injected under pressure and heated to form a molded article 5 shown in FIG. Such molded products can be applied to mechanical parts of automobiles that require heat resistance and high strength.

上記成形品５の中央部を圧縮したときの破壊強度は、３
５０　Ｋ９であった。The breaking strength when the center part of the molded product 5 is compressed is 3
It was 50K9.

比較例 この成形品の圧縮破壊強度は２３５　Ｋｙであった。Comparative example The compressive fracture strength of this molded article was 235 Ky.

上述のように、本発明はキャビティ内にシート状基材を
配置して樹脂組成物を加圧注入し成形するので、このシ
ート状基材の存在によって成形品は極めて高強度となり
、しかも、予め加熱溶融し均一化した樹脂組成物を加圧
注入するので、強度のバラツキのない均一な成形品を得
られする点その工業的価値は極めて大なるものである。As mentioned above, in the present invention, a sheet-like base material is placed in a cavity and a resin composition is injected under pressure to form the molded product. Since a resin composition that has been heated and melted and homogenized is injected under pressure, a uniform molded product with no variation in strength can be obtained, which is of great industrial value.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明の一実施例を示す成形時の断面図、第２
図は同成形した成形品の断面図である。 ｊｌ　ビは金型、２はキャビティ、３はガラス布、４は
スプルー、５は成形品 特許出願人Fig. 1 is a sectional view showing one embodiment of the present invention during molding;
The figure is a sectional view of the same molded product. jl Bi is the mold, 2 is the cavity, 3 is the glass cloth, 4 is the sprue, 5 is the molded product patent applicant

Claims (1)

【特許請求の範囲】[Claims] 金型キャビティ内にシート状基材を１枚乃至数枚配置し
て金型を閉し、加熱溶融均一化した樹脂組成物を加圧注
入することを特徴とする樹脂成形品の製造法。1. A method for producing a resin molded article, which comprises arranging one or more sheet-like base materials in a mold cavity, closing the mold, and injecting a heat-melted and homogenized resin composition under pressure.
JP13536083A 1983-07-25 1983-07-25 Manufacture of resin molded item Pending JPS6025717A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13536083A JPS6025717A (en) 1983-07-25 1983-07-25 Manufacture of resin molded item

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13536083A JPS6025717A (en) 1983-07-25 1983-07-25 Manufacture of resin molded item

Publications (1)

Publication Number Publication Date
JPS6025717A true JPS6025717A (en) 1985-02-08

Family

ID=15149915

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13536083A Pending JPS6025717A (en) 1983-07-25 1983-07-25 Manufacture of resin molded item

Country Status (1)

Country Link
JP (1) JPS6025717A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0322042A2 (en) * 1987-12-21 1989-06-28 Shell Internationale Researchmaatschappij B.V. Process reducing of mould cycle time
WO1994012334A1 (en) * 1992-11-20 1994-06-09 Salflex Polymers Ltd. Composite molded objects and process

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53147765A (en) * 1977-05-31 1978-12-22 Asahi Glass Co Ltd Resin injection molding
JPS5438373A (en) * 1977-08-31 1979-03-22 Yamaha Motor Co Ltd Manufacture of fiber reinforced resin hull

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53147765A (en) * 1977-05-31 1978-12-22 Asahi Glass Co Ltd Resin injection molding
JPS5438373A (en) * 1977-08-31 1979-03-22 Yamaha Motor Co Ltd Manufacture of fiber reinforced resin hull

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0322042A2 (en) * 1987-12-21 1989-06-28 Shell Internationale Researchmaatschappij B.V. Process reducing of mould cycle time
WO1994012334A1 (en) * 1992-11-20 1994-06-09 Salflex Polymers Ltd. Composite molded objects and process

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