KR920007773A - 발포층이 이타(裏打)된 표피재를 갖는 폴리프로필렌 수지 성형체의 제조방법 - Google Patents

발포층이 이타(裏打)된 표피재를 갖는 폴리프로필렌 수지 성형체의 제조방법 Download PDF

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Publication number
KR920007773A
KR920007773A KR1019910017892A KR910017892A KR920007773A KR 920007773 A KR920007773 A KR 920007773A KR 1019910017892 A KR1019910017892 A KR 1019910017892A KR 910017892 A KR910017892 A KR 910017892A KR 920007773 A KR920007773 A KR 920007773A
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South Korea
Prior art keywords
resin
molded article
pressure
polypropylene resin
foamed layer
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KR1019910017892A
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English (en)
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KR100195667B1 (ko
Inventor
다까히사 하라
마사히또 마쓰모또
노부히로 우스이
시게요시 마쓰바라
Original Assignee
모리 히데오
스미또모가가꾸 고오교 가부시끼가이샤
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Publication of KR920007773A publication Critical patent/KR920007773A/ko
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Publication of KR100195667B1 publication Critical patent/KR100195667B1/ko

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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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/04—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
    • B29C44/0415—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities by regulating the pressure of the material during or after filling of the mould, e.g. by local venting
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/10—Applying counter-pressure during expanding
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/14—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed part being a lining
    • B29C44/146—Shaping the lining before foaming
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/36—Feeding the material to be shaped
    • B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
    • B29C44/381—Spreading the foamable material in the mould by pressing the mould halves together

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Molding Of Porous Articles (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

내용 없음

Description

발포층이 이타(裏打)된 표피재를 갖는 폴리프로필렌 수지 성형체의 제조방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명에 따른 성형단계에서 캐비티 클리어런스(cavityclearance)의 변화를 도시한다.
제2∼3도는 본 발명 방법의 각 단계에서 상부 금형과 하부 금형의 짝의 단면도이다.

Claims (4)

  1. 폴리프로필렌 수지 심재 및 발포층이 이타된 표피재를 함유하는 다층 성형체의 제조 방법에 있어서, 맞물린 부분(6)에서 미끄러져 움직일 수 있고 캐비티 클리어런스(t)가 임의로 조정 가능한 상부 금형 및 하부 금형의 짝(1,2)을 준비하고, 발포층이 이타된 표피재(7)를 상기 상부 및 하부금형 사이에 놓고, 상기 캐비티 클리어런스(t)rk (C+15)㎜와 (C+15)㎜[C는 발포층이 이타된 상기 표피재의 두께이다.] 사이일 때 화학적 발포제를 함유하는 용융 폴리프로필렌 수지를 상기 상부 또는 하부금형에 장치된 수지용융물 투입관을 통해 공급하고, 상기상부금형(1)을 10㎜/sec∼100㎜/sec의 속도로 하강시켜 상기 수지 용융물을 5㎏/㎠∼100㎏/㎠의 압력으로 압축하여 캐비티 말단을 상기 수지 용융물을 채워 상기 수지의 심재의 성형을 완결시키고, 상기 심재를 성형 완료후 1∼30초 동안 압축하여 표피층을 형성시킨 다음, 상기 상부 금형(1)을 들어올려 발포층이 이타된 상기 표피재의 압축 압력을 상기 폴리프로필렌 수지의 발포압력보다 낮은 압력으로 감소시켜 발포된 심재를 형성 및 고체화하고, 다시 상기 상부 금형(1)을 하강시켜 성형품 상에 1㎏/㎠∼20㎏/㎠의 압력을 가하고 상기 성형품을 상기 금형에서 냉각시키는 단계들을 포함하는 것을 특징으로 하는 방법.
  2. 제1항에 있어서, 상기 프로필렌 수지가 프로필렌의 단독 중합체인 방법.
  3. 제1항에 있어서, 상기 프로필렌 수지가 프로필렌과 적어도 하나의 여타 단량체와의 공중합체인 방법.
  4. 제1항에 따르는 방법에 의해 제조된 성형체.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019910017892A 1990-10-12 1991-10-11 발포층이 이타된 표피재를 갖는 폴리프로필렌 수지성형체의 제조방법 KR100195667B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2274457A JP2503753B2 (ja) 1990-10-12 1990-10-12 登泡層が裏打ちされた表皮材を貼合したポリプロピレン樹脂成形体の成形方法
JP90-274457 1990-10-12

Publications (2)

Publication Number Publication Date
KR920007773A true KR920007773A (ko) 1992-05-27
KR100195667B1 KR100195667B1 (ko) 1999-06-15

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KR1019910017892A KR100195667B1 (ko) 1990-10-12 1991-10-11 발포층이 이타된 표피재를 갖는 폴리프로필렌 수지성형체의 제조방법

Country Status (8)

Country Link
US (1) US5281376A (ko)
EP (2) EP0480456B1 (ko)
JP (1) JP2503753B2 (ko)
KR (1) KR100195667B1 (ko)
CA (1) CA2053194C (ko)
DE (1) DE69121349T2 (ko)
ES (1) ES2093057T3 (ko)
TW (1) TW212156B (ko)

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Also Published As

Publication number Publication date
ES2093057T3 (es) 1996-12-16
CA2053194C (en) 2002-02-19
JPH04148907A (ja) 1992-05-21
EP0729818A3 (en) 1996-11-20
EP0480456B1 (en) 1996-08-14
US5281376A (en) 1994-01-25
TW212156B (ko) 1993-09-01
DE69121349D1 (de) 1996-09-19
JP2503753B2 (ja) 1996-06-05
CA2053194A1 (en) 1992-04-13
EP0729818A2 (en) 1996-09-04
EP0480456A1 (en) 1992-04-15
DE69121349T2 (de) 1997-03-20
KR100195667B1 (ko) 1999-06-15

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