KR920007780A - 폴리프로필렌수지 성형법 - Google Patents

폴리프로필렌수지 성형법 Download PDF

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Publication number
KR920007780A
KR920007780A KR1019910017475A KR910017475A KR920007780A KR 920007780 A KR920007780 A KR 920007780A KR 1019910017475 A KR1019910017475 A KR 1019910017475A KR 910017475 A KR910017475 A KR 910017475A KR 920007780 A KR920007780 A KR 920007780A
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KR
South Korea
Prior art keywords
resin
resin melt
polypropylene resin
cavity clearance
polypropylene
Prior art date
Application number
KR1019910017475A
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English (en)
Other versions
KR0178538B1 (ko
Inventor
다까히사 하라
마사히또 마쓰모또
노부히로 우스이
시게요시 마뚜바라
Original Assignee
모리 히데오
스미또모 가가꾸고오교 가부시끼가이샤
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.)
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Application filed by 모리 히데오, 스미또모 가가꾸고오교 가부시끼가이샤 filed Critical 모리 히데오
Publication of KR920007780A publication Critical patent/KR920007780A/ko
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Publication of KR0178538B1 publication Critical patent/KR0178538B1/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
    • B29C44/10—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
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/20—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for porous or cellular articles, e.g. of foam plastics, coarse-pored

Landscapes

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

Abstract

내용 없음

Description

폴리프로필렌수지 성형법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명에 따른 성형단계에서 캐비티 클리어런스(t)의 변화를 나타내는 것이고,
제2도 및 제3도는 본 발명의 성형법에서 사용된 성형 기구의 단면도이다.

Claims (5)

  1. 맞물림부(5)에서 미끄러져 움직일 수 있고 캐비터 클리어런스(t)가 임의로 설정되는 한 쌍의 암수 금형(3,4)을 제공하고, 캐비터 클리어런스(t)가 1.0㎜이하일때 암수 금형중의 하나에 제공된 수지 용융 도관(7)을 통해서 화학 발표제를 함유한 폴리프로필렌수지 용융물을 공급하기 시작하고, 폴리프로필렌수지 용융물(8)의 공급과정중에, 암수 금형중, 하나 이상을 움직여서 캐비터 클리어런스를 증가시켜서 금형 캐비터 내 수지 용융물에 가해지는 압력을 5㎏/㎠로 조정하고, 수지 공급이 끝나자 마자 수지 용융물에 5㎏ 내지 100㎏/㎠의 압력을 가하여 소킨층을 형성하고, 캐비티 클리어런스(t)를 더 증가시켜서 발표한 코어층을 형성하고, 금형내의 발포 성형체를 냉각시키는 공정을 특징으로 하는 폴리프로필렌 수지 발포 성형체 제조방법.
  2. 제1항에 있어서, 캐비터 클리어런스(t)가 0.5㎜이하일때, 수지 용융물의 공급을 시작하는 방법.
  3. 제1항에 있어서, 프로필렌 수지가 폴리프로 필렌의 단독 중합체인 방법.
  4. 제1항에 있어서, 프로필렌 수지가 프로필렌과 적어도 하나 이상의 기타 단량체와의 공중합체인 방법
  5. 제1항의 방법에 따라 제조된 폴리프로 필렌 수지의 발포 성형체.
    ※ 참고사항 : 최초출원 내용에 의하여 공개되는 것임.
KR1019910017475A 1990-10-05 1991-10-05 폴리프로필렌수지 성형법 KR0178538B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP90-269203 1990-10-05
JP2269203A JPH0777739B2 (ja) 1990-10-05 1990-10-05 ポリプロピレン樹脂発泡成形体の成形方法

Publications (2)

Publication Number Publication Date
KR920007780A true KR920007780A (ko) 1992-05-27
KR0178538B1 KR0178538B1 (ko) 1999-05-15

Family

ID=17469111

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910017475A KR0178538B1 (ko) 1990-10-05 1991-10-05 폴리프로필렌수지 성형법

Country Status (7)

Country Link
US (2) US5252269A (ko)
EP (1) EP0481306B1 (ko)
JP (1) JPH0777739B2 (ko)
KR (1) KR0178538B1 (ko)
CA (1) CA2052835C (ko)
DE (1) DE69112979T2 (ko)
ES (1) ES2079543T3 (ko)

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Also Published As

Publication number Publication date
CA2052835A1 (en) 1992-04-06
CA2052835C (en) 1999-07-06
DE69112979T2 (de) 1996-04-11
ES2079543T3 (es) 1996-01-16
DE69112979D1 (de) 1995-10-19
JPH0777739B2 (ja) 1995-08-23
EP0481306B1 (en) 1995-09-13
EP0481306A1 (en) 1992-04-22
JPH04144721A (ja) 1992-05-19
US5252269A (en) 1993-10-12
US5304579A (en) 1994-04-19
KR0178538B1 (ko) 1999-05-15

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