KR970069295A - 고밀도의 표층을 갖는 발포 성형물의 제조 방법 - Google Patents

고밀도의 표층을 갖는 발포 성형물의 제조 방법 Download PDF

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Publication number
KR970069295A
KR970069295A KR1019970015503A KR19970015503A KR970069295A KR 970069295 A KR970069295 A KR 970069295A KR 1019970015503 A KR1019970015503 A KR 1019970015503A KR 19970015503 A KR19970015503 A KR 19970015503A KR 970069295 A KR970069295 A KR 970069295A
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KR
South Korea
Prior art keywords
resin particles
mold
foamed resin
particles
surface layer
Prior art date
Application number
KR1019970015503A
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English (en)
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KR100463566B1 (ko
Inventor
유키하루 신도
Original Assignee
니시카와 마사아키
미쓰비시 케미칼 바스프 컴패니 리미티드
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 니시카와 마사아키, 미쓰비시 케미칼 바스프 컴패니 리미티드 filed Critical 니시카와 마사아키
Publication of KR970069295A publication Critical patent/KR970069295A/ko
Application granted granted Critical
Publication of KR100463566B1 publication Critical patent/KR100463566B1/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
    • B29C44/34—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
    • B29C44/44—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in solid form
    • B29C44/445—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in solid form in the form of expandable granules, particles or beads
    • 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
    • B29C44/3415—Heating or cooling
    • 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
    • B29C44/58—Moulds
    • B29C44/583—Moulds for making articles with cavities
    • 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
    • B29C44/58—Moulds
    • B29C44/588—Moulds with means for venting, e.g. releasing foaming gas
    • 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
    • B29C44/60—Measuring, controlling or regulating
    • 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B29K2023/12—PP, i.e. polypropylene
    • 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
    • B29K2025/00—Use of polymers of vinyl-aromatic compounds or derivatives thereof as moulding material
    • B29K2025/04—Polymers of styrene
    • B29K2025/06—PS, i.e. polystyrene

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

본 발명은 복잡한 형상을 가지면서도 균일하고 고밀도의 단단한 표충을 표면에 가지며, 수축이 거의 없고 또한 외관이 양호한 발포 성형물을 제조하는 방법에 관한 것이다.

Description

고밀도의 표층을 갖는 발포 성형물의 제조 방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명에 따른 성형물을 제조할 때 사용한 주형의 개략적인 단면다,제2도는 실시예 1과 2에서의 가열 시간과 표면 압력 사이의 관계를 나타내는 그래프.

Claims (3)

  1. 하나 이상의 증기실을 각각 가지고 있는 오목 주형과 블록 주형으로 구성된 주형안에 발포 수지 입자를 충전 및 융착시켜 고밀도의 표충을 갖는 불포 성형물을 제조하는 방법에 있어서, 오목 주형과 블록 주형사이에 형성된 공동에 발포 수지 입자를 압축-충전시키고, 오목 주형 또는 볼록 주형의 증기실에 증기를 주입하여 상기 발포 수지 입자의 용융점 이상의 온도로 주형을 가열하면서 주형과 접촉하는 발포 수지 입자를 용융시켜 성형물 표면에 표충을 형성시키고, 주형에 충전된 발포 수지 입자의 표면 압력을 측정하고, 상기 입자의 표면 압력이 0.01 내지 1.5㎏/㎠G의 범위에 있을 때, 주형 내에 잔존하는 입자 공극의 공기를 배출시키고, 또 입자 사이의 공간으로 상기 수지 입자의 용융점 이하 온도의 증기를 주입하여 이들 입자를 함께 가열 융착시키는 것을 특징으로 하는 발포 성형물의 제조 방법.
  2. 제1항에 있어서, 하기 식(Ⅰ)로 구한 입자의 압출율이 3 내지 70%의 범위에 속하도록 발포 수지 입자를 충전시키는 방법:
    상기 식에서, C : 압축율(%), p1: 충전 전 발포 수지 입자의 밀도(㎏/㎥), p2: 표층 의 밀도(㎏/㎥), p3: 표층이외 부위의 밀도(㎏/㎥), t1: 성형물의 두께(㎜), t2: 표층의 두께(㎜), t3: 표충 이외 부위의 두께(㎜).
  3. 제1항에 있어서, 발포수지 입자가 폴리스티렌 수지 입자, 폴리에틸렌 수지 입자 및 폴리프로필렌 수지 입자로 구성된 군으로부터 선택된 한 종류 이상의 입자인 방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019970015503A 1996-04-25 1997-04-25 고밀도의 표층을 갖는 발포 성형물의 제조 방법 KR100463566B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP12905996 1996-04-25
JP8-129059 1996-04-25

Publications (2)

Publication Number Publication Date
KR970069295A true KR970069295A (ko) 1997-11-07
KR100463566B1 KR100463566B1 (ko) 2005-04-06

Family

ID=15000079

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019970015503A KR100463566B1 (ko) 1996-04-25 1997-04-25 고밀도의 표층을 갖는 발포 성형물의 제조 방법

Country Status (5)

Country Link
KR (1) KR100463566B1 (ko)
CN (1) CN1083327C (ko)
MY (1) MY117763A (ko)
SG (1) SG71705A1 (ko)
TW (1) TW386059B (ko)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101487746B (zh) * 2008-08-29 2011-07-06 深圳市飞荣达科技股份有限公司 Emi产品压缩力测试方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5311994B2 (ko) * 1974-11-13 1978-04-26
JPS5239768A (en) * 1975-09-25 1977-03-28 Daikin Ind Ltd Method of manufacture of drain pan
JPS55148135A (en) * 1979-05-07 1980-11-18 Sekisui Plastics Co Ltd Manufacture of foamed and molded piece with skin
JPS55158940A (en) * 1979-05-28 1980-12-10 Sekisui Plastics Co Ltd Manufacture of foamed body with skin
JPS5831722A (ja) * 1981-08-20 1983-02-24 Daisen Kogyo:Kk 合成樹脂の発泡成形法および発泡成形装置
JPS6250107A (ja) * 1985-06-21 1987-03-04 Toyo Seikan Kaisha Ltd 樹脂供給装置
JPS63260416A (ja) * 1986-04-15 1988-10-27 Japan Styrene Paper Co Ltd 発泡成形体の製造方法
JPH07102422B2 (ja) * 1987-06-22 1995-11-08 日立化成工業株式会社 鋳造法用の消失発泡体模型の成形方法
JPH06278143A (ja) * 1993-03-26 1994-10-04 Kanegafuchi Chem Ind Co Ltd 発泡合成樹脂成形品の成形方法

Also Published As

Publication number Publication date
SG71705A1 (en) 2000-04-18
MY117763A (en) 2004-08-30
TW386059B (en) 2000-04-01
KR100463566B1 (ko) 2005-04-06
CN1169365A (zh) 1998-01-07
CN1083327C (zh) 2002-04-24

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