JPS56150521A - Manufacture of foamed polyethylene resin molding - Google Patents

Manufacture of foamed polyethylene resin molding

Info

Publication number
JPS56150521A
JPS56150521A JP5500080A JP5500080A JPS56150521A JP S56150521 A JPS56150521 A JP S56150521A JP 5500080 A JP5500080 A JP 5500080A JP 5500080 A JP5500080 A JP 5500080A JP S56150521 A JPS56150521 A JP S56150521A
Authority
JP
Japan
Prior art keywords
polyethylene resin
granules
prefoamed
foamed polyethylene
xrho
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
JP5500080A
Other languages
Japanese (ja)
Inventor
Shigeya Sato
Tsukasa Yamagishi
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.)
Asahi Dow Ltd
Asahi Chemical Industry Co Ltd
Original Assignee
Asahi Dow Ltd
Asahi Chemical Industry 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 Asahi Dow Ltd, Asahi Chemical Industry Co Ltd filed Critical Asahi Dow Ltd
Priority to JP5500080A priority Critical patent/JPS56150521A/en
Priority to CA000366174A priority patent/CA1147100A/en
Priority to US06/213,643 priority patent/US4366263A/en
Priority to DE8080107757T priority patent/DE3072109D1/en
Priority to EP80107757A priority patent/EP0032557B1/en
Publication of JPS56150521A publication Critical patent/JPS56150521A/en
Priority to HK284/89A priority patent/HK28489A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/22—After-treatment of expandable particles; Forming foamed products
    • C08J9/228—Forming foamed products
    • 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
    • B29C67/205—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 comprising surface fusion, and bonding of particles to form voids, e.g. sintering
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/16—Making expandable particles
    • C08J9/18—Making expandable particles by impregnating polymer particles with the blowing agent
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2203/00—Foams characterized by the expanding agent
    • C08J2203/14—Saturated hydrocarbons, e.g. butane; Unspecified hydrocarbons
    • C08J2203/142—Halogenated saturated hydrocarbons, e.g. H3C-CF3
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

PURPOSE:To provide a foamed polyethylene molding of a superior quality in the longtime dimensional stability, smoothness and shrink mark, by charging prefoamed granules of bridged polyethylene resin having a specific density and a specific Vicat softening point by means of gas compression and foam-molding the granules by heating. CONSTITUTION:Bridged prefoamed granules are prepared by using a polyethylene resin having a density rho of 0.925-0.940g/cm<3> and a Vicat softening point Ts represented by the absolute temperature system and satisfying a relationship: 14/15X 10<3>Xrho-1483/3<=Ts<=13/15X10<3>Xrho-1274/3. The prefoamed granules are supplied into a mold and compressed by a gas pressure to a volume as great as 82-98% of the original volume thereof, and heated to foam. This method eliminates the treatment for providing a foaming capability.
JP5500080A 1979-12-10 1980-04-25 Manufacture of foamed polyethylene resin molding Pending JPS56150521A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP5500080A JPS56150521A (en) 1980-04-25 1980-04-25 Manufacture of foamed polyethylene resin molding
CA000366174A CA1147100A (en) 1979-12-10 1980-12-04 Expanded cross-linked polyethylene particle, a molded product thereof and the methods thereof
US06/213,643 US4366263A (en) 1979-12-10 1980-12-05 Expanded cross-linked polyethylene particle, a molded product thereof and the methods thereof
DE8080107757T DE3072109D1 (en) 1979-12-10 1980-12-09 An expanded cross-linked polyethylene particle and methods to produce molded products thereof
EP80107757A EP0032557B1 (en) 1979-12-10 1980-12-09 An expanded cross-linked polyethylene particle and methods to produce molded products thereof
HK284/89A HK28489A (en) 1979-12-10 1989-04-06 An expanded cross-linked polyethylene particle and methods to produce molded products thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5500080A JPS56150521A (en) 1980-04-25 1980-04-25 Manufacture of foamed polyethylene resin molding

Publications (1)

Publication Number Publication Date
JPS56150521A true JPS56150521A (en) 1981-11-21

Family

ID=12986377

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5500080A Pending JPS56150521A (en) 1979-12-10 1980-04-25 Manufacture of foamed polyethylene resin molding

Country Status (1)

Country Link
JP (1) JPS56150521A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63183832A (en) * 1986-09-16 1988-07-29 Kanegafuchi Chem Ind Co Ltd Manufacture of polypropylene resin in-mold foam molding

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63183832A (en) * 1986-09-16 1988-07-29 Kanegafuchi Chem Ind Co Ltd Manufacture of polypropylene resin in-mold foam molding

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