JPS55148135A - Manufacture of foamed and molded piece with skin - Google Patents

Manufacture of foamed and molded piece with skin

Info

Publication number
JPS55148135A
JPS55148135A JP5604679A JP5604679A JPS55148135A JP S55148135 A JPS55148135 A JP S55148135A JP 5604679 A JP5604679 A JP 5604679A JP 5604679 A JP5604679 A JP 5604679A JP S55148135 A JPS55148135 A JP S55148135A
Authority
JP
Japan
Prior art keywords
foamed
skin
grains
molded piece
piece
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
JP5604679A
Other languages
Japanese (ja)
Inventor
Toshio Sugawara
Hisao Honda
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.)
Sekisui Kasei Co Ltd
Original Assignee
Sekisui Plastics 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 Sekisui Plastics Co Ltd filed Critical Sekisui Plastics Co Ltd
Priority to JP5604679A priority Critical patent/JPS55148135A/en
Publication of JPS55148135A publication Critical patent/JPS55148135A/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
    • 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
    • B29C44/3426—Heating by introducing steam in the mould
    • 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
    • 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
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • B29K2105/043—Skinned foam

Abstract

PURPOSE:To manufacture a foamed and molded piece which has a skin of uniform thickness and whose surface is smooth, by heating and foaming grains of a copolymer of styrene with maleic anhydride to provide the foamed and molded piece and heating the surface of the piece to make the skin. CONSTITUTION:3-40wt% of a gaseous or liquid foaming agent such as propane, butane, cyclohexane, methyl chloride or the like, is added to grains of a copolymer of styrene with maleic anhydride, the maleic anhydride content of which is 2-25 wt% and the average polymerization degree of which is 500-4,000. A solvent such as benzene or toluene for dissolving the copolymer grains is added thereto together with the foaming agent. After the resin grains are preparatorily foamed, they are filled in a cavity 3 defined by a male mold 1 and a female mold 2. Steam of 2kg/ cm<2> or less is introduced into the cavity 3 to heat and foam the grains to make a foamed and molded piece. The surface of the piece is heated to a temperature not lower than 120 deg.C to make a skin on the surface. This results in providing the foamed and molded piece having the skin.
JP5604679A 1979-05-07 1979-05-07 Manufacture of foamed and molded piece with skin Pending JPS55148135A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5604679A JPS55148135A (en) 1979-05-07 1979-05-07 Manufacture of foamed and molded piece with skin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5604679A JPS55148135A (en) 1979-05-07 1979-05-07 Manufacture of foamed and molded piece with skin

Publications (1)

Publication Number Publication Date
JPS55148135A true JPS55148135A (en) 1980-11-18

Family

ID=13016135

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5604679A Pending JPS55148135A (en) 1979-05-07 1979-05-07 Manufacture of foamed and molded piece with skin

Country Status (1)

Country Link
JP (1) JPS55148135A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58171924A (en) * 1982-04-02 1983-10-08 Honda Motor Co Ltd Foamed resin molded object
KR100463566B1 (en) * 1996-04-25 2005-04-06 미쓰비시 케미칼 바스프 컴패니 리미티드 Method for producing foam molding having a high density surface layer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58171924A (en) * 1982-04-02 1983-10-08 Honda Motor Co Ltd Foamed resin molded object
KR100463566B1 (en) * 1996-04-25 2005-04-06 미쓰비시 케미칼 바스프 컴패니 리미티드 Method for producing foam molding having a high density surface layer

Similar Documents

Publication Publication Date Title
US3124627A (en) Slotted
GB818097A (en) Method for expanding into a foam structure thermoplastic resins and articles thereby obtained
CA1202458A (en) Foam polymer process
US2857625A (en) Low density extruded styrene polymer foams
ES271384A1 (en) Process for making shaped cellular articles from foamable thermoplastic alkenyl aromatic resins
US3547838A (en) Method for producing cellular plastic articles and the articles produced thereby
US3956203A (en) Manufacture of particulate expandable styrene polymers requiring shot minimum residence times in the mold
JPS55148135A (en) Manufacture of foamed and molded piece with skin
DK597085D0 (en) PROCEDURE FOR THE PREPARATION OF CROSS-BONDED POLYOLINE FOAM
JPS5699635A (en) Preparation of styrene resin foam plate of large thickness
JPS5679131A (en) Preparation of resin foam highly loaded with inorganic material
GB1249220A (en) A process for producing elastic foam moulded articles
JPS56121739A (en) Manufacture of cross-linked polyolefin continuous foamed body
JPS55110131A (en) Preparation of styrene resin foam having improved dimensional stability
JPS55149328A (en) Preparation of foamed vinyl chloride resin molded article
JPS55125129A (en) Production of foamable thermoplastic polymer particle
FR2282988A1 (en) Expanded moulded polyvinyl chloride bodies prepn. - obviating adhesives, using polymer pearls impregnated with porogenic agents
JPS54120669A (en) Preparation of thermoplastic resin foamed article
JPS55157629A (en) Foam of low-density ethylenevinyl acetate copolymer resin and its preparation
GB1110350A (en) Process of producing flexible foam polystyrene sheeting
JPH0575012B2 (en)
JPH0348016B2 (en)
JPS55152725A (en) Preparation of moldedarticle of foamed vinyl chloride resin
JPS5692931A (en) Foamed molded article of heat-resistant synthetic resin
JPS58215328A (en) Manufacture of stylene based resin foamed body