GB1008137A - Skinned foam plastic sheets - Google Patents

Skinned foam plastic sheets

Info

Publication number
GB1008137A
GB1008137A GB33826/64A GB3382664A GB1008137A GB 1008137 A GB1008137 A GB 1008137A GB 33826/64 A GB33826/64 A GB 33826/64A GB 3382664 A GB3382664 A GB 3382664A GB 1008137 A GB1008137 A GB 1008137A
Authority
GB
United Kingdom
Prior art keywords
tube
resin
core
sheet
polystyrene
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.)
Expired
Application number
GB33826/64A
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.)
Haveg Industries Inc
Original Assignee
Haveg Industries Inc
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 Haveg Industries Inc filed Critical Haveg Industries Inc
Publication of GB1008137A publication Critical patent/GB1008137A/en
Expired 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
    • C08J9/34—Chemical features in the manufacture of articles consisting of a foamed macromolecular core and a macromolecular surface layer having a higher density than the core
    • 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
    • B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
    • B29C44/50—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying
    • B29C44/507—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying extruding the compound through an annular die
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles

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)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Laminated Bodies (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

A thermoplastic resin sheet with parallel top and bottom surfaces comprises a foam resin core and a continuous, non-porous, unfoamed, tough resin skin integrally united to and circumscribing the core. The sheet is formed by extruding a hot tube of a foamable thermoplastic resin composition, chilling the external surface of the tube to form a non-porous, impervious, tough, unfoamed skin thereon, allowing the remainder of the tube to expand into a foam, applying pressure to opposite outer sides of the skinned tube to collapse and flatten it so that the opposite interior surfaces are fused together to form a single sheet having an external skin integrally united to a foamed core. Thermoplastic resins specified are styrene polymers such as normal crystal grade polystyrene or high impact polystyrene or a mixture of 5-95% normal crystal grade polystyrene and the balance high impact polystyrene. Other specified types of resin are copolymers containing at least 50% by weight of styrene, cellulose ethers and esters, homopolymers and interpolymers of monomeric compounds containing the <FORM:1008137/C3/1> grouping such as olefins, vinyl halides, vinyl esters of carboxylic acids, vinyl ethers, unsaturated carboxylic acids and derivatives thereof, and interpolymers of above mentioned vinylidene monomers with a ,b -unsaturated polycarboxylic acids and derivatives thereof; polycarbonates, oxymethylene-alkylene oxide copolymers and polyurethanes. The outside of the foamed tube is cooled by an air blast, an air-water mist, argon, helium, nitrogen or other inert fluid. Specifications 1,005,477 and 1,007,389 are referred to.
GB33826/64A 1963-08-29 1964-08-19 Skinned foam plastic sheets Expired GB1008137A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US30527563A 1963-08-29 1963-08-29

Publications (1)

Publication Number Publication Date
GB1008137A true GB1008137A (en) 1965-10-27

Family

ID=23180143

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33826/64A Expired GB1008137A (en) 1963-08-29 1964-08-19 Skinned foam plastic sheets

Country Status (1)

Country Link
GB (1) GB1008137A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2946867A1 (en) * 1978-11-20 1980-05-29 Japan Styrene Paper Corp METHOD FOR PRODUCING FOAMED PLASTIC PANELS
EP0186858A2 (en) * 1984-12-25 1986-07-09 Japan Styrene Paper Corporation Foamed base material for car ceiling member
EP0437094A2 (en) * 1989-12-27 1991-07-17 Sekisui Kaseihin Kogyo Kabushiki Kaisha Thermoplastic polyester series resin foamed material and production process thereof
DE19755940A1 (en) * 1997-12-16 1999-06-24 Armstrong Insulation Products Process for the production of a thermally insulating sheet material

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2946867A1 (en) * 1978-11-20 1980-05-29 Japan Styrene Paper Corp METHOD FOR PRODUCING FOAMED PLASTIC PANELS
FR2441478A1 (en) * 1978-11-20 1980-06-13 Japan Styrene Paper Corp MANUFACTURE OF FOAMED PLASTIC SHEETS
EP0186858A2 (en) * 1984-12-25 1986-07-09 Japan Styrene Paper Corporation Foamed base material for car ceiling member
EP0186858A3 (en) * 1984-12-25 1987-11-25 Japan Styrene Paper Corporation Foamed base material for car ceiling member
EP0437094A2 (en) * 1989-12-27 1991-07-17 Sekisui Kaseihin Kogyo Kabushiki Kaisha Thermoplastic polyester series resin foamed material and production process thereof
EP0437094A3 (en) * 1989-12-27 1992-02-05 Sekisui Kaseihin Kogyo Kabushiki Kaisha Thermoplastic polyester series resin foamed material and production process thereof
US5134028A (en) * 1989-12-27 1992-07-28 Sekisui Kaseihin Kogyo Kabushiki Kaisha Thermoplastic polyester series resin foamed material and production process thereof
US5332620A (en) * 1989-12-27 1994-07-26 Sekisui Kaseihin Kogyo Kabushiki Kaisha Thermoplastic polyester series resin foamed material and production process thereof
DE19755940A1 (en) * 1997-12-16 1999-06-24 Armstrong Insulation Products Process for the production of a thermally insulating sheet material

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