GB1239099A - - Google Patents

Info

Publication number
GB1239099A
GB1239099A GB1239099DA GB1239099A GB 1239099 A GB1239099 A GB 1239099A GB 1239099D A GB1239099D A GB 1239099DA GB 1239099 A GB1239099 A GB 1239099A
Authority
GB
United Kingdom
Prior art keywords
polystyrene
sulphur
mixture
oil
mould
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
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 filed Critical
Publication of GB1239099A publication Critical patent/GB1239099A/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
    • B29C44/38—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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
    • 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
    • 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
    • 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
    • C08J2325/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
    • C08J2325/02—Homopolymers or copolymers of hydrocarbons
    • C08J2325/04—Homopolymers or copolymers of styrene
    • C08J2325/06—Polystyrene

Abstract

1,239,099. Foamed polystyrene articles with hardened surface. OVERMAN A.B. 4 July, 1969 [8 July, 1968], No. 33803/69. Heading B5A. A cellular polystyrene article with a hardened surface is made by coating the inside of a mould with a mixture of sulphur and a substance capable of reacting with expanded polystyrene and sulphur at a temperature of 100-110‹ C. to form a hard material, filling the mould with expandable polystyrene, closing the mould and heating to expand the polystyrene and form a hard layer on its surface. The substance which reacts with the sulphur and polystyrene may be a hydrocarbon oil or a mixture of such oils e.g. a fuel oil, a vegetable oil e.g. linseed oil, an animal oil or wood or coal tar. A solvent for polystyrene, e.g. styrene and a thermoplastic resin may also be added to the mixture. The proportion of sulphur in the mixture should be 1À5-70 wt. per cent preferably 25-50 wt. per cent. The polystyrene is preferably expanded by steam or hot air at a temp. of 100-110‹ C. and a reinforcing layer comprising, for example, a textile fabric, woven glass cloth, jute fabric or asbestos fibres may be placed over the coating before foaming.
GB1239099D 1968-07-08 1969-07-04 Expired GB1239099A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9373/68A SE333236B (en) 1968-07-08 1968-07-08 METHOD OF MANUFACTURING EXPERIENCED ARTICLES OF STYRENE CELL PLASTIC

Publications (1)

Publication Number Publication Date
GB1239099A true GB1239099A (en) 1971-07-14

Family

ID=20276517

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1239099D Expired GB1239099A (en) 1968-07-08 1969-07-04

Country Status (7)

Country Link
DE (1) DE1929331A1 (en)
DK (1) DK121975B (en)
FI (1) FI48357C (en)
FR (1) FR2012504A1 (en)
GB (1) GB1239099A (en)
NO (1) NO130758C (en)
SE (1) SE333236B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2276582A (en) * 1993-03-12 1994-10-05 David Gaskill Moulded foamed structures

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4260569A (en) * 1978-09-01 1981-04-07 Hurst Aubrey J Method of making a foamed polystyrene building panel
CA1217913A (en) * 1982-03-05 1987-02-17 Bertel Jansson Method of insulating pipe details
EP0091970A3 (en) * 1982-03-20 1984-09-05 Flewu AG Apparatus for the simultaneous production of especially different moulded articles of sintered polystyrene foam with interchangeable moulding tools
DE10033877A1 (en) * 2000-07-12 2002-03-14 Fraunhofer Ges Forschung Process for the production of molded parts from particle foam with a cover layer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2276582A (en) * 1993-03-12 1994-10-05 David Gaskill Moulded foamed structures
GB2276582B (en) * 1993-03-12 1997-10-29 David Gaskill Foam structures,methods and apparatus for manufacture using foams and articles made thereby

Also Published As

Publication number Publication date
NO130758C (en) 1975-02-05
DK121975B (en) 1971-12-27
NO130758B (en) 1974-10-28
DE1929331A1 (en) 1970-01-15
FI48357B (en) 1974-05-31
SE333236B (en) 1971-03-08
FR2012504A1 (en) 1970-03-20
FI48357C (en) 1974-09-10

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees