GB1082277A - Improvements in or relating to coated expanded polystyrene foam and method of producing the same - Google Patents

Improvements in or relating to coated expanded polystyrene foam and method of producing the same

Info

Publication number
GB1082277A
GB1082277A GB51485/64A GB5148564A GB1082277A GB 1082277 A GB1082277 A GB 1082277A GB 51485/64 A GB51485/64 A GB 51485/64A GB 5148564 A GB5148564 A GB 5148564A GB 1082277 A GB1082277 A GB 1082277A
Authority
GB
United Kingdom
Prior art keywords
weight
beads
expandable
thermoplastic resin
styrene
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
GB51485/64A
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.)
Lakeside Plastics Corp
Original Assignee
Lakeside Plastics Corp
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
Priority claimed from US409545A external-priority patent/US3309439A/en
Application filed by Lakeside Plastics Corp filed Critical Lakeside Plastics Corp
Publication of GB1082277A publication Critical patent/GB1082277A/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
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/22—Making multilayered or multicoloured articles
    • 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
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/04—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
    • B29C44/0423—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities by density separation
    • B29C44/043—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities by density separation using a rotating mould
    • 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
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/04—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould
    • B29C41/06—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould about two or more axes
    • 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
    • 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

A free-flowing moulding composition comprises expandable beads of a styrene polymer, from 0.33 to 3.0 parts by weight, per part by weight of expandable beads, of a non-expandable thermoplastic resin powder having a density greater than that of the expandable beads, and from 3 to 40% by weight, based on the weight of the expandable beads, of retained water in the form of a hydrate containing at least 25% by weight of chemically bound water. By "styrene polymer" is meant styrene homopolymers and copolymers containing at least 50% by weight of styrene. The preferred amount of thermoplastic resin powder is from 0.67 to 1.50 parts by weight per part beads. The composition may contain not more than 20% by weight, based on the weight of the beads, of an inert drying substance. Many thermoplastic resins are mentioned, polyethylene being the preferred one. Many hydrates are mentioned, sodium silicate and sodium tetraborate being the preferred ones. The composition may be used in a process where it is placed in a heated mould and moved in a source of heat so that the denser non-expandable thermoplastic resin moves to a position against the mould walls and fuses against them to form an external coating, the polystyrene beads foaming and fusing together and to the coating. The function of the hydrate is to provide water which is converted into steam and acts as a heat distributing agent to ensure uniform heating of the beads. In the examples ethylene-ethyl acrylate copolymer and ethylene-vinyl acetate copolymer are used as non-expandable resins.
GB51485/64A 1963-12-19 1964-12-17 Improvements in or relating to coated expanded polystyrene foam and method of producing the same Expired GB1082277A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US33180263A 1963-12-19 1963-12-19
US409545A US3309439A (en) 1964-11-06 1964-11-06 Method of producing an expanded polystyrene foam having a dense surface

Publications (1)

Publication Number Publication Date
GB1082277A true GB1082277A (en) 1967-09-06

Family

ID=26987931

Family Applications (1)

Application Number Title Priority Date Filing Date
GB51485/64A Expired GB1082277A (en) 1963-12-19 1964-12-17 Improvements in or relating to coated expanded polystyrene foam and method of producing the same

Country Status (8)

Country Link
BE (1) BE657156A (en)
CH (1) CH441749A (en)
DE (1) DE1569116A1 (en)
DK (1) DK106461C (en)
ES (1) ES307132A1 (en)
GB (1) GB1082277A (en)
NL (1) NL6414823A (en)
SE (1) SE312679B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2476534A1 (en) * 2011-01-13 2012-07-18 100% Recycled Panel Company Limited A moulding method
RU2574619C1 (en) * 2011-01-13 2016-02-10 100% Рисайклд Пэнл Кампани Лимитед Moulding process
EP3753717A4 (en) * 2018-01-31 2021-05-05 ASICS Corporation Method for producing resin molded body and shoe sole member

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2476534A1 (en) * 2011-01-13 2012-07-18 100% Recycled Panel Company Limited A moulding method
WO2012095635A1 (en) * 2011-01-13 2012-07-19 100% Recycled Panel Company Limited A moulding method
US8940212B2 (en) 2011-01-13 2015-01-27 100 Percent Recycled Panel Company Limited Method for producing a moulded plastic product
RU2574619C1 (en) * 2011-01-13 2016-02-10 100% Рисайклд Пэнл Кампани Лимитед Moulding process
EP3753717A4 (en) * 2018-01-31 2021-05-05 ASICS Corporation Method for producing resin molded body and shoe sole member
US11697721B2 (en) 2018-01-31 2023-07-11 Asics Corporation Method for producing resin molded article and shoe sole member

Also Published As

Publication number Publication date
DK106461C (en) 1967-02-06
BE657156A (en) 1965-06-15
CH441749A (en) 1967-08-15
NL6414823A (en) 1965-06-21
SE312679B (en) 1969-07-21
ES307132A1 (en) 1965-04-01
DE1569116A1 (en) 1970-03-26

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