GB1008569A - Improvements in and relating to foamed polymers - Google Patents

Improvements in and relating to foamed polymers

Info

Publication number
GB1008569A
GB1008569A GB37758/64A GB3775864A GB1008569A GB 1008569 A GB1008569 A GB 1008569A GB 37758/64 A GB37758/64 A GB 37758/64A GB 3775864 A GB3775864 A GB 3775864A GB 1008569 A GB1008569 A GB 1008569A
Authority
GB
United Kingdom
Prior art keywords
polymer
weight
density
vinyl
precompacted
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
GB37758/64A
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 GB1008569A publication Critical patent/GB1008569A/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
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • 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
    • B29C44/505—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 a flat die

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)

Abstract

A foamable thermoplastic composition comprising a mixture of 95 to 35% by weight of virgin foamable polymer and 5 to 65% by weight of foamed recycle polymer is extruded after the recycle polymer has been precompacted to increase its bulk density. The composition may be extruded as a sheet and in this case one or both surfaces may be chilled by an air blast, air-water mist, water, nitrogen, argon or helium, to produce a non-porous skin integrally united to a porous core. Polymers which can be used in the process include styrene polymers such as crystal grade polystyrene, high impact polystyrene and mixtures of these, styrene polymers containing at least 50% by weight of styrene, cellulose ethers and esters, homopolymers and interpolymers of monomeric compounds containing the <FORM:1008569/C3/1> grouping, such as olefins, vinyl halides, vinyl esters of carboxylic acids, vinyl ethers, halogenated olefins, unsaturated carboxylic acids and derivatives thereof, interpolymers of the above-mentioned vinylidene monomers with a ,b -unsaturated polycarboxylic acids and derivatives thereof. Polycarbonates, polyoxymethylene, oxymethylene-alkylene oxide copolymers, polyurethanes, polyethylene terephthalate and nylon are also mentioned. The recycle polymer is precompacted so that it has a density of at least 65% of the density of the unfoamed polymer. Specification 1,008,568 is referred to.
GB37758/64A 1963-10-01 1964-09-16 Improvements in and relating to foamed polymers Expired GB1008569A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US31307863A 1963-10-01 1963-10-01
US31305163A 1963-10-01 1963-10-01

Publications (1)

Publication Number Publication Date
GB1008569A true GB1008569A (en) 1965-10-27

Family

ID=26978652

Family Applications (2)

Application Number Title Priority Date Filing Date
GB37758/64A Expired GB1008569A (en) 1963-10-01 1964-09-16 Improvements in and relating to foamed polymers
GB37756/64A Expired GB1008568A (en) 1963-10-01 1964-09-16 Improvements in and relating to foamed polymers

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB37756/64A Expired GB1008568A (en) 1963-10-01 1964-09-16 Improvements in and relating to foamed polymers

Country Status (2)

Country Link
GB (2) GB1008569A (en)
NL (1) NL6411401A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3422172A (en) * 1965-03-25 1969-01-14 Shell Oil Co Production of plastic foam sheet

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101761083B1 (en) 2012-01-26 2017-07-24 교라꾸 가부시끼가이샤 Method for producing foam-molded article, and foam-molded article

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3422172A (en) * 1965-03-25 1969-01-14 Shell Oil Co Production of plastic foam sheet

Also Published As

Publication number Publication date
NL6411401A (en) 1965-04-02
GB1008568A (en) 1965-10-27

Similar Documents

Publication Publication Date Title
GB1009290A (en) Thermoplastic resin foam sheet and containers made therefrom
GB1431120A (en) Process for producing non-foamable and foamable polyethylene resin particles
GB1526986A (en) Alkenyl aromatic polymer foam and the preparation thereof
GB1051320A (en) Micro-porous polyethylene and a process for the manufacture thereof
GB1004448A (en) A process for preparing foamed thermoplastic polymers
US3194854A (en) Process for producing thermoplastic foams
US3914191A (en) Methyl format E-trichloromonofluoromethane blowing agent for polystyrene
KR840006355A (en) Low density closed cell porous products made from ethylene copolymer / vinyl or vinylidene halide mixtures
GB1008569A (en) Improvements in and relating to foamed polymers
GB1300233A (en) Improvements in and relating to expandable plastic beads formed of styrene or derivatives thereof
GB994580A (en) Methods of producing synthetic resin products
GB1093805A (en) Styrene polymers
GR3029787T3 (en) Dimensionally-stable polypropylene foam expanded with inorganic blowing agents.
GB1058376A (en) Improvements in or relating to foamable styrene polymer compositions
GB1026495A (en) Process for preparing foamed plastics
GB1008137A (en) Skinned foam plastic sheets
GB1106489A (en) Production of polymers
GB1210626A (en) Improvements in or relating to extrusion of foams of olefin polymers
JP2623136B2 (en) Mixed resin low density foam and method for producing the same
GB1141376A (en) Foamed resins production
GB767465A (en) Improvements in or relating to method of producing a cellular structure in vinyl ester resin
GB1316465A (en) Production of foamed resins
GB1026796A (en) Expanded thermoplastic resinous materials
GB1006926A (en) Foamed thermoplastic resins
JPS55123631A (en) Production of foaming thermoplastic resin particle