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GB1249220A - A process for producing elastic foam moulded articles - Google Patents

A process for producing elastic foam moulded articles

Info

Publication number
GB1249220A
GB1249220A GB02199/69A GB1219969A GB1249220A GB 1249220 A GB1249220 A GB 1249220A GB 02199/69 A GB02199/69 A GB 02199/69A GB 1219969 A GB1219969 A GB 1219969A GB 1249220 A GB1249220 A GB 1249220A
Authority
GB
United Kingdom
Prior art keywords
weight
mixture
segments
granules
parts
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
GB02199/69A
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.)
Asahi Kasei Corp
Asahi Chemical Industry Co Ltd
Original Assignee
Asahi Chemical Industry Co Ltd
Asahi Kasei Kogyo KK
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 Asahi Chemical Industry Co Ltd, Asahi Kasei Kogyo KK filed Critical Asahi Chemical Industry Co Ltd
Publication of GB1249220A publication Critical patent/GB1249220A/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
    • C08J9/22—After-treatment of expandable particles; Forming foamed products
    • C08J9/228—Forming foamed products
    • C08J9/232—Forming foamed products by sintering expandable particles
    • 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
    • B29C44/3461—Making or treating expandable particles
    • 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
    • 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
    • C08J9/16—Making expandable particles
    • 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

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)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

1,249,220. Extruding elastic foam. ASAHI KASEI KOGYO K.K. 7 March, 1969 [9 March, 1968], No. 12199/69. Heading B5A. [Also in Division C3] An elastic foam moulded article is made by extruding under pressure and at elevated temperature through holes a fluid mixture obtained by mixing (1) 100 parts by weight of a thermoplastic elastomeric block copolymer represented by the formula or or wherein B represents a 1,3-butadiene polymer block, S represents a styrene polymer block, n is 2 to 10 and m is 1 to 10, the copolymer having a molecular weight of 10,000 to 500,000 and a styrene content of 10 to 70% by weight, or a mixture of such block copolymers, (2) 25 to 300 parts by weight of polystyrene, and (3) 0À1 to 100 parts by weight of a foaming agent which is an organic compound having a boiling point lower than the softening temperature of the polystyrene, cutting the resultant extruded mixture into segments while the same is still soft and not yet completely expanded, allowing the resultant segments to foam and expand, cooling the foamed and expanded segments to form granules, filling the granules into a closable but not air-tight mould and heating the granules therein to a temperature at which they soften and further foam and expand. The mixer used to form the mixture may be connected to one end of a screw type extruder having a die with fine holes at the other end with a rotatory knife spaced not more than 1 mm. from the face of the die.
GB02199/69A 1968-03-09 1969-03-07 A process for producing elastic foam moulded articles Expired GB1249220A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1496468 1968-03-09

Publications (1)

Publication Number Publication Date
GB1249220A true GB1249220A (en) 1971-10-13

Family

ID=11875645

Family Applications (1)

Application Number Title Priority Date Filing Date
GB02199/69A Expired GB1249220A (en) 1968-03-09 1969-03-07 A process for producing elastic foam moulded articles

Country Status (2)

Country Link
FR (1) FR2003581A1 (en)
GB (1) GB1249220A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2162789A (en) * 1984-07-16 1986-02-12 Cosden Technology Process for making expandable polystyrene
WO2005091270A2 (en) * 2004-03-17 2005-09-29 Stephen William Briggs Drum stick holder
WO2020128635A2 (en) 2018-12-20 2020-06-25 Dynasol Elastomeros, S.A. De C.V. Dual composition block copolymers
CN113867019A (en) * 2020-06-30 2021-12-31 成都天马微电子有限公司 Liquid crystal phase shifter and manufacturing method thereof

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE759714A (en) * 1969-12-08 1971-06-02 Shell Int Research METHOD OF MANUFACTURE OF EXTRUDE FOAMED PLASTICS
US5190986A (en) * 1990-07-09 1993-03-02 General Electric Company Elastomeric low density foamable compositions and process of making the same and articles made therefrom
US5130340A (en) * 1990-07-09 1992-07-14 General Electric Company Elastomeric low density foamable compositions and process of making the same and articles made therefrom

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2162789A (en) * 1984-07-16 1986-02-12 Cosden Technology Process for making expandable polystyrene
WO2005091270A2 (en) * 2004-03-17 2005-09-29 Stephen William Briggs Drum stick holder
WO2005091270A3 (en) * 2004-03-17 2005-11-17 Stephen William Briggs Drum stick holder
US7687699B2 (en) 2004-03-17 2010-03-30 Silclear Limited Drum stick holder
WO2020128635A2 (en) 2018-12-20 2020-06-25 Dynasol Elastomeros, S.A. De C.V. Dual composition block copolymers
EP4324880A2 (en) 2018-12-20 2024-02-21 Dynasol Elastómeros, S.A.de C.V. Dual composition block copolymers
US12054613B2 (en) 2018-12-20 2024-08-06 Dynasol Elastómeros, S.A. De C.V. Dual composition block copolymers
CN113867019A (en) * 2020-06-30 2021-12-31 成都天马微电子有限公司 Liquid crystal phase shifter and manufacturing method thereof
CN113867019B (en) * 2020-06-30 2024-05-07 成都天马微电子有限公司 Liquid crystal phase shifter and manufacturing method thereof

Also Published As

Publication number Publication date
DE1911395B2 (en) 1976-12-09
DE1911395A1 (en) 1971-04-22
FR2003581A1 (en) 1969-11-07

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