GB1088023A - Method for the production of shaped foamed compositions - Google Patents

Method for the production of shaped foamed compositions

Info

Publication number
GB1088023A
GB1088023A GB768364A GB768364A GB1088023A GB 1088023 A GB1088023 A GB 1088023A GB 768364 A GB768364 A GB 768364A GB 768364 A GB768364 A GB 768364A GB 1088023 A GB1088023 A GB 1088023A
Authority
GB
United Kingdom
Prior art keywords
composition
mould
lining
foamed
shaped
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
GB768364A
Inventor
John Jeremy Winchcombe
James Jones-Hinton
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.)
Dunlop Rubber Co Ltd
Original Assignee
Dunlop Rubber Co Ltd
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 Dunlop Rubber Co Ltd filed Critical Dunlop Rubber Co Ltd
Priority to GB768364A priority Critical patent/GB1088023A/en
Priority to BE660185A priority patent/BE660185A/xx
Publication of GB1088023A publication Critical patent/GB1088023A/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
    • B29C44/02—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
    • 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
    • B29C33/68—Release sheets
    • 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
    • B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
    • 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
    • C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2375/04—Polyurethanes

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)
  • Polyurethanes Or Polyureas (AREA)

Abstract

1,088,023. Moulding cellular polyurethane. DUNLOP CO. Ltd. Jan. 18, 1965 [Feb. 24, 1964], No. 7683/64. Heading B5A. A method for the production of a shaped foamed polyurethane composition comprises placing in a mould a lining of a thin sheet formed from a non-metallic material that is releasable from a foamed polyurethane composition, the sheet having been shaped prior to placing within the mould to correspond substantially to the shape of the mould, placing a polyurethane foam-forming composition in the mould and allowing the composition to foam and gel within the lined moulding cavity of the mould, removing the lining from the mould with the gelled foamed polyurethane composition, allowing the foamed composition to mature, and removing the lining from the shaped foamed composition without destroying the surface skin of the shaped composition.' The gelled foamed composition contained within the lining after removal from the mould may be matured by heating e.g. at a temperature of up to 80‹ C. The lining may be formed from a thermoplastic non-metallic polymeric material that has a softening point in excess of the temperature at which the foamed composition is matured, e.g. from a polyolefine such as polyethylene or polypropylene. The lining may be shaped to conform to the mould surface by vacuum forming prior to insertion in the mould. The mould may be formed from polypropylene, glass fibre wetted with a liquid epoxy resin, or from acrylonitrile-butadiene-styrene sheet. The foam-forming composition may comprise a polyurethane prepolymer containing free isocyanate groups, which is the reaction product of a polymeric polyol and a polyisocyanate, and a compound containing active hydrogen atoms readable with the free isocyanate groups to generate carbon dioxide to effect foaming of the composition, or the composition may be prepared by mixing together immediately prior to placing within the lined mould a polymeric polyol, a polyisocyanate, and an active hydrogen atom-containing compound. The polymeric polyol may be a polyester or a polyether and the poly. isocyanate may be an aromatic or an aliphatic diisocyanate, examples of which are given. The foam-forming composition may contain a cross-linking agent, a chain-extension agent, or a catalyst to accelerate cross-linking or chain extension of the composition.
GB768364A 1964-02-24 1964-02-24 Method for the production of shaped foamed compositions Expired GB1088023A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB768364A GB1088023A (en) 1964-02-24 1964-02-24 Method for the production of shaped foamed compositions
BE660185A BE660185A (en) 1964-02-24 1965-02-24

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB768364A GB1088023A (en) 1964-02-24 1964-02-24 Method for the production of shaped foamed compositions

Publications (1)

Publication Number Publication Date
GB1088023A true GB1088023A (en) 1967-10-18

Family

ID=9837795

Family Applications (1)

Application Number Title Priority Date Filing Date
GB768364A Expired GB1088023A (en) 1964-02-24 1964-02-24 Method for the production of shaped foamed compositions

Country Status (2)

Country Link
BE (1) BE660185A (en)
GB (1) GB1088023A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3444321A1 (en) * 1984-12-05 1986-06-05 Ring, Hans-Georg, 2844 Lemförde Fibre-reinforced plastics mouldings, preferably in large-area embodiment, having a smooth coloured or paintable surface, which are provided with a protective film until their further processing, and process for the production thereof
DE3731088A1 (en) * 1987-09-16 1989-04-06 Fehrer Gummihaar Process for producing mouldings from plastic
US20140202616A1 (en) * 2013-01-18 2014-07-24 Menq-Fong Shieh Manufacturing Method of PU Molded Product

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3444321A1 (en) * 1984-12-05 1986-06-05 Ring, Hans-Georg, 2844 Lemförde Fibre-reinforced plastics mouldings, preferably in large-area embodiment, having a smooth coloured or paintable surface, which are provided with a protective film until their further processing, and process for the production thereof
DE3731088A1 (en) * 1987-09-16 1989-04-06 Fehrer Gummihaar Process for producing mouldings from plastic
US20140202616A1 (en) * 2013-01-18 2014-07-24 Menq-Fong Shieh Manufacturing Method of PU Molded Product

Also Published As

Publication number Publication date
BE660185A (en) 1965-06-16

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