GB1088023A – Method for the production of shaped foamed compositions
– Google Patents
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
1964-02-24
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.)
1964-02-24
Filing date
1964-02-24
Publication date
1967-10-18
1964-02-24
Application filed by Dunlop Rubber Co Ltd
filed
Critical
Dunlop Rubber Co Ltd
1964-02-24
Priority to GB768364A
priority
Critical
patent/GB1088023A/en
1965-02-24
Priority to BE660185A
priority
patent/BE660185A/xx
1967-10-18
Publication of GB1088023A
publication
Critical
patent/GB1088023A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
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
1964
1964-02-24
GB
GB768364A
patent/GB1088023A/en
not_active
Expired
1965
1965-02-24
BE
BE660185A
patent/BE660185A/xx
unknown
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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