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GB980754A - Moulding polyurethane foam - Google Patents

Moulding polyurethane foam

Info

Publication number
GB980754A
GB980754A GB1064462A GB1064462A GB980754A GB 980754 A GB980754 A GB 980754A GB 1064462 A GB1064462 A GB 1064462A GB 1064462 A GB1064462 A GB 1064462A GB 980754 A GB980754 A GB 980754A
Authority
GB
United Kingdom
Prior art keywords
guides
rigid
foam
polyurethane
foamed plastic
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
GB1064462A
Inventor
Alan Metcalf Wooler
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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
Priority to BE629865D priority Critical patent/BE629865A/xx
Application filed by Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB1064462A priority patent/GB980754A/en
Publication of GB980754A publication Critical patent/GB980754A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B29C44/58—Moulds
    • 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
    • B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
    • B29C33/40—Plastics, e.g. foam or rubber
    • 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
    • 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

Landscapes

  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

A polyurethane foam is allowed to form in a mould made from foamed plastic material. The would may have a lid and may be made either by coating a plaster cast with a release agent and then applying the foam or by sticking sheets or slabs of foamed material into a box shape. The process may be carried out continuously by allowing the foam to form on a moving conveyer between guides which are moving in the same direction, the conveyer and the guides being covered with foamed material. A stationary or moving cover may be furnished above the guides and a foamed plastic end curtain may be used. The foamed plastic material may be urea-formaldehyde or phenolformaldehyde resin or may be a rigid polyurethane foam produced from an organic polyisocyanate and a hydroxyl-group containing polymer in the presence of a low boiling organic liquid, e.g. a fluorinated hydrocarbon. The mould may be lined with a release agent, e.g. a silicone fluid or resin, a mineral or vegetable oil, a grease, wax or polytetrafluoroethylene, or a thin film of paper or polyethylene or for permanent adherance fabric, leather, fur or felt. The moulded polyurethane may be flexible, rigid or semi-rigid and may be prepared from an organic polyisocyanate and a hydroxyl-group containing polyester, polyesteramide or polyether with added water and/or low boiling point organic liquid. In the example a polyether prepared from propylene oxide and glycerol is reacted with tolylene diisocyanate and water in the presence of stannous octoate, triethylene diamine and a siloxane/oxyalkylene block copolymer. Foaming takes place in a closed mould made from polyurethane slabs and lined with a polythene bag.
GB1064462A 1962-03-20 1962-03-20 Moulding polyurethane foam Expired GB980754A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BE629865D BE629865A (en) 1962-03-20
GB1064462A GB980754A (en) 1962-03-20 1962-03-20 Moulding polyurethane foam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1064462A GB980754A (en) 1962-03-20 1962-03-20 Moulding polyurethane foam

Publications (1)

Publication Number Publication Date
GB980754A true GB980754A (en) 1965-01-20

Family

ID=9971641

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1064462A Expired GB980754A (en) 1962-03-20 1962-03-20 Moulding polyurethane foam

Country Status (2)

Country Link
BE (1) BE629865A (en)
GB (1) GB980754A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2254820A (en) * 1991-04-16 1992-10-21 British Aerospace Tooling for composite component manufacture
EP1018417A1 (en) * 1999-01-07 2000-07-12 Shell Internationale Researchmaatschappij B.V. Coated mould for making polyurethane foams

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2254820A (en) * 1991-04-16 1992-10-21 British Aerospace Tooling for composite component manufacture
GB2254820B (en) * 1991-04-16 1995-04-19 British Aerospace Tooling for composite component manufacture
EP1018417A1 (en) * 1999-01-07 2000-07-12 Shell Internationale Researchmaatschappij B.V. Coated mould for making polyurethane foams

Also Published As

Publication number Publication date
BE629865A (en)

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