GB1260287A - Improvements in or relating to the manufacture of polyurethane or isocyanurate foams - Google Patents

Improvements in or relating to the manufacture of polyurethane or isocyanurate foams

Info

Publication number
GB1260287A
GB1260287A GB5778/68A GB577868A GB1260287A GB 1260287 A GB1260287 A GB 1260287A GB 5778/68 A GB5778/68 A GB 5778/68A GB 577868 A GB577868 A GB 577868A GB 1260287 A GB1260287 A GB 1260287A
Authority
GB
United Kingdom
Prior art keywords
conveyer
release papers
release
rolls
continuously
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
GB5778/68A
Inventor
Herbert Kent Hartley
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.)
COOLAG Ltd
Original Assignee
COOLAG 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 COOLAG Ltd filed Critical COOLAG Ltd
Priority to GB5778/68A priority Critical patent/GB1260287A/en
Publication of GB1260287A publication Critical patent/GB1260287A/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
    • B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
    • B29C44/30—Expanding the moulding material between endless belts or rollers
    • 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

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

Abstract

1,260,287. Continuously moulding plastics foam blocks. COOLAG Ltd. 5 Feb., 1969 [6 Feb., 1968], No. 5778/68. Heading B5A. Polyurethane foam is continuously moulded from a reactive mixture (of isocyanate and a blend of polyol with catalysts, blowing agents, fire retardants and stabilizers) which is deposited on to a moving endless belt 10, from a transversely reciprocated nozzle 16, which co-operates with a pair of moving endless side belts, e.g. 14, and with a flat surface 19 which is inclined to the belt 10 so that the reactive mixture is continuously in contact therewith as it expands on foaming. The flat surface 19 may comprise a conveyer, but in the embodiment shown is a stationary platform angularly and longitudinally adjustable with respect to the belt 10, and which may be spring-loaded- Release papers line the bottom and side conveyers and the surface 19, traversing between unwinding and winding-up rolls at either end of the apparatus, and the bottom release paper may be upturned to overlap the side release papers. To prevent restriction of upward movement of the expanding foam by the side conveyers, additional side release papers may be provided which traverse downwardly from a pair of rolls, e.g. 20, around folding guide bars, e.g. 22, to follow an upward path, with the expanding foam, to rolls, e.g. 24. The side release papers may further be coated with soft high-melting point material. Some of the release papers may be dispensed with, e.g. if the side conveyer surfaces and the surface 19, when comprising a moving conveyer, are of polytetrafluoroethylene or are sprayed with silicone release agent. Uniform expansion across the width of the foaming block may be facilitated by the application of heat to the side regions thereof. high-melting point material. Some of the release papers may be dispensed with, e.g. if the side conveyer surfaces and the surface 19, when comprising a moving conveyer, are of polytetrafluoroethylene or are sprayed with silicone release agent. Uniform expansion across the width of the foaming block may be facilitated by the application of heat to the side regions thereof.
GB5778/68A 1968-02-06 1968-02-06 Improvements in or relating to the manufacture of polyurethane or isocyanurate foams Expired GB1260287A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5778/68A GB1260287A (en) 1968-02-06 1968-02-06 Improvements in or relating to the manufacture of polyurethane or isocyanurate foams

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5778/68A GB1260287A (en) 1968-02-06 1968-02-06 Improvements in or relating to the manufacture of polyurethane or isocyanurate foams

Publications (1)

Publication Number Publication Date
GB1260287A true GB1260287A (en) 1972-01-12

Family

ID=9802449

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5778/68A Expired GB1260287A (en) 1968-02-06 1968-02-06 Improvements in or relating to the manufacture of polyurethane or isocyanurate foams

Country Status (1)

Country Link
GB (1) GB1260287A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0061412A1 (en) * 1981-03-24 1982-09-29 Jean Poncet Method and apparatus for the manufacture of synthetic-foam sheets
WO1986001149A1 (en) * 1984-08-06 1986-02-27 Crest-Foam Corp. Polymeric buns and method and apparatus for their manufacture
CN110027145A (en) * 2019-04-02 2019-07-19 山东凤阳佰乐舒家居有限公司 Polymorphic type sponge compound plastic system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0061412A1 (en) * 1981-03-24 1982-09-29 Jean Poncet Method and apparatus for the manufacture of synthetic-foam sheets
FR2502541A1 (en) * 1981-03-24 1982-10-01 Poncet Jean METHOD AND DEVICE FOR MANUFACTURING POLYMER FOAM BANDS AND PRODUCTS OBTAINED
WO1982003357A1 (en) * 1981-03-24 1982-10-14 Jean Poncet Method and device for manufacturing polymer foam webs and product obtained thereby
WO1986001149A1 (en) * 1984-08-06 1986-02-27 Crest-Foam Corp. Polymeric buns and method and apparatus for their manufacture
US4605683A (en) * 1984-08-06 1986-08-12 Crest-Foam Corporation Polymeric buns and method and apparatus for its manufacture
CN110027145A (en) * 2019-04-02 2019-07-19 山东凤阳佰乐舒家居有限公司 Polymorphic type sponge compound plastic system
CN110027145B (en) * 2019-04-02 2021-08-06 山东恒富家居科技有限公司 Multi-type sponge composite plasticity system

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees