GB2050395B - Method of densifying open-celled polyurethane foam - Google Patents

Method of densifying open-celled polyurethane foam

Info

Publication number
GB2050395B
GB2050395B GB7936110A GB7936110A GB2050395B GB 2050395 B GB2050395 B GB 2050395B GB 7936110 A GB7936110 A GB 7936110A GB 7936110 A GB7936110 A GB 7936110A GB 2050395 B GB2050395 B GB 2050395B
Authority
GB
United Kingdom
Prior art keywords
densifying
open
polyurethane foam
celled polyurethane
celled
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
GB7936110A
Other versions
GB2050395A (en
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.)
FOAM CUTTING ENG
Original Assignee
FOAM CUTTING ENG
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 claimed from US06/044,042 external-priority patent/US4228076A/en
Application filed by FOAM CUTTING ENG filed Critical FOAM CUTTING ENG
Publication of GB2050395A publication Critical patent/GB2050395A/en
Application granted granted Critical
Publication of GB2050395B publication Critical patent/GB2050395B/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
    • B29C44/56—After-treatment of articles, e.g. for altering the shape
    • B29C44/5627—After-treatment of articles, e.g. for altering the shape by mechanical deformation, e.g. crushing, embossing, stretching
    • B29C44/5636—After-treatment of articles, e.g. for altering the shape by mechanical deformation, e.g. crushing, embossing, stretching with the addition of heat

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
GB7936110A 1979-05-31 1979-10-17 Method of densifying open-celled polyurethane foam Expired GB2050395B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/044,042 US4228076A (en) 1978-02-10 1979-05-31 Method of densifying open-celled polyurethane material

Publications (2)

Publication Number Publication Date
GB2050395A GB2050395A (en) 1981-01-07
GB2050395B true GB2050395B (en) 1983-03-16

Family

ID=21930208

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7936110A Expired GB2050395B (en) 1979-05-31 1979-10-17 Method of densifying open-celled polyurethane foam

Country Status (3)

Country Link
CA (1) CA1120223A (en)
DE (1) DE2943859C2 (en)
GB (1) GB2050395B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4357859A (en) * 1981-04-08 1982-11-09 United Technologies Corporation Pressure sensor
DE3625818A1 (en) * 1986-07-30 1988-02-04 Irbit Research & Consulting Ag Process and device for producing mouldings
AT401268B (en) * 1992-10-15 1996-07-25 Greiner & Soehne C A FOAM ELEMENT, ESPECIALLY MOLDED PART FROM ONE OR MORE PLATES OF FOAM, AND METHOD FOR THE PRODUCTION THEREOF
DE102006032830A1 (en) * 2006-07-14 2008-01-17 Schmidt & Heinzmann Gmbh & Co. Kg Device for transporting a material strand

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3475525A (en) * 1966-09-22 1969-10-28 Timothy V Peters Process of reticulating polyurethane foams
US3577519A (en) * 1968-11-29 1971-05-04 Olin Mathieson Process for controlling the amount of densification in polyurethane foams and products produced thereby

Also Published As

Publication number Publication date
DE2943859C2 (en) 1987-05-07
DE2943859A1 (en) 1980-12-04
CA1120223A (en) 1982-03-23
GB2050395A (en) 1981-01-07

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee