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CA995420A - Extruding foamable resin with expansion zone having plane and convex surfaces - Google Patents

Extruding foamable resin with expansion zone having plane and convex surfaces

Info

Publication number
CA995420A
CA995420A CA143,809A CA143809A CA995420A CA 995420 A CA995420 A CA 995420A CA 143809 A CA143809 A CA 143809A CA 995420 A CA995420 A CA 995420A
Authority
CA
Canada
Prior art keywords
plane
convex surfaces
foamable resin
expansion zone
extruding foamable
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
CA143,809A
Other versions
CA143809S (en
Inventor
Durgacharan Sen
Keith Marchant
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.)
Monsanto Ltd
Original Assignee
Monsanto 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 Monsanto Ltd filed Critical Monsanto Ltd
Application granted granted Critical
Publication of CA995420A publication Critical patent/CA995420A/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
    • B29C44/28—Expanding the moulding material on continuous moving surfaces without restricting the upwards growth of the foam
    • 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
    • B29C44/36—Feeding the material to be shaped
    • B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
    • B29C44/50—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying
    • B29C44/505—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying extruding the compound through a flat die
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets
CA143,809A 1971-06-01 1972-05-31 Extruding foamable resin with expansion zone having plane and convex surfaces Expired CA995420A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1835271A GB1366932A (en) 1971-06-01 1971-06-01 Extrusion of resins

Publications (1)

Publication Number Publication Date
CA995420A true CA995420A (en) 1976-08-24

Family

ID=10111003

Family Applications (1)

Application Number Title Priority Date Filing Date
CA143,809A Expired CA995420A (en) 1971-06-01 1972-05-31 Extruding foamable resin with expansion zone having plane and convex surfaces

Country Status (6)

Country Link
AU (1) AU472186B2 (en)
BE (1) BE784176R (en)
CA (1) CA995420A (en)
DE (1) DE2226596A1 (en)
FR (1) FR2140082B2 (en)
GB (1) GB1366932A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5569421A (en) * 1987-05-30 1996-10-29 Lin Tec Verpackungstechnik Gmbh Process for the production of a foldable blank of plastic foam by cold forming
DE3718300A1 (en) * 1987-05-30 1988-12-15 Lin Tec Gmbh Verpackung METHOD FOR PRODUCING PACKAGING FROM FOAM PLASTIC AND MATERIAL RAIL FOR THE FORMATION OF SUCH PACKAGING
DE10003808C2 (en) * 2000-01-28 2003-01-09 Gefinex Jackon Gmbh Surface embossing of plastic foam sheets

Also Published As

Publication number Publication date
FR2140082B2 (en) 1977-06-24
GB1366932A (en) 1974-09-18
BE784176R (en) 1972-11-30
AU472186B2 (en) 1974-01-17
FR2140082A2 (en) 1973-01-12
DE2226596A1 (en) 1972-12-28
AU4285372A (en) 1974-01-17

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