FR2280494A1 - Cont conversion of foaming resin to a rect cross section profile - by enclosure with moving papers and an overhead plate - Google Patents

Cont conversion of foaming resin to a rect cross section profile - by enclosure with moving papers and an overhead plate

Info

Publication number
FR2280494A1
FR2280494A1 FR7427210A FR7427210A FR2280494A1 FR 2280494 A1 FR2280494 A1 FR 2280494A1 FR 7427210 A FR7427210 A FR 7427210A FR 7427210 A FR7427210 A FR 7427210A FR 2280494 A1 FR2280494 A1 FR 2280494A1
Authority
FR
France
Prior art keywords
foam
conversion
rising
rect
cont
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.)
Granted
Application number
FR7427210A
Other languages
French (fr)
Other versions
FR2280494B1 (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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7427210A priority Critical patent/FR2280494A1/en
Publication of FR2280494A1 publication Critical patent/FR2280494A1/en
Application granted granted Critical
Publication of FR2280494B1 publication Critical patent/FR2280494B1/fr
Granted 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
    • B29C44/36—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
    • B29C44/461—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length dispensing apparatus, e.g. dispensing foaming resin over the whole width of the moving surface
    • 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
    • B29C44/467—Foam spreading or levelling devices

Landscapes

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

Abstract

Equipment for producing continuous, foamed resin with a rectangular cross-section, conveys the rising foam beneath a pressure plate which causes the foam surface to deploy laterally instead of rising as a domed crust. The equipment includes a traversing nozzle for dispensing the foam forming mixt. uniformly across a moving conveyor. The foam is contd. between moving papers or films which enclose the sides and top of the rising foam. Conversion of all foam to a flat topped profile with sharply defined corners eliminates use of overhead trimming equipment and matl. losses of 10-15% associated with open-topped foam prodn. processes.
FR7427210A 1974-07-31 1974-07-31 Cont conversion of foaming resin to a rect cross section profile - by enclosure with moving papers and an overhead plate Granted FR2280494A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7427210A FR2280494A1 (en) 1974-07-31 1974-07-31 Cont conversion of foaming resin to a rect cross section profile - by enclosure with moving papers and an overhead plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7427210A FR2280494A1 (en) 1974-07-31 1974-07-31 Cont conversion of foaming resin to a rect cross section profile - by enclosure with moving papers and an overhead plate

Publications (2)

Publication Number Publication Date
FR2280494A1 true FR2280494A1 (en) 1976-02-27
FR2280494B1 FR2280494B1 (en) 1976-12-31

Family

ID=9142144

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7427210A Granted FR2280494A1 (en) 1974-07-31 1974-07-31 Cont conversion of foaming resin to a rect cross section profile - by enclosure with moving papers and an overhead plate

Country Status (1)

Country Link
FR (1) FR2280494A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3354503A (en) * 1964-04-02 1967-11-28 Gen Tire & Rubber Co Urethane foaming apparatus
FR2085391A1 (en) * 1970-04-16 1971-12-24 Rhone Poulenc Sa

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3354503A (en) * 1964-04-02 1967-11-28 Gen Tire & Rubber Co Urethane foaming apparatus
FR2085391A1 (en) * 1970-04-16 1971-12-24 Rhone Poulenc Sa

Also Published As

Publication number Publication date
FR2280494B1 (en) 1976-12-31

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Legal Events

Date Code Title Description
ST Notification of lapse