FR2116319A1 - Rod/tube extrusion - where cellular core and smooth skin materials are separate - Google Patents

Rod/tube extrusion - where cellular core and smooth skin materials are separate

Info

Publication number
FR2116319A1
FR2116319A1 FR7044866A FR7044866A FR2116319A1 FR 2116319 A1 FR2116319 A1 FR 2116319A1 FR 7044866 A FR7044866 A FR 7044866A FR 7044866 A FR7044866 A FR 7044866A FR 2116319 A1 FR2116319 A1 FR 2116319A1
Authority
FR
France
Prior art keywords
separate
rod
cellular core
skin materials
tube extrusion
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.)
Withdrawn
Application number
FR7044866A
Other languages
French (fr)
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 FR7044866A priority Critical patent/FR2116319A1/en
Priority to DE19712159786 priority patent/DE2159786A1/en
Publication of FR2116319A1 publication Critical patent/FR2116319A1/en
Withdrawn legal-status Critical Current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
    • B29C44/468—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length in a plurality of parallel streams which unite during the foaming

Landscapes

  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)

Abstract

The cellular material is allowed to expand on its way to the extrusion head while the skin material is held at a constant volume, until they are merged at extrusion for the skin and core to be bonded without air bubbles or distortion, and the extrusion profile held until cooled and hardened.
FR7044866A 1970-12-03 1970-12-03 Rod/tube extrusion - where cellular core and smooth skin materials are separate Withdrawn FR2116319A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7044866A FR2116319A1 (en) 1970-12-03 1970-12-03 Rod/tube extrusion - where cellular core and smooth skin materials are separate
DE19712159786 DE2159786A1 (en) 1970-12-03 1971-12-02 Method and device for the production of full or tubular profiles as well as profiles produced therefrom

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7044866A FR2116319A1 (en) 1970-12-03 1970-12-03 Rod/tube extrusion - where cellular core and smooth skin materials are separate

Publications (1)

Publication Number Publication Date
FR2116319A1 true FR2116319A1 (en) 1972-07-13

Family

ID=9065686

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7044866A Withdrawn FR2116319A1 (en) 1970-12-03 1970-12-03 Rod/tube extrusion - where cellular core and smooth skin materials are separate

Country Status (2)

Country Link
DE (1) DE2159786A1 (en)
FR (1) FR2116319A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2234433A1 (en) * 1973-06-19 1975-01-17 Coflacel Thermally insulated extruded thermoplastic sections - have expanded interior and hard, smooth outer skin

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2234433A1 (en) * 1973-06-19 1975-01-17 Coflacel Thermally insulated extruded thermoplastic sections - have expanded interior and hard, smooth outer skin

Also Published As

Publication number Publication date
DE2159786A1 (en) 1972-06-08

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Legal Events

Date Code Title Description
ST Notification of lapse