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FR2097634A5 - Plastic profiles - with expanded core and solid skin produced from a single extruder - Google Patents

Plastic profiles - with expanded core and solid skin produced from a single extruder

Info

Publication number
FR2097634A5
FR2097634A5 FR7026214A FR7026214A FR2097634A5 FR 2097634 A5 FR2097634 A5 FR 2097634A5 FR 7026214 A FR7026214 A FR 7026214A FR 7026214 A FR7026214 A FR 7026214A FR 2097634 A5 FR2097634 A5 FR 2097634A5
Authority
FR
France
Prior art keywords
single extruder
thermoplastic material
plastic profiles
expanded core
solid skin
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
FR7026214A
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.)
Societe Nationale des Petroles dAquitaine SA
Original Assignee
Societe Nationale des Petroles dAquitaine SA
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 Societe Nationale des Petroles dAquitaine SA filed Critical Societe Nationale des Petroles dAquitaine SA
Priority to FR7026214A priority Critical patent/FR2097634A5/en
Priority to LU63547D priority patent/LU63547A1/xx
Priority to BE770040A priority patent/BE770040A/en
Priority to DE19712135725 priority patent/DE2135725A1/en
Priority to IT4294871A priority patent/IT988412B/en
Application granted granted Critical
Publication of FR2097634A5 publication Critical patent/FR2097634A5/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
    • B29C44/36—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)

Abstract

Profiles are produced from a thermoplastic material contg. a blowing agent by dividing the flow of thermoplastic material from a single extruder into an exterior flow, which is subjected over at least a part of its path to cooling sufficiently intense to prevent the expansion of the thermoplastic material in this exterior flow, and an interior flow over whose path a pressure release enable the thermoplastic material to expand.
FR7026214A 1970-07-16 1970-07-16 Plastic profiles - with expanded core and solid skin produced from a single extruder Expired FR2097634A5 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR7026214A FR2097634A5 (en) 1970-07-16 1970-07-16 Plastic profiles - with expanded core and solid skin produced from a single extruder
LU63547D LU63547A1 (en) 1970-07-16 1971-07-15
BE770040A BE770040A (en) 1970-07-16 1971-07-15 METHOD AND DEVICE FOR MANUFACTURING PROFILES IN LIGHT THERMOPLASTIC MATERIAL
DE19712135725 DE2135725A1 (en) 1970-07-16 1971-07-16 Plastic profiles - with expanded core and solid skin produced from a single extruder
IT4294871A IT988412B (en) 1970-07-16 1971-07-16 PROCEDURE AND DEVICE FOR MANUFACTURING PROFILES IN LIGHTENED THERMOPLASTIC MATERIALS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7026214A FR2097634A5 (en) 1970-07-16 1970-07-16 Plastic profiles - with expanded core and solid skin produced from a single extruder

Publications (1)

Publication Number Publication Date
FR2097634A5 true FR2097634A5 (en) 1972-03-03

Family

ID=9058753

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7026214A Expired FR2097634A5 (en) 1970-07-16 1970-07-16 Plastic profiles - with expanded core and solid skin produced from a single extruder

Country Status (1)

Country Link
FR (1) FR2097634A5 (en)

Cited By (2)

* 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
CN108237673A (en) * 2017-12-22 2018-07-03 风神轮胎股份有限公司 A kind of novel Ba Jin shape of the mouth as one speaks

Cited By (2)

* 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
CN108237673A (en) * 2017-12-22 2018-07-03 风神轮胎股份有限公司 A kind of novel Ba Jin shape of the mouth as one speaks

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Legal Events

Date Code Title Description
CD Change of name or company name
ST Notification of lapse