FR2427898A1 - Procede de fabrication d'articles par co-extrusion - Google Patents

Procede de fabrication d'articles par co-extrusion

Info

Publication number
FR2427898A1
FR2427898A1 FR7817395A FR7817395A FR2427898A1 FR 2427898 A1 FR2427898 A1 FR 2427898A1 FR 7817395 A FR7817395 A FR 7817395A FR 7817395 A FR7817395 A FR 7817395A FR 2427898 A1 FR2427898 A1 FR 2427898A1
Authority
FR
France
Prior art keywords
plastic
extrusion
sandwich structure
mfr
core
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
FR7817395A
Other languages
English (en)
Other versions
FR2427898B1 (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 FR7817395A priority Critical patent/FR2427898A1/fr
Publication of FR2427898A1 publication Critical patent/FR2427898A1/fr
Application granted granted Critical
Publication of FR2427898B1 publication Critical patent/FR2427898B1/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
    • B29C44/20—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
    • B29C44/22—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 consisting of at least two parts of chemically or physically different materials, e.g. having different densities
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/06—Rod-shaped
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/304—Extrusion nozzles or dies specially adapted for bringing together components, e.g. melts within the die
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)

Abstract

Procédé de fabrication d'un objet co-extrudé. On mélange des ingrédients pour une matière plastique cellulaire y compris un agent moussant et une matiere plastique à l'etat plastique, pour former une âme à une température prédéterminée, on mélange d'autres ingrédients pour au moins une matière plastique pleine à l'état plastique à une température différente de la précédente température déterminée d'au moins 14 degrés centigrades, pour former une peau sur l'âme, et on co-extrude ensuite simultanément la matière plastique cellulaire et la matière plastique pleine à travers une filière. Application aux éléments de construction du type sandwich, à âme et peaux.
FR7817395A 1978-06-09 1978-06-09 Procede de fabrication d'articles par co-extrusion Granted FR2427898A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7817395A FR2427898A1 (fr) 1978-06-09 1978-06-09 Procede de fabrication d'articles par co-extrusion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7817395A FR2427898A1 (fr) 1978-06-09 1978-06-09 Procede de fabrication d'articles par co-extrusion

Publications (2)

Publication Number Publication Date
FR2427898A1 true FR2427898A1 (fr) 1980-01-04
FR2427898B1 FR2427898B1 (fr) 1983-08-12

Family

ID=9209333

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7817395A Granted FR2427898A1 (fr) 1978-06-09 1978-06-09 Procede de fabrication d'articles par co-extrusion

Country Status (1)

Country Link
FR (1) FR2427898A1 (fr)

Also Published As

Publication number Publication date
FR2427898B1 (fr) 1983-08-12

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Legal Events

Date Code Title Description
TP Transmission of property