FR2092000A1 - Extruding hard thermoplastic foam - Google Patents

Extruding hard thermoplastic foam

Info

Publication number
FR2092000A1
FR2092000A1 FR7111771A FR7111771A FR2092000A1 FR 2092000 A1 FR2092000 A1 FR 2092000A1 FR 7111771 A FR7111771 A FR 7111771A FR 7111771 A FR7111771 A FR 7111771A FR 2092000 A1 FR2092000 A1 FR 2092000A1
Authority
FR
France
Prior art keywords
thermoplastic foam
hard thermoplastic
extruding hard
extruding
nozzle
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
FR7111771A
Other languages
French (fr)
Other versions
FR2092000B1 (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.)
Asahi Dow Ltd
Original Assignee
Asahi Dow 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
Priority claimed from JP45075953A external-priority patent/JPS496538B1/ja
Application filed by Asahi Dow Ltd filed Critical Asahi Dow Ltd
Publication of FR2092000A1 publication Critical patent/FR2092000A1/en
Application granted granted Critical
Publication of FR2092000B1 publication Critical patent/FR2092000B1/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
    • B29C44/50—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

Landscapes

  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

Thermoplastic containing expanding agent is gradually densified before leaving wide-slot nozzle, by flowing between cold converging surfaces. The surfaces, directly after the nozzle, which determine the extruded thickness are cooled by blow coolant. The strip is pressed, after foaming, to the desired thickness and further cooled.
FR7111771A 1970-04-03 1971-04-02 Extruding hard thermoplastic foam Granted FR2092000A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2787270 1970-04-03
JP3403970 1970-04-10
JP45075953A JPS496538B1 (en) 1970-09-01 1970-09-01

Publications (2)

Publication Number Publication Date
FR2092000A1 true FR2092000A1 (en) 1972-01-21
FR2092000B1 FR2092000B1 (en) 1974-03-22

Family

ID=27285982

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7111771A Granted FR2092000A1 (en) 1970-04-03 1971-04-02 Extruding hard thermoplastic foam

Country Status (3)

Country Link
CA (1) CA980522A (en)
DE (1) DE2116239B2 (en)
FR (1) FR2092000A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0040824A2 (en) * 1980-05-23 1981-12-02 SMAE-SOCIETA' MERIDIONALE ACCESSORI ELASTOMERICI S.p.A Process for continuously manufacturing bi-compound shaped articles and the bi-compound shaped articles so obtained
EP0476798A2 (en) * 1990-09-17 1992-03-25 The Furukawa Electric Co., Ltd. Method and apparatus for manufacturing a cross-linked thermoplastic resin foam

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013103758B4 (en) * 2013-04-15 2017-03-02 Veka Ag Process for producing a thermoplastic foam board and air cooling device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NEANT *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0040824A2 (en) * 1980-05-23 1981-12-02 SMAE-SOCIETA' MERIDIONALE ACCESSORI ELASTOMERICI S.p.A Process for continuously manufacturing bi-compound shaped articles and the bi-compound shaped articles so obtained
EP0040824A3 (en) * 1980-05-23 1982-04-28 Smae-Societa' Meridionale Accessori Elastomerici S.P.A Process for continuously manufacturing bi-compound shaped articles and the bi-compound shaped articles so obtained
EP0476798A2 (en) * 1990-09-17 1992-03-25 The Furukawa Electric Co., Ltd. Method and apparatus for manufacturing a cross-linked thermoplastic resin foam
EP0476798A3 (en) * 1990-09-17 1992-04-15 The Furukawa Electric Co., Ltd. Method and apparatus for manufacturing a cross-linked thermoplastic resin foam

Also Published As

Publication number Publication date
CA980522A (en) 1975-12-30
DE2116239A1 (en) 1971-11-04
DE2116239B2 (en) 1977-07-07
FR2092000B1 (en) 1974-03-22

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Legal Events

Date Code Title Description
ST Notification of lapse