JPS57126630A - Manufacture of thermoplastic resin foamed sheet - Google Patents

Manufacture of thermoplastic resin foamed sheet

Info

Publication number
JPS57126630A
JPS57126630A JP56012695A JP1269581A JPS57126630A JP S57126630 A JPS57126630 A JP S57126630A JP 56012695 A JP56012695 A JP 56012695A JP 1269581 A JP1269581 A JP 1269581A JP S57126630 A JPS57126630 A JP S57126630A
Authority
JP
Japan
Prior art keywords
foaming
heating furnace
sheet
heated
hot air
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.)
Pending
Application number
JP56012695A
Other languages
Japanese (ja)
Inventor
Yoshiharu Matsumura
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.)
Furukawa Electric Co Ltd
Original Assignee
Furukawa Electric Co 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
Application filed by Furukawa Electric Co Ltd filed Critical Furukawa Electric Co Ltd
Priority to JP56012695A priority Critical patent/JPS57126630A/en
Publication of JPS57126630A publication Critical patent/JPS57126630A/en
Pending 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
    • B29C44/56—After-treatment of articles, e.g. for altering the shape

Abstract

PURPOSE:To manufacture the titled sheet in a short time efficiently by a method wherein the sheet is heated quickly in an infrared heating furnace until foaming begins and is heated slowly in a hot air heating furnace after foaming has begun. CONSTITUTION:Until foaming begins, a foaming thermoplastic resin sheet (ex; sheet composed of polyethylene etc., foaming agent like diazocarbonamide etc. and crosslinking agent like dicumyl peroxide etc.) is heated in an infrared heating furnace in which a radiating plate is provided to generate infrared rays and said radiating plate is higher in temperature than a hot air heating furnace and which is slightly lower in temperature in both edge parts along the longitudinal direction than in the central part and from the beginning of foaming until the end thereof said sheet is heated in the hot air heating furnace.
JP56012695A 1981-01-30 1981-01-30 Manufacture of thermoplastic resin foamed sheet Pending JPS57126630A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56012695A JPS57126630A (en) 1981-01-30 1981-01-30 Manufacture of thermoplastic resin foamed sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56012695A JPS57126630A (en) 1981-01-30 1981-01-30 Manufacture of thermoplastic resin foamed sheet

Publications (1)

Publication Number Publication Date
JPS57126630A true JPS57126630A (en) 1982-08-06

Family

ID=11812510

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56012695A Pending JPS57126630A (en) 1981-01-30 1981-01-30 Manufacture of thermoplastic resin foamed sheet

Country Status (1)

Country Link
JP (1) JPS57126630A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014019768A (en) * 2012-07-17 2014-02-03 Sekisui Chem Co Ltd Method and device of producing thermoplastic resin foam

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014019768A (en) * 2012-07-17 2014-02-03 Sekisui Chem Co Ltd Method and device of producing thermoplastic resin foam

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