JPS5610431A - Curing period shortening method for synthetic resin foamed sheet - Google Patents

Curing period shortening method for synthetic resin foamed sheet

Info

Publication number
JPS5610431A
JPS5610431A JP8532579A JP8532579A JPS5610431A JP S5610431 A JPS5610431 A JP S5610431A JP 8532579 A JP8532579 A JP 8532579A JP 8532579 A JP8532579 A JP 8532579A JP S5610431 A JPS5610431 A JP S5610431A
Authority
JP
Japan
Prior art keywords
synthetic resin
sheet
curing period
roll
carried out
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
JP8532579A
Other languages
Japanese (ja)
Inventor
Tomokazu Morimoto
Fumio Yamaguchi
Shunji Kitamura
Akira Amo
Koji Koshiyama
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.)
TOCHIGI KANEKA KK
Original Assignee
TOCHIGI KANEKA KK
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 TOCHIGI KANEKA KK filed Critical TOCHIGI KANEKA KK
Priority to JP8532579A priority Critical patent/JPS5610431A/en
Publication of JPS5610431A publication Critical patent/JPS5610431A/en
Pending legal-status Critical Current

Links

Landscapes

  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE: To decrease the dispersion of expansion ratio at each point on a rolled product of the foamed sheet and the like and shorten its curing period by a method wherein rugged portions formed on the surface of the foamed sheet made by extruding and molding a mixture of synthetic resin and foaming agent.
CONSTITUTION: When the mixture of a synthetic resin (ex.; polystylene etc.) and a foaming agent (ex.; freon-12 etc.) is heated and knead in an extruder, extruded in a sheet form and wound in a roll or cut in a specified dimension and stacked, treatments, for example, such as embossing etc. are carried out on the surface of the foamed sythetic resin sheet extruded from the die to form the rugged portions on the surface and to shorten the curing period.
EFFECT: When the rugged portions are formed on the surface, spaces appear though the sheet is rolled. Even in the central part of the roll, the secondary expansion ratio approximate to the external circumferential part (dotted line) of the roll is obtained in a short time when the treatment is carried out (▵ mark) comparing with when treatment is not carried out (× mark).
COPYRIGHT: (C)1981,JPO&Japio
JP8532579A 1979-07-05 1979-07-05 Curing period shortening method for synthetic resin foamed sheet Pending JPS5610431A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8532579A JPS5610431A (en) 1979-07-05 1979-07-05 Curing period shortening method for synthetic resin foamed sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8532579A JPS5610431A (en) 1979-07-05 1979-07-05 Curing period shortening method for synthetic resin foamed sheet

Publications (1)

Publication Number Publication Date
JPS5610431A true JPS5610431A (en) 1981-02-02

Family

ID=13855465

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8532579A Pending JPS5610431A (en) 1979-07-05 1979-07-05 Curing period shortening method for synthetic resin foamed sheet

Country Status (1)

Country Link
JP (1) JPS5610431A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0480612U (en) * 1990-11-16 1992-07-14

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0480612U (en) * 1990-11-16 1992-07-14

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