JPS5565522A - Stretching of thermoplastic resin - Google Patents

Stretching of thermoplastic resin

Info

Publication number
JPS5565522A
JPS5565522A JP13812678A JP13812678A JPS5565522A JP S5565522 A JPS5565522 A JP S5565522A JP 13812678 A JP13812678 A JP 13812678A JP 13812678 A JP13812678 A JP 13812678A JP S5565522 A JPS5565522 A JP S5565522A
Authority
JP
Japan
Prior art keywords
film
stretching
width
heater
thermoplastic resin
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
JP13812678A
Other languages
Japanese (ja)
Inventor
Kazuo Matsukura
Noboru Yamada
Kunio Murakami
Tsugio Nagasawa
Tadashi Hayashi
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.)
Unitika Ltd
Original Assignee
Unitika 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 Unitika Ltd filed Critical Unitika Ltd
Priority to JP13812678A priority Critical patent/JPS5565522A/en
Publication of JPS5565522A publication Critical patent/JPS5565522A/en
Pending legal-status Critical Current

Links

Landscapes

  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

PURPOSE: To improve final appearance of a product by generating temperature spots in arbitrary portions along the width of a thermoplastic resin film and thereby make the film thickness irregular and then stretching the film.
CONSTITUTION: A thermoplastic resin film such as of polyester resin or polyamid resin which has been fusion extruded in stretched uniaxially in lateral direction or biaxially in lateral and longitudinal directions by the tenter method. In this case, a heater or cooler travellable at an arbitrary speed along the width of the film is arranged, in addition to a normal heater, in a stretching zone or preheating zone. Air at a temperature higher or lower than that of the normal heating hot air by about 20°C is blown off from the heater or cooler, to generate irregular temperature spots in arbitrary portions along the width of the film and thereby to make irregular the thickness of the film after stretching.
COPYRIGHT: (C)1980,JPO&Japio
JP13812678A 1978-11-08 1978-11-08 Stretching of thermoplastic resin Pending JPS5565522A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13812678A JPS5565522A (en) 1978-11-08 1978-11-08 Stretching of thermoplastic resin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13812678A JPS5565522A (en) 1978-11-08 1978-11-08 Stretching of thermoplastic resin

Publications (1)

Publication Number Publication Date
JPS5565522A true JPS5565522A (en) 1980-05-17

Family

ID=15214574

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13812678A Pending JPS5565522A (en) 1978-11-08 1978-11-08 Stretching of thermoplastic resin

Country Status (1)

Country Link
JP (1) JPS5565522A (en)

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