JPS5593425A - Method and device for manufacturing thermo plastic, tubular film, elongated in one axis - Google Patents

Method and device for manufacturing thermo plastic, tubular film, elongated in one axis

Info

Publication number
JPS5593425A
JPS5593425A JP36579A JP36579A JPS5593425A JP S5593425 A JPS5593425 A JP S5593425A JP 36579 A JP36579 A JP 36579A JP 36579 A JP36579 A JP 36579A JP S5593425 A JPS5593425 A JP S5593425A
Authority
JP
Japan
Prior art keywords
elongated
tubular film
film
mandrel
thermo plastic
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
JP36579A
Other languages
Japanese (ja)
Other versions
JPS6236857B2 (en
Inventor
Katsumi Okuyama
Hiroyasu Mizutani
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.)
Mitsubishi Chemical Corp
Original Assignee
Mitsubishi Petrochemical 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 Mitsubishi Petrochemical Co Ltd filed Critical Mitsubishi Petrochemical Co Ltd
Priority to JP36579A priority Critical patent/JPS5593425A/en
Publication of JPS5593425A publication Critical patent/JPS5593425A/en
Publication of JPS6236857B2 publication Critical patent/JPS6236857B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

PURPOSE:To manufacture a captioned film having an uniform thickness in longitudinally and circumferentially by a method wherein a beginning point of elongation in a longitudinal direction is fixed at a constant position and thereby a generation of ununiform necking in a circumferential direction of a tubular film not yet elongated is prevented. CONSTITUTION:A thermo plastic molten film F1 is cooled on an air ring 2 and a cooling mandrel 3 under being inflated by an air pressure from air pipings a1-3, and is changed into a tubular film F2 not yet elongated. The film F2 is heated on a preheating mandrel 5 through a low-speed nipple roll 4 and becomes to be a tubular film F3 not yet elongated, subsequently, is elongated along its longitudinal axis between a cylindrical mandrel 6 and a high-speed nipple roll 9. In this case, transmission of an elongating force is controlled by a vacuum pressure of slits V1, V2 for the cylindrical mandrel 6, thereby, a contracting force in a circumferential direction is reduced, while a begining point of elongation is fixed and uniformed by fixing at a constant position on a terminal portion of a peripheral wall of the cylindrical mandrel 6, further, an internal pressure of the elongated tubular film F4 is being controlled, therefor, a thermo plastic, tubular film, elongated in one axis and having an uniform thickness, may be obtained.
JP36579A 1979-01-09 1979-01-09 Method and device for manufacturing thermo plastic, tubular film, elongated in one axis Granted JPS5593425A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP36579A JPS5593425A (en) 1979-01-09 1979-01-09 Method and device for manufacturing thermo plastic, tubular film, elongated in one axis

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP36579A JPS5593425A (en) 1979-01-09 1979-01-09 Method and device for manufacturing thermo plastic, tubular film, elongated in one axis

Publications (2)

Publication Number Publication Date
JPS5593425A true JPS5593425A (en) 1980-07-15
JPS6236857B2 JPS6236857B2 (en) 1987-08-10

Family

ID=11471760

Family Applications (1)

Application Number Title Priority Date Filing Date
JP36579A Granted JPS5593425A (en) 1979-01-09 1979-01-09 Method and device for manufacturing thermo plastic, tubular film, elongated in one axis

Country Status (1)

Country Link
JP (1) JPS5593425A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1195235A3 (en) * 2000-10-03 2003-11-12 Viskase Corporation Method and apparatus for use in manufacture of cellulose casing

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5180365A (en) * 1975-01-06 1976-07-13 Mitsui Petrochemical Ind
JPS5318072A (en) * 1976-08-03 1978-02-18 Fujikoshi Kk Tool for cutting rapping plate
JPS5338306A (en) * 1976-09-20 1978-04-08 Hitachi Maxell Magnetic recording material

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5180365A (en) * 1975-01-06 1976-07-13 Mitsui Petrochemical Ind
JPS5318072A (en) * 1976-08-03 1978-02-18 Fujikoshi Kk Tool for cutting rapping plate
JPS5338306A (en) * 1976-09-20 1978-04-08 Hitachi Maxell Magnetic recording material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1195235A3 (en) * 2000-10-03 2003-11-12 Viskase Corporation Method and apparatus for use in manufacture of cellulose casing

Also Published As

Publication number Publication date
JPS6236857B2 (en) 1987-08-10

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