JPS57174372A - Manufacture of adhesive tape - Google Patents

Manufacture of adhesive tape

Info

Publication number
JPS57174372A
JPS57174372A JP5965581A JP5965581A JPS57174372A JP S57174372 A JPS57174372 A JP S57174372A JP 5965581 A JP5965581 A JP 5965581A JP 5965581 A JP5965581 A JP 5965581A JP S57174372 A JPS57174372 A JP S57174372A
Authority
JP
Japan
Prior art keywords
polyethylene terephthalate
drawing ratio
film
adhesive
coated
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
JP5965581A
Other languages
Japanese (ja)
Inventor
Takeshi Yokoyama
Hitoshi Murakami
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.)
Teijin Ltd
Original Assignee
Teijin 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 Teijin Ltd filed Critical Teijin Ltd
Priority to JP5965581A priority Critical patent/JPS57174372A/en
Publication of JPS57174372A publication Critical patent/JPS57174372A/en
Pending legal-status Critical Current

Links

Landscapes

  • Adhesive Tapes (AREA)

Abstract

PURPOSE: To obtain an adhesive tape having an impact strength high enough to withstand to be encountered during use, by a method in which an unstretched polyethylene terephthalate film is subjected to a biaxial stretching process at a specific drawing ratio and then coated with an adhesive.
CONSTITUTION: In stretching an unstretched polyethylene terephthalate in vertical and lateral directions, the film is subjected to a simultaneous or consecutive biaxial stretching process at a vertical drawing ratio of 3.2W3.75, a lateral drawing ratio of 3.0W3.6, and a whole area drawing ratio of 13.0 or less and at a temperature at which the refractive index in the thickness direction of the biaxially stretched polyethylene teraphthalate film is 1.491 or more. Then, an adhesive is coated on the surface of the biaxially stretched polyethylene terephthalate film. The polyethylene terephthalate used contains a copolymer having a repeating unit whose 85mol% or more is ethylene terephthalate unit and the balance of an acid or glycol component other than terephthalic acid or ethylene glycol.
COPYRIGHT: (C)1982,JPO&Japio
JP5965581A 1981-04-22 1981-04-22 Manufacture of adhesive tape Pending JPS57174372A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5965581A JPS57174372A (en) 1981-04-22 1981-04-22 Manufacture of adhesive tape

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5965581A JPS57174372A (en) 1981-04-22 1981-04-22 Manufacture of adhesive tape

Publications (1)

Publication Number Publication Date
JPS57174372A true JPS57174372A (en) 1982-10-27

Family

ID=13119430

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5965581A Pending JPS57174372A (en) 1981-04-22 1981-04-22 Manufacture of adhesive tape

Country Status (1)

Country Link
JP (1) JPS57174372A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5256140A (en) * 1975-11-05 1977-05-09 Teijin Ltd Adhesive tapes

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5256140A (en) * 1975-11-05 1977-05-09 Teijin Ltd Adhesive tapes

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