JPS5554346A - Biaxially oriented polyethylene terephthalate film - Google Patents

Biaxially oriented polyethylene terephthalate film

Info

Publication number
JPS5554346A
JPS5554346A JP12648478A JP12648478A JPS5554346A JP S5554346 A JPS5554346 A JP S5554346A JP 12648478 A JP12648478 A JP 12648478A JP 12648478 A JP12648478 A JP 12648478A JP S5554346 A JPS5554346 A JP S5554346A
Authority
JP
Japan
Prior art keywords
pref
powder
silica
biaxially oriented
polyethylene terephthalate
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
JP12648478A
Other languages
Japanese (ja)
Other versions
JPS6056607B2 (en
Inventor
Takeshi Hongo
Tetsushi Murakami
Hikoichi Nagano
Atsushi Ikegami
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.)
Toyobo Co Ltd
Original Assignee
Toyobo 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 Toyobo Co Ltd filed Critical Toyobo Co Ltd
Priority to JP12648478A priority Critical patent/JPS6056607B2/en
Publication of JPS5554346A publication Critical patent/JPS5554346A/en
Publication of JPS6056607B2 publication Critical patent/JPS6056607B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

PURPOSE:To prepare the title film having excellent transparency and slipperiness, from a polyethylene terephthalate composition compounded with a specific amount of specially treated silica fine powder. CONSTITUTION:(A) A polyester composed of pref. >=90wt% of ethylene terephthalate unit is mixed with (B) 0.01-3 (pref. 0.025-0.5)wt%, based on (A), of silica powder having particle diameter of 0.01-10mu and treated with polyolefin (pref. polyethylene or polypropylene) wax, extruded to a sheet, and biaxially oriented to the longitudinal and the transverse directions at draw ratios of >=3. The addition of the silica powder to the polyester is pref. carried out by slurrifying the silica in ethlene glycol, and adding the slurry during the polymerization. EFFECT:Secondary agglomeration of the powder is prevented.
JP12648478A 1978-10-14 1978-10-14 Biaxially oriented polyethylene terephthalate film Expired JPS6056607B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12648478A JPS6056607B2 (en) 1978-10-14 1978-10-14 Biaxially oriented polyethylene terephthalate film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12648478A JPS6056607B2 (en) 1978-10-14 1978-10-14 Biaxially oriented polyethylene terephthalate film

Publications (2)

Publication Number Publication Date
JPS5554346A true JPS5554346A (en) 1980-04-21
JPS6056607B2 JPS6056607B2 (en) 1985-12-11

Family

ID=14936342

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12648478A Expired JPS6056607B2 (en) 1978-10-14 1978-10-14 Biaxially oriented polyethylene terephthalate film

Country Status (1)

Country Link
JP (1) JPS6056607B2 (en)

Also Published As

Publication number Publication date
JPS6056607B2 (en) 1985-12-11

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