JPS5554346A - Biaxially oriented polyethylene terephthalate film - Google Patents
Biaxially oriented polyethylene terephthalate filmInfo
- 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
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.
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) |
-
1978
- 1978-10-14 JP JP12648478A patent/JPS6056607B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS6056607B2 (en) | 1985-12-11 |
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