JPS6411820A - Easily foldable polyester film - Google Patents
Easily foldable polyester filmInfo
- Publication number
- JPS6411820A JPS6411820A JP16824587A JP16824587A JPS6411820A JP S6411820 A JPS6411820 A JP S6411820A JP 16824587 A JP16824587 A JP 16824587A JP 16824587 A JP16824587 A JP 16824587A JP S6411820 A JPS6411820 A JP S6411820A
- Authority
- JP
- Japan
- Prior art keywords
- film
- copolymer
- biaxially stretched
- difference
- mean refractive
- 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)
Abstract
PURPOSE:To obtain excellent easy foldability and dimensional stability by a method wherein film, which is made of polyethylene terephthalate copolymer and has a yield point and the difference between mean refractive indices in unstretched state and in biaxially stretched state of which is set to lie within the specified range. CONSTITUTION:The easily foldable polyester film concerned is a biaxially stretched film, which is made of polyethylene terephthalate (PET) copolymer and has a yield point in a stress-strain curve and satisfies the following relationship: 0.003<=N1-N0<=0.021, in which N0 denotes the mean refractive index of the unstretched film made of said copolymer and N1 denotes the mean refractive index of the biaxially stretched film made of said copolymer. If the difference between the refractive indices is smaller than 0.003, the orientation of the resultant film is not enough, resulting in being apt to fall behind in strength and heat resistance. On the other hand, if said difference is larger than 0.021, nearly no improvement in the easy foldability of film is obtained an unfavorable film results. Further, as the PET copolymer, copolymer, the crystallization of which is comparatively difficult, such as isophthalic acid copolymer, is apt to show higher easy moldability when processed in a biaxially stretched film.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16824587A JP2505474B2 (en) | 1987-07-06 | 1987-07-06 | Easy folding polyester film |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16824587A JP2505474B2 (en) | 1987-07-06 | 1987-07-06 | Easy folding polyester film |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6411820A true JPS6411820A (en) | 1989-01-17 |
JP2505474B2 JP2505474B2 (en) | 1996-06-12 |
Family
ID=15864449
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16824587A Expired - Lifetime JP2505474B2 (en) | 1987-07-06 | 1987-07-06 | Easy folding polyester film |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2505474B2 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02204020A (en) * | 1989-02-01 | 1990-08-14 | Diafoil Co Ltd | Biaxially stretched polyester film for forming, formed-transferring film and formed container |
EP0386450A2 (en) * | 1989-02-01 | 1990-09-12 | Diafoil Hoechst Co., Ltd | Moldable biaxially stretched polyester film |
JPH08132523A (en) * | 1994-11-09 | 1996-05-28 | Toray Ind Inc | Low heat-shrinkable polyester film |
JPH08164558A (en) * | 1994-12-15 | 1996-06-25 | Toray Ind Inc | Polyester film |
KR100541230B1 (en) * | 2001-12-11 | 2006-01-10 | 에스케이씨 주식회사 | Biaxially oriented polyester film |
JP2007069521A (en) * | 2005-09-08 | 2007-03-22 | Toyobo Co Ltd | Manufacturing method of biaxially stretched polyester film for twist wrapping |
JP2007069523A (en) * | 2005-09-08 | 2007-03-22 | Toyobo Co Ltd | Manufacturing method of biaxially stretched polyester film for twist wrapping |
JP7029021B1 (en) * | 2020-10-30 | 2022-03-02 | タキロンシーアイ株式会社 | Polyester shrink film |
-
1987
- 1987-07-06 JP JP16824587A patent/JP2505474B2/en not_active Expired - Lifetime
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02204020A (en) * | 1989-02-01 | 1990-08-14 | Diafoil Co Ltd | Biaxially stretched polyester film for forming, formed-transferring film and formed container |
EP0386450A2 (en) * | 1989-02-01 | 1990-09-12 | Diafoil Hoechst Co., Ltd | Moldable biaxially stretched polyester film |
JPH08132523A (en) * | 1994-11-09 | 1996-05-28 | Toray Ind Inc | Low heat-shrinkable polyester film |
JPH08164558A (en) * | 1994-12-15 | 1996-06-25 | Toray Ind Inc | Polyester film |
KR100541230B1 (en) * | 2001-12-11 | 2006-01-10 | 에스케이씨 주식회사 | Biaxially oriented polyester film |
JP2007069521A (en) * | 2005-09-08 | 2007-03-22 | Toyobo Co Ltd | Manufacturing method of biaxially stretched polyester film for twist wrapping |
JP2007069523A (en) * | 2005-09-08 | 2007-03-22 | Toyobo Co Ltd | Manufacturing method of biaxially stretched polyester film for twist wrapping |
JP7029021B1 (en) * | 2020-10-30 | 2022-03-02 | タキロンシーアイ株式会社 | Polyester shrink film |
WO2022091355A1 (en) * | 2020-10-30 | 2022-05-05 | タキロンシーアイ株式会社 | Polyester-based shrink film |
Also Published As
Publication number | Publication date |
---|---|
JP2505474B2 (en) | 1996-06-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS6411820A (en) | Easily foldable polyester film | |
JPS6422530A (en) | Polyester film for pasting to metal | |
JPS5522915A (en) | Manufacture of polyester film | |
JPS5742726A (en) | Polyester film for shrink packaging | |
JPS57189822A (en) | Biaxially stretched polyester film | |
CA2160153A1 (en) | Multilayer film structure | |
JPS644326A (en) | Heat-shrinkable polyester film | |
JPS57189823A (en) | Production of polyester film | |
JPS6445699A (en) | Heat-resistant polyester film for transfer film | |
EP0135815A3 (en) | Biaxially oriented polyamide film | |
JPS54135860A (en) | Manufacturing of laminate film | |
JPS56149455A (en) | Antistatic polyester film | |
ES2075343T3 (en) | HIGH CLARITY AND BRIGHTNESS ORIENTED FILM. | |
JPS562342A (en) | Hollow vessel made of polyester resin | |
JPS54153898A (en) | Polyester film | |
JPS644325A (en) | Heat-shrinkable polyester film | |
JPS6440400A (en) | Polyester film for transfer film | |
JPS5691009A (en) | Polyester fiber for reinforcing rubber composite | |
JPS5642629A (en) | Biaxially-stretched polyester film for photograph | |
JPS5651329A (en) | Manufacture of tempered polypropylene film | |
JPS5630827A (en) | Preparation of ethylene-vinyl alcoholic copolymer film | |
JPS5634428A (en) | Preparation of stretched film of polycarbonate | |
JPS5544815A (en) | Preparation for polyester hollow container | |
JPS5537305A (en) | Production of high-strength polyester film | |
JPS57125246A (en) | Polyester vessel and its preparation |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term | ||
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080402 Year of fee payment: 12 |