JPS6416650A - Packaging material - Google Patents
Packaging materialInfo
- Publication number
- JPS6416650A JPS6416650A JP17343787A JP17343787A JPS6416650A JP S6416650 A JPS6416650 A JP S6416650A JP 17343787 A JP17343787 A JP 17343787A JP 17343787 A JP17343787 A JP 17343787A JP S6416650 A JPS6416650 A JP S6416650A
- Authority
- JP
- Japan
- Prior art keywords
- copolymer
- biaxially oriented
- pet
- oriented film
- packaging material
- 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
- Wrappers (AREA)
- Laminated Bodies (AREA)
Abstract
PURPOSE:To improve the folding property of a packaging material after breaking the seal thereof, by laminating a specified biaxially oriented film and a heat seal layer. CONSTITUTION:A heat seal layer is provided on one side of a biaxially oriented film, consisting of the copolymer of polyethylene terephthalate having a yield point in the stress-strain curve thereof and satisfying the relation of 0.003<=N1-N0<=0.021 when the average indexes of refract ion of unoriented film and biaxially oriented film are shown by No, N1. The PET unit of the copolymer of polyethylene terephthalate (PET) is preferably 70-95mole%. The copolymer of PET or the copolymer of isophthalic acid, for example, which is hard to crystallize comparatively, is preferable. According to this method, the folding property of the material is prominent and heat seal can be effected, therefore, the operability of the packaging material upon making a gusseted bag or the like may be improved and a folding line may be made nicely upon re-sealing after breaking the seal in the case of a small bag.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17343787A JPH07115454B2 (en) | 1987-07-10 | 1987-07-10 | Packaging material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17343787A JPH07115454B2 (en) | 1987-07-10 | 1987-07-10 | Packaging material |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6416650A true JPS6416650A (en) | 1989-01-20 |
JPH07115454B2 JPH07115454B2 (en) | 1995-12-13 |
Family
ID=15960451
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17343787A Expired - Lifetime JPH07115454B2 (en) | 1987-07-10 | 1987-07-10 | Packaging material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH07115454B2 (en) |
-
1987
- 1987-07-10 JP JP17343787A patent/JPH07115454B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH07115454B2 (en) | 1995-12-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term | ||
FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 12 Free format text: PAYMENT UNTIL: 20071213 |