JPS54134781A - Ultra-heavy gage biaxially oriented polypropylene film - Google Patents
Ultra-heavy gage biaxially oriented polypropylene filmInfo
- Publication number
- JPS54134781A JPS54134781A JP4209778A JP4209778A JPS54134781A JP S54134781 A JPS54134781 A JP S54134781A JP 4209778 A JP4209778 A JP 4209778A JP 4209778 A JP4209778 A JP 4209778A JP S54134781 A JPS54134781 A JP S54134781A
- Authority
- JP
- Japan
- Prior art keywords
- polypropylene film
- biaxially oriented
- pref
- oriented polypropylene
- ultra
- 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
Links
Landscapes
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Laminated Bodies (AREA)
Abstract
PURPOSE:To provide the title polypropylene film having excellent transparency, mechanical properties, flatness, electrical properties, moisture barrier characteristics, etc., characterized by the particular cleavage index, orientation coefficient to the b-direction, and thickness. CONSTITUTION:For example, 2-20 sheets of biaxially oriented polypropylene film are stacked each other, and temporarily bonded by heating at 100-140 deg.C under tension while evaculating the air between each layer. The temporarily bonded films are firmly bonded by pressing at 140-155 deg.C under a linear pressure of >=25 kg/cm. The polypropylene film thus obtained has a cleavage index of 1-20 pref. 0-10; an orientation coefficient to the b-axis direction (cos<2>phib z) of >=0.65, pref.>=0.72; and a film thickness of >=mum, pref.>=260mum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4209778A JPS54134781A (en) | 1978-04-12 | 1978-04-12 | Ultra-heavy gage biaxially oriented polypropylene film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4209778A JPS54134781A (en) | 1978-04-12 | 1978-04-12 | Ultra-heavy gage biaxially oriented polypropylene film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS54134781A true JPS54134781A (en) | 1979-10-19 |
Family
ID=12626483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4209778A Pending JPS54134781A (en) | 1978-04-12 | 1978-04-12 | Ultra-heavy gage biaxially oriented polypropylene film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54134781A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017186561A (en) * | 2016-04-05 | 2017-10-12 | サンアロマー株式会社 | Polypropylene sheet, molded body thereof and manufacturing method therefor |
-
1978
- 1978-04-12 JP JP4209778A patent/JPS54134781A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017186561A (en) * | 2016-04-05 | 2017-10-12 | サンアロマー株式会社 | Polypropylene sheet, molded body thereof and manufacturing method therefor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20060404 |
|
| A313 | Final decision of rejection without a dissenting response from the applicant |
Effective date: 20060821 Free format text: JAPANESE INTERMEDIATE CODE: A313 |
|
| A02 | Decision of refusal |
Effective date: 20060926 Free format text: JAPANESE INTERMEDIATE CODE: A02 |