JPS5454179A - Method of forming polypropylene film - Google Patents
Method of forming polypropylene filmInfo
- Publication number
- JPS5454179A JPS5454179A JP12051477A JP12051477A JPS5454179A JP S5454179 A JPS5454179 A JP S5454179A JP 12051477 A JP12051477 A JP 12051477A JP 12051477 A JP12051477 A JP 12051477A JP S5454179 A JPS5454179 A JP S5454179A
- Authority
- JP
- Japan
- Prior art keywords
- cooled
- polypropylene film
- biaxial directions
- extruded
- oriented simultaneously
- 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)
Abstract
PURPOSE: After melt extruded and cooled under specific conditions, a specific starting material of resin is oriented simultaneously in biaxial directions to form polypropylene films with excellent electrical insulation and slippage properties and further high dimesnional atability at high temperatures.
CONSTITUTION: An isotactic polypropylene of 1.75-1.95 intrinsic viscosity (measured in tetraline at 135°C) and 97% or more isotactic index (expressed by the remaining amount after extraction with boiling n-heptane) is extruded into sheets and cooled rapidly to 50-80°C. Then the resulting sheet is further cooled to a temperature below 40°C and oriented simultaneously in the biaxial directions to form polypropylene film with 5 or more uneveness of 0.1-1 micron height per 1 mm2 area of the surface
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12051477A JPS5454179A (en) | 1977-10-08 | 1977-10-08 | Method of forming polypropylene film |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12051477A JPS5454179A (en) | 1977-10-08 | 1977-10-08 | Method of forming polypropylene film |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5454179A true JPS5454179A (en) | 1979-04-28 |
Family
ID=14788096
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12051477A Pending JPS5454179A (en) | 1977-10-08 | 1977-10-08 | Method of forming polypropylene film |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5454179A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59211908A (en) * | 1983-05-17 | 1984-11-30 | 株式会社東芝 | Oil-filled film capacitor |
JPS61268479A (en) * | 1984-11-15 | 1986-11-27 | Ajinomoto Co Inc | Transfer printing method |
-
1977
- 1977-10-08 JP JP12051477A patent/JPS5454179A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59211908A (en) * | 1983-05-17 | 1984-11-30 | 株式会社東芝 | Oil-filled film capacitor |
JPS6360483B2 (en) * | 1983-05-17 | 1988-11-24 | ||
JPS61268479A (en) * | 1984-11-15 | 1986-11-27 | Ajinomoto Co Inc | Transfer printing method |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0204843A4 (en) | Low temperature heat shrinkable film and process for producing the same. | |
JPS559806A (en) | Polypropylene two-axes extended composite film | |
JPS5454179A (en) | Method of forming polypropylene film | |
JPS53141187A (en) | Process for fabricating cation exchange film | |
JPS548672A (en) | Production of polyester film | |
JPS5527203A (en) | Producing process of polypropyrene sheet having superior transparency | |
JPS5460348A (en) | Low-temperature heat-sealing resin composition and laminated flim with high transparency | |
JPS5662128A (en) | Preparation of poly-p-phenylene sulfide film | |
JPS5747371A (en) | Pressure-sensitive packaging film | |
JPS5466978A (en) | Production of polypropylene film | |
JPS5517516A (en) | Molding method of polyester sheet | |
JPS5555829A (en) | Heat-shrinkable polyethylene resin film and its manufacturing process | |
JPS5646731A (en) | Preparation of laminated film | |
JPS57164135A (en) | Polypropylene composition for thermoforming | |
JPS55154131A (en) | Preparation of biaxially-drawn laminated polypropylene film | |
JPS5619718A (en) | Preparation of multiple-layered thermoforming vessel | |
JPS5798321A (en) | Formation of ethylene-propylene block co-polymer sheet or film | |
JPS5478743A (en) | Film of crosslinked polyethylene | |
JPS5651331A (en) | Manufacture of polyester film | |
JPS5466990A (en) | Polypropylene composite film | |
JPS5514278A (en) | Molding method | |
JPS5638219A (en) | Method and device for adhering tablet | |
JPS5495684A (en) | Polypropylene composite film | |
JPS5543121A (en) | Removal of monomer from polystyrene resin | |
JPS5530976A (en) | Manufacture of emboss sheet |