JPS5630827A - Preparation of ethylene-vinyl alcoholic copolymer film - Google Patents
Preparation of ethylene-vinyl alcoholic copolymer filmInfo
- Publication number
- JPS5630827A JPS5630827A JP10756979A JP10756979A JPS5630827A JP S5630827 A JPS5630827 A JP S5630827A JP 10756979 A JP10756979 A JP 10756979A JP 10756979 A JP10756979 A JP 10756979A JP S5630827 A JPS5630827 A JP S5630827A
- Authority
- JP
- Japan
- Prior art keywords
- ethylene
- resistance
- temperature
- specific gravity
- unoriented film
- 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
Abstract
PURPOSE: To improve resistance to permeation of gases, and resistance to water and the like by a method wherein multiaxial stretching an unoriented film of ethylene- vinyl alcoholic copolymer having specified values of ethylene content, saponification degree, specific gravity and water content is effected under a specified temperature.
CONSTITUTION: An unoriented film consisting of ethylene-vinyl alcohole copolymer, having 20W55mol% ethylene contents, 98mol% or more saponification degree and a specific gravity described by a formula (I) (wherein d is the specific gravity and X is the ethylene content in mol%), is manufactured. Biaxial or multiaxial stretching of the unoriented film is effected under a condition of 3.5% or less of water content and 50W130°C of temperature so that a magnification of area becomes 4W20 times. The water content of the unoriented film is preferable to be substantially zero. When the orientaive film after stretching is heat-treated under a condition of stretched or loose state, 100°C or more of temperature, and a temperature of the melting point thereof minus 10°C, if necessary, resistance to permeation of gases, resistance to water and the like can be improved furthermore.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54107569A JPS6026697B2 (en) | 1979-08-22 | 1979-08-22 | Method for producing ethylene-vinyl alcohol copolymer film |
NZ192416A NZ192416A (en) | 1978-12-29 | 1979-12-17 | Ethylene-vinyl alcohol copolymer film which can be biaxially or multiaxially stretched |
CA000342168A CA1137726A (en) | 1978-12-29 | 1979-12-18 | Method of producing ethylene-vinyl alcohol copolymer film |
AU54007/79A AU529160B2 (en) | 1978-12-29 | 1979-12-19 | Producing ethylene-vinyl alcohol copoylmer film |
US06/105,412 US4294935A (en) | 1978-12-29 | 1979-12-19 | Method of producing ethylene-vinyl alcohol copolymer film |
GB7944078A GB2039249B (en) | 1978-12-29 | 1979-12-21 | Stretching ethylene-vinyl-alcohol copolymer film |
FR7932044A FR2445211A1 (en) | 1978-12-29 | 1979-12-28 | PROCESS FOR PRODUCING A FILM OF ETHYLENE AND VINYL ALCOHOL COPOLYMER |
IT28443/79A IT1129502B (en) | 1978-12-29 | 1979-12-28 | PROCEDURE FOR THE PRODUCTION OF ETHYLENE VINYL ALCOHOL COPOLYMER FILMS |
DE2952509A DE2952509C2 (en) | 1978-12-29 | 1979-12-28 | Process for producing an ethylene / vinyl alcohol copolymer film |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54107569A JPS6026697B2 (en) | 1979-08-22 | 1979-08-22 | Method for producing ethylene-vinyl alcohol copolymer film |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5630827A true JPS5630827A (en) | 1981-03-28 |
JPS6026697B2 JPS6026697B2 (en) | 1985-06-25 |
Family
ID=14462488
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54107569A Expired JPS6026697B2 (en) | 1978-12-29 | 1979-08-22 | Method for producing ethylene-vinyl alcohol copolymer film |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6026697B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61235127A (en) * | 1985-04-12 | 1986-10-20 | Mitsubishi Monsanto Chem Co | Manufacture of biaxially oriented film of saponified ethylene-vinylacetate copolymer |
JPH01267032A (en) * | 1988-04-19 | 1989-10-24 | Mitsubishi Monsanto Chem Co | Transparent plastic film excellent in gas barrier property |
JPH02227174A (en) * | 1989-02-27 | 1990-09-10 | Nippon Synthetic Chem Ind Co Ltd:The | Method for forming film of saponified ethylene/vinyl acetate copolymer |
JP2002052493A (en) * | 2000-08-09 | 2002-02-19 | Kuraray Co Ltd | Manufacturing method for ethylene-vinyl alcohol copolymer resin film |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6242382A (en) * | 1985-08-20 | 1987-02-24 | Matsushita Electric Ind Co Ltd | Holder for cassette holder |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4999369A (en) * | 1973-01-23 | 1974-09-19 | ||
JPS5343198A (en) * | 1976-09-29 | 1978-04-19 | Brooks & Perkins | Method of producing neutron absorbing sheet material |
JPS5591632A (en) * | 1978-12-29 | 1980-07-11 | Kuraray Co Ltd | Manufacture of ethylene vinyl alcohol copolymer film |
-
1979
- 1979-08-22 JP JP54107569A patent/JPS6026697B2/en not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4999369A (en) * | 1973-01-23 | 1974-09-19 | ||
JPS5343198A (en) * | 1976-09-29 | 1978-04-19 | Brooks & Perkins | Method of producing neutron absorbing sheet material |
JPS5591632A (en) * | 1978-12-29 | 1980-07-11 | Kuraray Co Ltd | Manufacture of ethylene vinyl alcohol copolymer film |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61235127A (en) * | 1985-04-12 | 1986-10-20 | Mitsubishi Monsanto Chem Co | Manufacture of biaxially oriented film of saponified ethylene-vinylacetate copolymer |
JPH01267032A (en) * | 1988-04-19 | 1989-10-24 | Mitsubishi Monsanto Chem Co | Transparent plastic film excellent in gas barrier property |
JPH02227174A (en) * | 1989-02-27 | 1990-09-10 | Nippon Synthetic Chem Ind Co Ltd:The | Method for forming film of saponified ethylene/vinyl acetate copolymer |
JP2002052493A (en) * | 2000-08-09 | 2002-02-19 | Kuraray Co Ltd | Manufacturing method for ethylene-vinyl alcohol copolymer resin film |
JP4542681B2 (en) * | 2000-08-09 | 2010-09-15 | 株式会社クラレ | Method for producing ethylene-vinyl alcohol copolymer resin film |
Also Published As
Publication number | Publication date |
---|---|
JPS6026697B2 (en) | 1985-06-25 |
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