CA2259004A1 - Highly oriented fluoropolymer films - Google Patents
Highly oriented fluoropolymer filmsInfo
- Publication number
- CA2259004A1 CA2259004A1 CA002259004A CA2259004A CA2259004A1 CA 2259004 A1 CA2259004 A1 CA 2259004A1 CA 002259004 A CA002259004 A CA 002259004A CA 2259004 A CA2259004 A CA 2259004A CA 2259004 A1 CA2259004 A1 CA 2259004A1
- Authority
- CA
- Canada
- Prior art keywords
- layer
- fluoropolymer
- film
- polyolefin
- films
- 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
- Laminated Bodies (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
The present invention provides highly oriented multilayer films. They are produced by coextruding or laminating films having at least one layer of a fluoropolymer, at least one layer of a polyolefin homopolymer or copolymer and an intermediate adhesive layer of a polyolefin having at least one functional moiety of an unsaturated carboxylic acid or anhydride thereof. With this structure the polyolefin layer allows the fluoropolymer layer to be stretched up to ten times its original length. Such a high orientation ratio for the fluoropolymer film increases the mechanical strength, toughness, and water vapor barrier properties of the film while using a thinner gauge fluoropolymer film. Coextrusion processing can be done at higher temperatures, i.e. in the range of from at about 280 ~C to about 400 ~C. These temperatures allow films to be produced in the absence of polymer degradation and film melt fracture.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US2049796P | 1996-06-20 | 1996-06-20 | |
US60/020,497 | 1996-06-20 | ||
US08/690,712 | 1996-07-31 | ||
US08/690,712 US5874035A (en) | 1996-06-20 | 1996-07-31 | Highly oriented fluoropolymer films |
PCT/US1997/009170 WO1997048553A1 (en) | 1996-06-20 | 1997-06-04 | Highly oriented fluoropolymer films |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2259004A1 true CA2259004A1 (en) | 1997-12-24 |
CA2259004C CA2259004C (en) | 2006-06-27 |
Family
ID=36647439
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002259004A Expired - Fee Related CA2259004C (en) | 1996-06-20 | 1997-06-04 | Highly oriented fluoropolymer films |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2259004C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113117533A (en) * | 2019-12-31 | 2021-07-16 | 浙江省化工研究院有限公司 | Polyvinylidene fluoride hollow fiber microfiltration membrane and preparation method thereof |
-
1997
- 1997-06-04 CA CA002259004A patent/CA2259004C/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113117533A (en) * | 2019-12-31 | 2021-07-16 | 浙江省化工研究院有限公司 | Polyvinylidene fluoride hollow fiber microfiltration membrane and preparation method thereof |
CN113117533B (en) * | 2019-12-31 | 2022-12-02 | 浙江省化工研究院有限公司 | Polyvinylidene fluoride hollow fiber microfiltration membrane and preparation method thereof |
Also Published As
Publication number | Publication date |
---|---|
CA2259004C (en) | 2006-06-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |