CA2259004A1 - Highly oriented fluoropolymer films - Google Patents

Highly oriented fluoropolymer films

Info

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
Application number
CA002259004A
Other languages
French (fr)
Other versions
CA2259004C (en
Inventor
Mingliang Lawrence Tsai
Yash Pal Khanna
Joseph Edgar Mackey
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honeywell International Inc
Original Assignee
Alliedsignal Inc.
Mingliang Lawrence Tsai
Yash Pal Khanna
Joseph Edgar Mackey
Honeywell International Inc.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US08/690,712 external-priority patent/US5874035A/en
Application filed by Alliedsignal Inc., Mingliang Lawrence Tsai, Yash Pal Khanna, Joseph Edgar Mackey, Honeywell International Inc. filed Critical Alliedsignal Inc.
Publication of CA2259004A1 publication Critical patent/CA2259004A1/en
Application granted granted Critical
Publication of CA2259004C publication Critical patent/CA2259004C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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.
CA002259004A 1996-06-20 1997-06-04 Highly oriented fluoropolymer films Expired - Fee Related CA2259004C (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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