US4386138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat sealable packaging film of polyacrylonitrile film laminated with olefin polymers and co-polymers
Assignee: Mobil Oil AS
•
Filing: 1981-05-11
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Granted: 1983-05-31
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Expires: 2001-05-11
Abstract
Abstract Biaxially oriented polyacrylonitrile film is treated with corona discharge and laminated on one or both sides with olefin polymer or copolymer by extrusion coating. The resultant laminate has excellent flexibility as measured by the Gelbo flex test. The laminate is readily heat sealed and is useful in packaging application.
Inventors
- 👤 Harold A. Arbit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:06
CPC Classifications
B; B05; B05D; B05D3/00; B05D3/14; B05D3/141; B05D3/142; B05D3/144; B05D1/00; B05D1/26; B05D1/265; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B38/00; B32B38/0008; B05D2201/00; B05D2252/00; B05D2252/02; B32B2307/00; B32B2307/50; B32B2307/514; B32B37/00; B32B37/14; B32B37/15; B32B37/153; Y; Y10; Y10S; Y10S428/00; Y10S428/91; Y10T; Y10T428/00; Y10T428/28; Y10T428/2813; Y10T428/2817; Y10T428/2826; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31928; Y10T428/31935
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
49 words
A laminate consisting of two layers consisting of corona discharge treated biaxially oriented polyacrylonitrile homopolymer film extrusion coated on one side with an olefin polymer or consisting of three layers consisting of corona discharge treated biaxially oriented polyacrylonitrile homopolymer film extrusion coated on both sides with an olefin polymer.
Claim 2
Dependent Claim
49 words
A laminate consisting of two layers consisting of corona discharge treated biaxially oriented polyacrylonitrile homopolymer film extrusion coated on one side with an olefin polymer or consisting of three layers consisting of corona discharge treated biaxially oriented polyacrylonitrile homopolymer film extrusion coated on both sides with an olefin polymer.
Claim 3
Dependent Claim
13 words
The laminate of claim 1, wherein said olefin polymer is low density polyethylene.
Claim 4
Dependent Claim
13 words
The laminate of claim 1, wherein said olefin polymer is ethylene-vinyl acetate copolymer.
Claim 5
Dependent Claim
13 words
The laminate of claim 1, wherein said olefin polymer is ethylene-ethyl acrylate copolymer.
Claim 6
Dependent Claim
12 words
The laminate of claim 1, wherein said olefin polymer is an ionomer.
References Cited (Backward Citations)
GB816024A
Cited
US3437717A
Cited
US3360412A
Cited
US3453173A
Cited
US3565876A
Cited
US3755058A
Cited
US3823061A
Cited
US4096013A
Cited
EP0009884A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-05-30 | 1986-11-29 | 1987-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-30 | 1990-11-29 | 1991-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-30 | 1994-11-29 | 1995-05-31 | $7700.00 | Window Closed / Lapsed |