US4461808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Films from nylon blends having a moisture content of 0.75 to 2.25 weight percent
Assignee: DuPont Canada Inc
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Filing: 1983-04-27
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Granted: 1984-07-24
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Expires: 2003-04-27
Abstract
Abstract The present invention provides an oriented film made from a blend of nylon 66 with another nylon selected from the group consisting of nylon 6, nylon 11, nylon 12 and nylon 6,12 and having a moisture content of from 0.75 to 2.25% by weight. The weight proportions of nylon 66 to the other nylon are in the range of from 94:6 to 10:90. Such films are suitable for laminating to a sealant web, for food packaging applications.
Inventors
- 👤 Alistair N. Mollison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:58
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/32; B32B27/322; B32B27/30; B32B27/304; B32B27/306; B32B27/34; B32B7/00; B32B7/04; B32B7/12; C; C08; C08J; C08J5/00; C08J5/18; C08L; C08L77/00; C08L77/02; B32B2270/00; B32B2307/00; B32B2307/50; B32B2307/514; B32B2307/516; B32B2307/70; B32B2307/704; B32B2307/718; C08J2377/00; C08J2377/06; Y; Y10; Y10S; Y10S428/00; Y10S428/91; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31725; Y10T428/31739; Y10T428/31743
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
64 words
An oriented nylon film made from a blend of nylon 66 and another nylon selected from the group consisting of nylon 6, nylon 11, nylon 12 and nylon 6,12, the weight proportions of nylon 66 to said other nylon being in the range of from 92:8 to 75:25, said nylon film having a moisture content of from about 0.75 to about 2.25 wt. %.
Claim 2
Dependent Claim
64 words
An oriented nylon film made from a blend of nylon 66 and another nylon selected from the group consisting of nylon 6, nylon 11, nylon 12 and nylon 6,12, the weight proportions of nylon 66 to said other nylon being in the range of from 92:8 to 75:25, said nylon film having a moisture content of from about 0.75 to about 2.25 wt. %.
Claim 3
Dependent Claim
18 words
A film of claim 1 wherein the moisture content is from about 1.0 to about 2.0 wt. %.
Claim 4
Dependent Claim
12 words
A film of claim 2 wherein said other nylon is nylon 6.
Claim 5
Dependent Claim
23 words
A film of claim 2 having been monoaxially oriented in the machine direction at a draw ratio of between about 1.1 and 5.5.
Claim 6
Dependent Claim
23 words
A film of claim 2 having been monoaxially oriented in the machine direction at a draw ratio of between about 2.6 and 4.8.
Claim 7
Dependent Claim
12 words
A film of claim 1 wherein said other nylon is nylon 6.
Claim 8
Dependent Claim
23 words
A film of claim 1 having been monoaxially oriented in the machine direction at a draw ratio of between about 1.1 and 5.5.
Claim 9
Dependent Claim
23 words
A film of claim 1 having been monoaxially oriented in the machine direction at a draw ratio of between about 2.6 and 4.8.
Claim 10
Dependent Claim
76 words
A film laminate comprising an oriented nylon film and a sealant web, said nylon film being made from a blend of nylon 66 and another nylon selected from the group consisting of nylon 6, nylon 11, nylon 12 and nylon 6,12 the weight proportions of nylon 66 to said other nylon being in the range of from 92:8 to 75:25, said nylon film having a moisture content of from about 0.75 to about 2.25 wt. %.
Claim 11
Dependent Claim
76 words
A film laminate comprising an oriented nylon film and a sealant web, said nylon film being made from a blend of nylon 66 and another nylon selected from the group consisting of nylon 6, nylon 11, nylon 12 and nylon 6,12 the weight proportions of nylon 66 to said other nylon being in the range of from 92:8 to 75:25, said nylon film having a moisture content of from about 0.75 to about 2.25 wt. %.
Claim 12
Dependent Claim
23 words
A film laminate of claim 9 having a layer of crystalline vinylidene chloride copolymer between the oriented nylon film and the sealant web.
Claim 13
Dependent Claim
45 words
A film laminate of claim 9 wherein the sealant web is selected from the group consisting of polyethylene, ethylene-vinyl acetate copolymers, ionomers, PVC and blends thereof, said laminate having a layer of crystalline vinylidene chloride copolymer between the oriented nylon film and the sealant web.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-07-24 | 1988-01-23 | 1988-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-24 | 1992-01-23 | 1992-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-24 | 1996-01-23 | 1996-07-24 | $7700.00 | Window Closed / Lapsed |