Patent US3840427A successfully refreshed from Google Patents.
US3840427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Triplex films with nylon as a laminating layer
Assignee: BRH Corp
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Filing: 1972-07-26
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Granted: 1974-10-08
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Expires: 1992-07-26
Abstract
Abstract Flexible packaging films with at least three layers comprising an unprimed polyolefin first film and a second film as exterior layers which are joined together with nylon as an interior layer for laminating the two exterior films together. Other layers or coatings may be applied to the exterior layers.
Inventors
- 👤 I Brazier
- 👤 B Elliott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:52
CPC Classifications
B; B32; B32B; B32B7/00; B32B7/04; B32B7/12; B32B27/00; B32B27/06; B32B27/08; B32B2310/00; B32B2310/14; B32B2323/00; B32B2323/04; B32B2323/043; B32B2323/046; B32B2323/10; B32B2367/00; B32B2377/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31725; Y10T428/31739; Y10T428/31743; Y10T428/31746; Y10T428/31855; Y10T428/31931; Y10T428/31938
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
8 words
A FLEXIBLE PACKAGING FILM COMPRISING THE COMBINATION OF:
Claim 2
Dependent Claim
8 words
A FLEXIBLE PACKAGING FILM COMPRISING THE COMBINATION OF:
Claim 3
Dependent Claim
12 words
A FIRST FILM OF POLYOLEFIN MATERIAL HAVING A CORONA DISCHARGE TREATED SURFACE;
Claim 4
Dependent Claim
12 words
A FIRST FILM OF POLYOLEFIN MATERIAL HAVING A CORONA DISCHARGE TREATED SURFACE;
Claim 5
Dependent Claim
8 words
A SECOND FILM OF BIAXIALLY ORIENTED POLYPROPLYENE; AND
Claim 6
Dependent Claim
8 words
A SECOND FILM OF BIAXIALLY ORIENTED POLYPROPLYENE; AND
Claim 7
Dependent Claim
8 words
a second film of biaxially oriented polypropylene; and
Claim 8
Dependent Claim
8 words
a second film of biaxially oriented polypropylene; and
Claim 9
Dependent Claim
57 words
a nylon layer joined to the treated surface of the first film and joined to a surface of the second film to form a firmly bonded composite film, the nylon having been applied in a molten condition to the first film, said nylon being nylon 6, nylon 66, nylon 610, nylon 7, nylon 9 or nylon 11.
Claim 10
Dependent Claim
57 words
a nylon layer joined to the treated surface of the first film and joined to a surface of the second film to form a firmly bonded composite film, the nylon having been applied in a molten condition to the first film, said nylon being nylon 6, nylon 66, nylon 610, nylon 7, nylon 9 or nylon 11.
Claim 11
Dependent Claim
57 words
A NYLON LAYER JOINED TO THE TREATED SURFACE OF THE FIRST FILM AND JOINED TO A SURFACE OF THE SECOND FILM TO FORM A FIRMLY BONDED COMPOSITE FILM, THE NYLON HAVING BEEN APPLIED IN A MOLTEN CONDITION TO THE FIRST FILM, SAID NYLON BEING NYLON 6, NYLON 66, NYLON 610, NYLON 7, NYLON 9 OR NYLON 11.
Claim 12
Dependent Claim
57 words
A NYLON LAYER JOINED TO THE TREATED SURFACE OF THE FIRST FILM AND JOINED TO A SURFACE OF THE SECOND FILM TO FORM A FIRMLY BONDED COMPOSITE FILM, THE NYLON HAVING BEEN APPLIED IN A MOLTEN CONDITION TO THE FIRST FILM, SAID NYLON BEING NYLON 6, NYLON 66, NYLON 610, NYLON 7, NYLON 9 OR NYLON 11.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-07 | 1978-04-08 | 1978-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-07 | 1982-04-08 | 1982-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-07 | 1986-04-08 | 1986-10-08 | $7700.00 | Window Closed / Lapsed |