US3912843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible packaging film
Assignee: BRH Corp
•
Filing: 1970-06-29
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Granted: 1975-10-14
•
Expires: 1990-06-29
Abstract
Abstract A multiple-layer flexible packaging film including layers of nylon, biaxially oriented polypropylene and a heat sealable polyolefin in which the polypropylene and the heat sealable polyolefin form exterior layers and the nylon is an interior layer positioned therebetween. A saran barrier layer is also included as an interior layer.
Inventors
- 👤 Irvin L Brazier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:00
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/32; B32B27/34; B32B2250/00; B32B2250/24; B32B2307/00; B32B2307/30; B32B2307/31; B32B2307/50; B32B2307/514; B32B2307/518; B32B2323/00; B32B2323/10; B32B2553/00; Y; Y10; Y10S; Y10S428/00; Y10S428/91; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31725; Y10T428/31739; Y10T428/31743; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/3192
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
21 words
A FLEXIBLE PACKAGING FILM COMPRISING MULTIPLE LAYER FIRMLY JOINTED TO ONE ANOTHER TO FORM A COMPOSITE FILM CONSTRUCTION, INCLUDING IN COMBINATION:
Claim 2
Dependent Claim
21 words
A FLEXIBLE PACKAGING FILM COMPRISING MULTIPLE LAYER FIRMLY JOINTED TO ONE ANOTHER TO FORM A COMPOSITE FILM CONSTRUCTION, INCLUDING IN COMBINATION:
Claim 3
Dependent Claim
9 words
A FIRST EXTERIOR LAYER CONSISTNG OF BIXIALLY ORIENTED POLYPOLYLENE,
Claim 4
Dependent Claim
9 words
A FIRST EXTERIOR LAYER CONSISTNG OF BIXIALLY ORIENTED POLYPOLYLENE,
Claim 5
Dependent Claim
12 words
A SECOND EXTERIOR LAYER CONSISTING OF A HEAT SEALABLE POLYOLEFIN MATERIAL, AND
Claim 6
Dependent Claim
12 words
A SECOND EXTERIOR LAYER CONSISTING OF A HEAT SEALABLE POLYOLEFIN MATERIAL, AND
Claim 7
Dependent Claim
12 words
a second exterior layer consisting of a heat sealable polyolefin material; and
Claim 8
Dependent Claim
12 words
a second exterior layer consisting of a heat sealable polyolefin material; and
Claim 9
Dependent Claim
22 words
A flexible packaging film according to claim 1 further including: a saran barrier layer positioned between the first and second exterior layers.
Claim 10
Dependent Claim
24 words
A flexible packaging film according to claim 1, wherein; the second exterior layer is a heat sealable polyethylene homopolymer, ethylene-vinylacetate copolymer, or ethylene-ethylacrylate copolymer.
Claim 11
Dependent Claim
52 words
an interior layer consisting of nylon positioned between the first and second exterior layers, the film characterized in that the second exterior layer and the interior layer are each more extensible than the first layer to provide a film particularly suitable for making gas-filled packages resistant to compressive failure and burst failure.
Claim 12
Dependent Claim
52 words
an interior layer consisting of nylon positioned between the first and second exterior layers, the film characterized in that the second exterior layer and the interior layer are each more extensible than the first layer to provide a film particularly suitable for making gas-filled packages resistant to compressive failure and burst failure.
Claim 13
Dependent Claim
52 words
AN INTERIOR LAYER CONSISTING OF NYLON POSITIONED BETWEEN THE FIRST AND SECOND EXTERIOR LAYERS, THE FILM CHARACTERIZED IN TAT THE SECOND EXTERIOR LAYER AND THE INTERIOR LAYER ARE EACH MORE EXTENSIBLE THAN THE FIRST LAYER TO PROVIDE A FILM PARTICULARLY SUITABLE FOR MAKING GAS-FILLED PACKAGES RESISTANT TO COMPRESSIVE FAILURE AND BURST FAILURE.
Claim 14
Dependent Claim
52 words
AN INTERIOR LAYER CONSISTING OF NYLON POSITIONED BETWEEN THE FIRST AND SECOND EXTERIOR LAYERS, THE FILM CHARACTERIZED IN TAT THE SECOND EXTERIOR LAYER AND THE INTERIOR LAYER ARE EACH MORE EXTENSIBLE THAN THE FIRST LAYER TO PROVIDE A FILM PARTICULARLY SUITABLE FOR MAKING GAS-FILLED PACKAGES RESISTANT TO COMPRESSIVE FAILURE AND BURST FAILURE.
References Cited (Backward Citations)
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US3370972A
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US3423231A
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US3524795A
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US3519531A
Cited
US3558330A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-13 | 1979-04-14 | 1979-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-13 | 1983-04-14 | 1983-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-13 | 1987-04-14 | 1987-10-14 | $7700.00 | Window Closed / Lapsed |