Patent US4363841A successfully refreshed from Google Patents.
US4363841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated packaging material
Assignee: Pechiney Plastic Packaging Inc
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Filing: 1981-12-28
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Granted: 1982-12-14
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Expires: 2001-12-28
Abstract
Abstract A laminated packaging material suitable for use in flexible containers for potato chips, corn chips, and the like, comprises (A) as an outer surface, a transparent sheet of nylon, polyester, cellophane, or polypropylene, (B) a coextruded laminate of pigmented polyethylene and ethylene acrylic acid copolymer, (C) a metallic foil, preferably aluminum, and (D) a heat-sealable polyolefin as an inner surface. Bags prepared from this packaging material have excellent moisture resistance and sealing properties.
Inventors
- 👤 John E. Snow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:48
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; B32B15/085; B32B7/00; B32B7/04; B32B7/12; B32B2311/00; B32B2311/24; B32B2323/00; B32B2323/04; B32B2323/046; B32B2323/10; B32B2367/00; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1334; Y10T428/1338; Y10T428/24; Y10T428/24777; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/24975; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31699; Y10T428/31725; Y10T428/31739; Y10T428/31743; Y10T428/31746; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/3192; Y10T428/31928
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
76 words
A laminated packaging material comprising (a) a transparent film of nylon, polyester, cellophane or polypropylene as an outer surface; (b) a coextruded laminate of pigmented polyethylene and an ethylene acrylic acid copolymer, said coextruded laminate affixed to said transparent film with the pigmented polyethylene adjacent the transparent film; (c) a metallic foil affixed to the ethylene acrylic acid copolymer of said coextruded laminate; and (d) a heat-sealable inner polyolefin containing layer affixed to said metallic foil.
Claim 2
Dependent Claim
76 words
A laminated packaging material comprising (a) a transparent film of nylon, polyester, cellophane or polypropylene as an outer surface; (b) a coextruded laminate of pigmented polyethylene and an ethylene acrylic acid copolymer, said coextruded laminate affixed to said transparent film with the pigmented polyethylene adjacent the transparent film; (c) a metallic foil affixed to the ethylene acrylic acid copolymer of said coextruded laminate; and (d) a heat-sealable inner polyolefin containing layer affixed to said metallic foil.
Claim 3
Dependent Claim
16 words
The laminated packaging material of claim 1 wherein said heat-sealable inner polyolefin containing layer is polyethylene.
Claim 4
Dependent Claim
36 words
The laminated packaging material of claim 1 wherein said heat-sealable inner polyolefin containing layer is a coextruded layer of polyethylene and an ethylene acrylic acid copolymer with the ethylene acrylic acid copolymer adjacent said metallic foil.
Claim 5
Dependent Claim
80 words
The laminated packaging material of claim 1 in which the transparent outer surface film has a thickness of from about 0.3 to about 2.0 mils, the coextruded laminate of pigmented polyethylene and an ethylene acrylic acid copolymer has a thickness of from about 0.3 to about 2.0 mils, the metallic foil has a thickness of from about 0.25 to about 0.50 mils, and the heat-sealable inner polyolefin containing layer has a thickness of from about 0.5 to about 3 mils.
Claim 6
Dependent Claim
80 words
The laminated packaging material of claim 2 in which the transparent outer surface film has a thickness of from about 0.3 to about 2.0 mils, the coextruded laminate of pigmented polyethylene and an ethylene acrylic acid copolymer has a thickness of from about 0.3 to about 2.0 mils, the metallic foil has a thickness of from about 0.25 to about 0.50 mils, and the heat-sealable inner polyolefin containing layer has a thickness of from about 0.5 to about 3 mils.
Claim 7
Dependent Claim
80 words
The laminated packaging material of claim 3 in which the transparent outer surface film has a thickness of from about 0.3 to about 2.0 mils, the coextruded laminate of pigmented polyethylene and an ethylene acrylic acid copolymer has a thickness of from about 0.3 to about 2.0 mils, the metallic foil has a thickness of from about 0.25 to about 0.50 mils, and the heat-sealable inner polyolefin containing layer has a thickness of from about 0.5 to about 3 mils.
Claim 8
Dependent Claim
69 words
The laminated packaging material of claim 4 in which the transparent outer surface film has a thickness of from 0.5 to 1 mil, the coextruded laminate of pigmented polyethylene and an ethylene acrylic acid copolymer has a thickness of from 0.5 to 1 mil, the foil has a thickness of about 0.35 mils and the heat-sealable inner polyolefin containing layer has a thickness of from 1 to 2 mils.
Claim 9
Dependent Claim
69 words
The laminated packaging material of claim 5 in which the transparent outer surface film has a thickness of from 0.5 to 1 mil, the coextruded laminate of pigmented polyethylene and an ethylene acrylic acid copolymer has a thickness of from 0.5 to 1 mil, the foil has a thickness of about 0.35 mils and the heat-sealable inner polyolefin containing layer has a thickness of from 1 to 2 mils.
Claim 10
Dependent Claim
69 words
The laminated packaging material of claim 6 in which the transparent outer surface film has a thickness of from 0.5 to 1 mil, the coextruded laminate of pigmented polyethylene and an ethylene acrylic acid copolymer has a thickness of from 0.5 to 1 mil, the foil has a thickness of about 0.35 mils and the heat-sealable inner polyolefin containing layer has a thickness of from 1 to 2 mils.
Claim 11
Dependent Claim
14 words
The laminated packaging material of claim 1 in which the metallic foil is aluminum.
Claim 12
Dependent Claim
14 words
The laminated packaging material of claim 2 in which the metallic foil is aluminum.
Claim 13
Dependent Claim
14 words
The laminated packaging material of claim 3 in which the metallic foil is aluminum.
Claim 14
Dependent Claim
20 words
The laminated packaging material of claim 1 in which the pigmented polyethylene contains from about 5 to about 25% pigment.
Claim 15
Dependent Claim
13 words
The laminated packaging material of claim 13 wherein the pigment is titanium dioxide.
Claim 16
Dependent Claim
17 words
The packaging material of claim 14 in which the pigmented polyethylene film contains about 10% titanium dioxide.
Claim 17
Dependent Claim
31 words
A flexible pouch formed by heat sealing two parallel panels of the laminated packaging material of claim 1 along the edges of their respective inner heat-sealable surfaces forming a space therebetween.
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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) | 1985-12-13 | 1986-06-14 | 1986-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-13 | 1990-06-14 | 1990-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-13 | 1994-06-14 | 1994-12-14 | $7700.00 | Window Closed / Lapsed |