US4912103A
Expired / Lapsed
US
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Water vapor barrier laminate for packaging
Assignee: Jefferson Smurfit Corp
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Filing: 1988-05-05
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Granted: 1990-03-27
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Expires: 2008-05-05
Abstract
Abstract A transparent, flexible, heat sealable, water vapor barrier laminate, for use in forming a protective package, which is formed from three layers secured to each other by separate layers of laminating adhesive. One outer layer is a protective material consisting of a polyester film; the center layer is a barrier material consisting of a fluid compression rolled, monoaxially molecuarly oriented, high density polyethylene film; and the other outer layer is another protective material consisting of an ionomer film.
Inventors
- 👤 William R. Sibbach
- 👤 Roger P. Conant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:22
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/30; B32B27/308; B32B27/32; B32B27/36; B32B7/00; B32B7/04; B32B7/12; B32B2307/00; B32B2307/30; B32B2307/31; B32B2307/40; B32B2307/412; B32B2307/50; B32B2307/514; B32B2307/516; B32B2307/70; B32B2307/724; B32B2307/7242; B32B2307/7246; B32B2323/00; B32B2323/04; B32B2323/043; B32B2333/00; B32B2333/04; B32B2333/08; B32B2367/00; B32B2439/00; B32B2439/02; B32B2439/06; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/28; Y10T428/2813; Y10T428/2817; Y10T428/2826; Y10T428/31504; Y10T428/31786; Y10T428/31794; Y10T428/31797; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31938
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
138 words
A transparent, flexible, heat sealable, water vapor barrier laminate for use in forming a protective package that qualifies as meeting United States Military Specification Type I MIL-B-22191 by having a maximum moisture vapor transmission rate of 0.03 grams per 100 square inches per 24 hours, comprising: (a) a first layer of a protective material consisting of a polyester film; (b) a second layer of a water resistant, laminating adhesive material consisting of a two component, catalyzed polyester; (c) a third layer of a barrier material which consists of a fluid compression rolled, monoaxially molecularly oriented, high density polyethylene film; (d) a fourth layer of a water resistant, laminating adhesive material consisting of a two component, catalyzed polyester; (e) a fifth layer of a heat sealable, protective material consisting of an ionomer film derived from ethylene/methacrylic acid copolymer resin.
Claim 2
Dependent Claim
138 words
A transparent, flexible, heat sealable, water vapor barrier laminate for use in forming a protective package that qualifies as meeting United States Military Specification Type I MIL-B-22191 by having a maximum moisture vapor transmission rate of 0.03 grams per 100 square inches per 24 hours, comprising: (a) a first layer of a protective material consisting of a polyester film; (b) a second layer of a water resistant, laminating adhesive material consisting of a two component, catalyzed polyester; (c) a third layer of a barrier material which consists of a fluid compression rolled, monoaxially molecularly oriented, high density polyethylene film; (d) a fourth layer of a water resistant, laminating adhesive material consisting of a two component, catalyzed polyester; (e) a fifth layer of a heat sealable, protective material consisting of an ionomer film derived from ethylene/methacrylic acid copolymer resin.
Claim 3
Dependent Claim
117 words
A transparent, flexible, heat sealable, water vapor barrier laminate for use in forming a protective package that qualifies as meeting type I United States Military Specification MIL-B-22191D by having a maximum moisture vapor transmission rate of 0.03 grams per 100 square inches per 24 hours, comprising: (a) a first layer of a protective material consisting of polyester film; (b) a second layer of a water resistant, laminating adhesive material; (c) a third layer of a barrier material which consists of a fluid compression rolled, monoaxially molecularly oriented, high density polyethylene film; (d) a fourth layer of a water resistant, laminating adhesive material; (e) a fifth layer of a heat sealable, protective material consisting of an ionomer film.
Claim 4
Dependent Claim
117 words
A transparent, flexible, heat sealable, water vapor barrier laminate for use in forming a protective package that qualifies as meeting type I United States Military Specification MIL-B-22191D by having a maximum moisture vapor transmission rate of 0.03 grams per 100 square inches per 24 hours, comprising: (a) a first layer of a protective material consisting of polyester film; (b) a second layer of a water resistant, laminating adhesive material; (c) a third layer of a barrier material which consists of a fluid compression rolled, monoaxially molecularly oriented, high density polyethylene film; (d) a fourth layer of a water resistant, laminating adhesive material; (e) a fifth layer of a heat sealable, protective material consisting of an ionomer film.
Claim 5
Dependent Claim
54 words
A laminate according to claim 2, wherein the thicknesses of the layers of material are in the following ranges: First Layer from 0.25 to 1.0 mils Second Layer from 0.075 to 0.25 mils Third Layer from 2.0 to 6.0 mils Fourth Layer from 0.075 to 0.25 mils Fifth Layer from 1.0 to 4.0 mils.
Claim 6
Dependent Claim
37 words
A laminate according to claim 2, wherein the thicknesses of the layers of material are as follows: First Layer 0.5 mils Second Layer 0.1 mils Third Layer 3.25 mils Fourth Layer 0.1 mils Fifth Layer 2.0 mils.
Claim 7
Dependent Claim
14 words
A laminate according to claim 2, wherein said ionomer film is a polyolefin film.
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) | 1993-03-26 | 1993-09-25 | 1994-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-26 | 1997-09-25 | 1998-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-26 | 2001-09-25 | 2002-03-27 | $7700.00 | Window Closed / Lapsed |