Patent US4358956A successfully refreshed from Google Patents.
US4874656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-layer packaging material
Assignee: A ABLSTROM Corp A CORP OF FINLAND
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Filing: 1988-04-27
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Granted: 1989-10-17
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Expires: 2008-04-27
Abstract
Abstract This invention provides a strong multi-layer packaging material having a high mechanical resistance and an impermeability to gases and vapors. It comprises at least the following layers: (1) an outer layer of polyester (2) a first inner layer of oriented polypropylene affixed to the polyester layer (3) a second inner layer of metallic foil affixed to the oriented polypropylene layer (4) an outer layer of polyethylene affixed to the metallic foil layer and between said layers are layers of adhesive.
Inventors
- 👤 Veikko O. Rantanen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:34
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B15/00; B32B15/04; B32B15/08; B32B15/085; B32B27/32; B32B27/36; B32B2307/00; B32B2307/70; B32B2307/724; B32B2307/7242; B32B2307/7246; B32B2311/00; B32B2311/24; B32B2323/00; B32B2323/04; B32B2323/10; B32B2367/00; B32B2553/00; Y; Y10; Y10S; Y10S428/00; Y10S428/91; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/24975; Y10T428/31504; Y10T428/31551; Y10T428/31573; Y10T428/31576; Y10T428/31605; Y10T428/31678; Y10T428/31692; Y10T428/31786; Y10T428/31797
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
134 words
A multi-layer laminate having a high mechanical resistance and an impermeability to gases and vapors, comprising at least the following layers: (A) a first outer layer of polyester having a thickness of about 12-24 μm; (B) a first inner layer of oriented polypropylene having a thickness of about 20-40 μm, affixed to the first outer layer of polyester; (C) a second inner layer of metallic foil having a thickness of about 9-18 μm affixed to the first inner layer of oriented polypropylene; (D) a second outer layer of polyethylene having a thickness of about 65-130 μm affixed to the second inner layer of metallic foil; and layers of adhesive between said first outer and first inner layers, between said first inner and second inner layers, and between said second inner and second outer layers.
Claim 2
Dependent Claim
134 words
A multi-layer laminate having a high mechanical resistance and an impermeability to gases and vapors, comprising at least the following layers: (A) a first outer layer of polyester having a thickness of about 12-24 μm; (B) a first inner layer of oriented polypropylene having a thickness of about 20-40 μm, affixed to the first outer layer of polyester; (C) a second inner layer of metallic foil having a thickness of about 9-18 μm affixed to the first inner layer of oriented polypropylene; (D) a second outer layer of polyethylene having a thickness of about 65-130 μm affixed to the second inner layer of metallic foil; and layers of adhesive between said first outer and first inner layers, between said first inner and second inner layers, and between said second inner and second outer layers.
Claim 3
Dependent Claim
12 words
A multi-layer laminate according to claim 1 wherein said polyester is polyethyleneterephthalate.
Claim 4
Dependent Claim
17 words
A multi-layer laminate according to claim 1 wherein said oriented polypropylene is manufactured by blown extrusion method.
Claim 5
Dependent Claim
14 words
A multi-layer laminate according to claim 1 wherein said metallic foil is aluminium foil.
Claim 6
Dependent Claim
12 words
A multi-layer laminate according to claim 1 wherein the adhesive is polyurethane.
Claim 7
Dependent Claim
15 words
A multi-layer laminate according to claim 1 wherein the adhesive is a two component polyurethane.
Claim 8
Dependent Claim
87 words
A multi-layer laminate having a high mechanical resistance and a impermeability to gases and vapors, said laminate consisting of: (a) a first outer layer of polyester; (b) a first inner layer of oriented polypropylene; (c) a second inner layer of metallic foil; (d) a second outer layer of polyethylene affixed to the metallic foil layer; and (e) a layer of polyurethane adhesive between said first outer and first inner layers, between said first inner and second inner layers, and between said second inner and second outer layers.
Claim 9
Dependent Claim
87 words
A multi-layer laminate having a high mechanical resistance and a impermeability to gases and vapors, said laminate consisting of: (a) a first outer layer of polyester; (b) a first inner layer of oriented polypropylene; (c) a second inner layer of metallic foil; (d) a second outer layer of polyethylene affixed to the metallic foil layer; and (e) a layer of polyurethane adhesive between said first outer and first inner layers, between said first inner and second inner layers, and between said second inner and second outer layers.
Claim 10
Dependent Claim
17 words
A multi-layer laminate according to claim 7 wherein the thickness of said polyester layer is 12-24 μm.
Claim 11
Dependent Claim
18 words
A multi-layer laminate according to claim 7 wherein the thickness of said oriented polypropylene layer is 20-40 μm.
Claim 12
Dependent Claim
17 words
A multi-layer laminate according to claim 7 wherein the thickness of said metallic foil is 9-18 μm.
Claim 13
Dependent Claim
17 words
A multi-layer laminate according to claim 7 wherein the thickness of said polyethylene layer is 65-130 μm.
Claim 14
Dependent Claim
12 words
A multi-layer laminate according to claim 7 wherein said polyester is polyethyleneterephthalate.
Claim 15
Dependent Claim
17 words
A multi-layer laminate according to claim 7 wherein said oriented polypropylene is manufactured by blown extrusion method.
Claim 16
Dependent Claim
14 words
A multi-layer laminate according to claim 7 wherein said metallic foil is aluminum foil.
Claim 17
Dependent Claim
15 words
A multi-layer laminate according to claim 7 wherein the adhesive is a two component polyurethane.
References Cited (Backward Citations)
US3343663A
Cited
US4452846A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-10-16 | 1993-04-17 | 1993-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-16 | 1997-04-17 | 1997-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-16 | 2001-04-17 | 2001-10-17 | $7700.00 | Window Closed / Lapsed |