US5209972A
Expired / Lapsed
US
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Multiple layer packaging film
Assignee: Rexam Beverage Can Co
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Filing: 1988-11-03
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Granted: 1993-05-11
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Expires: 2008-11-03
Abstract
Abstract A multiple layer packaging film is based on three layers and wherein polyethylene terephthalate is one of the layers. All three layers are oriented. The three layers may be used as a stand-alone film, or may be combined with other layers to achieve additional beneficial properties. Desirably, the polyethylene terephthalate may be metallized, then laminated to a reverse printed layer of oriented polypropylene or polyester.
Inventors
- 👤 Scott S. Super
- 👤 Jerry F. Jesse
- 👤 Joseph C. Hsu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:24
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B65; B65D; B65D75/00; B65D75/26; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2813; Y10T428/2817; Y10T428/2826; Y10T428/31504; Y10T428/31678; Y10T428/31681; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31928; Y10T428/31935
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
69 words
A uniaxially oriented three layer film wherein all three layers are uniaxially oriented, said film comprising, in order, a first uniaxially oriented heat sealable layer, a second uniaxially oriented layer of a modified polyolefin or olefin copolymer adhesive, and a third uniaxially oriented layer of polyethylene terephthalate, said first, second, and third layers being bonded to each other at their respective layer interfaces without the use of intervening adhesives.
Claim 2
Dependent Claim
69 words
A uniaxially oriented three layer film wherein all three layers are uniaxially oriented, said film comprising, in order, a first uniaxially oriented heat sealable layer, a second uniaxially oriented layer of a modified polyolefin or olefin copolymer adhesive, and a third uniaxially oriented layer of polyethylene terephthalate, said first, second, and third layers being bonded to each other at their respective layer interfaces without the use of intervening adhesives.
Claim 3
Dependent Claim
31 words
A uniaxially oriented three layer film as in claim 1, said film having been produced by simultaneously coextruding said first, second and third layers, and subsequently simultaneously orienting all three layers.
Claim 4
Dependent Claim
36 words
A uniaxially oriented three layer film as in claim 1 wherein the composition of said heat sealable layer is chosen from the group consisting of low density polyethylene, ethylene methyl acrylate, ethylene vinyl acetate and ionomer.
Claim 5
Dependent Claim
20 words
A uniaxially oriented three layer film as in claim 1 wherein the composition of said heat sealable layer is ionomer.
Claim 6
Dependent Claim
33 words
A uniaxially oriented three layer film as in claim 2 wherein said heat sealable layer is chosen from the group consisting of low density polyethylene, ethylene methyl acrylate, ethylene vinyl acetate and ionomer.
Claim 7
Dependent Claim
17 words
A uniaxially oriented three layer film as in claim 2 wherein said heat sealable layer is ionomer.
Claim 8
Dependent Claim
18 words
A uniaxially oriented three layer film as in claim 4 wherein said adhesive layer is modified olefin copolymer.
Claim 9
Dependent Claim
19 words
A uniaxially oriented three layer film as in claim 6 wherein said adhesive layer is a modified olefin copolymer.
Claim 10
Dependent Claim
21 words
A uniaxially oriented three layer film as in claim 2 and comprising the subsequent operation of heat setting said oriented film.
Claim 11
Dependent Claim
26 words
A uniaxially oriented three layer film as in claim 9 wherein said adhesive layer is a modified olefin copolymer and wherein said sealant layer is ionomer.
Claim 12
Dependent Claim
76 words
A multiple layer film comprising, in order, a first uniaxially oriented heat sealable layer, a second uniaxially oriented layer of a modified polyolefin or olefin copolymer adhesive, a third uniaxially oriented layer of polyethylene terephthalate, a fourth metallizing layer on said polyethylene terephthalate, a fifth polyethylene adhesive layer, and a sixth abuse resistant layer, said first, second, and third layers being bonded to each other at their respective layer interfaces without the use of intervening adhesives.
Claim 13
Dependent Claim
76 words
A multiple layer film comprising, in order, a first uniaxially oriented heat sealable layer, a second uniaxially oriented layer of a modified polyolefin or olefin copolymer adhesive, a third uniaxially oriented layer of polyethylene terephthalate, a fourth metallizing layer on said polyethylene terephthalate, a fifth polyethylene adhesive layer, and a sixth abuse resistant layer, said first, second, and third layers being bonded to each other at their respective layer interfaces without the use of intervening adhesives.
Claim 14
Dependent Claim
33 words
A multiple layer film as in claim 11 wherein the composition of said first layer is chosen from the group consisting of low density polyethylene, ethylene methyl acrylate, ethylene vinyl acetate and ionomer.
Claim 15
Dependent Claim
17 words
A multiple layer film as in claim 11 wherein the composition of said first layer is ionomer.
Claim 16
Dependent Claim
20 words
A multiple layer film as in claim 13 wherein the composition of said second layer is a modified olefin copolymer.
Claim 17
Dependent Claim
15 words
A multiple layer film as in claim 14 wherein said sixth layer is oriented polypropylene.
Claim 18
Dependent Claim
39 words
A multiple layer film as in claim 15 wherein said oriented polypropylene is reverse printed with ink so that said ink is disposed in the film in locations between said fifth adhesive layer and said sixth oriented polypropylene layer.
Claim 19
Dependent Claim
124 words
A multiple layer film comprising, a first uniaxially oriented heat sealable layer, a second uniaxially oriented layer of a modified polyolefin or olefin copolymer. a third uniaxially oriented layer of polyethylene terephthalate, a fourth polyethylene adhesive layer, a fifth layer of oriented polyester and a sixth metallizing layer, said first, second, third, and fourth layers being disposed in said film in the respective recited order, said sixth layer being disposed on a selected surface of a selected one of said third and fifth layers, said selected surface being the one surface of said selected layer which is adjacent said fourth adhesive layer, said first, second and third layers being bonded to each other at their respective layer interfaces without the use of intervening adhesives.
Claim 20
Dependent Claim
124 words
A multiple layer film comprising, a first uniaxially oriented heat sealable layer, a second uniaxially oriented layer of a modified polyolefin or olefin copolymer. a third uniaxially oriented layer of polyethylene terephthalate, a fourth polyethylene adhesive layer, a fifth layer of oriented polyester and a sixth metallizing layer, said first, second, third, and fourth layers being disposed in said film in the respective recited order, said sixth layer being disposed on a selected surface of a selected one of said third and fifth layers, said selected surface being the one surface of said selected layer which is adjacent said fourth adhesive layer, said first, second and third layers being bonded to each other at their respective layer interfaces without the use of intervening adhesives.
Claim 21
Dependent Claim
23 words
A multiple layer film as in claim 17 wherein said first layer is ionomer and said second layer is a modified olefin copolymer.
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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) | 1996-05-10 | 1996-11-09 | 1997-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-10 | 2000-11-09 | 2001-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-10 | 2004-11-09 | 2005-05-11 | $7700.00 | Window Closed / Lapsed |