Patent US4910085A successfully refreshed from Google Patents.
US4910085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple layer packaging films and packages formed thereof
Assignee: General Electric Co
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Filing: 1988-10-11
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Granted: 1990-03-20
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Expires: 2008-10-11
Abstract
Abstract The invention discloses a multiple layer film useful in packaging, and the packages made therefrom. A first layer of the film is a material containing an ester group, a polycarbonate or a polyether block amide copolymer. A second layer of the film is a sealant, preferably polypropylene polymer blended with an elastomeric styrene ethylene butylene styrene copolymer. A third functionally adhesive layer is between the first and second layers. The composition of the third adhesive layer is typically either a polypropylene modified with a carboxy group such as an organic acid or anhydride or a styrene ethylene butylene styrene copolymer.
Inventors
- 👤 Jean E. Raniere
- 👤 Steven L. Smith
- 👤 Russell P. Gehrke
- 👤 Richard E. Johnson, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:33
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; C; C09; C09J; C09J123/00; C09J123/02; C09J123/10; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/24; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507; Y10T428/31725; Y10T428/3175; Y10T428/31757; Y10T428/31786; Y10T428/31797
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
100 words
A multiple layer film, comprising: (a) a first layer, the composition of said first layer being selected from the group consisting of polyesters, copolyesters, polycarbonates, and polyether block amide copolymers; (b) a second sealant layer comprising (i) a first component of a polypropylene and (ii) a second component of a styrene ethylene butylene styrene copolymer; and (c) a third adhesive layer adhering said first layer to said second layer, said third layer being positioned between said first and second layers, and in surface-to-surface contact with said first layer, the composition of said third adhesive layer comprising a carboxy modified propylene.
Claim 2
Dependent Claim
100 words
A multiple layer film, comprising: (a) a first layer, the composition of said first layer being selected from the group consisting of polyesters, copolyesters, polycarbonates, and polyether block amide copolymers; (b) a second sealant layer comprising (i) a first component of a polypropylene and (ii) a second component of a styrene ethylene butylene styrene copolymer; and (c) a third adhesive layer adhering said first layer to said second layer, said third layer being positioned between said first and second layers, and in surface-to-surface contact with said first layer, the composition of said third adhesive layer comprising a carboxy modified propylene.
Claim 3
Dependent Claim
75 words
A multiple layer film comprising: (a) a first layer, the composition of said first layer being selected from the group consisting of polyesters and copolyesters; (b) a second sealant layer; and (c) a third adhesive layer adhering said first layer to said second layer, said third layer being positioned between said first and second layers, and in surface-to-surface contact with said first layer, the composition of said third adhesive layer comprising a carboxy modified polypropylene.
Claim 4
Dependent Claim
75 words
A multiple layer film comprising: (a) a first layer, the composition of said first layer being selected from the group consisting of polyesters and copolyesters; (b) a second sealant layer; and (c) a third adhesive layer adhering said first layer to said second layer, said third layer being positioned between said first and second layers, and in surface-to-surface contact with said first layer, the composition of said third adhesive layer comprising a carboxy modified polypropylene.
Claim 5
Dependent Claim
19 words
A multiple layer film as in claim 2 wherein said first layer comprises a glycol modified cyclohexanedimethanolcyclohexanedicarboxylate, a copolyester.
Claim 6
Dependent Claim
49 words
A multiple layer film as in claim 1 wherein the composition of said second sealant layer comprises a combination of about 40% by weight to about 90% by weight of said polypropylene and about 60% by weight to about 10% by weight of said styrene ethylene butylene styrene copolymer.
Claim 7
Dependent Claim
11 words
A package made from a multiple layer film of claim 1.
Claim 8
Dependent Claim
11 words
A package made from a multiple layer film of claim 2.
Claim 9
Dependent Claim
11 words
A package made from a multiple layer film of claim 3.
Claim 10
Dependent Claim
11 words
A package made from a multiple layer film of claim 4.
Claim 11
Dependent Claim
27 words
A package as in claim 5, said package having been subjected to processing conditions of about 250° F. for a period of at least about 10 minutes.
Claim 12
Dependent Claim
27 words
A package as in claim 6, said package having been subjected to processing conditions of about 250° F. for a period of at least about 10 minutes.
Claim 13
Dependent Claim
27 words
A package as in claim 7, said package having been subjected to processing conditions of about 250° F. for a period of at least about 10 minutes.
Claim 14
Dependent Claim
27 words
A package as in claim 8, said package having been subjected to processing conditions of about 250° F. for a period of at least about 10 minutes.
Claim 15
Dependent Claim
30 words
A package as in any one of claims 5, 6, 7, 8, 9, 10, 11, or 12 wherein said package is adapted to contain medical products including liquids and powders.
References Cited (Backward Citations)
DE120453C
Cited
US2877206A
Cited
USRE28688E
Cited
US3299174A
Cited
DE1629791A1
Cited
US3424649A
Cited
US3572721A
Cited
US3663240A
Cited
US3689595A
Cited
US3701702A
Cited
US3850474A
Cited
US4104210A
Cited
US4142021A
Cited
US4250273A
Cited
US4350795A
Cited
US4423117A
Cited
US4210686A
Cited
US4188443A
Cited
US4189519A
Cited
US4332574A
Cited
US4397916A
Cited
US4322465A
Cited
US4456646A
Cited
US4399249A
Cited
US4361628A
Cited
US4588648A
Cited
US4617240A
Cited
US4440815A
Cited
US4486497A
Cited
US4572852A
Cited
US4479989A
Cited
JPS6025748A
Cited
US4568723A
Cited
US4643926A
Cited
US4769261A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-03-19 | 1993-09-18 | 1994-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-19 | 1997-09-18 | 1998-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-19 | 2001-09-18 | 2002-03-20 | $7700.00 | Window Closed / Lapsed |