Patent US4096946A successfully refreshed from Google Patents.
US4096946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminate for use in packing oil
Assignee: ES&A Robinson Canada Ltd
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Filing: 1976-03-15
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Granted: 1978-06-27
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Expires: 1996-03-15
Abstract
Abstract A laminate, which has improved resistance to the passage of oil therethrough and which is suitable for the packaging of oleaginous substances, particularly motor oil, is described. The laminate comprises a pair of outer layers of a solid ethylene polymer, such as polyethylene or copolymers of ethylene with propylene or butene-1, and at least one inner barrier layer of a dried emulsion coating of a vinylidene chloride copolymer, the inner barrier layer being bonded to the inner surfaces of the outer layers. One of the outer layers may be bonded to the inner barrier layer by means of an oil-resistant adhesive, or, in the case where there are two inner barrier layers, the inner layers may be bonded together by an oil-resistant adhesive between the dried emulsion coatings.
Inventors
- 👤 Herbert G. Cook
- 👤 Jack A. McAvity
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:06
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/32; B32B2255/00; B32B2255/10; B32B2255/26; B32B2307/00; B32B2307/70; B32B2307/726; B32B2307/7265; B32B2309/00; B32B2309/08; B32B2309/10; B32B2309/105; B32B2439/00; B32B2439/70; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/266; Y10T428/269; Y10T428/27; Y10T428/31504; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/3192
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
94 words
A package formed from a sheet material which is a laminate consisting essentially of outer layers of copolymer of ethylene with propylene or butene and at least one inner barrier layer consisting of a vinylidene chloride polymer in the form of a dried emulsion coating which is free of plasticizer, said barrier layer being bonded to the inner surface of said outer layers, one of said ethylene polymer layers being bonded to said dried vinylidene chloride polymer coating layer by means of an oil resistant adhesive and an oleaginous material contained within said package.
Claim 2
Dependent Claim
94 words
A package formed from a sheet material which is a laminate consisting essentially of outer layers of copolymer of ethylene with propylene or butene and at least one inner barrier layer consisting of a vinylidene chloride polymer in the form of a dried emulsion coating which is free of plasticizer, said barrier layer being bonded to the inner surface of said outer layers, one of said ethylene polymer layers being bonded to said dried vinylidene chloride polymer coating layer by means of an oil resistant adhesive and an oleaginous material contained within said package.
Claim 3
Dependent Claim
35 words
A package as claimed in claim 1 in which the other of said ethylene polymer outer layers of the sheet material is bonded to said single vinylidene chloride polymer coating layer by a primer coating.
Claim 4
Dependent Claim
56 words
A package as claimed in claim 1 in which said ethylene polymer layers of the sheet material have a thickness in the range of 1 to 5 mils and said dried vinylidene chloride polymer emulsion coating layer is present in an amount of 2 to 8 lbs. of resin per 3,000 sq. ft. of sheet material.
Claim 5
Dependent Claim
19 words
A package as claimed in claim 3 in which said laminate has a total thickness not exceeding 7 mils.
Claim 6
Dependent Claim
54 words
A package as claimed in claim 1 in which said ethylene polymer layers of the sheet material have a thickness in the range 2 to 4 mils and the dried vinylidene chloride polymer emulsion coating is present in an amount from 2 to 4 lbs. of resin per 3000 sq. ft. of sheet material.
Claim 7
Dependent Claim
23 words
A package as claimed in claim 1 in which said ethylene polymer of the sheet material is a copolymer of ethylene and butene.
Claim 8
Dependent Claim
10 words
A package as claimed in claim 1 containing motor oil.
Claim 9
Dependent Claim
89 words
A packaged oleaginous material contained in a sheet material which is a laminate consisting essentially of outer layers of a copolymer of ethylene with propylene or butene and at least one inner barrier layer consisting of a vinylidene chloride polymer in the form of a dried emulsion coating which is free of plasticizer, said barrier layer being bonded to the inner surface of said outer layers, one of said ethylene polymer layers being bonded to said dried vinylidene chloride polymer coating layer by means of an oil resistant adhesive.
Claim 10
Dependent Claim
89 words
A packaged oleaginous material contained in a sheet material which is a laminate consisting essentially of outer layers of a copolymer of ethylene with propylene or butene and at least one inner barrier layer consisting of a vinylidene chloride polymer in the form of a dried emulsion coating which is free of plasticizer, said barrier layer being bonded to the inner surface of said outer layers, one of said ethylene polymer layers being bonded to said dried vinylidene chloride polymer coating layer by means of an oil resistant adhesive.
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) | 1981-06-26 | 1981-12-26 | 1982-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-26 | 1985-12-26 | 1986-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-26 | 1989-12-26 | 1990-06-27 | $7700.00 | Window Closed / Lapsed |