US4139665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packaging material
Assignee: Lever Brothers Co
•
Filing: 1977-10-17
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Granted: 1979-02-13
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Expires: 1997-10-17
Abstract
Abstract A laminate comprising an inner and an outer water vapor barrier layer and an intermediate flavor and oxygen barrier layer of a thermoplastic material with a high nitrile content provides for a packaging material for perfumed and flavored compositions, e.g. a dentifrice-tube.
Inventors
- 👤 Francisco Herrero
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:29
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1379; Y10T428/1383; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/3192; Y10T428/31928
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
89 words
A laminar packaging comprising a laminate consisting of an inner and an outer moisture and water vapor barrier layer, each barrier layer having a thickness of 50-200 microns and being selected from the group consisting of polypropylene, vinylchloride polymers and vinylchloride copolymers, and an intermediate flavor and oxygen barrier layer having a thickness of 10--100 microns, wherein the latter consists of a thermoplastic acrylonitrile copolymer with a nitrile content of 70-93% by weight selected from the group consisting of acrylonitrile/styrene copolymer, methacrylonitrile/styrene copolymer, acrylonitrile/styrene/butadiene copolymer, and acrylonitrile/methyl acrylate/butadiene copolymer.
Claim 2
Dependent Claim
89 words
A laminar packaging comprising a laminate consisting of an inner and an outer moisture and water vapor barrier layer, each barrier layer having a thickness of 50-200 microns and being selected from the group consisting of polypropylene, vinylchloride polymers and vinylchloride copolymers, and an intermediate flavor and oxygen barrier layer having a thickness of 10--100 microns, wherein the latter consists of a thermoplastic acrylonitrile copolymer with a nitrile content of 70-93% by weight selected from the group consisting of acrylonitrile/styrene copolymer, methacrylonitrile/styrene copolymer, acrylonitrile/styrene/butadiene copolymer, and acrylonitrile/methyl acrylate/butadiene copolymer.
Claim 3
Dependent Claim
26 words
The laminar packaging material of claim 1 wherein the thermoplastic copolymer is an acrylonitrile/styrene/butadiene copolymer with a nitrile content of 70-93% by weight of the copolymer.
Claim 4
Dependent Claim
17 words
The laminar packaging material of claim 2, wherein the inner and outer layers are made from polypropylene.
Claim 5
Dependent Claim
18 words
A container suitable for packing flavored or perfumed substances, made from the laminar packaging material of claim 1.
Claim 6
Dependent Claim
15 words
A toothpaste tube comprising a barrel made from the laminar packaging material of claim 1.
References Cited (Backward Citations)
US2893908A
Cited
US3453173A
Cited
US3606958A
Cited
US3823850A
Cited
US4015033A
Cited
US3908070A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-02-12 | 1982-08-14 | 1983-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-12 | 1986-08-14 | 1987-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-12 | 1990-08-14 | 1991-02-13 | $7700.00 | Window Closed / Lapsed |