Patent US4640853A successfully refreshed from Google Patents.
US4640853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fiber wound plastic beverage can
Assignee: Shell USA Inc
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Filing: 1985-08-12
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Granted: 1987-02-03
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Expires: 2005-08-12
Abstract
Abstract A carbonated beverage can which will withstand pressure from carbonated beverages without bursting or excessive swelling which comprises a can wall made up of a thermoplastic core, fiber-adhesive wound layers contiguous to the thermoplastic core, and a barrier layer contiguous to or within the thermoplastic core or contiguous to or within the fiber-adhesive wound layers.
Inventors
- 👤 W. R. Schmeal
- 👤 S. N. Singhal
- 👤 K. H. Lo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:22
CPC Classifications
B; B65; B65D; B65D3/00; B65D3/22; B29; B29C; B29C53/00; B29C53/80; B29C53/82; B29C53/821; B29C53/822; B31; B31C; B31C3/00; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1303; Y10T428/131; Y10T428/1314; Y10T428/1348; Y10T428/1352; Y10T428/1369; Y10T428/1379; Y10T428/1383; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2936
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
82 words
A beverage can which will withstand pressure from carbonated beverages and which has acceptable swelling resistance, which comprises: a thermoplastic core; at least two fiber layers wound on said thermoplastic core; adhesive layer between said fiber layers and said core and between said fiber layers themselves where said fiber layers are made of multiple fibers in an ordered relation; and a barrier layer contiguous to either said thermoplastic core or said fiber layers or within said thermoplastic core or said fiber layers.
Claim 2
Dependent Claim
82 words
A beverage can which will withstand pressure from carbonated beverages and which has acceptable swelling resistance, which comprises: a thermoplastic core; at least two fiber layers wound on said thermoplastic core; adhesive layer between said fiber layers and said core and between said fiber layers themselves where said fiber layers are made of multiple fibers in an ordered relation; and a barrier layer contiguous to either said thermoplastic core or said fiber layers or within said thermoplastic core or said fiber layers.
Claim 3
Dependent Claim
69 words
The beverage can of claim 1, wherein said can comprises: a thermoplastic core selected from the group of polypropylene, PET, paper, polyethylene and polyketone wherein said core is either spirally wound or extruded and wherein said fiber layer is selected from the group of glass, PET, nylon, rayon and cotton wherein said barrier layer is either a copolymer of polyvinylidine chloride or hydrolyzed copolymers of vinyl acetate and ethylene.
Claim 4
Dependent Claim
31 words
The beverage can of claim 1, wherein said thermoplastic core is polypropylene, wherein said fiber layer is PET and wherein said barrier layer contains hydrolyzed copolymers of vinyl acetate and ethylene.
Claim 5
Dependent Claim
11 words
The beverage can of claim 1, wherein said core is extruded.
Claim 6
Dependent Claim
83 words
A beverage can which will withstand pressure from carbonated beverages and which has acceptable swelling resistance, which comprises: a polypropylene core; at least two PET fiber layers wound on said polypropylene core; adhesive layers between said fiber layer and said core and between said fiber layers themselves where said fiber layers are made of multiple fibers in an ordered relation; and a barrier layer contiguous to either said polypropylene core or said fiber layers or within said polypropylene core or said fiber layers.
Claim 7
Dependent Claim
83 words
A beverage can which will withstand pressure from carbonated beverages and which has acceptable swelling resistance, which comprises: a polypropylene core; at least two PET fiber layers wound on said polypropylene core; adhesive layers between said fiber layer and said core and between said fiber layers themselves where said fiber layers are made of multiple fibers in an ordered relation; and a barrier layer contiguous to either said polypropylene core or said fiber layers or within said polypropylene core or said fiber layers.
Claim 8
Dependent Claim
15 words
The beverage can of claim 5, wherein said polypropylene core is spirally wound or extruded.
Claim 9
Dependent Claim
81 words
A beverage can which will withstand pressure from carbonated beverages and which has acceptable swelling resistance, which comprises: a thermoplastic core; at least two fiber layers wound on said thermoplastic core; adhesive layers between said fiber layer and said core and between said fiber layer and said core and between said fiber layers themselves; where said fiber layers are made of multiple fibers in an ordered relation; and a barrier layer contiguous to either said thermoplastic core or said fiber layers.
Claim 10
Dependent Claim
81 words
A beverage can which will withstand pressure from carbonated beverages and which has acceptable swelling resistance, which comprises: a thermoplastic core; at least two fiber layers wound on said thermoplastic core; adhesive layers between said fiber layer and said core and between said fiber layer and said core and between said fiber layers themselves; where said fiber layers are made of multiple fibers in an ordered relation; and a barrier layer contiguous to either said thermoplastic core or said fiber layers.
Claim 11
Dependent Claim
82 words
The beverage can of claim 7, wherein said can comprises a thermoplastic core selected from the group of polypropylene, PET, paper, polyethylene and polyketone, wherein said core is either spirally wound or extruded and wherein said fiber layer is selected from the group of glass, PET, nylon, rayon and cotton, wherein said fiber adhesive wound layer contains at least 20% fiber coverage, and wherein said barrier layer is either a copolymer of polyvinylidene chloride or hydrolyzed copolymers of vinyl acetate and ethylene.
Claim 12
Dependent Claim
31 words
The beverage can of claim 7, wherein said thermoplastic core is polypropylene, wherein said fiber layer is PET, and wherein said barrier layer contains hydrolyzed copolymers of vinyl acetate and ethylene.
Claim 13
Dependent Claim
11 words
The beverage can of claim 7, wherein said core is extruded.
References Cited (Backward Citations)
US2873226A
Cited
US3098582A
Cited
US3445049A
Cited
US3567536A
Cited
US4004727A
Cited
US4181239A
Cited
US4379014A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-02-02 | 1990-08-04 | 1991-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-02 | 1994-08-04 | 1995-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-02 | 1998-08-04 | 1999-02-03 | $7700.00 | Window Closed / Lapsed |