Patent US4596338A successfully refreshed from Google Patents.
US4596338A
Expired / Lapsed
US
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Air permeable container cap lining and sealing material
Assignee: Individual
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Filing: 1985-07-08
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Granted: 1986-06-24
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Expires: 2005-07-08
Abstract
Abstract A laminated air permeable container cap lining and sealing material comprising layers of pulp, aluminum foil, paper, wax, paper and air permeable heat sealing material.
Inventors
- 👤 Bahjat Yousif
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:38
CPC Classifications
B; B65; B65D; B65D53/00; B65D53/04; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31801; Y10T428/31804; Y10T428/31808
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
189 words
A laminated air permeable container cap lining and sealing material comprising a layer of pulp; a layer of aluminum foil adhesively secured to one surface of said layer of pulp; a first layer of paper adhesively secured to said layer of aluminum foil opposite said layer of pulp; a layer of wax disposed on the surface of said first layer of paper opposite said layer of aluminum foil and having a preselected melting point; a second layer of paper disposed on said layer of wax opposite said first layer of paper, being air permeable, and treated to resist penetration by the contents to be placed in said container; and a layer of air permeable heat sealing material disposed on the surface of said second layer of paper opposite said layer of wax; such that upon heating of said layer of aluminum foil to a temperature above the melting point of said layer of wax, said layer of wax melts and is absorbed into said first layer of paper and said second layer of paper is sealed to the rim of said container by said air permeable heat sealing material.
Claim 2
Dependent Claim
189 words
A laminated air permeable container cap lining and sealing material comprising a layer of pulp; a layer of aluminum foil adhesively secured to one surface of said layer of pulp; a first layer of paper adhesively secured to said layer of aluminum foil opposite said layer of pulp; a layer of wax disposed on the surface of said first layer of paper opposite said layer of aluminum foil and having a preselected melting point; a second layer of paper disposed on said layer of wax opposite said first layer of paper, being air permeable, and treated to resist penetration by the contents to be placed in said container; and a layer of air permeable heat sealing material disposed on the surface of said second layer of paper opposite said layer of wax; such that upon heating of said layer of aluminum foil to a temperature above the melting point of said layer of wax, said layer of wax melts and is absorbed into said first layer of paper and said second layer of paper is sealed to the rim of said container by said air permeable heat sealing material.
Claim 3
Dependent Claim
19 words
A material as set forth in claim 1 wherein said second layer of paper is treated for water resistance.
Claim 4
Dependent Claim
19 words
A material as set forth in claim 1 wherein said second layer of paper is treated for oil resistance.
Claim 5
Dependent Claim
41 words
A material as set forth in claim 1 wherein said air permeable heat sealing material is selected from the group of water based acrylic polymers consisting of ethylene vinyl chloride, vinyl acetate, ethylene vinyl acetate, polyvinyledene chloride, and thermo set vinyl.
References Cited (Backward Citations)
US2026937A
Cited
US4503123A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-06-23 | 1989-12-23 | 1990-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-23 | 1993-12-23 | 1994-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-23 | 1997-12-23 | 1998-06-24 | $7700.00 | Window Closed / Lapsed |