US4287274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite flexible film laminate
Assignee: Pakcel Converters Ltd
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Filing: 1979-09-26
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Granted: 1981-09-01
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Expires: 1999-09-26
Abstract
Abstract A flexible film laminate, according to the invention, can be applied directly to the cardboard tubing of dry cell batteries during the manufacture of same. In a preferred arrangement the laminate comprises, a first layer of a plastics film 1, a second layer of discrete areas of colored pigments 2, a third layer of adhesive 3, a fourth layer of a metallic deposit 4 on the surface of a fifth layer, said fifth layer of a plastics material 5, a sixth layer of adhesive 6, a layer of finely divided clay mineral particles 7, a layer of bleached kraft paper 8 and a final layer of uncured heat sensitive adhesive 9.
Inventors
- 👤 Peter Ibbotson
- 👤 John C. Smith
- 👤 Colin Frodsham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:30
CPC Classifications
C; C09; C09J; C09J7/00; C09J7/30; C09J7/35; H; H01; H01M; H01M50/00; H01M50/10; H01M50/116; H01M50/117; H01M50/119; H01M50/121; H01M50/124; H01M50/126; H01M50/128; H01M50/129; H01M50/131; H01M50/136; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/31504; Y10T428/31551; Y10T428/31565; Y10T428/31591; Y10T428/31598; Y10T428/31605; Y10T428/31678; Y10T428/31681; Y10T428/31786
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
76 words
A laminate film comprising a first layer of a plastics material, a second layer of discrete areas of coloured pigments, a third layer of adhesive, a fourth layer of a metallic deposit on the surface of a fifth layer, said fifth layer being of a plastics material, a sixth layer of adhesive, a seventh layer of a clay based coating on an eighth layer, said eighth layer being paper and a ninth layer of uncured adhesive.
Claim 2
Dependent Claim
76 words
A laminate film comprising a first layer of a plastics material, a second layer of discrete areas of coloured pigments, a third layer of adhesive, a fourth layer of a metallic deposit on the surface of a fifth layer, said fifth layer being of a plastics material, a sixth layer of adhesive, a seventh layer of a clay based coating on an eighth layer, said eighth layer being paper and a ninth layer of uncured adhesive.
Claim 3
Dependent Claim
20 words
A laminate film according to claim 1 wherein the first and fifth layers of plastic material are polyethylene terephthalate film.
Claim 4
Dependent Claim
26 words
A laminate film according to claim 1 wherein the second layer is a printing ink system comprising a polyester resin base with coloured pigments dispersed therein.
Claim 5
Dependent Claim
17 words
A laminate film according to claim 1 wherein the coloured pigments are rendered into a graphical design.
Claim 6
Dependent Claim
19 words
A laminate film according to claim 1 wherein the third and sixth layers are both hydroxyl-isocyanate polyurethane curing adhesives.
Claim 7
Dependent Claim
14 words
A laminate film according to claim 1 wherein the metallic deposit is of aluminium.
Claim 8
Dependent Claim
33 words
A laminate film according to claim 1 wherein the clay based coating is a finely divided dispersion of clay minerals which is applied to the surface of the paper then dried and smoothed.
Claim 9
Dependent Claim
14 words
A laminate film according to claim 1 wherein the paper is bleached kraft paper.
Claim 10
Dependent Claim
19 words
A laminate film according to claim 1 wherein the uncured adhesive is heat sensitive and contains ethylene vinyl acetate.
Claim 11
Dependent Claim
20 words
A dry cell or battery of dry cells incorporating as the casing thereof a laminate film according to claim 1.
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) | 1984-08-31 | 1985-03-02 | 1985-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-31 | 1989-03-02 | 1989-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-31 | 1993-03-02 | 1993-09-01 | $7700.00 | Window Closed / Lapsed |