US5221576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum-based composite and containers produced therefrom
Assignee: Albea Tubes France SAS
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Filing: 1990-07-03
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Granted: 1993-06-22
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Expires: 2010-07-03
Abstract
Abstract The invention relates to a strip or portion of a strip for deep drawing or drawing and ironing comprising a metallic layer carrying on one surface a surface coating of plastics material and on its other surface a coat of varnish characterized in that: the metallic layer is of aluminum alloy with each surface having a coating of anodic or chemical conversion oxide 20 to 80 nm thick; and the coat of varnish contains a solid lubricant consisting of particles which are harder than the varnish and less hard than the shaping tool or tools, which particles are of an average diameter greater than the thickness of the said coat after firing. The invention also has an object the use of this strip to produce various hollow bodies or containers, particularly with a height:diameter ratio in excess of 2.5 and for producing aerosol or pump distributors. Thus transformed, the strip according to the invention can be applied to various fields such as those of cleaning products, hygiene, foodstuffs, cosmetics and pharmaceuticals.
Inventors
- 👤 Richard Bosc
- 👤 Pierre Brugerolle
- 👤 Alain Jupin
- 👤 Rene Layre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:56
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; B05; B05B; B05B11/00; B05B11/0005; B05B11/0037; B32B1/00; B32B1/08; B32B15/20; B32B27/00; B32B27/32; B32B7/00; B32B7/04; B32B7/12; B65; B65D; B65D83/00; B65D83/14; B65D83/38; B32B2305/00; B32B2305/02; B32B2305/024; B32B2323/00; B32B2323/04; B32B2323/046; B32B2435/00; B32B2439/00; B32B2439/40; B32B2439/66; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1355; Y10T428/1359; Y10T428/1379; Y10T428/1383; Y10T428/25; Y10T428/254; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/31504; Y10T428/31551; Y10T428/31605; Y10T428/31678; Y10T428/31692; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/3192
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
118 words
A strip for producing a hollow body by deep drawing or drawing and ironing, said strip comprising: an aluminum alloy base having two surfaces, each said surface having coated thereon an anodic or chemical conversion oxide layer having a thickness of 20 to 80 nm; one said surface carrying, over said oxide layer, a coating of plastic material; and the opposite surface carrying, over said oxide layer, a layer of cured in-situ varnish having distributed therein a plurality of micronized, solid lubricant particles insoluble in the varnish and harder than the cured varnish, the mean diameter of said particles being greater than the thickness of the cured varnish, resulting in protuberance of said particles over said opposite surface.
Claim 2
Dependent Claim
118 words
A strip for producing a hollow body by deep drawing or drawing and ironing, said strip comprising: an aluminum alloy base having two surfaces, each said surface having coated thereon an anodic or chemical conversion oxide layer having a thickness of 20 to 80 nm; one said surface carrying, over said oxide layer, a coating of plastic material; and the opposite surface carrying, over said oxide layer, a layer of cured in-situ varnish having distributed therein a plurality of micronized, solid lubricant particles insoluble in the varnish and harder than the cured varnish, the mean diameter of said particles being greater than the thickness of the cured varnish, resulting in protuberance of said particles over said opposite surface.
Claim 3
Dependent Claim
30 words
A strip according to claim 1 in which said base of aluminum alloy comprises on each surface a layer of anodic oxide of a thickness between 30 and 80 nm.
Claim 4
Dependent Claim
17 words
A strip according to claim 2 in which the anodic oxide layer is obtained by phosphoric anodization.
Claim 5
Dependent Claim
30 words
A strip according to claim 1 in which said base of aluminum alloy comprises on each surface a chemical conversion coating of a thickness between 20 nm and 60 nm.
Claim 6
Dependent Claim
29 words
A strip according to any one of claims 1 to 4 in which the average diameter of the particles (100) of solid lubricant is between 1 and 30 μm.
Claim 7
Dependent Claim
22 words
A strip according to claim 5, in which the cured varnish layer contains between 0.1 and 10% by weight of solid lubricant.
Claim 8
Dependent Claim
18 words
A strip according to claim 6, in which said varnish layer contains between 0.5 and 5% solid lubricant.
Claim 9
Dependent Claim
38 words
A strip according to claim 5, in which the solid lubricant consists essentially of particles (100) selected from the group consisting of polyethylene with a molecular weight in excess of 100,000, polypropylene, polytetrafluoroethylene, organic amide and mixtures thereof.
Claim 10
Dependent Claim
37 words
A strip according to claim 2 in which said coating of plastic material is a layer of a thickness between 15 μm and 100 μm and has an elongation rate of more than 200% in all directions.
Claim 11
Dependent Claim
63 words
A strip according to claim 9 in which said coating of plastic material (7, 11) comprises at least one coat containing, by weight, at least 50% and up to 100% of polyethylene, polypropylene or copolymer of polyethylene or polypropylene with another polyolefin, and at most 50% of an acid copolymer obtained from olefins and unsaturated organic acids or anhydrides, and optionally unsaturated esters.
Claim 12
Dependent Claim
39 words
A strip according to claim 10, in which said coating of plastic material comprises a plurality of layers of different compositions, consisting of polyethylene with a molecular weight in excess of 100,000, polypropylene, polytetrafluoroethylene, organic amide and mixtures thereof.
Claim 13
Dependent Claim
17 words
A strip according to claim 9 in which said layer of plastic material comprises linear low-density polyethylene.
Claim 14
Dependent Claim
40 words
A strip according to any one of claims 9 to 11 comprising between said base (5) and the said layer of plastic material (11) an adhesive layer (9) which comprises polyurethane and which is between 0.5 and 10 μm thick.
Claim 15
Dependent Claim
56 words
A strip according to any one of claims 9 to 11, comprising between said base (5) and said plastic layer (7) an adhesive layer (10) of a thickness between 1 μm and 20 μm and comprising more than 50% and up to 100% by weight of acid copolymer and less than 50% by weight of polyolefins.
Claim 16
Dependent Claim
22 words
A strip according to claim 9, in which said layer of plastic material contains, by weight, from 0.1 to 0.5% ethylene bistearamide.
Claim 17
Dependent Claim
21 words
A strip according to claim 1 in which said layer of varnish (6) has a thickness between 1 and 8 μm.
Claim 18
Dependent Claim
29 words
A strip according to claim 16 in which said varnish is a varnish selected from the group consisting of acrylic, epoxy urea, vinyl organisol, epoxy phenol, and polyester varnishes.
Claim 19
Dependent Claim
16 words
A strip according to claim 16, in which said thickness is between 2 and 5 μm.
Claim 20
Dependent Claim
28 words
A strip according to claim 1, wherein the ratio of the mean diameter of said particles to the thickness of said cured varnish is less than about 10.
Claim 21
Dependent Claim
29 words
A strip according to claim 19 in which the ratio of the mean diameter of said particles to the thickness of said cured varnish is between 4 and 10.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-06-21 | 1996-12-21 | 1997-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-06-21 | 2000-12-21 | 2001-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-06-21 | 2004-12-21 | 2005-06-22 | $7700.00 | Window Closed / Lapsed |