US4545842A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for adhesive bonding of aluminum
Assignee: Reynolds Metals Co
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Filing: 1984-07-27
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Granted: 1985-10-08
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Expires: 2004-07-27
Abstract
Abstract A method is disclosed for laminating plastics resin films to aluminum. The aluminum surface to be bonded is treated with a coating composition consisting essentially of an aqueous solution of polyacrylic acid or esters thereof and at least one acid selected from the group consisting of H 2 ZrF 6 , H 2 TiF 6 and H 2 SiF 6 . After this coating has dried, the plastics resin film is bonded to the aluminum, using dry laminating adhesives.
Inventors
- 👤 Robert C. Parsons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:01
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; B32B15/09; B32B15/085; B32B15/20; B32B27/00; B32B27/32; B32B27/36; B32B37/00; B32B37/06; B32B37/10; B32B38/00; B32B38/16; B32B7/00; B32B7/04; B32B7/12; B32B2255/00; B32B2255/06; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
141 words
In a method for bonding a plastics resin film to aluminum comprising applying an adhesive to said film or said aluminum, drying said adhesive, contacting said film and said aluminum with said adhesive therebetween to form a laminate and subjecting said laminate to heat and pressure to bond said laminate the improvement comprising treating the surface of said aluminum to be bonded with a composition consisting essentially of an aqueous solution having from about 0.5 to about 10 grams per liter of polyacrylic acid or esters thereof and from about 0.2 to about 8 grams per liter of at least one acid selected from the group consisting of H 2 ZrF 6 , H 2 TiF 6 and Hp 2 SiF 6 and drying said composition on said aluminum prior to contacting said film and said aluminum with said adhesive therebetween.
Claim 2
Dependent Claim
141 words
In a method for bonding a plastics resin film to aluminum comprising applying an adhesive to said film or said aluminum, drying said adhesive, contacting said film and said aluminum with said adhesive therebetween to form a laminate and subjecting said laminate to heat and pressure to bond said laminate the improvement comprising treating the surface of said aluminum to be bonded with a composition consisting essentially of an aqueous solution having from about 0.5 to about 10 grams per liter of polyacrylic acid or esters thereof and from about 0.2 to about 8 grams per liter of at least one acid selected from the group consisting of H 2 ZrF 6 , H 2 TiF 6 and Hp 2 SiF 6 and drying said composition on said aluminum prior to contacting said film and said aluminum with said adhesive therebetween.
Claim 3
Dependent Claim
16 words
The method of claim 1 wherein said polyacrylic acid esters comprise methy, ethyl and butyl esters.
Claim 4
Dependent Claim
15 words
The method of claim 1 wherein said plastics resin film comprises polyesters, polyethylenes and polypropylenes.
Claim 5
Dependent Claim
32 words
The method of claim 1 wherein said adhesive comprises one part polyurethanes, two part polyurethanes, polyethers, polyesters, two component epoxy-modified polyesters or polyurethanes, acrylics and acrylic copolymers, vinylidene chloride copolymers, and epoxies.
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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) | 1988-10-07 | 1989-04-08 | 1989-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-07 | 1993-04-08 | 1993-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-07 | 1997-04-08 | 1997-10-08 | $7700.00 | Window Closed / Lapsed |