US5266386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Demetallizing procedure
Assignee: CAMINE RESOURCES Inc
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Filing: 1992-01-07
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Granted: 1993-11-30
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Expires: 2012-01-07
Abstract
Abstract Selective demetallization of an etchable metal film supported on a polymeric material or other microwave transparent material, particularly an etchable metal film, particularly aluminum, of thickness at least about 1 micron adhesively joined to a flexible polymeric material substrate, is described. A web of metallized polymeric material has a pattern of etchant-resistant material first applied and then the web is immersed in and passed through a bath of aqueous etchant, particularly hot aqueous sodium hydroxide solution, for a time at least sufficient to completely remove the etchable metal from non-protected areas of the web. The demetallized web is washed and dried.
Inventors
- 👤 D. Gregory Beckett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:44
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/34; B65D81/3446; C; C23; C23F; C23F1/00; C23F1/02; B65D2581/00; B65D2581/34; B65D2581/3437; B65D2581/3463; B65D2581/3467; B65D2581/3471; B65D2581/3472; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0393; H05K3/00; H05K3/02; H05K3/06; H05K3/061; H05K3/068; Y; Y10; Y10S; Y10S428/00; Y10S428/901; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24851; Y10T428/2486; Y10T428/24917; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
100 words
A novel laminate structure, comprising: a flexible polymeric substrate layer resistant to aqueous sodium hydroxide solution etchant, a layer of adhesive coextensive with said substrate resistant to aqueous sodium hydroxide solution etchant, a layer of an etchable metal comprising aluminum having a thickness of about 1 to about 15 microns overlying said adhesive layer in a pattern, a layer of aqueous sodium hydroxide solution etchant-resistant material overlying said etchable metal layer in the same pattern as said etchable metal layer, and a layer of detackifying material overlying said adhesive layer in regions thereof not overlied by said etchable metal layer.
Claim 2
Dependent Claim
100 words
A novel laminate structure, comprising: a flexible polymeric substrate layer resistant to aqueous sodium hydroxide solution etchant, a layer of adhesive coextensive with said substrate resistant to aqueous sodium hydroxide solution etchant, a layer of an etchable metal comprising aluminum having a thickness of about 1 to about 15 microns overlying said adhesive layer in a pattern, a layer of aqueous sodium hydroxide solution etchant-resistant material overlying said etchable metal layer in the same pattern as said etchable metal layer, and a layer of detackifying material overlying said adhesive layer in regions thereof not overlied by said etchable metal layer.
Claim 3
Dependent Claim
100 words
The laminate of claim 1 which is formed by: effecting selective demetallization using an aqueous etchant of a laminate of a continuous layer of said etchable metal of thickness of about 1 to about 15 microns adhesively joined to and coextensive with said flexible polymeric material layer by said adhesive layer to which said pattern of etchant-resistant material has been applied so that said aqueous etchant completely removes metal in said etchable metal layer not protected by said etchant-resistant material, and subsequently applying said layer of detackifying material to the portion of said adhesive layer exposed by said selective demetallization.
Claim 4
Dependent Claim
19 words
The laminate of claim 1 wherein said etchable metal has a thickness of about 3 to about 10 microns.
Claim 5
Dependent Claim
11 words
The laminate of claim 3 wherein said etchable metal is aluminum.
References Cited (Backward Citations)
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| 3.5 Years (Year 4) | 1996-11-29 | 1997-05-31 | 1997-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-29 | 2001-05-31 | 2001-11-30 | $3760.00 | Window Closed / Lapsed |
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