US3769129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making an embossed composite sheet
Assignee: United States Steel Corp
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Filing: 1968-03-29
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Granted: 1973-10-30
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Expires: 1988-03-29
Abstract
Abstract Method of making an embossed composite sheet including the steps of making an assembly of a base layer and a face layer with a layer of adhesive therebetween, heating the assembly to a temperature at which the adhesive is plastic, placing an embossing sheet having the desired pattern thereon on the face layer, and then exerting sufficient pressure on the embossing sheet while the assembled layers are so heated to impress the pattern on said face layer.
Inventors
- 👤 A Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:53
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; B21; B21H; B21H8/00; B21H8/005; B32B38/00; B32B38/0036; B32B7/00; B32B7/04; B32B7/12; B44; B44C; B44C3/00; B44C3/08; B44C3/085; B32B2309/00; B32B2309/08; B32B2309/10; B32B2309/105; B32B2309/12; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1023; Y10T156/1039; Y10T156/1041
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
117 words
The method of making an embossed composite sheet which comprises providing a relatively flat base layer, providing a layer of plastic adhesive on said base layer, providing a relatively flat face metal layer on said adhesive, providing an embossing sheet having the desired embossing pattern thereon on said face layer, said embossing sheet being of such size as to cover the entire surface to be embossed, then passing the base layer, the plastic adhesive, the face metal layer and embossing sheet between a pair of smooth rolls to apply pressure on said embossing sheet while the adhesive is plastic to impress said pattern on said face layer, and then separating said embossing sheet from said composite sheet.
Claim 2
Independent Claim
117 words
The method of making an embossed composite sheet which comprises providing a relatively flat base layer, providing a layer of plastic adhesive on said base layer, providing a relatively flat face metal layer on said adhesive, providing an embossing sheet having the desired embossing pattern thereon on said face layer, said embossing sheet being of such size as to cover the entire surface to be embossed, then passing the base layer, the plastic adhesive, the face metal layer and embossing sheet between a pair of smooth rolls to apply pressure on said embossing sheet while the adhesive is plastic to impress said pattern on said face layer, and then separating said embossing sheet from said composite sheet.
Claim 3
Dependent Claim
26 words
The method of claim 1 in which said adhesive layer has a thickness at least as thick as the depth of the pattern on said sheet.
Claim 4
Dependent Claim
35 words
The method of claim 1 in which said adhesive is thermoplastic, and which method includes the step of heating said layers prior to application of pressure to a temperature at which said adhesive is plastic.
Claim 5
Dependent Claim
35 words
The method of claim 2 in which said adhesive is thermoplastic, and which method includes the step of heating said layers prior to application of pressure to a temperature at which said adhesive is plastic.
Claim 6
Dependent Claim
64 words
The method of claim 1 including the steps of uncoiling the base layer from a coil, uncoiling the flat metal layer from a coil and bringing the base layer and metal layer together with said adhesive therebetween, uncoiling the embossing sheet from a coil and positioning it on said flat metal layer, and coiling the embossed composite sheet after separating from the embossing sheet.
Claim 7
Dependent Claim
62 words
The method of claim 5 in which the layer of plastic is at least as thick as the depth of the pattern on the sheet and is provided by placing it on adjacent sides of said base layer and metal layer prior to Bringing them together, and which method includes the step of heating said layers with adhesive thereon prior to rolling.
References Cited (Backward Citations)
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US2830001A
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US2817618A
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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) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |