US3593848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foam-covered coil and methods of manufacturing the same
Assignee: Atlas Coatings Corp
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Filing: 1968-02-26
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Granted: 1971-07-20
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Expires: 1988-02-26
Abstract
Abstract The present invention relates to methods, particularly suited for the coil-coating industry, for continuously covering and permanently bonding a heat stable plastic foam to a metal web traveling at comparatively high speeds of up to 300 feet per minute through coil-baking ovens having ambient atmospheres above 400* F. The metal web may be an unwound coil of steel or aluminum, and the foam may be expanded polyvinyl chloride. The foam-covered metal coil product of the invention, which may include a plastic film laminated thereto, is suited for postforming by stamping, bending, crimping, roll forming, or the like.
Inventors
- 👤 Arthur H Landau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:02
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/14; B05D7/16; B05D7/50; B05D7/52; B05D7/54; B05D7/546; B05D2252/00; B05D2252/02; Y; Y10; Y10S; Y10S428/00; Y10S428/906; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24521; Y10T428/249921; Y10T428/249953; Y10T428/249982; Y10T428/249985; Y10T428/249987; Y10T428/24999; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/266
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
61 words
The process of claim 1, further characterized in that a. said plastisol coated web is subjected to said elevated temperatures of step (i) in two distinct heating stages separated by a cooling stage, the first of which heating stages causes said plastisol to partially cure without expansion and the second of which heating stages causes said partially cured plastisol to expand.
Claim 2
Dependent Claim
21 words
The process of claim 2, in which a. said partially cured plastisol is printed and clear coated before it is expanded.
Claim 3
Dependent Claim
19 words
The process of claim 6, in which a. said partially cured plastisol is clear coated before it is expanded.
Claim 4
Dependent Claim
18 words
The process of claim 3, in which a. an expansion inhibiting ink is employed in said printing step.
Claim 5
Dependent Claim
158 words
A wound coil of post-formable multilayered structural sheet metal comprising a. a base web of continuous sheet metal coil having a thickness of approximately 0.006 inch to 0.060 inch and width of approximately 6-60 inches providing substantially all the strength and properties of said structural material, said metal selected from the group consisting of steel, aluminum, and galvanized steel, b. a prime coat covering one surface of said base web, c. a continuous coating on the other surface of the web, d. a continuously cast and cured in situ layer of heat stable, foamed polyvinyl chloride plastic permanently bonded to said metal through said prime coat, e. said bonded foam layer being obtained by first heating in situ foamable PVC liquid plastic, said plastic including 100 parts polyvinyl chloride resin, 40-125 parts plasticizer for said polyvinyl chloride resin, 0.25-10 parts chemical blowing agent for said polyvinyl chloride resin, and 1-10 parts stabilizing activator for the resin-plasticizer-blowing agent combination.
Claim 6
Dependent Claim
13 words
The material of claim 6 in which a. said plastic layer is embossed.
Claim 7
Dependent Claim
17 words
The material of claim 6 in which a. said plastic layer is covered with a clear coating.
Claim 8
Dependent Claim
14 words
The material of claim 6 in which a. said other surface coating is paint.
Claim 9
Dependent Claim
179 words
A wound coil of post-formable, expandable structural material comprising a. a base web of metal coil having a thickness of approximately 0.006 to 0.060 inch and a width of approximately 6 to 60 inches, said web providing substantially all the strength properties of said structural material, b. a nondelaminable prime resin coat of 0.2-0.5 mils on one side and a continuous coating on the other side of said coil, c. a continuously cast and cured in situ layer of fused, heat stable, expandable PVC plastic permanently bonded through said primer to said metal, said plastic including a blowing agent and having predetermined gas evolving properties directly correlated to the thermodynaMic properties of said metal, said plastic including 100 parts polyvinyl chloride resin, 40-125 parts plasticizer for said polyvinyl chloride resin, 0.25-10 parts chemical blowing agent for said polyvinyl chloride resin, and 1-10 parts stabilizing activator for the resin-plasticizer-blowing agent combination, d. whereby said coil and fused plastic may be subsequently unwound and said plastic may be expanded by heating it to a temperature sufficient to activate said blowing agent.
Claim 10
Dependent Claim
19 words
The material of claim 10 in which a. said plastic is printed with an inhibiting ink and clear coated.
Claim 11
Dependent Claim
31 words
The process of claim 1 which further includes the step of a. coating the undersurface of said rapidly moving web with a continuous coating of paint between steps (a) and (i).
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) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |