US4015046A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printing blanket and method of making same
Assignee: Day International Inc
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Filing: 1976-02-23
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Granted: 1977-03-29
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Expires: 1996-02-23
Abstract
Abstract A printing blanket and method of making same is provided wherein such blanket comprises a base structure, a surface layer made of a fluorocarbon elastomer, and a binder layer comprised of a polychloroprene elastomer which provides optimum adhesion between the base structure and the surface layer.
Inventors
- 👤 Melvin D. Pinkston
- 👤 Robert L. Hartenstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:12
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/12; B32B27/30; B32B27/304; B32B27/32; B32B27/322; B41; B41N; B41N10/00; B41N10/02; B41N10/04; B32B2264/00; B32B2264/10; B32B2264/102; B32B2327/00; B32B2327/12; B41N2210/00; B41N2210/02; B41N2210/04; B41N2210/10; B41N2210/14; Y; Y10; Y10S; Y10S428/00; Y10S428/909; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T428/31855; Y10T428/31909; Y10T428/31928; Y10T428/31935
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
83 words
A printing blanket comprising a base structure, a surface layer made of a fluorocarbon elastomer, and a binder layer; said binder layer being comprised of 100 parts of polychloroprene elastomer, 5 to 20 parts of a resin binder, and 30 to 50 parts of a hydrated silica, said binder serving as an exciter and said hydrated silica serving as a vehicle in said binder layer, said binder layer providing a tenacious bond and optimum adhesion between said surface layer and said base structure.
Claim 2
Dependent Claim
83 words
A printing blanket comprising a base structure, a surface layer made of a fluorocarbon elastomer, and a binder layer; said binder layer being comprised of 100 parts of polychloroprene elastomer, 5 to 20 parts of a resin binder, and 30 to 50 parts of a hydrated silica, said binder serving as an exciter and said hydrated silica serving as a vehicle in said binder layer, said binder layer providing a tenacious bond and optimum adhesion between said surface layer and said base structure.
Claim 3
Dependent Claim
18 words
A printing blanket as set forth in claim 1 in which said base structure comprises a fabric layer.
Claim 4
Dependent Claim
20 words
A printing blanket as set forth in claim 1 in which said base structure comprises a plurality of fabric layers.
Claim 5
Dependent Claim
24 words
A printing blanket as set forth in claim 1 in which said base structure comprises at least one fabric layer and a compressible layer.
Claim 6
Dependent Claim
18 words
A printing blanket as set forth in claim 1 in which said resin binder is an epoxy resin.
Claim 7
Dependent Claim
26 words
A printing blanket as set forth in claim 1 in which said fluorocarbon elastomer is a compound including magnesium oxide, thermal black, and a polyfunctional amine.
Claim 8
Dependent Claim
25 words
A printing blanket as set forth in claim 1 in which said fluorocarbon elastomer is a compound including magnesium oxide, titanium dioxide, and polyfunctional amine.
Claim 9
Dependent Claim
22 words
A printing blanket as set forth in claim 1 in which said fluorocarbon elastomer is a copolymer of hexafluoropropylene and vinylidene fluoride.
Claim 10
Dependent Claim
22 words
A printing blanket as set forth in claim 1 in which said fluorocarbon elastomer is a copolymer of chlorotrifluoroethylene and vinylidene fluoride.
Claim 11
Dependent Claim
19 words
A printing blanket as set forth in claim 1 in which said fluorocarbon elastomer has more than 63% fluorine.
Claim 12
Dependent Claim
93 words
A printing blanket as set forth in claim 1 in which said binder layer comprises; a polymeric blend comprised of roughly 50 parts by weight of polychloroprene and roughly 50 parts by weight of a polymer from the group consisting of chlorinated polyethylene, acrylonitrile, polysulfide, and chlorosulfonated polyethylene; 5 to 20 parts of a resin binder; and 30 to 50 parts of a hydrated silica; said resin binder serving as an exciter and said hydrated silica serving as a vehicle which provides a tenacious bond between said fluorocarbon elastomer and said base structure.
Claim 13
Dependent Claim
44 words
A printing blanket as set forth in claim 1 and further comprising an acrylonitrile layer between the base structure and the polychloroprene layer, said acrylonitrile layer serving as a barrier preventing said binder layer from being attacked by fluids permeating through said base structure.
Claim 14
Dependent Claim
27 words
A printing blanket as set forth in claim 12 in which said acrylonitrile layer has a thickness generally of the order of several thousandths of an inch.
Claim 15
Dependent Claim
27 words
A printing blanket as set forth in claim 12 in which said binder and surface layers have a total thickness ranging between 0.001 inch and 0.040 inch.
Claim 16
Dependent Claim
29 words
A printing blanket as set forth in claim 12 in which said surface layer has a thickness of approximately one-half the combined thickness of said binder and surface layers.
Claim 17
Dependent Claim
95 words
A printing blanket as set forth in claim 1 in which said binder layer comprises; a polymeric blend comprised of 50 to 99 parts by weight of polychloroprene with the balance of said polymeric blend being a polymer from the group consisting of chlorinated polyethylene, acrylonitrile, polysulfide, and chlorosulfonated polyethylene, 5 to 20 parts of a resin binder; and 30 to 50 parts of a hydrated silica; said resin binder serving as an exciter and said hydrated silica serving as a vehicle which provides a tenacious bond between said fluorocarbon elastomer and said base structure.
Claim 18
Dependent Claim
26 words
A printing blanket as set forth in claim 16 in which said fluorocarbon elastomer is a compound including magnesium oxide, carbon black, and a polyfunctional amine.
Claim 19
Dependent Claim
27 words
A printing blanket as set forth in claim 16 in which said fluorocarbon elastomer is a compound including magnesium oxide, a non-black filler, and a polyfunctional amine.
Claim 20
Independent Claim
98 words
A method of making a printing blanket comprising the steps of forming a base structure, applying on said base structure a binder layer comprised of a polychloroprene elastomer having adhesion promoters therein, said binder layer being compounded from materials comprising at least 50 parts by weight of polychloroprene elastomer, 5 to 20 parts by weight of resin binder, and 30 to 50 parts by weight of hydrated silica, and disposing a surface layer made of a fluorocarbon elastomer on said binder layer by building up consecutive thin layers until a desired thickness for said surface layer is attained.
Claim 21
Independent Claim
98 words
A method of making a printing blanket comprising the steps of forming a base structure, applying on said base structure a binder layer comprised of a polychloroprene elastomer having adhesion promoters therein, said binder layer being compounded from materials comprising at least 50 parts by weight of polychloroprene elastomer, 5 to 20 parts by weight of resin binder, and 30 to 50 parts by weight of hydrated silica, and disposing a surface layer made of a fluorocarbon elastomer on said binder layer by building up consecutive thin layers until a desired thickness for said surface layer is attained.
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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) | 1980-03-28 | 1980-09-27 | 1981-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-28 | 1984-09-27 | 1985-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-28 | 1988-09-27 | 1989-03-29 | $7700.00 | Window Closed / Lapsed |