Stock material or miscellaneous articles – Structurally defined web or sheet – Continuous and nonuniform or irregular surface on layer or...
Patent
1981-02-27
1982-06-22
Thibodeau, Paul J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Continuous and nonuniform or irregular surface on layer or...
156209, 156247, 427203, 428 40, 428161, 428213, 428323, 428331, 4284246, B32B 328, B32B 516
Patent
active
043362931
ABSTRACT:
An anti-slip mat is provided having a bottom surface adapted to permit the mat to lie flat on a flat surface and an opposite regularly undulated top surface characterized by having raised portions and depressed portions and being coated with an abrasive, anti-slip layer. A preferred method of forming such a mat includes steps of forming a layer of primer resin on a release liner, coating one surface of the primer resin layer with liquid curable polyurethane adhesive resin, distributing abrasive grain over the polyurethane resin layer while it is still liquid, at least partially curing the polyurethane resin, coating the resultant grain-coated surface with liquid curable polyurethane resin, curing the resultant coating, removing the release liner, forming an embossable sheet of a polymeric composition, contacting one surface of the polymeric sheet with the surface of the primer resin layer opposite the abrasive surface to provide a laminated structure and embossing the laminated structure to provide the mat.
REFERENCES:
patent: 2975089 (1961-03-01), Hargreaves
patent: 3016317 (1962-01-01), Brunner
patent: 3227604 (1966-01-01), Morgan
patent: 3578550 (1971-05-01), Hoerner et al.
patent: 3895153 (1975-07-01), Johnston et al.
patent: 4060947 (1977-12-01), Naka
patent: 4210693 (1980-07-01), Regan et al.
patent: 4250219 (1981-02-01), Pogoda
Alexander Cruzan
Francis Richard
Minnesota Mining and Manufacturing Company
Sell Donald M.
Thibodeau Paul J.
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