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AssigneeUniroyal, Inc.
InventorsJan Janusz Boguslawski, Paul Geyer, Frederick Nishwitz Taff
Estimating the term…
Method and apparatus for coating a fabric with elastomeric stock, wherein improved impregnation of the interstices of the fabric is achieved, the method comprising concomitantly feeding both elastomeric stock and a fabric in pressurized contact with one another between mutually confronting stationary and movable surfaces. The mutually confronting surfaces converge toward one another and cooperatively define a pressure chamber terminating in a restriction orifice. The movable surface is driven in a direction of feed of both the stock and fabric to frictionally carry and wedge both into and through the pressure chamber, thereby causing the interstices of the fabric to be increasingly impregnated by the stock.
Apparatus for coating a warp and weft cord fabric with elastomeric stock wherein improved impregnation of the interstices between the warp and weft cords of the fabric is achieved, said apparatus comprising a roller, a primary and a secondary die segment each having a respective elastomeric stock wedging surface confronting said roller in spaced relation, said wedging surface of said primary die segment and a confronting arcuate segment of said roller cooperatively defining a convergent pressure chamber terminating in a restriction orifice which normally of said fabric is of wider extent than the thickness of said fabric, means for introducing a fabric into said chamber and onto said arcuate segment of said roller to be carried by the latter to and through said restriction orifice, means for introducing elastomeric stock under pressure generally in the direction of advancement of and upon said fabric upstream of said chamber to at least partially impregnate interstices of said fabric upstream of said chamber, said secondary die segment abutting said primary die segment upstream of the latter and being spaced more remotely from said roller than said primary die segment, said wedging surface of said secondary die segment defining with said roller the region under pressure in which said stock at least partially impregnates said fabric upstream of said chamber, and drive means for rotating said roller to frictionally carry and wedge both said fabric and the stock already having at least partially impregnated the interstices of said fabric into and through said chamber whereupon said stock increasingly impregnates the interstices in as well as the warp and weft cords of said fabric under increasing pressure in excess of the pressure at which said stock is initially urged by said wedging surface of said secondary die segment against said fabric upstream of said chamber and undergoes a reduction in cross-sectional thickness, said chamber having an elongate extent sufficient to enable said stock to resist substantial swelling after the latter issues with said fabric from said restriction orifice.
Dependencies are inferred from the claim text.