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AssigneeThe Goodyear Tire & Rubber Company
InventorsBryan E. Nixon, Donald W. Ward, Ronald J. Zaucha
Estimating the term…
An apparatus and method wherein strips of elastomeric material are fed separately onto a roller at more than one position around the circumference of the roller at predetermined axial locations to form predetermined cross-sectional areas of the cross section of the band. Between the positions where the strips are applied and prior to removing the band from the roller, guide means is provided to guide the strips in the predetermined axial locations. The guide means confines the strips between a circumferentially grooved guide member and the cylindrical surface and the grooved guide member may be a replaceable insert mounted in a recess of a plate for accommodating different sizes and shapes of the formed band with different inserts.
A multiple orifice roller die extrusion apparatus for combining two or more extrudable strips of elastomeric materials into a formed co-extrusion, said apparatus having a roller with an axis circumvented by a roller surface and means for rotating said roller about said axis comprising die head means positioned adjacent to and having a generally cylindrical surface conforming to said roller surface, a first orifice and a second orifice in said die head means at spaced-apart positions, said first orifice being located for applying at least a first strip of elastomeric material over said roller surface, said second orifice being located for applying at least a second strip of elastomeric material over said roller surface at said spaced-apart positions to form a single co-extrusion of the two strips and guide means extending over said roller surface for at least part of the distance between said spaced-apart positions so that said first strip is maintained in a predetermined axial location.
Extrusion apparatus for forming a co-extrusion by applying extruded strips of elastomeric material over a roller surface of a roller comprising means for guiding at least two strips applied at spaced-apart positions over said roller surface, said means for guiding including die head means positioned adjacent to and spaced from said roller surface and guide means in said die head means extending over said roller surface at least part of the distance between said spaced-apart positions to maintain said strips in predetermined axial locations relative to said roller.
A method of forming a co-extrusion formed of at least two component strips on at least one roller surface of a roller die comprising the steps of
Dependencies are inferred from the claim text.