Patent ID: 7484618

Claim:
A conveyor belt structure for conveying heated, tacky materials, said belt comprising: a) a lower woven cotton fabric layer; b) a first intermediate fabric layer formed solely of woven polyester yarns and overlying the lower cotton fiber layer; c) a second intermediate fabric layer formed solely of woven polyester yarns and overlying the first intermediate fabric layer; d) an upper woven cotton fabric layer overlying the second intermediate fabric layer, wherein the upper fabric layer includes an upwardly-facing surface for receiving material to be conveyed by the belt, the upwardly-facing surface including a layer of silicone-based release material to minimize adhesion of conveyed material to the upper fabric layer; e) wherein adjacent layers are joined together by a rubber-based joinder material that is vulcanized to firmly bind together the adjacent layers to form a unitary belt structure, wherein each of the intermediate fabric layers positioned between the upper and lower cotton fabric layers is formed solely of woven polyester yarns, and wherein the belt conveys heated materials having a temperature greater than 300° F. without substantial stretching, wherein the intermediate woven polyester fabric layers have a thickness of from 0.032 inches to 0.036 inches, a weight of from 17.6 oz/yd 2 to 19.6 oz/yd 2 , and a heat sealed selvage.