Patent ID: 6514888
Filing Date: 2003-02-04
Classification: B30B,B32B,H05K,Y10S,Y10T

Abstract:
A cushioning pad used for manufacturing a laminate by a hot press and interposed between the entire surface of the laminate and a heating platen in order to apply uniform pressure and heat to the entire surface of the laminate to be pressed, comprising:(a) two or more fiber material layers, said layers comprising non-woven fabric, a woven fabric, or paper; (b) a bonding material layer positioned between each of the fiber material layers for bonding upper and lower fiber material layers; (c) an upper rubber layer positioned on an upper surface of the uppermost of said fiber material layers, and (d) a lower rubber layer positioned on a lower surface of the lowermost of said fiber material layers, said upper and lower rubber layers being so constituted that weight loss of ten percent (10%) by thermal decomposition occurs at a temperature of at least 380Â° C., and (e) an upper releasing layer positioned on an upper surface of the upper rubber layer for preventing exudation of a compounding agent contained in the upper rubber layer, said layers being adhered without any adhesive agent layer; and (f) a lower releasing layer positioned on a lower surface of the lower rubber layer for preventing exudation of a compounding agent contained in the lower rubber layer, said layers being adhered without any adhesive agent layer, said releasing layers (e) and (f) being selected from the group consisting of synthetic resin film, metal film, woven fabric, and paper.