Patent ID: 6210620
Filing Date: 2001-04-03
Classification: B29C,B29K,B29L,E01B,Y10S

Abstract:
A method for making a rubber molded piece utilizing a heatable plate molding press having a lower part defining a plurality of mold cavities therein and a lateral edge and having an upper part defining a plate, the method comprising the steps of:placing an open mesh fabric on said lower part so as to cover all of said mold cavities and to extend to said lateral edge of said lower part;placing a plate of green rubber on said fabric;closing and heating said heatable plate molding press while leaving a gap between said plate of green rubber and said lateral edge communicating with the ambient whereby the plasticized green rubber penetrates said open mesh fabric to fill said mold cavities and is vulcanized; and,conducting air and other gas from said mold cavities through said threads of said open mesh fabric to said lateral edge of said lower part and through said gap to the ambient thereby facilitating filling said mold cavities with said green rubber to form projections on said rubber molded piece and to embed said fabric in the rubber molded piece formed thereby to provide a reinforcement therefor.