HIGH-STRENGTH SILICONE SPONGE ROLL AND METHOD FOR MAKING SAME
Original Publication Date: 1980-Apr-30
Included in the Prior Art Database: 2004-Apr-02
Xerox Disclosure Journal
This invention relates to a method for making a high-strength, foraminous silicone sponge roll having a predetermined distribution of cell sizes and close tolerance on the overall dimensions of the foamed roll. The method comprises mixing urea beads of predetermined size distribution with high-strength silicone rubber matrix, curing the resultant mixture in a closed mold and then leaching out the urea beads by washing with water to obtain the high-strength silicone sponge structure. High-strength silicone rolls made according to the present invention are useful, for example, as donor rolls for applying silicone oil to a fuser roll in an electrostato-graphic copying machine.