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HIGH-STRENGTH SILICONE SPONGE ROLL AND METHOD FOR MAKING SAME

IP.com Disclosure Number: IPCOM000024302D
Original Publication Date: 1980-Apr-30
Included in the Prior Art Database: 2004-Apr-02
Document File: 2 page(s) / 44K

Publishing Venue

Xerox Disclosure Journal

Abstract

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.

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HIG H-STR ENGTH SILICONE SPONGE Proposed Classification

U.S. C1. 118/58 Int. Cl. B05c 11/00

D METHOD FOR MAKING SAME

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.

Volume 5 Number 2 March/April 1980 147

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148

  XEROX DISCLOSURE JOURNAL Volume 5 Number 2 March/April 1980

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