Method of sealing the ends of an elastomeric roll

Details Method of sealing the ends of an elastomeric roll Method of sealing the ends of an elastomeric roll

F - Mech Eng,Light,Heat,Weapons

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F16J 15/10 (2006.01) B29C 45/14 (2006.01) B29C 70/68 (2006.01) G03G 15/20 (2006.01)

Patent

CA 1061823

ABSTRACT OF THE DISCLOSURE In a fuser roll for electrostatic copying machines comprising a cylindrical metal core surrounded by a cylindrical body of elastomeric material having an outside cylindrical sleeve of protective material, the end surfaces of the elasto- meric material are protected from the deleterious effects of silicone fluid by sealing rings of elastomeric material such as flurosilicone which is resistant thereto. The rings, which are rectangular in cross section and are made of uncured, de- formable material, are inserted in the ends of the sleeve with the ends of the sleeve protruding. The sleeve is assembled with the metal core and placed in a cylindrical mold. Silicone rubber is injected into the space between the core and the sleeve and the sleeve and rings are expanded into contact with the mold wall. The roll is then cured. In the finished cured rolls, the rings are bonded to the end surfaces of the silicone rubber body, and to the metal core, and to the interior cylin- drical surfaces of the sleeve over an area of substantial width.

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