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

1976-09-12

1978-09-12

Hoag, Willard E.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

To produce composite, plural part or multilayered article

264263, 264266, 264267, 264314, 264328, B29D 302, B29G 700

Patent

active

041138252

ABSTRACT:
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 elastomeric material are protected from the deleterious effects of silicone fluid by sealing rings of elastomeric material such as fluorosilicone which is resistant thereto. The rings, which are rectangular in cross section and are made of uncured, deformable 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 cylindrical surfaces of the sleeve over an area of substantial width.

REFERENCES:
patent: 3258384 (1966-06-01), Scott
patent: 3435500 (1969-04-01), Aser et al.
patent: 3613168 (1971-10-01), Rowland et al.
patent: 3941635 (1976-03-01), Tavelle et al.

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