Process for improving the mechanical and sealing properties of e

Details Process for improving the mechanical and sealing properties of e Process for improving the mechanical and sealing properties of e

1995-05-16

1996-07-02

Szekely, Peter A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524 35, 524494, 524495, 524496, 524184, C08L 102, C08L 2302, C08K 347, C08K 304

Patent

active

055322999

ABSTRACT:
A process for the improving the mechanical properties and the sealing properties of elastomer gaskets. The elastomer is prepared by adding to an elastomer composition, at the time of the preparation phase, fibers having an average length on the order of 2 to 12 mm. The elastomer is molded, by injection or by compression transfer, such that the orientation of the fibers in the elastomer is obtained by positioning and orienting of the nozzle or the channel inlets into the mold cavity. The fibers, embedded in the elastomer have an orientation that is, parallel to a surface against which a ridge of the closure device comes into contact and perpendicular to the closure device when the butterfly valve is shut.

REFERENCES:
patent: 3853796 (1974-12-01), Oldack et al.
patent: 4514541 (1985-04-01), Frances
patent: 4837281 (1989-06-01), Hibbard et al.
International Standard ISO 1629, Second Edition 1987-Dec.-01.

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