Process for improving the mechanical and sealing properties of elastomer gaskets, joints and seals and the seal obtained with this process
AssigneeKSB Aktiengesellschaft
InventorJean-Paul Dubois
Life of this patent
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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.
Claims11
A process for the improving the mechanical properties and the sealing properties of elastomer gaskets comprising the steps of:
- preparing the elastomer by adding to an elastomer composition, at the time of the preparation phase, fibers having an average length of 2 to 12 mm;
- molding the gasket, by injection or by compression transfers, such that the orientation of the fibers in the elastomer is obtained by positioning and of tenting of the nozzle or the channel inlets into the mold cavity;
- and
- vulcanizing the gasket substantially simultaneously with said molding step.
A process for the improving of the mechanical properties and the sealing properties of elastomer gaskets comprising the steps of:
- preparing the elastomer by adding to an elastomer composition, at the time of preparation, fibers having an average length in the range of 2 to 12 mm,
- conforming a blank to obtain a finished product such that the orientation of the fibers in the interior of the blank leads to the desired orientation of the fibers in the interior of the finished product;
- and
- vulcanizing the gasket substantially simultaneously with said conforming step.
Dependencies are inferred from the claim text.