Water-swellable composite caulking material for preventing water

Details Water-swellable composite caulking material for preventing water Water-swellable composite caulking material for preventing water

1982-02-02

1983-05-10

McCamish, Marion

Stock material or miscellaneous articles

Composite

Of natural rubber

428492, 428495, 428517, 428519, 525196, 525192, 525108, B32B 2508

Patent

active

043829996

ABSTRACT:
The invention provides a novel water-swellable caulking material which is a composite body of stratified structure composed of at least one rubbery layer swellable in water comprising highly water absorbing resin dispersed in the matrix of a rubber and at least one rubbery layer not swellable in water integrally bonded together, which latter serves to resist the expansion of the former layer when swollen in water in the directions other than the direction perpendicular to the plane of the layers. The inventive caulking material can exhibit unexpectedly excellent water sealing effect with easiness in handling in addition to the rapidity in water absorption by virtue of the structure thereof preventing the expansion of the material in the directions of length and width without decreasing the expansion in the direction of thickness.

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