Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing
Patent
1990-10-01
1992-12-22
Lesmes, George F.
Stock material or miscellaneous articles
Hollow or container type article
Polymer or resin containing
5216914, 405107, 405115, 428225, 428240, 428241, 428283, 428454, B32B 108, B32B 516, E02B 316
Patent
active
051733447
ABSTRACT:
An article of manufacture including an elongate confined mass of a water-swellable clay for sealing joints or seams between adjacent water-barrier materials or for plugging defects or other unsealed areas adjacent to a water-barrier layer. The elongate, confined mass of water-swellable clay is manufactured in any desired cross-sectional shape or configuration e.g. circular, eliptical, rectangular, square, and the like and can be manufactured in roll form for dispensing individual confined masses of water-swellable clay individually. The water-swellable clay is confined within a layer of material that permits the entrance of water to contact the water-swellable clay for hydration of the clay, such as by being water-porous or water-soluble and such that upon sufficient hydration of the confined mass of water-swellable clay, the confining layer will dissolve sufficiently, burst or tear to permit relatively free movement of the hydrating and expanding water-swellable clay.
REFERENCES:
patent: 4103499 (1978-08-01), Clem
patent: 4209568 (1980-06-01), Clem
patent: 4565468 (1986-01-01), Crawford
patent: 4837085 (1989-06-01), McGroarty
patent: 5041330 (1991-08-01), Heerten et al.
American Colloid Company
Brown Christopher
Lesmes George F.
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