Sealing sheeting of swellable clay impervious to water and/or oi

Details Sealing sheeting of swellable clay impervious to water and/or oi Sealing sheeting of swellable clay impervious to water and/or oi

1993-03-17

1995-07-04

Calvert, John J.

Textiles: manufacturing

Textile product fabrication or treatment

Fiber entangling and interlocking

156276, 405 38, 405107, 112420, 428234, 428235, E02B 316, E02B 3100, B32B 530, B32B 524, B32B 506, C09K 310

Patent

active

054288770

ABSTRACT:
A method is provided for the continuous production of sealing sheeting impervious to water and/or oil, in the case of which between a substrate layer and a non-woven material covering layer a swellable clay is needle punched in position, a swellable clay additionally strewn on the top side of the covering layer being at the same time incorporated in the covering layer. After this the swellable clay present in the covering is moistened and dried again. In accordance with a modified form of the invention use is only made of a substrate consisting of a non-woven material, a woven fabric, a knitted fabric and/or a film, the film being a synthetic resin film, a synthetic resin film reinforced with fabric or paper, and a large pored non-woven material or a non-consolidated intersecting fiber crimped non-woven material or a random fiber non-woven material on which the pulverulent swellable clay is strewn, incorporated by needle punching, moistened and dried. However instead of needle punching it is possible for knitting and/or sewing to be utilized.

REFERENCES:
patent: 4501788 (1985-02-01), Clem
patent: 4810573 (1989-03-01), Harriett
patent: 5041330 (1991-08-01), Heerten et al.
patent: 5091234 (1992-02-01), McGroarty et al.
patent: 5174231 (1992-12-01), White
patent: 5221568 (1993-06-01), Heerten et al.
patent: 5237945 (1993-08-01), White
patent: 5246770 (1993-09-01), Bottiglione et al.

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