Composite water barrier sheet

Details Composite water barrier sheet Composite water barrier sheet

1989-06-30

1992-02-25

Bell, James J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

405107, 405116, 428150, 428246, 428252, 428283, 428284, 428331, 428913, D06N 704

Patent

active

050912348

ABSTRACT:
A water barrier sheet that is a composite of a membrane of impervious material, such as high density polyethylene, a layer of particles which are capable of swelling in presence of a liquid, such as sodium montmorillonite, or modified sodium montmorillonite that is organophilic held on the membrane, and an overlying sheet of water permeable material that is caused to adhere to the particulate layer. The water permeable material layer is a cloth sheet that tends to keep the layer of particulate material together and protects the particles from mechanical abrasion, and yet permits liquids to penetrate into the layer of particulates for waterproofing action.

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patent: 4530869 (1985-07-01), Tesch
patent: 4622260 (1986-11-01), Tesch
patent: 4693923 (1987-09-01), McGroarty et al.
patent: 4733989 (1988-03-01), Harriett
patent: 4815963 (1989-03-01), Berkout

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