Moisture-impervious panel capable of rapid/delayed hydration

Details Moisture-impervious panel capable of rapid/delayed hydration Moisture-impervious panel capable of rapid/delayed hydration

E - Fixed Constructions

04

B

154/83, 20/38.1

E04B 1/70 (2006.01) E04C 2/52 (2006.01)

Patent

CA 2034117

ABSTRACT OF THE DISCLOSURE A rigid panel, and method of making the panel, useful as a water barrier including an intermediate layer of a water-swellable colloidal clay, such as bentonite, sandwiched between two layers of exterior sheet material, such as paperboard, including an optional intermediate support sheet, wherein at least one of the sheet materials is rigid and at least one of the exterior sheet material layers has a plurality of spaced apertures or water channels extending from the exterior of the panel to the intermediate water- swellable clay layer.

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