B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 9/00 (2006.01) E02B 5/02 (2006.01) E02D 31/00 (2006.01)
Patent
CA 2089331
Abstract of the Disclosure The invention provides sealing sheeting of swellable clay impervious to water and/or oil which essentially consist of a porous material, in whose pores swellable clay is lodged and which on either side are provided with covering layers, of which at least one consists of a water-soluble coating. Such sealing sheeting has water permeability coefficients in its overlap joins which are of the same order as in the sealing sheeting it- self. Furthermore in situ needle punching of the overlapped join is possi- ble in order to produce a strong composite structure providing that one overlapped join is produced by sealing sheeting, which has a non-woven material as a porous substrate material.
Heerten Georg
Macrae & Co.
Naue-Fasertechnik Gmbh & Co. Kg
LandOfFree
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