EP 0555800 B1 19950503 - Water and/or oil impervious membrane with swellable clay.
Title (en)
Water and/or oil impervious membrane with swellable clay.
Title (de)
Wasser- und/oder ölundurchlässige Dichtungsmatte aus quellfähigem Ton.
Title (fr)
Membrane imperméable à l'eau et/ou à l'huile comportant une argile expansible.
Publication
Application
Priority
DE 4203861 A 19920211
Abstract (en)
[origin: EP0555800A1] A water- and/or oil-impervious membrane is provided, which consists essentially of a porous material in the pores of which swellable clay is incorporated and which is provided with cover layers on both sides, at least one of which cover layers consists of a water-soluble film. Membranes of this kind have, even in the overlapping region, water permeability coefficients which are of the order of magnitude of the water permeability coefficients of the membrane itself. In addition, it is possible to needle the overlapping regions in situ in order to produce a friction-locking bond, provided that an overlapping region originates from a membrane which has a nonwoven fabric as porous supporting material.
IPC 1-7
IPC 8 full level
E02B 3/16 (2006.01); E02D 31/00 (2006.01)
CPC (source: EP)
E02D 31/004 (2013.01)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI LU NL SE
DOCDB simple family (publication)
EP 0555800 A1 19930818; EP 0555800 B1 19950503; AT E122120 T1 19950515; CA 2089331 A1 19930812; CZ 385392 A3 19930915; DE 4203861 A1 19930812; DE 59300170 D1 19950608; MX 9300720 A 19931101; SK 385392 A3 19941207
DOCDB simple family (application)
EP 93101929 A 19930208; AT 93101929 T 19930208; CA 2089331 A 19930211; CS 385392 A 19921223; DE 4203861 A 19920211; DE 59300170 T 19930208; MX 9300720 A 19930210; SK 385392 A 19921223