Root-resistant base layer

Details Root-resistant base layer Root-resistant base layer

1994-12-21

1997-08-12

Lee, Helen

Stock material or miscellaneous articles

Structurally defined web or sheet

Including aperture

428138, 428340, 428457, 428458, 428489, 442378, B32B 310, D04H 108

Patent

active

056563540

ABSTRACT:
Described is a multilayered base layer comprising at least one textile layer and at least one copper layer which are joined together by needling, wherein the puncture holes produced in the copper layer by the needling have a diameter of not more than 1 mm, and a process for producing it.
Also described is the use of this layer as a starting material for producing bituminized sealing felts and also the use of the multilayered base layer and of the bituminized sealing felts produced therefrom for discharging electrostatic charges.

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