Waterproofing system
AssigneeSika Technology AG
InventorsDario Caviezel, Wolf-Rüdiger Huck, Herbert Ackermann
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Abstract
A waterproofing system including a functional layer S1 including 10-80 wt.-% of at least one thermoplastic polymer P1 and 10-80 wt.-% of at least one solid particulate filler F, wherein the surface of the functional layer S1 has an Auto-correlation length of waviness W(Sal) of at least 50 μm. Further, a method for producing a waterproofing system and to the use of a mechanical surface treatment step to increase the waviness factor, determined as the ratio of the Root mean square roughness of waviness W(Sq) to the square of the Auto-correlation length of waviness W(Sal), of a surface of a functional layer S1.
Claims7
A method for producing a waterproofing system comprising (i) a functional layer S1 having a first major surface and a second major surface, and (ii) a barrier layer S2 having a first major surface bonded to the second major surface of the functional layer S1, the first major surface of the functional layer S1 being not bonded to the barrier layer S2, the method comprising:
- a least one of extruding and calendering a first thermoplastic composition to form the functional layer S1;
- and
- subjecting the first major surface of the functional layer S1 to a mechanical surface treatment step selected from the group consisting of grinding, brushing, and abrasive blasting,
- wherein the first thermoplastic composition comprises:
- a) 10-80 wt.-%, of at least one thermoplastic polymer P1, and
- b) 10-80 wt.-%, of at least one solid particulate filler F, the proportions being based on a total weight of the first thermoplastic composition.
Dependencies are inferred from the claim text.