Title: Protective layer for surface seals in building construction, underground construction, and civil engineering construction

What is claimed is:

1. A process for the continuous production of a protective covering, wherein a first topcoat layer is applied as a soft PVC plastisol onto an endless carrier web at room temperature; gelling is initiated during a short-term heat application of about 160°-200° C.; whereupon a second topcoat layer is applied to the first topcoat layer and a lattice-like fabric is placed on said second topcoat layer, which is still in the un-gelled condition; then gelling is initiated in the first and second topcoat layers by heating in a temperature range of between 160° C. and 250° C., while simultaneously the bonding to the lattice-like fabric is taking place, said lattice-like fabric being a resilient fabric having fibers joined together at junctions that yield under the effect of a load, and said topcoat layers having differing composition, the first topcoat layer having a higher weatherability due to the addition of stabilizers and a lower filler content as compared to the second topcoat layer.

2. The process according to claim 1, wherein the PVC plastisol contains from 30 to 50% by weight of a plasticizer for PVC.


Other info:


Inventors: Haage, Karl (Troisdorf-Spich, DE)
Scharff, Dieter (Troisdorf-Sieglar, DE)

Application Number: 06/155000
Filing Date: 1980-05-30
Publication_date: 1981-10-20
Assignee: DYNAMIT NOBEL AG

Primary Class(es): 156/315 156/307.100, 156/247, 156/307.500
Other Classes: E04D5/10; E04D11/02; E04D5/00; E04D11/00; C09J5/02; C09J5/04
US Patent Ref:

3381718	May, 1968	Darrow	138/141	Lined concrete pipe
3660200	May, 1972	Anderson et al.	156/322	PROCESS FOR BONDING PREHEATED THERMOPLASTIC FILM TO A DISSIMILAR SUBSTRATE
3733239	May, 1973	George	428/247
3736202	May, 1973	Sorenson	156/322
3849226	November, 1974	Butz	156/307.1	PRODUCING FIBER REINFORCED RESIN PANELS WITH GELCOAT FIBER LAYER AND LACQUER PROTECTIVE
3928696	December, 1975	Wandel et al.	428/255	Stitched webs of fleeces of synthetic fibers and method of making same
3992842	November, 1976	Haage et al.	428/285	Roof construction of a plurality of thermoplastic composite sheets with inorganic flameproofing laye
4113907	September, 1978	Haage et al.	428/193	Fabric-reinforced sealing sheets

Other Refs: DE1264020DE1659300FR1410586FR2032239GB1219501GB1314541

March, 1968
January, 1971
October, 1964
November, 1970
January, 1971
April, 1973

Primary Examiner: Lesmes, George F.
Assistant Examiner: Buffalow, Rollins E.
Attorney: Craig, And Antonelli