Preformed sheet-like structures

Details Preformed sheet-like structures Preformed sheet-like structures

D - Textiles, Paper

06

N

18/1021, 117/28

D06N 5/00 (2006.01) B32B 11/04 (2006.01) E01D 19/08 (2006.01) E04D 5/10 (2006.01)

Patent

CA 1145109

TITLE OF THE INVENTION PREFORMED SHEET-LIKE STRUCTURES ABSTRACT OF THE DISCLOSURE A sheet-like structure comprising two layers of respective bituminous compositions, each including a polymer, one layer being substantially non-adhesive and the other layer being a pressure-sensitive adhesive and, between the layers and in intimate contact with each layer, a coating of an oil resistant material. A method of preparing the structure includes the steps of forming one of the layers, spraying onto that layer, when it is hot, an oil resistant material in liquid form, allowing the liquid to solidify so that the material forms a coating on that layer, and applying the other layer, when it is hot, to the exposed face of the coating.

353526

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