ANTISLIP SHEET MATERIAL HAVING TAPES AND MONOFILAMENTS

摘要

A sheet material with an anti-skid surface, suitable for use as a roofing underlayment or wrapper, comprises a scrim made of woven plastic tapes with monofilaments that are round in cross-section and have a diameter larger than the thickness of the plastic tapes interwoven with the tapes. The monofilaments form ridges on the sheet material that impart an enhanced coefficient of friction to it. The monofilaments may be incorporated in the weave in the warp or weft directions or both.

主权项

1. A sheet of material having an anti-skid surface, comprising:
a first set of tapes generally parallel to each other; a second set of tapes generally parallel to each other and perpendicular to the first set of tapes; the tapes being extruded, flat plastic tapes having a width greater than their thickness; the tapes of the first set and of the second set being interwoven with each other to form a scrim; a first set of plastic monofilaments generally parallel to the first set of tapes, each said filament being interwoven with the tapes of the second set; the monofilaments being generally round in cross-section and having a diameter greater than the thickness of the tapes and forming anti-skid ridges on the surface of the sheet; and a waterproof film bonded to the scrim.