Patent ID: 6753065
Filing Date: 2004-06-22
Classification: B32B,C09K,E04F,G09F,Y10T

Abstract:
A wet-slip resistant sheet comprising a substrate having a surface and a back surface opposing to said surface, and a plurality of tapered protrusions of a resin composition, one end of each of which is bonded to said surface of the substrate, wherein said tapered protrusions are regularly arranged on said surface of the substrate with a specific repeating pattern and each of said protrusions is surrounded with a plurality of grooves which intersect each other,characterized in that an arrangement density (D) of said tapered protrusions is in the range between 50 protrusions/cm2 to 3,000 protrusions/cm2, a profile index (PI) of said tapered protrusions is in the range between 5 and 100, wherein the profile index (PI) is defined by the formula (1): PI=DÃ—H2â€ƒâ€ƒ(1) in which D is an arrangement density of the tapered protrusions (unit: protrusions/cm2), and H is a height of the tapered protrusions (unit: mm), and a wet-slip resistance number (a British Pendulum Tester number (BPN)), which is measured according to ASTM E-303-93, is at least 35.