Patent ID: 8679623
Filing Date: 2014-03-25
Classification: B29C,B29K,Y10T

Abstract:
1. A composite article comprising a matrix formed of a mixture of glass particles and a cured polymer, and a layer of cured polymer material that is substantially free of the glass particles, said layer being formed on at least one surface of the composite article whereby the glass particles are not surface exposed on said at least one surface, and wherein the glass particles comprise: about 3 to about 8 wt %, based on the total weight of glass particles, of a first type of glass having an average particle size of less than about 0.07 mm; about 8 to about 12 wt %, based on the total weight of glass particles, of a second type of glass having an average particle size from about 0.07 mm to 0.6 mm; about 8 to about 12 wt %, based on the total weight of glass particles, of a third type of glass having an average particle size from about 0.6 mm to about 1.2 mm; about 30 to about 40 wt %, based on the total weight of glass particles, of a fourth type of glass having an average particle size from about 1.2 mm to about 2.4 mm; about 25 to about 35 wt %, based on the total weight of glass particles, of a fifth type of glass having an average particle size from about 2.4 mm to about 6.35 mm; and about 8 to about 12 wt %, based on the total weight of glass particles, of a sixth type of glass having an average particle size from about 6.35 mm to about 9.51 mm.