Patent ID: 6602586
Filing Date: 2003-08-05
Classification: B32B,E01C,E04F,Y10T

Abstract:
An elastic block adapted to be paved on an underlying base for absorbing impacts, said elastic block consisting essentially of a laminate composed of a monolithic powdery rubber-containing layer and a vulcanized rubber layer underlying the powdery rubber-containing layer; said powdery rubber-containing layer being a compression molded layer composed of a mixture comprising elastic chips having a particle size of 0.5 to 10 mm and a resin binder at least 5 parts by weight relative to 100 parts by weight of the elastic chips, and said vulcanized rubber layer, having a thickness of 5-60% of that of the elastic block, being a vulcanized molding of an unvulcanized rubber layer;wherein the elastic chips are fixedly bonded to one another with the resin binder and the powdery rubber-containing layer is adhered to the vulcanized rubber layer when the mixture layer and the unvulcanized rubber layer are subjected to pressurization and vulcanization; and wherein upward warping is suppressed to less than 2 mm after immersion of a lower surface portion of the elastic block in water at 40Â° C. for one month.