Laminar ball

Abstract

A laminar ball includes a spherical rubber core member, a reinforcing thread layer formed of a mixture of threads and latex and surrounding the spherical rubber core member to have the latex be bonded with the spherical rubber core member, an outer rubber layer surrounding the reinforcing thread layer and bonded with the latex and having intersected reinforcing ribs, a rubber surface layer bonded to the outer rubber layer, and a plurality of grooves defined in the rubber surface layer corresponding to the reinforcing ribs.

1 . A laminar ball, comprising a spherical rubber core member, a reinforcing thread layer surrounding said spherical rubber core member, an outer rubber layer surrounding said reinforcing thread layer, said outer rubber layer comprising a plurality of intersected reinforcing ribs, a rubber surface layer bonded to an outer surface of said outer rubber layer, and a plurality of grooves defined in said rubber surface layer corresponding to said reinforcing ribs, wherein said reinforcing thread layer comprises a plurality of threads and a latex layer merged in said threads and bonded to said spherical rubber core member; said outer rubber layer is formed of multiple strips and bonded with said latex layer of said reinforcing thread layer.