Method of improving scuff and cut resistance of cover for game ball
AssigneeSpalding Sports Worldwide, Inc.
InventorR. Dennis Nesbitt
Life of this patent
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Abstract
Disclosed herein is a game ball and method for making the same. The game ball has a non-ionomeric cover which has been crosslinked by incorporating a dialkyl peroxide in the polymer mix prior to molding. The game ball cover is superior in at least one of cut resistance and scuff resistance to a conventional cover that does not have covalent crosslinks but is otherwise substantially identical in composition. The game ball cover of the invention is particularly useful for improving the durability of golf balls to be struck with sharp-grooved clubs. The peroxide may be omitted and the cover crosslinked using post formation irradiation.
Claims18
A game ball having a center and a cover, the cover comprised predominantly of a non-ionomer resin having a sufficient degree of peroxide induced covalent crosslinking to impart to the cover improved resistance to at least one of scuffing and cutting, the resin being selected from the group consisting of polyamides, block copolymers, ethylene propylene elastomers, and polyamide block copolymers, scuff and cut resistance being in the range of about 1-2.
A golf ball having a core and a cover, the cover comprised predominantly of a non-ionomer resin having a sufficient degree of peroxide induced covalent crosslinking to impart to the cover improved resistance to at least one of scuffing and cutting, the resin being selected from the group consisting of polyamides, block copolymers, ethylene propylene elastomers, and polyamide block copolymers, scuff and cut resistance being in the range of about 1-2.
Dependencies are inferred from the claim text.