| 摘要 |
Golf balls incorporate compositions incorporating ethylene vinyl acetate polymer or ethylene vinyl acetate/acid terpolymer, having specified physical properties, and crosslinking agent, co-crosslinking agent, crosslinking accelerator, or mixtures of these. An additional blend polymer also may be incorporated into the compositions. The golf balls provide flexibility in golf ball design to improve ball performance, such as hit feel and spin rate, without adversely affecting shear-cut resistance of the ball. Also, methods for making golf balls include preparing a composition comprising ethylene vinyl acetate polymer, ethylene vinyl acetate/acid terpolymer, or mixtures of these, along with crosslinking agent, co-crosslinking agent, crosslinking accelerator, or mixtures of these, and then incorporating the composition into a golf ball. The methods can include injection molding only, or injection and compression molding. Preferred methods include inducing partial or total crosslinking of the composition at preferred steps of making the golf balls.
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