Golf ball and method of making same
OwnerMichael J. Sullivan, R. Dennis Nesbitt +1inventors
InventorsMichael J. Sullivan, R. Dennis Nesbitt, Mark L. Binette
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Abstract
Disclosed herein is a multi-layer golf ball having a central core, an inner cover layer containing a non-ionomeric polyolefin material and a filler, and an outer cover layer comprising a resin composition. The combined thickness of the inner and outer cover layer preferably is at least about 0.10 inches. The golf ball has a coefficient of restitution of at least about 0.750. When the inner cover layer contains a non-ionomeric material and the outer cover layer contains, e.g., an ionomer, the golf ball of the invention can be configured to have playability properties comparable to those of golf balls which contain substantially higher quantities of ionomer. A method for forming the golf ball described above also is disclosed.
Claims35
A golf ball, comprising
- a core,
- an inner cover layer comprising
- a first resin composition containing at least 50 parts by weight of a non-ionomeric polyolefin material, and
- at least one part by weight of a filler, the parts by weight of non-ionomeric polyolefin material and filler being based upon 100 parts by weight of the first resin composition, and
- an outer cover layer comprising a second resin composition which is different from the first resin composition,
- the golf ball having an overall cover thickness of at least 0.10 inches.
A golf ball comprising
- a core,
- an inner cover layer comprising
- a first resin composition which contains at least 50 parts by weight of a non-ionomeric polyolefin material, and
- one or more parts by weight of at least one of a density-adjusting filler and a flex modulus adjusting filler, the parts by weight of non-ionomeric polyolefin and filler being based upon 100 parts by weight of the first resin composition, and
- an outer cover layer comprising a second resin composition which is different from the first resin composition.
A golf ball comprising:
- a core,
- an inner cover layer comprising
- a first resin composition containing at least 50 parts by weight of non-ionomeric polyolefin material, and
- one or more parts by weight of a filler with a specific gravity which is at least 0.05 higher or lower than the specific gravity of the first resin composition, the parts by weight of non-ionomeric polyolefin material and filler being based upon 100 parts by weight of the first resin composition, and
- an outer cover layer comprising a thermoplastic material.
A method of making of a golf ball having a core and an outer cover layer comprising a second resin composition, the method comprising positioning between the core and the outer cover layer an inner cover layer comprising a first resin composition which is different from the second resin composition and which contains at least 50 parts by weight of a non-ionomeric polyolefin material, the inner cover layer further including one or more parts by weight of at least one of a density-adjusting filler and a flex modulus adjusting filler, the parts by weight of non-ionomeric polyolefin material and filler being based upon 100 parts by weight of the first resin composition.
A method of making a golf ball having a core, an outer cover layer comprising a second resin composition, the method comprising positioning an inner cover layer between the core and the outer cover layer, the inner cover layer being formed from a first resin composition which is different from the second resin composition and which includes at least 50 parts by weight of a non-ionomeric polyolefin material, the inner cover layer further including one or more parts by weight of a filler, the parts by weight of non-ionomeric polyolefin and filler being based upon 100 parts by weight of the first resin composition, the overall cover thickness of the golf ball being at least 0.10 inches.
Dependencies are inferred from the claim text.