A - Human Necessities – 63 – B
Patent
A - Human Necessities
63
B
A63B 37/12 (2006.01) A63B 37/00 (2006.01)
Patent
CA 2137841
The present invention provides a golf ball which exhibits a large flying distance and is superior in stability when hit with an iron and hit feeling. The golf ball comprises a core and a cover for covering the core, the cover comprising two layers consisting of an inner layer cover and an outer layer cover. The stiffness modulus of the inner layer cover is 3,000 to 5,500 kg/cm2 and that of the outer layer cover being 1,000 to 2,500 kg/cm2. The thickness of the inner layer cover is 0.5 to 2.5 mm and that of the outer layer being 0.5 to 2.5 mm. The total thickness of the inner layer cover and the outer layer cover is 1.0 to 4.5 mm. A base resin of the inner layer cover contains 5 to 100 by weight of an ionomer neutralized with a zinc ion.
Kirby Eades Gale Baker
Sumitomo Rubber Industries Ltd.
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