Golf ball with dual cover

Details Golf ball with dual cover Golf ball with dual cover

A - Human Necessities

63

B

A63B 37/06 (2006.01) A63B 37/00 (2006.01) A63B 37/12 (2006.01)

Patent

CA 2424492

A multi-layer golf ball (8) having a core (10), an inner cover layer (14) compising an ionomer and having Shore D hardness of about 65 or less, and an outer cover layer (16) comprising an ionomer and having a Shore D hardness of at least 60. The outer cover layer (16) is harder than the inner cover layer (14). The core (10) preferably comprises a high molecular weight polybutadiene that exhibits an ultra high Mooney viscosity. The sum of the thickness of the inner cove layer (14) and the thickness of the outer layer (16) is greater than 0.090 inches. A method of making the golf ball (8) is also disclosed.

.L'invention concerne une balle de golf multicouche (8) présentant une âme (10), une couche (14) formant enveloppe intérieure, comprenant un monomère et d'une dureté Shore D égale ou inférieure à environ 65, et une couche (16) formant enveloppe extérieure comprenant un ionomère, et d'une dureté Shore d'au moins 60. La couche extérieure (16) est plus dure que la couche intérieure (14). L'âme (10) comprend de préférence un polybutadiène de poids moléculaire élevé, présentant une viscosité Mooney ultra élevée, la somme de l'épaisseur de la couche intérieure (14) et de l'épaisseur de la couche extérieure (16) étant supérieure à 0,090 inches. L'invention concerne également un procédé de fabrication de la balle de golf (8).

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