Distance multi-layer golf ball

A - Human Necessities – 63 – B

Patent

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Details

A63B 37/00 (2006.01) C08K 3/08 (2006.01) C08L 9/00 (2006.01)

Patent

CA 2373671

The present invention is directed to an improved multi-layer golf ball comprising a core, an inner cover layer and an outer cover layer. The core preferably includes at least one metallic filler material. The inner cover layer is comprised of a low acid ionomer blend which may or may not include a filler such as zinc stearate. The outer cover layer is comprised of a soft, very low modulus ionomer or ionomer blend, or a non-ionomeric thermoplastic elastomer such as polyurethane, polyester or polyesteramide. The golf ball may further comprise an optional mantle layer, which may also include one or more filler materials. The resulting multi-layered golf ball of the present invention provides for enhanced distance without sacrificing playability or durability when compared to known multi-layer golf balls.

L'invention concerne une balle de golf multicouche qui comprend un noyau, une couche interne du noyau et une couche externe du noyau. Le noyau comprend de préférence au moins une matière de remplissage métallique. Le noyau intérieur est constitué d'un mélange d'ionomères d'acides inférieurs qui peut éventuellement comprendre une charge telle que le stéarate de zinc. La couche de couverture externe est constituée d'un ionomère à module très bas, ou d'un mélange d'ionomères, ou encore d'un élastomère thermoplastique non ionomère tel que polyuréthanne, polyester ou polyestéramide. La balle de golf peut éventuellement comprendre une couche périphérique qui peut aussi comprendre un ou plusieurs matériaux de remplissage. Selon cette invention, la balle de golf ainsi obtenue assure une meilleure distance sans rien perdre de la jouabilité ou de la durabilité en comparaison aux balles de golf multicouches existantes.

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