发明申请
- 专利标题: GOLF BALL
- 专利标题(中): 高尔夫球
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申请号: US12647115申请日: 2009-12-24
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公开(公告)号: US20100167840A1公开(公告)日: 2010-07-01
- 发明人: Tsutomu HIRAU , Kazuhiko Isogawa , Satoko Okabe
- 申请人: Tsutomu HIRAU , Kazuhiko Isogawa , Satoko Okabe
- 优先权: JP2008-335264 20081226
- 主分类号: A63B37/00
- IPC分类号: A63B37/00 ; A63B37/12
摘要:
An object of the invention is to provide a golf ball excellent in the durability at the normal and low temperatures, flight distance, direction stability and shot feeling on the shots. The present invention provides a golf ball comprising: a core consisting of a center having a diameter of 35 mm or less and a surrounding layer covering the center; at least one intermediate layer covering the core, said intermediate layer having a thickness ranging from 0.5 mm to 1.2 mm and a density of 1.10 g/cm3 or more; and a cover covering the intermediate layer and having a thickness ranging from 0.3 mm to 1.0 mm, wherein the cover is formed of a cover composition that has a slab hardness ranging from 65 to 75 in Shore D hardness and contains as a resin component; (A) a polyamide resin composition having a flexural modulus in a range from 700 MPa to 4,000 MPa and a melt flow rate (240° C., 2.16 kg) of 5.0 g/10 min or more; (B) at least one member selected from the group consisting of an ethylene-(meth)acrylic acid binary copolymer, a metal-neutralized product of the binary copolymer, an ethylene-(meth)acrylic acid-(meth)acrylic acid ester ternary copolymer, and a metal-neutralized product of the ternary copolymer; and (C) a fluidity improving agent.
公开/授权文献
- US08314172B2 Golf ball 公开/授权日:2012-11-20
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