摘要:
A multi-piece solid golf ball composed of a solid core, at least one intermediate layer, and a cover is characterized in that the core is made of a molded and vulcanized material obtained by vulcanizing a rubber composition containing (A) a base rubber which includes (a-1) a methacryloxy- and/or acryloxy-modified silicone polymer, and containing also an unsaturated carboxylic acid and/or a metal salt thereof, an organic peroxide and an inorganic filler, and has a diameter of 30 to 40 mm and a deflection under a 980 N (100 kg) load of 2.5 to 6.0 mm; the intermediate layer is made primarily of a thermoplastic resin and has a thickness of 0.5 to 2.5 mm and a surface Shore D hardness of 45 to 75; and the cover has a thickness of 0.2 to 2.5 mm and a surface Shore D hardness of 40 to 63 which is lower than the surface Shore D hardness of the intermediate layer. The golf ball has a deflection under a 980 N (100 kg) load of 2.0 to 4.0 mm.
摘要:
A multi-piece solid golf ball composed of a solid core, at least one intermediate layer, and a cover is characterized in that the core is made of a molded and vulcanized material obtained by vulcanizing a rubber composition containing (A) a base rubber which includes (a-1) a methacryloxy- and/or acryloxy-modified silicone polymer, and containing also an unsaturated carboxylic acid and/or a metal salt thereof, an organic peroxide and an inorganic filler, and has a diameter of 30 to 40 mm and a deflection under a 980 N (100 kg) load of 2.5 to 6.0 mm: the intermediate layer is made primarily of a thermoplastic resin and has a thickness of 0.5 to 2.5 mm and a surface Shore D hardness of 45 to 75; and the cover has a thickness of 0.2 to 2.5 mm and a surface Shore D hardness of 40 to 63 which is lower than the surface Shore D hardness of the intermediate layer. The golf ball has a deflection under a 980 N (100 kg) load of 2.0 to 4.0 mm.
摘要:
The invention provides a method of manufacturing golf balls composed of a core and one or more cover layer which encloses the core, at least one cover layer being a thin layer having a thickness of 1.0 mm or less. The thin layer is formed to a desired thickness on a surface of a core or spherical body by holding within a mold cavity the core or a spherical body composed of the core enclosed by a cover layer and injecting a synthetic resin material into a space defined by a surface of the core or spherical body and an inner face of the mold cavity so as to form a cover layer on the surface of the core or spherical body, then grinding the resulting cover layer to a thickness of at least 0.1 mm with a specific type of grinder. Golf balls obtained in this way can be provided with a good sphericity even when the cover is formed to a very small thickness.
摘要:
The invention provides a method of manufacturing golf balls composed of a core and one or more cover layer which encloses the core, at least one cover layer being a thin layer having a thickness of 1.0 mm or less. The thin layer is formed to a desired thickness on a surface of a core or spherical body by holding within a mold cavity the core or a spherical body composed of the core enclosed by a cover layer and injecting a synthetic resin material into a space defined by a surface of the core or spherical body and an inner face of the mold cavity so as to form a cover layer on the surface of the core or spherical body, then grinding the resulting cover layer to a thickness of at least 0.1 mm with a specific type of grinder. Golf balls obtained in this way can be provided with a good sphericity even when the cover is formed to a very small thickness.
摘要:
A multi-piece solid golf ball has a solid core, an envelope layer that encloses the solid core, an intermediate layer that encloses the envelope layer, and a cover that encloses the intermediate layer and has a plurality of dimples on a surface thereof. The diameter of the solid core, the center hardness, surface hardness and hardness difference between the center and surface of the solid core, the thickness and surface hardness of the envelope layer, and the thickness and surface hardness of the intermediate layer are each optimized within specific ranges. Moreover, the intermediate layer is formed so as to be harder than the envelope layer and the cover. In addition, the thickness and surface hardness of the cover, and the combined thickness of the envelope layer, intermediate layer and cover are each optimized within specific ranges.
摘要:
A multi-piece solid golf ball has a solid core, an envelope layer that encloses the solid core, an intermediate layer that encloses the envelope layer, and a cover that encloses the intermediate layer and has a plurality of dimples on a surface thereof. The diameter of the solid core, the center hardness, surface hardness and hardness difference between the center and surface of the solid core, the thickness and surface hardness of the envelope layer, and the thickness and surface hardness of the intermediate layer are each optimized within specific ranges. Moreover, the intermediate layer is formed so as to be harder than the envelope layer and the cover. In addition, the thickness and surface hardness of the cover, and the combined thickness of the envelope layer, intermediate layer and cover are each optimized within specific ranges. This golf ball is more advantageous than prior-art golf balls because it reduces the spin rate of the ball on full shots taken with a driver and increases the carry of the ball, in addition to which it provides a good performance on approach shots.
摘要:
A multi-piece solid golf ball has a solid core, an envelope layer that encloses the solid core, an intermediate layer that encloses the envelope layer, and a cover that encloses the intermediate layer and has a plurality of dimples on a surface thereof. The diameter of the solid core, the center hardness, surface hardness and hardness difference between the center and surface of the solid core, the thickness and surface hardness of the envelope layer, and the thickness and surface hardness of the intermediate layer are each optimized within specific ranges. Moreover, the intermediate layer is formed so as to be harder than the envelope layer and the cover. In addition, the thickness and surface hardness of the cover, and the combined thickness of the envelope layer, intermediate layer and cover are each optimized within specific ranges. This golf ball is more advantageous than prior-art golf balls because it reduces the spin rate of the ball on full shots taken with a driver and increases the carry of the ball, in addition to which it provides a good performance on approach shots.
摘要:
A multi-piece solid golf ball has a solid core, an envelope layer that encloses the solid core, an intermediate layer that encloses the envelope layer, and a cover that encloses the intermediate layer and has a plurality of dimples on a surface thereof. The diameter of the solid core, the center hardness, surface hardness and hardness difference between the center and surface of the solid core, the thickness and surface hardness of the envelope layer, and the thickness and surface hardness of the intermediate layer are each optimized within specific ranges. Moreover, the intermediate layer is formed so as to be harder than the envelope layer and the cover. In addition, the thickness and surface hardness of the cover, and the combined thickness of the envelope layer, intermediate layer and cover are each optimized within specific ranges. This golf ball is more advantageous than prior-art golf balls because it reduces the spin rate of the ball on full shots taken with a driver and increases the carry of the ball, in addition to which it provides a good performance on approach shots.
摘要:
The invention provides a golf ball characterized by having a surface over all or part of which is provided a major region colored a dark color and, in the major region, indicia such as letters and images of a relatively bright color tone, wherein the dark color of the major region, as expressed by the Lab color system, has a lightness L of at most 45 and a chroma C, defined as (a2+b2)1/2, of at most 5. The golf ball of this invention is colorful and highly fashionable while retaining an excellent rebound and scuff resistance.
摘要翻译:本发明提供了一种高尔夫球,其特征在于,其全部或部分表面设置有主要区域,该主要区域为深色,主要区域为诸如相对较亮色调的字母和图像的标记,其中深色 由Lab色彩系统所表示的主要区域的亮度L至多为45,色度C定义为(a 2 + b sup> 2) SUP≥1/ 2,最多为5.本发明的高尔夫球是多彩且高度时尚的,同时保持优异的反弹和抗磨损性。
摘要:
An IMES transmitter has a control unit, a non-volatile memory to record a transmitter number of the IMES transmitter, and a data I/F. When registration data Dset associating the transmitter number with position information is input from the data I/F, the control unit records the position information included in the registration data Dset if the registration data Dset includes the transmitter number of the IMES transmitter, and transmits the registration data Dset from a transmitting unit if the registration data Dset includes the transmitter number of another position information transmission device. The device registers various information such as position information on plural position information transmission devices without requiring complicated equipments.