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公开(公告)号：US20220401796A1
公开(公告)日：2022-12-22
申请号：US17726911
申请日：2022-04-22
发明人： Hirotaka SHINOHARA
IPC分类号： A63B37/00
摘要： A golf ball according to the present invention includes a core, a cover located outside the core and having a plurality of dimples, and a coating layer located outside the cover and containing a delusterant, the surface of the coating layer having an average roughness Ra of at least 0.35. The surface of the golf ball has a static friction coefficient of at least 0.20. A method for producing a golf ball according to the present invention includes forming a coating layer on the surface of a cover having a plurality of dimples by using a coating material composition including a polyurethane coating material, a delusterant, and a solvent having a boiling point of at least 130° C.
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公开(公告)号：US20220193501A1
公开(公告)日：2022-06-23
申请号：US17502232
申请日：2021-10-15
发明人： Hirotaka SHINOHARA , Takeharu FUJIE
IPC分类号： A63B37/00
摘要： A method for producing a golf ball of the present invention includes the steps of: forming a first coating film on a surface of a covering having a plurality of dimples; and forming a second coating film on a surface of the first coating film. The second coating film is formed of a second coating material composition containing a polyurethane coating material and a solvent having a boiling point of 80° C. or less. An elastic recovery rate of the second coating film is 50% or more. In the golf ball of the present invention obtained by the method, an edge ratio which is a ratio of a film thickness of the second coating film in an edge portion of the dimple to a film thickness of the second coating film in a central portion of the dimple is 50% or more.
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公开(公告)号：US20220193500A1
公开(公告)日：2022-06-23
申请号：US17494242
申请日：2021-10-05
发明人： Hirotaka SHINOHARA
IPC分类号： A63B37/00 , C09D5/32 , C09D7/63 , C09D175/04 , C08K5/09
摘要： Provided are a golf ball and a resin composition for a cover or topcoat thereof which can suppress the yellowing of the golf ball caused by ultraviolet rays even if a naturally derived substance is used as an ultraviolet absorber, and they are environmentally and human friendly. A resin composition for a cover or topcoat of a golf ball of the present invention contains: a resin for a cover or topcoat; and a plant-derived extract which absorbs ultraviolet rays. The resin composition has a color difference ΔE of 10.0 or less in a Lab color system between before and after a color tone change test, the color tone change test being carried out by irradiating a film formed from the resin composition with a xenon lamp. In the golf ball of the present invention, the cover or the topcoat is formed by using the resin composition.
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公开(公告)号：US20190201746A1
公开(公告)日：2019-07-04
申请号：US16182823
申请日：2018-11-07
发明人： Hirotaka SHINOHARA , Takashi OHIRA
CPC分类号： A63B37/0022 , A63B37/0031 , A63B37/0074 , A63B37/0076 , A63B37/0096 , A63B2102/32 , B29D99/0042 , B29K2023/08 , B29K2067/00 , B29K2075/00 , B29K2995/007 , C08G18/4202 , C08G18/423 , C08G18/4236 , C08G18/44 , C08G18/73 , C08L75/06
摘要： The present invention provides a golf ball capable of exhibiting an excellent spin performance in approach shot while the effect on the spin performance in driver shot is being suppressed to be low. The golf ball of the present invention includes a core, a cover located outside the core and having dimples formed thereon, and a coating layer located outside the cover and formed with a material having a surface force of −130 μN or less.
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公开(公告)号：US20210339087A1
公开(公告)日：2021-11-04
申请号：US17376227
申请日：2021-07-15
发明人： Hirotaka SHINOHARA
IPC分类号： A63B37/00
摘要： A golf ball having a cover with a plurality of dimples on the surface thereof is provided with a coat of mutually differing properties on dimple areas of the surface and on land areas between the dimples. The land areas are formed with a coat having a high coefficient of friction and the dimple areas have a surface energy of not more than 32 dynes, enabling a lower spin rate to be achieved and thus increasing the distance traveled by the ball, particularly when struck with a middle iron, and also help impart a high spin rate and a good controllability on approach shots.
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公开(公告)号：US20190388729A1
公开(公告)日：2019-12-26
申请号：US16384033
申请日：2019-04-15
摘要： An evaluation method includes determining, by a computer processor, the times of occurrence of states of a golf ball during its contact with a collision surface, from the behavior of the golf ball based on its collision with the collision surface. A slide time or slide amount is calculated by the computer processor, based on the times of occurrence of the states. The slide time is a period from the start to the stop of a slide of the golf ball on the collision surface. The slide amount is the amount of the slide during the period. Information on the slide time or slide amount is output by the computer processor.
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公开(公告)号：US20180178073A1
公开(公告)日：2018-06-28
申请号：US15830755
申请日：2017-12-04
发明人： Hirotaka SHINOHARA
IPC分类号： A63B37/00
CPC分类号： A63B37/0022 , A63B37/0023 , A63B37/0074 , A63B37/0075 , A63B43/008
摘要： A colored golf ball has improved luxurious appearance without impairing its visibility. The colored golf ball of the present invention includes a core; a cover placed around the core having dimples formed on its surface; and a coating layer placed on top of the cover, in which the coating layer includes a polymer matrix having a bright material dispersed therein, and an L0 value, which represents an L value in the Lab color system of the colored golf ball before being covered with the coating layer, is 25 or less, and the difference ΔL between the L0 value and an L1 value, which represents an L value in the Lab color system of the colored golf ball after being covered with the coating layer, is 5 or more.
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公开(公告)号：US20170182366A1
公开(公告)日：2017-06-29
申请号：US15387811
申请日：2016-12-22
IPC分类号： A63B37/00 , C09D5/22 , C09D133/14 , C09D5/32
CPC分类号： A63B37/0022 , A63B37/0024 , A63B37/0074 , A63B37/0075 , A63B37/0076 , A63B47/008 , C09D5/22 , C09D5/32 , C09D133/14
摘要： A resin composition for a cover or topcoat of golf balls includes: a resin for a cover or topcoat of a golf ball; an ultraviolet (UV) absorber for absorbing UV rays, of which an absorbance spectrum has an absorption peak at a wavelength in a range of 310 nm to 330 nm, has an absorbance in a wavelength range of 300 nm to 350 nm of at least 1.0 AU and has an absorbance at a wavelength of 370 nm of 0.1 to 0.5 AU; and a fluorescent whitening agent for absorbing UV rays and emitting visible rays, of which an absorbance spectrum has an absorption peak at a wavelength in a range of 350 nm to 370 nm, wherein a concentration of the UV absorber ranges from 0.25 to 1.5% by mass with respect to a total mass of the resin composition.
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公开(公告)号：US20200147455A1
公开(公告)日：2020-05-14
申请号：US16693518
申请日：2019-11-25
发明人： Hirotaka SHINOHARA , Takashi OHIRA
IPC分类号： A63B37/00 , C09D175/06 , C09D5/00
摘要： To provide a golf ball that can prevent considerable decrease in carry distance of a driver shot when it rains and also can more reliably prevent adhesion of dirt, etc. to the surface of the golf ball. The golf ball of the present invention includes a core, a cover that is provided on an outer side of the core and is provided with dimples, and an outermost layer that is formed on an outer side of the cover and made of a material having a contact angle of 90° or more, a dynamic contact angle of 85° or less and an adhesive force of 130 μN or less. The material for forming the outermost layer includes a urethane coating material with a water repellent additive.
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公开(公告)号：US20190134469A1
公开(公告)日：2019-05-09
申请号：US16181378
申请日：2018-11-06
发明人： Hirotaka SHINOHARA
摘要： A colored golf ball has improved luxurious appearance without impairing its visibility. The colored golf ball of the present invention includes a core; a cover placed around the core having dimples formed on its surface; and a coating layer placed on top of the cover, in which the coating layer includes a polymer matrix having a bright material dispersed therein, and an L0 value, which represents an L value in the Lab color system of the colored golf ball before being covered with the coating layer, is 55 or less, and the difference ΔL between the L0 value and an L1 value, which represents an L value in the Lab color system of the colored golf ball after being covered with the coating layer, is 5 or more.
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