JP6919357B2 - ゴルフボール - Google Patents
ゴルフボール Download PDFInfo
- Publication number
- JP6919357B2 JP6919357B2 JP2017120958A JP2017120958A JP6919357B2 JP 6919357 B2 JP6919357 B2 JP 6919357B2 JP 2017120958 A JP2017120958 A JP 2017120958A JP 2017120958 A JP2017120958 A JP 2017120958A JP 6919357 B2 JP6919357 B2 JP 6919357B2
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- Prior art keywords
- golf ball
- hardness
- less
- mass
- core
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- 229910052782 aluminium Inorganic materials 0.000 description 1
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- 239000012298 atmosphere Substances 0.000 description 1
- IRERQBUNZFJFGC-UHFFFAOYSA-L azure blue Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[S-]S[S-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-] IRERQBUNZFJFGC-UHFFFAOYSA-L 0.000 description 1
- 229920005601 base polymer Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- XITRBUPOXXBIJN-UHFFFAOYSA-N bis(2,2,6,6-tetramethylpiperidin-4-yl) decanedioate Chemical compound C1C(C)(C)NC(C)(C)CC1OC(=O)CCCCCCCCC(=O)OC1CC(C)(C)NC(C)(C)C1 XITRBUPOXXBIJN-UHFFFAOYSA-N 0.000 description 1
- 239000001055 blue pigment Substances 0.000 description 1
- GJKZSOHUVOQISW-UHFFFAOYSA-N buta-1,3-diene;2-methylbuta-1,3-diene;styrene Chemical compound C=CC=C.CC(=C)C=C.C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 GJKZSOHUVOQISW-UHFFFAOYSA-N 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 150000001734 carboxylic acid salts Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 description 1
- 125000005442 diisocyanate group Chemical group 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000006081 fluorescent whitening agent Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- DZBOAIYHPIPCBP-UHFFFAOYSA-L magnesium;2-methylprop-2-enoate Chemical compound [Mg+2].CC(=C)C([O-])=O.CC(=C)C([O-])=O DZBOAIYHPIPCBP-UHFFFAOYSA-L 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- DWLAVVBOGOXHNH-UHFFFAOYSA-L magnesium;prop-2-enoate Chemical compound [Mg+2].[O-]C(=O)C=C.[O-]C(=O)C=C DWLAVVBOGOXHNH-UHFFFAOYSA-L 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical compound CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 description 1
- 125000000864 peroxy group Chemical group O(O*)* 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- PMJHHCWVYXUKFD-UHFFFAOYSA-N piperylene Natural products CC=CC=C PMJHHCWVYXUKFD-UHFFFAOYSA-N 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 102000007739 porin activity proteins Human genes 0.000 description 1
- 229910001414 potassium ion Inorganic materials 0.000 description 1
- 239000001054 red pigment Substances 0.000 description 1
- LMCILKQUBHEOPB-UHFFFAOYSA-M sodium;ethene;prop-2-enoate Chemical compound [Na+].C=C.[O-]C(=O)C=C LMCILKQUBHEOPB-UHFFFAOYSA-M 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 229920002397 thermoplastic olefin Polymers 0.000 description 1
- 229920006345 thermoplastic polyamide Polymers 0.000 description 1
- 229920006346 thermoplastic polyester elastomer Polymers 0.000 description 1
- 150000003573 thiols Chemical class 0.000 description 1
- 235000013799 ultramarine blue Nutrition 0.000 description 1
- 239000012463 white pigment Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
Images
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- A—HUMAN NECESSITIES
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Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
X=Hc×Rc×0.05 (1)
S=Hs×Rc×0.05 (2)
M=Hm×Tm (3)
I=Hi×Ti (4)
O=Ho×To (5)
Q=(I+O)/2 (6)
15 ≦ M−S ≦ 100 (7)
0.25 < Q/M < 0.5 (8)
−10 ≦ I−O ≦ 30 (9)
Q/X ≧ 0.8 (10)
X=Hc×Rc×0.05 (1)
S=Hs×Rc×0.05 (2)
M=Hm×Tm (3)
I=Hi×Ti (4)
O=Ho×To (5)
Q=(I+O)/2 (6)
15 ≦ M−S ≦ 100 (7)
0.25 < Q/M < 0.5 (8)
−10 ≦ I−O ≦ 30 (9)
Q/X ≧ 0.8 (10)
100質量部のポリブタジエンゴム(JSR社の商品名「BR730」)、12質量部の酸化亜鉛(東邦亜鉛社製の商品名「銀嶺(登録商標)R」)、28.5質量部のアクリル酸亜鉛(三新化学工業社製の商品名「サンセラー(登録商標)SR」)、適量の硫酸バリウム(堺化学社製の商品名「硫酸バリウムBD」)、0.5質量部のDPDS(住友精化社製のジフェニルジスルフィド)、0.9質量部のジクミルパーオキサイド(日油社製の商品名「パークミル(登録商標)D」)及び2質量部の安息香酸(Emerald Kalama Chemical 社製)を混練し、ゴム組成物E1を得た。このゴム組成物E1を共に半球状キャビティを備えた上型及び下型からなる金型に投入し、165℃で20分間加熱して、半径が18.30mmであるコアを得た。ゴルフボールの質量が適正となるように、硫酸バリウムの量を調整した。
コア、インナーカバー、メインカバー及びアウターカバーの仕様を下記の表5−9に示される通りとした他は実施例1と同様にして、実施例2−10及び比較例1−13のゴルフボールを得た。コアの組成の詳細が、下記の表1に示されている。インナーカバー及びメインカバーの組成の詳細が、下記の表2及び表3に示されている。アウターカバーの組成の詳細が、下記の表4に示されている。
ゴルフラボラトリー社のスイングマシンに、ドライバー(ダンロップスポーツ社の商品名「XXIO9」、シャフト:MP900、シャフト硬度:R、ロフト角:10.5度)を装着した。ヘッド速度が40m/sである条件でゴルフボールを打撃して、ゴルフボールの初速(m/s)、スピン速度(rpm)及びトータル飛距離(m)を測定した。トータル飛距離は、打撃地点とゴルフボールが静止した地点との距離である。12回の測定で得られた値の平均値が、下記の表10−14に示されている。
10名のプレーヤーにドライバーにてゴルフボールを打撃させ、打球感を聞き取った。
「打球感が良好」と答えたプレーヤーの数に基づき、下記の格付けを行った。この結果が、下記の表10−14に示されている。
S:8−10人
A:6−7人
B:4−5人
C:0−3人
平坦な芝生上で、10名のプレーヤーに、打撃目標に向かってパターにてゴルフボールを打撃させて、打球感を聞き取った。打撃地点から打撃目標までの直線距離は、2mであった。「フィーリングが良好で、かつ、距離感を合わせやすい」と答えたプレーヤーの数に基づき、下記の格付けを行った。この結果が、下記の表10−14に示されている。
S:8−10人
A:6−7人
B:4−5人
C:0−3人
ゴルフラボラトリー社のスイングマシンに、ミドルアイアン(ダンロップスポーツ社の商品名「XXIO9」、シャフトMP900、シャフト硬度:R、ロフト角:30.0°)を装着した。ヘッド速度が33m/sである条件で、ゴルフボールを打撃した。打撃直後のスピン速度(rpm)及びキャリー飛距離(m)を測定した。キャリー飛距離は、打撃地点と落下地点との距離である。12回の測定で得られた値の平均値が、下記の表10−14に示されている。
ポリブタジエンゴム:JSR社製の商品名「BR730(シス結合含有率:96質量%)」
酸化亜鉛:東邦亜鉛社の商品名「銀嶺R」
アクリル酸亜鉛:三新化学工業社の商品名「サンセラーSR」(10質量%ステアリン酸コーティング品)
硫酸バリウム:堺化学社の商品名「硫酸バリウムBD」
DPDS:住友精化社製のジフェニルジスルフィド
PBDS:川口化学工業社製のビス(ペンタブロモフェニル)ジスルフィド
ジクミルパーオキサイド:日本油脂社の商品名「パークミルD」
安息香酸:Emerald Kalama Chemical 社製
4・・・コア
6・・・インナーカバー
8・・・メインカバー
10・・・アウターカバー
12・・・ディンプル
14・・・ランド
Claims (11)
- コアと、このコアの外側に位置するインナーカバーと、このインナーカバーの外側に位置するメインカバーと、このメインカバーの外側に位置するアウターカバーとを備えており、
上記アウターカバーの表面に多数のディンプルが形成されており、
上記コアの半径Rc(mm)、このコアの中心点のショアC硬度Hc、このコアの表面のショアC硬度Hs、上記メインカバーの厚みTm(mm)、このメインカバーのショアC硬度Hm、上記インナーカバーの厚みTi(mm)、このインナーカバーのショアC硬度Hi、上記アウターカバーの厚みTo(mm)及びこのアウターカバーのショアC硬度Hoから、下記式(1)−(6)により、このコアの中心点のTH値X、このコアの表面のTH値S、このメインカバーのTH値M、このインナーカバーのTH値I及びこのアウターカバーのTH値O並びに平均値Qが定義され、
X=Hc×Rc×0.05 (1)
S=Hs×Rc×0.05 (2)
M=Hm×Tm (3)
I=Hi×Ti (4)
O=Ho×To (5)
Q=(I+O)/2 (6)
上記TH値X、TH値S、TH値M、TH値I及びTH値O並びに平均値Qが、下記式(7)−(10)を満たすゴルフボール。
15 ≦ M−S ≦ 100 (7)
0.25 < Q/M < 0.5 (8)
−10 ≦ I−O ≦ 30 (9)
Q/X ≧ 0.8 (10) - 上記厚みTmが0.90mm以上である請求項1に記載のゴルフボール。
- 上記硬度Hmが93を超える請求項1又は2に記載のゴルフボール。
- 上記厚みTiが1.10mm以下である請求項1から3のいずれかに記載のゴルフボール。
- 上記厚みToが1.00mm以下である請求項1から4のいずれかに記載のゴルフボール。
- 上記硬度Hiが70未満である請求項1から5のいずれかに記載のゴルフボール。
- 上記硬度Hoが70未満である請求項1から6のいずれかに記載のゴルフボール。
- 上記コアの半径Rcが17.00mm以上20.00mm以下である請求項1から7のいずれかに記載のゴルフボール。
- 上記硬度Hcが40以上65以下である請求項1から8のいずれかに記載のゴルフボール。
- 上記硬度Hsが70以上95以下である請求項1から9のいずれかに記載のゴルフボール。
- 上記アウターカバーが上記メインカバーよりも軟質であり、上記メインカバーが上記インナーカバーよりも硬質である請求項1から10のいずれかに記載のゴルフボール。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017120958A JP6919357B2 (ja) | 2017-06-21 | 2017-06-21 | ゴルフボール |
US15/997,144 US10335642B2 (en) | 2017-06-21 | 2018-06-04 | Golf ball |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017120958A JP6919357B2 (ja) | 2017-06-21 | 2017-06-21 | ゴルフボール |
Publications (2)
Publication Number | Publication Date |
---|---|
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JP6919357B2 true JP6919357B2 (ja) | 2021-08-18 |
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