JP4489531B2 - ゴルフボール - Google Patents
ゴルフボール Download PDFInfo
- Publication number
- JP4489531B2 JP4489531B2 JP2004221812A JP2004221812A JP4489531B2 JP 4489531 B2 JP4489531 B2 JP 4489531B2 JP 2004221812 A JP2004221812 A JP 2004221812A JP 2004221812 A JP2004221812 A JP 2004221812A JP 4489531 B2 JP4489531 B2 JP 4489531B2
- Authority
- JP
- Japan
- Prior art keywords
- cover
- golf ball
- intermediate layer
- less
- reinforcing layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
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- 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
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- 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
- 239000011259 mixed solution Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920005906 polyester polyol Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920000573 polyethylene 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
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000007788 roughening Methods 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
- 239000003549 soybean oil Substances 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 239000003784 tall oil Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- 239000013638 trimer Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
- RNWHGQJWIACOKP-UHFFFAOYSA-N zinc;oxygen(2-) Chemical group [O-2].[Zn+2] RNWHGQJWIACOKP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B37/00—Solid balls; Rigid hollow balls; Marbles
- A63B37/0003—Golf balls
- A63B37/007—Characteristics of the ball as a whole
- A63B37/0072—Characteristics of the ball as a whole with a specified number of layers
- A63B37/0076—Multi-piece balls, i.e. having two or more intermediate layers
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B37/00—Solid balls; Rigid hollow balls; Marbles
- A63B37/0003—Golf balls
- A63B37/0004—Surface depressions or protrusions
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B37/00—Solid balls; Rigid hollow balls; Marbles
- A63B37/0003—Golf balls
- A63B37/0004—Surface depressions or protrusions
- A63B37/0006—Arrangement or layout of dimples
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B37/00—Solid balls; Rigid hollow balls; Marbles
- A63B37/0003—Golf balls
- A63B37/0004—Surface depressions or protrusions
- A63B37/0019—Specified dimple depth
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B37/00—Solid balls; Rigid hollow balls; Marbles
- A63B37/0003—Golf balls
- A63B37/0004—Surface depressions or protrusions
- A63B37/00215—Volume ratio
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B37/00—Solid balls; Rigid hollow balls; Marbles
- A63B37/0003—Golf balls
- A63B37/0023—Covers
- A63B37/0029—Physical properties
- A63B37/0031—Hardness
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B37/00—Solid balls; Rigid hollow balls; Marbles
- A63B37/0003—Golf balls
- A63B37/0023—Covers
- A63B37/0029—Physical properties
- A63B37/0033—Thickness
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B37/00—Solid balls; Rigid hollow balls; Marbles
- A63B37/0003—Golf balls
- A63B37/0038—Intermediate layers, e.g. inner cover, outer core, mantle
- A63B37/004—Physical properties
- A63B37/0043—Hardness
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B37/00—Solid balls; Rigid hollow balls; Marbles
- A63B37/0003—Golf balls
- A63B37/0038—Intermediate layers, e.g. inner cover, outer core, mantle
- A63B37/004—Physical properties
- A63B37/0045—Thickness
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B37/00—Solid balls; Rigid hollow balls; Marbles
- A63B37/12—Special coverings, i.e. outer layer material
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
100質量部のポリブタジエン(JSR社の商品名「BR−730」)、37質量部のアクリル酸亜鉛、適量の酸化亜鉛、0.7質量部のビス(ペンタブロモフェニル)ジスルフィド及び0.9質量部のジクミルパーオキサイドを混練し、ゴム組成物を得た。このゴム組成物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、170℃の温度下で15分間加熱して、直径が38.5mmであるコアを得た。このコアの質量は、34.9gであった。
実施例1と同様の製造方法で、下記の表1から7に示される仕様を備えたゴルフボールを得た。実施例2並びに比較例1、3及び5の補強層には、二液硬化型ウレタン樹脂を基材ポリマーとする塗料組成物が用いられた。この塗料組成物の生成では、まず、116質量部のPTMG及び16質量部の1,2,6−ヘキサントリオールを120質量部の溶剤(トルエンとメチルエチルケトンとの混合液)に溶解した。この液に、その濃度が0.1質量%となるように、ジブチル錫ジラウリレートを添加した。この液を80℃に保持しながら、48質量部のイソホロンジイソシアネートを滴下して、ウレタンポリオールを含有する主剤液を得た。このウレタンポリオールの固形分は60質量%であり、水酸基価は87mgKOH/gであり、重量平均分子量は7850であった。この主剤液と、イソホロンジイソシアネート(住友バイエルウレタン社製)を含有する硬化剤液とを、NCO/OHがモル比で1.2となるように混合した。この液に、光安定剤(三共社の商品名「サノールLS770」)、紫外線吸収剤(チバガイギー社の商品名「チヌビン900」)及び蛍光増白剤(チバガイギー社の商品名「ユビテックスOB」)を添加して、塗料組成物を調製した。ウレタン樹脂成分100質量部に対する添加量は、光安定剤が2質量部であり、紫外線吸収剤が2質量部であり、蛍光増白剤が0.2質量部である。
カバーを射出成形法で成形した他は実施例1と同様の製造方法で、下記の表1から7に示される仕様を備えたゴルフボールを得た。
カバーを射出成形法で成形したこと、及び補強層を実施例2と同様の方法で得たこと以外は実施例1と同様の製造方法で、下記の表1から7に示される仕様を備えたゴルフボールを得た。
ゴルフラボラトリー社のスイングマシンに、メタルヘッドを備えたドライバーを装着した。ヘッド速度が50m/secとなるようにマシン条件を設定し、ゴルフボールを打撃して、打撃直後のボール速度と、飛距離(発射地点から静止地点までの距離)とを測定した。10回の測定の平均値が、下記の表6及び表7に示されている。
上記スイングマシンに、5番アイアンを装着した。ヘッド速度が41m/secとなるようにマシン条件を設定し、ゴルフボールを打撃して、打撃直後のスピン速度と飛距離とを測定した。10回の測定の平均値が、下記の表6及び表7に示されている。
上記スイングマシンに、アプローチウエッジを装着した。ヘッド速度が21m/secとなるようにマシン条件を設定し、ゴルフボールを打撃して、打撃直後のスピン速度を測定した。10回の測定の平均値が、下記の表6及び表7に示されている。
上記スイングマシンに、ピッチングウエッジを装着した。ヘッド速度が37m/secとなるようにマシン条件を設定し、ゴルフボールを打撃した。ゴルフボールの表面を目視観察し、シワがない場合を「良好」とし、シワがある場合を「不良」とした。この結果が、下記の表6及び表7に示されている。
ゴルフボールを45m/sの速度で、繰り返し金属板に衝突させ、ゴルフボールが破壊されるまでの回数をカウントした。6個のゴルフボールについての測定の平均値が、下記の表6及び表7に示されている。
4・・・コア
6・・・中間層
8・・・補強層
10・・・カバー
12・・・ディンプル
14・・・ランド
16・・・仮想球
A・・・ディンプルA
B・・・ディンプルB
C・・・ディンプルC
D・・・ディンプルD
E・・・ディンプルE
F・・・ディンプルF
G・・・ディンプルG
H・・・ディンプルH
Claims (1)
- 球状のコアと、このコアの外側に位置する中間層と、この中間層の外側に位置する補強層と、この補強層の外側に位置するカバーとを備えており、
この中間層の基材ポリマーの主成分がアイオノマー樹脂であり、
この中間層の厚みが0.6mm以上2.0mm以下であり、
この中間層の、ショアD型硬度計で測定された硬度Hmが55以上であり、
このカバーの基材ポリマーの主成分が熱可塑性ポリウレタンエラストマーであり、
このカバーの公称厚みTcが0.6mm以下であり、
このカバーの、ショアD型硬度計で測定された硬度Hcが54以下であり、
このカバーの公称厚みTcに対する補強層の厚みTrの比(Tr/Tc)が0.005以上3.0以下であり、
その表面に深さDpを有するディンプルを備えており、
このディンプルの最深部の直下において中間層及び補強層が凹陥しており、
このディンプルの最深部の直下におけるカバーの厚みTdが(Tc−Dp)より大きいゴルフボールの製造方法であって、
(1)熱可塑性ポリウレタンエラストマーを基材ポリマーとする樹脂組成物から、ハーフシェルが得られる工程、
(2)コア4、中間層6及び補強層8からなる球体が、2枚のハーフシェルで覆われる工程、
(3)そのキャビティ面に多数のピンプルを備えた成形型に、この球体及びハーフシェルが投入される工程
及び
(4)この球体及びハーフシェルが成形型内で加圧及び加熱され、カバーの表面にピンプルの形状が反転した形状のディンプルが形成されるとともに、ピンプルに押圧されて補強層及び中間層が凹陥する工程
を含むことを特徴とするゴルフボールの製造方法。
Priority Applications (3)
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JP2004221812A JP4489531B2 (ja) | 2004-07-29 | 2004-07-29 | ゴルフボール |
US11/174,465 US7270615B2 (en) | 2004-07-29 | 2005-07-06 | Golf ball |
GB0514308A GB2416704B (en) | 2004-07-29 | 2005-07-13 | Golf ball |
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JP2004221812A JP4489531B2 (ja) | 2004-07-29 | 2004-07-29 | ゴルフボール |
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JP2010030789A Division JP4913223B2 (ja) | 2010-02-16 | 2010-02-16 | ゴルフボール |
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JP2006034773A JP2006034773A (ja) | 2006-02-09 |
JP4489531B2 true JP4489531B2 (ja) | 2010-06-23 |
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US (1) | US7270615B2 (ja) |
JP (1) | JP4489531B2 (ja) |
GB (1) | GB2416704B (ja) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
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JP4435640B2 (ja) * | 2004-07-29 | 2010-03-24 | Sriスポーツ株式会社 | ゴルフボール |
JP4531719B2 (ja) * | 2005-05-12 | 2010-08-25 | Sriスポーツ株式会社 | ゴルフボール製造方法 |
JP4756485B2 (ja) * | 2006-04-13 | 2011-08-24 | Sriスポーツ株式会社 | ゴルフボール |
JP4756486B2 (ja) * | 2006-05-17 | 2011-08-24 | Sriスポーツ株式会社 | ゴルフボール |
US20130196790A1 (en) * | 2010-04-09 | 2013-08-01 | Bridgestone Sports Co., Ltd. | Multi-piece solid golf ball |
JP5762140B2 (ja) * | 2010-07-23 | 2015-08-12 | ダンロップスポーツ株式会社 | ゴルフボール |
US8747256B2 (en) * | 2010-08-20 | 2014-06-10 | Nike, Inc. | Golf balls including multiple dimple types and/or multiple layers of different hardnesses |
US9149685B2 (en) * | 2011-08-24 | 2015-10-06 | Nike, Inc. | Soft coating for a golf ball |
US9566474B2 (en) | 2013-03-15 | 2017-02-14 | Nike, Inc. | Golf ball with soft coating and hard cover |
JP6776529B2 (ja) * | 2015-12-07 | 2020-10-28 | 住友ゴム工業株式会社 | ゴルフボール |
JP6690228B2 (ja) * | 2015-12-24 | 2020-04-28 | 住友ゴム工業株式会社 | ゴルフボール |
US11045692B2 (en) * | 2019-09-30 | 2021-06-29 | Acushnet Company | Dimple patterns for golf balls |
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JP2004000649A (ja) * | 2003-06-13 | 2004-01-08 | Bridgestone Sports Co Ltd | マルチピースソリッドゴルフボール |
JP2004081670A (ja) * | 2002-08-28 | 2004-03-18 | Sumitomo Rubber Ind Ltd | ゴルフボール及びゴルフボール製造方法 |
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JP3125722B2 (ja) * | 1996-10-28 | 2001-01-22 | ブリヂストンスポーツ株式会社 | 多層構造ソリッドゴルフボール |
JP2002186687A (ja) * | 2000-12-22 | 2002-07-02 | Bridgestone Sports Co Ltd | マルチピースソリッドゴルフボール |
JP4092532B2 (ja) * | 2001-01-12 | 2008-05-28 | ブリヂストンスポーツ株式会社 | ゴルフボール |
JP4047577B2 (ja) * | 2001-11-26 | 2008-02-13 | Sriスポーツ株式会社 | ウレタンカバーを有するゴルフボール |
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JP2004081670A (ja) * | 2002-08-28 | 2004-03-18 | Sumitomo Rubber Ind Ltd | ゴルフボール及びゴルフボール製造方法 |
JP2004000649A (ja) * | 2003-06-13 | 2004-01-08 | Bridgestone Sports Co Ltd | マルチピースソリッドゴルフボール |
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GB0514308D0 (en) | 2005-08-17 |
US20060025240A1 (en) | 2006-02-02 |
US7270615B2 (en) | 2007-09-18 |
GB2416704B (en) | 2006-10-11 |
JP2006034773A (ja) | 2006-02-09 |
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