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Multi-piece solid golf ball

Inactive Publication Date: 2022-02-03
BRIDGESTONE SPORTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention is a multi-piece solid golf ball with low spin rate, made up of layers that have good feel and durability. The ball provides a good distance on full shots with an iron and is easy to control around the green. The qualities make it ideal for golfers who prioritize distance. The ball has a five-layer construction with dimples on its surface. The core is made up of at least two layers and has a diameter of at least 24.7 mm, preferably at least 25.0 mm, and even better if it is at least 26.0 mm. The intermediate layer is also made up of at least two layers and has a diameter of at least 25.0 mm, preferably at least 26.0 mm, and even better if it is at least 27.1 mm. The cover is made up of at least two layers and has a diameter of at least 25.0 mm, preferably at least 26.0 mm, and even better if it is at least 27.1 mm. The ball has a soft and good feel.

Problems solved by technology

Skillfully striking a golf ball with a driver (W #1) is generally difficult; the ball may or may not travel well depending on how it is hit.

Method used

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  • Multi-piece solid golf ball
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Examples

Experimental program
Comparison scheme
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examples

[0110]The following Examples and Comparative Examples are provided to illustrate the invention, and are not intended to limit the scope thereof.

examples 1 to 4

, Comparative Examples 1 to 8

[0111]Solid cores were produced by preparing rubber compositions for the Examples and Comparative Examples shown in Table 1, and then molding and vulcanizing the compositions under the vulcanization conditions for each Example shown in Table 1.

[0112]In Examples 1 and 2 and Comparative Examples 7 and 8, the core is produced in the same way as above based on the formulation shown in Table 1.

TABLE 1ExampleComparative Example123412345678CorePolybutadiene100100100100100100100100100100100100formulationZinc acrylate13.018.013.018.08.07.017.032.533.232.018.018.0(pbw)Organic peroxide1.21.21.21.21.21.21.21.21.21.21.21.2Zinc stearate555555500055Antioxidant0.10.10.10.10.10.10.10.10.10.10.10.1Zinc oxide61.859.063.362.560.098.797.429.228.929.362.545.5Zinc salt of2.02.02.02.02.02.02.02.02.02.02.02.0pentachlorothiophenolVulcanizationTemperature (° C.)155155155155155155155155155155155155Time (minutes)161615152020151515151515

[0113]Details on the ingredients mentioned in T...

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PUM

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Abstract

A golf ball is provided that achieves a satisfactory distance on full shots with an iron, is superior in the short game, and has a good feel at impact and a good durability. The golf ball has a core formed of a rubber composition as one or more layer, an envelope layer formed of a resin material as one or more layer, an intermediate layer formed of a resin material as one layer, and a cover formed of a resin material as one layer having a thickness of not more than 1.0 mm. The layers of the ball have Shore C hardnesses at the respective surfaces thereof which together satisfy certain conditions, and the core and the ball have respective deflections which satisfy certain other conditions.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This non-provisional application claims priority under 35 U.S.C. § 119(a) on Patent Application No. 2020-127857 filed in Japan on Jul. 29, 2020, the entire contents of which are hereby incorporated by reference.TECHNICAL FIELD[0002]The present invention relates to a multi-piece solid golf ball composed of four or more layers that include a core, one or more envelope layer, an intermediate layer and a cover.BACKGROUND ART[0003]Many innovations have been made in designing golf balls with a multilayer construction, and numerous balls that satisfy the needs of not only professional golfers, but also skilled and mid-level amateur golfers, have been developed to date. For example, functional multi-piece solid golf balls in which the surface hardnesses of the respective layers—i.e., the core, envelope layer, intermediate layer and cover (outermost layer)—have been optimized are in wide use. Also, a number of technical disclosures have been publis...

Claims

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Application Information

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IPC IPC(8): A63B37/00
CPCA63B37/0076A63B37/0033A63B37/00922A63B37/0065A63B37/0063A63B37/0084A63B37/0064A63B37/008A63B37/0087A63B37/0045
Inventor WATANABE, HIDEO
Owner BRIDGESTONE SPORTS