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US 2020/0054933 A1Published application
Maintenance method of bowling ball, plasticizer
OwnerYutaka YAMADAinventor
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Abstract
The purpose of the present invention is to provide a maintenance method for restoring the flexibility of a surface layer of a bowling ball in which the flexibility of the surface layer is lost by volatilization or elution of a plasticizer. In order to solve the above-mentioned problems, a maintenance method of bowling ball is provided, characterized in that a plasticizer is applied to a surface layer of the bowling ball.
Claims10
A maintenance method of bowling ball, characterized in that a plasticizer is applied to a surface layer of the bowling ball.
A plasticizer for use in applying a surface layer of a bowling ball.
Dependencies are inferred from the claim text.