Title:
ボウリングボールのメンテナンス方法、可塑剤
Document Type and Number:
Japanese Patent JP6802463
Kind Code:
B6
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.
Inventors:
山田 裕
Application Number:
JP2019145451A
Publication Date:
January 20, 2021
Filing Date:
August 07, 2019
Export Citation:
Assignee:
山田 裕
International Classes:
A63B37/00; A63B47/00; C09D7/63; C09D201/00