Thread wound golf ball and process for producing the same
AssigneeSumitomo Rubber Industries, Ltd.
InventorsKazushige Sugimoto, Hiromasa Yamamoto, Tsutomu Nosaka
Life of this patent
Estimating the term…
Abstract
Disclosed is a thread wound golf ball comprising a center, a thread rubber layer formed by winding a thread rubber around the center and a cover formed on the thread rubber layer, wherein the thread rubber is obtained by cutting, into a suitable width, a rubber sheet for thread rubber which is obtained by vulcanizing a raw rubber sheet for thread rubber using a pressure rotary drum type continuous vulcanizing device.
Claims12
A thread wound golf ball comprising a center, a thread rubber layer formed by winding a thread rubber around the center and a cover formed on the thread rubber layer, wherein the thread rubber is obtained by cutting, into a suitable width, a rubber sheet for thread rubber which is obtained by vulcanizing a raw rubber sheet for thread rubber using a pressure rotary drum type continuous vulcanizing device,
- wherein the vulcanization is conducted at a temperature of 120.degree. to 180.degree. C. for 1 to 10 minutes at a pressure of 1 to 10 Kg/cm.sup.2, and
- wherein the vulcanized rubber sheet for thread rubber has a thickness of 0.3 to 1.0 mm.
A process for producing a thread wound golf ball comprising forming a thread wound center obtained by winding a thread rubber around a center and covering the thread wound center with a cover, wherein the thread rubber is obtained by cutting, into a suitable width, a rubber sheet for thread rubber which is obtained by vulcanizing a raw rubber sheet for thread rubber using a pressure rotary drum type continuous vulcanizing device,
- wherein the vulcanization is conducted at a temperature of 120.degree. to 180.degree. C. for 1 to 10 minutes at a pressure of 1 to 10 Kg/cm.sup.2, and
- wherein the vulcanized rubber sheet for thread rubber has a thickness of 0.3 to 1.0 mm.
Dependencies are inferred from the claim text.