Process for producing golf ball

Details Process for producing golf ball Process for producing golf ball

2006-08-08

2006-08-08

Lee, Edmund H. (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

To produce composite, plural part or multilayered article

C264S250000, C264S279100, C264S320000

Reexamination Certificate

active

07087201

ABSTRACT:
Half shell10has a bowl-like shape, and is composed of a thermoplastic resin composition. The half shell10has a top part11and a side part12. The thickness Tt of the top part11is less than the thickness Ts of the side part12. The difference (Ts−Tt) between both thicknesses is 0.02 mm or greater and 0.30 mm or less. Two half shells10and a core covered by the half shells10are placed into a mold comprising an upper portion and a lower portion both of which having a semi hemispherical cavity. Upon clamping, the thermoplastic resin composition is compressed while being heated, resulting in outflow of the excess thermoplastic resin composition from the cavity. A cover is formed having the nominal thickness of 0.3 mm or greater and 1.0 mm or less with remained thermoplastic resin composition.

REFERENCES:
patent: 5798071 (1998-08-01), Boehm
patent: 6468381 (2002-10-01), Morgan

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