Golf ball manufacturing method

Details Golf ball manufacturing method Golf ball manufacturing method

2007-04-24

2007-04-24

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, C264S254000, C264S255000, C264S279100

Reexamination Certificate

active

10671772

ABSTRACT:
A golf ball is provided which contains a core and a cover. In the forming of the cover, two half shells made from a thermoplastic resinous composition are used to cover the core, the composite is put in a spherical mold, then, the mold is clamped. Thereafter, the thermoplastic resin where it is heated and pressurized at a pressure of 5 kgf/cm2to 50 kgf/cm2, and the excess thermoplastic resin composition flows out of the spherical cavity. Subsequently, the thermoplastic resin composition is heated in the spherical cavity and is pressurized at a pressure of 70 kgf/cm2or more whereby the cover is formed. The total volume of the two half shells is 105% to 120% of the volume of the cover.

REFERENCES:
patent: 3819795 (1974-06-01), Martin et al.
patent: 4501715 (1985-02-01), Barfield et al.
patent: 6093357 (2000-07-01), Bissonette et al.
patent: 6846442 (2005-01-01), Sugimoto
patent: 6905647 (2005-06-01), Endo et al.

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