Method for producing golf ball

Details Method for producing golf ball Method for producing golf ball

2005-05-04

2009-10-13

Lee, Edmund H. (Department: 1791)

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

C264S236000, C264S275000, C264S328170, C264S347000

Reexamination Certificate

active

07601290

ABSTRACT:
A method of manufacturing golf balls composed of a core and a cover of one or more layer that encloses the core, at least one cover layer being made of a thermoplastic polyurethane composition characterized by including at least 90 wt % of a thermoplastic polyurethane obtained by a polyurethane-forming reaction of an organic diisocyanate compound with a long-chain polyol and a chain extender, which thermoplastic polyurethane composition cover layer has an inherent viscosity in a DMF solvent of larger than 1.5 dl/g and an inherent viscosity in a 0.05 mol/L n-butylamine-containing DMF solution of larger than 0.5 dl/g, the golf ball manufacturing method being characterized by: conditioning the thermoplastic polyurethane to a pre-processing moisture content of 500 ppm or less, then injection molding the moisture-conditioned thermoplastic polyurethane to form the thermoplastic polyurethane composition cover layer. Golf balls produced by this method have a high rebound and excellent spin characteristics and scuff resistance, are recyclable in a molding operation, and have excellent manufacturability.

REFERENCES:
patent: 3395109 (1968-07-01), Molitor et al.
patent: 4248432 (1981-02-01), Hewitt et al.
patent: 4347338 (1982-08-01), Torii et al.
patent: 4376834 (1983-03-01), Goldwasser et al.
patent: 4442282 (1984-04-01), Kolycheck
patent: 5006297 (1991-04-01), Brown et al.
patent: 5318813 (1994-06-01), Flexman, Jr.
patent: 5334673 (1994-08-01), Wu
patent: 5733428 (1998-03-01), Calabria et al.
patent: 5888437 (1999-03-01), Calabria et al.
patent: 5897884 (1999-04-01), Calabria et al.
patent: 5929189 (1999-07-01), Ichikawa et al.
patent: 5947843 (1999-09-01), Calabria et al.
patent: 6117024 (2000-09-01), Dewanjee
patent: 6123628 (2000-09-01), Ichikawa et al.
patent: 6190268 (2001-02-01), Dewanjee
patent: 6582325 (2003-06-01), Ichikawa et al.
patent: 6747100 (2004-06-01), Ichikawa et al.
patent: 7008333 (2006-03-01), Takesue et al.
patent: 58-2063 (1983-01-01), None
patent: 9-271538 (1997-10-01), None
patent: 11-178949 (1999-07-01), None
patent: 2002-336378 (2002-11-01), None

Affiliated with

Also associated with

Rating

Method for producing golf ball does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for producing golf ball, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for producing golf ball will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4100656