Plastic and nonmetallic article shaping or treating: processes – Vacuum treatment of work
Patent
1988-12-06
1990-05-29
Thurlow, Jeffery
Plastic and nonmetallic article shaping or treating: processes
Vacuum treatment of work
264250, 264320, 2643281, 26433118, 264DIG78, 425203, 425812, 425DIG60, 528481, 528501, B29C 3310, B29C 4356, B29C 4563
Patent
active
049294075
ABSTRACT:
The process uses a vented barrel to decrease the mositure content of the ionomeric resin cover stock prior to injection molding of a golf ball cover or the formation of semi-circular cover halves. The vent is located at a point on the barrel where the temperature of the melted ionomeric resin melt is between 400.degree. F. (204.degree. C.) and 500.degree. F. (260.degree. C.). The venting drops the moisture content of the ionomeric resin to below 800 ppm.
REFERENCES:
patent: 3264272 (1966-08-01), Rees
patent: 3454280 (1969-07-01), Harrison et al.
patent: 3819768 (1974-06-01), Molitor
patent: 4557852 (1985-12-01), Schulz et al.
patent: 4797221 (1989-01-01), Gueldenzopf
Acushnet Company
Tentoni Leo B.
Thurlow Jeffery
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