Injection molded balata shell

Details Injection molded balata shell Injection molded balata shell

1979-08-30

1981-02-03

Hoke, V. P.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

156146, B29F 108

Patent

active

042488265

ABSTRACT:
Improvements in a process for use in the manufacture of hemispherical shells for covering a golf ball center or core. The process includes the injection of a warm plasticized compound into a mold cavity in the form of a hemispherical shell. The improvements are that prior to plasticizing and injection into the mold cavity: the compound has as a dominant constituent, a trans 1,4-chain polymer of isoprene (balata, gutta-percha or synthetic transpolyisoprene); the compound is milled into a strip; and, the milled compound strips are granulated into particles.

REFERENCES:
patent: 5592 (1848-05-01), Brooman
patent: 24996 (1859-08-01), Wolfe
patent: 1382774 (1921-06-01), Geer
patent: 1904012 (1933-04-01), Reichard
patent: 1996880 (1935-04-01), Reach
patent: 2082304 (1937-06-01), Stam
patent: 2259349 (1941-10-01), Merrill
patent: 2363086 (1944-11-01), Ryan
patent: 2572438 (1951-10-01), Branson
patent: 2649622 (1953-08-01), Piccard

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