| 摘要 |
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.
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