| 摘要 |
The apparatus comprises a base mould(10) having a plurality of bead form cavity(11) linked with a passage(12) for injection of melt and having string guides(13) and(15) and a string way groove (14); a removable mould(20) having bead form cavities(11) and a passage(22) respectivel corresponding to those of the mould(10) and also having an injection port(23) and a guide groove(25); a tension take-up member(30) having upper and lower plates(32,33) slidably mounted with a spring(23) and bar(34) on a guide bar(39)..
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