| 摘要 |
A raw material (11), which is formed of a cellulose acylate and an additive, is placed in a hopper (20). The pellet raw material (11) is supplied from the hopper (20) to an extruder (12), melted therein and extruded as a strand (21) in a water vessel (13) to cool the strand (21). The strand (21) is then fed into a cutting unit (14). Washing water is supplied from a water supply unit (31) to a cutting section (14a) of the cutting unit (14). The strand (21) is cut into pellets by the cutting section (14a) and the generated powder is recovered by a powder separation unit (32). After the pellets are separated by a pellet/water separation unit (35), they are fed to a sieve unit (16) to further remove powder by the sieve (18). The pellets (23) from which the powder is removed is fed to a vessel (17) and stored as a pellet aggregate (24).
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