| 摘要 |
A pellet aggregate preferably used in forming a film is obtained by a melt-film forming method. A raw material, which is formed of a cellulose acylate and an additive, is placed in a hopper. The pellet raw material is supplied from the hopper to an extruder, melted therein and extruded as a strand in a water vessel to cool the strand. The strand is then fed into a cutting unit. Washing water is supplied from a water supply unit to a cutting section of the cutting unit. The strand is cut into pellets by the cutting section and the generated powder is recovered by a powder separation unit. After the pellets are separated by a pellet/water separation unit, they are fed to a sieve unit to further remove powder by the sieve. The pellets from which the powder is removed is fed to a vessel and stored as a pellet aggregate.
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