| 摘要 |
PURPOSE:To prevent the irregulatity of pellet strength, by a method wherein the wt. ratio of a recycled thin platelet to be re-granulated and a powder is measured and the rotary number of a screw feeder is controlled. CONSTITUTION:A thin platelet generated when a powder is subjected to compression molding and used again along with the powder but the throw-in amount of the powder is measured in the wt. thereof by a load cell 24. On the other hand, the thin platelet recycled by a transport machine 32 is also measured by the load cell 24 and, after mixing in a mixer 18, supplied to the hopper 26 of a granulator. In this case, because the rotary number of a screw feeder 27 is controlled corresponding to the mixing ratio of the thin platelet and the powder, pellet is molded under an optimun conditing and the irregularity of pellet strength is prevented.
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