| 摘要 |
PROBLEM TO BE SOLVED: To develop a fine filter device for performing continuous production in a short time without generating clogging at the time of removal of foreign matter in an apparatus for manufacturing a film, a sheet or the like by especially extruding a thermoplastic resin easy to generate pyrolysis or crosslinking gelling and low in heat stability in a molten state. SOLUTION: In the fine filter device using a fine filter 1 for the purpose of filtering a gel or foreign matter in a molten resin plasticized and extruded by an extruder or the like in equipment for extruding a synthetic resin to mold the same into a film, a sheet or the like, the inflow port 11 of the molten resin formed to a center core used in fine filtration has a slot-like or long shape.
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