| 摘要 |
PROBLEM TO BE SOLVED: To provide a molten resin filtration apparatus which filtrates a molten resin efficiently without deteriorating the quality of the resin. SOLUTION: The apparatus is provided with partition plates 12 arranged in parallel between an inflow manifold 5 and an outflow manifold 6, a tabular filter element 11 arranged diagonally between the partition plates 12, a filtration member 1 in which a wedge-shaped channel having inflow side openings and a wedge-shaped channel having an outflow side opening are formed on both sides the filter element 11, respectively, an inflow passage changeover valve 3 which changes over a channel leading from an extruder to the inflow manifold 5 or the outflow manifold 6, and an outflow passage changeover valve 4 which changes over a channel leading from the inflow manifold 5 or the outflow manifold 6 to a T dice 9 or a channel leading from the inflow manifold 5 to an exhaust opening 49 for discharging foreign substances. By changing over the inflow passage changeover valve 3 and the outflow passage changeover valve 4, the molten resin is made to flow reversely from the outflow manifold 6 to the inflow manifold 5 to clean the tabular filter element 11. COPYRIGHT: (C)2008,JPO&INPIT
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