FILTER FOR MOLTEN PLASTIC RAW MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide a filter for a molten plastic raw material which can improve the quality of a plastic product. SOLUTION: Before or after passing a filter for filtering solid impurities in relation to the flow direction of the molten plastic raw material, a passage channel member 11 having one or more slit-like channels 11a allowing the passage of the molten plastic raw material is provided in the filter for the molten plastic raw material. At least part of the whole channel 11a is made a parallel channel 11b of 3 mm or below width or a tapered channel 11c. COPYRIGHT: (C)2005,JPO&NCIPI