| 摘要 |
PURPOSE:To produce a fine-mesh filter product in good yield and to propose a plastic material feed passage by which multi-cavity molding is performed. CONSTITUTION:A runner 4 for supplying a plastic material is flattened for the basic structure, and a runner guide band 12 is provided to uniformly deliver the plastic material to plural filter 1 product forming parts. Further, the shape of a guide band 13 on the filter 1 product is made similar to that of the filter 1 product, hence air-oil turbulence is not caused, and the rate of open area is increased. |
