| 摘要 |
[Object] To improve the productivity of a mesh filter and reduce the cost of the mesh filter while maintaining the filter performance. [Solution] A filter unit 4 connecting a gate connection part 2 to an outer cylinder 3 includes a plurality of longitudinal ribs formed at regular intervals orthogonally to an X axis and parallel to a Y axis when a virtual plane orthogonal to a central axis 5 of the gate connection part 2 is assumed to be an X-Y plane, a plurality of transverse ribs formed at regular intervals orthogonally to the longitudinal ribs and parallel to the X axis, and a plurality of rectangular openings formed between the longitudinal ribs and the transverse ribs. By injecting molten resin into a cavity from a gate opened toward a cavity portion forming the gate connection part 2, the gate connection part 2, the outer cylinder 3, and the filter unit 4 are formed integrally, the rib widths of the longitudinal ribs and the transverse ribs are made constant, and the shapes of the plurality of openings are made identical. |
