| 摘要 |
PURPOSE:To prevent a molding defect, such as packing defect, and to decrease the restriction on assembling of valves, etc., to gates in the case of such assembling. CONSTITUTION:The first gate 28 for a primary resin P1 for molding parts exclusive of window parts 12 of tape cassette halves 4a, 4b is opened in the corner part on the front surface side of a base surface part 5. A boss 13 for coupling to another tape cassette halves 4b, 4a exists on the rear side in this corner part. The second gate 29 for a secondary resin P2 forming the window parts 12 is opened in the central part on the front surface side of the window parts 12. As a result, the packing of the primary resin P1 is smoothed and the first gate 28 at the base surface part 5 is positioned apart furthest from the second gate 29. |
