| 摘要 |
PURPOSE:To make the flowing-in of resin smooth, to erase the residue of a bubble and to prevent drop-out from being generated by adding roundness or providing inclination to side surface which contacts to the moulding space of a stamper, a nozzle and an outer circumference ring. CONSTITUTION:For an injecting nozzle 7, a round part 9 is provided on a nozzle side surface 11 which is in the outer side of a notch 10. Further, the round part 9 is provided on an outer circumference ring side surface 12 as well. Thus, the flowing-in of the resin can be made smooth and the residue of the bubble is erased in a border part. Then, the drop-out can be prevented from being generated. The same effect can be obtained even when the giving of the roundness is replaced with providing the inclination. |
