| 摘要 |
A method of forming a tear line of an airbag door using an in-mold blade, may include a) confirming a time point when resin flow in an airbag door tear line portion may be completed in an injection mold, b) transferring a resin arrival signal to a blade operation portion for operating the in-mold blade, c) moving the in-mold blade forward at an in-mold blade forward time point that substantially corresponds to a receiving time of the resin arrival signal, d) completing the forward movement of the in-mold blade when the resin may be intercepted and dwelling starts, e) moving the in-mold blade backward before the dwelling may be completed, and f) completing the backward movement of the in-mold blade after the dwelling may be completed and cooling starts. |
