| 摘要 |
A method for manufacturing an airbag cover may include a molding step for forming a molded airbag-cover body that includes an integrated combination of a top panel and a container, and a tearing-line formation step for post-processing the molded airbag-cover body obtained in the molding step to form a tearing line having a depth less than a panel thickness of the top panel. An ultrasonic machining device may be used in the tearing-line formation step to form the tearing line.
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