Luftsackabdeckung und Herstellungsverfahren dafür

摘要

An air bag cover (10) is made of thermoplastic resin and covers an air bag. A plurality of holes (19) are provided with the air bag cover continuously and a breakable portion (16) is provided which severs upon the inflation of the air bag. The surface side of the breakable portion is processed by a heating process, so that protrusions (20) which partially plug the holes (19) are formed on the inner circumferential surface of the holes on the surface side.