Airbag cover, airbag module, and method of producing the airbag cover

In order to provide an efficient technology of constructing an airbag cover (100) for covering a vehicle airbag (150), and related technologies thereof, a method of producing an airbag cover (100) having a linear groove (102) which is continuously formed with a predetermined depth within the thickness of the airbag cover (100) by processing a three-dimensionally molded plate-shaped airbag cover (100) by an ultrasonic processing blade (216) is described.