A method produces a flexible shaped strip (18), made of plastic, for fixing cushion cover (12) to a cushion component (10). The cushion component is formed of a foam material and includes a longitudinal channel (20) for insertion of the shaped strip (18). The shaped strip has, at least partly, a slip preventer to increase the tear resistance form the cushion component (10). The anti-slip component or slip preventer is made of a plastic softer than that used for the shaped strip (18), and is, at least partly, arranged around the outer surface of the shaped strip.

 
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