Moulded plastic guide rail

The plastic molded guide rail arrangement (16) has an outer part produced as an injection molded part consisting of an elastic material with a first connection arrangement and a reverse cut guide groove running over at least part of the length of the outer part and a supporting part of less deformable material than the outer part and with a second connecting arrangement for connection with the first connecting arrangement of the outer part. An independent claim is also included for a window roller blind for a motor vehicle.