The present invention relates to artificial receptors on scaffolds, methods of and compositions for making them, and methods of using them. In accordance with one embodiment of the present invention, the primary system security features are incorporated into a video game system expansion device having a hard disk drive. The valve support has fluid openings, and a disk-shaped valve body that tapers towards the valve shaft on its side facing the valve support. For being able to restrict adjustability to a forming device and to a sealing device, the bags are conveyed such that their open side opposite the one closed side and the corresponding seam keep a position that is independent of the format of the objects to be packaged at all stages of procedure, and the bags are secured in the region of this open side.