Abstract: A method for the welding of plastic materials in the form of webs, films or the like by means of a heating wedge, welding being carried out without the use of a second pressure roller below the welded material webs. For this purpose, the heating wedge is placed onto the lower material web and is moved over the latter under pressure. The pressure is generated via a holding-down device which has a holding-down roller and which presses onto the upper material web and onto the heating wedge. A floating mounting for the heating wedge compensates for slight unevennesses on the lower material web.

Abstract: A method for the welding of plastic materials in the form of webs, films or the like by means of a heating wedge, welding being carried out without the use of a second pressure roller below the welded material webs. For this purpose, the heating wedge is placed onto the lower material web and is moved over the latter under pressure. The pressure is generated via a holding-down device which has a holding-down roller and which presses onto the upper material web and onto the heating wedge. A floating mounting for the heating wedge compensates for slight unevennesses on the lower material web.

Abstract: A parcel supporting device to be used in conjunction with the parcel rack of a two-wheeled vehicle, e.g. a bicycle, is adapted to carry additional parcels, e.g. shopping bags, positioned laterally from and above the rear wheel of the vehicle, so that they don't interfere with the movements of the rider. The device is equipped with means for suspending the parcels consisting preferably of two levers pivotably connected with and crossing one another in a scissorslike manner and being hook-shaped at their parcel-receiving ends. The suspending means may be removable from or built integral with the parcel rack.