Breitbandbinden von gestapeltem Packgut

摘要

The method is carried out on a banding machine with at least one winding strip forming a tensionable loop and consisting of a plastic-coated or varnish-coated paper web. The loop is severed after the winding strip has been tightened and joined together. During the loop formation, the banding machine guides the plastic layer or varnish layer of a winding strip coated on one side on to its uncoated surface consisting of porous paper. In a winding strip coated on both sides, the plastic layers are guided on one another. The free end is joined to said winding strip by ultrasonic cold welding. The plane working surface (76) of the sonotrode (38) of a banding machine is divided into part regions by at least one recess, and it consists of preferably small grid surfaces (84). The recesses are preferably grooves (78, 80) extending in the longitudinal direction and at an angle ( alpha ) of 30 to 60 degrees to this longitudinal direction.