METHOD FOR THE BONDING OF FOILS

摘要

The invention describes a method for the bonding of foils, composed of at least one layer from the group of polyethylene, polypropylene, polyamide and polyethylene terephthalate, through welding. In order to produce bonds which meet increased strength requirements particularly with regard to dynamic loads, according to the invention the materials in the region of the contact layer are heated by ultrasound at least until softening occurs, and are actively laterally and vertically mixed with further application of ultrasound oscillations.