| 摘要 |
An arrangement has a gap between a primary ultrasound oscillating unit (16) and an opposing tool (10), in which ultrasound is generated. Sheet materials (2,3) are fed into the gap using primary and secondary supply units (12,13). An arrangement has a gap between a primary ultrasound oscillating unit (16) and an opposing tool (10), in which ultrasound is generated. Sheet materials (2,3) are fed into the gap using primary and secondary supply units (12,13). The second material is profiled by the secondary supply unit. The secondary supply unit has a pair of profiled rollers. The first profiled roller has an ultrasound reflecting surface or coating, which partially reflects the ultrasound. The primary ultrasound oscillating unit is excited by a primary supply unit. A third roller is used as a counter roller, and the primary and secondary oscillating units are located next to each other. The supply units have an application unit for applying a liquid, e.g. water to the starting material sheets. The liquid contains a connecting agent e.g. starch. |
