| 摘要 |
The ultrasound welding procedure for at least two films, in which the films and an anvil are passed in front of a sonotrode, the anvil having at least one welding groove (10) in lengthwise and transverse directions in relation to the films' direction of travel, is arranged so that the films receive a uniform level of ultrasound radiation in both lengthwise and transverse directions. The ultrasound welding procedure for at least two films, in which the films and an anvil are passed in front of a sonotrode, the anvil having at least one welding groove (10) in lengthwise and transverse directions in relation to the films' direction of travel, is arranged so that the films receive a uniform level of ultrasound radiation in both lengthwise and transverse directions. The energy applied by the sonotrode is modulated along the groove by varying the relative distances between the sonotrode and crests (16) along and across the line of movement, with a servomotor varying the altitude of the sonotrode. In addition, the axes of the of sonotrode and anvil are inclined in relation to the direction of travel, and the speed of the films' travel is varied. |
