Ultrasonic treatment method
AssigneeHerrmann Ultraschalltechnik GmbH & Co. KG
InventorThomas Wipfler
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Abstract
The present invention relates to a method for ultrasonic treatment of a plastic material, comprising the steps of: positioning the plastic material between a sonotrode and a counter-tool, bringing the sonotrode excited by means of an ultrasonic oscillation into contact with the plastic material during a welding phase, moving the sonotrode and the counter-tool towards each other during a holding phase, in which neither the sonotrode nor the counter-tool are excited with an ultrasonic oscillation so that a force F is applied onto the plastic material. In order to reduce treatment times, wherein at the same time the quality of the welding process is not impaired but is even to be improved, it is proposed according to the invention that the force F is varied during the holding phase.
Claims9
Method for ultrasonic treatment of a plastic material comprising the steps:
- A) positioning the plastic material between a sonotrode and a counter tool,
- B) bringing the sonotrode excited with an ultrasonic oscillation into contact with the plastic material during a welding phase,
- C) moving the sonotrode and the counter tool toward one another during a holding phase, in which neither the sonotrode nor counter tool are excited with an ultrasonic oscillation so that a force F is applied to the plastic material, wherein the force F is varied during the holding phase in step C)
- characterised in that
- the movement of the sonotrode and the counter tool toward one another is controlled or regulated in step C).
Dependencies are inferred from the claim text.