Ultrasonic welding device with preheating unit
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United States of America Patent
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Nov 21, 2017
Grant Date -
Dec 22, 2016
app pub date -
Feb 3, 2015
filing date -
Feb 6, 2014
priority date (Note) -
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Abstract
The present invention concerns an apparatus for ultrasonic welding of at least two material webs comprising a processing sonotrode which can be excited with an ultrasonic vibration, a processing counterpart tool and a material web guide which is so designed that the material web can be passed through between the processing sonotrode and the processing counterpart tool, in which there is provided a device for heating at least one material web prior to the welding operation. To provide an ultrasonic welding apparatus which avoids the stated disadvantages and which nonetheless provides a high processing speed it is proposed according to the invention that the device for preheating at least one material web has a preheating sonotrode which can be excited with an ultrasonic vibration.
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