Ultrasonic sealing jaw and method for ultrasonic sealing
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United States of America Patent
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Nov 11, 2014
Issued Date -
N/A
app pub date -
Jun 16, 2010
filing date -
Jun 17, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
An ultrasonic sealing jaw (1) is used for sealing portions of plastic film to a tube so as to form a sealing engagement of the portions of plastic film around the circumference of the tube. The sealing jaw (1) includes a concave film-tube welding portion (7) for receiving the tube covered by the plastic films the film-tube welding portion (7) to form the film-tube attachment. Adjacent to at least one side of the film-tube welding portion (7) of the sealing jaw (1), is a substantially flat film-film welding portion (3, 4) for engaging the plastic film and sealing adjacent portions of plastic film to each other in an area adjoining the tube. A film-film welding portion (3, 4) defining a top plane (10) of the sealing jaw (1) has at least one recess with a surface (11) so as to form a cavity (12) and forms a cavity (12) with an opening towards the film-tube welding portion (7).
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