Ultrasonic sealing apparatus
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United States of America Patent
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-
Feb 20, 2007
Grant Date -
Mar 13, 2003
app pub date -
Oct 11, 2002
filing date -
Sep 30, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
An ultrasonic sealing apparatus is provided for transversely ultrasonically sealing a packing material comprised of a laminated body including at least a thermoplastic resin layer having a tubular form and containing a fluid. The apparatus includes a horn having an elongated and flat sealing face and an opposing jaw with an action face including a pressing portion for pressing the packing material in cooperation with the sealing face of the horn to a define at least one transverse sealing zone of the tubular packing material. At least one groove is disposed on the action face of the opposing jaw for forming a molten thermoplastic resin bulge in a vicinal area of the at least one sealing zone on a side in contact with the fluid in the tubular packing material.
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