Method and apparatus for manufacturing tube-shaped packages made of flexible material
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United States of America Patent
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Dec 5, 2006
Issued Date -
N/A
app pub date -
Apr 6, 2004
filing date -
Jun 4, 1998
priority date (Note) -
Expired
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Abstract
Method for manufacturing a tube-shaped package having longitudinal sides and a bottom and made of flexible material, wherein the longitudinal sides of the package are sealed prior to forming the bottom and the bottom is formed by pushing an annular portion of the flexible material inward in a U-shaped arrangement at at least on closed end of the tube-shaped package.
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