METHODS FOR SEALING POUCHES HAVING MULTIPLE PLIES
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United States of America Patent
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Issued Date -
Oct 1, 2015
app pub date -
Jun 10, 2015
filing date -
Nov 24, 2010
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Abstract
A method of sealing pouches formed of multiple plies such as in gusseted pouches having a bottom gusset structure requiring seals through at least four plies of pouch film and upper pouch structures having a two-ply upper structure requiring seals through only two-plies. Differential sealing heat is applied with more thermal energy applied to the bottom pouch structure than to the upper pouch structure.
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