Multilayer container package for dispensing a liquid product
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United States of America Patent
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Apr 13, 2004
Grant Date -
Sep 25, 2003
app pub date -
Mar 25, 2002
filing date -
Mar 25, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A package for dispensing a liquid product that includes an outer shell having a flexible resilient sidewall, a base wall and a finish surrounding an outlet opening. An inner bag-shaped liner is disposed within the outer shell, and is unattached to the sidewall and the base wall of the outer shell so as to be collapsible with respect to the outer shell as product is dispensed from the liner. A dispensing structure is secured to the finish. An opening in the base wall of the outer shell vents the volume between the shell and the liner to atmosphere. An atmospheric vent valve includes a base secured over the base wall of the outer shell, a valve pocket within the base having an atmospheric vent opening, and a valve disk received in the valve cup so that air pressure holds the valve disk against the base over the atmospheric vent opening when the container sidewall is squeezed.
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