Abstract: An expandable food storage bag is provided having gusseted sides so that larger food or other items may be inserted therein before vacuum heat sealing. The bag includes first and second sidewalls having a first thickness and a first oxygen transmission rate. The bag further includes first and second gusseted sidewalls having a second thickness less than the first thickness and a second oxygen transmission rate substantially equal to or less than the first oxygen transmission rate. The first pleated sidewall interconnects one side of the first and second sidewalls. The second gusseted sidewall interconnects an opposite side of the first and second sidewalls. The thinner gusseted sidewalls allow the bag to be heat sealed with the first and second sidewalls that may be otherwise too thick with gusseted sidewalls of the same thickness as the first and second sidewalls while maintaining a substantially equal or less oxygen transmission rate.

Abstract: An expandable food storage bag is provided having gusseted sides so that larger food or other items may be inserted therein before vacuum heat sealing. The bag includes first and second sidewalls having a first thickness and a first oxygen transmission rate. The bag further includes first and second gusseted sidewalls having a second thickness less than the first thickness and a second oxygen transmission rate substantially equal to or less than the first oxygen transmission rate. The first pleated sidewall interconnects one side of the first and second sidewalls. The second gusseted sidewall interconnects an opposite side of the first and second sidewalls. The thinner gusseted sidewalls allow the bag to be heat sealed with the first and second sidewalls that may be otherwise too thick with gusseted sidewalls of the same thickness as the first and second sidewalls while maintaining a substantially equal or less oxygen transmission rate.