| 摘要 |
A container made from thin-wall, flexible, gusseted, tubing material that opens into a bag having a rounded, generally flat, high-strength bottom. The bag, when folded flat for packaging, has four superimposed panels connected by alternating longitudinal fold lines to provide a bag with Z or accordion folds. The panels include a pair of outer plies and a pair of inner plies. One end of the bag is heat sealed to provide a bottom closure for the bag.
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