Multi-gusset for pinch closure bag
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United States of America Patent
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Apr 9, 2002
Grant Date -
N/A
app pub date -
Jun 8, 2000
filing date -
Jun 8, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
A multiple ply freight shipping bag having multiple side gussets. The bag being of the type having pinch closeable upper and lower ends. The side gussets and the bag plies all being stepped in incremental distances to form an elongated sealable stepping pattern for efficient closure of the bag to prevent outward sifting or channeling of products filling the bag. The upper and lower corners of the gusset walls are spot bonded together to maintain a locked position, hold ply alignment, and achieve increased bag strength during and after filling, and wherein the gussets are freely expandable therebetween from the bottom of the bag to the top.
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