초록 ▼

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 pr

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.

대표청구항 ▼

1. A gussetted multi-wall bag comprisinga tubular multi-wall bag having upper and lower ends, said upper and lower ends being pinch closeable; front and back walls joined at opposite bag sides by at least two side gussets running the length of the bag; said at least two side gussets having upper and

1. A gussetted multi-wall bag comprisinga tubular multi-wall bag having upper and lower ends, said upper and lower ends being pinch closeable; front and back walls joined at opposite bag sides by at least two side gussets running the length of the bag; said at least two side gussets having upper and lower ends adjacent the upper and lower ends of said bag; said at least two side gussets each having a generally v-shaped configuration; said at least two side gussets each having walls joined at an apex forming the v-shape; said walls of the v-shaped gussets being bonded together at the upper and lower ends thereof, wherein the bonding comprises at least one adhesive bond location therebetween; said front and back bag walls, and said at least two side gussets having upper and lower ends that are stepped whereas to form ply edges that are stepped with respect to next adjacent ply edges; and said at least two side gussets being non-bonded and freely expandable between said upper and lower bonded ends upon the receipt of product into the bag.