B - Operations – Transporting – 65 – B
Patent
B - Operations, Transporting
65
B
156/32.1
B65B 13/22 (2006.01) B65B 13/02 (2006.01)
Patent
CA 1063500
ABSTRACT OF THE DISCLOSURE A method is disclosed for tensioning of a formed strap loop about a package and joining of the overlapping por- tions of the loop in a manner that improves the residual tension of the loop. The strap loop, in the region of the overlap, is twisted so that the sides of the strap in that region are dis- placed from the package surface and so that one of the edges of that region remains adjacent the package surface whereby the ten- sioned loop can be joined by friction fusion, formation of inter- locking slits, or application of an independent seal without having to insert an anvil or bearing member between the package and the loop and thus increasing the residual tension. After the strap is restrained in the region where the strap free end overlaps a portion of the formed strap loop to prevent relative movement between the free end and overlapped portion, the package is encircled by the loop so that the strap is twisted in the balance of the loop relative to the restrained region. The loop may be tensioned before or after twisting. Regardless, in the twisted orientation, one of the two edges of the strap in the restrained region is adjacent the package while the other edge is spaced away from the package to expose, and provide a clear- ance area around, both sides of the overlapping strap portions in the region of restraint. A joint connection or seal is then made between the overlapping portions of the loop by joint- forming mechanisms in the clearance area. Finally, the trailing length, or standing portion, of strap is severed from the loop and the twisted strap is allowed to relax to a position flat against the package.
288734
Cheung Nelson
Lems Peter
LandOfFree
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