Multi-ply linear draw support post

Details Multi-ply linear draw support post Multi-ply linear draw support post

B - Operations, Transporting

32

B

B32B 1/08 (2006.01) B31C 3/00 (2006.01) B31F 1/00 (2006.01) B31F 7/00 (2006.01) B32B 29/00 (2006.01) B65D 5/44 (2006.01) B65D 5/50 (2006.01) B65D 81/05 (2006.01)

Patent

CA 2489219

Paperboard support posts are formed by linearly advancing paperboard plies to a mandrel and wrapping the plies about the mandrel with the ply edges parallel to the mandrel axis, the plies being adhered together to form a tube that is linearly advanced along the mandrel and then cut into desired lengths. In one embodiment, the tube is a multi-grade structure having one or more relatively low- grade plies in the middle of the tube wall and relatively higher-grade plies toward the inside and outside of the tube. In another embodiment, one or more intermediate plies are embossed or corrugated to increase their effective caliper.

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