D - Textiles – Paper – 21 – H
Patent
D - Textiles, Paper
21
H
D21H 27/30 (2006.01) B65D 5/00 (2006.01) B65D 5/62 (2006.01) D21F 11/04 (2006.01) D21H 11/10 (2006.01)
Patent
CA 2379830
This invention, in one aspect, relates to a multi-ply paperboard having at least three inner plies and, in some aspects, a top liner and a back liner, wherein the multi-ply paperboard is derived from fiber sources comprising at least about 80 % by weight recycled fiber. The multi-ply paperboard of the present invention exhibits strength characteristics comparable those of paperboard prepared from virgin board. In further aspects, the invention relates to methods of making the multi-ply paperboard of the present invention.
Balaguer Roberto Jr.
Barton Thomas F.
Hansen James K.
Leitinger Jeffrey M.
Munson Richard L. Jr.
Gowling Lafleur Henderson Llp
Rock-Tenn Company
Rock-Tenn Shared Services Llc
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