US 12,280,916 B2
Multiwall paper packaging structures
Raymond J. Recchia, Cincinnati, OH (US); Russell A. Leeker, Fenton, MO (US); Brian J. Schiermeier, White House, TN (US); Seyed Hesamoddin Tabatabaei, Mason, OH (US); Robert M. Tiepelman, Cottontown, TN (US); and Daniel T. Senter, Crestwood, MO (US)
Assigned to ProAmpac Holdings Inc., Cincinnati, OH (US)
Filed by PROAMPAC HOLDINGS INC., Cincinnati, OH (US)
Filed on Sep. 27, 2022, as Appl. No. 17/953,647.
Claims priority of provisional application 63/248,753, filed on Sep. 27, 2021.
Prior Publication US 2023/0099868 A1, Mar. 30, 2023
Int. Cl. B65D 30/08 (2006.01); B32B 7/14 (2006.01); B32B 29/00 (2006.01); B32B 29/06 (2006.01); B32B 37/12 (2006.01); B65D 30/20 (2006.01)
CPC B65D 31/02 (2013.01) [B32B 7/14 (2013.01); B32B 29/005 (2013.01); B32B 29/06 (2013.01); B32B 37/1292 (2013.01); B65D 31/10 (2013.01); B32B 2250/03 (2013.01); B32B 2250/26 (2013.01); B32B 2255/12 (2013.01); B32B 2255/28 (2013.01); B32B 2307/4023 (2013.01); B32B 2307/7265 (2013.01); B32B 2317/12 (2013.01); B32B 2439/06 (2013.01); B32B 2439/70 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A packaging article comprising:
a web of material comprising an outer paper ply, an intermediate paper ply, and an inner paper ply, wherein the outer paper ply, intermediate paper ply, and inner paper ply each comprise a planar sheet of material having opposing flat major surfaces;
a first adhesive layer disposed between the inner paper ply and the intermediate paper ply, the first adhesive layer securing the inner paper ply to the intermediate paper ply;
a second adhesive layer disposed between the intermediate paper ply and the outer paper ply, the second adhesive layer securing the intermediate paper ply to the outer paper ply wherein the first adhesive layer and the second adhesive layer are coaligned;
wherein the outer paper ply, the intermediate paper ply, and the inner paper ply are adjoined to form a multiwall structure;
wherein the first adhesive layer and the second adhesive layer are coaligned on the multiwall structure;
wherein the first adhesive layer comprises a first plurality of adhesive spots and the second adhesive layer comprises a second plurality of adhesive spots, wherein the adhesive spots of the first plurality of adhesive spots do not overlap with the adhesive spots of the second plurality of adhesive spots;
wherein the first plurality of adhesive spots defines a grid pattern comprising a plurality of rows and a plurality of columns; and
wherein the second plurality of adhesive spots defines a grid pattern comprising a plurality of rows and a plurality of columns.