US 12,064,943 B1
Semi-corrugated paperboard panels and method for production of same
James Alan Cummings, Phillips, WI (US)
Assigned to Semi Corr Containers, Inc., Phillips, WI (US)
Filed by Semi Corr Containers, Inc., Phillips, WI (US)
Filed on Dec. 20, 2023, as Appl. No. 18/390,443.
Application 18/390,443 is a continuation in part of application No. 18/243,403, filed on Sep. 7, 2023, granted, now 11,938,705.
Application 18/243,403 is a continuation in part of application No. 18/123,675, filed on Mar. 20, 2023, granted, now 11,794,439, issued on Oct. 24, 2023.
This patent is subject to a terminal disclaimer.
Int. Cl. B32B 29/08 (2006.01); B31F 1/28 (2006.01); B32B 29/00 (2006.01)
CPC B32B 29/08 (2013.01) [B31F 1/2813 (2013.01); B32B 29/005 (2013.01); B31F 1/2818 (2013.01); B31F 2201/0733 (2013.01); B31F 2201/0787 (2013.01); B32B 2250/26 (2013.01); B32B 2553/00 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A paperboard product comprising:
a top liner;
a fluted medium of a first flute type having opposed tips directed in a downward direction and upward direction, respectively, bonded to the top liner to define a singleface web with exposed flute tips directed in the downward direction;
a bottom liner; and
an inverted creased base layer with multiple cross flute bond lines creased in-line at intervals across a second fluted web with the bond lines facing in an upward direction;
wherein the singleface web is bonded directly to the flutes and cross flute bond lines of the inverted creased base layer of the second flute type; and
wherein the creased side of the inverted base layer of the second flute type is bonded to the bottom liner.