US 12,391,426 B2
Reinforced paperboard tray, method for manufacturing a reinforced paperboard tray, and method for using a paperboard tray
Ronald J. Binshtok, Quinton, VA (US); William Statelman, Richmond, VA (US); and Trisha J. Massenzo, Richmond, VA (US)
Assigned to WestRock MWV, LLC, Atlanta, GA (US)
Filed by WestRock MWV, LLC, Atlanta, GA (US)
Filed on Nov. 25, 2020, as Appl. No. 17/104,195.
Claims priority of provisional application 62/940,506, filed on Nov. 26, 2019.
Prior Publication US 2021/0155368 A1, May 27, 2021
Int. Cl. B65D 5/44 (2006.01); B65D 5/20 (2006.01); B65D 5/56 (2006.01); B65D 5/62 (2006.01)
CPC B65D 5/445 (2013.01) [B65D 5/20 (2013.01); B65D 5/563 (2013.01); B65D 5/62 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A reinforced paperboard tray comprising:
a coated paperboard in a form of a bottom wall, a side wall extending upwardly around the bottom wall, and a curved flange extending outwardly around the side wall, the coated paperboard comprising a single-ply paperboard substrate having a first major side and a second major side, the first major side corresponding to an upper side of the bottom wall; and a barrier coating on the first major side of the single-ply paperboard substrate; and
a paperboard reinforcement attached to the curved flange, wherein the paperboard reinforcement comprises an integral paperboard reinforcement attached to a bottom surface of the curved flange, wherein the integral paperboard reinforcement is attached to an outer surface of the side wall and to a portion of the bottom wall such that the integral paperboard reinforcement extends to a center of the bottom wall meeting or overlapping an opposing integral paperboard reinforcement, wherein the integral paperboard reinforcement is formed from the same coated paperboard that forms the bottom wall, the side wall, and the curved flange.