US 12,252,324 B2
Venting system for ovenable containers
Scott William Huffer, Hartsville, SC (US)
Assigned to Sonoco Development, Inc., Hartsville, SC (US)
Filed by SONOCO DEVELOPMENT, INC., Hartsville, SC (US)
Filed on Oct. 25, 2023, as Appl. No. 18/494,271.
Application 18/494,271 is a continuation of application No. 17/682,579, filed on Feb. 28, 2022, granted, now 11,834,250.
Application 17/682,579 is a continuation of application No. 16/446,873, filed on Jun. 20, 2019, granted, now 11,292,654, issued on Apr. 5, 2022.
Prior Publication US 2024/0051728 A1, Feb. 15, 2024
Int. Cl. B65D 81/34 (2006.01); B32B 1/00 (2006.01); B32B 3/26 (2006.01); B32B 7/12 (2006.01); B32B 27/36 (2006.01); B65D 77/20 (2006.01); B65D 75/58 (2006.01)
CPC B65D 81/3461 (2013.01) [B32B 1/00 (2013.01); B32B 3/266 (2013.01); B32B 7/12 (2013.01); B32B 27/36 (2013.01); B65D 77/2056 (2013.01); B65D 81/3453 (2013.01); B32B 2307/31 (2013.01); B32B 2307/412 (2013.01); B32B 2307/7242 (2013.01); B32B 2307/7265 (2013.01); B32B 2439/70 (2013.01); B65D 75/5838 (2013.01); B65D 77/2096 (2013.01); B65D 2205/00 (2013.01); B65D 2401/15 (2020.05)] 19 Claims
OG exemplary drawing
 
1. An ovenable lidding comprising:
an outer flexible structure having an outer cut line;
an inner flexible structure affixed to the outer flexible structure, the inner flexible structure having an inner cut line, wherein the inner cut line is offset from the outer cut line;
an adhesive layer which adheres the outer flexible structure to the inner flexible structure, wherein the adhesive layer comprises:
a channel of adhesive which surrounds both the outer cut line and the inner cut line, wherein the channel of adhesive defines a perimeter of at least one adhesive-free valve chamber within said channel, and wherein the valve chamber comprises at least a portion of the outer cut line and the inner cut line.