US 12,129,088 B2
Polymeric wrapper
Joseph D. Gagne, Holyoke, MA (US)
Assigned to Sonoco Development, Inc., Hartsville, SC (US)
Filed by Sonoco Development Inc., Hartsville, SC (US)
Filed on Nov. 4, 2022, as Appl. No. 17/981,020.
Application 17/981,020 is a division of application No. 16/996,169, filed on Aug. 18, 2020, abandoned.
Claims priority of provisional application 62/890,798, filed on Aug. 23, 2019.
Prior Publication US 2023/0125926 A1, Apr. 27, 2023
Int. Cl. B65D 65/02 (2006.01); B32B 7/02 (2019.01); B32B 27/08 (2006.01); B32B 27/30 (2006.01); B32B 27/32 (2006.01)
CPC B65D 65/02 (2013.01) [B32B 7/02 (2013.01); B32B 27/08 (2013.01); B32B 27/306 (2013.01); B32B 27/32 (2013.01); B32B 2250/05 (2013.01); B32B 2250/246 (2013.01); B32B 2307/72 (2013.01); B32B 2439/70 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A method for making a product wrapper having dead bend characteristics, the method comprising:
co-extruding:
a first polyethylene layer comprising low density polyethylene;
a second polyethylene layer affixed to the first layer, wherein the second polyethylene layer comprises high density polyethylene;
a first tie layer affixed to the second layer, opposite the first layer;
a barrier layer affixed to the tie layer, opposite the second layer;
a second tie layer affixed to the barrier layer, opposite the first tie layer;
a third polyethylene layer affixed to the second tie layer, opposite the barrier layer, wherein the third polyethylene layer comprises high density polyethylene; and
a fourth polyethylene layer affixed to the third polyethylene layer, opposite the second tie layer, wherein the fourth polyethylene layer comprises low density polyethylene;
wrapping the wrapper about a product; and
closing the wrapper using only dead bend properties.