	US 12,226,993 B2
	Recyclable packaging film and article with mechanically pre-slit controlled tear line
Sophia R. Luettke, Cincinnati, OH (US); Seyed Hesamoddin Tabatabaei, Mason, OH (US); Daniel T. Senter, Crestwood, MO (US); Kevin L. Lemmons, Jackson, MO (US); and Brian J. Schiermeier, White House, TN (US)
Assigned to ProAmpac Holdings Inc., Cincinnati, OH (US)
Filed by ProAmpac Holdings Inc., Cincinnati, OH (US)
Filed on Sep. 16, 2022, as Appl. No. 17/946,987.
Claims priority of provisional application 63/245,360, filed on Sep. 17, 2021.
Prior Publication US 2023/0100176 A1, Mar. 30, 2023
Int. Cl. B32B 3/24 (2006.01); B32B 1/00 (2006.01); B32B 3/26 (2006.01); B32B 7/12 (2006.01); B32B 27/08 (2006.01); B32B 27/32 (2006.01); B32B 33/00 (2006.01); B32B 37/00 (2006.01); B32B 37/12 (2006.01); B32B 38/00 (2006.01); B32B 43/00 (2006.01); B65D 75/12 (2006.01); B65D 75/20 (2006.01); B65D 75/30 (2006.01)

CPC B32B 7/12 (2013.01) [B32B 1/00 (2013.01); B32B 3/266 (2013.01); B32B 27/08 (2013.01); B32B 27/32 (2013.01); B32B 33/00 (2013.01); B32B 37/0053 (2013.01); B32B 37/12 (2013.01); B32B 38/0004 (2013.01); B32B 38/145 (2013.01); B32B 43/003 (2013.01); B32B 2250/02 (2013.01); B32B 2250/242 (2013.01); B32B 2255/10 (2013.01); B32B 2255/26 (2013.01); B32B 2307/31 (2013.01); B32B 2307/546 (2013.01); B32B 2307/7244 (2013.01); B32B 2307/7265 (2013.01); B32B 2323/04 (2013.01); B32B 2439/00 (2013.01); B65D 75/12 (2013.01); B65D 75/20 (2013.01); B65D 75/30 (2013.01); Y10S 493/93 (2013.01); Y10S 493/963 (2013.01); Y10T 428/15 (2015.01)]

20 Claims

1. A method of forming a flexible packaging film, comprising:

providing a first web including a polymer sealant layer, the first web having a first major surface and a second major surface opposite the first major surface;

providing a second web including a polymer outer layer, the second web having a third major surface and a fourth major surface opposite the third major surface;

applying an adhesive layer to the second major surface;

laminating the first web to the third major surface; and

prior to said laminating, forming one or more continuous and uninterrupted slits extending in a machine direction in the second web, each of said one or more slits completely penetrating the second web.