US 12,466,626 B2
Expandable easy opening dough package
Scott William Huffer, Hartsville, SC (US)
Assigned to TOPPAN Packaging Americas Holdings, Inc., Charlotte, NC (US)
Filed by TOPPAN Packaging Americas Holdings, Inc., Charlotte, NC (US)
Filed on Jan. 25, 2019, as Appl. No. 16/257,501.
Application 16/257,501 is a division of application No. 14/616,246, filed on Feb. 6, 2015, granted, now 10,220,999.
Prior Publication US 2019/0152668 A1, May 23, 2019
Int. Cl. B65D 75/58 (2006.01); B29C 65/00 (2006.01); B29C 65/48 (2006.01); B32B 3/26 (2006.01); B32B 7/12 (2006.01); B32B 15/04 (2006.01); B32B 15/08 (2006.01); B32B 27/32 (2006.01); B32B 27/36 (2006.01); B65D 75/26 (2006.01); B31B 70/00 (2017.01); B31B 70/62 (2017.01); B31B 170/20 (2017.01); B65D 85/72 (2006.01)
CPC B65D 75/5833 (2013.01) [B29C 65/00 (2013.01); B29C 65/4825 (2013.01); B32B 3/266 (2013.01); B32B 7/12 (2013.01); B32B 15/04 (2013.01); B32B 15/08 (2013.01); B32B 27/32 (2013.01); B32B 27/36 (2013.01); B65D 75/26 (2013.01); B31B 70/252 (2017.08); B31B 70/626 (2017.08); B31B 2170/20 (2017.08); B32B 2255/10 (2013.01); B32B 2307/31 (2013.01); B32B 2307/4023 (2013.01); B32B 2307/412 (2013.01); B32B 2307/546 (2013.01); B32B 2307/7244 (2013.01); B32B 2307/7246 (2013.01); B32B 2307/7265 (2013.01); B32B 2307/732 (2013.01); B32B 2307/75 (2013.01); B32B 2435/02 (2013.01); B32B 2439/40 (2013.01); B32B 2439/70 (2013.01); B65D 85/72 (2013.01); B65D 2205/025 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method of making a flexible easy opening package comprising the steps of:
providing an inner layer of flexible material and an outer layer of flexible material in sheet form;
pattern applying a pressure sensitive adhesive to an outer facing surface of the inner layer in a first predetermined pattern of the inner layer;
drying the pressure sensitive adhesive on the inner layer;
applying a permanent adhesive onto the outer facing surface of the inner layer in a second predetermined pattern such that the permanent adhesive does not cover the pressure sensitive adhesive;
applying a heat seal to the outer facing surface of the inner layer;
adhesively joining the inner layer and the outer layer via the pressure sensitive adhesive and the permanent adhesive to form a laminate film;
forming an undercut in the inner layer which is in substantial registration with the heat seal; and
forming an overcut in the outer layer substantially in registration with the pressure sensitive adhesive, the overcut defining an elongated pull tab wherein:
the step of applying the heat seal comprise applying the heat seal in a manner such that the heat seal can withstand an internal pressure force of the easy opening package until the pull tab is sufficiently pulled away from the inner layer.