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US 12,466,626 B2Granted
Expandable easy opening dough package
AssigneeTOPPAN Packaging Americas Holdings, Inc.
InventorScott William Huffer
Life of this patent
Estimating the term…
Abstract
An easy opening flexible package and method of making same is provided. The package is suitable for containing raw dough and other products, especially products that create pressure within the package by expansion or by giving off gas such as carbon dioxide.
Claims7
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.
7 more elements
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 laver:
- 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;
- forming an overcut in the outer layer substantially in registration with the pressure sensitive adhesive, the overcut defining an elongated pull tab;
- and
- forming micro-perforations in the inner layer in an area of the inner layer that, upon lifting the pull tab, is exposed before the undercut.
7 more elements
Dependencies are inferred from the claim text.