Container With Peelable Seal Assembly and Method of Making

a technology of peelable adhesive and packaging, applied in the field of containers, can solve the problems of difficult to consistently create bags with the same low opening effort, the peelable adhesive thickness has an influence on the effort required to break the seal, and the bag seal is difficult to break, so as to eliminate the variation in the effort to open various bags. , the effect of easy control

US20070104398A1Inactive Publication Date: 2007-05-10KELLOGG CO
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
Publication Date
2007-05-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

A seal assembly is disposed in a seal of a flexible bag. The seal assembly includes a first tab, a second tab, a middle layer of peelable adhesive sandwiched between the first tab and the second tab, a first outside layer of adhesive that adheres to the first side of the bag, and a second outside layer of adhesive that is compatible with the second side of the bag such that second outside layer is heat sealed to the liner. The first tab and the second tab are easily grasped and may be pulled in opposite directions to break the middle layer of peelable adhesive. The middle layer is heat resistant such that the first tab and the second tab do not melt together during the formation of the seal.
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Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims the benefit of U.S. Provisional Patent Application Ser. No. 60 / 735,452 for a FLEXIBLE BAG WITH PEELABLE SEAL ASSEMBLY AND METHOD OF MAKING, filed on Nov. 10, 2005, which is hereby incorporated by reference in its entirety.BACKGROUND OF THE INVENTION

[0002] 1. Field of the Invention

[0003] A container, particularly a flexible bag with a peelable seal assembly and a method of making the same as disclosed herein.

[0004] 2. Description of the Prior Art

[0005] Traditionally, containers and more particularly flexible bags are formed from a liner with a first side and a second side folded over the first side. The sides of the bag are heat sealed together to create a seal to enclose and seal contents within the bag. Such flexible bags are used for storing contents for a variety of goods such as for example food products and more specifically ready to eat breakfast cereals packages for crackers, cookies, candies, baking g...

Examples

Embodiment Construction

[0020] Referring to the Figures, wherein like numerals indicate corresponding parts throughout the several views, a flexible bag 20 with a peelable seal assembly 22 is shown.

[0021] The bag 20 is formed from a liner 24 which includes a first layer 26 and a second layer 28 coextruded with the first layer 26 (See FIGS. 1 and 3a). The first layer 26 is preferably high density polyethylene. The second layer 28 is a peelable adhesive, and is more preferably low density polyethylene with polybutylene. It will be understood by those of ordinary skill in the art that a peelable adhesive is an adhesive that has less adhesive strength allowing it to be peeled apart or opened. An example of a peelable adhesive is the use of an adhesive layer that has an additive mixed into the adhesive layer to lower the adhesive strength. Those of ordinary skill in the art commonly refer to this additive as a contaminant. The liner 24 is folded to define a first side 30 and a second side 32 such that the seco...