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Easy open pouch with energy activation

a technology of energy activation and pouches, applied in the field of flexible packaging, can solve problems such as tear lines

Inactive Publication Date: 2006-11-30
SONOCO DEV INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0005] In a further embodiment of the present invention a method is provided for creating a tear line in a sheet of flexible packaging material. The method includes providing a sheet that comprises one or more films. A pattern of metal or similar particles is applied on the one side of the sheet or films. The pattern of particles is dosed with an energy source causing the particles to create heat and penetrate into the sheet or film material; thus, creating a weakened area and a tear line along the particle pattern.

Problems solved by technology

The particles are exposed to or receive a dose of energy causing them to create heat and penetrate or weaken the film, thereby creating a tear line.

Method used

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  • Easy open pouch with energy activation
  • Easy open pouch with energy activation
  • Easy open pouch with energy activation

Examples

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Embodiment Construction

[0012] In the drawings, where like numerals identify like elements, there is shown in FIG. 1 a sheet of flexible packaging material, which is generally designated by the numeral 10. As used herein, the term “sheet of flexible packaging material” includes materials used in the manufacture of flexible packages (e.g., candy wrappers) and materials used in covering and / or sealing rigid or semi-rigid containers (e.g., microwavable dinner containers).

[0013] As shown in FIG. 1, the sheet 10 includes a first film layer 14 having an outer side 16 and an inner side 18. The sheet 10 further includes a pattern of particles 12 on the outer side 16 of the film 14. The particles 12 are dosed with or exposed to an energy source so as to create heat and to penetrate into the surface of the outer side 16 of the film 14. The heated penetration of the particles 12 into the film 14 weakens the film 14, creating a “tear line”. This weakened area of the film is defined herein as a “tear line” regardless ...

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Abstract

The present invention includes a sheet of flexible packaging material that includes one or more films having an inner side and an outer side. On the outer side of at least one film is a pattern of activation particles, preferably metal flakes or the like. The pattern of particles is energy activated causing the pattern to heat and penetrate or weaken at least a portion of the film, creating a tear line in the wall of a package formed from the sheet. A method for creating a tear line in a sheet of flexible packaging material and the formation of the material into a package with a tear line in the side wall or the like is also defined.

Description

TECHNICAL FIELD [0001] The present invention relates to the field of flexible packaging. Particularly, the invention relates to flexible packaging material with an easy-open tear line therein and methods for making a flexible packaging material with a tear line. BACKGROUND OF THE INVENTION [0002] There are a variety of methods used to perforate, score, notch or otherwise create a line of weakness in a flexible packaging material for opening a sealed package. Many of these methods include using caustic or acidic solutions to remove a portion of the material, using mechanical means to cause a line of weakness in the material, and / or re-orienting the substrate material to improve tear efficiency. These methods often produce a packaging material that includes one or more of the following deficiencies: lack of non-linear tear lines in the material, lack of cross directional tear lines in the material, or high cost. SUMMARY OF THE INVENTION [0003] One embodiment of the present invention i...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B65D33/00
CPCB65D75/5844B65D75/5833
Inventor HUFFER, SCOTT W.
Owner SONOCO DEV INC
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