Packaging material and a method for its manufacture
First Claim
1. A packaging material for a self-supporting packaging container wall comprising at least two flexible material layers each having a surface area, the two material layers being interconnected with one another in a pattern of sealings distributed over the surface area of the at least two material layers to define between the two material layers a plurality of connected cells, said cells being filled with gas under pressure and being arranged in adjacent groups, the adjacent groups of cells being offset with respect to one another to define fold lines between adjacent offset groups of cells.
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Accused Products
Abstract
Packaging material for self-supporting packaging container walls includes two material layers that are fixed at a given spacing from one another. The two material layers define an interjacent chamber which is filled with gas under pressure. The material is produced by the material layers being sealed to one another over a portion of their surface such that a chamber is formed which is filled with, for example, air under pressure.
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Citations
26 Claims
- 1. A packaging material for a self-supporting packaging container wall comprising at least two flexible material layers each having a surface area, the two material layers being interconnected with one another in a pattern of sealings distributed over the surface area of the at least two material layers to define between the two material layers a plurality of connected cells, said cells being filled with gas under pressure and being arranged in adjacent groups, the adjacent groups of cells being offset with respect to one another to define fold lines between adjacent offset groups of cells.
- 12. A method of producing a packaging material for a self-supporting packaging container wall comprising providing at least two flexible material layers each having a surface area, interconnecting the material layers to one another over at least a portion of their surface areas to form a plurality of adjacent groups of cells with adjacent groups of cells being offset with respect to one another so that fold lines are defined by transitions between adjacent offset groups of cells, and filling the cells with gas under pressure.
- 15. The method as claimed in claim 15, wherein the anti-sealant is printed in a desired pattern on one of the material layers.
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21. A method of making a packaging container for holding consumable contents, comprising:
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providing two flexible material layers which each have oppositely disposed surfaces; interconnecting facing surfaces of the two material layers at a plurality of places to define a packing material laminate in which a plurality of cells are located between the two material layers, the cells being divided into adjacent groups with adjacent groups of cells being offset with respect to one another to define fold lines between adjacent offset groups of cells; filling the cells with gas under pressure; and folding the packaging material laminate along the fold lines to produce a packaging container having a plurality of side walls that together define an interior for holding consumable contents. - View Dependent Claims (22, 23)
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24. A packaging container comprising an end wall and a plurality of self-supporting upstanding side walls, adjacent side walls being connected to one another at corners, the side walls and end wall together defining an interior for holding consumable food, each of said side walls including a group of cells which are each filled with gas under pressure, the group of cells in each side wall being offset with respect to the groups of cells in adjacent side walls.
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25. A packaging container according to claim 25, wherein each of the side walls is comprised of at least first and second flexible material layers interconnected to one another in a pattern of sealings to define said group of cells filled with gas under pressure, the cells in each group being positioned vertically above one another.
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26. A packaging container according to claim 26, including an additional layer interposed between said first and second material layers.
Specification