Packaging material comprising magnetisable portions

Patent metadata

Field	Value
Publication number	US-9238535-B2
Application number	US-201013322852-A
Country	US
Kind code	B2
Filing date	May 10, 2010
Priority date	May 29, 2009
Publication date	Jan 19, 2016
Grant date	Jan 19, 2016

Abstract

A packaging material comprises a plurality of magnetizable portions thereon. The magnetizable portions are provided as at least one spot per package to be formed from the packaging material. The spots comprises magnetizable particles.

First claim

The invention claimed is:

1. A packaging material comprising:
a packaging laminate web sized to form a plurality of packages and extending length-wise along a longitudinal direction;
a plurality of spots provided on the packaging laminate web and spaced apart along the longitudinal direction so that at least one of the spots is positioned on a portion of the packaging laminate web that will form each of the plurality of packages;
each of the plurality of spaced apart spots comprising magnetisable particles, the magnetisable particles extending over an area of each respective spot, and some of the magnetisable particles in each spot being magnetized so that a total area of magnetized particles in each respective spot is less than the total area over which the magnetisable particles of the respective spot extend.

2. The material according to claim 1 , wherein at least one of the spots of magnetisable particles possesses a geometrical shape chosen from the group consisting of rectangular, square, circular, oval and elongated shape.

3. The material according to claim 1 , wherein at least one of the spots of magnetisable particles has an area less than 25 mm 2 .

4. The material according to claim 1 , wherein at least one of the spots of magnetisable particles is printed in a print area and comprises magnetisable particles in an amount between 0.5 g and 4 g per m 2 print area.

5. A packaging material comprising a packaging laminate web configured to form a plurality of packages and extending length-wise along a longitudinal direction, with plural spots provided on the packaging laminate web and spaced apart along the longitudinal direction such that at least one spot is provided on each of the plurality of packages to be formed, each of the plural spots including magnetised particles in a magnetized area possessing an outer periphery, each of the plural spots also including magnetisable particles in a magnetisable portion which extends outwardly beyond the outer periphery of the magnetized area by at least 3 mm.

6. The material according to claim 5 , wherein the outer periphery of the magnetized area possess a rectangular shape with a length L and a width w, the magnetisable portion possessing a length of at least L+3 mm and a width of at least w+3 mm.

7. The material according to claim 5 , wherein each of the spots has an area less than 25 mm 2 .

8. The material according to claim 5 , wherein the magnetisable particles are printed in the magnetisable portion in an amount between 0.5 g and 4 g per m 2 print area.

Assignees

• Nilsson Tommy
• Klint Ann-Charlotte
• Bergholtz Lars
• Ulvros Istvan
• Tetra Laval Holdings & Finance

Inventors

• Nilsson Tommy
• Klint Ann-Charlotte
• Bergholtz Lars
• Ulvros Istvan

Classifications

• B32B41/00

  Arrangements for controlling or monitoring lamination processes; Safety arrangements · CPC title

• B65D65/38 Primary

  Packaging materials of special type or form · CPC title

• B65B57/00

  Automatic control, checking, warning, or safety devices (registering wrapping or container-forming material fed from rolls B65B41/18) · CPC title

• Y10T428/24893

  including particulate material · CPC title