Packaging material comprising magnetisable portions

Patent metadata

Field	Value
Publication number	US-9505537-B2
Application number	US-32280810-A
Country	US
Kind code	B2
Filing date	Apr 30, 2010
Priority date	May 29, 2009
Publication date	Nov 29, 2016
Grant date	Nov 29, 2016

Abstract

A packaging material comprises a plurality of magnetizable portions thereon, the magnetizable portions comprising at least one spot per package to be formed from the packaging laminate. The packaging material further comprises at least one preparation feature for enhancing finishing of packages, wherein the at least one preparation feature is aligned with a magnetic field mark in the at least one magnetizable portion.

First claim

The invention claimed is:

1. A packaging material comprising:
a plurality of magnetisable spots thereon comprising at least one spot per package to be formed in an apparatus for forming, filling and sealing packages from the packaging material;
at least one preparation feature for enhancing finishing of packages;
wherein the at least one preparation feature and a magnetic field mark in at least one of the magnetisable spots are spaced apart from each other at a predetermined distance and are aligned with each other;
wherein a position of the magnetic field mark is set during manufacturing of the packaging material; and
the magnetic field mark is arranged on the packaging material such that the apparatus for forming, filling and sealing packages: (i) determines a position of the at least one preparation feature by reading the magnetic field mark and by using the predetermined distance of the at least one preparation feature from the magnetic field mark; and (ii) carries out an operation at the at least one preparation feature which is located at the predetermined distance from the magnetic field mark.

2. The material according to claim 1 , wherein the at least one preparation feature comprises at least one of crease lines, openings, perforations, package boundary or sealing, beginning of web or sheet of the packaging material, end of web or sheet of the packaging material, positioning of optical mark and print for package.

3. The material according to claim 1 , wherein data on the position of the magnetic field mark is encoded on the material in a readable format.

4. The material according to claim 1 wherein data on the position of the magnetic field mark is manually set in the apparatus.

5. The material according to claim 1 , wherein a distance between an area of a preparation feature and its aligned magnetic field mark is at least 2 mm.

6. The material according to claim 1 , wherein at least one of the spots for each package to be formed is positioned not more than 20% of the width of the material to form a package from a longitudinal edge of the material to form the package.

7. The material according to claim 1 , wherein the magnetic field mark carries a magnetic field pattern comprising a first magnetic field peak having a first polarity and a second magnetic field peak having a second opposite polarity.

8. The material according to claim 7 , defining a transversal direction being parallel to an imaginary axis of a roll when a web of the material is spooled, a longitudinal direction perpendicular to the transversal direction, and an imaginary line between a midpoint of the first peak and the second peak of the magnetic field pattern, wherein the magnetic field pattern is arranged such that the angle between the imaginary line and the longitudinal direction is between −10 and 10 degrees.

9. The material according to claim 7 , wherein the first and second peaks of the magnetic pattern have a distribution forming a substantially constant magnetic field along a width of the magnetic pattern in a direction perpendicular to the imaginary line, and forming a strongly decreasing magnetic field outside the width of the magnetic pattern in the direction perpendicular to the imaginary line.

10. The material according to claim 9 , wherein the width of the magnetic pattern in the direction perpendicular to the imaginary line is at least 2 mm.

11. The material according to claim 1 , wherein the magnetic field pattern comprises a first magnetic field peak having a first polarity and a second magnetic field peak being distributed such that it encircles the first peak and having a second opposite polarity.

12. The material according to claim 1 , wherein a distance between an area of a preparation feature and its aligned magnetic field mark is at least 10 mm.

13. The material according claim 1 , wherein at least one of the spots for each package to be formed is positioned not more than between 5 and 15% of the width of the material to form a package from a longitudinal edge of the material to form the package.

14. The material according to claim 7 , defining a transversal direction being parallel to an imaginary axis of a roll when a web of the material is spooled, a longitudinal direction perpendicular to the transversal direction, and an imaginary line between a midpoint of the first peak and the second peak of the magnetic field pattern, wherein the magnetic field pattern is arranged such that the angle between the imaginary line and the longitudinal direction is about 0 degrees.

15. The material according to claim 9 , wherein the width of the magnetic pattern in the direction perpendicular to the imaginary line is at least 6 mm.

16. The material according to claim 2 , wherein data on the position of the magnetic field mark is encoded on the material in a readable format.

17. The material according to claim 2 , wherein the magnetic field mark carries a magnetic field pattern comprising a first magnetic field peak having a first polarity and a second magnetic field peak having a second opposite polarity.

18. A packaging material comprising:
a packaging laminate web sized to form a plurality of packages through operation of an apparatus for forming, filling and sealing packages;
a plurality of spaced apart spots provided on the packaging laminate web so that at least one of the spots is positioned on each portion of the packaging laminate web that will form a respective one of the plurality of packages;
each of the plurality of spaced apart spots comprising magnetisable particles, at least some of the magnetisable particles being magnetized;
at least one preparation feature spaced apart from each of the plurality of spaced apart spots at a predetermined distance and aligned with one of the plurality of spaced apart spots; and
wherein the magnetic field mark is arranged on the packaging material such that the apparatus for forming, filling and sealing packages: (i) determines a position of the at least one preparation feature by reading the magnetic field mark that is aligned with the at least one preparation feature, the at least one preparation feature being at least one of a crease line formed in the packaging laminate web, a through hole extending through the packaging laminate web, a perforation formed in the packaging laminate web and a sealing portion of the packaging laminate web, and by using the predetermined distance of the at least one preparation feature from the magnetic field mark; and (ii) carries out an operation at the at least one preparation feature which is located at the predetermined distance from the magnetic field mark.

19. The packaging material of claim 18 , wherein the magnetisable particles of at least one of the plurality of spaced apart spots extends over an area of the respective spot, and less than all of the magnetisable particles of the respective slot are magnetized so that a total area of magnetized particles in the respective spot is less than the total area over which the magnetisable particles of the respective spot extend.

Assignees

• Nilsson Tommy
• Klint Ann-Charlotte
• Tetra Laval Holdings & Finance

Inventors

• Nilsson Tommy
• Klint Ann-Charlotte

Classifications

• B31B1/90

  Operations & Transport · mapped topic

• B65D5/4216

  Cards, coupons or the like formed integrally with, or printed directly on, the container or lid · CPC title

• B65D2313/04

  of magnetic type · CPC title

• B65D65/08 Primary

  with fastening elements, e.g. slide fasteners · CPC title

• B31B2201/90

  Operations & Transport · mapped topic