METHOD AND DEVICE FOR MAGNETISING A PACKAGE MATERIAL, AND PACKAGING MATERIAL MAGNETISED WITH SAID METHOD

• US 20170297760A1
• Filed: 09/11/2015
• Published: 10/19/2017
• Est. Priority Date: 09/23/2014
• Status: Active Grant

• Current Assignee: Tetra Laval Holdings & Finance SA (Tetra Laval Holdings BV)
• Original Assignee: Tetra Laval Holdings & Finance SA (Tetra Laval Holdings BV)
• Inventors: NILSSON, Tommy
• Granted Patent: US 10,364,059 B2
• Time in Patent Office: Days
• CPC Class Codes: B31B 2100/00 Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs
• CPC Class Codes: B31B 2155/001 by folding webs longitudinally
• CPC Class Codes: B31B 50/006 Controlling; Regulating; Measuring; Improving safety
• CPC Class Codes: B31B 50/88 Printing; Embossing
• CPC Class Codes: B31B 70/006 Controlling; Regulating; Measuring; Safety measures
• CPC Class Codes: B31B 70/256 using tools mounted on a drum
• CPC Class Codes: B65D 5/4212 Information or decoration elements, e.g. content indicators, or for mailing B65D5/522 takes precedence
• CPC Class Codes: B65D 5/4287 the container being formed by folding-up portions connected to a central panel from all sides, adjacent sides being interconnected by gusset folds and the container being maintained in erected condition by means of the separate connectors coacting with the gusset folds
• CPC Class Codes: B65D 65/38 Packaging materials of special type or form
• CPC Class Codes: B65H 18/103 Reel-to-reel type web winding and unwinding mechanisms
• CPC Class Codes: B65H 18/145 Reel-to-reel type web winding and unwinding mechanisms
• CPC Class Codes: B65H 2301/5131 Magnetising
• CPC Class Codes: B65H 2301/5152 Cutting partially, e.g. perforating
• CPC Class Codes: B65H 2553/22 Magnetic detectors, e.g. Hall detectors
• CPC Class Codes: B65H 2801/81 Packaging machines
• CPC Class Codes: G01R 33/02 Measuring direction or magnitude of magnetic fields or magnetic flux G01R33/20 takes precedence
• CPC Class Codes: G06K 19/06187 with magnetically detectable marking
• CPC Class Codes: G06K 7/084 sensing magnetic material by relative movement detecting flux changes without altering its magnetised state

Abstract

A magnetising device in a web processing machine for magnetising a magnetisable area of a web of packaging material is disclosed. The magnetising device comprises a first magnetic component having a north pole and a south pole, and a second magnetic component having a north pole and a south pole. Poles of a first and same polarity are arranged adjacent in an opposed relationship and poles of a second and the same polarity are arranged remote from each other.

Claims

1. A magnetising device in a web processing machine for magnetising a magnetisable area of a web of packaging material, said magnetising device comprising a first magnetic component having a north pole and a south pole, and a second magnetic component having a north pole and a south pole, wherein poles of a first and same polarity are arranged adjacent in an opposed relationship.

2. The magnetising device of claim 1, wherein poles of a second and the same polarity are arranged remote from each other.

3. The magnetising device of claim 1, wherein the magnetic poles are arranged in a linear arrangement.

4. The magnetising device of claim 1, wherein the magnetising device is configured to arrange the magnetic mark in a longitudinal direction of the web of packaging material, such that the poles are distributed in the longitudinal direction.

5. A packaging material comprising a plurality of magnetisable portions thereon comprising at least one spot per package to be formed from the packaging material, wherein at least one of the magnetisable portions provides a first magnetic mark carrying a magnetic field patter and wherein the magnetic pattern of the first magnetic mark is represents data or a position on the packaging material, wherein the magnetic field patter comprises a first magnetic component having a north pole and a south pole, and a second magnetic component having a north pole and a south pole, wherein poles of a first and same polarity are arranged adjacent in an opposed relationship and wherein poles of a second and the same polarity are arranged remote from each other.

6. The packaging material of claim 5, wherein the magnetic poles are arranged in a linear arrangement.

7. The packaging material of claim 5, wherein the packaging material is formed from a web of packaging material and wherein the magnetic mark is arranged in a longitudinal direction of the packaging material, such that the poles are distributed in the longitudinal direction.

8. The packaging material of claim 5, wherein at least one of the magnetisable portions provides a second magnetic mark carrying a magnetic field pattern aligned with at least one preparation feature for enhancing finishing of packages.

9. The packaging material of claim 8, wherein the preparation feature comprises any of a group comprising crease lines, openings, perforations, package boundary or sealing, beginning of a web or sheet of the packaging material, end of a web or sheet of the packaging material, positioning of optical mark, compression or print of a decor element of a package to be formed from the packaging material.

10. The packaging material of claim 5, whereas the magnetisable portion contain a magnetisable ink, comprising magnetisable particles;

a solvent; and

a binder to disperse the magnetisable particles and to ensure adhesion to the packaging material.

11. The packaging material of claim 7, wherein said 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 longitudinal direction, and forming a strongly decreasing magnetic field outside the width of the magnetic pattern in the direction perpendicular to the longitudinal direction.

12. The packaging material of claim 11, wherein the width is at least 2 mm.

13. The packaging material of claim 11, wherein the width is at least 4 mm.

14. The packaging material of claim 11, wherein the width is at least 6 mm.