Packaging material comprising magnetisable portions

摘要

A packaging material comprises a plurality of magnetisable portions thereon, the magnetisable 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 magnetisable portion. Methods for writing and reading, respectively, a magnetic mark on a packaging material are also disclosed.

主权项

1. A packaging material comprising
a plurality of magnetic marks printed thereon comprising at least one magnetic mark per package to be formed from the packaging material, and said at least one magnetic mark providing a magnetic field pattern and being aligned with a preparation feature associated with an operation to be made to finish packages, wherein said at least one magnetic mark is positioned on the material such that relative speed between the material and means for reading the magnetic mark is varying, nonzero during reading, wherein the magnetic field pattern comprises a first magnetic field peak having a first polarity and a second magnetic field peak having a second opposite polarity, and wherein the material defines a transversal direction 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, and the magnetic field pattern is arranged such that the angle between the imaginary line and the longitudinal direction is between −10 and 10 degrees.