PACKAGING MATERIAL COMPRISING MAGNETISABLE PORTIONS

摘要

A packaging material comprising a plurality of magnetisable portions thereon is disclosed. The packaging material is formed into a tube, sealed at one end, filled with content, sealed again to enclose the content, cut, and formed to a package. The magnetisable portions are provided as at least one spot per package to be formed from the packaging material. At least one of the magnetisable portions provides a first magnetic mark carrying a magnetic field pattern providing position information through which any twist of the formed tube can be detected.