Patent · US Active

System and method for producing a packaging laminate and packages made from the packaging laminate

US7765773B2 · kind B2 · utility

6Cited by

10References

10Claims

0Family size

Assignee

Tetra Laval Holdings & Finance S.A. · CH

Inventors

Tommy Nilsson · Älvsbyn, SE
Håkan Svenson · Landskrona, SE
Hans Johansson · Lomma, SE
Lars Bergholtz · Hagfors, SE
Claes Ingvert · Lund, SE

Key dates

Filing date	Jan 27, 2006
Grant date	Aug 3, 2010
Priority date	—
Expiry date	Aug 2, 2026

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB65H2553/22
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A system and a method for production of a packaging laminate that comprises a layer containing magnetizable particles. The method involves marking faults, such as single spot defects and splices, on the packaging laminate by the application of a magnetic field to make a magnetic mark on the packaging laminate. A packaging device is arranged to sense the presence of the magnetic mark related to a package made from the packaging laminate.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.