Magnetising Device for Packaging Material Magnetic Marking
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Solution Overview
Problem
Existing packaging technologies face challenges with register marks consuming non-negligible space on packaging containers and requiring precise alignment, which can be improved by magnetic marking techniques.
Innovation Solution
A device and method for magnetising packaging materials using a magnetising device with specifically arranged magnetic components to create magnetic marks that are accurately aligned with preparation features like crease lines, enabling reliable positioning and data representation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If printing-based register marks are used, then guiding marks can be provided for optical reading, but they consume non-negligible area of the packaging exterior and require precise alignment with other operations
Solution Approach 1:
The patent replaces optical reading-based positioning with magnetic field-based positioning. Magnetic marks are applied to the packaging material and detected by magnetic sensors, eliminating the need for large printed register marks and their associated alignment requirements. This substitution of mechanical/optical systems with magnetic fields resolves the contradiction by providing precise positioning without consuming exterior area.
Solution Approach 2:
The patent changes the detection parameter from optical properties to magnetic properties. By applying magnetisable material and creating magnetic field patterns, the system transitions from optical detection (requiring large visible marks) to magnetic detection (allowing minimal physical footprint), thereby resolving the area consumption issue while maintaining positioning precision.
2Manufacturing precision
If magnets are arranged in and on a creasing roller, then magnetic marks are perfectly aligned with weakening lines, but the device complexity increases
Solution Approach 1:
The patent combines the magnetising function with the existing creasing roller structure. By integrating magnets into the creasing roller, the system achieves perfect alignment between magnetic marks and weakening lines without adding separate alignment mechanisms. This merging of functions reduces overall device complexity while maintaining high manufacturing precision.
Solution Approach 2:
The creasing roller serves dual purposes: it applies weakening lines to the packaging material and simultaneously applies magnetic marks through integrated magnets. This multi-functionality eliminates the need for separate marking devices, reducing device complexity while ensuring precise alignment between structural features and magnetic markers.
3Ease of operation
If only magnetic flux in a single direction is measured, then the reading process is simplified, but the position determination accuracy may be compromised
Solution Approach 1:
The patent enhances the magnetic field pattern by adding vertical magnetic flux components to the horizontal measurement. This dimensional enhancement of the magnetic field pattern provides more distinctive positional information, allowing accurate position determination while maintaining single-direction sensor operation. The enriched field pattern compensates for the limitation of single-direction measurement.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The magnetic marking system allows for efficient use of space, precise alignment, and reliable data representation, enhancing the finishing and formation of packaging containers while reducing material consumption and improving reading accuracy.
Implementation Method 1
A magnetising device is provided for magnetising a magnetisable area of a web of packaging material. 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, wherein poles of a first and same polarity are arranged adjacent in an opposed relationship, wherein poles of a second and the same polarity are arranged remote from each other in a linear arrangement.
Data Source
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AI summary
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.