Magnetizing Pre-Printed Flexible Magnetic Sheets

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Solution Overview

Problem

Thinner flexible magnetic sheet materials pose a challenge for effective magnetization due to the lack of efficient post-printing magnetization processes, which limits their use in products requiring magnetic properties similar to thicker sheets.

Innovation Solution

A system that magnetizes pre-printed flexible magnetic sheets using a combination of magnetic fields and frictional contact, allowing for the creation of high-flux regions without physically contacting the printed surface, utilizing a setup with rotating magnet bars and flux-conducting spacers to achieve magnetic imprinting.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If thinner flexible magnetic sheet material is used, then cost is reduced, but magnetization effectiveness deteriorates

Engineering Contradiction:

Improvemagnetization effectivenessVSAvoidsheet thickness

Core Design Contradiction:

ReliabilityVSLength of moving object

Solution Approach 1:

The patent changes the magnetic field parameters by using multiple magnet bars with alternating polarities arranged in a specific configuration. This creates a high-flux magnetic field environment that enables effective magnetization of thinner sheets (below 15 mil) by increasing the magnetic flux density and optimizing the field distribution across the sheet thickness.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent introduces flux-conducting spacers as intermediary elements between the magnet bars and the flexible magnetic sheet. These spacers serve as magnetic flux conduits that concentrate and direct the magnetic field lines through the thin sheet material, enhancing magnetization effectiveness without requiring physical contact with the printed surface.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Force

If traditional contact-based magnetization is used, then magnetization force is sufficient, but printed surface is damaged

Engineering Contradiction:

Improvemagnetic forceVSAvoidsurface damage

Core Design Contradiction:

ForceVSObject-affected harmful factors

Solution Approach 1:

The flux-conducting spacers act as intermediaries that transmit magnetic force to the sheet without requiring direct contact between the magnet bars and the printed surface. This intermediary mechanism delivers sufficient magnetic force for effective magnetization while preventing mechanical damage to the printed indicia.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces the traditional mechanical contact-based magnetization system with a magnetic field-based system. Instead of pressing magnets directly against the sheet, the invention uses arranged magnet bars that generate a magnetic field penetrating through the sheet, substituting mechanical force with electromagnetic interaction to avoid surface damage.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Ease of manufacture

If thicker flexible magnetic sheet material is used, then magnetization is easier, but cost increases

Engineering Contradiction:

Improvemagnetization easeVSAvoidsheet thickness

Core Design Contradiction:

Ease of manufactureVSLength of moving object

Solution Approach 1:

The patent optimizes magnetic field parameters including flux density, field distribution, and exposure time to achieve easy and effective magnetization of thin sheets. By adjusting these parameters, the invention makes thin sheet magnetization as easy and reliable as traditional thick sheet magnetization, eliminating the need to use thicker materials for ease of manufacture.

Inventive Principle:

Principle #35Parameter changes

4Manufacturing precision

If post-printing magnetization is performed, then printing quality is maintained, but magnetization effectiveness is reduced

Engineering Contradiction:

Improveprinting qualityVSAvoidmagnetization effectiveness

Core Design Contradiction:

Manufacturing precisionVSReliability

Solution Approach 1:

The flux-conducting spacers serve as intermediaries that enable effective magnetization of pre-printed sheets by concentrating magnetic flux through the sheet without requiring contact with the printed surface. This intermediary mechanism overcomes the limitation of traditional post-printing magnetization processes that fail to adequately magnetize thin pre-printed sheets.

Inventive Principle:

Principle #24Intermediary (Mediator)

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

Enables the magnetization of thinner flexible magnetic sheets to levels comparable to thicker materials, reducing costs associated with surface damage and enhancing magnetic pull strength, while maintaining the integrity of the printed surface.

Implementation Method 1

A system that magnetizes pre-printed flexible magnetic sheets using a combination of magnetic fields and frictional contact

Methodology Applied

Scientific EffectMagnetic field: Magnetic Field

Implementation Method 2

A system that magnetizes pre-printed flexible magnetic sheets using a combination of magnetic fields and frictional contact

Methodology Applied

Scientific EffectFriction: Friction

Data Source

PatentUS8410880B2Material magnetizer systems

Publication Date: 2013.04.02 MAGNUM MAGNETICS CORP

AI summary

A system for improved magnetization of flexible magnetic sheet material, such as magnetic rubber. More particularly, this invention relates to providing a system for magnetization of pre-printed flexible magnetic sheet material.