Combination RFID/EAS Inlay Lamination for Independent Quality Control

Solution Overview

Problem

Combination RFID/EAS tags present technical issues and additional costs, as existing methods do not efficiently integrate both types of tags, particularly in retail applications where both inventory management and security are required.

Innovation Solution

A method of producing combination RFID/EAS tags by laminating first and second type inlays on substrates using a converting or laminating machine, allowing for independent quality-control testing and functional independence of RFID and EAS inlays, with the EAS inlay positioned between the legs of the RFID inlay to minimize surface area.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If separate RFID and EAS tags are used, then both inventory management and security functions are achieved, but device complexity and cost increase

Engineering Contradiction:

Improvedual functionality (RFID and EAS)VSAvoidtag structure complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent combines RFID and EAS tags into a single integrated tag structure. The RFID antenna and EAS antenna are integrated on the same substrate, sharing common elements like the adhesive layer and substrate material. This merging approach achieves both inventory management (RFID) and security (EAS) functions simultaneously while reducing the overall number of separate components needed.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The integrated tag is designed to perform multiple functions: RFID communication for inventory tracking and EAS detection for security. The tag structure incorporates both RFID circuitry and EAS resonant circuit elements, allowing a single tag to serve dual purposes in retail applications where both capabilities are required.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If separate RFID and EAS tags are used, then both functions are achieved, but manufacturing cost increases

Engineering Contradiction:

Improvedual functionality (RFID and EAS)VSAvoidmanufacturing cost

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent combines RFID and EAS tags into a single integrated tag structure. The RFID antenna and EAS antenna are integrated on the same substrate, sharing common elements like the adhesive layer and substrate material. This merging approach achieves both inventory management (RFID) and security (EAS) functions simultaneously while reducing the overall number of separate components needed.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The integrated tag is designed to perform multiple functions: RFID communication for inventory tracking and EAS detection for security. The tag structure incorporates both RFID circuitry and EAS resonant circuit elements, allowing a single tag to serve dual purposes in retail applications where both capabilities are required.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Device complexity

If traditional tag integration methods are used, then both tags are combined, but quality-control efficiency decreases

Engineering Contradiction:

Improvetag integrationVSAvoidquality-control efficiency

Core Design Contradiction:

Device complexityVSProductivity

Solution Approach 1:

The patent applies segmentation by allowing the RFID inlay and EAS inlay to be manufactured and tested separately before final integration. This enables independent quality-control testing of each inlay type, ensuring that defects are identified and addressed in the specific inlay type where they occur, rather than requiring retesting of an integrated assembly. The separate inlays are then combined through lamination to form the final dual-function tag.

Inventive Principle:

Principle #1Segmentation

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 efficient integration of RFID and EAS tags with independent quality-control, reducing wastage and surface area requirements, while maintaining functional independence and cost-effectiveness.

Implementation Method 1

Radio frequency identification (RFID) uses electromagnetic fields to identify and track tags attached to objects

Methodology Applied

Scientific EffectElectromagnetic radiation: Electromagnetic Induction

Implementation Method 2

Sensing an RF EAS tag is achieved by sweeping around the resonant frequency and detecting a dip

Methodology Applied

Scientific EffectResonance: Resonance

Implementation Method 3

Deactivation for EAS tags is typically achieved using a deactivation pad, which partially destroys the capacitor by applying a strong electromagnetic field at the resonant frequency, inducing a voltage that exceeds the capacitor's breakdown voltage

Methodology Applied

Scientific EffectElectromagnetic induction: Electromagnetic Induction

Data Source

PatentUS20250265437A1Combination RFID/EAS tags and methods of manufacture

Publication Date: 2025.08.21 SML BRAND IDENTIFICATION SOLUTIONS LTD

AI summary

Disclosed are combination radio frequency identification (RFID) and electronic article surveillance (EAS) tags and methods of producing such tags. The claimed method is characterized by feeding a first plurality of first type inlays and a second plurality of second type inlays into a laminating machine, wherein each of the first and second type inlays are formed on first and second substrates, respectively; laminating the first type inlays to the second type inlays, thereby forming a plurality of pairs of the first and second type inlays, each of the pairs comprising an RFID inlay and an EAS inlay, wherein the RFID inlay and the EAS inlay of each pair are functionally independent.