Single-Layer Flexible RFID Device with Encapsulated Tag
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Solution Overview
Problem
Existing RFID devices with two fabric layers are prone to separation over time, exposing the antenna to external conditions and are not suitable for aluminum tags, leading to defects and limited durability, especially under thermal and chemical treatments.
Innovation Solution
A single-layer flexible RFID device with an RFID tag encapsulated between the inner and outer coatings, using a polyurethane-based polymer coating to protect the tag and prevent separation, with the option of a second flexible layer sandwiched between the coatings for enhanced protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two fabric layers are used to protect the RFID antenna, then protection against external conditions is provided, but the layers separate over time exposing the antenna and reducing durability
Solution Approach 1:
The patent merges the protective coating and flexible layer into a single integrated structure where the coating is applied directly to the flexible layer, eliminating the interface between separate layers and preventing separation over time while maintaining protection against external conditions
Solution Approach 2:
The patent uses a composite structure combining a flexible laminar material with a protective coating layer, where the coating material is selected to be chemically and thermally compatible with both the flexible layer and the RFID antenna, creating a stable multi-material system that resists separation
2Reliability
If two fabric layers are used for RFID protection, then insulation against external conditions is provided, but more coating material is required increasing environmental impact
Solution Approach 1:
The patent combines the protective function and flexible support into a single layer structure with coating applied directly to the flexible laminar material, eliminating the need for separate protective fabrics and reducing total coating material consumption while maintaining insulation protection
3Reliability
If traditional fabric layers are used, then RFID tag protection is provided, but the structure is not suitable for aluminum tags and thermal/chemical treatments
Solution Approach 1:
The patent changes the material parameters of the flexible laminar layer and coating to be chemically inert and thermally stable, specifically selecting materials that do not react with aluminum tags or undergo degradation during thermal and chemical treatments, thereby achieving compatibility with aluminum tags
Solution Approach 2:
The patent employs a composite material system where the flexible laminar material and coating are specifically selected for their chemical compatibility with aluminum tags and resistance to thermal/chemical treatments, creating a versatile structure suitable for aluminum-based RFID tags
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 solution ensures prolonged use, flexibility, and environmental sustainability by preventing separation and damage from extreme conditions, making it suitable for textile garments and aluminum tags.
Implementation Method 1
the inner face comprises a coating, with the RFID tag being encapsulated between the inner face and the coating
Implementation Method 2
the RFID tag is fixed to the inner face of the layer by means of an adhesive
Data Source
AI summary
The invention relates to an RFID device comprising:a layer of flexible laminar material, comprising:an outer face, andan inner face, andan RFID tag, fixed to the inner face of the layer.Said inner face comprises a coating, with the RFID tag being encapsulated between the inner face and the coating.