RFID Inlay Transfer Using Differential Release for Soft Substrates
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Solution Overview
Problem
Conventional methods struggle to securely attach RFID inlays to ultra-soft fabrics, very thin materials, and exotic materials, while also aiming to reduce manufacturing costs and promote sustainability.
Innovation Solution
A method involving the use of conductive adhesives and a reel-to-reel process to securely attach RFID inlays to a first substrate, followed by transferring them to a second substrate using a differential release mechanism, allowing for efficient creation and reuse of substrates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional attachment techniques are used, then the manufacturing process is simple, but the RFID inlay cannot be securely attached to ultra-soft fabrics, very thin materials, or exotic materials
Solution Approach 1:
The patent uses a transfer substrate as an intermediary carrier that temporarily holds the RFID inlay during manufacturing. The inlay is first attached to this transfer substrate using conventional techniques, then transferred to the final product substrate. This intermediary approach enables secure attachment to difficult materials (ultra-soft fabrics, thin materials, exotic materials) that cannot directly withstand conventional attachment methods, while maintaining compatibility across diverse material types.
2Adaptability or versatility
If a transfer process is implemented, then adaptability to unconventional materials is improved, but the device complexity increases
Solution Approach 1:
The patent performs preliminary attachment of the RFID inlay to a transfer substrate before final product assembly. By pre-attaching the inlay to a stable carrier substrate using conventional techniques, the complex transfer step is simplified to just picking up the pre-assembled unit and placing it on the final product. This preliminary action reduces the complexity of handling delicate inlays directly on unconventional materials.
Solution Approach 2:
The transfer substrate serves multiple functions: it acts as a temporary carrier during manufacturing, provides a stable surface for conventional attachment techniques, and enables the inlay to be transferred to various final substrates. This multi-functional approach consolidates several operations into one universal platform, reducing overall process complexity despite the added transfer step.
3Ease of manufacture
If substrates are reused, then manufacturing costs are reduced and sustainability is promoted, but the manufacturing process complexity increases
Solution Approach 1:
The patent implements a substrate recovery system where the transfer substrate is separated from the finished RFID product and reused for subsequent inlay attachments. The transfer substrate is discarded only after completing its transfer function, and recovered substrates are cleaned and reused multiple times. This recovery approach reduces manufacturing costs by eliminating continuous substrate consumption, while the modular recovery process adds manageable complexity rather than overwhelming complexity.
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 secure attachment of RFID inlays to unconventional materials while reducing manufacturing costs and promoting sustainability by reusing substrates, facilitating the production of RFID devices.
Implementation Method 1
securing an RFID inlay to a first substrate with a first adhesive
Implementation Method 2
securing the RFID inlay to a second substrate with a second adhesive
Data Source
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AI summary
Systems and methods are provided for transferring a remote frequency identification (RFID) inlay from a first substrate to a second substrate. An RFID inlay is secured to a first substrate with a first adhesive. The RFID inlay is brought into the vicinity of a second substrate and secured to the second substrate with a second adhesive. The RFID inlay is then dissociated from the first substrate. The RFID inlay may be dissociated from the first substrate by softening the first adhesive, such as by the application of heat or the application of a softening substance. Alternatively, the RFID inlay may be dissociated from the first substrate without softening the first adhesive, but rather by differential release, whereby a release force is applied between the two substrates, with the release force being greater than the release strength of the first adhesive, but less than the release strength of the second adhesive.