RFID Tag Tape Separation Sheet Width Design
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Solution Overview
Problem
The existing methods for manufacturing rolls of tape with RFID tags face issues with wrong adhesion due to protrusion of the adhesive layer, leading to feeding difficulties and increased complexity in the manufacturing process, as the adhesive layer can protrude and stick to adjacent layers or the roll's side walls, causing adhesion errors and making it hard to feed the tape out smoothly.
Innovation Solution
The solution involves designing a tape structure where the separation sheet's width is made larger than the adhesive and base film widths, ensuring that even if the adhesive layer protrudes, the separation sheet can interpose between layers, preventing wrong adhesion and ensuring smooth feeding by maintaining the adhesive layer's width smaller than the separation sheet's, thus preventing adhesion to the roll's side walls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the adhesive layer is made relatively thick to dispose the RFID circuit element, then the RFID circuit element can be properly mounted, but the adhesive protrudes outward from the end portions of the tape in the widthwise direction causing wrong adhesion
Solution Approach 1:
A separation sheet is introduced as an intermediary layer between the adhesive layer and adjacent tape layers. The separation sheet prevents direct contact between protruding adhesive layers of adjacent layers, thereby eliminating wrong adhesion while allowing the adhesive layer to maintain its necessary thickness for RFID circuit element mounting.
Solution Approach 2:
The tape structure is segmented into distinct functional layers: the adhesive layer for mounting the RFID circuit element, and a separate separation sheet layer that specifically addresses the protrusion issue. This segmentation allows each layer to perform its designated function independently without interfering with adjacent layers.
2Ease of operation
If the separation material is bonded to the tag tape side with the adhesive layer, then the tag tape can be easily separated and affixed, but center position displacement occurs between the tag tape and separation material causing adhesive protrusion to stick to adjacent layers
Solution Approach 1:
The separation sheet serves as a mediator that compensates for center position displacement. Even when the separation material and tag tape are not perfectly aligned during manufacturing, the separation sheet extends beyond the adhesive layer boundaries to ensure complete coverage and prevent wrong adhesion between adjacent layers.
Solution Approach 2:
The separation sheet is designed with asymmetric dimensions relative to other layers, specifically with a width that is larger than the adhesive layer. This asymmetric design ensures that the separation sheet always covers the adhesive layer completely, regardless of center position displacement, thereby preventing adhesive protrusion from sticking to adjacent layers.
3Strength
If the adhesive protrudes from the end portion of the tape in the widthwise direction, then the RFID circuit element can be mounted, but the protruding portion contacts and sticks to the side wall surface of the roll disposal portion
Solution Approach 1:
The separation sheet acts as a barrier between the protruding adhesive and the side wall surface of the roll disposal portion. By placing the separation sheet between these two elements, wrong adhesion between the adhesive and side wall is prevented, while the adhesive maintains its necessary protrusion for proper RFID circuit element mounting.
4Reliability
If the separation sheet width is made larger than the adhesive layers, then wrong adhesion is prevented, but the overall tape width increases
Solution Approach 1:
The separation sheet is designed with local quality differentiation: its width is larger than the adhesive layer only in the regions where wrong adhesion prevention is needed (at the edges), while maintaining appropriate dimensions elsewhere. This ensures wrong adhesion prevention without excessive increase in overall tape width.
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
This design effectively prevents wrong adhesion between layers and with the roll's side walls, ensuring the RFID tag tape can be fed out smoothly and reducing manufacturing complexity by ensuring the separation sheet's width is sufficient to cover protruding adhesive, maintaining the tape's integrity and usability.
Implementation Method 1
a RFID (Radio Frequency Identification) System for reading/writing information contactlessly between a small-sized tag provided with a RFID circuit element and a reader (reading device)/writer (writing device)
Implementation Method 2
an adhesive layer for mounting, a RFID circuit element, and an adhesive layer for affixing in this order from one side
Data Source
AI summary
A first roll is provided, which is formed by winding a base tape having a tape-state base film in which a plurality of RFID circuit elements are disposed with a predetermined interval in the lengthwise direction, an adhesive layer with a predetermined width for affixing the RFID circuit element to a target to be affixed, disposed on one face of the base film, and a separation sheet with a width larger than that of the adhesive layer and disposed so as to extend in the lengthwise direction of the adhesive layer around a reel axis approximately perpendicular to the lengthwise direction.