Solid Tire RFID Embedding for Wear-Resistant Traceability
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Solution Overview
Problem
Existing solid tires for industrial vehicles lack efficient means for quality control and history management, and RFID tags are not adequately protected during use, leading to potential damage and reduced reading accuracy.
Innovation Solution
Embedding an RFID tag in the base rubber layer of the solid tire with a hardness of 80 or higher, positioning it near the side surface and coating it with materials like polyphenylene sulfide resin or ceramic for protection, and integrating short fibers to enhance durability and adhesion, while ensuring accurate reading by precise placement during manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an RFID tag is embedded in the base rubber layer for product identification, then quality control and history management can be performed, but the RFID tag may be damaged by rim slippage and wear during use
Solution Approach 1:
The RFID tag is embedded in the base rubber layer during the tire manufacturing process before the tire is put into service. This preliminary action ensures the tag is protected by the rubber matrix from the start, preventing damage from rim slippage and wear during actual use
Solution Approach 2:
The RFID tag is nested within the base rubber layer structure. The tag is positioned at a specific depth (0.5mm to 10mm from the side surface) and surrounded by the rubber material, creating a protective enclosure that shields the tag from external harmful factors while maintaining RFID functionality
2Object-affected harmful factors
If the RFID tag is embedded deep in the base rubber layer for protection, then the tag is protected from damage, but reading accuracy may deteriorate
Solution Approach 1:
The optimal embedding depth parameter is determined to be 0.5mm to 10mm from the side surface of the base rubber layer. This parameter optimization balances two competing requirements: sufficient depth to protect the tag from rim slippage and wear, while maintaining shallow enough depth to ensure adequate RFID signal transmission and reading accuracy
3Object-affected harmful factors
If the base rubber layer hardness is increased to 80 or higher to protect the RFID tag, then the protection effect is enhanced, but the tire may become less comfortable and more prone to cracking
Solution Approach 1:
The base rubber layer is designed with high hardness (JIS-A 80 or higher) specifically in the region where the RFID tag is embedded to provide local protection. This localized high hardness ensures the tag is protected from rim slippage and wear, while the rest of the tire structure can maintain appropriate hardness for comfort and overall durability
Solution Approach 2:
The base rubber layer uses a composite material formulation that achieves JIS-A hardness of 80 or higher through specific compound composition. This high-hardness composite material provides the necessary protection for the embedded RFID tag while maintaining the structural integrity and functional performance of the tire
Data Source
AI summary
In a solid tire including a tread rubber layer on a road contact surface side and a base rubber layer on a rim side, the base rubber layer has JIS-A hardness of 80 or higher, and an RFID tag is embedded in the base rubber layer. When forming an unvulcanized tire by winding a rubber sheet into multiple layers, the RFID tag is inserted between layers of the rubber sheet in the middle of the winding into multiple layers, or the RFID tag and a coating layer are overlaid and attached on a side surface of the unvulcanized tire, and then the unvulcanized tire including the RFID tag is vulcanized in a mold.