RFID-Tag Coating Rubber Composition for Tire Molding Workability
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Solution Overview
Problem
Conventional RFID-tag coating rubber compositions exhibit poor workability during mixing and kneading processes, leading to insufficient tackiness and poor performance in tire molding, which affects productivity.
Innovation Solution
An RFID-tag coating rubber composition comprising a rubber component, oil, and a tackifier, with specific ranges of oil and tackifier content, where the oil is preferably naphthenic oil containing asphalt and the tackifier is selected from rosin resin, terpene resin, petroleum resin, phenolic resin, coal-derived resin, or xylene resin, improving doughy consistency and tackiness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional RFID-tag coating rubber composition is used, then the composition can be applied to RFID tags, but the workability during mixing and kneading process is poor
Solution Approach 1:
The patent modifies the chemical composition parameters of the coating rubber by incorporating specific oils (2-20 parts by mass) and tackifiers (2-10 parts by mass) relative to rubber component. This parameter adjustment transforms the physical properties of the composition, improving doughy consistency and workability during mixing while maintaining adequate tackiness through controlled composition ratios.
Solution Approach 2:
The patent creates a composite coating rubber material by combining rubber component, oil, and tackifier in specific proportions. This composite formulation integrates the processing advantages of oil (improved workability) with the adhesive properties of tackifier (maintained tackiness), resolving the contradiction between ease of manufacture and reliability.
2Productivity
If conventional RFID-tag coating rubber composition is used, then the composition can be applied to RFID tags, but the workability in subsequent molding process is poor
Solution Approach 1:
The patent adjusts composition parameters to achieve optimal balance between molding workability and adhesiveness. By controlling oil content (2-20 parts) and tackifier content (2-10 parts) relative to rubber component (100 parts), the composition achieves improved doughy consistency for molding while maintaining sufficient adhesive properties through the synergistic effect of the composite formulation.
3Ease of manufacture
If oil content is increased to improve workability, then mixing and kneading becomes easier, but tackiness may be reduced
Solution Approach 1:
The patent optimizes the parameter range of oil content to 2-20 parts by mass (preferably 2-15 parts) relative to 100 parts of rubber component. This controlled parameter adjustment ensures sufficient doughy consistency improvement for workability while preventing excessive oil content that would compromise tackiness, achieving optimal balance through precise parameter specification.
Solution Approach 2:
The patent introduces tackifier as an intermediary substance that mediates between the lubricating effect of oil (improving workability) and the adhesive requirement (maintaining tackiness). The tackifier compensates for any tackiness reduction caused by oil addition, allowing higher oil content for better workability while maintaining reliable adhesive properties.
Data Source
AI summary
An RFID-tag coating rubber composition, comprises: a rubber component; an oil; and a tackifier. The RFID-tag coating rubber composition is excellent in both workability in a mixing and kneading process thereof and workability in a subsequent molding process of a tire.