Silicone Pressure-Sensitive Adhesive for Tire Sensor Support
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Solution Overview
Problem
Existing methods for fixing sensor supports in tires, such as internal tire pressure sensors, are restrictive and risky due to the need for intensive cleaning and heating, which can degrade tire behavior characteristics.
Innovation Solution
A method using a pressure-sensitive adhesive with a silicone base, applied between 0.05 MPa and 1 MPa for less than 1 minute at ambient temperature, without heating, to securely attach the sensor support to the tire, potentially aided by a tool for pressure application and positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If adhesive is applied with heating to ensure strong adhesion, then bond strength is improved, but tire handling characteristics are degraded
Solution Approach 1:
The patent changes the temperature parameter from high (heating) to low (ambient temperature) while compensating by optimizing pressure parameters and adhesive composition to maintain bond strength without compromising tire handling characteristics
Solution Approach 2:
The patent replaces thermal energy input (heating) with mechanical energy input (pressure application) to achieve adhesive bonding, thereby avoiding thermal degradation of the tire while maintaining strong adhesion
2Strength
If intensive cleaning and abrasion are performed on the tire inner portion, then adhesion is improved, but tire structure is damaged
Solution Approach 1:
The patent extracts the abrasion step from the adhesive preparation process, eliminating the harmful mechanical action on the tire surface while maintaining adhesion quality through alternative surface preparation methods
Solution Approach 2:
The patent uses a disposable adhesive layer that provides sufficient bonding without requiring intensive surface preparation, effectively replacing the need for aggressive cleaning and abrasion processes
3Strength
If adhesive thickness is increased to improve bonding, then adhesion is improved, but tire handling characteristics are degraded
Solution Approach 1:
The patent optimizes the adhesive thickness parameter to a specific range that provides sufficient bonding strength while minimizing the impact on tire handling characteristics, balancing adhesion requirements with tire performance
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 method provides a strong and efficient attachment with high pull-out force, exceeding 100 N, without the need for heat, ensuring reliable sensor support fixation while maintaining tire integrity.
Implementation Method 1
The sensor support has a lower surface provided with an adhesive suitable for attaching the sensor support to the tire, and wherein the adhesive is a pressure-sensitive adhesive with a silicone base
Data Source
Figure 1~2
AI summary
Method of fixing a sensor support in a tire in which a tire (1) is provided, a sensor support (12) is provided having a housing (13) in which a sensor is intended to be fixed and having a lower surface (14) provided with an adhesive (14a) suitable for bonding the sensor support to the tire, and in which the adhesive is a pressure-sensitive adhesive (PSA) with a silicone base, and the adhesive has a thickness of between 30 µm and 600 µm, the lower surface of the sensor support is applied to an inner portion of the tire with a pressure of between 0.05 MPa and 1 MPa for a period of less than 1 minute to fix said sensor support to the tire.