Tire Adhesive Layer Using Diene Elastomer TPE
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Solution Overview
Problem
Current Tyre Pressure Monitoring Systems face challenges in rapidly and durably attaching objects to tyre surfaces due to limitations in adhesive technologies.
Innovation Solution
A tyre with an adhesive layer based on a block thermoplastic elastomer (TPE) that cocrosslinks with the tyre's rubber during vulcanization, eliminating the need for fabric and enabling reversible attachment using a matching attachment layer, ensuring strong bonding without irreversible chemical crosslinking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a thermoplastic adhesive layer with fabric is used, then stable attachment during vulcanization is achieved, but the attachment process becomes complex and irreversible chemical crosslinking is required
Solution Approach 1:
The invention extracts and removes the fabric component from the adhesive layer structure. By using a thermoplastic adhesive layer without fabric, the patent simplifies the adhesive layer structure while maintaining attachment stability through reversible thermoplastic bonding during vulcanization, eliminating the need for irreversible chemical crosslinking.
Solution Approach 2:
The invention changes the fundamental parameter of the adhesive layer from a thermosetting chemical crosslinking system to a thermoplastic physical bonding system. This parameter change allows the adhesive to bond stably during vulcanization through thermoplastic properties and then become reversible by heating above the softening temperature, eliminating complexity associated with fabric reinforcement and irreversible crosslinking.
2Strength
If irreversible chemical crosslinking is used for attachment, then strong bonding is achieved, but the attachment becomes permanent and non-reversible
Solution Approach 1:
The invention utilizes phase transitions of the thermoplastic adhesive layer to achieve reversible attachment. The adhesive transitions from a solid state during vulcanization (providing strong bonding) to a softened state when heated above its softening temperature (allowing detachment). This phase transition mechanism enables both strong bonding strength and attachment reversibility without irreversible chemical crosslinking.
Solution Approach 2:
The invention introduces dynamic reversibility to the attachment system by using thermoplastic materials that can transition between bonded and detached states. The attachment strength is maintained during normal operation but can be dynamically reversed by applying heat, providing adaptability and versatility that irreversible chemical crosslinking cannot achieve.
3Reliability
If traditional adhesive methods are used, then attachment is achieved, but the process is time-consuming and not rapid
Solution Approach 1:
The invention merges the adhesive attachment process with the tyre vulcanization process. The thermoplastic adhesive layer is activated and bonds to the tyre surface during the existing vulcanization cycle, eliminating the need for separate adhesive application and curing steps. This integration achieves both durable attachment and rapid processing by combining two operations into one.
Solution Approach 2:
The adhesive layer is pre-applied to the tyre surface before vulcanization in a ready-to-receive state. The actual bonding action occurs automatically during vulcanization when the thermoplastic material softens and adheres to the tyre, eliminating post-vulcanization attachment steps and enabling rapid, durable attachment.
4Stability of the object's composition
If fabric is included in the adhesive layer, then stability during vulcanization is ensured, but environmental friendliness is reduced due to irreversible crosslinking
Solution Approach 1:
The invention extracts and removes the fabric component from the adhesive layer, creating a simpler, more environmentally friendly structure. The thermoplastic adhesive layer alone provides sufficient stability during vulcanization through physical bonding, eliminating the need for fabric reinforcement and irreversible chemical crosslinking agents that have negative environmental impacts.
Solution Approach 2:
The invention changes the bonding mechanism from irreversible chemical crosslinking to reversible thermoplastic bonding. This parameter change eliminates the need for harmful chemical crosslinking agents and fabric materials, reducing environmental impact while maintaining adhesive layer stability through the thermoplastic material's physical properties during vulcanization.
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
The solution allows for rapid, durable, and reversible attachment of members to the tyre surface, offering environmental friendliness and flexibility in geometry and function, while maintaining strong adhesion even after vulcanization.
Implementation Method 1
enabling cocrosslinking of the adhesive layer and the rubber material of the tyre's inner or outer surface during the vulcanization of the tyre by virtue of the presence of the double bonds present in the diene elastomers
Implementation Method 2
the reversible attachment of the member to the surface of the tyre is ensured by bringing the two layers, adhesive layer and attachment layer, into contact after softening thereof by heating
Data Source
AI summary
A tire comprises an inner surface and/or outer surface with an accommodating region, an adhesive layer arranged on said accommodating region and a protective film arranged on said adhesive layer, characterized in that said adhesive layer is based on a block thermoplastic elastomer (TPE) comprising an elastomer block based on a diene elastomer comprising a molar content (or content by weight) of unsaturations of greater than 10%.