tire
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Solution Overview
Problem
Existing methods for adhering organic fibers with a resin material in tire reinforcing layers do not achieve sufficient adhesion, limiting the strength and durability of the tire.
Innovation Solution
A tire design featuring a reinforcing layer with a cord member made of nylon fibers and an adhesive layer formed from a resorcinol-formaldehyde resin-containing composition, coated with a resin material that does not include vulcanized rubber, to enhance adhesion and strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional adhesion methods (epoxy compound, isocyanate compound, or resorcinol-formaldehyde-latex resin) are used to adhere organic fibers with rubber, then adhesion between fiber and rubber can be achieved, but adhesion between organic fibers and resin material in reinforcing layers is insufficient
Solution Approach 1:
The patent introduces a specific adhesive composition (resorcinol-formaldehyde resin-containing composition) as an intermediary layer between the organic fiber cord member and the resin material coating. This adhesive layer mediates the bonding interface, enabling sufficient adhesion between the cord member and resin material, which conventional methods failed to achieve.
Solution Approach 2:
The patent changes the chemical composition parameters of the adhesive system by using a resorcinol-formaldehyde resin-containing composition with specific chemical characteristics. This parameter change in the adhesive chemistry enables the cord member and resin material to be sufficiently adhered, resolving the adhesion insufficiency problem.
2Strength
If a reinforcing layer with sufficient adhesion is created, then tire strength and durability are improved, but the complexity of the manufacturing process increases due to additional adhesive application steps
Solution Approach 1:
The patent combines the adhesive layer formation and resin material coating into an integrated reinforcing layer structure. The adhesive composition is applied to the cord member, and then the resin material is applied over it, creating a unified reinforcing layer that provides both adhesion and reinforcement functions, thereby improving tire strength and durability.
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 provides improved adhesion between the cord member and resin material, resulting in enhanced strength and durability of the tire reinforcing layer, improving cut resistance and riding comfort.
Implementation Method 1
an adhesive layer that is arranged on the cord member and formed from a resorcinol-formaldehyde resin-containing composition
Data Source
Figure 1A
Figure 1B
Figure 1C
AI summary
Provided is a tire including: a tire frame member that is made of a resin and that has bead portions and side portions continuously extending on a tire radial-direction outer side of the respective bead portions; and a reinforcing layer that contains organic fibers and a resin material coating the organic fibers, in which tire the organic fibers include: a cord member containing a nylon fiber material; and an adhesive layer that is arranged on the cord member and formed from a resorcinol-formaldehyde resin-containing composition.