Tire Metal-Resin Cord Structure for Adhesion Durability
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Solution Overview
Problem
The existing methods for improving adhesion durability between a tire frame and a metal cord in tires, which use a resin layer and an adhesive layer, are limited by the selection of materials and do not achieve optimal adhesion at the interface between the adhesive and resin layers.
Innovation Solution
A metal-resin composite member is developed, comprising multiple metal cords with an adhesive layer and a resin layer, where the adhesive layer is integrally disposed on all metal cords, and the cross-sectional shape of the metal cords and adhesive layer has a narrower region between the cords, enhancing adhesion durability without using vulcanized rubber.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a resin layer and adhesive layer are used to improve adhesion durability between metal cord and tire frame, then adhesion durability is improved, but material selection is limited and adhesion at the adhesive-resin interface is not optimal
Solution Approach 1:
The invention changes the geometric parameter of the adhesive layer by creating an indented portion that reduces the width between metal cords. This parameter change optimizes the adhesive-resin interface geometry, improving adhesion durability without limiting material selection, as the solution works with various adhesive and resin material combinations
Solution Approach 2:
The invention creates a composite structure where the adhesive layer forms a narrow region between metal cords, combining the adhesive material with the resin layer to form an optimized composite interface. This composite structure improves adhesion durability while maintaining flexibility in material selection
Data Source
Figure 1(A)~2
AI summary
A metal-resin composite member for a tire, comprising plural metal cords that are positioned alongside each other, an adhesive layer that is disposed on the metal cords, and a resin layer that is disposed on the adhesive layer, the metal-resin composite member satisfying at least one of the following (1) or (2): (1) the adhesive layer is independently disposed on each of the plural metal cords, and at least one of the adhesive layers has a cross-sectional shape that has a projecting portion; (2) the adhesive layer is integrally disposed on all of the plural metal cords, and a region consisting of the metal cords and the adhesive layer has a cross-sectional shape that has, between the metal cords, a portion that is narrower in width than a portion at which the metal cords are disposed.