Thermoplastic Tire Frame Adhesion via Container Heating
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Solution Overview
Problem
The high manufacturing cost of tires using thermoplastic materials for the tire frame member due to the necessity of large-scale and expensive vulcanizing machines and various molds corresponding to tire sizes in conventional methods.
Innovation Solution
A tire manufacturing method that uses thermoplastic materials for the tire frame member, where unvulcanized rubber is disposed between the tread rubber and the vulcanized rubber layer, and the assembly is heated and pressurized within a container to adhere the tread rubber to the tire frame member without requiring a vulcanizing mold, utilizing concavo-convex portions for enhanced mechanical bonding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a vulcanizing mold is used to integrate the tire frame member and tread rubber, then the adhesion strength is improved, but the manufacturing cost increases due to expensive vulcanizing machines and molds
Solution Approach 1:
The patent extracts the essential function of vulcanization (thermal bonding) from the complex vulcanizing mold system and implements it through a simplified container-based heating method. The tread rubber is bonded to the tire frame member by heating within a container without requiring traditional vulcanizing molds, thereby reducing equipment costs while maintaining adhesion strength.
Solution Approach 2:
The patent replaces expensive, durable vulcanizing molds with a simple, inexpensive container that can be reused. The container serves the essential function of confining and heating the tire components during bonding, but at a fraction of the cost of traditional vulcanizing mold systems.
2Stability of the object's composition
If conventional vulcanization method is used, then the tire structure is stabilized, but the device complexity increases due to large-scale vulcanizing machines
Solution Approach 1:
The patent extracts the core function of structure stabilization (thermal curing) from the complex vulcanizing machine system and achieves it through simple container-based heating. The tire components are cured and stabilized by heating within a container, eliminating the need for large-scale vulcanizing equipment while maintaining structural integrity.
Solution Approach 2:
The patent replaces the mechanical complexity of vulcanizing machines with a simpler thermal processing system. Instead of using complex mechanical vulcanizing equipment, the invention uses controlled heating within a container to achieve the same structural stabilization effect.
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 reduces the manufacturing cost of tires by eliminating the need for expensive vulcanizing machines and molds, while improving the adhesion and joint strength of the tread rubber to the tire frame member through mechanical bonding and controlled vulcanization.
Implementation Method 1
performing heating inside the container to thereby adhere the tread rubber to the tire frame member
Data Source
Figure 1
Figure 2(A)~2(D)
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AI summary
To reduce the manufacturing cost of a tire that uses a thermoplastic material for a tire frame member. A tire manufacturing method includes: using a thermoplastic material to form a tire frame member (12); disposing cushion rubber (14) (unvulcanized rubber) on an outer peripheral surface of the tire frame member (12); further disposing vulcanized or semi-vulcanized tread rubber (16) on a tire diameter direction outer side of the cushion rubber (14); covering the tread rubber (16), the cushion rubber (14), and at least the tread rubber (16) side of the tire frame member (12) in an envelope, so as to push the tread rubber (16) against the tire frame member (12) side, to configure a provisionally assembled article; and accommodating the provisionally assembled article inside a container and heating the inside of the container to perform vulcanization to thereby adhere the tread rubber (16) to the tire frame member (12).