Agricultural Tire Tread Mating Using Dinitrile Oxide Cure System
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Solution Overview
Problem
The existing methods for manufacturing agricultural tires are inefficient due to the limited shelf life and high production costs associated with sulfur-based cushion gum, which requires high heat for curing and is often produced separately from the tire manufacturing facility.
Innovation Solution
The use of a cushion gum with a stable dinitrile oxide compound allows for the mating of lugs to a cured rubber component at ambient temperatures, eliminating the need for high heat and enabling efficient lug application and tire formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If sulfur-based cushion gum is used for mating lugs to cured rubber component, then the cushion gum provides adequate bonding strength, but the shelf life is limited and production costs are high due to requiring high heat for curing
Solution Approach 1:
The patent changes the chemical parameters of the cushion gum composition by incorporating specific additives and compounds that enable low-temperature curing. This allows the cushion gum to maintain bonding strength while being curable at ambient temperatures, thereby extending shelf life without sacrificing adhesion performance.
2Strength
If sulfur-based cushion gum is used for mating lugs to cured rubber component, then the cushion gum provides adequate bonding strength, but the production costs are high due to requiring high heat for curing
Solution Approach 1:
The patent modifies the curing temperature parameter from high heat to ambient temperature by using alternative curing systems. This eliminates the need for expensive curing equipment and energy consumption, significantly reducing production costs while maintaining bonding strength through optimized composition formulation.
3Adaptability or versatility
If sulfur-based cushion gum is used, then the cushion gum can be produced at a facility distinct from the tire manufacturing facility, but the shelf life is much shorter than the lug shelf life
Solution Approach 1:
The patent enables the cushion gum to be manufactured in advance with extended shelf life by using stable composition formulations that do not require high heat curing. This allows preliminary production at separate facilities while maintaining usability for extended periods, resolving the conflict between production flexibility and shelf life limitations.
4Reliability
If high heat is applied to cure the cushion gum to the lug and cured rubber component, then the cushion gum cures effectively, but the production efficiency is reduced and costs increase
Solution Approach 1:
The patent changes the curing temperature parameter from high heat to ambient temperature, enabling rapid curing without energy-intensive equipment. This improves production efficiency by eliminating heating cycles while maintaining curing effectiveness through optimized chemical composition and curing agents.
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 production costs and improves efficiency by allowing the use of ambient temperature curing, extending the shelf life of the cushion gum, and enabling on-site production of agricultural tires, thus enhancing the retreading process.
Implementation Method 1
The uncured retread tire is then subjected to both heat and pressure in order to cure the cushion gum to the lug and the cured rubber component... the cushion gum contains a cure system comprising a stable dinitrile oxide compound... allowing the use of ambient temperature curing
Data Source
AI summary
A method of manufacturing a tread for agricultural tires, the method comprising providing an agricultural tire casing, providing a cured rubber component having first and second planar surfaces, providing a plurality of cushion gums, wherein the plurality of cushion gums contains a cure system comprising a stable dinitrile oxide compound, providing a plurality of lugs, and forming an agricultural tread composite by mating the lugs to a planar surface of the cured rubber component using the cushion gum.