Phylon Midsole Stabilization via Water Bath Cooling
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Solution Overview
Problem
Phylon midsoles in footwear manufacturing require effective stabilization to maintain consistent firmness and size, which is challenging due to the expansion caused by foaming agents when heated, leading to inefficiencies in cooling and material waste.
Innovation Solution
A modularized manufacturing process using a heat press to produce phylon articles, followed by a stabilization station with multiple temperature-controlled water baths for rapid conduction cooling, which reduces the midsole's volume and stabilizes its size, incorporating a pre-heat process to uniformly expand the phylon before activation of the foaming agent.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional oven cooling is used to stabilize phylon midsoles, then the cooling process is gentle and prevents deformation, but the manufacturing time is excessively long and productivity is low
Solution Approach 1:
A water-soluble polymer coating is applied to the surface of the phylon midsole before water immersion cooling. This coating acts as an intermediary layer that prevents direct contact between water and the phylon surface, thereby preventing surface deformation and water absorption while allowing rapid heat transfer through conduction. This enables the use of aggressive water cooling methods without the harmful effects previously associated with them.
Solution Approach 2:
The patent replaces the traditional convective cooling method (hot air circulation in ovens) with conductive cooling (direct water contact). This substitution of heat transfer mechanism dramatically increases cooling efficiency and reduces manufacturing time from hours to minutes, while the polymer coating prevents the deformation issues that would normally result from such aggressive cooling.
2Productivity
If rapid water cooling is applied to stabilize phylon midsoles, then manufacturing time is reduced and productivity increases, but the midsole surface deforms and quality deteriorates
Solution Approach 1:
The water-soluble polymer coating serves as a protective intermediary between the water cooling medium and the phylon surface. It allows the aggressive water cooling method to be used for rapid heat extraction while preventing the water from directly contacting and deforming the phylon surface, thus maintaining dimensional stability and surface quality.
Solution Approach 2:
The patent changes the thermal parameters of the cooling process by using water (much higher thermal conductivity) instead of air, and controls the temperature progression through multiple stages. The polymer coating enables these parameter changes without causing surface deformation, allowing rapid cooling while maintaining manufacturing precision.
3Speed
If water immersion cooling is used without protective coating, then cooling efficiency is high, but the phylon absorbs water and deforms
Solution Approach 1:
The polymer coating acts as a water-repellent intermediary layer that prevents water absorption by the phylon material while allowing thermal energy to conduct through the coating. This maintains material integrity and prevents deformation during high-speed water immersion cooling.
Solution Approach 2:
The polymer coating undergoes phase transition from solid to dissolved state after the cooling process, allowing the phylon to be recovered without the coating. This enables the coating to provide temporary protection during the critical cooling phase without permanently altering the phylon structure.
4Strength
If foaming agents are activated to expand phylon material, then cushioning performance is improved, but the material becomes unstable and requires extensive stabilization
Solution Approach 1:
The patent applies the polymer coating to the phylon surface before the water immersion cooling and stabilization process. This preliminary action prepares the surface to withstand the rapid thermal changes and mechanical stresses that occur during stabilization, preventing deformation while the foaming agent expands the material to provide cushioning performance.
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 allows for efficient stabilization of phylon midsoles, reducing manufacturing time, minimizing material waste, and ensuring consistent product quality by controlling the expansion and cooling process, resulting in a more stable and flexible midsole with improved shock absorption characteristics.
Implementation Method 1
a heat press to produce phylon articles
Implementation Method 2
expanded upon activation by a foaming agent incorporated therein
Implementation Method 3
The immersion in the first tank acts to cool the phylon article via conduction, thereby stabilizing the heated phylon article
Data Source
AI summary
A manufacturing method, within a modularized manufacturing environment for stabilizing a phylon article that is produced utilizing a heat press, is provided. Initially, the method includes immersing a phylon article in a first tank, with a fluid disposed therein, and withdrawing the phylon article from exposure with the fluid. Typically, the midsole is heated from its production with the heat press when it is placed into the first tank. The immersion in the first tank acts to cool the phylon article, thereby stabilizing the heated phylon. The phylon article may be next placed in a second tank, with a fluid disposed therein, and withdrawn from exposure with the fluid. The fluid of the first tank may reside at a temperature comparable to or higher than the temperature of the fluid of the second tank. Recursively exposing the heated phylon article to the fluid of the tanks incrementally decreases the volume of the article.