Midsole UV Curing and Multi-Functional Primer Bonding
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Solution Overview
Problem
The conventional method for manufacturing shoes involves a complex and time-consuming midsole treatment process with multiple steps, leading to increased production costs and reduced productivity, and lacks an eco-friendly approach.
Innovation Solution
A method utilizing a multi-functional treatment process and a multi-functional adhesive primer that simplifies the midsole treatment by skipping the washing step, applying UV energy for adhesive-friendly properties, and using a specifically formulated primer to ensure stable adhesive strength, reducing the manufacturing process while enhancing eco-friendliness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple treatment steps (washing, drying, surface roughing, multiple primers) are performed to secure stable adhesive strength, then adhesion reliability is improved, but manufacturing complexity and production time increase
Solution Approach 1:
The patent combines multiple treatment functions (washing, surface roughing, and priming) into a single integrated treatment step using one primer that performs all these functions simultaneously, eliminating the need for separate washing and multiple priming steps while maintaining reliable adhesive strength
Solution Approach 2:
The primer used in the patent is designed as a multi-functional agent that simultaneously provides washing, surface modification, and adhesion promotion properties, allowing a single substance to replace multiple separate treatment agents and steps
2Reliability
If multiple treatment steps are performed to secure stable adhesive strength, then adhesion reliability is improved, but production time increases
Solution Approach 1:
By merging washing, surface roughing, and priming into a single treatment step, the patent dramatically reduces the number of sequential operations required, thereby shortening production time while maintaining adhesive reliability
Solution Approach 2:
The multi-functional primer is designed to perform surface preparation and adhesion promotion in one step, eliminating the need for preliminary washing and multiple priming operations, thus reducing overall process time
3Reliability
If multiple treatment steps and additional primers are used to secure stable adhesive strength, then adhesion reliability is improved, but manufacturing cost increases
Solution Approach 1:
The patent merges multiple treatment steps and multiple primers into a single treatment step using one multi-functional primer, reducing the consumption of materials, labor, and facility resources while maintaining adhesive strength, thereby lowering manufacturing costs
4Reliability
If conventional treatment process is used, then adhesive strength can be achieved, but environmental harm increases due to washing steps
Solution Approach 1:
The patent extracts and eliminates the washing step from the conventional treatment process, replacing it with a multi-functional primer that provides the necessary surface preparation without requiring harmful washing agents, thereby reducing environmental pollution
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 approach reduces labor and facility costs, enhances adhesion, and increases productivity by streamlining the process, achieving stable adhesive strength and an eco-friendly manufacturing method.
Implementation Method 1
performing a multi-functional treatment by irradiation of a defined amount of UV energy to provide adhesive-friendly properties
Implementation Method 2
irradiating UV radiation to the midsole coated with the multi-functional adhesive primer to perform a curing
Data Source
AI summary
The present invention relates to a method for manufacturing shoes that includes: (a) preparing a midsole material and performing a multi-functional treatment by irradiation of a defined amount of UV energy to provide adhesive-friendly properties; (b) molding the midsole material from the UV irradiation step to form a midsole having a defined shape; (c) preparing a multi-functional adhesive primer used to provide stable adhesive strength for the molded midsole and secure surface modification and adequate applicability of the midsole material; (d) applying the multi-functional adhesive primer to the molded midsole; (e) irradiating UV radiation to the midsole coated with the multi-functional adhesive primer to perform a curing; and (f) bonding an outsole, an upper, and other shoe parts to the midsole from the step (e) to complete a shoe.Unlike the conventional method for manufacturing shoes, the present invention enables to skip the steps of washing and using an additional primer for midsole to reduce the process, enhance the adhesion and increase productivity.