Hot Pressed Shoe Upper Films Replace Stitching
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Solution Overview
Problem
The construction of shoe uppers requires significant manual labor due to the need for stitching different materials, which is time-consuming and costly, despite the automation of sole production.
Innovation Solution
A method involving preparing and attaching two films to a base, cutting and removing excess film portions, and hot pressing them to form a stacked array, eliminating the need for stitching and reducing manual labor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If stitching is used to attach different materials of the upper, then the materials can be securely connected, but the process requires significant manual labor and is time-consuming
Solution Approach 1:
The patent replaces the mechanical stitching system with a thermal bonding system. Films with adhesive layers are hot-pressed onto the shoe upper and onto each other, eliminating the need for needles, threads, and manual stitching operations. This substitution maintains connection strength while dramatically improving productivity by enabling automated processing.
Solution Approach 2:
The patent changes the bonding mechanism from mechanical (stitching) to thermal (hot pressing). By controlling temperature, pressure, and time parameters during the hot-pressing process, the adhesive films achieve secure bonding equivalent to stitching. This parameter change enables automated manufacturing while maintaining connection strength.
2Manufacturing precision
If manual stitching is used for upper construction, then precise material attachment can be achieved, but labor costs increase significantly
Solution Approach 1:
The patent replaces manual stitching with automated hot-pressing machinery. The adhesive films are precisely applied and bonded through controlled thermal and pressure application, achieving attachment precision comparable to manual stitching while eliminating skilled labor requirements and reducing manufacturing costs.
Solution Approach 2:
The adhesive films perform the bonding function automatically through the hot-pressing process. The materials self-align and bond under heat and pressure without requiring manual positioning or stitching operations, reducing both labor costs and manufacturing complexity while maintaining precision.
3Stability of the object's composition
If traditional stitching methods are used, then material layers can be joined, but the process complexity and time consumption increase
Solution Approach 1:
The patent replaces the complex multi-step stitching process with a single hot-pressing operation. Adhesive films are applied and bonded in one continuous process using thermal and pressure application, simplifying the overall manufacturing process while maintaining stable material layer bonding. This eliminates the need for multiple stitching passes and reduces process complexity.
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 accurate, convenient, and cost-effective production of decorating accessories by connecting films through hot pressing instead of stitching, reducing labor costs and improving efficiency.
Implementation Method 1
a hot press apparatus (80) for heating and pressing the stacked array
Implementation Method 2
comprises a heating element (81) positioned below the stacked array
Implementation Method 3
a pressing element (82) positioned above the stacked array
Data Source
AI summary
A method for manufacturing a decorating accessory includes the steps of: (a) preparing a base, a first film and a second film; (b) attaching the first film to the base; (c) cutting the first film; (d) removing a remaining portion of the first film; (e) attaching the second film to the first film; (f) cutting the second film; (g) removing a remaining portion of the second film to form a stacked array; (h) hot pressing the stacked array to get a finished decorating accessory; (i) collecting the finished decorating accessory.