Fabric Calendering with Deformable Contrast Cylinders for Permanent Shine
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Solution Overview
Problem
Conventional fabric calendering systems face limitations in achieving permanent stabilization and shiny appearance, with high chemical product usage, equipment wear, and increased costs, while traditional methods often damage the fabric structure and require complex maintenance.
Innovation Solution
The method employs contrast cylinders with elastically deformable surfaces for intense squeezing and controlled thermal action, eliminating the need for a water-repellent belt, allowing for higher mechanical constraint and reduced chemical product usage, achieving permanent structural and visual stabilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If conventional calendering systems (shoe, roll, or belt) are used to reduce fabric thickness and create shiny appearance, then the fabric thickness is reduced and surface shininess is achieved, but the shiny appearance is temporary and unstable, requiring chemical products for permanent stabilization
Solution Approach 1:
The invention changes the physical-chemical parameters of the fabric by subjecting it to controlled moisture, heat, and mechanical pressure in a specific sequence. The fabric is moistened, then pressed between heated cylinders at controlled temperatures (100-200°C) and pressures (1-5 kg/cm²), creating permanent molecular rearrangement that stabilizes the shiny appearance without chemical agents
Solution Approach 2:
The invention utilizes phase transition of water (liquid to vapor) during the calendering process. Moisture applied to the fabric evaporates under the heat and pressure between the cylinders, creating steam that penetrates the fabric structure and facilitates permanent setting of the calendered effect, eliminating the need for chemical stabilization products
2Stability of the object's composition
If chemical products are used during belt calendering to achieve permanent shiny appearance, then the shiny appearance becomes permanent, but equipment wear increases and operational costs increase
Solution Approach 1:
The invention employs a self-service approach where the fabric itself, through controlled application of moisture and heat, creates the conditions for permanent stabilization. The water applied to the fabric serves as both the moisture source and the heat transfer medium, eliminating the need for external chemical agents that would require complex removal or stabilization systems
Solution Approach 2:
The invention replaces the chemical system with a physical system based on controlled moisture and heat application. Instead of using chemical products that require sophisticated delivery, monitoring, and removal systems, the process uses simple mechanical application of water and thermal energy, significantly simplifying equipment design and maintenance
3Stress or pressure
If high pressure is applied in roll calendering to concentrate pressure in little space, then the thickness reduction effect is enhanced, but fabric stretching and structural damage occur
Solution Approach 1:
The invention introduces dynamic elements to the calendering process by using cylinders with independently adjustable pressures and temperatures, and by controlling the moisture content of the fabric before pressing. This dynamic control allows optimization of pressure distribution to achieve thickness reduction without excessive concentration that would cause fabric damage
Solution Approach 2:
The invention applies moisture to the fabric before the pressing operation, which acts as a cushioning agent. This preliminary moistening prevents direct excessive mechanical stress on the fabric fibers during pressing, reducing the risk of stretching and structural damage while still achieving the desired thickness reduction
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 results in a higher rate of continuous, permanent stabilization and shininess with reduced chemical consumption and lower operational costs, using robust and durable components, suitable for various fiber types.
Implementation Method 1
cylinders with elastically deformable surfaces for intense squeezing
Implementation Method 2
administration of thermal energy
Implementation Method 3
the moisture present or induced on the fabric, exposed in a hot and closed environment (i.e., the space between the cylinder and the belt) causes formation of steam
Data Source
Figure 1~3
Figure 4
Figure 5
AI summary
An apparatus for continuous calendering of fabrics comprises a first operating unit (20) with devices for surface moistening (27) of the fabric (3) and/or means for impregnation (28) of the fabric (3) with treatment liquids, and with cylinders (23, 24) for exerting on the fabric (3) a mechanical action of lateral pressing, and at least one second operating unit (30, 30a) for subjecting the fabric (3) to a condition of intense lateral pressing without the aid of a water-repellent belt.