Textile Fabric Sheet Coating for Stain and Liquid Resistance
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Solution Overview
Problem
Textile fabrics for interior use face challenges in stain and liquid resistance due to their open construction, leading to difficulty in cleaning and maintaining aesthetics, especially when exposed to common stains and spills, which often seep through and cause unsanitary conditions in public places.
Innovation Solution
A textile fabric sheet is developed with a polyurethane skin layer and a stain-resistant coating layer, providing a solid base for effective liquid barrier and wear resistance, while maintaining a true textile feel, by sequentially forming a polyurethane coating layer and a stain-resistant coating layer on the fabric substrate, which includes pre-treatment with water or oil repellents for enhanced performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a simple stain resistant coating is applied on the surface of textile fabric, then the application process is simple, but the stain resistance effect is limited due to open constructional characteristic
Solution Approach 1:
The coating system is segmented into multiple functional layers: a polyurethane base layer providing liquid barrier and wear resistance, and a stain-resistant coating layer providing chemical stain resistance. This segmentation allows each layer to specialize in specific functions, resolving the contradiction between simple application and effective stain resistance.
Solution Approach 2:
The invention uses composite material structure combining polyurethane resin with stain-resistant coating materials. This composite approach creates a multi-functional surface that simultaneously provides liquid barrier properties, wear resistance, and stain resistance, overcoming the limitations of single-coating solutions.
2Reliability
If conventional stain resistant coating is applied on textile fabric, then the coating can be applied, but liquid stains seep through the open texture into the bottom cushion causing unsanitary environment
Solution Approach 1:
A flexible polyurethane skin layer is formed on the fabric surface, creating a continuous liquid barrier film that prevents liquid permeation while maintaining the textile's flexibility and drape. This thin film approach blocks liquid stains from reaching the bottom cushion without sacrificing the fabric's essential characteristics.
3Reliability
If multiple coating layers are formed to achieve excellent stain and liquid resistance, then the protective performance is improved, but the manufacturing process becomes more complex
Solution Approach 1:
The invention merges multiple functions into a coordinated multi-layer coating system where the polyurethane layer provides liquid barrier and wear resistance while the stain-resistant layer provides chemical resistance. This functional merging allows each layer to be optimized for its specific purpose while working together to achieve comprehensive protection.
Solution Approach 2:
The polyurethane base layer is applied and cured first to establish the liquid barrier and wear-resistant foundation. Subsequently, the stain-resistant coating is applied on top. This preliminary action sequence ensures proper adhesion and functional differentiation, managing process complexity through systematic layer-by-layer construction.
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
The solution achieves excellent stain, liquid, and wear resistance, allowing for easy removal of stains and preventing liquid permeation, thus eliminating the need for a separate moisture barrier, while maintaining the fabric's texture and aesthetic appeal, and is more economical compared to conventional stain-resistant products.
Implementation Method 1
a polyurethane skin layer and a stain-resistant coating layer, providing a solid base for effective liquid barrier and wear resistance
Implementation Method 2
a stain-resistant coating layer formed on the polyurethane coating layer
Implementation Method 3
The fabric substrate may be pre-treated with a water repellent, an oil repellent, or both of them
Implementation Method 4
The fabric substrate may be pre-treated with a water repellent, an oil repellent, or both of them
Data Source
AI summary
Provided are a textile fabric sheet having stain and liquid resistance including a fabric sheet, a polyurethane coating layer formed on the fabric sheet and a stain-resistant coating layer formed on the polyurethane coating layer and a method of preparing the same. Thus, a texture characteristic of the fabric substrate itself can be exhibited, and due to the polyurethane coating layer and the stain-resistant coating layer stacked in two steps, excellent water resistance, stain resistance and air permeability can be exhibited.