Method for making burnout fabric
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Solution Overview
Problem
Burnout fabrics often suffer from insufficient transparency, unclear patterns, excessive patterns, imperfect patterns, and broken threads due to limitations in the existing burnout printing process.
Innovation Solution
A method involving pretreating a greige fabric with a burnout paste containing sulfuric acid, synthetic gum tragacanth, and sodium alginate, followed by a post-treatment process that includes stoving, steaming, and washing to produce a high-quality burnout fabric with clear outlines and desirable pattern effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional burnout printing process is used, then fabric treatment is achieved, but insufficient transparency of burnout portion occurs
Solution Approach 1:
The patent modifies the chemical composition parameters of the burnout paste by incorporating specific ratios of sulfuric acid (30-50 parts), synthetic gum tragacanth (40-60 parts), and sodium alginate (5-15 parts). This parameter optimization enables complete fiber dissolution while maintaining pattern definition, resolving the contradiction between achieving sufficient transparency and maintaining manufacturing precision.
2Shape
If conventional burnout printing process is used, then pattern is formed, but unclear outline of pattern occurs
Solution Approach 1:
The patent applies preliminary sizing treatment to the fabric before burnout printing, creating a protective layer that prevents chemical spread during the burnout process. This preliminary action ensures sharp pattern outlines and clear edges, directly addressing the issue of unclear pattern outlines while maintaining manufacturing precision.
3Quantity of substance
If conventional burnout printing process is used, then burnout effect is achieved, but excessive patterns or imperfect patterns occur
Solution Approach 1:
The patent implements a controlled burnout process with optimized paste composition that provides consistent chemical reaction outcomes. The balanced formulation of sulfuric acid with gum tragacanth and sodium alginate creates predictable fiber dissolution rates, preventing both excessive pattern formation and imperfect patterns, thereby achieving accurate pattern quantity and quality control.
4Reliability
If conventional burnout printing process is used, then fabric is treated, but broken threads occur
Solution Approach 1:
The patent applies preliminary sizing treatment that creates a protective cushioning layer on the fabric before burnout printing. This preliminary protection prevents mechanical stress and chemical damage to threads during the burnout process, eliminating broken threads while maintaining fabric integrity and thread strength.
5Manufacturing precision
If conventional burnout printing process is used, then burnout treatment is achieved, but hazardous chemicals and environmental damage occur
Solution Approach 1:
The patent employs biodegradable natural gums (synthetic gum tragacanth and sodium alginate) as thickening agents in the burnout paste instead of persistent synthetic chemicals. These natural materials decompose harmlessly after serving their thickening function, eliminating long-term environmental contamination while maintaining effective burnout quality.
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 method results in a burnout fabric with improved transparency, clear patterns, and no broken threads, offering a cost-effective and environmentally friendly process that enhances the overall quality and appearance of the fabric.
Implementation Method 1
a fabric composed of two or more fibers, such as cotton, viscose, hemp, silk, nylon, and polyester, undergoes corrosive chemicals applied on its surface, for example, sulfuric acid and AlCl3, and is dried and treated to dissolve particular fibers
Implementation Method 2
undergoes corrosive chemicals applied on its surface, for example, sulfuric acid and AlCl3, and is dried and treated to dissolve particular fibers
Implementation Method 3
the vacuum heat setting pot has a degree of vacuum of 1 to 2 atmospheres, a temperature of 90° C. to 100° C., and a twist stability rate of 60% to 80% for an inner layer and 75% to 85% for an outer layer
Implementation Method 4
the pretreatment includes stitching, washing with water, oxygen bleaching, and stoving the greige fabric for the first time
Implementation Method 5
the posttreatment includes stoving for the second time, steaming, washing, and drying. The steaming is performed at a temperature of 108 to 112° C. for 4 to 6 minutes
Implementation Method 6
the washing is performed at 45-50° C. for 13-17 minutes with an alkaline washing solution
Data Source
AI summary
A method for making a burnout fabric includes: (1) pre-treating a greige fabric; (2) processing the pre-treated greige fabric with a burnout paste containing sulfuric acid, synthetic gum tragacanth, and sodium alginate; and (3) post-treating the greige fabric after the burnout treatment to obtain a burnout fabric. The method according to the present invention is simple in process, low in cost, and easy to implement, and the burnout fabric obtained thereby has an attractive and clear pattern, featuring a three-dimensional effect and a high quality.