In fabric production, sizing is used to increase the durability of yarns during the weaving phase and to ensure their workability. Cotton, viscose and modal fabrics are processed with various types of sizing due to their different fiber structures and chemical properties. The use of size test kits can facilitate the effective removal of these sizes by ensuring that the types of sizes are correctly identified.

Sizes Used in Cotton, Viscose and Modal Fabrics

1. Sizers Used in Cotton Fabrics

• Starch-Based Sizers: Natural starch and modified starch, which are widely used in cotton yarns, increase the durability of the yarns during weaving.

• PVA (Polyvinyl Alcohol): This substance, which is also used in cotton yarns, is a water-soluble sizer with good adhesion properties.

• Sodium Carboxymethyl Cellulose (CMC): It is an environmentally friendly sizer that can be used in cotton yarns.

2. Sizes Used in Viscose Fabrics

• Starch Based Sizes: Used in viscose yarns along with starch, hemchelose and cellulose based sizes.

• PVA (Polyvinyl Alcohol): An effective sizing agent in viscose yarns and increases the durability of the yarns during weaving.

• Sodium Carboxymethyl Cellulose (CMC): A suitable sizing agent for viscose yarns.

3. Sizes Used in Modal Fabrics

• Starch Based Sizes: Starch in modal yarns increases the workability of the yarns.

• PVA (Polyvinyl Alcohol): It is an effective sizing agent in modal yarns.

• Sodium Carboxymethyl Cellulose (CMC): It can be used in modal yarns.

Importance of the Size Test Kit

Size Test Kit (Starch/PVA/PVAc/CMC/Acrylate) is a special test kit used to determine different sizes.  This kit is used to determine the size types used in the production process accurately. provides the determination. In this context, the advantages of using a size test kit are as follows:

• Accurate Size Detection: The size test kit determines whether sizes such as starch, PVA, PVAc, CMC and acrylate are present on the fabric. This determination allows the selection of appropriate size removal methods.

• Facilitation of Size Removal Processes: Determining size types with the test kit enables the application of specific size removal methods. This both shortens the process time and ensures complete removal of the size.

• Production Efficiency: Correct size determination and application of appropriate removal methods make the fabric suitable for subsequent processes and increase production efficiency.

Sizing Removal Processes

1. Removal of Starch-Based Sizes

• Hot Water Removal of Sizes: Starch-based sizes are dissolved with hot water. Cotton, viscose and modal fabrics are soaked in hot water to dissolve the starch and remove it from the fabric.

• Enzymatic De-Sizing: Amylase enzymes break down the starch and make it soluble. The fabric, which is soaked in the enzyme solution, is then rinsed.

2. De-Sizing of PVA-Based Sizes

• De-Sizing with Hot Water: PVA can be de-sized with hot water. Cotton, viscose and modal fabrics are soaked in hot water to dissolve PVA and remove it from the fabric.

• Chemical Descaling: Chemical solvents such as alkaline solutions can be used to dissolve PVA.

3. Descaling of CMC-Based Sizes

• Hot Water Descaling: CMC can be descaled with water. High temperature and pH control with CMC is dissolved and removed from the fabrics.

• Chemical Extraction: Chemical solvents can also be used to dissolve CMC, but hot water is usually sufficient.

4. Removal of Acrylate-Based Sizes

• Chemical Extraction: Acrylate-based sizes are usually removed using special chemical solvents. This increases the solubility of the acrylate and ensures its effective removal from fabrics.

Test KiSize Strategies Based on Size Usage

The size test kit optimizes the size processes by determining the size types. The following strategies are recommended based on the use of the test kit:

1. Determine Size Type: Determine the size type used on the fabric with the test kit. This will allow you to decide which desizing methods to apply.

2. Selecting the Appropriate Desizing Method: The appropriate desizing method (hot water, enzymatic, chemical) should be selected according to the test results.

3. Monitoring the Process: Monitor the desizing process and recheck with the test kit when necessary. This will help ensure that the size is completely removed.

Results

Sizes used in the production of cotton, viscose and modal fabrics are critical to improving the performance and workability of the fabrics. Size test kits can make desizing processes more effective and efficient by accurately identifying the types of sizes. Using a test kit can increase the accuracy and efficiency of desizing processes, improving the quality and efficiency of the fabric manufacturing process.