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The manufacturing method of viscose filament is an important raw material for chemical production, widely used in fields such as textiles, clothing, and non-woven fabrics. With the continuous development of technology, the manufacturing methods of viscose filament are also constantly improved and optimized. This article will introduce a common manufacturing method for viscose filament

2、 Raw material preparation: The manufacturing of viscose filament requires the preparation of the following raw materials: pulp, caustic soda, carbon disulfide, sulfuric acid, zinc salt, etc. Among them, pulp is the main raw material, generally using wood pulp, cotton short fiber pulp, etc

3、 Preparation of adhesive 

1 Preparation of alkali cellulose: Mix pulp with caustic soda solution and immerse it at a certain temperature to make it alkali cellulose

2. Yellowing: Mix alkaline cellulose with carbon disulfide and undergo yellowing reaction at a certain temperature to produce cellulose xanthate

3. Dissolution: Mix cellulose xanthate with dilute sulfuric acid to dissolve it into a viscous solution

4、 Spinning of viscose filament 

1 Filtering: Filter the adhesive solution to remove impurities

2. Defoaming: Vacuum defoaming of adhesive solution to reduce bubbles in the solution

3. Spinning: Spray the adhesive solution through the spinneret to form fine threads

4. Solidification: Immerse the filament into a coagulation bath to solidify it into fibers

5. Stretching: Stretching the solidified fibers to increase their length and fineness

6. Water washing: Wash the stretched fibers with water to remove any residue on their surface

7. Drying: Dry the washed fibers to obtain viscose filaments

5、 Quality control 

In the manufacturing process of adhesive filament, it is necessary to strictly control the quality of each link to ensure that the final product quality meets the requirements. It is necessary to monitor and adjust parameters such as the quality of raw materials, viscosity of adhesive, temperature during spinning, and draft ratio

6、 Environmental protection and sustainable development 

The manufacturing process of viscose filament produces certain waste gases and wastewater, which require effective treatment and recycling to reduce the impact on the environment. At the same time, it is also necessary to pay attention to the sustainable utilization of resources and the reduction and resource utilization of waste, in order to promote the green development of viscose filament manufacturing

7、 Conclusion: The manufacturing method of viscose filament involves multiple stages and control of process parameters, requiring strict quality control and environmental protection measures. With the continuous progress and application of technology, the manufacturing methods of viscose filament will be continuously optimized and improved, improving production efficiency and quality level, while also better meeting the requirements of environmental protection and sustainable development.