The production of viscose fibres at Kelheim Fibres GmbH

Introduction

This tutorial provides an overview of the production of viscose fibers, also known as rayon, as demonstrated by Kelheim Fibres GmbH. We will explore what viscose fibers are, their advantages, applications, and the manufacturing process. This information is valuable for anyone interested in textile production, sustainable materials, or the fashion industry.

Step 1: Understanding Viscose Fibers

• Definition: Viscose fibers are regenerated cellulose fibers derived from natural sources like wood pulp.
• Advantages:
  • Soft and breathable, making them comfortable for clothing.
  • Excellent dyeing properties, allowing for vibrant colors.
  • Biodegradable, offering a more sustainable alternative to synthetic fibers.

Step 2: Applications of Viscose Fibers

• Textiles: Used in clothing, home textiles, and upholstery due to their softness and versatility.
• Medical: Utilized in non-woven products like surgical masks and dressings.
• Industrial: Employed in various applications, including insulation and composites.

Step 3: Overview of the Production Process

The production of viscose fibers involves several key steps:

1. Wood Pulp Preparation:

   • High-quality wood pulp is sourced, often from sustainable forests.
   • The pulp is treated with chemicals to dissolve cellulose.

2. Viscose Solution Creation:

   • The dissolved cellulose is mixed with sodium hydroxide and carbon disulfide to form a viscous solution.

3. Filtration:

   • The viscous solution is filtered to remove impurities and ensure a smooth consistency.

4. Fiber Spinning:

   • The solution is extruded through spinnerets to create continuous filaments.
   • The filaments are then solidified by passing through a coagulation bath.

5. Washing and Drying:

   • The newly formed fibers are washed to remove residual chemicals.
   • Finally, the fibers are dried and cut to desired lengths.

Step 4: Quality Control and Sustainability Efforts

• Quality Control:
  • Regular testing is conducted to ensure the fibers meet industry standards for strength, dye uptake, and purity.
• Sustainability:
  • Kelheim Fibres emphasizes environmentally friendly practices, including the use of renewable resources and minimizing waste during production.

Conclusion

Viscose fibers play a significant role in the textile industry due to their unique properties and sustainable production methods. By understanding the production process and applications, you can appreciate the value of viscose in various products. For those interested in further exploration, consider researching the environmental impact of viscose versus synthetic fibers or looking into innovations in sustainable textile production.