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Textile | L-Vis Inline Viscometer: Viscose

Viscosity is a crucial parameter before and during the spinning process step of viscose fibers. While an out of specification viscosity directly affects the filament’s quality, a too high viscosity also increases the required energy effort. Using the inline viscosity measurement L-Vis 510 the increasing viscosity in the ripening step is monitored to end this process step and to identify the optimum timing for the wet spinning. A consistently high product quality and optimum process conditions are ensured. As an additional benefit, the effort for manual sampling and lab measurements can be reduced.

Introduction

The process of dissolving and spinning cellulose was already introduced at the beginning of the last century and started to replace the natural textile fiber cotton, which was already known for very long. Especially the quality improvements and further possibilities with this fiber were driving an ongoing development.

Viscose fibers are made of pure cellulose. For their extraction, cellulose is transformed in a controlled process into continuous filaments. They have the advantage of being a natural product with a high uniformity and programmable properties.

Since the viscosity is one of the major influencing factors in the viscose fiber production, an inline viscosity measurement is applied to monitor the viscosity before the spinning process. Conventional, the process was only controlled with a falling ball viscometer, installed next to the production line.

The Anton Paar solution with the L-Vis 510 can provide a smooth and stable viscosity measurement which correlates best with the well-established manual falling ball method.

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