Discover the environmental impact of ARTIFICIAL FIBERS

6 August 2018

@ INTERFILIERE SHANGHAI – September 26 & 27, 2018 

There are two large families of textile fibers: natural textile fibers and chemical textile fibers.

Let’s explore the technical properties of ARTIFICIAL FIBERS (Cellulosic and protein) and discover the environmental impact at the Innovation Forum from Interfiliere Shanghai.

VISCOSE

Viscose is a fiber obtained by modifying plant cellulose using toxic, non-reusable solvents; this is then extruded and drawn to the desired shape and length. This cellulose generally comes from wood (poplar, eucalyptus or Canadian white pine), but can also be derived from bamboo. Treatment with caustic soda gives to the viscose a very shiny or silky intensity.

The main difficulty in terms of traceability comes from the manufacturing process, because the plant pulp is chemically dissolved which makes it impossible to determine its origin.

PROPERTIES ADVANTAGES:

  • Shininess of silk.
  • Fluidity.
  • Good capacity for moisture absorption.
  • Easy care.
  • Easy to dye.

PROPERTIES DISADVANTAGES:

  • Not very elastic.
  • Low resistance (especially when it is wet).
  • Strong tendency to shrink.
  • Creases easily.
  • Tends to discolor.
LYOCELL

Faced with the toxic manufacturing process of viscose fibers, industrialists developed Lyocell. The wood pulp (beech, pine or spruce) is plunged into a bath containing a reusable organic solvent, which dissolves the cellulose. This is then filtered, extruded and drawn, as for viscose.

 

PROPERTIES ADVANTAGES:

  • Good resistance and extensibility, both dry and wet.
  • “Peach skin” feel.
  • Suitable for use as “micro-fibers” (fibers with a low diameter).

PROPERTIES DISADVANTAGES:

  • Sensitive to fibrillation.
MODAL

The modal process is based on viscose process but is different at the drawing and coagulation bath stages, which contain additional chemical products.

PROPERTIES ADVANTAGES:

  • Fluidity and crispness.
  • Good dimensional stability.
  • Low creasing.
  • Good capacity for moisture absorption.
  • Very soft feel.

PROPERTIES DISADVANTAGES:

  • Relatively low resistance but higher than viscose one (especially when it is wet).
CUPRO

The Cupro process, which is similar to the viscose one, uses linters (short fibers which cling to cotton seeds) diluted in a Cupro-ammonium solution.
Once they have been modified in this way, they are then extruded as filament threads with the desired shape.

PROPERTIES ADVANTAGES:

  • Fluidity and crispness.
  • Soft feel.
  • Good hang.
  • Easy care.

PROPERTIES DISADVANTAGES:

  • Lower mechanical resistance than cotton.
  • Loss of resistance when wet and high tendency to shrink.
  • Discoloring.
  • More expensive than viscose.

MORE INFO. ABOUT INTERFILIERE SHANGHAI

Comments(0)

Leave a comment

Your email address will not be published. Mandatory fields are marked by an asterisk *

Stay in touch with the show and market's latest news

Subscribe to the newsletter

I am

Follow us on social media