Tencel or Lyocell is the new fabric that can replace the Bamboo. Tencel is manufactured in a proprietary process by the Lenzing Group, a international group of companies based in Austria. Tencel is manufactured in a similar way to bamboo fabric, but with important differences that may be the solution to green bamboo fabric manufacturing.
How is it make?
First, wood pulp is the main material. Pulps need to be bleached when it being be processing. However, the manufacture can utilize a closed-loop process and don’t use chlorine bleach to minimize environmental impact
Next, the wood pulp is turned into fibers through a process called “solvent spinning”. Wood pulp is dissolved in a chemical called N-Methylmorpholine N-oxide (NMNO). The liquid is squirted through thousands of tiny holes in a spinneret, forming individual Tencel fibers. The spun fibers are washed, the NMNO is retrieved from the water, and it is purified, and reused in a 99% closed-loop process. NMNO can be toxic, but small quantities of NMMO are actually produced in the body as a metabolite of several common drugs.
With a sustainable source of wood pulp, Tencel manufacturing has a much lower environmental impact, however despite considerate forestry practices, tree farms are more damaging to the ecosystem. The hardwood tree grows slowly, there are not much pulp to supply the manufacture.