//Semi-Synthetic Cellulose-Based Fibres//
Acetate / AC and Triacetate / TA
Both are so-called cellulose derivative fibres. The cellulose forms a chemical compound with acetic acid. Creating cellulose acetate. In the dry spinning process, this textile pulp is turned into continuous thread by spinnerets. In the case of triacetate, the textile fibre is created by adding dichloromethane. Both have an elegant sheen (triacetate also in matte), high colour intensity with brilliant colours like silk. They are heat-sensitive and have very little water absorbency.
Triacetate is a particularly lightweight fabric - even lighter than Linen, Wool or Cotton. Triacetate hardly creases and is much more heat-resistant than acetate. Triacetate feels elastic, smooth and supple on the skin and is set apart by its high level of wearing comfort. The easy-care fabric dries quickly after washing. What's more, triacetate fabrics are sustainable, as they are made from renewable resources. Triacetate fabrics are used primarily to produce clothes like elegant pants, blouses, skirts, underwear, accessories, or inner lining.
Cellulose acetate on the other hand is primarily used for lining material, often combined with viscose. The yarn for triacetate fabrics has been produced exclusively by Mitsubishi in Japan since 1967.
Lyocell / CLY
Lyocell Process
The Lyocell production process is the most modern for the manufacturing of fibres from wood. It has been used successfully on an industrial scale for about 25 years and is particularly friendly to the environment - an alternative to the complicated chemical production process of viscose and modal fibre. The idea behind it is that the cellulose is dissolved and processed in a closed cycle without any chemical modification.
Like LENZINGTM viscose fibres and LENZINGTM modal fibres, the source material cellulose is from sustainable forestry. An organic solvent called N-methylmorpholine-N-oxide (NMMO) is used which dissolves the cellulose without requiring chemical modification. This makes the lyocell process much simpler than the viscose process. In the method developed by Lenzing, more than 99% of the solvent is reclaimed in a closed cycle and repeatedly fed back into it. In addition, Lenzing has continued to develop the lyocell production process over the years and steadily reduced the energy consumption thanks to continuous optimisation.
TencelTM / TN
TencelTM is sustainable.
The name TENCELTM stands for the textile premium brand of the Lenzing company. It comprises all TENCELTM standard fibre types originating in nature. TENCELTM fibres are regenerated of natural origin; made from cellulose in a chemical process. Standard starting material used to produce TENCELTM include the following fibres: modal, viscose, and natural cellulose lyocell. Obtained from decorticated wood that verifiably comes from sustainable forestry.
100 % of the wood is utilised (source: Lenzing). The production of TENCELTM is a chemical process which takes place in several steps. In simplified terms, fibre pulp is transformed into cellulose. The spinning solution obtained this way is pressed through nozzles and spun into a continuous thread. The verified recovery rate of the employed production materials in the fibre production is over 99% (source: Lenzing). The production of TENCELTM meets highest environmental criteria.
Emphasising the high resource efficiency and the low environmental impact, TENCELTM fibres are biodegradable and compostable. TENCELTM fibres are characterised by their extraordinary skin friendliness, softness and great breathability.
Cupro / CU
Cupro is produced in a slightly different spinning process than viscose. However, it essentially has the same characteristics as viscose. Cupro is also produced sustainably.
Modal Fibre / MD und Viscose / VI
Viscose and modal fibres are cellulose regenerated fibres. The cellulose is dissolved into textile pulp in carbon disulphide. This is then spun in a wet spinning process (pushed through spinnerets). Here, fineness, fibre cross section, etc. can be modified as desired. Both are produced as continuous thread and as fibres.
Compared to modal fibre viscose has a notably lower dry and wet strength, both have little elasticity and are therefore prone to crease. Viscose can be lustrous or matte, has a pleasant drape, is delicate, soft and skin-friendly. It is used as lining material, dress fabric and blousing as well as for underwear, plain and printed, rarely
colour-woven. Viscose is also widely used in jersey and knitwear.
Modal fibre has a significantly better wet and dry strength in comparison to viscose. I.e. especially seen in its great washability. Therefore, modal fibre is frequently used in combination with cotton.
Viscose and modal fibre are sustainably produced fibres from controlled plant cultivation. As well as from the "waste" in cotton production.