Do u know the difference of tencel, viscose, modal, lyocell?

1. They are all regenerated cellulose fibers:

Regenerated cellulose fiber is made from natural cellulose such as cotton linter, wood, bamboo, bagasse, reed, etc., through chemical treatment and mechanical processing.

Among the chemical fibers, Viscose, Modal, Lyocell, Triacetate, Polynosic, Cupro and Bamboo Pulp fibers and the like belong to the category of regenerated cellulose fibers.

2. Viscose and Rayon:

First of all, it needs to be clear: Viscose and Rayon both represent viscose fibers, there is no difference. Viscose Rayon is also used to represent viscose in some places.

In Europe, the ISO standard is accustomed to use Viscose, while the US FTC is accustomed to use Rayon, and later also recognized ISO's Vicose.

In China, in order to distinguish viscose filament and staple fiber, some people use Viscose to represent filament, called "rayon", and use Rayon to represent staple fiber, called "rayon".

3. Modal:

Modal is a regenerated cellulose fiber with high wet modulus High-wet-modulus (HWM). (See the second category in Table 1)

In the early 1940s, Japan successfully developed high wet modulus viscose staple fiber, called "Toramomen tiger kapok", and China also produced this fiber in 1965, named it "rich fiber", referred to as "rich fiber". ”, this fiber overcomes the fatal shortcomings of viscose fiber, and its performance is close to that of cotton fiber. In the early 1950s, high wet modulus viscose fibers were industrially produced.

The most famous is the Austrian Lenzing (Lenzing) company. They named the high wet modulus regenerated cellulose fiber as Lenzing Modal. Later, the term Modal (Modal) was also established as a synonym for high wet modulus viscose fiber. Now ISO Modal's fiber classification already exists in the standard, and Modal can be used to identify the textile tag.

4. Tencel and Lyocell:

Tencel (tencel) is the brand name of Lyocell fiber produced by the British Acocdis company, and the Chinese name is "tencel" registered in China. And Austria Lenzing (Lenzing) company's Lyocell fiber is named: Lenzing-Lyocell.

In 2004, Austrian Lenzing acquired the Tencel subsidiary of Acordis, so Tencel also became Lenzing's trademark.

Lyocell fiber is a high-strength regenerated cellulose fiber. (See the third category in Table 1) In 1989, it was officially named by the International Man-made Fiber and Synthetic Fiber Committee. The U.S. FTC has made Lyocell a classification under viscose that can be used on textile labels.

5. The difference between viscose, modal and lyocell:

How to distinguish viscose and modal?

According to the definition of BISFA, the strength and wet modulus of modal must reach the specified values, that is, the breaking strength must be greater than 3.14cN/dtex, and the wet modulus must be greater than 8.8cN/dtex.

The difference between modal and lyocell:

Both viscose and modal are regenerated cellulose fibers using viscose method, and lyocell is regenerated cellulose fibers using solvent method.

The former is formed by first sulfonating cellulose to form cellulose sulfonate, which can be dissolved in caustic soda, and then desulfurized by spinning; the latter is formed by directly dissolving cellulose in NMMO and spinning.