Basic knowledge about sand-washed tencel noodles

Basic knowledge about sand-washed tencel noodles

                       
Update:28-09-2021
Summary: Tencel fabric entered China in 1997, and it has been more than 20 years now. Although it has made g...
Tencel fabric entered China in 1997, and it has been more than 20 years now. Although it has made great progress and will drive the domestic lyocell to explode, it has never been the mainstream compared with cotton and polyester. There are still many Tencel whites in the natural market.
The most commonly used Tencel fabric is the G100 standard type. This kind of fabric has a remarkable feature, that is, the cloth surface will show a peach skin effect after being sand washed. It is precisely because of the sand washing process. , Resulting in a series of sand-washed Tencel fabrics that will not have problems on polyester and cotton fabrics, mainly in the following aspects:
1. Chromatic aberration. The bulk color of the sand-washed Tencel fabric and the confirmed color sample have a large color difference, a large cylinder difference, and a large unevenness, which are basically 3-3.5. Tencel color samples are not sand-washed or mixed with hundreds of sand-washed, bulk goods are sand-washed separately, and the sand-washing environment is different, and the color difference occurs; the degree and direction of the color change before and after the sand-washing is difficult to control artificially; After the silk is out of the tank, one horse is usually washed with sand as the ship sample to confirm, but there is still a color difference between the bulk and the sample; the Tencel sand washing tank only washes 2 horses, naturally there is a sand washing tank difference; the finished inspection has a sand channel or rub When the cloth surface is damaged, it will be improved by sand washing again or 3 times, and the difference will be even greater. The color change of Tencel fabric is also strongly related to the feeling of sand washing. If heavy sand or front and rear sand is required, the color will be It cannot be too high; the color light source and the moisture absorption state of the fabric will also cause color differences; the selection of good and stable reactive dyes and the recruitment of excellent workers to operate carefully will definitely reduce the color difference, but the dyeing factory is facing greater cost pressure In the case of strong dyeing factories, it also lacks impetus for improvement.
2. Abrasions, sand passages. Tencel has a coefficient of expansion of 1.4 when exposed to water, and sand-washed Tencel fabrics are prone to scratches and sand passages during dyeing and sand washing, especially dark sensitive colors such as navy blue, dark gray, and deep red, and light colors are much better. . Although we have taken measures such as reducing the volume of the tank, arranging for many times, and repeatedly sanding to improve it, we still cannot eliminate it.