In the washing and dyeing process of denim products, if spandex degradation occurs, the situation will basically be lost. It is irreparable, so the pre-production sample must be done to ensure that there will be no quality problems during large-scale production. According to the physical and chemical properties of polyurethane fibers, elastic denim products containing spandex cause no elasticity during the washing process, mainly washing During water processing, spandex may break, dissolve and other phenomena due to improper process formulation or operation, which will eventually cause blasting.
rinse During the process, because spandex is not resistant to chlorine bleach, nitrogen-chlorine bonds will form in hypochlorite solution, causing damage to the fibers, and the damage to polyether spandex is more serious. When the water temperature in the tank is too high or the time is too long during rinsing, , spandex will degrade, causing the fabric to lose its elasticity. So how to avoid the loss of elasticity during rinsing?
(1) Do pre-production tests;
(2) The water rifting during production must be adjusted before energy Inject into the cylinder, direct feeding is prohibited;
(3) Flooding must be added under the rotation conditions of the equipment to prevent local concentration from causing bounce;
(4) When bleaching water remains on clothes and drying at high temperature, chlorine release causes spandex to degrade. Pay attention to cleaning after bleaching;
(5) Strengthen personnel management for online work, monitor production conditions, and prevent quality problems caused by processing temperature or time exceeding process requirements.
Many people face such high risk of missing bullets When you ask, is there any better solution for rinsing and anti-blast loss? The answer is yes. Of course, there is Novixen cold bleaching enzyme solution that can completely solve the problem of bullet loss during rinsing, because cold bleaching enzyme only It works on the color of indigo, plays a bleaching role, and does not damage other fibers. It is very suitable for bleaching fabrics that are prone to elasticity.
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