In the dyeing and processing of elastic fabric products, if the spandex degrades and results in inelasticity, it is basically impossible to repair. Therefore, it is necessary to prepare the sample before production to ensure that quality problems do not occur during large-scale production. According to the physical chemistry of polyurethane fiber Performance, elastic denim products containing spandex cause inelasticity in the process of washing water, mainly due to process recipe or improper operation in washing water process, resulting in spandex breakage, dissolution, etc., eventually causing loss of elasticity.

During the rinsing process, due to the spandex-resistant chlorine bleach, nitrogen-chlorine bonds are formed in the hypochlorite solution to damage the fibers, and the polyether-spandex is more severely damaged. When the water temperature in the cylinder is too high or too long during rinsing, the spandex will degrade, causing the fabric to lose its elasticity. So how do you avoid losing the rinsing process?

(1) Do a pre-production test;

(2) The production of bleaching water must be deployed before it can be injected into the cylinder, prohibiting direct feeding;

(3) Drifting water must be added under the condition of rotation of the equipment to prevent the loss of ballistic due to high local concentration.

(4) The residue of bleaching water on the garments after high temperature drying causes the degradation of spandex due to release of chlorine, and attention is paid to cleaning after bleaching;

(5) Strengthen the personnel management of online work, monitor the production status, and prevent the processing temperature or time from exceeding the process requirements to cause quality problems.

Many people will ask when they are facing such a high risk of insult. Is there a better rinsing solution? The answer is yes. Of course, Novozymes' enzyme solution for cold-drifting can completely solve the insufficiency problem during rinsing because the cold-drifting enzyme only acts on the indigo color and plays a role in bleaching. It has no effect on other fibers. The damage is very suitable for the bleaching of fabrics with volatile shells.