1.What is a fluorescent whitening agent?Fluorescent whitening agents themselves are almost colorless dyes that can absorb harmful ultraviolet rays from light, converting some into their own vibration energy and the other into visible blue light. This way, the clothes look whiter and more vibrant. In fact, it utilizes a visual effect.

1、Reasons for the appearance of dyeing defects. 1. Reason for grey fabric: Many potential defects in dyed fabric are caused by poor quality of grey fabric, such as weaving defects and yarn defects. Due to the mixing of different batches of yarn, weaving defects such as warp and warp stripes, weft and weft stripes are formed on the fabric.

What is an enzyme? Enzymes are proteins with catalytic activity, and they are also active. However, enzymes are neither microorganisms nor bacteria and have no life.

Printing and dyeing aids can be divided into printing aids and dyeing aids. Printing aids include adhesives, thickeners, crosslinking agents, emulsifiers, softeners, diffusers, and defoamers, while dyeing aids include leveling agents, fixing agents, dispersants, fluorescent brighteners, and softeners.

In fact, it is not difficult to determine the quality of denim fabrics, but now denim fabrics are constantly innovating and new fabrics are constantly emerging. Therefore, we need to constantly come into contact with new things and improve our identification ability. There are three methods to evaluate the quality of denim fabric.

Due to the continuous emergence of new technologies and products, printing and dyeing factories have been able to solve the old problem of balance between hand feel and fastness in high-end textile pigment printing processing, and have been able to smoothly apply it to various fiber components of non-woven fabrics, ribbed fabrics, and knitted fabrics.