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Yarn sizing
Common defects in denim warp dyeing and their prevention

Common defects in denim warp dyeing and their prevention

Common defects in the dyeing of denim warp yarn are mainly colored files, streaks, chromatic aberrations in the edges, color aberrations in the head and tail (or fragment color aberration), stains, and tank aberrations. 1. Color file Color profile refers to the color difference between the latitude segments, which presents a straight strip of uneven color, which is also called horizontal profile. The probability of the ball being broken after dyeing and going around the guide roller is small. The dyeing and sizing are carried out separately, and the color file defect is few. Therefore, the color file defect mostly occurs in the dyeing of the dyeing and sizing machine. The main reason is that the dyeing process stops in the middle of the dyeing process, and the yarn fragments staying in the dyeing tank dyeing liquid absorb excessively, resulting in color stalls. Generally, if the parking time exceeds 30s, it will cause defects in the cloth surface.
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