Analysis of the most popular printing quality prob

2022-09-21
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Analysis of printing quality problems (17

<3. Don't knock and touch blindly during inspection. P>17. Printing water stains

are stains or plaques caused by water droplets. This is caused by condensate dripping or splashing on the fabric in a period of time after printing and before the end of steaming.

. Scraper stripes

refers to the band like dirt defects in the radial direction of roller printing. This defect occurs when the printing scraper pressure is insufficient or impurities are attached.

(drag knife)

Spatula (deep scratch)

19 Unsmooth color removal or poor anti dyeing

refers to the unclear effect of white removal, color removal or anti dyeing printing. Most of them occur under improper conditions of anti dye discharge paste, color paste, scraping pressure or coloring (steaming provides sufficient force for zigzag reinforcement)

20. Paste dry crack

high resolution; The upper and lower limits can be set

is a pattern defect caused by the cracking of the color paste after printing. Most of them are caused by improper post-processing or inappropriate viscosity of color paste

21. Rope streak

a streak formed by leaving traces of rope or rod used in steaming engineering on the printed cloth. It usually occurs when the temperature of steaming engineering is too high or the finishing and setting temperature is too low

22. The rope shaped color bar

is the discoloration or contamination caused by the contact of the printed cloth with the rope or rod in the steaming project. It is usually caused by steam condensing on rope or rod

23. Needle shedding or clip dropping marks

are defects caused by the falling off of the needle or clip of the tenter or the abnormality on the inner side. It is mainly caused by poor needle clips or cloth clips of the stenter, abnormal track and abnormal fabric width

24. White spots

are defects caused by the failure of printing color paste on part of the pattern. It usually occurs when foreign matters are attached to the screen film or yarn knots and foreign matters on the fabric make the color paste unable to be printed

25. Flapping

refers to the defect that exposes the white background when stretching or bending the fabric. It usually occurs when the paste viscosity, sieve size, scraping pressure and other conditions are inappropriate, resulting in poor penetration of the paste

26. Ripple defect (cloud spot)

2 Regardless of the hardware reasons of the material testing machine, we can consider the human factors

the ripple defects on the printing pattern. It usually occurs when the silk of the screen or the pattern groove of the printing drum overlaps with the yarn organization of the printed fabric and interferes with each other

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