1、 Due to the poor cotton blending of cotton yarn and the poor pretreatment of dyeing plant, the treatment method of hairiness head is introduced

a. Semi finished products can be slightly redone pretreatment, serious to light dusting before mercerizing.

b. The finished fabric should be peeled, then dusted, mercerized and colored.

c. After the finished product is washed, the hairiness can be removed or reduced.

2、 Treatment of crimping in elastic fabric

a. The pretreatment is done by small cylinder or cold reactor.

b. When making a long car, you need to add more cloth clips after boiling. After 1-2 times of shaping, you can do mercerizing and dyeing.

3、 Reasons for the decrease of finished product gram weight

a. Too much alkali concentration and too high processing temperature cause yarn fiber damage.

b. The finished door width is too wide.

c. The weft density decreases due to the excessive stretching of pretreatment.

4、 Treatment of grey cloth mildew

a. When the color of mildew is very light, do some light color, try not to do bleaching.

b. According to the depth of mildew, do some dark, in general, the darker the better color.

c. It can't be used when the mildew is heavy and affects the strength of grey cloth.

5、 When dyeing sensitive colors, how to deal with the uneven color absorption caused by poor yarn evenness?

It can be considered to do the pretreatment again to make the yarn fully bulky before dyeing.

6、 Matters needing attention when blowing three threads on roughened colored cloth

a. In order to prevent blowing off the hairiness of the cloth surface, use other cloth blocks to cover the two sides of the three threads before blowing.

b. If it causes the fabric to shine or feel weak, you can use fine sandpaper to gently polish the fabric to make it fluff.

7、 Color mark on weft in grey fabric (ring spinning)

a. In order to distinguish the spinning quality of each production shift, the grey fabric factory should make a mark with color on each weft drop. The color is bright red, blue, green, purple and so on. This kind of color can fade, does not affect after processing.

b. Test method:

(1) Pour the freshly boiled water on the color print, and the color print will disappear by itself.

(2) The pretreatment of printing and dyeing will disappear in case of high temperature.