Introduction Of Dyeing Process For Knitted Fabrics

Knitted fabric at room temperature

When the dosage of sodium carbonate is 8g/ PI L, it can achieve high fixation rate and uniform dyeing.

The amount of sodium bicarbonate used in dyeing is 10~1 g/L, which can achieve high fixation rate and uniform dyeing.

The coloring prescription is the same as that of light coloured sodium carbonate 6g/L and medium 10g/L.

The dyeing conditions were as follows: dyeing temperature to temperature, vehicle speed 40m/min, rolling rate 6%, and dyeing time.

The coloring time is 6 to 10h, and the dyeing requirement is reached. The dyeing time is 8 to 1H when dyeing. The dyeing requirement is achieved.

The cold dyeing time is too long, even though the dyeing is uniform, but the dye is hydrolyzed, so the dyeing time should not be too long. The same dyeing time should not be too short. The first one is uneven dyeing. Two, the dye uptake rate is low, resulting in waste and the cost is greatly improved. In order to ensure the dyeing quality, the cold dyeing time is 6 to 10h when dyed light, and 8 to 1H when dyeing.

The experiment showed that the dyeing of the knitted fabric was not obvious in the same cold dyeing time, so the cold dyeing temperature was ~ C.

The car experiment is based on the above experimental parameters to cool the knitted fabric.

Dyeing prescription: SNE orange 1g/L, SNE scarlet l0g/L, SNE blue 7g/L, chelating dispersant DF-101 g/L, sodium silicate 0mL/L, sodium carbonate l0g/L.

Dyeing conditions: dyeing temperature to temperature, dyeing time 10h, vehicle speed 40m/min, rolling rate 6%.

After testing, the dry rubbing fastness of the dyed fabric is 4 to 4, and the wet rubbing fastness to grade 4, the handle is soft and the color is even.

It can save electricity by 119%, save steam 1%, and save water 110%.

The big car experiment proved that the cold pad batch treatment of knitted fabric has obvious energy saving effect, good fixation rate, especially good elasticity and soft luster.

Common problems and solutions in the production process are mainly caused by water glass. The dyeing process should be washed with soap and added with chelating dispersant DF-101.

In the dyeing process, seams and head seals are found. The main causes of seam printing are winding tension, fabric variety, seam head condition and vehicle speed.

Crease the surface of the fabric and make the surface crinkle evenly.

Commonly known as crepe silk crepe silk varieties, there are many crepe de Chine, crepe de Chine, fragrant crepe, special state, etc. it is characterized by soft touch, bright color, soft, elastic crepe can do various clothing solutions to control the speed, do not hurry up and down slowly, winding tension is not too big, can be covered with plastic cloth to solve.

The cause of head and tail chromatic aberration is related to the choice of dyestuffs. The dyes with almost the same alkali resistance should be selected for color matching. Finally, SNE orange, SNE red and SNE blue are selected as three primary colors. The speed is related to the speed of the vehicle, and the speed is fast and slow, which is easy to cause chromatic aberration. Therefore, the speed should be stable and generally controlled at 40m PI min.

Causes of poor color fastness: improper washing, soaping temperature is not high, soap dosage is not enough, soap is not enough.

The solution must be washed first, the soaping temperature is higher than 9 C, the time is not less than 10min, the dosage of soaping agent should be enough, and the final washing should be adequate.

Cold pad batch dyeing of knitted fabric with SNE dyes has strong color, good color fastness, high dyeing quality, soft texture, good weave and drapability.

Cold pad batch dyeing can reduce waste water, save energy and reduce consumption, and significantly reduce cost. It is suitable for small batch and multi varieties fabrics.

It can significantly improve economic efficiency.