Application Of Low Alkali Cold Pad Batch Pretreatment Process

In the cold reactor production process, due to the existence of natural impurities and slurry in the cold cloth, it has very strong water repellency.

Special attention should be paid to the working fluid. First, the speed should not be too fast, not more than 60 meters / minute; second, the first rolling mill must have great pressure and strive to dry.

The pressure of the second rolling cars should be controlled within 0MPa, so that the fabric has sufficient liquid volume.

The "A" rack shall be driven by an active coil winding machine.

The pressure of the "A" rack pressing cloth roller should be as small as possible, so that the liquid on the fabric is not discharged. When the volume is rolled, the amount of liquid on the fabric is slightly better at the ends of the coil.

Many printing and dyeing enterprises ignore the importance of cold pad batch process management and equipment selection for the one-sided pursuit of output. They use passive marking, faster speed and larger rolling pressure, so that the liquid content on the fabric is low, which only plays a common role in desizing, but can not achieve the desired scouring effect. The latter process has to be scoured and bleached again, so the speed, pressure and liquid volume can not be ignored in the production management of cold pad batch.

Washing is a very critical process, whether it is conventional cold pad batch technology or

It is very important to wash the water after short evaporation. The size, impurities and pigment of the fabric can be used for about 0 hours. The elasticity and fluffiness of the fabric can be compared with that of the natural wool, and the color is bright.

It has not only wrinkle resistance but also good heat retention, which is about 15% higher than that of the same kind of wool fabric.

It is light resistant, heat-resistant, light in weight, but poor in moisture absorption and feels sultry.

Most of them have been swollen, emulsified and dissolved.

After being treated with low alkali cold pad batch, the fabric has good wettability and wool effect after full washing. It has been able to meet the requirements of dyeing and dyeing.

The results are as follows: the traditional cold pad batch process and the low alkali cold pad batch have not changed in the process. The amount of caustic soda has changed greatly, and the amount of caustic soda has changed greatly. The traditional caustic soda / above has changed to a low concentration of about 0 grams / liter, that is, from the traditional cold pad batch process, the use of caustic soda and the scouring of auxiliary agents are changed to focus on the use of auxiliaries and the reduction of the consumption of caustic soda. Because of the low alkali pile up, the length of the stacking time and the change of climate temperature do not cause potential damage to cotton fibers, and the time of unwinding is not strictly restricted by time, and the production of adjustable space increases.

It is possible to make full use of the caustic soda washed by the mercerizing machine to reduce the discharge of sewage. The profit is the basis of cooperation and the standard of inspection, but it is definitely not the only one, nor the ultimate goal.

Dealer integration is not only about interests, but also skills.

It can also reduce costs.

The content of caustic soda in the traditional cold reactor sewage is much higher than that in the low alkali reactor. It is necessary to use a large amount of sulfuric acid to neutralize the caustic soda in the waste water. The content of caustic soda in the low alkali cold reactor sewage is very low, and it does not need to consume too much sulfuric acid, which can reduce the considerable water treatment cost for the factory.

The production and operation of several printing and dyeing factories not only saved a lot of caustic soda for the factories, but also reduced the pressure of factories in the treatment and discharge of sewage.

Low alkali cold reactor pretreatment process

It is worth promoting.