Since June this year, the average operating rate of the polyester industry has increased compared with the same period of last year, and the profit of related polyester polyester products is also considerable.

Polyester has a low hydrophilicity and a relatively tight fiber structure, which is mainly dyed with disperse dyes. Polyester is dyed with disperse dye below 100 °C, which not only has a low dyeing rate, but also is difficult to dye dark. Therefore, high temperature and high pressure dyeing is generally used.

High temperature and high pressure dyeing method refers to dyeing in closed dyeing tank. Because the dyeing liquid temperature in the dyeing tank is higher than 100 °C, the steam pressure is greater than 1 atmosphere, which is suitable for dyeing fibers, yarns and fabrics. After the temperature of the dyeing solution is increased, the solubility of the dye in the dyeing solution and the dye saturation value of the fiber, as well as the diffusion rate of the dye in the fiber, can be improved, and the dyeing rate is fast, and the balance dyeing amount is also increased. Dyeing, dispersing agent and leveling agent are added to the dyeing bath during dyeing. The dyeing solution is maintained at about pH 5, and the dyeing is started at about 70 ° C. After gradually heating to about 130 ° C, the dyeing is continued for about 1 hour. A high temperature and high pressure dyeing machine can be used when selecting a dyeing device.

The high pressure high temperature dyeing machine adopts a new structure design method to ensure that the fabric can be operated at a high speed under a low tension state, and also has a collision point of the cloth blank, which can effectively ensure the fabric in the entire dyeing tank. The orderly stacking can also avoid the phenomenon of dyeing and folding to a large extent, and the cloth blank can be improved on the bulkiness and the hand feeling. The dyeing cylinder has a special inner net design on the main body to ensure that even if it is It is also able to maintain a smooth dyeing effect when dyeing high-density fabrics.

In addition, the high temperature and high pressure dyeing machine can be equipped with a fully automatic simulated liquid inlet, as well as a feeding and temperature control system to reduce the problem of poor dyeing cylinders.

Jingjiang Huaxia Technology Co., Ltd

——Specializing in the production of different kinds of dyeing machine.