Intermittent dyeing

Intermittent dyeing is a method of batch dyeing according to the capacity of the equipment. The dyeing equipment usually has the following types.

1. Jig dyeing machine

The intermittent dyeing machine of flat-width intermittent dyeing machine can be divided into two categories of normal temperature and pressure jiggers and high-temperature and high-pressure jiggers. In China, the amount of normal-temperature atmospheric-pressure jiggers is widely used, and it is still the main part of small dyeing factories. Staining equipment. The former is suitable for the dyeing of pure cotton and hemp fabrics. The most commonly used dyeing process is reactive dyeing and dyeing of sulfur dyes; the latter is applicable to the dyeing of synthetic fibers or their blended fabrics, and is commonly used for polyesters and their blended fabrics. Disperse dyes.

There is also a fully automatic large-capacity normal temperature and pressure constant tension jigger for room temperature dyeing and pretreatment of cotton, hemp fabrics and silk. It can realize automatic control of fabric tension, roll pressure, liquid flow and temperature parameters, and is easy to operate. It will help improve dyeing quality and production efficiency, as well as save dye and chemical materials and energy consumption. In recent years, large-capacity constant-tension high-temperature high-pressure automatic jigging machines have also been developed abroad, which have a higher degree of automation, multi-function effects (can be used for scouring), and can realize small-batch, multi-variety production. However, there are not many printing and dyeing plants using these two large-capacity jiggers in China. Currently, they cannot count the mainstream dyeing methods, but there should be some room for development in the future.

Flies dyeing machine

Rope dyeing machines can usually be divided into two categories: normal temperature and pressure rope dyeing machines and high temperature and high pressure rope dyeing machines. New air flow dyeing machines that have emerged in recent years also belong to the category of rope dyeing machines.

(1) Room temperature and pressure rope dyeing machine: ordinary rope dyeing machine and normal temperature and pressure overflow dyeing machine belong to the normal temperature and pressure rope dyeing machine. It is suitable for the dyeing of wool fabrics, silk fabrics, pure cotton and blended knitted fabrics and woven fabrics that are not suitable for tension. It is widely used in silk dyeing factories and knitwear bleaching and dyeing plants, and is rarely seen in ordinary printing and dyeing plants that use cotton woven fabrics as the main processing object.

(2) high temperature and high pressure rope dyeing machine: high temperature and high pressure rope dyeing machine can be divided into high temperature and high pressure overflow dyeing machine, high temperature and high pressure spill dyeing machine and high temperature and high pressure jet dyeing machine. It is suitable for high temperature and high pressure dyeing of synthetic fibers and their blended fabrics. It is widely used in dyeing equipments of polyester fabrics of wool-like fabrics.

(3) Air flow dyeing machine: Air flow dyeing machine is a new type of dyeing equipment newly emerged in recent years. Compared with the traditional liquid dyeing machine, the air flow dyeing machine uses aerodynamic principles, using high-speed air jets through the nozzle atomized dye liquor to optimize the effect of jet dyeing, and drive the fabric to run without dye or aqueous media transport fabric . It can be used for the dyeing of cotton fabrics, chemical fibers and their blended fabrics. The dyed products can have the effect of rainbow dyeing (similar to multi-color dyeing, and there are intermediate transition colors, the color change is numerous, there is no law to follow, which is different from printing, giving Romantic and elegant.) At present, air flow dyeing machines that are invented are mostly high temperature and high pressure airstream dyeing machines. Currently, they are mainly used for the dyeing of fabrics such as ultra-fine fibers and Lyocells. Its biggest feature is dyeing with a low bath ratio (synthetic fiber fabric dye bath ratio of 1:2), can reduce the consumption of dyes, chemicals, water and energy, is a green environmental protection equipment, can gradually replace part of the overflow dyeing Machine, with a certain advantage of late. At present, such dyeing machines are still undergoing continuous improvement. There are not many manufacturers actually used in our country, but it is foreseeable that their development prospects are good.

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