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Overflow dyeing machine working principle and dyeing process
Apr 11, 2018

The overflow dyeing machine is a kind of dyeing cylinder with a length of about ten meters when it is used. The equipment has a rotating wheel in it, which will drive the cloth to rotate when it is used. In the lower part of the overflow dyeing machine is a thick and long. The dyeing vats and the dyeing liquors are all present in the dyeing tanks. The dyeing process of the fabrics mainly involves the dyeing in the lower dyeing tanks. The controlling of the running speed of the cloths controls the time of the infiltration of the cloth in the dyeing tanks, and also controls the dyeing effect.

Overflow dyeing machine is a group of four, each group of dyeing vats is thought of as a connected device principle, while the ingredient bar is on the side, which leads to the disadvantages of dyeing overflow dyeing machine, is the result of dyeing It may be that the dyeing effect of the cloth produced by each bar is different. It is farther and nearer from the material feeding cylinder and the four-cylinder exhibits a light-to-deep effect. For fabrics with darker colors, the effect is not significant. It can be quite large, but it is not suitable for the dyeing of cloths with lighter colors, and it is easy to have different effects on the degree of staining.

High temperature dyeing machine.jpg

Overflow dyeing machine to a certain extent is a special new era of rope dyeing machine, when used in the dyeing fabric in a relaxed state, by the small tension, dyed fabric feel soft, color uniformity, so are used for high pressure conditions The dyeing of lower synthetic fabrics, warp knitted fabrics, stretch fabrics, etc. In recent years, some atmospheric pressure overflow dyeing machines have also been manufactured, which can be used for atmospheric dyeing of natural fiber fabrics.

In the dyeing process of the overflow dyeing machine, the dyeing solution is pumped from the bottom of the porous plate at the front of the dyeing tank by a centrifugal pump, sent to the heat exchanger for heating, and then enters the overflow tank from the top. Two overflow pipe inlets are installed in parallel in the overflow tank. When the dyeing liquid fills the overflow tank, due to the difference between the upper and lower liquid levels between the dyeing tank and the dyeing tank, when the dye overflows into the overflow pipe, the fabric is driven into the dyeing tank, so reciprocating cycle, to achieve the purpose of dyeing.

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