A kind of cotton fiber dyeing device and its dyeing method

Abstract

The invention provides a cotton fiber dyeing device, comprising: an unwinding unit, a circulating mesh belt unit, a spraying unit, a calendering unit and a feeding unit; the calendering unit includes a plurality of paddle equipment arranged in sequence; The circulating mesh belt unit includes an upper circulating mesh belt and a lower circulating mesh belt, both of which form a separate closed loop; the lower circulating mesh belt is connected to the unwinding unit, and the upper circulating mesh belt is connected to the rolling unit first The rolling equipment is connected; the spraying unit is located in front of the first rolling equipment of the rolling unit and above the lower circulating mesh belt. The invention provides a cotton fiber dyeing method, comprising: making raw cotton fibers into a cotton fiber layer; transporting the cotton fiber layer horizontally through a guide belt, spraying the dye solution first, and then carrying out multiple channels of dyeing during the transport process. Rolling and pressing to obtain the dyed cotton fiber layer. Cotton fibers are dyed by using the dyeing device provided by the application, which can make the cotton fibers be dyed evenly, consume less dyeing liquid, have good dyeing effect and high work efficiency.

Description

technical field [0001] The invention belongs to the technical field of textile dyeing, and in particular relates to a cotton fiber dyeing device and a dyeing method thereof, in particular to a continuous dyeing device for cake-shaped cotton fibers and a low liquor ratio dyeing method for cotton fibers. Background technique [0002] Cotton fiber is an important raw material for the textile industry. It is widely used because of its good properties such as strong hygroscopicity, good softness, good air permeability and wear resistance. With the continuous improvement of people's living standards, the demand for different fabrics is gradually increasing, and some of the fabrics are woven from cotton fiber yarns of different colors. The cotton fiber yarns of different colors need to be dyed by some special equipment. Traditional cotton fiber dyeing is divided into cheese dyeing and loose fiber dyeing. [0003] In the prior art, because cotton fiber belongs to short fiber, conti...

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Problems solved by technology

The dyeing method involved in the above-mentioned prior art belongs to intermittent dyeing, and only a certain amount of fibers can be dyed at a time, and continuous dyeing cannot be carried out.

At the same time, this dyeing method puts cotton loose fibers into the dyeing cage (or dyeing vat) during dyeing, and starts the circulating pump to circulate the dyeing liquid in the dyeing cage (or dyeing vat) for dyeing, but during the dyeing process, the dye is absorbed by the cotton Layers of fibers are hindered and cannot evenly enter the interior of the fibers, resulting in uneven dyeing, which will affect the final effect of cotton fiber dyeing

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