Large roller negative-pressure steam-pad dyeing equipment and method

Abstract

The invention discloses large roller negative-pressure steam-pad dyeing equipment. The equipment comprises a cloth sending device, a dye padding device, a negative-pressure steam-pad dyeing device, a large roller steam-pad dyeing device and a finished product collection device arranged along the sending direction of cloth in sequence. The negative-pressure steam-pad dyeing device is used for heating and drying cloth in the condition of a default drying temperature. The large roller steam-pad dyeing device comprises a rack, a power assembly, a large heating roller, a high-temperature resistance conveyor belt and a support guide-wheel group. The large heating roller and the high-temperature resistance conveyor belt are used for cloth clamping to conduct steam-pad dyeing on the cloth in the condition of a default sublimation temperature, wherein the default sublimation temperature is higher than the default drying temperature. The large roller negative-pressure steam-pad dyeing equipment can reduce the water content of the cloth soaked in dye with a good pretreatment effect. Moreover, according to the equipment, cloth fibers can absorb dye molecules better, the dye utilization is high, the color yield is large, the color fastness is high, and floating color on the cloth surface is little, so that the subsequent washing load is relieved, and the discharge of sewage is less.

Description

technical field [0001] The invention relates to the technical field of textile dyeing and finishing, in particular to a large wheel negative pressure steam padding dyeing equipment and a method thereof. Background technique [0002] As we all know, disperse dyes will be sublimated into gas under certain temperature conditions, and a considerable part of the dye molecules in the traditional thermosol sublimation dyeing process are not absorbed in the fabric fibers after sublimation, but volatilize into the atmosphere Therefore, traditional dyeing equipment and dyeing methods have the problems of low dye utilization rate, shallow color yield, poor color fastness, and more floating colors on the surface of the dyed fabric. [0003] In particular, the existing dyeing equipment is poor in pretreatment of the cloth soaked in the dye liquor, which leads to excessive water content in the dye liquor when the cloth is dyed, that is, during the dyeing process, which is not conducive to...

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Problems solved by technology

[0002] As we all know, disperse dyes will be sublimated into gas under certain temperature conditions, and a considerable part of the dye molecules in the traditional thermosol sublimation dyeing process are not absorbed in the fabric fibers after sublimation, but volatilize into the atmosphere Therefore, the traditional dyeing equipment and dyeing methods have the problems of low dye utilization rate, light color yield, poor color fastness, and more floating colors on the surface of the dyed fabric.

[0003] In particular, the existing dyeing equipment is poor in pretreatment of the cloth soaked in the dye liquor, which leads to excessive water content in the dye liquor when the cloth is dyed, that is, during the dyeing process, which is not conducive to the sublimation effect of the dye in the dye liquor

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