Open-width pretreatment method of knitted fabric

Abstract

The invention belongs to the technical field of knitted fabric pretreatment. The invention provides an open-width pretreatment method of a knitted fabric, which comprises the following steps: cooking the knitted fabric in cooking liquor, and steaming in steaming liquor to obtain the open-width pretreated knitted fabric, the cooking liquor comprises a refining enzyme, hydrogen peroxide, a bleaching aid and a surfactant; the steaming liquid comprises an alkaline agent, a penetrant, tea saponin, hydrogen peroxide and a degreaser. According to the open-width pretreatment method disclosed by the invention, by reasonably selecting the components of the cooking liquor and the steaming liquor and controlling the concentration of each component and specific process parameters, the capillary effect, the whiteness and the gloss of the knitted fabric are remarkably improved, the bursting strength loss is small, the pH value of the fabric surface is good, and the handfeel is fluffy and soft. According to the open-width pretreatment method, the loss is small, the water consumption, the power consumption and the steam consumption of each ton of cloth are reduced, the cost is reduced, the dosage of reagents for cooking treatment and steaming treatment is small, energy is saved, and the cost is low; the open width pretreatment time is obviously shortened, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of pre-treatment of knitted fabrics, in particular to a method for open-width pre-treatment of knitted fabrics. Background technique [0002] For a long time, cotton knitted fabrics have been processed by high-temperature rope-like intermittent processing. Although the technology and equipment of this method are relatively mature, it has defects such as high energy consumption, high water consumption, low efficiency and large pollutant discharge. Most of the pretreatment processes use caustic soda to remove impurities, and the large-scale use of caustic soda results in high energy consumption, high water consumption, and high COD value of wastewater. Based on the current situation of the printing and dyeing industry and the needs of transformation and upgrading, the open-width continuous production process has attracted more and more attention. The open-width continuous production process has the characteri...

AI Technical Summary

Problems solved by technology

The difficulty of dyeing wool-cotton blended fabrics mainly lies in the control of the pre-treatment process. The current treatment method is easy to cause the loss of wool fiber and the effect is unstable, the wool effect and whiteness are poor, and the strength is low.