Preparation method of modified polyester fancy style knitted fabric

Abstract

The invention provides a preparation method of a modified polyester fancy style knitted fabric, and relates to a knitted fabric. The method comprises the following steps of step A, selecting modified polyester fiber or modified polyester fiber and Spandex filaments; weaving the materials into fabric blank cloth with undershirt cloth, sanding undershirt cloth, rib fabric, color rib fabric, terry fabric, flannelette or air layers through weaving equipment; step B, performing open-width water washing on the fabric blank cloth; step C, pre-shaping the fabric blank cloth; step D, performing pretreatment on the fabric blank cloth; step E, dyeing the fabric blank cloth through cationic dyeing agents; step F, drying the fabric blank cloth; step G, re-shaping the fabric blank cloth. Compared with the existing product, the modified polyester fabric produced by the method has the advantages that the styles are various; the colors are vivid and rich; the performance achieves long effect and stability; the color fastness is good; the color dyeing is uniform; the functions of moisture absorption and fast drying, fuzzing and pilling resistance, static electricity resistance and the like are also achieved; in the production process, the energy consumption is low; the consumption of auxiliary agents is low; the cost is low; the fabric belongs to an environment-friendly fabric.

Description

technical field [0001] The invention relates to a knitted fabric, in particular to a modified polyester fancy-style comfortable fabric. Background technique [0002] Polyester fiber is a hydrophobic synthetic fiber. Due to the particularity of the chemical structure of ordinary polyester fiber polymers, polyester fiber lacks functional groups that can combine with direct dyes, acid dyes, basic dyes, etc., although it has the ability to form hydrogen bonds with disperse dyes. Ester-based, but the molecular chain structure of polyester is tight, and the dye molecules are not easy to enter the fiber, which makes dyeing difficult. Therefore, the dyeing of polyester fabrics needs to be done under high temperature and high pressure conditions (120 ° C ~ 130 ° C) or hot melt conditions (180 ° C ~ 220 ° C). ℃) for dyeing, the energy consumption is very large. But even if it is dyed at high temperature, polyester fiber can only be printed and dyed with some ordinary colors, the colo...

AI Technical Summary

Problems solved by technology

This method is rarely used due to the high price of additives and the difficulty of recovery.

In order to be able to dye rich colors, resin finishing agents are often added during dyeing, but after resin finishing, the rubbing fastness and sublimation fastness of polyester fibers decrease, and dye migration is prone to occur at high temperatures

Or use the carrier dyeing method for dyeing, but the biggest problem with the carrier dyeing method is the toxicity and odor of the carrier. The toxic carrier will have a great impact on the operators, and the dyeing wastewater will be discharged into the river, poisoning aquatic organisms and animals. Pollution of water sources; these toxic carriers will be attached to the clothes and are not easy to wash off, causing greater harm to the human body

The non-toxic and widely used cinnamic acid is used as the carrier. Although it avoids the odor and toxicity of common carrier dyeing, the dyeing effect is affected, and the color fastness and dye exhaustion rate are all reduced.

However, the polyester fabric modified by polyester fiber becomes poor in elasticity after modification, and it is easy to cause uneven dyeing, serious static electricity, poor spinnability, and single fabric style during the dyeing and finishing process.

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