Study On Waterless Penetration Printing Of Polyester Fabric And Its Application In Double-Sided Functional Finishing

Polyester is a low-cost,easy to produce synthetic fiber.Polyester shows excellent stability,elasticity and wear resistance and other advantages,which making its widely used in the textile field.However,the wettability of polyester fabric is an important factor to determine the dyeing,printing and finishing properties of the fabric.pretreatment treatment is essential.Penetration printing is a printing technology that can get double-sided pattern or high permeability after a single scratch printing on this study.Meanwhile,the permeation printing technology and the various of dye additives will Reduce waste water and liquid emissions,carbon emissions.It will realize water-free and short process,it will achieve energy conservation and emission reduction,green environmental protection requirements.And then Study on functional finishing of polyester fabric for useing printing alternative dye.Therefore,this study firstly studied the influence of pretreatment treatment on wettability of polyester fabric,and then optimized the water-free infiltration printing technology with high color fastness to achieve the two-sided uniform color effect of polyester fabric.Finally,based on the infiltration printing method,the two-sided fluorescent polyester fabric was prepared.The specific research results as following:(1)Pretreatment process of polyester fabric infiltration printing:Taking water absorption and core suction height as test indexes,the polyester fabric was treated with liquid alkali,refining agent,water quality,permeating agent and whitening agent,investigating the wettability of polyester fabric.As a result,the increase of liquid alkali concentration(4 g/L)can significantly improve the water absorption and core suction height of polyester fabric.In addition,the wettability of the fabric can be further improved by refining agent,permeating agent and soft water.When the concentration of liquid alkali,refining agent and penetrant is 4 g/L,0.6 g/L and 0.3 g/L,respectively,the wettability of polyester fabric is the best,which the water absorption time is 1.04 s and the core suction height is 22.5 cm.Therefore,optimizing the pretreatment process can provide a simple and efficient method to improve the wettability of polyester fabric.(2)Paste preparation and printing process of polyester fabric penetration printing: The effects of additives and their dosage on color paste permeability,color depth,hand feel,air permeability and pattern outline of printed polyester fabric were studied.As results,2.5%thickener TF-316 M was used in high color fastness waterless infiltration printing process,the color paste had excellent permeability,uniform color distribution and clear pattern outline.When the concentration of color fastness promoter is 10%,the polyester fabric can achieve washable effect with dry rubbing fastness of 4-5 and wet rubbing fastness of 3,and it has no effect on the feeling and air permeability of the polyester fabric.Finally,the printed polyester fabric has excellent properties such as high color fastness,softness and color depth value without washing.It has practical significance in energy saving and emission reduction for waterless high color fast penetration printing process.(3)Penetrant printing was used to finish the polyester with the fluorescent: In order to obtain double-sided fluorescence effect of polyester fabric,the double-sided fluorescence finishing of polyester fabric was carried out based on penetrant printing.The results showed that in the process of fluorescence finishing,the selected three disperse dyes were treated by ultrasonic stripping making the dye particles were evenly distributed with the particle size ≤ 1000 nm.After printing,the positive and negative reflectance of polyester fabric is basically the same,and the dry and wet rubbing fastness to washing is 4-5.Among them,fluorescent yellow printed polyester fabric showed higher fluorescence color,and the fluorescence effect was evenly distributed.Compared with the original polyester fabric,the air permeability and softness of fluorescent polyester fabric have no obvious difference.This result provides a simple and convenient processing method for the new functional finishing technology.