Polyester/linen fabrics dispersed/reactive dyestuff thermosoluble thermosetting dyeing process discussion

Polyester / hemp fabric dyeing of the traditional process are generally taken two baths and two-step dyeing method, that is, the first disperse dyes dyeing polyester, reduction cleaning with reactive dyes after dyeing hemp. Using two-bath two-step dyeing process, the production cycle is long, low efficiency and high consumption. Due to the two baths, the production process produces a large amount of wastewater, increasing the burden of sewage treatment, seriously affecting the economic efficiency of enterprises. Now through the screening of dyes, auxiliaries and the selection of dyeing and finishing process conditions, polyester/hemp fabrics dispersed/active one-bath thermosoluble thermosetting dyeing processing to achieve better dyeing results.
Using citric acid as a non-ironing finishing agent, analyzed the citric acid concentration, catalyst, additives, finishing process conditions, etc. on the finishing effect of colored cotton fabrics (elastic recovery, elasticity enhancement rate; breaking strength, strength reduction rate; color difference, etc.), through orthogonal tests and analysis to obtain the optimal process conditions for the wrinkle-resistant finishing of natural colored cotton as follows: citric acid 9% (on the weight of the fabric), mixed catalyst 10% (on the weight of the fabric), amine triacetate 5% (on the weight of the fabric), amine triacetate 10% (on the weight of the fabric), amine triacetate 10% (on the weight of the fabric), amine triacetate 10% (on the weight of the fabric). Amine triacetate 5% (for fabric weight), baking temperature 160 ℃, baking time 150 s. The test shows that: after citric acid wrinkle finishing, the wrinkle-resistant performance of natural colored cotton has been improved to a greater extent, instead of the traditional hydroxymethyl wrinkle finishing agent, no formaldehyde exists on the fabric after finishing.