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Alkali deweighting and dyeing one-bath production process of polyester fabric

A production process and fabric base technology, applied in dyeing, textiles and papermaking, etc., can solve the problems of long time, waste of energy, non-environmental protection, etc., and achieve the effect of high color fastness

Pending Publication Date: 2020-11-10
嘉兴市中威印染股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the existing alkali reduction process not only takes a long time, but also wastes a lot of energy, which does not meet the requirements of environmental protection

Method used

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  • Alkali deweighting and dyeing one-bath production process of polyester fabric
  • Alkali deweighting and dyeing one-bath production process of polyester fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The one-bath production process of alkali weight reduction and dyeing of polyester fabrics involved in this embodiment includes the following steps in sequence: S1 alkali weight reduction treatment, S2 alkaline dyeing, S3 hot water washing and S4 cold water washing.

[0019] In step S1 alkali weight reduction treatment, the polyester fabric is placed in a 6% sodium hydroxide solution with a bath ratio of 1:5; it is treated at 135°C for 45 minutes. After calculation, under this bath ratio and sodium hydroxide concentration, there is a small amount of sodium hydroxide remaining, which can provide a dyeing environment for subsequent alkaline dyeing. And at this temperature, the sodium hydroxide and the polyester fiber can react quickly, and the weight reduction rate can reach about 25%. And after the alkali weight reduction treatment, the softness of the warp-knitted fabric reaches the feel of cotton fiber.

[0020] In step S2 alkaline dyeing, the temperature of the treat...

Embodiment 2

[0027] The one-bath production process of alkali weight reduction and dyeing of polyester fabrics involved in this embodiment includes the following steps in sequence: S1 alkali weight reduction treatment, S2 alkaline dyeing, S3 hot water washing and S4 cold water washing.

[0028] In step S1 alkali reduction treatment, the polyester fabric is placed in a 6-8% sodium hydroxide solution with a liquor ratio of 1:5; and treated at 130° C. for 30 minutes.

[0029] In step S2 alkaline dyeing, the temperature of the treatment liquid in the previous step is lowered to 50°C, and then 3% o.w.f of basic disperse dye, 4g / L of leveling agent, and 15g / L of dispersant are added, and the temperature is increased at 0.5°C / min Raise the temperature to 100°C, then add 10g / L polyester hyperbranched polymer, keep it warm for 20min, and then raise the temperature to 120°C.

[0030] The dispersant used includes 3 parts by mass of benzimidazole, 2 parts by mass of ethyl methacrylate, 3 parts by mass...

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Abstract

The invention discloses an alkali deweighting and dyeing one-bath production process of polyester fabric. The process sequentially comprises the following steps of S1, alkali deweighting treatment: putting the polyester fabric into a solution containing 6-8% of sodium hydroxide, wherein the bath ratio is 1: 5-6; treating for 30-45 minutes under the condition of 130-135 DEG C; S2, alkaline dyeing:cooling the treatment solution in the previous step to 50-60 DEG C, then adding alkaline disperse dye, a leveling agent and a dispersing agent, heating to 100-110 DEG C, then adding a polyester hyperbranched polymer, carrying out heat preservation for 20-30 minutes, and then heating to 120-125 DEG C; S3, hot water washing; and S4, cold water washing. According to the alkali deweighting and dyeingone-bath production process for the polyester fabric, an alkali deweighting and dyeing one-bath process is achieved, alkali deweighting is conducted firstly, then alkaline disperse dye is used under the alkaline condition, and then the polyester hyperbranched polymers is used in a combined manner, so that the dyeing color fastness is high.

Description

technical field [0001] The invention relates to the technical field of post-finishing of polyester fabrics, in particular to a one-bath production process of alkali weight reduction and dyeing of polyester fabrics. Background technique [0002] Polyester is the fastest-growing and most productive type of fiber among synthetic fibers. It occupies a considerable proportion in the entire textile fiber. It has the advantages of high strength, good elasticity, good wear resistance and practicality, but its hygroscopicity and wearability The performance is poor. At present, for polyester, polyester cotton or polyester viscose fabrics with higher requirements, alkali weight reduction treatment is required. [0003] In the dyeing process, polyester is usually dyed with acid dyes, and the alkali reduction and dyeing are carried out in two baths. It takes a long time, and the alkali reduction is under alkaline conditions. Insufficient washing will leave a small amount of alkali on the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/16D06P1/642D06P1/651D06P1/667D06P1/673D06P1/52D06P1/00D06P3/54D06P5/02
CPCD06P1/16D06P1/6426D06P1/65125D06P1/667D06P1/67366D06P1/67341D06P1/5271D06P1/65131D06P1/6735D06P1/0032D06P3/54D06P5/02
Inventor 吴岳平
Owner 嘉兴市中威印染股份有限公司