Dyeing and finishing process for modal fabric

A fabric and process technology, applied in the field of dyeing and finishing of modal fabrics, can solve problems such as affecting the brightness and aesthetics of dyed fabrics, poor dyeing effect of natural dyes, destroying the ecological environment, etc., and improving the dyeing rate and color fixing rate. , The effect of short time and avoiding environmental pollution

Inactive Publication Date: 2015-10-14
TAICANG CHENGLE CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the dyeing process of modal, in order to reduce environmental pollution, the use of natural dyes is currently being studied, but natural dyes usually need to be dyed at a lower temperature, and the dyeing effect of natural dyes is poor, and the dyed fabrics have low color fastness. Low, in order to improve the color fixation, a large amount of soda ash and inorganic salts are usually added in the dyeing process, which brings great difficulties to the treatment of printing and dyeing wastewater with high salt content, such as direct discharge will destroy the ecological environment, resulting in soil salinity At the same time, natural dyes usually use some heavy metal ions as mordants, which do not meet the requirements of current ecological textiles, and the shade of fabrics after heavy metal ions mordant dyeing mostly becomes dim, affecting the brightness and aesthetics of dyed fabrics
In order to reduce the dyeing difficulty of the subsequent dyeing process, the fiber fabric usually needs to be pretreated before dyeing, but the current pretreatment basically uses alkaline solutions such as hydrosulfite and sodium carbonate for high temperature pretreatment, which will cause less damage to the fiber. Big

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A dyeing and finishing process for modal fabrics, comprising the following steps:

[0039] (1) Pretreatment: Pretreatment of modal fabrics, specifically: use urea 1g / L, phosphorus-free degreasing agent TF-104M 4.5 g / L, scouring agent 1 g / L, 30% hydrogen peroxide 8 g / L, Medium-temperature desizing enzyme BF-7658 4 g / L, ultrasonic treatment for 1 min in an ultrasonic water bath at 40°C, bath ratio 30:1, ultrasonic frequency 45 Hz, re-inject clean water for 2 washes after treatment, and then dry ;

[0040] (2) Pre-setting: Pre-setting the modal fabric, adding heat-resistant yellowing agent FK-161 8 g / L when setting, the setting temperature is 150°C, the speed is 20m / min, and the overfeed is 5%;

[0041] (3) Modification treatment: Put the shaped modal fabric in a water bath for modification treatment, 2,3-epoxypropyltrimethylammonium chloride 20 g / L, sodium hydroxide 8 g / L, ethanol 20 g / L, chitosan 3 g / L, liquor ratio 50:1, modified treatment at 50°C for 60 minutes, afte...

Embodiment 2

[0054] A dyeing and finishing process for modal fabrics, comprising the following steps:

[0055] (1) Pretreatment: Pretreatment of modal fabrics, specifically: urea 1.2g / L, phosphorus-free degreasing agent TF-104M 5 g / L, scouring agent 1.2 g / L, 30% hydrogen peroxide 9 g / L , medium-temperature desizing enzyme BF-7658 5 g / L, ultrasonic treatment for 1.5 min in an ultrasonic water bath at 40 °C, bath ratio 30:1, ultrasonic frequency 45 Hz, re-inject clean water for 2 washes after treatment, and then dry Dry;

[0056] (2) Pre-setting: Pre-setting the modal fabric, adding heat-resistant yellowing agent FK-161 9 g / L when setting, the setting temperature is 155°C, the speed is 25m / min, and the overfeed is 8%;

[0057] (3) Modification treatment: Put the shaped modal fabric in a water bath for modification treatment, 2,3-epoxypropyltrimethylammonium chloride 25 g / L, sodium hydroxide 9 g / L, ethanol 25g / L, chitosan 4 g / L, liquor ratio 50:1, modified treatment at 50°C for 70min, after...

Embodiment 3

[0070] A dyeing and finishing process for modal fabrics, comprising the following steps:

[0071] (1) Pretreatment: Pretreatment of modal fabrics, specifically: urea 1.5g / L, phosphorus-free degreasing agent TF-104M 5.5 g / L, scouring agent 1.5 g / L, 30% hydrogen peroxide 10 g / L , medium-temperature desizing enzyme BF-7658 6 g / L, ultrasonic treatment was carried out in an ultrasonic water bath at 40°C for 2 min, the bath ratio was 30:1, and the ultrasonic frequency was 45 Hz. Dry;

[0072] (2) Pre-setting: Pre-setting the modal fabric, adding heat-resistant yellowing agent FK-161 10 g / L when setting, the setting temperature is 160°C, the speed is 30m / min, and the overfeed is 10%;

[0073](3) Modification treatment: put the shaped modal fabric in a water bath for modification treatment, 2,3-epoxypropyltrimethylammonium chloride 30 g / L, sodium hydroxide 10 g / L, ethanol 30 g / L, chitosan 5 g / L, bath ratio 50:1, modified treatment at 50°C for 80 minutes, after the treatment, re-inje...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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PUM

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Abstract

The invention discloses a dyeing and finishing process for modal fabric. The process comprises the procedures of pretreatment, pre-setting, modification treatment, dyeing, soaping, fixation, after-finishing, drying, sizing, calendering and rolling. According to the invention, pretreatment is carried out by adopting ultrasonic wave, and a step of modification treatment is added; in the dyeing procedure, a base substituent SA is used, use of a large quantity of alkaline substances and inorganic salt is avoided, nature dye is adopted, and colophony powder is added as a fixing agent, so that the color fixing effect is enhanced, environmental pollution is avoided, and the requirement of green environmental protection is met; furthermore, montmorillonoid is adopted to carry out modification treatment and flame retardant treatment on the fabric, so that the flame retardancy of the fabric is high. According to the invention, a yellowing-resisting reagent is used in the procedures of pre-setting, sizing and after-finishing, so that the final fabric cannot become yellow easily.

Description

technical field [0001] The invention relates to a dyeing and finishing process of modal fabrics. Background technique [0002] Fiber is divided into chemical fiber and natural fiber. Natural fiber refers to the fiber that exists and grows in nature and has textile value. Chemical fiber is made of natural polymer compound or artificially synthesized polymer compound. Fibers with textile properties produced by silk and post-treatment processes. Chemical fibers have the advantages of light resistance, wear resistance, easy washing and drying, no mildew, no moths, etc., and are widely used in the manufacture of clothing fabrics, filter cloths, conveyor belts, hoses, ropes, fishing nets, electrical insulation threads, medical sutures , tire cord and parachute etc. [0003] Modal is a man-made chemical fiber. Modal fiber meets the requirements of the ECO-TEX standard, is harmless to physiology and is biodegradable. It has special advantages for textiles in direct contact with t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M13/463D06M11/79D06M13/144D06M15/03D06M13/207D06M11/55D06M11/76D06M16/00D06M11/50D06M13/432D06P5/08D06P5/10D06P5/04D06P1/44D06P1/673D06P1/46D06L1/16D06C15/00D06C7/02D06M101/06
Inventor 陈秀珍
Owner TAICANG CHENGLE CHEM FIBER
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