Printing and dyeing process of cotton wire radiation protection fabric

Cotton wire fabrics have the function of anti-electromagnetic radiation and anti-static. They can be used as work clothes fabrics for workers in the field of strong radiation and flammable and explosive gas, which can play a good role in protection and reduce unsafe factors.

This article describes the cotton wire fabric warp are 19.7, 18.4, 14.8, 11.8, 9.8, 7.4 and 5.9tex single yarn, strands of carded or combed conventional cotton yarn; weft yarn is containing 300 series nickel-chromium stainless steel wire package Core Yarn, line density 40D, 58D, 70D and 75D. Cotton wire core-spun yarn or a cotton yarn and a wire core-spun yarn interweave with warp-spun cotton yarn. The weave method includes plain weave, poplin, and twill. Among them, the metal content of the fabric is 3% to 5%.

Cotton wire dyeing and printing process: greige cloth inspection → turn cloth printing head → peeling and stretching → singeing → desizing → enzymatic treatment → tentering → whitening → mercerizing (dark dyeing) → dyeing → soft tenter → Wash → Dry → Tenter → Preshrink → Roll.

Gray cloth inspection According to customer's standard or U.S. quarter system standard, dyed dark grey fabrics mainly inspect rovings, cross bars, buckles, strips, and thin roads. When dyeing gray, brown, green, it is necessary to inspect gray fabrics with no neps. Dyeing occurs when the fabric is dyed. When overhauling the grey fabric, the nep shall be repaired or picked to the opposite side, and the bleached blank, light color blank, and dark color blank shall be used exclusively for the special blank. The flash chromophores that are woven into a profiled yarn can only be used as white or bleach, cannot be dyed, and in particular cannot be dyed dark.

The amount of batching and binning of the cloth-stitching printing cloth must meet the requirements for the amount of blanks and the color-position. The printing requirements are clear and there is no printing, indicating the requirements for number, density, variety, specification, length and color position. The cloth must be neat, and the length of the cloth should be suitable. The sewing head is required to be flat, straight and flush. The needle density is 23 to 25 needles/cm, the two sides are encrypted 1.50n, and the tail length is 2 to 3cm. The sewing head cannot wrinkle and hiccup. Otherwise, the wrinkles on both sides of the sewing head will be seriously affected. product quality.

The stripping and tentering uses the two-finger stripper before the setting machine cloth to strip the cotton wire, and it can use cloth or needle. The cloth pulled out by the fabric has a relatively good appearance.

Singeing four-roller reverse bristles, two positive and two anti-singeing, intermediate blower cooling, first spray after the roll cylinder fire, fabric from the crater about 1.5cm, singeing machine speed 60 ~ 100m/min.

Enzymatic desizing was carried out using a desizing enzyme XingDa2000 dosage of 5 ~ 10g / L, penetrant JFC dosage of 5 ~ 10g / L, 60 ~ 65 °C treatment 60min, vehicle speed 60 ~ 100m/min. The speed and time for desizing are generally based on the number of fabrics per cylinder and the number of passes processed.

Enzyme treatment process prescription / (g / L): net cotton enzyme 呒 tin Xinlong: 20 ~ 30; stabilizer: 5 ~ 10; penetrating agent: 5 ~ 10; hydrogen peroxide water: 3 ~ 6; temperature / °C: 95 ~ 98 ; time / h: 2 ~ 4; bath ratio: 1.3.

Stretching wet buns can be carried out on a tenter or a setting machine, and the spread of the cloth is better than that of the tenter tenter cloth. At the same time, the web is peeled before the fabric is stretched. The tenter temperature is 150-180°C, the speed is 20-30m/min, overfeed 1.5%-2%, time 25-45s.

Adding white can be carried out on a tenter or setting machine according to the customer's specifications. Special white fluorescent whitening agent MST15 ~ 25g / L; medium brightness can be used fluorescent whitening agent RSB150%, the amount of 2 ~ 8g / L. In addition, can be used in the long car 0.01 ~ 0.1g / L paint PPO blue or paint 8301 blue as a coloring agent to adjust the fabric blue light, with 0.05% ~ 0.5% (owf) coating FFRN Qinglian or 8701 Qinglian 0.01 ~ 0.12g /L adjusts the fabric purple light. If customers have higher requirements for whiteness, whitening is generally performed in the dyeing tank using 0.05% to 0.5% (ovf) fluorescent whitening agent VBL. Fluorescent whitening agent is added in two batches. In the first pass, 60% fluorescent whitening agent VBL is added at the beginning, dissolved in boiling water, stirred with a circulating pump, and then driven; the remaining fluorescent brightener is added at the end of the first lane. Then wash on the washing machine.

Silk (when dyed dark)

When dark products are processed, the mercerization process is required, which can be performed on a cloth mercerizing machine. Before and after the rolling grooves are four dip two rolling, the former caustic soda concentration 240 ~ 260g/L, the latter caustic soda concentration 220 ~ 240g/L , Processing time 30 ~ 60s, speed 30 ~ 40m/min, fabric expansion, light alkali spray, vacuum alkali absorption.

Light dyeing is usually carried out on long trolleys, using K-type, KN-type, X-type and M-type reactive dyes, penetrant JFC 2-5 g/L, 10% sodium alginate 10-20 g/L, baking soda Or soda 10 ~ 20g/L, urea 5 ~ 50g/L.

Process flow: padding dyeing solution, infrared pre-baking (first pre-oven 80°C, second pre-oven 90°C, third pre-oven 100°C, time 3min)→baking (160～180°C, 3min)

Dark dyeing is generally carried out in a dyeing tank, and X-type, K-type, KN-type, and M-type reactive dyes can be used.

Process: After mercerizing, cold water is poured into the cylinder, pickled (2 lanes, glacial acetic acid 5 to 10 g/L, 60°C), cold water wash 2 lanes, and dyeing [1st, 2nd, 3rd and 4th lanes added 30% respectively, 25%, 25% and 20% reactive dyes; No. 5, 6, 7, and 8 respectively, 25 to 30 g/L (25% of the total amount) of Sangweng powder, and dyeing No. 9, 10, 11, and 12 respectively. Add soda ash 20-25g/L (25% of the total amount), and adjust the color of the sample] → Cold water wash 2 → Boiling water wash 2 Blunt base 1～2g/L, penetrant 5～8g/L) → Soaping 4 lanes → boiling water washing 4-6 lanes → spray 2 lanes → pickling 2 lanes (glacial acetic acid 0.5g/L, added in 2 batches) → water spray cloth soft tenter stretch soft tenter available common softener or silicon-containing Softener, the amount of 20 ~ 30g / L.

When washing customers request special finishing (such as washing finishing), can be carried out in the drum type washing machine. Once washed, it can be loaded with 5 to 10 chemical fiber net bags. Each net bag is loaded with 1-2 pieces of cotton wire cloth.

Washing process: automatic transfusing at room temperature for 10 minutes → inching and rotating for 30 minutes → dehydration → drying → cold blasting for 15 minutes

After washing, the cotton wire can obtain a unique concave and convex feel, full and comfortable. Washing can also be heated and washed at a constant temperature.

Dry tenter is carried out on a tenter or setting machine. The finished product is required to reach the finished web. The temperature is controlled at 60 to 100°C and the speed is 15 to 20 m/min.

The pre-shrinking needs to control the pressure of the pre-shrinking machine and the pressure of the press roller from top to bottom to ensure uniform pre-shrinkage. The cotton wire is sprayed into the rubber blanket before, and the steam pressure is 20 kPa. The compression pressure of the pre-shrinking machine is 0.4 MPa and the shrinkage is 1% to 3%.