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Short-flow pre-treatment method for pure cotton heavy fabrics

A heavy-duty fabric, short-process technology, applied in fiber processing, plant fibers, textiles and papermaking, etc., can solve the problems of high strength loss of pure cotton heavy fabrics, reduced cellulose molecular weight, and difficulty in enlarging the reaction device, and achieve mechanical properties. Excellent, good mechanical properties, the effect of improving the feel

Pending Publication Date: 2019-04-05
ZHEJIANG IND POLYTECHNIC COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] ZL200310106023.2 discloses a kind of cotton canvas woven fabric padding biological enzyme desizing and scouring, and then oxygen bleaching. Although the process of this method is relatively clean for the treatment of impurities, it has many steps, high energy consumption and high cost. The molecular weight of the cellulose is greatly reduced, so that the strength of pure cotton heavy fabrics is greatly lost, which affects the popularization and application of this technology
Patents ZL201210486824.5, ZL201310328443.9, and ZL201310199680.X respectively announced a low-temperature pretreatment method for enzymatic oxygen one-bath cotton fabrics. Completely; patent ZL201410398629.6 discloses an ultrasonic-assisted low-temperature descouring and bleaching one-bath pretreatment method for cotton fabrics. Cotton fabrics are subjected to descouring and bleaching one-bath pretreatment under the action of ultrasonic waves. The ultrasonic power, processing temperature and processing time can be controlled to make Cotton fabrics achieve better desizing, scouring and bleaching effects, but ultrasonic treatment consumes a lot of energy, and the device is not easy to scale up, so it is difficult to achieve industrial application
ZL201510718580.2 announced an ozone-ultrasonic synergistic textile scouring, bleaching and dyeing method and device to replace the alkali-oxygen pretreatment process of caustic soda and hydrogen peroxide, but this process still needs to be used in combination with chemical reagents to achieve the treatment effect, and there are also reactions The device is not easy to enlarge, and it is difficult to apply industrially

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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  • Short-flow pre-treatment method for pure cotton heavy fabrics
  • Short-flow pre-treatment method for pure cotton heavy fabrics
  • Short-flow pre-treatment method for pure cotton heavy fabrics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Pure cotton thick plain weave gray cloth (C12×12 52×50 1 / 1 63"197g / m 2 ) scouring and bleaching liquid padding, its scouring and bleaching liquid consists of: scouring agent 2g / L, caustic soda 10g / L, hydrogen peroxide (35%) 4g / L, sodium silicate 4g / L, fatty alcohol polyoxyethylene ether 2g / L , The excess rolling rate is 80%, the steaming temperature is 95°C, and the steaming time is 20min. After steaming, wash with hot water first, then cold water. The pure cotton heavy fabrics washed with steam and water are mercerized with 130g / L sodium hydroxide as a low-alkali solution, and finally fully washed and dried.

Embodiment 2

[0036] Singeing pure cotton thick twill yarn card gray fabric (C10×10 74×44 3 / 1↖43" / 57" 283g / m 2 ) scouring and bleaching liquid padding, its scouring and bleaching liquid consists of: scouring agent 10g / L, caustic soda 8g / L, hydrogen peroxide (28%) 12g / L, sodium silicate 5g / L, fatty alcohol polyoxyethylene ether 4g / L , The excess rolling rate is 100%, and the cold stacking time is 0.5h. The piled pure cotton heavy fabrics were steamed at a steaming temperature of 98° C. and a steaming time of 30 minutes. After steaming, wash with hot water first, then cold water. The pure cotton heavy fabrics after steam washing are lightly bleached with dilute hydrogen peroxide solution. The time is 3 minutes. After light bleaching, wash in cold water. The pure cotton heavy fabric after light bleaching is mercerized with a concentration of 140g / L sodium hydroxide as a low-alkali solution, and finally fully washed with water and dried.

Embodiment 3

[0038] Singeing pure cotton thick twill thread card gray fabric (C40 / 2×40 / 2 141×76 2 / 2↗43" / 57" 260g / m 2 ) scouring and bleaching liquid padding, its scouring and bleaching liquid consists of: scouring agent 15g / L, caustic soda 2g / L, hydrogen peroxide (30%) 15g / L, oxygen bleaching stabilizer sodium silicate 5g / L, fatty alcohol polyoxyethylene Ether 6g / L, excess rate 100%, cold pile time 1h. The piled pure cotton heavy fabrics were steamed at a steaming temperature of 100° C. and a steaming time of 60 minutes. After steaming, wash with hot water first, then cold water. The pure cotton heavy fabric after steam washing is mercerized with a concentration of 140g / L sodium hydroxide as a low-alkali solution, and finally fully washed and dried.

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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Abstract

The invention discloses a short-flow pre-treatment method for pure cotton heavy fabrics and belongs to the technical field of dyeing and finishing pre-treatment. The short-process pre-treatment methodfor pure cotton heavy fabrics comprises the steps of padding a singed pure cotton heavy gray fabric with scouring and bleaching liquid, then piling up the fabric at room temperature, executing steaming and washing, executing slight rinsing with a dilute aqueous solution of hydrogen peroxide, finally executing low-alkali mercerizing, and then executing full washing to complete the pure cotton heavy fabric pre-treatment process. The process is good in treatment effect, has the advantages of small fabric strength damage, high quality, soft handfeel, high hair effect and good glossiness, also creates the high color yield condition for subsequent dyeing and printing processing and is simple in technological operation and strong in controllability. In addition, the treatment wastewater, chemical agent use amount and energy consumption of the process are far lower than those of a traditional strong alkali scouring process, and the burden of sewage treatment of enterprises is greatly reduced.

Description

【Technical field】 [0001] The invention relates to a pretreatment method for pure cotton heavy fabrics. 【Background technique】 [0002] Pure cotton heavy dyed fabrics are mostly used as high-end decorative fabrics, clothing fabrics and tourism product fabrics, etc. It is one of the fashion materials with market competitiveness and is favored by consumers. However, due to its organizational structure, pure cotton heavy fabrics contain high impurities, and require high pre-treatment processes such as desizing and scouring, which must be strictly controlled to meet the application requirements. [0003] At present, the pretreatment of heavy pure cotton fabrics generally uses a three-step process, that is, desizing, scouring and then bleaching, or a two-step process, that is, desizing and scouring, and then bleaching. Due to the special organizational structure of thick pure cotton fabrics, if a large amount of impurities such as cotton seed shells mixed in the fabric core struc...

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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IPC IPC(8): D06L4/13D06L4/12D06M11/38D06M101/06
CPCD06L4/12D06L4/13D06M11/38D06M2101/06
Inventor 钟少锋全琼瑛
Owner ZHEJIANG IND POLYTECHNIC COLLEGE
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