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

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

Example Embodiment

[0033] Example 1:

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

Example Embodiment

[0035] Example 2:

[0036] Pure cotton heavy twill grey fabric after singeing (C10×10 74×44 3 / 1↖43" / 57"283g / m 2 ) Scouring and bleaching liquid padding, the composition of the scouring and bleaching liquid is: scouring agent 10g / L, caustic soda 8g / L, hydrogen peroxide (28%) 12g / L, sodium silicate 5g / L, fatty alcohol polyoxyethylene ether 4g / L , The rolling margin is 100%, and the cold pile time is 0.5h. Steam the stacked pure cotton heavy fabric at a temperature of 98°C and a steaming time of 30 minutes. After steaming, wash in hot water first, then cold water. The thick and heavy cotton fabrics after being steamed and washed are lightly bleached with a dilute hydrogen peroxide solution. The composition of the dilute hydrogen peroxide solution is: hydrogen peroxide concentration 2g / L, oxygen bleaching stabilizer 4g / L, solution pH value 10, bleach temperature 95℃, bleaching Time 3min. After light bleaching, wash in cold water. The lightly bleached thick cotton fabric is mercer...

Example Embodiment

[0037] Example 3:

[0038] Singeed pure cotton heavy twill line card grey cloth (C40 / 2×40 / 2 141×76 2 / 2↗43" / 57"260g / m 2 ) Scouring and bleaching liquid padding, the composition of the scouring and bleaching liquid is: 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, rolling margin is 100%, cold stacking time is 1h. Steam the stacked pure cotton heavy fabric with a steaming temperature of 100°C and a steaming time of 60min. After steaming, wash in hot water first, then cold water. After steaming and washing, the thick cotton fabrics are mercerized with a concentration of 140g / L sodium hydroxide solution and low-alkali, 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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