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Digital printing method for increasing color depth of cotton fabric printing pattern

A digital printing and cotton fabric technology, applied in dyeing, textiles and papermaking, etc., can solve the problems of edge bleeding of patterns and insufficient color depth of patterns printed with paste, and achieve low water holding capacity and strong wet friction The effect of good degree and high viscosity

Inactive Publication Date: 2019-01-18
XI'AN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a digital printing method for increasing the printing color depth of cotton fabrics, which solves the problems of insufficient surface color depth and edge bleeding of patterns printed with paste in existing digital printing

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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  • Digital printing method for increasing color depth of cotton fabric printing pattern
  • Digital printing method for increasing color depth of cotton fabric printing pattern
  • Digital printing method for increasing color depth of cotton fabric printing pattern

Examples

Experimental program
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Effect test

preparation example Construction

[0031] The preparation process of digital printing pretreatment sizing agent is as follows: first, add the digital printing paste into distilled water to fully soak, stir at high speed to form a paste, and the stirring speed is 1200-1500r / min, then add alkali agent and oxidant, stir evenly, measure the viscosity, Keep the viscosity not lower than 10,000mPa, and you can get an environmentally friendly and degradable digital printing pretreatment sizing agent.

[0032] Step 2, inkjet printing:

[0033] 2.1 Ink-jet printing the cotton fabric after the pretreatment in step 1, and drying at a temperature of 90-100°C;

[0034] 2.2 Steam the dried printed fabric under saturated steam for 5-10 minutes, then wash in cold water, soap, hot water, and dry in sequence to complete the printing of cotton fabric.

[0035] Among them, cold water washing refers to cleaning with normal temperature water; soap washing liquid is soap powder aqueous solution, soap powder is soap powder for industr...

Embodiment 1

[0042] Step 1, weigh according to mass percentage: carboxypolyvinyl alcohol 4%, anti-staining salt S 1%, distilled water 95%, add polyvinyl alcohol to distilled water and fully soak, stir at a high speed to form a paste, the stirring speed is 1200r / min, and then Add anti-dyeing salt S, stir evenly, measure the viscosity, keep the viscosity not lower than 10000mPa, and then get an environmentally friendly and degradable digital printing pretreatment sizing agent.

[0043] Step 2, pre-printing treatment of cotton fabric:

[0044] The digital printing pretreatment sizing agent is scraped on one side of the cotton fabric, and the amount of the digital printing pretreatment sizing agent is 1% of the mass of the cotton fabric; then the cotton fabric after the sizing agent is scraped and dried at a temperature of 90 ° C.

[0045] Step 3, inkjet printing:

[0046] 3.1 Inkjet printing the cotton fabric after the pretreatment in step 1, and drying at a temperature of 90°C;

[0047] 3....

Embodiment 2

[0049] Step 1, weigh according to mass percentage: carboxymethyl polysaccharide polymer 5%, anti-staining salt S 0.2%, sodium hydroxide 2%, distilled water 92.8%, add carboxymethyl polysaccharide polymer to distilled water to fully soak and stir at high speed To form a paste, the stirring speed is 1250r / min, then add sodium hydroxide and anti-staining salt S, stir evenly, measure the viscosity, keep the viscosity not lower than 10000mPa, and obtain an environmentally friendly and degradable digital printing pretreatment sizing agent.

[0050] Step 2, pre-printing treatment of cotton fabric:

[0051] The digital printing pretreatment sizing agent is scraped on one side of the cotton fabric, and the amount of the digital printing pretreatment sizing agent is 2% of the quality of the cotton fabric; then the cotton fabric after the scraping sizing agent is dried at a temperature of 92 ° C.

[0052] Step 3, inkjet printing:

[0053] 3.1 Inkjet printing the cotton fabric after the ...

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 digital printing method for increasing the color depth of a cotton fabric printing pattern. The digital printing method comprises the following steps: firstly, pretreating acotton fabric by using a digital printing pretreatment sizing agent containing a carboxylated polysaccharide compound or a carboxylated polyol compound, and secondly, carrying out ink jetting printingon the cotton fabric after pretreatment. As the carboxyl polysaccharide (polyol) compound is adopted as a digital printing paste for preteating the cotton fabric, and the carboxyl polysaccharide (polyol) compound is high in viscosity, good in flowability and relatively poor in water retention, a dye can be well combined with a fiber, and the fabric surface is in a deep color; since the dye and the fiber are in chemical bonding, the friction fastness of the cotton fabric, particularly wet friction fastness, can be improved, so that an effect of increasing the depth of a digital printing coloris achieved; meanwhile, the addition of urea is avoided, so that the influence on the environment caused by ammonia nitrogen of the urea is reduced.

Description

technical field [0001] The invention belongs to the technical field of digital printing, and in particular relates to a digital printing method for increasing the printing color depth of cotton fabrics. Background technique [0002] Sodium alginate and other pastes are often used as thickeners in cellulose fiber printing to transfer dyes and ensure the clarity of printed patterns. Due to the high water holding capacity and low structural viscosity of sodium alginate, when used in digital printing, the printed pattern will have high penetration, resulting in light surface color and pattern edge bleeding, which will reduce the clarity of digital printing. , can not achieve the realistic effect of digital printing. Therefore, it is necessary to study new pastes that can improve the effect of digital printing, so as to improve the effect of digital printing surface color depth and pattern clarity. Currently, the pastes used to improve the printing effect of digital printing mai...

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): D06P3/60D06P1/48D06P1/50D06P1/52D06P5/30
CPCD06P1/48D06P1/50D06P1/5228D06P3/60D06P5/30
Inventor 谭艳君李文燕张帅
Owner XI'AN POLYTECHNIC UNIVERSITY
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