CN114232366A - Digital printing process - Google Patents
Digital printing process Download PDFInfo
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- CN114232366A CN114232366A CN202111573648.4A CN202111573648A CN114232366A CN 114232366 A CN114232366 A CN 114232366A CN 202111573648 A CN202111573648 A CN 202111573648A CN 114232366 A CN114232366 A CN 114232366A
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- grey cloth
- cloth
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- 238000007639 printing Methods 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 36
- 230000008569 process Effects 0.000 title claims abstract description 29
- 239000004744 fabric Substances 0.000 claims abstract description 116
- 239000002002 slurry Substances 0.000 claims abstract description 19
- 238000005406 washing Methods 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 16
- 238000003756 stirring Methods 0.000 claims abstract description 16
- 239000000985 reactive dye Substances 0.000 claims abstract description 15
- 238000004537 pulping Methods 0.000 claims abstract description 13
- 238000010025 steaming Methods 0.000 claims abstract description 12
- 229920000742 Cotton Polymers 0.000 claims abstract description 6
- 241000168254 Siro Species 0.000 claims abstract description 6
- 239000000975 dye Substances 0.000 claims abstract description 6
- 229920000297 Rayon Polymers 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 239000002964 rayon Substances 0.000 claims abstract description 5
- 238000009987 spinning Methods 0.000 claims abstract description 5
- 238000004140 cleaning Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 40
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 30
- 238000001035 drying Methods 0.000 claims description 20
- 238000004513 sizing Methods 0.000 claims description 17
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 15
- 239000004202 carbamide Substances 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 15
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 15
- 235000011152 sodium sulphate Nutrition 0.000 claims description 15
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 11
- 238000003825 pressing Methods 0.000 claims description 11
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims description 10
- 235000010413 sodium alginate Nutrition 0.000 claims description 10
- 229940005550 sodium alginate Drugs 0.000 claims description 10
- 239000000661 sodium alginate Substances 0.000 claims description 10
- 230000001680 brushing effect Effects 0.000 claims description 9
- 239000012752 auxiliary agent Substances 0.000 claims description 8
- 229920002472 Starch Polymers 0.000 claims description 7
- 238000007641 inkjet printing Methods 0.000 claims description 7
- 238000007689 inspection Methods 0.000 claims description 7
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 7
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 7
- 235000019698 starch Nutrition 0.000 claims description 7
- 239000008107 starch Substances 0.000 claims description 7
- 238000005303 weighing Methods 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 238000007598 dipping method Methods 0.000 claims description 6
- 230000007547 defect Effects 0.000 claims description 5
- 244000144992 flock Species 0.000 claims description 5
- 239000000428 dust Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 238000007873 sieving Methods 0.000 claims description 4
- 229940080313 sodium starch Drugs 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 3
- 238000010009 beating Methods 0.000 claims description 3
- 238000009960 carding Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 238000007602 hot air drying Methods 0.000 claims description 3
- 235000011837 pasties Nutrition 0.000 claims description 3
- 229940032147 starch Drugs 0.000 claims description 3
- 238000004043 dyeing Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 6
- 230000008859 change Effects 0.000 abstract description 3
- 239000004753 textile Substances 0.000 abstract description 3
- 238000000354 decomposition reaction Methods 0.000 abstract description 2
- 238000002347 injection Methods 0.000 abstract description 2
- 239000007924 injection Substances 0.000 abstract description 2
- 230000000737 periodic effect Effects 0.000 abstract description 2
- 238000012216 screening Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 4
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- 239000012535 impurity Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 206010020112 Hirsutism Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
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- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000000271 synthetic detergent Substances 0.000 description 1
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- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/30—Ink jet printing
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B19/00—Treatment of textile materials by liquids, gases or vapours, not provided for in groups D06B1/00 - D06B17/00
- D06B19/0005—Fixing of chemicals, e.g. dyestuffs, on textile materials
- D06B19/0029—Fixing of chemicals, e.g. dyestuffs, on textile materials by steam
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B23/00—Component parts, details, or accessories of apparatus or machines, specially adapted for the treating of textile materials, not restricted to a particular kind of apparatus, provided for in groups D06B1/00 - D06B21/00
- D06B23/20—Arrangements of apparatus for treating processing-liquids, -gases or -vapours, e.g. purification, filtration or distillation
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B3/00—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating
- D06B3/10—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics
- D06B3/18—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics combined with squeezing, e.g. in padding machines
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/51—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof
- D06M11/55—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof with sulfur trioxide; with sulfuric acid or thiosulfuric acid or their salts
- D06M11/56—Sulfates or thiosulfates other than of elements of Groups 3 or 13 of the Periodic Table
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/73—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof
- D06M11/76—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof with carbon oxides or carbonates
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
- D06M13/402—Amides imides, sulfamic acids
- D06M13/432—Urea, thiourea or derivatives thereof, e.g. biurets; Urea-inclusion compounds; Dicyanamides; Carbodiimides; Guanidines, e.g. dicyandiamides
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
- D06M15/03—Polysaccharides or derivatives thereof
- D06M15/11—Starch or derivatives thereof
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
- D06M15/03—Polysaccharides or derivatives thereof
- D06M15/13—Alginic acid or derivatives thereof
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/58—Material containing hydroxyl groups
- D06P3/60—Natural or regenerated cellulose
- D06P3/66—Natural or regenerated cellulose using reactive dyes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/20—Physical treatments affecting dyeing, e.g. ultrasonic or electric
- D06P5/2066—Thermic treatments of textile materials
- D06P5/2077—Thermic treatments of textile materials after dyeing
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/04—Vegetal fibres
- D06M2101/06—Vegetal fibres cellulosic
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/40—Reduced friction resistance, lubricant properties; Sizing compositions
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Coloring (AREA)
Abstract
The invention discloses a digital printing process, relates to textile printing and dyeing, and aims to solve the problem that when an active dye is printed in a direct injection mode through a digital printing machine, the washing resistance is poor, and the technical scheme is as follows: the method comprises the following specific steps: s1 inspecting grey cloth, selecting a fabric woven by rayon or combed cotton material and yarns prepared by a siro spinning process as the grey cloth, and visually inspecting the surface of the grey cloth to have no obvious flaws; s2, performing previous finishing, cleaning the cloth cover after unwinding the grey cloth, and then performing weft straightening on the grey cloth; s3 pulping, preparing slurry, continuously stirring the slurry, and then screening. The invention carries out steaming in a circulating mode, can improve the color fastness of printing through multiple times of steaming, avoids the problem of decomposition of the reactive dye caused by long-time heating, and can further improve the color fixing effect of the reactive dye along with the periodic change of temperature when circularly entering and exiting the steam box.
Description
Technical Field
The invention relates to textile printing and dyeing, in particular to a digital printing process.
Background
With the rapid development of economy, the mainstream consumption of the clothes gradually tends to be personalized and fashionable, and the clothes have novel and unique patterns and rich and diverse changes. Printing products of printing and dyeing processing factories are more diversified, and the appearance and development of digital printing meet the production modes of small batch and multiple varieties. However, digital printing is different from screen printing, and the fabric must be pretreated before printing, so that the ink can be prevented from permeating on the fabric by spray printing, due conditions can be provided for color development and fixation of the ink, and the adsorption and fixation of the fabric to the ink can be improved.
Along with the development of printing and dyeing industry, in order to reduce the influence of waste water to the environment in the printing and dyeing and finishing process, the adoption of reactive dyes is also increasingly popularized, and when the adoption of reactive dyes is printed in a direct injection mode through a digital printing machine, the washing resistance is poor, and after washing for many times, the condition of fading and ageing is easy to appear, thereby influencing the service life of the clothes cut by the printing fabric.
Therefore, a new solution is needed to solve this problem.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a digital printing process.
The technical purpose of the invention is realized by the following technical scheme: a digital printing process comprises the following specific steps:
s1 inspecting grey cloth, selecting a fabric woven by rayon or combed cotton material and yarns prepared by a siro spinning process as the grey cloth, and visually inspecting the surface of the grey cloth to have no obvious flaws;
s2, performing previous finishing, cleaning the cloth cover after unwinding the grey cloth, and then performing weft straightening on the grey cloth;
s3 pulping, preparing slurry, continuously stirring the slurry, and then filtering;
s4, sizing, namely adding sizing agents to the surfaces of two sides of the grey cloth in a double-sided padding sizing agent mode;
s5, performing ink-jet printing, namely printing according to a set pattern by adopting a reactive dye in a direct ink-jet printing mode;
s6, drying;
s7, steaming and fixing color, namely hanging the dried cloth on a cloth rack, and circularly and sequentially feeding the cloth into a steam box for steaming;
and S8 washing with water.
By adopting the technical scheme, in the process of gray fabric inspection, the dyeing rate and the color fastness of the reactive dye can be improved by selecting the material of the cotton rayon or the combed cotton, the yarn prepared by the siro spinning process has less hairiness on the surface of the yarn spun by the siro, so that the process of pretreatment on the fabric is reduced, the process of printing the gray fabric is shortened, the aim of saving energy is fulfilled, less flock or plush exists on the surface of the gray fabric, the precision of patterns in digital printing can be improved, the phenomenon of staining caused by the defects of plush and the like is avoided, the adhesion of the ink-jet dye can be improved by tighter weaving, and in the pulping and sizing process, the size can be more exquisite, so that the adhesion of the size to the gray fabric is improved, and the gray fabric is kept to have good flatness and smooth texture after being sized, when carrying out digital printing, improve the quality and the effect of stamp, and at the in-process of the ageing fixation to the decatize of circulation mode, through a lot of decatize, can improve the colour fastness of stamp, and avoid leading to the problem of reactive dye decomposition owing to be heated for a long time, and circulation business turn over steam ager, can further improve reactive dye's fixation effect along with the cycle change of temperature.
The invention is further configured to: the specific steps of the gray fabric inspection of S1 comprise:
s11 specification detection, namely detecting the width, the gram weight and the density of the gray fabric, flatly paving the gray fabric on a cloth inspecting machine, and visually detecting whether defects exist on the surface of the gray fabric;
s12, seam turning, namely seam turning is carried out on the grey cloth, and the part with the broken hole is sewn;
s13 brushing, reversely carding two sides of the grey cloth by a brushing roller, and collecting the carded dust and flock by a negative pressure fan.
Through adopting above-mentioned technical scheme, when grey cloth inspection, inspect the breadth, the gram weight and the density of grey cloth, can guarantee the stability of grey cloth, and carry out visual inspection on cloth inspection machine, can subdivide the fault on the grey cloth and handle, carry out the turn-over simultaneously to grey cloth and sew up, and carry out the seam head in the part in broken hole, thereby avoid leading to grey cloth to appear tearing the damaged condition of pulling because broken hole and steaming the in-process, avoid broken hole to influence the quality of stamp simultaneously, and avoid the waste of grey cloth.
The invention is further configured to: the specific steps of S2 front sorting include:
s21, weft straightening, namely, performing width finishing on the unwound grey cloth weft straightening machine subjected to brushing treatment;
s22 hot air drying, and heating the grey cloth by a hot air oven, wherein the drying temperature is 80-90 ℃, and the linear velocity is 5-10 m/min.
By adopting the technical scheme, the gray fabric is heated in a hot air drying mode after weft straightening, redundant moisture carried on the gray fabric can be removed, and the adhesion rate of slurry is improved when subsequent slurry dipping is convenient to perform, so that the adhesion of reactive dye to the gray fabric is improved in a digital printing process, and the gray fabric has good color fixing capability and color fastness.
The invention is further configured to: the specific steps of S3 pulping comprise:
s31, mixing, sequentially sieving and weighing the urea, the anhydrous sodium sulphate and the sodium alginate according to the mixture ratio, wherein the weight ratio is as follows:
7-10% of urea, 4.5% of anhydrous sodium sulphate, 3% of baking soda, 1% of sodium alginate, 62% of starch paste and the balance of water;
s32, mixing materials, namely weighing water according to the proportion, pouring the water into a beater, simultaneously adding urea and anhydrous sodium sulphate, stirring for 20min until the materials are completely dissolved and deepened, gradually adding sodium alginate and starch paste, and stirring and beating the materials to obtain a pasty mixture;
and S33 adding alkali, continuously stirring the mixture at constant temperature, adding the dissolved sodium bicarbonate solution, continuously stirring for 30min until the mixture is stirred to be fine, and pouring the mixture into a slurry tank of a sizing machine.
Through adopting above-mentioned technical scheme, with the mode of sieving weighing weigh materials such as urea, clot or other solid impurity in the material can be detached, thereby improve the precision of ratio, and add urea and anhydrous sodium sulphate when mixing simultaneously, can accelerate the dissolution of urea and anhydrous sodium sulphate, and at the in-process that the urea dissolves, through the synchronous dissolution of anhydrous sodium sulphate, accelerate the deepening of urea, improve work efficiency, progressively add sodium alginate or starch paste afterwards, the people of being convenient for control the thickness of adjusting the thick liquid, and add the baking soda after dissolving after mixing, can help improving the dyeing fixation effect of reactive dyes when inkjet printing.
The invention is further configured to: the S4 sizing method comprises the following specific steps:
s41, checking at regular time, observing the weft skew condition of the grey cloth at intervals, and adjusting the weft straightening machine;
s42, dipping, pressing the gray fabric subjected to weft straightening into a size box, and pressing size on the surface of the gray fabric by a pressing roller;
s43, drying, namely drying the soaked grey cloth through a steam drying cylinder.
By adopting the technical scheme, the skewness of the weft of the grey cloth is periodically checked, so that the sized grey cloth has good finishing degree when being dried and wound through the slurry dipping, the finishing degree of subsequent printing is convenient, meanwhile, in the slurry dipping process, redundant slurry can be rolled out in a compression roller pressing mode, and simultaneously, the slurry can also permeate into the grey cloth under the pressing action force, so that the dyeing rate and the color fastness of the grey cloth after the subsequent printing are improved.
The invention is further configured to: the specific step of S32 mixing further comprises: adding an antistatic auxiliary agent into clear water, wherein the bath ratio is 1: 10.
By adopting the technical scheme, the antistatic auxiliary agent is added into the clear water in the material mixing step, so that the generation of static electricity can be reduced through the antistatic tissue during the completion of the slurry soaking and drying of the grey cloth, thereby reducing the adsorption of the surface flock dust of the grey cloth in the printing process and improving the printing quality.
The invention is further configured to: the step of S3 pulping further comprises: when the proportion of clear water is weighed, the anhydrous sodium sulphate is dissolved by the clear water with the water temperature of 15-17 ℃, and the slurry is filtered by a 80-90 mesh net.
By adopting the technical scheme, the clean water for pulping is at 15-17 ℃, the anhydrous sodium sulphate and the urea can be properly dissolved, the pulp is more uniform, and a 80-90 mesh net is selected for filtering, so that the undissolved impurities in the pulp can be removed, and the problem that the quality of the pulp is influenced by crystallization due to improper temperature is known.
The invention is further configured to: the specific step of S8 water washing comprises:
s81 rinsing with warm water, rinsing with warm water in an overflow water washing mode, and rinsing to remove redundant dyes on the surface of the grey cloth;
and S82, after finishing, adding a softening auxiliary agent into clear water for finishing after rinsing, and drying by hot air circulation after rinsing.
Through adopting above-mentioned technical scheme to warm water rinses, gets rid of unnecessary dyestuff, and adds soft auxiliary agent and arrange in order, realizes improving the compliance of printing surface fabric, has good feel, and replaces traditional process and need independently arrange in order and lead to a lot of washing to influence the colour fastness of printing surface fabric.
In conclusion, the invention has the following beneficial effects:
in the pulping and sizing process, the pulp is filtered and sieved, the pulp can be more fine and smooth, the adhesion of the pulp to the grey cloth is improved, the grey cloth is kept to have good flatness and smooth texture after sizing, when digital printing is carried out, the printing quality and effect are improved, and in the process of steaming and fixing, steaming is carried out in a circulating mode, steaming is carried out for multiple times, the color fastness of printing can be improved, the problem that the reactive dye is decomposed due to long-time heating is avoided, and the reactive dye is circularly fed into and discharged from a steam box, the color fixing effect of the reactive dye can be further improved along with the periodic change of temperature.
Detailed Description
The present invention will be described in detail with reference to examples.
A digital printing process comprises the following specific steps: s1 gray fabric inspection, wherein the gray fabric is woven by selecting a rayon yarn or a combed cotton material and a yarn made by a siro spinning process, the surface of the gray fabric is visually inspected to have no obvious flaws, and the specific steps of the step S1 gray fabric inspection comprise:
s11 specification detection, namely detecting the width, the gram weight and the density of the gray fabric, flatly paving the gray fabric on a cloth inspecting machine, and visually detecting whether defects exist on the surface of the gray fabric;
s12, seam turning, namely seam turning is carried out on the grey cloth, and the part with the broken hole is sewn;
s13 brushing, reversely carding two sides of the grey cloth by a brushing roller, and collecting the carded dust and flock by a negative pressure fan;
s2 front-pass finishing, namely unwinding the grey cloth, cleaning the cloth surface, and then finishing the grey cloth, wherein the S2 front-pass finishing comprises the following specific steps:
s21, weft straightening, namely, performing width finishing on the unwound grey cloth weft straightening machine subjected to brushing treatment;
s22, drying with hot air, and heating the grey cloth with a hot air oven at 80-90 ℃ at a linear speed of 5-10 m/min;
s3 pulping, preparing the pulp, continuously stirring the pulp, and then screening, wherein the pulping step S3 comprises the following specific steps:
s31, mixing, sequentially sieving and weighing the urea, the anhydrous sodium sulphate and the sodium alginate according to the mixture ratio, wherein the weight ratio is as follows:
7-10% of urea, 4.5% of anhydrous sodium sulphate, 3% of baking soda, 1% of sodium alginate, 62% of starch paste and the balance of water;
s32 mixing materials, firstly weighing clear water with the water temperature of 15-17 ℃ according to the proportion, pouring the clear water into a beater, adding an antistatic auxiliary agent into the clear water, adding urea and anhydrous sodium sulphate at the bath ratio of 1:10, stirring for 20min until the materials are completely dissolved and deepened, then gradually adding sodium alginate and starch paste, stirring and beating simultaneously to obtain a pasty mixture, and filtering the slurry by adopting a 80-90 mesh net;
s33, adding alkali, continuously stirring the mixture at constant temperature, adding the dissolved baking soda solution, continuously stirring for 30min until the mixture is stirred to be fine, and pouring the mixture into a slurry tank of a pulping machine;
s4, sizing, namely adding sizing agents to the surfaces of two sides of the grey cloth in a double-sided padding sizing agent mode; specifically, the step S4 of sizing includes:
s41, checking at regular time, observing the weft skew condition of the grey cloth at intervals, and adjusting the weft straightening machine;
s42, dipping, pressing the gray fabric subjected to weft straightening into a size box, and pressing size on the surface of the gray fabric by a pressing roller;
s43, drying, namely drying the soaked grey cloth through a steam drying cylinder;
s5, performing ink-jet printing, namely printing according to a set pattern by adopting a reactive dye in a direct ink-jet printing mode;
s6, drying;
s7, steaming and fixing color, namely hanging the dried cloth on a cloth rack, and circularly and sequentially feeding the cloth into a steam box for steaming;
s8 water washing, which comprises the following steps: s81 rinsing with warm water, rinsing with warm water in an overflow water washing mode to remove redundant dyes on the surface of the grey cloth, S82 finishing, adding a softening auxiliary agent into clear water for finishing after rinsing, and drying by hot air circulation after rinsing.
Water washing resistance test:
comparative example:
according to the printed fabric obtained by the traditional digital printing process, the specification with the same gram weight and the same width and the same length is taken as a sample, and specifically, the sample specification is as follows: the size is 40mmx100mm, the gram weight is similar, the printed color and pattern are the same, the sample and the printing process obtained by applying the process are sewn into a whole cloth sample by a sewing device, and then the washing test is carried out.
The washing test was as follows: the temperature, time and addition of the five test methods were:
experiment example one; 30min at 40 ℃;
experiment example two: at 50 ℃ for 30 min;
experiment example three: 30min at 60 ℃;
experimental example four: adding 10 stainless steel balls at 95 ℃ for 30 min;
experimental example five: adding 10 stainless steel balls at 95 ℃ for 240min, adding synthetic detergents with the same amount and types, and circularly washing for 3-5 times according to ISO105-C01-C05-1989 color fastness test and color fastness to washing of textiles: tests 1-5, the color fastness to washing of the printed fabric obtained by the printing process is stably kept at the level of 5 from 4 levels according to the color card after washing and drying.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (8)
1. A digital printing process is characterized in that: the method comprises the following specific steps:
s1 inspecting grey cloth, selecting a fabric woven by rayon or combed cotton material and yarns prepared by a siro spinning process as the grey cloth, and visually inspecting the surface of the grey cloth to have no obvious flaws;
s2, performing previous finishing, cleaning the cloth cover after unwinding the grey cloth, and then performing weft straightening on the grey cloth;
s3 pulping, preparing slurry, continuously stirring the slurry, and then filtering;
s4, sizing, namely adding sizing agents to the surfaces of two sides of the grey cloth in a double-sided padding sizing agent mode;
s5, performing ink-jet printing, namely printing according to a set pattern by adopting a reactive dye in a direct ink-jet printing mode;
s6, drying;
s7, steaming and fixing color, namely hanging the dried cloth on a cloth rack, and circularly and sequentially feeding the cloth into a steam box for steaming;
and S8 washing with water.
2. The digital printing process according to claim 1, wherein: the specific steps of the gray fabric inspection of S1 comprise:
s11 specification detection, namely detecting the width, the gram weight and the density of the gray fabric, flatly paving the gray fabric on a cloth inspecting machine, and visually detecting whether defects exist on the surface of the gray fabric;
s12, seam turning, namely seam turning is carried out on the grey cloth, and the part with the broken hole is sewn;
s13 brushing, reversely carding two sides of the grey cloth by a brushing roller, and collecting the carded dust and flock by a negative pressure fan.
3. The digital printing process according to claim 2, wherein: the specific steps of S2 front sorting include:
s21, weft straightening, namely, performing width finishing on the unwound grey cloth weft straightening machine subjected to brushing treatment;
s22 hot air drying, and heating the grey cloth by a hot air oven, wherein the drying temperature is 80-90 ℃, and the linear velocity is 5-10 m/min.
4. The digital printing process according to claim 1, wherein: the specific steps of S3 pulping comprise:
s31, mixing, sequentially sieving and weighing the urea, the anhydrous sodium sulphate and the sodium alginate according to the mixture ratio, wherein the weight ratio is as follows:
7-10% of urea, 4.5% of anhydrous sodium sulphate, 3% of baking soda, 1% of sodium alginate, 62% of starch paste and the balance of water;
s32, mixing materials, namely weighing water according to the proportion, pouring the water into a beater, simultaneously adding urea and anhydrous sodium sulphate, stirring for 20min until the materials are completely dissolved and deepened, gradually adding sodium alginate and starch paste, and stirring and beating the materials to obtain a pasty mixture;
and S33 adding alkali, continuously stirring the mixture at constant temperature, adding the dissolved sodium bicarbonate solution, continuously stirring for 30min until the mixture is stirred to be fine, and pouring the mixture into a slurry tank of a sizing machine.
5. The digital printing process according to claim 4, wherein: the S4 sizing method comprises the following specific steps:
s41, checking at regular time, observing the weft skew condition of the grey cloth at intervals, and adjusting the weft straightening machine;
s42, dipping, pressing the gray fabric subjected to weft straightening into a size box, and pressing size on the surface of the gray fabric by a pressing roller;
s43, drying, namely drying the soaked grey cloth through a steam drying cylinder.
6. The digital printing process according to claim 4, wherein: the specific step of S32 mixing further comprises: adding an antistatic auxiliary agent into clear water, wherein the bath ratio is 1: 10.
7. The digital printing process according to claim 4, wherein: the step of S3 pulping further comprises: when the proportion of clear water is weighed, the anhydrous sodium sulphate is dissolved by the clear water with the water temperature of 15-17 ℃, and the slurry is filtered by a 80-90 mesh net.
8. The digital printing process according to claim 1, wherein: the specific step of S8 water washing comprises:
s81 rinsing with warm water, rinsing with warm water in an overflow water washing mode, and rinsing to remove redundant dyes on the surface of the grey cloth;
and S82, after finishing, adding a softening auxiliary agent into clear water for finishing after rinsing, and drying by hot air circulation after rinsing.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114808493A (en) * | 2022-05-18 | 2022-07-29 | 绍兴花的数码纺织有限公司 | Digital printing process with high rayon color fixing rate |
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