CN112127184B - High-permeability digital ink-jet printing process for knitted fabric - Google Patents
High-permeability digital ink-jet printing process for knitted fabric Download PDFInfo
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- CN112127184B CN112127184B CN202011058364.7A CN202011058364A CN112127184B CN 112127184 B CN112127184 B CN 112127184B CN 202011058364 A CN202011058364 A CN 202011058364A CN 112127184 B CN112127184 B CN 112127184B
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- 235000008708 Morus alba Nutrition 0.000 claims abstract description 54
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- 229920000297 Rayon Polymers 0.000 claims abstract description 52
- 238000001035 drying Methods 0.000 claims abstract description 41
- 238000010025 steaming Methods 0.000 claims abstract description 33
- 238000004513 sizing Methods 0.000 claims abstract description 30
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- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 26
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- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 18
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- 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
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- 235000010413 sodium alginate Nutrition 0.000 claims description 10
- 229940005550 sodium alginate Drugs 0.000 claims description 10
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- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims description 9
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- 239000004902 Softening Agent Substances 0.000 claims description 7
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- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims description 6
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- 238000010002 mechanical finishing Methods 0.000 claims description 5
- 235000011837 pasties Nutrition 0.000 claims description 5
- 238000002791 soaking Methods 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 5
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- 235000013877 carbamide Nutrition 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 9
- 239000000835 fiber Substances 0.000 abstract description 8
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- 241001522633 Betula utilis subsp. albosinensis Species 0.000 description 8
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- 238000007667 floating Methods 0.000 description 7
- 238000011010 flushing procedure Methods 0.000 description 7
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- 239000012466 permeate Substances 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 4
- 238000009940 knitting Methods 0.000 description 4
- 210000001161 mammalian embryo Anatomy 0.000 description 4
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- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
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- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
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- 238000004043 dyeing Methods 0.000 description 2
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- 238000005265 energy consumption Methods 0.000 description 1
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Classifications
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- 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
- 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
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
-
- 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
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/38—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed 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
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/445—Use of auxiliary substances before, during or after dyeing or printing
-
- 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
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/46—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing natural macromolecular substances or derivatives thereof
- D06P1/48—Derivatives of carbohydrates
-
- 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
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/64—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds without sulfate or sulfonate groups
- D06P1/642—Compounds containing nitrogen
- D06P1/6426—Heterocyclic compounds
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- 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
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/64—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds without sulfate or sulfonate groups
- D06P1/642—Compounds containing nitrogen
- D06P1/649—Compounds containing carbonamide, thiocarbonamide or guanyl groups
- D06P1/6491—(Thio)urea or (cyclic) derivatives
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- 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
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/64—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds without sulfate or sulfonate groups
- D06P1/651—Compounds without nitrogen
- D06P1/65106—Oxygen-containing compounds
- D06P1/65131—Compounds containing ether or acetal groups
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- 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
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/673—Inorganic compounds
- D06P1/67333—Salts or hydroxides
- D06P1/6735—Salts or hydroxides of alkaline or alkaline-earth metals with anions different from those provided for in D06P1/67341
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- 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
- D06P3/02—Material containing basic nitrogen
- D06P3/04—Material containing basic nitrogen containing amide groups
- D06P3/10—Material containing basic nitrogen containing amide groups using reactive dyes
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- 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
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- 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
- D06P5/02—After-treatment
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- 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
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- 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
- D06M2101/10—Animal fibres
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- 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
- D06M2200/50—Modified hand or grip properties; Softening compositions
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Treatment Of Fiber Materials (AREA)
- Coloring (AREA)
Abstract
The invention discloses a high-permeability digital ink-jet printing process of knitted fabric, which comprises the following steps: a step of inspecting the pre-printed raw cloth; sizing and tentering processes, namely padding and sizing by adopting a diagonal padder of a tentering setting machine, and stretching the knitted fabric by 30-40% in the warp direction and 20-25% in the weft direction; a rolling procedure; the jet printing process adopts reactive dye jet printing ink, wherein ICC equipment characteristic files are special ICC equipment characteristic files for cotton, viscose fiber and mulberry silk knitted fabrics (including knitted mesh fabrics) and are implemented by adopting a mode of jet printing one of light colors on the back side and jet printing patterns on the front side of the light and dark-colored mesh knitted fabrics; steaming and fixing color; a water washing procedure; a drying procedure; the high-permeability digital jet printing technology is environment-friendly and suitable for high-quality printing knitted products of cotton, viscose and mulberry silk, solves the technical defect of processing knitted products by the existing ink-jet printing technology, and remarkably improves the permeability of the digital jet printing knitted fabric and the definition of the contours of jet printing patterns.
Description
Technical Field
The invention relates to the technical field of digital printing, in particular to a high-permeability digital ink-jet printing process of knitted fabrics.
Background
The digital ink-jet printing technology has the advantages of low energy consumption, low pollution, clean production, fast product design and production, fine color and pattern quality, and the like, and has been rapidly developed at home and abroad in recent years. However, the existing ink-jet printing technology generally has the disadvantages of high urea consumption and high ammonia nitrogen index of the washing wastewater in a sizing formula, and is not environment-friendly; the knitted fabric processing, especially the dark knitted fabric or dark light and thin mesh knitted product, has the technical problems of lower color yield, insufficient color depth, serious chromatic aberration on front and back surfaces, easy occurrence of whitening phenomenon, large fabric shrinkage, most of density curves and ICC equipment characteristic files are in a mode of equipment manufacturer, lack of pertinence to printing materials, influence on spray printing precision of colors and patterns and the like, and cannot meet the new requirements of high-end textile market.
Disclosure of Invention
The invention aims to provide a high-permeability digital ink-jet printing process of knitted fabric, which is environment-friendly and suitable for printing knitted products of cotton, viscose and mulberry silk, solves the technical defect of processing knitted products by the existing ink-jet printing technology, and remarkably improves the permeability of the digital ink-jet printed knitted fabric and the accuracy of ink-jet printed patterns.
The invention is realized by the following technical scheme: a high-permeability digital ink-jet printing process for processing knitted fabrics (cotton knitted fabrics, viscose knitted fabrics and mulberry silk knitted fabrics) comprises the following steps:
1) A step of inspecting the embryo cloth treated before jet printing, wherein cotton knitted fabric, viscose knitted fabric and mulberry silk knitted fabric embryo cloth treated in a conventional treatment mode before jet printing in the field are inspected;
2) Sizing and tentering;
3) A rolling procedure;
4) A spray printing process;
5) Steaming and fixing color;
6) A water washing procedure;
7) And (5) a drying procedure.
Further in order to better realize the invention, the following arrangement mode is adopted: the sizing agent used in the sizing and tentering processes comprises the following components in percentage by mass: 3 to 5 percent of anhydrous sodium sulphate, 1 to 6 percent of urea, 2 to 5 percent of urea substitute, 1 to 5 percent of sodium bicarbonate, 1.5 to 3.0 percent of sodium alginate, 0.5 to 2 percent of dye-resistant salt S,1 to 3 percent of defoaming penetrating agent AP, 0.1 to 0.15 percent of dispersing chelating agent, 1.5 to 2 percent of ATP-30 and the balance of water.
Further in order to better realize the invention, the following arrangement mode is adopted: 1-2% of N-methyl pyrrolidone and 1-3% of polyethylene glycol are adopted as the urea substitutes for cotton knitted fabric and viscose knitted fabric treatment; the urea substitute for mulberry silk knitted fabric treatment adopts 2-5% of N-methyl pyrrolidone.
Further in order to better realize the invention, the following arrangement mode is adopted: the sizing and tentering processes are completed by adopting weft finishing, tentering, shaping and drying combined equipment, and the method comprises the following specific steps:
2.1 Pulping; uniformly stirring the set slurry on a pulping machine to form paste, wherein the specific operation is as follows: adding quantitative water into a pulp mixing barrel of a pulping machine at normal temperature, adding a dispersing chelating agent, and placing the stirring machine in a low-speed gear 1430+/-50 r/min for stirring for 1-3 min; placing the pulp mixing barrel at an eccentric position, starting a high-speed gear 2850+/-50 revolutions per minute of a stirrer to stir, forming up-and-down vortexes in the pulp mixing barrel, sequentially and slowly adding sodium alginate, sodium bicarbonate (commonly known as sodium bicarbonate), anhydrous sodium sulfate, urea substitutes, anti-dye salt, defoaming penetrating agent AP, and finally slowly adding ATP-30, so as to avoid that a large amount of bubbles generated by the stirring machine cause paste to flow out of the pulp mixing barrel; firstly, stirring alternately for about 30 minutes according to a high speed gear and a low speed gear every 5-6 minutes; fully stirring at a low speed of 1380-1480 rpm for 120-160 min, standing for standby, and controlling the pulping temperature not to exceed 50 ℃ during pulping;
2.2 Weft finishing: correcting or eliminating the weft skew of the knitted fabric to be processed on a weft straightening machine through mechanical finishing, wherein the weft straightening process comprises the following parameters: the weft slope is controlled within +/-1.5%, the weft finishing speed of the cotton knitted fabric and the viscose knitted fabric is 20-25 m/min, and the weft finishing speed of the mulberry silk knitted fabric is 13-18 m/min;
2.3 Sizing: uniformly padding the pasty slurry on the knitted fabric subjected to weft finishing treatment by a diagonal padder of a tentering, shaping and drying combined device; the sizing process parameters are as follows: the temperature is 155-165 ℃, overfeeding is 7-20%, the rolling liquid rate is 90-95%, and the roller pressure is 0.35-0.4 MPa; sizing speed of cotton knitted fabric and viscose knitted fabric is 20-25 m/min, and sizing speed of mulberry silk knitted fabric is 13-18 m/min;
2.4 Tentering: after the step 2.3), stretching the warp direction of the knitted fabric by 30-40% and the weft direction by 20-25% by a tentering setting machine; the technological parameters of the tentering of the cotton knitted fabric and the viscose knitted fabric are as follows: the temperature of a stenter drying room is 155-165 ℃, the stenter speed is 20-25 m/min, and the speeds of five groups of circulating fans of the drying room are respectively: 700-800 rpm, 700-1200 rpm, 700-800 rpm; the tentering technological parameters of the mulberry silk knitted fabric are as follows: the temperature of a drying room of the tentering setting machine is 155-165 ℃, the tentering speed is 13-18 m/min, and the speeds of five groups of circulating fans of the drying room are respectively: 500-700 rpm, 700-800 rpm, 500-700 rpm.
Further in order to better realize the invention, the following arrangement mode is adopted: the rolling procedure is to roll the knitted fabric processed in the step 2) into rolls through a rolling machine; the speed of the rolling machine is 13-18 m/min when the mulberry silk knitted fabric is processed, 20-25 m/min when the cotton knitted fabric and the viscose knitted fabric are processed, and the cotton knitted fabric is required to be subjected to width trimming according to the technological requirements by a trimming device of the rolling machine.
Further in order to better realize the invention, the following arrangement mode is adopted: the spray printing process comprises the following steps: jet printing reactive dye jet printing ink with set color on the knitted fabric on the jet printing equipment; for mesh knitted fabric (mesh-carrying knitted fabric), because the mesh knitted fabric is woven by adopting strong twisted filaments or yarns, and each yarn knot position is compact and thicker due to yarn twisting, dye is not easy to permeate, and the yarn knots are easy to whiten or lighten due to conventional jet printing, the jet printing of the dark and light mesh-like knitted fabric is carried out by adopting a 2-time jet printing mode of firstly jet printing one lightest color in the design of the reverse side of the knitted fabric and then jet printing other colors of patterns on the front side. The preferred adoption Atexco Honghua VEGA 3180S ink jet printing equipment realizes the jet printing, and the inkjet technological parameters are:
Cotton knitted fabric: the ink quantity is 200 to 400pl, a special density curve of cotton knitted fabric which is specially made for sensing the printing intention and selecting the self-made density curve is set in RIP software, an ICC equipment characteristic file special for cotton knitted fabric which is specially made for self-made is selected by a printer ICC profile, the printing pass number is 508 to 3pass, the printing speed is 45 meters/hour, the distance between a nozzle and a fabric is 3.5 millimeters, the resolution is 400 pixels/inch, and the drying temperature is 60 to 65 ℃; the working environment temperature is 23-25 ℃ and the relative humidity is 55-75%.
Mulberry silk knitted fabric: setting printing intention as saturation in RIP software, selecting a self-made density curve special for the mulberry silk knitted fabric by a density curve, selecting a self-made ICC equipment characteristic file special for the mulberry silk knitted fabric by a printer ICC profile, printing pass number of 600-3 pass, printing speed of 45 m/h, nozzle-fabric distance of 3.5 mm, resolution of 400 pixels/inch and drying temperature of 50-55 ℃; the working environment temperature is 23-25 ℃ and the relative humidity is 55-75%.
Viscose knitted fabric: setting printing intention as relative color, density curve selecting self-made special density curve of viscose knitted fabric, printer ICC configuration file selecting self-made special ICC equipment characteristic file of viscose knitted fabric, printing pass number 508-3 pass, printing speed 50 m/h, nozzle-fabric distance 3.5 mm, resolution 400 pixels/inch, drying temperature 50-55deg.C in RIP software; the working environment temperature is 23-25 ℃ and the relative humidity is 55-75%.
The density curve is also called linearization curve, and is prepared for solving the problem of nonlinearity between input signals and output ink values of the inkjet printing device, the limit of different printing mediums on total ink amount and the difference of the coloring degree of different color inks on different printing mediums. The density curve disclosed by the application is a density curve of Atexco Honghua VEGA3180S digital ink-jet printing equipment manufactured by using an eye-i 1pro2 spectrophotometer and VEGAPrint (RIP) software under the precondition that ink in a Honghua original factory and printing media are viscose fiber, cotton and mulberry silk fabrics are adopted.
The ICC equipment characteristic file is also called ICC curve, and is prepared for solving the problem of color difference of finished fabric products caused by the parameter changes of ink-jet printing equipment, ink and fabric. The ICC equipment characteristic file disclosed by the application is a characteristic file of Atexco Honghua VEGA3180S digital ink-jet printing equipment manufactured by using an eye one-i1pro2 spectrophotometer and ProfileMaker Pro5.0.10 software under the precondition that ink of a Honghua original factory and printing media are viscose fiber, cotton and mulberry silk fabrics are adopted. The ICC device profile correlates device-independent color values (Lab data, representing the actual color perception seen by humans) with device color values (CMYK data) based on a color look-up table (LUT), and directs the completion of conversion of Lab data and inkjet printer CMYK data in VEGAPrint (RIP) software, determining the relative usage of each primary ink of inkjet printed colors by the conversion process.
Further in order to better realize the invention, the following arrangement mode is adopted: the steam fixation procedure adopts continuous airtight steaming fixation through a steamer, and the technological parameters are as follows: cotton knitted fabrics and viscose knitted fabrics: steaming temperature is 100-103 ℃, steaming time is 15 minutes, and direct steam flow is 200-210 kg/h. Because the direct steam flow is relatively large, in order to prevent the top in the steamer from dripping water under high humidity, the product quality is influenced (the temperature of the top plate of the steamer is too high, the humidity in the steamer is too low, the color of the sprayed knitted fabric is not good in the steaming process, the temperature of the top plate of the steamer is too low, the top plate of the steamer is easy to drip water), and the temperature of the top plate of the steamer is controlled to be 85-90 ℃;
mulberry silk knitted fabric: the steaming temperature is 101-103 ℃, the steaming time is 12 minutes, the direct steam flow is 185-195 kg/h, and the temperature of the stainless steel top plate in the steamer is 88-93 ℃.
Further in order to better realize the invention, the following arrangement mode is adopted: the washing process adopts rope washing machine to wash, and adopts to stitch up viscose fiber, mulberry silk knitting front inwards along warp direction selvedge washing, and cotton knitting only need to advance cloth along warp direction fifty percent discount, need not to stitch up, avoids the knitting front to be scratched to adopt spray drainage washing many times, include the following step:
6.1 Cold water cleaning
The float color and paste on the surface of the knitted fabric are removed by cold water washing, and the operation method is as follows: the front surface of the knitted fabric is folded in half along the warp direction before washing, and the viscose fiber knitted fabric and the mulberry silk knitted fabric are sewn by a special sewing machine every 60-80 cm, the hemming cannot exceed 1.5cm, and the front surface of the fabric is prevented from being scratched during rope washing; the cotton knitted fabric only needs to fold the front surface of the knitted fabric in the warp direction, and no stitching is needed; and (3) putting a proper amount of cold water into the rope-shaped rinsing machine, when the water level exceeds the steam pipe and the temperature controller probe, opening a spraying device above the rope-shaped rinsing machine, starting the rope-shaped rinsing machine, putting knitted fabrics (folded cotton knitted fabrics, folded and sewn viscose knitted fabrics and mulberry silk knitted fabrics) into the rope-shaped rinsing machine one by one in sequence, tying two ends of each knitted fabric together, and putting the common medium-sized rope-shaped rinsing machine into 8-12 strips for cleaning. The knitted fabric is cleaned by a rope-shaped rinsing machine, and the specific technological parameters are as follows: at normal temperature, the cloth feeding speed is 20-30 m/min, the cleaning speed is 12-15 m/min, the cold water cleaning time is 20-25 min, and after the paste is fully swelled and the float color is fully cleaned, the water is discharged, sprayed and washed;
6.2 First warm water cleaning
After the step 6.1), evacuating the sewage in the rope-shaped rinsing machine, feeding water, adding a cleaning agent, and cleaning; then the heating steam is closed, and the water is discharged, sprayed and washed; the technological parameters are as follows: 0.05 to 0.5 percent of detergent, 60 to 70 ℃ of cleaning temperature, 12 to 15 meters per minute of cleaning speed and 15 to 25 minutes of cleaning time;
specifically, in order to prevent the knitted fabric from being stained due to the fact that the floating color is not removed in the first cold water washing process, warm water washing is needed to ensure the product quality, and the operation steps are as follows: after the step 6.1), opening a water inlet valve of the rope-shaped rinsing machine after the cold water washing dirty water is drained completely, and adding 0.05-0.5% of detergent (generally 0.1-0.2% of detergent when the light color is washed) into a trough of the rope-shaped rinsing machine; when the water level exceeds that of a steam pipe and a temperature controller probe, a spraying device above the rope-shaped rinsing machine is opened, a steam valve of the rope-shaped rinsing machine is opened for heating, when the water level exceeds that of the knitted fabric in a cylinder of the rope-shaped rinsing machine, the rope-shaped rinsing machine is started for washing, and after washing is finished, heating steam is closed, and water is discharged for spraying and flushing; during cleaning, the cleaning temperature is 60-70 ℃, the cleaning speed is 12-15 m/min, and the cleaning time is 15-25 minutes;
Wherein, the mulberry silk knitted fabric adopts 0.05 to 0.15 percent of detergent, and the cotton and viscose knitted fabric adopts 0.2 to 0.5 percent of detergent; the warm water cleaning time of the mulberry silk knitted fabric is 15-18 minutes, and the warm water cleaning time of the viscose knitted fabric and the cotton knitted fabric is 15-25 minutes;
6.3 Hot water cleaning
The method aims at ensuring the color fastness of washing of the knitted fabric, and comprises the following operation steps: after the step 6.2), evacuating the sewage in the rope-shaped rinsing machine, feeding water, adding a cleaning agent, and cleaning; then the heating steam is closed, and the water is discharged, sprayed and washed; the technological parameters are as follows: 0.3 to 0.7 percent of detergent, 90 to 100 ℃ of cleaning temperature, 12 to 15 meters per minute of cleaning speed and 15 to 30 minutes of cleaning time;
specifically, after the step 6.2) is finished, after the dirty water is completely drained, opening a water inlet valve of the rope-shaped rinsing machine, adding a detergent into a trough of the rope-shaped rinsing machine, opening a spraying device above the rope-shaped rinsing machine when the water level exceeds a steam pipe and a temperature controller probe, opening a steam valve of the rope-shaped rinsing machine for heating, and starting the rope-shaped rinsing machine for washing when the water level exceeds the water level of knitted fabric (cloth) in a cylinder of the rope-shaped rinsing machine. The specific process parameters are as follows: 0.3 to 0.7 percent of detergent, 90 to 100 ℃ of hot water cleaning temperature, 12 to 15 meters per minute of hot water cleaning speed and 15 to 35 minutes of hot water cleaning time;
Wherein, the mulberry silk knitted fabric adopts 0.3 to 0.5 percent of detergent, and the cotton and viscose knitted fabric adopts 0.5 to 0.7 percent of detergent; the washing time of the mulberry silk knitted fabric and the viscose knitted fabric is 15-25 minutes, and the washing time of the cotton knitted fabric is 25-35 minutes;
6.4 Cleaning with warm water, regulating pH value, and fixing color
After the step 6.3), after the sewage is emptied, water is fed and cleaned for 5 to 10 minutes under the conditions that the cleaning temperature is 45 to 50 ℃ and the cleaning speed is 12 to 15 m/min, then the sewage is drained until 100 kg of water is remained, 0.05 to 0.1 percent of citric acid is added to adjust the PH value, and 0.2 to 0.7 percent of color fixing agent is added to fix color;
the specific operation steps are that after the hot water washing dirty water is drained completely through the step 6.3), a water inlet valve of the rope-shaped rinsing machine is opened, when the water level exceeds a steam pipe and a temperature controller probe, a spraying device above the rope-shaped rinsing machine is opened, the steam valve of the rope-shaped rinsing machine is opened for heating, when the water level exceeds two thirds of the cloth accumulation height of knitted fabrics (cloth) in a cylinder of the rope-shaped rinsing machine, the rope-shaped rinsing machine is started for washing, water is drained while spraying, residual detergent is removed during hot water washing, and heating steam is closed; during warm water cleaning, PH value adjustment and color fixation, the specific process parameters are as follows: the warm water is used for cleaning at the temperature of 45-50 ℃, the cleaning speed is 12-15 m/min, the cleaning time is 5-10 min, the heating steam is closed, 100 kg of water is left after water is drained, 0.05-0.1% of citric acid and 0.2-0.7% of color fixing agent are added;
The color fixing agent of the mulberry silk knitted fabric is added in an amount of 0.2-0.4%, and the color fixing agent of the cotton and viscose knitted fabric is added in an amount of 0.4-0.7%; the washing time of the mulberry silk knitted fabric and the viscose knitted fabric is 5-8 minutes, and the washing time of the cotton knitted fabric is 8-10 minutes;
6.5 Soft finishing)
After the step 6.4), preparing the softener, the silicone oil and the antistatic agent according to the technological requirements, adding the mixture into a charging tank of a rope-shaped rinsing machine, uniformly mixing, and starting the rope-shaped rinsing machine; the specific technological parameters during soft finishing are as follows: at normal temperature, softening agent 0.2-1.3%, silicone oil 0.2-0.7%, antistatic agent 0.4-0.8%, soaking time 5-10 min, and taking out.
Wherein, the addition amount of the softener of the mulberry silk knitted fabric is 0.2 to 0.4 percent, the silicone oil is 0.4 to 0.7 percent, and the antistatic agent is 0.6 to 0.8 percent; 0.6 to 0.8 percent of softening agent, 0.2 to 0.4 percent of silicone oil and 0.6 to 0.8 percent of antistatic agent of the viscose knitted fabric; 0.9 to 1.2 percent of softening agent, 0.5 to 0.7 percent of silicone oil and 0.4 to 0.5 percent of antistatic agent for cotton knitted fabrics; the treatment time of the mulberry silk knitted fabric and the viscose knitted fabric is 5-8 minutes, and the treatment time of the cotton knitted fabric is 8-10 minutes.
Further in order to better realize the invention, the following arrangement mode is adopted: the drying procedure comprises the following steps:
7.1 Dewatering at a speed of 800-900 rpm by adopting a centrifugal dewatering machine;
7.2 After the step 7.1), adopting a roller dryer to dry the knitted fabric at the speed of 32 revolutions per minute and the temperature of 70-100 ℃, stopping the machine during the drying process for finishing 1-2 times, and preventing the winding from causing dead creases and affecting the product quality.
Compared with the prior art, the invention has the following advantages:
(1) According to the invention, the non-urea dyeing assistant (urea substitute) N-methyl pyrrolidone and polyethylene glycol are adopted in the slurry formula, so that the content of conventional urea in digital ink-jet printing of cotton, viscose fiber and mulberry silk knitted fabrics is reduced from 6-18% to 1-6%, the ammonia nitrogen index in printing water washing wastewater is greatly reduced, and the environment protection is facilitated.
(2) The permeability and apparent color depth value K/S of the dark-colored fabric spray-printed by adopting the process technology are obviously superior to those of the conventional digital printing process; the fabric is uniform in coloring, high in color fastness and good in hand feeling, and can be ensured not to turn white under the action of external force. Especially, the mesh knitting product is that the yarns are mostly hard-twisted yarns, ink is not easy to permeate, the yarns are twisted and wound into nodes at mesh positions, the permeability is poorer, the yarns are white or light in color, and the yarns are more easy to turn over and expose white due to the reinforcing twisting of the yarns, so that the method is a great difficulty in digital jet printing. The dark mesh knitted fabric processed by the process basically achieves no chromatic aberration on the front side and the back side.
(3) The knitted fabric has a loose structure and large deformation, is easy to hang filaments when being worn, has low color yield, insufficient color depth and serious chromatic aberration on the front side and the back side when being sprayed with the knitted fabric by adopting the prior art, and is extremely easy to turn white; meanwhile, the knitted fabric is loose in structure, so that the phenomenon of ink permeation is more likely to occur under the condition of improving permeability, and the condition of guaranteeing the fineness of printing is not facilitated. On one hand, the invention ensures that the spray-printed knitted product obtains the best penetration effect and the definition and accuracy of spray-printed colors, lines and graphic outlines on the premise of effectively controlling the ink permeation by the scientific compatibility of various slurry components and novel auxiliary agents and the corresponding printing and dyeing whole process. On the other hand, for different knitted fabric varieties, the invention respectively prepares corresponding density curves and ICC equipment characteristic files according to the characteristics of cotton, viscose fiber and mulberry silk knitted fabrics, further improves the accuracy of printing colors and patterns, and the spray-printed product has bright color, clear patterns, good reproducibility and maximum guarantee of consistency of processed products.
(4) The shrinkage of the knitted product fabric processed by the method can be controlled to be 3-5%, which is far lower than the common level in the industry of 8-12%; the scratch and ash damage defects can be reduced by more than 90 percent. The processing income of the product is 3-10 times of that of similar products in the industry, the economic value is obvious, and the market demand of the high-end knitted printing product at home and abroad is completely met.
Detailed Description
The present invention will be described in further detail with reference to examples, but embodiments of the present invention are not limited thereto.
All of the features disclosed in this specification, or all of the steps in a method or process disclosed, may be combined in any combination, except for mutually exclusive features and/or steps.
Any feature disclosed in this specification may be replaced by alternative features serving the same or equivalent purpose, unless expressly stated otherwise. That is, each feature is one example only of a generic series of equivalent or similar features, unless expressly stated otherwise.
Table 1 shows the product comparison (cotton knitted fabric) of the conventional digital printing process and the digital jet printing process of the invention;
table 2 shows the product comparison (viscose knitted fabric) of the conventional digital printing process and the digital jet printing process of the invention;
table 3 shows the product comparison of the conventional digital printing process and the digital jet printing process of the invention (mulberry silk knitted fabric);
table 1:
table 2:
table 3:
example 1:
in this embodiment, a high-permeability digital ink-jet printing process for a knitted fabric is used for processing a cotton knitted fabric, and the steps of inspecting a blank cloth after pre-printing treatment, sizing, tentering, rolling, jet printing, steaming fixation, washing and drying are as follows:
1) A step of inspecting the pre-jet printing treated knitted fabric, which is to inspect the cotton knitted fabric treated in a conventional treatment mode before the ink-jet printing in the field;
2) Sizing and tentering processes, which comprise the following specific steps:
2.1 Pulping; the composition by mass percent is as follows: 3 to 5 percent of anhydrous sodium sulphate, 1 to 6 percent of urea, urea substitutes (1 to 2 percent of N-methyl pyrrolidone and 1 to 3 percent of polyethylene glycol), 1 to 5 percent of sodium bicarbonate, 1.5 to 3.0 percent of sodium alginate, 0.5 to 2 percent of anti-dye salt S,1 to 3 percent of defoaming penetrating agent AP, 0.1 to 0.15 percent of dispersing chelating agent, 1.5 to 2 percent of ATP-30 and the balance of water, wherein the urea substitutes are uniformly stirred into paste on a pulping machine, and 1 to 2 percent of N-methyl pyrrolidone and 1 to 3 percent of polyethylene glycol are adopted; the concrete operation is (single metering, water adding amount is 1/2-2/3 of the size mixing barrel of the stirrer): at normal temperature, water is put into a pulping barrel of a pulping machine, a dispersing chelating agent is added, the machine is placed in a low-speed gear 1430+/-50 r/min, the machine is started to stir for 1-3 min, and the hardness of water quality is reduced; placing the pulp mixing barrel at an eccentric position, placing the stirrer at a high-speed gear 2850+/-50 revolutions per minute for stirring, so that an up-down vortex is formed in the pulp mixing barrel, and the auxiliary agent can be conveniently and quickly combined with water fully; sodium alginate, sodium bicarbonate (commonly known as baking soda), anhydrous sodium sulphate, urea substitutes, anti-staining salt S and defoaming penetrating agent AP are sequentially and slowly added, and finally ATP-30 is slowly added to avoid that a large amount of bubbles generated by the ATP cause paste to flow out of a pulp mixing barrel; firstly, stirring alternately for about 30 minutes according to a high speed gear and a low speed gear every 5-6 minutes; fully stirring at a low speed of 1380-1480 rpm for 120-160 min and standing for later use; and pay attention to controlling the pulping temperature not to exceed 50 ℃;
2.2 Weft finishing: the weft skew existing in the cotton knitted fabric to be processed is corrected or eliminated on the weft straightening machine through mechanical finishing, so that the influence on jet printing quality is avoided, and the weft straightening process parameters are as follows: the weft slope is controlled within +/-1.5 percent, and the weft straightening speed is 20-25 meters/min;
2.3 Sizing: uniformly padding the pasty slurry on cotton knitted fabric subjected to weft finishing treatment by a diagonal padder of a tentering setting machine; in sizing, the technological parameters are as follows: the temperature is 155-165 ℃, the speed of the vehicle is 20-25 m/min, the overfeeding is 7-20%, the rolling liquid rate is 90-95%, and the roller pressure is 0.35-0.4 MPa;
2.4 Tentering, namely, after the step 2.3), stretching the cotton knitted fabric by 30-40% in the warp direction and 20-25% in the weft direction through a tentering setting machine; the technological parameters during tentering are as follows: the temperature of the stenter drying room is 155-165 ℃, the shaping speed of the stenter is 20-25 m/min, and the speeds of five groups of circulating fans in the stenter drying room are respectively: 700-800 rpm, 700-900 rpm, 700-800 rpm;
3) And (3) a rolling procedure, namely rolling the dried cotton knitted fabric processed in the step (2) into a roll by a rolling machine at the speed of 20-25 m/min, and trimming the edge of the gate width according to the process requirement by a trimming device of the rolling machine, and removing the hemming part of the cotton knitted fabric (knitted fabric) to make the edge of the knitted fabric flat.
4) A jet printing process, namely jet printing reactive dye jet printing ink with set color on cotton knitted fabrics on Atexco Honghua VEGA 3180S jet printing equipment; for mesh knitted fabric (mesh-carrying knitted fabric), because the mesh knitted fabric is woven by adopting strong twisted filaments or yarns, and each yarn knot position is compact and thicker due to yarn twisting, dye is not easy to permeate, and the yarn knots are easy to whiten or lighten due to conventional jet printing, the jet printing of the dark and light mesh-like knitted fabric is carried out by adopting a 2-time jet printing mode of firstly jet printing one lightest color in the design of the reverse side of the knitted fabric and then jet printing other colors of patterns on the front side of the knitted fabric; the inkjet printing process parameters are: the ink quantity is 200 to 400pl, a special density curve of cotton knitted fabric which is specially made for sensing the printing intention and selecting the self-made density curve is set in RIP software, an ICC equipment characteristic file special for cotton knitted fabric which is specially made for self-made is selected by a printer ICC profile, the printing pass number is 508 to 3pass, the printing speed is 45 meters/hour, the distance between a nozzle and a fabric is 3.5 millimeters, the resolution is 400 pixels/inch, and the drying temperature is 60 to 65 ℃; the working environment temperature is 23-25 ℃ and the relative humidity is 55-75%.
5) And a steaming fixation procedure, namely adopting continuous closed steaming fixation by a steamer, wherein the technological parameters are as follows: steaming temperature is 100-103 ℃, steaming time is 15 minutes, and direct steam flow is 200-210 kg/h. Because the direct steam flow is relatively large, in order to prevent the top in the steamer from dripping water under high humidity, the product quality is influenced (the temperature of the top plate of the steamer is too high, the humidity in the steamer is too low, the color development of the knitted fabric after jet printing in the steaming process is poor, the temperature of the top plate of the steamer is too low, and the dripping water of the top plate of the steamer is easy to cause), and therefore, the temperature of the top plate of the steamer (the uppermost layer of stainless steel plate in the steamer is controlled to be 85-90 ℃.
6) And a washing procedure, namely washing by adopting a rope-shaped washing machine, and washing by doubling the front surface of the cotton knitted fabric inwards along the warp direction, avoiding the front surface of the cotton knitted fabric from being scratched, and washing by adopting repeated spraying and water draining, and comprises the following steps:
6.1 Cold water cleaning
The floating color and the paste on the surface of the cotton knitted fabric are removed by cold water washing, and the operation method is as follows: the front surface of the cotton knitted fabric (knitted fabric) is folded in half along the warp direction before washing, so that the front surface of the fabric is prevented from being scratched during rope washing; and (3) putting a proper amount of cold water into the rope-shaped rinsing machine, when the water level exceeds the steam pipe and the temperature controller probe, opening a spraying device above the rope-shaped rinsing machine, starting the rope-shaped rinsing machine, putting the folded knitted fabrics (cotton knitted fabrics) into the rope-shaped rinsing machine one by one in sequence, tying two ends of each knitted fabric together, and putting the common medium-sized rope-shaped rinsing machine into 8-12 strips for cleaning. The knitted fabric is cleaned by a rope-shaped rinsing machine, and the specific technological parameters are as follows: at normal temperature, the cloth feeding speed is 20-30 m/min, the cleaning speed is 12-15 m/min, the cold water cleaning time is 20-25 min, and after the paste is fully swelled and the float color is fully cleaned, the water is discharged, sprayed and washed;
6.2 First warm water cleaning
In order to prevent the knitted fabric from being stained due to the fact that the floating color is not removed in the first cold water washing process, warm water washing is needed to ensure the product quality, and the operation steps are as follows: after the step 6.1) is finished, opening a water inlet valve of the rope-shaped rinsing machine after cold water washing dirty water is completely discharged, adding 0.2-0.5% of detergent into a trough of the rope-shaped rinsing machine, opening a spraying device above the rope-shaped rinsing machine when the water level exceeds a steam pipe and a temperature controller probe, opening a steam valve of the rope-shaped rinsing machine for heating, starting the rope-shaped rinsing machine for washing when the water level exceeds the knitted fabric in a cylinder of the rope-shaped rinsing machine, closing heating steam after washing, draining water and spraying for flushing; wherein the cleaning temperature is 60-70 ℃, the cleaning speed is 12-15 m/min, and the warm water cleaning time is 15-25 min;
6.3 Hot water cleaning
The method aims at ensuring the color fastness of water washing and comprises the following operation steps: after the step 6.2), after the dirty water is completely drained, opening a water inlet valve of the rope-shaped rinsing machine, adding 0.5-0.7% of detergent into a trough of the rope-shaped rinsing machine, opening a spraying device above the rope-shaped rinsing machine when the water level exceeds a steam pipe and a temperature controller probe, opening a steam valve of the rope-shaped rinsing machine for heating, starting the rope-shaped rinsing machine for washing when the water level exceeds the knitted fabric in a cylinder of the rope-shaped rinsing machine, and closing heating steam after washing, draining water and spraying for flushing. Wherein the hot water cleaning temperature is 90-100 ℃, the cleaning speed is 12-15 m/min, and the cleaning time is 25-35 minutes;
6.4 Cleaning with warm water, regulating pH value, and fixing color
The operation steps are as follows: after the step 6.3) is finished, after the dirty water is drained, opening a water inlet valve of the rope-shaped rinsing machine, when the water level exceeds a steam pipe and a temperature controller probe, opening a spraying device above the rope-shaped rinsing machine, opening a steam valve of the rope-shaped rinsing machine for heating, when the water level exceeds two thirds of the cloth accumulation height of knitted cloth in a cylinder of the rope-shaped rinsing machine, starting the rope-shaped rinsing machine for washing, spraying and draining water, removing residual detergent during hot water washing, and closing heating steam. The specific process parameters are as follows: the warm water is used for cleaning at the temperature of 45-50 ℃, the cleaning speed is 12-15 m/min, the cleaning time is 8-10 min, the heating steam is closed, 100 kg of water is left after water is drained, 0.05-0.1% of citric acid and 0.4-0.7% of color fixing agent are added;
6.5 Soft finishing)
After the step 6.4), preparing the softener, the silicone oil and the antistatic agent according to the technological requirements, adding the mixture into a charging tank of a rope-shaped rinsing machine, uniformly mixing, and starting the rope-shaped rinsing machine, wherein the specific technology is as follows: after the step 6.4), adding 0.9 to 1.2 percent of softening agent, 0.5 to 0.7 percent of silicone oil and 0.4 to 0.5 percent of antistatic agent into the mixture at normal temperature, soaking the mixture for 8 to 10 minutes, and taking the mixture out of the cylinder.
7) A drying process, comprising the following steps:
7.1 Dewatering at a speed of 800-900 rpm by adopting a centrifugal dewatering machine;
7.2 After the step 7.1), adopting a roller dryer to dry the knitted fabric at the speed of 32 revolutions per minute and the temperature of 70-100 ℃, stopping the machine during the drying process for finishing 1-2 times, and preventing the winding from causing dead creases and affecting the product quality.
Example 2:
in this embodiment, a high-permeability digital ink-jet printing process for processing a viscose knitted fabric, which is specifically characterized by comprising the steps of a raw fabric inspection procedure of pre-printing treatment, sizing, tentering, rolling, jet printing, steaming fixation, washing and drying:
1) A step of inspecting the pre-jet printing treated blank, which is to inspect the viscose knitted fabric blank treated in a conventional treatment mode before the ink-jet printing in the field;
2) Sizing and tentering processes, which comprise the following specific steps:
2.1 Pulping; the composition by mass percent is as follows: 3 to 5 percent of anhydrous sodium sulphate, 1 to 6 percent of urea, 2 to 5 percent of urea substitute, 1 to 5 percent of sodium bicarbonate, 1.5 to 3.0 percent of sodium alginate, 0.5 to 2 percent of dye-proofing salt S,1 to 3 percent of defoaming penetrating agent AP, 0.1 to 0.15 percent of dispersing chelating agent, 1.5 to 2 percent of ATP-30, and the balance of water, wherein the slurry is uniformly stirred into paste on a pulping machine, and the urea substitute adopts 1 to 2 percent of N-methylpyrrolidone and 1 to 3 percent of polyethylene glycol; the concrete operation is (single metering, water adding amount is 1/2-2/3 of the size mixing barrel of the stirrer): at normal temperature, water is put into a pulping barrel of a pulping machine, a dispersing chelating agent is added, the stirring machine is placed in a low-speed gear 1430+/-50 r/min, and stirring is carried out for 1-3 min, so that the water quality hardness is reduced; placing the pulp mixing barrel at an eccentric position, starting a high-speed gear 2850+/-50 revolutions per minute of a stirrer to stir, forming up-and-down vortexes in the pulp mixing barrel, sequentially and slowly adding sodium alginate, sodium bicarbonate (commonly known as sodium bicarbonate), anhydrous sodium sulfate, urea substitutes, anti-dye salt S and defoaming penetrating agent AP, and finally slowly adding ATP-30 to avoid that a large amount of bubbles generated by the stirring machine cause paste to flow out of the pulp mixing barrel; firstly, stirring alternately for about 30 minutes according to a high speed gear and a low speed gear every 5-6 minutes; fully stirring at a low speed of 1380-1480 rpm for 120-160 min and standing for later use; and pay attention to controlling the pulping temperature not to exceed 50 ℃;
2.2 Weft finishing: correcting or eliminating the weft inclination of the viscose knitted fabric to be processed on a weft straightening machine through mechanical finishing, avoiding influencing jet printing quality, and straightening weft with the following technological parameters: the weft slope is controlled within +/-1.5 percent, and the weft straightening speed is 20-25 meters/min;
2.3 Sizing: uniformly padding the pasty slurry on the viscose knitted fabric subjected to weft finishing treatment by a diagonal padder of a tentering setting machine; in sizing, the technological parameters are as follows: the temperature is 155-165 ℃, the speed of the vehicle is 20-25 m/min, the overfeeding is 7-20%, the rolling liquid rate is 90-95%, and the roller pressure is 0.35-0.4 MPa;
2.4 Tentering, namely, after the step 2.3), stretching the viscose knitted fabric by 30-40% in the warp direction and 20-25% in the weft direction through a tentering setting machine; the technological parameters during tentering are as follows: the temperature of the stenter drying room is 155-165 ℃, the shaping speed of the stenter is 20-25 m/min, and the speeds of five groups of circulating fans in the stenter drying room are respectively: 700-800 rpm, 700-1200 rpm, 700-800 rpm;
3) And a rolling procedure, namely rolling the dried viscose knitted fabric treated in the step 2) into a roll by a rolling machine at a speed of 20-25 m/min.
4) A jet printing process, namely jet printing reactive dye jet printing ink with set color on viscose knitted fabrics on Atexco Honghua VEGA 3180S jet printing equipment; for mesh knitted fabric (mesh-carrying knitted fabric), because the mesh knitted fabric is woven by adopting strong twisted filaments or yarns, and each yarn knot position is compact and thicker due to yarn twisting, dye is not easy to permeate, and the yarn knots are easy to whiten or lighten due to conventional jet printing, the jet printing of the dark and light mesh-like knitted fabric is carried out by adopting a 2-time jet printing mode of firstly jet printing one lightest color in the design of the reverse side of the knitted fabric and then jet printing other colors of patterns on the front side of the knitted fabric; the ink jet printing process parameters are that the ink quantity is 200-400 pl, a special density curve of the viscose knitted fabric which is specially made by self is set in RIP software, the special density curve of the viscose knitted fabric which is specially made by self is selected for the relative color and density curve, an ICC equipment characteristic file special for the viscose knitted fabric which is specially made by self is selected for an ICC profile of a printer, the printing pass number is 508-3 pass, the printing speed is 50 m/h, the distance between a nozzle and a fabric is 3.5 mm, the resolution is 400 pixels/inch, and the drying temperature is 50-55 ℃; the working environment temperature is 23-25 ℃ and the relative humidity is 55-75%.
5) And a steaming fixation procedure, namely adopting continuous closed steaming fixation by a steamer, wherein the technological parameters are as follows: steaming temperature is 100-103 ℃, steaming time is 15 minutes, and direct steam flow is 200-210 kg/h. Because the direct steam flow is relatively large, in order to prevent the top in the steamer from dripping water under high humidity, the product quality is influenced (the temperature of the top plate of the steamer is too high, the humidity in the steamer is too low, the color development of the knitted fabric after jet printing in the steaming process is poor, the temperature of the top plate of the steamer is too low, and the dripping water of the top plate of the steamer is easy to cause), and therefore, the temperature of the top plate of the steamer (the uppermost layer of stainless steel plate in the steamer is controlled to be 85-90 ℃.
6) And a washing procedure, namely washing by adopting a rope-shaped washing machine, sewing and washing the front surface of the viscose knitted fabric inwards along the warp-wise cloth edge, avoiding the front surface of the viscose knitted fabric from being scratched, and washing by adopting repeated spraying and water draining, and comprising the following steps of:
6.1 Cold water cleaning
The floating color and the paste on the surface of the viscose knitted fabric are removed by cold water washing, and the operation method is as follows: before washing, folding the front surface of the viscose fiber knitted fabric (knitted fabric) in the warp direction, and sewing with a special sewing machine every 60-80 cm, wherein the edge can not exceed 1.5cm, so that the front surface of the fabric is prevented from being scratched during rope washing; and (3) putting a proper amount of cold water into the rope-shaped rinsing machine, when the water level exceeds the steam pipe and the temperature controller probe, opening a spraying device above the rope-shaped rinsing machine, starting the rope-shaped rinsing machine, putting the sewn knitted fabrics (viscose knitted fabrics) into the rope-shaped rinsing machine one by one in sequence, tying two ends of each knitted fabric together, and putting the common medium-sized rope-shaped rinsing machine into 8-12 strips for cleaning. The knitted fabric is cleaned by a rope-shaped rinsing machine, and the specific technological parameters are as follows: at normal temperature, the cloth feeding speed is 20-30 m/min, the cleaning speed is 12-15 m/min, the cold water cleaning time is 20-25 min, and after the paste is fully swelled and the float color is fully cleaned, the water is discharged, sprayed and washed;
6.2 First warm water cleaning
In order to prevent the knitted fabric from being stained due to the fact that the floating color is not removed in the first cold water washing process, warm water washing is needed to ensure the product quality, and the operation steps are as follows: after the step 6.1), opening a water inlet valve of the rope-shaped rinsing machine after the cold water washing dirty water is drained completely, and adding 0.2-0.5% of detergent (generally 0.1-0.2% of detergent when the light color is washed) into a trough of the rope-shaped rinsing machine; when the water level exceeds that of a steam pipe and a temperature controller probe, a spraying device above the rope-shaped rinsing machine is opened, a steam valve of the rope-shaped rinsing machine is opened for heating, when the water level exceeds that of the knitted fabric in a cylinder of the rope-shaped rinsing machine, the rope-shaped rinsing machine is started for washing, and after washing is finished, heating steam is closed, and water is discharged for spraying and flushing; wherein the cleaning temperature is 60-70 ℃, the cleaning speed is 12-15 m/min, and the warm water cleaning time is 15-25 min;
6.3 Hot water cleaning
The method aims at ensuring the color fastness of water washing and comprises the following operation steps: after the step 6.2), after the dirty water is completely drained, opening a water inlet valve of the rope-shaped rinsing machine, adding 0.5-0.7% of detergent into a trough of the rope-shaped rinsing machine, opening a spraying device above the rope-shaped rinsing machine when the water level exceeds a steam pipe and a temperature controller probe, opening a steam valve of the rope-shaped rinsing machine for heating, starting the rope-shaped rinsing machine for washing when the water level exceeds the knitted fabric in a cylinder of the rope-shaped rinsing machine, and closing heating steam after washing, draining water and spraying for flushing. Wherein the hot water cleaning temperature is 90-100 ℃, the cleaning speed is 12-15 m/min, and the cleaning time is 15-25 minutes;
6.4 Cleaning with warm water, regulating pH value, and fixing color
After the step 6.3) is finished, after the dirty water is drained, opening a water inlet valve of the rope-shaped rinsing machine, when the water level exceeds a steam pipe and a temperature controller probe, opening a spraying device above the rope-shaped rinsing machine, opening a steam valve of the rope-shaped rinsing machine for heating, when the water level exceeds two thirds of the cloth accumulation height of knitted cloth in a cylinder of the rope-shaped rinsing machine, starting the rope-shaped rinsing machine for washing, spraying and draining water, removing residual detergent during hot water washing, and closing heating steam. The specific process parameters are as follows: warm water is used for cleaning at the temperature of 45-50 ℃, the cleaning speed is 12-15 m/min, the cleaning time is 5-8 min, heating steam is closed, 100 kg of water is drained and left, 0.05-0.1% of citric acid and 0.4-0.7% of color fixing agent are added;
6.5 Soft finishing)
After the step 6.4), preparing the softener, the silicone oil and the antistatic agent according to the technological requirements, adding the mixture into a charging tank of a rope-shaped rinsing machine, uniformly mixing, and starting the rope-shaped rinsing machine, wherein the specific technology is as follows: after the step 6.4), adding 0.6 to 0.8 percent of softening agent, 0.2 to 0.4 percent of silicone oil, 0.6 to 0.8 percent of antistatic agent, soaking for 5 to 8 minutes, and taking out from a cylinder.
7) A drying process, comprising the following steps:
7.1 Dewatering at a speed of 800-900 rpm by adopting a centrifugal dewatering machine;
7.2 After the step 7.1), adopting a roller dryer to dry the knitted fabric at the speed of 32 revolutions per minute and the temperature of 70-100 ℃, and stopping the machine to finish the knitted fabric for 1-2 times in the drying process so as to reduce the drying wrinkles.
Example 3:
in this embodiment, a high-permeability digital ink-jet printing process for a knitted fabric is used for processing a mulberry silk knitted fabric, and the steps of inspecting a blank cloth after pretreatment of printing, sizing, tentering, rolling, jet printing, steaming fixation, washing and drying are specifically as follows:
1) A step of inspecting the embryo cloth treated before jet printing, which is to inspect the mulberry silk knitted fabric embryo cloth treated in a conventional treatment mode before jet printing in the field;
2) Sizing and tentering processes, which comprise the following specific steps:
2.1 Pulping; the composition by mass percent is as follows: 3 to 5 percent of anhydrous sodium sulphate, 1 to 6 percent of urea, 2 to 5 percent of urea substitute, 1 to 5 percent of sodium bicarbonate, 1.5 to 3.0 percent of sodium alginate, 0.5 to 2 percent of dye-proofing salt S,1 to 3 percent of defoaming penetrating agent AP, 0.1 to 0.15 percent of dispersing chelating agent, 1.5 to 2 percent of ATP-30 and the balance of water, and uniformly stirring the slurry on a pulping machine into paste, wherein the urea substitute adopts 2 to 5 percent of N-methylpyrrolidone; the concrete operation is (single metering, water adding amount is 1/2-2/3 of the size mixing barrel of the stirrer): at normal temperature, water is put into a pulping barrel of a pulping machine, a dispersing chelating agent is added, the stirring machine is placed in a low-speed gear 1430+/-50 r/min, and stirring is carried out for 1-3 min, so that the water quality hardness is reduced; placing the pulp mixing barrel at an eccentric position, starting a high-speed gear 2850+/-50 revolutions per minute of a stirrer to stir, forming up-and-down vortexes in the pulp mixing barrel, sequentially and slowly adding sodium alginate, sodium bicarbonate (commonly known as sodium bicarbonate), anhydrous sodium sulfate, urea substitutes, anti-dye salt S and defoaming penetrating agent AP, and finally slowly adding ATP-30 to avoid that a large amount of bubbles generated by the stirring machine cause paste to flow out of the pulp mixing barrel; firstly, stirring alternately for about 30 minutes according to a high speed gear and a low speed gear every 5-6 minutes; fully stirring at a low speed of 1380-1480 rpm for 120-160 min and standing for later use; and pay attention to controlling the pulping temperature not to exceed 50 ℃;
2.2 Weft finishing: correcting or eliminating the weft inclination existing in the mulberry silk knitted fabric to be processed on a weft straightening machine through mechanical finishing, avoiding influencing jet printing quality, and straightening weft with the following technological parameters: the weft slope is controlled within +/-1.5 percent, and the weft straightening speed is 13-18 meters/min;
2.3 Sizing: uniformly padding the pasty slurry on the mulberry silk knitted fabric subjected to weft finishing treatment by a diagonal padder of a tentering setting machine; in sizing, the technological parameters are as follows: the temperature is 155-165 ℃, the speed of the vehicle is 13-18 m/min, the overfeeding rate is 7-20%, the rolling liquid rate is 90-95%, and the roller pressure is 0.35-0.4 MPa;
2.4 Tentering, namely, after the step 2.3), stretching the mulberry silk knitted fabric by 30-40% in the warp direction and 20-25% in the weft direction through a tentering setting machine; the technological parameters during tentering are as follows: the temperature of the stenter drying room is 155-165 ℃, the shaping speed of the stenter is 13-18 m/min, and the speeds of five groups of circulating fans in the stenter drying room are respectively: 500-700 rpm, 700-800 rpm, 500-700 rpm;
3) And a rolling procedure, namely rolling the dried viscose knitted fabric treated in the step 2) into a roll by a rolling machine at a speed of 13-18 m/min.
4) A jet printing process, namely jet printing reactive dye jet printing ink with set color on the mulberry silk knitted fabric on Atexco Honghua VEGA 3180S jet printing equipment; for silk (mulberry silk) mesh knitted fabric (knitted fabric with meshes), as strong twisting silk is adopted for weaving, dye is not easy to permeate, silk turnover is easy to occur, and each yarn knot position is compact and thicker due to yarn twisting, and dye is not easy to permeate, the yarn knot position is easy to whiten or lighten due to conventional jet printing, so that the jet printing of the dark and light mesh mulberry silk knitted fabric is carried out in a mode of firstly jet printing one of the lightest colors in the design of the reverse side of the knitted fabric and then jet printing other colors of patterns on the front side of the knitted fabric for 2 times; the inkjet printing process parameters are: setting printing intention as saturation in RIP software, selecting a self-made density curve special for the mulberry silk knitted fabric by a density curve, selecting a self-made ICC equipment characteristic file special for the mulberry silk knitted fabric by a printer ICC profile, printing pass number of 600-3 pass, printing speed of 45 m/h, nozzle-fabric distance of 3.5 mm, resolution of 400 pixels/inch and drying temperature of 50-55 ℃; the working environment temperature is 23-25 ℃ and the relative humidity is 55-75%.
5) And a steaming fixation procedure, namely adopting continuous closed steaming fixation by a steamer, wherein the technological parameters are as follows: the steaming temperature is 101-103 ℃, the steaming time is 12 minutes, and the direct steam flow is 185-195 kg/h. Because the direct steam flow is relatively large, in order to prevent the top in the steamer from dripping water under high humidity, the product quality is influenced (the temperature of the top plate of the steamer is too high, the humidity in the steamer is too low, the color development of the knitted fabric after jet printing in the steaming process is poor, the temperature of the top plate of the steamer is too low, and the dripping water of the top plate of the steamer is easy to cause), and therefore, the temperature of the top plate of the steamer (the uppermost layer of stainless steel plate in the steamer is controlled to be 88-93 ℃).
6) And a washing procedure, namely washing by adopting a rope-shaped washing machine, sewing and washing the front surface of the mulberry silk knitted fabric inwards along the warp-wise cloth edge, avoiding the front surface of the mulberry silk knitted fabric from being scratched, and washing by adopting repeated spraying and water draining, wherein the washing procedure comprises the following steps of:
6.1 Cold water cleaning
The method for removing the floating color and the paste on the surface of the mulberry silk knitted fabric by washing with cold water comprises the following steps: the front surface of the mulberry silk knitted fabric (knitted fabric) is folded in half along the warp direction before washing, a special sewing machine is used for sewing every 60-80 cm, the edge can not exceed 1.5cm, and the front surface of the fabric is prevented from being scratched during rope washing; when the water level exceeds the steam pipe and the temperature controller probe, a spraying device above the rope-shaped rinsing machine is opened, the rope-shaped rinsing machine is started, the sewn mulberry silk knitted fabrics are sequentially placed into the rope-shaped rinsing machine one by one, each mulberry silk knitted fabric is tied end to end, generally, 8-12 medium-sized rope-shaped rinsing machines are placed into the rope-shaped rinsing machine for cleaning, the length of each end-to-end mulberry silk knitted fabric is about 40-50 meters (namely, the length of each fabric piece), and 20-24 large-sized rope-shaped rinsing machines are placed into each cylinder (about 800-1200 meters). The knitted fabric is cleaned by a rope-shaped rinsing machine, and the specific technological parameters are as follows: at normal temperature, the cloth feeding speed is 20-30 m/min, the cleaning speed is 12-15 m/min, the cold water cleaning time is 20-25 min, and after the paste is fully swelled and the float color is fully cleaned, the water is discharged, sprayed and washed;
6.2 First warm water cleaning
In order to prevent the knitted fabric from being stained due to the fact that the floating color is not removed in the first cold water washing process, warm water washing is needed to ensure the product quality, and the operation steps are as follows: after the step 6.1), opening a water inlet valve of the rope-shaped rinsing machine after the cold water washing dirty water is drained completely, and adding 0.05-0.15% of detergent (generally 0.05-0.1% of detergent when the light color is washed) into a trough of the rope-shaped rinsing machine; when the water level exceeds that of a steam pipe and a temperature controller probe, a spraying device above the rope-shaped rinsing machine is opened, a steam valve of the rope-shaped rinsing machine is opened for heating, when the water level exceeds that of the knitted fabric in a cylinder of the rope-shaped rinsing machine, the rope-shaped rinsing machine is started for washing, and after washing is finished, heating steam is closed, and water is discharged for spraying and flushing; wherein the cleaning temperature is 60-70 ℃, the cleaning speed is 12-15 m/min, and the warm water cleaning time is 15-18 min;
6.3 Hot water cleaning
The method aims at ensuring the color fastness of the washing of the mulberry silk knitted fabric, after the step 6.2), opening a water inlet valve of the rope-shaped washing machine after the warm water washing dirty water is drained completely, adding 0.3-0.5% of detergent into a trough of the rope-shaped washing machine, opening a spraying device above the rope-shaped washing machine when the water level exceeds a steam pipe and a temperature controller probe, opening a steam valve of the rope-shaped washing machine for heating, starting the rope-shaped washing machine for washing when the water level exceeds the knitted fabric in a cylinder of the rope-shaped washing machine, closing heating steam after washing, draining water and spraying for flushing. Wherein the hot water cleaning temperature is 95-100 ℃, the cleaning speed is 12-15 m/min, and the cleaning time is 15-25 minutes;
6.4 Cleaning with warm water, regulating pH value, and fixing color
After the step 6.3) is finished, after the dirty water is drained, opening a water inlet valve of the rope-shaped rinsing machine, when the water level exceeds a steam pipe and a temperature controller probe, opening a spraying device above the rope-shaped rinsing machine, opening a steam valve of the rope-shaped rinsing machine for heating, when the water level exceeds two thirds of the cloth accumulation height of knitted cloth in a cylinder of the rope-shaped rinsing machine, starting the rope-shaped rinsing machine for washing, spraying and draining water, removing residual detergent during hot water washing, and closing heating steam. The specific process parameters are as follows: the warm water is used for cleaning at the temperature of 45-50 ℃, the cleaning speed is 12-15 m/min, the cleaning time is 5-8 min, the heating steam is closed, 100 kg of water is left after water is drained, 0.05-0.1% of citric acid and 0.2-0.4% of color fixing agent are added;
6.5 Soft finishing)
After the step 6.4), preparing the softener, the silicone oil and the antistatic agent according to the technological requirements, adding the mixture into a charging tank of a rope-shaped rinsing machine, uniformly mixing, and starting the rope-shaped rinsing machine, wherein the specific technology is as follows: after the step 6.4), adding 0.2 to 0.4 percent of softening agent, 0.4 to 0.7 percent of silicone oil, 0.6 to 0.8 percent of antistatic agent, soaking for 5 to 8 minutes, and taking out from a cylinder at normal temperature.
7) A drying process, comprising the following steps:
7.1 Dewatering at a speed of 800-900 rpm by adopting a centrifugal dewatering machine;
7.2 After the step 7.1), adopting a roller dryer to dry the knitted fabric at the speed of 32 revolutions per minute and the temperature of 70-100 ℃, and stopping the machine to finish the knitted fabric for 1-2 times in the drying process so as to reduce the drying wrinkles.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent variation, etc. of the above embodiment according to the technical matter of the present invention fall within the scope of the present invention.
Claims (4)
1. A high-permeability digital ink-jet printing process for knitted fabrics is used for processing knitted fabrics and is characterized in that: the method comprises the following steps:
1) A step of inspecting the blank cloth treated before jet printing;
2) Sizing and tentering processes are completed by adopting weft finishing, tentering, shaping and drying combined equipment, and comprise the following specific steps:
2.1 Pulping; uniformly stirring the set slurry on a pulping machine to form paste, wherein the specific operation is as follows: adding quantitative water into a pulp mixing barrel of a pulping machine at normal temperature, adding a dispersing chelating agent, and placing the stirring machine in a low-speed gear 1430+/-50 r/min for stirring for 1-3 min; placing a pulp mixing barrel at an eccentric position, starting a stirrer to stir at a high speed gear 2850+/-50 revolutions per minute, enabling the pulp mixing barrel to form an up-down vortex, sequentially adding sodium alginate, sodium bicarbonate, sodium sulfate, urea substitutes, anti-salt and defoaming penetrating agent AP, and finally adding ATP-30; firstly, alternately stirring for 30 minutes according to a high speed gear and a low speed gear every 5-6 minutes; fully stirring at a low speed of 1380-1480 rpm for 120-160 min and standing for later use;
2.2 Weft finishing: correcting or eliminating the weft skew of the knitted fabric to be processed on a weft straightening machine through mechanical finishing, wherein the weft straightening process comprises the following parameters: the weft slope is controlled within +/-1.5%, the weft finishing speed of the cotton knitted fabric and the viscose knitted fabric is 20-25 m/min, and the weft finishing speed of the mulberry silk knitted fabric is 13-18 m/min;
2.3 Sizing: uniformly padding the pasty slurry on the knitted fabric subjected to weft finishing treatment by a diagonal padder of a tentering setting machine; the sizing process parameters are as follows: the temperature is 155-165 ℃, overfeeding is 7-20%, the rolling liquid rate is 90-95%, and the roller pressure is 0.35-0.4 MPa; and the sizing speed of the cotton knitted fabric and the viscose knitted fabric is 20-25 m/min, and the sizing speed of the mulberry silk knitted fabric is 13-18 m/min;
2.4 Tentering: after the step 2.3), stretching the warp direction of the knitted fabric by 30-40% and the weft direction by 20-25% by a tentering setting machine; the technological parameters of the tentering of the cotton knitted fabric and the viscose knitted fabric are as follows: the temperature of a drying room of the tentering setting machine is 155-165 ℃, the tentering speed is 20-25 m/min, and the speeds of five groups of circulating fans of the drying room are respectively: 700-800 rpm, 700-1200 rpm, 700-800 rpm; the tentering technological parameters of the mulberry silk knitted fabric are as follows: the temperature of a drying room of the tentering setting machine is 155-165 ℃, the tentering speed is 13-18 m/min, and the speeds of five groups of circulating fans of the drying room are respectively: 500-700 rpm, 700-800 rpm, 500-700 rpm;
3) A rolling procedure;
4) Spray printing process: jet printing reactive dye jet printing ink with set color on the knitted fabric on the jet printing equipment; when the jet printing is performed on the dark light and thin mesh knitted fabric, the jet printing is performed on the reverse side of the knitted fabric in a mode of firstly jet printing one of the lightest colors in the design, and then jet printing the other colors of the patterns on the front side for 2 times;
5) Steaming and fixing color;
6) A washing process, adopting a rope-shaped washing machine for washing, comprising the following steps:
6.1 Cold water cleaning:
the knitted fabric is cleaned by a rope-shaped rinsing machine, and the specific technological parameters are as follows: at normal temperature, the cloth feeding speed is 20-30 m/min, the cleaning speed is 12-15 m/min, the cold water cleaning time is 20-25 min, and after the paste is fully swelled and the float color is fully cleaned, the water is discharged, sprayed and washed;
6.2 First warm water washing: after the step 6.1), evacuating the sewage in the rope-shaped rinsing machine, feeding water, adding a cleaning agent, and cleaning; then the heating steam is closed, and the water is discharged, sprayed and washed; the technological parameters are as follows: 0.05-0.5% of detergent, cleaning temperature of 60-70 ℃, cleaning speed of 12-15 m/min and cleaning time of 15-25 min;
6.3 Hot water cleaning: after the step 6.2), evacuating the sewage in the rope-shaped rinsing machine, feeding water, adding a cleaning agent, and cleaning; then the heating steam is closed, and the water is discharged, sprayed and washed; the technological parameters are as follows: 0.3 to 0.7 percent of detergent, 90 to 100 ℃ of cleaning temperature, 12 to 15 meters per minute of cleaning speed and 15 to 30 minutes of cleaning time;
6.4 After the step 6.3), after the sewage is emptied, water is fed and is cleaned for 5-10 minutes under the conditions that the cleaning temperature is 45-50 ℃ and the cleaning speed is 12-15 m/min, then water is drained until 100 kg of water is remained, 0.05-0.1% of citric acid is added to adjust the PH value, and 0.2-0.7% of color fixing agent is added to fix color;
6.5 Soft finishing:
after the step 6.4), the softener, the silicone oil and the antistatic agent are prepared according to the technological requirement, and are added into a charging tank of a rope-shaped rinsing machine to be uniformly mixed, and the rope-shaped rinsing machine is started; the specific technological parameters during soft finishing are as follows: normal temperature, softening agent 0.2-1.3%, silicone oil 0.2-0.7%, antistatic agent 0.4-0.8%, soaking time 5-10 min, taking out of the cylinder;
7) A drying procedure;
the sizing agent used in the sizing and tentering processes comprises the following components in percentage by mass: 3 to 5 percent of anhydrous sodium sulphate, 1 to 6 percent of urea, 2 to 5 percent of urea substitute, 1 to 5 percent of sodium bicarbonate, 1.5 to 3.0 percent of sodium alginate, 0.5 to 2 percent of dye-resistant salt S,1 to 3 percent of defoaming penetrating agent AP, 0.1 to 0.15 percent of dispersing chelating agent, 1.5 to 2 percent of ATP-30 and the balance of water; wherein, 1-2% of N-methyl pyrrolidone and 1-3% of polyethylene glycol are adopted as the urea substitutes for cotton knitted fabric and viscose knitted fabric treatment; the urea substitute for mulberry silk knitted fabric treatment adopts 2-5% of N-methyl pyrrolidone.
2. The process for high-permeability digital inkjet printing of knitted fabrics according to claim 1, wherein the process is characterized in that: the rolling procedure is to roll the knitted fabric processed in the step 2) into rolls through a rolling machine; the speed of the rolling machine is 13-18 m/min when the mulberry silk knitted fabric is processed, 20-25 m/min when the cotton knitted fabric and the viscose knitted fabric are processed, and the cotton knitted fabric is required to be subjected to width trimming according to the technological requirements by a trimming device of the rolling machine.
3. The process for high-permeability digital inkjet printing of knitted fabrics according to claim 1, wherein the process is characterized in that: the steaming fixation procedure adopts continuous airtight steaming fixation through a steamer, and the technological parameters are as follows:
cotton knitted fabrics and viscose knitted fabrics: the steaming temperature is 100-103 ℃, the steaming time is 15 minutes, the direct steam flow is 200-210 kg/h, and the temperature of the top plate of the steamer is controlled at 85-90 ℃;
mulberry silk knitted fabric: the steaming temperature is 101-103 ℃, the steaming time is 12 minutes, the direct steam flow is 185-195 kg/h, and the temperature of the top plate of the steamer is controlled at 88-93 ℃.
4. The process for high-permeability digital inkjet printing of knitted fabrics according to claim 1, wherein the process is characterized in that: the drying procedure comprises the following steps:
7.1 Dewatering at a speed of 800-900 rpm by adopting a centrifugal dewatering machine;
7.2 After the step 7.1), adopting a roller dryer to dry the knitted fabric at the speed of 32 revolutions per minute and the temperature of 70-100 ℃, and stopping the machine to finish the knitted fabric for 1-2 times in the drying process.
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