CN116463869A - Sizing-free steaming-washing-free pure cotton active digital printing fabric and preparation method thereof - Google Patents
Sizing-free steaming-washing-free pure cotton active digital printing fabric and preparation method thereof Download PDFInfo
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- 239000004744 fabric Substances 0.000 title claims abstract description 123
- 238000007639 printing Methods 0.000 title claims abstract description 57
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 229920000742 Cotton Polymers 0.000 title claims description 29
- 238000004519 manufacturing process Methods 0.000 title abstract description 6
- 238000000034 method Methods 0.000 claims abstract description 35
- 238000007493 shaping process Methods 0.000 claims abstract description 24
- 230000004048 modification Effects 0.000 claims abstract description 23
- 238000012986 modification Methods 0.000 claims abstract description 23
- 238000005406 washing Methods 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000009990 desizing Methods 0.000 claims abstract description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 30
- 125000002091 cationic group Chemical group 0.000 claims description 22
- 238000009991 scouring Methods 0.000 claims description 19
- 238000001035 drying Methods 0.000 claims description 16
- 239000003607 modifier Substances 0.000 claims description 14
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 10
- 238000005096 rolling process Methods 0.000 claims description 5
- 238000004061 bleaching Methods 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 claims description 3
- 150000003863 ammonium salts Chemical group 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- KVKFRMCSXWQSNT-UHFFFAOYSA-N n,n'-dimethylethane-1,2-diamine Chemical compound CNCCNC KVKFRMCSXWQSNT-UHFFFAOYSA-N 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 15
- 238000004513 sizing Methods 0.000 abstract description 14
- 239000003513 alkali Substances 0.000 abstract description 11
- 238000004043 dyeing Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 9
- 239000002351 wastewater Substances 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000000243 solution Substances 0.000 description 14
- 239000011734 sodium Substances 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 6
- 239000002002 slurry Substances 0.000 description 6
- 239000000975 dye Substances 0.000 description 5
- 239000012535 impurity Substances 0.000 description 5
- 150000001768 cations Chemical class 0.000 description 4
- 238000012805 post-processing Methods 0.000 description 4
- 239000001488 sodium phosphate Substances 0.000 description 4
- 229910000162 sodium phosphate Inorganic materials 0.000 description 4
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 4
- 238000010025 steaming Methods 0.000 description 4
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 4
- 239000012752 auxiliary agent Substances 0.000 description 3
- 238000004040 coloring Methods 0.000 description 3
- 239000000976 ink Substances 0.000 description 3
- 239000004094 surface-active agent Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 2
- 150000001450 anions Chemical class 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 239000007844 bleaching agent Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000004945 emulsification Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000008233 hard water Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- 239000000985 reactive dye Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000004289 sodium hydrogen sulphite Substances 0.000 description 2
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 2
- 235000010265 sodium sulphite Nutrition 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229920002201 Oxidized cellulose Polymers 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- AEMOLEFTQBMNLQ-BKBMJHBISA-N alpha-D-galacturonic acid Chemical compound O[C@H]1O[C@H](C(O)=O)[C@H](O)[C@H](O)[C@H]1O AEMOLEFTQBMNLQ-BKBMJHBISA-N 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000008139 complexing agent Substances 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000000986 disperse dye Substances 0.000 description 1
- 238000011978 dissolution method Methods 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007641 inkjet printing Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 229940107304 oxidized cellulose Drugs 0.000 description 1
- 239000001814 pectin Substances 0.000 description 1
- 229920001277 pectin Polymers 0.000 description 1
- 235000010987 pectin Nutrition 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920000191 poly(N-vinyl pyrrolidone) Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000012224 working solution Substances 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
- D06P5/22—Effecting variation of dye affinity on textile material by chemical means that react with the fibre
- D06P5/225—Aminalization of cellulose; introducing aminogroups into cellulose
-
- 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
- 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
- D06P5/30—Ink jet printing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
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 preparation method is characterized in that the gray fabric to be printed is subjected to modification treatment, so that the gray fabric has dyeing conditions, the gray fabric can be directly printed on a machine after modification treatment, a sizing process is omitted, meanwhile, the water washing desizing is not needed after printing, a water washing process is omitted, on one hand, the water resource consumption is reduced, on the other hand, the waste water emission is reduced, and the emission of saline-alkali components is reduced, so that the method is beneficial to resource conservation and environmental protection; meanwhile, the grey cloth after modification is directly printed on a machine, and after printing is finished, the shaping is performed, the working procedure is simple, and the production efficiency can be improved under the condition of ensuring the printing effect.
Description
Technical Field
The invention relates to the technical field of digital printing, in particular to a sizing-free and steaming-washing-free pure cotton active digital printing fabric and a preparation method thereof.
Background
Reactive digital printing is a printing formed by penetration of reactive dyes (inks) into a fabric. It contains active groups capable of reflecting with fiber molecules, and during dyeing and printing, the active genes of active fuel are combined with the fiber molecules to form a whole. Along with the continuous improvement of the printing speed of the digital printing machine, the popularization of the digital printing process is also more and more extensive, and the personalized requirements of people are greatly met.
At present, when the conventional printing machine uses active ink to directly print, the fabric must be subjected to sizing treatment, namely, a pretreatment agent, urea, sodium bicarbonate, anti-dyeing salt and other additives are added into water, stirred to a transparent viscous state to prepare active digital base paste, and the base paste is processed on the fabric through a padding process.
However, the bottom slurry in the sizing treatment contains a large amount of saline-alkali components, on one hand, the waste water discharged from the washing after printing contains a large amount of saline-alkali, so that the salinity of the waste water is high, the emission of ammonia nitrogen is increased, the emission of the saline-alkali components is greatly increased, and adverse effects are caused to the environment; on the other hand, after printing, a large amount of water resources are used during washing water desizing, so that the water resources are wasted, and resource conservation is not facilitated.
Disclosure of Invention
The invention provides a sizing-free and steaming-washing-free pure cotton active digital printing fabric and a preparation method thereof, wherein salt-free alkali-free printing can be realized by the sizing-free pure cotton active digital printing fabric, and meanwhile, washing water desizing after printing can be avoided, so that wastewater discharge is reduced, and water resource waste is reduced.
According to a first aspect, the invention provides a preparation method of a sizing-free and steaming-washing-free pure cotton active digital printing fabric, which comprises the following steps:
modifying the grey cloth to be printed through the modifying solution to obtain modified grey cloth;
printing the modified grey cloth on a machine to obtain printed grey cloth;
shaping the printing grey cloth, and rolling to obtain a finished product.
In one embodiment, the modifying solution is a cationic modifying solution, and is prepared from a cationic modifier, caustic soda and deionized water.
In one embodiment, the cationic modifier is a biquaternary ammonium salt crosslinkable cationic modifier synthesized by using dimethyl ethylenediamine and epichlorohydrin as raw materials.
In one embodiment, the cationic modifier concentration in the modifying solution is 30-90g/L and the caustic soda concentration is 10-30g/L.
In one embodiment, the modification treatment comprises pre-treating the grey cloth to be printed, then placing the grey cloth into a padding machine filled with a modification solution, and padding the grey cloth, wherein the pre-treating comprises sequentially desizing, scouring and bleaching the grey cloth to be printed.
In one embodiment, the padding has a rolling redundancy of 100% and a bath ratio of 1:7-1:10.
In one embodiment, the modification treatment further comprises the steps of wrapping and sealing the padded grey cloth to be printed, then placing the packed grey cloth in a normal-temperature environment for cold stacking, placing the packed grey cloth in open width for washing water, and then performing preliminary shaping and drying to form the cationic modified grey cloth, wherein the preliminary shaping and drying is that the grey cloth is dried at a set temperature by using a dryer after shaping by a shaping machine.
In one embodiment, the stacking time of the padded grey cloth to be printed in the normal temperature environment is 12-24 hours.
In one embodiment, the shaping the printed grey cloth comprises post-processing and drying the grey cloth, wherein the post-processing is tentering shaping to control the width, the gram weight, the weft skew and the shrinkage of the fabric, and the drying is to dry the grey cloth at a set temperature by using a dryer.
According to a second aspect, the invention provides a fabric prepared by a method for preparing a sizing-free and steaming-washing-free pure cotton active digital printing fabric.
According to the preparation method of the pure cotton active digital printing fabric free of sizing and steaming washing in the embodiment, the gray fabric to be printed is subjected to modification treatment, so that the gray fabric has dyeing conditions, the gray fabric can be directly printed on a machine after modification treatment, a sizing process is omitted, meanwhile, washing desizing is not needed after printing, a washing process is omitted, on one hand, water resource consumption is reduced, on the other hand, waste water emission is reduced, and accordingly, the emission of saline-alkali components is reduced, and resource conservation and environmental protection are facilitated; meanwhile, the grey cloth after modification is directly printed on a machine, and after printing is finished, the shaping is performed, the working procedure is simple, and the production efficiency can be improved under the condition of ensuring the printing effect.
Drawings
FIG. 1 is a flow chart of a method for preparing pure cotton reactive digital printing fabric free of sizing and steaming and washing.
Detailed Description
The invention will be described in further detail below with reference to the drawings by means of specific embodiments. Wherein like elements in different embodiments are numbered alike in association. In the following embodiments, numerous specific details are set forth in order to provide a better understanding of the present application. However, one skilled in the art will readily recognize that some of the features may be omitted, or replaced by other elements, materials, or methods in different situations. In some instances, some operations associated with the present application have not been shown or described in the specification to avoid obscuring the core portions of the present application, and may not be necessary for a person skilled in the art to describe in detail the relevant operations based on the description herein and the general knowledge of one skilled in the art.
Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments, and the operational steps involved in the embodiments may be sequentially exchanged or adjusted in a manner apparent to those skilled in the art. Accordingly, the description and drawings are merely for clarity of describing certain embodiments and are not necessarily intended to imply a required composition and/or order.
The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The terms "coupled" and "connected," as used herein, are intended to encompass both direct and indirect coupling (coupling), unless otherwise indicated.
Referring to fig. 1, the embodiment provides a method for preparing a sizing-free and steaming-washing-free pure cotton active digital printing fabric, which comprises the following steps:
step 101: modifying the grey cloth to be printed through the modifying solution to obtain modified grey cloth;
step 102: printing the modified grey cloth on a machine to obtain printed grey cloth, specifically, placing the modified grey cloth into an active digital printing machine loaded with disperse dye ink, and performing inkjet printing on the surface of the grey cloth with a preset pattern to obtain printed grey cloth;
step 103: shaping the printing grey cloth, and rolling to obtain a finished product.
The raw materials used in the embodiment are pure cotton fabrics, and after the pure cotton fibers are modified by cations, the pure cotton fibers have cations, and the common reactive dye has anions, so that the cations can adsorb the anions, the dye coloring rate and the dye coloring speed in the dyeing process are improved very well, and the dyeing fastness is also very good; based on the principle, reactive printing is performed on cotton fabric, and the same principle of dye can be used for quick coloring and fixation. Therefore, the modified product can be directly subjected to digital reactive printing, the printing effect is not affected, and meanwhile, the steaming fixation procedure can be avoided, and the production efficiency is improved.
Because the sizing treatment is not needed before printing, the washing desizing procedure does not exist after printing, the process flow of gray fabric printing is further simplified, the printing effect and quality are ensured, and the printing efficiency is improved.
It can be understood that, because the existing sizing slurry contains a large amount of saline-alkali components, on one hand, after sizing treatment is carried out on the grey cloth, the grey cloth contains the saline-alkali components, and after washing, the discharged wastewater contains a large amount of saline-alkali components, which can cause a certain influence on the environment; on the other hand, the used slurry which is not used again still contains saline-alkali components, and the discharged slurry also has certain influence on the environment, which is not beneficial to environmental protection.
Before the sizing finished product is used, the printed fabric subjected to sizing treatment needs to be subjected to washing desizing treatment so as to avoid the influence of residual sizing on the use feeling (such as softness) of the fabric, a large amount of water is needed for washing, and even more technical schemes need to carry out multi-program washing on the fabric, so that the consumption of water resources is undoubtedly increased, the resource saving is not facilitated, and the discharge amount of wastewater is increased due to the use of a large amount of water resources.
Based on the principle, in the embodiment, the modified solution is a cationic modified solution, and after the cotton fiber is subjected to cationic modification treatment, the dyeing efficiency and the dye utilization rate are improved, wherein the cationic modified solution is prepared from a cationic modifier, caustic soda and deionized water.
Preferably, in this embodiment, the cationic modifier is a biquaternary ammonium salt crosslinkable cationic modifier synthesized by using dimethyl ethylenediamine and epichlorohydrin as raw materials.
Further, in this embodiment, the concentration of the cationic modifier in the cationic modifier solution is 30-90g/L, and the concentration of the caustic soda is 10-30g/L.
In this embodiment, the modification treatment includes pre-treating the grey cloth to be printed, then placing the grey cloth into a padding machine containing a cationic modification solution, and padding the grey cloth, and the pre-treating includes sequentially subjecting the grey cloth to be printed to desizing, scouring and bleaching.
Specifically, the pretreatment aims to make the grey cloth have a white appearance, soft hand feeling and good permeability, and meet the requirements of subsequent dyeing, printing and finishing.
Since the raw fabric just produced contains the slurry, the slurry is desized from the surface of the raw fabric by a decomposition method or a dissolution method, and the desizing is achieved by preparing a solution containing at least one of an enzyme, an alkali, an oxidizing agent or an acid, and soaking the raw fabric with the solution.
Furthermore, after desizing is finished, the grey cloth may contain incompletely desized sizing agent and some natural impurities, and further desizing and impurity removal are needed, so that the scouring agent is used for scouring to remove residual sizing agent and most of natural impurities, the water absorption of the fabric is improved, and the penetration and expansion of dyes in the dyeing and printing process are facilitated.
In this embodiment, the scouring agent is a solution of caustic soda (NaOH) and scouring aid including surfactant and NaHCO 3 、Na 3 PO 4 、Na 2 SO 3 、Na 2 SiO 3 Complexing agents, and the like.
Because caustic soda can remove fatty acid, some components in cotton seed hulls and some inorganic salts, etc. in the pectin, nitrogenous substances and waxy substances at high temperature, the scouring auxiliary agent is beneficial to improving scouring effect, shortening scouring time, improving scouring quality and ensuring that the scouring fabric can meet the processing requirements of the following working procedures. For example, the surfactant is favorable for permeation of scouring agent and emulsification, and the common surfactant in the scouring process comprises sodium alkylbenzenesulfonate, red oil, peregal and the like; sodium silicate (Na) 2 SiO 3 ) Can be used forAdsorbing iron in the scouring liquid to prevent the fabric from generating rust and rusty spots; the product of impurity decomposition on cotton fiber can be adsorbed, and the redeposition of the decomposed products on the fabric can be prevented, so that the permeability and whiteness of the fabric are improved, and the hand feeling of the fabric can be influenced when the consumption is excessive; sodium sulfite (Na) 2 SO 3 ) The reduction effect is achieved, and the cotton fiber can be prevented from being damaged by oxidized cellulose generated by air entering during high-temperature scouring; can also be dissolved in alkali liquor after reacting with lignin, protein and pectic substance, and the dosage is about 3 g/L. Sodium bisulphite has the same effect, but the effect is not as good as that of sodium sulfite, so the star utilization of sodium bisulphite is correspondingly increased; sodium phosphate (Na) 3 PO 4 ) The device is mainly used for softening hard water, so that caustic soda in the scouring working solution is not consumed by the hard water, the scouring effect is improved, and the consumption of auxiliary agents can be saved. The calcium salt and magnesium salt generated by the sodium phosphate are not sticky, so the sodium phosphate can not adhere to fabrics, and the sodium phosphate also has certain osmosis and emulsification effects, and the dosage is generally 0.5-1.0 g/L. The specific production can be selected according to the requirements and the characteristics of each scouring auxiliary agent.
Further, most natural and artificial impurities on the grey cloth are removed after boiling off; in order to improve the whiteness of the grey cloth, the grey cloth needs to be further bleached to further remove pigment on the grey cloth, so that the grey cloth is more white. Specifically, in order to bleach the grey cloth by one of dipping, showering or rolling, the bleaching agent used in the bleaching process is an oxidizing agent such as NaClO or H 2 O 2 。
In this embodiment, the padding surplus rate is 100%, the bath ratio of the padding is 1:7-1:10, and the speed of the padding machine is 30m/min-40m/min during the padding.
In this embodiment, the modification treatment further includes a step of again treating the blank to be printed after padding to improve the effect of the modification treatment.
Better, because the operation of treating the grey cloth by the cold-stacking method is simple, the modification effect of the grey cloth is stable and ideal, and the embodiment adopts the cold-stacking method to improve the modification effect. Specifically, the package is sealed and then is placed in a normal temperature environment for treatment by a cold stacking method, flat washing water is carried out after stacking, and then preliminary shaping and drying are carried out to form the cation modified grey cloth, wherein the preliminary shaping and drying are that the grey cloth is dried at a set temperature by a dryer after the shaping of a shaping machine.
In this embodiment, the wrapping seal of the grey fabric to be printed is made of plastic film, and of course, the wrapping seal of the grey fabric to be printed can be made of other soft colorless materials, so that the cationic modifier can modify the grey fabric in a certain time.
Specifically, the drying temperature during preliminary shaping and drying is 90-105 ℃.
Of course, in other embodiments, the immersion method or the roll baking method may be selected to treat the padded fabric to enhance the effect of the modification treatment.
In this embodiment, the stacking time of the blank to be printed after padding is 12-24 hours under the normal temperature environment.
In this embodiment, the shaping the printed grey fabric includes post-processing and drying the grey fabric, where the post-processing is tentering shaping to control the width, gram weight, weft skew and shrinkage of the fabric, and the drying is that the grey fabric is dried at a set temperature by using a dryer, and the drying temperature is 90-105 ℃.
On the other hand, the embodiment provides the fabric prepared by the method for preparing the sizing-free steaming and washing pure cotton active digital printing fabric.
The foregoing description of the invention has been presented for purposes of illustration and description, and is not intended to be limiting. Several simple deductions, modifications or substitutions may also be made by a person skilled in the art to which the invention pertains, based on the idea of the invention.
Claims (10)
1. The preparation method of the sizing-free and steaming-washing-free pure cotton active digital printing fabric is characterized by comprising the following steps of:
modifying the grey cloth to be printed through the modifying solution to obtain modified grey cloth;
printing the modified grey cloth on a machine to obtain printed grey cloth;
shaping the printing grey cloth, and rolling to obtain a finished product.
2. The method for preparing the sizing-free and steaming-washing-free pure cotton active digital printing fabric as claimed in claim 1, wherein the modification solution is a cationic modification solution and is prepared from a cationic modifier, caustic soda and deionized water.
3. The method for preparing sizing-free and steaming-washing pure cotton active digital printing fabric as claimed in claim 2, wherein the cationic modifier is a biquaternary ammonium salt crosslinkable cationic modifier synthesized by using dimethyl ethylenediamine and epichlorohydrin as raw materials.
4. The method for preparing sizing-free and steaming-washing pure cotton active digital printing fabric according to claim 2, wherein the concentration of the cationic modifier in the modifying solution is 30-90g/L, and the concentration of caustic soda is 10-30g/L.
5. The method for preparing the sizing-free and steaming-washing-free pure cotton active digital printing fabric according to claim 1, wherein the modification treatment comprises the steps of pre-treating the grey cloth to be printed, putting the grey cloth into a padding machine filled with a modification solution, padding the grey cloth, and sequentially desizing, scouring and bleaching the grey cloth to be printed.
6. The method for preparing the sizing-free and steaming-washing-free pure cotton active digital printing fabric as claimed in claim 5, wherein the padding residual rate is 100%, and the padding bath ratio is 1:7-1:10.
7. The method for preparing the sizing-free steaming-washing-free pure cotton active digital printing fabric according to claim 5 or 6, wherein the modification treatment further comprises the steps of wrapping and sealing the padded grey cloth to be printed, then placing the padded grey cloth to be printed in a normal-temperature environment for cold piling, piling the grey cloth to be washed in an open width mode, performing preliminary shaping and drying to form cationic modified grey cloth, wherein the preliminary shaping and drying is that a shaping machine is used for shaping and then a dryer is used for drying the grey cloth at a set temperature.
8. The method for preparing the sizing-free and steaming-washing-free pure cotton active digital printing fabric as claimed in claim 7, wherein the stacking time of the padded grey fabric to be printed in a normal-temperature environment is 12-24h.
9. The method for preparing the sizing-free steaming-washing pure cotton active digital printing fabric according to claim 1, wherein the shaping of the printing grey cloth comprises the post-treatment and drying of the grey cloth, wherein the post-treatment is tentering shaping so as to control the breadth, the gram weight, the weft skew and the shrinkage of the fabric, and the drying is that the grey cloth is dried at a set temperature by using a dryer.
10. The fabric prepared by the method for preparing the sizing-free and steaming-washing-free pure cotton active digital printing fabric according to any one of claims 1 to 9.
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| CN202310313638.XA CN116463869A (en) | 2023-03-28 | 2023-03-28 | Sizing-free steaming-washing-free pure cotton active digital printing fabric and preparation method thereof |
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| CN202310313638.XA CN116463869A (en) | 2023-03-28 | 2023-03-28 | Sizing-free steaming-washing-free pure cotton active digital printing fabric and preparation method thereof |
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