CN114775261B - Open width pretreatment method for knitted fabric - Google Patents
Open width pretreatment method for knitted fabric Download PDFInfo
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- CN114775261B CN114775261B CN202210520549.8A CN202210520549A CN114775261B CN 114775261 B CN114775261 B CN 114775261B CN 202210520549 A CN202210520549 A CN 202210520549A CN 114775261 B CN114775261 B CN 114775261B
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- 239000004744 fabric Substances 0.000 title claims abstract description 89
- 238000002203 pretreatment Methods 0.000 title claims abstract description 17
- 238000010025 steaming Methods 0.000 claims abstract description 79
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 62
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 43
- 239000007788 liquid Substances 0.000 claims abstract description 43
- 238000010411 cooking Methods 0.000 claims abstract description 24
- 108090000790 Enzymes Proteins 0.000 claims abstract description 19
- 102000004190 Enzymes Human genes 0.000 claims abstract description 19
- 238000007670 refining Methods 0.000 claims abstract description 19
- 230000000149 penetrating effect Effects 0.000 claims abstract description 13
- 238000004061 bleaching Methods 0.000 claims abstract description 12
- 239000004094 surface-active agent Substances 0.000 claims abstract description 11
- 241001122767 Theaceae Species 0.000 claims abstract description 10
- 239000001397 quillaja saponaria molina bark Substances 0.000 claims abstract description 10
- 229930182490 saponin Natural products 0.000 claims abstract description 10
- 150000007949 saponins Chemical class 0.000 claims abstract description 10
- 229920000742 Cotton Polymers 0.000 claims description 25
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 20
- 229940088598 enzyme Drugs 0.000 claims description 18
- 239000004115 Sodium Silicate Substances 0.000 claims description 11
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 11
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 11
- 108010059892 Cellulase Proteins 0.000 claims description 10
- 229940106157 cellulase Drugs 0.000 claims description 10
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 10
- 238000005406 washing Methods 0.000 claims description 9
- 229920000191 poly(N-vinyl pyrrolidone) Polymers 0.000 claims description 5
- 239000007844 bleaching agent Substances 0.000 claims description 4
- -1 polyoxyethylene lauryl ether sulfate Polymers 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 22
- 230000009172 bursting Effects 0.000 abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 abstract description 3
- 239000003153 chemical reaction reagent Substances 0.000 abstract description 2
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 239000002932 luster Substances 0.000 abstract description 2
- 210000002268 wool Anatomy 0.000 description 18
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 6
- 239000000835 fiber Substances 0.000 description 6
- 239000012535 impurity Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000013527 degreasing agent Substances 0.000 description 5
- 238000005237 degreasing agent Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000004043 dyeing Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000001814 pectin Substances 0.000 description 3
- 235000010987 pectin Nutrition 0.000 description 3
- 229920001277 pectin Polymers 0.000 description 3
- 235000011121 sodium hydroxide Nutrition 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000010924 continuous production Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 229940057950 sodium laureth sulfate Drugs 0.000 description 2
- SXHLENDCVBIJFO-UHFFFAOYSA-M sodium;2-[2-(2-dodecoxyethoxy)ethoxy]ethyl sulfate Chemical compound [Na+].CCCCCCCCCCCCOCCOCCOCCOS([O-])(=O)=O SXHLENDCVBIJFO-UHFFFAOYSA-M 0.000 description 2
- 239000001993 wax Substances 0.000 description 2
- 239000004382 Amylase Substances 0.000 description 1
- 102000013142 Amylases Human genes 0.000 description 1
- 108010065511 Amylases Proteins 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- 108091005804 Peptidases Proteins 0.000 description 1
- 239000004365 Protease Substances 0.000 description 1
- 102100037486 Reverse transcriptase/ribonuclease H Human genes 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 235000019418 amylase Nutrition 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 206010061592 cardiac fibrillation Diseases 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 230000002600 fibrillogenic effect Effects 0.000 description 1
- 208000020442 loss of weight Diseases 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
- D06L4/40—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using enzymes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B3/00—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating
- D06B3/10—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L1/00—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods
- D06L1/12—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods using aqueous solvents
- D06L1/16—Multi-step processes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
- D06L4/10—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen
- D06L4/13—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen using inorganic agents
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
- D06L4/10—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen
- D06L4/15—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen using organic agents
Abstract
The invention belongs to the technical field of knitted fabric pretreatment. The invention provides an open width pretreatment method of knitted fabric, which comprises the steps of steaming knitted fabric in steaming liquid after steaming treatment in the steaming liquid to obtain open width pretreated knitted fabric; the cooking liquor comprises refining enzyme, hydrogen peroxide, a bleaching aid and a surfactant; the steaming liquid comprises an alkaline agent, a penetrating agent, tea saponin, hydrogen peroxide and an oil removing agent. The open width pretreatment method of the invention obviously improves the capillary effect, whiteness and luster of the knitted fabric by reasonably selecting the components of the cooking liquor and the steaming liquor and controlling the concentration of each component and specific technological parameters, has small bursting strength loss, good pH value of the fabric surface and fluffy and soft hand feeling. The open width pretreatment method has the advantages of small loss, reduced water consumption, electricity consumption and steam consumption of ton cloth, reduced cost, less reagent consumption in steaming treatment and steaming treatment, energy conservation and low cost; the open width pretreatment time is obviously shortened, and the production efficiency is improved.
Description
Technical Field
The invention relates to the technical field of knitted fabric pretreatment, in particular to an open width pretreatment method of knitted fabric.
Background
The cotton knitted fabric adopts a high Wen Shengzhuang intermittent processing mode for a long time, and the technology and equipment of the mode are mature, but the technology and equipment have the defects of high energy consumption, high water consumption, low efficiency, large pollutant discharge amount and the like. Most of pretreatment processes adopt caustic soda to remove impurities, and the large-scale use of caustic soda causes high energy consumption, high water consumption and high COD value of waste water. Open width continuous production processes are receiving increasing attention based on the current situation of the printing and dyeing industry and the requirements of transformation and upgrading. The open width continuous production process has the characteristics of low energy consumption, low water consumption, less auxiliary agent consumption and the like; the production efficiency is obviously improved, the energy (water, electricity and steam) is greatly saved, and the sewage discharge amount is reduced.
The pretreatment of cotton fiber mainly removes pectin, nitrogenous substances, pigment, cotton seed hulls and other natural impurities in the cotton fiber. The dyeing technology of wool-cotton blended fabric mainly aims at controlling the pretreatment process, and the existing treatment method is easy to cause the loss of wool fibers, has unstable effect, poor wool effect and whiteness and low strength.
Therefore, the open width pretreatment method of the wool-cotton blended knitted fabric, which improves the production efficiency, saves energy, protects the environment, reduces the wool fiber loss and improves the wool effect, the strength, the whiteness and the stability, has important value and significance.
Disclosure of Invention
The invention aims to provide an open width pretreatment method of knitted fabric, aiming at the defects of the prior art.
In order to achieve the above object, the present invention provides the following technical solutions:
The invention provides an open width pretreatment method of knitted fabric, which comprises the following steps:
Steaming the knitted fabric in steaming liquid to obtain open-width pretreated knitted fabric;
The cooking liquor comprises refining enzyme, hydrogen peroxide, a bleaching aid and a surfactant;
the steaming liquid comprises an alkaline agent, a penetrating agent, tea saponin, hydrogen peroxide and an oil removing agent.
Preferably, in the cooking liquid, the concentration of the refining enzyme is 5-10 g/L, the concentration of the hydrogen peroxide is 18-22 g/L, the concentration of the bleaching aid is 1-3 g/L, and the concentration of the surfactant is 5-10 g/L; in the steaming liquid, the concentration of the alkaline agent is 3-6 g/L, the concentration of the penetrating agent is 1-3 g/L, the concentration of the tea saponin is 3-7 g/L, the concentration of the hydrogen peroxide is 10-15 g/L, and the concentration of the deoiling agent is 1-3 g/L.
Preferably, the refining enzyme comprises a cellulase and a galacturonase; the mass ratio of the cellulase to the galacturonase is 2-4:1.
Preferably, the surfactant comprises peregal 0 and/or polyoxyethylene lauryl ether sulfate.
Preferably, the alkaline agent comprises sodium carbonate and sodium silicate; the mass ratio of the sodium carbonate to the sodium silicate is 1:1-3.
Preferably, the knitted fabric is wool-cotton blended knitted fabric.
Preferably, the penetrant comprises penetrant JFC and/or penetrant OEP.
Preferably, the temperature of the cooking treatment is 55-65 ℃ and the time is 20-30 min; the steaming treatment is carried out at the temperature of 75-85 ℃ for 15-25 min.
Preferably, the knitted fabric is washed with water after the steaming treatment is finished, the washing temperature is 50-60 ℃, and the washing times are 2-4.
The beneficial effects of the invention include the following points:
1) The open width pretreatment method of the invention obviously improves the capillary effect, whiteness and luster of the knitted fabric by reasonably selecting the components of the cooking liquor and the steaming liquor and controlling the concentration of each component and specific technological parameters, has small bursting strength loss, good pH value of the fabric surface and fluffy and soft hand feeling.
2) The open width pretreatment method has the advantages of small loss, reduced water consumption, electricity consumption and steam consumption of ton cloth, reduced cost, less reagent consumption in steaming treatment and steaming treatment, energy conservation and low cost.
3) The open width pretreatment time of the invention is obviously shortened, the production efficiency is improved, the damage to wool and cotton fibers is reduced to the greatest extent, and the requirement of dyeing on pretreatment can be met.
Detailed Description
The invention provides an open width pretreatment method of knitted fabric, which comprises the following steps:
Steaming the knitted fabric in steaming liquid to obtain open-width pretreated knitted fabric;
The cooking liquor comprises refining enzyme, hydrogen peroxide, a bleaching aid and a surfactant;
the steaming liquid comprises an alkaline agent, a penetrating agent, tea saponin, hydrogen peroxide and an oil removing agent.
In the cooking liquid of the present invention, the concentration of the refining enzyme is preferably 5 to 10g/L, more preferably 6 to 9g/L, and even more preferably 7 to 8g/L.
The refining enzyme of the invention preferably comprises a cellulase and a galacturonase; the mass ratio of the cellulase to the galacturonase is preferably 2-4:1, and more preferably 3:1.
The refining enzyme disclosed by the invention can be used for effectively removing residual slurry on the surface of the knitted fabric, removing impurities such as ash, wax, pectin, oxygen-containing substances and the like in the fabric, enabling molecules in the fiber to be orderly arranged, and improving the bulking degree, the water absorption and the tensile strength of the knitted fabric. The refining enzyme is used for the open width pretreatment of knitted fabric, so that the loss of weight and strength of the fiber is small, the knitted fabric is not damaged, the cotton fibrillation of the knitted fabric is prevented, and the energy is saved and the environment is protected.
In the cooking liquid of the present invention, the concentration of hydrogen peroxide is preferably 18 to 22g/L, more preferably 19 to 21g/L, and even more preferably 20g/L.
In the cooking liquor of the present invention, the concentration of the bleaching aid is preferably 1 to 3g/L, more preferably 1.5 to 2.5g/L, and even more preferably 2g/L.
The bleach-aid agent is preferably a bleach-aid Eurolan HD-TC or a bleach-aid ARGAPREP HD-LTP; the bleaching agent has good chelating and dispersing effects on calcium and magnesium ions in water, and effectively reduces the influence of water quality change in the bleaching liquid on pretreatment; has excellent emulsifying, suspending and dispersing effects, and is helpful for removing impurities such as wax on wool and cotton fibers.
In the cooking liquid of the present invention, the concentration of the surfactant is preferably 5 to 10g/L, more preferably 6 to 9g/L, and even more preferably 7 to 8g/L.
The surfactant of the present invention preferably comprises peregal 0 and/or polyoxyethylene lauryl ether sulfate.
In the steaming liquid of the present invention, the concentration of the alkaline agent is preferably 3 to 6g/L, more preferably 4 to 5g/L.
The alkaline agent of the present invention preferably comprises sodium carbonate and sodium silicate; the mass ratio of the sodium carbonate to the sodium silicate is preferably 1:1 to 3, and more preferably 1:2.
The sodium carbonate or sodium silicate has strong alkalinity, has strong buffering effect and impurity adsorption effect, and the sodium silicate can improve the stability of cooking liquor under the condition of not damaging the fixation rate, and prevents the influence of CO 2 in the air on dyed cloth and the defects such as chromatic aberration, shallow edges and the like caused by the influence; however, the usage amount is large, so that the knitted fabric has harder hand feeling and is not easy to wash, the viscosity of the dye liquor is obviously increased, the permeability of the dye to the fabric is reduced, and the color fastness is reduced. The alkali agent content of the invention can effectively adsorb impurities, and can not influence the hand feeling, permeability and color fastness of the knitted fabric.
In the steaming liquid of the present invention, the concentration of the penetrating agent is preferably 1 to 3g/L, more preferably 1.5 to 2.5g/L, and still more preferably 2g/L.
The penetrant according to the invention preferably comprises the penetrant JFC and/or the penetrant OEP.
In the invention, the whiteness of the knitted fabric is increased along with the increase of the dosage of the penetrating agent; however, when the amount of the penetrating agent is too large, the bursting strength of the knitted fabric starts to decrease, and the hydrogen peroxide is promoted to be severely decomposed, so that a substance which damages fibers is generated.
In the steaming liquid of the present invention, the concentration of tea saponin is preferably 3 to 7g/L, more preferably 4 to 6g/L, and even more preferably 5g/L.
In the steaming liquid of the present invention, the concentration of hydrogen peroxide is preferably 10 to 15g/L, more preferably 11 to 14g/L, and even more preferably 12 to 13g/L.
The mass concentration of hydrogen peroxide in the hydrogen peroxide is preferably 26-33%, more preferably 27-31%, and even more preferably 28-30%;
When the consumption of hydrogen peroxide is lower than 15g/L, the whiteness of the knitted fabric is increased along with the increase of the consumption of hydrogen peroxide, and the bursting strength is increased; when the dosage of the hydrogen peroxide exceeds 17g/L, the whiteness continues to increase along with the increase of the dosage of the hydrogen peroxide, but the bursting strength is kept at a lower level, the fabric feel is hard, and the fiber damage is serious. The concentration of the hydrogen peroxide and the mass fraction of the hydrogen peroxide can improve the whiteness and bursting strength of the knitted fabric, so that the knitted fabric has good hand feeling.
In the steaming liquid of the present invention, the concentration of the degreasing agent is preferably 1 to 3g/L, more preferably 1.5 to 2.5g/L, and still more preferably 2g/L.
The degreasing agent of the present invention preferably comprises one or more of degreasing agent JL-91, degreasing agent JL-92 and degreasing agent TF-129D.
The knitted fabric is preferably wool-cotton blended knitted fabric.
The temperature of the steaming treatment in the present invention is preferably 55 to 65 ℃, more preferably 57 to 63 ℃, and even more preferably 59 to 61 ℃; the time of the steaming treatment is preferably 20 to 30 minutes, more preferably 22 to 28 minutes, and still more preferably 24 to 26 minutes; the steaming treatment temperature is preferably 75 to 85 ℃, more preferably 77 to 82 ℃, and even more preferably 79 to 80 ℃; the steaming time is preferably 15 to 25 minutes, more preferably 17 to 22 minutes, and still more preferably 18 to 20 minutes.
The pH value of the cloth surface of the knitted fabric after the steaming treatment according to the present invention is preferably 8.8 to 9.3, more preferably 8.9 to 9.2, and even more preferably 9 to 9.1.
The steaming treatment of the invention promotes the decomposition of hydrogen peroxide, so that pigments, pectin, wax and the like on the fabric are emulsified under the action of alkaline agent and suspended on the surface of the fabric.
After the steaming treatment is finished, the knitted fabric is preferably washed with water, wherein the washing temperature is preferably 50-60 ℃, more preferably 52-58 ℃, and even more preferably 54-56 ℃; the number of times of washing with water is preferably 2 to 4 times, more preferably 3 times.
In the method, the whiteness of the fabric is improved along with the increase of the steaming treatment and steaming treatment temperature, but the whiteness of the fabric is not obviously improved and the damage of the fabric is large due to the overhigh temperature, so that the strength is reduced; the whiteness and bursting strength of the fabric cannot reach the expected effect when the temperature is too low.
The technical solutions provided by the present invention are described in detail below with reference to examples, but they should not be construed as limiting the scope of the present invention.
Example 1
Preparing 1000L of cooking liquid: in the cooking liquid, the concentration of the refining enzyme is 7g/L (the refining enzyme comprises cellulase and galacturonase with the mass ratio of 2:1), the concentration of hydrogen peroxide (with the mass fraction of 27%) is 18g/L, the concentration of the bleaching aid Eurolan HD-TC is 1.5g/L, and the concentration of peregal 0 is 5g/L.
1000L of steaming liquid is prepared: in the steaming liquid, the concentration of the alkaline agent is 3g/L (the alkaline agent comprises sodium carbonate and sodium silicate in a mass ratio of 1:1), the concentration of the penetrating agent JFC is 1g/L, the concentration of the tea saponin is 4g/L, the concentration of the hydrogen peroxide (27% in mass fraction) is 10g/L, and the concentration of the deoiling agent JFC-91 is 1g/L.
Steaming wool-cotton blended knitted fabric in a steaming box filled with the steaming liquid at 57 ℃ for 28min under 2.5MPa, wherein the steaming box has a machine speed of 55m/min. Steaming the knitted fabric in an impregnating tank filled with the steaming liquid after steaming, wherein the steaming temperature is 77 ℃, the steaming time is 23min, the pressure is 1.5MPa, the machine speed of the impregnating tank is 55m/min, and the pH value of the cloth cover of the knitted fabric after steaming is finished is 8.9. And finally, washing the knitted fabric for 2 times at 60 ℃ to obtain the open-width pretreated wool-cotton blended knitted fabric.
The wool-cotton blended knitted fabric subjected to open width pretreatment in example 1 has good wool effect, whiteness and cloth cover pH value, small bursting strength loss, fluffy and soft hand feel, the wool effect of 30min is 155mm, the whiteness is 86.5%, and the bursting strength loss is 7.2%.
Example 2
Preparing 1000L of cooking liquid: in the cooking liquid, the concentration of the refining enzyme is 10g/L (the refining enzyme comprises cellulase and galacturonase with the mass ratio of 4:1), the concentration of hydrogen peroxide (with the mass fraction of 31%) is 22g/L, the concentration of the bleaching aid ARGAPREP HD-LTP is 2.5g/L, and the concentration of sodium laureth sulfate is 9g/L.
1000L of steaming liquid is prepared: in the steaming liquid, the concentration of the alkaline agent is 6g/L (the alkaline agent comprises sodium carbonate and sodium silicate in a mass ratio of 1:3), the concentration of the penetrating agent OEP is 3g/L, the concentration of the tea saponin is 7g/L, the concentration of the hydrogen peroxide (mass fraction is 30%) is 15g/L, and the concentration of the deoiling agent JL-92 is 3g/L.
Steaming wool-cotton blended knitted fabric in a steaming box filled with the steaming liquid at 63 ℃ for 22min under the pressure of 2.3MPa, wherein the machine speed of the steaming box is 60m/min. Steaming the knitted fabric in an impregnating tank filled with the steaming liquid after steaming, wherein the steaming temperature is 82 ℃, the steaming time is 17min, the pressure is 1.8MPa, the machine speed of the impregnating tank is 58m/min, and the pH value of the cloth cover of the knitted fabric after steaming is finished is 9.2. Finally, the knitted fabric is washed for 4 times at 52 ℃ to obtain the open-width pretreated wool-cotton blended knitted fabric.
The wool-cotton blended knitted fabric subjected to open width pretreatment in example 2 has good wool effect, whiteness and cloth cover pH value, small bursting strength loss, fluffy and soft hand feel, the wool effect of 30min is 158mm, the whiteness is 85.8%, and the bursting strength loss is 6.8%.
Example 3
Preparing 1000L of cooking liquid: in the cooking liquid, the concentration of the refining enzyme is 8g/L (the refining enzyme comprises cellulase and galacturonase with the mass ratio of 3:1), the concentration of hydrogen peroxide (the mass fraction is 28%) is 20g/L, the concentration of the bleaching aid Eurolan HD-TC is 2g/L, the concentration of sodium laureth sulfate is 4g/L, and the concentration of peregal 0 is 4g/L.
1000L of steaming liquid is prepared: in the steaming liquid, the concentration of the alkaline agent is 4g/L (the alkaline agent comprises sodium carbonate and sodium silicate in a mass ratio of 1:2), the concentration of the penetrating agent JFC is 2g/L, the concentration of the tea saponin is 5g/L, the concentration of the hydrogen peroxide (29% by mass) is 13g/L, and the concentration of the deoiling agent TF-129D is 2g/L.
Steaming wool-cotton blended knitted fabric in a steaming box filled with the steaming liquid at the temperature of 60 ℃ for 23min under the pressure of 2.5MPa, wherein the machine speed of the steaming box is 58m/min. Steaming the knitted fabric in an impregnating tank filled with the steaming liquid after steaming, wherein the steaming temperature is 80 ℃, the steaming time is 20min, the pressure is 1.6MPa, the machine speed of the impregnating tank is 58m/min, and the pH value of the cloth cover of the knitted fabric after steaming is finished is 9.1. And finally, washing the knitted fabric for 3 times at 55 ℃ to obtain the open-width pretreated wool-cotton blended knitted fabric.
The wool-cotton blended knitted fabric subjected to open width pretreatment in example 3 has good wool effect, whiteness and cloth cover pH value, small bursting strength loss, fluffy and soft hand feel, the wool effect of 30min is 165mm, the whiteness is 86.8%, and the bursting strength loss is 6.2%.
Comparative example 1
The cellulase and galacturonase of example 3 were changed to amylase and protease at the same concentration, the alkaline agent was changed to sodium hydroxide, the cooking temperature was changed to 75℃and the other conditions were the same as in example 3.
The wool-cotton blended knitted fabric subjected to open width pretreatment in comparative example 1 has poor wool effect and whiteness, hard hand feeling, large bursting strength loss, 140mm in wool effect after 30min, 80% whiteness and 12.5% bursting strength loss.
Comparative example 2
The concentration of the refining enzyme in example 3 was changed to 15g/L, the surfactant was omitted, the concentration of the alkaline agent was changed to 10g/L, the steaming time was changed to 40min, and the other conditions were the same as in example 3.
The wool-cotton blended knitted fabric subjected to open width pretreatment in comparative example 2 has poor wool effect and whiteness, hard hand feeling, large bursting strength loss, 142mm in wool effect after 30min, 77.2% whiteness and 11.8% bursting strength loss.
Comparative example 3
The concentration of the penetrating agent in the embodiment 3 is changed to 5g/L, the bleaching aid is omitted, the concentration of hydrogen peroxide in the cooking liquid is changed to 15g/L, the steaming temperature is changed to 90 ℃, and other conditions are the same as the embodiment 3.
The wool-cotton blended knitted fabric subjected to open width pretreatment in comparative example 3 has poor wool effect and whiteness, hard hand feeling, large bursting strength loss, 147mm wool effect after 30min, 82% whiteness and 12.1% bursting strength loss.
The pretreatment method of the invention obviously improves the capillary effect and whiteness of the wool-cotton blended knitted fabric by reasonably selecting the components of the cooking liquid and the steaming liquid and controlling the concentration of each component and specific technological parameters, has small bursting strength loss and good hand feeling, and can lead to the decrease of the capillary effect, whiteness and bursting strength of the knitted fabric by changing the types of the components, the concentration, the temperature, the time and other technological parameters in the pretreatment method of the invention.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (3)
1. An open width pretreatment method of knitted fabric is characterized by comprising the following steps:
Steaming the knitted fabric in steaming liquid to obtain open-width pretreated knitted fabric;
the cooking liquor consists of refining enzyme, hydrogen peroxide, a bleaching aid and a surfactant;
The steaming liquid consists of an alkaline agent, a penetrating agent, tea saponin, hydrogen peroxide and an oil removing agent;
In the cooking liquid, the concentration of the refining enzyme is 5-10 g/L, the concentration of the hydrogen peroxide is 18-22 g/L, the concentration of the bleaching aid is 1-3 g/L, and the concentration of the surfactant is 5-10 g/L; in the steaming liquid, the concentration of the alkaline agent is 3-6 g/L, the concentration of the penetrating agent is 1-3 g/L, the concentration of the tea saponin is 3-7 g/L, the concentration of the hydrogen peroxide is 10-15 g/L, and the concentration of the deoiling agent is 1-3 g/L;
the refining enzyme comprises cellulase and galacturonase; the mass ratio of the cellulase to the galacturonase is 2-4:1;
the knitted fabric is wool-cotton blended knitted fabric;
The temperature of the cooking treatment is 55-65 ℃ and the time is 20-30 min; the steaming treatment is carried out at the temperature of 75-85 ℃ for 15-25 min;
The bleaching agent is bleaching agent Eurolan HD-TC or bleaching agent ARGAPREP HD-LTP;
washing the knitted fabric after the steaming treatment is finished, wherein the washing temperature is 50-60 ℃, and the washing times are 2-4 times;
The alkaline agent comprises sodium carbonate and sodium silicate; the mass ratio of the sodium carbonate to the sodium silicate is 1:1-3.
2. The open width pretreatment method according to claim 1, wherein the surfactant comprises peregal 0 and/or polyoxyethylene lauryl ether sulfate.
3. The open width pretreatment method according to claim 1, characterized in that the penetrant comprises penetrant JFC and/or penetrant OEP.
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| CN113389042A (en) * | 2021-07-05 | 2021-09-14 | 汕头市鼎泰丰实业有限公司 | Open-width pretreatment method for knitted fabric |
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| CN1417403A (en) * | 2002-12-10 | 2003-05-14 | 江南大学 | Pre-treatment process of cotton or cotton/polyester fabric before continuous dipping of bioenzyme and steaming |
| CN1417402A (en) * | 2002-12-10 | 2003-05-14 | 江南大学 | Pre-treatment process of cotton or cotton/polyester fabric before intermittent dipping of bioenzyme |
| CN104264491A (en) * | 2014-09-15 | 2015-01-07 | 河南工程学院 | Method for low-temperature refining, bleaching and surface cleaning treatment of cotton knitted fabric by virtue of one-bath process |
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