Dyeing and finishing process for anti-sticking wool textile

Abstract

The invention discloses an anti-sticking wool textile dyeing and finishing process which comprises the steps of S1 pretreatment, S2 in-bath dyeing and S3 aftertreatment which are performed in sequence, specifically, the step S1 comprises the steps of S11 singeing, S12 alkali shrinkage, S13 scouring and bleaching and S14 mercerizing which are performed in sequence, and the step S3 comprises the steps of S31 calendaring and S32 preshrinking which are performed in sequence. The continuous scouring and bleaching process, the alkali shrinkage and mercerizing combined process, the rubber blanket calendaring and preshrinking combined process and the like are adopted, the problem that an existing wool-sticking-preventing garment is poor in comfort level is solved, and the moisture absorption and breathability of the garment are improved on the premise that the electrostatic adsorption effect of the garment is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of textile processing, and in particular relates to a dyeing and finishing process for anti-staining wool textiles. Background Art

[0002] The essential reason for hair to stick to clothing is electrostatic adsorption, that is, when tiny hair without static electricity is close to clothing with static electricity, due to the electrostatic induction phenomenon, the end close to the clothing with static electricity senses the opposite electrical property of the clothing with static electricity, and is attracted and attached to the charged clothing. At present, the anti-hair finishing process for clothing mostly uses ionic surfactants, which produce an antistatic film through chemical reaction with the fiber surface, thereby reducing the friction coefficient between fibers. However, this finishing process has certain antistatic properties, but with the generation of structural film, the hygroscopicity and breathability of the clothing are significantly reduced, and the wearing comfort is greatly reduced. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a dyeing and finishing process for anti-wool textiles, solve the problem of poor comfort of existing anti-wool clothing, and increase the moisture absorption and air permeability of clothing while ensuring the reduction of electrostatic adsorption of clothing, thereby ultimately improving the shopping experience and usage experience of clothing buyers.

[0004] According to the technical scheme of the present invention, the present invention provides a dyeing and finishing process for anti-staining wool textiles, comprising step S1 pre-treatment, step S2 bath dyeing, and step S3 post-treatment performed in sequence, wherein step S1 comprises step S11 singeing, step S12 alkali shrinkage, step S13 boiling and bleaching, and step S14 mercerizing performed in sequence, and step S3 comprises step S31 calendering and step S32 pre-shrinking performed in sequence.

[0005] Preferably, in step S13, an open-width continuous scouring and bleaching machine is used to continuously complete scouring, bleaching and washing; and / or, in step S3, a rubber blanket calendering and pre-shrinking multifunctional machine is used to continuously complete calendering and pre-shrinking.

[0006] Preferably, in step S11, the processed fabric is a knitted fabric, which is made by interweaving 50wt% cotton fiber, 50wt% regenerated cellulose fiber blended yarn and 30D spandex, and has a knitted weft plain needle structure; And / or, in step S11, a knitting singeing machine is used, the process speed is 40 m / min, the front and back sides are singed, and a cold water roller is used for cooling.

[0007] Preferably, in step S12, a knitted fabric open-width alkali shrinking machine is used, the caustic soda concentration is 120 g / L-140 g / L, the temperature is 75° C., and the time is 20 min.

[0008] Preferably, in step S13, an open-width continuous scouring and bleaching machine is used, the process speed is 100 m / min, the steam supply pressure is 0.3 MPa, the compressed air is 0.5 MPa, and the water supply pressure is 0.3 MPa.

[0009] Preferably, in step S14, a cotton tubular knitted cloth mercerizing machine is used, the caustic soda concentration is 270g / L-280g / L, the temperature is 15°C, the process speed is 25m / min, the alkali action time is 50s, and the tension of the cloth stretching roller is 0.25MPa.

[0010] According to some embodiments, in step S2, a dyeing machine is used, and reactive dyes, sodium sulfate, soda ash and auxiliary agents are put into a dyeing machine tank; wherein the auxiliary agents at least include a hydrophilic anti-staining finishing agent; The preparation process of the hydrophilic anti-hair-staining finishing agent is as follows: Step A, add 99% pure ethanol and methane monooxygenase into a flask, add nitrogen into the flask until it is full, heat to 220°C-260°C under normal pressure, react fully, exhaust the gas and cool to room temperature; Step B, placing the product of step A into a high-pressure reactor, filling the high-pressure reactor with ammonia, and adding molybdenum trioxide, the reaction temperature is 220°C-260°C, the reaction pressure is 0.5MPa, after the reaction is completed, exhaust the gas and cool to room temperature; Step C, placing the product of step B into a flask, adding sufficient water, adding octadecanoic acid, and adding nitrogen to the flask until it is full, and controlling the reaction temperature between 120°C and 140°C under normal pressure. After the reaction is completed, exhaust the gas and cool to room temperature; Step D, placing the product of step C into a high-pressure reactor, adding a sufficient amount of tetrahydrofuran, vacuum dehydration in the high-pressure reactor, controlling the vacuum degree to be less than 0.1 Pa, the reaction temperature to be 110° C.-120° C., the average relative molecular mass of the product to be 2300-3600, after the reaction is completed, exhausting the gas and cooling to room temperature; Step E, placing the product of step D into a high-pressure reactor, adding sufficient methyl bromide and sufficient caustic soda, controlling the reaction temperature to 80° C., and the pressure in the high-pressure reactor to 0.6 MPa. After the reaction is completed, exhaust the gas, and dissolve the final product in propylene glycol for storage.

[0011] According to some embodiments, in step S2, active dyes, 15g / L-20g / L of sodium sulfate, 10g / L-15g / L of soda ash, 80g / L-120g / L of hydrophilic anti-staining finishing agent, bath ratio 1:40, dyeing temperature 60°C-70°C, dyeing time 40min-60min are used for co-bath dyeing.

[0012] Preferably, in step S31, a three-roller vertical single-nip calender is used, with a process speed of 30 m / min, a nominal pressure of 80T, and a working temperature of ≤240°C; And / or, in step S32, a rubber blanket pre-shrinking machine is used, the rubber blanket thickness is 60 cm, the line extrusion force is 650 N / cm, the process speed is 6 m / min, and the overfeed rate is 10%.

[0013] Preferably, in step S3, step S31 and step S32 are continuously performed in a rubber blanket calendering and pre-shrinking multifunctional machine, the rubber blanket thickness is 60 cm, the line extrusion force is 650 N / cm-700 N / cm, the nominal pressure is 80T-90T, the working temperature is ≤240°C, the process speed is 5 m / min, and the overfeed rate is 10%.

[0014] Compared with the prior art, the beneficial technical effects of the present invention are as follows: 1. The dyeing and finishing process of the present invention adopts a continuous scouring and bleaching process, an alkali shrinkage and mercerizing combined process, a calendering and pre-shrinkage combined process, etc., so that the textiles have better anti-static hair-staining effect and wearing comfort effects such as softness, moisture absorption and air permeability; the present invention adopts a combination of alkali shrinkage and mercerizing process in the pre-treatment process, which can further improve the performance of the fabric compared with the ordinary alkali shrinkage or mercerizing process used alone; the mechanical properties of the fabric are improved in the alkali shrinkage process, and the gloss and orientation of the fabric are improved again in the subsequent mercerizing process, and the two concentrated alkali treatments will increase the smoothness of the cloth surface, which has a multiplier effect on reducing fabric friction and reducing electrostatic adsorption.

[0015] 2. The present invention preferably adopts open-width continuous scouring and bleaching equipment, which has the following advantages compared with ordinary scouring, bleaching and separation equipment: first, the continuous scouring and bleaching equipment eliminates the problems of uneven components and uneven fabric surface caused by fabric adhesion and fabric abrasion during the logistics and transportation process of ordinary scouring and separation equipment, thereby further reducing the possibility of electrostatic adhesion; second, the brush filter, spray water washing and rotor vibration water washing of the open-width continuous scouring and bleaching equipment can better remove fabric impurities, and at the same time reduce fabric abrasion and reduce the occurrence of static electricity.

[0016] 3. The hydrophilic anti-hair staining finishing agent preferably used in the present invention is a hydrophilic and oil-repellent quaternary ammonium salt type anti-hair staining finishing agent generated by a series of elimination reactions, amination reactions, amidation reactions, amine-ether reactions and halogenation reactions using high-purity ethanol. The hydrophilicity of the fiber surface is increased by chemical methods, and the separation of water to the fiber interior and the hair interface is promoted, thereby improving the fabric's anti-hair staining properties. At the same time, it also reduces electrostatic adsorption and gives the fabric a soft feel, which has a multiplier effect on the anti-staining effect of pet hair and other hair.

[0017] 4. The present invention preferably adopts a rubber blanket calendering and pre-shrinking multifunctional machine. Compared with the traditional rubber blanket and calendering separation equipment, the advantage is that the external conditions of the fabric are basically the same during the continuous calendering and rubber blanket pre-shrinking process, the quality is highly uniform, and the flatness and glossiness of the fabric surface are higher than those of the traditional separation equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The present invention provides a process flow chart. DETAILED DESCRIPTION

[0019] The present invention provides a dyeing and finishing process for anti-wool-staining textiles, which solves the problem of poor comfort of existing anti-wool-staining clothing, and increases the moisture absorption and air permeability of clothing while ensuring that the electrostatic adsorption effect of clothing is reduced, thereby ultimately improving the shopping experience and use experience of clothing buyers.

[0020] See also Figure 1 The dyeing and finishing process of anti-staining wool textile provided by the present invention comprises step S1 pre-treatment, step S2 dyeing in bath, and step S3 post-treatment performed in sequence. Step S1 further comprises step S11 singeing, step S12 alkali shrinking, step S13 scalding and bleaching, and step S14 mercerizing performed in sequence. Step S3 further comprises step S31 calendering and step S32 pre-shrinking performed in sequence.

[0021] In the pre-treatment process of the present invention, singeing pretreatment is firstly performed to remove the fluff and cotton knots on the surface of the grey cloth, reduce the static friction and sliding friction coefficient of the grey cloth, and thus reduce the occurrence of hair staining of the finished clothing fabric; then alkali shrinkage is performed to swell the inside of the fiber by caustic soda to reduce the hairiness on the surface of the fabric, thereby reducing the static friction and sliding friction coefficient; then scouring and bleaching are performed, during which scouring and bleaching are performed continuously, which can avoid the problems of impurities adhering to the fabric and scratches caused by intermediate transportation, and is helpful to improve the purity of the finished fabric component and the flatness of the fabric; finally, mercerizing is performed, and the tension of the roller is increased to maintain the tension state, so that the dimensional stability is guaranteed in the whole concentrated alkali finishing process, and the fabric surface is further smoothed, thereby reducing the hair staining of the finished clothing fabric.

[0022] The bath dyeing process of the present invention is, for example, to put the pre-treated fabric into a dyeing machine, put reactive dyes, sodium sulfate, soda ash and multifunctional auxiliaries into the vat in one bath, and after dyeing is completed, fix the color, wash with water, and wash with soap out of the vat; wherein the preferred selection scheme of raw materials such as dyes, auxiliaries (such as hydrophilic anti-staining finishing agents) can further reduce the electrostatic adsorption effect during the dyeing stage, and improve the softness and comfort of the fabric. In other embodiments, other dyeing methods can also be selected.

[0023] In the post-processing process of the present invention, the dyed fabric is firstly calendered to flatten the fabric hairiness generated by friction in the dyeing machine cylinder, thereby reducing the possibility of adsorption and hairiness caused by friction while ensuring the style of the fabric; and the calendered fabric is pre-shrunk. After being processed by the pre-shrunk machine, the fiber bonding between the fabrics is weakened, thereby reducing the electrostatic adsorption caused by the friction inside the fabric.

[0024] Preferably, some steps are combined to be completed continuously in the same device, so that the external conditions of the steps performed sequentially are basically the same, and the problem of impurities introduced during the process can be improved, thereby improving the quality uniformity and the flatness of the fabric surface. For example, in step S13, an open-width continuous scouring and bleaching machine is used to continuously complete scouring, bleaching and washing; and / or, in step S3, a rubber blanket calendering and pre-shrinking multifunctional machine is used to continuously complete calendering and pre-shrinking.

[0025] More specifically, in the preferred embodiment, in step S11, the processed fabric is a knitted fabric; further, the knitted fabric is selected from 50wt% cotton fiber, 50wt% regenerated cellulose fiber blended yarn and 30D spandex interwoven, and the structure is a knitted weft knitted plain needle. In step S11, a knitting singeing machine is used, and the process speed is 40m / min, that is, the traveling speed of the fabric during the singeing treatment, that is, the processing speed is 40m / min, the front and back sides are singed, and a cold water roller is used for cooling. As a supplementary explanation, in this article, the process speed (or working speed) refers to the equipment speed used in the scheme of the present invention, and the mechanical speed refers to the equipment speed that the equipment recommends the highest possible.

[0026] In step S12, a knitted fabric open width alkali shrinking machine is used, the caustic soda concentration is 120g / L-140g / L, the temperature is 75°C, and the time is 20min. The knitted fabric open width alkali shrinking machine is used, without pre-tensioning, to swell the fiber inside by caustic soda, reduce the hairiness on the fabric surface, thereby reducing the static friction and sliding friction coefficients, thereby reducing the hairiness of the finished garment fabric.

[0027] In step S13, an open-width continuous scouring and bleaching machine is used, the mechanical speed is 110m / min, the process speed is 100m / min, the steam pressure (the pressure of steam acting on the fabric) is 0.3MPa, the compressed air (the pressure of compressed air in the air compressor) is 0.5MPa, and the water pressure (the pressure of water in the washing process) is 0.3MPa. The open-width continuous scouring and bleaching machine is used to shorten the scouring and bleaching process, reduce impurities on the fabric through spray washing and rotor vibration washing, increase fabric permeability and water absorption, and provide necessary conditions for the subsequent process to obtain the best effect on the basis of reducing the occurrence of electrostatic adsorption.

[0028] In step S14, a cotton tubular knitted fabric mercerizing machine is used, the caustic soda concentration is 270g / L-280g / L, the temperature is 15°C, the process speed is 25m / min, the alkali action time (the time the fabric is exposed to caustic soda) is 50s, and the tension of the cloth roller (the tension exerted on the fabric when it passes through caustic soda) is 0.25MPa.

[0029] In step S2, a dyeing machine is used, and active dyes, sodium sulfate, soda ash and auxiliary agents are put into the dyeing machine cylinder. Among them, the auxiliary agents at least include a hydrophilic anti-hair-staining finishing agent. The hydrophilic anti-hair-staining finishing agent is a finishing agent with hydrophilicity and anti-static effects, and an existing product can be used.

[0030] The hydrophilic anti-hair staining finishing agent preferably used in the present invention is a hydrophilic and oil-repellent quaternary ammonium salt type anti-hair staining finishing agent, and its preparation process is as follows.

[0031] Step A, add 99% pure ethanol to a flask, add methane monooxygenase through a separatory funnel, add nitrogen to the flask until it is full, heat to 220°C-260°C under normal pressure, react fully, exhaust the gas and cool to room temperature.

[0032] The main reaction formula in step A is as follows: .

[0033] Step B, placing the product of step A into a high-pressure reactor, filling the high-pressure reactor with ammonia, and adding molybdenum trioxide (for example, the mass ratio of molybdenum trioxide to the reactant is 1:100), the reaction temperature is 220°C-260°C, the reaction pressure is 0.5MPa, and after the reaction is completed, the gas is discharged and cooled to room temperature.

[0034] The main reaction formula in step B is as follows: .

[0035] Step C, put the product of step B into a flask, add sufficient water (such as tertiary water), add octadecanoic acid, and add nitrogen to the flask until it is full. Under normal pressure, control the reaction temperature between 120°C and 140°C. After the reaction is completed, exhaust the gas and cool to room temperature.

[0036] The main reaction formula in step C is as follows: .

[0037] Step D, placing the product of step C into a high-pressure reactor, and adding a sufficient amount of tetrahydrofuran, vacuum dehydration in the high-pressure reactor, controlling the vacuum degree to be less than 0.1 Pa, the reaction temperature to be 110°C-120°C, the average relative molecular mass of the product to be 2300-3600, after the reaction is completed, exhaust the gas and cool to room temperature.

[0038] The main reaction formula in step D is as follows: .

[0039] Step E, placing the product of step D into a high-pressure reactor, adding sufficient methyl bromide and sufficient caustic soda, controlling the reaction temperature to 80° C., and the pressure in the high-pressure reactor to 0.6 MPa. After the reaction is completed, exhaust the gas, and dissolve the final product in propylene glycol for storage.

[0040] The main reaction formula in step E is as follows: .

[0041] The final product is: .

[0042] In some preferred embodiments, in step S2, active dyes, 15g / L-20g / L of sodium sulfate, 10g / L-15g / L of soda ash, 80g / L-120g / L of hydrophilic anti-staining finishing agent, bath ratio 1:40, dyeing temperature 60°C-70°C, dyeing time 40min-60min are used for co-bath dyeing.

[0043] More specifically, for example, in step S2, Huntsman's Novacron reactive dyes are selected, for example, Novacron Red FN-R 1% owf, Novacron Yellow FN-2R 1% owf, and Novacron Blue FN-R 0.1% owf; or, Novacron Red FN-R 1% owf, Novacron Yellow FN-2R 0.1% owf, and Novacron Blue FN-R 1% owf; or, Novacron Red FN-R 0.1% owf, Novacron Yellow FN-2R 1% owf, and Novacron Blue FN-R 1% owf; or, Novacron Red FN-R 1% owf, Novacron Yellow FN-2R 0.1% owf, and Novacron Blue FN-R 0.1% owf. The total bath composition is 20g / L sodium sulfate, 10g / L soda ash, 80g / L hydrophilic anti-staining finishing agent, bath ratio 1:40, dyeing temperature 60℃, dyeing time: 40min, and the anti-staining effect is optimal.

[0044] In some preferred embodiments, in step S31, a calender is used, more preferably a three-roller vertical single-nip calender, with a process speed of 30 m / min, a nominal pressure of 80T, and a working temperature of ≤240° C. More specifically, for example, a CYG three-roller vertical single-nip calender of Changzhou First Textile Equipment Co., Ltd. is used.

[0045] In some preferred embodiments, in step S32, a rubber blanket pre-shrinking machine is used, the rubber blanket thickness is 60 cm, the line extrusion force is 600N / cm-650N / cm, the process speed is 6m / min, and the overfeed rate is 10%. More specifically, for example, the SL-1-240 rubber blanket pre-shrinking machine of Xinyuan Machinery Co., Ltd. is used.

[0046] In some other preferred embodiments, in step S3, step S31 and step S32 are continuously performed in a rubber blanket calendering and pre-shrinking multifunctional machine, the rubber blanket thickness is 60 cm, the linear extrusion force is 650 N / cm-700 N / cm, the nominal pressure is 80T-90T, the working temperature is ≤240°C, the process speed is 5 m / min, and the overfeed rate is 10%.

[0047] The present invention is further described in detail below with reference to specific embodiments.

[0048] Embodiment 1: In step S1, the knitted fabric is selected from 40s 50wt% cotton fiber 50wt% modal fiber blended yarn, and 30D spandex fiber is selected as the lining yarn to be interwoven with the 40s blended yarn, and the structure is knitted weft plain needle. In step S11, a HDZS-180~240 knitting singeing machine produced by Taizhou Hongda Printing and Dyeing Machinery Co., Ltd. is selected, the process speed is selected as 40 m / min, the front and back sides are double-sided singed, and two φ300 cold water rollers are used for cooling.

[0049] In step S12, a knitted fabric open-width alkali shrinking machine produced by Foshan Hongxin Machinery is used, the model is HSJS221, the caustic soda concentration is 120 g / L, the temperature is 75° C., and the time is 20 min.

[0050] In step S13, a continuous scouring and bleaching machine of Sanji Precision Technology is selected, model TB286A, mechanical speed: 110m / min, process speed: 100m / min, supply steam pressure: 0.3Mpa, compressed air: 0.5Mpa, supply water pressure: 0.3Mpa.

[0051] In step S14, a cotton tubular knitted fabric mercerizing machine of Shengdi Industrial Control Equipment Co., Ltd. is selected, model SD-SGJ-130, caustic soda concentration is 270g / L, temperature is 15°C (the condenser tube needs to dynamically control the temperature), process speed is 25m / min, alkali action time is 50s, and tension of the cloth stretching roller is 0.25Mpa.

[0052] In step S2, Huntsman's Novacron reactive dyes include Novacron Red FN-R 1% owf, Novacron Yellow FN-2R 1% owf, Novacron Blue FN-R 0.1% owf, 20 g / L sodium sulfate, 10 g / L soda ash, a hydrophilic anti-staining finishing agent, a bath ratio of 1:40, a dyeing temperature of 60°C, and a dyeing time of 40 min.

[0053] In steps S31 and S32, a rubber blanket calendering and pre-shrinking multifunctional machine of Tianyi (Jiangmen) Intelligent Equipment Co., Ltd., model A868RF, is selected, wherein the rubber blanket thickness is 60 cm, the line extrusion pressure is 650 N / cm, the nominal pressure is 80 T, the working temperature is ≤ 240 ° C, the process speed is 5 m / min, and the overfeed rate is 10%.

[0054] Comparative Example 1: As in the first embodiment, the knitted fabric blank is the same, but the difference is: ① Using ordinary scouring, bleaching and separation equipment and processes alone, without using open-width continuous scouring and bleaching equipment and processes; ② The alkali shrinkage process was used alone, and the alkali shrinkage and mercerizing combined process was not used; ③ Use cross-linked antistatic agents containing octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane, and do not use hydrophilic anti-hair finishing agents in the bath; ④ Separate rubber blanket pre-shrinking and calendering equipment and process, and no multifunctional rubber blanket calendering and pre-shrinking equipment and process.

[0055] Embodiment 2: In step S1, 50 100wt% modal fiber pure spun yarns are selected for knitted fabrics, and 30D spandex fiber is selected as the padding yarn to be interwoven with the 50 pure spun yarns in full stitch and full way, and the structure is knitted weft knitted 1+1 rib. In step S11, a HDZS-180~240 knitting singeing machine produced by Taizhou Hongda Printing and Dyeing Machinery Co., Ltd. is selected, the process speed is selected as 40 m / min, the front and back sides are double-sided singed, and two φ300 cold water rollers are used for cooling.

[0056] In step S12, a knitted fabric open-width alkali shrinking machine produced by Foshan Hongxin Machinery is used, the model is HSJS221, the caustic soda concentration is 130 g / L, the temperature is 75° C., and the time is 20 min.

[0057] In step S13, a continuous scouring and bleaching machine of Sanji Precision Technology is selected, model TB286A, mechanical speed: 110m / min, process speed: 100m / min, supply steam pressure: 0.3Mpa, compressed air: 0.5Mpa, supply water pressure: 0.3Mpa.

[0058] In step S14, a cotton tubular knitted fabric mercerizing machine of Shengdi Industrial Control Equipment Co., Ltd. is selected, model SD-SGJ-130, caustic soda concentration is 280g / L, temperature is 15°C (the condenser needs to dynamically control the temperature), process speed is 25m / min, alkali action time is 50s, and tension of the cloth stretching roller is 0.25Mpa.

[0059] In step S2, Huntsman's Novacron reactive dyes include Novacron Red FN-R 1% owf, Novacron Yellow FN-2R 0.1% owf, Novacron Blue FN-R 1% owf, 20 g / L sodium sulfate, 10 g / L soda ash, 80 g / L hydrophilic anti-staining finishing agent, bath ratio 1:40, dyeing temperature 60°C, and dyeing time: 40 min.

[0060] In steps S31 and S32, a rubber blanket calendering and pre-shrinking multifunctional machine of Tianyi (Jiangmen) Intelligent Equipment Co., Ltd., model A868RF, is selected, wherein the rubber blanket thickness is 60 cm, the line extrusion pressure is 700 N / cm, the nominal pressure is 85 T, the working temperature is ≤ 240 ° C, the process speed is 5 m / min, and the overfeed rate is 10%.

[0061] Comparative Example 2: As in the second embodiment, the knitted fabric blank is the same, but the difference is: ① Using ordinary scouring, bleaching and separation equipment and processes alone, without using open-width continuous scouring and bleaching equipment and processes; ② The alkali shrinkage process was used alone, and the alkali shrinkage and mercerizing combined process was not used; ③ Use cross-linked antistatic agents containing octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane, and do not use hydrophilic anti-hair finishing agents in the bath; ④ Separate rubber blanket pre-shrinking and calendering equipment and process, and no multifunctional rubber blanket calendering and pre-shrinking equipment and process.

[0062] Embodiment three: In step S1, the knitted fabric is selected from 100 70wt% lyocell fiber 30wt% cotton fiber blended yarn, and 20D spandex fiber is selected as the padding yarn to be interwoven with the 100 blended yarn in full needle and full way, and the structure is knitted weft knitted 1+1 double rib. In step S11, the model HDZS-180~240 knitting singeing machine produced by Taizhou Hongda Printing and Dyeing Machinery Co., Ltd. is selected, the process speed is selected as 40 meters / minute, the front and back sides are double-sided singed, and two φ300 cold water rollers are used for cooling.

[0063] In step S12, a knitted fabric open-width alkali shrinking machine produced by Foshan Hongxin Machinery is used, the model is HSJS221, the caustic soda concentration is 140 g / L, the temperature is 75° C., and the time is 20 min.

[0064] In step S13, a continuous scouring and bleaching machine of Sanji Precision Technology is selected, model TB286A, mechanical speed: 110m / min, process speed: 100m / min, supply steam pressure: 0.3Mpa, compressed air: 0.5Mpa, supply water pressure: 0.3Mpa.

[0065] In step S14, a cotton tubular knitted fabric mercerizing machine of Shengdi Industrial Control Equipment Co., Ltd. is selected, model SD-SGJ-130, caustic soda concentration is 280g / L, temperature is 15°C (the condenser needs to dynamically control the temperature), process speed is 25m / min, alkali action time is 50s, and tension of the cloth stretching roller is 0.25Mpa.

[0066] In step S2, Huntsman's Novacron reactive dyes include Novacron Red FN-R 0.1% owf, Novacron Yellow FN-2R 1% owf, Novacron Blue FN-R 1% owf, 20 g / L sodium sulfate, 10 g / L soda ash, 80 g / L hydrophilic anti-staining finishing agent, bath ratio 1:40, dyeing temperature 60°C, and dyeing time: 40 min.

[0067] In steps S31 and S32, a rubber blanket calendering and pre-shrinking multifunctional machine of Tianyi (Jiangmen) Intelligent Equipment Co., Ltd., model A868RF, is selected, wherein the rubber blanket thickness is 60 cm, the line extrusion pressure is 700 N / cm, the nominal pressure is 90 T, the working temperature is ≤ 240 ° C, the process speed is 5 m / min, and the overfeed rate is 10%.

[0068] Comparative Example 3: As in the third embodiment, under the condition that the knitted fabric blank is the same, the difference is that; ① Using ordinary scouring, bleaching and separation equipment and processes alone, without using open-width continuous scouring and bleaching equipment and processes; ② The alkali shrinkage process was used alone, and the alkali shrinkage and mercerizing combined process was not used; ③ Use cross-linked antistatic agents containing octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane, and do not use hydrophilic anti-hair finishing agents in the bath; ④ Separate rubber blanket pre-shrinking and calendering equipment and process, and no multifunctional rubber blanket calendering and pre-shrinking equipment and process.

[0069] Embodiment 4: In step S1, 21 100wt% cotton fiber pure spun yarns are selected for the knitted fabric, and 150D cuprammonium fiber is selected as the lining yarn to be interwoven with 32 pure spun yarns, and the structure is a knitted weft plain needle. In step S11, a HDZS-180~240 knitting singeing machine produced by Taizhou Hongda Printing and Dyeing Machinery Co., Ltd. is selected, the process speed is selected as 40 meters / minute, the front and back sides are double-sided singed, and two φ300 cold water rollers are used for cooling.

[0070] In step S12, a knitted fabric open-width alkali shrinking machine produced by Foshan Hongxin Machinery is used, the model is HSJS221, the caustic soda concentration is 140 g / L, the temperature is 75° C., and the time is 20 min.

[0071] In step S13, a continuous scouring and bleaching machine of Sanji Precision Technology is selected, model TB286A, mechanical speed: 110m / min, process speed: 100m / min, supply steam pressure: 0.3Mpa, compressed air: 0.5Mpa, supply water pressure: 0.3Mpa.

[0072] In step S14, a cotton tubular knitted fabric mercerizing machine of Shengdi Industrial Control Equipment Co., Ltd. is selected, model SD-SGJ-130, caustic soda concentration is 280g / L, temperature is 15°C (the condenser needs to dynamically control the temperature), process speed is 25m / min, alkali action time is 50s, and tension of the cloth stretching roller is 0.25Mpa.

[0073] In step S2, Huntsman's Novacron reactive dyes include Novacron Red FN-R 1% owf, Novacron Yellow FN-2R 0.1% owf, Novacron Blue FN-R 0.1% owf, 20 g / L sodium sulfate, 10 g / L soda ash, 80 g / L hydrophilic anti-staining finishing agent, bath ratio 1:40, dyeing temperature 60°C, and dyeing time: 40 min.

[0074] In steps S31 and S32, a rubber blanket calendering and pre-shrinking multifunctional machine of Tianyi (Jiangmen) Intelligent Equipment Co., Ltd., model A868RF, is selected, wherein the rubber blanket thickness is 60 cm, the line extrusion pressure is 700 N / cm, the nominal pressure is 90 T, the working temperature is ≤ 240 ° C, the process speed is 5 m / min, and the overfeed rate is 10%.

[0075] Comparative Example 4: As in the fourth embodiment, under the same knitted fabric blank, the difference is: ① Using ordinary scouring, bleaching and separation equipment and processes alone, without using open-width continuous scouring and bleaching equipment and processes; ② The alkali shrinkage process was used alone, and the alkali shrinkage and mercerizing combined process was not used; ③ Use cross-linked antistatic agents containing octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane, and do not use hydrophilic anti-hair finishing agents in the bath; ④ Separate rubber blanket pre-shrinking and calendering equipment and process, and no multifunctional rubber blanket calendering and pre-shrinking equipment and process.

[0076] The anti-staining performance indicators of the knitted fabrics obtained after being treated by the dyeing and finishing processes of Examples 1 to 4 and the dyeing and finishing processes of Comparative Examples 1 to 4 respectively are as follows.

[0077]

[0078] It can be seen from the above table that the knitted fabrics obtained after the dyeing and finishing process of Example 1, Example 2, Example 3, and Example 4 are superior to the corresponding comparative examples 1, 2, 3, and 4 in multiple anti-staining characteristics and intrinsic indicators such as static friction coefficient, dynamic friction coefficient, roughness average variation coefficient, electrostatic half-life, number of stained hair roots, water absorption rate, and air permeability.

[0079] In summary, the dyeing and finishing process of the present invention adopts a continuous scouring and bleaching process, an alkali shrinkage and mercerizing combined process, a rubber carpet calendering and pre-shrinking combined process, etc., so that the textiles have better anti-static hair staining effect and softness, moisture absorption and breathability and other wearing comfort effects. The present invention adopts a combined alkali shrinkage and mercerizing process in the pre-treatment process, which can further improve the performance of the fabric compared to the ordinary alkali shrinkage or mercerizing process alone; the mechanical properties of the fabric are improved during the alkali shrinkage process, and the gloss and orientation of the fabric are improved again during the subsequent mercerizing process, and the two concentrated alkali treatments will increase the smoothness of the fabric surface, which has a multiplier effect on reducing fabric friction and reducing electrostatic adsorption. The present invention preferably adopts an open-width continuous scouring and bleaching equipment. Compared with ordinary scouring, bleaching and separation equipment, the advantages are: first, the continuous scouring and bleaching equipment eliminates the problems of uneven components and uneven cloth surface caused by fabric adhesion impurities and fabric abrasions during the logistics transportation of ordinary scouring and separation equipment, thereby further reducing the possibility of electrostatic adhesion; second, the brush filter, spray water washing and rotor vibration water washing of the open-width continuous scouring and bleaching equipment can better remove fabric impurities, and at the same time reduce fabric abrasions and reduce static electricity. The hydrophilic anti-staining finishing agent preferably used in the present invention is a hydrophilic and oil-repellent quaternary ammonium salt anti-staining finishing agent generated by a series of elimination reactions, amination reactions, amidation reactions, amine ether reactions and halogenation reactions using high-purity ethanol. It uses a chemical method to increase the hydrophilicity of the fiber surface, promote the separation of water to the fiber interior and the hair interface, and enhance the fabric's non-staining characteristics. At the same time, it also reduces the electrostatic adsorption effect and gives the fabric a soft feel, which has a multiplier effect on the effect of anti-staining pet hair and other hair. The present invention preferably adopts a rubber blanket calendering and pre-shrinking multifunctional machine. Compared with traditional rubber blanket and calendering separation equipment, the advantage is that during the continuous calendering and rubber blanket pre-shrinking process, the external conditions of the fabric are basically consistent, the quality is highly uniform, and the flatness and glossiness of the fabric surface are higher than those of traditional separation equipment.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. Except for those explicitly stated (such as the preferred hydrophilic anti-hair-staining finishing agent), the various raw materials of the present invention can be purchased or prepared according to conventional methods in the technical field. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention; for ease of description, only the parts related to the relevant invention are shown in the accompanying drawings. In the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other; modifying the technical solutions described in the aforementioned embodiments, or replacing some of the technical features therein by equivalents, does not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dyeing and finishing process for anti-staining wool textiles, characterized in that: The method comprises the following steps: pre-treatment in step S1, dyeing in bath in step S2, and post-treatment in step S3, wherein step S1 comprises the following steps: singeing in step S11, alkali shrinking in step S12, boiling and bleaching in step S13, and mercerizing in step S14, and step S3 comprises the following steps: calendering in step S31 and pre-shrinking in step S32.

2. The dyeing and finishing process for anti-staining wool textiles according to claim 1, characterized in that: In step S13, an open-width continuous scouring and bleaching machine is used to continuously complete scouring, bleaching and washing; and / or, in step S3, a rubber blanket calendering and pre-shrinking multifunctional machine is used to continuously complete calendering and pre-shrinking.

3. The dyeing and finishing process for anti-staining wool textiles according to claim 1, characterized in that: In step S11, the processed fabric is a knitted fabric, which is made by interweaving 50wt% cotton fiber, 50wt% regenerated cellulose fiber blended yarn and 30D spandex, and has a knitted weft plain needle structure; And / or, in step S11, a knitting singeing machine is used, the process speed is 40 m / min, the front and back sides are singed, and a cold water roller is used for cooling.

4. The dyeing and finishing process for anti-staining wool textiles according to claim 1, characterized in that: In step S12, a knitted fabric open-width alkali shrinking machine is used, the caustic soda concentration is 120 g / L-140 g / L, the temperature is 75° C., and the time is 20 min.

5. The dyeing and finishing process for anti-staining wool textiles according to claim 1, characterized in that: In step S13, an open-width continuous scouring and bleaching machine is used, the process speed is 100 m / min, the steam supply pressure is 0.3 MPa, the compressed air is 0.5 MPa, and the water supply pressure is 0.3 MPa.

6. The dyeing and finishing process for anti-staining wool textiles according to claim 1, characterized in that: In step S14, a cotton tubular knitted cloth mercerizing machine is used, the caustic soda concentration is 270g / L-280g / L, the temperature is 15°C, the process speed is 25m / min, the alkali action time is 50s, and the tension of the cloth stretching roller is 0.25MPa.

7. The dyeing and finishing process for anti-staining wool textiles according to any one of claims 1 to 6, characterized in that: In step S2, a dyeing machine is used, and active dyes, sodium sulfate, soda ash and auxiliary agents are put into a dyeing machine cylinder; wherein the auxiliary agents at least include a hydrophilic anti-staining finishing agent; The preparation process of the hydrophilic anti-hair-staining finishing agent is as follows: Step A, add 99% pure ethanol and methane monooxygenase into a flask, add nitrogen into the flask until it is full, heat to 220°C-260°C under normal pressure, react fully, exhaust the gas and cool to room temperature; Step B, placing the product of step A into a high-pressure reactor, filling the high-pressure reactor with ammonia, and adding molybdenum trioxide, the reaction temperature is 220°C-260°C, the reaction pressure is 0.5MPa, after the reaction is completed, exhaust the gas and cool to room temperature; Step C, placing the product of step B into a flask, adding sufficient water, adding octadecanoic acid, and adding nitrogen to the flask until it is full, and controlling the reaction temperature between 120°C and 140°C under normal pressure. After the reaction is completed, exhaust the gas and cool to room temperature; Step D, placing the product of step C into a high-pressure reactor, adding a sufficient amount of tetrahydrofuran, vacuum dehydration in the high-pressure reactor, controlling the vacuum degree to be less than 0.1 Pa, the reaction temperature to be 110° C.-120° C., the average relative molecular mass of the product to be 2300-3600, after the reaction is completed, exhausting the gas and cooling to room temperature; Step E, placing the product of step D into a high-pressure reactor, adding sufficient methyl bromide and sufficient caustic soda, controlling the reaction temperature to 80° C., and the pressure in the high-pressure reactor to 0.6 MPa. After the reaction is completed, exhaust the gas, and dissolve the final product in propylene glycol for storage.

8. The dyeing and finishing process for anti-staining wool textiles according to any one of claims 1 to 6, characterized in that: In step S2, active dyes, 15g / L-20g / L of sodium sulfate, 10g / L-15g / L of soda ash, 80g / L-120g / L of hydrophilic anti-staining finishing agent, bath ratio 1:40, dyeing temperature 60°C-70°C, dyeing time 40min-60min are used for co-bath dyeing.

9. The dyeing and finishing process for anti-staining wool textiles according to any one of claims 1 to 6, characterized in that: In step S31, a three-roller vertical single-nip calender is used, with a process speed of 30 m / min, a nominal pressure of 80T, and a working temperature of ≤240°C; And / or, in step S32, a rubber blanket pre-shrinking machine is used, the rubber blanket thickness is 60 cm, the line extrusion force is 650 N / cm, the process speed is 6 m / min, and the overfeed rate is 10%.

10. The dyeing and finishing process for anti-staining wool textiles according to any one of claims 1 to 6, characterized in that: In step S3, step S31 and step S32 are continuously performed in a rubber blanket calendering and pre-shrinking multifunctional machine, the rubber blanket thickness is 60 cm, the linear extrusion force is 650 N / cm-700 N / cm, the nominal pressure is 80T-90T, the working temperature is ≤240°C, the process speed is 5 m / min, and the overfeed rate is 10%.

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