CN108286196B - Polyester fabric linkage continuous printing production method - Google Patents

Polyester fabric linkage continuous printing production method Download PDF

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Publication number
CN108286196B
CN108286196B CN201810141118.4A CN201810141118A CN108286196B CN 108286196 B CN108286196 B CN 108286196B CN 201810141118 A CN201810141118 A CN 201810141118A CN 108286196 B CN108286196 B CN 108286196B
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printing
fabric
water
drying
color
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CN108286196A (en
Inventor
张国良
张建国
张斯纬
李怀京
郑江文
徐艳
张桂珍
樊素贞
孙绿洲
姜粟
潘克強
陈智
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Lianyungang Zgl Engineering Technology Research Institute Co ltd
Jiangsu Yingyou Textile Machinery Co ltd
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Lianyungang Zgl Engineering Technology Research Institute Co ltd
Jiangsu Yingyou Textile Machinery Co ltd
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    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00General 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
    • D06P1/16General 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 dispersed, e.g. acetate, dyestuffs
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06BTREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B15/00Removing liquids, gases or vapours from textile materials in association with treatment of the materials by liquids, gases or vapours
    • D06B15/04Removing liquids, gases or vapours from textile materials in association with treatment of the materials by liquids, gases or vapours by suction
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06CFINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C7/00Heating or cooling textile fabrics
    • D06C7/02Setting
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P3/00Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
    • D06P3/34Material containing ester groups
    • D06P3/52Polyesters
    • D06P3/54Polyesters using dispersed dyestuffs
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/02After-treatment
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/02After-treatment
    • D06P5/04After-treatment with organic compounds
    • D06P5/08After-treatment with organic compounds macromolecular
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/02After-treatment
    • D06P5/10After-treatment with compounds containing metal

Abstract

A linkage continuous printing production method for polyester fabrics comprises printing, drying and fixing color, washing, vacuum dewatering, drying and setting, and a multifunctional printing and fixing integrated machine and a continuous open-width vacuum dehydrator are utilized, so that a continuous, efficient and linkage production line is customized for a polyester printing workshop of textiles on the basis, and the continuity of the whole process flow of the printing workshop is realized. The on-line continuous control system is adopted, all the machine stations can be connected and can independently operate, the operation is convenient, the process is short, the production efficiency is improved, the labor intensity is reduced, the labor cost is reduced, the product quality is ensured, the energy consumption is reduced, and the sewage discharge is reduced. The disperse dye is selected and the multifunctional printing paste is independently researched and developed in the production process, so that the hot melting condition is effectively guaranteed, the color of the fabric is bright, the color yield is improved by 5-30%, the printing fastness is improved, and the problems that the hot melting printing color of the polyester fabric is not bright and the color yield is not deep in the printing and dyeing industry are solved.

Description

Polyester fabric linkage continuous printing production method
Technical Field
The invention relates to the technical field of textile dyeing and finishing, in particular to a polyester fabric linkage continuous printing production method.
Background
The printing is a local dyeing process, which is a processing process of preparing color paste by dye or paint, paste, auxiliary agent and other necessary chemical agents, applying the color paste on the textile by printing equipment and printing a pattern. At present, terylene fleece textile printing equipment mainly adopts flat screen printing, rotary screen printing, roller printing and the like, and flat screen printing and rotary screen printing account for 90% of textile printing in the market according to incomplete statistics. The process flow of the conventional polyester fabric printing production line is as follows: printing grey cloth → screen printing → drying → high temperature and high pressure steaming (or atmospheric pressure and high temperature long ring steaming) → water washing → dehydration → cloth arrangement → drying and shaping, except that the screen printing and drying are on-line, other procedures are separately produced and operated in sections. The process has the advantages of multiple process flows, long production period, high production labor intensity, more labor, low production efficiency, high energy consumption, large occupied area, unsmooth production logistics, easy grey cloth overstock and influence on the style quality of the polyester fabric.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art and provides a polyester fabric linkage continuous printing production method which is continuous and efficient, and has bright printing and dyeing color and deep color.
The invention aims to solve the technical problem by adopting the following technical scheme, and the polyester fabric linkage continuous printing production method is characterized by comprising the following steps of:
(1) continuous printing
The polyester fabric enters the printing machine through the printing cloth feeding unit, and the multifunctional less-washing printing dye is adopted, and the formula of the multifunctional less-washing printing dye is as follows:
0.001-5% of disperse dye, 0.5-3.5% of printing paste, 0.001-4.0% of thickening agent, 0.001-3% of wetting agent, 0.001-1% of reduction inhibitor, 0.001-3% of leveling agent and 0.001-1% of defoaming agent are added into the water by weight;
firstly, blending disperse dye with water to fully dissolve the dye, filtering, adding the filtered disperse dye into the uniformly stirred printing paste under continuous stirring, then adding a thickening agent, a wetting agent, a reduction inhibitor, a leveling agent and a defoaming agent, heating to 60-70 ℃, and rapidly stirring to fully expand molecules in the color paste;
carrying out multi-color printing by a hot-melt dyeing method;
(2) drying and color fixing
The printed fabric enters a continuous drying and fixing integrated machine:
the drying part is at least provided with two layers, the printing front side of the first layer of fabric faces outwards, the temperature is adjustable within the range of 60-110 ℃, and the fiber is bulked to promote the diffusion of dye in the fiber; the back of the second layer faces outwards, the temperature is adjustable within the range of 100-;
the hot-melting fixation part has the baking fixation temperature of 130-230 ℃ to promote the dye particles to be well fixed on the fiber;
(3) washing with water
After drying and color fixing, the fabric enters a washing machine to remove printing loose color, residual paste and other auxiliary agents,
the water washing process comprises the following steps:
washing with clear water, warm water reduction washing, warm water washing, acid washing neutralization, clear water washing and softening agent application;
wherein the reduction cleaning formula comprises sodium hydrosulfite 0.1-2 g/L, caustic soda 0.1-2 g/L, detergent 0.1-3 ml/L, and water in balance;
acid washing neutralization is to add 0.1-1 m/L acid into water for neutralization treatment in order to ensure that the pH value of the fabric is neutral;
the formula of the softening solution used in the upper softening agent is as follows: 0.1-5% of silicone oil softening agent, 0.1-5% of smoothing agent, 0.1-5% of antistatic agent and the balance of water;
(4) vacuum dehydration
Adopts a belt pressing type vacuum dehydration device, which comprises a vacuum water absorption device for absorbing the moisture of the fabric and a rotary belt pressing mechanism arranged above the vacuum water absorption device for adjusting the moisture permeability of the fabric,
compacting the fabric passing through the vacuum water absorption device through a press belt, keeping the air permeability of the fabric, acquiring a selvedge distance signal according to a photoelectric tube, and realizing the tracking sealing of a water absorption port covered by the fabric through a control unit and a servo driving mechanism, wherein the water content is reduced to 15-40%;
(5) drying and shaping
And (3) carrying out online drying and setting treatment on the printed fabric subjected to vacuum dehydration at the temperature of 80-230 ℃, and re-stabilizing the fabric shape and width.
The technical problem to be solved by the invention can be further realized by the following technical scheme, and the continuous printing comprises a flat screen printing machine, a rotary screen printing machine or a roller printing machine.
The technical problem to be solved by the invention can be further realized by the following technical scheme that the drying and color fixing integrated machine comprises 9 layers of tension-free conveying mesh belts, including an upper part 3 layers of drying mesh belts and a lower part 6 layers of color fixing mesh belts.
The technical problem to be solved by the invention can be further realized by the following technical scheme that the vacuum water absorption device is provided with a vacuum suction pipe, a water suction port is axially arranged on the pipe wall from one end of the vacuum suction pipe to the other end of the vacuum suction pipe, two ends in the vacuum suction pipe are provided with sealing pistons corresponding to the width of the adsorbed fabric, a servo driving mechanism for driving the sealing pistons is arranged outside the vacuum suction pipe, a photoelectric detection device for detecting the width of the fabric is arranged on the cloth feeding side of the vacuum suction pipe, and the photoelectric detection device is connected with the servo driving mechanism through a control unit.
Compared with the prior art, the continuous printing and drying integrated machine and the continuous open-width vacuum dehydrator are utilized, on the basis, a continuous, efficient and linked production line is customized for a textile polyester printing workshop, and the continuity of the whole process flow of the printing workshop is realized. The on-line continuous control system is adopted, all the machine stations can be connected and can independently operate, the operation is convenient, the process is short, the production efficiency is improved, the labor intensity is reduced, the labor cost is reduced, the product quality is ensured, the energy consumption is reduced, and the sewage discharge is reduced. The disperse dye is selected and the multifunctional printing paste is independently researched and developed in the production process, so that the hot melting condition is effectively guaranteed, the color of the fabric is bright, the color yield is improved by 5-30%, the printing fastness is improved, and the problems that the hot melting printing color of the polyester fabric is not bright and the color yield is not deep in the printing and dyeing industry are solved.
Detailed Description
The following further describes particular embodiments of the present invention to facilitate further understanding of the present invention by those skilled in the art, and does not constitute a limitation to the right thereof.
A polyester fabric linkage continuous printing production method comprises the following steps:
(1) continuous printing
The polyester fabric enters the printing machine through the printing cloth feeding unit, and the multifunctional less-washing printing dye is adopted, and the formula of the multifunctional less-washing printing dye is as follows:
0.001-5% of disperse dye, 0.5-3.5% of printing paste, 0.001-4.0% of thickening agent, 0.001-3% of wetting agent, 0.001-1% of reduction inhibitor, 0.001-3% of leveling agent and 0.001-1% of defoaming agent are added into the water by weight;
firstly, blending disperse dye with water to fully dissolve the dye, filtering, adding the filtered disperse dye into the uniformly stirred printing paste under continuous stirring, then adding a thickening agent, a wetting agent, a reduction inhibitor, a leveling agent and a defoaming agent, heating to 60-70 ℃, and rapidly stirring to fully expand molecules in the color paste;
carrying out multi-color printing by a hot-melt dyeing method;
(2) drying and color fixing
The printed fabric enters a continuous drying and fixing integrated machine:
the drying part is at least provided with two layers, the printing front side of the first layer of fabric faces outwards, the temperature is adjustable within the range of 60-110 ℃, and the fiber is bulked to promote the diffusion of dye in the fiber; the back of the second layer faces outwards, the temperature is adjustable within the range of 100-;
the hot-melting fixation part has the baking fixation temperature of 130-230 ℃ to promote the dye particles to be well fixed on the fiber;
(3) washing with water
After drying and color fixing, the fabric enters a washing machine to remove printing loose color, residual paste and other auxiliary agents,
the water washing process comprises the following steps:
washing with clear water, warm water reduction washing, warm water washing, acid washing neutralization, clear water washing and softening agent application;
wherein the reduction cleaning formula comprises sodium hydrosulfite 0.1-2 g/L, caustic soda 0.1-2 g/L, detergent 0.1-3 ml/L, and water in balance;
acid washing neutralization is to add 0.1-1 m/L acid into water for neutralization treatment in order to ensure that the pH value of the fabric is neutral;
the formula of the softening solution used in the upper softening agent is as follows: 0.1-5% of silicone oil softening agent, 0.1-5% of smoothing agent, 0.1-5% of antistatic agent and the balance of water;
(4) vacuum dehydration
Adopts a belt pressing type vacuum dehydration device, which comprises a vacuum water absorption device for absorbing the moisture of the fabric and a rotary belt pressing mechanism arranged above the vacuum water absorption device for adjusting the moisture permeability of the fabric,
compacting the fabric passing through the vacuum water absorption device through a press belt, keeping the air permeability of the fabric, acquiring a selvedge distance signal according to a photoelectric tube, and realizing the tracking sealing of a water absorption port covered by the fabric through a control unit and a servo driving mechanism, wherein the water content is reduced to 15-40%;
(5) drying and shaping
And (3) carrying out online drying and setting treatment on the printed fabric subjected to vacuum dehydration at the temperature of 80-230 ℃, and re-stabilizing the fabric shape and width.
Continuous printing includes flat screen printing, rotary screen printing or roller printing.
Drying fixation all-in-one is including being equipped with 9 layers of no tension conveying mesh belt, include 3 layers of drying mesh belt of upper portion and lower part 6 layers of fixation mesh belt.
The vacuum water absorption device is provided with a vacuum suction pipe, a water absorption port is axially arranged on the pipe wall from one end of the vacuum suction pipe to the other end of the vacuum suction pipe, sealing pistons corresponding to the width of the adsorbed fabric are arranged at two ends in the vacuum suction pipe, a servo driving mechanism for driving the sealing pistons is arranged outside the vacuum suction pipe, a photoelectric detection device for detecting the width of the fabric is arranged on the cloth feeding side of the vacuum suction pipe, and the photoelectric detection device is connected with the servo driving mechanism through a control unit.
The printing of the terylene textile is a processing method which takes paste as a carrier and uses dye to print patterns, so the selection of the printing paste and the dye is very critical. The dye selects disperse dye, and multifunctional less-washing printing paste AP03 is independently developed.
The AP03 printing paste is a high-molecular multifunctional compound, has high effective active ingredients, good water holding capacity, no color, easy washing and small using amount; the color yield is high, and compared with the traditional method, the dye yield can be improved by 5-30%, the exhaustion dyeing performance is good, and the color fastness is good; the edge of the flower is clear, the color is bright, the printed residues are less, the hand feeling is soft and fluffy, and the product can be washed with less water.
The less-washing printing paste formula comprises the following components:
disperse dye (disperse dye) 0.001-5%
Multifunctional less-washing printing paste AP030.5-3.5%
0 to 4.0 percent of thickening agent
0 to 3 percent of wetting agent
0.001-1% of reduction inhibitor
0 to 3 percent of leveling agent
0 to 1 percent of defoaming agent
Proper amount of water
The total amount is 100kg
Preparing color paste:
the method is consistent with the traditional printing color paste preparation method, firstly, the disperse dye is blended by water to fully dissolve the dye, the dye is added into the uniformly stirred paste under continuous stirring after being filtered, then, the necessary auxiliary agent is added, and the paste is uniformly stirred to fully expand the molecules in the color paste.
The printing method comprises the following steps: the polyester fabric enters a printing machine through a printing cloth feeding unit, and multi-color printing is carried out by using a hot-melt dyeing method by using less washing printing paste. The color paste has good homogeneity and rheological property, fills in the whole fiber, ensures that the pattern definition and the color yield are good, and is beneficial to improving the dye balanced dyeing.
L MV633G multi-layer baking and fixing integrated machine is used for drying and fixing printed fabrics, adopts the technology of the applicant's own patent (201720166200.3), and totally 9 layers of tension-free conveying mesh belts comprise 3 layers of mesh belts for drying the upper part, 6 layers of mesh belts for fixing the lower part, corresponding middle heat insulation baffles, a frame, a heating and air supply device and the like.
Basic parameters and main performance indexes
Effective breadth width: 2500mm
The running speed is as follows: 5-120 m/min
Number of drying layers: 3
Number of color fixing layers: 6
Drying and color fixing stroke: 225 m
Drying temperature: 60 to 220 ℃, the drying time is 0 to 40 minutes, the curing and fixation temperature is 130 and 230 ℃, the curing time is 0.5 to 30 minutes, and the curing and fixation integration time is 0.5 to 60 minutes.
High efficiency washing (open width washing machine, open width rope shape combined washing machine)
The fabric is dried and fixed, and then enters a washing machine to remove printing flooding, oligomers and residual paste and other auxiliary agents, improve color vividness, ensure that the color fastness of the fabric meets the standard requirement, and improve the hand feeling of the fabric, the formula of the used reduction cleaning solution comprises 0-2 g/L of sodium hydrosulfite, 0-2 g/L of caustic soda, 0-3 ml/L of detergent, other surfactants and the balance of water, the process conditions are that 1-to-many-groove reduction cleaning treatment is carried out at the temperature of 100 ℃, 0-1 ml/L of acid is added into the water for neutralization treatment to ensure the pH value of the fabric after the reduction cleaning treatment, and finally 1-2 grooves are carried out softening treatment,
the formulation of the softening solution used was: 0-5% of silicone oil softening agent, 0-5% of smoothing agent, 0-5% of antistatic agent and the like.
And (3) a water washing process:
no. 1 water tank clear water
2-4 number groove reduced cleaning by warm water below 100 DEG C
No. 5-7 trough warm water
Neutralization by No. 8 acid washing
9-10 clear water
No. 11-12 softening agent
The open width vacuum dewatering machine is used for dewatering fabric and removing excess water on the surface of the fabric, and adopts the patent technology of the applicant (patent number 201610302740. x), one of the characteristics is that the press belt type vacuum dewatering machine comprises a vacuum water suction device for sucking the water of the fabric, a rotary press belt mechanism arranged above the vacuum water suction device for adjusting the water permeability of the fabric, and a dewatering reflux control device, the water containing auxiliary agent is removed and then flows back to the washing machine.
The vacuum water absorption device is provided with a vacuum suction pipe, a water absorption port is axially arranged on the pipe wall from one end of the vacuum suction pipe to the other end of the vacuum suction pipe, two ends in the vacuum suction pipe are provided with sealing pistons corresponding to the width of the adsorbed fabric, a servo driving mechanism for driving the sealing pistons is arranged outside the vacuum suction pipe, a photoelectric detection device for detecting the width of the fabric is arranged on the cloth feeding side of the vacuum suction pipe, the photoelectric detection device is connected with the servo driving mechanism through a control unit and is connected with a dehydration backflow control device, and a grey cloth online photoelectric detection device is arranged above the cloth feeding rack and controls online operation of grey cloth.
The rotary type belt pressing mechanism comprises a swing frame and a belt pressing mechanism, a driving roller, a driven roller and a deviation correcting roller are arranged on the swing frame, the belt pressing mechanism is tightly supported between the three rollers, adjusting screw rods for adjusting the center distance between the driving roller and the driven roller are arranged at the two ends of the driven roller, the adjusting screw rods are arranged on the swing frame, and an adjusting cylinder for driving the swing frame to adjust the belt pressing mechanism around the driving roller to press the wrap angle between the belt pressing mechanism and the vacuum suction pipe is arranged below the swing frame.
The invention compacts the fabric on the vacuum suction pipe through the press belt, keeps the proper air permeability of the fabric, ensures the effective vacuum area in the vacuum suction pipe, is particularly suitable for knitted plush, woolen blanket and woven plush products with strong air permeability, and the press belt and the fabric run synchronously, reduces the friction between the press belt and the fabric, and does not influence the cloth feeding speed and the quality of the fabric.
According to the cloth edge distance signal collected by the photoelectric tube, the tracking and sealing of the sealing piston on the water suction port which is not covered by the fabric on the vacuum suction tube are realized through the control unit and the servo driving mechanism, so that the air leakage at the water suction port is prevented, the vacuum water suction effect is reduced, and a good dehydration effect is realized.
The characteristics are as follows: the water absorption capacity is adjustable; the cloth discharging speed is adjustable; the water absorption is uniform, and the water content of the fabric can be reduced to 40-15% after water absorption.
The continuous open-width vacuum dehydrator has good dehydration effect, so that the fabric has no crease, smooth and smooth surface, the wool effect of the wool fabric is loose, fresh and upright, and the special style of the wool is embodied. The dehydration reflux device is adopted, energy is saved, consumption is reduced, the production efficiency is improved by more than 30% compared with the traditional cylinder centrifugal dehydrator, labor production labor is reduced, the production flow is shortened, and the production continuity is realized.
The drying and shaping unit is used for drying and shaping the washed and vacuum-absorbed printed fabric, and re-stabilizing the shape and the width of the fabric, wherein the drying at least comprises heating modes such as gas, steam, far infrared, electricity, heat conduction oil, microwaves and the like, and the fabric feeding mode at least comprises a contact type fabric guide roller, a needle chain stretching needle plate device, a drying room, cold air and an output device. Drying and setting temperature: and (4) falling the fabric by cold air at the temperature of between 80 and 230 ℃.
The technological parameters are as follows:
temperature: the proper temperature is determined according to the color and style of the product at 80-230 DEG C
Air volume feeding: 0 to 2000 rpm
Air volume: 1000-
According to the polyester fabric linkage continuous printing production method, the fabric enters a printing machine (flat screen printing machine or rotary screen printing machine and other types of printing machines) through a printing cloth feeding unit, and multi-color printing is carried out by applying independently developed multifunctional printing soft paste AP03 and an environment-friendly disperse dye through a hot-melt dyeing method. Innovatively improving the color paste formula, optimizing the printing production line process, enabling the printed fabric to enter a first layer at the upper end of a drying and fixing all-in-one machine drying mesh belt, enabling the fabric to pass through the first layer by layer, enabling a fourth layer to enter a hot-melting and fixing part, outputting the hot-melting and fixing part from a last ninth layer, and enabling the drying temperature of the first three layers to be the drying temperature: 60-220 ℃, the baking fixation temperature is 130-: 0.5-60 minutes, drying and color fixing speed: 5-120 m/min, drying and fixing color to lead the dye to develop color, and promote dye particles to be well fixed on the fiber, then the fiber enters a washing unit, after washing, the liquid carrying rate of the fabric is reduced to 40% -15% by dewatering through a continuous open width vacuum dewatering machine, after the open width vacuum dewatering, the fabric has good appearance quality, and the fabric continuously enters a drying and setting machine to carry out drying and setting treatment on the fabric, thereby stabilizing the fabric shape. Through the design of the linkage all-in-one machine, continuous production operation of printing, drying and fixing, washing, vacuum dewatering and drying and shaping is realized, and continuous production in a printing workshop is realized. The on-line continuous control system is adopted, all the machine stations can be connected and can independently operate, the operation is convenient, the process is short, the production efficiency is improved, the labor intensity is reduced, the labor cost is reduced, the product quality is ensured, the energy consumption is reduced, and the sewage discharge is reduced. The disperse dye is selected and the multifunctional printing paste is independently researched and developed in the production process, so that the hot melting condition is effectively guaranteed, the color of the fabric is bright, the color yield is improved by 5-30%, the printing fastness is improved, and the problems that the hot melting printing color of the polyester fabric is not bright and the color yield is not deep in the printing and dyeing industry are solved.
The color paste of the invention is characterized in that:
(1) the uniformity and the rheological property are good, and the color paste for printing the fabric can be filled in the whole fiber, so that the improvement of the balanced dye uptake of the dye is facilitated; the stability in the drying fixation is excellent;
(2) good water holding capacity and good wettability, and can lock effective moisture in a drying and color fixing dry-hot state, so that the fabric printing pattern has good definition, good vividness and high color yield.
(3) The active ingredients of the color paste have strong activity, the dyeing property is good to the utmost extent, and the printing residues are few after the color is dried and fixed.
The invention relates to a drying and color fixing integrated process
The hot melting temperature must be determined strictly according to the nature of the dye used for printing and the polyester variety, so as to prevent the dye from staining the white ground when sublimed and obtain higher fixation rate, the baking time will depend on the baking temperature, and the lower temperature is longer. The general baking time depends on the temperature, the flow rate of hot air sprayed to the fabric and the flow rate of moisture-removing exhaust.
The function of the exhaust fan is to remove moisture generated by drying the printed fabrics in the drying room. The exhaust fan and the circulating fan are both adjusted by frequency conversion, humidity sensing air is arranged in the drying room to detect the air humidity of the drying room, and the rotating speed of the exhaust air volume is controlled by frequency conversion to adjust the temperature in the drying room. The air volume of the exhaust fan 2800 and 6200 cubic meter/h.
After the fabric is printed, the fabric enters a drying room through a polyester conduction band driven by a driving roller, and the fabric enters a first drying conveying net belt by means of the pressure of a hot air nozzle, wherein the front surface of the printed fabric faces upwards, the first drying is very important, most of moisture in color paste is dried out by drying, when the fabric runs to a second drying, the front surface of the printing faces downwards and is directly contacted with the conveying net belt, otherwise, the fabric is easily stained; after drying, reducing 40-100% of the amount of the color paste of the printed fabric to 4.0-35%, in a dry and hot state, locking effective moisture by the color paste to facilitate moisture absorption and expansion of the fiber, transferring dye molecules from the color paste to the fiber, diffusing the dye molecules into the fiber and fixing the dye molecules with the fiber; the printed fabric passes through layer by layer, enters a hot-melting baking fixation part and is output from the last step; during heating of the baking and color fixing part, the color paste continuously forms a film on the surface of the fiber, the effective moisture is locked at 0.5-30%, the terylene generates enough instant gaps between fibers at high temperature, and the molecular thermal motion speed of the disperse dye is increased, so that the disperse dye is favorable for diffusing and fixing into the fiber, the exhaustion dyeing property of the dye is improved, the utilization rate of the dye is improved, the high color yield and the color fastness are obtained, the level dyeing property of the printed fabric is good, the color is bright, and the color is bright; the structure is soft, and the hand feeling is soft and smooth. Solves the problems of hot-melt printing and dyeing color vividness and color depth which are always puzzled in the printing and dyeing industry.
The printing and hot melting method has the following technological parameters:
the amount of the color paste of the printed fabric is as follows: 40-100%;
amount of color paste after printing and drying ("effective water lock"): 4.0 to 35 percent;
amount of charged paste after drying fixation ("effective water lock"): 0.5 to 30 percent
Drying temperature: drying at 60-220 deg.c for 0-40 min;
baking fixation temperature: at the temperature of 130 ℃ and 230 ℃, the baking time is 0.5-30 minutes;
drying and color fixing integrated time is 0.5-60 minutes;
the running speed is as follows: 5-120 m/min
The key technology of the hot-melt printing process is that effective moisture is locked in a dry and hot state, so that the printed patterns of the fabrics have good definition, good vividness and high color yield.
The continuous open-width vacuum dehydration process method comprises the following steps:
the belt pressing type vacuum dewatering device is used for dewatering fabric and removing redundant water on the surface of the fabric, is used as an active mode for controlling the liquid carrying capacity of the fabric, replaces a traditional intermittent cylindrical centrifugal dewatering machine, and realizes the continuity of a printing production line.
The fabric after the printing and washing has the bound water and the free water, the vacuum water absorption system forms negative pressure inside and outside the water absorption pipe through the vacuum pump, and the free water is absorbed when the fabric passes through the water absorption port. Although the time for the wet fabric to slide through the water suction port is very short, the cloth speed is 5-120 m/min, the pressure difference is used for pumping and absorbing energy to obtain lower residual liquid, the vacuum negative pressure is 30-80kpa, the constant pressure vacuum water suction system is adopted for controlling, the fabric subjected to vacuum dehydration is flat and has no deformation of a tissue structure, and the method is particularly suitable for continuous dehydration of velvet, blankets, woven fabrics, knitted fabrics and the like. The vacuum dewatering device has a remarkable effect in finishing hydrophobic chemical fibers and blended fabrics thereof.
The drying and shaping unit is used for drying and shaping the printed fabric after vacuum water absorption, and continuously removing redundant free water and combined water by using dry hot air in drying to achieve the drying purpose, wherein the water content of the fabric is controlled to be 0.4-6%, and the fabric shape and breadth are re-stabilized.
The technological parameters are as follows:
the effective width of the fabric is wide: 600-4000mm
Real-time vacuum negative pressure: 30-80kpa
Linkage vacuum allowable frequency: 10-80HZ
The running speed of the fabric is as follows: 5-120 m/min
Fabric dewatering amount: the liquid carrying rate is reduced to 15-40% from 40-85% after the printing is washed by water
Drying and setting technological parameters:
drying and setting temperature: at 80-230 deg.c, proper temperature is determined based on the color, style and fabric variety of the product.
Cooling cropping
Air volume feeding: 0 to 2000 rpm
Air volume: 1000-
Liquid carrying rate of the fabric: the liquid carrying rate of 15-40% after vacuum dehydration of the fabric is reduced to 0.4-6%.
The moisture content of the fabric is an important index in the drying process, energy and time are wasted due to over-drying, and the quality of the fabric is affected due to insufficient drying, so that the humidity of the fabric is very important to be accurately controlled, the air displacement is controlled by the setting online humidity detection device, the rotating speed of the air displacement is controlled by frequency conversion to adjust the temperature in the drying room, a thermocouple signal of a PID temperature control system is fed back to the controller to feed back a burner according to the information of the controller, the air inflow is controlled according to the signal of a heat source, and the running speed of the fabric is controlled within a set value according to the temperature, so that the process is achieved. A grey cloth on-line photoelectric detection device is arranged above a cloth feeding rack of the continuous open-width vacuum dehydration device, the fabric running of a front printing water machine is detected and fed back to the linkage controller, and the grey cloth on-line running is controlled through a linkage control signal.

Claims (3)

1. A polyester fabric linkage continuous printing production method is characterized by comprising the following steps:
(1) continuous printing
The polyester fabric enters the printing machine through the printing cloth feeding unit, and the multifunctional less-washing printing dye is adopted, and the formula of the multifunctional less-washing printing dye is as follows:
0.001-5% of disperse dye, 0.5-3.5% of printing paste AP03, 0.001-4.0% of thickening agent, 0.001-3% of wetting agent, 0.001-1% of reduction inhibitor, 0.001-3% of leveling agent and 0.001-1% of defoaming agent are added into the water by weight;
firstly, blending disperse dye with water to fully dissolve the dye, filtering, adding the filtered disperse dye into the uniformly stirred printing paste under continuous stirring, then adding a thickening agent, a wetting agent, a reduction inhibitor, a leveling agent and a defoaming agent, heating to 60-70 ℃, and rapidly stirring to fully expand molecules in the color paste;
carrying out multi-color printing by a hot-melt dyeing method;
(2) drying and color fixing
The printed fabric enters a continuous drying and fixing integrated machine:
the drying part is at least provided with two layers, the printing front side of the first layer of fabric faces outwards, the temperature is adjustable within the range of 60-110 ℃, and the fiber is bulked to promote the diffusion of dye in the fiber; the back of the second layer faces outwards, the temperature is adjustable within the range of 100-;
the hot-melting fixation part has the baking fixation temperature of 130-230 ℃ to promote the dye particles to be well fixed on the fiber;
(3) washing with water
After drying and color fixing, the fabric enters a washing machine to remove printing loose color, residual paste and other auxiliary agents,
the water washing process comprises the following steps:
washing with clear water, warm water reduction washing, warm water washing, acid washing neutralization, clear water washing and softening agent application;
wherein the reduction cleaning formula comprises sodium hydrosulfite 0.1-2 g/L, caustic soda 0.1-2 g/L, detergent 0.1-3 ml/L, and water in balance;
acid washing neutralization is to add 0.1-1 m/L acid into water for neutralization treatment in order to ensure that the pH value of the fabric is neutral;
the formula of the softening solution used in the upper softening agent is as follows: 0.1-5% of silicone oil softening agent, 0.1-5% of smoothing agent, 0.1-5% of antistatic agent and the balance of water;
(4) vacuum dehydration
Adopts a belt pressing type vacuum dehydration device, which comprises a vacuum water absorption device for absorbing the moisture of the fabric and a rotary belt pressing mechanism arranged above the vacuum water absorption device for adjusting the moisture permeability of the fabric,
compacting the fabric passing through the vacuum water absorption device through a press belt, keeping the air permeability of the fabric, acquiring a selvedge distance signal according to a photoelectric tube, and realizing the tracking sealing of a water absorption port covered by the fabric through a control unit and a servo driving mechanism, wherein the water content is reduced to 15-40%;
(5) drying and shaping
And (3) carrying out online drying and setting treatment on the printed fabric subjected to vacuum dehydration at the temperature of 80-230 ℃, and re-stabilizing the fabric shape and width.
2. The polyester fabric linkage continuous printing production method according to claim 1, which is characterized in that: continuous printing includes flat screen printing, rotary screen printing or roller printing.
3. The polyester fabric linkage continuous printing production method according to claim 1, which is characterized in that: the vacuum water absorption device is provided with a vacuum suction pipe, a water absorption port is axially arranged on the pipe wall from one end of the vacuum suction pipe to the other end of the vacuum suction pipe, sealing pistons corresponding to the width of the adsorbed fabric are arranged at two ends in the vacuum suction pipe, a servo driving mechanism for driving the sealing pistons is arranged outside the vacuum suction pipe, a photoelectric detection device for detecting the width of the fabric is arranged on the cloth feeding side of the vacuum suction pipe, and the photoelectric detection device is connected with the servo driving mechanism through a control unit.
CN201810141118.4A 2018-02-11 2018-02-11 Polyester fabric linkage continuous printing production method Active CN108286196B (en)

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CN112359472A (en) * 2020-11-18 2021-02-12 连云港飞雁毛毯有限责任公司 Production method of warp-knitted raschel blanket
CN114541153A (en) * 2022-03-04 2022-05-27 连云港鹰游新立成纺织科技有限公司 Washing-free flash-dyeing production method of textile
CN115787326A (en) * 2022-11-29 2023-03-14 石狮市瑞鹰纺织科技有限公司 Blended fiber printing and dyeing auxiliary and preparation method thereof

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CN106894223B (en) * 2017-02-23 2019-07-02 连云港鹰游工程技术研究院有限公司 A kind of energy conservation and environmental protection of fabric continuously washes dye and dries solid method
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Denomination of invention: A production method of linkage continuous printing of polyester fabric

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