阅读说明：本技术 一种基于脱色率低的布料印染工艺 (Fabric printing and dyeing process based on low decolorization rate ) 是由 李奕平 于 2017-12-25 设计创作，主要内容包括：本发明公开了一种基于脱色率低的布料印染工艺,包括以下步骤：(1)烧毛；(2)染色：将胚布投入至染色池内进行染色处理；(3)挤干：经过染色后的布料采用挤干装置进行挤水处理,经过挤干之后进行开幅处理；(4)烘干:烘干：烘干前先在70℃～80℃对布料进行预烘焙处理1～5min；之后降温至40~60℃,维持5-8min后,升温至120℃～150℃,对布料进行3～8min的烘焙。本发明通过挤干装置对印染过后的布料进行挤压挤水,降低布料在烘干操作之前的含水量,提高烘干效率,从而提升整体的加工效率；且烘干前进行预烘焙,可增强染液的附着度,且布料不易过硬,保证布料的柔软度。(The invention discloses a cloth printing and dyeing process based on low decolorization rate, which comprises the following steps: (1) singeing; (2) dyeing: putting the gray cloth into a dyeing tank for dyeing; (3) and (3) squeezing: the dyed cloth is subjected to wringing treatment by adopting a wringing device, and is subjected to scutching treatment after being wrung; (4) drying: pre-baking the cloth at 70-80 ℃ for 1-5 min before drying; and then cooling to 40-60 ℃, maintaining for 5-8min, heating to 120-150 ℃, and baking the cloth for 3-8 min. According to the invention, the squeezing device is used for squeezing and wringing the printed and dyed cloth, so that the water content of the cloth before drying operation is reduced, the drying efficiency is improved, and the overall processing efficiency is improved; and the pre-baking is carried out before the drying, so that the adhesion of the dye liquor can be enhanced, the cloth is not hard too much, and the softness of the cloth is ensured.)

1. A cloth printing and dyeing process based on low decolorization rate comprises the following steps:

singeing: paving the grey cloth to be dyed, sewing the outer edges together in a circle, and then sending the sewn grey cloth into a singeing machine for singeing treatment to remove burrs and hair bulbs of the grey cloth; sending the cleaned gray cloth into a bleaching tank, and soaking in bleaching liquid; the bleaching solution comprises the following components in parts by weight: 10 parts of hydrogen peroxide, 5 parts of hydroxyethylidene diphosphonic acid, 6 parts of ammonium borate and 3 parts of sodium peroxycarbonate; the reaction temperature of the bleaching pool in the bleaching treatment process is 45 ℃, and the reaction time is 0.8 h;

dyeing: putting the gray cloth into a dyeing tank for dyeing;

and (3) squeezing: the dyed cloth is subjected to wringing treatment by adopting a wringing device, and is subjected to scutching treatment after being wrung;

drying: soaking the cloth in a soaking solution for 30min, wherein the soaking solution comprises the following components in parts by weight: 5 parts of trimethylolpropane, 2 parts of sodium hypophosphite, 1 part of sodium chloride and 0.5 part of cationic softening agent; when soaking, the reaction temperature of the soaking solution is 70 ℃, the pressure is 1.05mpa, and the reaction time is 10 min; pre-baking the cloth at 70 deg.C for 1min before drying; then cooling to 40 ℃, maintaining for 5min, heating to 120 ℃, and baking the cloth for 3 min; then cleaning the mixture in clean water at 80 ℃ for 20min, and finally sending the mixture into a dryer for drying treatment;

the wringing device comprises a frame body (1), a wringing component arranged on the frame body, a cloth tensioning device (2), a water receiving device (3) matched with the wringing component and a cloth knotting detection device (5); the water squeezing part comprises a driving part (41), a driving part (43) for driving the driving part to rotate, an upper water squeezing roller (44) and a lower water squeezing roller (45); the lower wringing roller (45) is connected with a rotary driving piece for driving the lower wringing roller (45) and the driving piece to rotate reversely, and a water leakage structure is arranged on the lower wringing roller (45);

the lower wringing roller (45) comprises a connecting rod (451) and a plurality of wringing rollers (452) arranged on the connecting rod, and a drainage gap (457) is formed between every two adjacent wringing rollers (452);

the wringing roller (452) is in interference fit with the connecting rod (451), and the connecting rod (451) is provided with a rotation stopping convex part (453) matched with the wringing roller (452);

the water leakage structure comprises a plurality of water storage tanks (454) and a plurality of water leakage channels (455) which are uniformly arranged on the wringing roller (452) at intervals, the water leakage channels (455) are used for connecting two water storage tanks (454) which are symmetrical relative to the central axis of the wringing roller (452), and the water leakage channels (455) are mutually crossed and communicated;

the cloth knotting detection device (5) is arranged on the frame body, and the cloth knotting detection device (5) can control the driving piece to stop working when the conveyed cloth is knotted or wound; the cloth knotting detection device (5) comprises a blocking part (51), a movable arm (52), a weight increasing piece (53) and a protection switch (54); the blocking part (51) is arranged on the tensioning roller, the blocking part (51) is arranged along the length direction of the tensioning roller, and the cross section of the blocking part (51) is arc-shaped, so that the distance between one side of the blocking part (51) and the surface of the tensioning roller is longer than that between the other side of the blocking part and the surface of the tensioning roller, and when the cloth is knotted or wound, the blocked part is hung; the movable arm (52) comprises a fulcrum part (521), a first arm body (522) and a second arm body (523), wherein the fulcrum part (521) is movably connected with the frame body, the fulcrum part (521) is a rotating shaft formed by two sides of the movable arm respectively extending outwards, and the fulcrum part (521) is arranged at the connecting position of the first arm body (522) and the second arm body (523), so that the movable arm is of a structure similar to a lever; the tensioning roller (21) is fixedly connected with the first arm body (522), and the weight increasing piece (53) is slidably arranged on the second arm body (523); a sliding block (531) is arranged on the weight increasing piece (53), and a sliding rail (524) matched with the sliding block is arranged on the second arm body (523); and a rolling structure for reducing the friction between the sliding block (531) and the sliding rail is arranged on the sliding block (531).

Technical Field

The invention belongs to the technical field of printing and dyeing processing, and particularly relates to a cloth printing and dyeing process based on low decolorization rate.

Background

Along with the improvement of the life quality of people, people pay more and more attention to the attractiveness of clothes. In order to meet the production of cloth with various colors and patterns, a cloth printing and dyeing process is provided, and the cloth obtained after printing and dyeing has various colors and patterns, so that the attractiveness of clothes or other cloth living goods or artware is effectively improved.

In the printed and dyed cloth, the cloth needs to be scutched through a scutching machine so as to meet the processing requirement in the later period. But because the cloth water content after printing and dyeing is very big, directly get into the scutcher and will cause printing and dyeing water to drip everywhere and spatter, not only influence workshop operational environment, and bring very big unchangeable to the stoving operation in later stage, it is extremely long consuming time to dry, and work efficiency is low. And during drying, the cloth is often and directly dried at high temperature, so that the cloth often becomes very hard and has poor softness.

Disclosure of Invention

The invention provides a cloth printing and dyeing process based on low decolorization rate, which is high in working efficiency and high in softness after cloth drying, in order to overcome the defects of the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme: a cloth printing and dyeing process based on low decolorization rate comprises the following steps:

(1) singeing: paving the grey cloth to be dyed, sewing the outer edges together in a circle, and then sending the sewn grey cloth into a singeing machine for singeing treatment to remove burrs and hair bulbs of the grey cloth;

(2) dyeing: putting the gray cloth into a dyeing tank for dyeing;

(3) and (3) squeezing: the dyed cloth is subjected to wringing treatment by adopting a wringing device, and is subjected to scutching treatment after being wrung;

(1) drying: before drying, the cloth is pre-baked for 1-5 min at 70-80 ℃; then cooling to 40-60 ℃, maintaining for 5-8min, heating to 120-150 ℃, and baking the cloth for 3-8 min; then cleaning the mixture in clean water at 80-100 ℃ for 20-40 min, and finally sending the mixture into a dryer for drying treatment.

According to the invention, the water squeezing treatment is carried out on the printed and dyed cloth before drying, so that the water content of the printed and dyed cloth is effectively reduced, inconvenience caused by dripping of water on the cloth along with the ground in the scutching process can be avoided, the water content of the cloth before drying can be reduced, the time required by drying can be greatly shortened, and the working efficiency can be improved; the baking operation is carried out before the drying, so that the adhesion of the dye liquor on the cloth can be enhanced, and the color of the cloth is not easy to fade at the later stage; secondly, the temperature is reduced for one time in the baking process, and after the temperature reduction treatment, compared with the condition that the temperature is directly increased to more than 120 ℃, the adhesive force of the dye liquor is enhanced by at least 50%, the cloth is not easy to rapidly dehydrate and becomes dry and hard, the softness of the cloth is improved by 60%, and the quality of the dried cloth is improved for one time.

Preferably, the dyeing step is preceded by a bleaching treatment comprising the steps of: sending the cleaned gray cloth into a bleaching tank, and soaking in bleaching liquid; the original color on the cloth is removed through bleaching, so that the color chroma of the dyed cloth is purer, and the variegated color is avoided.

Preferably, the bleaching solution comprises the following components in parts by weight: 10-20 parts of hydrogen peroxide, 5-12 parts of hydroxyethylidene diphosphonic acid, 6-8 parts of ammonium borate and 3-5 parts of sodium peroxycarbonate.

Preferably, the reaction temperature of the bleaching pool in the bleaching treatment process is 45-55 ℃, and the reaction time is 0.8-1.2 h; when the reaction temperature is lower than 45 ℃ and the reaction time is lower than 0.8h, the cloth material is difficult to achieve a good bleaching effect, and the treated cloth material often has a lot of variegates, so that the quality of the cloth material is influenced; when the reaction temperature is higher than 55 ℃ and the reaction time is higher than 1.2h, the bleaching solution is easy to cause excessive corrosion to the cloth, so that the cloth is damaged or the service life of the cloth in the later period is short; after research and test, the cloth can achieve good bleaching effect, can not leave variegated color, can not be excessively corroded and has long service life when the reaction temperature is maintained at 45-55 ℃ and the reaction time is maintained at 0.8-1.2 h.

Further, before the drying treatment, the cloth is soaked in a soaking solution for 30-50min, wherein the soaking solution comprises the following components in percentage by weight: 5-6 parts of trimethylolpropane, 2-3 parts of sodium hypophosphite, 1-1.5 parts of sodium chloride and 0.5-0.8 part of cationic softener; when soaking, the reaction temperature of the soaking solution is 70-80 ℃, the pressure is 1.05-1.1mpa, the reaction time is 10-20min, and then the soaking solution is sent into a dryer for drying treatment; the color of the cloth is well consolidated by mixing trimethylolpropane and sodium hypophosphite, so that the cloth is not easy to fade in the later use process; after tests, when the reaction temperature is lower than 70 ℃, the pressure is lower than 1.05mpa, and the reaction time is lower than 10min, the fading rate of the processed cloth is over 85 percent; when the reaction temperature is higher than 80 ℃, the pressure is lower than 1.1mpa, and the reaction time is lower than 20min, the fading rate of the processed cloth is over 80 percent, and the energy consumption is 2 times of that of the traditional printing and dyeing process; when the reaction temperature is maintained at 70-80 ℃, the pressure is maintained at 1.05-1.1mpa, and the reaction time is maintained at 10-20min, the fading rate of the processed cloth is below 60%, and the energy consumption is equal to or slightly less than that of the traditional printing and dyeing process.

Furthermore, the squeezing device comprises a frame body, a squeezing component arranged on the frame body, a tensioning roller and a water receiving device matched with the squeezing component; the water squeezing part comprises a driving part, a driving part for driving the driving part to rotate, an upper water squeezing roller and a lower water squeezing roller; the lower wringing roller is connected with a rotary driving piece which is used for driving the lower wringing roller and the driving piece to rotate reversely, and a water leakage structure is arranged on the lower wringing roller. According to the invention, the lower wringing roller and the driving part are driven to rotate reversely by the rotary driving part, so that the rotation reverse direction of the lower wringing roller is opposite to the moving direction of the cloth, and the upper wringing roller is not driven by power, so that the rotation direction of the upper wringing roller is opposite to the rotation direction of the lower wringing roller, the upper wringing roller and the lower wringing roller can realize the best extrusion on the cloth, the wringing effect is good, and the printing and dyeing water residue on the cloth is small; secondly, because the lower wringing roller is provided with the water leakage structure, water can be rapidly discharged through the water leakage structure in the wringing process of the lower wringing roller, the phenomenon that the squeezed water cannot be discharged is avoided, the wringing effect is further improved, and the printing and dyeing water residual rate on the cloth after wringing is reduced.

Furthermore, the lower wringing rollers comprise connecting rods and a plurality of wringing rollers arranged on the connecting rods, and drainage gaps are formed between the adjacent wringing rollers; the traditional integrally arranged wringing rollers are arranged into the plurality of wringing rollers which are distributed at intervals, so that a drainage gap exists between the adjacent wringing rollers, and extruded water can quickly flow out of the drainage gap when the wringing rollers wring cloth; simultaneously through the setting in drainage clearance, effectively increased the frictional force between wringing roller and the cloth down, avoided appearing the wringing in-process lower wringing roller and the cloth condition of skidding and unable extrusion cloth appearing, further reinforcing wringing effect.

Furthermore, the wringing roller is in interference fit with a connecting rod, and a rotation stopping convex part matched with the wringing roller is arranged on the connecting rod; through the arrangement of interference fit and the arrangement of the rotation stopping convex part, the slipping or moving of the wringing roller relative to the connecting rod in the wringing process is effectively prevented, and the condition of insufficient wringing is avoided; simultaneously set up wringing roller and connecting rod into the components of a whole that can function independently for the connecting rod can adopt the metal to make, the intensity of lower wringing roller that has increased of very big degree, the difficult emergence of lower wringing roller is damaged, the life of the extension equipment of very big degree.

Furthermore, the water leakage structure comprises a plurality of water storage grooves and a plurality of water leakage channels which are uniformly arranged on the wringing roller at intervals, the water leakage channels are used for connecting two water storage grooves which are symmetrical relative to the central axis of the wringing roller, and the water leakage channels are mutually crossed and communicated; in the water squeezing process, squeezed water can flow into the water storage tank firstly and then is discharged outwards through the water leakage channel immediately, so that the situation that the water storage tank is directly filled with the cloth material due to high water content of the cloth material, and the cloth material cannot squeeze the water completely; and because the water leakage channel is communicated with the two water storage tanks which are symmetrical relative to the central axis of the wringing roller, when water exists in the water storage tank at the upper part, the water can be quickly discharged through the water storage tank at the lower part, and the water discharging speed is high; secondly, because the plurality of water leakage channels are communicated with each other, when one water storage tank drains water, the water can be drained through the water leakage channels in different directions, and the water drainage is quicker.

Furthermore, a plurality of water squeezing convex parts are uniformly arranged on the outer surface of the water squeezing roller at intervals, and the water storage tank is positioned between every two adjacent water squeezing convex parts; through the setting of crowded water convex part, reduced the area of contact between crowded water roller and the cloth to increase the pressure between crowded water convex part and the cloth, the crowded water effect of reinforcing of very big degree.

Furthermore, the frame body is provided with a cloth knotting detection device which can control the driving piece to stop working when the conveyed cloth is knotted or wound. The printing and dyeing water squeezing device can squeeze and squeeze the printed and dyed cloth through the water squeezing component, effectively squeeze the printing and dyeing water contained in the cloth, prevent the cloth from containing too much water during scutching operation, and avoid the situation that water drops drip all around; the water receiving device is arranged, so that printing and dyeing water extruded from cloth can be collected, wastewater treatment is uniformly carried out, and pollution to the environment caused by direct discharge of the printing and dyeing water is avoided; set up the cloth detection device that ties a knot, can control the driving piece stop motion when the cloth is tied a knot or twines, after dredging to knot or twine the department, extrude the operation again, guarantee good crowded water effect, reduce the water content in the cloth.

Furthermore, the cloth knotting detection device comprises a blocking part arranged on the tensioning roller, a movable arm connected with the tensioning roller, a weighting piece arranged on the movable arm and a protection switch matched with the movable arm, wherein the protection switch is electrically connected with the driving piece; when the cloth is knotted, the blocking part blocks the movement of the knotted part, so that the cloth cannot be conveyed forwards any more, the driving part still works to pull the cloth, the tensioning roller turns upwards, the movable arm touches the protection switch, and the protection switch immediately controls the driving part to stop working; full automation operates, and work efficiency is high, and control accuracy guarantees to tie a knot at the cloth and be in that equipment can stop rapidly after the stop part contacts, avoids the cloth to be stretched by the transition and damage.

Furthermore, a stop arm matched with the movable arm is arranged on the frame body, the stop arm is arranged above the protection switch, and an anti-collision sleeve is sleeved on the end part of the stop arm; the movable arm is stopped by the stopping arm, so that the tension roller is prevented from being turned up excessively; the impact is generated between the movable arm and the stopping arm, so that the tension roller is prevented from being damaged due to impact; the anticollision cover can effectively reduce impact between the two and the resilience force that the digging arm received, avoids the rigid striking of equipment and damages long service life.

Furthermore, a crosspiece is arranged on the frame body corresponding to the upper part of the protection switch, and an anti-collision cover is arranged outside the crosspiece; stopping the movable arm through the crosspiece to prevent the tension roller from turning up excessively; the impact is generated between the movable arm and the stopping arm, so that the tension roller is prevented from being damaged due to impact; the anticollision cover can effectively reduce impact between the two and the resilience force that the digging arm received, avoids the rigid striking of equipment and damages long service life.

Furthermore, the movable arm comprises a fulcrum part, a first arm body and a second arm body which are movably connected with the frame body, and the fulcrum part is arranged at the joint of the first arm body and the second arm body; the tensioning roller is connected with the first arm body, and the weight increasing piece is slidably arranged on the second arm body; the weight increasing piece is provided with a sliding block, and the second arm body is provided with a sliding rail matched with the sliding block; when the tensioning roller upwards turned, the second arm body will turn downwards, and the weight increasing piece can slide downwards along the slide rail fast, thereby making the tensioning roller turn upwards fast, guaranteeing that the second arm body can be fast touching protection switch, avoiding the device stop slow and making the cloth by the excessively taut condition, avoiding causing the damage of cloth.

Through the arrangement of the buffer structure, the speed of the weight increasing part in the rear half section of the sliding stroke can be reduced, so that the excessive impact between the sliding block and the bottom end of the sliding rail is avoided, the damage rate of the device is reduced, and the service life of the device is prolonged; when the sliding block moves to the position of the sliding seat, the sliding seat is blocked by the limiting part and cannot directly slide downwards, so that the sliding block slides into the sliding seat, and the ball is clamped into the corresponding clamping groove; then the sliding block continues to slide downwards, the extending part is abutted to the sliding seat, and the sliding seat is further pushed to be separated from the limiting groove and slide downwards along the sliding rail; at this moment, will be by the contact conversion of ball and slide rail contact between sliding seat and the slide rail, the increase of the very big degree of frictional force between the contact surface to effectively slowed down the gliding speed of increase piece, avoided the slider when gliding to the slide rail bottom and comparatively violent striking between the slide rail.

In summary, the invention has the following advantages: the printed and dyed cloth is extruded and squeezed by the squeezing device, so that the water content of the cloth before drying operation is reduced, the drying efficiency is improved, and the overall processing efficiency is improved; and the pre-baking is carried out before the drying, so that the adhesion of the dye liquor can be enhanced, the cloth is not hard too much, and the softness of the cloth is ensured.

Drawings

FIG. 1 is a schematic view of the wringing device of the present invention.

Fig. 2 is a schematic structural view of the lower wringing roller.

Fig. 3 is a cross-sectional view of the lower wringer roller.

Fig. 4 is a schematic view of the weight-increasing member and the movable arm according to the present invention.

Fig. 5 is an enlarged view at B in fig. 4.

Fig. 6 is a cross-sectional view taken along line a-a of fig. 4.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.