Dyeing process of flannelette

Abstract

The invention discloses a flannelette dyeing process, and relates to the technical field of dyeing processes, and the technical scheme is characterized in that the flannelette dyeing process comprises the following steps: gray fabric preparation, singeing, desizing, pretreatment, raising, dyeing, soaping and shaping. The flannelette dyeing process is simple and orderly in steps, good in process continuity, capable of automatically adding dye liquor and high in efficiency, so that the quality of the dye liquor is guaranteed, the defective rate is reduced, samples can be easily taken out for observation by arranging the sample cylinder, response measures can be taken in time, the dyeing effect is guaranteed, and the quality of the flannelette is improved. The tedious operation of continuous stirring is avoided, so that the operation is time-saving and labor-saving, and the production efficiency of the dyed flannelette is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of dyeing technology, in particular to a dyeing technology for flannel. Background Art

[0002] Flannel is a fabric with a rich and fluffy surface after brushing. The surface of the fabric is treated with napping to produce more fluff, a strong three-dimensional effect, high gloss, and a soft and thick feel. Flannel is soft, comfortable to wear, and has good warmth retention. It is suitable for winter underwear, pajamas, and outerwear.

[0003] During the processing of velvet, printing and dyeing are usually required, which includes dyeing and printing.

[0004] Dyeing means dyeing with color, also known as coloring. Fabric dyeing refers to the process of treating textile materials with dye baths to make the dye and fiber chemically or physically combine, or to generate insoluble colored substances on the fiber. The dye should have a certain resistance to washing, sun exposure, friction, etc. on the fiber. This property is called color fastness. Traditional dyeing is divided into two methods: immersion dyeing and pad dyeing.

[0005] At present, the existing flannel dyeing process has inconsistent operation steps, the dye solution needs to be added manually, the defective rate is high, and the flannel in the dye vat needs to be continuously stirred during the dyeing process to observe the dyeing condition. Since the dye vat is deep, the stirring operation is time-consuming and labor-intensive, resulting in low production efficiency. Summary of the invention

[0006] The purpose of the present invention is to provide a flannel dyeing process in order to solve the above-mentioned problem.

[0007] The present invention achieves the above-mentioned purpose through the following technical scheme, a flannel dyeing process comprises the following steps: 1) Grey fabric preparation: inspect the original fabric, turn it over, sew the ends, check the quality of the grey fabric, and remove defective products; 2) Singeing: Place the blank in the singeing machine so that the blank quickly passes through the high-temperature flame to burn off the fluff on the surface of the blank; 3) Desizing: The secondary alkali rolling and stacking process is adopted. The grey cloth treated in step 2) is first passed through the alkali rolling machine, and sodium hydroxide is added as an alkali agent to make the grey cloth evenly alkali-coated. The alkali-rolled fabric is then stacked in a loose state to allow the alkali solution to fully penetrate and act on the grey cloth. The stacked fabric is then passed through the alkali rolling machine again to ensure that the alkali solution is evenly distributed on the surface and inside of the grey cloth. Finally, the grey cloth is rinsed with hot water to remove residual impurities. 4) Pretreatment: first, the grey cloth treated in step 3) is subjected to refining and bleaching treatments in sequence, and then the grey cloth is placed in a clip mercerizing machine and mercerized with a caustic soda solution; 5) raising the nap: placing the blank processed in step 4) on a napping machine, starting the napping machine to raise the nap to make a velvet cloth, and washing the velvet cloth to remove the short nap attached to the surface; 6) Dyeing: First, prepare the dyeing system for debugging. Inject clean water into the dyeing tank through the water supply system, and inject dye into the dyeing tank through the feeding system. After mixing, dye liquor is formed, and the dye liquor flows into the sample tank at the same time. Then, cut a sample from the flannel made in step 5), immerse the flannel into the dyeing tank for dyeing, and immerse the sample into the sample tank for dye bathing. During the dyeing process, the dyeing condition of the sample in the sample tank is observed to judge the dyeing condition. After dyeing, the dyed flannel is obtained, and the dyeing wastewater is discharged through the drainage system for treatment; 7) Soap washing: the dyed wool treated in step 6) is placed in a soap washing machine for cyclic soap washing to remove floating colors and impurities; 8) Shaping: The dyed flannel treated in step 7) is dried and shaped, and smoothed to obtain a finished product.

[0008] As a further configuration of the present invention, the dye is composed of the following components in parts by weight: Disperse dye 30-50 parts; Dispersant 5-10 parts; 5-10 parts of organic solvent; 1-3 parts of sodium hydroxide; The balance was deionized water.

[0009] As a further configuration of the present invention, the dyeing system includes a dyeing tank, a feeding system, a water supply system and a drainage system. A sample cylinder is arranged on the dyeing tank, and the dyeing tank and the sample cylinder are interconnected through a flow pipe.

[0010] As a further configuration of the present invention, the feeding system includes a support frame, a plurality of feeding devices are arranged on the support frame, the feeding device includes a storage tank for storing dyes, the storage tank is provided with a feeding mechanism, the feeding mechanism includes a feeding pump, one end of the feeding pump is connected to a drawing pipe, and the other end is provided with a delivery pipe, the drawing pipe is connected to the interior of the storage tank, and the delivery pipe is connected to the interior of the dyeing tank.

[0011] As a further configuration of the present invention, a plurality of stirring mechanisms are arranged on the support frame, and the stirring mechanisms include a driving motor, and a stirring paddle extending into the interior of the storage tank is connected to the output end of the driving motor.

[0012] As a further configuration of the present invention, a feeding assembly is arranged between the feeding devices, and the feeding assembly includes a straight feeding pipe, and the straight feeding pipe is provided with a plurality of feeding pipes extending into the interior of the storage tank, and the feeding pipes are provided with valves.

[0013] As a further configuration of the present invention, the water supply system includes a water reservoir, a water pump is provided on the water reservoir, one end of the water pump is connected to a pumping pipe, and the other end is connected to a water supply pipe, the pumping pipe is connected to the interior of the water reservoir, and the water supply pipe is connected to the interior of the dyeing tank.

[0014] As a further configuration of the present invention, the drainage system includes a first wastewater trough and a second wastewater trough, the first wastewater trough is interconnected with the dyeing tank, and the second wastewater trough is interconnected with the sample tank.

[0015] As a further configuration of the present invention, a first vertical pump is arranged between the first wastewater trough and the dyeing tank, one end of the first vertical pump is connected to a first water suction pipe, and the other end is connected to a first drain pipe, the first water suction pipe is connected to the interior of the dyeing tank, and the first drain pipe is connected to the interior of the first wastewater trough, and a second vertical pump is arranged between the second wastewater trough and the sample cylinder, one end of the second vertical pump is connected to a second water suction pipe, and the other end is connected to a second drain pipe, the second water suction pipe is connected to the interior of the sample cylinder, and the second drain pipe is connected to the interior of the second wastewater trough.

[0016] As a further configuration of the present invention, an inclined platform is provided at the bottom of the dyeing tank, and the inclined surface of the inclined platform faces the direction of the first water suction pipe.

[0017] In summary, the present invention has the following beneficial effects: The dyeing process steps of the present invention are simple and orderly, the process continuity is good, the dye solution can be automatically added, the efficiency is high, thereby ensuring the quality of the dye solution and reducing the defective rate. Moreover, by providing a sample cylinder, the sample can be easily taken out for observation, so that countermeasures can be taken in time to ensure the dyeing effect, and the tedious operation of continuous stirring is avoided, so that the operation is more time-saving and labor-saving, and the production efficiency of dyed flannel is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The structure of the dyeing system in the present invention is shown in FIG. Figure 1 ; Figure 2 The structure of the dyeing system in the present invention is shown in FIG. Figure 2 .

[0019] Figure numerals: 1. dyeing tank; 2. sample cylinder; 3. circulation pipe; 4. support frame; 5. storage tank; 6. feeding pump; 7. extraction pipe; 8. delivery pipe; 9. driving motor; 10. feed straight pipe; 11. feeding pipe; 12. valve; 13. water reservoir; 14. water pump; 15. extraction pipe; 16. delivery pipe; 17. first wastewater tank; 18. second wastewater tank; 19. first vertical pump; 20. first water suction pipe; 21. first drainage pipe; 22. second vertical pump; 23. second water suction pipe; 24. second drainage pipe. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. 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.

[0021] See also Figure 1 , Figure 2 As shown, a flannel dyeing process comprises the following steps: 1) Grey fabric preparation: inspect the original fabric, turn it over, sew the ends, check the quality of the grey fabric, and remove defective products; 2) Singeing: Place the blank in the singeing machine so that the blank quickly passes through the high-temperature flame to burn off the fluff on the surface of the blank, making the surface of the blank smooth and preventing uneven dyeing; 3) Desizing: The secondary alkali rolling and stacking process is adopted. The grey cloth treated in step 2) is first passed through the alkali rolling machine, and sodium hydroxide is added as an alkali agent to make the grey cloth evenly alkali-coated. The alkali-rolled fabric is then stacked in a loose state to allow the alkali solution to fully penetrate and act on the grey cloth. The stacked fabric is then passed through the alkali rolling machine again to ensure that the alkali solution is evenly distributed on the surface and inside of the grey cloth. Finally, the grey cloth is rinsed with hot water to remove residual impurities and improve the water absorption of the grey cloth, thereby reducing the consumption of dye solution. 4) Pretreatment: The grey cloth treated in step 3) is first subjected to refining and bleaching treatments in sequence, and then placed in a clip mercerizing machine, where the grey cloth is mercerized with caustic soda solution, thereby increasing the gloss and feel of the grey cloth; 5) raising the nap: placing the blank processed in step 4) on a napping machine, starting the napping machine to raise the nap to make a velvet cloth, and washing the velvet cloth to remove the short nap attached to the surface; 6) Dyeing: First, prepare the dyeing system for debugging, inject clean water into the dyeing tank 1 through the water supply system, inject dye into the dyeing tank 1 through the feeding system, and form a dye solution after mixing, so that the dye solution flows into the sample tank 2 at the same time, and then cut a sample from the flannel made in step 5), immerse the flannel in the dyeing tank 1 for dyeing, and immerse the sample in the sample tank 2 for dye bathing. During the dyeing process, the dyeing condition is judged by observing the dyeing condition of the sample in the sample tank 2. After the dyeing is completed, the dyed flannel is obtained, and the dyeing wastewater is discharged and treated through the drainage system, wherein the dye is composed of the following components in parts by weight: 30-50 parts of disperse dye; 5-10 parts of dispersant; 5-10 parts of organic solvent; 1-3 parts of sodium hydroxide; the balance is deionized water; 7) Soaping: The dyed flannel treated in step 6) is placed in a soap washing machine for cyclic soap washing to remove floating color and impurities; 8) Shaping: The dyed flannel treated in step 7) is dried and shaped, and smoothed to obtain a finished product.

[0022] The present invention adopts a dyeing process flow of grey cloth preparation, singeing, desizing, pretreatment, raising, dyeing, soaping and shaping, and the steps are simple and orderly, and the process continuity is good. In the dyeing step, clean water is injected into the dyeing tank 1 through the water supply system, and dye is injected into the dyeing tank 1 through the feeding system. After mixing, dye liquor is formed, and the dye liquor can be automatically added with high efficiency, thereby ensuring the quality of the dye liquor and reducing the defective rate. By setting a sample cylinder 2, the sample is immersed in the sample cylinder 2 for dye bathing. Since the dye bath environment in the sample cylinder 2 is consistent with that in the dyeing cylinder, during the dyeing process, the dyeing condition in the dyeing tank 1 can be known by observing the dyeing condition of the sample in the sample cylinder 2. Since the sample cylinder 2 is shallow, the sample can be easily taken out for observation, so that countermeasures can be taken in time to ensure the dyeing effect, and the tedious operation of continuous stirring is avoided, so that the operation is more time-saving and labor-saving, and the production efficiency of dyed flannelette is greatly improved.

[0023] See also Figure 1 , Figure 2As shown, the dyeing system includes a dyeing tank 1, a feeding system, a water supply system and a drainage system. A sample cylinder 2 is arranged on the dyeing tank 1. The dyeing tank 1 and the sample cylinder 2 are interconnected through a circulation pipe 3. Before the dyeing step is performed, clean water can be injected into the dyeing tank 1 through the water supply system, and dye can be injected into the dyeing tank 1 through the feeding system. After mixing, a dye solution is formed, so that the dye solution flows into the sample cylinder 2 at the same time. Then, a sample is cut from the flannel cloth, and the flannel cloth is immersed in the dyeing tank 1 for dyeing. At the same time, the sample is immersed in the sample cylinder 2 for dye bathing. During the dyeing process, the dyeing condition is judged by observing the dyeing condition of the sample in the sample cylinder 2. After the dyeing is completed, a dyed flannel cloth is obtained, and then the dyeing wastewater is discharged through the drainage system for treatment. The whole operation is relatively coherent and orderly, the dyeing efficiency is high, and the dyeing quality can be effectively guaranteed.

[0024] See also Figure 1 , Figure 2 As shown, the feeding system includes a support frame 4, on which a plurality of feeding devices are arranged, the feeding devices include a storage tank 5 for storing dyes, a feeding mechanism is arranged on the storage tank 5, the feeding mechanism includes a feeding pump 6, and a suction pipe 7 is connected to one end of the feeding pump 6, and a delivery pipe 8 is arranged at the other end, and the suction pipe 7 is communicated with the inside of the storage tank, and the delivery pipe 8 is communicated with the inside of the dyeing tank 1. When dye needs to be added, the feeding pump 6 can be started to extract the dye inside the storage tank 5 through the suction pipe 7, and then the dye is delivered to the inside of the dyeing tank 1 through the delivery pipe 8. The operation is relatively convenient, automatic feeding is realized, and the efficiency is high. A plurality of stirring mechanisms are arranged on the support frame 4, and the stirring mechanism includes a driving motor 9, and a motor extending into the output end of the driving motor 9 is connected The stirring paddle inside the storage tank 5 can start the driving motor 9 to drive the stirring paddle to rotate during the daily operation of the dyeing system, so that the dye inside the storage tank 5 can be continuously stirred to keep the dye in a flowing state, avoid dye solidification, and ensure smooth transportation of the dye. A feeding assembly is arranged between the feeding devices, and the feeding assembly includes a feeding straight pipe 10. A plurality of feeding pipes 11 extending into the storage tank 5 are arranged on the feeding straight pipe 10, and a valve 12 is arranged on the feeding pipe 11. After the dye inside the storage tank 5 is consumed, the feeding straight pipe 10 can be connected to the external dye reserve, and then the valve 12 is opened to inject the dye through the feeding straight pipe 10, and then input into the storage tank 5 through the feeding pipe 11, thereby realizing convenient replenishment of the dye.

[0025] See also Figure 1 , Figure 2As shown, the water supply system includes a water reservoir 13, on which a water pump 14 is arranged, and a suction pipe 15 is connected to one end of the water pump 14, and a water delivery pipe 16 is connected to the other end. The suction pipe 15 is communicated with the interior of the water reservoir 13, and the water delivery pipe 16 is communicated with the interior of the dyeing tank 1. Clean water can be stored in the water reservoir 13. When clean water needs to be added to the dyeing tank 1, the water pump 14 can be started to draw clean water from the water reservoir 13 through the suction pipe 15, and then input into the dyeing tank 1 through the water delivery pipe 16, which is convenient to operate.

[0026] See also Figure 1 , Figure 2 As shown, the drainage system includes a first wastewater trough 17 and a second wastewater trough 18, and the first wastewater trough 17 is interconnected with the dyeing tank 1, and the second wastewater trough 18 is interconnected with the sample tank 2. After the dyeing is completed, the dyeing wastewater in the dyeing tank 1 can be discharged into the first wastewater trough 17, and the dyeing wastewater in the sample tank 2 can be discharged into the second wastewater trough 18, so that the dyeing wastewater can be centrally treated, ensuring the orderly discharge of the dyeing wastewater. A first vertical pump 19 is arranged between the first wastewater trough 17 and the dyeing tank 1, and a first water suction pipe 20 is connected to one end of the first vertical pump 19, and a first drainage pipe 21 is connected to the other end. The first water suction pipe 20 is connected to the inside of the dyeing tank 1, and the first drainage pipe 21 is connected to the inside of the first wastewater trough 17. A second vertical pump 22 is arranged between the second wastewater trough 18 and the sample tank 2, and A second water suction pipe 23 is connected to one end of the second vertical pump 22, and a second drainage pipe 24 is connected to the other end. The second water suction pipe 23 is connected to the inside of the sample cylinder 2, and the second drainage pipe 24 is connected to the inside of the second wastewater tank 18. When the wastewater is discharged, the first vertical pump 19 and the second vertical pump 22 can be started, and the first water suction pipe 20 can extract the dyeing wastewater in the dyeing tank 1, and input the dyeing wastewater into the first wastewater tank 17 through the first drainage pipe 21, and the second water suction pipe 23 can extract the dyeing wastewater in the sample cylinder 2, and input the dyeing wastewater into the second wastewater tank 18 through the second drainage pipe 24, and the drainage efficiency is high. Among them, an inclined platform is provided at the bottom of the dyeing tank 1, and the inclined surface of the inclined platform faces the direction of the first water suction pipe 20, so that the dyeing wastewater can be inclined toward the first water suction pipe 20, which is convenient for discharge. The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A flannel dyeing process, characterized in that: The steps include: 1) Grey fabric preparation: inspect the original fabric, turn it over, sew the ends, check the quality of the grey fabric, and remove defective products; 2) Singeing: Place the blank in the singeing machine so that the blank quickly passes through the high-temperature flame to burn off the fluff on the surface of the blank; 3) Desizing: The secondary alkali rolling and stacking process is adopted. The grey cloth treated in step 2) is first passed through the alkali rolling machine, and sodium hydroxide is added as an alkali agent to make the grey cloth uniformly alkali-coated. The alkali-rolled fabric is then stacked in a loose state to allow the alkali solution to fully penetrate and act on the grey cloth. The stacked fabric is then passed through the alkali rolling machine again to ensure that the alkali solution is evenly distributed on the surface and inside of the grey cloth. Finally, the grey cloth is rinsed with hot water to remove residual impurities. 4) Pretreatment: first, the grey cloth treated in step 3) is subjected to refining and bleaching treatments in sequence, and then the grey cloth is placed in a clip mercerizing machine and mercerized with a caustic soda solution; 5) raising the nap: placing the blank processed in step 4) on a napping machine, starting the napping machine to raise the nap to make a velvet cloth, and washing the velvet cloth to remove the short nap attached to the surface; 6) Dyeing: First, the dyeing system is debugged and prepared. Clean water is injected into the dyeing tank (1) through the water supply system. Dye is injected into the dyeing tank (1) through the feeding system. After mixing, dye liquor is formed. The dye liquor flows into the sample tank (2) at the same time. Then, a sample is cut from the flannel fabric prepared in step 5). The flannel fabric is immersed in the dyeing tank (1) for dyeing. At the same time, the sample is immersed in the sample tank (2) for dyeing. During the dyeing process, the dyeing condition of the sample in the sample tank (2) is observed to judge the dyeing condition. After the dyeing is completed, the dyed flannel fabric is obtained. Then, the dyeing wastewater is discharged through the drainage system for treatment. 7) Soap washing: the dyed wool treated in step 6) is placed in a soap washing machine for cyclic soap washing to remove floating colors and impurities; 8) Shaping: The dyed flannel treated in step 7) is dried and shaped, and smoothed to obtain a finished product.

2. The dyeing process of flannel according to claim 1, characterized in that: The dye is composed of the following components in parts by weight: Disperse dye 30-50 parts; Dispersant 5-10 parts; 5-10 parts of organic solvent; 1-3 parts of sodium hydroxide; The balance was deionized water.

3. The dyeing process of flannel according to claim 1, characterized in that: The dyeing system comprises a dyeing tank (1), a feeding system, a water supply system and a drainage system. A sample cylinder (2) is arranged on the dyeing tank (1). The dyeing tank (1) and the sample cylinder (2) are connected to each other via a circulation pipe (3).

4. The dyeing process of flannel according to claim 3, characterized in that: The feeding system comprises a support frame (4), the support frame (4) is provided with a plurality of feeding devices, the feeding devices comprise a storage tank (5) for storing dye, the storage tank (5) is provided with a feeding mechanism, the feeding mechanism comprises a feeding pump (6), one end of the feeding pump (6) is connected to a pumping pipe (7), and the other end is provided with a delivery pipe (8), the pumping pipe (7) is communicated with the interior of the drug storage tank, and the delivery pipe (8) is communicated with the interior of the dyeing tank (1).

5. The dyeing process of flannel according to claim 4, characterized in that: The support frame (4) is provided with a plurality of stirring mechanisms, the stirring mechanisms comprising a driving motor (9), and the output end of the driving motor (9) is connected to a stirring paddle extending into the interior of the storage tank (5).

6. The dyeing process of flannel according to claim 4, characterized in that: A feeding assembly is provided between the feeding devices, the feeding assembly comprising a feeding straight pipe (10), the feeding straight pipe (10) being provided with a plurality of feeding pipes (11) extending into the interior of the storage tank (5), the feeding pipes (11) being provided with valves (12).

7. The dyeing process of flannel according to claim 3, characterized in that: The water supply system comprises a water reservoir (13), a water pump (14) being arranged on the water reservoir (13), one end of the water pump (14) being connected to a water pumping pipe (15), and the other end of the water pump (14) being connected to a water delivery pipe (16), the water pumping pipe (15) being connected to the interior of the water reservoir (13), and the water delivery pipe (16) being connected to the interior of the dyeing tank (1).

8. The dyeing process of flannel according to claim 3, characterized in that: The drainage system comprises a first wastewater tank (17) and a second wastewater tank (18), wherein the first wastewater tank (17) is interconnected with the dyeing tank (1), and the second wastewater tank (18) is interconnected with the sample tank (2).

9. The dyeing process of flannel according to claim 8, characterized in that: A first vertical pump (19) is arranged between the first wastewater tank (17) and the dyeing tank (1); one end of the first vertical pump (19) is connected to a first water suction pipe (20), and the other end is connected to a first drainage pipe (21); the first water suction pipe (20) is communicated with the interior of the dyeing tank (1); the first drainage pipe (21) is communicated with the interior of the first wastewater tank (17); a second vertical pump (22) is arranged between the second wastewater tank (18) and the sample cylinder (2); one end of the second vertical pump (22) is connected to a second water suction pipe (23), and the other end is connected to a second drainage pipe (24); the second water suction pipe (23) is communicated with the interior of the sample cylinder (2); and the second drainage pipe (24) is communicated with the interior of the second wastewater tank (18).

10. The dyeing process of flannel according to claim 9, characterized in that: An inclined platform is provided at the bottom of the dyeing tank (1), and the inclined surface of the inclined platform faces the direction of the first water suction pipe (20).

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