A cloud-dyed polyester-nylon sandwich fabric and a manufacturing method thereof

Abstract

The application belongs to the field of textile dyeing and finishing, and particularly relates to a cloud-dyed polyester-polyamide sandwich fabric and a manufacturing method thereof. The manufacturing method comprises the following steps: S1, refining and setting of the sandwich fabric in sequence; S2, dyeing: adding an auxiliary agent into water, then adding the set sandwich fabric after stirring, wetting and stacking the sandwich fabric, spraying acid and a dyeing solution with a temperature of 73-77 DEG C on the stacked fabric, then increasing the temperature to 80-84 DEG C, keeping the temperature for 38-42 min, and then decreasing the temperature to 48-52 DEG C to take out the fabric; S3, post-treatment: adding a post-treatment auxiliary agent into water, putting in the fabric, keeping the temperature at 38-42 DEG C for 18-22 min, and then taking out the fabric; and the cloud-dyed polyester-polyamide sandwich fabric is obtained after setting. The manufacturing method can produce different light and dark effects without binding through a special weaving method and weaving and dyeing process.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of textile dyeing and finishing, and particularly relates to a cloud-dyed polyester-polyamide sandwich fabric and a manufacturing method thereof. BACKGROUND

[0002] Cloud-dyeing is a kind of tie-dyeing, and is named after its effect of looking like white clouds floating in the blue sky. Cloud-dyeing is a traditional hand-dyeing process, in which cloth is randomly rolled and fixed with rubber bands, and then immersed in natural dyes. The finished product has the same artistic effect as Chinese freehand painting, and is free and vigorous. It is an excellent material for making cloth bags, tablecloths, home decorations and patchwork art.

[0003] In a large-scale production in a dyeing factory, products with cloud-dyeing effect need to be bundled and immersed like hand-dyeing, but hand bundling is time-consuming and laborious, and is not conducive to mass production.

[0004] A cloud-dyeing method for cotton-like fancy yarn is disclosed in Chinese patent CN105671835A, which comprises the following steps: A, blank inspection; B, arrangement; C, entering the vat; D, dye liquor preparation; E, primary dyeing: the dye liquor is delivered to the dye vat in the primary dyeing equipment, and the fancy yarn is preliminarily dyed by the dye vat, and the dyeing time is 150-200 minutes; F, dehydration; G, final dyeing: the dye liquor is delivered to the final dyeing equipment, and the cotton-like fancy yarn is finally dyed by the dye gun in the final dyeing equipment, and the dyeing time is 100-120 minutes; H, drying; I, inspection; J, packaging; K, warehousing. After dyeing, the product has the advantage of good three-dimensional effect, like clouds in the sky. However, this method requires the use of special stirring barrels and final dyeing equipment. If it is to be popularized, a large number of new equipment needs to be added or a large number of existing equipment needs to be replaced, which is extremely costly and not suitable for existing dyeing factories. SUMMARY

[0005] In order to overcome the defects of the prior art, the present application solves the technical problem of providing a cloud-dyed polyester-polyamide sandwich fabric and a manufacturing method thereof, which does not require manual bundling and is suitable for existing dyeing equipment.

[0006] In order to solve the above technical problems, the technical scheme adopted by the present application is as follows: a manufacturing method of a cloud-dyed polyester-polyamide sandwich fabric, comprising the following steps:

[0007] S1, refining and blank setting of the sandwich fabric in sequence;

[0008] S2, dyeing: adding an auxiliary agent to water, stirring, then adding the blank-set sandwich fabric, immersing the sandwich fabric, piling up the sandwich fabric, spraying acid and a dye liquor at 73-77℃ onto the piled-up fabric, then raising the temperature to 80-84℃, maintaining the temperature for 38-42 min, and then lowering the temperature to 48-52℃ to take out the fabric.

[0009] S3, post-treatment: adding post-treatment assistants in water, entering cloth, keeping at 38-42℃ for 18-22min, and taking out cloth; and the cloud-dyed polyester and nylon sandwich fabric is obtained after setting.

[0010] The cloud-dyed polyester and nylon sandwich fabric manufacturing method of the present application can simply prepare a large amount of cloud-dyed fabric, and the special weaving method and weaving and dyeing process can produce different light and dark effects without bundling. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 Fig. 1 shows the process flow chart of refining of the embodiment one of the present application;

[0012] Figure 2 Fig. 2 shows the process flow chart of dyeing of the embodiment one of the present application;

[0013] Figure 3 Fig. 3 shows the actual picture of the cloud-dyed polyester and nylon sandwich fabric of the present application. DETAILED DESCRIPTION

[0014] To make the technical content, the achieved purposes and effects of the present application clear, the following will be described in combination with the embodiments and the drawings.

[0015] The most key idea of the present application is that the special weaving method and weaving and dyeing process can produce different light and dark effects without bundling.

[0016] Please refer to Figures 2 to 3 Fig. 3, the cloud-dyed polyester and nylon sandwich fabric manufacturing method of the present application includes the following steps:

[0017] S1, refining and setting of the sandwich fabric;

[0018] S2, dyeing: adding assistants in water, adding the set sandwich fabric after stirring, wetting and stacking the sandwich fabric, spraying acid and 73-77℃ dyeing solution on the stacked fabric, then increasing the temperature to 80-84℃, keeping for 38-42min, and then decreasing to 48-52℃ to take out the cloth;

[0019] S3, post-treatment: adding post-treatment assistants in water, entering cloth, keeping at 38-42℃ for 18-22min, and taking out cloth; and the cloud-dyed polyester and nylon sandwich fabric is obtained after setting.

[0020] From the above description, the beneficial effects of the present application are that the production method of the cloud-dyed polyester-polyamide sandwich fabric can simply prepare a large number of cloud-dyed fabrics, the raw material selection and unique weaving and dyeing process enable the fabric to produce different effects without bundling. Moreover, the traditional cloud-dyeing process can only be used for bundling and dyeing soft fabrics such as cotton and wool, and the improved production method can be used for processing various blended fabrics, and the application range is wider.

[0021] The dyeing method of the present application is different from the conventional polyester-polyamide blended fabric dyeing method. The conventional dyeing method considers how to avoid color mottle and obtain uniform dyeing effect, so the speed during dyeing needs to be sufficient, and the overflow dyeing machine needs to be sprayed uniformly. In order to dye the cloud-dyeing effect, the sandwich fabric is soaked before adding the dye, so that the conditions before cloud-dyeing are consistent, and the internal part of the unsoaked stack is prevented from appearing large area blank; then the dyed fabric sample is stacked, so that uneven patterns are dyed; finally, post-treatment and setting are carried out, the floating color is washed away, and the fabric hand is improved. Compared with the traditional cloud-dyeing, the workload of the dyeing personnel can be reduced, and the energy consumption can be reduced. In order to make the finished fabric not only beautiful but also practical, a post-treatment aid is added during the post-treatment process to give the finished fabric excellent moisture absorption and quick drying functions.

[0022] The conventional dyed fabric is in a circle rope shape in the dyeing vat and circulates back and forth, the present application is to unbundle the fabric head, let the fabric accumulate, the dyeing vat does not operate, and the fabric does not move, so as to realize the accumulation.

[0023] Further, the surface layer of the sandwich fabric is polyester bamboo joint thick and thin yarn, and the middle layer is polyamide yarn.

[0024] Further, the polyester bamboo joint thick and thin yarn is 61% white half-dull 50D / 24F polyester bamboo joint thick and thin yarn FDY (fully drawn yarn), and the polyamide yarn is 39% white half-dull 40D / 12F polyamide filament FDY.

[0025] From the above description, the weaving method of the present application is that the middle layer is white half-dull 40D / 12F polyamide filament, the outer layer is white half-dull 50D / 24F polyester bamboo joint thick and thin yarn, the dye is acid dye for dyeing polyamide, and the dyeing is carried out at a lower temperature. The dye and temperature are only suitable for dyeing polyamide, and the outer polyester fiber is not dyed. After part of the polyamide is dyed, the finished fabric has a dyeing effect that appears and disappears through the two sides of the undyed polyester bamboo joint thick and thin yarn. Due to the dispersed arrangement of the fabric fibers and the use of stack dyeing, obvious blank appears in some places where the content of polyester thick and thin yarn is large or the extrusion is serious, the pattern is clear in light and shade, and the cloud-dyeing product has the mood of Chinese painting.

[0026] And only polyester bamboo joint thick and thin yarn can form a unique cloud-dyeing style with the mood of Chinese painting.

[0027] Please refer toFigure 1 Further, the refining is specifically as follows: when the sandwich fabric has a weight per square meter of >130g, water is added to add refining aids, the temperature is raised to 58-62 DEG C for 18-22 min, then the temperature is lowered to 48-52 DEG C, the fabric is washed once with hot water and then with normal temperature water, and then the fabric is taken out;

[0028] When the sandwich fabric has a weight per square meter of ≤130g, water is added to add refining aids, the temperature is raised to 68-72 DEG C for 18-22 min, then the temperature is lowered to 58-62 DEG C, the fabric is washed once with hot water and then with normal temperature water, and then the fabric is taken out.

[0029] Further, the weight per square meter is the weight of the fabric per square meter, the temperature of the hot water is 40-60 DEG C, and the temperature of the normal temperature water is 15-32 DEG C.

[0030] From the above description, it can be known that the refining has the following effects: the chemical fiber yarn is shrunk to reach the required weight per square meter; and the oil agent of the chemical fiber yarn and the oil stains in the weaving process are removed. The oil stains are difficult to remove after the fabric is fixed, and the fabric is fixed again after the refining to prevent the oil stains from affecting the dyeing effect.

[0031] The fabric with a light weight per square meter needs to be kept at a higher temperature during the refining to increase the shrinkage rate.

[0032] Further, the refining aids are 2-3 g / L of anti-wrinkle agent and 1-2 g / L of oil removing agent.

[0033] Further, the temperature raising rate during the refining is 0.7-0.9 DEG C / min, and the temperature lowering rate is 1.3-1.7 DEG C / min.

[0034] From the above description, it can be known that the low rate of the temperature raising and lowering during the refining is beneficial to ensure that the fabric has a small change with the temperature, uniform expansion and shrinkage, and no wrinkles on the fabric surface.

[0035] Further, during the dyeing, the temperature is raised to 80-84 DEG C at a rate of 0.7-0.9 DEG C / min, the temperature is kept for 38-42 min, and then the temperature is lowered to 48-52 DEG C at a rate of 0.8-1.2 DEG C / min to take out the fabric.

[0036] From the above description, it can be known that the temperature is raised and lowered slowly during the dyeing according to the characteristics of the polyester and the nylon fibers, the wrinkles caused by the too fast shrinkage or expansion of the fibers are avoided, and the dyeing characteristics of the composite dye are combined to ensure the dyeing quality of the finished product.

[0037] The dyeing condition of the conventional nylon is 98 DEG C for 30 min, and the polyester and nylon sandwich fabric is dyed at the temperature and time, which causes the yarn damage and the internal nylon cracking. Therefore, the temperature is lowered and the keeping time is prolonged in the present application, which can ensure the dyeing effect and the quality of the fabric.

[0038] Further, the bath ratio is controlled at 10-13 when dyeing dark color, and the bath ratio is controlled at 16-19 when dyeing medium dark color.

[0039] As can be seen from the above description, when the bath ratio is large, the fabric is fully immersed in the dyeing solution, which causes too much dyeing of the nylon and too little white space; when the bath ratio is small, the fabric is stacked in many places and cannot contact the dyeing solution, which causes large-area white space. The above two cases will not achieve a better cloud dyeing effect.

[0040] Further, the dark color includes black, and the medium dark color includes green and blue. The reference standard for the division of dark color and medium dark color is GB / T 4841.3-2006.

[0041] Further, the preparation method of the dyeing solution is as follows: adding dye in water and heating to 68-72℃ to perform dyeing.

[0042] Another technical scheme of the present application is a cloud dyeing polyester-nylon sandwich fabric prepared by the above preparation method.

[0043] As can be seen from the above description, the cloud dyeing polyester-nylon sandwich fabric of the present application has excellent functions, good color fastness, beautiful and elegant even dyeing effect, comfortable hand feeling, and is suitable for batch production in factories, and is a good choice for decorative home fabrics such as curtains and tablecloths.

[0044] In the embodiments of the present application, all dyeing kiers are Isaca dyeing kiers, and the dyeing machine is an overflow dyeing machine; the setting and setting are performed by using a Morfius setting machine, and the temperature and speed are strictly controlled to ensure that the appearance and internal quality of the finished fabric are not damaged.

[0045] Please refer to Figures 1 to 3 , the first embodiment of the present application is:

[0046] The finished color is racing blue, and the weight of the dyeing cloth is 140kg.

[0047] A manufacturing method of a cloud dyeing polyester-nylon sandwich fabric, comprising the following steps:

[0048] S1, the fabric blank: the fabric blank is a sandwich fabric blank, the surface layer of the sandwich fabric blank is 61% white semi-dull 50D / 24F polyester bamboo joint thick and thin yarn FDY (fully drawn yarn), and the middle layer is 39% white semi-dull 40D / 12F nylon filament FDY;

[0049] The manufacturing equipment is a ZS11 double-sided machine, the needle number / inch opening is 34″32G, the number of paths is 84F, the total warp number is 84, the needle disc is shown in Table 1, and the needle cylinder is shown in Table 2.

[0050] Table 1

[0051] 1 U — V — — — 2 — — — U — V

[0052] Table 2

[0053] 1 — — — U V — 2 U V — — — —

[0054] Wherein, the upper row of needles: 12, the lower row of needles: 12; the hook (2.9 cm / 50) 50G line length 12.2 cm -> 40D / 12F nylon FDY, the upper and lower single edge (6.1 cm / 23) 50G line length 7.6 cm -> 50D / 24F fat and thin yarn FDY.

[0055] S2, refining: the sandwich fabric has a weight of 140g, water is added at a ratio of 1:10 (water to fabric mass ratio), 2g / L bath anti-wrinkle agent HF-309 and 1g / L oil removal agent MFB (specifically F-MFB manufacturer is ARCHROMA (Anguo)) are added, and the machine is operated for 10 min; the temperature is increased to 60℃ at a rate of 0.8℃ / min, and the temperature is maintained for 20 min; then the temperature is decreased to 50℃ at a rate of 1.5℃ / min, the fabric is washed with hot water at 50℃ for 5 min, and then washed with normal temperature water, and the fabric is taken out.

[0056] S3, fabric setting: the speed is 180℃×26m / min, the upper and lower overfeed is +23% / -1%, and the upper and lower air force is 80.

[0057] S4, dyeing: the auxiliaries used for dyeing are 1g / L polyester hydrophilic softener RH-NB-6911, 3g / L bath anti-wrinkle agent HF-309 (produced by Putian Dakai New Material Co., Ltd.) and 0.5g / L defoaming agent JD-Q127, the acid used is 0.6g / L glacial acetic acid, the dyes are 0.016%owf acid red B100% and 0.145%owf sardine blue BN (produced by Jinhua Shuanghong Chemical Co., Ltd.), and the bath ratio is 17.

[0058] S41: water is added, the auxiliaries are added into the auxiliary cylinder, the auxiliaries are punched into the cylinder after stirring, the machine is operated, and the main pump is opened to 21HZ;

[0059] S42: the sandwich fabric after fabric setting is weighed and evenly distributed, the head and tail are connected to the guide cloth, the guide cloth head is taken out with a hook after the cloth is put in, the cloth in the cylinder is evenly run for one circle, the water level is controlled at 2400L, and then the guide cloth is checked out to make the fabric accumulate;

[0060] S43: the main pump is adjusted to 19HZ, and the temperature is increased to 75℃ at a rate of 1℃ / min;

[0061] S44: the water in the cylinder is heated to 70℃, the dye is added to prepare the dye liquor, the water level is about 3 / 4, the dye liquor is obtained, the temperature is increased to 75℃, the dye liquor and the acid are used to spray in the dye cylinder for circulation;

[0062] S45: The liquid in the dye vat is raised to 82°C at a rate of 0.8°C / min, and kept for 40 min, the water level is controlled at 4300 L, and then is lowered to 50°C at a rate of 1°C / min, the liquid is drained, and the cloth is taken out.

[0063] S5, post-treatment: after draining the liquid, the vat is washed with hot water at 50°C, and then the cloth is put in again, the head and tail are bound, the main pump is turned on to 30HZ, and the cloth is lifted at a speed of 240; then the cloth is washed with hot water again, then 1% owf of polyester hydrophilic softener RH-NB-6911 and 0.8% of citric acid are added, and the temperature is kept at 40°C for 20 min without draining the liquid and taking out the cloth.

[0064] S6, setting: the speed is 160°C x 22 m / min, the overfeed is +10% / -2%, and the upwind and downwind power is 80; the setting is carried out by adding 3 g / L of yellowing inhibitor AY-AC for nylon fibers and 0.4% ow of citric acid to obtain a cloud-dyed polyester and nylon sandwich fabric.

[0065] Embodiment two of the application is:

[0066] The finished product color is green, and the weight of the cloth put in for dyeing is 40 kg.

[0067] A method for making a cloud-dyed polyester and nylon sandwich fabric, comprising the following steps:

[0068] S1, fabric embryo: the same as embodiment one.

[0069] S2, refining: the sandwich fabric embryo has a weight of 130 g, water is added at a ratio of 1:10 (water to fabric mass ratio), 2 g / L of bath anti-wrinkle agent HF-309 and 1.5 g / L of oil removal agent MFB are added, the temperature is raised to 70°C at a rate of 0.7°C / min and kept for 18 min, then the temperature is lowered to 62°C at a rate of 1.3°C / min, the fabric is washed with hot water at 40°C for 5 min and then with normal temperature water, and then the fabric is taken out.

[0070] S3, fabric setting: the same as embodiment one.

[0071] S4, dyeing: the auxiliaries used for dyeing are 1 g / L of polyester hydrophilic softener RH-NB-6911, 3 g / L of bath anti-wrinkle agent HF-309, and 0.5 g / L of defoaming agent JD-Q127, the acid used is 1 g / L of glacial acetic acid, the dyes are 0.039% owf of acid 10GFF fluorescent yellow 200% and 0.056% owf of acid turquoise N-5G 120% (produced by Zhangjiagang Changwo Chemical Co., Ltd.), and the bath ratio is 15.8.

[0072] S41: water is added, the auxiliaries are added into the auxiliary vat, the auxiliaries are stirred and then added into the vat, the machine is run, and the main pump is turned on to 21HZ;

[0073] S42: After the sandwiched fabric is weighed and evenly distributed, the head and tail are connected to the guide cloth, the guide cloth head is taken out with a hook after entering the cloth, the cloth in the vat is evenly run for a circle, the water level is controlled at 800L, and then the guide cloth is detected to make the fabric accumulate;

[0074] S43: The main pump is adjusted to 19HZ, and 1℃ per minute is increased to 75℃;

[0075] S44: The water in the vat is heated to 68℃, the dye is added to the material, the water level is about 3 / 4, the dye liquor is obtained, and then the dye liquor and acid are used together to spray in the dye vat for circulation when the temperature is increased to 77℃;

[0076] S45: After the dye liquor is sprayed, the temperature is increased to 80℃ at 0.7℃ / min, the water level is controlled at 4300L, and then the temperature is decreased to 52℃ at 0.8℃ / min, and the liquid is discharged.

[0077] S5, post-treatment: After discharging the liquid, hot water at 40℃ is used to wash the vat, then the cloth is re-entered, the head and tail are bound, the main pump is opened to 30HZ, and the cloth is lifted by 240; then wash with hot water again, then add 0.5% owf of polyester hydrophilic softener RH-NB-6911 and 0.8% of citric acid, and keep the temperature at 38℃ for 22min without discharging the liquid.

[0078] S6, setting: same as example one.

[0079] Example three of the application is:

[0080] The finished product color is black, and the dyeing cloth weight is 140kg.

[0081] A cloud dyeing polyester and nylon sandwich fabric production method, comprising the following steps:

[0082] S1, fabric embryo: same as example one.

[0083] S2, refining: the sandwich fabric has a weight of 140g, the water is 1:10 (water to fabric mass ratio), 2g / L bath anti-wrinkle agent HF-309 and 1g / L oil removal agent MFB are added after the water is added, the temperature is increased to 60℃ at 0.9℃ / min, the temperature is kept for 22min, then the temperature is decreased to 58℃ at 1.7℃ / min, the fabric is washed with hot water at 60℃ for 5min, then washed with normal temperature water, and then the fabric is discharged.

[0084] S3, fabric setting: same as example one.

[0085] S4. Dyeing: The dyeing auxiliaries are 1 g / L polyester hydrophilic softener RH-NB-6911, 3 g / L in-bath anti-wrinkle agent HF-309, and 0.5 g / L defoamer JD-Q127. The acid used is 1 g / L glacial acetic acid. The dyes are 0.035% owf Acid Yellow MF, 0.0105% owf Acid Red MF, and 0.455% owf Acid Black BH BS 140% (produced by Jiangsu Dewang Digital Technology Co., Ltd.). The liquor ratio is 11.25.

[0086] S41: Add water, add additives to the auxiliary cylinder, stir and then pump the additives into the cylinder, run the machine, and turn the main pump to 21HZ;

[0087] S42: After the sandwich fabric is evenly weighed and sorted after preformation, guide cloths are attached to the ends of the fabric and the fabric is inserted. After the fabric is inserted, the guide cloth head is removed with a hook so that the fabric in the tank runs evenly around once. The water level is controlled at 2400L. Then the guide cloth is removed to make the fabric pile up.

[0088] S43: Main pump frequency reduced to 19Hz, temperature rises to 75℃ per minute at a rate of 1℃;

[0089] S44: Heat the water in the material tank to 72°C, add the dye to process the material, and fill the water to about 3 / 4 to obtain the dye solution. Then heat the water to 73°C and spray the dye solution and acid together into the dye tank using a nozzle for circulation.

[0090] S45: After spraying the dye solution, raise the temperature to 80℃ at 0.9℃ / min, keep it at 42min, control the water level at 4300L, then lower the temperature to 78℃ at 1.2℃ / min and discharge the fabric with the liquid, and then drain the liquid.

[0091] S5. Post-treatment: After draining, wash the tank with 60℃ hot water, then reinsert the fabric, tie the ends securely, and run the main pump for 30 hours. Z 240 rollers; wash again with hot water, then add 0.5% owf polyester hydrophilic softener RH-NB-6911 and 0.8% citric acid, keep warm at 42℃ for 18 minutes, and do not drain the fabric.

[0092] S6. Result: Same as Example 1.

[0093] The cloud-dyed polyester-nylon sandwich fabric prepared in Example 1 was tested;

[0094] 1.1 Wash fastness: Based on the modified standard ISO 105C06 B1M-2010, multiple tests were conducted. The specific test method was as follows: 45 mechanical washes were performed at 50°C with 0.4% IEC reference detergent, including 50 steel balls. The test results are shown in Table 3.

[0095] Table 3

[0096]

[0097] 1.2, Color fastness to fabric dye migration: Nike Method-nal TM 2100, 90°C for 24 hours, test for staining on white fabric was 4.5.

[0098] 1.3, Color fastness to perspiration: reference ISO 105E04-2013, results are shown in Table 4.

[0099] Table 4

[0100]

[0101] 1.4, Vertical wicking 5 minutes: two batches of cloud dyed polyester-polyamide sandwich fabric were prepared using the manufacturing method of Example One, and were named Sample One and Sample Two, respectively; Sample One and Sample Two were tested using Nike test method, and the test results are shown in Table 5.

[0102] Table 5

[0103]

[0104]

[0105] Note: wash conditions were Nike Method, Miele machine wash, 60°C + / - 3°C, cotton 1000 RPM + / - 50 RPM, washed in 1.0 + / - 0.1 g / L IEC detergent solution, no cleaner in the last cycle, then dried.

[0106] 1.5, Pilling resistance: reference standard ASTM D3512 / D3512M-16, using random tumblers, test results are shown in Table 6.

[0107] Table 6

[0108] Test over 30 minutes (pilling rating) Front side Back side Nominal temperature 45°C 4.0 4.0 Critical angle rating 4.0 4.0 Pilling 4.0→4.5 4.0→4.5

[0109] Note: observation options - 45°C platform light box with D6500 light source # = critical angle at 45°C

[0110] 1.6, Dry time test: Nike test method NAL.TM.5120 was used, and the test results are shown in Table 7.

[0111] Table 7

[0112] Upon receipt After 25 washes Average drying time 5.08 minutes 5.58 minutes Standard deviation 0.01 0.30

[0113] Note: wash conditions: Nike Method, Miele machine wash, 60°C + / - 3°C, cotton 1000RPM + / - 50RPM, washed in 1.0 + / - 0.1 g / L IEC detergent solution, no final cycle of cleaner, then dried.

[0114] In summary, the cloud dyeing polyester sandwich fabric production method provided by the application can simply prepare a large number of cloud-dyed fabrics, the raw material selection and unique weaving and dyeing process enable the fabric to produce different light and dark effects without bundling, the color fastness is excellent, and the fabric also has the functions of moisture absorption and quick drying; the improved production method can process various blended fabrics, and the application range is more extensive.

[0115] In order to dye the cloud dyeing effect, the sandwich fabric is first soaked before adding the dye, so that the conditions before cloud dyeing are consistent, and the internal part of the unsoaked stacking part is prevented from appearing large-area blanking; then the dyed cloth sample is stacked, so that uneven patterns are dyed; finally, post-treatment and setting are performed, the floating color is washed away, and the fabric hand is improved. Compared with the traditional bundling cloud dyeing, the workload of the dyeing personnel can be reduced, and the energy consumption can be reduced. In order to make the finished fabric not only beautiful but also practical, a post-treatment aid, polyester hydrophilic softener RH-NB-6911, is added in the post-treatment process, which endows the finished fabric with excellent moisture absorption and quick drying functions and soft touch.

[0116] The above is only an embodiment of the application, and does not limit the patent range of the application, and any equivalent transformation or direct or indirect application in the related technical field by using the content of the specification and drawings of the application is also included in the patent protection range of the application.

Claims

1. A method for producing a cloud-dyed polyester-nylon sandwich fabric, characterized in that, Includes the following steps: S1. The sandwich fabric is refined and fixed in sequence; the outer layer of the sandwich fabric is polyester slub yarn and the middle layer is nylon yarn. S2. Dyeing: Add auxiliaries to water, stir, and then add the sandwich fabric after pre-setting. Soak the sandwich fabric and pile it up. Spray acid and dye liquor at 73~77℃ onto the piled fabric. Then raise the temperature to 80~84℃, keep it at that temperature for 38~42 minutes, and then lower it to 48~52℃ to remove the fabric. The dye in the dye liquor is an acidic material for dyeing nylon. S3. Post-treatment: Add post-treatment auxiliaries to water, put the fabric in, keep it at 38~42℃ for 18~22 minutes, and take out the fabric; after setting, you will get the cloud-dyed polyester-nylon sandwich fabric.

2. The method for producing the cloud-dyed polyester-nylon sandwich fabric according to claim 1, characterized in that, The refining process specifically involves: when the weight of the sandwich fabric is greater than 130g, adding refining agents to the water, heating to 58-62℃ and holding for 18-22 minutes, then cooling to 48-52℃, washing once with hot water and then washing with room temperature water before removing the fabric. When the weight of the sandwich fabric is ≤130g, add refining agent to the water, heat to 68~72℃ and keep warm for 18~22min, then cool down to 58~62℃, wash once with hot water and then wash with room temperature water before the fabric is removed.

3. The method for producing the cloud-dyed polyester-nylon sandwich fabric according to claim 2, characterized in that, The refining aids are 2-3 g / L of anti-wrinkle agent and 1-2 g / L of degreasing agent.

4. The method for producing the cloud-dyed polyester-nylon sandwich fabric according to claim 2, characterized in that, The heating rate during the refining process is 0.7~0.9℃ / min, and the cooling rate is 1.3~1.7℃ / min.

5. The method for producing the cloud-dyed polyester-nylon sandwich fabric according to claim 1, characterized in that, When dyeing dark colors, the liquor ratio of S3 is controlled at 10-13; when dyeing medium-dark colors, the liquor ratio is controlled at 16-19.

6. The method for producing the cloud-dyed polyester-nylon sandwich fabric according to claim 5, characterized in that, The dark colors include black, and the medium dark colors include green and blue.

7. The method for producing the cloud-dyed polyester-nylon sandwich fabric according to claim 1, characterized in that, The dye solution is prepared by adding dye to water and heating to 68-72°C for chemical treatment.

8. The method for producing the cloud-dyed polyester-nylon sandwich fabric according to claim 1, characterized in that, A yellowing prevention agent for nylon fibers is added during the manufacturing process.

9. A cloud-dyed polyester-nylon sandwich fabric prepared by the manufacturing method according to any one of claims 1-8.

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