Method for shortening dyeing and finishing process flow of polyester-cotton four-way stretch resin fabric

Abstract

The invention belongs to the technical field of textile printing and dyeing, and particularly relates to a method for shortening a dyeing and finishing process flow of a polyester-cotton four-way stretch resin fabric. The method for shortening the dyeing and finishing process flow of the polyester-cotton four-way stretch resin fabric comprises the following steps of singeing, desizing and boiling, bleaching, preshrinking, printing, baking, non-ironing baking one-bath, preshrinking and obtaining of a finished fabric. The fabric is woven by adopting core-spun yarns as raw materials, wherein the core-spun yarns are formed by spinning blended yarns CVC of long stapled cotton fibers and polyester fibers and spandex stretch yarns; the use amount of the long stapled cotton fiber is 60-64%, the use amount of the polyester fiber is 25-27%, the use amount of the spandex stretch yarn is 9-15%, the yarn material has a cool feeling, and then resin is overlaid for finishing, so that lasting flatness can be realized; by adopting the steamed spandex stretch yarn and combining with resin finishing, the warp-wise elasticity can reach 10% or above, the weft-wise elasticity can reach 15% or above, and the flatness is improved to 3.5 level.

Description

Technical Field

[0001] The invention belongs to the technical field of textile printing and dyeing, and particularly relates to a method for shortening the dyeing and finishing process of a polyester-cotton four-sided stretch resin fabric. Background Art

[0002] Four-way stretch fabric is a kind of fabric with good elasticity. Its characteristic is that it has elasticity in both upward and downward stretching and left and right stretching. It can adapt to the movement of the human body, stretch and shrink with it, and is light and comfortable. It can also maintain the beautiful appearance of the clothing, and the knees, elbows and other parts of the clothing will not be deformed and bulged due to long-term wearing.

[0003] Polyester four-way stretch fabric has low raw material cost and is therefore inexpensive. It has a wide variety of specifications and stable quality, and is the best-selling product in the market.

[0004] Printing is a technology that transfers patterns, colors, etc. onto textiles through printing methods. With the changes in fashion and the increasing demand for personalization among consumers, printed fabrics with colorful patterns are becoming increasingly important in the textile industry.

[0005] At present, the combination of the three and the addition of resin finishing effects can show high-quality fabrics with classic appearance, skin-friendly, easy-to-care, elastic and comfortable. However, due to the long processing process and unstable quality, the advantages are completely lost. Therefore, it is necessary to shorten the processing process to achieve savings and efficiency.

[0006] Patent CN113774684A discloses a method for preparing a polyester-cotton blended weft double-wrapped stretch fabric, which includes the following steps: combined descaling, bleaching and shaping → mercerizing → dyeing → finishing → finished product. The fabric of the invention is dyed and finished, and on the basis of the original excellent elasticity of the fabric, it has additional wrinkle-resistant, waterproof and oil-resistant functions, has high strength and a sporty and stylish upright feeling, and has good effects in strength, anti-pilling, shrinkage, waterproof, oil-resistant and wrinkle-resistant. However, this process requires mercerizing before processing, and the price of alkali treatment is high, and the process has a great influence on the feel of the fabric.

[0007] Patent CN108728986A discloses a method for preparing a cotton-polyester blended and interwoven four-way stretch fabric and its long-machine dyeing, which includes the following steps: singeing → cold stacking → bleaching → mercerizing → primary preshrinking → dispersion priming → high temperature setting and color development → reduction cleaning → cotton coating → setting → secondary preshrinking → finished product. The fabric of the invention is dyed and finished, and on the basis of the original excellent elasticity of the fabric, the excellent flatness effect of the fabric after washing is added. However, the process flow of this process is long and complicated, and the dyeing and finishing production cost is high and the efficiency is low. Summary of the invention

[0008] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a method for shortening the dyeing and finishing process of polyester-cotton four-way stretch resin fabric. The design is scientific and reasonable, the process flow is short, and the prepared fabric has excellent elasticity and flatness performance, and also has the function of beautiful appearance.

[0009] The early fabric finishing process is: singeing → deboiling → bleaching → pre-shrinking → liquid ammonia → shaping → pre-stretching → pre-shrinking → printing → baking → washing with clean water → no ironing → pre-shrinking → baking → washing → stretching after washing → pre-shrinking.

[0010] The method for shortening the dyeing and finishing process of a polyester-cotton four-way stretch resin fabric of the present invention comprises the following steps:

[0011] Singeing → deboiling → bleaching → pre-shrinking → printing → baking → iron-free baking in one bath → pre-shrinking → finished fabric;

[0012] The fabric is woven with core-spun yarn made of long-staple cotton fiber, polyester fiber blended yarn CVC and spandex stretch silk;

[0013] The blended yarn CVC of long-staple cotton fiber and polyester fiber is a carded ring-spun yarn;

[0014] The usage of the long-staple cotton fiber is 60-64%, the usage of the polyester fiber is 25%-27%, and the usage of the spandex stretch yarn is 9-15%.

[0015] The fineness of the CVC is 40 to 50 pieces.

[0016] The warp density of the finished fabric is 120-130 strands / inch, and the weft density is 80-90 strands / inch.

[0017] During the spinning process of the core-spun yarn, the spandex yarn fineness is 40D, the pre-draft multiple is 3.5-4 times, at this time the elasticity of the stretch fabric can be controlled between 25-35%, the front roller speed is between 180 and 190 r / min to ensure the strength of the outer fiber, the twist setting temperature is 120-125°C, the time is 18-25 minutes, and the elasticity is controlled by two vacuum shaping processes to improve the stability of the yarn, and the yarn is not easily deformed and wrinkled during dyeing and finishing, so the mercerizing, shaping, and liquid ammonia processes are shortened and the product processing flow is reduced.

[0018] The singeing process is as follows: vehicle speed 120 m / min, double-sided cutting and burning, flame intensity 14 Mbar.

[0019] The deboiling process is as follows: NaOH: 15-20 g / L, refining agent SA-U: 2-4 g / L, penetrant WA-M: 4-6 g / L, chelating agent SQ-A: 3-5 g / L, steamer 100°C, stacking 15 min, water washing tank temperature: 1-3# 95°C, 4# 40°C, 5-7# 95°C, 8# 90°C±5, vehicle speed: 50-60 m / min, liquid carrying rate: 70-85%.

[0020] The bleaching process is as follows: NaOH: 1-2.5 g / L, hydrogen peroxide 27.5 wt. %: 7-10 g / L, stabilizer OUR-266: 4-6 g / L, penetrant WA-M: 3-5 g / L, chelating agent SQ-A: 4-6 g / L, steamer at 100° C., stacking for 15-25 min, water washing tank temperature: 1-3# 95° C., 4# 40° C., 5-7# 95° C., 8# 90° C.±5, vehicle speed: 50-60 m / min, liquid carrying rate: 70-85%.

[0021] The pre-shrinking process is as follows: vehicle speed 30-40m / min, spray wet opening 15%, rubber blanket temperature 110-130℃, wool blanket temperature 70-90℃, rolling distance 6-12mm, radial shrinkage of the lower fabric is controlled between 0 and -2% to ensure the size of the printed pattern.

[0022] The process of the one-bath step of wrinkle-free baking is as follows: the cloth pressing wheel speed is 2-7%, the cloth pressing wheel presses the cloth edge by 0.6-1.2 cm (increasing the effective width of the fabric), the width is expanded to the upper limit of the width of the finished product + 6-7 inches, the screw is set at -20 / -10 / -5 / 0 / 0 / 0 / 0 / 0 / 0 / -1 cm, ensuring that the width and shrinkage meet the standards, the temperature is 130-150°C, the upper air volume is 70%, the lower air volume is 60%, the exhaust volume is 60%, the drying room processing time is 30-60s, and the working fluid composition is: penetrant 2-3g / L, resin 90-160g / L, fiber protector 20-30g / L, softener 5-40g / L, resin synergist 10-20g / L, catalyst 14-24g / L, and the balance is water.

[0023] The process of the pre-shrinking step is as follows: the cloth is fed in a loose state, the cloth dropping tension roller is lifted upward, and the downward tension is reduced within 1 kg.

[0024] The present invention improves the feel and elasticity of fabrics by using cotton-polyester stretch silk blended yarns; and develops a method for shortening the mercerizing, liquid ammonia process, and the one-bath no-ironing and baking process, thereby ensuring the flatness of the fabric and shortening the process; in the one-bath no-ironing and baking equipment, the resin and catalyst additives are organically combined with the impregnation and baking, and finally a short-process polyester-cotton four-way stretch resin fabric dyeing and finishing process is realized, which can be used for multi-dimensional wear scenarios such as leisure business, commuting, and vacation.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] (1) The fabric dyeing and finishing process of the present invention is shortened, cost is saved, and quality problems are reduced.

[0027] (2) The long-staple cotton fiber and polyester fiber blended yarn CVC is a combed ring-spun yarn. Compared with combed yarn, untreated ordinary yarn has a loose structure and more plush, which is reflected in the fluffy and soft feel of the fabric. While reducing costs, the feel is improved, achieving multiple goals at one stroke.

[0028] (3) The amount of polyester fiber used in the fabric of the present invention is 25%-27%, and the yarn material has a cool feeling, and after being superimposed with resin finishing, it can achieve long-lasting flatness.

[0029] (4) The present invention optimizes the organization specifications, the warp and weft yarns are polyester-cotton blended 40-50 counts, the core-spun yarn is steamed spandex yarn 40D, the warp density is 120-130 strands / inch, the weft density is 80-90 strands / inch, and the organization is arbitrary. The steamed spandex stretch yarn is used, combined with resin finishing, to achieve a warp elasticity of more than 10%, a weft elasticity of more than 15%, and the flatness is improved to level 3.5. DETAILED DESCRIPTION

[0030] The present invention will be further described below with reference to the embodiments.

[0031] Unless otherwise specified, all raw materials used in the examples are commercially available.

[0032] The chelating agent selected was SQ-A from Lurui Fine Chemical Co., Ltd.;

[0033] The penetrant is WA-M from Lurui Fine Chemical Co., Ltd.;

[0034] The refining agent selected was SA-U from Lurui Fine Chemical Co., Ltd.;

[0035] The stabilizer is OUR-266 from Nantong Aoer Industry and Trade Co., Ltd.

[0036] The resin selected is EFR-3 from Shenzhen Advanced Hualian Co., Ltd.;

[0037] The fiber protective agent selected is SF-P from Lurui Chemical Co., Ltd.;

[0038] For softener, choose EPS from Goldman Sachs Chemical Co., Ltd.;

[0039] The resin synergist is Mnn-7 from Qingdao Onosi Co., Ltd.;

[0040] The catalyst selected was 531 from Shenzhen Advanced Hualian Co., Ltd.

[0041] Example 1

[0042] Finished fabric specifications: CVC45 (FFT40D) * CVC45 (FFT40D) * 130 * 80 * 53 / 54, organization: 2 / 1Z;

[0043] The method for shortening the dyeing and finishing process of the polyester-cotton four-way stretch resin fabric comprises the following steps:

[0044] Singeing → deboiling → bleaching → pre-shrinking → printing → baking → iron-free baking in one bath → pre-shrinking → finished fabric;

[0045] The fabric is woven with core-spun yarn made of long-staple cotton fiber, polyester fiber blended yarn CVC and spandex stretch silk;

[0046] The blended yarn CVC of long-staple cotton fiber and polyester fiber is a carded ring-spun yarn;

[0047] The usage of the long-staple cotton fiber is 64%, the usage of the polyester fiber is 27%, and the usage of the spandex stretch yarn is 9%.

[0048] The fineness of the CVC is 45 count.

[0049] The warp density of the finished fabric is 130 strands / inch, and the weft density is 80 strands / inch.

[0050] During the spinning process of the core-spun yarn, the spandex yarn fineness is 40D and the pre-draft multiple is 3.5 times. At this time, the elasticity of the stretch fabric can be controlled at 27%, the front roller speed is between 185r / min to ensure the strength of the outer fiber, the twist setting temperature is 120°C, the time is 20min, and the two vacuum shapings control its elasticity, improve the stability of the yarn, and it is not easy to deform and wrinkle during dyeing and finishing, so the mercerizing, shaping, and liquid ammonia processes are shortened and the product processing flow is reduced.

[0051] The singeing process is as follows: vehicle speed 120 m / min, double-sided cutting and burning, flame intensity 14 Mbar.

[0052] The deboiling process is as follows: NaOH: 20 g / L, refining agent SA-U: 4 g / L, penetrant WA-M: 6 g / L, chelating agent SQ-A: 5 g / L, steamer 100°C, stacking 15 min, water washing tank temperature: 1-3# 95°C, 4# 40°C, 5-7# 95°C, 8# 90°C±5, vehicle speed: 50 m / min, liquid carrying rate: 80%.

[0053] The bleaching process is as follows: NaOH: 1.5 g / L, hydrogen peroxide 27.5 wt. %: 7 g / L, stabilizer OUR-266: 4 g / L, penetrant WA-M: 4 g / L, chelating agent SQ-A: 5 g / L, steamer 100° C., stacking 15 min, water washing tank temperature: 1-3# 95° C., 4# 40° C., 5-7# 95° C., 8# 90° C.±5, vehicle speed: 60 m / min, liquid carrying rate: 80%.

[0054] The pre-shrinking process is as follows: vehicle speed 40m / min, spray wet opening 15%, rubber blanket temperature 120°C, wool blanket temperature 80°C, rolling distance 8mm, radial shrinkage of lower cloth -1.5%, ensuring the size of the printed pattern, feeding the cloth in a loose state, lifting the cloth tension roller upward, and reducing the downward tension by 1kg.

[0055] The process of the one-bath step of wrinkle-free baking is as follows: the cloth pressing wheel speed is 5%, the cloth pressing wheel presses the cloth edge by 0.8 cm (increasing the effective width of the fabric), the width is expanded to the upper limit of the finished product width + 6 inches, the screw is set at -20 / -10 / -5 / 0 / 0 / 0 / 0 / 0 / 0 / -1 cm, ensuring that the width and shrinkage meet the standards, the temperature is 130°C, the upper air volume is 70%, the lower air volume is 60%, the exhaust volume is 60%, the drying room processing time is 40s, and the working fluid composition is: penetrant 2g / L, resin 130g / L, fiber protector 20g / L, softener 30g / L, resin synergist 20g / L, catalyst 20g / L, and the balance is water.

[0056] Example 2

[0057] Finished fabric specifications: CVC40 (FFT40D) * CVC40 (FFT40D) * 130 * 90 * 53 / 54, structure: 2 / 2Z;

[0058] The method for shortening the dyeing and finishing process of the polyester-cotton four-way stretch resin fabric comprises the following steps:

[0059] Singeing → deboiling → bleaching → pre-shrinking → printing → baking → iron-free baking in one bath → pre-shrinking → finished fabric;

[0060] The fabric is woven with core-spun yarn made of long-staple cotton fiber, polyester fiber blended yarn CVC and spandex stretch silk;

[0061] The blended yarn CVC of long-staple cotton fiber and polyester fiber is a carded ring-spun yarn;

[0062] The usage of the long-staple cotton fiber is 64%, the usage of the polyester fiber is 27%, and the usage of the spandex stretch yarn is 9%.

[0063] The fineness of the CVC is 40 counts.

[0064] The warp density of the finished fabric is 130 strands / inch, and the weft density is 90 strands / inch.

[0065] During the spinning process of the core-spun yarn, the spandex yarn fineness is 40D and the pre-draft multiple is 4 times. At this time, the elasticity of the stretch fabric can be controlled at 25%, the front roller speed is between 190r / min to ensure the strength of the outer fiber, the twist setting temperature is 120°C, the time is 20min, and the elasticity is controlled twice by vacuum setting, which improves the stability of the yarn. It is not easy to deform and wrinkle during dyeing and finishing, so the mercerizing, setting, and liquid ammonia processes are shortened and the product processing flow is reduced.

[0066] The singeing process is as follows: vehicle speed 120 m / min, double-sided cutting and burning, flame intensity 14 Mbar.

[0067] The deboiling process is as follows: NaOH: 15 g / L, refining agent SA-U: 3 g / L, penetrant WA-M: 5 g / L, chelating agent SQ-A: 4 g / L, steamer 100°C, stacking 15 min, water washing tank temperature: 1-3# 95°C, 4# 40°C, 5-7# 95°C, 8# 90°C±5, vehicle speed: 50 m / min, liquid carrying rate: 80%.

[0068] The bleaching process is as follows: NaOH: 1.5 g / L, hydrogen peroxide 27.5 wt. %: 10 g / L, stabilizer OUR-266: 6 g / L, penetrant WA-M: 5 g / L, chelating agent SQ-A: 6 g / L, steamer 100° C., stacking 25 min, water washing tank temperature: 1-3# 95° C., 4# 40° C., 5-7# 95° C., 8# 90° C.±5, vehicle speed: 60 m / min, liquid carrying rate: 80%.

[0069] The pre-shrinking process is as follows: vehicle speed 35m / min, spray wet opening 15%, rubber blanket temperature 115°C, felt blanket temperature 80°C, rolling distance 8mm, radial shrinkage of lower fabric -2%, ensuring the size of the printed pattern, feeding the fabric in a loose state, lifting the tension roller of the fabric upward, and reducing the downward tension by 1kg.

[0070] The process of the one-bath step of wrinkle-free baking is as follows: the cloth pressing wheel speed is 5%, the cloth pressing wheel presses the cloth edge by 1 cm (increasing the effective width of the fabric), the width is expanded to the upper limit of the finished product width + 6 inches, the screw is set at -20 / -10 / -5 / 0 / 0 / 0 / 0 / 0 / 0 / -1cm, ensuring that the width and shrinkage meet the standards, the temperature is 140°C, the upper air volume is 70%, the lower air volume is 60%, the exhaust volume is 60%, the drying room processing time is 40s, and the working liquid composition is: penetrant 2g / L, resin 150g / L, fiber protector 30g / L, softener 40g / L, resin synergist 20g / L, catalyst 23g / L, and the balance is water.

[0071] Example 3

[0072] Finished fabric specifications: CVC50 (FFT40D) * CVC45 (FFT40D) * 130 * 90 * 53 / 54, structure: 5-piece 3-fly surface satin;

[0073] The method for shortening the dyeing and finishing process of the polyester-cotton four-way stretch resin fabric comprises the following steps:

[0074] Singeing → deboiling → bleaching → pre-shrinking → printing → baking → iron-free baking in one bath → pre-shrinking → finished fabric;

[0075] The fabric is woven with core-spun yarn made of long-staple cotton fiber, polyester fiber blended yarn CVC and spandex stretch silk;

[0076] The blended yarn CVC of long-staple cotton fiber and polyester fiber is a carded ring-spun yarn;

[0077] The usage of the long-staple cotton fiber is 64%, the usage of the polyester fiber is 27%, and the usage of the spandex stretch yarn is 9%.

[0078] The fineness of the warp yarn CVC is 50 counts, and the fineness of the weft yarn CVC is 45 counts.

[0079] The warp density of the finished fabric is 130 strands / inch, and the weft density is 90 strands / inch.

[0080] During the spinning process of the core-spun yarn, the spandex yarn fineness is 40D and the pre-draft multiple is 4 times. At this time, the elasticity of the stretch fabric can be controlled at 25%, the front roller speed is between 190r / min to ensure the strength of the outer fiber, the twist setting temperature is 120°C, the time is 20min, and the elasticity is controlled twice by vacuum setting, which improves the stability of the yarn. It is not easy to deform and wrinkle during dyeing and finishing, so the mercerizing, setting, and liquid ammonia processes are shortened and the product processing flow is reduced.

[0081] The singeing process is as follows: vehicle speed 120 m / min, double-sided cutting and burning, flame intensity 14 Mbar.

[0082] The deboiling process is as follows: NaOH: 15 g / L, refining agent SA-U: 3 g / L, penetrant WA-M: 5 g / L, chelating agent SQ-A: 4 g / L, steamer 100°C, stacking 15 min, water washing tank temperature: 1-3# 95°C, 4# 40°C, 5-7# 95°C, 8# 90°C±5, vehicle speed: 50 m / min, liquid carrying rate: 80%.

[0083] The bleaching process is as follows: NaOH: 1.5 g / L, hydrogen peroxide 27.5 wt. %: 10 g / L, stabilizer OUR-266: 6 g / L, penetrant WA-M: 5 g / L, chelating agent SQ-A: 6 g / L, steamer 100° C., stacking 25 min, water washing tank temperature: 1-3# 95° C., 4# 40° C., 5-7# 95° C., 8# 90° C.±5, vehicle speed: 60 m / min, liquid carrying rate: 80%.

[0084] The pre-shrinking process is as follows: vehicle speed 35m / min, spray wet opening 15%, rubber blanket temperature 115°C, felt blanket temperature 80°C, rolling distance 8mm, radial shrinkage of lower fabric -2%, ensuring the size of the printed pattern, feeding the fabric in a loose state, lifting the tension roller of the fabric upward, and reducing the downward tension by 1kg.

[0085] The process of the one-bath step of wrinkle-free baking is as follows: the cloth pressing wheel speed is 5%, the cloth pressing wheel presses the cloth edge by 0.6 cm (increasing the effective width of the fabric), the width is expanded to the upper limit of the finished product width + 7 inches, the screw is set at -20 / -10 / -5 / 0 / 0 / 0 / 0 / 0 / 0 / -1cm, ensuring that the width and shrinkage meet the standards, the temperature is 140°C, the upper air volume is 70%, the lower air volume is 60%, the exhaust volume is 60%, the drying room processing time is 40s, and the working liquid composition is: penetrant 2g / L, resin 110g / L, fiber protector 30g / L, softener 40g / L, resin synergist 20g / L, catalyst 17g / L, and the balance is water.

[0086] Comparative Example 1

[0087] The fabric prepared in this comparative example is made of the same material as the fabric in Example 1, but the spandex core-spun yarn in the warp and weft yarn count uses unsteamed SPANDEX spandex yarn. The finished fabric specifications are: CVC45 (SPANDEX40D) * CVC45 (SPANDEX40D) * 130 * 80 * 53 / 54, structure: 2 / 1Z, and is woven with blended yarn using long-staple cotton fiber, polyester fiber and spandex stretch yarn as raw materials. The blending ratio of long-staple cotton fiber to polyester and spandex stretch yarn is 64%: 27%: 9%; the blended yarn is made of carded ring-spun yarn.

[0088] The fabric finishing process is basically the same as that in Example 1, except that:

[0089] Singeing → deboiling → bleaching → shaping → pre-shrinking → printing → baking → iron-free baking in one bath → pre-shrinking → finished fabric, with more processing and shaping steps in comparison ratio.

[0090] Comparative Example 2

[0091] The fabric prepared in this comparative example has the same printing pattern as the fabric in Example 2. The finished fabric specifications are: CVC40 (SPANDEX40D) * CVC40 (SPANDEX40D) * 130 * 90 * 53 / 54, and the structure is 2 / 2Z. It is woven with blended yarn using long-staple cotton fiber, polyester fiber and spandex stretch yarn as raw materials, and the blending ratio of long-staple cotton fiber to polyester and spandex stretch yarn is 64%: 27%: 9%.

[0092] The fabric finishing process is basically the same as that in Example 2, except that:

[0093] Singeing → deboiling → bleaching → pre-shrinking → printing → baking → liquid ammonia → one-bath ironing baking → pre-shrinking → finished fabric. The comparative example has more liquid ammonia processing steps. Compared with the embodiment, the embodiment has better flatness.

[0094] Comparative Example 3

[0095] The fabric prepared in this comparative example has the same specifications and organization as the fabric in Example 3. The finished fabric specifications are: CVC50 (SPANDEX40D) * CVC50 (SPANDEX40D) * 130 * 90 * 53 / 54, organization: 5-piece 3-diameter satin, and is woven with blended yarns made of long-staple cotton fiber, polyester fiber and spandex stretch yarn. The blending ratio of long-staple cotton fiber to polyester and spandex stretch yarn is 64%: 27%: 9%; the blended yarn uses carded ring-spun yarn. The fabric finishing process is basically the same as that in Example 3, except that:

[0096] In the one-bath process of no-ironing baking, the resin is 140g / L, the fiber protector is 30g / L, the softener is 40g / L, the resin enhancer is 20g / L, and the catalyst is 21g / L. The amount of resin and catalyst used in the comparative example is increased.

[0097] The fabrics of Examples 1-3 and Comparative Examples 1-3 were subjected to performance tests, and the test results are shown in Table 1.

[0098] Table 1 Performance test results

[0099]

[0100] Compared with the comparative example, the comparative example uses unsteamed SPANDEX spandex yarn, which has unstable elasticity and causes poor flatness of the fabric, which fully demonstrates the stability of the steamed spandex yarn process. At the same time, the process adopted by the present invention omits the mercerizing and liquid ammonia processes, greatly reduces the dyeing and finishing time, and achieves the purpose of energy saving and consumption reduction.

[0101] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A method for shortening the dyeing and finishing process of polyester-cotton four-way stretch resin fabric, characterized in that: The following steps are involved: Singeing → deboiling → bleaching → pre-shrinking → printing → baking → iron-free baking in one bath → pre-shrinking → finished fabric; The fabric is woven with core-spun yarn made of long-staple cotton fiber, polyester fiber blended yarn CVC and spandex stretch silk; The blended yarn CVC of long-staple cotton fiber and polyester fiber is a carded ring-spun yarn; The usage of the long-staple cotton fiber is 60-64%, the usage of the polyester fiber is 25%-27%, and the usage of the spandex stretch yarn is 9-15%.

2. The method for shortening the dyeing and finishing process of polyester-cotton four-way stretch resin fabric according to claim 1, characterized in that: The fineness of CVC is 40 to 50 pieces.

3. The method for shortening the dyeing and finishing process of polyester-cotton four-way stretch resin fabric according to claim 1, characterized in that: The warp density of the finished fabric is 120-130 strands / inch, and the weft density is 80-90 strands / inch.

4. The method for shortening the dyeing and finishing process of polyester-cotton four-way stretch resin fabric according to claim 1, characterized in that: During the spinning process of the core-spun yarn, the spandex yarn fineness is 40D, the pre-draft multiple is 3.5-4 times, the elasticity of the stretch fabric is controlled between 25-35%, the front roller speed is between 180 and 190 r / min, the twist setting temperature is 120-125°C, the time is 18-25 minutes, and the elasticity is controlled by two vacuum shaping.

5. The method for shortening the dyeing and finishing process of polyester-cotton four-way stretch resin fabric according to claim 1, characterized in that: The singeing process is as follows: vehicle speed 120 m / min, double-sided cutting and burning, flame intensity 14 Mbar.

6. The method for shortening the dyeing and finishing process of polyester-cotton four-way stretch resin fabric according to claim 1, characterized in that: The deboiling process is as follows: NaOH: 15-20 g / L, refining agent SA-U: 2-4 g / L, penetrant WA-M: 4-6 g / L, chelating agent SQ-A: 3-5 g / L, steamer 100°C, stacking 15 min, water washing tank temperature: 1-3# 95°C, 4# 40°C, 5-7# 95°C, 8# 90°C±5, vehicle speed: 50-60 m / min, liquid carrying rate: 70-85%.

7. The method for shortening the dyeing and finishing process of polyester-cotton four-way stretch resin fabric according to claim 1, characterized in that: The bleaching process is as follows: NaOH: 1-2.5 g / L, hydrogen peroxide 27.5 wt. %: 7-10 g / L, stabilizer OUR-266: 4-6 g / L, penetrant WA-M: 3-5 g / L, chelating agent SQ-A: 4-6 g / L, steamer at 100° C., stacking for 15-25 min, water washing tank temperature: 1-3# 95° C., 4# 40° C., 5-7# 95° C., 8# 90° C.±5, vehicle speed: 50-60 m / min, liquid carrying rate: 70-85%.

8. The method for shortening the dyeing and finishing process of polyester-cotton four-way stretch resin fabric according to claim 1, characterized in that: The pre-shrinking process is as follows: vehicle speed 30-40m / min, spray wet opening 15%, rubber blanket temperature 110-130℃, wool blanket temperature 70-90℃, rolling distance 6-12mm, and the radial shrinkage of the lower fabric is controlled between 0 and -2%.

9. The method for shortening the dyeing and finishing process of polyester-cotton four-way stretch resin fabric according to claim 1, characterized in that: The process of the one-bath step of wrinkle-free baking is as follows: the cloth pressing wheel speed is 2-7%, the cloth pressing wheel presses the cloth edge by 0.6-1.2 cm, the width is expanded to the upper limit of the width of the finished product + 6-7 inches, the screw is set at -20 / -10 / -5 / 0 / 0 / 0 / 0 / 0 / 0 / -1 cm, the temperature is 130-150° C., the upper air volume is 70%, the lower air volume is 60%, the exhaust air volume is 60%, the drying room processing time is 30-60 s, and the working liquid composition is: penetrant 2-3 g / L, resin 90-160 g / L, fiber protector 20-30 g / L, softener 5-40 g / L, resin synergist 10-20 g / L, catalyst 14-24 g / L, and the balance is water.

10. The method for shortening the dyeing and finishing process of polyester-cotton four-way stretch resin fabric according to claim 1, characterized in that: The process of the pre-shrinking step is as follows: the cloth is fed in a loose state, and the cloth dropping tension roller is lifted upward with a tension within 1 kg.

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