Method for improving tearing resistance and pilling resistance after multiple times of washing of fabric

Abstract

The invention discloses a method for improving fabric tearing resistance and pilling resistance after multiple times of washing, and belongs to the technical field of fabric printing and dyeing. Comprising the following steps: (1) pretreatment: turning a gray fabric, sewing, padding in a cold pad batch working solution for piling, padding in a scouring and bleaching working solution, singeing, feeding the fabric through a mercerizing machine, padding in an alkali solution, washing and the like to obtain a semi-finished product; (2) dyeing: feeding the semi-finished product into cloth, padding in a dyeing solution at room temperature, then sequentially carrying out infrared drying, hot air drying, drying, baking, cold water roller treatment, cropping frame treatment and cloth feeding padding in a reducing solution, and finally sequentially carrying out cold water washing and other treatment to obtain dyed cloth; and (3) after-finishing: feeding the dyed cloth, padding in an after-finishing working solution, and then sequentially carrying out photoelectric weft straightening, tentering baking, cold water rolling and the like. The method effectively solves the problems that in the prior art, improvement of the tearing performance of the fabric is incompatible with the repeated washing resistance and the pilling resistance, the tearing loss rate of the fabric is high, and the pilling resistance has adverse effects on the tearing of the fabric.

Description

Technical Field

[0001] The invention belongs to the technical field of fabric printing and dyeing, and particularly relates to a method for improving the tear resistance and anti-pilling performance of fabric after multiple washings. Background Art

[0002] Traditional anti-pilling fabrics are not washable and tear poorly, which cannot meet market demand. There are many R&Ds for fabrics with single performance at home and abroad, but in traditional finishing processes, due to the incompatibility of improving tearing and washing resistance and anti-pilling, after anti-pilling finishing, the tear loss rate of the fabric is high, it is not washable, and it does not meet customer index requirements. It is not possible to give a piece of fabric the functions of improving the tearing of the fabric and resistance to pilling after multiple washings. Therefore, there is an urgent need to develop a fabric that can simultaneously improve the tearing of the fabric and resistance to pilling after multiple washings on the same fabric. Summary of the invention

[0003] In view of the above problems existing in the prior art, the present invention provides a method for improving the tearing performance and anti-pilling performance of fabric after multiple washings. In the pre-treatment, the present invention first performs low-temperature and low-alkali scouring and bleaching treatment and then singes. In the post-treatment, an auxiliary agent for improving the tearing performance of the fabric and an auxiliary agent for resisting multiple washings and resisting pilling are impregnated and padded, thereby effectively solving the problems in the prior art that improving the tearing performance of the fabric and resisting multiple washings and resisting pilling performance are incompatible, and the tearing loss rate of the fabric is high and the anti-pilling has an adverse effect on the tearing performance of the fabric.

[0004] To achieve the above purpose, the technical solution adopted by the present invention to solve the technical problem is:

[0005] The object of this invention is to provide a method for improving fabric tearing and resistance to anti-pilling performance after multiple washings, which comprises the following steps:

[0006] (1) Pretreatment: The grey fabric is turned over and seamed in turn, and then immersed in cold padding working solution for 20-28 hours at room temperature at a speed of 80-90 m / min, and then immersed in padding scouring and bleaching working solution with a liquid rate of 80-90%, and then stacked in a steamer at a temperature of 70-80°C for 50-70 minutes, washed and dried with hot water at 80-90°C, and then singed by a singeing machine at a speed of 100-120 m / min, fed into a mercerizing machine, immersed in alkali solution, washed, dried, shaped, and dropped. cloth to obtain semi-finished products; the cold stacking working solution includes the following components: caustic soda 35-45g / L, hydrogen peroxide 4-5g / L, low-temperature refining agent MJ-206: 3-5g / L and chelating dispersant ST121: 1-3g / L; the scouring and bleaching working solution includes the following components: caustic soda 5-6 / L, hydrogen peroxide 6-7g / L, low-temperature refining agent MJ-206: 3-5g / L and chelating dispersant ST121: 1-3g / L and water glass 5g / L.

[0007] (2) Dyeing: the semi-finished product obtained in step (1) is fed into the cloth and then dipped into the dye solution at room temperature, and then sequentially subjected to infrared drying, hot air drying, drying, baking, cold water rollers, and a cloth drop rack, and then dipped into the reducing solution, and then reduced and steamed at a temperature of 100-102°C, and finally sequentially subjected to cold water washing, hydrogen peroxide oxidation, soap washing, neutralization water washing, water washing, drying, and cloth drop to obtain a dyed cloth; during hot air drying, the air chamber temperature is 90°C, 140°C, and 170°C, respectively; during baking, the air chamber temperature is 200-210°C. The dye solution includes the following components: dispersed HBL: 1.2g / l, dispersed yellow brown S-2RFL: 4g / l, dispersed ruby ​​S-5BL: 0.68g / l, reduced olive T: 1.9g / l, reduced brown BR: 3g / l, reduced golden yellow RK: 1.6g / l, anti-migration agent ST-200A: 10g / l, and the liquid carrying rate is 45-50%.

[0008] (3) Post-finishing: the dyed fabric obtained in step (2) is immersed in a post-finishing working liquid, and then sequentially subjected to photoelectric weft straightening, tentering baking, cold water roller, water mist moistening, pre-shrinking, felt blanket, drying, cold water roller and cloth dropping, to obtain a multifunctional fabric with improved tear resistance and anti-pilling after multiple washings; the post-finishing working liquid comprises the following components: smoothing agent HDP: 10-20 g / L, anti-pilling N96101: 15-30 g / L.

[0009] Furthermore, in step (1), the cold stack working solution includes the following components: 35-45 g / L caustic soda, 4-5 g / L hydrogen peroxide, 3-5 g / L low-temperature refining agent MJ-206 and 1-3 g / L chelating dispersant ST121; the scouring and bleaching working solution includes the following components: 5-6 / L caustic soda, 6-7 g / L hydrogen peroxide, 3-5 g / L low-temperature refining agent MJ-206 and 1-3 g / L chelating dispersant ST121 and 5 g / L water glass.

[0010] Furthermore, in step (1), low-temperature scouring and bleaching: stacking in a steamer at a temperature of 70-80°C for 50-70 minutes.

[0011] Furthermore, in step (2), three burners are used during singeing, two forward burners and one reverse burner.

[0012] Furthermore, in step (3), the post-finishing working solution includes the following components: smoothing agent HDP: 20 g / L, anti-pilling agent N96101: 30 g / L.

[0013] Beneficial effects of the present invention:

[0014] 1. The present invention endows the fabric with the function of improving the tear resistance and anti-pilling after multiple washings through pre-treatment, dyeing and post-treatment. The low-temperature and low-alkali scouring and bleaching in the pre-treatment, the post-singeing is adopted, and the additives for improving the tear resistance of the fabric and the anti-pilling additives are used through padding in the post-treatment. The problems in the prior art of improving the tear resistance of the fabric and the incompatibility of the anti-pilling performance after multiple washings, the high tear loss rate of the fabric and the adverse effect of the anti-pilling performance after multiple washings on the tearing of the fabric are effectively solved.

[0015] 2. Through the pre-treatment process designed by the present invention, the synergistic effect with caustic soda and hydrogen peroxide is exerted during the stacking process to achieve the effects of degradation, expansion, diffusion, emulsification, degreasing and the like of cotton fiber impurities, ensuring that the strength of the fabric is reduced very little and the strength of the fabric is ensured. In the process of using the low-temperature and low-alkali scouring and bleaching singeing process, the natural impurities, slurry and oil stains on the clean grey cloth can be removed, and the hairiness is no longer wrapped by the slurry and can be completely exposed, so that the singeing grade can reach above grade 4, ensuring that the strength of the fabric is reduced very little and the short fibers on the surface of the fabric can be removed to above grade 4, improving the strength of the fabric and pilling to provide qualified semi-finished products.

[0016] 3. The cold stack working fluid has good alkali resistance and wettability. In the finishing process, the auxiliary working fluid for improving tear resistance and resistance to multiple washings and anti-pilling is selected to reduce the influence between the two and enhance the compatibility between the two, so that the same fabric can have the functions of improving tear resistance and resistance to multiple washings and anti-pilling. DETAILED DESCRIPTION

[0017] The specific implementation modes of the present invention are described below so that those skilled in the art can understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific implementation modes. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, these changes are obvious, and all inventions and creations utilizing the concept of the present invention are protected.

[0018] In the embodiment of the present invention, T65 / C3521*21 108*56*63 2 / 1 left-hand oblique yarn card is used as an example for preparation.

[0019] Example 1

[0020] A method for preparing a fabric with improved tear resistance and anti-pilling after multiple washings, comprising the following steps:

[0021] (1) Pretreatment: The grey cloth is turned over and seamed in sequence, and piled in a cold rolling pile working solution at room temperature at a speed of 90 m / min for 20 h by a multiple immersion method, with a liquid carrying rate of 80%; then, it is padded in a scouring and bleaching working solution by a multiple immersion method, with a liquid carrying rate of 90%, and piled in a steamer at a temperature of 80°C for 70 min, washed and dried with hot water at 90°C, and then singed in a singeing machine at a speed of 100 m / min for two positive and one negative, and then fed into a mercerizing machine, padded with alkali solution, washed, dried, shaped, and dropped in sequence to obtain a semi-finished product;

[0022] The cold stack working fluid includes the following components: caustic soda 35g / L, hydrogen peroxide 4g / L, low temperature refining agent MJ-206: 3-5g / L and chelating dispersant ST121: 1-3g / L;

[0023] The scouring and bleaching working solution includes the following components: caustic soda 6 / L, hydrogen peroxide 7g / L, low-temperature refining agent MJ-206: 3-5g / L and chelating dispersant ST121: 1-3g / L and water glass 5g / L.

[0024] (2) Dyeing: The semi-finished product obtained in step (1) is fed into the cloth and then dipped into a dyeing solution comprising: dispersed HBL: 1.2 g / l, dispersed yellow brown S-2RFL: 4 g / l, dispersed ruby ​​S-5BL: 0.68 g / l, reduced olive T: 1.9 g / l, reduced brown BR: 3 g / l, reduced golden yellow RK: 1.6 g / l, and anti-migration agent ST-200A: 10 g / l at room temperature, with a liquid carrying rate of 50%, and then subjected to infrared drying, hot air drying, drying, baking, cold water rollers, and a cloth drop rack in sequence, and then dipped into the reducing solution, and reduced steamed at a temperature of 100° C., and finally subjected to cold water washing, hydrogen peroxide oxidation, soap washing, neutralization water washing, water washing, drying, and cloth drop in sequence to obtain a dyed cloth; during hot air drying, the air chamber temperatures are 90° C., 140° C., and 170° C. in sequence; during baking, the air chamber temperature is 210° C.

[0025] (3) Post-finishing: The dyed fabric obtained in step (2) is dipped into a post-finishing working liquid, and then sequentially subjected to photoelectric weft straightening, tentering baking, cold water roller, water mist moistening, pre-shrinking, felt blanket, drying, cold water roller and cloth dropping, to obtain a multifunctional fabric with improved tear resistance and anti-pilling after multiple washings; wherein the post-finishing working liquid comprises the following components: smoothing agent HDP: 20 g / L, anti-pilling N96101: 30 g / L.

[0026] Example 2

[0027] The difference between this embodiment and embodiment 1 is that in the step (1) of this embodiment, the pre-treatment is first singeing, and then high temperature and high alkali scouring and bleaching, and the rest of the process is consistent with embodiment 1. The specific process of the adjusted pre-treatment is as follows:

[0028] Pretreatment: turn the grey cloth over and sew the ends of the grey cloth in turn, then singe it at a speed of 80-90m / min, adopt two positive and one reverse singeing, immerse and pile it in cold stacking working liquid at room temperature for 20-28h, then immerse and roll in scouring and bleaching working liquid with a liquid rate of 80-90%, stack it in a steamer at 100℃ for 50-70min, wash it with hot water at 90℃, and finally dry it, feed it into a mercerizing machine, immerse it in alkali solution, wash it with water, dry it, shape it, and drop it to obtain a semi-finished product.

[0029] Example 3

[0030] The difference between this embodiment and embodiment 1 is that different softeners are used in the post-finishing of this embodiment, and the rest of the process is the same as that of embodiment 1. The specific process of the post-finishing after adjustment is as follows:

[0031] Finishing: The dyed fabric obtained in step (2) of Example 1 is dipped in a finishing working solution, and then sequentially subjected to photoelectric weft straightening, tentering baking, cold water rollers, water mist moistening, preshrinking, felt blanketing, drying, cold water rollers and cloth dropping to obtain a multifunctional fabric with improved tear resistance and anti-pilling after multiple washings;

[0032] The finishing working fluid includes: softener MJ-8237: 20g / L and anti-pilling agent N96101: 30g / L.

[0033] Example 4

[0034] The difference between this embodiment and embodiment 1 is that different softeners are used in the post-finishing of this embodiment, and the rest of the process is the same as that of embodiment 1. The specific process of the post-finishing after adjustment is as follows:

[0035] Finishing: The dyed fabric obtained in step (2) of Example 1 is dipped in a finishing working solution, and then sequentially subjected to photoelectric weft straightening, tentering baking, cold water rollers, water mist moistening, preshrinking, felt blanketing, drying, cold water rollers and cloth dropping to obtain a multifunctional fabric with improved tear resistance and anti-pilling after multiple washings;

[0036] The finishing working fluid includes: softener 8136: 20g / L and anti-pilling N96101: 30g / L.

[0037] Example 5

[0038] The difference between this embodiment and embodiment 1 is that a different anti-pilling agent is used in the post-finishing process of this embodiment, and the rest of the process is consistent with embodiment 1. The specific process of the adjusted post-finishing is as follows:

[0039] Finishing: the dyed fabric obtained in step (2) of Example 1 is dipped into the finishing working liquid, and then sequentially subjected to photoelectric weft straightening, tentering baking, cold water roller, water mist moistening, preshrinking, felt blanket, drying, cold water roller and cloth dropping, to obtain a multifunctional fabric with improved tear resistance and anti-pilling after multiple washings;

[0040] The finishing working solution includes the following components: smoothing agent HDP: 20 g / L and anti-pilling DM3773: 30 g / L.

[0041] Example 6

[0042] The difference between this embodiment and embodiment 1 is that a different anti-pilling agent is used in the post-finishing process of this embodiment, and the rest of the process is consistent with embodiment 1. The specific process of the adjusted post-finishing is as follows:

[0043] Finishing: the dyed fabric obtained in step (2) of Example 1 is dipped into the finishing working liquid, and then sequentially subjected to photoelectric weft straightening, tentering baking, cold water roller, water mist moistening, preshrinking, felt blanket, drying, cold water roller and cloth dropping, to obtain a multifunctional fabric with improved tear resistance and anti-pilling after multiple washings;

[0044] The finishing working solution includes the following components: smoothing agent HDP: 20 g / L and anti-pilling agent P-18: 30 g / L.

[0045] The performance of the finished products of the above embodiments 1 to 6 was tested, and the test results are shown in Table 1.

[0046] Table 1 Fabric properties prepared in different embodiments

[0047]

[0048] According to the test results in Table 1, compared with Example 1, Example 2 changes the process sequence in the pretreatment process, resulting in that the performance of the fabric finally prepared not only fails to meet the corresponding standard requirements, but also cannot be compared with Example 1 of the present invention.

[0049] Examples 3 to 6 respectively adjusted the composition of the post-finishing working solution. Among them, although the adjustments of Examples 3 and 4 improved their tearing force, the anti-pilling performance after multiple water washings could not meet the standards. The adjustments of Examples 5 and 6 not only failed to meet the requirements of the standards, but also could not be compared with the product prepared in Example 1 of the present invention.

[0050] Therefore, the present invention effectively solves the problems in the prior art of incompatibility between improving the tearing performance of the fabric and the anti-pilling performance of the anti-pilling performance of the anti-pilling performance of the anti-pilling performance of the anti-pilling performance of the anti-pilling performance of the anti-pilling performance of the anti-pilling performance of the fabric, the high tearing loss rate of the fabric, and the adverse effect of the anti-pilling performance on the tearing of the fabric, by low-temperature and low-alkali scouring and bleaching in the pre-treatment, post-singing, and optimization of the auxiliary agent for improving the tearing of the fabric by padding in the post-treatment, and finally obtains a fabric with excellent performance.

[0051] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A method for improving the tear resistance and pilling resistance of fabrics after multiple washings, characterized in that: The following steps are involved: (1) Pretreatment The grey cloth is turned over, sewn, impregnated with cold rolling pile working solution, impregnated with scouring and bleaching working solution, and then singed, and then fed into a mercerizing machine, impregnated with alkali solution, washed, dried, shaped, and dropped to obtain a semi-finished product; (2) Dyeing After the semi-finished product is fed into the cloth, it is dipped into the dye solution at room temperature, with a liquid rate of 45-50%, and then it is successively subjected to infrared drying, hot air drying, drying, baking, cold water rollers, and a cloth drop rack, and then the cloth is dipped into the reducing solution, and reduced steam is steamed at a temperature of 100-102°C, and finally it is successively subjected to cold water washing, hydrogen peroxide oxidation, soap washing, neutralization water washing, water washing, drying, and cloth drop to obtain the dyed cloth; (3) Post-processing The dyed cloth is dipped into the finishing liquid, and then sequentially processed by photoelectric weft straightening, tentering baking, cold water roller, water mist moistening, pre-shrinking, felting, drying, cold water roller and cloth dropping; The post-finishing working solution comprises: 10-20 g / L of smoothing agent HDP and 15-30 g / L of anti-pilling N96101.

2. The method according to claim 1, characterized in that In step (1), the working fluid is cold rolled in a multi-immersion manner at room temperature, with a vehicle speed of 80-90 m / min, a liquid carrying rate of 80-90%, and a time of 20-28 h.

3. The method according to claim 1 or 2, characterized in that: The cold stack working fluid comprises: 35-45 g / L caustic soda, 4-5 g / L hydrogen peroxide, 3-5 g / L low-temperature refining agent MJ-206 and 1-3 g / L chelating dispersant ST121.

4. The method according to claim 1, characterized in that: In step (1), the working solution is scourged and bleached by multiple immersion at a temperature of 70-80° C., the vehicle speed is 80-90 m / min, the liquid carrying rate is 80-90%, and the time is 50 to 70 min.

5. The method according to claim 1 or 4, characterized in that: The scouring and bleaching working solution comprises: 5-6 / L caustic soda, 6-7g / L hydrogen peroxide, 3-5g / L low-temperature refining agent MJ-206, 1-3g / L chelating dispersant ST121 and 5g / L water glass.

6. The method according to claim 1, characterized in that The singeing is carried out by two forward and one reverse, and the speed is 100-120m / min.

7. The method according to claim 1, characterized in that The dye solution used in step (2) includes: disperse HBL: 1.2 g / l, disperse yellow brown S-2RFL: 4 g / l, disperse ruby ​​S-5BL: 0.68 g / l, reduced olive T: 1.9 g / l, reduced brown BR: 3 g / l, reduced golden yellow RK: 1.6 g / l, and anti-migration agent ST-200A: 10 g / l.

8. The method according to claim 1, characterized in that The post-finishing working solution comprises: 15-20 g / L of smoothing agent HDP and 20-30 g / L of anti-pilling N96101.

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