Low formaldehyde, fluorine-free, non-iron, single repellent and single absorption finishing process of woven fabric

Abstract

The application discloses a low-formaldehyde fluorine-free no-iron single-proofing and single-absorbing finishing process of woven fabric, and belongs to the technical field of single-proofing and single-absorbing of fabric. The technical scheme is as follows: the pretreated fabric is subjected to dyeing or whitening, then is subjected to no-iron, baking, printing, baking, tentering, dry setting and preshrinking to obtain a finished product. The single-proofing and single-absorbing finishing process of the application uses fluorine-free waterproofing agent ZELAN R3 to replace fluorine-containing waterproofing agent, and meets the requirements of environmental protection and green, healthy and sustainable development.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of fabric single-proofing and single-absorbing, and in particular to a low-formaldehyde fluorine-free no-iron single-proofing and single-absorbing finishing process for woven fabric. BACKGROUND

[0002] At present, people pay more and more attention to the functional connotation of clothes. When going outdoors, people may suddenly encounter rainy weather, at which time the clothes need to have certain waterproof performance on the surface, so that people will not be wetted by rain even if they wear the clothes in the rainy day. Meanwhile, in recent years, extreme weather appears more and more frequently, and hot and extremely cold weather appears more and more frequently. Clothes with the function of regulating body temperature can help outdoor workers to better regulate temperature and avoid the occurrence of events that endanger life safety such as heatstroke in high temperature. After being in a hot environment or after a lot of exercise, the skin will sweat a lot. If the sweat is not quickly discharged, the skin will have a sticky feeling due to the gradual accumulation of the sweat. The sweat is attracted by the clothes, which may further increase the weight of the clothes and cause more serious discomfort. Therefore, a functional fabric with an inner layer that can absorb moisture and an outer layer that can prevent water is needed to solve the above problems.

[0003] At present, in order to reduce the moisture content of the skin side, ensure the transmission of water vapor and improve the comfort of wearing, a one-way moisture transfer technology for fabric is used to realize the point-like hydrophobic performance of the surface of the fabric and make the fabric have excellent one-way moisture transfer function. However, in the existing one-way moisture transfer technology, fluorine-containing water-repellent agents are used for finishing. The C-F bond in the fluorine-containing water-repellent agent has high bond energy, which can significantly reduce the surface free energy of the textile, and the fluorine-containing water-repellent agent has superior water-repellent performance in one-way moisture transfer finishing. However, the fluorine-containing water-repellent agent has physiological toxicity and environmental degradation problems. The fluorine-containing substances basically contain PFOA and PFOS, which can be accumulated in the environment for a long time and have poor environmental performance. More importantly, it has been proved that the fluorine-containing substances have negative effects such as carcinogenicity, and have been banned by the United States Environmental Protection Agency (EPA) and the like.

[0004] For example, Chinese Invention Patent CN110395019A discloses a preparation process of one-way moisture transfer and quick-drying fabric. The process is to perform waterproof treatment on plasma-modified bamboo fibers to obtain waterproof bamboo fibers. The waterproof treatment is specifically as follows: the plasma-modified bamboo fibers are soaked in a fluorine-containing waterproof agent for 5-6 minutes, then rinsed and dried. Therefore, in view of the above problems existing in the existing one-way moisture transfer technology, a fluorine-free single-proofing and single-absorbing finishing process for woven fabric needs to be developed. SUMMARY

[0005] The technical problem to be solved by the application is to overcome the shortcomings of the prior art and provide a low-formaldehyde fluorine-free no-iron single-proofing and single-absorbing finishing process for woven fabric. The fluorine-free waterproofing agent ZELAN R3 is used to replace the fluorine-containing waterproof agent, which meets the requirements of environmental protection and green and healthy sustainable development.

[0006] The technical scheme of the present application is:

[0007] The low formaldehyde, fluorine-free, non-iron, single-proofing and single-absorbing finishing process of the woven fabric comprises the following steps: dyeing or whitening the pretreated fabric, then performing non-iron, baking, printing, baking, tentering, dry setting and preshrinking to obtain the finished product; the working solution of the non-iron process comprises CLA 100-200 g / L, CLB 10-20 g / L and R-PU 10-30 g / L; the working solution of the printing process comprises the following mass percentages of auxiliaries: fluorine-free waterproofing auxiliary ZELAN R3 10-15%, waterproofing crosslinking agent 1-1.5%, thickening agent 6-8% and anti-seepage agent 1-2%, and the rest is soft water; the working solution of the printing process is prepared by the following steps: adding soft water to the thickening agent and stirring until uniform, then adding the anti-seepage agent, the fluorine-free waterproofing auxiliary ZELAN R3 and finally the waterproofing crosslinking agent; the tentering process comprises the following steps: functional auxiliary HSD 30-50 g / L, functional auxiliary KNITTEX 7636 30-50 g / L, drying room temperature 130-140 DEG C and baking time 24-40 s.

[0008] Since the thickening agent is a weak anion, the fluorine-free waterproofing auxiliary and the waterproofing crosslinking agent are weak cations, therefore, when preparing the printing working solution, the soft water is first added to the thickening agent and stirred until uniform, then the waterproofing auxiliary and the crosslinking agent are added, so as to prevent the auxiliaries with different ionic properties from reacting under the mutual attraction of charges and causing uneven preparation and printing.

[0009] Preferably, the printing process comprises the following steps: 100% of the screen printing rate, 125-mesh or 150-mesh screen, 30-50 m / min of the speed, 40%-50% of the magnetic force, 8# or 10# of the magnetic bar, drying room temperature 130-140 DEG C.

[0010] Preferably, the baking process comprises the following steps: drying room temperature 140-160 DEG C, baking time 40-120 s and air volume 70-80%.

[0011] Preferably, the dry setting process comprises the following steps: drying room temperature 150-160 DEG C and drying time 24-50 s.

[0012] Preferably, in the printing process, the waterproofing crosslinking agent is waterproofing crosslinking agent EXTENDER SFB, the thickening agent is thickening agent LAMBICOL L491 and the anti-seepage agent is anti-seepage agent FS-30.

[0013] Preferably, the pretreatment of the woven fabric comprises the following steps:

[0014] 1) singeing: 10-20 mbar of the flame intensity, transparent or direct singeing mode and 80-120 m / min of the speed;

[0015] 2) Cold pad-batch: caustic soda NaOH 30-50 g / L, H2O2 9-15 g / L, cold pad-batch chelating finishing agent MAG 15-18 g / L, and 24 h of pad-batch time;

[0016] 3) Water washing scouring: caustic soda NaOH 20-50 g / L, refining agent CRC 5-7 g / L, penetrating agent ZFC 6-8 g / L, chelating agent SQ-A 4-5 g / L, dewaxing agent SA-U 4-5 g / L, steaming temperature 100 °C, pad-batch time 10-25 min, and speed 50-70 m / min;

[0017] 4) Mercerizing: caustic soda NaOH 160-300 g / L, concentrated alkali temperature 50-55 °C, diluted alkali temperature 80-85 °C, stable temperature 85-90 °C, and speed 70-80 m / min;

[0018] 5) Dry setting: speed 30-50 m / min, and oven temperature 180-200 °C.

[0019] Preferably, the pretreatment of the woven fabric comprises the following steps:

[0020] 1) Singeing: flame intensity 20 mbar, singeing mode is direct singeing, and speed 120 m / min;

[0021] 2) Desizing: desizing enzyme OPT-280 4-6 g / L, penetrating agent MRZ 4-6 g / L, refining enzyme 601 L conc 2-4 g / L, extracting agent RED 4-6 g / L, steaming temperature 100 °C, pad-batch time 15 min, and speed 70 m / min;

[0022] 3) Scouring: caustic soda 20-40 g / L, refining agent CRC 5-7 g / L, penetrating agent MRZ 5-7 g / L, chelating agent SQ-A 4-6 g / L, dewaxing agent SA-U 5-7 g / L, steaming temperature 100 °C, pad-batch time 25 min, and speed 70 m / min;

[0023] 4) Oxygen bleaching: NaOH 1-2 g / L, H2O2 7-10 g / L, chelating agent SQ-A 8-10 g / L, penetrating agent WA-X 5-7 g / L, hydrogen peroxide stabilizer OUR-266 5-7 g / L, steaming temperature 100 °C, pad-batch time 25 min, and speed 60 m / min.

[0024] Preferably, the pretreatment of the woven fabric comprises the following steps:

[0025] 1) Singeing: flame intensity 20 mbar, singeing mode is direct singeing, and speed 120 m / min;

[0026] 2) cold pad-batch: caustic soda NaOH 30-50 g / L, H2O2 9-15 g / L, cold pad-batch chelating finishing agent MAG-L 15-18 g / L, and the stacking time is 24 h;

[0027] 3) water washing scouring: caustic soda NaOH 20-50 g / L, refining agent CRC 5-7 g / L, penetrating agent ZFC 6-8 g / L, chelating agent SQ-A 4-5 g / L, dewaxing agent SA-U 4-5 g / L, the steaming box temperature is 100 ℃, the stacking time is 10-25 min, and the speed is 50-70 m / min;

[0028] 4) mercerization: caustic soda NaOH 160-300 g / L, the concentrated alkali temperature is 50-55 ℃, the diluted alkali zone temperature is 80-85 ℃, the stable zone temperature is 85-90 ℃, and the speed is 70-80 m / min.

[0029] Preferably, the dyeing is pad dry dyeing or cold pad batch dyeing.

[0030] Preferably, the dyeing and fixing are reduction dyeing and fixing or reactive dyeing and fixing.

[0031] Compared with the prior art, the present application has the following beneficial effects:

[0032] 1. The single-proofing and single-absorbing finishing process of the present application uses a fluorine-free waterproofing aid ZELAN R3 to replace a fluorine-containing waterproofing agent. The fluorine-free waterproofing aid ZELAN R3 is made of renewable raw materials extracted from plants, about 60% of which are renewable resources, safe and environmentally friendly, and meets the requirements of environmental protection and green and healthy sustainable development. Meanwhile, the CLA ironing-free resin used in the present application is a special modified polymer without formaldehyde, which can greatly reduce the damage to the fabric and effectively improve the strength of the finished fabric, and has a soft and fluffy hand feeling. Moreover, the R-PU used in the present application is a polyurethane softener, which has excellent compatibility with the waterproof system of the subsequent printing process, does not affect the waterproofness of the fabric, and can well improve the water absorption of the fabric before printing, so that the finished fabric has good ironing-free property, hand feeling, and front waterproofness and back water absorption.

[0033] 2. The present application mainly relies on a rotary screen printing machine to realize single-sided treatment of the fabric. By optimizing the printing process, single-proofing and single-absorbing finishing of the woven fabric can be realized, covering various patterns. Moreover, the single-proofing and single-absorbing finishing process of the present application is simple in steps and mild in conditions, and is suitable for market promotion. DETAILED DESCRIPTION

[0034] In order for those skilled in the art to better understand the technical solutions in the present application, the technical solutions of the present application will be described clearly and completely below in combination with the embodiments of the present application.

[0035] The auxiliaries used in the following examples and comparative examples are all commercially available products, as shown in Table 1.

[0036] Table 1

[0037]

[0038]

[0039] Example 1

[0040] The woven fabric of this example uses cotton elastic yarn, with the specifications: CM100 / 3x FFT20 (105D) x 146 x 70 x 55 / 56, fabric weave: 3 / 1 Z.

[0041] The specific steps of the low formaldehyde, fluorine-free, non-iron, single-proofing, and single-absorbing finishing process of the woven fabric of this example are as follows: the woven fabric is sequentially subjected to pretreatment, dyeing, non-ironing, baking, printing, baking, tentering, dry setting, and preshrinking to obtain the finished product.

[0042] The pretreatment includes the following processes:

[0043] 1) Singeing: flame intensity 16 mbar, singeing method is direct singeing, speed 100 m / min;

[0044] 2) Cold pad-batch: caustic soda NaOH 45 g / L, H2O2 13 g / L, cold pad-batch chelating finishing agent MAG 16 g / L, and stacking time 24 h;

[0045] 3) Washing and scouring: caustic soda NaOH 45 g / L, refining agent CRC 6 g / L, penetrating agent ZFC 6 g / L, chelating agent SQ-A 4 g / L, dewaxing agent SA-U 5 g / L, steaming box temperature 100℃, cloth stacking time 25 min, and speed 50 m / min;

[0046] 4) Mercerizing: caustic soda NaOH 256 g / L, concentrated alkali temperature 50℃, dilute alkali zone temperature 85℃, stable zone temperature 90℃, and speed 70 m / min;

[0047] 5) Dry setting: speed 35 m / min, and oven temperature 195℃.

[0048] Dyeing: dyeing by reduction simultaneous dyeing and fixing.

[0049] Non-ironing: CLA 160 g / L, CLB 16 g / L, R-PU 20 g / L, oven temperature 140℃, baking time 40 s, and air volume 80%.

[0050] Baking process: oven temperature 150℃, baking time 120 s, and air volume 80%.

[0051] Printing working solution: 15 wt.% of ZELAN R3, 1.5 wt.% of EXTENDER SFB, 8 wt.% of LAMBICOL L491, 1 wt.% of FS-30, and the rest of softening water;

[0052] Working solution preparation: the softening water was added to the thickening agent LAMBICOL L491 and stirred until uniform, then the FS-30 was added, then the ZELAN R3 was added, and finally the EXTENDER SFB was added;

[0053] Printing process: 100% of screen printing rate, 125 mesh of screen printing, 30 m / min of printing speed, 50% of magnetic force, 10# of magnetic rod, and 140℃ of drying oven temperature.

[0054] Curing process: 150℃ of drying oven temperature, 120 s of curing time, and 70% of air volume.

[0055] Drying process: 50 g / L of HSD, 30 g / L of KNITTEX 7636, 140℃ of drying oven temperature, and 36 s of curing time.

[0056] Dry setting process: 160℃ of drying oven temperature and 40 s of drying time.

[0057] Pre-shrinking process: 60 m / min of speed, 110℃ of felt temperature, 100℃ of rubber blanket temperature, 0.3 Bar of tension, and 10 mm of nip.

[0058] Example 2

[0059] The woven fabric of the example was made of pure cotton, and the specification was CM60×CM60×210×124×58 / 59, and the fabric organization was 4 / 1 satin.

[0060] The low formaldehyde and fluorine-free easy-care single-proof and single-absorption finishing process of the woven fabric of the example was as follows: the woven fabric was sequentially subjected to pretreatment, dyeing, easy-care, curing, printing, curing, drying, dry setting, and pre-shrinking to obtain the finished product.

[0061] The pretreatment included the following steps:

[0062] 1) Singeing: 20 mbar of flame intensity, normal singeing, and 120 m / min of speed;

[0063] 2) Desizing: 4 g / L of desizing enzyme OPT-280, 5 g / L of penetrant MRZ, 2 g / L of refining enzyme 601Lconc, 4 g / L of extractant RED, 100℃ of steaming box temperature, 15 min of piling time, and 70 m / min of speed;

[0064] 3) Scouring: Soda 20 g / L, Refining agent CRC 6 g / L, Penetrant MRZ 6 g / L, Chelating agent SQ-A 4 g / L, Dewaxing agent SA-U 5 g / L, Steaming temperature 100 °C, Lapping time 25 min, Speed 70 m / min;

[0065] 4) Oxygen bleaching: NaOH 1 g / L, H2O210 g / L, Chelating agent SQ-A 10 g / L, Penetrant WA-X 6 g / L, Hydrogen peroxide stabilizer OUR-266 7 g / L, Steaming temperature 100 °C, Lapping time 25 min, Speed 60 m / min.

[0066] Dyeing: The dyeing method is pad dry dyeing, and the fixing process is reduction continuous dyeing and fixing.

[0067] Ironing process: CLA 120 g / L, CLB 12 g / L, R-PU 20 g / L, Oven temperature 110 °C, Baking time 30 s, Air volume 70%.

[0068] Baking process: Baking time 120 s, Oven temperature 150 °C, Air volume 80%.

[0069] Printing working solution: Fluorine-free water-proofing assistant ZELAN R3 12 wt.%, Water-proofing crosslinking agent EXTENDER SFB 1.2 wt.%, Thickening agent LAMBICOL L491 8 wt.%, Anti-seepage agent FS-30 1.5 wt.%, and the rest is softening water;

[0070] Working solution preparation steps: Add softening water to the thickening agent LAMBICOL L491 and stir until uniform, then add the anti-seepage agent FS-30, then add the fluorine-free water-proofing assistant ZELAN R3, and finally add the water-proofing crosslinking agent EXTENDER SFB;

[0071] Printing process: Screen leakage rate 100%, Round screen mesh size 150 mesh, Speed 40 m / min, Magnetism 50%, Magnetic bar 8#, Oven temperature 140 °C.

[0072] Baking process: Baking time 120 s, Oven temperature 150 °C, Air volume 70%.

[0073] Tentering process: Functional assistant HSD 40 g / L, Functional assistant KNITTEX 7636 40 g / L, Oven temperature 140 °C, Baking time 36 s.

[0074] Dry setting process: Oven temperature 160 °C, Drying time 40 s.

[0075] Pre-shrinking process: speed 60 m / min, blanket temperature 110℃, rubber blanket temperature 100℃, tension 0.3 Bar, nip 10 mm.

[0076] Example 3

[0077] The woven fabric of this example is made of pure cotton, with the specification: CPT80 / 2 x CPT80 / 2 x 150 x 115 x 59 / 60, fabric weave: 2 / 2 Z.

[0078] The specific steps of the low formaldehyde, fluorine-free, easy-care, single-proof, single-absorption finishing process of the woven fabric of this example are as follows: the woven fabric is sequentially subjected to pretreatment, dyeing, easy-care, baking, printing, baking, tentering, dry setting, and pre-shrinking to obtain the finished product.

[0079] The pretreatment includes the following processes:

[0080] 1) Singeing: flame intensity 20 mbar, singeing mode: through singeing, speed 100 m / min;

[0081] 2) Cold pad-batch: caustic soda NaOH 45 g / L, H2O2 13 g / L, cold pad-batch chelating finishing agent MAG 16 g / L, stacking time 24 h;

[0082] 3) Washing and scouring: caustic soda NaOH 45 g / L, refining agent CRC 5 g / L, penetrating agent ZFC 6 g / L, chelating agent SQ-A 4 g / L, dewaxing agent SA-U 5 g / L, steaming box temperature 100℃, cloth stacking time 25 min, speed 50 m / min;

[0083] 4) Mercerizing: caustic soda NaOH 219 g / L, concentrated alkali temperature 50℃, dilute alkali zone temperature 85℃, stable zone temperature 90℃, speed 70 m / min.

[0084] Dyeing: cold pad-batch dyeing.

[0085] Easy-care process: CLA 150 g / L, CLB 15 g / L, R-PU 20 g / L, oven temperature 110℃, baking time 30 s, air volume 70%.

[0086] Baking process: baking time 120 s, oven temperature 150℃, air volume 80%.

[0087] The working solution used for printing: fluorine-free waterproofing agent ZELAN R3 15 wt.%, waterproofing crosslinking agent EXTENDER SFB 1.5 wt.%, thickening agent LAMBICOL L491 8 wt.%, anti-permeation agent FS-30 1 wt.%, and the rest is softening water;

[0088] Working fluid compounding step: add softening water to thickening agent LAMBICOL L491 and stir until uniform, then add anti-permeation agent FS-30, then add fluoride-free water-proofing auxiliary agent ZELAN R3, and finally add water-proofing cross-linking agent EXTENDER SFB;

[0089] Printing process: screen mesh rate 100%, rotary screen mesh number 125, speed 40 m / min, magnetic force 50%, magnetic rod 8#, drying room temperature 140°C.

[0090] Curing process: curing time 120 s, drying room temperature 150°C, air volume 70%.

[0091] Tentering process: functional auxiliary agent HSD 50 g / L, functional auxiliary agent KNITTEX 7636 30 g / L, drying room temperature 140°C, curing time 36 s.

[0092] Dry setting process: drying room temperature 160°C, drying time 40 s.

[0093] Shrinking process: speed 60 m / min, felt temperature 110°C, rubber blanket temperature 100°C, tension 0.3 Bar, nip 8 mm.

[0094] Example 4

[0095] The woven fabric of the present example uses pure cotton, and the specification is CM80 / 2×CM80 / 2×160×72×58 / 59, and the fabric organization is CP.

[0096] The low formaldehyde fluoride-free easy-care single-proofing and single-absorbing finishing process of the woven fabric of the present example is as follows: the woven fabric is sequentially subjected to pretreatment, dyeing, easy-care, curing, printing, curing, tentering, dry setting, and shrinking to obtain the finished product.

[0097] The pretreatment includes the following procedures:

[0098] 1) Singeing: flame intensity 20 mbar, singeing mode is direct singeing, speed 120 m / min;

[0099] 2) Desizing: desizing enzyme OPT-280 4 g / L, penetrating agent MRZ 5 g / L, refining enzyme 601Lconc 2 g / L, extracting agent RED 4 g / L, steaming box temperature 100°C, cloth stacking time 15 min, speed 70 m / min;

[0100] 3) Scouring: caustic soda 20 g / L, refining agent CRC 6 g / L, penetrating agent MRZ 6 g / L, chelating agent SQ-A 4 g / L, dewaxing agent SA-U 5 g / L, steaming box temperature 100°C, cloth stacking time 25 min, speed 70 m / min;

[0101] 4) Oxygen bleaching: NaOH 1 g / L, H2O210 g / L, chelating agent SQ-A10 g / L, penetrant WA-X 6 g / L, hydrogen peroxide stabilizer OUR-266 7 g / L, steaming box temperature 100°C, padder time 25 min, speed 60 m / min.

[0102] Dyeing: the dyeing method is pad dry dyeing, and the fixing process is reactive continuous dyeing and fixing.

[0103] Ironing process: CLA 150 g / L, CLB 15 g / L, R-PU 20 g / L, oven temperature 110°C, baking time 30 s, air volume 70%.

[0104] Baking process: baking time 120 s, oven temperature 150°C, air volume 80%.

[0105] The working solution used for printing: fluorine-free waterproofing agent ZELAN R3 12 wt.%, waterproofing crosslinking agent EXTENDER SFB 1.2 wt.%, thickening agent LAMBICOL L491 8 wt.%, anti-permeation agent FS-30 1.5 wt.%, and the rest is softening water;

[0106] Working solution preparation steps: add softening water to the thickening agent LAMBICOL L491 and stir until uniform, then add the anti-permeation agent FS-30, then add the fluorine-free waterproofing agent ZELAN R3, and finally add the waterproofing crosslinking agent EXTENDER SFB;

[0107] Printing process: screen leakage rate 100%, rotary screen mesh size 150 mesh, speed 40 m / min, magnetic force 50%, magnetic bar 8#, oven temperature 140°C.

[0108] Baking process: baking time 120 s, oven temperature 150°C, air volume 70%.

[0109] Tentering process: functional agent HSD 40 g / L, functional agent KNITTEX 7636 40 g / L, oven temperature 140°C, baking time 36 s.

[0110] Dry setting process: oven temperature 160°C, drying time 40 s.

[0111] Shrinking process: speed 60 m / min, felt temperature 110°C, rubber blanket temperature 100°C, tension 0.3 Bar, nip 10 mm.

[0112] Comparative Example 1

[0113] The difference from Example 1 is that the fluorine-free waterproofing agent ZELAN R3 in the printing working solution is replaced by fluorine-free waterproofing agent WEL GUARD WR-7000 to produce the finished product.

[0114] Comparative Example 2

[0115] The difference from Example 2 is that the softener in the non-ironing process is replaced by SF-P, and the finished product is prepared.

[0116] Comparative Example 3

[0117] The difference from Example 3 is that the functional auxiliary HSD in the tentering process is replaced by WLS, and the finished product is prepared.

[0118] Comparative Example 4

[0119] The difference from Example 4 is that the non-ironing resin CLA in the non-ironing process is replaced by CR-L3, and the catalyst CLB is replaced by CT-3, and the finished product is prepared.

[0120] Comparative Example 5

[0121] The difference from Example 1 is that the oven temperature in the printing process is 120°C.

[0122] Comparative Example 6

[0123] The difference from Example 4 is that the mesh number of the rotary screen in the printing process is 135 mesh Nova screen.

[0124] Comparative Example 7

[0125] The difference from Example 4 is that the magnetic bar in the printing process is 12#.

[0126] The finished products prepared in the above examples and comparative examples are tested for front water resistance and back water absorption of the fabric, and the detection standards are AATCC 22-2014 and AATCC 79-2010 respectively, and the test results are shown in Table 2:

[0127] Table 2

[0128]

[0129]

[0130] From the above examples, comparative examples and Table 2, it can be seen that in Comparative Example 1, the fluorine-free waterproofing agent is changed from ZELAN R3 to WEL GUARD WR-7000. Since WEL GUARD WR-7000 is not compatible with the subsequent draw agent HSD and KNITTEX 7636, it will affect the performance of the fluorine-free waterproofing agent, thereby causing the water resistance of the fabric to deteriorate. In Comparative Example 2, the softener in the non-iron process is replaced from R-PU to SF-P. Since SF-P is a polyethylene wax dispersion emulsion, it forms a film on the surface of the fiber, thus having a greater impact on the water absorption of the fabric, resulting in a significant deterioration in the reverse water absorption of the finished fabric. In Comparative Example 3, the functional agent HSD in the draw process is replaced with the water-absorbing softener WLS. Since the softener WLS is a hydrophilic silicone compound, the energy required for the rotation of the silicon-oxygen bond in the silicone oil is almost zero, and the two methyl groups on the dimethyl silicone oil also occupy a large space position, causing the distance between the fibers to increase, thereby improving the softness and causing the water resistance of the fabric to deteriorate. In Comparative Example 4, the non-iron resin CLA in the non-iron process is replaced with CR-L3, and the catalyst CLB is replaced with CT-3. CR-L3 is a modified N-hydroxymethyl dihydroxy ethylene urea resin. After the fiber is finished with non-iron finishing, the basic structural unit of the fiber and the covalent bond between the macromolecules are introduced in a certain amount. Compared with the unprocessed fiber, the mobility of each unit is limited, and the situation of uneven external force is more uneven, which will inevitably cause the strength to decrease. Moreover, after CR-L3 is finished on the fabric, not all N-hydroxymethyl in CR-L3 reacts with the hydroxyl groups on the cellulose molecules, i.e., there are N-hydroxymethyl on the fabric. Even if CR-L3 has covalent crosslinking reaction with cellulose, the generated covalent crosslinking will also hydrolyze under the action of external conditions (acid, base), and N-hydroxymethyl will be regenerated. N-hydroxymethyl will decompose and release formaldehyde under the action of acid, base and other conditions, thus resulting in lower strength and higher formaldehyde content of the fabric in Comparative Example 4. In Comparative Example 5, the printing oven temperature is adjusted from 140°C to 120°C. Since the temperature of the oven is lower, the drying speed is slower, and the sizing material will gradually penetrate into the fabric, causing the fluorine-free waterproofing agent to adhere to the reverse side of the fabric, thereby causing the water absorption of the reverse side of the fabric to deteriorate. In Comparative Example 6, the screen mesh size in the printing process is adjusted from 150 mesh to 135 mesh. Since the sizing amount of the 135 mesh Nova screen is larger than that of the 150 mesh screen, the fluorine-free waterproofing agent on the reverse side of the fabric increases, thereby causing the water absorption of the reverse side of the fabric to deteriorate. In Comparative Example 7, the magnetic bar in the printing process is adjusted from 8# to 12#. The pressure between the screen and the fabric increases, and the sizing material penetrates into the reverse side of the fabric under a larger pressure, thereby causing the water absorption of the reverse side of the fabric to deteriorate.

[0131] In conclusion, the woven single-proofing and single-absorbing fabric produced by the low formaldehyde and fluorine-free and non-iron single-proofing and single-absorbing finishing process of the woven fabric has good performance in front waterproofness, back hydrophilicity, strength and formaldehyde content, and has strong washing resistance and durable effect.

Claims

1. A low formaldehyde, no fluoro, no iron, single repellent, single absorbent, single finishing process of woven fabric, characterized in that, The pretreated fabric is dyed or whitened, then is subjected to non-iron, baking, printing, baking, tentering, dry setting, preshrinking to produce finished products; The working solution of the non-iron process comprises CLA 100-200 g / L, CLB 10-20 g / L and R-PU 10-30 g / L; The working solution of the printing process comprises the following mass percentage of auxiliaries: fluorine-free waterproofing agent ZELAN R3 10-15%, waterproofing crosslinking agent 1-1.5%, thickening agent 6-8% and anti-seepage agent 1-2%, with the rest being softened water; The working solution of the printing process is prepared by adding softened water to the thickening agent and stirring until uniform, then adding the anti-seepage agent, then adding the fluorine-free waterproofing agent ZELAN R3, and finally adding the waterproofing crosslinking agent; The tentering process is as follows: functional auxiliaries HSD 30-50 g / L, functional auxiliaries KNITTEX 7636 30-50 g / L, oven temperature 130-140℃, and baking time 24-40 s; The printing process is as follows: 100% of the printing rate, 125 or 150 mesh, printing speed 30-50 m / min, magnetic force 40%-50%, magnetic bar 8# or 10#, and oven temperature 130-140℃.

2. A low formaldehyde, no fluoro, no-iron, single repellent, single finish, single cure process for woven fabrics as claimed in claim 1 wherein, The baking process is as follows: oven temperature 140-160℃, baking time 40-120 s, and air volume 70-80%.

3. A low formaldehyde, no fluoro, no-iron, single repellent, single finish process for woven fabrics as claimed in claim 1 wherein, The dry setting process is as follows: oven temperature 150-160℃, and drying time 24-50 s.

4. The low formaldehyde, no fluoro, no-iron, single repellent, single finish, single cure woven fabric process as claimed in claim 1, wherein, In the printing process, the waterproofing crosslinking agent is waterproofing crosslinking agent EXTENDER SFB, the thickening agent is thickening agent LAMBICOL L491, and the anti-seepage agent is anti-seepage agent FS-30.

5. The low formaldehyde, no fluoro, no-iron, single repellent, single finish, single cure woven fabric process as claimed in claim 1, wherein, The pretreatment of the woven fabric comprises the following steps: 1) singeing: flame intensity 10-20 mbar, singeing mode transparent or direct, and printing speed 80-120 m / min; 2) cold pad-batch: caustic soda NaOH 30-50 g / L, H2O2 9-15 g / L, cold pad-batch chelating finishing agent MAG 15-18 g / L, and stacking time 24 h; 3) washing and scouring: caustic soda NaOH 20-50 g / L, refining agent CRC 5-7 g / L, penetrating agent ZFC 6-8 g / L, chelating agent SQ-A 4-5 g / L, dewaxing agent SA-U 4-5 g / L, steaming box temperature 100℃, cloth stacking time 10-25 min, and printing speed 50-70 m / min; 4) mercerizing: caustic soda NaOH 160-300 g / L, concentrated alkali temperature 50-55℃, dilute alkali temperature 80-85℃, stable zone temperature 85-90℃, and printing speed 70-80 m / min; 5) dry setting: printing speed 30-50 m / min, and oven temperature 180-200℃.

6. A low formaldehyde, no fluoro, no-iron, single repellent, single finish process for woven fabrics as claimed in claim 1 wherein, The pretreatment of the woven fabric comprises the following steps: 1) singeing: flame intensity 20 mbar, singeing mode direct, and printing speed 120 m / min; 2) Desizing: Desizing enzyme OPT-280 4-6 g / L, penetrating agent MRZ 4-6 g / L, refining enzyme 601 L conc 2-4 g / L, extracting agent RED 4-6 g / L, steaming temperature 100 °C, padding time 15 min, speed 70 m / min; 3) Scouring: caustic soda 20-40 g / L, refining agent CRC 5-7 g / L, penetrating agent MRZ 5-7 g / L, chelating agent SQ-A 4-6 g / L, dewaxing agent SA-U 5-7 g / L, steaming temperature 100 °C, padding time 25 min, speed 70 m / min; 4) Oxygen bleaching: NaOH 1-2 g / L, H2O2 7-10 g / L, chelating agent SQ-A 8-10 g / L, penetrating agent WA-X 5-7 g / L, hydrogen peroxide stabilizer OUR-266 5-7 g / L, steaming temperature 100 °C, padding time 25 min, speed 60 m / min.

7. A low formaldehyde, no fluoro, no-iron, single repellent, single finish process for woven fabrics as claimed in claim 1 wherein, The pretreatment of the woven fabric comprises the following steps: 1) Singeing: flame intensity 20 mbar, singeing mode is through burning, speed 100 m / min; 2) Cold pad-batch: caustic soda NaOH 30-50 g / L, H2O2 9-15 g / L, cold pad-batch chelating agent MAG-L 15-18 g / L, standing time 24 h; 3) Washing scouring: caustic soda NaOH 20-50 g / L, refining agent CRC 5-7 g / L, penetrating agent ZFC 6-8 g / L, chelating agent SQ-A 4-5 g / L, dewaxing agent SA-U 4-5 g / L, steaming temperature 100 °C, padding time 10-25 min, speed 50-70 m / min; 4) Mercerizing: caustic soda NaOH 160-300 g / L, concentrated alkali temperature 50-55 °C, diluted alkali zone temperature 80-85 °C, stable zone temperature 85-90 °C, speed 70-80 m / min.

8. A low formaldehyde, no fluoro, no-iron, single repellent, single finish process for woven fabrics as claimed in claim 1, wherein, Dyeing is pad dry dyeing or cold pad batch dyeing.

9. A low formaldehyde, no fluoro, no-iron, single repellent, single finish process for woven fabrics as claimed in claim 8, wherein, Fixation is reduction continuous dyeing fixation or reactive continuous dyeing fixation.

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