Regenerated polyamide-polyester anti-splashing breathable composite sportswear fabric and preparation method thereof

Abstract

The invention discloses a regenerated polyamide-polyester anti-splashing breathable composite sportswear fabric and a preparation method thereof. The preparation method mainly comprises the following steps that shell fabric is placed on a warp knitting machine to be woven; the base cloth is placed on a weft knitting machine to be woven; the shell fabric gray fabric and the base fabric gray fabric are shrunk; pre-shaping the gray fabric of the shrunk shell fabric; the shrunk base cloth gray fabric is subjected to rinsing and pre-shaping; dyeing the grey cloth of the preset surface cloth; dyeing the pre-shaped base gray fabric; drying the dyed shell fabric gray fabric; shaping the dried shell fabric gray fabric and the dyed base fabric gray fabric; the shell fabric and the base fabric are attached, then a finished product is put into a constant-temperature room to stand for a certain time, and the regenerated polyamide-polyester anti-splashing breathable composite sportswear fabric is obtained. Due to unique yarn configuration and optimized production procedures, the fabric is soft, wear-resistant, good in air permeability and waterproofness and has the advantages of being resistant to washing and soaping.

Description

Technical Field

[0001] The invention relates to the field of fabrics, and in particular to a recycled nylon-polyester splash-proof and breathable composite sports fabric and a preparation method thereof. Background Art

[0002] Fluorine-free water repellent is a new type of waterproof material made of inorganic chemicals as the main raw materials. Unlike previous fluorocarbon waterproof materials, fluorine-free water repellent does not contain any fluoride and will not cause harm to the body or the environment. In practical applications, fluorine-free fabrics are often used for waterproof purposes such as outdoor sportswear, tents, backpacks, etc. Compared with traditional fluorocarbon waterproof fabrics, fluorine-free fabrics have better waterproof, breathable, and UV resistance. The principle of fluorine-free water repellent is to use electrostatic force to form a weak electrostatic field on the surface of clothing, shoes, etc., thereby achieving water and dirt resistance. When liquid substances enter the range of the electrostatic field, they will be rebounded by the electrostatic force, forming a "lotus leaf" effect.

[0003] The raw materials used are four groups of yarns: N 50 / 34 environmentally friendly matte FDY, 40D OP, T 75 / 72DTY environmentally friendly yarn and 20D OP. The special selection of raw materials determines that this fabric is destined to be extraordinary; in terms of technology, the six production processes of refining, pre-production, dyeing, drying, finished product shaping and bonding lay the foundation for the unique feel of the fabric; in terms of performance, this fabric feels soft and has excellent waterproofness and breathability. Summary of the invention

[0004] In order to solve the above technical problems, a technical solution adopted by the present invention is to provide a recycled nylon-polyester splash-proof breathable composite sports fabric and a preparation method thereof, the preparation method mainly comprising the following steps:

[0005] S1 Blank preparation: The surface fabric is made of environmentally friendly matte FDY and OP and is placed on a 40G warp knitting machine for weaving to obtain the surface fabric; the base fabric is made of environmentally friendly yarn and OP and is placed on a 34"*28G weft knitting machine for weft knitting plain weave to obtain the base fabric;

[0006] Preferably, the yarn of the surface fabric in step S1 is N 50 / 34 environmentally friendly matte FDY and 40DOP.

[0007] Preferably, in step S1, the yarn of the base fabric is T 75 / 72DTY environmentally friendly yarn and 20DOP.

[0008] Preferably, the weight of the surface fabric in step S1 is 155 g / m2, wherein, by mass percentage, 77% N 50 / 34 environmentally friendly matte FDY and 23% 40D OP.

[0009] Preferably, the weight of the base fabric in step S1 is 135 g / m2, wherein, by mass percentage, 91% is T 75 / 72DTY environmentally friendly yarn and 9% is 20D OP.

[0010] Improving the yarn configuration and weaving process of fabrics is a method to improve the moisture absorption and antibacterial properties of fabrics. The present invention preferably uses three yarns of spandex, polyester and acrylic, adopts innovative yarn configuration, and weaves them in warp knitting and weft knitting structures, which maintains the elasticity and softness of the fabric and has excellent waterproofness and breathability.

[0011] Spandex has good resilience and wrinkle resistance, which can improve the elasticity and durability of fabrics. It is also heat-resistant and not easy to deform. Polyester is light, soft, wear-resistant, easy to dry and wrinkle-resistant, and has good light and chemical resistance. Acrylic has excellent heat resistance and wear resistance. Through this innovative yarn configuration, the fabric can have the advantages of various yarns, such as softness, waterproofness, wear resistance and elasticity. At the same time, by using warp knitting and weft knitting structures for weaving, the breathability and comfort of the fabric can be improved, making the fabric more suitable for occasions that require comfort, such as clothing.

[0012] Preferably, a method for preparing a recycled nylon-polyester splash-proof breathable composite sports fabric further comprises the following steps:

[0013] S2 refining: refining the surface fabric obtained in step S1, and adding emulsifying scouring agent C-15MSDS and Hetai HT-67 chelating dispersant to obtain a refined surface fabric; refining the base fabric obtained in step S1, and adding emulsifying scouring agent C-15MSDS and Hetai HT-67 chelating dispersant to obtain a refined base fabric;

[0014] S3 pre-setting: pre-setting the shrunk surface fabric obtained in step S2 in a micro-shrinkage and partial-medium shrinkage stretching state, and adding Weiming NY-525 nylon high temperature yellowing resistance agent to obtain a pre-set surface fabric; pre-setting the shrunk bottom fabric obtained in step S2 in a micro-stretching and shrinking stretching state through water to obtain a pre-set bottom fabric;

[0015] S4 dyeing: dyeing the predetermined shape surface fabric obtained in step S3, then fixing and soaping, adding acidic color fixing agent ABS (anion) and soaping adding TDS-dispersant (Tonara) to obtain dyed surface fabric; dyeing the predetermined shape base fabric obtained in step S3, then reduction washing, adding high concentration of caustic soda, hydrosulfite and citric acid to obtain dyed base fabric;

[0016] S5 drying: drying the dyed surface cloth obtained in step S4 in a micro-shrinking and stretching state to obtain a dried surface cloth;

[0017] S6: Finished product shaping: shaping the dried surface fabric obtained in step S5 in a micro-shrinking and stretching state, and adding Huntsman R3 fluorine-free water repellent and Huntsman SFB waterproof bridging agent to obtain the surface fabric; shaping the dyed base fabric obtained in step S4 in a flat micro-shrinking and stretching state, and adding citric acid to obtain the base fabric;

[0018] S7 bonding: bonding the surface fabric and the base fabric obtained in step S6 using a TMG120 carving wheel, and then placing the finished product in a constant temperature room for a certain period of time, and testing and quality inspection to obtain the recycled nylon-polyester splash-proof and breathable composite sports fabric.

[0019] Preferably, the process conditions for refining the facing cloth in step S2 are: refining at a temperature of 85° C. and a speed of 24 m / min.

[0020] Preferably, the process conditions for refining the base fabric in step S2 are: refining at a temperature of 75° C. and a speed of 24 m / min.

[0021] Preferably, the process parameters for pre-forming the refined surface cloth in step S3 are: speed 20m / min, air volume 65%, cloth feeding wheel 3%, overfeeding cloth wheel 4%, upper pin wheel left and right 10%, balance tension 53N, pressure roller pressure 4kg, wherein among the 9-section oven used, the temperature of sections 1-2 and 9 is 190°C, and the temperature of sections 3-8 is 200°C.

[0022] Preferably, the process parameters for pre-forming the refined base fabric in step S3 are: speed 20m / min, air volume 62 / 65HZ, cloth feeding wheel 3%, overfeeding cloth wheel 11%, upper pin wheel left and right 10%, balance tension 50kg, pressure roller pressure 4kg, wherein among the 9-section oven used, the temperature of sections 1-2 and 9 is 190°C, and the temperature of sections 3-8 is 195°C.

[0023] Preferably, the process parameters for dyeing the predetermined profile fabric in step S4 are: main pump speed 880 r / min, cloth pulley speed 560 r / min.

[0024] Preferably, the process parameters for dyeing the predetermined base fabric in step S4 are: main pump speed 1000r / min, cloth pulley speed 720r / min.

[0025] Preferably, the process parameters for drying the dyed surface cloth in step S5 are: speed 20m / min, air volume 35%, cloth feeding wheel 6%, overfeeding cloth wheel 28%, upper pin wheel left and right 15%, balance tension 2kg, pressure roller pressure 4kg, wherein among the 10-section oven used, the temperature of sections 1-2 and 10 is 160°C, and the temperature of sections 3-9 is 170°C.

[0026] Preferably, the process parameters for finalizing the dried surface cloth in step S6 are: speed 18-22 m / min, air volume 30-40 Hz, cloth feeding wheel 3%, overfeeding cloth wheel 11%, upper pin wheel left and right 18%, balance tension 2 kg, pressure roller pressure 2 kg, wherein among the 10-section oven used, the temperature of sections 1-3 and 10 is 160°C, and the temperature of sections 4-9 is 170°C.

[0027] Preferably, the process parameters for finalizing the dyed base fabric in step S6 are: speed 18-22 m / min, air volume 40 Hz, cloth feeding wheel 4%, overfeeding cloth wheel 29%, upper needle wheel left and right 16%, balance tension 2 kg, pressure roller pressure 4 kg, wherein among the 10-section oven used, the temperature of sections 1-3 and 10 is 140°C, and the temperature of sections 4-9 is 150°C.

[0028] Preferably, the process parameters of the bonding in step S7 are: glue temperature 109-111°C, glue amount range 17.6-20.3g / m2, constant temperature room temperature 25-29°C, and standing time not less than 120 hours.

[0029] Preferably, in step S2, the amount of the auxiliary agent used in the shrinking of the surface cloth is: emulsifying scouring agent C-15MSDS 4g / L, Hetai HT-67 chelating dispersant 1g / L.

[0030] Preferably, in step S2, the dosage of the auxiliary agent for refining the base fabric is: 2 g / L of emulsifying scouring agent C-15MSDS and 1 g / L of Hetai HT-67 chelating dispersant.

[0031] Preferably, in step S3, the dosage of the auxiliary agent for pre-forming the shrunken surface cloth is: 4% of high temperature yellowing resistance agent for Weimin NY-525 nylon.

[0032] Preferably, in step S4, the dosage of the auxiliary agent for dyeing the predetermined profile fabric is: 5 g / L of acidic color fixing agent ABS (anion) and 0.5 g / L of TDS-dispersant (Tano) .

[0033] Preferably, in step S4, the dosage of the auxiliary agent for dyeing the predetermined base fabric is: 1.5 g / L high concentration caustic soda, 4 g / L hydrosulfur powder and 0.3 g / L citric acid.

[0034] Preferably, in step S6, the dosage of the auxiliary agent for finalizing the dried surface cloth is: 8% of Huntsman R3 fluorine-free water repellent and 2% of Huntsman SFB waterproof bridging agent.

[0035] Preferably, in step S6, the dosage of the auxiliary agent for finalizing the dyed base fabric is: 0.1% citric acid.

[0036] Preferably, the dyes and dosages of the predetermined profile fabric are: 0.5 g / L of acid dyeing conditioner, 0.7 g / L of glacial acetic acid, 0.45 g / L of BESTALAN YELLOW SFN, 0.65 g / L of ACERLAN OEANGE-XF and 1.35 g / L of ACERLAN BLACKDM-GB.

[0037] Preferably, the dyes and dosages of the predetermined base fabric are: ERIOPON E3-SAVE polyester process enhancer 0.7%, high-efficiency degreasing agent CPA 1g / L, multifunctional acid MAC-B 0.5g / L, deep red PUD-SD bs 0.415, navy blue P-D 1.2963% and disperse black BLACK SF-R bs 1.08g / L.

[0038] In addition, optimizing the dyeing and finishing process of the fabric can also further improve the comprehensive properties of the fabric such as waterproof, breathable, abrasion-resistant, water-washable and soap-resistant. The present invention improves the waterproof, breathable, abrasion-resistant, water-washable and soap-resistant properties of the fabric by adding specific auxiliaries during the dyeing and finishing process based on the adoption of a new yarn configuration and warp knitting and weft knitting structure weaving process.

[0039] The present invention also provides a recycled nylon-polyester splash-proof and breathable composite sports fabric, which is prepared by the above method.

[0040] The beneficial effects of the present invention are as follows:

[0041] 1. The fabric of the present invention has waterproof and breathable functions, the base fabric has a certain water absorption, and the surface fabric is water-repellent, so that the laminated finished product is very dry and comfortable to wear and can easily cope with various different sports environments.

[0042] 2. The present invention adopts unique yarn configuration, warp knitting and weft knitting structure weaving and dyeing and finishing technology. The prepared fabric is soft, elastic, and friction-resistant. It also has the advantages of being resistant to water washing and soap washing and is comfortable to wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 This is a schematic diagram of the structure of the surface cloth of the present invention;

[0044] Figure 2 It is a schematic diagram of the weft-knitted plain weave structure of the present invention. DETAILED DESCRIPTION

[0045] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0046] Example 1

[0047] A method for preparing a recycled nylon-polyester splash-proof and breathable composite sports fabric is as follows:

[0048] S1 preparation: The surface fabric is made of N 50 / 34 environmentally friendly matte FDY and 40D OP and placed on a 40G warp knitting machine. Figure 1 The surface fabric structure shown in the figure is woven, and the base fabric is made of T 75 / 72DTY environmentally friendly yarn and 20D OP and placed on a 34"*28G weft knitting machine. Figure 2 The weft-knitted plain weave structure shown in the figure is woven to obtain a surface fabric with a gram weight of 155 g / m2, wherein 77% of the N 50 / 34 environmentally friendly matte FDY and 23% of the 40D OP; a base fabric with a gram weight of 135 g / m2, wherein 91% of the T 75 / 72DTY environmentally friendly yarn and 9% of the 20D OP;

[0049] S2 refining: the surface fabric obtained in step S1 is refined at a temperature of 85°C and a speed of 24m / min, and an auxiliary agent is added to obtain a refined surface fabric; the base fabric obtained in step S1 is refined at a temperature of 75°C and a speed of 24m / min, and an auxiliary agent is added to obtain a refined base fabric; the surface fabric is refined, and the auxiliary agent and the amount thereof are 4g / L of emulsifying scouring agent C-15MSDS and 1g / L of Hetai HT-67 chelating dispersant; the base fabric is refined, and the auxiliary agent and the amount thereof are 2g / L of emulsifying scouring agent C-15MSDS and 1g / L of Hetai HT-67 chelating dispersant;

[0050] S3 pre-forming: pre-forming the shrunk surface fabric obtained in step S2 in a micro-shrinkage and partial-center shrinkage stretching state at a speed of 20m / min, an air volume of 65%, a cloth feeding wheel of 3%, an overfeeding wheel of 4%, an upper pin wheel of 10%, a balance tension of 53N, and a pressure roller pressure of 4kg, while adding an auxiliary agent to obtain a predetermined shaped surface fabric, wherein the temperature of the 1st to 2nd and 9th sections of the 9-section oven is 190°C, and the temperature of the 3rd to 8th sections is 200°C; the shrunk bottom fabric obtained in step S2 is pre-formed at a speed of 20m / min, an air volume of 65%, a cloth feeding wheel of 3%, an overfeeding wheel of 4%, an upper pin wheel of 10%, a balance tension of 53N, and a pressure roller pressure of 4kg. In the micro-stretching and shrinking state, the speed is 20m / min, the air volume is 62 / 65HZ, the cloth feeding wheel is 3%, the overfeeding cloth wheel is 11%, the upper needle wheel is 10%, the balance tension is 50kg, and the pressure of the pressure roller is 4kg. The pre-shaped base fabric is obtained, wherein the temperature of the 1st to 2nd and 9th sections of the 9-section oven is 190°C, and the temperature of the 3rd to 8th sections is 195°C; the auxiliary agent and the dosage of the pre-shaped shrinking surface fabric are 4% of Weiming NY-525 nylon high temperature yellowing agent;

[0051] S4 dyeing: dyeing the predetermined surface fabric obtained in step S3 at a main pump speed of 880r / min and a cloth wheel speed of 560r / min, then fixing and soaping, and adding auxiliaries to obtain dyed surface fabric; dyeing the predetermined bottom fabric obtained in step S3 at a main pump speed of 1000r / min and a cloth wheel speed of 720r / min, then reduction washing, and adding auxiliaries to obtain dyed bottom fabric; dyeing the predetermined surface fabric with the auxiliaries and dosage of acidic color fixing agent ABS (anion) 5g / L, adding TDS-dispersant (Tonara) 0.5g / L; dyeing the predetermined bottom fabric with the auxiliaries and dosage of high concentration caustic soda 1.5g / L, insurance powder 4g / L and citric acid 0.3g / L; the dye of the predetermined surface fabric is composed of acidic dyeing conditioner 0.5g / L, glacial acetic acid 0.7g / L, BESTALAN YELLOW SFN The dye of the predetermined base fabric is composed of 0.7% ERIOPONE3-SAVE polyester process synergist, 1g / L high-efficiency degreasing agent CPA, 0.5g / L multifunctional acid MAC-B, 0.415 deep red PUD-SDbs, 1.2963% navy blue PD and 1.08g / L disperse black BLACK SF-R bs.

[0052] S5 drying: drying the dyed surface fabric obtained in step S4 in a micro-shrinking and stretching state at a speed of 20 m / min, an air volume of 35%, a cloth feeding wheel of 6%, an overfeeding cloth wheel of 28%, an upper pin wheel of 15%, a balance tension of 2 kg, and a pressure roller of 4 kg to obtain a dried surface fabric, wherein the temperature of the 10-section oven used is 160° C. for sections 1-2 and 10, and the temperature of sections 3-9 is 170° C.;

[0053] S6 finished product shaping: the dried surface cloth obtained in step S5 is shaped in a micro-shrinking and stretching state at a speed of 18-22m / min, an air volume of 30-40HZ, a cloth feeding wheel of 3%, an overfeeding cloth wheel of 11%, an upper pin wheel of 18%, a balance tension of 2kg, and a pressure roller of 2kg, and an auxiliary agent is added to obtain the surface cloth, wherein the temperature of the 10-section oven used is 160°C for the 1st to 3rd and 10th sections, and the temperature of the 4th to 9th sections is 170°C; the dyed bottom cloth obtained in step S4 is shaped in a micro-shrinking and stretching state at a speed of 18-22 m / min, air volume 40HZ, cloth feeding wheel 4%, overfeeding wheel 29%, upper pin wheel left and right 16%, balance tension 2kg, pressure roller pressure 4kg, shaping, adding auxiliary agent at the same time, to obtain base fabric, wherein in the 10-section oven used, the temperature of sections 1-3 and 10 is 140°C, and the temperature of sections 4-9 is 150°C; the auxiliary agent and the dosage of Huntsman R3 fluorine-free water-repellent 8% and Huntsman SFB waterproof bridging agent 2% are used to shape the dried surface fabric; the auxiliary agent and the dosage of citric acid 0.1% are used to shape the dyed base fabric;

[0054] S7 bonding: the surface fabric and the base fabric obtained in step S6 are bonded using a TMG120 carving wheel at a glue temperature of 109-111°C and a glue amount of 17.6-20.3 g / m2, and then the finished product is placed in a constant temperature chamber at a temperature of 25-29°C and allowed to stand for more than 120 hours. The recycled nylon-polyester splash-proof and breathable composite sports fabric is obtained after passing the test and quality inspection.

[0055] Test Example 1

[0056] Bursting performance: The fabrics prepared in the above examples were tested according to GB / T 19976-2005 "Determination of bursting strength of textiles - Steel ball method". The higher the bursting strength, the better the bursting performance of the fabric.

[0057] Table 1 Bursting performance of fabrics

[0058] Bursting strength, N Example 1 1048

[0059] Test Example 2

[0060] Air permeability: The fabrics prepared in the above examples were tested according to GB / T 5453-1997 "Determination of air permeability of textile fabrics". The higher the air permeability, the better the air permeability of the fabric.

[0061] Table 2 Breathability of fabrics

[0062] Air permeability, mm / s Example 1 226.0

[0063] Test Example 3

[0064] Pilling performance: The fabrics prepared in the above examples were tested according to GB / T 4802.1-2008 "Determination of the pilling performance of textile fabrics Part 1: Circular locus method". The higher the pilling grade, the better the pilling performance of the fabric.

[0065] Table 3 Pilling performance of fabrics

[0066] Pilling, Grade Example 1 4-5

[0067] Test Example 4

[0068] Friction resistance: The fabrics prepared in the above examples were tested according to GB / T 3920-2008 "Textiles - Tests for Colour Fastness - Friction Fastness". The higher the friction fastness, the better the friction resistance of the fabric.

[0069] Table 4 Friction resistance of fabrics

[0070]

[0071] Test Example 5

[0072] Washing resistance: The fabrics prepared in the above examples were tested according to GB / T 8628-2013 "Preparation, marking and measurement of fabric specimens and garments for testing dimensional changes of textiles", GB / T 8629-2017 "Household washing and drying procedures for testing textiles", and GB / T8630-2013 "Determination of dimensional changes of textiles after washing and drying". The lower the washing dimensional change rate, the better the washing resistance of the fabric.

[0073] Table 5 Washability of fabrics

[0074]

[0075]

[0076] Test Example 6

[0077] Waterproof performance: The fabric prepared in the above embodiment was tested according to GB / T 4745-2012 "Testing and evaluating the waterproof performance of textiles - water-wetting method". The higher the water-wetting property, the better the waterproof performance of the fabric.

[0078] Table 6 Waterproof performance of fabrics

[0079] Water resistance, grade Example 1 4-5

[0080] Test Example 7

[0081] Soap-resistant performance: The fabrics prepared in the above examples were tested according to GB / T 3921-2008 "Textiles - Tests for Colour Fastness - Colour Fastness to Soap-resistant Performance". The higher the colour fastness to soap-resistant performance, the better the fabric's soap-resistant performance.

[0082] Table 7 Soap resistance of fabrics

[0083]

[0084] The invention adopts innovative yarn configuration and warp knitting and weft knitting structure weaving processes based on the optimization of three kinds of yarns, spandex, polyester and acrylic, and obtains the fabric through a specific dyeing and finishing process. The fabric not only has good waterproof and breathable properties, but also has excellent wear resistance, water washing resistance and soap washing resistance.

[0085] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for preparing a recycled nylon-polyester splash-proof breathable composite sports fabric, characterized in that: The preparation method comprises the following steps: S1 Blank preparation: The surface fabric is made of environmentally friendly matte FDY and OP and is placed on a 40G warp knitting machine for weaving to obtain the surface fabric; the base fabric is made of environmentally friendly yarn and OP and is placed on a 34"*28G weft knitting machine for weft knitting plain weave to obtain the base fabric; S2: refining the surface fabric obtained in step S1, and adding an auxiliary agent to obtain a refined surface fabric; refining the base fabric obtained in step S1, and adding an auxiliary agent to obtain a refined base fabric; S3 pre-forming: pre-forming the shrunk surface fabric obtained in step S2 in a micro-shrinkage and partial-center shrinkage and stretching state, and adding an auxiliary agent to obtain a predetermined-shaped surface fabric; pre-forming the shrunk bottom fabric obtained in step S2 in a micro-stretching and shrinking state through water to obtain a predetermined-shaped bottom fabric; S4 dyeing: dyeing the predetermined shape surface fabric obtained in step S3, then fixing and soaping, and adding auxiliaries to obtain dyed surface fabric; dyeing the predetermined shape base fabric obtained in step S3, then reduction washing, and adding auxiliaries to obtain dyed base fabric; S5 drying: drying the dyed surface cloth obtained in step S4 in a micro-shrinking and stretching state to obtain a dried surface cloth; S6: Finished product shaping: shaping the dried surface fabric obtained in step S5 in a micro-shrinking and stretching state, and adding an auxiliary agent to obtain a surface fabric; shaping the dyed base fabric obtained in step S4 in a flat micro-shrinking and stretching state, and adding an auxiliary agent to obtain a base fabric; S7 bonding: bonding the surface fabric and the base fabric obtained in step S6 using a TMG120 carving wheel, and then placing the finished product in a constant temperature room for a certain period of time, and testing and quality inspection to obtain the recycled nylon-polyester splash-proof and breathable composite sports fabric.

2. The method for preparing the recycled nylon-polyester splash-proof breathable composite sports fabric according to claim 1, characterized in that: The configuration of the surface fabric yarn in step S1 is: N 50 / 34 environmentally friendly matte FDY and 40D OP; the configuration of the base fabric yarn in step S1 is: T75 / 72DTY environmentally friendly yarn and 20D OP; the gram weight of the surface fabric grey cloth obtained in step S1 is 155g / m2; among them, 77% N 50 / 34 environmentally friendly matte FDY and 23% 40D OP; the gram weight of the base fabric grey cloth obtained in step S1 is 135g / m2; among them, 91% T 75 / 72DTY environmentally friendly yarn and 9% 20D OP.

3. The method for preparing the recycled nylon-polyester splash-proof breathable composite sports fabric according to claim 1, characterized in that: The process conditions for refining the surface fabric in step S2 are: refining at a temperature of 85° C. and a speed of 24 m / min, while adding 4 g / L of emulsifying scouring agent C-15MSDS and 1 g / L of Hetai HT-67 chelating dispersant; the process conditions for refining the base fabric in step S2 are: refining at a temperature of 75° C. and a speed of 24 m / min, while adding 2 g / L of emulsifying scouring agent C-15MSDS and 1 g / L of Hetai HT-67 chelating dispersant.

4. The method for preparing the recycled nylon-polyester splash-proof breathable composite sports fabric according to claim 1, characterized in that: The process parameters for pre-forming the refined surface cloth in step S3 are: speed 20m / min, air volume 65%, cloth feeding wheel 3%, overfeeding wheel 4%, upper pin wheel left and right 10%, balance tension 53N, pressure roller pressure 4kg, wherein in the 9-section oven used, the temperature of sections 1-2 and 9 is 190°C, the temperature of sections 3-8 is 200°C, and the auxiliary agent and dosage are 4% of Weiming NY-525 nylon high temperature yellowing agent; the process parameters for pre-forming the refined bottom cloth in step S3 are: speed 20m / min, air volume 62 / 65HZ, cloth feeding wheel 3%, overfeeding wheel 11%, upper pin wheel left and right 10%, balance tension 50kg, pressure roller pressure 4kg, wherein in the 9-section oven used, the temperature of sections 1-2 and 9 is 190°C, and the temperature of sections 3-8 is 195°C.

5. The method for preparing the recycled nylon-polyester splash-proof breathable composite sports fabric according to claim 1, characterized in that: The process parameters for dyeing the predetermined shaped surface cloth in step S4 are: main pump speed 880r / min, cloth wheel speed 560r / min, adding 5g / L of acidic color fixing agent ABS (anion) for color fixation, and adding 0.5g / L of TDS-dispersant (Tonara) for soap washing; the process parameters for dyeing the predetermined shaped bottom cloth in step S4 are: main pump speed 1000r / min, cloth wheel speed 720r / min, and adding 1.5g / L of high concentration flake caustic soda, 4g / L of insurance powder and 0.3g / L of citric acid for reduction washing.

6. The method for preparing the recycled nylon-polyester splash-proof breathable composite sports fabric according to claim 1, characterized in that: The process parameters for drying the dyed surface cloth in step S5 are: speed 20m / min, air volume 35%, cloth feeding wheel 6%, overfeeding wheel 28%, upper pin wheel left and right 15%, balance tension 2kg, pressure roller pressure 4kg, wherein in the 10-section oven used, the temperature of sections 1-2 and 10 is 160°C, and the temperature of sections 3-9 is 170°C.

7. The method for preparing the recycled nylon-polyester splash-proof breathable composite sports fabric according to claim 1, characterized in that: The process parameters of step S6 for finalizing the dried surface cloth are: speed 18-22m / min, air volume 30-40HZ, cloth feeding wheel 3%, overfeeding cloth wheel 11%, upper pin wheel left and right 18%, balance tension 2kg, pressure roller 2kg, and adding Huntsman R3 fluorine-free water repellent 8% and Huntsman SFB waterproof bridging agent 2% at the same time. Among the 10 sections of the oven used, the temperature of sections 1-3 and 10 is 160°C, and the temperature of section 4 is 160°C. -9 section temperature is 170 ℃; the process parameters of step S6 for finalizing the dyed base fabric are: speed 18-22m / min, air volume 40HZ, cloth feeding wheel 4%, overfeeding cloth wheel 29%, upper pin wheel left and right 16%, balance tension 2kg, pressure roller 4kg, and adding citric acid 0.1%, wherein in the 10-section oven used, the temperature of sections 1-3 and 10 is 140 ℃, and the temperature of sections 4-9 is 150 ℃.

8. The method for preparing the recycled nylon-polyester splash-proof breathable composite sports fabric according to claim 1, characterized in that: The process parameters of the bonding in step S7 are: glue temperature 109-111° C., glue amount range 17.6-20.3 g / m2, constant temperature room temperature 25-29° C., and standing time not less than 120 hours.

9. The method for preparing the recycled nylon-polyester splash-proof breathable composite sports fabric according to claim 1, characterized in that: The dyes of the predetermined shaped surface fabric are composed of 0.5 g / L of acid dyeing conditioner, 0.7 g / L of glacial acetic acid, 0.45 g / L of BESTALAN YELLOW SFN, 0.65 g / L of ACERLAN OEANGE-XF and 1.35 g / L of ACERLAN BLACK DM-GB; the dyes of the predetermined shaped base fabric are composed of 0.7% of ERIOPON E3-SAVE polyester process enhancer, 1 g / L of high-efficiency degreasing agent CPA, 0.5 g / L of multifunctional acid MAC-B, 0.415% of deep red PUD-SD bs, 1.2963% of navy blue PD and 1.08 g / L of disperse black BLACK SF-R bs.

10. A recycled nylon-polyester splash-proof breathable composite sports fabric, characterized in that: Prepared by the method according to any one of claims 1 to 9.

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