Fabric spraying processing method

Abstract

The invention discloses a fabric spraying processing method, relates to the technical field of textile processing, and provides a fabric spraying processing method which is uniform in coating distribution, low in production cost and environment-friendly. Comprising the following steps: S1, fabric pretreatment; the fabric to be processed is cleaned and dried, and dust and impurities on the surface are removed; s2, spraying a functional coating; s2.1, spraying a functional coating on the fabric treated in the step S1, wherein the spraying liquid carrying amount of the functional coating is set to be 35-80%; s2.2, feeding the fabric treated in the step S2.1 into a compression roller, wherein the pressure of the compression roller is set to be 6-10 tons; s2.3, the fabric treated in the step S2.2 is subjected to pre-drying treatment through an infrared drying machine; s3, shaping and finishing; and performing heat setting on the fabric by using a setting machine.

Description

Technical Field

[0001] The invention relates to the technical field of textile processing, and in particular to a fabric spraying processing method. Background Art

[0002] With the rapid advancement of technology, consumers' demands for comprehensive clothing performance, such as comfort and specialized functionality, continue to rise. The functionality of clothing fabrics is often achieved during the finishing process after dyeing. Traditional impregnation processes present numerous drawbacks in this finishing process. Firstly, the large amount of residual liquid left in the impregnation tank after impregnation not only wastes resources and increases production costs, but also poses environmental risks. Secondly, the impregnation process is difficult to control for both fabric penetration and uniformity, making it difficult to meet market demand for high-quality clothing fabrics.

[0003] Spray coating technology, due to its advantages of high efficiency, precision, and material conservation, is widely used in traditional fields such as hardware, plastics, and shipbuilding. There are also attempts to apply spray coating technology to the finishing of clothing fabrics. However, traditional textiles are formed by interlacing yarns through knitting or weaving, and the density of the fabrics is generally insufficient, making the application of spray coating technology in fabric finishing difficult to control. This is especially true when different functions are required on both sides of the fabric. If the spray volume is too low, the functionality of the fabric on that side will be insufficient. If the spray volume is too high, the paint will adhere to the other side of the fabric through the pore structure, affecting the functional processing of the other side of the fabric.

[0004] Therefore, how to improve the textile finishing process and enhance the adaptability of spraying technology in the finishing of clothing fabrics is a technical problem that needs to be solved urgently. Summary of the Invention

[0005] In response to the above technical problems, the present invention provides a fabric spraying processing method with uniform coating distribution, low production cost and environmental friendliness.

[0006] The technical solution of the present invention is: A fabric spraying processing method comprises the following steps: S1: Fabric pretreatment: clean and dry the fabric to be processed to remove dust and impurities on the surface; S2: spraying functional coatings; S2.1: Spray the functional coating onto the fabric treated in step S1, with the spraying liquid volume of the functional coating set to 35-80%; S2.2: Feed the fabric processed in step S2.1 into a pressing roller, and set the pressure of the pressing roller to 6 to 10 tons; S2.3: Pre-dry the fabric treated in step S2.2 using an infrared dryer; S3: Setting and finishing; use a setting machine to heat-set the fabric.

[0007] In the step S2.1, the spraying processing speed is 30 to 60 m / min.

[0008] In step S2.1, the distance between the nozzle and the fabric is 10 to 20 cm.

[0009] In step S2.3, the voltage is set to 220-300V, and the distance between the lamp tube and the fabric is 30-40cm.

[0010] In step S3, the shaping temperature is set to 150-180° C., the processing speed is set to 30-60 m / min, and the air supply frequency of the fan is set to 18-32 Hz.

[0011] After step S2.3 and before step S3, another functional coating is applied to the fabric by dipping.

[0012] The fabric spraying processing method of the present invention effectively solves the problems of residual liquid waste and environmental pollution in the traditional dipping process through the innovative application of spraying technology in the finishing processing of clothing fabrics. At the same time, the spraying process makes it easier to control the uniformity of the coating on the fabric, so that the obtained fabric coating is evenly distributed and has small color difference, thereby improving the quality and efficiency of fabric finishing.

[0013] The method of the present invention only requires 64-75% of the amount of coating used in the traditional dipping process when coating the fabric in the form of spraying, and the production cost is significantly reduced. DETAILED DESCRIPTION

[0014] A fabric spraying processing method comprises the following steps: S1: Fabric Pretreatment: The fabric to be processed is cleaned and dried to remove surface dust and impurities, ensuring a clean and dry surface. Fabrics containing grease or wax require additional degreasing or dewaxing to improve the fabric's suitability for subsequent processing. S2: Spraying a functional coating, selecting coatings with various properties, such as waterproof, oil-proof, antibacterial, and softness, depending on the fabric's application. S2.1: Spray the functional coating onto the fabric treated in step S1, setting the spray volume to 35-80%. S2.2: Feed the fabric treated in step S2.1 into a press roller to wet the fabric and squeeze out any excess functional coating, setting the pressure of the press roller to 6-10 tons. S2.3: Pre-dry the fabric treated in step S2.2 using an infrared dryer. S3: Finishing: Heat-set the fabric using a setting machine to improve the stability of the coated fabric. In step S2.1, the spraying speed is 30-60 m / min. In step S2.1, the distance between the nozzle and the fabric is 10 to 20 cm. In step S2.3, the voltage is set to 220 to 300 V, and the distance between the lamp tube and the fabric is 30 to 40 cm. In step S3, the setting temperature is set to 150 to 180°C, the processing speed is set to 30 to 60 m / min, and the air supply frequency of the fan is set to 18 to 32 Hz. After step S2.3 and before step S3, another functional coating is applied to the fabric by dipping. For example, an antibacterial coating can be sprayed on one side of the fabric and a waterproof coating can be dipped on the other side, so that the fabric has both antibacterial and waterproof functions. Example 1

[0015] Weight 178g / m 2 5,000 m of polyester fabric were processed in batches. The dyed fabric was washed to remove surface color and impurities, then dried in a 125°C oven. A waterproofing agent was sprayed onto the dried fabric using a spraying machine, with the spray volume set at 35%. The spraying speed was set at 30 m / min, and the distance between the nozzle and the fabric was 20 cm. The sprayed fabric was fed through a pair of rollers, with a pressure of 10 tons. The pressure was used to fully wet the fabric and squeeze out any excess liquid. The rolled fabric was then pre-dried in an infrared dryer, with a voltage set at 300 V and a distance of 40 cm between the lamp and the fabric. The fabric was then heat-set in a setting machine, with a setting temperature of 180°C, a speed of 30 m / min, and an air frequency of 18 Hz. Testing showed that the coating surface was uniform, with color differences between the left, center, and right sides of the fabric within ΔE0.6. The waterproofing achieved a grade 4 or higher, demonstrating excellent waterproofing. The amount of waterproof coating used is 450L, of which the amount of waterproofing agent used is 36Kg. Example 2

[0016] Weight 68g / m 25,000 m of polyester fabric were processed in batches. The dyed fabric was washed to remove surface color and impurities, then dried in a 125°C oven. The dried fabric was sprayed with an antimicrobial coating using a spraying machine, with the coating concentration set at 45%. The spraying speed was set at 40 m / min, and the distance between the nozzle and the fabric was 15 cm. The sprayed fabric was fed through a pair of rollers, with a pressure of 8 tons, which were used to fully wet the fabric and squeeze out any excess liquid. The rolled fabric was then pre-dried in an infrared dryer, with a voltage set at 220 V and a distance of 35 cm between the lamp and the fabric. The fabric was then heat-set in a setting machine, with a setting temperature of 160°C, a processing speed of 40 m / min, and a fan frequency of 24 Hz. Testing showed that the coating surface was uniform, with a color difference of less than 0.6 ΔE between the left, center, and right sides of the fabric. The antibacterial rate against Staphylococcus aureus and Escherichia coli is ≥70%, demonstrating excellent antibacterial efficacy. The antibacterial coating dosage is 320L, of which 1.9Kg is the antibacterial agent. Example 3

[0017] Weight 49g / m 2 Polyester fabric is processed in batches of 5,000 m. The dyed fabric is washed to remove surface color and impurities, then dried in a 125°C oven. The dried fabric is sprayed with an antimicrobial coating using a spraying machine, with the coating concentration set at 65%. The spraying speed is set at 60 m / min, and the distance between the nozzle and the fabric is 10 cm. The sprayed fabric is fed through a pair of rollers, with a pressure of 6 tons, which are used to fully wet the fabric and squeeze out any excess liquid. The rolled fabric is then pre-dried in an infrared dryer, with a voltage set at 220 V and a distance of 30 cm between the lamp and the fabric. The pre-dried fabric is then fed into a waterproofing agent impregnation tank and then fed through a pair of rollers, with a pressure of 10 tons. After rolling, the fabric is heat-set using a setting machine, with a setting temperature of 150°C, a processing speed of 60 m / min, and a fan frequency of 32 Hz. Testing showed that the coating surface was uniform, with a color difference of less than 0.6 ΔE between the left, center, and right sides of the fabric. The Candida albicans inhibition rate was ≥60%, and the waterproof rating reached Level 3, demonstrating excellent antibacterial and waterproof properties. The amount of antibacterial coating used was 340L, and the amount of waterproof coating used was 340L. Example 4

[0018] Weight 49g / m 25,000 m of polyester fabric were processed in batches. The dyed fabric was washed to remove surface color and impurities, then dried in a 125°C oven. A waterproofing agent was sprayed onto the dried fabric using a spraying machine, with the spray volume set to 80%. The spraying speed was set at 50 m / min, and the distance between the nozzle and the fabric was 15 cm. The sprayed fabric was fed through a pair of rollers, with a pressure of 10 tons. The pressure was used to fully wet the fabric and squeeze out any excess liquid. The rolled fabric was then pre-dried in an infrared dryer, with a voltage set at 300 V and a distance of 30 cm between the lamp and the fabric. The fabric was then heat-set in a setting machine, with a setting temperature of 180°C, a speed of 50 m / min, and a fan frequency of 32 Hz. Testing showed that the coating surface was uniform, with color differences between the left, center, and right sides of the fabric within a delta E0.6. The waterproofing achieved a grade 4 or higher, demonstrating excellent waterproofing. The amount of waterproof coating used is 350L, of which 28Kg is the waterproofing agent. If the traditional dipping process is used to achieve the same waterproofing effect, 500L of waterproof coating is required, of which 40Kg is the waterproofing agent.

[0019] Comparative Example 1: Weight 178g / m 2 The polyester fabric is processed in batches of 5,000 m. The dyed fabric is washed to remove surface color and impurities, then dried in a 125°C oven. The dried fabric is then placed in a waterproofing agent impregnation tank and pressed by a pair of rollers at a pressure of 10 tons. After pressing, the fabric is heat-set in a setting machine, with a setting temperature of 180°C, a processing speed of 30 m / min, and an air supply frequency of 18 Hz.

[0020] Testing showed the fabric's coating surface was uniform, with no significant differences. The color difference between the left, center, and right sides of the fabric was within a delta E of 0.6. The waterproof rating was 4. The amount of waterproof coating used was 600L, including 48kg of waterproofing agent.

[0021] Comparative Example 2: Weight 68g / m 2 The dyed polyester fabric is processed in batches of 5,000 m. The dyed fabric is washed to remove surface color and impurities, then dried in a 125°C oven. The dried fabric is then impregnated with an antimicrobial coating and passed through a pair of rollers, applying a pressure of 10 tons. After rolling, the fabric is heat-set in a setting machine, set at a setting temperature of 180°C, a processing speed of 50 m / min, and a fan frequency of 25 Hz.

[0022] Testing showed that the coating surface was uniform, with no significant differences. The color difference between the left, center, and right sides of the fabric was within a delta E of 0.6. The inhibition rate against Staphylococcus aureus and Escherichia coli was ≥ 70%. The antimicrobial coating used was 500L, including 3kg of antimicrobial agent.

[0023] Regarding the contents disclosed in the present invention, the following points need to be explained: (1) The embodiments disclosed in the present invention are merely examples, and any technical solution implemented by other equivalent alternative technical means shall fall within the scope of protection of the present invention; (2) In the absence of conflict, the technical features disclosed in the present invention may be combined with each other to obtain new embodiments; The above are only specific implementation methods disclosed in the present invention, but the protection scope of the present invention is not limited thereto. Technical solutions obtained by those skilled in the art after modifying or transforming certain technical features based on the contents disclosed in the present invention should all fall within the protection scope of the present invention.

Claims

1. A fabric spraying method, characterized in that: The following steps are involved: S1: Fabric pretreatment: clean and dry the fabric to be processed to remove dust and impurities on the surface; S2: spraying functional coatings; S2.1: Spray the functional coating onto the fabric treated in step S1, with the spraying liquid volume of the functional coating set to 35-80%; S2.2: Feed the fabric processed in step S2.1 into a pressing roller, and set the pressure of the pressing roller to 6 to 10 tons; S2.3: Pre-dry the fabric treated in step S2.2 using an infrared dryer; S3: Setting and finishing; use a setting machine to heat-set the fabric.

2. A fabric spraying method according to claim 1, characterized in that: In the step S2.1, the spraying processing speed is 30 to 60 m / min.

3. A fabric spraying method according to claim 1, characterized in that: In step S2.1, the distance between the nozzle and the fabric is 10 to 20 cm.

4. A fabric spraying method according to claim 1, characterized in that: In step S2.3, the voltage is set to 220-300V, and the distance between the lamp tube and the fabric is 30-40cm.

5. The fabric spraying method according to claim 1, characterized in that: In step S3, the shaping temperature is set to 150-180° C., the processing speed is set to 30-60 m / min, and the air supply frequency of the fan is set to 18-32 Hz.

6. A fabric spraying method according to claim 1, characterized in that: After step S2.3 and before step S3, another functional coating is applied to the fabric by dipping.