Manufacturing method of scratch-resistant and solvent-resistant screen cloth

Abstract

The invention relates to the technical field of screen cloth manufacturing, in particular to a manufacturing method of scratch-resistant solvent-resistant screen cloth, which comprises the following steps: step 1, preparing raw materials; step 2, pre-treating the screen cloth base material; step 3, putting the pretreated screen cloth into a prepared water-based dye solution for dyeing treatment; 4, a fluorescent agent is mixed into water-based gloss oil, so that the fluorescent agent is firmly attached to the screen cloth, and the fluorescent effect of the screen cloth is enhanced; and 5, adding a curing agent into the water-based gloss oil, uniformly stirring to prepare a scratch-resistant and solvent-resistant coating solution, and feeding the screen cloth coated with the scratch-resistant and solvent-resistant coating solution into curing equipment for curing treatment. According to the manufacturing method of the scratch-resistant and solvent-resistant screen cloth, water-based gloss oil is adopted, strict curing treatment is performed, a stable protective film structure with good performance is formed, environment-friendly water-based dye is adopted for dyeing, and color fixing treatment is performed in cooperation with an environment-friendly color fixing agent.

Description

Technical Field

[0001] The invention relates to the technical field of mesh cloth manufacturing, in particular to a method for manufacturing a scratch-resistant and solvent-resistant mesh cloth. Background Art

[0002] In the existing mesh fabric manufacturing field, as various industries continue to increase their requirements for mesh fabric performance, traditional mesh fabric manufacturing methods have gradually exposed many shortcomings. On the one hand, mesh fabrics are easily scratched during use, affecting their appearance and service life. At the same time, they have poor tolerance to some common solvents and may discolor or deform after contact with solvents, limiting their application range. On the other hand, the color fastness of mesh fabrics is often not ideal. When used for a long time or affected by external factors, they are prone to fading. Moreover, for specific application scenarios that require fluorescent effects, it is difficult to achieve satisfactory fluorescence intensity and durability. Summary of the invention

[0003] 1. Technical issues to be solved

[0004] In view of the deficiencies in the prior art, the present invention provides a method for manufacturing a scratch-resistant and solvent-resistant mesh cloth.

[0005] (II) Technical solution

[0006] To achieve the above object, the present invention provides the following technical solutions: 1. A method for manufacturing a scratch-resistant and solvent-resistant mesh cloth, comprising the following steps:

[0007] Step 1: Prepare raw materials, including preparing mesh substrate and water-based dye;

[0008] Step 2: Pre-treat the mesh substrate. Place the selected polyester fiber mesh substrate in a dedicated cleaning device and use deionized water and mild detergent to clean it to remove oil, dust and other impurities on the surface of the mesh. Then place the cleaned mesh in a drying device for pre-drying to ensure that the mesh is in a good dry state to avoid moisture from having adverse effects on subsequent dyeing, coating and other processes.

[0009] Step 3, placing the pretreated mesh into the prepared aqueous dye solution for dyeing, and stirring or circulating the dye solution in time to ensure that the mesh can be evenly colored, improve the consistency of the dyeing effect, and obtain the mesh of the desired color. After the dyeing is completed, the mesh is fixed with a color fixing agent. The mesh is immersed in a solution containing an appropriate amount of the color fixing agent. Through the interaction between the color fixing agent and the dye molecules, the adhesion of the dye on the mesh fiber is enhanced, and the color fastness of the mesh is improved, so that it is not easy to fade during subsequent use;

[0010] Step 4: Mix the fluorescent agent into the water-based varnish to form a varnish mixture containing the fluorescent agent, and evenly apply the varnish mixture containing the fluorescent agent on the surface of the dyed and fixed mesh through a coating device, so that the fluorescent agent is firmly attached to the mesh to enhance the fluorescence effect of the mesh;

[0011] Step 5, adding a curing agent to the aqueous varnish and stirring evenly to prepare a scratch-resistant and solvent-resistant coating liquid, uniformly coating the scratch-resistant and solvent-resistant coating liquid on the surface of the mesh cloth treated with fluorescence, and sending the mesh cloth coated with the scratch-resistant and solvent-resistant coating liquid into a curing device for curing treatment;

[0012] Step 6, the mesh cloth after the coating curing treatment is processed by a three-plate machine with a 40-mesh surface. During the processing, a drying operation is performed simultaneously to ensure that the mesh cloth remains dry after the processing;

[0013] Step 7: Pack the processed materials.

[0014] Preferably, in step 2, start the cleaning machine, set the cleaning temperature to 30-50°C, and the cleaning time to 5-20 minutes. During the cleaning process, maintain appropriate water circulation and stirring so that all parts of the mesh can fully contact the cleaning liquid to remove impurities such as oil, dust, etc. on the surface. After cleaning, switch the cleaning machine to the rinsing mode and use a large amount of clean water to rinse the mesh for no less than 3 times until the rinsed water is clear and free of impurities, ensuring that the surface of the mesh is completely clean;

[0015] Take the cleaned mesh out of the cleaning machine, drain the excess water, and put it into the hot air circulation drying box for pre-drying. Set the temperature of the drying box to 70-90℃, and the drying time to 10-30 minutes. The temperature sensor and wind speed adjustment device in the drying box ensure that the temperature in the drying box is evenly distributed, so that the moisture content of the mesh is reduced to about 3-8%, achieving a good drying state, which is convenient for the smooth progress of the subsequent dyeing process.

[0016] Preferably, in step 3, the mesh is slowly placed in the prepared aqueous dye solution to ensure that the mesh is completely immersed in the dye solution, and then the dye solution is heated to 50-70°C, and a dye solution circulation pump is used to keep the dye solution in a moderate circulation flow, and the dyeing time is controlled to be 15-45 minutes. During this period, the mesh is turned over in time to ensure that all parts of the mesh can be evenly colored. After dyeing is completed, the mesh is taken out of the dye solution and briefly rinsed in clean water to remove the unfixed dye remaining on the surface;

[0017] Prepare the color fixing agent solution. According to the product instructions of the color fixing agent, accurately weigh an appropriate amount of environmentally friendly color fixing agent, dissolve it in water, and prepare a color fixing agent solution with a concentration of 1-5%. Put the rinsed mesh into the color fixing agent solution, set the soaking time to 5-20 minutes, and keep the treatment temperature at 40-60℃. Through soaking, the color fixing agent is fully combined with the dye molecules on the mesh to enhance color fastness. After soaking, take out the mesh, rinse it with clean water, and remove the excess color fixing agent solution on the surface.

[0018] Preferably, in step 4, the fluorescent agent is accurately weighed according to 1-3% of the weight of the mesh, and then slowly added to the aqueous varnish on the unfolded area of ​​the mesh, and stirred at a speed of 500-2000 rpm for 5-20 minutes using a high-speed disperser to ensure that the fluorescent agent is evenly dispersed in the aqueous varnish to prepare a varnish mixture containing the fluorescent agent;

[0019] Pour the varnish mixture containing fluorescent agent into the material tank of the coating machine, adjust the parameters such as the scraper gap and coating speed of the coating machine, so that the varnish mixture can be evenly coated on the surface of the dyed and fixed mesh cloth, and control the coating thickness to be 5-20 microns. After coating, send the mesh cloth into the constant temperature drying tunnel, set the drying temperature to 90-110℃, and the drying time to 5-20 minutes, so that the fluorescent agent is firmly attached to the mesh cloth through the curing effect of the varnish, and enhance the fluorescence effect of the mesh cloth.

[0020] Preferably, in step 5, an environmentally friendly curing agent adapted thereto is accurately weighed according to 1-8% of the weight of the water-based varnish, the curing agent is slowly added to the water-based varnish, and an electric stirrer is used to stir at a speed of 600-100 rpm for 5-20 minutes to fully stir and evenly prepare a scratch-resistant and solvent-resistant coating liquid, ensuring that the curing agent and the water-based varnish are fully mixed;

[0021] Pour the scratch-resistant and solvent-resistant coating liquid into the material tank of another coating machine, and evenly coat the coating liquid on the surface of the fluorescent-treated mesh cloth. Control the coating thickness to 5-20 microns to ensure that the surface of the mesh cloth is completely covered by the coating to form a continuous and uniform protective film.

[0022] The mesh coated with the scratch-resistant and solvent-resistant coating liquid is sent into a UV curing machine with a curing temperature of 50-70°C and a curing time of 5-10 minutes to fully cure the coating and form a stable protective film structure.

[0023] Preferably, in step 6, a drying device matched with the three-plate machine is started, and the drying temperature is set to 80-100° C. and the drying time is set to 10-15 minutes to ensure that the mesh remains dry after treatment.

[0024] (III) Beneficial effects

[0025] Compared with the prior art, the present invention provides a method for manufacturing a scratch-resistant and solvent-resistant mesh cloth, which has the following beneficial effects:

[0026] The manufacturing method of the scratch-resistant and solvent-resistant mesh cloth adopts water-based varnish and undergoes strict curing treatment to form a stable protective film structure with good performance, so that the mesh cloth can effectively resist external scratching. In daily use, transportation and processing, even if it is scratched by hard objects, it is not easy to be scratched or damaged. At the same time, it has strong tolerance to common organic solvents (such as ethanol, acetone, etc.), and will not change color, dissolve, deform, etc. after contacting the solvent, which greatly expands the application scope of the mesh cloth, so that it can be used in occasions with high requirements for scratch resistance and solvent resistance.

[0027] Environmentally friendly water-based dyes are used for dyeing, and environmentally friendly color fixing agents are used for color fixing treatment. The color fixing agent and dye molecules interact effectively, which enhances the adhesion of the dye to the mesh fibers. The mesh can still maintain good color stability when subjected to external factors such as long-term light, friction, and washing. It is not easy to fade, ensuring that the color of the mesh is long-lasting and bright, meeting the needs of long-term use and application scenarios with strict color requirements;

[0028] Add high-performance fluorescent agents that meet environmental protection requirements to water-based varnish, and through uniform coating and drying, the fluorescent agents are firmly attached to the mesh. This can not only effectively enhance the fluorescence intensity of the mesh, so that it can present a clear and eye-catching fluorescent effect under dark light or specific excitation light conditions, but also ensure the durability of the fluorescent effect, which is not easily weakened by factors such as the passage of time and changes in the external environment. It is suitable for application scenarios that require fluorescent identification or decorative functions. DETAILED DESCRIPTION

[0029] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Implementation at the raw material preparation stage:

[0031] Implementation of mesh substrate selection: Based on the target application scenario of the product, 40 mesh polyester fiber mesh is selected as the substrate.

[0032] Implementation of water-based dye preparation: According to the preset color formula, for example, to prepare the dye formula required for blue mesh, accurately weigh an appropriate amount of environmentally friendly water-based dye and other dye ingredients for auxiliary color matching, put them into the preparation container, add an appropriate amount of deionized water, and use a stirring device to stir until the dye is completely dissolved and the solution is uniform and stable. The prepared dye solution is placed in a constant temperature storage container for use to prevent the dye from precipitating or deteriorating.

[0033] Preprocessing stage implementation:

[0034] Implementation of cleaning and impurity removal: Place the selected polyester fiber mesh substrate into an industrial cleaning machine, add an appropriate amount of mild detergent and sufficient deionized water, start the cleaning machine, set the cleaning temperature to 40°C, and the cleaning time to 15 minutes. During the cleaning process, maintain appropriate water circulation and stirring so that all parts of the mesh can fully contact the cleaning liquid to remove surface impurities such as oil, dust, etc. After cleaning, switch the cleaning machine to the rinsing mode and rinse the mesh with a large amount of clean water for no less than 3 times until the rinsed water is clear and free of impurities to ensure that the surface of the mesh is completely clean.

[0035] Pre-drying implementation: Take the cleaned mesh out of the cleaning machine, drain the excess water, and put it into the hot air circulation drying box for pre-drying. Set the temperature of the drying box to 80℃ and the drying time to 20 minutes. The temperature sensor and wind speed adjustment device in the drying box ensure that the temperature in the drying box is evenly distributed, so that the moisture content of the mesh is reduced to about 5%, achieving a good drying state, which is convenient for the smooth progress of the subsequent dyeing process.

[0036] Dyeing stage implementation:

[0037] Dyeing operation implementation: The pre-treated mesh is dyed by immersion dyeing. Slowly put the mesh into the prepared aqueous dye solution to ensure that the mesh is completely immersed in the dye solution, then heat the dye solution to 60°C, use the dye solution circulation pump to keep the dye solution in a moderate circulation flow, and control the dyeing time to 30 minutes. During this period, turn the mesh from time to time to ensure that all parts of the mesh can be evenly colored. After dyeing is completed, take the mesh out of the dye solution and rinse it briefly in clean water to remove the unfixed dye remaining on the surface.

[0038] Color fixation treatment implementation: prepare the color fixation agent solution. According to the product instructions of the color fixation agent, accurately weigh an appropriate amount of environmentally friendly color fixation agent, dissolve it in water, and prepare a color fixation agent solution with a concentration of 3%. Put the rinsed mesh into the color fixation agent solution, set the soaking time to 15 minutes, and keep the treatment temperature at 50°C. Through soaking, the color fixation agent is fully combined with the dye molecules on the mesh to enhance color fastness. After soaking, take out the mesh, rinse it with clean water, and remove the excess color fixation agent solution on the surface.

[0039] Fluorescence enhancement stage implementation:

[0040] Implementation of fluorescent agent addition: select environmentally friendly, high-brightness fluorescent agent, accurately weigh the fluorescent agent according to 2% of the weight of the mesh, and then slowly add it to an appropriate amount of water-based varnish (the amount of water-based varnish is calculated based on the area of ​​the mesh and the coating thickness requirements), use a high-speed disperser to stir at a speed of 1500 rpm for 10 minutes to ensure that the fluorescent agent is evenly dispersed in the water-based varnish to make a varnish mixture containing the fluorescent agent.

[0041] Implementation of fluorescent coating treatment: Pour the varnish mixture containing fluorescent agent into the material tank of the coating machine, adjust the parameters such as the scraper gap and coating speed of the coating machine, so that the varnish mixture can be evenly coated on the surface of the dyed and fixed mesh cloth, and control the coating thickness to 10 microns. After coating, send the mesh cloth into a constant temperature drying tunnel, set the drying temperature to 100℃, and the drying time to 10 minutes, so that the fluorescent agent is firmly attached to the mesh cloth through the curing effect of the varnish, enhance the fluorescence effect of the mesh cloth, and detect the fluorescence intensity of the mesh cloth through fluorescence photometer and other detection equipment to ensure that the predetermined fluorescence effect requirements are met.

[0042] Scratch and solvent resistant coating stage implementation:

[0043] Preparation and implementation of varnish and curing agent: Select special water-based varnish with excellent scratch and wear resistance, accurately weigh the environmentally friendly curing agent that is compatible with it according to 5% of the weight of the water-based varnish, slowly add the curing agent to the water-based varnish, use an electric stirrer to stir at a speed of 800 rpm for 15 minutes, stir thoroughly to make a scratch-resistant and solvent-resistant coating liquid, ensure that the curing agent and the water-based varnish are fully mixed, and exert the best curing and performance improvement effect.

[0044] Implementation of coating construction: Pour the scratch-resistant and solvent-resistant coating liquid into the material tank of another coating machine (the coating machine used for the fluorescent coating can be separated to avoid cross contamination), readjust the relevant parameters of the coating machine to make the coating liquid evenly coated on the surface of the fluorescent-treated mesh, control the coating thickness to 15 microns, ensure that the surface of the mesh is completely covered by the coating, and form a continuous and uniform protective film.

[0045] Implementation of curing treatment: The mesh coated with the scratch-resistant and solvent-resistant coating liquid is sent into a UV curing machine (or suitable thermal curing equipment is selected according to the characteristics of the curing agent, etc.) for curing treatment. The curing temperature is 60°C and the curing time is 8 minutes. The coating is fully cured to form a stable protective film structure. The scratch and solvent resistance of the mesh are tested by hardness test, solvent resistance immersion test and other methods to ensure that it meets the quality standards.

[0046] Post-processing stage implementation:

[0047] Implementation of 40 mesh treatment and drying of the three-plate machine: the mesh cloth after the above coating curing treatment is transported to the three-plate machine for treatment to make its surface more flat and smooth. During the treatment process, the drying device matched with the three-plate machine is started synchronously, and the drying temperature is set to 90℃ and the drying time is 12 minutes to ensure that the mesh cloth remains dry after treatment. The flatness and roughness of the mesh cloth surface are tested by surface roughness measuring instruments and other equipment to ensure the expected treatment effect.

[0048] Quality inspection and packaging implementation: Conduct a comprehensive quality inspection on the mesh after the three-plate machine 40 mesh processing and drying, use a color fastness tester to test the color fastness, and conduct scratch resistance tests (such as using an abrasion tester to simulate scratching), solvent resistance tests (immerse the mesh in different organic solvents to observe the changes) and fluorescence intensity tests in accordance with the methods specified in relevant national standards to ensure the production quality of the mesh.

[0049] Reference to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.

[0050] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0051] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A method for manufacturing a scratch-resistant and solvent-resistant mesh cloth, characterized in that: The steps include: Step 1: Prepare raw materials, including preparing mesh substrate and water-based dye; Step 2: Pre-treat the mesh substrate. Place the selected polyester fiber mesh substrate in a dedicated cleaning device and use deionized water and mild detergent to clean it to remove oil, dust and other impurities on the surface of the mesh. Then place the cleaned mesh in a drying device for pre-drying to ensure that the mesh is in a good dry state to avoid moisture from having adverse effects on subsequent dyeing, coating and other processes. Step 3, placing the pretreated mesh into the prepared aqueous dye solution for dyeing, and stirring or circulating the dye solution in time to ensure that the mesh can be evenly colored, improve the consistency of the dyeing effect, and obtain the mesh of the desired color. After the dyeing is completed, the mesh is fixed with a color fixing agent. The mesh is immersed in a solution containing an appropriate amount of the color fixing agent. Through the interaction between the color fixing agent and the dye molecules, the adhesion of the dye on the mesh fiber is enhanced, and the color fastness of the mesh is improved, so that it is not easy to fade during subsequent use; Step 4: Mix the fluorescent agent into the water-based varnish to form a varnish mixture containing the fluorescent agent, and evenly apply the varnish mixture containing the fluorescent agent on the surface of the dyed and fixed mesh through a coating device, so that the fluorescent agent is firmly attached to the mesh to enhance the fluorescence effect of the mesh; Step 5, adding a curing agent to the aqueous varnish and stirring evenly to prepare a scratch-resistant and solvent-resistant coating liquid, uniformly coating the scratch-resistant and solvent-resistant coating liquid on the surface of the mesh cloth treated with fluorescence, and sending the mesh cloth coated with the scratch-resistant and solvent-resistant coating liquid into a curing device for curing treatment; Step 6, the mesh cloth after the coating curing treatment is processed by a three-plate machine with a 40-mesh surface. During the processing, a drying operation is performed simultaneously to ensure that the mesh cloth remains dry after the processing; Step 7: Pack the processed materials.

2. The method for manufacturing a scratch-resistant and solvent-resistant mesh cloth according to claim 1, characterized in that: In step 2, start the cleaning machine, set the cleaning temperature to 30-50°C, and the cleaning time to 5-20 minutes. During the cleaning process, maintain appropriate water circulation and stirring so that all parts of the mesh can fully contact the cleaning liquid to remove surface impurities such as oil, dust, etc. After cleaning, switch the cleaning machine to the rinsing mode and use a large amount of clean water to rinse the mesh for no less than 3 times until the rinsed water is clear and free of impurities, ensuring that the surface of the mesh is completely clean; Take the cleaned mesh out of the cleaning machine, drain the excess water, and put it into the hot air circulation drying box for pre-drying. Set the temperature of the drying box to 70-90℃, and the drying time to 10-30 minutes. The temperature sensor and wind speed adjustment device in the drying box ensure that the temperature in the drying box is evenly distributed, so that the moisture content of the mesh is reduced to about 3-8%, achieving a good drying state, which is convenient for the smooth progress of the subsequent dyeing process.

3. The method for manufacturing a scratch-resistant and solvent-resistant mesh cloth according to claim 2, characterized in that: In step 3, the mesh is slowly placed in the prepared aqueous dye solution to ensure that the mesh is completely immersed in the dye solution, and then the dye solution is heated to 50-70°C, and a dye solution circulation pump is used to keep the dye solution in a moderate circulation flow. The dyeing time is controlled to be 15-45 minutes, and the mesh is turned over in time during the dyeing process to ensure that all parts of the mesh can be evenly colored. After dyeing is completed, the mesh is taken out of the dye solution and briefly rinsed in clean water to remove the unfixed dye remaining on the surface; Prepare the color fixing agent solution. According to the product instructions of the color fixing agent, accurately weigh an appropriate amount of environmentally friendly color fixing agent, dissolve it in water, and prepare a color fixing agent solution with a concentration of 1-5%. Put the rinsed mesh into the color fixing agent solution, set the soaking time to 5-20 minutes, and keep the treatment temperature at 40-60℃. Through soaking, the color fixing agent is fully combined with the dye molecules on the mesh to enhance color fastness. After soaking, take out the mesh, rinse it with clean water, and remove the excess color fixing agent solution on the surface.

4. The method for manufacturing a scratch-resistant and solvent-resistant mesh cloth according to claim 3, characterized in that: In the step 4, the fluorescent agent is accurately weighed according to 1-3% of the weight of the mesh, and then slowly added to the water-based varnish on the unfolded area of ​​the mesh, and stirred at a speed of 500-2000 rpm for 5-20 minutes using a high-speed disperser to ensure that the fluorescent agent is evenly dispersed in the water-based varnish to prepare a varnish mixture containing the fluorescent agent; Pour the varnish mixture containing fluorescent agent into the material tank of the coating machine, adjust the parameters such as the scraper gap and coating speed of the coating machine, so that the varnish mixture can be evenly coated on the surface of the dyed and fixed mesh cloth, and control the coating thickness to be 5-20 microns. After coating, send the mesh cloth into the constant temperature drying tunnel, set the drying temperature to 90-110℃, and the drying time to 5-20 minutes, so that the fluorescent agent is firmly attached to the mesh cloth through the curing effect of the varnish, and enhance the fluorescence effect of the mesh cloth.

5. The method for manufacturing a scratch-resistant and solvent-resistant mesh cloth according to claim 4, characterized in that: In the step 5, accurately weigh an environmentally friendly curing agent compatible with the water-based varnish according to 1-8% of the weight of the water-based varnish, slowly add the curing agent to the water-based varnish, use an electric stirrer to stir at a speed of 600-100 rpm for 5-20 minutes, stir thoroughly and evenly to prepare a scratch-resistant and solvent-resistant coating liquid, and ensure that the curing agent and the water-based varnish are fully mixed; Pour the scratch-resistant and solvent-resistant coating liquid into the material tank of another coating machine, and evenly coat the coating liquid on the surface of the fluorescent-treated mesh cloth. Control the coating thickness to 5-20 microns to ensure that the surface of the mesh cloth is completely covered by the coating to form a continuous and uniform protective film. The mesh coated with the scratch-resistant and solvent-resistant coating liquid is sent into a UV curing machine with a curing temperature of 50-70°C and a curing time of 5-10 minutes to fully cure the coating and form a stable protective film structure.

6. The method for manufacturing a scratch-resistant and solvent-resistant mesh cloth according to claim 5, characterized in that: In step 6, the drying device matched with the three-plate machine is started, and the drying temperature is set to 80-100° C. and the drying time is set to 10-15 minutes to ensure that the mesh remains dry after treatment.