Environment-friendly anti-aging PVC (polyvinyl chloride) netted sandwich cloth and preparation method thereof

Abstract

The invention discloses environment-friendly anti-aging PVC (Polyvinyl Chloride) sandwich mesh cloth and a preparation method thereof, and relates to the technical field of PVC sandwich mesh cloth heat sealing machines.The environment-friendly anti-aging PVC sandwich mesh cloth comprises a base, a first supporting plate and a second supporting plate are mounted on the base, heating plates are mounted in the first supporting plate and the second supporting plate, and an air blowing plate is mounted on a fixing frame; a blowing hole is formed in the blowing plate, a moving head is fixedly installed on the sliding block, a PVC coating and gridding cloth are placed on the first supporting plate, the PVC coating and the gridding cloth are moved to the position above the second supporting plate from the position above the first supporting plate through the moving head, and the second group of gridding cloth and the PVC coating are continuously subjected to heat sealing through the pressing plate; and meanwhile, air blowing holes blow cold air to cool the gridding cloth and the PVC coating on the first supporting plate, two sets of supporting plates are arranged, one set is used for heat sealing, the other set is used for cooling and material changing, the two sets are carried out synchronously, continuous heat sealing of the multiple sets of gridding cloth and the PVC coating is achieved, the cooling time is saved, the utilization rate of the device is increased, and the heat sealing efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of PVC mesh cloth, and in particular to an environmentally friendly and aging-resistant PVC mesh cloth and a preparation method thereof. Background Art

[0002] PVC mesh cloth is one of the PVC fabrics. It is a product produced by bonding transparent PVC film and mesh cloth. The mesh cloth in the middle can be clearly seen through the PVC film. All of them are produced with new materials and can be used outdoors for 3-5 years all year round. Therefore, PVC mesh cloth is often used in outdoor applications.

[0003] The mesh cloth is a sandwich material, composed of high-strength polyester fiber mesh and polyethylene film, with excellent physical and mechanical properties. PCV mesh cloth is a composite fabric made by bonding the front and back of the mesh cloth together through a hot-sticking process. It has a strong three-dimensional sense and a moderately soft and hard feel. It is an environmentally friendly and low-toxic product.

[0004] In the process of bonding the PCV film to the front and back sides of the mesh cloth in the existing PVC mesh cloth, after the heat sealing process of the PCV film and the mesh cloth is completed by a heat sealing machine, the PCV film and the mesh cloth need to be left to cool so that the PVC mesh cloth can maintain a stable shape and performance. Since the heat sealing process cannot be performed during the cooling time, the heat sealing efficiency of the heat sealing device is low, which affects the production efficiency of the PVC mesh cloth. Summary of the invention

[0005] The purpose of the present invention is to solve the technical problem that in the process of bonding the PCV film to the front and back sides of the mesh cloth of the existing PVC mesh cloth, after the heat-sealing process of the PCV film and the mesh cloth is completed by a heat-sealing machine, the PCV film and the mesh cloth need to be left to cool so that the PVC mesh cloth can maintain a stable shape and performance. Since the heat-sealing process cannot be performed during the cooling time, the heat-sealing efficiency of the heat-sealing device is low, which affects the production efficiency of the PVC mesh cloth.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] The present invention discloses an environmentally friendly and aging-resistant PVC mesh cloth, comprising a mesh cloth, an aging-resistant coating is pasted on the front and back sides of the mesh cloth, a water pressure-resistant coating is pasted on the front and back sides of the aging-resistant coating, a wear-resistant coating is pasted on the front and back sides of the water pressure-resistant coating, an anti-ultraviolet coating is pasted on the front and back sides of the wear-resistant coating, the mesh cloth is made of a high-strength polyester fiber mesh, the mesh cloth is woven by warp and weft knitting, the aging-resistant coating is PVC glue, the water pressure-resistant coating is PA glue, the wear-resistant coating is PU glue, and the anti-ultraviolet coating is titanium metal color glue.

[0008] The preparation method of environmentally friendly and aging-resistant PVC mesh cloth comprises the following steps:

[0009] S1: Prepare appropriate amounts of PVC resin, plasticizer, filler and other additives, mix these PVC raw materials in a mixing tank, and stir evenly.

[0010] S2: The mixed raw materials are fed into the extruder for melt extrusion. The extruded PVC film is cooled and shaped to ensure that it has stable physical properties and dimensions.

[0011] S3: Send the two layers of PVC film and the grid-like material in the middle into a heat sealing machine for heat pressing and bonding.

[0012] S4: Use a heat sealing machine to heat-press and bond the PVC glue, PA glue, PU glue and titanium metal color glue to the mesh cloth 31 in sequence to form a PVC mesh cloth.

[0013] S5: The PVC mesh cloth is sent to the cutting machine for cutting, and then rolled up by the winder to complete the production.

[0014] The mass fractions of the raw materials of the PVC glue in the S1 are as follows: 49.2-52.6 parts of suspension method-polyvinyl chloride resin powder, 0.14-0.18 parts of ultraviolet absorber, 30.5-32.8 parts of diisononyl phthalate, 4.7-5.3 parts of dioctyl adipate, 0.07-0.81 parts of antioxidant, 12.6-13.4 parts of light calcium carbonate, 0.74-0.8 parts of barium zinc liquid stabilizer, and 1.31-1.36 parts of organic pigment. The mixing time of the PVC glue raw materials in S1 is 6-10 minutes, and the mixing temperature is 110°C.

[0015] The melting temperature of the extruder in S2 is between 130°C and 160°C in the feeding zone, between 170°C and 200°C in the mixing section, between 190°C and 230°C in the nozzle, and between 220°C and 320°C in the die head. The setting temperature of the heat sealing machine in S3 and S4 is between 220°C and 240°C, the pressure range is between 2-5MPa, and the hot pressing time is between 10-30 seconds. The mesh cloth is a high-strength polyester fiber mesh, and the fiber is a natural renewable material, that is, the mesh cloth is an environmentally friendly fabric. By adding a PA adhesive layer, a PU adhesive layer and a titanium metal color adhesive layer, the hardness and wear resistance of the mesh cloth are enhanced, making the mesh cloth more sturdy and durable, thereby increasing the service life of the cloth, which is beneficial to improving the aging resistance of the PVC mesh cloth.

[0016] The heat sealing machine used in the preparation method of environmentally friendly and aging-resistant PVC mesh cloth comprises a base, a first supporting plate and a second supporting plate are installed on the base, a heating plate is installed inside the first supporting plate and the second supporting plate, a fixing frame is welded on the front wall of the base, a blowing plate is installed on the fixing frame, a cavity is opened inside the blowing plate, two groups of blowing holes are opened on the blowing plate, each group of blowing holes is arranged in a rectangular array structure, the two groups of blowing holes correspond to the first supporting plate and the second supporting plate respectively, an air duct is connected to the side wall of the blowing plate, a guide rail is installed on the side wall of the blowing plate, a sealing plate is installed inside the guide rail, a groove is opened on the top side of the guide rail, a connecting plate is welded on the top side of the sealing plate, the connecting plate passes through the groove, a fan is installed on the rear wall of the base through the machine base, the fan is connected to the air duct, a guide plate is opened on the rear wall of the base, a slide groove is opened on the guide plate, a screw rod is rotatably installed on the inner wall of the slide groove, a stepping motor is installed on the side wall of the guide plate through the machine base, the output shaft of the stepping motor is fixedly connected to one end of the screw rod, a slider is installed in the slide groove, and the slider A moving head is fixedly installed on the upper part, and the moving head is fixedly connected to the connecting plate. An aging-resistant coating and a mesh cloth are placed on the first support plate. A hydraulic cylinder is installed inside the moving head, and a hydraulic rod is connected to the hydraulic cylinder. A mounting plate is fixedly installed on the hydraulic rod, and four groups of rod seats are installed on the mounting plate. Screws are passed through the rod seats, and knobs are installed on the top sides of the screws. The bottom sides of the four groups of screws are rotatably connected with pressing plates. After the mesh cloth and the PVC coating on the first support plate are heat-sealed by the pressing plate, the moving head moves from above the first support plate to above the second support plate, and the pressing plate continues to heat-seal the second group of mesh cloth and the PVC coating. At the same time, the blowing holes in front of the first support plate blow out cold air to cool the mesh cloth and the PVC coating on the first support plate. By arranging two groups of support plates, one group is heat-sealed and the other group is cooled and replaced, and the two groups are carried out synchronously, so as to realize continuous heat-sealing of multiple groups of mesh cloth and PVC coatings, save cooling time, and be beneficial to improving the utilization rate of the device and the heat-sealing efficiency.

[0017] Beneficial effects of the present invention:

[0018] The mesh cloth is a high-strength polyester fiber mesh, and the fiber is a naturally renewable material, that is, the mesh cloth is an environmentally friendly fabric. By adding PA glue layer, PU glue layer and titanium metal color glue layer, the hardness and wear resistance of the mesh cloth are enhanced, making the mesh cloth more sturdy and durable, thereby increasing the service life of the cloth, which is beneficial to improving the aging resistance of the PVC mesh cloth.

[0019] After the mesh cloth and PVC coating on the first support plate are heat-sealed by the pressing plate, the moving head moves from above the first support plate to above the second support plate, and the pressing plate continues to heat-seal the second group of mesh cloth and PVC coating. At the same time, the blowing holes in front of the first support plate blow out cold air to cool the mesh cloth and PVC coating on the first support plate. By setting two groups of support plates, one group is used for heat sealing and the other group is used for cooling and material replacement, and the two groups are carried out synchronously, thereby achieving continuous heat sealing of multiple groups of mesh cloth and PVC coating, saving cooling time, and being beneficial to improving the utilization rate of the device and the heat sealing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the PVC mesh cloth of the present invention;

[0022] Figure 2 It is a schematic diagram of the overall three-dimensional structure of the heat sealing machine of the present invention;

[0023] Figure 3 It is a schematic diagram of the three-dimensional structure of the base of the heat sealing machine of the present invention;

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the fixing frame of the heat sealing machine of the present invention;

[0025] Figure 5 It is a three-dimensional structural diagram of the blowing plate of the heat sealing machine of the present invention;

[0026] Figure 6 It is a three-dimensional structural diagram of the pressing plate of the heat sealing machine of the present invention;

[0027] Figure 7 It is a flow chart of the preparation method of the present invention.

[0028] In the figure: 1. base; 2. first support plate; 3. second support plate; 4. fixing frame; 5. blowing plate; 6. cavity; 7. blowing hole; 8. air duct; 9. guide rail; 10. sealing plate; 11. groove; 12. connecting plate; 13. fan; 14. guide plate; 15. slide groove; 16. screw rod; 17. stepping motor; 18. slider; 19. moving head; 20. hydraulic rod; 21. mounting plate; 22. rod seat; 23. screw rod; 24. knob; 25. pressure plate; 31. mesh cloth; 32. aging-resistant coating; 33. water pressure-resistant coating; 34. wear-resistant coating; 35. anti-ultraviolet coating. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in 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] See also Figure 1 As shown, the present invention is an environmentally friendly and aging-resistant PVC mesh cloth, including a mesh cloth 31, an aging-resistant coating 32 is pasted on the front and back sides of the mesh cloth 31, a water pressure-resistant coating 33 is pasted on the front and back sides of the aging-resistant coating 32, a wear-resistant coating 34 is pasted on the front and back sides of the water pressure-resistant coating 33, and an anti-ultraviolet coating 35 is pasted on the front and back sides of the wear-resistant coating 34. The mesh cloth is made of high-strength polyester fiber mesh, the mesh cloth is woven by warp and weft knitting, the aging-resistant coating 32 is PVC glue, the water pressure-resistant coating 33 is PA glue, the wear-resistant coating 34 is PU glue, and the anti-ultraviolet coating 35 is titanium metal color glue.

[0031] See also Figure 7 As shown, the preparation method of environmentally friendly and aging-resistant PVC mesh cloth comprises the following steps:

[0032] S1: Prepare appropriate amounts of PVC resin, plasticizer, filler and other additives, mix these PVC raw materials in a mixing tank, and stir evenly.

[0033] S2: The mixed raw materials are fed into the extruder for melt extrusion. The extruded PVC film is cooled and shaped to ensure that it has stable physical properties and dimensions.

[0034] S3: Send the two layers of PVC film and the grid-like material in the middle into a heat sealing machine for heat pressing and bonding.

[0035] S4: Use a heat sealing machine to heat-press and bond the PVC glue, PA glue, PU glue and titanium metal color glue to the mesh cloth 31 in sequence to form a PVC mesh cloth.

[0036] S5: The PVC mesh cloth is sent to the cutting machine for cutting, and then rolled up by the winder to complete the production.

[0037] The mass fraction of the raw materials of PVC glue in S1 is: 49.2-52.6 parts of suspension method-polyvinyl chloride resin powder, 0.14-0.18 parts of ultraviolet absorber, 30.5-32.8 parts of diisononyl phthalate, 4.7-5.3 parts of dioctyl adipate, 0.07-0.81 parts of antioxidant, 12.6-13.4 parts of light calcium carbonate, 0.74-0.8 parts of barium zinc liquid stabilizer, 1.31-1.36 parts of organic pigment. The mixing time of PVC glue raw materials in S1 is 6-10 minutes, and the mixing temperature is 110℃.

[0038] The melting temperature of the extruder in S2 is between 130℃ and 160℃ in the feeding zone, between 170℃ and 200℃ in the mixing section, between 190℃ and 230℃ in the nozzle, and between 220℃ and 320℃ in the die head. The setting temperature of the heat sealing machine in S3 and S4 is between 220℃ and 240℃, the pressure range is between 2-5MPa, and the hot pressing time is between 10-30 seconds. During operation, the existing PVC mesh cloth is prone to deformation, wear and deterioration after 3-5 years of use, resulting in poor aging resistance of the PVC mesh cloth, which affects the durability of the PVC mesh cloth. The mesh cloth 31 is a high-strength polyester fiber mesh, and the fiber is a natural renewable material, that is, the mesh cloth 31 is an environmentally friendly fabric. An aging-resistant coating 32 is pasted on the front and back of the mesh cloth 31. The aging-resistant coating 32 is PVC glue. PVC glue is an environmentally friendly material with aging resistance and weather resistance, which can make the PVC mesh cloth be used for 3-5 years. A water pressure resistant coating 33 is pasted on the front and back sides of the PVC glue. The water pressure resistant coating 33 is PA glue. After being pasted, the hand feel is increased, the windproof and drapey are provided. By pasting a wear-resistant coating 34 on the front and back sides of the PA glue, the wear-resistant coating 34 is PU glue. After being pasted, the mesh cloth feels full and elastic, and the surface has a film feel, which can not only improve the wear resistance of the mesh cloth, but also increase the hardness, strength and durability of the mesh cloth, and at the same time make the mesh cloth have a flame retardant effect. By pasting an anti-ultraviolet coating 35 on the front and back sides of the PU glue, the anti-ultraviolet coating 35 is titanium metal color glue. The titanium metal color glue can highly reflect multi-band sunlight ultraviolet rays and other visible light, etc., and does not absorb high heat energy infrared rays, so it can slow down the aging speed of the mesh cloth. This structure enhances the hardness and wear resistance of the mesh cloth by adding PA glue layer, PU glue layer and titanium metal color glue layer, making the mesh cloth more sturdy and durable, thereby increasing the service life of the cloth, which is beneficial to improving the aging resistance of the PVC mesh cloth.

[0039] See also Figure 2-5As shown, the heat sealing machine used in the preparation method of the environmentally friendly and aging-resistant PVC mesh cloth includes a base 1, a first support plate 2 and a second support plate 3 are installed on the base 1, a heating plate is installed inside the first support plate 2 and the second support plate 3, a fixing frame 4 is welded on the front wall of the base 1, a blowing plate 5 is installed on the fixing frame 4, a cavity 6 is opened inside the blowing plate 5, two groups of blowing holes 7 are opened on the blowing plate 5, each group of blowing holes 7 is arranged in a rectangular array structure, the two groups of blowing holes 7 correspond to the first support plate 2 and the second support plate 3 respectively, and an air duct 8 is connected to the side wall of the blowing plate 5. A guide rail 9 is installed on the side wall of the blowing plate 5, a sealing plate 10 is installed inside the guide rail 9, a groove 11 is opened on the top side of the guide rail 9, a connecting plate 12 is welded on the top side of the sealing plate 10, and the connecting plate 12 passes through the groove 11. A fan 13 is installed on the rear wall of the base 1 through the base, and the fan 13 is connected to the air duct 8. A guide plate 14 is opened on the rear wall of the base 1, and a slide groove 15 is opened on the guide plate 14. A screw rod 16 is rotatably installed on the inner wall of the slide groove 15. A stepper motor 17 is installed on the side wall of the guide plate 14 through the base, and the output shaft of the stepper motor 17 is fixedly connected to one end of the screw rod 16. The slide The groove 15 is equipped with a slider 18, on which a moving head 19 is fixedly mounted, and the moving head 19 is fixedly connected to the connecting plate 12. An anti-aging coating 32 and a mesh cloth 31 are placed on the first supporting plate 2. When working, after the existing heat sealing machine completes the heat sealing process on the PVC film and the mesh cloth 31, it is necessary to let the PVC film and the mesh cloth 31 stand and cool so that the PVC sandwich cloth can maintain a stable shape and performance. Since the heat sealing process cannot be performed during the cooling time, the heat sealing efficiency of the device is low. By placing the PVC film on the first supporting plate 2, the heat sealing process can be carried out. , place the mesh cloth 31 on the PVC film, operate the heating plate inside the first support plate 2 to heat the first support plate 2, the first support plate 2 heats the PVC film, and the hydraulic cylinder operates, the hydraulic rod 20 drives the mounting plate 21 and the pressing plate 25 to move vertically downward, the pressing plate 25 presses the mesh cloth 31 and the PVC film, so that the PVC film is heated evenly, the PVC film softens after heating and adheres to the mesh cloth 31, after the heating is completed, the pressing plate 25 is lifted, and the mesh cloth 31 and the PVC film on the first support plate 2 need to be left to cool;

[0040] The stepper motor 17 is operated to drive the screw rod 16 to rotate, and the screw rod 16 drives the slider 18 thereon to move from the right end to the left end, and the slider 18 drives the moving head 19 to move from above the first support plate 2 to above the second support plate 3. At this time, the second group of mesh cloth 31 and PVC film to be heat-sealed have been placed on the second support plate 3, and the second support plate 3 heats the second group of PVC film, and the pressing plate 25 presses the second group of mesh cloth 31 and PVC film;

[0041] When the moving head 19 moves from above the first support plate 2 to above the second support plate 3, the moving head 19 drives the connecting plate 12 to move horizontally, and the connecting plate 12 drives the sealing plate 10 to move horizontally, and the sealing plate 10 closes the blowing hole 7 on the blowing plate 5 corresponding to the second support plate 3. At this time, the fan 13 is in operation, and the fan 13 introduces cold air into the blowing plate 5 through the air duct 8, and the cold air is blown out from the blowing hole 7 in front of the first support plate 2. The cold air cools the mesh cloth 31 and the PVC film on the first support plate 2. The mesh cloth 31 and the PVC film are quickly cooled and removed from the first support plate 2, and replaced with the third group of mesh cloth 31 and PVC film to be heat-sealed; by setting two groups of support plates, one group is heat-sealed and the other group is cooled and replaced, and the two groups are carried out synchronously, so that continuous heat sealing of multiple groups of mesh cloth 31 and PVC film is achieved, which saves cooling time, is beneficial to improving the utilization rate of the device, and is beneficial to improving the heat sealing efficiency.

[0042] See also Figure 6 As shown, a hydraulic cylinder is installed inside the moving head 19, and a hydraulic rod 20 is connected to the hydraulic cylinder. A mounting plate 21 is fixedly installed on the hydraulic rod 20, and four groups of rod seats 22 are installed on the mounting plate 21. A screw 23 runs through the rod seat 22, and a knob 24 is installed on the top side of the screw 23. The bottom side of the four groups of screws 23 is rotatably connected to a pressing plate 25. When working, the existing heat sealing machine cannot accurately adjust the thickness of the mesh cloth 31 and the PVC film during the heat sealing of the mesh cloth 31 and the PVC film, resulting in poor accuracy of the device. By placing the PVC film on the first support plate 2, The mesh cloth 31 is placed on the PVC film, and the hydraulic cylinder is operated. The hydraulic rod 20 drives the mounting plate 21 to move vertically downward, and the mounting plate 21 drives the four sets of screws 23 thereon to move vertically downward, and the four sets of screws 23 drive the pressure plate 25 to move vertically downward. The knob 24 is turned to drive the screws 23 to rotate, and the screws 23 drive the pressure plate 25 to move vertically, so that the pressure plate 25 fits the mesh cloth 31, thereby realizing the adjustment of the distance between the pressure plate 25 and the first support plate 2. This structure can accurately adjust the height of the pressure plate 25 according to the thickness of the mesh cloth 31 and the PVC film, which is beneficial to improving the accuracy of the device.

[0043] Working principle: After 3-5 years of use, the existing PVC mesh cloth is prone to deformation, wear and deterioration, resulting in poor aging resistance of the PVC mesh cloth, affecting the durability of the PVC mesh cloth. The mesh cloth 31 is a high-strength polyester fiber mesh, and the fiber is a natural renewable material, that is, the mesh cloth 31 is an environmentally friendly fabric. An aging-resistant coating 32 is pasted on the front and back of the mesh cloth 31. The aging-resistant coating 32 is PVC glue. PVC glue is an environmentally friendly material with aging and weather resistance. The PVC mesh cloth can be used for 3-5 years. The water pressure-resistant coating 33 is PA glue, which can increase the hand feel, windproof, and drape after coating. A wear-resistant coating 34 is pasted on the surface. The wear-resistant coating 34 is PU glue. After coating, the mesh cloth feels full and elastic, and the surface has a film feeling. It can not only improve the wear resistance of the mesh cloth, but also increase the hardness, strength and durability of the mesh cloth, and at the same time make the mesh cloth have a flame retardant effect. By pasting an anti-ultraviolet coating 35 on the front and back sides of the PU glue, the anti-ultraviolet coating 35 is titanium metal color glue. The titanium metal color glue can highly reflect multi-band sunlight ultraviolet rays and other visible light, etc., and does not absorb high-heat energy infrared rays, so it can slow down the aging speed of the mesh cloth. This structure enhances the hardness and wear resistance of the mesh cloth by adding PA glue layer, PU glue layer and titanium metal color glue layer, making the mesh cloth more sturdy and durable, thereby improving the use of the cloth The service life of the PVC mesh cloth is improved, which is beneficial to improving the aging resistance of the PVC mesh cloth. After the existing heat sealing machine completes the heat sealing process on the PVC film and the mesh cloth 31, it is necessary to let the PVC film and the mesh cloth 31 stand and cool so that the PVC mesh cloth can maintain a stable shape and performance. Since the heat sealing process cannot be performed during the cooling time, the heat sealing efficiency of the device is low. By placing the PVC film on the first support plate 2, and placing the mesh cloth 31 on the PVC film, the heating plate inside the first support plate 2 is operated to heat the first support plate 2, and the first support plate 2 heats the PVC film. The hydraulic cylinder is operated, and the hydraulic rod 20 drives the mounting plate 21 and the pressing plate 25 to move vertically downward, and the pressing plate 25 heats the mesh cloth 31 and The PVC film is pressed so that the PVC film is heated evenly. After heating, the PVC film softens and adheres to the mesh cloth 31. After the heating is completed, the pressing plate 25 is lifted. At this time, the mesh cloth 31 and the PVC film on the first support plate 2 need to be left to cool. The stepper motor 17 is operated to drive the screw rod 16 to rotate. The screw rod 16 drives the slider 18 thereon to move from the right end to the left end. The slider 18 drives the moving head 19 from above the first support plate 2 to above the second support plate 3. At this time, the second group of mesh cloth 31 and PVC film to be heat-sealed have been placed on the second support plate 3. The second support plate 3 heats the second group of PVC film, and the pressing plate 25 presses the second group of mesh cloth 31 and PVC film.When the moving head 19 moves from above the first support plate 2 to above the second support plate 3, the moving head 19 drives the connecting plate 12 to move horizontally, and the connecting plate 12 drives the sealing plate 10 to move horizontally, and the sealing plate 10 closes the blowing hole 7 on the blowing plate 5 corresponding to the second support plate 3. At this time, the fan 13 is in operation, and the fan 13 introduces cold air into the blowing plate 5 through the air duct 8, and the cold air is blown out from the blowing hole 7 in front of the first support plate 2. The cold air cools the mesh cloth 31 and the PVC film on the first support plate 2. The mesh cloth 31 and the PVC film are quickly cooled and removed from the first support plate 2, and replaced with the third group of mesh cloth 31 and PVC film to be heat-sealed; by setting two groups of support plates, one group is heat-sealed, and the other group is cooled and replaced, and the two groups are carried out synchronously, so that continuous heat sealing of multiple groups of mesh cloth 31 and PVC film is achieved, which saves cooling time, is beneficial to improving the utilization rate of the device, and is beneficial to Improve heat sealing efficiency; the existing heat sealing machine cannot accurately adjust the thickness of the mesh cloth 31 and the PVC film during heat sealing of the mesh cloth 31 and the PVC film, resulting in poor accuracy of the device. By placing the PVC film on the first support plate 2, placing the mesh cloth 31 on the PVC film, and operating the hydraulic cylinder, the hydraulic rod 20 drives the mounting plate 21 to move vertically downward, the mounting plate 21 drives the four sets of screws 23 thereon to move vertically downward, the four sets of screws 23 drive the pressing plate 25 to move vertically downward, and the knob 24 is turned to drive the screws 23 to rotate, and the screws 23 drive the pressing plate 25 to move vertically, so that the pressing plate 25 fits the mesh cloth 31, and the distance between the pressing plate 25 and the first support plate 2 is adjusted. This structure can accurately adjust the height of the pressing plate 25 according to the thickness of the mesh cloth 31 and the PVC film, which is conducive to improving the accuracy of the device. ;

[0044] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. Environmentally friendly and aging-resistant PVC mesh cloth, characterized by: The invention comprises a mesh cloth (31), wherein an anti-aging coating (32) is pasted on the front and back surfaces of the mesh cloth (31), a water pressure resistant coating (33) is pasted on the front and back surfaces of the anti-aging coating (32), a wear-resistant coating (34) is pasted on the front and back surfaces of the water pressure resistant coating (33), and an anti-ultraviolet coating (35) is pasted on the front and back surfaces of the wear-resistant coating (34).

2. The environmentally friendly and aging-resistant PVC mesh cloth according to claim 1 is characterized in that: The mesh cloth (31) is made of a high-strength polyester fiber mesh, and the mesh cloth (31) is woven in a warp and weft knitting method.

3. The environmentally friendly and aging-resistant PVC mesh cloth according to claim 2 is characterized in that: The anti-aging coating (32) is PVC glue, the water pressure resistant coating (33) is PA glue, the wear-resistant coating (34) is PU glue, and the anti-ultraviolet coating (35) is titanium metal color glue.

4. The preparation method of environmentally friendly and aging-resistant PVC mesh cloth is characterized in that: The preparation steps are: S1: Prepare appropriate amounts of PVC resin, plasticizer, filler and other additives, mix these PVC raw materials in a mixing tank, and stir evenly. S2: The mixed raw materials are fed into the extruder for melt extrusion. The extruded PVC film is cooled and shaped to ensure that it has stable physical properties and dimensions. S3: Send the two layers of PVC film and the grid-like material in the middle into a heat sealing machine for heat pressing and bonding. S4: Using a heat sealing machine, PVC glue, PA glue, PU glue and titanium metal color glue are heat-pressed and bonded to the mesh cloth (31) in sequence to form a PVC mesh cloth. S5: The PVC mesh cloth is sent to the cutting machine for cutting, and then rolled up by the winder to complete the production.

5. The method for preparing the environmentally friendly and aging-resistant PVC mesh cloth according to claim 4, characterized in that: The mass fractions of the raw materials of the PVC glue in the S1 are as follows: 49.2-52.6 parts of suspension method-polyvinyl chloride resin powder, 0.14-0.18 parts of ultraviolet absorber, 30.5-32.8 parts of diisononyl phthalate, 4.7-5.3 parts of dioctyl adipate, 0.07-0.81 parts of antioxidant, 12.6-13.4 parts of light calcium carbonate, 0.74-0.8 parts of barium zinc liquid stabilizer, and 1.31-1.36 parts of organic pigment.

6. The method for preparing the environmentally friendly and aging-resistant PVC mesh cloth according to claim 5, characterized in that: The mixing time of the PVC glue raw material in S1 is 6-10 minutes, and the mixing temperature is 110°C.

7. The method for preparing the environmentally friendly and aging-resistant PVC mesh cloth according to claim 4, characterized in that: The melting temperature of the extruder in S2 is between 130°C and 160°C in the feeding zone, between 170°C and 200°C in the mixing section, between 190°C and 230°C in the nozzle, and between 220°C and 320°C in the die head.

8. The method for preparing the environmentally friendly and aging-resistant PVC mesh cloth according to claim 4, characterized in that: The setting temperature of the heat sealing machine in S3 and S4 is between 220° C. and 240° C., the pressure range is between 2 and 5 MPa, and the heat pressing time is between 10 and 30 seconds.

9. The heat sealing machine used in the method for preparing the environmentally friendly and aging-resistant PVC mesh cloth according to claim 7 is characterized in that: The invention comprises a base (1), wherein a first support plate (2) and a second support plate (3) are mounted on the base (1), a heating plate is mounted inside the first support plate (2) and the second support plate (3), a fixing frame (4) is welded on the front wall of the base (1), a blowing plate (5) is mounted on the fixing frame (4), a cavity (6) is opened inside the blowing plate (5), two groups of blowing holes (7) are opened on the blowing plate (5), each group of blowing holes (7) is arranged in a rectangular array structure, and the two groups of blowing holes (7) correspond to the first support plate (2) and the second support plate (3) respectively, an air duct (8) is connected to the side wall of the blowing plate (5), a guide rail (9) is mounted on the side wall of the blowing plate (5), a sealing plate (10) is assembled inside the guide rail (9), a groove (11) is opened on the top side of the guide rail (9), and the sealing plate (10) is welded on the top side. A connecting plate (12) is provided, the connecting plate (12) passes through the groove (11), a fan (13) is installed on the rear wall of the base (1) through a machine base, the fan (13) is connected to the air duct (8), a guide plate (14) is provided on the rear wall of the base (1), a slide groove (15) is provided on the guide plate (14), a screw rod (16) is rotatably installed on the inner wall of the slide groove (15), a stepping motor (17) is installed on the side wall of the guide plate (14) through the machine base, the output shaft of the stepping motor (17) is fixedly connected to one end of the screw rod (16), a slider (18) is installed in the slide groove (15), a moving head (19) is fixedly installed on the slider (18), and the moving head (19) is fixedly connected to the connecting plate (12), and an anti-aging coating (32) and a mesh cloth (31) are placed on the first support plate (2).

10. The heat sealing device used in the method for preparing the environmentally friendly and aging-resistant PVC mesh cloth according to claim 7, characterized in that: A hydraulic cylinder is installed inside the moving head (19), a hydraulic rod (20) is connected to the hydraulic cylinder, a mounting plate (21) is fixedly installed on the hydraulic rod (20), four groups of rod seats (22) are installed on the mounting plate (21), a screw rod (23) passes through the rod seat (22), a knob (24) is installed on the top side of the screw rod (23), and a pressure plate (25) is rotatably connected to the bottom side of the four groups of screw rods (23).

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