Net-sandwiched pool material with good dimensional stability and preparation method thereof

Abstract

The invention discloses a mesh-sandwiched pool material with good dimensional stability and a preparation method thereof, and belongs to the technical field of mesh-sandwiched materials, and the preparation method comprises the following steps: carrying out dipping treatment on mesh cloth by adopting paste, then drying, and carrying out hot-pressing lamination on the mesh cloth, a preheated surface membrane and a preheated bottom membrane. The mesh cloth is treated by adopting a method of firstly dipping and then pressing, so that the yarn fixing effect can be enhanced, the elongation of the material is reduced, the dimensional stability of the product is ensured, and the obtained mesh-sandwiched pool material has good waterproof performance and pressure-bearing performance.

Description

Technical Field

[0001] The invention belongs to the technical field of mesh materials, and in particular relates to a mesh pool material with good dimensional stability and a preparation method thereof. Background Art

[0002] The bracket pool is a common temporary or mobile water storage facility, mainly composed of a steel frame and a waterproof cloth. The bracket pool is suitable for outdoor public places such as parks and squares, especially in summer, where people can play in the water and swim, such as the bracket pool disclosed in the Chinese utility model patent with application number 202021554914.X; it is also suitable for irrigation systems and breeding systems in agricultural, animal husbandry and fishery production, and can effectively collect and utilize rainwater, improve the utilization efficiency of water resources, and reduce investment, such as a multifunctional agricultural breeding pool disclosed in the Chinese utility model patent with application number 201721502084.4. The waterproof cloth mostly uses a mesh pool material composed of mesh and film. Since the bracket pool is exposed to the outdoor environment for a long time, in addition to good waterproof performance, the mesh pool material also needs to have good durability.

[0003] For volumes greater than 10m 3 For medium and large bracket pools, the mesh pool material needs to have higher strength and the elongation should not be too large, otherwise it will cause deformation and bulging after filling with water, and further cause problems such as insufficient pressure bearing capacity and material rupture. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a 3 A mesh pool material with good dimensional stability for medium and large bracket pools and a preparation method thereof.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a method for preparing a mesh pool material with good dimensional stability, comprising the following steps: impregnating the mesh with a paste, then drying it, and then hot-pressing and laminating it with a preheated mask and a base film.

[0006] Wherein, the impregnation process is carried out in a pasting machine; The pasting machine comprises a pasting tank, an impregnation roller arranged in the pasting tank, and a steel roller, a rubber roller and a pressure roller group arranged above the pasting tank in sequence from bottom to top.

[0007] Another technical solution adopted by the present invention is to provide a netted pool material with good dimensional stability prepared by the above preparation method.

[0008] The beneficial effect of the present invention is that the preparation method provided by the present invention uses a method of first impregnating and then pressing to process the mesh cloth, which can enhance the yarn fixing effect and reduce the elongation of the material, thereby improving the dimensional stability of the finished product, so that the finished product has good waterproof performance and pressure-bearing performance after filling with water. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of a pasting machine according to a specific embodiment of the present invention; Figure 2 It is a front view of a pasting machine according to a specific embodiment of the present invention; Description of labels: 1. Paste tank; 2. Impregnation roller; 3. Steel roller; 4. Rubber roller; 5. Pressure roller group; 6. Feed guide roller; 7. Mesh cloth. DETAILED DESCRIPTION

[0010] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0011] A method for preparing a mesh pool material with good dimensional stability comprises the following steps: impregnating the mesh with a paste, drying it, and then hot-pressing and laminating it with a preheated face mask and a base film.

[0012] From the above description, it can be seen that the beneficial effect of the present invention is that the preparation method provided by the present invention can significantly improve the dimensional stability of the finished product, thereby ensuring that the finished product has good pressure-bearing performance after holding a large amount of water, avoiding deformation, bulging or even rupture.

[0013] Furthermore, the drying temperature is 90-120° C. The preheating temperature is 150-170° C. The hot pressing temperature is 170-180° C. and the pressure is 20-35 kgf. The appropriate temperature can further ensure dimensional stability.

[0014] Furthermore, the mesh is a warp-knitted polyester mesh, and the tissue density of the mesh is 2.8 to 8 strands / cm. For the mesh pool material for a larger-sized support pool, a mesh with high cost performance can be selected according to the cost, and the mesh can be sparsely knitted or densely knitted. The preparation method provided by the present invention is applicable to meshes of various types and sizes. Compared with the traditional method of applying paste by scraping or simply dipping paste and then compounding, the production efficiency is significantly improved, and the product yield is higher.

[0015] Further, the impregnation process is carried out in a pasting machine; The pasting machine comprises a pasting tank, an impregnating roller arranged in the pasting tank, and a steel roller, a rubber roller and a pressure roller group arranged above the pasting tank in sequence from bottom to top.

[0016] The steel roller has a high hardness and plays a role in driving the paste. Then, the steel roller and the rubber roller are pressed to ensure that the paste coating is evenly formed on the surface of the mesh. The pressing roller group consists of two smooth steel rollers, which have good corrosion resistance and swelling resistance, and are easy to clean and not easy to leave residual paste. The above-mentioned pasting machine can first fully immerse the mesh in the paste, and then reduce the amount of paste by pressing twice, avoiding the problem of bubbling in the subsequent finished product that affects the pressure bearing capacity.

[0017] Furthermore, a feed guide roller is provided at one end of the paste tank, and the feed guides the mesh cloth into the paste machine to realize continuous production.

[0018] Furthermore, the viscosity of the paste is 300~500cps. The viscosity of the paste should not be too high. A paste with too high viscosity will cause too much paste to be applied, which will cause greater damage to the mesh, resulting in a significant decrease in the physical properties of the material after bonding, especially the tear strength, and the product will become very hard, which will increase the cost.

[0019] Furthermore, the facial mask and the base film are both PVC films; and the paste is PU paste.

[0020] Furthermore, the paste is a water-based PU paste, which includes a water-based PU resin, water and a curing agent in a mass ratio of 100:10~30:4~8. The water-based PU paste does not use organic solvents, has no odor and no harmful substances volatilize, has the characteristics of environmentally friendly production and processing, and the prepared net pool material is softer and more suitable for use as a material for the bottom of the pool. The water-based PU resin can be a commercially available type (water-based polyurethane dispersion), such as HXL-1620A, and the curing agent is a commercially available one suitable for curing water-based PU resins, such as curing agent HXL-103.

[0021] Further, the paste is a solvent-based PU paste, which includes a PU resin, a curing agent, and a solvent in a mass ratio of 100:4~8:50~80. The solvent-based PU paste has a good wetting effect on the mesh and is suitable for use in pool edging. The PU resin can be a commercially available type, such as GS-6028. The curing agent is a commercially available isocyanate curing agent. The solvent is usually butanone, ethyl ester, or a mixture of the two.

[0022] A netted pool material with good dimensional stability is prepared by any of the above-mentioned preparation methods, and comprises a face mask layer, a mesh layer and a bottom film layer which are arranged in sequence.

[0023] Embodiment 1 of the present invention is: A gluing machine comprises a gluing tank 1, an impregnated roller 2 arranged in the gluing tank, and a steel roller 3, a rubber roller 4 and a pressing roller group 5 arranged above the gluing tank from bottom to top; the pressing roller group 5 is composed of two smooth steel rollers whose axes are parallel to each other and located on the same horizontal plane; a feed guide roller 6 is arranged at one end of the gluing tank 2. During use, a mesh cloth 7 passes through the feed guide roller 6, the impregnated roller 2, the steel roller 3, the rubber roller 4 and the pressing roller group 5 in sequence.

[0024] Embodiment 2 of the present invention is: A method for preparing a mesh pool material with good dimensional stability comprises the following steps: The water-based PU paste is placed in the paste tank of the first embodiment, and the mesh is impregnated with the paste machine of the first embodiment, and then dried at 90°C. The PVC face mask and the PVC base film are preheated at 150°C and hot-pressed with the dried paste mesh. The hot-pressing temperature is 170°C and the pressure is 35kgf. Then, the mesh pool material with good dimensional stability is obtained by embossing, cooling, and winding. The water-based PU paste is composed of water-based PU resin, water, and curing agent in a mass ratio of 100:25:7, and the viscosity of the water-based PU paste is 400cps.

[0025] Embodiment three: The difference between Example 3 and Example 2 is that the water-based PU paste is composed of water-based PU resin, water, and curing agent in a mass ratio of 100:10:4, the viscosity of the water-based PU paste is 500cps, the drying temperature is 100°C, and the preheating temperature of the PVC mask and the PVC base film is 170°C.

[0026] Embodiment 4: The difference between Example 4 and Example 2 is that the water-based PU paste is composed of water-based PU resin, water, and curing agent in a mass ratio of 100:30:8, the viscosity of the water-based PU paste is 300cps, the temperature of hot pressing is 175°C, and the pressure is 30kgf.

[0027] Embodiment five: A method for preparing a mesh pool material with good dimensional stability comprises the following steps: The solvent-based PU paste is placed in the paste tank of the first embodiment, and the mesh is impregnated with the paste machine of the first embodiment, and then dried at 120°C. The PVC face mask and the PVC base film are preheated at 160°C and then hot-pressed with the dried paste mesh. The hot-pressing temperature is 180°C and the pressure is 20kgf. Then, the mesh pool material with good dimensional stability is obtained by embossing, cooling, and winding. The solvent-based PU paste is composed of PU resin, curing agent, and solvent in a mass ratio of 100:4:80, and the viscosity of the solvent-based PU paste is 300cps.

[0028] Embodiment six: The difference between Example 6 and Example 5 is that the solvent-based PU paste is composed of PU resin, curing agent and solvent in a mass ratio of 100:6:72, and the viscosity of the solvent-based PU paste is 420cps. The drying temperature is 110°C, and the preheating temperature of the PVC mask and the PVC base film is 165°C.

[0029] Embodiment seven: The difference between Example 7 and Example 5 is that the solvent-based PU paste is composed of PU resin, curing agent and solvent in a mass ratio of 100:8:50, and the viscosity of the solvent-based PU paste is 500 cps.

[0030] In summary, the preparation method provided by the present invention can continuously prepare the mesh pool material in one go. The obtained mesh pool material has good dimensional stability, a smooth surface without bubbles, and strong pressure bearing capacity, and is suitable for preparing a volume greater than 10m 3 Medium and large bracket pools.

[0031] 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 transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for preparing a mesh pool material with good dimensional stability, characterized in that: The following steps are involved: The mesh is impregnated with a paste, dried, and then hot-pressed to the preheated mask and base film.

2. The method for preparing a sandwich pool material with good dimensional stability according to claim 1, characterized in that: The mesh is a warp-knitted polyester mesh, and the tissue density of the mesh is 2.8-8 threads / cm.

3. The method for preparing a mesh pool material with good dimensional stability according to claim 1, characterized in that: The impregnation process is carried out in a pasting machine; The pasting machine comprises a pasting tank, an impregnation roller arranged in the pasting tank, and a steel roller, a rubber roller and a pressure roller group arranged above the pasting tank in sequence from bottom to top.

4. The method for preparing a sandwich pool material with good dimensional stability according to claim 3, characterized in that: A feed guide roller is provided at one end of the paste trough.

5. The method for preparing a mesh pool material with good dimensional stability according to claim 1, characterized in that: The viscosity of the paste is 300-500 cps.

6. The method for preparing a mesh pool material with good dimensional stability according to claim 1, characterized in that: The facial mask and the base film are both PVC films; the paste is PU paste.

7. The method for preparing a mesh pool material with good dimensional stability according to claim 6, characterized in that: The paste is a water-based PU paste, which includes a water-based PU resin, water and a curing agent in a mass ratio of 100:10-30:4-8.

8. The method for preparing a mesh pool material with good dimensional stability according to claim 6, characterized in that: The paste is a solvent-based PU paste, which includes a PU resin, a curing agent and a solvent in a mass ratio of 100:4-8:50-80.

9. A mesh pool material with good dimensional stability, characterized in that: The method is prepared according to any one of claims 1 to 8.

10. The mesh pool material with good dimensional stability according to claim 9, characterized in that: The invention comprises a facial mask layer, a mesh layer and a bottom film layer which are arranged in sequence.

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