A flexible, spunlace pool material and method of making the same

Abstract

The application discloses a flexible net sandwich pool material and a preparation method thereof, and belongs to the technical field of net sandwich materials. The preparation method adopts paste to perform shaping treatment on a loose net cloth, then performs drying, and then performs hot pressing and lamination with a preheated surface film and a bottom film. The preparation method of the flexible net sandwich pool material provided by the application can make the paste fully penetrate into the loose net cloth and uniformly adhere to the loose net cloth through twice pressing, so that a good yarn fixing effect is achieved. The obtained flexible net sandwich pool material is soft, has good folding resistance, is particularly suitable for preparing small support pools with a size less than 10 m 3 , and has the characteristics of low cost.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of sandwich materials, and particularly relates to a flexible sandwich pool material and a preparation method thereof. BACKGROUND

[0002] The support pool is a common temporary or mobile water storage facility, which is mainly composed of a steel frame and a waterproof cloth. The support pool is suitable for outdoor places such as parks, squares and farmlands. In summer, the support pool can provide a place for people to play water and swim, such as the simple dismountable swimming pool disclosed in the Chinese utility model patent with the application number 200720053759.1. The support pool can also be used for the water storage part of an irrigation system. The waterproof cloth of the support pool is usually a sandwich pool material composed of a mesh cloth and a film, and the film provides good waterproof performance for the mesh cloth.

[0003] For a small support pool with a volume less than 10 m 3 , the mesh cloth needs to be soft and have good folding resistance because it needs to be folded and stored frequently. SUMMARY

[0004] The technical problem to be solved by the present application is:

[0005] In order to solve the above technical problem, the technical scheme adopted by the present application is as follows: a preparation method of a flexible sandwich pool material, comprising the following steps: using a paste to perform a shaping treatment on a thin mesh cloth, then drying, and then hot pressing and bonding the dried thin mesh cloth with a preheated top film and a bottom film.

[0006] The shaping treatment is performed in a roller-type pasting machine.

[0007] The roller-type pasting machine comprises a paste groove, a pressure roller arranged in the paste groove, and a steel roller, a first rubber roller and a second rubber roller arranged in sequence from bottom to top above the paste groove.

[0008] Another technical scheme adopted by the present application is to provide a flexible sandwich pool material prepared by the above preparation method.

[0009] The flexible sandwich pool material provided by the present application has the advantages that: the preparation method of the flexible sandwich pool material provided by the present application can make the paste fully penetrate into the thin mesh cloth and uniformly adhere to the thin mesh cloth through two pressing processes, so that a good yarn fixing effect is achieved. The obtained flexible sandwich pool material is soft and has good folding resistance, and is particularly suitable for preparing a small support pool with a volume less than 10 m 3 . BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is a front view of the roller-type pasting machine of the specific embodiment of the present application.

[0011] Figure 2A structural schematic diagram of a roll-type pasting machine according to the embodiment of the present application;

[0012] Figure 3 A room temperature static cross-fold test diagram of the example according to the embodiment of the present application;

[0013] Figure 4 A room temperature static cross-fold test diagram of the comparative example according to the embodiment of the present application; label explanation:

[0014] 1, paste groove; 2, compression roller; 3, steel roller; 4, first rubber roller; 5, second rubber roller; 6, feeding guide roller; 7, discharging guide roller; 8, sparse mesh cloth. EMBODIMENT

[0015] In order to make the technical content of the present application, the purposes and effects achieved more clear, the following will be described in detail in combination with the embodiments and the accompanying drawings.

[0016] A preparation method of a flexible net sandwich pool material, comprising the following steps: using paste to perform shaping treatment on a sparse mesh cloth, then drying, and then hot pressing and pasting with a preheated surface film and a bottom film.

[0017] From the above description, it can be seen that the preparation method of the flexible net sandwich pool material provided by the present application uses a sparse mesh cloth as a base cloth, the paste is fully penetrated and evenly attached to the sparse mesh cloth through two times of pressing, the mesh cloth is not easy to deform and has small damage in the whole processing process, the obtained net sandwich pool material is soft and has good folding resistance, and no creases or wear are easy to appear at the folded part after multiple foldings, and the method is particularly suitable for preparing small-sized support pools with a size of less than 10 m 3 . The raw material cost of the sparse mesh cloth used in the whole product preparation process is low, and the paste amount is small, so that the overall raw material cost is low, and the whole process is one-time composite forming, which is efficient in production and effectively reduces the cost of the product.

[0018] Further, the drying temperature is 110-130℃, the preheating temperature is 150-170℃, and the hot pressing and pasting temperature is 170-185℃, and the pressure is 20-30kgf.

[0019] Further, the sparse mesh cloth is a warp-knitted polyester mesh cloth woven by yarns with a fineness of 1000D or less (including 1000D).

[0020] Further, the organization density of the sparse mesh cloth is 2-3.6 roots / cm

[0021] The warp-knitted polyester mesh cloth with a fineness of 1000D or less and an organization density of 2-3.6 roots / cm can ensure that the obtained net sandwich pool material is still relatively soft after pasting and pasting.

[0022] Further, the sizing treatment is performed in a roller type pasting machine; refer to Figure 1 and 2 As shown, the roller type pasting machine includes a pasting groove, a compression roller arranged in the pasting groove, and a steel roller, a first rubber roller and a second rubber roller arranged in sequence from bottom to top above the pasting groove. The arrangement of the two rubber rollers further controls the amount of pasting, and the surface texture of the rubber rollers is finer, and the two rubber rollers cooperate to make the pasting more uniform.

[0023] Further, the pasting groove is provided with an inlet guide roller at one end, and the second rubber roller is provided with an outlet guide roller above. The inlet guide roller and the outlet guide roller are used to guide the thin mesh into and out of the roller type pasting machine, realizing continuous production.

[0024] Further, the viscosity of the paste is 200-500 cps. The viscosity of the paste should not be too high, and the paste with too high viscosity is easy to cause the amount of pasting to be too large, which is not easy to dry, and the paste accumulates on the guide roller, seriously affecting production; at the same time, in order to achieve the effect of drying, it is necessary to increase the temperature, due to the characteristics of the thin mesh, the increase of the temperature will further cause the mesh to shrink and deform, resulting in uneven mesh after compounding, and rough surface effect; in addition, the increase of the amount of pasting and the decrease of the drying efficiency will further cause the production rate to slow down, the cost to increase, and the problem of air bubbles after lamination to be easy to cause.

[0025] Further, the face film and the bottom film are both PVC films; the paste includes E-PVC paste resin, plasticizer and liquid stabilizer in a mass ratio of 100:100-150:2-4, and adhesive accounting for 4-8% of the total mass of the paste. The adhesive is a conventional commercially available PVC crosslinking agent, and the liquid stabilizer is a conventional commercially available barium-zinc composite stabilizer. The viscosity of the paste with the above-mentioned formula is 200-500 cps, which is much lower than the viscosity of 1000 cps or more of general E-PVC paste, and can cooperate with the above-mentioned roller type pasting machine to realize a small amount of pasting of only 20-40 gsm. The paste with high viscosity cannot achieve a small amount of pasting, which will further affect the roller type pasting machine and cause paste accumulation, affecting the production process and leading to a decrease in efficiency; at the same time, it will affect the subsequent drying, and it is necessary to cooperate with the viscosity to increase the drying temperature, and the too high drying temperature will cause the deformation of the thin mesh, resulting in uneven mesh and rough surface effect of the final compounded product, and easy to cause the problem of air bubbles after lamination.

[0026] Further, the E-PVC paste resin is an E-PVC paste resin with a polymerization degree of 1000-1300.

[0027] The above-mentioned paste can provide good lamination capacity and yarn fixing effect, cooperate with two times of pressing to ensure that it is not easy to generate fluff in the subsequent cutting process, and the paste does not contain solvent, which is more environmentally friendly in production and use.

[0028] A flexible net-padded pool material prepared by any of the above preparation methods, comprising a film layer, a mesh layer and a bottom film layer arranged in sequence.

[0029] Example 1:

[0030] Please refer to Figure 1 and 2 A roll-type pasting machine comprises a paste groove 1, a compression roller 2 arranged in the paste groove, and a steel roller 3, a first rubber roller 4 and a second rubber roller 5 arranged in sequence from bottom to top above the paste groove; the paste groove is provided with an inlet guide roller 6 at one end, and the second rubber roller 5 is provided with an outlet guide roller 7 above it. During shaping treatment, the loose mesh 8 passes through the inlet guide roller 6, the compression roller 2 in the paste groove, the steel roller 3, the first rubber roller 4, the second rubber roller 5 and the outlet guide roller 7 in sequence.

[0031] Example 2:

[0032] A preparation method of a flexible net-padded pool material, comprising the following steps: injecting paste into the paste groove of the roll-type pasting machine of Example 1, shaping treatment of the loose mesh, and then drying at 120℃; preheating the PVC film and the PVC bottom film at 160℃, then hot pressing and laminating the pasted loose mesh after drying with the preheated film and bottom film at 175℃ and 20kgf, and then passing through embossing, cooling and winding in sequence to obtain a low-cost flexible net-padded pool material; the low-cost flexible net-padded pool material comprises a film layer, a mesh layer and a bottom film layer arranged in sequence;

[0033] The loose mesh is a warp-knitted polyester mesh woven by 500D yarn, and the organization density is 3.6 roots / cm;

[0034] The paste is composed of E-PVC paste resin with a polymerization degree of 1300, DOTP and liquid stabilizer with a mass ratio of 100:130:2, and an adhesive accounting for 6% of the total mass of the paste, and the viscosity of the paste is 300cps.

[0035] Example 3:

[0036] A preparation method of a flexible net-padded pool material, comprising the following steps: injecting paste into the paste groove of the roll-type pasting machine of Example 1, shaping treatment of the loose mesh, and then drying at 130℃; preheating the PVC film and the PVC bottom film at 170℃, then hot pressing and laminating the pasted loose mesh after drying with the preheated film and bottom film at 170℃ and 30kgf, and then passing through embossing, cooling and winding in sequence to obtain a low-cost flexible net-padded pool material; the low-cost flexible net-padded pool material comprises a film layer, a mesh layer and a bottom film layer arranged in sequence;

[0037] The loose mesh is a warp-knitted polyester mesh woven by 1000D yarn, and the organization density is 2 roots / cm;

[0038] The paste is composed of E-PVC paste resin with a polymerization degree of 1000, DOTP and liquid stabilizer with a mass ratio of 100:100:3, and 4% of the total mass of the paste as adhesive, and the viscosity of the paste is 500 cps.

[0039] Example 4:

[0040] A preparation method of a flexible net sandwich pool material, comprising the following steps: injecting a paste into a paste groove of the roll type pasting machine in Example 1, performing shaping treatment on the sparse net cloth, and then drying at 110 DEG C; preheating a PVC top film and a PVC bottom film at 150 DEG C, then hot pressing and laminating the dried paste sparse net cloth with the preheated top film and bottom film at 185 DEG C and 25 kgf, and then sequentially performing embossing, cooling and winding to obtain a low-cost flexible net sandwich pool material; the low-cost flexible net sandwich pool material comprises a top film layer, a net cloth layer and a bottom film layer arranged in sequence.

[0041] The sparse net cloth is a warp-knitted polyester net cloth knitted by 500D yarn, and the organization density is 3 roots / cm.

[0042] The paste is composed of E-PVC paste resin with a polymerization degree of 1100, DOTP and liquid stabilizer with a mass ratio of 100:150:4, and 8% of the total mass of the paste as adhesive, and the viscosity of the paste is 200 cps.

[0043] Comparative Example 1:

[0044] The difference between Comparative Example 1 and Example 4 is that the commercially available PU paste is used instead of the paste of Example 4.

[0045] The net sandwich pool materials obtained in Example 4 and Comparative Example 1 are subjected to room temperature static cross folding comparison test, and the results of Example 4 are shown in Figure 3 , and the results of Comparative Example 1 are shown in Figure 4 . Referring to Figure 3 and Figure 4 the part circled by the red frame, it can be seen that the crease at the folding tip angle of Comparative Example 1 is obvious and not easy to recover, while the tip angle of Example 4 is small and recovers quickly. It shows that the flexible net sandwich pool material obtained by the preparation method of the flexible net sandwich pool material has good folding resistance.

[0046] In summary, the preparation method is easy to operate and process, does not use paste with volatile solvent, is friendly to workers, does not need to use needle plate chain in the preparation process, and can be processed and transported by the cooperation of the roll type pasting machine and other roller groups. Through the cooperation of each roller of the roll type pasting machine, the effect of fully impregnating and uniformly adhering a small amount of paste on the sparse net cloth can be achieved, thereby ensuring that the obtained net sandwich pool material has a smooth surface without bubbles, and is soft and fold-resistant.

[0047] The above merely illustrates the embodiments of the present application, and is not intended to limit the patent scope of the present application. Any equivalent transformation or direct or indirect application in the related technical field based on the content of the present application specification and drawings is also included in the patent protection scope of the present application.

Claims

1. A method for preparing a flexible mesh-reinforced water tank material, characterized in that, Includes the following steps: The thin mesh fabric is shaped using a paste, then dried, and then hot-pressed together with the preheated face film and base film. The shaping process is carried out in a roller pasting machine; The roller pasting machine includes a paste trough, a pressure roller disposed in the paste trough, and a steel roller, a first rubber roller, and a second rubber roller disposed sequentially above the paste trough from bottom to top. The viscosity of the paste is 200~500 cps; Both the face mask and the base mask are PVC films; The paste comprises E-PVC paste resin, plasticizer, and liquid stabilizer in a mass ratio of 100:100~150:2~4, and an adhesive accounting for 4~8% of the total mass of the paste. The E-PVC paste resin is an E-PVC paste resin with a degree of polymerization of 1000~1300.

2. The method for preparing the flexible mesh-reinforced water tank material according to claim 1, characterized in that, The thin mesh fabric is a warp-knitted polyester mesh fabric woven from yarn with a density of 1000D or less.

3. The method for preparing the flexible mesh-coated water tank material according to claim 1, characterized in that, The fabric density is 2~3.6 threads / cm.

4. The method for preparing the flexible mesh-coated water tank material according to claim 1, characterized in that, The paste trough is provided with a feed guide roller at one end, and a discharge guide roller is provided above the second glue roller.

5. A flexible mesh-lined water tank material, characterized in that, It is prepared by the preparation method according to any one of claims 1 to 4.

6. The flexible mesh-coated water tank material according to claim 5, characterized in that, It includes a face mask layer, a mesh layer, and a base mask layer arranged in sequence.

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