Flexible cloth for soft rainwater collecting cistern

Abstract

The utility model relates to the technical field of high polymer material engineering, in particular to flexible cloth for a soft rainwater collecting cistern. The flexible cloth for the soft rainwater collection cistern sequentially comprises a self-cleaning layer, a first polyethylene waterproof layer, a first flexible composite layer, a high-density woven layer, a second flexible composite layer and a second polyethylene waterproof layer from top to bottom. The flexible cloth for the soft rainwater collecting cistern has excellent mechanical property and anti-aging performance, has more excellent waterproof performance and self-cleaning performance, is softer in cloth cover and better in rubbing resistance, and can greatly reduce wrinkles and water leakage caused by rubbing and folding in the using process.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of high polymer material engineering technology, concretely relates to a soft cloth for soft rainwater collection cellar. BACKGROUND

[0002] In order to solve the problems of agricultural irrigation and drinking water for human and livestock in northwest China, a large number of rainwater collection and storage facilities such as water cellar, small water pool and small water pond have been built. However, due to the differences in geological structure, construction and management level in different water shortage areas, rainwater collection and storage facilities mainly in the form of water cellar have problems such as difficult construction, long construction period, high cost, easy water quality deterioration, etc. in varying degrees, especially in high-cold, high-temperature or earthquake-prone areas, the above problems are more prominent. The soft water cellar includes a cellar body buried in the ground and a rainwater collection surface covering the cellar body, and the rainwater collection surface is generally made of high polymer soft material. Compared with the traditional cement-built rainwater collection cellar, the soft rainwater collection cellar collects and stores natural rainfall or surface runoff water through the soft rainwater collection surface or hardened road surface, fully utilizes natural rainfall, realizes the use of autumn rain in spring and abundant rain in drought, does not need to harden the land, greatly reduces the cost, is more environmentally friendly, and the water quality is also cleaner, so the soft rainwater collection cellar is widely used as the second generation of rainwater collection cellar products in China.

[0003] At present, the rainwater collection surface of the soft water cellar is mostly made of PVC composite cloth. Due to the material properties, a large amount of plasticizer and heat stabilizer needs to be added during the processing. At the same time, since the application time of the soft water cellar is generally 5-10 years, the plasticizer and heat stabilizer and other additives are easy to precipitate into water, which produces biological toxicity and is not conducive to human health. The polyethylene composite cloth has the characteristics of environmental protection, non-toxicity and easy recycling, and is more suitable for application as the soft water cellar. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a kind of soft rainwater collection cellar flexible cloth, with High Strength, Strong Tensile, Not Cracking, Rubbing, Not Leaking, Suitable for long time application in water storage environment.

[0005] According to the soft rainwater collection cellar flexible cloth of the utility model embodiment, the flexible cloth includes from top to bottom: self-cleaning layer, first polyethylene waterproof layer, first flexible composite layer, high-density woven layer, second flexible composite layer and second polyethylene waterproof layer, wherein,

[0006] The material of the self-cleaning layer is organic silicon resin;

[0007] The lower surface of the self-cleaning layer is provided with the first polyethylene waterproof layer, and the material of the first polyethylene waterproof layer is low-density polyethylene;

[0008] The first polyethylene waterproof layer is bonded and compounded with the high-density woven layer through the first flexible composite layer,

[0009] The material of the first flexible layer is EVA (ethylene-vinyl acetate copolymer) ;

[0010] The material of the high-density woven layer is high-density polyethylene;

[0011] The high-density woven layer is bonded and compounded with the second polyethylene waterproof layer through the second flexible composite layer;

[0012] The material of the second flexible composite layer is EVA;

[0013] The material of the second polyethylene waterproof layer is low-density polyethylene.

[0014] According to the flexible cloth for soft rainwater collection cellar according to the specific embodiment of the utility model, the thickness of the self-cleaning layer is 0.005-0.01 mm. Organic silicon resin is sprayed on the surface of the first flexible layer, and a 0.005-0.01 mm thick self-cleaning layer is formed. By utilizing the hydrophobic property of organic silicon resin, the attachment of impurities in water bodies can be reduced, good self-cleaning effect is achieved, the cleanliness of the water cellar is maintained, and the flexible cloth is protected from water.

[0015] According to the flexible cloth for soft rainwater collection cellar according to the specific embodiment of the utility model, the thickness of the first polyethylene waterproof layer is 0.03-0.05 mm.

[0016] According to the flexible cloth for soft rainwater collection cellar according to the specific embodiment of the utility model, the thickness of the second polyethylene waterproof layer is 0.03-0.05 mm.

[0017] The first polyethylene waterproof layer and the second polyethylene waterproof layer are used as the inner layer of the flexible cloth, and low-density polyethylene is used, so that the waterproof and protection of the strength of the high-density woven layer can be achieved.

[0018] According to the flexible cloth for soft rainwater collection cellar according to the specific embodiment of the utility model, the thickness of the first flexible composite layer is 0.02-0.03 mm.

[0019] According to the flexible cloth for soft rainwater collection cellar according to the specific embodiment of the utility model, the thickness of the second flexible composite layer is 0.02-0.03 mm.

[0020] The first flexible composite layer and the second flexible composite layer are made of EVA raw materials, are directly bonded with the high-density woven layer, have the functions of increasing flexibility and heat preservation, and the flexible composite layer is prepared by using a matte roller, the surface of the flexible composite layer has a sandpaper texture, and has better bonding performance and heat preservation performance.

[0021] According to the flexible cloth for soft rainwater collection cellar according to the specific embodiment of the utility model, the thickness of the high-density woven layer is 0.2-0.3 mm.

[0022] The high-density woven layer is obtained by casting and drawing of high-density polyethylene, and the surface flatness is increased by anti-leaching treatment, and the high-density woven layer has excellent mechanical strength, excellent tensile tear performance and good aging resistance, and can maintain the strength of the flexible cloth for a long time.

[0023] The soft flexible cloth for rainwater collection cellar has the beneficial effects of the utility model:

[0024] The soft flexible cloth for rainwater collection cellar has excellent mechanical properties and anti-aging properties, has more excellent waterproof performance and self-cleaning performance, the cloth surface is softer, the rubbing resistance is better, and the leakage caused by rubbing and folding during use can be greatly reduced.

[0025] According to the measurement, the hydrostatic pressure of the soft flexible cloth for rainwater collection cellar hardly decreases after 1000 times of flexing, and the hydrostatic pressure can still be maintained at more than 20000mm H2O after about 3000 times of flexing, which is significantly improved compared with the PE showering membrane tarpaulin with the same grammage. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0027] Figure 1 It is a structural schematic view of the soft flexible cloth for rainwater collection cellar of the utility model;

[0028] 1-self-cleaning layer; 2-first polyethylene waterproof layer; 3-first flexible composite layer; 4-high-density woven layer; 5-second flexible composite layer; 6-second polyethylene waterproof layer. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the utility model more clear, the technical scheme of the utility model will be described in detail below. Obviously, the described embodiments are only some embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope protected by the utility model.

[0030] It should be noted that in the embodiments of the present application, all directional indications (such as up, down, left, right, front, back, etc.) are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly. In the present application, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the device or system comprising a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such device or system.

[0031] The utility model provides a kind of soft rainwater harvesting cellar flexible cloth, including following multilayer structure:

[0032] 1 layer: self-cleaning layer (0.005-0.01mm): it is implemented in cloth surface by adopting organic silicon resin spraying to form self-cleaning layer, due to its hydrophobic characteristics, reduce the impurities in water body attachment, play good self-cleaning effect, keep the cleanliness of water cellar, simultaneously, it also plays the role of water protection to PE cloth.

[0033] 2 layer and 6 layer: polyethylene waterproof layer (0.03mm-0.05mm): as the inner layer of water cellar cloth, using LDPE as main material, play the role of waterproof, protect the strength of framework layer.

[0034] 3 layer and 5 layer: flexible composite layer (0.02mm-0.03mm): mainly using EVA raw material, directly bonding with the high-strength woven cloth layer in the middle, play the role of flexibility and heat preservation, and the layer uses matte roller, so that the surface presents sandpaper texture, and the outer layer composite has better adhesive property and heat preservation property.

[0035] 4 layer: high-density woven layer (0.2mm-0.3mm): using flow casting wire drawing and warping to obtain 24*24 high-density woven to obtain framework layer, then after anti-permeation treatment, increase the flatness of surface, so that, have excellent mechanical strength, excellent tensile tear performance, good aging resistance, can maintain the strength of cloth for a long time.

[0036] Example 1

[0037] The utility model discloses a kind of soft rainwater harvesting cellar flexible cloth, from top to bottom sequentially include: self-cleaning layer 1, first polyethylene waterproof layer 2, first flexible composite layer 3, high-density woven layer 4, second flexible composite layer 5 and second polyethylene waterproof layer 6. Among them, the lower surface of the self-cleaning layer 1 is provided with the first polyethylene waterproof layer 2, the first polyethylene waterproof layer 2 is bonded and compounded with the high-density woven layer 4 by the first flexible composite layer 3, and the high-density woven layer 4 is bonded and compounded with the second polyethylene waterproof layer 6 by the second flexible composite layer 5.

[0038] The material of the self-cleaning layer is silicone resin; the silicone resin is sprayed on the surface of the first flexible layer to form a 0.005-0.01mm-thick self-cleaning layer; the hydrophobic property of the silicone resin can reduce the adhesion of impurities in water, achieve good self-cleaning effect, maintain the cleanliness of the water cellar, and protect the flexible cloth from water.

[0039] The material of the first and second polyethylene waterproof layers is low-density polyethylene, and the thickness is 0.03mm-0.05mm. The first and second polyethylene waterproof layers, as the inner layers of the flexible cloth, are made of low-density polyethylene, which can play the roles of waterproofing and protecting the strength of the high-density woven layer.

[0040] The material of the first and second flexible layers is EVA, and the thickness is 0.02mm-0.03mm. The first and second flexible composite layers are made of EVA, which is directly bonded with the high-density woven layer to play the roles of flexibility and heat preservation. The flexible composite layer is prepared by a matte roller, and the surface of the flexible composite layer has a sandpaper texture, better bonding performance and heat preservation performance.

[0041] The material of the high-density woven layer is high-density polyethylene; the high-density woven layer is obtained by flow casting, drawing and warping of high-density polyethylene, and the surface flatness is increased by anti-leaching treatment. The high-density woven layer has excellent mechanical strength, excellent tensile tear performance, good aging resistance, and can maintain the strength of the flexible cloth for a long time.

[0042] The preparation method of the flexible soft water cellar cloth comprises the following steps: a high-density polyethylene woven cloth is obtained by drawing, warping and weaving of high-density polyethylene; a high-density woven skeleton layer is pretreated to form a flat base cloth; a flexible composite layer is once double-sidedly coated and compounded on the high-density woven layer; a net line roller is used for winding, and a surface layer with a frosted structure is formed on the surface of the flexible composite layer; a second coating and compounding of a polyethylene composite layer are performed, and a normal light roller is used for winding; an organic silicon resin is sprayed on the surface of the inner layer by spraying process to form a hydrophobic self-cleaning layer; and the product is obtained by drying and winding.

Claims

1. A flexible fabric for use in soft rainwater harvesting cellars, characterized in that, The flexible fabric comprises, from top to bottom: a self-cleaning layer, a first polyethylene waterproof layer, a first flexible composite layer, a high-density woven layer, a second flexible composite layer, and a second polyethylene waterproof layer, wherein... The self-cleaning layer is made of silicone resin; The lower surface of the self-cleaning layer is provided with a first polyethylene waterproof layer, which is made of low-density polyethylene. The first polyethylene waterproof layer is bonded to the high-density woven layer through the first flexible composite layer. The first flexible composite layer is made of EVA. The high-density woven layer is made of high-density polyethylene; The high-density woven layer is bonded to the second polyethylene waterproof layer through a second flexible composite layer; The second flexible composite layer is made of EVA. The second polyethylene waterproof layer is made of low-density polyethylene.

2. The flexible fabric for soft rainwater harvesting cellars according to claim 1, characterized in that, The thickness of the self-cleaning layer is 0.005-0.01 mm.

3. The flexible fabric for soft rainwater harvesting cellars according to claim 1, characterized in that, The thickness of the first polyethylene waterproof layer is 0.03mm-0.05mm.

4. The flexible fabric for soft rainwater harvesting cellars according to claim 1, characterized in that, The thickness of the second polyethylene waterproof layer is 0.03mm-0.05mm.

5. The flexible fabric for soft rainwater harvesting cellars according to claim 1, characterized in that, The thickness of the first flexible composite layer is 0.02mm-0.03mm.

6. The flexible fabric for soft rainwater harvesting cellars according to claim 1, characterized in that, The thickness of the second flexible composite layer is 0.02mm-0.03mm.

7. The flexible fabric for soft rainwater harvesting cellars according to claim 1, characterized in that, The thickness of the high-density braided layer is 0.2mm-0.3mm.

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