High-strength, wear-resistant, and weather-resistant geotextiles

Abstract

A high-strength, abrasion-resistant, and weather-resistant geotextile fabric comprises multiple warp units and multiple weft units interwoven with the warp units. Each warp unit includes at least one warp monofilament fiber. Each weft unit includes at least one weft monofilament fiber. The high-strength, abrasion-resistant, and weather-resistant geotextile fabric has a warp density of 20 to 600 warp monofilament fibers per inch, with each warp monofilament fiber having a fineness between 501 and 3000 denier. The weft density has a weft density of 150 to 2000 weft monofilament fibers per inch, with each weft monofilament fiber having a fineness between 50 and 1000 denier. Therefore, the geotextile fabric can improve abrasion and weather resistance, and while maintaining strength and good water permeability, it can also maintain small average pore size, achieving a good filtration effect.

Description

Technical Field

[0001] This invention relates to a geotextile, and more particularly to a high-strength, abrasion-resistant, and weather-resistant geotextile. Background Technology

[0002] The main functions of geotextiles include reinforcement, isolation, and filtration. Their strength, permeability, and characteristic pore size are key factors determining product performance. These fundamental properties not only affect the stability and durability of geotextiles in engineering projects but also directly relate to their ability to perform their designed functions under various environmental conditions. In practical applications, the performance of geotextiles can be affected by abrasion during construction or long-term exposure to ultraviolet radiation from sunlight; therefore, their abrasion resistance and weather resistance are equally crucial. For example, heavy equipment during construction may damage the surface of geotextiles, while prolonged exposure to sunlight can lead to material aging and performance degradation.

[0003] Especially when geotextiles are made into bag-type products such as geotextile sandbags, their application scenarios and functional requirements become more complex. Geotextile sandbags not only need to perform the dual functions of filling and filtering, but also need to maintain a stable filtration effect while withstanding high load pressure. Therefore, these products place higher demands on the strength, permeability, and filtration capacity of geotextiles.

[0004] Furthermore, in some applications, these products may be exposed to harsh outdoor environments for extended periods, such as in coastal, riverine, or wetland projects. They must withstand not only strong water currents and impacts from floating debris, but also extreme weather and direct sunlight. Therefore, improving the abrasion resistance and weather resistance of geotextiles is particularly important. In summary, the design of geotextiles needs to be tailored to specific application requirements. In addition to fulfilling basic reinforcing, insulating, and filtering functions, they must achieve higher standards in durability and resistance to environmental impacts to ensure their reliability and long-term stability under various environmental conditions.

[0005] Current industries commonly use fiber monofilaments (such as round yarn, flat yarn, sliced ​​yarn), fine fiber (fine denier) multifilaments, and split film yarns to improve the abrasion resistance of fabrics. The method is to combine woven and non-woven fabrics into composite fabrics by needle punching, adhesive bonding, or sewing. However, non-woven fibers are extremely fine and are more easily worn and sacrificed, becoming plastic debris.

[0006] Existing geotextiles and geotextile sandbags, used in river or coastal protection projects, are frequently exposed to direct sunlight during use. When using monofibrils, fibers with low denier, or thin structures, photo-oxidation easily occurs, causing molecular bond breakage and leading to a decline in material strength and damage to the geotextile sandbag material, resulting in filler loss. In addition, repeated impacts from water currents and waves often carry silt, garbage, and debris, causing abrasion on the surface of the geotextile sandbags. This can range from minor abrasion and fraying to severe fiber breakage, causing the bag to rupture and resulting in filler loss. Summary of the Invention

[0007] The purpose of this invention is to provide a high-strength, wear-resistant, and weather-resistant geotextile fabric that can improve upon at least one of the aforementioned shortcomings.

[0008] This invention relates to a high-strength, abrasion-resistant, and weather-resistant geotextile fabric, comprising multiple warp units and multiple weft units interwoven with the warp units. Each warp unit includes at least one warp monofilament fiber, and each weft unit includes at least one weft monofilament fiber. The high-strength, abrasion-resistant, and weather-resistant geotextile fabric has a warp density of 20 to 600 warp monofilament fibers per inch, with each warp monofilament fiber having a fineness between 501 and 3000 denier. The weft density has a weft density of 150 to 2000 weft monofilament fibers per inch, with each weft monofilament fiber having a fineness between 50 and 1000 denier. In one weave cycle, the ratio of the number of warp weave points to the total number of weave points is greater than 70%.

[0009] The high-strength, abrasion-resistant, and weather-resistant geotextile fabric of the present invention has a warp density of 40 to 600 warp monofilaments per inch, and the fineness of each of the weft monofilaments is between 50 and 500 deniers.

[0010] The high-strength, wear-resistant, and weather-resistant ground fabric of the present invention has warp yarn units and weft yarn units interwoven into an m / n twill structure, wherein the ratio of m to n is greater than or equal to 3.

[0011] The high-strength, wear-resistant, and weather-resistant geotextile fabric of the present invention has a p-p satin weave structure formed by the interlacing of the warp yarn unit and the weft yarn unit, where p is greater than or equal to 5.

[0012] The high-strength, abrasion-resistant, and weather-resistant geotextile fabric of this invention has a characteristic pore size between 0.075 mm and 0.4 mm (measured according to test standard ISO 12956).

[0013] The high-strength, abrasion-resistant, and weather-resistant geotextile fabric of this invention has an abrasion resistance greater than 90% (measured according to the test standard ASTM D4886).

[0014] The high-strength, abrasion-resistant, and weather-resistant geotextile fabric of this invention has a water permeability greater than 40 L / m. 2 / s (measured according to test standard ISO11058).

[0015] The high-strength, abrasion-resistant, and weather-resistant geotextile fabric of this invention has a UV resistance strength greater than 98% after 500 hours of exposure (measured according to test standard ASTM D4355) and a UV resistance strength greater than 90% after 6000 hours of exposure (measured according to test standard ASTM D4355).

[0016] The high-strength, abrasion-resistant, and weather-resistant geotextile fabric of this invention has a tensile strength between 100kN / m and 400kN / m (measured according to test standards ISO 10319 or ASTM D4595).

[0017] The beneficial effects of the present invention are as follows: by interweaving the warp monofilament fibers with a fineness between 501 and 3000 denier and the weft monofilament fibers with a fineness between 50 and 1000 denier, the warp density contains 20 to 600 warp monofilament fibers per inch and the weft density contains 150 to 2000 weft monofilament fibers per inch, thereby improving wear resistance, weather resistance and sun protection, reducing material wear and aging problems, and maintaining small average pore size while taking into account strength and good water permeability, thus achieving a good filtration effect. Attached Figure Description

[0018] Figure 1 This is a plan view of the first embodiment of the high-strength, wear-resistant, and weather-resistant geotextile of the present invention; Figure 2 It is along Figure 1 The sectional view obtained from line II-II in the diagram; Figure 3 It is along Figure 1 The sectional view obtained from line Ⅲ-Ⅲ in the diagram; Figure 4 This is a schematic diagram of an organizational cycle in the first embodiment; Figure 5 This is a plan view of the second embodiment of the high-strength, wear-resistant, and weather-resistant geotextile of the present invention; Figure 6 It is along Figure 5 The sectional view obtained from line VI-VI in the diagram; Figure 7 It is along Figure 5 The sectional view obtained from line VII-VII in the diagram; Figure 8 This is a schematic diagram of a weave cycle of the third embodiment of the high-strength, wear-resistant, and weather-resistant geotextile of the present invention; Figure 9This is a schematic diagram of a weave cycle of the fourth embodiment of the high-strength, wear-resistant, and weather-resistant geotextile of the present invention; Figure 10 This is a schematic diagram of a weave cycle of the fifth embodiment of the high-strength, abrasion-resistant, and weather-resistant geotextile of the present invention; and Figure 11 This is a schematic diagram of a weave cycle of the sixth embodiment of the high-strength, wear-resistant, and weather-resistant geotextile of the present invention. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] Before the invention is described in detail, it should be noted that similar components are represented by the same numbers in the following description.

[0021] See Figures 1 to 3 The first embodiment of the high-strength, wear-resistant, and weather-resistant geotextile of the present invention includes a plurality of warp units 1 and a plurality of weft units 2 interwoven with the warp units 1. Figure 1 The diagram shows a weaving cycle of the first embodiment. A warp weaving point 31 is defined as the portion of each warp unit 1 that floats above each weft unit 2, and a weft weaving point 32 is defined as the portion of each weft unit 2 that floats above each warp unit 1.

[0022] See Figure 4 The structure of the fabric loop comprises 64 squares arranged in an 8x8 array. Each colored square represents a weft weft point 32, and each white square represents a warp weft point 31. The side where the warp monofilament fibers 11 are concentrated is defined as a first side surface, and the other side where the weft monofilament fibers 21 are concentrated is defined as a second side surface. The ratio of the number of warp weft points 31 to the total number of weft points (the sum of warp weft points 31 and weft weft points 32) on the first side surface of the fabric loop is defined as the coverage rate. The ratio of the number of warp weft points 31 to the total number of weft points is greater than 70%. Specifically, the total number of weft points is 64, and the number of warp weft points 31 is 56. Therefore, the coverage rate in this embodiment is 56 divided by 64, which is 87.5%.

[0023] In this embodiment, the warp unit 1 and the weft unit 2 are interwoven into a p-count satin weave structure. That is, each weft unit 2 passes under (p-1) warp units 1 and then passes over one warp unit 1. In the p-count satin weave, the coverage rate is (p-1) / p. If the coverage rate needs to be greater than 70%, then p needs to be greater than 10 / 3. In this embodiment, p is greater than or equal to 5, specifically, p equals 8. The warp unit 1 and the weft unit 2 are interwoven into an 8-count 3-fly satin weave structure, where 3fly represents that the two adjacent weft weft stitch points 32 on two adjacent warp units 1 are spaced apart by two weft units 2.

[0024] See also Figures 1 to 3 Each warp unit 1 includes two warp monofilament fibers 11. Each weft unit 2 is wide and flat and includes multiple weft monofilament fibers 21. In this embodiment, the coverage is greater than 70%, meaning that the ratio of the area of ​​the warp monofilament fibers 11 on the first side to the overall area of ​​the weave loop is greater than 70%, and the warp monofilament fibers 11 cover most of the weft monofilament fibers 21.

[0025] The warp density of the fabric is 20 to 600 warp monofilaments 11 per inch, and the fineness of each warp monofilament 11 is between 501 and 3000 deniers. The weft density of the fabric is 150 to 2000 weft monofilaments 21 per inch, and the fineness of each weft monofilament 21 is between 50 and 1000 deniers. In one embodiment, the warp density of the fabric is 40 to 600 warp monofilaments 11 per inch, and the fineness of each weft monofilament 21 is between 50 and 500 deniers. Specifically, each warp monofilament 11 and each weft monofilament 21 is a polymer, such as polypropylene (PP), polyethylene terephthalate (PET), or polyethylene (PE), etc.

[0026] The geotextile can be made into a geotextile sandbag (not shown), with the first side located on the outer side and the second side located on the inner side. Because the warp monofilament fibers 11 have a large diameter (high denier) and an arc-shaped surface, and cover a high proportion of the weft monofilament fibers 21, the total exposed surface area of ​​the weft monofilament fibers 21 is small, resulting in less exposure to sunlight and thus better durability. The finer weft monofilament fibers 21 are concentrated on the inner side, further preventing abrasion from contact with external objects. When the geotextile sandbag is filled with filler and used in river or coastal protection projects, it can withstand long-term sun exposure. When subjected to long-term scouring and pounding by water currents or waves, it also reduces abrasion caused by silt, garbage, or debris in the water, preventing the sandbag from breaking and causing the internal filler to leak out. Therefore, the geotextile or the geotextile sandbag has excellent abrasion resistance and weather resistance.

[0027] Furthermore, by interlacing the high denier warp monofilament 11 with the low denier weft monofilament 21, the geotextile fabric can maintain a small average pore size while taking into account both strength and good water permeability, thus achieving a good filtration effect.

[0028] In this embodiment, the tensile strength of the geotextile is between 100 kN / m and 400 kN / m (measured according to test standards ISO 10319 or ASTM D4595), specifically, the tensile strength of the geotextile is 120 kN / m. The abrasion resistance of the geotextile is greater than 85% (measured according to test standard ASTM D4886), its UV resistance after 500 hours is greater than 98% (measured according to test standard ASTM D4355), its UV resistance after 6000 hours is greater than 90% (measured according to test standard ASTM D4355), and its water permeability is greater than 40 L / m². 2 / s (measured according to test standard ISO 11058). The characteristic pore size of the geotextile is between 0.075 mm and 0.4 mm (measured according to test standard ISO 12956). In one embodiment, the characteristic pore size of the geotextile is between 0.2 mm and 0.4 mm. Specifically, the characteristic pore size of the geotextile is 0.25 mm.

[0029] Existing geotextiles have abrasion resistance of approximately 70% to 80%, UV resistance after 500 hours of exposure is approximately 70% to 90%, and water permeability is approximately 12.5 to 25 L / m². 2 The performance is between / s. Therefore, this embodiment has better performance in abrasion resistance, UV resistance and water permeability compared to existing geotextiles.

[0030] It should be noted that the high-strength, abrasion-resistant, and weather-resistant geotextile of the present invention does not limit the number of warp monofilament fibers 11 in each warp unit 1, nor the number of weft monofilament fibers 21 in each weft unit 2. In other variations of this embodiment, each warp unit 1 may also include one or more warp monofilament fibers 11, and each weft unit 2 may also include one or a different number of weft monofilament fibers 21.

[0031] To facilitate the subsequent explanation of other variations of this embodiment, the weaving structure of the warp unit 1 and the weft unit 2 in this embodiment is further defined as an 8-ply 3-ply / 2-warp-1-weft structure. This means that each warp unit 1 includes two warp monofilament fibers 11, and each weft unit 2 includes one or a bundle of weft monofilament fibers 21.

[0032] See Figures 5 to 7 This is a second embodiment of the high-strength, wear-resistant, and weather-resistant geotextile of the present invention. The weave structure of the second embodiment (not shown in the figure) is the same as that of the first embodiment (see figure). Figure 4 The second embodiment is the same as the first embodiment, also an 8-ply 3-fly structure. The difference between the second embodiment and the first embodiment is that the weft unit 2 is divided into multiple first fiber bundles 2' and multiple second fiber bundles 2" and the first fiber bundles 2' and the second fiber bundles 2" are alternately arranged along the warp direction. Each first fiber bundle 2' has multiple weft monofilament fibers 21, each second fiber bundle 2" has multiple weft monofilament fibers 21, and the number of weft monofilament fibers 21 in each second fiber bundle 2" is twice the number of weft monofilament fibers 21 in each first fiber bundle 2'. The second embodiment is hereby defined as an 8-ply 3-fly / 2 warp (1+2) weft structure.

[0033] Since the second embodiment has the same organizational structure as the first embodiment, the coverage of the second embodiment is also 87.5%. In other variations of this embodiment, the number of weft monofilament fibers 21 in each first fiber bundle 2' and each second fiber bundle 2" can be set to different numbers as needed. Another variation of this embodiment can be an 8-ply 3-ply / 2-warp 2-weft structure, that is, the organizational structure of the variation is the same as... Figure 4 The same applies to each warp unit 1, which includes two warp monofilament fibers 11 (not shown in the figure), and each weft unit 2, which includes two fiber bundles (not shown in the figure), and each fiber bundle has the same number of weft monofilament fibers 21.

[0034] See Figures 8 to 11These are the organizational structures of a single weave cycle in the third to sixth embodiments of the high-strength, wear-resistant, and weather-resistant geotextile fabric of the present invention. The difference between the third to sixth embodiments and the first embodiment lies in the weaving method. The warp unit 1 and the weft unit 2 are woven using an m / n twill weave (see also...). Figure 1 The difference between the warp unit 1 and the weft unit 2 shown is in their weaving structure. A weft unit 2 passes under m warp units 1 and then over n warp units 1, with each weft weft point 32 having an offset of one point in each row to form a diagonal weave. In the twill weave, the coverage is m / (m+n). If the coverage needs to be greater than 70%, the ratio of m to n needs to be greater than 7 / 3. In the third to sixth embodiments, the ratio of m to n is greater than or equal to 3. It should be noted that in the third to sixth embodiments and other variations (i.e., different twill structures), the number of warp monofilament fibers 11 in each warp unit 1 and the number of weft monofilament fibers 21 in each weft unit 2 are not limited.

[0035] See also Figure 8 In the third embodiment, the warp unit 1 and the weft unit 2 are woven using a 7 / 1 twill weave, where m is 7, n is 1, the ratio of m to n is 7, the total number of weave points is 64, the number of warp weave points 31 is 56, and the coverage rate is 56 / 64, which is 87.5%. Each warp unit 1 contains two warp monofilament fibers 11 (not shown), and each weft unit 2 contains two fiber bundles (not shown), each containing multiple weft monofilament fibers 21. This embodiment is defined as a 7 / 1 twill / 2 warp 2 weft structure. A variation of this embodiment can be a 7 / 1 twill / 2 warp (1+2) weft structure. The difference between this variation and the 7 / 1 twill / 2 warp 2 weft structure is the same as the variation logic described in the first and second embodiments, and therefore will not be repeated here.

[0036] See also Figure 9 In the fourth embodiment, the warp unit 1 and the weft unit 2 are woven using a 5 / 1 twill weave, the ratio of m to n is 5, the total number of weave points is 36, the number of warp weave points 31 is 30, and the coverage rate is 30 / 36, which is approximately 83.33%. This embodiment can be a 5 / 1 twill / 1 warp 2 weft structure or a 5 / 1 twill / 1 warp (1+2) weft structure.

[0037] See also Figure 10In the fifth embodiment, the warp unit 1 and the weft unit 2 are woven using a 6 / 2 twill weave, with a m to n ratio of 3, a total of 64 weave points, and 48 warp weave points 31, resulting in a coverage rate of 48 / 64, which is 75%. This embodiment can be a 6 / 2 twill / 2 warp-1 weft structure or a 6 / 2 twill / 2 warp-2 weft structure.

[0038] See also Figure 11 In the sixth embodiment, the warp unit 1 and the weft unit 2 are woven using a 3 / 1 twill weave, with a m to n ratio of 3, a total number of weave points of 16, and a warp weave point 31 of 12, resulting in a coverage rate of 75% (12 / 16). This embodiment is a 3 / 1 twill / 1 warp-1 weft structure.

[0039] As can be seen from the foregoing description, the coverage of the third to sixth embodiments is all greater than 70%. Therefore, the third to sixth embodiments also have the technical feature that the warp monofilament fibers 11 with large diameter (high denier) are concentrated on one side of the ground fabric, so that the total exposed surface area of ​​the weft monofilament fibers 21 is small, avoiding damage from sunlight and external forces, and has better resistance. Thus, it can also improve the wear resistance and weather resistance of the ground fabric.

[0040] In summary, the high-strength, abrasion-resistant, and weather-resistant geotextile of the present invention is achieved by interweaving the warp monofilament fibers 11 with a fineness between 501 and 3000 denier and the weft monofilament fibers 21 with a fineness between 50 and 1000 denier, so that the warp density contains 20 to 600 warp monofilament fibers 11 per inch and the weft density contains 150 to 2000 weft monofilament fibers 21 per inch. This improves abrasion resistance, weather resistance, and sun protection, reduces material wear and aging, and maintains a small average porosity while ensuring strength and good water permeability, thus achieving a good filtration effect. Therefore, the present invention truly achieves its objectives.

[0041] The above description is merely an embodiment of the present invention and should not be construed as limiting the scope of the present invention. Any simple equivalent changes and modifications made in accordance with the claims and description of the present invention shall still fall within the scope of the present invention.

Claims

1. A high-strength, wear-resistant, and weather-resistant geotextile fabric, comprising multiple warp yarn units and multiple weft yarn units interwoven with the warp yarn units; characterized in that: Each of the warp units includes at least one warp monofilament fiber, and each of the weft units includes at least one weft monofilament fiber. The high-strength, abrasion-resistant, and weather-resistant geotextile fabric has a warp density of 20 to 600 warp monofilament fibers per inch, with each warp monofilament fiber having a fineness between 501 and 3000 denier. The weft density has a weft density of 150 to 2000 weft monofilament fibers per inch, with each weft monofilament fiber having a fineness between 50 and 1000 denier. In one weave cycle, the ratio of the number of warp weave points to the total number of weave points is greater than 70%.

2. The high-strength, abrasion-resistant, and weather-resistant geotextile according to claim 1, characterized in that: The warp density contains 40 to 600 warp monofilaments per inch, and the fineness of each of the weft monofilaments is between 50 and 500 deniers.

3. The high-strength, wear-resistant, and weather-resistant geotextile fabric according to claim 1, characterized in that: The warp yarn unit and the weft yarn unit are interwoven to form an m / n twill structure, where the ratio of m to n is greater than or equal to 3.

4. The high-strength, abrasion-resistant, and weather-resistant geotextile according to claim 1, characterized in that: The warp yarn unit and the weft yarn unit are interwoven to form a p-p satin weave structure, where p is greater than or equal to 5.

5. The high-strength, abrasion-resistant, and weather-resistant geotextile according to claim 1, characterized in that: The characteristic aperture is between 0.075 mm and 0.4 mm (measured according to test standard ISO 12956).

6. The high-strength, abrasion-resistant, and weather-resistant geotextile fabric according to claim 1, characterized in that: Abrasion resistance greater than 90% (measured according to test standard ASTM D4886).

7. The high-strength, abrasion-resistant, and weather-resistant geotextile according to claim 1, characterized in that: Permeability greater than 40L / m 2 / s (measured according to test standard ISO 11058).

8. The high-strength, abrasion-resistant, and weather-resistant geotextile according to claim 1, characterized in that: The UV resistance intensity after 500 hours is greater than 98% (measured according to the test standard ASTM D4355), and the UV resistance intensity after 6000 hours is greater than 90% (measured according to the test standard ASTM D4355).

9. The high-strength, wear-resistant, and weather-resistant geotextile according to claim 1, characterized in that: Tensile strength is between 100 kN / m and 400 kN / m (measured according to test standard ISO 10319 or ASTM D4595).

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