Three-dimensional penetration-resistant fabric and preparation process thereof

Abstract

This application relates to the field of textile fabrics, disclosing a three-dimensional anti-permeability fabric and its preparation process. The three-dimensional anti-permeability fabric includes a first woven layer and several second woven layers. The second woven layers are formed by weaving core-spun yarn onto the first woven layer using a weaving process. The edges of the second woven layers are formed by cutting and high-temperature setting of the core-spun yarn to create a three-dimensional plush structure. The core yarn of the core-spun yarn is made by twisting several high-melting-point yarns and at least one glass fiber yarn together, while the covering yarn is a low-melting-point yarn. The three-dimensional anti-permeability fabric obtained by this application, after cutting and high-temperature setting of the core-spun yarn at the edges of the second woven layers, shrinks the core-spun yarn to form a spiral shape, creating a three-dimensional plush structure at the edges of the second woven layer. Under the synergistic support of the core yarn and the shrunk covering yarn, a stable three-dimensional anti-permeability fabric is formed. It is not easily deformed during long-term wear and washing, maintaining good softness, three-dimensionality, and anti-permeability.

Description

Technical Field

[0001] This application relates to the field of textile fabrics, and in particular to a three-dimensional anti-permeability fabric and its preparation process. Background Technology

[0002] Transparency-resistant fabrics are a type of textile that effectively reduces or blocks light from penetrating the fabric, thus preventing see-through effects when clothing is worn. They achieve a more three-dimensional texture and better transparency while maintaining the fabric's lightweight and breathable properties. These fabrics are widely used in lightweight garments such as shirts and dresses.

[0003] In existing technologies, achieving light-blocking effects in lightweight fabrics mainly focuses on two dimensions: fiber material selection and fabric structure optimization. On one hand, increasing the density of warp and weft yarns, i.e., increasing the fabric's tightness, compresses the light-transmitting pores by tightly packing the yarns, thus achieving light blocking. On the other hand, using matting filaments, such as polyester or nylon filaments with added matting agents like titanium dioxide, reduces light transmittance at the fiber level by utilizing the scattering and absorption effects of these agents. Additionally, some existing technologies create localized pile on the fabric surface through simple shearing processes, thereby forming a light-scattering surface to achieve a light-blocking effect. These existing technologies do indeed improve the light-blocking performance of fabrics to a certain extent and have the advantages of relatively mature processes and ease of industrial production.

[0004] However, while increasing warp and weft density can reduce light transmission through physical barriers, it also increases the crimp height between yarns and the interlacing resistance, making the fabric feel stiff and rigid. This results in a loss of the suppleness and drape expected of thin fabrics, severely impacting wearing comfort and the flowing texture of clothing. While using dull filaments can improve the light transmission of the fiber itself, high-density weaving exacerbates the fabric stiffness problem, and reducing density makes it difficult to achieve the required light-blocking effect. Furthermore, the raw edges produced by existing shearing techniques serve only as a visual decorative element. The resulting fuzz is easily flattened and adheres tightly to the fabric surface due to friction and washing during subsequent processing or wear, failing to maintain a stable, fluffy, three-dimensional structure on the fabric surface for a long time. Therefore, it cannot form a continuous and effective light-scattering interface, limiting its effectiveness in improving light-blocking performance. Summary of the Invention

[0005] To address the issues of low permeability, stiff overall texture, and difficulty in maintaining the fluffiness and stability of three-dimensional structures in permeable fabrics during long-term washing and wear, this application provides a three-dimensional permeable fabric and its preparation process.

[0006] In a first aspect, this application provides a three-dimensional anti-seepage fabric, which adopts the following technical solution: A three-dimensional anti-permeability fabric includes a first woven layer and several second woven layers. The second woven layers are made by weaving core-spun yarn into the first woven layer through a weaving process. The edges of the second woven layers are formed by cutting the core-spun yarn and high-temperature setting to form a three-dimensional plush structure. The core yarn of the core-spun yarn is made by twisting several high-melting-point yarns and at least one glass fiber yarn together. The covering yarn of the core-spun yarn is a low-melting-point yarn.

[0007] By adopting the above technical solution, the first woven layer, as the base woven layer, possesses lightweight, breathable, and soft properties. The second woven layer is woven onto the surface of the first woven layer. After the edges of the core-spun yarn in the second woven layer are cut and high-temperature set, the covering yarn in the core-spun yarn shrinks and forms a spiral shape when heated, due to the low melting point yarn. This results in a stable three-dimensional woven structure for the second woven layer, while simultaneously creating a three-dimensional plush structure at the edges. The core yarn of the core-spun yarn is composed of high melting point yarn and glass fiber yarn. The high melting point yarn ensures the stability and strength of the core yarn, while the glass fiber yarn has a certain degree of rigidity and toughness, working synergistically to further maintain the stable three-dimensional structure and three-dimensional plush structure of the fabric, thus further enhancing the fabric's three-dimensional anti-permeability performance. This three-dimensional structure is not easily deformed during long-term wear and washing. At the same time, the three-dimensional plush structure effectively increases light scattering and reflection, improving the fabric's anti-permeability. Under the synergistic effect of the first and second woven layers, the three-dimensional anti-permeability fabric maintains good softness and drape, while also preserving a good three-dimensional shape.

[0008] Preferably, the high-melting-point yarn has a melting point of 250-260℃, and the low-melting-point yarn has a melting point of 180-200℃.

[0009] By adopting the above technical solution, the surface of the low melting point yarn shrinks uniformly during high-temperature setting of the core-spun yarn, while the high melting point yarn remains stable. This helps the core-spun yarn form a uniform spiral shape, thereby enabling the second braided layer to form a three-dimensional braided structure. At the same time, the edge of the second braided layer forms a stable three-dimensional plush structure.

[0010] Preferably, the diameter of the glass fiber yarn is 5-8µm.

[0011] By adopting the above technical solution, the core-spun yarn can possess excellent flexibility and strength. When used in three-dimensional anti-seepage fabrics, it ensures that the three-dimensional plush structure formed by the edge cutting of the second weave layer has sufficient support and is not prone to collapsing, thus maintaining a fluffy and stable three-dimensional structure over a long period to form a continuously effective light scattering interface and improve the anti-seepage effect; at the same time, it will not affect the overall feel and comfort of the fabric due to excessive stiffness. If the diameter of the fiberglass yarn is too small, its strength is insufficient to support the three-dimensional plush structure, and it is prone to collapsing during long-term washing and wearing, failing to maintain a stable three-dimensional structure and reducing the anti-seepage performance; if the diameter is too large, it will cause the core-spun yarn to be too stiff, making the fabric feel stiff and affecting the wearing experience and the flowing texture of the garment.

[0012] Preferably, the low-melting-point yarn is made from the following raw materials in parts by weight: 100-120 parts of polyethylene terephthalate First toughening agent 12-18 parts Second toughening agent 10.5-14 parts 5-9 parts compatibilizer Lubricant 0.1-0.3 parts Antioxidant 0.2-0.5 parts.

[0013] By adopting the above technical solution, polyethylene terephthalate (PET) serves as the basic raw material for low-melting-point yarn, providing the yarn with fundamental physical properties. The first toughening agent enhances the yarn's toughness and elasticity, improving its tensile and tear resistance. The second toughening agent synergistically enhances the yarn's flexibility and impact resistance. The compatibilizer improves the compatibility and dispersibility between PET, the first toughening agent, and the second toughening agent, increasing the uniformity and stability of the resulting low-melting-point yarn. The lubricant reduces the coefficient of friction during processing, improving production efficiency and yarn surface smoothness. The antioxidant prevents oxidation during use, extending the yarn's service life.

[0014] Preferably, the first toughening agent is composed of PU-hydrogenated styrene block copolymer and octaglycidyl dimethylsilylated cage silsesquioxane in a weight ratio of 1:(2-4).

[0015] By adopting the above technical solution, the PU-hydrogenated styrene block copolymer exhibits good flexibility and elasticity, which can improve the toughness and impact resistance of low-melting-point yarns. Octaglycidyl dimethylsilylated cage-like silsesquioxane possesses a unique cage-like structure, which can enhance intermolecular interactions and improve the strength and thermal stability of low-melting-point yarns. The combination of these two technologies allows low-melting-point yarns to maintain flexibility while improving strength and stability.

[0016] Preferably, the second toughening agent is composed of polyhydroxy fatty acid ester and polypropylene adipate in a weight ratio of 1:(1-2).

[0017] By adopting the above technical solution, polyhydroxyalkanoates possess good biocompatibility and biodegradability, and can impart a certain degree of flexibility to low-melting-point yarns; polypropylene adipate possesses good elasticity and toughness. The two work synergistically to enhance the toughness of the low-melting-point yarns, and together with the first toughening agent, improve the melting point of the low-melting-point yarns while simultaneously increasing the toughness of the core-spun yarns, further enhancing the stability of the three-dimensional plush structure.

[0018] Preferably, the compatibilizer is POE grafted with glycidyl methacrylate and / or maleic anhydride grafted with styrene.

[0019] By adopting the above technical solution, the compatibility between raw materials in low-melting-point yarn can be improved, allowing raw materials such as polyethylene terephthalate, the first toughening agent, and the second toughening agent to be better combined, reducing phase separation, improving the uniformity and stability of low-melting-point yarn, and thus enhancing the overall performance of three-dimensional anti-permeability fabric.

[0020] Preferably, the lubricant is one or a combination of ethylene bis-stearamide, polyethylene wax, silicone powder, calcium stearate, and zinc stearate; the antioxidant is antioxidant 1010 and / or antioxidant 168.

[0021] By adopting the above technical solutions, lubricants can reduce the frictional resistance of low-melting-point yarns during processing and improve processing performance; antioxidants can prevent low-melting-point yarns from oxidizing in high-temperature environments and extend their service life.

[0022] Secondly, this application provides a manufacturing process for a three-dimensional anti-seepage fabric, employing the following technical solution: A manufacturing process for a three-dimensional anti-seepage fabric includes the following steps: Core-spun yarn preparation: Several high-melting-point yarns and at least one glass fiber yarn are twisted together to obtain core yarn, and then a covering yarn is wound around the core yarn to obtain core-spun yarn. Preparation of the first braided layer: The first braided layer is obtained by knitting or weaving using braided yarn; Preparation of three-dimensional anti-permeability fabric: Several second woven layers are formed by weaving core-spun yarn on the surface of the first woven layer. Then, the core-spun yarn in the edge area of ​​the second woven layer is cut and then high temperature setting is performed to obtain the three-dimensional anti-permeability fabric.

[0023] By adopting the above technical solution, in the core-spun yarn preparation step, several high-melting-point yarns and at least one glass fiber yarn are twisted together to form a core yarn, which is then wound with a covering yarn to form a core-spun yarn. The high-melting-point yarns ensure that the core yarn does not deform during high-temperature setting, while the glass fiber yarns increase the strength and stiffness of the core-spun yarn, laying the foundation for the subsequent formation of a stable three-dimensional structure. In the first braided layer preparation step, braided yarns are used to knit or weave to obtain the first braided layer, providing the basic structure for the three-dimensional anti-permeability fabric. In the three-dimensional anti-permeability fabric preparation step, the core-spun yarn is woven on the surface of the first braided layer to form a second braided layer. After the core-spun yarn at the edge of the second braided layer is cut, it is set at high temperature. The high temperature melts the low-melting-point covering yarn, causing the core-spun yarn to form a crimped spiral structure, thereby making the second braided layer as a whole a three-dimensional structure. At the same time, the edge of the second braided layer forms a stable three-dimensional plush structure, enhancing the anti-permeability effect of the fabric.

[0024] The advantage of this manufacturing process is that, through reasonable step design, it can produce a three-dimensional fabric with good anti-permeability properties and a stable three-dimensional structure. It can maintain its fluffiness and stability during long-term washing and wearing, while avoiding the problem of the overall stiffness of the fabric in the existing technology. It maintains the fabric's flexibility and drape, and improves wearing comfort and the flowing texture of the garment.

[0025] Preferably, the second knitting layer is knitted in a figure-eight pattern, with floats set in the second knitting layer. The number of stitches crossed by the floats is 4-6, and the floats are knitted in a loop with 1-2 stitches in between. When cutting, the end of the float that is furthest from the second knitting layer is cut.

[0026] By adopting the above technical solution, the figure-eight weaving direction makes the second weaving layer more tightly bonded to the first weaving layer. Setting specific cross-stitch counts and intervals for the looped weaving floats can form a more stable three-dimensional structure. Cutting the ends of the floats is conducive to forming a three-dimensional plush structure, thereby improving the three-dimensional texture and anti-seepage effect of the fabric, and is also conducive to maintaining the fluffiness and stability of the three-dimensional structure during long-term washing and wearing. The specific cutting position allows the three-dimensional plush structure after high-temperature setting to naturally form three-dimensional tufts of hair perpendicular to the fabric. Light is refracted and attenuated multiple times before passing through the three-dimensional anti-seepage fabric, achieving physical anti-seepage.

[0027] In summary, this application includes at least one of the following beneficial technical effects: 1. The three-dimensional anti-permeability fabric of this application consists of a first woven layer and several second woven layers. The second woven layers are woven from core-spun yarn into the first woven layer, and their edges are cut from core-spun yarn to form a three-dimensional plush structure. This three-dimensional structure is not easily deformed during long-term wear and washing. At the same time, the three-dimensional plush structure can effectively increase the scattering and reflection of light, and improve the anti-permeability of the fabric. Under the synergistic effect of the first woven layer and the second woven layer, the three-dimensional anti-permeability fabric can maintain good softness and drape, and also maintain a good three-dimensional shape.

[0028] 2. The low-melting-point yarn is made from polyethylene terephthalate, a first toughening agent, a second toughening agent, a compatibilizer, a lubricant, an antioxidant, and other raw materials. The first toughening agent is composed of PU-hydrogenated styrene block copolymer and octaglycidyl dimethylsilylated cage-like silsesquioxane. The second toughening agent is composed of polyhydroxy fatty acid ester and polypropylene adipate. It can be combined with high-melting-point yarn and glass fiber yarn during high-temperature setting to make the three-dimensional plush structure more stable.

[0029] 3. The manufacturing process includes core-spun yarn preparation, first braided layer preparation, and three-dimensional anti-permeability fabric preparation. The second braided layer and the first braided layer are woven in a specific figure-eight pattern. The floats are set reasonably and the cutting method is scientific. This can efficiently produce three-dimensional anti-permeability fabric without increasing the warp and weft density, ensuring the fabric's flexibility and drape, and improving wearing comfort and three-dimensional anti-permeability. Attached Figure Description

[0030] Figure 1 This is a physical image of a three-dimensional anti-seepage fabric according to this application. Detailed Implementation

[0031] The following describes the preparation examples, embodiments, and appendices. Figure 1 This application will be described in further detail.

[0032] The following are some of the sources and specifications of the raw materials used in this application. The raw materials used in the preparation examples and embodiments of this application can all be obtained commercially, including but not limited to the following models and manufacturers of raw materials. Raw materials with equivalent performance can also be used: 1. Polyethylene terephthalate: DuPont RE5329; 2. PU-hydrogenated styrene block copolymer: Kuraray TU-S5265; 3. Polyhydroxy fatty acid ester: WP-P003, Shanghai Wanna Juhe Polymer, melt index (165 °C / 2.16 kg): 2 g / 10 min; 4. Polypropylene adipate: molecular weight 2000-3000; 5. POE grafted with glycidyl methacrylate: Plastic POG-2821; 6. Maleic anhydride-grafted styrene: Shenghao Plastics, maleic anhydride grafting rate 15%; 7. High melting point yarn: 12F / 20D polyester yarn, Hengtai Textile, melting point 250-260℃; 8. Fiberglass yarn: 5-8µm in diameter, Jushi untwisted fiberglass yarn; 9. Braiding yarn: 22F / 40D polyester yarn; Example of low melting point yarn preparation Preparation Example 1 Preparation Example 1 discloses a low-melting-point yarn, which is prepared by the following steps: 100g of polyethylene terephthalate, 12g of the first toughening agent, 14g of the second toughening agent, 5g of compatibilizer, 0.1g of lubricant and 0.2g of antioxidant were melt-spun at the following temperatures: 245℃ for the first stage, 255℃ for the second stage, 265℃ for the third stage, 255℃ for the fourth stage, and 255℃ for the die head. The spinning temperature was 275℃, resulting in a low-melting-point yarn with a specification of 20D. The first toughening agent is a PU-hydrogenated styrene block copolymer; the second toughening agent is composed of polypropylene adipate; the compatibilizer is composed of POE grafted with glycidyl methacrylate and maleic anhydride grafted with styrene in a weight ratio of 2:1; the lubricant is calcium stearate; and the antioxidant is composed of antioxidant 1010 and antioxidant 168 in a weight ratio of 1:1.

[0033] Preparation Example 2 The difference between Preparation Example 2 and Preparation Example 1 lies in the amount of raw materials used and the preparation conditions, as detailed below: 110g of polyethylene terephthalate, 15g of first toughening agent, 12.5g of second toughening agent, 7g of compatibilizer, 0.2g of lubricant and 0.35g of antioxidant were melt-spun at the following temperatures: 250℃ for the first stage, 260℃ for the second stage, 265℃ for the third stage, 260℃ for the fourth stage, and 260℃ for the die head. The spinning temperature was 270℃, resulting in a low-melting-point yarn with a specification of 20D. The first toughening agent is Dow Chemical's Elvaloy™ PTW ethylene terpolymer; the second toughening agent is composed of polypropylene adipate; the compatibilizer is POE-grafted glycidyl methacrylate; the lubricant is zinc stearate; and the antioxidant consists of antioxidant 1010 and antioxidant 168 in a weight ratio of 1:2.

[0034] Preparation Example 3 The difference between Preparation Example 3 and Preparation Example 1 lies in the amount of raw materials used and the preparation conditions, as detailed below: 120g of polyethylene terephthalate, 18g of the first toughening agent, 10.5g of the second toughening agent, 9g of compatibilizer, 0.3g of lubricant and 0.5g of antioxidant were melt-spun at the following temperatures: 250℃ for the first stage, 255℃ for the second stage, 265℃ for the third stage, 260℃ for the fourth stage, and 260℃ for the die head. The spinning temperature was 275℃, resulting in a low-melting-point yarn with a specification of 20D. The first toughening agent is PU-hydrogenated styrene block copolymer; the second toughening agent is composed of polypropylene adipate; the compatibilizer is composed of maleic anhydride-grafted styrene; the lubricant is ethylene bis-stearamide; and the antioxidant is composed of antioxidant 1010 and antioxidant 168 in a weight ratio of 1:3.

[0035] Preparation Example 4 The difference between Preparation Example 4 and Preparation Example 1 is that the first toughening agent is composed of PU-hydrogenated styrene block copolymer and octaglycidyl dimethylsilylated cage silsesquioxane in a weight ratio of 1:2, while the rest is the same as Preparation Example 1.

[0036] Preparation Example 5 The difference between Preparation Example 5 and Preparation Example 1 is that the first toughening agent is composed of PU-hydrogenated styrene block copolymer and octaglycidyl dimethylsilylated cage silsesquioxane in a weight ratio of 1:4, while the rest is the same as Preparation Example 1.

[0037] Preparation Example 6 The difference between Preparation Example 6 and Preparation Example 5 is that the second toughening agent is composed of polyhydroxy fatty acid ester and polypropylene adipate in a weight ratio of 1:1, while the rest is the same as Preparation Example 5.

[0038] Preparation Example 7 The difference between Preparation Example 7 and Preparation Example 5 is that the second toughening agent is composed of polyhydroxy fatty acid ester and polypropylene adipate in a weight ratio of 1:2, while the rest is the same as Preparation Example 5.

[0039] Preparation Example 8 The difference between Preparation Example 8 and Preparation Example 7 is that the first toughening agent is replaced with an equal amount of the second toughening agent, while the rest is the same as Preparation Example 7.

[0040] Example Example 1

[0041] Example 1 discloses a three-dimensional anti-permeability fabric, which consists of a first woven layer and several second woven layers. The second woven layers are made by weaving core-spun yarn into the first woven layer through a weaving process. The edges of the second woven layers are formed by cutting and high-temperature setting of the core-spun yarn to create a three-dimensional plush structure. The core yarn of the core-spun yarn is made by twisting several high-melting-point yarns and at least one glass fiber yarn. The covering yarn of the core-spun yarn is a low-melting-point yarn. The melting point of the high-melting-point yarn is 250-260℃, the melting point of the low-melting-point yarn is 180-200℃, and the diameter of the glass fiber yarn is 5µm.

[0042] The manufacturing process of this three-dimensional anti-seepage fabric includes the following steps: Preparation of core-spun yarn: Several high-melting-point yarns and a glass fiber yarn with a diameter of 5µm are twisted together with a twist of 500T / m to obtain a core yarn. Then, a low-melting-point yarn obtained in Preparation Example 1 is used as a covering yarn and wound around the core yarn in the S-twist direction, and the winding twist is controlled to be 1200T / m to obtain core-spun yarn. Preparation of the first braided layer: Weaving is carried out using braided yarn, with the warp density controlled at 135 threads / inch and the weft density at 145 threads / inch to obtain the first braided layer; Preparation of 3D anti-permeability fabric: Several second knitting layers are formed on the surface of the first knitting layer using core-spun yarn. The knitting process is figure-eight weft knitting. Floats are set in the second knitting layer. The number of stitches crossed by the floats is 4. The floats are knitted in a loop with 2 stitches in between. The knitting length of the core-spun yarn is 30cm / 100 stitches. Several third braided layers are formed by weaving yarn on the surface of the first braided layer at intervals from the second braided layer. The weaving process and parameters of the third braided layers are the same as those of the second braided layers. The core-spun yarn at the edge of the second braided layer is then cut, with the cut made at the end of the float yarn furthest from the second braided layer. The fabric is then subjected to high-temperature setting at 200℃ for 60 seconds to obtain a three-dimensional impermeable fabric. (See attached document.) Figure 1 .

[0043] Example 2

[0044] The difference between Example 2 and Example 1 is that the diameter of the glass fiber yarn is 6.5µm, the covering yarn is the low melting point yarn obtained in Preparation Example 2, the number of needles crossed by the float is 5, the float is woven in a loop with a 1-needle interval in the middle, the high temperature setting temperature is 205℃ and the time is 45s, and the rest is the same as in Example 1.

[0045] Example 3

[0046] The difference between Example 3 and Example 1 is that the diameter of the glass fiber yarn is 8µm, the covering yarn is the low melting point yarn obtained in Preparation Example 3, the number of needles crossed by the float is 6, the float is woven in a loop with 2 needles in between, the high temperature setting temperature is 210℃ and the time is 30s, and the rest is the same as in Example 1.

[0047] Example 4

[0048] The difference between Example 4 and Example 1 is that the low-melting-point yarn is derived from Example 4, while the rest is the same as Example 1.

[0049] Example 5

[0050] The difference between Example 5 and Example 1 is that the low-melting-point yarn is derived from Example 5, while the rest is the same as Example 1.

[0051] Example 6

[0052] The difference between Example 6 and Example 5 is that the low-melting-point yarn is derived from Example 6, while the rest is the same as Example 5.

[0053] Example 7

[0054] The difference between Example 7 and Example 5 is that the low-melting-point yarn is derived from Example 7, while the rest is the same as Example 5.

[0055] Example 8

[0056] The difference between Example 8 and Example 7 is that the low-melting-point yarn is derived from Example 8, while the rest is the same as Example 7.

[0057] Example 9

[0058] The difference between Example 9 and Example 1 is that the low melting point yarn is a commercially available low melting point yarn, 20D polyester yarn, Hengtai Textile, with a melting point of 180-200℃, and the rest is the same as Example 1.

[0059] Comparative Example Comparative Example 1 The difference between Comparative Example 1 and Example 1 is that the glass fiber yarn is replaced with high melting point yarn, otherwise it is the same as Example 1.

[0060] Performance testing The following tests were conducted on the performance of the three-dimensional anti-seepage fabrics prepared in Examples 1-9 and Comparative Example 1: 1. Water washing test Take a 1*1m three-dimensional anti-permeability fabric, select the quick wash mode (15min) in a fully automatic drum washing machine, and perform one cycle of washing-rinsing-spinning under the condition of 25℃ water temperature and 50 washes with 1wt% laundry detergent. Then, randomly select 5 second weave layers for observation and calculate the deformation rate (unit: %) of the three-dimensional pile structure of the three-dimensional anti-permeability fabric. Deformation rate = number of deformed three-dimensional pile structures / total number of three-dimensional pile structures * 100%.

[0061] 2. Tear strength test According to the test method in GB / T 3917.2, test the tear strength (unit: N) of the three-dimensional anti-permeability fabric and record the test results; 3. Softness test According to the test method in GB / T 18318.1-2009, test the bending stiffness (unit: mN·cm) of the three-dimensional anti-permeability fabric corresponding to the second woven layer area, and record the test results; The following are the performance test data of the three-dimensional anti-permeability fabrics prepared in Examples 1-9 and Comparative Example 1, as detailed in Table 1 below.

[0062] Table 1 Performance data of the three-dimensional anti-permeability fabrics prepared in Examples 1-9 and Comparative Example 1

[0063] Based on Examples 1-3 and Examples 4-9, and in conjunction with Table 1, it can be concluded that the core-spun yarn prepared using the low-melting-point yarn obtained from the specific components of this application produces a three-dimensional anti-permeability fabric with good strength and softness. Furthermore, the three-dimensional plush structure retains its three-dimensional shape well after washing and is not easily deformed. Examples 4-5, compared to Example 1, further optimized the first toughening agent in the low-melting-point yarn, resulting in a reduced deformation rate, increased tear strength, and reduced bending strength in the obtained three-dimensional anti-permeability fabric. Examples 6-7, compared to Example 5, further optimized the second toughening agent, resulting in a reduced deformation rate, increased tear strength, and reduced bending strength in the obtained three-dimensional anti-permeability fabric. Example 8, compared to Example 7, only added the second toughening agent, resulting in an increased deformation rate, reduced tear strength, and increased bending strength in the obtained three-dimensional anti-permeability fabric. However, Example 9, compared to Example 1, uses commercially available low-melting-point yarn, resulting in a significantly reduced performance of the obtained three-dimensional anti-permeability fabric. This further illustrates that the low-melting-point yarns of specific components in this application have a significant performance-enhancing effect on the preparation of three-dimensional anti-permeability fabrics.

[0064] Based on Example 1 and Comparative Example 1, and referring to Table 1, it can be concluded that by using the glass fiber of this application as a supporting skeleton, the strength and stability of the three-dimensional anti-seepage fabric can be further improved. In Comparative Example 1, replacing the glass fiber yarn with high-melting-point yarn resulted in a decrease in the bending strength of the three-dimensional anti-seepage fabric, but a significant decrease in the deformation rate and tear strength.

[0065] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A three-dimensional, see-through fabric, characterized in that, It includes a first braided layer and several second braided layers. The second braided layers are made by weaving core-spun yarn onto the first braided layer through a braiding process. The edges of the second braided layers are formed into a three-dimensional plush structure by cutting and high-temperature setting of the core-spun yarn. The core yarn of the core-spun yarn is made by twisting several high-melting-point yarns and at least one glass fiber yarn together. The covering yarn of the core-spun yarn is a low-melting-point yarn.

2. The three-dimensional anti-seepage fabric according to claim 1, characterized in that, The high-melting-point yarn has a melting point of 250-260℃, and the low-melting-point yarn has a melting point of 180-200℃.

3. The three-dimensional see-through fabric of claim 1, wherein, The diameter of the glass fiber yarn is 5-8µm.

4. A three-dimensional anti-seepage fabric according to any one of claims 1-3, characterized in that, The low-melting-point yarn is made from the following raw materials in parts by weight: 100-120 parts of polyethylene terephthalate First toughening agent 12-18 parts Second toughening agent 10.5-14 parts 5-9 parts compatibilizer Lubricant 0.1-0.3 parts Antioxidant 0.2-0.5 parts.

5. The three-dimensional anti-seepage fabric according to claim 4, characterized in that, The first toughening agent is composed of PU-hydrogenated styrene block copolymer and octaglycidyl dimethylsilylated cage silsesquioxane in a weight ratio of 1:(2-4).

6. A three-dimensional see-through fabric according to claim 4, wherein The second toughening agent is composed of polyhydroxy fatty acid ester and polypropylene adipate in a weight ratio of 1:(1-2).

7. A three-dimensional see-through fabric according to claim 4, wherein The compatibilizer is POE grafted with glycidyl methacrylate and / or maleic anhydride grafted with styrene.

8. The three-dimensional anti-seepage fabric according to claim 1, characterized in that, The lubricant is one or a combination of ethylene bis-stearamide, polyethylene wax, silicone powder, calcium stearate, and zinc stearate; the antioxidant is antioxidant 1010 and / or antioxidant 168.

9. A manufacturing process for a three-dimensional anti-permeability fabric as described in any one of claims 1-8, characterized in that, Includes the following steps: Core-spun yarn preparation: Several high-melting-point yarns and at least one glass fiber yarn are twisted together to obtain core yarn, and then a covering yarn is wound around the core yarn to obtain core-spun yarn. Preparation of the first braided layer: The first braided layer is obtained by knitting or weaving using braided yarn; Preparation of three-dimensional anti-permeability fabric: Several second woven layers are formed by weaving core-spun yarn on the surface of the first woven layer. Then, the core-spun yarn in the edge area of ​​the second woven layer is cut and then high temperature setting is performed to obtain the three-dimensional anti-permeability fabric.

10. The process for making a volumetrically transparent fabric according to claim 9, wherein, The second knitting layer is knitted in a figure-eight pattern. The second knitting layer has floats that cross 4-6 stitches, and the floats are knitted in a loop with 1-2 stitches in between. When cutting, cut the end of the float that is furthest from the second knitting layer.

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