Process for manufacturing ultrahigh monolayer wire

Abstract

This invention discloses a manufacturing process for ultra-high single-layer drawn fiber, which includes: weaving an ultra-high single-layer drawn fiber base fabric using a double-needle bed warp knitting machine, wherein the distance between the double needle beds H is 20~50cm, the drawn fiber linear density is 1000D~2000D, and the mesh density is 12~20 squares / cm. 2 The process involves heat setting to orient the molecular chains of the drawn fibers; high-frequency heat sealing to laminate upper and lower TPU film layers onto the upper and lower surfaces of the drawn fabric to form a top layer and a bottom layer; a surrounding band is installed and sealed to the top and bottom layers to form a sealed air chamber; and an air nozzle is installed for inflation testing. This invention achieves an ultra-high single-layer drawn fiber thickness of 20-50cm, breaking through the thickness limitations of existing technologies, simplifying the structure, and maintaining the stable vertical orientation of the drawn fibers at ultra-high thickness. The mattress surface has high flatness, uniform support, and good air tightness. Furthermore, the use of TPU material and high-frequency heat sealing technology makes it environmentally friendly and pollution-free, suitable for the large-scale production of high-thickness air mattresses and special mattresses.

Description

Technical Field

[0001] This invention relates to the field of brushed mattress technology, specifically to a manufacturing process for ultra-high single-layer brushed mattresses. Background Technology

[0002] A brushed fabric mattress (also known as a brushed air mattress) is an inflatable product that uses brushed fabric as its core support structure. Its upper and lower layers are connected by brushed fibers, forming an air chamber structure with uniform support after inflation. It is widely used in outdoor camping, home sleep, medical care, and water sports. Compared to traditional spring and foam mattresses, brushed fabric mattresses have significant advantages such as being lightweight, foldable for storage, and providing even support.

[0003] Existing brushed mattresses typically employ a multi-layered composite structure consisting of a top layer, mesh fabric, brushed fabric, and a bottom layer. While the overall thickness increases with the number of layers, the thickness of a single brushed layer (i.e., the height of the brushed fibers) is strictly limited by the brushed fiber weaving process. In current technology, the height of the brushed fabric is usually only 7-15cm, which is insufficient for applications requiring ultra-high thicknesses (e.g., over 20cm). Multi-layered composite structures require bonding or welding between multiple layers, increasing the processing steps and introducing quality risks such as layer separation and insufficient airtightness. For example, traditional processes require welding the top and bottom layers to reinforcing strips, then welding the top and bottom layers to both sides of the brushed body, and finally clamping the outer band between the top and reinforcing strips for welding – a complex and inefficient process. When the brushed thickness increases significantly, the brushed fibers are prone to bending, tilting, or even breaking under inflation, resulting in an uneven mattress surface and uneven support distribution. While existing technologies improve flatness by setting tension connecting plates on the side sheets, this method has limited effect on improving the stability of drawn fibers with ultra-high thickness. Summary of the Invention

[0004] The purpose of this invention is to provide a manufacturing process for ultra-high single-layer wire drawing, which aims to solve the problems of limited thickness, complex structure, and unstable support under ultra-high thickness in existing wire drawing mattresses.

[0005] This invention achieves the above objective through the following technical solution: a manufacturing process for ultra-high single-layer wire drawing, comprising the following steps: Step S1: Weaving of ultra-high single-layer drawn base fabric The fabric is woven using a double-needle-bed warp knitting machine, with high-strength polyester filament as the drawing fiber material. The distance H between the double needle beds is set to 20-50 cm. A single-layer drawing structure is formed between the upper and lower needle beds through warp knitting. This drawing structure consists of multiple interconnected X-shaped drawing units, with adjacent drawing units arranged in rows and interlaced. The upper end of each drawing unit is connected to the upper mesh fabric woven on the upper needle bed, and the lower end is connected to the lower mesh fabric woven on the lower needle bed. The linear density of the drawing fiber is 1000D-2000D. The warp and weft threads of the upper and lower mesh fabrics interweave to form a mesh with a mesh density of 12-20 squares / cm. 2 ; Step S2: Heat setting treatment The ultra-high single-layer drawing base fabric woven in step S1 is sent to a heat setting oven for heat setting treatment. The setting temperature is 180~220℃ and the setting time is 3~8 minutes. This causes the molecular chains of the drawing fibers to align in an oriented manner, eliminates internal stress, and maintains the vertical orientation of the drawing fibers. Then, cooling setting is performed at a temperature of 20~30℃ and a cooling time of 2~5 minutes. Step S3: Laminating the top layer and the bottom layer A high-frequency heat sealing process is used to laminate an upper TPU film layer onto the upper surface of the upper mesh fabric of the ultra-high single-layer brushed base fabric after step S2, forming a surface layer; a lower TPU film layer is laminated onto the lower surface of the lower mesh fabric, forming a bottom layer; the high-frequency heat sealing frequency is 27.12~40.68MHz, the heat sealing temperature is 150~200℃, the heat sealing pressure is 0.3~0.6MPa, and the heat sealing time is 5~15 seconds; Step S4: Circumferential edge sealing The composite obtained in step S3 is cut according to the predetermined mattress size. A band is set at the circumferential edge of the cut composite. The band is a TPU composite fabric strip. The upper end of the band is connected to the edge of the surface layer by high-frequency heat sealing, and the lower end of the band is connected to the edge of the bottom layer by high-frequency heat sealing to form a sealed air chamber. The width of the band is not less than the double needle bed spacing H set in step S1. Step S5: Install the air valve Air nozzle mounting holes are made at predetermined positions on the surface layer or the surrounding strip. The air nozzles are installed in the mounting holes and sealed and fixed to the surface layer or the surrounding strip by high-frequency heat sealing to form an inflation / deflation channel. Step S6: Finished Product Inspection The finished product obtained in step S5 is subjected to an inflation test. After the inflation pressure reaches 0.03~0.08MPa, it is maintained for 24 hours. The air pressure drop rate is tested. It is required that the air pressure drop rate in 24 hours does not exceed 5%. At the same time, the flatness of the mattress surface and the airtightness of the circumferential edge sealing are checked.

[0006] Furthermore, in step S1, the distance H between the two needle beds is preferably 25~45cm, more preferably 30~40cm.

[0007] Further, in step S1, the linear density of the drawn fiber is preferably 1200D~1800D, and the mesh density of the upper and lower mesh fabrics is preferably 14~18 meshes / cm. 2 .

[0008] Furthermore, in step S1, the material of the drawing fiber is high-strength polyester filament, with a breaking strength of not less than 6.0 cN / dtex and a breaking elongation of 15~25%.

[0009] Furthermore, in step S2, the heat setting process adopts a segmented heating method: the first stage heating temperature is 180~190℃, and the temperature is held for 2~3 minutes; the second stage heating temperature is 200~220℃, and the temperature is held for 1~2 minutes; the third stage is a natural cooling stage, where the temperature gradually drops from 200℃ to room temperature, and the cooling time is 3~5 minutes.

[0010] Furthermore, in step S3, hot melt adhesive films are respectively set between the upper TPU film layer and the upper mesh fabric, and between the lower TPU film layer and the lower mesh fabric. The thickness of the hot melt adhesive film is 0.05~0.15mm, and the material is TPU hot melt adhesive or EVA hot melt adhesive.

[0011] Furthermore, in step S3, the composite area is preheated before high-frequency heat sealing. The preheating temperature is 80~100℃ and the preheating time is 2~5 seconds to improve the uniformity of heat sealing.

[0012] Furthermore, in step S4, the overlap width between the upper and lower ends of the shroud and the surface and bottom layers during heat sealing is 3-8 cm, forming a sealing welded strip with a width of 2-5 cm after heat sealing.

[0013] Furthermore, in step S4, the heat sealing of the shroud with the surface layer and the bottom layer adopts a double-pass welding method, that is, two parallel sealing welds are formed on the inner and outer sides respectively, and the distance between the two welds is 1~3cm.

[0014] Furthermore, in step S6, the inflation test also includes a mattress surface flatness test: a level is placed on the surface of the inflated mattress to measure the height difference at various points on the mattress surface, requiring that any 1m... 2 The maximum height difference within the area shall not exceed 5mm.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention employs a double-needle bed warp knitting process, setting the double-needle bed spacing to 20-50cm, enabling an ultra-high thickness of 20-50cm in a single-layer drawn fabric structure. This overcomes the limitation of existing technologies where the drawn fabric height is only 7-15cm, meeting the application requirements of high-thickness inflatable mattresses and special mattresses. By directly laminating the surface and bottom layers with a single-layer drawn base fabric, the redundant mesh fabric and reinforcing layers of traditional multi-layer composite structures are eliminated, simplifying the product structure and process flow, reducing material usage and manufacturing costs, and simultaneously lowering the quality risk of interlayer separation.

[0016] 2. This invention uses heat setting to orient the molecular chains of the drawn fibers, eliminating internal stress and maintaining the vertical orientation of the drawn fibers at ultra-high thicknesses; simultaneously, it employs a high-density mesh fabric (12~20 meshes / cm). 2 The use of high-density drawn fibers (1000D~2000D) ensures that the fibers will not bend or tilt when inflated, resulting in a high degree of flatness on the mattress surface and even distribution of support. This invention, through a double-welded sealing design of the surrounding band and the top and bottom layers, as well as precise control of high-frequency heat sealing parameters, ensures excellent airtightness of the sealed air chamber, with a 24-hour air pressure drop rate not exceeding 5%. Attached Figure Description

[0017] Figure 1 This is a flowchart illustrating the manufacturing process of the ultra-high single-layer wire drawing of the present invention; Figure 2 This is a schematic diagram of the structure of the ultra-high single-layer filament base fabric woven in step S1 of the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of the composite surface layer and the bottom layer in step S3 of the present invention; Figure 4 This is a partially enlarged schematic diagram of the circumferential edge sealing forming in step S4 of the present invention; Figure 5 This is a distribution diagram of the surface flatness test points of the finished mattress obtained in Example 1 of the present invention after inflation.

[0018] In the diagram: 1-Upper mesh fabric; 2-Lower mesh fabric; 3-Filament fiber; 4-Upper TPU film layer; 5-Lower TPU film layer; 6-Wrapping belt; 7-Inner weld; 8-Outer weld; 9-Sealed air chamber; 10-Air nozzle. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Example 1

[0021] This embodiment provides a manufacturing process for ultra-high single-layer wire drawing, specifically including the following steps: Step S1: Weaving of ultra-high single-layer drawn base fabric The weaving is performed using a double-needle bed warp knitting machine. High-strength polyester filament is used as the drawing fiber raw material, with a breaking strength of 6.5 cN / dtex and a breaking elongation of 20%. The double-needle bed spacing H is set to 30 cm, and a single-layer drawing structure is formed by weaving between the upper and lower needle beds through warp knitting.

[0022] like Figure 2 As shown, the woven ultra-high single-layer drawn fabric includes an upper mesh fabric 1, a lower mesh fabric 2, and drawn fibers 3 connecting the two. The drawn structure is composed of multiple X-shaped drawn units interconnected, with adjacent drawn units arranged in rows and crisscrossed. The upper end of each drawn unit connects to the vertices of the upper mesh fabric 1, and the lower end connects to the vertices of the lower mesh fabric 2, forming a stable three-dimensional support structure. Compared with the straight-weave drawn structure, this X-shaped drawn unit structure has higher compressive strength and structural stability, and can maintain good support performance even under ultra-high thickness conditions.

[0023] The linear density of the drawn fiber 3 is 1500D. Both the upper mesh fabric 1 and the lower mesh fabric 2 are formed by interlacing warp and weft threads to create a quadrilateral mesh, with a mesh density of 16 squares / cm². 2 .

[0024] Step S2: Heat setting treatment The ultra-high single-layer drawn fabric woven in step S1 is sent to a heat-setting oven for heat setting treatment. A segmented heating method is adopted: the first segment is heated at 185℃ and held for 2.5 minutes; the second segment is heated at 210℃ and held for 1.5 minutes; this causes the molecular chains of the drawn fibers to align in an oriented manner, eliminates the internal stress generated during weaving, and maintains the vertical orientation of the drawn fibers at an ultra-high thickness of 30cm.

[0025] Then, cooling and shaping are carried out: the base fabric is removed from the oven and allowed to cool naturally for 4 minutes at an ambient temperature of 20~25℃ to fully shape the fiber molecular chains.

[0026] Step S3: Laminating the top layer and the bottom layer A high-frequency heat sealing process is used to laminate the top and bottom layers. A 0.5mm thick TPU film is selected as the material for both the top and bottom layers.

[0027] A 0.10mm thick TPU hot melt adhesive film is placed between the upper surface of the upper mesh fabric 1 and the upper TPU film layer 4, and between the lower surface of the lower mesh fabric 2 and the lower TPU film layer 5. The composite is placed on the worktable of a high-frequency heat sealing machine, with the heat sealing frequency set to 27.12MHz, the heat sealing temperature to 180℃, the heat sealing pressure to 0.5MPa, and the heat sealing time to 10 seconds.

[0028] Before heat sealing, the composite area is preheated at 90°C for 3 seconds to improve the uniformity of heat sealing.

[0029] After heat sealing, the upper TPU film layer 4 is firmly bonded to the upper surface of the upper mesh fabric 1 to form the surface layer, and the lower TPU film layer 5 is firmly bonded to the lower surface of the lower mesh fabric 2 to form the bottom layer. Figure 3 The cross-sectional structure after the composite is completed is shown: from top to bottom, it consists of upper TPU film layer 4, upper mesh fabric 1, drawn fiber 3, lower mesh fabric 2, and lower TPU film layer 5.

[0030] Step S4: Circumferential edge sealing The composite obtained in step S3 is cut to the predetermined mattress size of 200cm × 150cm. A TPU composite fabric strip with a width of 32cm (greater than the 30cm spacing between the double needle beds) is selected as the wrap 6.

[0031] The upper end of the sheath 6 is sealed to the edge of the top layer (i.e., the upper TPU film layer 4) by high-frequency heat sealing, and the lower end of the sheath 6 is sealed to the edge of the bottom layer (i.e., the lower TPU film layer 5) by high-frequency heat sealing, thereby forming a sealed air chamber 9 between the top layer, the bottom layer and the sheath.

[0032] The overlap width between the heat-sealed band 6 and the top and bottom layers is 5cm. To enhance sealing reliability, a double-pass welding method is adopted: two parallel sealing welds are formed on the inner and outer sides, namely the inner weld 7 and the outer weld 8. The distance between the two welds is 2cm, and the width of each weld is 2cm, ultimately forming a sealing welded band with a width of 5cm.

[0033] Step S5: Install the air valve A 2cm diameter air nozzle mounting hole is made at a predetermined position (10cm from the edge) on the surface layer (upper TPU film layer 4). A standard air nozzle 10 is installed in the mounting hole, and the air nozzle 10 is sealed and fixed to the surface layer by high-frequency heat sealing. The heat sealing frequency is 27.12MHz, the heat sealing temperature is 170℃, and the heat sealing time is 8 seconds, forming an inflation / deflation channel.

[0034] Step S6: Finished Product Inspection The finished product obtained in step S5 is subjected to an inflation test. Inflate the sealed air chamber 9 through the air nozzle 10 until the pressure reaches 0.05 MPa, maintain this pressure for 24 hours, and then measure the air pressure again.

[0035] Test results: The initial air pressure was 0.050 MPa, and the air pressure was 0.0485 MPa after 24 hours. The air pressure drop rate was 3.0%, which is less than the requirement of 5%.

[0036] Simultaneously, a mattress surface flatness test was conducted: a level was placed on the inflated mattress surface to measure the height difference at various points on the mattress surface, within any 1m range. 2 The maximum height difference within the area is 3.2mm, which is less than the requirement of 5mm. For example... Figure 5 As shown, the mattress surface was divided into 1m × 1m squares (200cm × 150cm was divided into 2 × 1.5 = 3 complete squares plus the edge area). The height was measured at the four vertices and the center point of each square. The maximum height difference occurred in square A (the center area), Δh = 3.1mm < 5mm, which is acceptable. The mattress surface showed no obvious unevenness, and the support was evenly distributed, indicating that the 30cm ultra-high single-layer brushed structure has good stability and flatness when inflated. Example 2

[0037] This embodiment is basically the same as Embodiment 1, except that the distance H between the double needle beds is set to 40cm in step S1, the linear density of the drawing fiber 3 is 1800D, and the mesh density of the upper mesh fabric 1 and the lower mesh fabric 2 is 14 meshes / cm. 2 .

[0038] In step S2, the heat setting parameters are adjusted accordingly: the first stage heating temperature is 190℃, and the holding time is 3 minutes; the second stage heating temperature is 215℃, and the holding time is 2 minutes; the cooling and setting time is 5 minutes.

[0039] In step S3, the high-frequency heat sealing temperature is 190℃, the heat sealing pressure is 0.6MPa, and the heat sealing time is 12 seconds.

[0040] Test results: Inflation pressure 0.05 MPa, pressure drop rate after 24 hours 3.5%, maximum height difference in surface flatness 4.0 mm, all meeting requirements. The 40cm ultra-high single-layer wire drawing structure exhibits good support stability. Example 3

[0041] This embodiment is basically the same as Embodiment 1, except that the distance H between the double needle beds is set to 25cm in step S1, the linear density of the drawing fiber 3 is 1200D, and the mesh density of the upper mesh fabric 1 and the lower mesh fabric 2 is 18 meshes / cm. 2 .

[0042] The heat setting parameters in step S2 are as follows: the first stage heating temperature is 180℃ and the holding time is 2 minutes; the second stage heating temperature is 200℃ and the holding time is 1.5 minutes; and the cooling and setting time is 3 minutes.

[0043] In step S3, the high-frequency heat sealing temperature is 160℃, the heat sealing pressure is 0.4MPa, and the heat sealing time is 8 seconds.

[0044] Test results: The inflation pressure was 0.05 MPa, the pressure drop rate after 24 hours was 2.5%, and the maximum height difference in surface flatness was 2.8 mm, all of which met the requirements.

[0045] Comparative Example 1 This comparative example was prepared according to the conventional wire-drawn mattress manufacturing process in the existing technology. It was woven using a double-needle bed warp knitting machine, with the double-needle bed spacing H set at 12cm, the wire fiber linear density at 800D, and the mesh density at 10 squares / cm². 2 Without heat setting, the PVC film is directly bonded to the fiber-reinforced fabric using adhesive, and then sealed with a single-pass welding.

[0046] Test results: The inflation pressure was 0.05 MPa, and the pressure drop rate after 24 hours was 12%, exceeding the 5% requirement. The maximum height difference in surface flatness was 8.5 mm, exceeding the 5 mm requirement. The mattress surface exhibited obvious unevenness, indicating that conventionally manufactured brushed mattresses are inferior to this invention in terms of airtightness and surface flatness.

[0047] Comparative Example 2 The difference between this comparative example and Example 1 is that the distance H between the double needle beds set in step S1 is 55cm (exceeding the preferred range of the present invention), and the linear density of the drawn fiber is 800D.

[0048] Inspection results: Uneven tension of the drawing fibers during weaving resulted in some fibers becoming loose and bent. Inflation testing revealed significant indentations on the mattress surface, with a maximum height difference of 12mm, far exceeding the 5mm requirement for surface flatness. This indicates that when the spacing between the double needle beds is too large and the linear density of the drawing fibers is insufficient, the drawing structure struggles to maintain stable vertical orientation at extremely high thicknesses.

[0049] Comparative Example 3 The difference between this comparative example and Example 1 is that the heat setting process in step S2 is omitted.

[0050] Test results: After inflation, the mattress surface showed localized unevenness, with the maximum height difference measured at 7.8mm, exceeding the 5mm requirement. This indicates that the internal stress of the unheated, untreated fiber filaments was not fully released under ultra-high thickness conditions, affecting the maintenance of the fiber's vertical orientation.

[0051] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0052] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A manufacturing process for ultra-high single-layer wire drawing, characterized in that, Includes the following steps: Step S1: Weaving is performed using a double-needle-bed warp knitting machine, with high-strength polyester filament as the drawing fiber material. The distance H between the double needle beds is set to 20-50cm. A single-layer drawing structure is formed between the upper and lower needle beds through warp knitting. The drawing structure is composed of multiple X-shaped drawing units connected to each other. Adjacent drawing units are arranged in pairs and distributed in a crisscross pattern. The upper end of each drawing unit is connected to the upper mesh fabric woven on the upper needle bed, and the lower end is connected to the lower mesh fabric woven on the lower needle bed. The linear density of the drawing fiber is 1000D-2000D. The warp and weft threads of the upper and lower mesh fabrics interweave to form a mesh with a mesh density of 12-20 squares / cm. 2 ; Step S2: The ultra-high single-layer drawing base fabric woven in step S1 is sent into a heat setting oven for heat setting treatment. The setting temperature is 180~220℃ and the setting time is 3~8 minutes. This causes the molecular chains of the drawing fibers to align in an oriented manner, eliminates internal stress, and maintains the vertical orientation of the drawing fibers. Then, cooling setting is performed at a temperature of 20~30℃ for 2~5 minutes. Step S3: Using a high-frequency heat sealing process, the upper TPU film layer is laminated onto the upper surface of the upper mesh fabric of the ultra-high single-layer brushed base fabric treated in step S2 to form the surface layer; the lower TPU film layer is laminated onto the lower surface of the lower mesh fabric to form the bottom layer; the high-frequency heat sealing frequency is 27.12~40.68MHz, the heat sealing temperature is 150~200℃, the heat sealing pressure is 0.3~0.6MPa, and the heat sealing time is 5~15 seconds; Step S4: Cut the composite obtained in step S3 according to the predetermined mattress size. Set a band around the circumferential edge of the cut composite. The band is a TPU composite fabric strip. The upper end of the band is connected to the edge of the surface layer by high-frequency heat sealing, and the lower end of the band is connected to the edge of the bottom layer by high-frequency heat sealing to form a sealed air chamber. The width of the band is not less than the double needle bed spacing H set in step S1. Step S5: Open the air nozzle mounting hole at the predetermined position of the surface layer or the surrounding strip, install the air nozzle at the mounting hole, and seal and fix the air nozzle to the surface layer or the surrounding strip by high frequency heat sealing to form an air inflation / deflation channel. Step S6: Perform an inflation test on the finished product obtained in step S5. After the inflation pressure reaches 0.03~0.08MPa, maintain it for 24 hours and detect the pressure drop rate. The pressure drop rate should not exceed 5% in 24 hours.

2. The manufacturing process of ultra-high single-layer wire drawing according to claim 1, characterized in that, In step S1, the distance H between the two needle beds is 25~45cm.

3. The manufacturing process of ultra-high single-layer wire drawing according to claim 2, characterized in that, In step S1, the distance H between the two needle beds is 30~40cm.

4. The manufacturing process of ultra-high single-layer wire drawing according to claim 1, characterized in that, In step S1, the linear density of the drawn fiber is 1200D~1800D, and the mesh density of the upper and lower mesh fabrics is 14~18 meshes / cm. 2 .

5. The manufacturing process of ultra-high single-layer wire drawing according to claim 1, characterized in that, In step S1, the material of the drawing fiber is high-strength polyester filament, with a breaking strength of not less than 6.0 cN / dtex and a breaking elongation of 15~25%.

6. The manufacturing process of ultra-high single-layer wire drawing according to claim 1, characterized in that, In step S2, the heat setting process adopts a segmented heating method: the first stage heating temperature is 180~190℃, and the temperature is held for 2~3 minutes; the second stage heating temperature is 200~220℃, and the temperature is held for 1~2 minutes; the third stage is a natural cooling stage, where the temperature gradually drops from 200℃ to room temperature, and the cooling time is 3~5 minutes.

7. The manufacturing process of ultra-high single-layer wire drawing according to claim 1, characterized in that, In step S3, hot melt adhesive films are respectively set between the upper TPU film layer and the upper mesh fabric, and between the lower TPU film layer and the lower mesh fabric. The thickness of the hot melt adhesive film is 0.05~0.15mm, and the material is TPU hot melt adhesive or EVA hot melt adhesive.

8. The manufacturing process of ultra-high single-layer wire drawing according to claim 1, characterized in that, In step S3, the composite area is preheated before high-frequency heat sealing. The preheating temperature is 80~100℃ and the preheating time is 2~5 seconds.

9. The manufacturing process of ultra-high single-layer wire drawing according to claim 1, characterized in that, In step S4, the upper and lower ends of the shroud overlap with the surface and bottom layers by 3-8 cm, forming a sealed welding strip with a width of 2-5 cm after heat sealing.

10. The manufacturing process of ultra-high single-layer wire drawing according to claim 1, characterized in that, In step S4, the heat sealing of the shroud with the surface layer and the bottom layer adopts a double-pass welding method, that is, two parallel sealing welds are formed on the inner and outer sides respectively, and the distance between the two welds is 1~3cm.

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