A multi-laminate hollow fabric and a weaving method thereof

Abstract

The application provides a multi-layer hollow fabric and a weaving method thereof, which is woven by a double-rapier loom through warp lifting and weft weaving; wherein the weaving is to form an upper surface layer by upper warp yarns and upper weft yarns, form a lower surface layer by lower warp yarns and lower weft yarns, form an upper middle surface layer by upper middle warp yarns and upper middle weft yarns, form a lower middle surface layer by lower middle warp yarns and lower middle weft yarns, and connect and fix the upper surface layer, the upper middle surface layer, the lower middle surface layer and the lower surface layer together by first pile warp yarns, second pile warp yarns, third pile warp yarns and fourth pile warp yarns to form the multi-layer hollow fabric. The application can realize one-piece forming of the multi-layer hollow fabric.

Description

Technical Field

[0001] This invention relates to the field of fabric structure design and weaving technology, and in particular to a multi-layer hollow fabric and its weaving method. Background Technology

[0002] Hollow fabric is a three-dimensional fabric woven in one piece. Currently, hollow fabric commonly referred to is A-layer hollow fabric (containing two surface layers and a hollow pile warp layer). The pile warp layer refers to the two fabric surface layers connected by Z-direction fibers, which support a certain space in the fabric thickness direction according to a certain pattern. It is usually woven in one piece using high-performance fibers such as glass fiber, quartz fiber, carbon fiber, polyimide fiber, basalt fiber, and alumina fiber, presenting a hollow structure fabric with an equal height appearance.

[0003] The earliest industrial production of hollow fabrics appeared in the 1980s by the Dutch company Parabeam BV, and it is now a relatively mature industrial fabric in China. However, due to the special structure of this fabric, all currently disclosed products are A-layer hollow fabrics, and there are no reports on multi-layer hollow fabrics (containing three face layers and two core layers). Furthermore, the existing weaving methods for A-layer hollow fabrics are not suitable for weaving multi-layer hollow fabrics, making it impossible to achieve one-piece molding of multi-layer hollow fabrics. Therefore, in order to solve the above problems, it is necessary to provide a multi-layer hollow fabric and its weaving method. Summary of the Invention

[0004] This invention provides a multi-layer hollow fabric and its weaving method, which can realize the one-piece molding of multi-layer hollow fabric.

[0005] In a first aspect, the present invention provides a method for weaving a multi-layered hollow fabric, wherein the weaving method is performed using a double rapier loom with warp heddles and weft beaters; wherein the weaving involves forming an upper layer of warp yarns and upper weft yarns to form an upper layer, a lower layer of warp yarns and lower weft yarns to form a lower layer, an upper middle layer of warp yarns and upper middle layer of weft yarns to form an upper middle layer, and a lower middle layer of warp yarns and lower middle layer of weft yarns to form a lower middle layer, wherein the upper layer, the upper middle layer, the lower middle layer, and the lower layer are connected and fixed together by a first pile warp yarn, a second pile warp yarn, a third pile warp yarn, and a fourth pile warp yarn to form the multi-layered hollow fabric.

[0006] Preferably, the bonding methods of the first pile warp yarn, the second pile warp yarn, the third pile warp yarn, and the fourth pile warp yarn are as follows:

[0007] After the first pile warp yarn is M-shapedly fixed with the upper layer weft yarn, it is WN-shapedly fixed downwards with the upper and lower middle layer weft yarns, W-shapedly fixed downwards with the lower layer weft yarn, and then MU-shapedly fixed upwards with the upper and lower middle layer weft yarns.

[0008] After the second pile warp yarn is fixed with the lower layer weft yarn in a W-shape, it is fixed upward with the upper middle layer weft yarn and the lower middle layer weft yarn in a MU-shape, then fixed upward with the upper layer weft yarn in an M-shape, and finally fixed downward with the upper middle layer weft yarn and the lower middle layer weft yarn in a WN-shape.

[0009] After the third pile warp yarn is M-shapedly fixed with the upper and lower middle layer weft yarns, it is W-shapedly fixed downwards with the lower layer weft yarn, MU-shapedly fixed upwards with the upper and lower middle layer weft yarns, M-shapedly fixed upwards with the upper layer weft yarn, and then U-shapedly fixed downwards with the upper and lower middle layer weft yarns.

[0010] After the fourth warp yarn is fixed in a W-shape with the upper and lower middle layer weft yarns, it is fixed in an M-shape with the upper layer weft yarn, and then fixed in a WN-shape with the upper and lower middle layer weft yarns. After that, it is fixed in a W-shape with the lower layer weft yarn, and then fixed in an N-shape with the upper and lower middle layer weft yarns.

[0011] The above consolidation method is continuously cyclical to consolidate and connect the upper layer, upper middle layer, lower middle layer and lower layer together.

[0012] Preferably, the overall weft count of the multi-layer hollow fabric is 24 to 360 wefts per cycle.

[0013] Preferably, the double rapier loom includes 12 rows of heddle frames; wherein, the 1st to 4th heddle frames are used to insert the pile warp yarn, the 5th to 8th heddle frames are used to insert the upper middle layer ground warp yarn and the lower middle layer ground warp yarn, the 9th to 10th heddle frames are used to insert the upper layer ground warp yarn, and the 11th to 12th heddle frames are used to insert the lower layer ground warp yarn.

[0014] Preferably, in the double rapier loom, heddle frames 1, 2, 3, and 4 are middle heddle frames, and the movement stroke of the heddle frames is divided into "↑", "-", and "↓"; heddle frames 5, 6, 9, and 10 are upper heddle frames, and the movement stroke of the heddle frames is divided into "↑" and "↓"; and heddle frames 7, 8, 11, and 12 are lower heddle frames, and the movement stroke of the heddle frames is divided into "↑" and "↓".

[0015] Preferably, during the weaving process, the reed is 60# to 150#, and the weft density is 32 to 60 threads / cm; the heddle threading sequence is 1.5.6.2.9.10.3.7.8.4.11.12 for one cycle, and the reed threading sequence is 1.5.6.2.9.10 / 3.7.8.4.11.12 for one cycle.

[0016] Preferably, the overall weft count of the multi-layer hollow fabric is 36 wefts / cycle;

[0017] The heddle raising and beating-up weaving process is as follows:

[0018] First latitude: 1↑2↓3↑4↓5↑6↓7↑8↓9↑10↑11↓12↓

[0019] Second latitude: 1↑2↓3-4-5↓6↓7↑8↑9↑10↓11↑12↓

[0020] Third Latitude: 1↑2↓3↓4↑5↓6↑7↓8↑9↑10↑11↓12↓

[0021] Fourth Latitude: 1-2-3-4-5↓6↓7↑8↑9↓10↑11↓12↑

[0022] Fifth Latitude: 1↑2↓3↑4↓5↑6↓7↑8↓9↑10↑11↓12↓

[0023] Sixth Latitude: 1↑2↓3-4-5↓6↓7↑8↑9↑10↓11↑12↓

[0024] Seventh Latitude: 1↑2↓3↓4↑5↓6↑7↓8↑9↑10↑11↓12↓

[0025] Eighth Latitude: 1-2-3-4-5↓6↓7↑8↑9↓10↑11↓12↑

[0026] Ninth Latitude: 1↓2↑3↓4↑5↑6↓7↑8↓9↑10↑11↓12↓

[0027] 10th Latitude: 1-2-3↓4↑5↓6↓7↑8↑9↑10↓11↑12↓

[0028] 11th Latitude: 1↑2↓3↓4↑5↓6↑7↓8↑9↑10↑11↓12↓

[0029] 12th Latitude: 1-2-3-4-5↓6↓7↑8↑9↓10↑11↓12↑

[0030] 13th Latitude: 1↓2↑3↓4↑5↑6↓7↑8↓9↑10↑11↓12↓

[0031] 14th Latitude: 1-2-3↓4↑5↓6↓7↑8↑9↑10↓11↑12↓

[0032] 15th Latitude: 1↑2↓3↓4↑5↓6↑7↓8↑9↑10↑11↓12↓

[0033] 16th Latitude: 1-2-3-4-5↓6↓7↑8↑9↓10↑11↓12↑

[0034] 17th Latitude: 1↓2↑3↑4↓5↑6↓7↑8↓9↑10↑11↓12↓

[0035] 18th Latitude: 1-2-3-4-5↓6↓7↑8↑9↑10↓11↑12↓

[0036] 19th Latitude: 1↓2↑3↓4↑5↓6↑7↓8↑9↑10↑11↓12↓

[0037] 20th Latitude: 1↓2↑3-4-5↓6↓7↑8↑9↓10↑11↓12↑

[0038] 21st Latitude: 1↓2↑3↑4↓5↑6↓7↑8↓9↑10↑11↓12↓

[0039] 22nd Latitude: 1-2-3-4-5↓6↓7↑8↑9↑10↓11↑12↓

[0040] 23rd Latitude: 1↓2↑3↓4↑5↓6↑7↓8↑9↑10↑11↓12↓

[0041] 24th Latitude: 1↓2↑3-4-5↓6↓7↑8↑9↓10↑11↓12↑

[0042] 25th Latitude: 1↓2↑3↑4↓5↑6↓7↑8↓9↑10↑11↓12↓

[0043] 26th Latitude: 1-2-3-4-5↓6↓7↑8↑9↑10↓11↑12↓

[0044] 27th Latitude: 1↑2↓3↑4↓5↓6↑7↓8↑9↑10↑11↓12↓

[0045] 28th Latitude: 1-2-3↑4↓5↓6↓7↑8↑9↓10↑11↓12↑

[0046] 29th Latitude: 1↓2↑3↑4↓5↑6↓7↑8↓9↑10↑11↓12↓

[0047] 30th Latitude: 1-2-3-4-5↓6↓7↑8↑9↑10↓11↑12↓

[0048] 31st Latitude: 1↑2↓3↑4↓5↓6↑7↓8↑9↑10↑11↓12↓

[0049] 32nd Latitude: 1-2-3↑4↓5↓6↓7↑8↑9↓10↑11↓12↑

[0050] 33rd Latitude: 1↓2↑3↑4↓5↑6↓7↑8↓9↑10↑11↓12↓

[0051] 34th Latitude: 1-2-3-4-5↓6↓7↑8↑9↑10↓11↑12↓

[0052] 35th Latitude: 1↑2↓3↓4↑5↓6↑7↓8↑9↑10↑11↓12↓

[0053] 36th latitude: 1-2-3-4-5↓6↓7↑8↑9↓10↑11↓12↑;

[0054] At this point, the heddles are raised and beaten in a cycle of thirty-six wefts, and the next cycle begins.

[0055] Preferably, the yarn types of the pile warp, warp yarn, and weft yarn are at least one of alkali-free glass fiber yarn, quartz fiber yarn, carbon fiber yarn, metal wire, ceramic matrix fiber yarn, or polyimide yarn.

[0056] Preferably, the upper layer and the lower layer are at least one of plain weave, twill weave, or satin weave; wherein the density of both warp and weft yarns is 8 to 15 yarns / cm;

[0057] Preferably, the upper intermediate layer and the lower intermediate layer are at least one of plain weave, twill weave, or satin weave; wherein the density of both warp and weft yarns is 8 to 15 yarns / cm.

[0058] Preferably, the thickness of the upper layer and the lower layer is 0.2 to 2.0 mm, and the height between the upper layer and the upper intermediate layer and the height between the lower layer and the lower intermediate layer are 3.0 to 20.0 mm.

[0059] Secondly, the present invention provides a multi-layered hollow fabric, which is prepared by any of the weaving methods described in the first aspect above.

[0060] Compared with the prior art, the present invention has at least the following beneficial effects:

[0061] (1) In this invention, the warp and weft yarns are first interwoven to form an upper layer, an upper middle layer, a lower middle layer and a lower layer respectively. Then, the upper layer, the upper middle layer, the lower middle layer and the lower layer are connected and fixed together by the first pile warp yarn, the second pile warp yarn, the third pile warp yarn and the fourth pile warp yarn, thereby realizing the continuous integral molding of multi-layer hollow fabric.

[0062] (2) In some preferred embodiments of the present invention, four types of pile warp yarns are used to fix and connect the upper layer, the upper middle layer, the lower middle layer and the lower layer together. The fixing method of the four types of pile warp yarns with the weft yarns in the upper layer, the upper middle layer, the lower middle layer and the lower layer is designed respectively. This not only helps to ensure the symmetrical coordination of the two core layer structures and make the cavity structure of the two core layers continuous and clear, but also helps to ensure the good stability of the whole hollow fabric after molding.

[0063] (3) In some preferred embodiments of the present invention, the weaving method of the present invention can achieve precise control of the thickness of multi-layer hollow fabrics, and can simultaneously adjust and design the thickness of three surface layers and the thickness of two core layers. Attached Figure Description

[0064] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0065] Figure 1 This is a schematic diagram of the structure of the upper layer, upper middle layer, lower middle layer and lower layer of a multi-layer hollow fabric provided by the present invention;

[0066] Figure 2 This is a schematic diagram of the consolidation structure of the pile warp yarns of a multi-layered hollow fabric provided by the present invention;

[0067] Figure 3 This is a schematic diagram of the structure of a multi-layer hollow fabric after molding, provided by the present invention;

[0068] In the diagram: 100 - Top layer; 200 - Middle top layer; 300 - Middle bottom layer; 400 - Bottom layer; 101 - Top layer warp yarn; 102 - Top layer weft yarn; 201 - Middle top layer warp yarn; 202 - Middle top layer weft yarn; 301 - Middle bottom layer warp yarn; 302 - Middle bottom layer weft yarn; 401 - Bottom layer warp yarn; 402 - Bottom layer weft yarn; 601 - First pile warp yarn; 602 - Second pile warp yarn; 603 - Third pile warp yarn; 604 - Fourth pile warp yarn. Detailed Implementation

[0069] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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 some embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0070] Multi-layer hollow fabric is a three-dimensional hollow fabric with two hollow core layers. It consists of three surface layers (upper, middle, and lower) and two hollow core layers (upper and lower). Although structurally, multi-layer hollow fabric is only one hollow core layer larger than A-layer hollow fabric, the conventional weaving methods for A-layer hollow fabric are completely unsuitable for multi-layer hollow fabric. Furthermore, because multi-layer hollow fabric involves two hollow core layers and three surface layers, its weaving process is more complex than that of A-layer hollow fabric, requiring consideration of more factors. In existing technologies, to obtain multi-layer hollow fabric, two layers of A-layer hollow fabric are typically integrally laminated. This method cannot achieve the integral molding of multi-layer hollow fabric. While this method can achieve a multi-layer hollow structure, the hollow fabric is not a single unit and has interlayer interfaces, resulting in insufficient overall stability and scalability.

[0071] Therefore, based on the above problems, in order to achieve continuous weaving of multi-layer hollow fabrics, the present invention provides a weaving method for multi-layer hollow fabrics. This weaving method uses a double rapier loom for warp lifting and weft beating. The weaving process involves forming an upper layer of warp and weft yarns to form an upper layer, a lower layer of warp and weft yarns to form a lower layer, an upper middle layer of warp and weft yarns to form an upper middle layer, and a lower middle layer of warp and weft yarns to form a lower middle layer. The upper layer, the upper middle layer, the lower middle layer, and the lower layer are then connected and fixed together by first pile warp yarns, second pile warp yarns, third pile warp yarns, and fourth pile warp yarns to form the multi-layer hollow fabric.

[0072] In embodiments of the present invention, such as Figure 1 and Figure 2 As shown, the warp and weft yarns are first interwoven to form the upper layer, upper middle layer, lower middle layer and lower layer respectively. Then, the upper layer, upper middle layer, lower middle layer and lower layer are connected and fixed together by the first pile warp yarn, the second pile warp yarn, the third pile warp yarn and the fourth pile warp yarn, thereby realizing the continuous integral molding of multi-layer hollow fabric.

[0073] According to some preferred embodiments, such as Figure 2As shown, the connection and fixing methods of the first, second, third, and fourth pile warp yarns are as follows:

[0074] After the first pile warp yarn is M-shapedly fixed with the upper layer weft yarn, it is WN-shapedly fixed downwards with the upper and lower middle layer weft yarns, W-shapedly fixed downwards with the lower layer weft yarn, and then MU-shapedly fixed upwards with the upper and lower middle layer weft yarns.

[0075] After the second pile warp yarn is fixed with the lower layer weft yarn in a W-shape, it is fixed upward with the upper middle layer weft yarn and the lower middle layer weft yarn in a MU-shape, then fixed upward with the upper layer weft yarn in an M-shape, and finally fixed downward with the upper middle layer weft yarn and the lower middle layer weft yarn in a WN-shape.

[0076] After the third pile warp yarn is M-shapedly fixed with the upper and lower middle layer weft yarns, it is W-shapedly fixed downwards with the lower layer weft yarn, MU-shapedly fixed upwards with the upper and lower middle layer weft yarns, M-shapedly fixed upwards with the upper layer weft yarn, and then U-shapedly fixed downwards with the upper and lower middle layer weft yarns.

[0077] After the fourth warp yarn is fixed in a W-shape with the upper and lower middle layer weft yarns, it is fixed in an M-shape with the upper layer weft yarn, and then fixed in a WN-shape with the upper and lower middle layer weft yarns. After that, it is fixed in a W-shape with the lower layer weft yarn, and then fixed in an N-shape with the upper and lower middle layer weft yarns.

[0078] The above consolidation method is continuously cyclical to consolidate and connect the upper layer, upper middle layer, lower middle layer and lower layer together.

[0079] For the weaving process of multi-layer hollow fabrics, the direction of the pile warp between the various surface layers is crucial for successful weaving. However, limited by only one pile warp head and four pile warp heald frames, to ensure a clear opening and stable fabric structure throughout the weaving process, it is essential to adhere to the principle of overall pile warp symmetry, thereby achieving effective control of the pile warp yarns over the intermediate surface layers. In this embodiment of the invention, four types of pile warp yarns are used to securely connect the upper layer, upper intermediate surface layer, lower intermediate surface layer, and lower layer together. The securing methods between the four types of pile warp yarns and the weft yarns in the upper, upper intermediate, lower intermediate, and lower layers are designed to not only ensure the symmetrical coordination of the two core layer structures, making the cavity structure of the two core layers continuous and clear, but also to ensure good stability of the overall hollow fabric after forming. In this embodiment, as shown... Figure 2 or Figure 3As shown, the shapes of the warp threads in the upper and lower core layers correspond one-to-one, and they exhibit alternating "8" and "V" shapes, resulting in strong overall structural stability. The cavity structures of the two core layers are continuous and clear. The preferred density of the upper and lower core layers is 20 threads / cm, i.e., 10 threads / cm*layer.

[0080] According to some preferred embodiments, the overall weft count of the multi-layer hollow fabric is 24 to 360 wefts / cycle; in this embodiment of the invention, the overall weft count of the multi-layer hollow fabric is preferably a multiple of 4, for example, it can be 24 wefts / cycle, 28 wefts / cycle, 32 wefts / cycle, 36 wefts / cycle, 40 wefts / cycle, 44 wefts / cycle, 48 wefts / cycle, 80 wefts / cycle, 100 wefts / cycle, 200 wefts / cycle, 300 wefts / cycle, or 360 wefts / cycle.

[0081] It should be noted that, in the present invention Figure 1 and Figure 2 In the diagram, the Arabic numerals 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, and 12 are the numbers of the heald frames in a double rapier loom, and ①②③…… represent the weft insertion sequence of the weft yarns.

[0082] In the weaving process of multi-layered hollow fabrics, the weft insertion sequence of the two rapiers directly affects the effective formation of the middle layer and the effective structural grip of the pile warp yarns when they jump and interweave between the three layers. Therefore, after overall analysis and multiple experiments, the weft insertion sequence of the upper and lower middle layers is the best for the formation of the hollow fabric structure and its stability after formation. Therefore, the weft insertion sequence in this embodiment is as follows: Figure 2 Configure it in the settings.

[0083] According to some preferred embodiments, the double rapier loom includes 12 rows of heddle frames; wherein, the 1st to 4th heddle frames are used to insert the pile warp yarn, the 5th to 8th heddle frames are used to insert the upper middle layer ground warp yarn and the lower middle layer ground warp yarn, the 9th to 10th heddle frames are used to insert the upper layer ground warp yarn, and the 11th to 12th heddle frames are used to insert the lower layer ground warp yarn.

[0084] According to some preferred embodiments, in the double rapier loom, heddle frames 1, 2, 3, and 4 are middle heddle frames, and the movement stroke of the heddle frames is divided into "↑", "-", and "↓"; heddle frames 5, 6, 9, and 10 are upper heddle frames, and the movement stroke of the heddle frames is divided into "↑" and "↓"; and heddle frames 7, 8, 11, and 12 are lower heddle frames, and the movement stroke of the heddle frames is divided into "↑" and "↓".

[0085] It should be noted that in the embodiments of the present invention, "↑", "-", and "↓" represent the upward movement, horizontal movement, and downward movement of the heald frame, respectively.

[0086] In this embodiment of the invention, a Van der Weil VTR42 double rapier loom is used for weaving. The effective width of the loom is 1270mm. The loom has 12 heald frames. The heald holes of heald frames 1 to 4 are centered, and each heald frame has ≥635 healds. Heald frames 5, 6, 9, and 10 are upper heald frames, with the corresponding heald holes located slightly above the center. Heald frames 7, 8, 11, and 12 are lower heald frames, with the corresponding heald holes located slightly below the center, and each heald frame has ≥645 healds. In this embodiment of the invention, the heald holes are preferably ceramic holes to reduce wear on the yarn, thus ensuring that yarn hairiness is reduced throughout the weaving process. In this embodiment of the invention, the first to fourth heald frames in the loom are used to insert the pile warp yarn, the fifth to eighth heald frames are used to insert the upper and lower middle layer ground warp yarn, the ninth to tenth heald frames are used to insert the upper layer ground warp yarn, and the eleventh to twelfth heald frames are used to insert the lower layer ground warp yarn.

[0087] Before weaving hollow fabrics, it is necessary to design the structure of the face layer, core layer and the overall structure of the fabric to ensure the continuity and stability of the subsequent weaving process.

[0088] Design of hollow fabric surface layer structure: such as Figure 1 As shown, the multi-layered hollow fabric has three surface layers: the top layer, the middle layer (including the upper middle layer and the lower middle layer), and the bottom layer. There are eight rows of heald frames used to weave these three layers. To ensure effective fabric formation during weaving and to avoid adverse effects of the surface layers on the overall stability of the hollow fabric structure, the surface layer design must adhere to the principle of "structural symmetry" in heald frame movement; for example... Figure 1 As shown, for example, the 9th and 10th heddle frames are used to weave the upper layer. During the weaving of the upper layer, it is necessary to ensure that the movement directions of the 9th and 10th heddle frames are symmetrical. For example, during the weaving of the lower layer, it is necessary to ensure that the movement directions of the 11th and 12th heddle frames are symmetrical.

[0089] Design of hollow fabric core structure: such as Figure 2 As shown, the multi-layered hollow fabric has two core layers: an upper core layer and a lower core layer. There are four rows of heald frames used to weave these two core layers. To ensure effective fabric formation during weaving and to avoid the two core layers negatively impacting the overall stability of the hollow fabric structure, the four rows of heald frames for weaving the pile warp must not only adhere to the "structural symmetry" of heald frame movement, but also consider the trend of each heald frame in the three facets and the corresponding position of its heald frame when threading the reed. That is, the yarns of two structurally asymmetrical heald frames must not be threaded into the same reed tooth; otherwise, unclear opening during weaving will occur. Figure 2As can be seen from the embodiments of the present invention, the movement directions of the first and second heddle frames are symmetrical, the movement directions of the third and fourth heddle frames are symmetrical, and the pile warp yarns in the four heddle frames all participate in the weaving of the three surface layers. The overall structure is symmetrical and coordinated, which is conducive to the structural stability of the multi-layer hollow fabric after molding, and thus makes it easier to realize the subsequent composite molding process.

[0090] After the surface layer structure and core layer structure are designed, the two parts need to be integrated into a whole. At this time, the number of weft yarn cycles of the three surface layer structures and the two core layer structures needs to be matched first. In this embodiment of the invention, the number of weft yarn cycles of the surface layer structure is preferably 4 weft / cycle, and the number of weft yarn cycles of the core layer structure is preferably 36 weft / cycle. The least common multiple of the two is then taken to determine the number of weft yarn cycles of the overall hollow fabric structure as 36 weft / cycle. Secondly, the weft insertion sequence of the weft yarns during weaving needs to be considered. Therefore, the weft insertion sequence of the two rapiers directly affects the final effective forming of the middle surface layer and the effective structural grip of the pile warp yarns when jumping and interweaving between the three surface layers. Therefore, after overall analysis, the weft insertion sequence of this embodiment is set as shown in Table 1. At this point, the fabric structure design is completed.

[0091] According to some preferred embodiments, during the weaving process, the reed is 60# to 150#, and the weft density is 32 to 60 threads / cm; the heddle threading sequence is 1.5.6.2.9.10.3.7.8.4.11.12 for one cycle, and the reed threading sequence is 1.5.6.2.9.10 / 3.7.8.4.11.12 for one cycle.

[0092] In the weaving process of hollow fabrics, the order of heddle threading and reed threading determines the relative positions of the pile warp yarns and the ground warp yarns. An unreasonable order of heddle threading and reed threading will cause the yarns in the same reed tooth to stick together during the movement, resulting in unclear opening. In severe cases, some pile warp or ground warp may not be able to be integrated into the whole fabric during the weaving process, resulting in floating threads and fabric defects. Therefore, the order of heddle threading and reed threading is crucial. In this embodiment of the invention, to ensure the smooth progress of the hollow fabric weaving process and the better organizational effect of the hollow fabric, 60# to 150# steel reeds are used. Each reed has 2 pile warp yarns and 4 ground warp yarns threaded through it. According to the fabric design structure, the threading sequence of the heddle is designed as 1.5.6.2.9.10.3.7.8.4.11.12 as one cycle, and the reed threading sequence is designed as 1.5.6.2.9.10 / 3.7.8.4.11.12 as one cycle. In this way, the pile warp yarns can be separated from the ground warp yarns in the arrangement sequence, and the ground warp yarns of two adjacent heddle frames are woven from the same surface layer. In this way, during the movement of the heddle frames, two adjacent heddle frames only involve the weaving of one surface layer, thereby avoiding the situation of adhesion, pulling and unclear opening caused by the movement of yarns and heddle frames in other surface layers in certain positions.

[0093] It should also be noted that, in order to ensure that the hollow fabric is symmetrically formed and evenly stressed during the weaving process, and to achieve good forming stability, the reed used in this embodiment of the invention is an irregularly shaped reed, such as the French BURCKLE 1-23-78270 irregularly shaped reed. This reed can ensure that the weft insertion positions of the two weft yarns entering at the same time and the reed insertion positions are consistent, thus achieving good forming stability of the hollow fabric.

[0094] According to the design structure of hollow fabric, a higher weft density is beneficial to fabric formation, but not to continuous weaving, and can easily cause problems such as weft tip forward rush and fabric twisting. Therefore, in order to further ensure the smooth weaving process of hollow fabric and to further ensure the good structural stability of hollow fabric, after multiple experiments, the weft density in this embodiment of the invention is preferably set to 40 threads / cm.

[0095] According to some preferred embodiments, the overall weft yarn count of the multi-layer hollow fabric is preferably 36 wefts / cycle. Taking an overall weft yarn count of 36 wefts / cycle as an example, the heddle raising and beating weft weaving process is as follows:

[0096] First latitude: 1↑2↓3↑4↓5↑6↓7↑8↓9↑10↑11↓12↓

[0097] Second latitude: 1↑2↓3-4-5↓6↓7↑8↑9↑10↓11↑12↓

[0098] Third Latitude: 1↑2↓3↓4↑5↓6↑7↓8↑9↑10↑11↓12↓

[0099] Fourth Latitude: 1-2-3-4-5↓6↓7↑8↑9↓10↑11↓12↑

[0100] Fifth Latitude: 1↑2↓3↑4↓5↑6↓7↑8↓9↑10↑11↓12↓

[0101] Sixth Latitude: 1↑2↓3-4-5↓6↓7↑8↑9↑10↓11↑12↓

[0102] Seventh Latitude: 1↑2↓3↓4↑5↓6↑7↓8↑9↑10↑11↓12↓

[0103] Eighth Latitude: 1-2-3-4-5↓6↓7↑8↑9↓10↑11↓12↑

[0104] Ninth Latitude: 1↓2↑3↓4↑5↑6↓7↑8↓9↑10↑11↓12↓

[0105] 10th Latitude: 1-2-3↓4↑5↓6↓7↑8↑9↑10↓11↑12↓

[0106] 11th Latitude: 1↑2↓3↓4↑5↓6↑7↓8↑9↑10↑11↓12↓

[0107] 12th Latitude: 1-2-3-4-5↓6↓7↑8↑9↓10↑11↓12↑

[0108] 13th Latitude: 1↓2↑3↓4↑5↑6↓7↑8↓9↑10↑11↓12↓

[0109] 14th Latitude: 1-2-3↓4↑5↓6↓7↑8↑9↑10↓11↑12↓

[0110] 15th Latitude: 1↑2↓3↓4↑5↓6↑7↓8↑9↑10↑11↓12↓

[0111] 16th Latitude: 1-2-3-4-5↓6↓7↑8↑9↓10↑11↓12↑

[0112] 17th Latitude: 1↓2↑3↑4↓5↑6↓7↑8↓9↑10↑11↓12↓

[0113] 18th Latitude: 1-2-3-4-5↓6↓7↑8↑9↑10↓11↑12↓

[0114] 19th Latitude: 1↓2↑3↓4↑5↓6↑7↓8↑9↑10↑11↓12↓

[0115] 20th Latitude: 1↓2↑3-4-5↓6↓7↑8↑9↓10↑11↓12↑

[0116] 21st Latitude: 1↓2↑3↑4↓5↑6↓7↑8↓9↑10↑11↓12↓

[0117] 22nd Latitude: 1-2-3-4-5↓6↓7↑8↑9↑10↓11↑12↓

[0118] 23rd Latitude: 1↓2↑3↓4↑5↓6↑7↓8↑9↑10↑11↓12↓

[0119] 24th Latitude: 1↓2↑3-4-5↓6↓7↑8↑9↓10↑11↓12↑

[0120] 25th Latitude: 1↓2↑3↑4↓5↑6↓7↑8↓9↑10↑11↓12↓

[0121] 26th Latitude: 1-2-3-4-5↓6↓7↑8↑9↑10↓11↑12↓

[0122] 27th Latitude: 1↑2↓3↑4↓5↓6↑7↓8↑9↑10↑11↓12↓

[0123] 28th Latitude: 1-2-3↑4↓5↓6↓7↑8↑9↓10↑11↓12↑

[0124] 29th Latitude: 1↓2↑3↑4↓5↑6↓7↑8↓9↑10↑11↓12↓30th Latitude: 1-2-3-4-5↓6↓7↑8↑9↑10↓11↑12↓

[0125] 31st Latitude: 1↑2↓3↑4↓5↓6↑7↓8↑9↑10↑11↓12↓

[0126] 32nd Latitude: 1-2-3↑4↓5↓6↓7↑8↑9↓10↑11↓12↑

[0127] 33rd Latitude: 1↓2↑3↑4↓5↑6↓7↑8↓9↑10↑11↓12↓

[0128] 34th Latitude: 1-2-3-4-5↓6↓7↑8↑9↑10↓11↑12↓

[0129] 35th Latitude: 1↑2↓3↓4↑5↓6↑7↓8↑9↑10↑11↓12↓

[0130] 36th latitude: 1-2-3-4-5↓6↓7↑8↑9↓10↑11↓12↑;

[0131] At this point, the heddles are raised and beaten in a cycle of thirty-six wefts, and the next cycle begins.

[0132] It should be noted that when the overall weft yarn count of the multi-layer hollow fabric in the embodiments of the present invention is other than other counts, the order of heddle lifting and weft beating needs to be adjusted accordingly.

[0133] According to some preferred embodiments, the yarn types of the pile warp, warp yarn and weft yarn are at least one of alkali-free glass fiber yarn, quartz fiber yarn, carbon fiber yarn, metal wire, ceramic matrix fiber yarn or polyimide yarn.

[0134] It should be noted that, in the embodiments of the present invention, the selection of the yarn types of the pile warp yarn, warp yarn and weft yarn is mainly based on the purpose and performance requirements of the final hollow fabric forming, including but not limited to the above-mentioned yarn types. For example, it can also be ultra-high molecular weight polyethylene yarn and chemical fiber yarn (such as polyester, aramid, etc.).

[0135] According to some preferred embodiments, the upper layer and the lower layer are at least one of plain weave, twill weave or satin weave; wherein the density of both warp and weft yarns is 8 to 15 yarns / cm (for example, it can be 8 yarns / cm, 10 yarns / cm, 12 yarns / cm or 15 yarns / cm);

[0136] The upper and lower intermediate layers are both plain weave, twill weave, or satin weave; wherein the density of both warp and weft yarns is 8 to 15 yarns / cm (for example, it can be 8 yarns / cm, 10 yarns / cm, 12 yarns / cm, or 15 yarns / cm).

[0137] In this embodiment of the invention, the upper layer, upper middle layer, lower middle layer, and lower layer can also be other combined planar weave structures, such as plain weave, square plain weave, reinforced twill, herringbone twill, reinforced satin, and variable satin. However, when the upper layer, upper middle layer, lower middle layer, and lower layer are all preferably plain weave structures, compared with other structures such as twill, the plain weave structure is beneficial to ensuring the consolidation of yarns in each layer structure, and thus beneficial to ensuring the stability of the overall structure of the final multi-layer hollow fabric.

[0138] According to some preferred embodiments, the thickness of the top layer and the bottom layer is 0.2 to 2.0 mm (e.g., 0.3 mm, 0.4 mm, 0.8 mm, 1.2 mm, 1.8 mm, or 2.0 mm), the height between the top layer and the upper intermediate layer and between the bottom layer and the lower intermediate layer is 3.0 to 20.0 mm (e.g., 3 mm, 5 mm, 7 mm, 10 mm, 15 mm, or 20 mm), and the total height of the multi-layer hollow fabric is 4 to 48 mm (e.g., 4 mm, 8 mm, 10 mm, 20 mm, 30 mm, 40 mm, or 48 mm).

[0139] In this embodiment of the invention, during the weaving process, considering the double rapier equipment used, the fabric design structure, and the required warp and weft density, the ground warp beam adopts an active servo-driven tension control system. The ground warp tension is dynamically balanced within the range of 4.0 to 4.5. The pile warp beam is crucial for the pile formation of the hollow fabric. The pile warp tension is controlled by a pendulum-type passive tension control system to ensure effective forming even when the tension states differ significantly during pile formation and weaving. To ensure the continuous and stable forming height of the multi-layer hollow fabric, a servo-driven warp feeding system is used to precisely feed the pile warp, with the feeding amount controlled between 1.0 and 3.0. The take-up tension is mainly formed by the difference between the take-up mechanism roller speed and the fabric weaving speed. Since the multi-layer hollow fabric in this embodiment has a three-dimensional structure, the take-up tension cannot be set too high to avoid damage to the fabric structure due to misalignment during take-up. The take-up tension is preferably set to 10% to 20% according to the parameters of the double rapier equipment.

[0140] like Figure 3 As shown, the hollow fabric in this embodiment of the invention has a double-layer hollow structure after weaving. At this time, the conventional core-cylinder winding and rolling method is not conducive to the long-term storage and subsequent composite use of this structure fabric. The conventional rolling method usually compresses the three-dimensional fabric into a flat fabric for storage. After a period of storage, it is difficult for the structure to be directly restored to the initial three-dimensional state. Therefore, winding and storing is the intermediate transition storage method of the hollow fabric in this embodiment. After the fabric is off the machine, it will be unfolded and laid flat for storage to facilitate subsequent composite use.

[0141] Secondly, the present invention provides a multi-layered hollow fabric, which is prepared by any of the weaving methods described in the first aspect above.

[0142] This invention enables the continuous weaving of multi-layered hollow fabrics in a stable and reliable manner. The multi-layered hollow fabric structure is stable, and the heights of the two hollow layers and the thicknesses of the three surface layers can be designed. The embodiments of this invention allow for the control of the overall thickness of the multi-layered hollow fabric. The multi-layered hollow fabric prepared in these embodiments exhibits good overall consistency, scalability, and structural stability in practical applications, solving the problem of continuous weaving of multi-layered hollow fabrics and laying the foundation for future industrial-scale mass production.

[0143] To more clearly illustrate the technical solution and advantages of the present invention, a multi-layer hollow fabric and its weaving method are described in detail below through an embodiment.

[0144] Example 1:

[0145] A multi-layered hollow fabric, wherein the warp, weft, and pile warp yarns are all alkali-free glass fiber yarns with a density of 132 tex, and are woven by warp lifting heddles and weft beating on a double rapier loom;

[0146] (1) Warping:

[0147] This embodiment uses a single warp head for weaving. This warp head is prepared using a one-time warping method, and the specific preparation process parameters are shown in the table below:

[0148] Table 1

[0149] Warping process parameters Parameter Units Parameter value Yarn specifications tex 132 Total number of roots root 2540 Banner reed number Number 100# Number of threads per reed Root / teeth 2 Warp width centimeter 127 Warp length rice 1500 Warping speed meters / minute 50

[0150] This embodiment uses two ground warp heads for weaving. The ground warp heads are prepared using a single warping process. The specific preparation process parameters are shown in the table below:

[0151] Warping process parameters Parameter Units Parameter value Yarn specifications tex 132 Total number of roots root 2580 Banner reed number Number 100# Number of threads per reed Root / teeth 2 Warp width centimeter 129 Warp length rice 1000 Warping speed meters / minute 50

[0152] (2) Threading the heddle and reed:

[0153] The double rapier loom includes 12 heald frames; among them, heald frames 1-4 are used to thread the pile warp, heald frames 5-8 are used to thread the upper and lower middle layer ground warp, heald frames 9-10 are used to thread the upper layer ground warp, and heald frames 11-12 are used to thread the lower layer ground warp; the reed is 100#, with a weft density of 40 threads / cm, and the heald threading sequence is 1.5.6.2.9.10.3.7.8.4.11.12 / one cycle, and the reed threading sequence is 1.5.6.2.9.10 / 3.7.8.4.11.12 / one cycle;

[0154] (3) Weaving on the loom:

[0155] The upper warp and weft yarns form the upper surface layer, the lower warp and weft yarns form the lower surface layer, the upper middle warp and weft yarns form the upper middle surface layer, and the lower middle warp and weft yarns form the lower middle surface layer. The first pile warp yarn is M-shapedly bonded to the upper weft yarn, then WN-shapedly bonded downwards to the upper and lower middle weft yarns, then W-shapedly bonded downwards to the lower weft yarn, and finally MU-shapedly bonded upwards to the upper and lower middle weft yarns. The second pile warp yarn is W-shapedly bonded to the lower weft yarn, then MU-shapedly bonded upwards to the upper and lower middle weft yarns, then M-shapedly bonded upwards to the upper weft yarn, and finally WN-shapedly bonded downwards to the upper and lower middle weft yarns. The third pile warp yarn... After M-shaped fastening with the upper and lower intermediate layer weft yarns, the fourth warp yarn fastens downwards with the lower layer weft yarn in a W-shaped fastening, then upwards with the upper and lower intermediate layer weft yarns in a MU-shaped fastening, then upwards with the upper layer weft yarn in an M-shaped fastening, and finally downwards with the upper and lower intermediate layer weft yarns in a U-shaped fastening. After W-shaped fastening with the upper and lower intermediate layer weft yarns, the fourth warp yarn fastens upwards with the upper layer weft yarn in an M-shaped fastening, then downwards with the upper and lower intermediate layer weft yarns in a WN-shaped fastening, then downwards with the lower layer weft yarn in a W-shaped fastening, and finally upwards with the upper and lower intermediate layer weft yarns in an N-shaped fastening. This fastening method is continuously repeated to fasten and connect the upper layer, upper intermediate layer, lower intermediate layer, and lower layer together.

[0156] The specific process of heddle raising and beating weft weaving is as follows:

[0157] First latitude: 1↑2↓3↑4↓5↑6↓7↑8↓9↑10↑11↓12↓

[0158] Second latitude: 1↑2↓3-4-5↓6↓7↑8↑9↑10↓11↑12↓

[0159] Third Latitude: 1↑2↓3↓4↑5↓6↑7↓8↑9↑10↑11↓12↓

[0160] Fourth Latitude: 1-2-3-4-5↓6↓7↑8↑9↓10↑11↓12↑

[0161] Fifth Latitude: 1↑2↓3↑4↓5↑6↓7↑8↓9↑10↑11↓12↓

[0162] Sixth Latitude: 1↑2↓3-4-5↓6↓7↑8↑9↑10↓11↑12↓

[0163] Seventh Latitude: 1↑2↓3↓4↑5↓6↑7↓8↑9↑10↑11↓12↓

[0164] Eighth Latitude: 1-2-3-4-5↓6↓7↑8↑9↓10↑11↓12↑

[0165] Ninth Latitude: 1↓2↑3↓4↑5↑6↓7↑8↓9↑10↑11↓12↓

[0166] 10th Latitude: 1-2-3↓4↑5↓6↓7↑8↑9↑10↓11↑12↓

[0167] 11th Latitude: 1↑2↓3↓4↑5↓6↑7↓8↑9↑10↑11↓12↓

[0168] 12th Latitude: 1-2-3-4-5↓6↓7↑8↑9↓10↑11↓12↑

[0169] 13th Latitude: 1↓2↑3↓4↑5↑6↓7↑8↓9↑10↑11↓12↓

[0170] 14th Latitude: 1-2-3↓4↑5↓6↓7↑8↑9↑10↓11↑12↓

[0171] 15th Latitude: 1↑2↓3↓4↑5↓6↑7↓8↑9↑10↑11↓12↓

[0172] 16th Latitude: 1-2-3-4-5↓6↓7↑8↑9↓10↑11↓12↑

[0173] 17th Latitude: 1↓2↑3↑4↓5↑6↓7↑8↓9↑10↑11↓12↓

[0174] 18th Latitude: 1-2-3-4-5↓6↓7↑8↑9↑10↓11↑12↓

[0175] 19th Latitude: 1↓2↑3↓4↑5↓6↑7↓8↑9↑10↑11↓12↓

[0176] 20th Latitude: 1↓2↑3-4-5↓6↓7↑8↑9↓10↑11↓12↑

[0177] 21st Latitude: 1↓2↑3↑4↓5↑6↓7↑8↓9↑10↑11↓12↓

[0178] 22nd Latitude: 1-2-3-4-5↓6↓7↑8↑9↑10↓11↑12↓

[0179] 23rd Latitude: 1↓2↑3↓4↑5↓6↑7↓8↑9↑10↑11↓12↓

[0180] 24th Latitude: 1↓2↑3-4-5↓6↓7↑8↑9↓10↑11↓12↑

[0181] 25th Latitude: 1↓2↑3↑4↓5↑6↓7↑8↓9↑10↑11↓12↓

[0182] 26th Latitude: 1-2-3-4-5↓6↓7↑8↑9↑10↓11↑12↓

[0183] 27th Latitude: 1↑2↓3↑4↓5↓6↑7↓8↑9↑10↑11↓12↓

[0184] 28th Latitude: 1-2-3↑4↓5↓6↓7↑8↑9↓10↑11↓12↑

[0185] 29th Latitude: 1↓2↑3↑4↓5↑6↓7↑8↓9↑10↑11↓12↓

[0186] 30th Latitude: 1-2-3-4-5↓6↓7↑8↑9↑10↓11↑12↓

[0187] 31st Latitude: 1↑2↓3↑4↓5↓6↑7↓8↑9↑10↑11↓12↓

[0188] 32nd Latitude: 1-2-3↑4↓5↓6↓7↑8↑9↓10↑11↓12↑

[0189] 33rd Latitude: 1↓2↑3↑4↓5↑6↓7↑8↓9↑10↑11↓12↓

[0190] 34th Latitude: 1-2-3-4-5↓6↓7↑8↑9↑10↓11↑12↓

[0191] 35th Latitude: 1↑2↓3↓4↑5↓6↑7↓8↑9↑10↑11↓12↓

[0192] 36th latitude: 1-2-3-4-5↓6↓7↑8↑9↓10↑11↓12↑;

[0193] At this point, the weft is raised and beaten in a cycle of thirty-six wefts, and the next cycle begins.

[0194] In this embodiment, the structure of the multi-layered hollow fabric obtained by weaving is as follows: Figure 3As shown, the top layer, upper middle layer, lower middle layer, and bottom layer are all plain weave, with a warp and weft density of 8 yarns / cm. The thickness of the top layer and bottom layer is 1.0mm, and the height between the top layer and upper middle layer, as well as between the bottom layer and lower middle layer, is 10mm.

[0195] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for weaving a multi-layered hollow fabric, characterized in that, It is woven using a double rapier loom with warp pulls and weft beaters; the weaving process involves forming the upper layer with the upper warp and upper weft yarns, forming the lower layer with the lower warp and lower weft yarns, forming the upper middle layer with the upper middle layer warp and upper middle layer weft yarns, and forming the lower middle layer with the lower middle layer ground warp and lower middle layer weft yarns. The upper layer, upper middle layer, lower middle layer and lower layer are connected and fixed together by the first pile warp, second pile warp, third pile warp and fourth pile warp yarns to form a multi-layered hollow fabric. The specific connection and consolidation methods are as follows: After the first pile warp yarn is M-shapedly fixed with the upper layer weft yarn, it is WN-shapedly fixed downwards with the upper and lower middle layer weft yarns, W-shapedly fixed downwards with the lower layer weft yarn, and then MU-shapedly fixed upwards with the upper and lower middle layer weft yarns. After the second pile warp yarn is fixed with the lower layer weft yarn in a W-shape, it is fixed upward with the upper middle layer weft yarn and the lower middle layer weft yarn in a MU-shape, then fixed upward with the upper layer weft yarn in an M-shape, and finally fixed downward with the upper middle layer weft yarn and the lower middle layer weft yarn in a WN-shape. After the third pile warp yarn is M-shapedly fixed with the upper and lower middle layer weft yarns, it is W-shapedly fixed downwards with the lower layer weft yarn, MU-shapedly fixed upwards with the upper and lower middle layer weft yarns, M-shapedly fixed upwards with the upper layer weft yarn, and then U-shapedly fixed downwards with the upper and lower middle layer weft yarns. After the fourth warp yarn is fixed in a W-shape with the upper and lower middle layer weft yarns, it is fixed in an M-shape with the upper layer weft yarn, and then fixed in a WN-shape with the upper and lower middle layer weft yarns. After that, it is fixed in a W-shape with the lower layer weft yarn, and then fixed in an N-shape with the upper and lower middle layer weft yarns. The above consolidation method is continuously cyclical to consolidate and connect the upper layer, upper middle layer, lower middle layer and lower layer together; In a double rapier loom, heddle frames 1, 2, 3, and 4 are for middle heddle threads, with movement paths of "↑", "-", and "↓". Heddle frames 5, 6, 9, and 10 are for upper heddle threads, with movement paths of "↑" and "↓". Heddle frames 7, 8, 11, and 12 are for lower heddle threads, with movement paths of "↑" and "↓". During weaving, reeds of 60# to 150# are used, with a weft density of 32 to 60 threads / cm. The heddle threading sequence is 1.5.6.2.9.10.3.7.8.4.11.12 for one cycle, and the reed threading sequence is 1.5.6.2.9.10 / 3.7.8.4.11.12 for one cycle. The double rapier loom includes 12 heddle frames; among them, heddle frames 1 to 4 are used to insert the pile warp, heddle frames 5 to 8 are used to insert the upper and lower middle layer ground warp, heddle frames 9 to 10 are used to insert the upper layer ground warp, and heddle frames 11 to 12 are used to insert the lower layer ground warp.

2. The weaving method according to claim 1, characterized in that, The overall weft count of the multi-layered hollow fabric is 24 to 360 wefts per cycle.

3. The weaving method according to claim 1, characterized in that, The overall weft count of the multi-layered hollow fabric is 36 wefts / cycle. The specific process of heddle raising and beating weft weaving is as follows: First latitude: 1 ↑ 2 ↓ 3 ↑ 4 ↓ 5 ↑ 6 ↓ 7 ↑ 8 ↓ 9 ↑ 10 ↑ 11 ↓ 12 ↓ Second Latitude: 1 ↑ 2 ↓ 3 - 4 - 5 ↓ 6 ↓ 7 ↑ 8 ↑ 9 ↑ 10 ↓ 11 ↑ 12 ↓ Third Latitude: 1 ↑ 2 ↓ 3 ↓ 4 ↑ 5 ↓ 6 ↑ 7 ↓ 8 ↑ 9 ↑ 10 ↑ 11 ↓ 12 ↓ Fourth Latitude: 1 - 2 - 3 - 4 - 5 ↓ 6 ↓ 7 ↑ 8 ↑ 9 ↓ 10 ↑ 11 ↓ 12 ↑ Fifth Latitude: 1 ↑ 2 ↓ 3 ↑ 4 ↓ 5 ↑ 6 ↓ 7 ↑ 8 ↓ 9 ↑ 10 ↑ 11 ↓ 12 ↓ Sixth Latitude: 1 ↑ 2 ↓ 3 - 4 - 5 ↓ 6 ↓ 7 ↑ 8 ↑ 9 ↑ 10 ↓ 11 ↑ 12 ↓ Seventh Latitude: 1 ↑ 2 ↓ 3 ↓ 4 ↑ 5 ↓ 6 ↑ 7 ↓ 8 ↑ 9 ↑ 10 ↑ 11 ↓ 12 ↓ Eighth Latitude: 1 - 2 - 3 - 4 - 5 ↓ 6 ↓ 7 ↑ 8 ↑ 9 ↓ 10 ↑ 11 ↓ 12 ↑ Ninth Latitude: 1 ↓ 2 ↑ 3 ↓ 4 ↑ 5 ↑ 6 ↓ 7 ↑ 8 ↓ 9 ↑ 10 ↑ 11 ↓ 12 ↓ 10th Latitude: 1 - 2 - 3 ↓ 4 ↑ 5 ↓ 6 ↓ 7 ↑ 8 ↑ 9 ↑ 10 ↓ 11 ↑ 12 ↓ 11th Latitude: 1 ↑ 2 ↓ 3 ↓ 4 ↑ 5 ↓ 6 ↑ 7 ↓ 8 ↑ 9 ↑ 10 ↑ 11 ↓ 12 ↓ Latitude 12: 1 - 2 - 3 - 4 - 5 ↓ 6 ↓ 7 ↑ 8 ↑ 9 ↓ 10 ↑ 11 ↓ 12 ↑ Latitude 13: 1 ↓ 2 ↑ 3 ↓ 4 ↑ 5 ↑ 6 ↓ 7 ↑ 8 ↓ 9 ↑ 10 ↑ 11 ↓ 12 ↓ 14th Latitude: 1 - 2 - 3 ↓ 4 ↑ 5 ↓ 6 ↓ 7 ↑ 8 ↑ 9 ↑ 10 ↓ 11 ↑ 12 ↓ 15th Latitude: 1 ↑ 2 ↓ 3 ↓ 4 ↑ 5 ↓ 6 ↑ 7 ↓ 8 ↑ 9 ↑ 10 ↑ 11 ↓ 12 ↓ Sixteenth Latitude: 1 - 2 - 3 - 4 - 5 ↓ 6 ↓ 7 ↑ 8 ↑ 9 ↓ 10 ↑ 11 ↓ 12 ↑ 17th Latitude: 1 ↓ 2 ↑ 3 ↑ 4 ↓ 5 ↑ 6 ↓ 7 ↑ 8 ↓ 9 ↑ 10 ↑ 11 ↓ 12 ↓ 18th Latitude: 1 - 2 - 3 - 4 - 5 ↓ 6 ↓ 7 ↑ 8 ↑ 9 ↑ 10 ↓ 11 ↑ 12 ↓ 19th Latitude: 1 ↓ 2 ↑ 3 ↓ 4 ↑ 5 ↓ 6 ↑ 7 ↓ 8 ↑ 9 ↑ 10 ↑ 11 ↓ 12 ↓ 20th Latitude: 1 ↓ 2 ↑ 3 - 4 - 5 ↓ 6 ↓ 7 ↑ 8 ↑ 9 ↓ 10 ↑ 11 ↓ 12 ↑ Latitude 21: 1 ↓ 2 ↑ 3 ↑ 4 ↓ 5 ↑ 6 ↓ 7 ↑ 8 ↓ 9 ↑ 10 ↑ 11 ↓ 12 ↓ 22nd Latitude: 1 - 2 - 3 - 4 - 5 ↓ 6 ↓ 7 ↑ 8 ↑ 9 ↑ 10 ↓ 11 ↑ 12 ↓ 23rd Latitude: 1 ↓ 2 ↑ 3 ↓ 4 ↑ 5 ↓ 6 ↑ 7 ↓ 8 ↑ 9 ↑ 10 ↑ 11 ↓ 12 ↓ 24th Latitude: 1 ↓ 2 ↑ 3 - 4 - 5 ↓ 6 ↓ 7 ↑ 8 ↑ 9 ↓ 10 ↑ 11 ↓ 12 ↑ 25th Latitude: 1 ↓ 2 ↑ 3 ↑ 4 ↓ 5 ↑ 6 ↓ 7 ↑ 8 ↓ 9 ↑ 10 ↑ 11 ↓ 12 ↓ 26th Latitude: 1 - 2 - 3 - 4 - 5 ↓ 6 ↓ 7 ↑ 8 ↑ 9 ↑ 10 ↓ 11 ↑ 12 ↓ 27th Latitude: 1 ↑ 2 ↓ 3 ↑ 4 ↓ 5 ↓ 6 ↑ 7 ↓ 8 ↑ 9 ↑ 10 ↑ 11 ↓ 12 ↓ The 28th Latitude: 1 - 2 - 3 ↑ 4 ↓ 5 ↓ 6 ↓ 7 ↑ 8 ↑ 9 ↓ 10 ↑ 11 ↓ 12 ↑ 29th Latitude: 1 ↓ 2 ↑ 3 ↑ 4 ↓ 5 ↑ 6 ↓ 7 ↑ 8 ↓ 9 ↑ 10 ↑ 11 ↓ 12 ↓ 30th Latitude: 1 - 2 - 3 - 4 - 5 ↓ 6 ↓ 7 ↑ 8 ↑ 9 ↑ 10 ↓ 11 ↑ 12 ↓ Latitude 31: 1 ↑ 2 ↓ 3 ↑ 4 ↓ 5 ↓ 6 ↑ 7 ↓ 8 ↑ 9 ↑ 10 ↑ 11 ↓ 12 ↓ Latitude 32: 1 - 2 - 3 ↑ 4 ↓ 5 ↓ 6 ↓ 7 ↑ 8 ↑ 9 ↓ 10 ↑ 11 ↓ 12 ↑ Latitude 33: 1 ↓ 2 ↑ 3 ↑ 4 ↓ 5 ↑ 6 ↓ 7 ↑ 8 ↓ 9 ↑ 10 ↑ 11 ↓ 12 ↓ Latitude 34: 1 - 2 - 3 - 4 - 5 ↓ 6 ↓ 7 ↑ 8 ↑ 9 ↑ 10 ↓ 11 ↑ 12 ↓ Latitude 35: 1 ↑ 2 ↓ 3 ↓ 4 ↑ 5 ↓ 6 ↑ 7 ↓ 8 ↑ 9 ↑ 10 ↑ 11 ↓ 12 ↓ Latitude 36: 1 - 2 - 3 - 4 - 5 ↓ 6 ↓ 7 ↑ 8 ↑ 9 ↓ 10 ↑ 11 ↓ 12 ↑; At this point, the heddles are raised and beaten in a cycle of thirty-six wefts, and the next cycle begins.

4. The weaving method according to claim 1, characterized in that, The warp, weft, and pile yarns are all made of at least one of the following: alkali-free glass fiber yarn, quartz fiber yarn, carbon fiber yarn, metal wire, ceramic matrix fiber yarn, or polyimide yarn; and / or The yarn density of the pile warp, warp, and weft yarns is 66~330 tex.

5. The weaving method according to claim 1, characterized in that, Both the upper and lower layers are at least one of plain weave, twill weave, or satin weave; wherein the density of both warp and weft yarns is 8-15 yarns / cm; and / or The upper intermediate layer and the lower intermediate layer are both plain weave, twill weave or satin weave; wherein the density of warp and weft yarns is 8 to 15 yarns / cm.

6. The weaving method according to claim 1, characterized in that, The thickness of the top layer and the bottom layer is 0.2~2.0mm, and the height between the top layer and the upper intermediate layer and the height between the bottom layer and the lower intermediate layer are both 3.0~20.0mm.

7. A multi-layered hollow fabric, characterized in that, It is prepared by the weaving method according to any one of claims 1 to 6.

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