A method for preparing a warp-knitted jacquard woven mesh fabric

Abstract

The application relates to a preparation method of a warp-knitted jacquard woven mesh fabric, which mainly solves the problems of single form and monotonous cloth surface effect of the woven mesh fabric in the prior art, and comprises the following steps: 1) raw material selection: first warp yarn: TPU composite yarn; second warp yarn: UTPEE yarn; first weft yarn: first cotton high-elastic yarn; second weft yarn: second cotton high-elastic yarn; third weft yarn: third cotton high-elastic yarn; fourth weft yarn: TPU yarn; the TPU composite yarn comprises a core layer and a skin layer wrapped outside the core layer, the melting point of the core layer is not less than 190 DEG C, and the melting point of the skin layer is not greater than 170 DEG C; 2) weaving process: a weaving machine is used to weave the TPU composite yarn, the UTPEE yarn, the first cotton high-elastic yarn, the second cotton high-elastic yarn, the third cotton high-elastic yarn and the TPU yarn into a one-to-six form through a weaving heald method to form a grey cloth; 3) pre-setting process; 4) flat washing; and 5) tentering setting.

Description

Technical Field

[0001] This invention relates to a method for preparing a warp-knitted jacquard shuttle-woven mesh fabric. Background Technology

[0002] Woven fabrics are made by weaving yarns together on a shuttle loom using a shuttle-throwing method, resulting in a smooth surface, tight structure, durability, and resistance to wear and deformation. Woven mesh fabrics, on the other hand, are made by twisting warp and weft yarns together on a shuttle loom to form skeins. The fabric surface has clearly and evenly distributed skeins, with a lower warp and weft density, making it lightweight and breathable. This makes it widely used in some summer clothing, curtains, mosquito nets, and shoe uppers. However, the skein pattern is mostly square, resulting in a simpler shape and a monotonous fabric appearance. Summary of the Invention

[0003] Therefore, in view of the above problems, the present invention provides a method for preparing a warp-knitted jacquard woven mesh fabric, which mainly solves the problems of the single shape and monotonous fabric effect of the existing woven mesh fabric.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A method for preparing a warp-knitted jacati woven mesh fabric includes the following steps:

[0006] 1) Raw material selection: First warp: TPU composite yarn; Second warp: UTPEE yarn; First weft: First nylon high-elastic yarn; Second weft: Second nylon high-elastic yarn; Third weft: Third nylon high-elastic yarn; Fourth weft: TPU yarn; The TPU composite yarn includes a core layer and a sheath layer covering the outside of the core layer. The melting point of the core layer is not less than 190°C, and the melting point of the sheath layer is not greater than 170°C.

[0007] 2) Weaving process: The loom weaves TPU composite yarn, UTPEE yarn, first nylon high-elastic yarn, second nylon high-elastic yarn, third nylon high-elastic yarn, and TPU yarn in a one-to-six configuration to form a greige fabric. This results in one skein of the greige fabric having one TPU composite yarn as the warp and six UTPEE yarns as the ground warp, with one or more skeins having one TPU yarn. Then, the yarn structure is twisted once more. After the first nylon high-elastic yarn, second nylon high-elastic yarn, and third nylon high-elastic yarn are woven into the next row, a ribbing twist is performed simultaneously. For two or more adjacent skeins, the ribbing twist is performed first, followed by the yarn twist, thus forming a diamond or hexagonal mesh.

[0008] 3) Pre-setting process: The pre-setting process uses high-temperature hot air in the setting machine. The pre-setting temperature is set at 170℃ and the speed of the input fabric is set at 15 yards / min. The hot air is evenly applied to both sides of the fabric, so that the core layer of the TPU composite yarn does not melt and the skin layer is fully melted. When the temperature inside the closed oven of the setting machine is higher than the glass transition temperature of the fabric, the polymer inside the fiber raw material is reorganized, thereby changing the surface dimensions of the fabric.

[0009] 4) Flat-width washing;

[0010] 5) Tensioning: The tenter frame uses high-temperature hot air for tensioning and setting. The temperature of the tenter frame is set not higher than 160℃ to prevent the outer layer of the TPU composite yarn from melting again. The speed of the input fabric is set at 12 yards / min.

[0011] Furthermore, the warp density of the greige fabric is 51 strands / cm, the density of the greige fabric is 18 shuttles / cm, and the weight of the greige fabric is 396 g / m². 2 .

[0012] Furthermore, the first nylon high-elastic yarn includes a first filament and a second filament, which are spirally wound together, and the fiber fineness of the first filament and the second filament is 140D.

[0013] Furthermore, the third nylon high-elastic yarn includes a third filament, a fourth filament, a fifth filament, and a sixth filament, which are spirally wound together, and the fiber fineness of the third filament, the fourth filament, the fifth filament, and the sixth filament is 140D.

[0014] Furthermore, the fiber fineness of the second nylon high-elastic yarn is 140D.

[0015] Furthermore, the TPU composite yarn has a fiber fineness of 900D.

[0016] Furthermore, the UTPEE yarn has a fiber fineness of 144D.

[0017] Furthermore, the TPU yarn has a fiber fineness of 350D.

[0018] By adopting the aforementioned technical solution, the beneficial effects of this invention are as follows: The preparation method of this imitation warp-knitted jacquard woven mesh fabric has the following advantages:

[0019] 1) TPU composite yarn is used in the fabric, with 190℃ high-melting-point TPU as the core layer and 170℃ low-melting-point TPU as the skin layer. When the setting temperature is higher than 170℃, the core layer does not melt, while the skin layer melts and solidifies, bonding the warp and weft threads of the woven fabric and stabilizing the mesh shape;

[0020] 2) The loom uses a weaving method of twisting heddles to create six twists in one twist. In one twist group, the warp yarn is one TPU composite yarn and the ground yarn is six UTPEE yarns, both of which are transparent and transparent materials. The two twist each other to create clear and evenly distributed yarn holes on the surface.

[0021] 3) By misaligning two or more twisted groups and simultaneously twisting the yarn structure and ribbing structure, the traditional square shape of the woven yarn hole is broken, so that the mesh shape presents a rhombus or hexagon, just like the warp-knitted mesh.

[0022] 4) By utilizing the controllable design of the weft yarn floating on the surface, the weft stitches are continuously arranged on the surface. During the setting process, under the shrinkage effect of the TPU composite yarn and UTPEE yarn, a slightly raised texture is revealed on the surface, which is similar to warp-knitted jacquard stitch jacquard.

[0023] 5) The pre-setting high temperature and fast setting method and the finished product stretching setting method adopt a slightly lower temperature and slow setting method, so that the fabric surface is stable during the finished product setting and will not damage the internal structure of the raw material, thus extending the service life of the fabric. In addition, the greige fabric is woven from colored yarn, which does not require post-dyeing treatment. It only needs to be washed in the open width. At the same time, the fabric is degreased and modified by the auxiliary agents, thereby improving the morphological diversity of woven mesh fabric and the richness of the fabric surface effect. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the fabric structure in an embodiment of the present invention;

[0025] Figure 2 This is a three-dimensional structural diagram of the TPU composite yarn in an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of the first nylon high-elastic yarn in an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of the third nylon high-elastic yarn in an embodiment of the present invention;

[0028] Figure 5 This is a process flow diagram of flat-width water washing in an embodiment of the present invention. Detailed Implementation

[0029] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0030] The embodiments of the present invention are as follows:

[0031] refer to Figures 1 to 5 As shown, a method for preparing a warp-knitted jacquard woven mesh fabric includes the following steps:

[0032] 1) Raw material selection: First warp: TPU composite yarn 1; Second warp: UTPEE yarn 2; First weft: First nylon high-elastic yarn 3; Second weft: Second nylon high-elastic yarn 4; Third weft: Third nylon high-elastic yarn 5; Fourth weft: TPU yarn 6; The TPU composite yarn 1 includes a core layer 11 and a sheath layer 12 covering the outside of the core layer 11. The melting point of the core layer 11 is not less than 190℃, preferably 190℃, and the melting point of the sheath layer 12 is not greater than 170℃, preferably 170℃.

[0033] 2) Weaving Process: The loom weaves TPU composite yarn 1, UTPEE yarn 2, first nylon high-elastic yarn 3, second nylon high-elastic yarn 4, third nylon high-elastic yarn 5, and TPU yarn 6 in a one-skein-six configuration to form a grey fabric. In this configuration, each skein consists of one TPU composite yarn 1 as the warp and six UTPEE yarns 2 as the ground warp, with one TPU yarn 6 distributed across each skein. The yarn structure is then twisted once more. After weaving the first nylon high-elastic yarn 3, second nylon high-elastic yarn 4, and third nylon high-elastic yarn 5 into the next horizontal row, a ribbing twist is performed simultaneously. Adjacent skeins undergo ribbing twist first, followed by yarn twist, thus forming a diamond or hexagonal mesh. The grey fabric has a warp density of 51 strands / cm, a density of 18 shuttles / cm, and a weight of 396 g / m². 2 ;

[0034] Warp yarn data:

[0035]

[0036]

[0037] Weft yarn data:

[0038]

[0039] Furthermore, the first nylon high-elastic yarn 3 includes a first filament 31 and a second filament 32, which are spirally wound together. The fiber fineness of the first filament 31 and the second filament 32 is 140D. The third nylon high-elastic yarn 5 includes a third filament 51, a fourth filament 52, a fifth filament 53, and a sixth filament 54, which are spirally wound together. The fiber fineness of the third filament 51, the fourth filament 52, the fifth filament 53, and the sixth filament 54 is 140D. The fiber fineness of the TPU composite yarn 1 is 900D. The fiber fineness of the UTPEE yarn 2 is 144D. The fiber fineness of the TPU yarn 6 is 350D.

[0040] 3) Pre-setting process: The pre-setting process uses high-temperature hot air in the setting machine. The pre-setting temperature is set at 170℃, and the feed speed of the fabric is set at 15 yards / min. The hot air is evenly applied to both sides of the fabric, so that the core layer of the TPU composite yarn does not melt, while the outer layer is fully melted. When the temperature inside the closed oven of the setting machine is higher than the glass transition temperature of the fabric, the polymer inside the fiber raw material is reorganized, thereby changing the surface dimensions of the fabric. Specifically, the pre-setting machine uses the EAG-2000-CBR-0 Taiwan Ligen setting machine. The fabric is fed into the setting machine along the weaving direction. First, the fabric is stretched or contracted to the setting dimensions by the overfeed roller device and the pin chain stretching device. After passing through multiple dry and hot sealed oven devices for setting treatment, the set fabric is cooled to complete the pre-setting process.

[0041] 4) Flat-width washing:

[0042] The greige fabric undergoes both flat-width washing and auxiliary modification treatment. Refining agents and degreasing agents are used to remove impurities, stains, and oil from the fabric surface. Chelating dispersing agents are used to prevent the formation of metal ion precipitates that could affect the fabric color and to improve the washing effect. The flat-width washing speed is 12-15 yards / min. Specific dye and auxiliary agent formulations are as follows:

[0043]

[0044] First, a refining agent is added at 60°C in box one. The temperature in box two is raised to 80°C, and an oil remover and chelating agent are added to remove impurities. After being boiled in boxes three and four, the temperature in box five is lowered to 60°C for cleaning. Then, the temperature in box six is ​​lowered to room temperature for squeezing and drying. Finally, the fabric is produced.

[0045] 5) Tensioning and setting: The tenter frame uses high-temperature hot air for tensioning and setting. The temperature of the tenter frame is set not higher than 160℃ to prevent the skin layer 12 of the TPU composite yarn 1 from melting again. The speed of the input fabric is set at 12 yards / min.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0047] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0048] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0049] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. A method of making a warp-knitted, jacquard, tricot mesh face fabric, characterized by: The method comprises the following steps: 1) raw material selection: first warp: TPU composite yarn; second warp: UTPEE yarn; first weft: first cotton high elastic yarn; second weft: second cotton high elastic yarn; third weft: third cotton high elastic yarn; fourth weft: TPU yarn; the TPU composite yarn comprises a core layer and a skin layer wrapped outside the core layer, the melting point of the core layer is not less than 190℃, and the melting point of the skin layer is not greater than 170℃; 2) weaving process: the shuttle loom weaves the TPU composite yarn, the UTPEE yarn, the first cotton high elastic yarn, the second cotton high elastic yarn, the third cotton high elastic yarn and the TPU yarn into a one-in-six form by the method of shuttle weaving to form a gray cloth, so that one inlay group on the gray cloth has one TPU composite yarn as inlay warp and six UTPEE yarns as ground warp, and one TPU yarn is distributed on one inlay group; then, yarn organization twisting is performed once; after the first cotton high elastic yarn, the second cotton high elastic yarn and the third cotton high elastic yarn are woven into the next row, one rib organization twisting is performed simultaneously, and then yarn organization twisting is performed, thereby forming a diamond or hexagonal mesh; 3) pre-setting process: the pre-setting is performed by a setting machine using high-temperature hot air, the pre-setting temperature is set to 170℃, the input speed of the gray cloth is set to 15 yards / min, the hot air uniformly acts on the front and back surfaces of the gray cloth, the core layer of the TPU composite yarn is not melted, and the skin layer is fully melted, when the temperature in the closed oven of the setting machine is higher than the glass transition temperature of the gray cloth, the high molecules in the fiber raw material are reorganized, so that the surface size of the fabric is changed; 4) flat washing; 5) tenter setting: the tenter setting is performed by a setting machine using high-temperature hot air, the tenter setting temperature is set to not higher than 160℃ to prevent the skin layer of the TPU composite yarn from being melted again, and the input speed of the gray cloth is set to 12 yards / min.

2. A method of making a warp-like, tricot jacquard mesh face fabric according to claim 1, characterized in that: The warp density of the grey cloth is 51 threads / cm, the density of the grey cloth is 18 heddles / cm, and the weight of the grey cloth is 396 g / m 2 .

3. A method of making a warp-like, tricot jacquard mesh face fabric according to claim 2, characterized in that: The first cotton high elastic yarn comprises a first silk thread and a second silk thread, the first silk thread and the second silk thread are spirally twisted and connected, and the fiber fineness of the first silk thread and the second silk thread is 140D.

4. A method of making a warp-like, tricot jacquard mesh face fabric according to claim 2 or 3, characterized in that: The third cotton high elastic yarn comprises a third silk thread, a fourth silk thread, a fifth silk thread and a sixth silk thread, the third silk thread, the fourth silk thread, the fifth silk thread and the sixth silk thread are spirally twisted and connected, and the fiber fineness of the third silk thread, the fourth silk thread, the fifth silk thread and the sixth silk thread is 140D.

5. A method of making a mock warp-knitted, jacquard, tricot mesh face fabric according to claim 4, characterized in that: The fiber fineness of the second cotton high elastic yarn is 140D.

6. The method of making a mock warp-knitted, jacquard, tricot mesh face fabric of claim 2, wherein: The fiber fineness of the TPU composite yarn is 900D.

7. The method of making a mock warp-knitted, jacquard, tricot mesh face fabric of claim 2, wherein: The fiber fineness of the UTPEE yarn is 144D.

8. The method of making a mock warp-knitted, jacquard, tricot mesh face fabric of claim 2, wherein: The fiber fineness of the TPU yarn is 350D.

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