A water-repellent superconducting wet warp knitted mesh fabric imitating weft-knitted pineapple tissue and a preparation method thereof

Abstract

The present application is about a water-repellent superconducting wet warp knitted mesh fabric imitating a weft-knitted pineapple tissue and its preparation method, and relates to the field of warp knitted fabrics. The method comprises: selecting polypropylene as a raw material, warping the polypropylene to a disk for standby use; using a warp knitting machine to start weaving, and passing the polypropylene on the disk after warping through a yarn guide rod, a yarn dividing reed and a tension rod in turn to the yarn guide needles of combing bars GB1 and GB2, and both combing bars GB1 and GB2 are penetrated with polypropylene; importing the weaving process parameters into a control system, and the knitting needles, sinkers and knock-off plates on the needle bed cooperate to perform needle front and needle back padding, weaving into loops, and obtaining a preliminary formed fabric; post-processing the preliminary formed fabric, and the post-processing comprises pre-forming, dyeing, drying, water-repellent treatment, shaping and cooling the preliminary formed fabric in turn. The problem of low production efficiency, poor fabric structure stability and inability to achieve water repellency of existing weft-knitted pineapple tissue fabrics is solved.

Description

Technical Field

[0001] The present application relates to the technical field of warp knitted fabrics, and in particular to a water-repellent superconducting wet warp knitted mesh fabric imitating weft-knitted pineapple tissue and a preparation method thereof. Background Art

[0002] With the progress of economic development, people's expectations for fabrics have gradually changed from simple wearability to wearing comfort and functional diversity. Especially for sportswear fabrics, people not only expect them to be comfortable to wear, but also hope that they can have good moisture absorption and perspiration function, and also hope that they have a small weight to make them light to wear. The requirements for warp knitting are not only satisfied with a single fabric property, but also expect it to retain its comfort while having the pattern of weft knitting fabrics and having high functionality in some aspects.

[0003] Among weft-knitted fabrics, pineapple-weave fabrics generally have good air permeability, and the transfer loop structure can form effects such as holes, bumps, and longitudinal twists. If these structures are distributed on the surface of the knitted fabric according to a certain pattern, the desired pattern can be formed, and therefore it is deeply loved by people.

[0004] However, the pineapple weave fabric in the prior art has low production, is not easy to form a large mesh and is easy to break, which is not conducive to its large-scale application; and the weft knitted fabric is easy to fall apart and has poor dimensional stability. Figure 4 The technique of turning the circle upward to form the pineapple tissue is difficult and requires a specific machine. In the figure, a, shifting one needle upward can form a small mesh; b, shifting two needles upward can form a larger mesh.

[0005] Warp knitted fabrics are formed by coils being interlaced along the weft direction, and have good ductility and dimensional stability. Various styles of fabrics can be obtained by configuring the raw materials and arranging and combining the coils of different structures. Therefore, it is urgently needed to design a water-repellent superconducting wet warp knitted mesh fabric imitating a weft knitted pineapple tissue to overcome the defects of the existing weft knitted pineapple tissue fabrics, such as low production efficiency, poor fabric structure stability, and failure to achieve water repellency. Summary of the invention

[0006] The purpose of the present application is to provide a water-repellent superconducting wet warp knitted mesh fabric imitating a weft-knitted pineapple tissue and a preparation method thereof, so as to solve the problems of low production efficiency, poor fabric structure stability and inability to achieve water repellency of existing weft-knitted pineapple tissue fabrics.

[0007] To achieve the above purpose, the technical solution adopted in this application is:

[0008] On the one hand, the present application provides a method for preparing a water-repellent superconducting wet warp knitted mesh fabric imitating weft-knitted pineapple tissue, the method adopts a warp knitting machine for preparation, the warp knitting machine includes a comb GB1 and a comb GB2, the method includes:

[0009] S1. Select polypropylene as the raw material, warp the polypropylene to the beam head for later use;

[0010] S2, using the warp knitting machine to start weaving, the polypropylene on the warp head after warping is sequentially led to the yarn guide needles of the combing bar GB1 and the combing bar GB2 through the yarn guide rod, the yarn dividing reed and the tension rod, and the combing bar GB1 and the combing bar GB2 are both penetrated with the polypropylene; the knitting process parameters are introduced into the control system, and the knitting needles, the sinker and the knock-off plate on the needle bed cooperate to perform the needle front and needle back padding, weaving into loops, and obtaining a preliminary formed fabric;

[0011] S3, post-processing the preliminary formed fabric, wherein the post-processing comprises sequentially pre-forming, dyeing, drying, water-repellent treatment, shaping and cooling the preliminary formed fabric to obtain the imitation weft-knitted pineapple tissue water-repellent superconducting wet warp knitted mesh fabric.

[0012] In a possible implementation, in step S3, the pre-forming, dyeing, drying, water-repellent treatment, shaping and cooling of the preliminary formed fabric are sequentially performed to obtain the water-repellent superconducting wet warp knitted mesh fabric imitating weft-knitted pineapple tissue, including:

[0013] Pre-forming, using a setting machine to pre-form the preliminary formed fabric, the pre-forming temperature is 190-200° C., and the pre-forming speed is 10-20 m / min;

[0014] Dyeing, placing the pre-formed fabric into a water bath containing dyes and coloring aids for dyeing;

[0015] Drying: drying the preliminarily formed fabric after dyeing in a drying machine at a drying temperature of 100 to 160° C.

[0016] Water-repellent treatment, spraying the dried preliminary formed fabric with a resin solution, then drying it again in a dryer at a temperature of 100 to 160° C., and then padding or spraying the preliminary formed fabric with a composite solution of a water-repellent agent and a bridging agent;

[0017] Shaping, using a drying machine to instantly shape the preliminarily formed fabric after the water-repellent treatment, with the shaping temperature being 100-160° C.;

[0018] Cooling, naturally cooling the preliminarily formed fabric after shaping to room temperature;

[0019] Finally, the water-repellent superconducting wet warp knitted mesh fabric imitating weft-knitted pineapple tissue is obtained.

[0020] In a possible implementation, in the step S1, the specification range of the polypropylene is 50D / 36F to 150D / 72F.

[0021] In a possible implementation, in step S1, the warping parameters include:

[0022] Comb GB1: 8×270A;

[0023] Comb GB2: 8×270A.

[0024] In a possible implementation, in step S2, the knitting process parameters include inlay yarn structure parameters, and the inlay yarn structure parameters include:

[0025] Comb GB1: 1-0 / 4-5 / 1-0 / 2-3 / / ;

[0026] Comb GB2:4-5 / 1-0 / 4-5 / 3-2 / / .

[0027] In a possible implementation, in step S2, the weaving process parameters further include warp drawing parameters, and the warp drawing parameters include:

[0028] Comb GB1: 2A, 2*;

[0029] Comb GB2: 1*, 2A, 1*.

[0030] In a possible implementation, in step S2, the weaving process parameters further include a warp let-off parameter, and the warp let-off parameter includes:

[0031] Comb GB1: 4×2819mm / rack;

[0032] Comb GB2: 4×2819mm / rack.

[0033] In a possible implementation, the warp knitting machine further includes a KFD tensioner, and the step S2 further includes:

[0034] The KFD tensioner is used to control the weaving tension during the weaving process of the warp knitting machine.

[0035] In a possible implementation, in the step S1, the specification of the polypropylene is 100D / 48F.

[0036] On the other hand, the present application provides a weft-knitted pineapple-like water-repellent superconducting wet warp knitted mesh fabric, which is prepared according to any of the above-mentioned methods for preparing the weft-knitted pineapple-like water-repellent superconducting wet warp knitted mesh fabric, and the finished product of the weft-knitted pineapple-like water-repellent superconducting wet warp knitted mesh fabric has a grammage per square meter of 60 to 150 g / m2 .

[0037] The beneficial effects of the technical solution provided by this application include at least:

[0038] In terms of raw material selection, polypropylene fiber is the lightest, anti-microbial, and inexpensive among all chemical fibers. Polypropylene has a strong wicking effect, and water vapor can be removed through the capillaries in the fiber. After being made into clothing, the clothing is more comfortable, especially ultra-fine polypropylene fiber. Due to the increased surface area, it can transfer sweat faster and keep the skin comfortable. In terms of structural design, when polypropylene is used as the raw material, it is combined with the two-through-two-empty warp circulation control of GB1: 1-0 / 4-5 / 1-0 / 2-3 / / , GB2: 4-5 / 1-0 / 4-5 / 3-2 / / , which can make the fabric present a cloth effect similar to the weft-knitted pineapple tissue, and can also achieve super-conductive moisture of the fabric;

[0039] During post-processing, the fabric is treated with water repellent and a polymer coating is added to the fabric to provide waterproof protection. When the fabric is applied to clothing, water vapor and smaller sweat droplets are generated when the human body starts to exercise, and these can be discharged through the fabric wicking effect. When the amount of exercise is large and the human body sweats a lot, the larger sweat droplets form water beads on the surface of the fabric and slide down instead of soaking into the fabric, preventing the fabric from becoming heavy due to excessive moisture. Smaller sweat droplets and water vapor can be discharged through wicking, avoiding the discomfort of clothes sticking to the skin and the sense of restriction in movement, allowing the wearer to enjoy comfort and optimized freedom of movement.

[0040] Therefore, the problems of low production efficiency, poor fabric structure stability and inability to achieve water repellency in the existing weft-knitted pineapple tissue fabric are solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings:

[0042] Figure 1 A schematic diagram of a process for preparing a water-repellent superconducting warp knitted mesh fabric imitating a weft-knitted pineapple tissue provided by an exemplary embodiment of the present application is shown;

[0043] Figure 2 A schematic diagram of warp knitting yarn movement of a method for preparing a water-repellent superconducting wet warp knitted mesh fabric imitating weft knitted pineapple tissue provided by an exemplary embodiment of the present application is shown;

[0044] Figure 3 A simulation schematic diagram of a water-repellent superconducting warp knitted mesh fabric imitating a weft-knitted pineapple structure provided by an exemplary embodiment of the present application is shown;

[0045] Figure 4 A schematic diagram of the loops of a weft-knitted pineapple structure in the prior art is shown. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0047] The present application is further described below in conjunction with the accompanying drawings and embodiments.

[0048] Figure 1 A schematic flow chart of a method for preparing a water-repellent superconducting wet warp knitted mesh fabric imitating weft-knitted pineapple tissue provided by an exemplary embodiment of the present application is shown. The method is prepared by a warp knitting machine, which includes a comb GB1 and a comb GB2. The warp knitting machine used in the embodiment of the present application is a Karl Mayer HKS2 warp knitting machine. The method includes:

[0049] Step S1, selecting polypropylene as the raw material, warping the polypropylene and placing it on a disk for later use.

[0050] In the embodiment of the present application, the specification range of the selected polypropylene is 50D / 36F to 150D / 72F. In one example, the specification of the polypropylene is 50D / 36F. In another example, the specification of the polypropylene is 150D / 72F. In a preferred embodiment, the specification of the polypropylene is 100D / 48F.

[0051] In the embodiment of the present application, the parameters of polypropylene warping are implemented as follows:

[0052] Comb GB1: 8×270A; Comb GB2: 8×270A.

[0053] Step S2, weaving is started by using a warp knitting machine, the polypropylene on the warp head after warping is led to the yarn guide needles of the combing bars GB1 and GB2 through the yarn guide rod, the yarn dividing reed and the tension rod in turn, and the combing bars GB1 and GB2 are both penetrated with polypropylene; the knitting process parameters are introduced into the control system, and the knitting needles, the sinker and the knock-over plate on the needle bed cooperate to perform the needle front and needle back yarn padding (please refer to Figure 2 The warp knitting yarn is knitted into a circle to obtain a preliminary formed fabric.

[0054] In the embodiment of the present application, the weaving process parameters include inlay yarn structure parameters, warp drawing parameters and warp quantity parameters.

[0055] In a preferred embodiment, the yarn inlay structure parameters are implemented as:

[0056] Comb GB1: 1-0 / 4-5 / 1-0 / 2-3 / / ;

[0057] Comb GB2:4-5 / 1-0 / 4-5 / 3-2 / / .

[0058] In a preferred embodiment, the threading parameters are implemented as:

[0059] Comb GB1: 2A, 2*;

[0060] Comb GB2: 1*, 2A, 1*.

[0061] In a preferred embodiment, the warp let-off parameter is implemented as:

[0062] Comb GB1: 4×2819mm / rack;

[0063] Comb GB2: 4×2819mm / rack.

[0064] In an optional embodiment, the warp knitting machine further includes a KFD tensioner, and step S2 further includes:

[0065] KFD tensioner is used to control the weaving tension during the weaving process of warp knitting machine.

[0066] Among them, in the production process of imitation weft-knitted pineapple tissue water-repellent superconducting wet warp-knitted mesh fabric, it is necessary to prevent the fabric from twisting due to excessive tension, and to prevent the fabric from relaxing due to insufficient tension, so there are higher requirements for tension control.

[0067] Step S3, post-processing the preliminary formed fabric, the post-processing includes sequentially pre-forming, dyeing, drying, water-repellent treatment, shaping and cooling the preliminary formed fabric to obtain a water-repellent superconducting warp knitted mesh fabric imitating weft-knitted pineapple tissue (see Figure 3 2 shows a simulation diagram of the fabric).

[0068] In an optional embodiment, the pre-formed fabric is sequentially subjected to pre-forming, dyeing, drying, water-repellent treatment, shaping and cooling to obtain a water-repellent superconducting wet warp knitted mesh fabric imitating weft-knitted pineapple tissue, comprising:

[0069] A. Presetting, the preliminary formed fabric is pre-set with a setting machine, the pre-setting temperature is 190-200°C, and the pre-setting speed is 10-20 m / min. In one example, the pre-setting temperature is 190°C and the pre-setting speed is 10 m / min. In another example, the pre-setting temperature is 200°C and the pre-setting speed is 20 m / min. In a preferred embodiment, the pre-setting temperature is 195°C and the pre-setting speed is 16 m / min.

[0070] B dyeing, the pre-formed fabric is placed in a water bath containing dyes and coloring auxiliaries for dyeing.

[0071] C drying, the dyed preliminary formed fabric is dried in a drying machine, and the drying temperature is 100-160° C. In one example, the drying temperature is 100° C. In another example, the drying temperature is 160° C. In a preferred embodiment, the drying temperature is 130° C.

[0072] D. Water-repellent treatment: spray the dried preliminarily formed fabric with a resin solution, then dry it again in a dryer at a temperature of 100 to 160°C, and then dip or spray the preliminarily formed fabric with a mixed solution of a water-repellent agent and a bridging agent. In one example, the drying temperature is 100°C. In another example, the drying temperature is 160°C. In a preferred embodiment, the drying temperature is 130°C.

[0073] E. Setting: using a dryer to instantly set the preliminarily formed fabric after the water-repellent treatment, the setting temperature is 100-160° C. In one example, the setting temperature is 100° C. In another example, the setting temperature is 160° C. In a preferred embodiment, the setting temperature is 130° C.

[0074] F Cooling: Allow the initially formed fabric to cool naturally to room temperature after shaping.

[0075] G finally obtained the water-repellent superconducting wet warp knitted mesh fabric imitating weft-knitted pineapple tissue.

[0076] In summary, in the selection of raw materials, the present application uses polypropylene fiber, which is the lightest, anti-microbial, and inexpensive among all chemical fibers. Polypropylene has a strong wicking effect, and water vapor can be removed through the capillaries in the fiber. After being made into clothing, the clothing has good comfort, especially the ultra-fine polypropylene fiber. Due to the increased surface area, it can transfer sweat faster and keep the skin comfortable. In terms of structural design, when polypropylene is used as the raw material, it is combined with the two-through-two-empty warp circulation control of GB1: 1-0 / 4-5 / 1-0 / 2-3 / / , GB2: 4-5 / 1-0 / 4-5 / 3-2 / / , which can make the fabric present a cloth effect similar to the weft-knitted pineapple tissue, and can also achieve the ultra-fineness of the fabric. Moisture conduction: During post-treatment, the fabric is treated with a water-repellent treatment, and a polymer coating is added to the fabric to provide waterproof protection. When the fabric is applied to clothing, when the human body starts to exercise and produces water vapor and smaller sweat droplets, they can be discharged through the wicking effect of the fabric. When the amount of exercise is large and the human body sweats a lot, the larger sweat droplets form water droplets on the surface of the fabric and slide down instead of soaking into the fabric, preventing the fabric from becoming heavy due to excessive moisture. Smaller sweat droplets and water vapor can be discharged through wicking, avoiding the discomfort of clothes sticking to the skin and the sense of restriction in movement, allowing the wearer to enjoy comfort and optimized freedom of movement. Therefore, the problems of low production efficiency, poor fabric structure stability and inability to achieve water repellency in existing weft-knitted pineapple tissue fabrics are solved.

[0077] Figure 2 A simulation diagram of a water-repellent superconducting wet warp knitted mesh fabric of imitation weft-knitted pineapple tissue provided by an exemplary embodiment of the present application is shown. The fabric is prepared according to the preparation method of the water-repellent superconducting wet warp knitted mesh fabric of imitation weft-knitted pineapple tissue, and is characterized in that the finished product grammage per square meter of the water-repellent superconducting wet warp knitted mesh fabric of imitation weft-knitted pineapple tissue is 60-150g / m2.

[0078] In summary, on the one hand, the imitation weft-knitted pineapple tissue water-repellent superconducting wet warp-knitted mesh fabric provided by the present application has the effect of the imitation weft-knitted pineapple tissue fabric, and the preparation method is simple. On the other hand, the imitation weft-knitted pineapple tissue water-repellent superconducting wet warp-knitted mesh fabric provided by the present application has the effect of superconducting wet water-repellent: polypropylene itself has a strong wicking effect, and water vapor can be removed through the capillaries in the fiber, and secondly, the moisture conductivity is increased through the mesh structure. On the other hand, the imitation weft-knitted pineapple tissue water-repellent superconducting wet warp-knitted mesh fabric provided by the present application has obvious structural strength and dimensional stability: the warp-knitted structure is used for weaving, so that the fabric retains its original elasticity while improving the overall strength and dimensional stability. On the other hand, the imitation weft-knitted pineapple tissue water-repellent superconducting wet warp-knitted mesh fabric provided by the present application is comfortable to wear, has high output and low cost, and is suitable for application in sports products.

[0079] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A method for preparing a water-repellent superconducting wet warp knitted mesh fabric imitating weft-knitted pineapple tissue, characterized in that: The method is prepared by using a warp knitting machine, the warp knitting machine includes a comb bar GB1 and a comb bar GB2, and the method includes: S1. Select polypropylene as the raw material, warp the polypropylene to the beam head for later use; S2, using the warp knitting machine to start weaving, the polypropylene on the warp head after warping is sequentially led to the yarn guide needles of the combing bar GB1 and the combing bar GB2 through the yarn guide rod, the yarn dividing reed and the tension rod, and the combing bar GB1 and the combing bar GB2 are both penetrated with the polypropylene; the knitting process parameters are introduced into the control system, and the knitting needles, the sinker and the knock-off plate on the needle bed cooperate to perform the needle front and needle back padding, weaving into loops, and obtaining a preliminary formed fabric; S3, post-processing the preliminary formed fabric, wherein the post-processing includes sequentially pre-forming, dyeing, drying, water-repellent treatment, shaping and cooling the preliminary formed fabric to obtain the imitation weft-knitted pineapple tissue water-repellent superconducting wet warp knitted mesh fabric; In the step S2, the knitting process parameters include inlay yarn structure parameters, and the inlay yarn structure parameters include: comb GB1: 1-0 / 4-5 / 1-0 / 2-3 / / ; comb GB2: 4-5 / 1-0 / 4-5 / 3-2 / / ; In the step S3, the preliminary formed fabric is sequentially subjected to pre-forming, dyeing, drying, water-repellent treatment, shaping and cooling to obtain the imitation weft-knitted pineapple tissue water-repellent superconducting wet warp knitted mesh fabric, including: Pre-forming, using a setting machine to pre-form the preliminary formed fabric, the pre-forming temperature is 190-200° C., and the pre-forming speed is 10-20 m / min; Dyeing, placing the pre-formed fabric into a water bath containing dyes and coloring aids for dyeing; Drying: drying the preliminarily formed fabric after dyeing in a drying machine at a drying temperature of 100 to 160° C. Shaping, using a drying machine to instantly shape the preliminarily formed fabric after the water-repellent treatment, with the shaping temperature being 100-160°C; Cooling, naturally cooling the preliminarily formed fabric after shaping to room temperature; Finally, the imitation weft-knitted pineapple tissue water-repellent superconducting wet warp-knitted mesh fabric is obtained.

2. The method for preparing the water-repellent superconducting wet warp knitted mesh fabric imitating weft-knitted pineapple tissue according to claim 1, characterized in that: In the step S1, the specification range of the polypropylene is 50D / 36F to 150D / 72F.

3. The method for preparing the water-repellent superconducting wet warp knitted mesh fabric imitating weft-knitted pineapple tissue according to claim 1, characterized in that: In step S1, the warping parameters include: Comb GB1: 8×270A; Comb GB2: 8×270A.

4. The method for preparing the water-repellent superconducting wet warp knitted mesh fabric imitating weft-knitted pineapple tissue according to claim 1, characterized in that: In step S2, the knitting process parameters also include warp drawing parameters, and the warp drawing parameters include: Comb GB1: 2A, 2*; Comb GB2: 1*, 2A, 1*.

5. The method for preparing the water-repellent superconducting wet warp knitted mesh fabric imitating weft-knitted pineapple tissue according to claim 1, characterized in that: In step S2, the weaving process parameters also include a warp let-off parameter, and the warp let-off parameter includes: Comb GB1: 4×2819mm / rack; Comb GB2: 4×2819mm / rack.

6. The method for preparing the water-repellent superconducting wet warp knitted mesh fabric imitating weft-knitted pineapple tissue according to any one of claims 1 to 5, characterized in that: The warp knitting machine further includes a KFD tensioner, and the step S2 further includes: The KFD tensioner is used to control the weaving tension during the weaving process of the warp knitting machine.

7. The method for preparing the water-repellent superconducting wet warp knitted mesh fabric imitating weft-knitted pineapple tissue according to claim 2, characterized in that: In the step S1, the specification of the polypropylene is 100D / 48F.

8. A water-repellent superconducting wet warp knitted mesh fabric imitating weft-knitted pineapple tissue, the fabric is prepared according to the preparation method of the water-repellent superconducting wet warp knitted mesh fabric imitating weft-knitted pineapple tissue according to claim 1, characterized in that: The finished product weight per square meter of the imitation weft-knitted pineapple tissue water-repellent superconducting wet warp-knitted mesh fabric is 60-150 g / m 2 .

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