A method for weaving warp-knitted tape with a 4D effect

Abstract

This invention relates to the field of warp-knitted fabric processing technology, specifically a method for weaving a warp-knitted tape with a 4D effect. The tape is woven using a double-needle bed Jacquard warp knitting machine and includes: a plain weave structure and a jacquard structure interconnected in the horizontal direction. The plain weave structure comprises: a front and back plain weave piece of the same shape, symmetrically layered, connected by high-elastic yarn. The jacquard structure comprises: a layered jacquard front and back jacquard piece, connected by low-elastic yarn. The yarns on the first and second half-size Jacquard guide bars are high-elastic yarns, while the yarns on the third and fourth half-size Jacquard guide bars are low-elastic yarns. This invention helps solve the problems of existing knitted tapes requiring specific molds for pressing, resulting in high costs, high defect rates, and demanding operational requirements.

Description

Technical Field

[0001] This invention relates to the field of warp-knitted fabric processing technology, and in particular to a method for weaving warp-knitted tape with a 4D effect. Background Technology

[0002] Warp-knitted tapes are narrow or tubular fabrics typically made from yarns of different types, colors, and thicknesses. They have a wide range of applications, primarily in clothing, bags, footwear, automotive, and industrial fields. While some weaving machines on the market produce tapes with prominent patterns, these fabrics are less stable than warp-knitted tapes and are prone to unraveling. To achieve different pattern prominences on a flat surface, warp-knitted tapes are usually heat-pressed at high temperatures using a mold. This results in a more three-dimensional and aesthetically pleasing pattern after heat pressing, often referred to in the industry as 4D effect tapes. However, this method generally involves identical yarn material in both the plain and jacquard areas. After weaving, molds need to be created based on various sizes and pattern designs to achieve different deformations in different areas, thus creating the desired prominent pattern. This leads to higher production costs, difficulty in correcting errors during heat pressing, a higher defect rate, and requires more precise heat pressing operations with a low tolerance for error. Summary of the Invention

[0003] The main objective of this invention is to provide a weaving method for warp-knitted tape with a 4D effect, which helps to solve the problems of existing knitted tapes requiring specific molds for pressing, resulting in high costs, high defect rates, and high operational requirements.

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

[0005] A method for weaving a warp-knitted tape with a 4D effect, the warp-knitted tape being woven by a double-needle bed Jacquard warp knitting machine, comprising: a plain weave and a jacquard weave interconnected in the horizontal direction, wherein the front needle bed of the double-needle bed Jacquard warp knitting machine comprises: a first ground guide bar (GB1), a second ground guide bar (GB2), a first half-machine Jacquard guide bar (JB3), and a second half-machine Jacquard guide bar (JB4) arranged in sequence; the rear needle bed of the double-needle bed Jacquard warp knitting machine comprises: a third half-machine Jacquard guide bar (JB5), a fourth half-machine Jacquard guide bar (JB6), a third ground guide bar (GB7), and a fourth ground guide bar (GB8) arranged in sequence;

[0006] The plain weave structure includes: a front plain weave and a back plain weave of the same shape and symmetrically stacked, wherein the front plain weave is woven by the guide yarns on the front needle bed; the back plain weave is woven by the guide yarns on the back needle bed, and the front plain weave and the back plain weave are connected by the guide yarns of the first half-machine Jacquard guide (JB3) and the second half-machine Jacquard guide (JB4) to the back needle bed and are respectively looped;

[0007] The jacquard structure includes: a layered jacquard front piece and a jacquard back piece, wherein the jacquard front piece is woven from the guide yarns on the front needle bed; the jacquard back piece is woven from the guide yarns on the back needle bed, and the jacquard front piece and the jacquard back piece are connected by guide yarns to the front needle bed through the third half-size Jacquard guide (JB5) and the fourth half-size Jacquard guide (JB6), and by guide yarns to the back needle bed through the first half-size Jacquard guide (JB3) and the second half-size Jacquard guide (JB4), and are respectively looped together;

[0008] The yarns on the first half-size Jacquard comb (JB3) and the second half-size Jacquard comb (JB4) are high-elastic yarns, while the yarns on the third half-size Jacquard comb (JB5) and the fourth half-size Jacquard comb (JB6) are low-elastic yarns.

[0009] The beneficial effects of this invention are: it utilizes warp knitting to achieve a 4D effect knitted tape, enabling plain weave and jacquard weaves to be woven on the same horizontal plane, and employs a double-needle bed warp knitting machine with two and a half jacquard guide bars and two ground guide bars on each side. The pattern can be designed by computer according to requirements, and the operation is simple, convenient and efficient. When using jacquard on side A for plain weave, it connects planes A and B; when using jacquard, it is woven on side B. Similarly, when using jacquard on side B for plain weave, it is woven on side B; when using jacquard, it connects planes A and B. Side A jacquard needles JB3 and JB4 use elastic yarn, while side B jacquard needles JB5 and JB6 use low-elastic yarn. Utilizing the difference in elasticity between the two, by using two materials with different elasticities on the same horizontal plane, the high-elasticity yarn connects the front and back pieces of the plain weave, while the low-elasticity yarn connects the two sides of the jacquard weave. After weaving into loops, the two yarns shrink to different degrees. The high-elasticity yarn in the plain weave area shrinks significantly, making the plain weave structure tighter, while the low-elasticity yarn in the jacquard weave area shows almost no shrinkage, thus obtaining a prominent 4D pattern. This method allows the pattern to be freely modified by computer, eliminating the time and waste associated with changing molds, and improving yield and production efficiency.

[0010] Based on the above technical solutions, in plain weave fabric:

[0011] The yarn padding process of the first ground comb (GB1) is: 0-0-0-0 / 3-3-3-3 / / ,

[0012] The yarn padding process for the second comb bar (GB2) is: 1-0-0-0 / 0-1-1-1 / / .

[0013] The yarn padding process for the third-location comb (GB7) is: 1-1-1-0 / 0-0-0-1 / / ,

[0014] The yarn padding process for the fourth comb bar (GB8) is: 0-0-3-3 / 3-3-0-0 / / .

[0015] The yarn padding process for the first half-machine Jacquard comb (JB3) is: 1-0-1—0 / 1-0-1—0 / / .

[0016] The yarn padding process for the second half-machine Jacquard comb (JB4) is: 1-0-1-0 / 1-0-1-0 / / .

[0017] The yarn padding process for the third half-machine Jacquard comb (JB5) is: 1-1-0-1 / 1-1-0-1 / / .

[0018] The yarn padding process for the fourth and a half Jacquard comb (JB6) is: 1-1-0-1 / 1-1-0-1 / / .

[0019] The numbers 0, 1, 2, and 3 represent the gap numbers between adjacent needles.

[0020] The plain weave fabric is formed by the GB1 woven weft weave and the GB2 woven chain weave to form the front piece of the plain weave fabric, and the GB7 woven chain weave and the GB8 woven weft weave to form the back piece of the plain weave fabric.

[0021] Based on the above technical solutions, in jacquard weave:

[0022] The yarn padding process of the first ground comb (GB1) is: 0-0-0-0 / 3-3-3-3 / / ,

[0023] The yarn padding process for the second comb bar (GB2) is: 1-0-0-0 / 0-1—1—1 / / ,

[0024] The yarn padding process for the third-location comb (GB7) is: 1-1-1-0 / 0-0-0-1 / / ,

[0025] The yarn padding process for the fourth comb bar (GB8) is: 0-0-3-3 / 3-3-0-0 / / .

[0026] The yarn padding process for the first half-machine Jacquard comb (JB3) is: 0-0-1-0 / 0-0-1—0 / / .

[0027] The yarn padding process for the second half-machine Jacquard comb (JB4) is: 0-0-1-0 / 0-0-1-0 / / .

[0028] The yarn padding process for the third half-machine Jacquard comb (JB5) is: 1-0-0-1 / 0-1-0-1 / / .

[0029] The yarn padding process for the fourth and a half Jacquard comb (JB6) is: 1-0-0-1 / 0-1-0-1 / / .

[0030] The numbers 0, 1, 2, and 3 represent the gap numbers between adjacent needles.

[0031] The jacquard weave is made by the pre-set jacquard padding process of JB3, JB4, JB5 and JB6.

[0032] Based on the above technical solution, the movement trajectory of the padding yarn in both the plain weave and jacquard weave is controlled by computer.

[0033] Based on the above technical solution, the yarns on the first half-size Jacquard comb (JB3) and the second half-size Jacquard comb (JB4) are made of spandex or covered yarn. Attached Figure Description

[0034] Figure 1 This is a cross-sectional view of the needle bed and guide bar of a double needle bed warp knitting machine in one embodiment;

[0035] Figure 2 This is a simplified structural side view of a double-needle bed warp knitting machine and yarn frame in one embodiment;

[0036] Figure 3 This is a real-life example of how the pattern on a warp-knitted tape is highlighted.

[0037] Figure 4 This is a diagram showing the yarn padding movement of a ground comb on the front needle bed in one embodiment;

[0038] Figure 5 This is a diagram showing the yarn padding movement of another comb on the front needle bed in one embodiment;

[0039] Figure 6 This is a diagram showing the yarn padding movement of a ground comb on the back needle bed in one embodiment;

[0040] Figure 7 This is a diagram showing the yarn padding movement of another comb on the rear needle bed in one embodiment;

[0041] Figure 11 for Figure 6 , Figure 7 The corresponding plain weave fabric weaving process shows the yarn padding movement of two and a half machine sizes of Jacquard combs;

[0042] Figure 9 for Figure 4 , Figure 5 , Figure 6 , Figure 7 The corresponding jacquard weaving process shows the yarn movement of the two and a half machine sizes of Jacquard combs.

[0043] Figure 10 for Figure 4 , Figure 5 , Figure 6 , Figure 7 The corresponding plain weave fabric weaving process shows the yarn padding movement of two and a half machine sizes of Jacquard combs;

[0044] Figure 8 for Figure 6 , Figure 7 The corresponding jacquard weaving process shows the yarn movement of the two half-machine size Jacquard combs. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the present invention clearer, a detailed description is provided below in conjunction with the accompanying drawings and specific embodiments. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0046] Example 1: A method for weaving a warp-knitted tape with a 4D effect, the jacquard knitted tape (such as...) Figure 3 (As shown) is obtained by warp knitting using a double needle bed warp knitting machine, including: front and back plain fabric pieces in the vertical and horizontal directions, and a double-knitted chain jacquard connecting the two plain fabric pieces.

[0047] Furthermore, during the knitting of a pattern, the jacquard performs a back needle bed yarn movement in the plain fabric position, and in the jacquard position, the jacquard performs both front needle bed and back needle bed yarn movements respectively.

[0048] Jacquard weaving that achieves a 4D effect using warp knitting retains the advantages of traditional coils, such as breathability and resilience, while avoiding the hassles of post-processing heat pressing.

[0049] Furthermore, in order to ensure that the differences in the conveying speed of each yarn can be coordinated and stabilized, a yarn rack is set on one side of the double needle bed knitting machine to independently deliver yarn for specific guide paths.

[0050] Example 2, based on Example 1, such as Figure 1As shown, the front needle bed of the double-needle bed Jacquard warp knitting machine includes: a first ground guide bar GB1, a second ground guide bar GB2, a first half-machine number Jacquard guide bar JB3, and a second half-machine number Jacquard guide bar JB4 arranged in sequence; the rear needle bed of the double-needle bed Jacquard warp knitting machine includes: a third half-machine number Jacquard guide bar JB5, a fourth half-machine number Jacquard guide bar JB6, a third ground guide bar GB7, and a fourth ground guide bar GB8 arranged in sequence.

[0051] Using a double-needle bed warp knitting machine with two ground combs and two half-size jacquard combs on each side simplifies the weaving process of jacquard braided tapes and improves production efficiency.

[0052] Example 3, based on Examples 1 and 2, the plain weave structure includes: a front plain weave piece and a back plain weave piece that are symmetrically stacked with the same shape, wherein the front plain weave piece is woven by the guide yarns on the front needle bed; the back plain weave piece is woven by the guide yarns on the back needle bed, and the front plain weave piece and the back plain weave piece are connected to the back needle bed by the guide yarns of the first half-machine size Jacquard guide JB3 and the second half-machine size Jacquard guide JB4, and are respectively looped.

[0053] The jacquard weave comprises: a layered jacquard front piece and a jacquard back piece, wherein the jacquard front piece is woven from yarns guided by the first ground guide bar GB1, the second ground guide bar GB2, the first half-size Jacquard guide bar JB3, and the second half-size Jacquard guide bar JB4. The jacquard back piece is woven from yarns guided by the third half-size Jacquard guide bar JB5, the fourth half-size Jacquard guide bar JB6, the third ground guide bar GB7, and the fourth ground guide bar GB8.

[0054] It should be noted that the jacquard front piece and the jacquard back piece are connected by the third half-machine number Jacquard comb JB5 and the fourth half-machine number Jacquard comb JB6 guiding the yarn to the front needle bed, and the first half-machine number Jacquard comb JB3 and the second half-machine number Jacquard comb JB4 guiding the yarn to the back needle bed, and are connected by forming loops respectively.

[0055] Furthermore, the connecting parts of the jacquard weave are made of low-elasticity yarn (such as low-elasticity polyester or nylon), while the connecting parts of the plain weave are made of high-elasticity yarn (such as spandex or covering yarn). Figure 3 As shown, the jacquard weave is a raised section, while the plain weave is a flat base fabric structure.

[0056] 4D floral effects are achieved by using different elastic materials and weaving techniques. The process is simple and can be completed in one step.

[0057] Example 4: Based on the above examples, the plain weave structure is made by using the first ground guide bar GB1 and the fourth ground guide bar GB8 as the weft weft weave, and the second ground guide bar GB2 and the third ground guide bar GB7 as the chain weave. The jacquard structure is formed by a pre-set jacquard padding process using the first half-machine number Jacquard guide bar JB3, the second half-machine number Jacquard guide bar JB4, the third half-machine number Jacquard guide bar JB5, and the fourth half-machine number Jacquard guide bar JB6.

[0058] For example: In a plain weave fabric: the padding process of the first ground comb GB1 is: 0-0-0-0 / 3-3-3-3 / / (e.g. Figure 4 As shown), the yarn padding process for the second guide bar GB2 is: 1-0-0-0 / 0-1-1-1 / / (as shown) Figure 5 As shown), the yarn padding process for the third comb bar GB7 is: 1-1-1-0 / 0-0-0-1 / / (as shown) Figure 6 As shown), the yarn padding process for the fourth guide bar GB8 is: 0-0-3-3 / 3-3-0-0 / / (as shown) Figure 7 As shown), the yarn padding process for the first half-machine number Jacquard comb JB3 is: 1-0-1-0 / 1-0-1-0 / / (as shown) Figure 10 As shown), the yarn padding process for the second half of the Jacquard comb JB4 is: 1-0-1-0 / 1-0-1-0 / / (as shown). Figure 10 As shown), the yarn padding process for the third half-machine Jacquard comb JB5 is: 1-1-0-1 / 1-1-0-1 / / (as shown) Figure 11 As shown), the yarn padding process for the fourth half-machine number Jacquard comb JB6 is: 1-1-0-1 / 1-1-0-1 / / (as shown) Figure 11 (As shown).

[0059] In the jacquard weave: the yarn padding process of the first ground comb GB1 is: 0-0-0-0 / 3-3-3-3 / / (e.g.) Figure 4 As shown), the yarn padding process for the second comb bar GB2 is: 1-0-0-0 / 0—1—1-1 / / (as shown) Figure 5 As shown), the yarn padding process of the third comb bar GB7 is: 1-1—1—0 / 0-0-0-1 / / (as shown) Figure 6 As shown), the yarn padding process for the fourth comb bar GB8 is: 0-0-3-3 / 3-3-0-0 / / (as shown) Figure 7 As shown), the yarn padding process for the first half-machine number Jacquard comb JB3 is: 0-0-1-0 / 0-0-1-0 / / (as shown). Figure 8 As shown), the yarn padding process for the second half of the Jacquard comb JB4 is: 0-0-1-0 / 0-0-1-0 / / (as shown). Figure 8As shown), the yarn padding process for the third half-machine number Jacquard comb JB5 is: 1-0-0-1 / 0-1-0-1 / / (as shown) Figure 9 As shown), the yarn padding process for the fourth half-machine Jacquard comb JB6 is: 1-0-0-1 / 0-1-0-1 / / (as shown). Figure 9 (As shown).

[0060] In the diagram, F represents the front needle bed, B represents the rear needle bed, and the numbers 0, 1, 2, and 3 represent the gap numbers between adjacent needles.

[0061] This method has a simple weaving process and high weaving efficiency.

[0062] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. 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. Such 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 warp-knitted tape with a 4D effect, characterized in that, This warp-knitted tape is woven by a double-needle bed Jacquard warp knitting machine and includes: a plain weave and a jacquard weave connected in the horizontal direction. The front needle bed of the double-needle bed Jacquard warp knitting machine includes: a first ground guide bar (GB1), a second ground guide bar (GB2), a first half-machine Jacquard guide bar (JB3), and a second half-machine Jacquard guide bar (JB4) arranged in sequence. The rear needle bed of the double-needle bed Jacquard warp knitting machine includes: a third half-machine Jacquard guide bar (JB5), a fourth half-machine Jacquard guide bar (JB6), a third ground guide bar (GB7), and a fourth ground guide bar (GB8) arranged in sequence. The plain weave structure includes: a front plain weave piece and a back plain weave piece that are symmetrically stacked and have the same shape. The front plain weave piece is woven by the guide yarns on the front needle bed; the back plain weave piece is woven by the guide yarns on the back needle bed. The front plain weave piece and the back plain weave piece are connected to the back needle bed by the guide yarns of the first half-machine size Jacquard guide (JB3) and the second half-machine size Jacquard guide (JB4) and are connected by loops respectively. The jacquard structure includes: a layered jacquard front piece and a jacquard back piece, wherein the jacquard front piece is woven from the guide yarns on the front needle bed; the jacquard back piece is woven from the guide yarns on the back needle bed, and the jacquard front piece and the jacquard back piece are connected by the guide yarns to the front needle bed through the third half-size Jacquard guide yarn (JB5) and the fourth half-size Jacquard guide yarn (JB6), and the guide yarns to the back needle bed through the first half-size Jacquard guide yarn (JB3) and the second half-size Jacquard guide yarn (JB4), and are respectively looped together; The yarns on the first half-machine Jacquard comb (JB3) and the second half-machine Jacquard comb (JB4) are high-elastic yarns, while the yarns on the third half-machine Jacquard comb (JB5) and the fourth half-machine Jacquard comb (JB6) are low-elastic yarns. The yarn padding process of the first ground comb (GB1) is: 0-0-0-0 / 3-3-3-3 / / , The yarn padding process for the second comb bar (GB2) is: 1-0-0-0 / 0-1-1-1 / / , The yarn padding process for the third-location comb (GB7) is: 1-1-1-0 / 0-0-0-1 / / , The yarn padding process for the fourth comb bar (GB8) is: 0-0-3-3 / 3-3-0-0 / / . The yarn padding process for the first half-machine Jacquard comb (JB3) is: 1-0-1-0 / 1-0-1-0 / / . The yarn padding process for the second half-machine Jacquard comb (JB4) is: 1-0-1-0 / 1-0-1-0 / / , The yarn padding process for the third half-machine Jacquard comb (JB5) is: 1-1-0-1 / 1-1-0-1 / / . The yarn padding process for the fourth and a half Jacquard comb (JB6) is: 1-1-0-1 / 1-1-0-1 / / . The numbers 0, 1, 2, and 3 represent the gap numbers between adjacent needles, respectively. The yarn padding process of the first ground comb (GB1) is: 0-0-0-0 / 3-3-3-3 / / , The yarn padding process for the second comb bar (GB2) is: 1-0-0-0 / 0-1-1-1 / / , The yarn padding process for the third-location comb (GB7) is: 1-1-1-0 / 0-0-0-1 / / , The yarn padding process for the fourth comb bar (GB8) is: 0-0-3-3 / 3-3-0-0 / / . The yarn padding process for the first half-machine Jacquard comb (JB3) is: 0-0-1-0 / 0-0-1-0 / / . The yarn padding process for the second half-machine Jacquard comb (JB4) is: 0-0-1-0 / 0-0-1-0 / / , The yarn padding process for the third half-machine Jacquard comb (JB5) is: 1-0-0-1 / 0-1-0-1 / / . The yarn padding process for the fourth and a half Jacquard comb (JB6) is: 1-0-0-1 / 0-1-0-1 / / . The numbers 0, 1, 2, and 3 represent the gap numbers between adjacent needles.

2. The weaving method of a warp-knitted tape with a 4D effect according to claim 1, characterized in that, The movement trajectory of the padding yarn in both the plain weave and jacquard weave structures is controlled by computer.

3. The weaving method of a warp-knitted tape with a 4D effect according to claim 1, characterized in that, The yarns on the first half-size Jacquard comb (JB3) and the second half-size Jacquard comb (JB4) are made of spandex or covered yarn.

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