A cool-sensation jacquard knitted fabric and its weaving method

Abstract

The present invention provides a cool-sensation jacquard knitted fabric, which is characterized in that: a plurality of wicking structures are arranged in a matrix on the cool-sensation jacquard knitted fabric; the wicking structure has a dual-channel; one end outlet of the dual-channel is located on the front side of the cool-sensation jacquard knitted fabric, and the other end outlet is located on the reverse side of the cool-sensation jacquard knitted fabric. This cool-sensation jacquard knitted fabric is mainly applied to summer sports and leisure, solves the problem of stuffiness and airtightness of polyester, and improves the comfort of wearing.

Description

Technical Field

[0001] The present invention relates to the field of knitting, and specifically, to a cool-sensation jacquard knitted fabric and a weaving method thereof. Background Art

[0002] With the continuous improvement of consumers' health awareness, promoting physical and mental health and exploring high-tech products to echo the public mood have become essential topics. At the same time, consumers are also paying more and more attention to cost savings, waste reduction, and durable products that are reusable and recyclable will be more and more favored.

[0003] Bio-based fibers are typical applications. Bio-based fibers refer to fibers made from renewable organisms or biological extracts, which are different from fibers produced from non-renewable petrochemical resources such as coal and petroleum. According to the production process, bio-based fibers can be divided into bio-based virgin fibers and bio-based chemical fibers. Bio-based chemical fibers are fibers made from biomass as raw materials or polymers containing biomass-derived monomers, which include bio-based regenerated fibers and bio-based synthetic fibers.

[0004] The difference is that bio-based regenerated fibers do not change the original chemical structure of biomass macromolecules, and the spinning process is the reconstruction of their physical form; while the chemical and physical properties of bio-based synthetic fibers depend on the monomers used, and the original chemical structure of biomass macromolecules is completely changed.

[0005] With the continuous innovation and development of bio-based chemical fibers, bio-based raw materials have gradually changed from first-generation raw materials such as corn starch, sugarcane, and beets to second-generation corn straw, sugarcane bagasse, wood chips, rice straw, wheat straw, and tall forage, avoiding food resource conflicts and getting rid of the influence of crop production cycles. The bio-based content of the fibers can reach 100% from the current 30%-47%.

[0006] Bio-based polyamide PA56 (Tairon) is a polymer synthesized from bio-based pentamethylenediamine and petroleum-based adipic acid, with a bio-based content of over 40%. The production of bio-based PA56 can reduce the dependence on petroleum and carbon dioxide emissions, meeting the development trend of future new materials. Summary of the Invention

[0007] The present invention aims to use environmentally friendly materials and provide a cool-sensation jacquard knitted fabric by improving the weaving method. This cool-sensation jacquard knitted fabric is mainly applied to summer sports and leisure, solves the problem of polyester being stuffy and airtight, and improves the wearing comfort.

[0008] The jacquard fabric provided by the present invention is knitted by placing the yarn on some selected needles according to the pattern requirements to form loops. The knitting needles without the placement of new yarns do not form loops, and the yarns form floats and are located behind these knitting needles that do not participate in knitting. This jacquard knitted fabric has clear patterns, rich designs, thick texture, stable structure, small extensibility and run-off property, and a soft and elastic hand feeling, and is a good knitted outerwear fabric.

[0009] A cool-sensation jacquard knitted fabric provided by the present invention is characterized in that:

[0010] There are a plurality of wicking structures arranged in a matrix on the above-mentioned cool-sensation jacquard knitted fabric;

[0011] The above-mentioned wicking structure has a double channel;

[0012] One end outlet of the above-mentioned double channel is located on the front side of the cool-sensation jacquard knitted fabric, and the other end outlet is located on the back side of the cool-sensation jacquard knitted fabric.

[0013] Furthermore, a cool-sensation jacquard knitted fabric provided by the present invention is further characterized in that:

[0014] The above-mentioned wicking structure is a plurality of hole shapes arranged in a matrix on the cool-sensation jacquard knitted fabric;

[0015] The aperture size of the above-mentioned hole shape shown on the front side of the cool-sensation jacquard knitted fabric is smaller than the aperture size shown on the back side of the cool-sensation jacquard knitted fabric;

[0016] The middle part of the above-mentioned hole shape has a diaphragm.

[0017] Furthermore, a cool-sensation jacquard knitted fabric provided by the present invention is further characterized in that:

[0018] The above-mentioned cool-sensation jacquard knitted fabric is made of fibers containing bio-based polyamide.

[0019] Furthermore, a cool-sensation jacquard knitted fabric provided by the present invention is further characterized in that:

[0020] The above-mentioned cool-sensation jacquard knitted fabric is woven from three kinds of fibers.

[0021] Furthermore, a cool-sensation jacquard knitted fabric provided by the present invention is further characterized in that:

[0022] The above-mentioned cool-sensation jacquard knitted fabric is woven from bio-based polyamide, cool-sensation polyester yarn and spandex.

[0023] Furthermore, the present invention also provides a weaving method of a cool-sensation jacquard knitted fabric, which is characterized in that:

[0024] No. ①②③⑤⑥⑦⑨⑩ The fabric is a full-latch loop single jersey knitted in a flat surface;

[0025] The 4th and 8th courses form a jacquard breathable moisture-conducting groove-shaped cool feeling structure.

[0026] Furthermore, a method for weaving a cool feeling jacquard knitted fabric provided by the present invention is further characterized in that:

[0027] The above-mentioned 1st, 2nd, 3rd, 5th, 6th, 7th, 9th, and 10th courses are the first fiber and the second fiber;

[0028] The above-mentioned 4th and 8th are the third fiber.

[0029] Furthermore, a method for weaving a cool feeling jacquard knitted fabric provided by the present invention is further characterized in that:

[0030] The wire length ratio of the above-mentioned first fiber and second fiber to the third fiber is 1.2 - 1.8:1.

[0031] Furthermore, a method for weaving a cool feeling jacquard knitted fabric provided by the present invention is further characterized in that:

[0032] The yarn feeding ratio of the above-mentioned first fiber, second fiber, and third fiber is 9 - 9.6:0.6 - 0.85:1.

[0033] Furthermore, a method for weaving a cool feeling jacquard knitted fabric provided by the present invention is further characterized in that:

[0034] The above-mentioned first fiber, second fiber, and third fiber are selected from bio-based polyamide fiber, spandex fiber, and polyester. Description of the Drawings

[0035] Figure 1 ... The triangle diagram of the cool feeling jacquard knitted fabric provided by this embodiment;

[0036] Figure 2 ... The front view of the physical object of the cool feeling jacquard knitted fabric provided by this embodiment;

[0037] Figure 3 ... The back view of the physical object of the cool feeling jacquard knitted fabric provided by this embodiment; Detailed Description of the Invention

[0038] The jacquard structure in this embodiment is mainly completed through a circular knitting machine and yarn configuration, and through the knitting method as Figure 1 shown.

[0039] Among them, the 1st, 2nd, 3rd, 5th, 6th, 7th, 9th, and 10th courses are the first fiber and the second fiber;

[0040] The 4th and 8th is the third fiber.

[0041] The linear length ratio of the first fiber and the second fiber to the third fiber is 1.2 - 1.8:1.

[0042] The yarn feeding ratio of the first fiber, the second fiber, and the third fiber is 9 - 9.6:0.6 - 0.85:1.

[0043] One of the first fiber and the second fiber is a bio-based fiber.

[0044] Based on the above condition range, the optimal embodiments are as follows:

[0045] 1. Completed on a 34” 28G circular knitting machine:

[0046] 2. The yarn arrangement method is: ①②③⑤⑥⑦⑨⑩ is 100D / 68F bio-based polyamide PA56 DTY + 20D spandex, with a linear length of 14.5 cm / 50N

[0047] ④⑧ are both 50D / 36F cool-sensation polyester DTY, with a linear length of 9.1 cm / 50N

[0048] The yarn feeding ratio is 83.93% bio-based polyamide PA56 DTY, 7.14% spandex, and 8.93% cool-sensation polyester DTY. Through the weaving and dyeing and finishing processes, the required knitted fabric is obtained.

[0049] 3. The specific knitting method is as Figure 1 shown in the triangular knitting method:

[0050] The ①②③⑤⑥⑦⑨⑩ courses are all full-stitch single jersey to weave a flat surface;

[0051] The ④⑧ courses form a jacquard breathable and moisture-conducting groove-shaped cool-sensation structure.

[0052] Effect detection:

[0053] The maximum transient heat flow method is to simulate the transient heat flow change when the human skin contacts the fabric. A large maximum transient heat flow change indicates a strong contact cool-sensation of the fabric, and vice versa indicates a strong contact warm-sensation. The contact instantaneous sensation type can be characterized by testing the contact cool-sensation coefficient Qmax of the calculator. The larger the Qmax value, the stronger the cool-sensation felt by the skin. Currently, the standard formulated according to this method is the national standard GBT 35263-2017 "Testing and Evaluation of the Instantaneous Cool-Sensation Performance of Textiles in Contact". Generally, it is considered that the fabric with a maximum instantaneous heat flow value greater than 0.15 W / cm 2 has an obvious cool-sensation, and the fabric with a value less than 0.10 W / cm 2 has an obvious warm-sensation.

[0054] Adopt the national standard GBT 35263-2017 "Testing and Evaluation of the Instantaneous Cooling Sensation Performance of Textiles in Contact", and through the weaving and dyeing and finishing processes, obtain a fabric with a weight of 150 g / m 2 , after testing, Qmax is 0.26 W / cm 2 , and the cooling sensation of the fabric is relatively obvious.

[0055] The moisture absorption property was tested according to GB / T 21655.1-2008. After testing, the air permeability and moisture conductivity after washing are as follows: the water drop diffusion time < 1 s, the water absorption rate is 246%, the wicking height: 157 mm in the longitudinal direction and 148 mm in the transverse direction, the evaporation rate is 0.24 g / h, and the moisture permeability is 1.02*100 4 g / (m 2 24 h), indicating that the fabric has good air permeability and moisture conductivity.

[0056] Obviously, this fabric has good air permeability, does not stuffy sweat, has a good body feeling, and has an obvious cooling sensation, and is suitable for summer fabrics.

[0057] Comparative Example 1:

[0058] Replace the bio-based polyamide PA56 DTY in Example 1 with polyester yarn, and the others are the same as in Example 1.

[0059] Through the weaving and dyeing and finishing processes, obtain a fabric with a weight of 156 g / m 2 , after testing, Qmax is 0.19 W / cm 2 , and the fabric has a certain cooling effect; the air permeability and moisture conductivity after washing are as follows: the water drop diffusion time < 1 s, the water absorption rate is 157%, the wicking height: 135 mm in the longitudinal direction and 127 mm in the transverse direction, the evaporation rate is 0.19 g / h, and the moisture permeability

[0060] 9.2*100 3 g / (m 2 24 h), and the air permeability and moisture conductivity of the fabric are poor.

[0061] Comparative Example 2:

[0062] Use the same yarn as in Example 1, without using the jacquard process, and through the weaving and dyeing and finishing processes, obtain a fabric with a weight of 163 g / m 2 , after testing, Qmax is 0.17 W / cm 2 , and the fabric has a certain cooling effect; the air permeability and moisture conductivity after washing are as follows: the water drop diffusion time < 1 s, the water absorption rate is 153%, the wicking height: 137 mm in the longitudinal direction and 128 mm in the transverse direction, the evaporation rate is 0.18 g / h, and the moisture permeability is 9.6*100 3 g / (m 2 24 h), and the air permeability and moisture conductivity of the fabric are poor.

[0063] Comparative Example 3:

[0064] Replace the cool feeling polyester yarn in Example 1 with polyester yarn, and the others are the same as in Example 1.

[0065] Through the weaving and dyeing and finishing process, a fabric with a weight of 155 g / m is obtained. 2 , after testing, Qmax is 0.15 W / cm. 2 , the cool feeling effect of the fabric is not obvious; the air permeability and moisture conductivity after washing: the water drop diffusion time < 1 s, the water absorption rate is 205%, the wicking height: 146 mm in the warp direction, 139 mm in the weft direction, the evaporation rate is 0.20 g / h, and the moisture permeability is 1.00 * 100. 4 g / (m 2 24 h), indicating that the fabric has certain air permeability and moisture conductivity performance.

[0066] Functions and effects of this example:

[0067] This example uses bio-based polyamide PA56, cool feeling polyester yarn, and spandex as raw materials, and is a needle fabric with floating lines woven by jacquard weave. The fabric has a soft texture, is skin-friendly and does not stick to the skin, has good wrinkle resistance and air permeability, and has large extensibility and elasticity, improving the wearing comfort.

[0068] In this example, by changing the weaving method, three kinds of fibers are woven into a jacquard structure with air holes, which can make water evaporate quickly, improve the air permeability and wicking effect of the fabric, and enable the water vapor inside the fabric to be quickly conducted to the outside of the fabric.

[0069] In this example, the bio-based polyamide PA56 used can reduce the dependence on petroleum and carbon dioxide emissions, meeting the development trend of future new materials.

[0070] In this example, by combining the addition of cool feeling polyester yarn with a special weaving process, when the fabric comes into contact with the skin, it causes the rapid loss of heat on the skin surface, and the temperature drops immediately. After being reflected by the sensory nerve endings in the skin to the brain, a cool feeling is formed. It is especially suitable for wearing and using in hot summer. From the above comparative experiments, it can be found that the solution adopted in the present invention can further enhance the cool feeling, and it is not hot even after wearing for a long time, and a continuous sense of coolness can still be felt.

Claims

1. A cool-sensation jacquard knitted fabric, characterized in that: A plurality of wicking structures are arranged in a matrix on the cool-sensation jacquard knitted fabric; The wicking structure has a dual-channel; One end outlet of the dual-channel is located on the front side of the cool-sensation jacquard knitted fabric, and the other end outlet is located on the back side of the cool-sensation jacquard knitted fabric; The wicking structure is a plurality of hole shapes arranged in a matrix on the cool-sensation jacquard knitted fabric; The aperture size of the hole shape on the front side of the cool-sensation jacquard knitted fabric is smaller than the aperture size on the back side of the cool-sensation jacquard knitted fabric; A diaphragm is provided in the middle of the hole shape; The cool-sensation jacquard knitted fabric is woven from a first fiber, a second fiber and a third fiber; The first fiber is a bio-based polyamide; The second fiber is spandex; The third fiber is a cool-sensation polyester yarn; The specific weaving method is as follows: ①②③⑤⑥⑦⑨⑩ The 1st and 2nd tracks are the first fiber and the second fiber, and it is a full-knit single jersey fabric; the 4th and 8th tracks are for the third fiber to form a jacquard breathable moisture-conducting groove-shaped cooling structure.

2. The weaving method of a cool-sensation jacquard knitted fabric according to claim 1, characterized in that: The line length ratio of the first fiber, the second fiber to the third fiber is 1.2-1.8:

1.

3. The weaving method of a cool-sensation jacquard knitted fabric according to claim 1, characterized in that: The yarn feeding ratio of the first fiber, the second fiber to the third fiber is 9-9.6:0.6-0.85:1.

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