Active thermal regulation bionic blade fabric and its weaving method and application

Abstract

The present invention discloses a bionic leaf fabric with active thermal regulation, a knitting method, and applications thereof. The bionic leaf fabric is a double-layer fabric structure knitted by two yarn feeders on a fully fashioned four-needle-bed computerized flat knitting machine. The double-layer fabric structure has a porous structure. During knitting, one yarn feeder feeds the main yarn, while the other feeds the elastic auxiliary yarn. In the porous structure, the main yarn is shifted, and the auxiliary yarn is placed under the main yarn in the form of floating threads. The present invention utilizes the changes in the porosity of bionic leaf veins to simulate the effect of plant respiration, thereby dynamically regulating human body surface temperature.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent fabrics, and in particular to a bionic blade fabric with active thermal regulation, a weaving method thereof, and applications thereof. Background Art

[0002] With the rise of a nationwide sports craze, people's interest in and interest in winter outdoor sports continues to grow. In skiing, inner compression clothing is crucial for maintaining warmth and maintaining optimal performance. Currently, most ski suits on the market utilize a hollow structure that creates a static air gap between the garment and the skin, creating a thermal barrier. However, this approach fails to adapt to changes in body temperature and alter the underlying microenvironment, posing a significant challenge to long-term wear comfort. Therefore, designing an active thermally regulating fabric that can proactively sense and respond to environmental changes is crucial.

[0003] In the related art, existing active thermal control fabrics primarily achieve their active control through the material's significant response to external stimuli such as temperature and humidity. Commonly used responsive materials are generally gel-based materials, carbon-based materials, or shape memory materials. However, due to their complex preparation processes and limited application environments, their market application is very limited. In nature, the porous structure of leaves serves as a channel for temperature and humidity regulation and is also a key organ for the leaf's respiratory movement. Therefore, studying the fabric structure design of bionic leaves can provide important reference for the development of active thermal control fabrics. Summary of the Invention

[0004] In order to overcome the above shortcomings, the purpose of the present invention is to provide a bionic leaf fabric with active thermal regulation and its weaving method and application, which can utilize the changes in bionic leaf vein pores to imitate the effect of plant breathing, thereby dynamically regulating the human body surface temperature.

[0005] In order to achieve the above objectives, one of the technical solutions adopted by the present invention is: a weaving method for bionic blade fabric with active thermal regulation, wherein the bionic blade fabric is a double-layer fabric structure woven together by two yarn mouths on a fully formed four-needle bed computerized flat knitting machine, and the double-layer fabric structure has a porous structure area; during weaving, one yarn mouth feeds the main yarn, and the other yarn mouth feeds the elastic auxiliary yarn; and in the porous structure area, the main yarn is moved, and the auxiliary yarn is placed under the main yarn in the form of a floating thread.

[0006] The beneficial effects of the weaving method of the bionic blade fabric with active thermal regulation of the present invention are:

[0007] 1. Through the shifting needles of the main yarn and the floating threads formed by the elastic auxiliary yarn, the pore size of the porous tissue area can be adjusted according to the changes in the volume of human muscles and the changes in body surface humidity, thereby simulating the changes in the pores of bionic leaf veins and achieving the effect of imitating plant breathing, thereby dynamically adjusting the human body surface temperature and improving wearing comfort.

[0008] 2. The shifting of the main yarn creates leaf-like pores in the fabric. Auxiliary yarns, placed as floating threads in the shifting areas, connect the pores to other areas of the fabric. Initially, the elasticity of the auxiliary yarns closes the pores. When muscles become enlarged due to exercise, the elasticity of the auxiliary yarns stretches the pores, opening the pores created by the shifting of the main yarns. When the muscles cool and return to normal size, the auxiliary yarns retract, closing the pores created by the shifting of the main yarns.

[0009] Furthermore, the fully formed four-needle-bed computerized flat knitting machine has a front lower needle bed, a front upper needle bed, a rear lower needle bed, and a rear upper needle bed; during knitting, the front lower needle bed and the rear lower needle bed respectively weave the main yarn and the auxiliary yarn, and the front upper needle bed and the rear upper needle bed respectively perform needle transfer actions.

[0010] Furthermore, the number of shifting stitches for the main yarn is adjusted based on the pore size of the porous weave area. The larger the pore size of the desired porous weave area, the greater the number of shifting stitches for the main yarn. This allows the shifting area of ​​the main yarn to be larger when the elastic auxiliary yarn is stretched to accommodate the desired pore size.

[0011] Furthermore, the double-layer fabric structure includes at least one knitting unit with a loop of 8 needles, and the knitting steps of the knitting unit include:

[0012] (1) Knitting is first performed on the rear lower needle bed, wherein the first needle is knitted into a loop with the main yarn and the auxiliary yarn; the 2nd to 4th needles are knitted into a loop with the main yarn, and the auxiliary yarn is placed under the main yarn in the form of a floating thread; the 5th to 8th needles are knitted into a loop with the main yarn and the auxiliary yarn; the 7th needle of the rear lower needle bed will perform the needle transfer action, first turn the 7th needle of the rear lower needle bed to the front upper needle bed, perform the rocking action, and move 1 needle to the left, and then turn it to the rear lower needle bed to complete the needle transfer action, so that the rear lower needle bed forms an empty needle position; then on the front needle bed, use the same knitting method as the above rear lower needle bed, and complete the needle transfer action at the 7th needle to form an empty needle position on the front lower needle bed; thus completing the knitting of the first row;

[0013] (2) According to the pattern design, the 6th and 8th needles of the lower needle bed are moved 1 needle to the right and 1 needle to the left respectively, and the circle transfer action is performed to complete the knitting of the second row;

[0014] (3) The 1st to 5th needles on the back lower needle bed and the front lower needle bed are knitted with the main yarn and the auxiliary yarn together, and the 6th to 8th needles are empty needles to complete the third row of knitting;

[0015] (4) The 1st to 5th stitches on the back and front lower needle beds are knitted with the main yarn and the auxiliary yarn together. The 6th and 8th stitches are knitted with the main yarn, and the auxiliary yarn is placed under the main yarn in the form of a floating thread. The 7th stitch is not knitted, and the main yarn and the auxiliary yarn are both floating threads. This completes the knitting of the fourth row.

[0016] (5) Perform a needle transfer action on the third needle of the back lower needle bed and the front lower needle bed, and move the loops on the back lower needle bed and the front lower needle bed to the front upper needle bed and the back upper needle bed respectively, thereby completing the knitting of the fifth row.

[0017] The weaving of a cycle unit can be completed through steps (1)-(5).

[0018] Specifically, the main yarn is selected from the group consisting of natural cotton fiber, natural wool fiber, natural linen fiber, and regenerated cellulose fiber. Natural cotton fiber, natural wool fiber, natural linen fiber, and regenerated cellulose fiber all have good moisture absorption properties. When a person sweats, the main yarn with good moisture absorption properties is very sensitive to changes in humidity. After absorbing moisture, the main yarn expands and its diameter increases, which in turn causes the main yarn to change the size of pores on the fabric surface under the influence of humidity.

[0019] Furthermore, the fiber cross section of the main yarn is in the shape of a groove or a flat cross. Fibers with a groove or a flat cross cross section have better moisture absorption properties.

[0020] Furthermore, the auxiliary yarn is selected from bare spandex yarn, spandex core-spun yarn, and spandex covered yarn. Spandex has excellent elasticity. The larger the pores in the desired porous tissue area, the greater the elasticity of the auxiliary yarn, and the greater the external force required to open the pores in the porous tissue area.

[0021] Specifically, the spandex core-spun yarn and spandex covered yarn have a specification of 1080D, 2070D, and 3060D, and the bare spandex yarn has a specification of 90D, 100D, and 200D. The fineness of the auxiliary yarn is adapted to the model of the fully fashioned four-needle-bed computerized flat knitting machine.

[0022] The second technical solution employed by the present invention is a bionic leaf fabric with active thermal regulation, produced using any of the aforementioned methods for weaving bionic leaf fabrics. This bionic leaf fabric with active thermal regulation enriches the structural design of fully fashioned fabrics and can regulate the size of pores on and within the fabric based on changes in human muscle volume and surface humidity, thereby achieving active regulation of human thermal management.

[0023] The third technical solution adopted by the present invention is: an application of the above-mentioned bionic blade fabric with active thermal regulation in sportswear. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the weaving unit step (1) of an embodiment of the present invention;

[0025] Figure 2 A schematic diagram of the weaving unit step (2) of an embodiment of the present invention;

[0026] Figure 3 This is a weaving schematic diagram of the weaving unit step (3) of an embodiment of the present invention;

[0027] Figure 4 This is a weaving schematic diagram of the weaving unit step (4) of an embodiment of the present invention;

[0028] Figure 5 This is a weaving schematic diagram of the weaving unit step (5) of an embodiment of the present invention;

[0029] Figure 6 Schematic diagram of air permeability analysis of the fabric structures of Examples 1-3 of the present invention under different stretching amounts. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0031] Example

[0032] The bionic blade fabric with active thermal regulation of the present invention is a double-layer fabric structure woven together by two yarn mouths on a fully formed four-needle bed computerized flat knitting machine, wherein the two yarn mouths are a main yarn mouth and an auxiliary yarn mouth, wherein the main yarn mouth is used to feed the main yarn, and the auxiliary yarn mouth is used to feed the auxiliary yarn, and the main yarn is located on the front of the double-layer fabric structure.

[0033] To achieve the porous effect of a bionic leaf, a porous area is set up in the double-layer fabric structure. During the weaving of the porous area, the main yarn is shifted and the auxiliary yarn is placed under the main yarn in the form of floating yarn. The main yarn is made of yarn with good moisture absorption, and the auxiliary yarn is made of elastic yarn.

[0034] Through the coordination of the moving needles of the main yarn and the floating threads formed by the elastic auxiliary yarn, the pore size of the porous tissue area can be adjusted according to the changes in the volume of human muscles and the changes in the surface humidity, thereby simulating the changes in the pores of bionic leaf veins, achieving the effect of imitating plant breathing, thereby dynamically adjusting the human body surface temperature and improving wearing comfort.

[0035] The shifting of the main yarn creates leaf-like pores in the fabric, and the auxiliary yarn, in the form of floating threads, connects the pores to the rest of the fabric. Initially, the elasticity of the auxiliary yarn closes the pores. When muscles become enlarged due to exercise, the elasticity of the auxiliary yarn stretches the pores, opening the pores created by the shifting of the main yarn. When the muscles cool and return to their normal size, the auxiliary yarn retracts, closing the pores created by the shifting of the main yarn.

[0036] The opening and closing of pores in the porous tissue area is achieved through the knitting process of the main and auxiliary yarns, as well as the elasticity of the yarns. The number of stitches in the main yarn and the elasticity of the auxiliary yarns are related to the size of human muscle expansion. When the size of human muscle expansion is large, the required pore size in the porous tissue area increases accordingly, and the elasticity required for the auxiliary yarn also increases, which in turn increases the number of stitches in the main yarn. At the same time, the external force required to open the pores in the porous tissue area increases.

[0037] In some embodiments, the main yarn is made of either natural fiber (e.g., natural cotton fiber, natural wool fiber, natural linen fiber) or regenerated cellulose fiber. Natural cotton fiber, natural wool fiber, natural linen fiber, and regenerated cellulose fiber all have excellent moisture absorption properties. When a person sweats, the main yarn with good moisture absorption properties is very sensitive to changes in humidity. After absorbing moisture, the main yarn expands and its diameter increases, which in turn causes the main yarn to change the pore size of the fabric surface under the influence of humidity. Furthermore, to improve the main yarn's moisture absorption properties, the fiber cross-section of the main yarn is grooved or flattened cross-shaped.

[0038] In some embodiments, the auxiliary yarn is selected from bare spandex yarn, spandex core-spun yarn, and spandex covered yarn. Spandex has excellent elasticity, and elastic yarns with different elastic recovery rates can be used based on the muscle expansion volume of different parts of the human body. The fineness of the elastic yarn can be adapted to the model of the fully fashioned four-needle-bed computerized flat knitting machine. For example, the bare spandex yarn can be any of 90D, 100D, and 200D, while the spandex core-spun yarn and spandex covered yarn can be any of 1080D, 2070D, and 3060D.

[0039] The present invention also provides a weaving method for bionic blade fabric with active thermal regulation, which includes designing a double-layer fabric structure on a four-needle-bed fully-formed computer flat knitting machine, then importing the plate making program into the weaving setting system of the fully-formed four-needle-bed computer flat knitting machine, and setting the main yarn feeder and the auxiliary yarn feeder to complete the weaving.

[0040] It should be noted that the fully formed four-needle-bed computerized flat knitting machine has a front lower needle bed, a front upper needle bed, a rear lower needle bed, and a rear upper needle bed; when knitting, the front lower needle bed and the rear lower needle bed weave the main yarn and the auxiliary yarn respectively, and the front upper needle bed and the rear upper needle bed perform needle transfer actions respectively.

[0041] In some embodiments, when designing a double-layer fabric structure, the double-layer fabric structure includes at least one knitting unit with a loop of 8 needles, and the knitting steps of the knitting unit include:

[0042] (1) If Figure 1 As shown in (a), the front lower needle bed keeps the loop state, and knitting is performed on the rear lower needle bed first, wherein the first needle is knitted with the main yarn and the auxiliary yarn together; the 2nd to 4th needles are knitted with the main yarn together, and the auxiliary yarn is placed under the main yarn in the form of a floating yarn; the 5th to 8th needles are knitted with the main yarn and the auxiliary yarn together;

[0043] like Figure 1 As shown in (b), the 7th needle of the rear lower needle bed performs the needle transfer action, firstly transfer the 7th needle of the rear lower needle bed to the front upper needle bed; Figure 1 As shown in (c), the table is shaken and moved to the left by one needle, and the needle is turned over to the rear lower needle bed to complete the needle turning action so that an empty needle position is formed on the rear needle bed;

[0044] like Figure 1 As shown in (d), (e) and (g), on the front lower needle bed, the same knitting method as that of the above-mentioned rear lower needle bed is adopted, and the needle transfer action is completed at the position of the 7th needle to form an empty needle position, thereby completing the knitting of the first row.

[0045] (2) If Figure 2 As shown, according to the pattern design, the 6th and 8th needles on the lower back needle bed are moved 1 needle to the right and 1 needle to the left respectively to perform the circle transfer action, thereby completing the knitting of the second row.

[0046] (3) If Figure 3 As shown, the 1st to 5th needles on the rear lower needle bed and the front lower needle bed are knitted with the main yarn and the auxiliary yarn together, and after the knitting of steps (1) and (2), the 6th to 8th needles are all empty needles, and are in a tuck shape after the knitting action, thereby completing the knitting of the third row.

[0047] (4) If Figure 4 As shown, the 1st to 5th stitches on the rear lower needle bed and the front lower needle bed are knitted with the main yarn and the auxiliary yarn together, the 6th and 8th stitches are knitted with the main yarn, and the auxiliary yarn is placed under the main yarn in the form of a floating yarn, and the 7th stitch is not inserted, and the main yarn and the auxiliary yarn are both floating yarns; this completes the knitting of the fourth row.

[0048] (5) If Figure 5As shown, the third needle of the rear lower needle bed and the front lower needle bed is transferred, and the loops on the rear lower needle bed and the front lower needle bed are moved to the front upper needle bed and the rear upper needle bed respectively, thereby completing the knitting of the fifth row.

[0049] The above steps complete the weaving of a cycle unit, wherein the dotted part only weaves the main yarn, and the auxiliary yarn exists in the form of floating yarn; the solid line part is weaved into a loop with the main yarn and the auxiliary yarn.

[0050] During weaving, the needle shifting position of the main yarn is designed according to the shape of the blade, and the pore part of the blade is formed by using the needle shifting position, and finally the curved part of the edge of the blade is formed. In addition, in the pore part, due to the presence of elastic auxiliary yarn in the form of floating line, the pore part can be opened or closed.

[0051] Example 1

[0052] Natural wool yarn is used as the main yarn, and 1080D polyester-spandex covered yarn (the fineness of spandex is 10D, and the fineness of polyester is 80D) is used as the auxiliary yarn. The fabric is woven according to the following weaving steps to obtain the fabric structure:

[0053] (1) Knitting is first performed on the rear lower needle bed, wherein the first needle is knitted into a loop with the main yarn and the auxiliary yarn; the 2-4 needles are knitted into a loop with the main yarn, and the auxiliary yarn is placed under the main yarn in the form of a floating thread; the 5-8 needles are knitted into a loop with the main yarn and the auxiliary yarn; the 7th needle of the rear lower needle bed will perform the needle transfer action, first turn the 7th needle of the rear lower needle bed to the front upper needle bed, perform the rocking bed, and move the needle to the left, turn it to the rear lower needle bed, and complete the needle transfer action, so that the rear needle bed forms an empty needle position; the front needle bed adopts the same method as the rear needle bed, and completes the needle transfer action at the position of the 7th needle to form an empty needle position, completing a row of knitting;

[0054] (2) According to the pattern design, the 6th and 8th needles of the lower needle bed are moved 1 needle to the right and 1 needle to the left respectively, and the needle transfer and circle transfer actions are performed to complete the knitting of the second row;

[0055] (3) The main yarn and the auxiliary yarn are used to knit the 1-5 needles of the rear lower needle bed and the front lower needle bed together. Through the operation process of step (1) and step (2), the 6-8 needles are empty needles. After the knitting action, they are in a tuck shape, completing the third row of knitting;

[0056] (4) The 1st to 5th needles of the rear lower needle bed and the front lower needle bed are knitted with the main yarn and the auxiliary yarn together. The 6th and 8th needles are knitted with the main yarn. The auxiliary yarn is placed under the main yarn in the form of a floating thread. The 7th needle is not inserted. The main yarn and the auxiliary yarn are both floating threads to complete the knitting of the fourth row.

[0057] (5) Perform the needle transfer action on the third needle of the lower back needle bed and the lower front needle bed, and move the loop to the upper front and upper back needle beds respectively to complete the knitting of the fifth row.

[0058] Example 2

[0059] The difference between this embodiment and embodiment 1 is that the specification of the polyester-spandex covered yarn is 2070D (the fineness of the spandex is 20D, and the fineness of the polyester is 70D).

[0060] Example 3

[0061] The difference between this embodiment and embodiment 1 is that the specification of the polyester-spandex covered yarn is 3060D (the fineness of the spandex is 30D, and the fineness of the polyester is 60D).

[0062] Experimental example

[0063] The fabrics prepared in Examples 1-3 were tested for air permeability under different stretching conditions. The test standard is GB / T5453-1997. The test results are shown in the figure below. Figure 6 As shown. Figure 6 It can be seen that with the increase in stretching amount, the air permeability of the fabric tissues prepared in Examples 1-3 all increased, and the air permeability of the fabric tissue of Example 2 changed the most.

[0064] The bionic blade fabric with active thermal regulation of the present invention enriches the structural design of fully formed fabrics, and can regulate the size changes of the fabric surface and internal pores according to the changes in human muscle volume and body surface humidity, thereby realizing active regulation of human thermal management.

[0065] The above embodiments are only for illustrating the technical concept and features of the present invention. Its purpose is to enable people familiar with this technology to understand the content of the present invention and implement it. It cannot be used to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for weaving a bionic blade fabric with active thermal regulation, characterized by: The bionic blade fabric is a double-layer fabric structure woven together by two yarn mouths on a fully formed four-needle-bed computerized flat knitting machine, and the double-layer fabric structure has a porous structure area; during weaving, one yarn mouth feeds the main yarn and the other yarn mouth feeds the elastic auxiliary yarn; and in the porous structure area, the main yarn is moved, and the auxiliary yarn is placed under the main yarn in the form of a floating thread.

2. The weaving method of the bionic blade fabric according to claim 1, characterized in that: The fully formed four-needle-bed computerized flat knitting machine comprises a front lower needle bed, a front upper needle bed, a rear lower needle bed and a rear upper needle bed; during knitting, the front lower needle bed and the rear lower needle bed respectively knit the main yarn and the auxiliary yarn, and the front upper needle bed and the rear upper needle bed respectively perform needle transfer actions.

3. The weaving method of the bionic blade fabric according to claim 2, characterized in that: The number of shifting needles of the main yarn is adjusted according to the pore size of the pore tissue area.

4. The weaving method of the bionic blade fabric according to claim 2, characterized in that: The double-layer fabric structure includes at least one weaving unit with 8 needles as one cycle, and the weaving steps of the weaving unit include: (1) Knitting is first performed on the lower needle bed: the first needle is knitted with the main yarn and the auxiliary yarn together; the second to fourth needles are knitted with the main yarn together, and the auxiliary yarn is placed under the main yarn in the form of floating yarn; the fifth to eighth needles are knitted with the main yarn and the auxiliary yarn together; The 7th needle on the rear lower needle bed performs the needle transfer action: first, the 7th needle on the rear lower needle bed is transferred to the front upper needle bed, the bed is shaken, and one needle is moved to the left, and then the needle is transferred to the rear lower needle bed to complete the needle transfer action, so that the rear lower needle bed forms an empty needle position; Then, on the front needle bed, use the same knitting method as the above-mentioned rear lower needle bed, and complete the needle transfer action at the 7th needle to form an empty needle position on the front lower needle bed; thus completing the knitting of the first row; (2) According to the pattern design, the 6th and 8th needles of the lower needle bed are moved 1 needle to the right and 1 needle to the left respectively, and the circle transfer action is performed to complete the knitting of the second row; (3) The 1st to 5th needles on the back and front lower needle beds are knitted with the main yarn and the auxiliary yarn together, and the 6th to 8th needles are empty needles, in a tuck shape; thus completing the third row of knitting; (4) The 1st to 5th stitches on the back and front lower needle beds are knitted with the main yarn and the auxiliary yarn together. The 6th and 8th stitches are knitted with the main yarn, and the auxiliary yarn is placed under the main yarn in the form of a floating thread. The 7th stitch is not knitted, and the main yarn and the auxiliary yarn are both floating threads. This completes the knitting of the fourth row. (5) Perform a needle transfer action on the third needle of the back lower needle bed and the front lower needle bed, and move the loops on the back lower needle bed and the front lower needle bed to the front upper needle bed and the back upper needle bed respectively, thereby completing the knitting of the fifth row.

5. The weaving method of the bionic blade fabric according to claim 4, characterized in that: The main yarn is made of one of natural cotton fiber, natural wool fiber, natural hemp fiber and regenerated cellulose fiber.

6. The method for weaving a bionic blade fabric according to claim 5, characterized in that: The fiber cross section of the main yarn is in the shape of a groove or a flat cross.

7. The method for weaving a bionic blade fabric according to claim 4, characterized in that: The auxiliary yarn is one of bare spandex yarn, spandex core-spun yarn and spandex covered yarn.

8. The method for weaving a bionic blade fabric according to claim 7, characterized in that: The specifications of the spandex core-spun yarn and the spandex covered yarn are one of 1080D, 2070D, and 3060D, and the specifications of the bare spandex yarn are one of 90D, 100D, and 200D.

9. A bionic blade fabric with active thermal regulation, characterized by: The bionic blade fabric is made by the weaving method of any one of claims 1 to 8.

10. Use of the bionic blade fabric with active thermal regulation according to claim 9 in sportswear.

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