Breathable double-layer knitted fabric

Abstract

A breathable double-layer knitted fabric with a porous structure includes a first knitted layer and a second knitted layer. The first knitted layer has a first loop and a first float. The second knitted layer is interwoven with the first knitted layer and has a second loop, a second float, a tuck, a delayed loop, and a delayed tuck, wherein the delayed loop, tuck, tuck, and delayed tuck are arranged sequentially to form a delayed triangle structure combination, and the delayed triangle structure combination is aligned with the first float to form a porous structure. The breathable double-layer knitted fabric disclosed herein possesses excellent breathability.

Description

Technical Field

[0001] This disclosure relates to a breathable double-layer knitted fabric, and more particularly to a breathable double-layer knitted fabric with a porous structure. Background Technology

[0002] With the improvement of living standards in modern society, people's demand for functional textiles is also increasing. Furthermore, with the continuous emergence of various functional textiles, the development of functional textiles with specific purposes is becoming increasingly sophisticated. For example, consumers are increasingly demanding textiles that combine breathability, moisture absorption, and quick-drying properties.

[0003] However, current technology cannot create perforations in double-knitted fabrics that are substantially permeable to the fabric itself. This limits the breathability and moisture-wicking properties of double-knitted fabrics, making it difficult to provide comfortable wear and meet user needs. Therefore, how to effectively improve the breathability and moisture-wicking properties of double-knitted fabrics is an important research topic for the textile industry. Summary of the Invention

[0004] This disclosure provides a breathable double-layer knitted fabric with a porous structure, which has good breathability.

[0005] According to some embodiments disclosed herein, a breathable double-layer knitted fabric with a porous structure includes a first knitted layer and a second knitted layer. The first knitted layer has a first loop and a first float. The second knitted layer is interwoven with the first knitted layer and has a second loop, a second float, a tuck, a delayed loop, and a delayed tuck, wherein the delayed loop, tuck, tuck, and delayed tuck are arranged sequentially to form a delayed triangle structure combination, and the delayed triangle structure combination is aligned with the first float to form a porous structure.

[0006] In some implementations, the first loop is aligned with the clustered loop to form a bird's eye structure.

[0007] In some embodiments, the perforated structure is the air vent of the breathable double-knitted fabric, and the bird's-eye structure is the core absorption point of the breathable double-knitted fabric.

[0008] In some embodiments, the first knitting layer and the second knitting layer are aligned to form a connecting structure, and the connecting structure causes the first knitting layer and the second knitting layer to interweave with each other.

[0009] In some embodiments, the first float is aligned with the coil to form a porous structure, and the size of the porous structure is smaller than the size of the hole structure.

[0010] In some embodiments, the breathable double-layer knitted fabric is woven from 100 wt% inelastic yarn or from 86 wt% to 99.9 wt% inelastic yarn and 0.1 wt% to 14 wt% elastic yarn, with the width of the perforation structure between 0.42 mm and 0.49 mm and the length of the perforation structure between 0.75 mm and 0.82 mm.

[0011] In some implementations, the breathability of the breathable double-knitted fabric is between 300 cfm and 400 cfm.

[0012] In some embodiments, the moisture diffusion capacity of the breathable double-layer knitted fabric, as measured by the standard method FTTS-FA-004, is between 2200 mm. 2 / 20sec (20-second diffusion area) to 2500mm 2 / 20sec (20-second diffusion area) interval.

[0013] In some embodiments, the breathable double-layer knitted fabric is woven from 75wt% to 85wt% of inelastic yarn and 15wt% to 25wt% of elastic yarn, with the width of the perforation structure ranging from 0.16mm to 0.28mm and the length of the perforation structure ranging from 0.64mm to 0.74mm.

[0014] In some implementations, the breathability of the breathable double-knitted fabric is between 63 cfm and 77 cfm.

[0015] According to the above-described embodiments disclosed herein, since the perforation structure of the breathable double-layer knitted fabric is formed by a combination of specially designed delayed triangle structures, the perforation structure is a hole that actually passes through the breathable double-layer knitted fabric, rather than a visual hole such as a mesh structure or a bird's-eye structure, thereby giving the breathable double-layer knitted fabric good breathability. Attached Figure Description

[0016] Figure 1 A weave diagram of a breathable double-layer knitted fabric according to some embodiments of this disclosure is shown;

[0017] Figures 2A to 2F A top-view diagram showing various triangles on a loom; and

[0018] Figures 3A to 3C A plan view of a breathable double-layer knitted fabric according to different embodiments of the present disclosure is shown;

[0019] The symbols are explained as follows:

[0020] 100: Breathable double-layer knitted fabric; 110: First knitted layer

[0021] 120: Second knit layer 200a~200f: Triangle

[0022] S1: First float; S2: Second float

[0023] F1: First lap F2: Second lap

[0024] H: Clustering; DF: Delayed Clustering

[0025] DH: Delayed loop; DT: Delayed triangle structure combination

[0026] K: Needle combination BY: Bird's eye structure

[0027] O: Hole structure P: Fixing hole

[0028] R: Groove. Detailed Implementation

[0029] The following describes several embodiments of this disclosure with reference to the accompanying drawings. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this disclosure. That is, in some embodiments of this disclosure, these practical details are not essential and therefore should not be used to limit this disclosure. Furthermore, for the sake of simplicity in the drawings, some conventional structures and components will be shown in a simplified schematic manner. In addition, for the reader's convenience, the dimensions of the components in the drawings are not drawn to scale.

[0030] This disclosure provides a breathable double-layer knitted fabric with a porous structure. Because the porous structure is formed by a combination of specially designed delayed triangle structures, the porous structure allows substantial penetration through the breathable double-layer knitted fabric, thus providing excellent breathability. The breathable double-layer knitted fabric disclosed herein is applicable to functional textiles, such as sportswear (e.g., running apparel, yoga apparel, mountaineering apparel, etc.).

[0031] Please see Figure 1The diagram illustrates the weave pattern of a breathable double-layer knitted fabric 100 according to some embodiments of the present disclosure. The breathable double-layer knitted fabric 100 includes a first knitted layer 110 and a second knitted layer 120 interwoven with the first knitted layer 110. The first knitted layer 110 has a first loop F1 and a first float S1, and the second knitted layer 120 has a second loop F2, a second float S2, a tuck H, a delayed loop DF, and a delayed tuck DH. By adjusting the alignment of the yarn loops and floats of the first knitted layer 110 with those of the second knitted layer 120, the breathable double-layer knitted fabric 100 can have different structures or patterns. In this disclosure, by sequentially arranging the delayed loops DF, H, H, and DH of the second knitted layer 120, the needle loops are gradually enlarged during yarn mixing to form a delayed triangle structure combination DT. The delayed triangle structure combination DT is then aligned with the first float S1 of the first knitted layer 110, thereby forming a perforated structure that substantially penetrates the breathable double-layer knitted fabric 100. It should be understood that... Figure 1 The needle combination K shown is only an illustrative example. Different needle combinations K can be used to form breathable double-layer knitted fabrics 100 with different patterns.

[0032] Please refer to the following first. Figures 2A to 2F The diagram illustrates a top view of various triangles 200a to 200f in a loom. The breathable double-layer knitted fabric 100 disclosed herein can be knitted using, for example, a circular knitting machine with triangles 200a to 200f. In some embodiments, each of triangles 200a to 200f may have a fixing hole P and a groove R, wherein the fixing hole P can be configured to fix triangles 200a to 200f on the loom, and the groove R can be configured to allow passage for the yarn loops and floats of this disclosure. In other words, it can be achieved by... Figures 2A to 2F Various triangles are used to form the yarn loops and floats disclosed herein. For example, this can be achieved by... Figure 2A The triangle 200a forms the first loop F1, which can be achieved by... Figure 2B The triangle 200b is used to form the second loop F2, which can be achieved by... Figure 2C The triangle 200c is used to form the first float S1 and the second float S2, which can be achieved by... Figure 2D The triangle 200d is used to form the condenser ring H, which can be achieved by... Figure 2E The triangle 200e is used to form the delayed loop DF, and it can be achieved by... Figure 2F The triangle 200f is used to form the delay set DH.

[0033] Please return Figure 1In some embodiments, the delayed triangle structure combination DT can be aligned with at least one first float S1 of the first knitted layer 110, and up to four first floats S1 of the first knitted layer 110, to form a perforated structure. More specifically, the delayed triangle structure combination DT can be aligned with one first float S1 and three first loops F1 in any arrangement, two first floats S1 and two first loops F1 in any arrangement, three first floats S1 and one first loop F1 in any arrangement, or four first floats S1 in any arrangement to form a perforated structure. When the delayed triangle structure combination DT is aligned with multiple first floats S1, the perforated structure can have a larger size, thereby improving the breathability of the breathable double-layer knitted fabric 100.

[0034] Because the perforated structure disclosed herein is a substantially perforated perforation through the breathable double-knitted fabric 100, and not a visually perforated structure such as a mesh or bird's-eye structure, in some embodiments, the perforated structure can constitute air-permeable points of the breathable double-knitted fabric 100. In other words, gas (e.g., air) can flow to a certain extent through the perforated structure of the breathable double-knitted fabric 100 from one side of the fabric 100 to the opposite side, thereby improving the breathability of the fabric 100. In some embodiments, the perforated structure may have mutually perpendicular major and minor axes, wherein the maximum length of the major axis (i.e., the length of the perforated structure) and the maximum length of the minor axis (i.e., the width of the perforated structure) can each fall within a certain range, thereby improving the breathability of the breathable double-knitted fabric 100. It should be understood that since the proportion of yarn types (e.g., elastic yarn, non-elastic yarn, etc.) in a fabric can have a significant impact on the size of the pore structure, the size of the pore structure of a breathable double-layer knitted fabric 100 woven from different types of yarns cannot be generalized.

[0035] In some embodiments, the breathable double-knitted fabric 100 may have a low content (proportion) of elastic yarn. For example, the breathable double-knitted fabric 100 may be woven from 100 wt% non-elastic yarn, or from 86 wt% to 99.9 wt% non-elastic yarn and 0.1 wt% to 14 wt% elastic yarn. When the content (proportion) of elastic yarn in the breathable double-knitted fabric 100 falls within the above range, the width of the perforation structure of the low-elasticity breathable double-knitted fabric 100 may be between 0.42 mm and 0.49 mm, and the length of the perforation structure may be between 0.75 mm and 0.82 mm. In other embodiments, the breathable double-knitted fabric 100 may have a high content (proportion) of elastic yarn. For example, the breathable double-knitted fabric 100 may be woven from 75 wt% to 85 wt% non-elastic yarn and 15 wt% to 25 wt% elastic yarn. When the content (proportion) of elastic yarn in the breathable double-knitted fabric 100 falls within the aforementioned range, the width of the perforation structure of the highly elastic breathable double-knitted fabric 100 can be between 0.16 mm and 0.28 mm, and the length of the perforation structure can be between 0.64 mm and 0.74 mm. Since the perforation structure disclosed herein is formed by a delayed triangle structure combination (DT), the perforation structure can have suitable dimensions to provide good breathability, and the size of the perforation structure can still be maintained within a certain range as the proportion of elastic yarn in the breathable double-knitted fabric 100 increases. It should be noted that in conventional fabrics without the delayed triangle structure combination (DT), the perforations are merely "gaps" formed by needle loops, which are small in size and only observable after high-intensity stretching, and cannot provide breathability. Furthermore, as the proportion of elastic yarn in the fabric increases, the gaps will significantly shrink or even disappear.

[0036] In some embodiments, the first loop F1 of the first knitted layer 110 may be aligned with the tuck H of the second knitted layer 120 to form a bird's-eye structure in the breathable double-knitted fabric 100. Specifically, the bird's-eye structure is a "dimple" located on the surface of the breathable double-knitted fabric 100, rather than a hole that actually passes through the breathable double-knitted fabric 100. Because the bird's-eye structure can create a wicking effect to quickly wick away sweat, facilitating sweat evaporation, in some embodiments, the bird's-eye structure may constitute a wicking point of the breathable double-knitted fabric 100. In some embodiments, the area ratio of the bird's-eye structure on a single surface of the breathable double-knitted fabric 100 may be between 5% and 35% to quickly wick away sweat produced by the user's body, giving the breathable double-knitted fabric 100 good moisture-wicking properties.

[0037] In some embodiments, the first loop F1 of the first knitted layer 110 can be aligned with the second loop F2 of the second knitted layer 120 to form a connecting structure in the breathable double-knitted fabric 100. Specifically, when the first loop F1 and the second loop F2 are aligned, they can interweave to form a connecting structure, thereby ensuring that the first knitted layer 110 and the second knitted layer 120 are securely interwoven. Through this connecting structure configuration, the breathable double-knitted fabric 100 can have good structural stability, thereby improving the dimensional stability of the perforated structure and enabling the breathable double-knitted fabric 100 to stably maintain good breathability.

[0038] In some embodiments, the first float S1 of the first knitted layer 110 may be aligned with the second float S2 of the second knitted layer 120 to form a porous structure in the breathable double-knitted fabric 100. In some embodiments, the size of the porous structure is smaller than the size of the pore structure. More specifically, since the porous structure is formed by the needles not exiting the knitting process, the porous structure can be equated to "gaps" in the breathable double-knitted fabric 100, which are small in size and can only be observed through high-intensity stretching, and do not provide breathability. By utilizing the pore structure configuration, the surface of the breathable double-knitted fabric 100 can have an uneven texture (pattern), which helps sweat to be absorbed from the user's body into the breathable double-knitted fabric 100 and / or wicked away from the breathable double-knitted fabric 100 into the environment, thereby improving the moisture absorption and wicking properties of the breathable double-knitted fabric 100 and reducing the probability of the breathable double-knitted fabric 100 sticking to the user's body after absorbing moisture, thus reducing the sticky feeling.

[0039] Please see Figures 3A to 3C The diagrams depict planar knitting patterns of breathable double-layer knitted fabrics 100a to 100c according to different embodiments of the present disclosure. Since the breathable double-layer knitted fabrics 100a to 100c are woven using different needle combinations K, they can have different patterns. Furthermore, in Figures 3A to 3CIn this document, the pore structure disclosed herein is indicated by the symbol "O", and the bird's-eye structure is indicated by the symbol "BY". In the following description, the fabric pore structure size, fabric coverage, fabric air permeability, and fabric moisture diffusion capacity of the double-layer knitted fabrics of each embodiment and comparative example will be evaluated. The fabric pore structure size and fabric coverage are calculated by binarizing images of the double-layer knitted fabric. Fabric air permeability is measured using the standard method CNS5612, and fabric moisture diffusion capacity is measured using the standard method FTTS-FA-004. Other details and evaluation results of each embodiment and comparative example are shown in Table 1. All embodiments and comparative examples are 28-gauge double-layer knitted fabrics, and the only difference between the embodiments and comparative examples is that the comparative examples do not have a delayed triangle structure combination. It should be understood that the materials used, their quantities and proportions, processing details, and processing procedures can be appropriately changed without departing from the scope of this disclosure. Therefore, this disclosure should not be interpreted as limiting by the embodiments described below.

[0040] Table 1

[0041]

[0042] Note 1: The evaluation of each embodiment and each comparative example is based on the range of values ​​formed by the maximum and minimum values ​​after measuring five samples.

[0043] Note 2: The unit for the fabric's ability to diffuse moisture is mm. 2 / 20sec indicates the area of ​​moisture diffusion on the fabric after 20 seconds.

[0044] As can be seen from the results of Example 1 and Comparative Example 1, and Example 2 and Comparative Example 2, regardless of whether the double-layer knitted fabric is low-elasticity or high-elasticity, the double-layer knitted fabric with a perforated structure formed by the combination of delayed triangle structures has a larger fabric perforated structure size, lower fabric coverage, better breathability, and better fabric moisture diffusion ability. Therefore, when a double-layer knitted fabric has a perforated structure formed by the combination of delayed triangle structures, the breathability of the double-layer knitted fabric can be improved. Furthermore, the combination of perforated structure and bird's-eye structure can improve the moisture absorption and wicking properties of the double-layer knitted fabric. It should be noted that the "perforated structure" in Comparative Examples 1 and 2 is only the "gap" mentioned above, which is formed only through needle loops during the knitting process, and is not the "perforated structure" referred to in this disclosure.

[0045] According to the embodiments disclosed herein, since the perforation structure of the breathable double-layer knitted fabric is formed by a combination of specially designed delayed triangle structures, the perforation structure is a substantial perforation that passes through the breathable double-layer knitted fabric, rather than a visually perforated structure such as a mesh structure or bird's-eye structure, thereby giving the breathable double-layer knitted fabric excellent breathability. Furthermore, the combination of bird's-eye structure and connecting knots further enhances the breathability and moisture-wicking properties of the breathable double-layer knitted fabric. Additionally, the configuration of the perforation structure allows the surface of the breathable double-layer knitted fabric to have an uneven texture, which helps improve the moisture-wicking properties of the breathable double-layer knitted fabric and reduces the stickiness caused by the breathable double-layer knitted fabric adhering to the user's body. Therefore, the breathable double-layer knitted fabric disclosed herein is applicable to functional textiles such as sportswear (e.g., running apparel, yoga apparel, hiking apparel, etc.).

[0046] Although the present disclosure has been described above with reference to embodiments, it is not intended to limit the present disclosure. Anyone skilled in the art may make various modifications and alterations without departing from the spirit and scope of the present disclosure. Therefore, the scope of protection of the present disclosure shall be determined by the appended claims.

Claims

1. A breathable double-layered knitted fabric, characterized by, The breathable double-layer knitted fabric, having a porous structure, comprises: The first knitted layer has a first loop and a first float; and The second knitted layer is interwoven with the first knitted layer. The second knitted layer has a second loop, a second float, a tuft, a delayed loop, and a delayed tuft. The delayed loop, the tuft, the tuft, and the delayed tuft are arranged in sequence to form a delayed triangle structure combination, and the delayed triangle structure combination is aligned with the first float to form the hole structure.

2. The breathable double-layer knitted fabric as claimed in claim 1, wherein the first loop is aligned with the tufted loop to form a bird's-eye structure.

3. The breathable double-layer knitted fabric as described in claim 2, wherein the perforated structure is the breathable point of the breathable double-layer knitted fabric, and the bird's-eye structure is the core absorption point of the breathable double-layer knitted fabric.

4. The breathable double-layer knitted fabric as claimed in claim 1, wherein the first loop and the second loop are aligned to form a connecting structure, and the connecting structure causes the first knitted layer and the second knitted layer to interweave with each other.

5. The breathable double-layer knitted fabric as claimed in claim 1, wherein the first float is aligned with the tuck loop to form a porous structure, and the size of the porous structure is smaller than the size of the hole structure.

6. The breathable double-layer knitted fabric as claimed in claim 1, wherein the breathable double-layer knitted fabric is woven from 100 wt% non-elastic yarn or from 86 wt% to 99.9 wt% non-elastic yarn and 0.1 wt% to 14 wt% elastic yarn, wherein the width of the perforation structure is between 0.42 mm and 0.49 mm, and the length of the perforation structure is between 0.75 mm and 0.82 mm.

7. The breathable double-layer knitted fabric as claimed in claim 6, wherein the breathability of the breathable double-layer knitted fabric is between 300 cfm and 400 cfm.

8. The breathable double-layered knitted fabric of claim 6, wherein the moisture diffusion capacity of the breathable double-layered knitted fabric is between 2200 mm 2 / 20 sec and 2500 mm 2 / 20 sec, as measured under the Standard Method FTTS-FA-004.

9. The breathable double-layer knitted fabric as claimed in claim 1, wherein the breathable double-layer knitted fabric is woven from 75wt% to 85wt% of non-elastic yarn and 15wt% to 25wt% of elastic yarn, the width of the perforation structure is between 0.16mm and 0.28mm, and the length of the perforation structure is between 0.64mm and 0.74mm.

10. The breathable double-layer knitted fabric of claim 9, wherein the breathability of the breathable double-layer knitted fabric is between 63 cfm and 77 cfm.

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