Knitted fabric with sustained coolness and breathability

Abstract

To provide a knitted fabric which has both a cool touch feeling and a sustained cool feeling, and has excellent breathability and a comfortable feel when used. [Solution] The knitted fabric comprises a plain knit section made of plain knit loops 10, 10' and a jacquard mesh section made of a mesh or tuck structure formed by jacquard control, arranged adjacently or alternately within the same fabric. The plain knit section ensures a contact area with the human body, while the jacquard mesh section forms a ventilation hole structure and air flow passages 30a, achieving both a cool touch and breathability.

Description

[Technical Field]

[0001] The present invention relates to the field of textile materials, and in particular to knitted fabrics that have a cooling sensation to the touch (instant cooling sensation), a sustained cooling sensation, and breathability. [Background technology]

[0002] BACKGROUND ART In recent years, with the progress of global warming, hot and humid summer environments have become more pronounced, and consumers are increasingly demanding higher comfort levels from home textile products for summer use.

[0003] Conventional functional textile products for summer use are required to have flexibility and a good feel, as well as a cool-to-the-touch sensation due to instantaneous heat dissipation upon contact with the skin, heat dissipation due to continuous heat diffusion during use, and high breathability to prevent stuffiness inside clothing or bedding.

[0004] However, there are not enough knitted fabrics that satisfy all of these properties at the same time, and there is a particular demand for knitted fabrics that have excellent breathability while also providing both a cool touch and a sustained cool feeling.

[0005] Therefore, there is a need to provide a knitted fabric that has a long-lasting cool sensation and breathability in order to solve the above problems. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Utility Model Registration No. 3245906 Summary of the Invention [Problem to be solved by the invention]

[0007] The technical objective of this invention is to provide a knitted fabric that has a higher cooling sensation performance than conventional products, has excellent breathability, and is lightweight and comfortable to use.

[0008] That is, the object of the present invention is to provide a cooling fabric having a novel structure compared to conventional techniques.

[0009] Conventionally, knitted fabrics having cooling properties (hereinafter referred to as "cooling fabrics") have been realized mainly by the following methods.

[0010] (1) Knitting using highly thermally conductive fibers (2) Post-processing using cooling agents or phase change microcapsules (3) Use of recycled fibers containing phase change materials However, in the post-processing method (2) above, the phase-change microcapsules must be fixed to the surface of the fabric via a binder, which causes problems such as impairing the texture of the fabric and reducing its breathability.

[0011] Furthermore, in the method (3) using phase-change fibers, there are restrictions on the material composition and manufacturing process, making it difficult to sufficiently increase the content of the phase-change material, resulting in a problem that the phase-change enthalpy value remains generally below 15 J / g, making it impossible to obtain a sufficient sustained cooling effect. [Means for solving the problem]

[0012] In order to solve the above problems, the present invention adopts the following configuration. The knitted fabric of the present invention is a knitted fabric that has cool durability and breathability, and is characterized by its structure being a combination of plain knitting and jacquard mesh.

[0013] The jacquard mesh weave is formed by one or a combination of a plurality of weaves selected from the group consisting of a tuck weave, a saree weave, a plain jacquard weave, a plated weave and a through-hole structure.

[0014] The knitted fabric contains 70 mass % or more of a highly thermally conductive material having a thermal conductivity of 0.2 W / (m·°C) or more, and phase change heat storage fibers are used as all or part of the highly thermally conductive material.

[0015] The phase change heat storage fiber is based on polyethylene fiber (PE), polyamide fiber (PA), or a composite fiber thereof (PE / PA composite fiber), and has a phase change enthalpy value of 20 J / g or more.

[0016] Furthermore, the enthalpy value of the heat storage phase change fiber does not substantially decrease even after multiple water washing treatments.

[0017] The knitted fabric of this invention is a knitted fabric, and its basis weight is 70 g / m 2 ~500 g / m 2 is set to the range. 2

[0018] The plain knitted fabric portion has a regular loop arrangement and a flat and smooth fabric surface, ensuring a large contact area with the human body, efficiently absorbing body heat and providing a strong cooling sensation to the touch.

[0019] On the other hand, the jacquard mesh weave is formed by combining one or more of a tuck weave, a saree weave, a plated weave and a through-hole structure, and forms a ventilated structure on the surface of the fabric. [Effects of the Invention]

[0020] This creates a fine air layer between the fabric and the human skin, reducing the area of ​​direct contact, improving breathability and sweat discharge efficiency, and providing excellent skin-releasing properties.

[0021] In this way, the knitted fabric of the present invention combines a plain knit structure and a jacquard mesh structure, thereby providing instant cooling, sustained cooling, and sustained heat dissipation and breathability.

[0022] The knitted fabric of the present invention is suitable for use in household textile products such as bed covers, blankets, mattress pads, pillow pads, huggable pillows, cushions, sheets, and various covers. [Brief explanation of the drawings]

[0023] [Figure 1] Schematic diagram showing the structure of plain knit stitch. [Figure 2] Schematic diagram showing the structure of a mesh structure and a tuck structure (mesh + tuck structure). [Figure 3] Schematic diagram showing a composite structure combining a plain knit area and a mesh / tuck area. [Figure 4] Schematic diagram showing the planar structure (area arrangement) of knitted fabric. [Figure 5] FIG. 3 is a schematic diagram showing the knitting structure of a flat knitted structure portion. [Figure 6] FIG. 2 is a schematic diagram showing the knitting structure of a jacquard mesh structure portion. [Figure 7] Schematic diagram showing the cross-sectional structure of the fabric. DETAILED DESCRIPTION OF THE INVENTION

[0024] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are merely examples of the present invention, and the present invention is not limited to these embodiments.

[0025] (flat knitting structure) As shown in FIG. 1, the plain knitted structure is composed of a plurality of continuously arranged loops 10, each loop being formed sequentially along the knitting direction. An arrow 11 indicates the direction of movement of the knitting needle to form a loop of yarn during knitting.

[0026] As described above, the regular loop arrangement of the plain knit fabric makes the surface of the fabric flat and smooth, increasing the contact area with the human skin and contributing to improved cool-to-the-touch performance.

[0027] (Mesh / tuck structure) As shown in FIG. 2, the left diagram shows a knitting structure including normal loops 20a and tuck loops 21.

[0028] Due to the non-disengagement action in the tucked structure, multiple loops are gathered at the same needle position, forming a three-dimensional loop structure 20b after tucking as shown in the right figure.

[0029] This loop accumulation and tension change creates a mesh-like ventilation hole structure 22 in the adjacent area, giving the fabric excellent breathability and heat dissipation properties.

[0030] (Composite structure of flat knitting area and mesh / tuck area) As shown in FIG. 3, the knitted fabric of the present invention has plain knitted areas arranged on both the left and right sides of the same plane, and a mesh / tuck area arranged in between.

[0031] The flat knitted section is composed of flat knitted loops 10, 10' and has a smooth surface, which comes into direct contact with the human skin and provides a strong cooling sensation.

[0032] On the other hand, the mesh / tuck section is formed by a tuck structure and a mesh structure, and has a plurality of ventilation holes formed therein.

[0033] This creates air flow passages 30a within the fabric, allowing air to flow laterally and efficiently expelling heat and moisture generated by the human body to the outside.

[0034] (Area arrangement in the plane direction) As shown in FIG. 4, the knitted fabric includes a plurality of first texture regions A and second texture regions B in the planar direction.

[0035] The first weave region A is a dense region mainly made of a plain knit weave, and provides good cool-to-touch performance.

[0036] The second texture region B is a region made of a mesh texture or a tuck texture, and has excellent breathability and heat dissipation properties.

[0037] These first and second texture regions A and B can be arranged alternately or in blocks within the fabric plane, allowing for an optimal distribution of cooling sensation and breathability depending on the intended use.

[0038] (Detailed structure of each organizational unit) As shown in FIG. 5, the plain knitted structure portion is formed by a plurality of loops that are regularly arranged in the longitudinal and transverse directions and intermesh with each other.

[0039] This results in a dense fabric structure with a smooth surface, which quickly conducts heat when it comes into contact with human skin, providing excellent cooling sensation.

[0040] As shown in FIG. 6, the jacquard mesh structure is formed by jacquard control, and the loops are arranged irregularly in the vertical and horizontal directions.

[0041] Because the horizontal connecting threads are arranged across multiple needle positions, numerous mesh-like pores are formed inside the fabric, allowing air and water vapor to flow freely, significantly improving breathability and heat dissipation performance.

[0042] (Cross-sectional structure) As shown in FIG. 7, the fabric has, in the thickness direction, a plain knitted structure portion 2 and gap portions 4 having pores.

[0043] The flat knitted structure portion 2 comes into contact with the human skin and quickly absorbs heat from the human body and releases it to the outside.

[0044] On the other hand, the gap portion 4 has a structure with multiple pores, allowing air to flow freely, effectively transporting the released heat and moisture, thereby achieving excellent breathability and heat dissipation performance.

[0045] Below is shown an example of a flat knitted cooling fabric that uses nylon as the main material and combines a plain knit structure and a tuck structure.

[0046] Knitting device: flat knitting machine Average basis weight: 170 g / m 2 Fiber composition: 85% nylon, 15% polyurethane Functional materials: All nylon fibers use functional yarn with phase change heat storage function. The instantaneous heat transfer rate when the fabric of the present invention was in contact with human skin was measured for the plain knit region of the fabric.

[0047] Measurement conditions Contact temperature difference Δt=20 ℃ Measurement results Q-max value = 0.538 W / cm 2 This value is the standard value for general cooling fabrics (Q-max ≧ 0.20 W / cm 2 ) is significantly higher than

[0048] These results confirmed that the use of highly thermally conductive fibers in combination with a smooth flat knit structure maximizes the contact area with the human body, resulting in an extremely high instantaneous cooling sensation (so-called super cooling sensation). [Explanation of symbols]

[0049] 10 Loops 10' Loop 11. Loop direction 20a Normal Loop 20b 3D loop structure 21 Tuck Loop 22 Ventilation hole structure 30a Air circulation passage A. First compartment tissue area B. Second compartment tissue area 2 Flat knitting section 3 Jacquard mesh weave section 4 Gap

Claims

1. A knitted fabric having cool durability and breathability, The knitted fabric is A flat knitted structure portion having a flat knitted structure; A jacquard mesh structure portion formed by a mesh structure or a tuck structure by jacquard control, The plain knitted structure portion and the jacquard mesh structure portion are arranged adjacent to each other or alternately within the same knitted fabric. A knitted fabric characterized by:

2. The knitted fabric contains 70% by mass or more of a highly thermally conductive material having a thermal conductivity of 0.2 W / (m ° C) or more, phase change heat storage fiber is used as all or part of the highly thermal conductive material, The plain knitted structure portion has a structure in which a plurality of loops are regularly arranged in the vertical and horizontal directions, The jacquard mesh structure has a plurality of ventilation holes formed by accumulating tuck loops or changing the loop arrangement.

2. The knitted fabric according to claim 1 .

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