Yarn with temperature control function

Abstract

We offer a yarn with a pleasant feel against the skin, high moisture absorption, and temperature-regulating properties. [Solution] The temperature-regulating yarn comprises a phase-change filament 1 and a short fiber yarn 2 that covers the outer circumference of the phase-change filament 1 in a spiral shape. By covering the outer circumference of the core yarn made of the phase-change filament with the short fiber yarn, it is possible to suppress the core yarn made of the phase-change filament from coming into direct contact with the skin.

Description

Technical Field

[0001] The present invention relates to a yarn with a temperature control function.

Background Art

[0002] By using fibers containing a phase change material in temperature control yarns, a temperature control function can be realized. The phase change material undergoes a phase change within a specific temperature range, absorbs heat and stores it at high temperatures, and releases heat to maintain the temperature at low temperatures. With this function, temperature fluctuations can be alleviated, the temperature can be dynamically adjusted like a "micro air conditioner", and the comfort and environmental adaptability during use can be significantly improved.

[0003] There are mainly two types of existing temperature control yarns. The first type of temperature control yarn is a phase change filament directly obtained by adding a phase change material during the spinning process. Such a phase change filament is usually a synthetic fiber, has a low moisture absorption rate, is prone to generating static electricity, and has a poor touch compared to materials such as cotton, hemp, wool, and rayon. The second type of temperature control yarn is a fiber yarn obtained by further processing the phase change filament into short fiber yarns and blending them with other fibers. In such fiber yarns, the addition amount of the phase change fiber is limited and the heat storage amount is low, so the temperature control function is inferior. Also, in the processing process of the phase change short fiber yarn, the strength of the phase change filament is damaged, the strength of the yarn after spinning is low, there are many flyings, and pilling is likely to occur, which affects the comfort during use.

Summary of the Invention

Problems to be Solved by the Invention

[0004] In view of such circumstances, the present invention has been made, and an object thereof is to provide a yarn with a temperature control function that has a good touch and a high moisture absorption rate.

Means for Solving the Problems

[0005] According to an aspect of the present invention, a temperature-regulating yarn is provided, comprising a core yarn made of phase-change filaments and a sheath portion made of short fiber yarns that covers the outer circumference of the core yarn in a spiral shape.

[0006] Furthermore, in an embodiment of the present invention, the phase change filament is composed of one of the following: a phase change nylon filament, a phase change polyester filament, a phase change polyethylene filament, and a phase change polylactic acid filament.

[0007] Furthermore, in an embodiment of the present invention, the phase change filament has a fineness of 10D to 400D and a heat storage capacity of 20 J / g or more.

[0008] Furthermore, in an embodiment of the present invention, the short fiber yarn has a moisture absorption rate of 7% or more and is composed of one or more of the following: cotton, linen, silk, wool, rayon fiber, lyocell fiber, modal fiber, and cupro fiber.

[0009] Furthermore, in this embodiment of the present invention, the sheath portion covers the outer circumference of the core thread so as not to expose the core thread.

[0010] Furthermore, in this embodiment of the present invention, the mass content ratio of the phase-change filament 1 is 10% to 50%, and the mass content ratio of the short fiber yarn is 50% to 90%.

[0011] Furthermore, in an embodiment of the present invention, the temperature-regulating yarn is used in the manufacture of clothing or interior fabrics. [Effects of the Invention]

[0012] According to this embodiment, by covering the outer surface of the core yarn made of phase-change filaments with short fiber yarn, it is possible to suppress direct contact between the core yarn made of phase-change filaments and the skin, thereby providing a temperature-regulating yarn that is soft to the touch and has a high moisture absorption rate. [Brief explanation of the drawing]

[0013] [Figure 1] Figure 1 is a schematic diagram showing the structure of the temperature-regulating yarn according to this embodiment. Embodiments for implementing the invention

[0014] Hereinafter, embodiments of the present invention (hereinafter also referred to simply as "these embodiments") will be described with reference to the attached drawings. Throughout this specification, the same elements will be denoted by the same reference numerals.

[0015] (Structure of yarn with temperature control function) First, the structure of the temperature-regulating yarn according to this embodiment will be described with reference to Figure 1.

[0016] Figure 1 is a schematic diagram showing the structure of the temperature-regulating yarn according to this embodiment.

[0017] As shown in Figure 1, the temperature-regulating yarn according to this embodiment is used in the manufacture of clothing or interior fabrics and comprises a phase-change filament 1 as a core yarn and a short fiber yarn 2 as a sheath.

[0018] The phase change filament 1 is a filament that extends along the longitudinal direction. Furthermore, the phase change filament 1 has a substantially circular cross-section.

[0019] The phase change filament 1 has a temperature control function. Specifically, the phase change filament 1 has a bidirectional temperature control function. That is, the phase change filament 1 can achieve a bidirectional temperature control function by absorbing and storing heat when the temperature is high (i.e., when the temperature is higher than a predetermined temperature) to lower the temperature, and by releasing heat when the temperature is low (i.e., when the temperature is lower than a predetermined temperature) to raise the temperature.

[0020] Furthermore, the phase change filament 1 is composed of one of the following: phase change nylon filament, phase change polyester filament, phase change polyethylene filament, and phase change polylactic acid filament.

[0021] The phase change filament 1 preferably has a fineness of 10 D to 400 D and a heat storage capacity of 20 J / g or more. Further, the phase change filament 1 more preferably has a fineness of 40 D to 200 D and a heat storage capacity of 30 J / g or more.

[0022] The staple fiber yarn 2 has a high moisture absorption rate. Specifically, the staple fiber yarn 2 is composed of staple fibers having a moisture absorption rate (i.e., official moisture regain) of 7% or more. More specifically, the staple fiber yarn 2 is composed of one or more of cotton, hemp, silk, wool, rayon fiber, lyocell fiber, modal fiber, and cupra fiber.

[0023] Further, the staple fiber yarn 2 covers the outer peripheral side of the phase change filament 1 so as to be spiral. Specifically, the staple fiber yarn 2 covers the outer peripheral side of the phase change filament 1 so as not to expose the phase change filament 1. Thereby, the staple fiber yarn 2 with a high moisture absorption rate can directly contact the skin, and the direct contact of the phase change filament 1 with the skin can be suppressed, so that a yarn with a good touch and a temperature-regulating function with a high moisture absorption rate can be provided.

[0024] The spiral staple fiber yarn 2 is composed of a plurality of coils arranged along the longitudinal direction of the phase change filament 1. The plurality of coils are arranged such that adjacent coils are in close contact with each other. In other words, no gap is formed between adjacent coils.

[0025] The mass content ratio of the phase change filament 1 is 10% to 50%, and the mass content ratio of the short fiber yarn 2 is preferably 50% to 90%. In this way, both the temperature control function and a good touch can be achieved. Specifically, when the mass content ratio of the phase change filament 1 is less than 10%, the mass content ratio of the phase change filament 1 is too small to obtain the expected temperature control effect. On the other hand, when the mass content ratio of the phase change filament 1 exceeds 50%, the mass content ratio of the short fiber yarn 2 is too small, and the entire outer peripheral side of the phase change filament 1 cannot be covered, resulting in a poor touch. Further, the mass content ratio of the phase change filament 1 is more preferably 20% to 40%, and the mass content ratio of the short fiber yarn 2 is more preferably 60% to 80%.

[0026] Next, the differences between each example and each comparative example will be described by citing Examples 1 and 2 and Comparative Examples 1 and 2.

[0027] (Example 1) In Example 1, a phase change nylon fiber with a fineness of 50 D and a heat storage amount of 50 J / g was used as the phase change filament, and a cotton fiber yarn with a moisture absorption rate of 8.5% was used as the short fiber yarn to produce a yarn with a 32 count temperature control function. Here, the mass content ratio of the phase change nylon fiber is 30%, and the mass content ratio of the cotton fiber yarn is 70%. Then, a predetermined fabric was made using the yarn with the temperature control function.

[0028] (Comparative Example 1) In Comparative Example 1, a 32 count ordinary cotton yarn was produced using only a cotton fiber yarn with a moisture absorption rate of 8.5%. Then, using the ordinary cotton yarn, a fabric having the same tissue structure and unit mass as the fabric according to Example 1 was made.

[0029] (Comparison between Example 1 and Comparative Example 1) The fabric of Example 1 and the fabric of Comparative Example 1 were placed in a thermostatic and humid chamber, the temperature in the chamber was raised from 23°C to 37°C, and an experiment on the temperature change of both fabrics was conducted. According to the experimental results, in the heating process, the temperature of the fabric of Example 1 was always lower than the temperature of the fabric of Comparative Example 1, and the maximum temperature difference was 3.2°C.

[0030] Furthermore, a comparative experiment on contact cooling sensation (Q-Max) was conducted for the fabric of Example 1 and the fabric of Comparative Example 1. The experimental results showed that, under experimental conditions of △T=20℃, the Q-Max value of Example 1 was 0.351, while the Q-Max value of Comparative Example 1 was 0.2. Therefore, the contact cooling effect of Example 1 is significantly superior to that of Comparative Example 1. As a result, when the fabric of Example 1 is used in the summer, it can provide a noticeable cooling sensation to the user.

[0031] Furthermore, water absorption and quick-drying experiments were conducted on the fabric of Example 1 and the fabric of Comparative Example 1, and the water absorption capacity and water evaporation rate of both fabrics were measured. According to the experimental results, the water absorption time of Example 1 was 1 second, and the time to complete drying was 47 minutes, while the water absorption time of Comparative Example 2 was 1 second, and the time to complete drying was 75 minutes. Thus, the fabric of Example 1 has the same water absorption capacity as the fabric of Comparative Example 1, but its quick-drying properties are clearly superior to those of the fabric of Comparative Example 1.

[0032] (Example 2) In Example 2, a phase-change polyester filament with a fineness of 50D and a heat storage capacity of 40 J / g was used as the phase-change filament, and a lyocell fiber yarn with a moisture absorption rate of 13% was used as the short fiber yarn to produce a 40-count yarn with temperature-regulating properties. Here, the mass content ratio of the phase-change polyester filament was 38%, and the mass content ratio of the lyocell fiber yarn was 62%. A predetermined fabric was then made using this temperature-regulating yarn.

[0033] (Comparative Example 2) In Comparative Example 2, a 40-count mixed staple yarn was produced by blending polyester staple yarn and lyocell staple yarn. In this case, the mass content of polyester staple yarn was 38%, and the mass content of lyocell staple yarn was 62%. Using this mixed staple yarn, a fabric with the same structural integrity and unit mass as the fabric in Example 2 was prepared.

[0034] (Comparison between Example 2 and Comparative Example 2) The fabrics of Example 2 and Comparative Example 2 were placed in a constant temperature and humidity chamber, and the chamber temperature was lowered from 37°C to 5°C. A comparative experiment was conducted to compare the temperature decrease of both fabrics. The experimental results showed that, during the same time period, the temperature of the fabric of Example 2 was always higher than that of the fabric of Comparative Example 2. Therefore, the fabric of Example 2 effectively buffers temperature changes during temperature decrease, providing sustained warmth to the user.

[0035] Furthermore, antistatic experiments were conducted on the fabric of Example 2 and the fabric of Comparative Example 2. The experimental results showed that the antistatic properties of Example 2 were superior to those of Comparative Example 2. In addition, in Example 2, the lyocell fibers with high moisture absorption rate are coated on the outer surface of the phase-change polyester filament, allowing for more effective removal of static electricity. As a result, a pleasant feel can be provided to the user.

[0036] (Effects and Benefits) Next, the effects and advantages of this embodiment will be described.

[0037] The temperature-controlled yarn according to this embodiment comprises a phase-change filament 1 and a short fiber yarn 2 that covers the outer circumference of the phase-change filament 1 in a spiral shape.

[0038] Furthermore, in this embodiment, the phase change filament 1 is composed of one of the following: a phase change nylon filament, a phase change polyester filament, a phase change polyethylene filament, and a phase change polylactic acid filament.

[0039] Furthermore, in this embodiment, the phase change filament 1 has a fineness of 10D to 400D and a heat storage capacity of 20 J / g or more.

[0040] Furthermore, in this embodiment, the short fiber yarn 2 has a moisture absorption rate of 7% or more and is composed of one or more of the following: cotton, linen, silk, wool, rayon fiber, lyocell fiber, modal fiber, and cupro fiber.

[0041] Furthermore, in this embodiment, the temperature-regulating yarn is used in the manufacture of clothing or interior fabrics.

[0042] With these configurations, by covering the outer surface of the phase-change filament 1 with the short fiber yarn 2, it is possible to suppress direct contact between the phase-change filament 1 and the skin, thereby providing a temperature-regulating yarn that is soft to the touch and has a high moisture absorption rate.

[0043] Furthermore, in this embodiment, the short fiber yarn 2 covers the outer circumference of the phase change filament 1 so as not to expose it.

[0044] This configuration allows the short fiber yarn 2 with high moisture absorption to come into direct contact with the skin, while suppressing direct contact between the phase-change filament 1 and the skin. As a result, it is possible to provide a temperature-regulating yarn that is soft to the touch and has high moisture absorption.

[0045] Furthermore, in this embodiment, the mass content ratio of the phase-change filament 1 is 10% to 50%, and the mass content ratio of the short fiber yarn 2 is 50% to 90%.

[0046] This configuration makes it possible to achieve both temperature control and a pleasant feel against the skin.

[0047] Although this embodiment and its variations have been described above, the above-described embodiment and variations only represent a part of the application of the present invention, and are not intended to limit the technical scope of the present invention to the specific configurations of the above-described embodiment and variations. [Explanation of symbols]

[0048] 1. Phase change filament (core thread) 2. Short fiber yarn (sheath portion)

Claims

1. A core thread made of phase-change filaments, It comprises a sheath made of short fiber yarn, which is attached to the outer circumference of the core yarn in a spiral shape, Yarn with temperature control function.

2. The aforementioned phase-change filament is composed of one of the following: phase-change nylon filament, phase-change polyester filament, phase-change polyethylene filament, and phase-change polylactic acid filament. The temperature-regulating yarn according to claim 1.

3. The aforementioned phase-change filament has a fineness of 10D to 400D and a heat storage capacity of 20 J / g or more. The temperature-regulating yarn according to claim 1.

4. The aforementioned short fiber yarn has a moisture absorption rate of 7% or more and is composed of one or more of the following: cotton, linen, silk, wool, rayon fiber, lyocell fiber, modal fiber, and cupro fiber. The temperature-regulating yarn according to claim 1.

5. The sheath portion covers the outer circumference of the core thread so as not to expose the core thread. The temperature-regulating yarn according to claim 1.

6. The mass content ratio of the phase-change filament is 10% to 50%. The mass content ratio of the aforementioned short fiber yarn is 50% to 90%. The temperature-regulating yarn according to claim 1.

7. Used in the manufacture of clothing or interior fabrics, A yarn with a temperature control function according to any one of claims 1 to 6.

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