Cool-feeling skin-friendly outdoor fabric and method for producing the same

Abstract

This invention discloses a cooling and skin-friendly outdoor fabric and its production method. The cooling and skin-friendly outdoor fabric is made of a blend of warp yarns and 50%-60% weft yarns. The warp yarns are formed of nylon fibers, and the weft yarns are formed of cooling lyocell. The cooling lyocell includes lyocell fibers, an anti-UV auxiliary agent, and a cooling agent. The anti-UV auxiliary agent is disposed on the surface layer of the lyocell fibers, and the cooling agent is disposed on the inner layer of the lyocell fibers. The cooling agent is chemically bonded to the hydroxyl groups of the lyocell fibers. The production method includes: preparing a cooling agent solution; immersing the lyocell fibers in the cooling agent solution; subjecting them to heat and pressure to form chemical bonds between the cooling agent and the hydroxyl groups of the lyocell fibers; then coating or dipping the surface layer of the lyocell fibers with the anti-UV auxiliary agent to form the cooling lyocell; pretreating the cooling lyocell and nylon fibers; and blending the pretreated nylon fibers and cooling lyocell on a loom to form the fabric. This improves the strength and cooling properties of the fabric.

Description

Technical Field

[0001] This invention relates to the field of clothing fabric technology, and in particular to a cool-feeling, skin-friendly outdoor fabric and its production method. Background Technology

[0002] Currently, the market demand for summer outdoor clothing and camping equipment is surging. Lyocell fiber is popular in the outdoor field due to its natural moisture absorption, breathability, and skin-friendliness, while nylon is popular due to its high strength, abrasion resistance, and washability. However, existing products have three major pain points: First, the cooling sensation is not lasting. Traditional cooling agents are mostly physical coatings, and the cooling value (Qmax) retention rate is less than 50% after 10 washes. Second, there is a functional conflict. After adding anti-UV and abrasion-resistant additives, the cooling performance decreases by 20%-30%. Summary of the Invention

[0003] In order to overcome the shortcomings of the prior art, one of the objectives of this invention is to provide a cool and skin-friendly outdoor fabric that can improve the strength and coolness of the fabric.

[0004] One of the objectives of this invention is achieved through the following technical solution: A cooling and skin-friendly outdoor fabric is made of a blend of warp yarns and 50%-60% weft yarns. The warp yarns are formed of nylon fibers, and the weft yarns are formed of cooling lyocell. The cooling lyocell includes lyocell fibers, UV-resistant additives, and cooling agents. The UV-resistant additives are disposed on the surface layer of the lyocell fibers, and the cooling agents are disposed on the inner layer of the lyocell fibers. The cooling agents include inorganic cooling agents and organic cooling agents, and the cooling agents are chemically bonded to the hydroxyl groups of the lyocell fibers.

[0005] Preferably, the nylon fiber accounts for 45% by mass, the cooling lyocell accounts for 55% by mass, and the ratio of the inorganic cooling agent to the organic cooling agent is 3:2.

[0006] Preferably, the inorganic cooling agent is nano-sized silica-based, the organic cooling agent is a modified menthol derivative, and the UV-resistant additive is nano-zinc oxide.

[0007] Preferably, the lyocell further includes a crosslinking agent, the crosslinking agent being trimethylolpropane trioxide, and the nylon fiber being a high-strength nylon fiber.

[0008] The second objective of this invention is achieved by the following technical solution: A method for producing the cool-feeling, skin-friendly outdoor fabric as claimed in the claims, comprising: Step A: Prepare a cooling agent solution, immerse the Lyocell fiber in the cooling agent solution, and maintain a high temperature and pressure for 30-300 minutes to allow the cooling agent to form chemical bonds with the hydroxyl groups of the Lyocell fiber; Step B: Take out the Lyocell fiber with the cooling agent, then apply or dip the surface of the Lyocell fiber with an anti-UV additive, and keep it dry for 10-100 minutes to form a cooling Lyocell. Step C: Pre-treat the cooling Lyocell and nylon fibers to remove impurities and short fibers, wherein the cooling Lyocell is pre-treated in warm water at 35℃-45℃; Step D: The pretreated nylon fiber and cool-feeling lyocell are blended on a loom, with the weight ratio of cool-feeling lyocell being 50%-60%, to form the cool-feeling skin-friendly outdoor fabric.

[0009] Furthermore, step E is included: the cool-feeling, skin-friendly outdoor fabric formed in step D is subjected to gradient temperature setting, and then tested.

[0010] Furthermore, in step A, when preparing the cooling agent solution, 0.6% of a crosslinking agent is added to allow the cooling agent to form chemical bonds with the hydroxyl groups of Lyocell fiber.

[0011] Furthermore, in step B, the product is dried at 35°C-40°C for 30-80 minutes.

[0012] Furthermore, the cooling Lyocell is pretreated in warm water at 40°C, the weft insertion force of the loom is no more than 2000N, and the input of the cooling Lyocell is controlled by a sensor.

[0013] Furthermore, in step E, the detection includes cooling sensation value detection and UV resistance detection; if the cooling sensation value Qmax≥0.36W / (m・K) and the UV resistance value UPF≥50+, then it is a qualified product.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: The cool-feeling and skin-friendly outdoor fabric disclosed in this application includes 40%-50% warp nylon fibers. These nylon fibers have high strength, which can improve the strength of the fabric. At the same time, the proportion of these nylon fibers is less than 50%, which can reduce roughness and improve skin-friendliness. This cool-feeling, skin-friendly outdoor fabric also includes cool-feeling lyocell weft yarns. This cool-feeling lyocell comprises lyocell fibers, UV-protective additives, and cooling agents. The UV-protective additives are disposed on the surface layer of the lyocell fibers, and the cooling agents are disposed on the inner layer of the lyocell fibers. The UV-protective additives and the cooling agents are separated and isolated without conflict, thus improving the coolness of the fabric. Furthermore, the cooling agents are chemically bonded to the hydroxyl groups of the lyocell fibers, making them less prone to detachment and maintaining the coolness for a long time. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the planar structure of the cool-feeling and skin-friendly outdoor fabric of the present invention; Figure 2 This is a three-dimensional structural diagram of the cooling Lyocell of the present invention; Figure 3 This is a flowchart of the production method of the cool-feeling and skin-friendly outdoor fabric of the present invention.

[0016] In the diagram: 10, warp yarn; 20, weft yarn; 21, lyocell fiber; 22, cooling agent; 23, UV protection agent. Detailed Implementation

[0017] To better understand the specific technical solutions, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] In the description of this invention, it should be noted that the terms "upper," "lower," "left," "right," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed during use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0019] like Figures 1-2 As shown, this application discloses a cool-feeling, skin-friendly outdoor fabric, which is made of a blend of warp yarn 10 and 50%-60% weft yarn 20. The warp yarn 10 is formed of nylon fiber; the weft yarn 20 is formed of cool-feeling lyocell. The cool-feeling lyocell includes lyocell fiber 21, a cooling agent 22, and an anti-ultraviolet agent 23. The anti-ultraviolet agent 23 is disposed on the surface layer of the lyocell fiber 21, and the cooling agent 22 is disposed on the inner layer of the lyocell fiber 21. The cooling agent 22 includes inorganic cooling agents and organic cooling agents, and the cooling agent 22 is chemically bonded to the hydroxyl groups of the lyocell fiber.

[0020] like Figure 2 As shown, this cool-feeling, skin-friendly outdoor fabric 100 includes 50%-60% weft yarn cool-feeling lyocell. The cool-feeling lyocell includes lyocell fiber 21, a cooling agent 22, and an anti-UV auxiliary agent 23. The anti-UV auxiliary agent 23 is disposed on the surface layer of the lyocell fiber 21, and the cooling agent 22 is disposed on the inner layer of the lyocell fiber 21. The anti-UV auxiliary agent 23 and the cooling agent 21 are disposed separately without conflict, which can improve the coolness of the fabric. Furthermore, the cooling agent 22 is chemically bonded to the hydroxyl groups of the lyocell fiber 21, and the cooling agent 22 is not easily washed off, thus enabling the fabric to maintain its coolness for a long time.

[0021] In addition, the cool-feeling and skin-friendly outdoor fabric disclosed in this application includes 40%-50% (calculated from the weft yarn content) of warp nylon fiber. This nylon fiber has high strength, which can improve the strength of the fabric. At the same time, the proportion of this nylon fiber is less than 50%, which can reduce the roughness and improve the skin-friendliness of the fabric.

[0022] The UV-resistant additive 23 reduces the heat generated by the fabric when exposed to outdoor (sunlight) ultraviolet light, thus increasing the cooling sensation. The cooling agent 22 is located in the inner layer of the fabric and is not easily decomposed by strong light and heat. The organic cooling agent is non-irritating and skin-friendly, while the inorganic cooling agent is compatible with the pore structure of lyocell fiber 21.

[0023] In a preferred embodiment, such as Figures 1-2 As shown, the nylon fiber accounts for 45%, the cooling lyocell accounts for 55%, and the ratio of the inorganic cooling agent to the organic cooling agent is 3:2. The inorganic cooling agent is nano-sized silica-based, the organic cooling agent is a modified menthol derivative, and the UV-protective agent 23 is nano-zinc oxide. The lyocell also includes a crosslinking agent, which is trimethylolpropane trioxide, and the nylon fiber is a high-strength nylon fiber.

[0024] In the above embodiments, the ratio of nylon fiber to the cooling lyocell is the optimal ratio (9:11) obtained by the inventors of this application through more than 200 experiments. At this ratio, the fabric exhibits the best strength, cooling sensation, and skin-friendliness. The nano-sized silica particles can reach a particle size of 50 nm, allowing them to penetrate into the pores of the lyocell fiber 21. The trimethylolpropane trioxide is a multi-hydroxyl crosslinking agent with good crosslinking properties, which can promote the chemical bonding of the cooling agent with the hydroxyl groups of the lyocell fiber 21, making the cooling agent more robust. The nano-zinc oxide has good compatibility, combining well with the lyocell fiber 21 and is also compatible with the cooling agent 22. The high-strength nylon fiber can be high-elastic nylon 66, which has a low elongation at break and high strength.

[0025] like Figure 3 As shown, the present invention also discloses a method for producing the aforementioned cool-feeling and skin-friendly outdoor fabric, comprising: Step A: Prepare a cooling agent solution, immerse the Lyocell fiber in the cooling agent solution, and maintain a high temperature and pressure for 30-300 minutes to allow the cooling agent to form chemical bonds with the hydroxyl groups of the Lyocell fiber; In step A, when preparing the cooling agent solution, 0.6% of a crosslinking agent is added. This crosslinking agent effectively enables the cooling agent to form chemical bonds with the hydroxyl groups of the lyocell fiber 21, thus ensuring the cooling agent adheres firmly to the lyocell fiber 21. It is understandable that high voltage, static electricity, and van der Waals forces can also promote the chemical bonding of hydroxyl groups.

[0026] Step B: Take out the Lyocell fiber 21 with the cooling agent, and then apply or dip the surface of the Lyocell fiber 21 with the UV protection agent 23, and keep it dry for 10 min-100 min to form a cooling Lyocell. In step B, the lyocell fibers coated with the UV-resistant agent 23 are dried at 35℃-40℃ for 30-80 minutes to ensure that the UV-resistant agent 23 adheres firmly to the surface of the lyocell fibers 21. Too high a temperature may cause the cooling agent to decompose, while too low a temperature is not conducive to drying; therefore, 35℃-40℃ is more suitable.

[0027] Step C: Pre-treat the cooling Lyocell and nylon fibers to remove impurities and short fibers, wherein the cooling Lyocell is pre-treated in warm water at 35℃-45℃; In step C, the cooling lyocell is pretreated (pre-wetted) in warm water at 40°C, which can improve its cohesion with nylon and reduce strength fluctuations caused by uneven blending.

[0028] Step D: The pretreated nylon fiber and cool-feeling lyocell are blended on a loom, with the weight ratio of cool-feeling lyocell being 50%-60%, to form the cool-feeling skin-friendly outdoor fabric.

[0029] In step D, to avoid fiber breakage, the weft insertion force of the loom is no greater than 2000N; to precisely control the input amount, the input amount of the cooling Lyocell can be controlled by a (mass) sensor. Furthermore, by delaying the opening time, the yarn can be fully stretched before interlacing, forming "micron-level cooling pores," thereby increasing the air permeability to 600mm / s. By pre-setting production parameters (time, weft insertion force, speed, etc.) for different outdoor fabric products in the existing loom control system, the parameters can be directly called when switching products, without repeated debugging, which can improve production efficiency.

[0030] The production method of this application also includes step E: gradient heating and shaping of the cool-feeling skin-friendly outdoor fabric formed in step D, followed by testing.

[0031] In step E, a "gradient temperature setting (100℃→120℃→140℃) and heat preservation (12 minutes) process" is adopted. First, the cooling agent and functional additives (UV-resistant additives and abrasion-resistant agents) are fully penetrated into the fiber pore structure (nylon and lyocell). Then, a cross-linking agent is used to fix them, ensuring that the cooling agent and functional additives adhere to the fiber for a long time. The testing includes cooling value testing and UV resistance testing; if the cooling value Qmax ≥ 0.36 W / (m・K) and the UV resistance value UPF ≥ 50+, it is a qualified product; otherwise, it is an unqualified product.

[0032] In summary, this application increases the strength and skin-friendliness of the fabric by using a suitable ratio of nylon fiber and lyocell fiber; and by ensuring the firm adhesion of the cooling agent to the lyocell fiber, and by separating the cooling agent from the UV-resistant additive, thereby reducing interference between the two, the cooling sensation of the outdoor fabric can be significantly and long-term improved, achieving a balance of "strength-skin-coolness" in the fabric.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A cool-feeling, skin-friendly outdoor fabric, characterized in that: It is made of a blend of warp yarns and 50%-60% weft yarns, wherein the warp yarns are formed of nylon fibers; the weft yarns are formed of cooling lyocell, wherein the cooling lyocell includes lyocell fibers, UV-resistant additives and cooling agents, wherein the UV-resistant additives are disposed on the surface layer of the lyocell fibers, and the cooling agents are disposed on the inner layer of the lyocell fibers, wherein the cooling agents include inorganic cooling agents and organic cooling agents, and the cooling agents are chemically bonded to the hydroxyl groups of the lyocell fibers.

2. The cool-feeling, skin-friendly outdoor fabric according to claim 1, characterized in that: The nylon fiber accounts for 45% of the mass, the cool-feeling lyocell accounts for 55% of the mass, and the ratio of the inorganic cool-feeling agent to the organic cool-feeling agent is 3:

2.

3. The cool-feeling, skin-friendly outdoor fabric according to claim 1, characterized in that: The inorganic cooling agent is nano-sized silica-based, the organic cooling agent is a modified menthol derivative, and the UV-resistant additive is nano-zinc oxide.

4. The cool-feeling, skin-friendly outdoor fabric according to claim 1, characterized in that: The lyocell also includes a crosslinking agent, which is trimethylolpropane trioxide, and the nylon fiber is a high-strength nylon fiber.

5. A method for producing a cool-feeling, skin-friendly outdoor fabric according to any one of claims 1-4, characterized in that, include: Step A: Prepare a cooling agent solution, immerse the Lyocell fiber in the cooling agent solution, and maintain a high temperature and pressure for 30-300 minutes to allow the cooling agent to form chemical bonds with the hydroxyl groups of the Lyocell fiber; Step B: Take out the Lyocell fiber with the cooling agent, then apply or dip the surface of the Lyocell fiber with an anti-UV additive, and keep it dry for 10-100 minutes to form a cooling Lyocell. Step C: Pre-treat the cooling Lyocell and nylon fibers to remove impurities and short fibers, wherein the cooling Lyocell is pre-treated in warm water at 35℃-45℃; Step D: The pretreated nylon fiber and cool-feeling lyocell are blended on a loom, with the weight ratio of cool-feeling lyocell being 50%-60%, to form the cool-feeling skin-friendly outdoor fabric.

6. The production method according to claim 5, characterized in that, It also includes step E: Gradual temperature setting of the cool-feeling, skin-friendly outdoor fabric formed in step D, followed by testing.

7. The production method according to claim 6, characterized in that, In step A, when preparing the cooling agent solution, 0.6% of a crosslinking agent is added to form a chemical bond between the cooling agent and the hydroxyl groups of Lyocell fiber.

8. The production method according to claim 7, characterized in that, In step B, the product is dried at 35℃-40℃ for 30-80 minutes.

9. The production method according to claim 8, characterized in that, The cool-feeling lyocell is pretreated in warm water at 40°C. The weft insertion force of the loom is no more than 2000N. The input of the cool-feeling lyocell is controlled by a sensor.

10. The production method according to claim 6, characterized in that, In step E, the testing includes cooling sensation test and UV resistance test; if the cooling sensation Qmax ≥ 0.36 W / (m・K) and the UV resistance UPF ≥ 50+, then it is a qualified product.

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