Cooling element worn by pet or human

Abstract

The invention relates to the technical field of cooling materials, in particular to a cooling element worn by pets or human beings, which comprises a skin-fitting fabric layer, a water-resisting layer, a water storage layer and an outer-layer fabric which are arranged in sequence, the skin-attaching fabric layer and the water-resisting layer are compounded into an inner layer in a dispensing mode, the water storage layer is independently arranged between the inner layer and the outer layer fabric in a clamped mode, and the outer layer fabric and the inner layer are welded through hot melt adhesive or ultrasonic waves. The cooling element has the beneficial effects that the cooling efficiency is highly positively correlated with the evaporation capacity in unit time, and in the cooling element worn by pets or human beings, the water storage layer is arranged to improve the evaporation efficiency, and cooling is performed to take away heat. Furthermore, a water-resisting layer is arranged between the skin-attaching fabric layer and the water storage layer, so that liquid water of the water storage layer is prevented from permeating into the skin or fur, and the skin and hair are prevented from being soaked.

Description

Technical Field

[0001] The present invention relates to the technical field of cooling materials, and particularly relates to a cooling element for pet or human wear. Background Art

[0002] Currently, common cooling garments mostly adopt the structure of "quick-drying fabric + water storage felt + quick-drying fabric". Although this structure can take away some heat through evaporative cooling, there are problems such as weak air permeability, skin wetness, and low evaporation efficiency. Representative products such as Dutch Suitical and German Canicool have the advantage that their closed structures can prevent liquid water from contacting pet hair and improve dryness. However, they both use diffusion moisture-permeable fabrics and do not have the ability to truly permeate water vapor, resulting in blocked evaporation and limited cooling power, and cannot meet the user's demand for high cooling efficiency.

[0003] The Chinese invention patent with the application number 201811444841.6 discloses a bionic cooling fabric, which includes a skin-friendly layer, a water storage layer, and an evaporation layer; the surface densities of the three are 150 - 300 gsm, 200 - 800 gsm, and 150 - 300 gsm respectively. Its skin-friendly layer is made of a material with a cold-sensing and moisture-absorbing function, having excellent water absorption and diffusibility, and being able to quickly diffuse body heat and accelerate the dissipation of sweat. Its water storage layer has the functions of high-efficiency water absorption and water locking, and can store a large amount of external water and sweat excreted by the human body to provide the water required for evaporative cooling, which is equivalent to adding a layer of skin with adjustable temperature to the human body, thus achieving the effect of long-term cold preservation. However, in the above technical solution, the diffusion of water in the dense water storage layer is blocked, and it is easy for liquid water to reverse osmose into the skin-friendly layer during compression or movement, causing a wet feeling on the skin and being not conducive to improving the evaporation efficiency. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: to provide a cooling element for pet or human wear that can ensure the evaporation efficiency while preventing the liquid water in the water storage layer from penetrating into the skin or fur.

[0005] To solve the above technical problem, the technical solution adopted by the present invention is: to provide a cooling element for pet or human wear, including, in sequence: a skin-friendly fabric layer, a water-proof layer, a water storage layer, and an outer fabric;

[0006] The skin-friendly fabric layer, the water-proof layer, and the water storage layer are compounded into one by dot gluing, and the outer fabric is encapsulated as a whole with other layers by hot melt adhesive or ultrasonic welding.

[0007] Another technical solution provided by the present invention is: to provide a cooling element for pet or human wear, characterized by including, in sequence: a skin-friendly fabric layer, a water-proof layer, a water storage layer, and an outer fabric;

[0008] The skin-friendly fabric layer, the water-proof layer and the water storage layer are compounded into one by means of dot bonding, and the outer fabric and other layers are encapsulated as a whole by hot melt adhesive or ultrasonic welding.

[0009] The beneficial effects of the present invention are as follows: the cooling efficiency is highly positively correlated with the evaporation amount per unit time. In the cooling element for pet or human wear of the present application, a water storage layer is provided to improve the evaporation efficiency, and the heat is taken away by cooling. Further, the present invention also provides a water-proof layer between the skin-friendly fabric layer and the water storage layer to prevent the liquid water in the water storage layer from penetrating into the skin or fur and avoid wetting the skin and hair. The cooling element of the present invention is suitable for pet wear and also suitable for human high-temperature environment operation scenarios, including but not limited to internal wear in open-air or high-heat load occupational scenarios such as construction workers, couriers, cyclists, medical staff, etc. Description of the Drawings

[0010] Figure 1 It is a schematic structural diagram of the cooling element for pet or human wear in Embodiment 1 of the specific embodiment of the present invention;

[0011] Figure 2 It is a schematic structural diagram of the cooling element for pet or human wear in Embodiment 2 of the specific embodiment of the present invention;

[0012] Figure 3 It is a schematic structural diagram of the cooling element for pet or human wear in Embodiment 4 of the specific embodiment of the present invention;

[0013] Figure 4 It is a schematic structural diagram of the cooling element for pet or human wear in Embodiment 6 of the specific embodiment of the present invention;

[0014] Label Description:

[0015] 1, skin-friendly fabric layer; 2, water-proof layer 3, water storage layer; 4, outer fabric;

[0016] 51, first polyester; 52, first ePTFE membrane; 53 needle-punched cotton; 54, first nylon; 55, first radiative cooling coating;

[0017] 61, second polyester; 62, second ePTFE membrane; 63, second felt; 62, second ePTFE membrane; 64, second nylon; 65, radiative cooling coating; 66, USB charging small fan; 67, magic tape;

[0018] 71, inner fabric; 72, edge fabric; 73, water injection and drainage port. Detailed Embodiments

[0019] To describe the technical content, achieved objectives and effects of the present invention in detail, the following is described in conjunction with the embodiments and with reference to the accompanying drawings.

[0020] The present invention provides a cooling element for pets or humans to wear, including, arranged in sequence: a skin-attached fabric layer, a water-proof layer, a water storage layer and an outer fabric;

[0021] The skin-attached fabric layer and the water-proof layer are compounded into an inner layer by means of dotting glue, the water storage layer is independently clamped between the inner layer and the outer fabric, and the outer fabric and the inner layer are welded by hot melt adhesive or ultrasonic wave.

[0022] The beneficial effect of the present invention is that the cooling efficiency is highly positively correlated with the evaporation amount per unit time. In the cooling element for pets or humans to wear in this application, a water storage layer is provided to improve the evaporation efficiency and cool away heat. Further, the present invention also provides a water-proof layer between the skin-attached fabric layer and the water storage layer to prevent the liquid water in the water storage layer from penetrating to the skin or fur and avoid wetting the skin and hair.

[0023] Preferably, in the above cooling element, the water-proof layer is an ePTFE film, an ePE film, a PU film or a TPU film, and the hydrostatic pressure of the water-proof layer ≥ 5000mmH2O.

[0024] Preferably, in the above cooling element, the material of the water storage layer is needle-punched cotton, non-woven fabric, cotton cloth or polar fleece, the gram weight of the water storage layer is 50-300g / m 2 , and the thickness of the water storage layer is 1-20mm.

[0025] Preferably, in the above cooling element, the outer fabric is a polyester or nylon fabric treated with DWR (Durable Water Repellent, DWR, durable water repellent treatment), or a functional fabric with an ePTFE film or an ePE film compounded on the side facing the water storage layer.

[0026] The function of the above setting is: the above setting of the outer fabric can prevent water from flowing out and penetrating to the skin or fur, while avoiding affecting the escape of steam.

[0027] Preferably, in the above cooling element, a radiative cooling coating is provided on the outer surface of the outer fabric, and the thickness of the radiative cooling coating is 2μm - 40μm.

[0028] The radiative particles are one or more of nano-scale silica, silicon carbide, titanium dioxide, calcium carbonate, barium sulfate, silicon nitride, zinc oxide, aluminum oxide, iron oxide, zirconium dioxide or jade powder, the particle size of the radiative particles is controlled within 0.2 - 4μm, and the content per square meter is 2g - 60g.

[0029] The function of the above settings is as follows: A fabric that resists liquid water (such as a DWR-treated fabric or a fabric laminated with an ePTFE membrane) is used as the coating substrate, which avoids the accumulation of liquid water on the outer surface of the outer fabric by passing through the outer fabric, significantly improving the infrared radiation efficiency and continuous performance of the radiative cooling coating. As a result, the evaporation heat dissipation and far-infrared cooling mechanisms are synergistically maximized to form a complete cooling system.

[0030] Preferably, in the above cooling element, the outer fabric includes an edge fabric and an inner fabric;

[0031] The inner fabric is a DWR-treated polyester or nylon fabric, and a radiative cooling coating is provided on the outer surface of the inner fabric. The edge fabric is a functional fabric laminated with an ePTFE membrane or an ePE membrane on the side facing the water storage layer.

[0032] Preferably, in the above cooling element, a waterproof zipper is provided on the outer fabric, and a mesh pocket is sewn on one or both sides of the waterproof zipper, and a USB charging small fan is embedded in the mesh pocket.

[0033] The function of the above settings is as follows: The present invention further sews mesh small pockets on both sides of the waterproof zipper of the outer fabric for embedding a USB charging small fan. When the small fan works, it can quickly circulate the air between the outer layer and the intermediate water storage layer and accelerate the evaporation of the water in the evaporation layer, thereby significantly enhancing the overall evaporation heat dissipation efficiency. By combining active air supply and passive evaporation, the surface temperature of the skin-friendly fabric layer is further reduced, achieving a faster and more lasting cooling effect and overcoming the problem of insufficient heat dissipation efficiency of pure passive evaporation in a static environment.

[0034] Preferably, in the above cooling element, the outer fabric is provided with an opening. Between the opening and the water storage layer, there are a fan installation cavity and a water injection channel. In the fan installation cavity, the inner wall of the fan installation cavity fixes an electric fan through a detachable mechanism; the water injection channel is used to inject water into the intermediate water storage layer. The inner wall of the fan installation cavity fixes a USB charging small fan through Velcro; the opening is closed through Velcro.

[0035] The function of the above settings is as follows: To increase the way of evaporation heat dissipation, that is, to add a USB small electric fan to pressurize the inside of the cooling element so that the water vapor inside can better escape from the cooling element.

[0036] Preferably, in the above cooling element, at least one opening element is provided on the side of the outer fabric facing the water storage layer. The opening element is used to inject water into the water storage layer or drain excess liquid water. The opening element is any one or a combination of the following: a waterproof zipper, a plastic or silicone water injection / drainage port, and a sewn Velcro.

[0037] The present invention also provides a cooling element for pets or humans to wear, including, sequentially arranged: a skin-friendly fabric layer, a water-proof layer, a water storage layer, and an outer fabric;

[0038] The skin-friendly fabric layer, the water-proof layer, and the water storage layer are compounded into one body by means of dotting glue, and the outer fabric and other layers are encapsulated into a whole by hot melt adhesive or ultrasonic welding.

[0039] The beneficial effects of the above-mentioned cooling element are as follows: the skin-friendly fabric layer can have a water-proof function (for example, polyester or nylon fabric treated with DWR can prevent at least 20 mm of water column from leaking without setting a water-proof layer), the water storage layer exists independently and is not compounded with other layers, the outer fabric is polyester or nylon treated with DWR, or a functional fabric compounded with ePTFE film / ePE film; the overall structure can be configured with a waterproof zipper for convenient water injection and ventilation adjustment; the outermost surface can also be coated with a radiative cooling coating to enhance the overall cooling capacity by reflecting solar radiation and enhancing far-infrared heat dissipation. Compared with the cooling element provided with a water-proof layer, the above-mentioned cooling element of this structure has the lowest cost.

[0040] The key technical concept of the present invention lies in that the cooling efficiency is highly positively correlated with the evaporation amount per unit time. Moreover, users are concerned about whether the skin or hair will be wetted, so it is necessary to increase the evaporation speed while suppressing water leakage. In addition, based on the first principle, the present invention also proposes a thermodynamic relationship: the body surface temperature of the user ≈ refrigeration efficiency - heating efficiency. To effectively cool down:

[0041] It should be enhanced: 1) evaporative heat dissipation, 2) infrared radiation, 3) air convection;

[0042] And suppressed: 1) solar radiation heat absorption, 2) environmental heat conduction, 3) infrared albedo.

[0043] Therefore, in the material selection of the structure of the present invention, a radiative cooling coating is introduced to increase the infrared emissivity and reduce solar absorption, and cooperate with the high-efficiency evaporation structure to achieve the combination of active + passive cooling.

[0044] The structural design of the present invention also fully considers the "failure mechanism" problem of radiative cooling materials in practical applications. In the prior art, the radiative cooling coating is often located at the water evaporation interface, and a liquid water film is easily formed on its surface during use, and the water film has strong absorption characteristics in the infrared band (especially the 8-14 micron atmospheric window), thus significantly weakening its heat dissipation function.

[0045] The present invention uses an outer fabric layer resistant to liquid water (such as DWR fabric or fabric with a composite ePTFE membrane) as the coating substrate, and is combined with a structural arrangement of a water storage layer that stores water in the internal intermediate layer, effectively avoiding the accumulation of liquid water on the outer surface, significantly improving the infrared radiation efficiency and persistence performance of the radiative cooling coating, so that the evaporation heat dissipation and far-infrared cooling mechanisms can be synergistically maximized to form a complete cooling system.

[0046] Parameter settings of each layer of material in the present invention:

[0047] 1. Skin-friendly fabric layer

[0048] It can be selected from polyester, nylon or their blended fabrics.

[0049] 2. Parameters of the water barrier film in the water barrier layer

[0050] The water barrier layer is preferably an ePTFE membrane or an ePE membrane, with a micropore diameter of 0.1 - 2 μm, a hydrostatic pressure ≥ 10000 mmH2O, and a vapor transmission rate (GB / T12704.1 upright cup method) ≥ 7000 g / m 2 ·24h, which can achieve rapid water vapor permeation while not leaking liquid water; if TPU, PU or PE membranes are selected, the moisture permeability rate does not exceed 5000 g / m 2 ·24h, which is only an optional implementation scheme. The cooling efficiency is not as good as that of the ePTFE membrane or the ePE membrane.

[0051] The water barrier layer can also be a polyester or nylon fabric treated with DWR: the hydrostatic pressure of the water barrier layer ≥ 30 mmH2O, and the vapor transmission rate (upright cup method) ≥ 5000 g / m 2 ·24h.

[0052] DWR-treated polyester or nylon can repel water to a small extent, but cannot achieve long-term water repellency. Because after the woven T400 fabric is treated with ordinary C6 / C0 DWR, the water column pressure is generally 20 - 50 mm (0.2 - 0.5 kPa). When the felt water storage layer is pressed by a dog or a person's body, a local pressure of more than 1 kPa can be generated, and the water is directly squeezed out. Once the fabric surface is immersed in liquid water, the surface tension barrier of DWR is damaged, and the fabric pores quickly absorb water, forming continuous leakage. Continuous leakage or surface wetness will make users perceive water leakage and then worry about the effectiveness of the product. The above are the disadvantages. The advantages are that the fabric treated with DWR has good air permeability, and the cost is only 1 / 3 of that of the ePTFE membrane.

[0053] 3. Parameters of the water storage layer

[0054] The water storage layer is selected from needled cotton, non-woven fabric, or other fibrous water-absorbing materials, with a gram weight range of 50 - 300 g / m 2; Among them, fabrics with medium water storage capacity such as cotton cloth and polar fleece can also be selected as the composite water-absorbing layer to improve the balance between water storage and wearing feel.

[0055] The thickness of the water storage layer is 1–20 mm, which can be adjusted according to the usage scenario, providing a larger water storage capacity and evaporation potential compared with the traditional structure.

[0056] 4. Outer fabric

[0057] The outer material is selected from the following two categories:

[0058] Functional fabrics with composite ePTFE film or ePE film, hydrostatic pressure ≥ 10000 mmH2O, vapor transmission rate (positive cup method of GB / T 12704.1) ≥ 7000 g / m 2 ·24 h;

[0059] Polyester or nylon fabrics treated with DWR, hydrostatic pressure ≥ 30 mmH2O, vapor transmission rate (positive cup method of GB / T 12704.1) ≥ 10000 g / m 2 ·24 h; The water repellency grade of the DWR-treated fabric preferably reaches the 90th grade or above in the AATCC 22 standard, with a hydrophobic property of liquid droplet contact angle ≥ 110°, preventing liquid water from penetrating from the water storage layer to the outside of the clothing.

[0060] 5. Radiative cooling coating

[0061] The radiative cooling coating is composed of a matrix resin with high emissivity (such as polyurethane) and radiative particles. The matrix resin is a microporous resin matrix, the pore diameter can be 0.01 μm - 15 μm, and the pore density is about 1.5×10 per cm 2 , through these micropores, sufficient gas and water vapor channels can be realized to ensure the air permeability and moisture permeability of the fabric. The thickness of the radiative cooling coating is 2 μm–40 μm. Materials such as nanoscale silica, calcium carbonate, and barium sulfate are selected as functional particles, the particle size is controlled at 0.2–4 μm, and the content per square meter is preferably 2 g–60 g. The coating emissivity ≥ 0.9, the solar reflectance R ≥ 0.85, covering the atmospheric window (8–13 μm) band to enhance infrared heat dissipation and avoid absorbing heat at high temperatures. In addition, the structure of the present invention avoids the formation of a continuous film of liquid water on its surface, significantly retaining the performance advantages of the radiative cooling layer.

[0062] The microporous design of the matrix resin of this application can meet the air permeability and evaporation requirements, avoiding the setting of through-holes or drilled holes in the radiative cooling coating. Avoiding macroscopic through-holes will not only damage the coating integrity, but may also cause the shedding of cold particles, reduce the reflectivity or affect the coating wear resistance.

[0063] The outer fabric layer including the radiative cooling coating of the present application may select the breathable and cooling woven fabric with the publication number CN113997673B and the name of "Breathable and Cooling Woven Fabric and Its Preparation Method".

[0064] 6. Glue - dotting composite process

[0065] The skin - friendly fabric layer, the water - proof layer and the water - storage layer of the present invention are composite by the hot - melt adhesive glue - dotting process. The glue used can be polyester - type or polyamide - type hot - melt adhesive, and the specific type is not limited. The glue - dotting spacing is preferably 5 - 20 mm, the diameter of the glue - dotting point is 1 - 2 mm, and the arrangement mode can be linear or grid - shaped to ensure the stability of the composite structure and take into account the uniformity of the air - permeable channels.

[0066] 7. Waterproof performance

[0067] The side water - proof film of the skin - friendly fabric layer is required to have a hydrostatic pressure performance of ≥10000 mmH2O;

[0068] The outer fabric needs to have the ability to prevent the liquid in the water - storage layer from leaking. The design standard is anti - leakage ≥20 mm water column (corresponding to the maximum thickness of the water - storage layer).

[0069] 8. Moisture permeability

[0070] The moisture - permeable performance of the water - proof film needs to meet the ISO 15496 standard, and preferably the moisture - permeation amount ≥10000 g / m 2 ·24 h (for ePTFE / ePE film); The moisture - permeation amount of the DWR - treated fabric can reach 8000 - 10000 g / m 2 ·24 h.

[0071] Example 1

[0072] Please refer to Figure 1 , a cooling element for pet or human wearing, including, sequentially arranged: a skin - friendly fabric layer 1, a water - proof layer 2, a water - storage layer 3 and an outer fabric layer 4;

[0073] The skin - friendly fabric layer 1, the water - proof layer 2 and the water - storage layer 3 are composite into one body by the glue - dotting method to form an overall inner - layer structure. The outer fabric and the inner - layer structure are encapsulated into a whole by hot - melt adhesive or ultrasonic welding.

[0074] The skin - friendly fabric layer is selected from polyester, nylon or their blended fabrics.

[0075] The water - proof layer is a water - proof film, the micropore diameter of the water - proof film is 0.2 μm, and the moisture - permeation rate per unit area is greater than 10000 g / m 2 ·24 h. The water - proof film is an ePTFE film.

[0076] The material of the water - storage layer is needle - punched cotton, and the gram weight of the water - storage layer is 50 - 300 g / m2 , the thickness of the water storage layer is 1 mm; the outer fabric is polyester.

[0077] The outer fabric is a polyester or nylon fabric treated with DWR.

[0078] The cooling element can be equipped with a waterproof zipper water injection port at the central position, or alternatively, a pull-out small cover, a silicone seal plug, etc. are provided to meet the functional requirements of repeated water injection and evaporation capacity adjustment.

[0079] The water injection port can also be opened and closed with Velcro or other methods as long as it can meet the water addition requirement. If the opening is at a high position, such as on the back of a dog or on the shoulder of a human, then its sealing performance does not need to be particularly good because liquid water flows downward.

[0080] Embodiment 2

[0081] A cooling element for pet or human wearing, including in sequence: a skin-friendly fabric layer, a water barrier layer, a water storage layer and an outer fabric;

[0082] The skin-friendly fabric layer, the water barrier layer and the water storage layer are compounded into one body by means of dotting to form an integral inner layer structure. The outer fabric and the inner layer structure are encapsulated into a whole by hot melt adhesive or ultrasonic welding.

[0083] The skin-friendly fabric layer is selected from polyester, nylon or their blended fabrics.

[0084] The water barrier layer is a water barrier film, the micropore diameter of the water barrier film is 0.5 μm, and the moisture permeability per unit area is greater than 10000 g / m 2 ·24 h. The water barrier film is an ePTFE film or an ePE film.

[0085] The material of the water storage layer is needle-punched cotton, non-woven fabric, cotton cloth or polar fleece, and the gram weight of the water storage layer is 100 g / m 2 , the thickness of the water storage layer is 15 mm

[0086] The outer fabric is a polyester or nylon fabric, which is a functional fabric with an ePTFE film or an ePE film compounded on the side facing the water storage layer.

[0087] The overall structure of the cooling element can be configured with a waterproof zipper or Velcro for convenient water injection and ventilation adjustment; the outermost surface can also be coated with a radiative cooling coating to enhance the overall cooling capacity by reflecting solar radiation and enhancing far-infrared heat dissipation.

[0088] A radiative cooling coating is provided on the outer surface of the outer fabric, and the thickness of the radiative cooling coating is 4 μm.

[0089] The radiation cooling coating is composed of a high emissivity matrix resin and radiation particles compounded together. The radiation particles are nanoscale silica, with a particle size controlled at 0.5 μm and a content of 30 g per square meter.

[0090] Please refer to Figure 2 , preferably, the above-mentioned cooling element for pet or human wear includes, arranged in sequence: a first polyester 51, a first ePTFE film 52, needle-punched cotton 53, a first ePTFE film 52, a first nylon 54, and a first radiation cooling coating 55.

[0091] Example 3

[0092] A cooling element for pet or human wear includes, arranged in sequence: a skin-friendly fabric layer, a water-proof layer, a water storage layer, and an outer fabric layer;

[0093] The skin-friendly fabric layer and the water-proof layer are compounded into an inner layer by means of dotting glue. The water storage layer is independently clamped between the inner layer and the outer fabric layer, and the outer fabric layer and the inner layer are welded by hot melt adhesive or ultrasonic wave.

[0094] The material of the water storage layer is needle-punched cotton, non-woven fabric, cotton cloth or polar fleece, with a gram weight of 300 g / m 2 , and the thickness of the water storage layer is 20 mm

[0095] The water storage layer is independently arranged and clamped between the composite inner layer and the outer fabric layer, with the characteristics of short evaporation path and high efficiency. (The cooling element has a lower cost and a lower threshold compared with the cooling element in which the water storage layer is not independently arranged).

[0096] The skin-friendly fabric layer is a functional fabric with a composite ePTFE film, with a hydrostatic pressure ≥ 10000 mmH2O and a vapor transmission rate (GB / T 12704.1 upright cup method) ≥ 7000 g / m 2 ·24 h;

[0097] The outer fabric layer is a polyester treated with DWR, with a hydrostatic pressure ≥ 30 mmH2O and a vapor transmission rate (GB / T 12704.1 upright cup method) ≥ 10000 g / m 2 ·24 h;

[0098] The skin-friendly fabric layer and the outer fabric layer are thermally bonded and laminated into a "bag-shaped" cavity structure by means of hot melt adhesive dotting or ultrasonic wave welding process at their peripheral edges. The water storage layer is placed inside the cavity and prevented from relative displacement by means of gluing or other fixing devices. The thermal bonding adhesive between the skin-friendly fabric layer and the outer fabric layer uses polyester type or polyamide type hot melt adhesive dotting.

[0099] A waterproof zipper is arranged on the outer fabric layer for water injection and ventilation.

[0100] Example 4

[0101] Please refer to Figure 3 , a cooling element for pets or humans to wear, including successively arranged: a skin-friendly fabric layer, a water-proof layer, a water storage layer and an outer fabric; specifically including successively: a second polyester 61, a second ePTFE film 62, a second felt 63, a second ePTFE film 62, a second nylon 64, and a second radiative cooling coating 65.

[0102] The outer fabric is provided with an opening, and between the opening and the water storage layer include: a fan installation cavity and a water injection channel, and the water injection channel is used to inject water into the middle water storage layer.

[0103] The inner wall of the fan installation cavity is fixed with a USB rechargeable small fan 66 through Velcro; the opening is closed through Velcro 67.

[0104] Example 5

[0105] A cooling element for pets or humans to wear, including each layer arranged successively as shown in Table 1.

[0106] Table 1

[0107]

[0108]

[0109] Example 6

[0110] On pets, if the outer fabric uses DWR instead of the water-proof membrane method, it will cause water leakage. The water leakage phenomenon usually concentrates in the positions with lower levels or edges.

[0111] Therefore, this embodiment provides an improvement to the outer fabric on the basis of the above embodiments. The outer fabric includes an edge fabric and an inner fabric; the inner fabric is a polyester or nylon fabric treated with DWR, and a radiative cooling coating is provided on the outer surface of the inner fabric. The edge fabric is a functional fabric with an ePTFE film or ePE film compounded on the side facing the water storage layer.

[0112] Specifically, please refer to Figure 4 , a cooling element for pets or humans to wear, including a water storage layer 3 and an outer fabric on its outer surface. The outer fabric includes an inner fabric 71 and an edge fabric 72. The inner fabric is polyester treated with DWR, and a radiative cooling coating is provided on the outer surface of the inner fabric. The edge fabric is a functional fabric with an ePTFE film compounded on the side facing the water storage layer. The outer fabric is also provided with a water injection and drainage port 73, which can be an opening prepared by a waterproof zipper or Velcro, and its position is not limited. Preferably, it is set at the edge of the outer fabric to facilitate the discharge of excess water.

[0113] Advantages of the improved outer fabric above: Combining the waterproof advantages of the waterproof membrane and the high moisture permeability and vapor permeability characteristics of DWR, and the fact that the highest part receives the most solar radiation, the present embodiment innovatively proposes the above implementation method that combines various advantages. The above outer fabric sacrifices part of its water tightness and obtains higher moisture permeability. Compared with other embodiments, it can better adapt to direct sunlight during the day and shows better performance in specific application scenarios.

[0114] Experimental Example

[0115] Experimental Record 1

[0116] Experimental method: At room temperature of 30.6 °C, take a sample with a size of 10 cm × 10 cm, seal it on a 9 cm × 9 cm water-absorbing needle-punched cotton sample containing water with transparent tape, let it stand for 1 hour, and record the weight change of the water-absorbing needle-punched cotton and the surface temperature of the sample. Sample 2: Waterproof 15000 mmH2O, moisture permeability 10000 g / m 2 ·24 h; Sample 3: Waterproof 15000 mmH2O, moisture permeability 7000 g / m 2 ·24 h; Sample 4: Waterproof 15000 mmH2O, moisture permeability 7000 g / m 2 ·24 h;

[0117] The specific data is shown in Table 2.

[0118] Table 2

[0119]

[0120] Result analysis:

[0121] Compared with the Canicool control (mass evaporation 0.52 g, surface temperature 26.40 °C), the mass evaporation of the three self-made composite samples is larger (0.68 - 0.74 g), and the corresponding equilibrium surface temperature is lower (25.10 - 25.30 °C), indicating that the evaporation heat dissipation performance is significantly improved.

[0122] Among them, the single ePTFE membrane (Sample 2) has the highest evaporation rate (0.74 g), while the nylon composite ePTFE (Sample 3) has the lowest equilibrium temperature (25.10 °C).

[0123] The DWR-treated composite sample (Sample 4) has both a high evaporation rate (0.70 g) and excellent waterproof performance, and shows excellent comprehensive performance.

[0124] The above data supports:

[0125] The ePTFE / nylon composite structure is superior to commercially available products in improving the evaporation cooling efficiency;

[0126] Although the DWR treatment slightly reduces the evaporation rate, it can significantly enhance the water repellency performance, making it an optimal choice for a trade-off.

[0127] Experimental Record 2

[0128] At room temperature of 25°C, take a sample with dimensions of 10 cm × 10 cm, seal it on a 9 cm × 9 cm water-absorbent needle-punched cotton sample containing water with transparent tape, let it stand for 1 hour, and record the weight change of the water-absorbent needle-punched cotton and the surface temperature of the sample. Sample 1: Waterproof 15000 mmH2O, moisture permeability 10000 g / m 2 ·24 h; The specific data is shown in Table 3 below.

[0129] Table 3

[0130]

[0131] Result Analysis

[0132] Comparison of evaporation rate: The evaporation rate of Sample 1 is the largest (1.28 g), about 2.5 times that of Canicool, indicating that the ePTFE film composite coating fabric far exceeds the commercially available control samples in terms of evaporation and heat dissipation ability.

[0133] Surface Temperature Drop

[0134] The final temperature of Sample 1 is the lowest, only 21.1°C, with a drop of 3.2°C compared to the ambient temperature (24.3°C), showing the best cooling effect.

[0135] The final temperature of the Canicool control sample is 23.5°C, with a drop of only 0.8°C; the final temperature of Sample 3 is 22.5°C, with a drop of 1.8°C.

[0136] Comprehensive Evaluation

[0137] Sample 1 (ePTFE film composite fabric 1) has the best performance and is suitable as an efficient evaporation and heat dissipation middle or outer layer fabric.

[0138] The evaporation rate and cooling effect of the Canicool control sample are both inferior to the structure of the present invention, verifying the significant advantages of the multi-layer composite structure of the present invention.

[0139] Experimental Record 3: Moisture Permeability Performance Test by the Cup Method

[0140] Test conditions: Fabric sample area: 25 cm 2 ; Test method: GB / T 12704.1 (cup method); Ambient temperature: Inside the room temperature cabinet (≈23°C); Test duration: 24 h; Record items: Initial weight, weight after 24 h; Coated fabric with composite ePTFE film: Waterproof 15000 mmH2O, moisture permeability 7000 g / m 2 ·24 h; Coated fabric with DWR treatment:: Waterproof 50 mmH2O, moisture permeability 7000 g / m2 · 24 h; the specific data are shown in Table 4 below.

[0141] Table 4

[0142]

[0143] The moisture permeability is significantly improved: the 24-hour weight losses of the composite ePTFE membrane fabric and the DWR-treated fabric reach 0.60 g and 0.62 g respectively, which are about 3 times that of the Canicool commercial fabric (0.21 g), indicating that both have a moisture permeability far exceeding that of the commercially available comparison samples.

[0144] Meet the requirements of efficient evaporative cooling: the experimental results fully prove that the composite ePTFE membrane fabric and the DWR-treated fabric used in the present invention can significantly improve the evaporation rate in terms of moisture permeability, which helps to improve the evaporation heat dissipation capacity per unit time of the cooling element, meeting the original design intention of efficient evaporative cooling.

[0145] In summary, the cup method moisture permeability test this time verifies the advantages of the developed fabric in evaporative cooling applications, providing an important experimental basis for the overall structural design and performance optimization of subsequent cooling elements.

[0146] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent transformation made using the content of the specification and drawings of the present invention, or directly or indirectly applied in related technical fields, shall be similarly included in the patent protection scope of the present invention.

Claims

1. A cooling element for pets or humans to wear, characterized in that, It includes, arranged in sequence: a skin-friendly fabric layer, a water-proof layer, a water storage layer, and an outer fabric; The skin-friendly fabric layer and the water-proof layer are compounded into an inner layer by means of dot gluing. The water storage layer is independently clamped between the inner layer and the outer fabric, and the outer fabric and the inner layer are welded by hot melt adhesive or ultrasonic wave.

2. The cooling element for pet or human wear according to claim 1, characterized in that, The water-proof layer is an ePTFE film, an ePE film, a PU film or a TPU film, and the hydrostatic pressure of the water-proof layer ≥ 5000mmH2O.

3. The cooling element for pet or human wear according to claim 1, characterized in that, The material of the water storage layer is needled cotton, non-woven fabric, cotton cloth or polar fleece, and the grammage of the water storage layer is 50-300 g / m 2 , and the thickness of the water storage layer is 1-20 mm.

4. The cooling element for pet or human wear according to claim 1, wherein The outer fabric is a polyester or nylon fabric treated with DWR, or a functional fabric with an ePTFE film or an ePE film compounded on the side facing the water storage layer.

5. The cooling element for pet or human wear according to claim 4, characterized in that, A radiative cooling coating is provided on the outer surface of the outer fabric, and the thickness of the radiative cooling coating is 2μm - 40μm; The radiative cooling coating is composed of a high emissivity matrix resin and radiative particles compounded. The radiative particles are one or more of nano-scale silica, silicon carbide, titanium dioxide, calcium carbonate, barium sulfate, silicon nitride, zinc oxide, aluminum oxide, iron oxide, zirconium dioxide or jade powder. The particle size of the radiative particles is controlled within 0.2 - 4μm, and the content per square meter is 2g - 60g.

6. The cooling element for pet or human wear according to any one of claims 1-5, characterized in that, The outer fabric includes an edge fabric and an inner and outer fabric; The inner and outer fabric is a polyester or nylon fabric treated with DWR, and a radiative cooling coating is provided on the outer surface of the inner and outer fabric. The edge fabric is a functional fabric with an ePTFE film or an ePE film compounded on the side facing the water storage layer.

7. The cooling element for pet or human wear according to any one of claims 1 to 5, characterized in that, A waterproof zipper is provided on the outer fabric, and a mesh pocket is sewn on one side or both sides of the waterproof zipper, and a USB charging small fan is embedded in the mesh pocket.

8. The cooling element for pet or human wear according to any one of claims 1 to 5, characterized in that, An opening is provided on the outer fabric. Between the opening and the water storage layer, there are included: a fan installation cavity and a water injection channel. The inner wall of the fan installation cavity fixes the USB charging small fan by means of magic tape; the opening is closed by magic tape, and the water injection channel is used to inject water into the middle water storage layer.

9. The cooling element for pet or human wear according to any one of claims 1 to 5, characterized in that, At least one opening member is provided on the side of the outer fabric facing the water storage layer. The opening member is used to inject water into the water storage layer or discharge excess liquid water. The opening member is any one or a combination of the following: a waterproof zipper, a plastic or silicone water injection / drainage port, and a sewn magic tape.

10. A cooling element for pet or human wear, characterized in that, It includes, arranged in sequence: a skin-friendly fabric layer, a water-proof layer, a water storage layer, and an outer fabric; The skin-friendly fabric layer, the water-proof layer and the water storage layer are compounded into one body by means of dot gluing, and the outer fabric and other layers are encapsulated as a whole by hot melt adhesive or ultrasonic wave welding.

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