Cooling element worn by pet or human

Abstract

The utility model 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 fabric layer 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 the water storage layer is arranged in the cooling element for the pet or the human to wear, so that the evaporation efficiency is improved, and heat is cooled and taken away. 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 the hair are prevented from being soaked.

Description

Technical Field

[0001] This utility model relates to the field of cooling materials technology, specifically to a cooling element for pets or humans to wear. Background Technology

[0002] Currently, most common cooling clothing uses a structure of "quick-drying fabric + water-retaining felt + quick-drying fabric". While this structure can remove some heat through evaporative cooling, it suffers from poor breathability, dampness against the skin, and low evaporation efficiency. Representative products such as Suitical from the Netherlands and Canicool from Germany have the advantage of a closed structure that prevents liquid water from contacting pet hair, improving dryness. However, they all use diffused moisture-permeable fabrics, which do not have the ability to allow true water vapor to pass through, resulting in hindered evaporation and limited cooling power, failing to meet users' needs for high cooling efficiency.

[0003] Chinese invention patent application number 201811444841.6 discloses a biomimetic cooling fabric comprising a skin-friendly layer, a water-retaining layer, and an evaporation layer; the areal densities of the three layers are 150-300 gsm, 200-800 gsm, and 150-300 gsm, respectively. The skin-friendly layer is made of a material with cooling and moisture-wicking properties, exhibiting excellent water absorption and diffusion, enabling rapid dissipation of body heat and accelerated sweat evaporation. The water-retaining layer has highly efficient water absorption and locking functions, storing a large amount of external water and sweat excreted by the body to provide the moisture needed for evaporative cooling. This is equivalent to adding a temperature-regulating layer of skin to the body, thus achieving a long-lasting cooling effect. However, in the above technical solution, the diffusion of moisture in the dense water-retaining layer is hindered, and liquid water is prone to back-seeping into the skin-friendly layer during pressure or movement, causing a damp feeling against the skin and hindering evaporation efficiency. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a cooling element for pets or humans to wear while ensuring evaporation efficiency and preventing liquid water in the water storage layer from penetrating into the skin or fur.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a cooling element for pets or humans to wear, comprising: a skin-contact fabric layer, a water-repellent layer, a water-retaining layer and an outer fabric layer arranged in sequence.

[0006] The skin-adhesive fabric layer, the waterproof layer, and the water-retaining layer are bonded together by dispensing adhesive, and the outer fabric layer and other layers are sealed together as a whole by hot melt adhesive or ultrasonic welding.

[0007] Another technical solution provided by this utility model is: a cooling element for pets or humans to wear, characterized in that it includes, in sequence: a skin-contact fabric layer, a water-repellent layer, a water-retaining layer and an outer fabric layer;

[0008] The skin-adhesive fabric layer, the waterproof layer, and the water-retaining layer are bonded together by dispensing adhesive, and the outer fabric layer and other layers are sealed together as a whole by hot melt adhesive or ultrasonic welding.

[0009] The beneficial effects of this invention are as follows: cooling efficiency is highly positively correlated with the evaporation rate per unit time. In the cooling element for pets or humans, a water storage layer is incorporated to improve evaporation efficiency and dissipate heat through cooling. Furthermore, this invention also includes a water-resistant layer between the skin-contact fabric layer and the water storage layer to prevent liquid water from penetrating the skin or fur, thus avoiding wetting the skin and fur. This cooling element is suitable for pets and also for human use in high-temperature environments, including but not limited to internal wear in outdoor or high-heat-load occupational settings such as construction workers, delivery personnel, cyclists, and medical staff. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of a cooling element for pets or humans to wear, according to Embodiment 1 of a specific implementation of this utility model.

[0011] Figure 2 This is a schematic diagram of the structure of a cooling element for pets or humans to wear, according to Embodiment 2 of this utility model.

[0012] Figure 3 This is a schematic diagram of the structure of a cooling element for pets or humans to wear, according to Embodiment 4 of this utility model.

[0013] Figure 4 This is a schematic diagram of the structure of a cooling element for pets or humans to wear, according to Embodiment 6 of this utility model.

[0014] Label Explanation:

[0015] 1. Skin-contact fabric layer; 2. Water-resistant layer; 3. Water-retaining layer; 4. Outer fabric layer;

[0016] 51. First polyester; 52. First ePTFE membrane; 53. Needle-punched cotton; 54. First nylon; 55. First radiation-cooling coating;

[0017] 61. Second polyester; 62. Second ePTFE membrane; 63. Second felt; 64. Second nylon; 65. Radiation cooling coating; 66. USB charging mini fan; 67. Velcro;

[0018] 71. Inner lining fabric; 72. Edge fabric; 73. Water inlet and outlet. Detailed Implementation

[0019] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0020] This utility model provides a cooling element for pets or humans to wear, comprising: a skin-contact fabric layer, a water-repellent layer, a water-retaining layer, and an outer fabric layer arranged in sequence.

[0021] The skin-adhesive fabric layer and the waterproof layer are bonded together as an inner layer by dispensing adhesive. The water-retaining layer is independently sandwiched between the inner and outer fabric layers. The outer fabric layer is welded to the inner layer by hot melt adhesive or ultrasonic welding.

[0022] The beneficial effects of this invention are as follows: cooling efficiency is highly positively correlated with the evaporation rate per unit time. In the cooling element for pets or humans to wear, a water storage layer is provided to improve evaporation efficiency and remove heat through cooling. Furthermore, this invention also provides a water-resistant layer between the skin-contact fabric layer and the water storage layer to prevent liquid water in the water storage layer from penetrating into the skin or fur, thus avoiding wetting the skin and fur.

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

[0024] Preferably, in the above-mentioned cooling element, the water storage layer is made of needle-punched cotton, non-woven fabric, cotton cloth, or fleece, and the basis weight of the water storage layer is 50-300 g / m³. 2 The thickness of the water storage layer is 1-20mm.

[0025] Preferably, in the above-mentioned cooling element, the outer fabric is a polyester or nylon fabric treated with DWR (Durable Water Repellent, DWR), or a functional fabric composited with an ePTFE membrane or ePE membrane facing the water storage layer.

[0026] The purpose of the above-mentioned design is to prevent water from flowing out and penetrating into the skin or fur, while also avoiding affecting the dissipation of steam.

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

[0028] The radiant particles are one or more of the following: nano-sized silicon dioxide, 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 radiant particles is controlled between 0.2-4 μm, and the content per square meter is 2g-60g.

[0029] The purpose of the above settings is to use a water-resistant fabric (such as a DWR-treated fabric or a composite ePTFE membrane fabric) as the coating substrate, which prevents liquid water from passing through the outer fabric and accumulating on the outer surface of the outer fabric. This significantly improves the infrared radiation efficiency and continuous performance of the radiation cooling coating, thereby maximizing the synergistic effect of evaporative heat dissipation and far-infrared cooling mechanism to form a complete cooling system.

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

[0031] The inner lining material is a polyester or nylon fabric treated with DWR, and the outer surface of the inner lining material is provided with a radiation cooling coating. The edge fabric is a functional fabric with a composite ePTFE membrane or ePE membrane facing the water storage layer.

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

[0033] The aforementioned design further incorporates small mesh pockets sewn onto both sides of the waterproof zipper on the outer fabric, for embedding a USB charging fan. When the fan operates, it rapidly circulates the air between the outer layer and the intermediate water storage layer, accelerating the evaporation of moisture between the evaporation layers, thereby significantly enhancing the overall evaporative heat dissipation efficiency. By combining active airflow with passive evaporation, the surface temperature of the skin-contact fabric layer is further reduced, achieving a faster and more sustained cooling effect, and overcoming the problem of insufficient heat dissipation efficiency of purely passive evaporation in a static environment.

[0034] Preferably, in the cooling element described above, the outer fabric layer has an opening, and between the opening and the water storage layer, there is a fan mounting cavity and a water injection channel. The fan mounting cavity has an inner wall that secures an electric fan via a detachable mechanism. The water injection channel is used to inject water into the intermediate water storage layer. The inner wall of the fan mounting cavity is secured to a USB charging fan via Velcro. The opening is closed with Velcro.

[0035] The purpose of the above settings is to increase the way of evaporative heat dissipation, that is, to add a small USB fan to pressurize the inside of the cooling element, so that the water vapor inside can be better dissipated from the cooling element.

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

[0037] This utility model also provides a cooling element for pets or humans to wear, comprising: a skin-contact fabric layer, a water-repellent layer, a water-retaining layer and an outer fabric layer arranged in sequence;

[0038] The skin-adhesive fabric layer, the waterproof layer, and the water-retaining layer are bonded together by dispensing adhesive, and the outer fabric layer and other layers are sealed together as a whole by hot melt adhesive or ultrasonic welding.

[0039] The beneficial effects of the aforementioned cooling element are as follows: the skin-contact fabric layer can be made of water-resistant material (e.g., DWR-treated polyester or nylon fabric, capable of withstanding at least 20mm of water column without leakage), eliminating the need for a separate water-resistant layer; the water storage layer exists independently and is not combined with other layers; the outer fabric is DWR-treated polyester or nylon, or a functional fabric composited with ePTFE / ePE membranes; the overall structure can be equipped with a waterproof zipper for convenient water injection and ventilation adjustment; the outermost surface can also be coated with a radiation cooling coating to enhance overall cooling capacity by reflecting solar radiation and enhancing far-infrared heat dissipation. Compared to cooling elements that require a water-resistant layer, the aforementioned cooling element with this structure has the lowest cost.

[0040] The key technical concept of this utility model lies in the fact that cooling efficiency is highly positively correlated with the evaporation rate per unit time. Furthermore, users are concerned about whether their skin or hair will become wet; therefore, it is necessary to increase the evaporation rate while inhibiting moisture leakage. In addition, this utility model, based on first principles, proposes a thermodynamic relationship: user's body surface temperature ≈ cooling efficiency - heating efficiency. For effective cooling:

[0041] The following should be enhanced: 1) evaporative heat dissipation, 2) infrared radiation, and 3) air convection.

[0042] It also suppresses: 1) solar radiation heat absorption, 2) environmental heat conduction, and 3) infrared reflection.

[0043] Therefore, this utility model introduces a radiation cooling coating in its material selection to improve infrared emissivity and reduce solar energy absorption. This, in conjunction with a high-efficiency evaporation structure, achieves a combination of active and passive cooling.

[0044] The structural design of this utility model also fully considers the "failure mechanism" problem of radiative cooling materials in practical applications. In the prior art, radiative cooling coatings are often located at the moisture evaporation interface, and liquid water films easily form on their surface during use. These water films have strong absorption characteristics in the infrared band (especially in the 8-14 micrometer atmospheric window), which significantly weakens their heat dissipation function.

[0045] This invention uses an outer layer of water-resistant fabric (such as DWR fabric or composite ePTFE membrane fabric) as the coating substrate, combined with a water storage layer structure that stores water in the inner middle layer. This effectively prevents the accumulation of liquid water on the outer surface, significantly improves the infrared radiation efficiency and continuous performance of the radiation cooling coating, thereby maximizing the synergistic effect of evaporative heat dissipation and far-infrared cooling mechanism to form a complete cooling system.

[0046] The parameter settings for each layer of material in this utility model are as follows:

[0047] 1. Skin-friendly fabric layer

[0048] It can be made from polyester, nylon or their blends.

[0049] 2. Parameters of the waterproof membrane in the waterproof layer

[0050] The waterproof layer is preferably an ePTFE membrane or an ePE membrane with a micropore size of 0.1-2μm, a hydrostatic pressure ≥10000mmH2O, and a vapor permeability (GB / T12704.1 positive cup method) ≥7000g / m³. 2 • It allows for rapid water vapor permeation within 24 hours without leakage of liquid water; if TPU, PU, ​​or PE membranes are used, the moisture permeability will not exceed 5000g / m². 2 • 24h, only as an optional implementation. Cooling efficiency is not as good as ePTFE or ePE membranes.

[0051] The waterproof layer can also be made of polyester or nylon fabric treated with DWR: the hydrostatic pressure of the waterproof layer is ≥30mmH2O, and the vapor permeability (positive cup method) is ≥5000g / m². 2 ·24h.

[0052] While DWR-treated polyester or nylon can offer some degree of water repellency, it cannot provide long-term water repellency. This is because when woven T400 fabric is treated with ordinary C6 / C0 DWR, the water column pressure (typically 20-50mm (0.2-0.5kPa)) of the felt water reservoir can be compressed by a dog or human body, resulting in localized pressure exceeding 1kPa, forcing water out directly. Once the fabric surface is submerged in liquid water, the surface tension barrier of the DWR treatment is disrupted, allowing the fabric pores to rapidly absorb water, leading to continuous leakage. Continuous leakage or surface dampness will make users perceive a leak, causing them to worry about the product's effectiveness. These are the disadvantages. The advantages, however, are that DWR-treated fabrics have excellent breathability and cost only one-third of an eptfe membrane.

[0053] 3. Aquifer parameters

[0054] The water storage layer is made of needle-punched cotton, non-woven fabric, or other fibrous absorbent materials with a basis weight range of 50-300 g / m³. 2Alternatively, fabrics such as cotton or fleece with moderate water retention capacity can be used as the composite absorbent layer to improve the balance between water retention and the feel of the fabric.

[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 to traditional structures.

[0056] 4. Outer fabric

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

[0058] Functional fabrics made of composite ePTFE or ePE membranes have a hydrostatic pressure ≥10000mmH2O and a vapor permeability (GB / T12704.1 positive cup method) ≥7000g / m³. 2 ·24h;

[0059] Polyester or nylon fabrics treated with DWR have a hydrostatic pressure ≥30mmH2O and a vapor permeability (GB / T12704.1 positive cup method) ≥10000g / m². 2 • 24h; The water repellency rating of the DWR-treated fabric is preferably 90 or above in the AATCC 22 standard, with a droplet contact angle ≥110° to prevent liquid water from penetrating from the water storage layer to the outside of the garment.

[0060] 5. Radiation-cooled coating

[0061] The radiation-cooling coating is composed of a high-emissivity matrix resin (such as polyurethane) and radiation particles. The matrix is ​​a microporous resin matrix with a pore size of 0.01 μm-15 μm and a pore density of approximately 1.5 × 10⁻⁶ pores / cm². 2 These micropores provide sufficient channels for gas and water vapor, ensuring the fabric's breathability and moisture permeability. The radiation-cooling coating has a thickness of 2μm–40μm, using nano-sized silica, calcium carbonate, barium sulfate, and other materials as functional particles, with a particle size controlled between 0.2–4μm and a preferred content of 2g–60g per square meter. The coating has an emissivity ≥0.9 and a solar reflectivity R ≥0.85, covering the atmospheric window (8–13μm) band to enhance infrared heat dissipation and prevent heat absorption at high temperatures. Furthermore, this novel structure avoids the formation of a continuous film of liquid water on its surface, significantly preserving the performance advantages of the radiation-cooling layer.

[0062] The microporous design of the base resin in this application meets the requirements for air permeability and evaporation, avoiding the need for through-holes or drilling in radiation cooling coatings. This avoids the problems that macroscopic through-holes can cause, such as damaging the coating integrity, potentially leading to cold particle shedding, reduced reflectivity, or affecting the coating's wear resistance.

[0063] The outer fabric including the radiation cooling coating in this application may be the breathable and cooling woven fabric with publication number CN113997673B entitled "Breathable and Cooling Woven Fabric and Preparation Method Thereof".

[0064] 6. Dispensing and laminating process

[0065] In this invention, the skin-adhesive fabric layer, the waterproof layer, and the water-retaining layer are bonded together using a hot melt adhesive dispensing process. The adhesive used can be a polyester-based or polyamide-based hot melt adhesive, and the specific type is not limited. The dispensing spacing is preferably 5–20 mm, the dispensing dot diameter is 1–2 mm, and the arrangement can be linear or grid-like to ensure the stability of the composite structure while also ensuring the uniformity of the breathable channels.

[0066] 7. Waterproof performance

[0067] The side waterproof membrane of the skin-contact fabric layer is required to have a hydrostatic pressure performance of ≥10000mmH2O;

[0068] The outer fabric must be able to prevent the leakage of liquid from the water storage layer. The design standard is to prevent leakage of ≥20mm water column (corresponding to the maximum water storage layer thickness).

[0069] 8. Moisture permeability

[0070] The moisture permeability of the waterproof membrane must meet the ISO 15496 standard, preferably with a moisture permeability of ≥10000g / m³. 2 • 24h (for ePTFE / ePE membranes); DWR-treated fabrics can achieve a moisture permeability of 8000–10000 g / m². 2 ·24h.

[0071] Example 1

[0072] Please see Figure 1 A cooling element for pets or humans to wear, comprising, in sequence: a skin-contact fabric layer 1, a water-resistant layer 2, a water-retaining layer 3, and an outer fabric layer 4.

[0073] The skin-adhesive fabric layer 1, the waterproof layer 2, and the water-retaining layer 3 are bonded together by adhesive application to form an integral inner layer structure. The outer fabric layer and the inner layer structure are sealed together as a whole by hot melt adhesive or ultrasonic welding.

[0074] The skin-adhesive fabric layer is selected from polyester, nylon, or their blends.

[0075] The waterproof layer is a waterproof membrane with a micropore size of 0.2 μm and a moisture permeability of more than 10,000 g / m². 2 • 24h. The waterproof membrane is an ePTFE membrane.

[0076] The water storage layer is made of needle-punched cotton, and its basis weight is 50-300 g / m³.2 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 central waterproof zipper water inlet, or alternatively, a pull-out cap or a silicone sealing plug, to meet the functional requirements of repeated water filling and adjustment of evaporation capacity.

[0079] The water inlet can also use Velcro or other methods to open and close, as long as it meets the need for water filling. If the opening is in a high place, such as a dog's back or a human's shoulder, then its sealing performance does not need to be particularly good, because liquid water flows downhill.

[0080] Example 2

[0081] A cooling element for pets or humans to wear includes, in sequence: a skin-contact fabric layer, a water-repellent layer, a water-retaining layer, and an outer fabric layer.

[0082] The skin-adhesive fabric layer, the waterproof layer, and the water-retaining layer are bonded together using an adhesive dispensing method to form an integral inner layer structure. The outer fabric layer and the inner layer structure are then sealed together as a whole using hot melt adhesive or ultrasonic welding.

[0083] The skin-adhesive fabric layer is selected from polyester, nylon, or their blends.

[0084] The waterproof layer is a waterproof membrane with a micropore size of 0.5 μm and a moisture permeability of greater than 10000 g / m². 2 • 24h. The waterproof membrane is an ePTFE membrane or an ePE membrane.

[0085] The water storage layer is made of needle-punched cotton, non-woven fabric, cotton fabric, or fleece, and the weight of the water storage layer is 100g / m³. 2 The thickness of the water storage layer is 15mm.

[0086] The outer fabric is made of polyester or nylon and is a functional fabric that is composited with an ePTFE membrane or ePE membrane on the side facing the water storage layer.

[0087] The cooling element can be equipped with waterproof zippers or Velcro for easy water filling and ventilation adjustment; the outermost surface can also be coated with a radiation cooling coating to improve the overall cooling capacity by reflecting solar radiation and enhancing far-infrared heat dissipation.

[0088] The outer surface of the outer fabric is provided with a radiation cooling coating, the thickness of which is 4μm.

[0089] The radiation cooling coating is composed of a high emissivity matrix resin and radiation particles. The radiation particles are nano-sized silicon dioxide with a particle size controlled at 0.5 μm and a content of 30 g per square meter.

[0090] Please see Figure 2 Preferably, the cooling element for pets or humans includes, in sequence: a first polyester 51, a first ePTFE membrane 52, needle-punched cotton 53, a first ePTFE membrane 52, a first nylon 54, and a first radiative cooling coating 55.

[0091] Example 3

[0092] A cooling element for pets or humans to wear includes, in sequence: a skin-contact fabric layer, a water-repellent layer, a water-retaining layer, and an outer fabric layer.

[0093] The skin-adhesive fabric layer and the waterproof layer are bonded together as an inner layer by dispensing adhesive. The water-retaining layer is independently sandwiched between the inner and outer fabric layers. The outer fabric layer is welded to the inner layer by hot melt adhesive or ultrasonic welding.

[0094] The water storage layer is made of needle-punched cotton, non-woven fabric, cotton fabric, or fleece, and the weight of the water storage layer is 300 g / m³. 2 The thickness of the water storage layer is 20mm.

[0095] The water storage layer is independently set up, sandwiched between the inner and outer composite fabric layers, featuring a short evaporation path and high efficiency. (The cooling element is not independently set up compared to the water storage layer, resulting in lower cost and a lower entry barrier.)

[0096] The skin-contact fabric layer is a functional fabric made of composite ePTFE membrane, with a hydrostatic pressure ≥10000mmH2O and a vapor permeability (GB / T12704.1 positive cup method) ≥7000g / m². 2 ·24h;

[0097] The outer fabric layer is made of DWR-treated polyester with a hydrostatic pressure ≥30mmH2O and a vapor permeability (GB / T12704.1 positive cup method) ≥10000g / m². 2 ·24h;

[0098] The skin-contact fabric layer and the outer fabric layer are heat-bonded together at their outer edges using hot melt adhesive or ultrasonic welding to form a "bag-like" cavity structure. The water storage layer is placed inside this cavity and is prevented from shifting relative to the outer fabric layer by adhesive or other fixing devices. The heat-bonding adhesive between the skin-contact fabric layer and the outer fabric layer is a polyester-based or polyamide-based hot melt adhesive.

[0099] The outer fabric layer is equipped with a waterproof zipper for water injection and ventilation.

[0100] Example 4

[0101] Please see Figure 3 A cooling element for pets or humans to wear includes, in sequence: a skin-contact fabric layer, a water-repellent layer, a water-retaining layer, and an outer fabric layer; specifically, in sequence, it includes: a second polyester 61, a second ePTFE membrane 62, a second felt 63, a second ePTFE membrane 62, a second nylon 64, and a second radiative cooling coating 65.

[0102] The outer fabric has an opening, and between the opening and the water storage layer are a fan mounting cavity and a water injection channel, which is used to inject water into the intermediate water storage layer.

[0103] The USB charging mini fan 66 is fixed to the inner wall of the fan mounting cavity by Velcro; the opening is closed by Velcro 67.

[0104] Example 5

[0105] A cooling element for pets or humans to wear includes layers arranged sequentially as shown in Table 1.

[0106] Table 1

[0107]

[0108] Example 6

[0109] For pets, if the outer fabric uses DWR instead of a waterproof membrane, it can cause leaks. Leaks usually occur in lower areas or at the edges.

[0110] Based on the above, this embodiment provides an improvement on the outer layer fabric based on the above embodiment. The outer layer fabric includes an edge fabric and an inner lining fabric. The inner lining fabric is a polyester or nylon fabric treated with DWR. The outer surface of the inner lining fabric is provided with a radiation cooling coating. The edge fabric is a functional fabric composited with an ePTFE membrane or ePE membrane facing the water storage layer.

[0111] For details, please refer to Figure 4 A cooling element for pets or humans to wear includes a water storage layer 3 and an outer fabric covering its outer surface. The outer fabric includes an inner lining 71 and an edge fabric 72. The inner lining is made of DWR-treated polyester, and its outer surface is coated with a radiation cooling coating. The edge fabric is a functional fabric composited with an ePTFE membrane facing the water storage layer. The outer fabric also has water inlet and outlet 73, which can be an opening made of waterproof zipper or Velcro. The location of the opening is not limited, but it is preferably located at the edge of the outer fabric to facilitate the drainage of excess water.

[0112] The advantages of the improved outer fabric described above are: combining the waterproof advantages of the waterproof membrane with the high moisture permeability and vapor permeability of DWR, and maximizing solar radiation absorption at higher elevations. This embodiment innovatively proposes an implementation method that combines these advantages. The aforementioned outer fabric sacrifices some water tightness to achieve higher moisture permeability, making it more adaptable to direct sunlight during the day compared to other embodiments, thus demonstrating superior performance for specific application scenarios.

[0113] Experimental Example

[0114] Experimental Record 1

[0115] Experimental Method: At room temperature (30.6℃), a 10cm × 10cm sample was sealed with transparent tape onto a 9cm × 9cm sample of absorbent needle-punched cotton containing water. After standing for 1 hour, the weight change of the absorbent needle-punched cotton and the surface temperature of the sample were recorded. Sample 2: Water resistant to 15000mmH2O, permeable to 10000g / m³. 2 • 24h; Sample 3: Waterproof to 15000mmH2O, breathable to 7000g / m 2 • 24h; Sample 4: Waterproof 15000mmH2O, breathable 7000g / m 2 ·24h;

[0116] The specific data is shown in Table 2.

[0117] Table 2

[0118]

[0119] Results analysis:

[0120] Compared with the Canicool control (mass evaporation 0.52 g, surface temperature 26.40 °C), the three self-made composite samples had greater mass evaporation (0.68–0.74 g) and lower equilibrium surface temperatures (25.10–25.30 °C), indicating a significant improvement in evaporative heat dissipation performance.

[0121] Among them, the ePTFE membrane alone (sample 2) had the highest evaporation (0.74g), while the nylon composite ePTFE (sample 3) had the lowest equilibrium temperature (25.10℃).

[0122] The composite sample (sample 4) treated with DWR has both a high evaporation rate (0.70g) and excellent waterproof performance, showing excellent overall performance.

[0123] The above data supports:

[0124] ePTFE / nylon composite structures outperform commercially available products in improving evaporative cooling efficiency;

[0125] While DWR treatment slightly reduces evaporation, it significantly enhances water-repellent properties, making it the preferred choice in terms of trade-offs.

[0126] Experiment Record 2

[0127] At room temperature (25℃), take a 10cm × 10cm sample and seal it with transparent tape onto a 9cm × 9cm sample of absorbent needle-punched cotton containing water. Let it stand for 1 hour and record the weight change of the absorbent needle-punched cotton and the surface temperature of the sample. Sample 1: Water resistant to 15000mmH2O, permeable to 10000g / m² 2 • 24h; specific data are shown in Table 3.

[0128] Table 3

[0129]

[0130] Results Analysis

[0131] Evaporation comparison: Sample 1 had the highest evaporation (1.28g), which was about 2.5 times that of Canicool, indicating that the ePTFE membrane composite coating fabric far surpasses the commercially available control sample in terms of evaporative heat dissipation.

[0132] Surface temperature drop

[0133] Sample 1 had the lowest termination temperature, at only 21.1℃, which was 3.2℃ lower than the ambient temperature (24.3℃), indicating the best cooling effect.

[0134] Compared to the Canicool termination temperature of 23.5℃, the temperature drop was only 0.8℃; for sample 3, the termination temperature was 22.5℃, a drop of 1.8℃.

[0135] Overall evaluation

[0136] Sample 1 (ePTFE membrane composite fabric 1) has the best performance and is suitable as a high-efficiency evaporative heat dissipation middle or outer layer fabric.

[0137] The evaporation rate and cooling effect of the Canicool control sample were inferior to those of the present invention, verifying the significant advantages of the multilayer composite structure of the present invention.

[0138] Experimental Record 3: Moisture permeability test using the positive cup method

[0139] Test conditions: Fabric sample area: 25cm² 2 Test method: GB / T 12704.1 (positive cup method); Ambient temperature: room temperature chamber (≈23℃); Test duration: 24h; Record items: initial weight, 24h weight; Coated fabric of composite ePTFE membrane: waterproof 15000mmH2O, moisture permeable 7000g / m² 2• 24h; DWR-treated coated fabric: Waterproof to 50mmH2O, breathable to 7000g / m² 2 • 24h; specific data are shown in Table 4.

[0140] Table 4

[0141] Sample Initial weight (g) 24h weight (g) 24h weight difference (g) Coated fabric of composite ePTFE membrane 116.45 115.85 0.60 DWR treated coated fabric 116.55 115.93 0.62 Canicool commercial fabric 116.5 116.29 0.21

[0142] Significantly improved moisture permeability: The weight loss of the composite ePTFE membrane fabric and the DWR-treated fabric after 24 hours reached 0.60g and 0.62g respectively, which is about 3 times that of the Canicool commercial fabric (0.21g), indicating that both have moisture permeability far exceeding that of the commercially available comparison samples.

[0143] Meeting the requirements of high-efficiency evaporative cooling: Experimental results fully demonstrate that the composite ePTFE membrane fabric and DWR-treated fabric used in this invention can significantly improve the evaporation rate in terms of moisture permeability, which helps to improve the evaporative heat dissipation capacity of the cooling element per unit time, in line with the design intention of high-efficiency evaporative cooling.

[0144] In summary, this positive cup method moisture permeability test verified the advantages of the developed fabric in evaporative cooling applications, and provided important experimental basis for the overall structural design and performance optimization of subsequent cooling elements.

[0145] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A cooling element for pets or humans to wear, characterized in that, It includes, in sequence: a skin-contact fabric layer, a waterproof layer, a water-retaining layer, and an outer fabric layer; The skin-adhesive fabric layer and the waterproof layer are bonded together as an inner layer by dispensing adhesive. The water-retaining layer is independently sandwiched between the inner and outer fabric layers. The outer fabric layer is welded to the inner layer by hot melt adhesive or ultrasonic welding.

2. The cooling element for pets or humans to wear according to claim 1, characterized in that, The waterproof layer is an ePTFE membrane, ePE membrane, PU membrane, or TPU membrane, and the hydrostatic pressure of the waterproof layer is ≥5000mmH2O.

3. The cooling element for pets or humans to wear according to claim 1, characterized in that, The water storage layer is made of needle-punched cotton, non-woven fabric, cotton fabric, or fleece, and its basis weight is 50-300 g / m³. 2 The thickness of the water storage layer is 1-20mm.

4. The cooling element for pets or humans to wear according to claim 1, characterized in that, The outer fabric is a polyester or nylon fabric treated with DWR, or a functional fabric that is composited with an ePTFE membrane or ePE membrane on the side facing the water storage layer.

5. The cooling element for pets or humans to wear according to claim 4, characterized in that, The outer surface of the outer fabric is provided with a radiation cooling coating, the thickness of which is 2μm-40μm. The radiation cooling coating is composed of a high emissivity matrix resin and radiation particles. The radiation particles are one or more of the following: nano-sized silicon dioxide, 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 radiation particles is controlled between 0.2-4 μm, and the content per square meter is 2g-60g.

6. The cooling element for pets or humans to wear according to any one of claims 1-5, characterized in that, The outer fabric includes edge fabric and inner lining fabric; The inner lining material is a polyester or nylon fabric treated with DWR, and the outer surface of the inner lining material is provided with a radiation cooling coating. The edge fabric is a functional fabric with a composite ePTFE membrane or ePE membrane facing the water storage layer.

7. The cooling element for pets or humans to wear according to any one of claims 1 to 5, characterized in that, The outer fabric is equipped with a waterproof zipper, and a mesh pocket is sewn onto one or both sides of the waterproof zipper. A USB charging fan is embedded in the mesh pocket.

8. The cooling element for pets or humans to wear according to any one of claims 1 to 5, characterized in that, The outer fabric has an opening, and between the opening and the water storage layer are a fan mounting cavity and a water injection channel. The inner wall of the fan mounting cavity is fixed with a USB charging fan by Velcro. The opening is closed by Velcro, and the water injection channel is used to inject water into the intermediate water storage layer.

9. The cooling element for pets or humans to wear according to any one of claims 1 to 5, characterized in that, The outer fabric has at least one opening on the side facing the water storage layer. The opening is used to inject water into the water storage layer or drain excess liquid water. The opening is any one or a combination of the following: a waterproof zipper, a plastic or silicone water injection / drainage port, and a sewn-on Velcro.

10. A cooling element for pets or humans to wear, characterized in that, It includes, in sequence: a skin-contact fabric layer, a waterproof layer, a water-retaining layer, and an outer fabric layer; The skin-adhesive fabric layer, the waterproof layer, and the water-retaining layer are bonded together by dispensing adhesive, and the outer fabric layer and other layers are sealed together as a whole by hot melt adhesive or ultrasonic welding.

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