Long-acting cooling wet wipe with temperature response adjustment function

Abstract

The utility model relates to personal care product technical field, concretely relates to a long -lasting cooling wet tissue with temperature response adjusting function, including base cloth layer and the functional coating of coating on the upper and lower surfaces of base cloth layer, the functional coating includes temperature -sensitive material hydrogel network and cooling condensation pearl, temperature -sensitive material hydrogel network is three -dimensional crosslinking structure with through hole, cooling condensation pearl is embedded in the hole, temperature -sensitive material hydrogel network is PNIPAM temperature -sensitive material, and its lowest critical consolute temperature is 32 DEG C. When using, the long -lasting cooling wet tissue realizes environmental temperature dynamic response, and the cool feeling is automatically enhanced in high temperature environment, and the irritation is reduced in low temperature environment, and the physical cooling, chemical cooling and temperature response multi -mechanism synergy, and the cooling stability and user comfort are significantly improved.

Description

Technical Field

[0001] This utility model relates to the field of personal care products technology, specifically to a long-lasting cooling wipe with temperature response regulation function. Background Technology

[0002] Cooling wipes are widely used for personal hygiene, cooling and relieving heat, sports and fitness, and medical care due to their convenience and immediate cooling effect. Currently, most cooling wipes on the market achieve their cooling effect by adding cooling ingredients such as menthol, utilizing their activation of TRPM8 receptors or the volatilization of the ingredients. However, existing technologies generally have the following drawbacks: 1) The cooling effect is short-lived, making it difficult to meet the needs of prolonged outdoor work; 2) Poor environmental adaptability, unable to adaptively adjust the cooling intensity according to different ambient temperatures, potentially causing over-stimulation and stinging sensations at low temperatures, while the cooling effect rapidly diminishes at high temperatures; 3) A single mechanism of action, mainly relying on the activation of TRPM8 receptors or the volatilization of ingredients to achieve cooling, lacking a temperature-responsive regulation mechanism. Therefore, there is an urgent need to develop a cooling wipe that can automatically adjust the cooling intensity according to ambient temperature, prolong the cooling effect, and improve user comfort. Utility Model Content

[0003] To address the shortcomings of existing technologies, the purpose of this invention is to provide a long-lasting cooling wipe with temperature response adjustment function. This wipe can automatically adjust the cooling intensity according to changes in ambient temperature, achieve dynamic temperature difference control between the skin and the environment, prolong the duration of the cooling effect, and improve the user's comfort and experience when using the wipe in different ambient temperatures.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a long-lasting cooling wipe with temperature response regulation function, comprising a base fabric layer and a functional coating coated on the upper and lower surfaces of the base fabric layer, wherein the functional coating comprises a temperature-sensitive hydrogel network and cooling beads, wherein the temperature-sensitive hydrogel network is a three-dimensional cross-linked structure with through pores, and the cooling beads are embedded in the pores, wherein the pore size is 1-50um.

[0005] Preferably, the thermosensitive hydrogel network is a PNIPAM thermosensitive material with a minimum critical co-solution temperature of 32°C.

[0006] Preferably, the particle size of the cooling beads is 5-20 μm.

[0007] Preferably, the cooling gel beads are made from menthol, mentholamide and menthyl lactate in a mass ratio of 1:3:3.

[0008] Preferably, the thickness of the functional coating is 0.1-0.5 mm, and the temperature-sensitive material hydrogel network accounts for 60%-90% of the mass of the functional coating.

[0009] Preferably, the functional coating includes a humectant and an adhesive. The humectant is dispersed in the three-dimensional cross-linked structure of the temperature-sensitive material hydrogel network, and the adhesive partially penetrates into the fiber gaps of the base fabric layer and partially coats the outer surface of the temperature-sensitive material hydrogel network.

[0010] Preferably, the moisturizer is glycerin or sodium hyaluronate.

[0011] Preferably, the adhesive is an acrylate colloid with a glass transition temperature of -30℃ to -10℃ and a surface roughness Ra of 1-5µm at the contact with the temperature-sensitive hydrogel network.

[0012] Preferably, the base fabric layer is made of spunlace nonwoven fabric.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention is the first to apply PNIPAM temperature-sensitive material to cooling wipes, constructing a temperature response regulation mechanism and breaking the traditional single-function mode of cooling wipes. By precisely setting the minimum critical co-solution temperature of PNIPAM to 32℃, it achieves intelligent response to the human body's comfortable temperature range. PNIPAM temperature-sensitive material is used as an intelligent switch and slow-release carrier, combined with cooling beads made from menthol, menthol, and menthyl lactate in a specific ratio, and works synergistically with the physical cooling mechanism formed by the evaporation of moisture from the humectant, adhesive, and base fabric, forming a multi-synergistic mechanism of "physical cooling + chemical cooling + temperature response regulation".

[0015] In this invention, the wet wipe can dynamically respond to ambient temperature during use, automatically enhancing the cooling sensation in high-temperature environments and reducing irritation in low-temperature environments; thanks to the combination of temperature-sensitive material slow release and cooling beads, the duration of the cooling effect is extended; the synergistic effect of multiple mechanisms, including physical cooling, chemical cooling, and temperature response, significantly improves the stability of cooling and user comfort, meeting the needs of different usage scenarios. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of the long-lasting cooling wet wipes of this utility model.

[0017] Reference numerals: 1. Base fabric layer; 2. Functional coating; 201. Thermosensitive hydrogel network; 202. Cooling beads; 203. Humectant; 204. Adhesive. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example 1: A long-lasting cooling wipe with temperature response regulation function, comprising a base fabric layer 1 and a functional coating 2 coated on the upper and lower surfaces of the base fabric layer 1. The functional coating 2 includes a temperature-sensitive hydrogel network 201 and cooling beads 202. The temperature-sensitive hydrogel network 201 is a three-dimensional cross-linked structure with interconnected pores. The cooling beads 202 are embedded in the pores. By introducing the temperature-sensitive material, a temperature response regulation mechanism is constructed. The cooling beads are released under the control of the temperature-sensitive material, which is the core physical basis for achieving temperature-responsive release. The functional coating 2 also includes a humectant 203 and an adhesive 204. The humectant 203 is dispersed in the three-dimensional cross-linked structure of the temperature-sensitive hydrogel network 201. The adhesive 204 partially penetrates into the fiber gaps of the base fabric layer 1, and another part coats the outer surface of the temperature-sensitive hydrogel network 201.

[0020] In this implementation plan, 55g / m 2 The spunlace nonwoven fabric is used as the base layer. The base layer is then subjected to plasma treatment at a power of 50W for 30 seconds to reduce its surface contact angle to 25°. The fabric is then cut to the required size of 15cm. x 20cm.

[0021] In this implementation scheme, the temperature-sensitive hydrogel network is PNIPAM temperature-sensitive material, with a minimum critical eutectic temperature of 32°C. When the ambient temperature is below 32°C, it restricts the release of cooling beads; when the ambient temperature is above 32°C, it promotes the release of cooling beads. PNIPAM temperature-sensitive material, as a temperature-responsive element, acts as a "smart switch," controlling the release of cooling beads based on changes in ambient temperature, and is the core component for achieving dynamic temperature difference regulation and long-lasting cooling.

[0022] In this embodiment, the cooling gel beads are made from menthol, mentholamide, and menthyl lactate in a mass ratio of 1:3:3. They generate a chemical cooling sensation by activating the skin's TRPM8 receptors. Through the combination of the temperature-sensitive material's sustained release and the cooling gel beads, the cooling duration is extended from 1-2 hours to 4 hours.

[0023] In this implementation scheme, the humectant is glycerin or sodium hyaluronate. The humectant slows down moisture evaporation, ensuring that the base fabric continuously achieves physical cooling through moisture evaporation, and synergistically enhances the cooling effect with chemical cooling.

[0024] In this embodiment, the adhesive is an acrylic colloid, which ensures that the components of the functional coating adhere stably to the base fabric and maintains the overall performance stability of the wet wipes.

[0025] As a technical optimization of this utility model, the prepared functional coating slurry is uniformly coated on the upper and lower surfaces of the base fabric layer, and the coating amount is controlled to be 10g / m². 2 The coating thickness is 0.1 mm, and it is dried with hot air at 60℃ to form a three-dimensional network structure with a porosity of about 50%.

[0026] When in use, when the ambient temperature is below 32℃, the molecular chains of PNIPAM thermosensitive material shrink, forming a tight network structure with smaller pores, restricting the diffusion and release of cooling beads from the pores. At this time, the wipes mainly rely on the evaporation of a small amount of water from the base fabric to provide a weak cooling sensation. When the ambient temperature is above 32℃, the PNIPAM molecular chains expand, the hydrogel swells, and the pores of the network structure increase. The cooling beads stored in the pores quickly diffuse to the skin surface, activating TRPM8 receptors to produce a cooling sensation. At the same time, the water in the base fabric evaporates more rapidly, working synergistically with the cooling beads to enhance the cooling effect, thus dynamically adjusting the cooling intensity according to the ambient temperature.

[0027] This invention achieves dynamic response to ambient temperature through the synergy of a PNIPAM temperature-sensitive hydrogel network and cooling beads. Furthermore, the combination of slow-release temperature-sensitive material and cooling beads extends the cooling duration from 1-2 hours to 4 hours. In addition, the synergistic effect of multiple mechanisms—physical cooling, chemical cooling, and temperature response regulation—controls the fluctuation of cooling intensity within ±10% under varying humidity and high-temperature environments, making it more stable than traditional wet wipes. The product has a wide range of applications, meeting needs for personal daily care, sports and fitness, and medical care, greatly optimizing the user experience and possessing broad market potential.

[0028] The above description is only for illustrating the present utility model. It should be understood that the present utility model is not limited to the above embodiments, and various modifications that conform to the concept of the present utility model are within the protection scope of the present utility model.

Claims

1. A long-lasting cooling wipe with temperature response regulation function, characterized in that, The material includes a base fabric layer (1) and a functional coating (2) coated on the upper and lower surfaces of the base fabric layer (1). The functional coating (2) includes a thermosensitive hydrogel network (201) and cooling beads (202). The thermosensitive hydrogel network (201) is a three-dimensional cross-linked structure with through pores. The cooling beads (202) are embedded in the pores, and the pore size is 1-50 μm.

2. The long-lasting cooling wipe with temperature response regulation function according to claim 1, characterized in that, The thermosensitive hydrogel network (201) is a PNIPAM thermosensitive material with a minimum critical cosolubility temperature of 32°C.

3. The long-lasting cooling wipe with temperature response regulation function according to claim 1, characterized in that, The particle size of the cooling beads (202) is 5-20 μm.

4. The long-lasting cooling wipe with temperature response regulation function according to claim 1, characterized in that, The functional coating (2) includes a humectant (203) and an adhesive (204). The humectant (203) is dispersed in the three-dimensional cross-linked structure of the thermosensitive material hydrogel network (201). The adhesive (204) partially penetrates into the fiber gaps of the base fabric layer (1) and partially coats the outer surface of the thermosensitive material hydrogel network (201).

5. A long-lasting cooling wipe with temperature response regulation function according to claim 4, characterized in that, The moisturizer (203) is glycerin or sodium hyaluronate.

6. A long-lasting cooling wipe with temperature response regulation function according to claim 4, characterized in that, The adhesive (204) is an acrylate colloid with a glass transition temperature of -30℃ to -10℃ and a surface roughness Ra of 1-5 μm at the contact with the thermosensitive hydrogel network (201).

7. A long-lasting cooling wipe with temperature response regulation function according to claim 1, characterized in that, The base fabric layer (1) is made of spunlace nonwoven fabric.

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