Mimicry antibacterial constant-temperature cloth

Abstract

The invention relates to the technical field of cloth, in particular to mimicry antibacterial constant-temperature cloth which is used for wrapping infants and is provided with outer wrapping cloth and inner wrapping cloth. The middle parts of the outer wrapping cloth and the inner wrapping cloth are connected through a magic tape structure; the inner wrapping cloth is of a three-layer structure, the outer layer is a heat preservation layer, the middle layer is an antibacterial layer, and the inner layer is a skin-friendly layer. The heat preservation layer is a phase change energy storage type temperature adjusting heat preservation layer and is formed by blending and spinning base material fibers and fatty acid phase change microcapsules. The wrapping cloth special for the infant is reasonable in structure, synergistic in function, safe, durable and capable of precisely meeting the special physiological requirements of the premature infant, the common infant nursing scene is met, and the core nursing pain points of the premature infant that the body temperature adjusting capacity is weak, the skin barrier is fragile and the immunity is low are specifically solved.

Description

Technical Field

[0001] This invention relates to the field of fabric technology, and in particular to a biomimetic antibacterial constant temperature fabric. Background Technology

[0002] Existing swaddle blankets for infants (especially premature infants) have significant shortcomings in terms of structural design, functional synergy, protective fit, and safety and durability. Premature infants have immature thermoregulatory centers, fragile skin barriers, and low immunity. Existing products neither optimize warmth for the physiological characteristics of premature infants nor achieve a harmonious balance between skin-friendly safety, precise temperature control, long-lasting antibacterial properties, and ease of use. Not only may ordinary infants experience skin discomfort and excessive temperature fluctuations due to limited functionality or poor design, premature infants are more prone to temperature instability, skin allergies, and increased risk of infection, which can seriously affect their growth and development. Existing products can no longer meet parents' comprehensive demands for infant (especially premature) products that are "multifunctional, highly safe, practical, and adapted to their special physiological needs." With the upgrading of scientific parenting concepts, the market demand for infant swaddles with excellent comprehensive performance that take into account both universality and protection for premature infants is becoming increasingly urgent. Therefore, developing an infant swaddle that is structurally reasonable, functionally coordinated, safe and durable, and adapted to the special physiological needs of premature infants has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0003] To overcome the shortcomings of existing technologies that lack a structurally sound, functionally coordinated, safe, durable, and physiologically suitable swaddling cloth for premature infants, this invention provides a biomimetic antibacterial temperature-regulating cloth. This cloth, used for swaddling infants, comprises an outer swaddling cloth and an inner swaddling cloth. The outer and inner swaddling cloths are connected at the middle via a Velcro structure. The inner swaddling cloth has a three-layer structure: an outer insulating layer, a middle antibacterial layer, and an inner skin-friendly layer. The insulating layer is a phase-change energy storage type temperature-regulating insulating layer, woven from a blend of base fiber and fatty acid phase-change microcapsules.

[0004] In a preferred embodiment of the present invention, the substrate fiber is selected as soft polyester staple fiber or viscose fiber; the encapsulating wall material of the fatty acid phase change microcapsules is polyamide, the particle size of the microcapsules is 1μm-5μm, and the fatty acid phase change material loaded inside is a mixture of palmitic acid and stearic acid; the mass percentage of the fatty acid phase change microcapsules in the insulation layer is 15%-25%.

[0005] In a preferred embodiment of the present invention, the fatty acid phase change material is a ternary blend of decanoic acid, palmitic acid, and stearic acid, with the following component ratio: 60% decanoic acid (CA): 25% palmitic acid (PA): 15% stearic acid (SA).

[0006] In a preferred embodiment of the present invention, the antibacterial layer is a composite antibacterial functional layer, which uses bamboo fiber spunlace nonwoven fabric as the substrate, and the areal density of the substrate is 20 g / m³. 2 -30g / m 2 The substrate is loaded with microencapsulated natural antibacterial components. The wall material of the microcapsules is water-soluble polyurethane. The antibacterial components encapsulated inside are a compound of bamboo quinone extract and chitosan quaternary ammonium salt. The particle size of the microcapsules is 2μm-4μm, and the loading amount in the antibacterial layer is 8%-12%.

[0007] In a preferred embodiment of the present invention, the Velcro structure is configured as a strip.

[0008] In a preferred embodiment of the present invention, the outer wrapping fabric has a double-layer structure, with the outer layer being a stain-resistant, anti-slip, and breathable layer, and the inner layer being a heat-insulating and elastic layer.

[0009] In a preferred embodiment of the present invention, the thermal insulation elastic layer is a knitted sandwich elastic structure, including an outer elastic knitted base fabric, an inner elastic knitted base fabric, and an elastic thermal insulation filler between the two base fabrics.

[0010] In a preferred embodiment of the present invention, the elastic knitted base fabric is formed by warp and weft knitting of spandex-viscose composite yarn; the elastic thermal insulation filler is selected from three-dimensional crimped hollow polyester staple fiber.

[0011] In a preferred embodiment of the present invention, the anti-fouling, anti-slip, and breathable layer is a modified warp-knitted mesh functional layer. The modified warp-knitted mesh uses environmentally friendly polyester warp-knitted mesh fabric as the base material, and the mesh size of the base material is 0.1mm-0.3mm, with an areal density of 20g / m³. 2 -28g / m 2 The substrate is treated with an environmentally friendly water- and oil-repellent finishing agent through padding and baking; the outer surface of the substrate is coated with food-grade silicone micro-bumps using a dot coating process, and the material of the micro-bumps is medical-grade liquid silicone.

[0012] The beneficial effects are as follows: This invention provides a swaddle cloth for infants that is structurally reasonable, functionally coordinated, safe and durable, and precisely adapted to the special physiological needs of premature infants. It not only meets the needs of ordinary infant care scenarios, but also specifically addresses the core care pain points of premature infants, such as weak thermoregulation, fragile skin barrier, and low immunity. This invention adopts a separate inner and outer wrapping fabric design, connected by a strip of Velcro on the back, which can be wrapped independently and the position can be adjusted freely. It is flexible in use and easy to wash separately (avoiding cross-contamination between layers). It is suitable for high-frequency care scenarios for premature infants (such as frequent checks and changes), reduces disturbance to premature infants during care, and reduces the risk of infection. This invention features a three-layer inner wrapping structure precisely tailored to the needs of infants (especially premature infants): the skin-friendly layer is soft and non-irritating, reducing friction damage to the delicate skin of premature infants and preventing skin barrier damage; the antibacterial layer achieves a ≥99% antibacterial rate with a natural compound antibacterial component, is hypoallergenic and leaves no chemical residue, effectively blocking bacterial invasion, reducing the risk of infection for premature infants, and its washability meets the needs of high-frequency cleaning; the insulating layer achieves a precise constant temperature of 36-37℃ through a ternary blend of decanoic acid, palmitic acid, and stearic acid, which is suitable for the immature thermoregulatory center of premature infants, avoiding excessive temperature fluctuations (such as hypothermia or overheating), providing a stable temperature environment for premature infants, and supporting growth and development; the three layers work together to achieve integrated protection of "skin-friendly and sensitive protection + highly effective antibacterial + precise constant temperature", comprehensively covering the core care needs of premature infants; The outer wrapping fabric of this invention combines protection with suitability for premature infants: the heat-insulating elastic layer uses a sandwich filling design to achieve a tight fit of ≤0.8mm, reducing heat loss between layers, prolonging the time of body temperature maintenance, and meeting the needs of premature infants for continuous and stable warmth; the stain-resistant, non-slip, and breathable layer, through water-repellent finishing, flexible raised dots, and mesh structure, achieves easy cleaning of stains (avoiding the growth of bacteria from milk stains, complementary food puree, etc.), prevents shifting (preventing insufficient warmth due to loose wrapping), and high breathability (breathability rate ≥1800mm / s), which can prevent premature infants from experiencing skin redness, rashes, or infections due to stuffiness and dampness, comprehensively improving the safety and comfort of premature infant care. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention. Detailed Implementation

[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] Example: Figure 1As shown, a biomimetic antibacterial thermostatic fabric is used for wrapping infants and young children. It comprises an outer wrapping fabric and an inner wrapping fabric. The outer wrapping fabric and the inner wrapping fabric are connected at the middle by a Velcro structure. The inner wrapping fabric primarily provides a snug fit around the infant, achieving skin-friendly, antibacterial, and heat-insulating functions. The outer wrapping fabric, which mainly comes into contact with external objects and people, provides stain resistance, slip resistance, and breathability. The inner wrapping fabric has a three-layer structure: an outer heat-insulating layer, a middle antibacterial layer, and an inner skin-friendly layer. This design prevents friction damage to the infant's delicate skin through the inner skin-friendly layer, avoids contact with external pathogens through the middle antibacterial layer, and maintains the infant's body temperature and comfort under different environments through the outer heat-insulating layer's low-temperature heat absorption and high-temperature heat release. The heat-insulating layer is a phase-change energy storage type temperature-regulating layer, woven from a blend of base fiber and fatty acid phase-change microcapsules.

[0016] The substrate fiber is selected from soft polyester staple fiber or viscose fiber to meet the softness requirements of infants' clothing; the encapsulating wall material of the fatty acid phase change microcapsules is polyamide, the particle size of the microcapsules is 1μm-5μm, and the fatty acid phase change material loaded inside is a mixture of palmitic acid and stearic acid. The phase change temperature of this phase change material is 28℃-32℃ (matching the comfortable temperature range of infants' skin), and the latent heat of phase change is ≥180J / g; the mass ratio of the fatty acid phase change microcapsules in the insulation layer is 15%-25% to ensure temperature regulation performance while avoiding the insulation layer from becoming hard and affecting wearing comfort due to excessive microcapsule ratio. The temperature regulation mechanism of the insulation layer is as follows: when the ambient temperature is below 28℃ (low temperature environment), the fatty acid phase change microcapsules are in a solid state. They absorb ambient heat and heat dissipated from the infant's body surface, undergo a "solid-to-semi-solid" phase change and store latent heat, thereby preventing the infant's body surface temperature from dropping rapidly. When the ambient temperature is above 32℃ (high temperature environment), the fatty acid phase change microcapsules are in a semi-solid state. They release the stored latent heat and undergo a "semi-solid-to-solid" phase change, thereby inhibiting the infant's body surface temperature from exceeding 32℃.

[0017] The fatty acid phase change material is a ternary blend of decanoic acid, palmitic acid, and stearic acid, with a component ratio of 60% decanoic acid (CA): 25% palmitic acid (PA): 15% stearic acid (SA). The phase change temperature of the phase change material is adjusted to 36℃-37℃ to suit premature infants.

[0018] The antibacterial layer is a composite antibacterial functional layer, which uses bamboo fiber spunlace nonwoven fabric as the substrate, and the areal density of the substrate is 20 g / m³. 2 -30g / m 2(Balancing lightness and thinness with mechanical strength); the substrate is loaded with microencapsulated natural antibacterial components. The wall material of the microcapsules is water-soluble polyurethane, and the antibacterial component encapsulated inside is a compound of bamboo quinone extract and chitosan quaternary ammonium salt (mass ratio 1:2). The particle size of the microcapsules is 2μm-4μm, and the loading amount in the antibacterial layer is 8%-12% (ensuring antibacterial effect while avoiding excessive precipitation of components). The antibacterial mechanism of the antibacterial layer is as follows: the microencapsulated antibacterial components can be slowly released through the pores of the substrate. Among them, bamboo quinone extract can destroy the cell membrane structure of pathogens, and chitosan quaternary ammonium salt can inhibit the replication of pathogen DNA. After the two are combined, the antibacterial rate against Escherichia coli, Staphylococcus aureus, and Candida albicans is ≥99%. At the same time, the antibacterial layer is located in the middle layer, which can physically block pathogens in the external environment from penetrating the insulation layer and contacting the skin of infants and young children, and will not directly contact the skin of infants and young children (avoiding direct irritation of delicate skin by antibacterial components). The antibacterial layer also possesses the following characteristics suitable for infant and toddler scenarios: safety and hypoallergenicity, the antibacterial components are a compound of natural extracts, free of heavy metals and chemically synthesized antibacterial agent residues, meeting OEKO-TEX Standard 100 Class I infant-grade certification, and showing no irritation or allergens after a skin patch test (24h); water-wash durability, after 30 standard infant product washes (40℃ water temperature, neutral detergent), its antibacterial rate remains ≥90%, matching the high-frequency washing requirements of infant and toddler products; interlayer synergy, the bamboo fiber substrate has an air permeability of ≥1500mm / s, which will not hinder the temperature-regulating heat transfer of the insulation layer, while its softness is consistent with the feel of the skin-friendly layer and the insulation layer, avoiding the foreign body sensation caused by interlayer friction.

[0019] This invention uses a biomimetic antibacterial temperature-regulating cloth as the inner and outer wrapping fabrics, connected by Velcro. This makes it convenient to use and clean. The Velcro is only located in the central area, on the back of the infant, allowing the inner and outer wrapping fabrics to be independently wrapped without interfering with each other. Figure 1 As shown, the Velcro structure is designed as a strip, which allows for greater flexibility in connecting the inner and outer wrapping fabrics. When the inner wrapping fabric is used to wrap the infant, the position of the inner wrapping fabric on the outer wrapping fabric can be freely adjusted, allowing the outer wrapping fabric to wrap the infant better.

[0020] The outer wrapping fabric has a double-layer structure. The outer layer is designed to be stain-resistant, slip-resistant, and breathable, while the inner layer is designed to be a heat-insulating elastic layer. This close fit between the inner heat-insulating elastic layer and the inner wrapping fabric ensures tight wrapping and insulation. The elastic structure prevents gaps between the outer and inner wrapping fabrics, thus avoiding reduced insulation. The outer stain-resistant, slip-resistant, and breathable layer provides contact stain resistance and slip resistance, while ensuring overall breathability.

[0021] The thermal insulation elastic layer is a knitted sandwich elastic structure, comprising an outer elastic knitted base fabric, an inner elastic knitted base fabric, and an elastic thermal insulation filler between the two base fabrics. The elastic knitted base fabric is formed by warp and weft knitting of spandex-viscose composite yarn (spandex content 12%-18% by weight), with an elongation ≥90%. The elastic thermal insulation filler is made of three-dimensional crimped hollow polyester staple fiber, with a denier of 3D-5D, a length of 38mm-51mm, and a hollowness ≥35% (the hollow structure can lock in still air). The filler density is 0.05g / cm³. 3 -0.08g / cm 3 Furthermore, it is connected to the inner and outer base fabrics via a "dot-like hot melt adhesive fixing" method (adhesive dots diameter 0.5mm-1mm, adhesive dot spacing 10mm×10mm), preventing the filler from shifting or clumping. The functional mechanism of the thermal insulation elastic layer (including filler) is as follows: the three-dimensional crimped hollow short fibers themselves possess excellent resilience (compression resilience ≥90%), combined with the spandex component of the outer / inner base fabric, resulting in a 100% tensile recovery rate ≥96% for the thermal insulation elastic layer. This allows it to closely conform to the shape changes of the inner wrapping fabric (such as infants rolling over or limbs curling up), with interlayer bonding gaps ≤0.8mm, completely avoiding the defects of traditional non-filler elastic layers such as "poor bonding and heat dissipation through gaps"; the hollow fiber's hollow ratio of over 35% can trap a large amount of still air (thermal conductivity ≤0.0). With a thermal resistance of 25W / (m・K), combined with the fluffy structure of the filling, the thermal resistance of the insulating elastic layer is increased to over 0.35m・K / W. Together with the phase change insulation layer of the inner wrapping fabric, it forms a three-layer insulation system of "active temperature regulation + passive temperature locking + filling temperature storage", which extends the maintenance time of infants' body surface temperature by 2-3 hours in low-temperature environments. The filling of the insulating elastic layer also has long-term stability: after 50 washes (40℃, neutral detergent), the filling does not clump or shift, and the compression rebound rate is still ≥88%, which can meet the high-frequency use needs of infant products.

[0022] The anti-fouling, anti-slip, and breathable layer is a modified warp-knitted mesh functional layer. The modified warp-knitted mesh uses environmentally friendly polyester warp-knitted mesh fabric as the base material. The mesh size of the base material is 0.1mm-0.3mm (balancing breathability and lint resistance), and the areal density is 20g / m³. 2 -28g / m 2The substrate is treated with an environmentally friendly water- and oil-repellent finishing agent through padding and baking, with the agent adhering to 5%-8% (based on substrate weight). Food-grade silicone micro-bumps are applied to the outer surface of the substrate using a dot-coating process. These micro-bumps have a diameter of 0.8mm-1.2mm, a height of 0.3mm-0.5mm, and a dot spacing of 5mm×5mm. The material of the micro-bumps is medical-grade liquid silicone. The anti-fouling, anti-slip, and breathable layer functions as follows: For anti-fouling, after water- and oil-repellent treatment, the substrate has a water contact angle ≥130° and a edible oil contact angle ≥110°. Common infant stains such as milk stains and baby food puree adhere to its surface in a "roll-off" manner (adhesion amount ≤5mg / cm³). 2 Furthermore, stains can be directly wiped away with a wet wipe; after 30 washes, the water contact angle remains ≥120°, and the stain resistance decay rate is ≤10%, meeting the needs of infant and toddler products that are "easily soiled and require frequent cleaning." The anti-slip function, with food-grade silicone micro-protrusions having a static friction coefficient ≥0.45 (the coefficient of friction with pure cotton sheets and knitted clothing), prevents the swaddle cloth from shifting during use due to infants turning over or moving their limbs (shift distance ≤2cm / 24h), solving the problems of traditional swaddle cloths being "easy to slip and loosely wrapped"; at the same time, the micro-protrusions are a flexible structure, preventing hard protrusions from injuring infants or causing discomfort. The breathable function, with a warp-knitted mesh substrate having an air permeability of ≥1800mm / s, matches the air permeability of the inner layer (thermal insulation elastic layer) of the outer wrapping fabric (≥1200mm / s), enabling efficient air circulation between the inside and outside of the wrapping fabric, keeping the humidity of the wrapped area at 40%-60% (the comfortable humidity range for the human body), and avoiding skin redness and rashes in infants and young children caused by stuffiness and heat.

[0023] Table 1: Phase transition temperatures of terpolymers of decanoic acid (CA), palmitic acid (PA), and stearic acid (SA) at different component ratios

[0024] Table 2: Comparison of Mimicry Antibacterial Temperature-Regulating Fabric with Ordinary Pure Cotton Baby Wrapping Fabric and Conventional Antibacterial Temperature-Regulating Fabric

[0025] As shown in Tables 1 and 2, compared with ordinary pure cotton baby swaddles and conventional antibacterial temperature-regulating fabrics, the biomimetic antibacterial temperature-regulating fabric of this invention adopts an inner and outer layer separation design with Velcro connection in the middle, and integrates multiple functions to adapt to all scenarios; the thermal resistance is increased by 20%-40%, and the three-layer system of "active temperature regulation + passive temperature locking + filling temperature storage" extends the temperature locking time by 2-3 hours; the temperature regulation efficiency is increased by 20%-50%, matching the comfortable temperature range of infants' skin; the antibacterial rate is increased by 10%-16%, and the natural components have no chemical residues; the water washing stability is increased by 28%-50%, adapting to the high-frequency water washing needs of infants; and the stain resistance is increased by 22%-67%, with stains such as milk stains / baby food puree adhering by rolling off (≤5mg / cm). 2 Easy to wipe; anti-slip effect improved by 40%-60%, shift ≤2cm in 24 hours, and the wrapping is not easy to loosen; breathability improved by 38%-80%, humidity in the wrapped area is maintained at 40%-60%, avoiding redness and rashes; dotted hot melt adhesive fixation + high-quality fibers, strong structural stability, and extended service life; gaps reduced by 40%-67%, reducing heat loss and improving heat preservation efficiency; easy to use / clean, free to adjust, and no interference between layers.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A biomimetic antibacterial constant temperature fabric, characterized in that: The biomimetic antibacterial temperature-regulating fabric is used for wrapping infants and young children, and has an outer wrapping fabric and an inner wrapping fabric. The outer wrapping fabric and the inner wrapping fabric are connected in the middle by a Velcro structure. The inner wrapping fabric has a three-layer structure: an outer layer is a heat-insulating layer, a middle layer is an antibacterial layer, and an inner layer is a skin-friendly layer. The heat-insulating layer is a phase change energy storage type temperature-regulating heat-insulating layer, which is woven from a blend of base fiber and fatty acid phase change microcapsules. The base fiber is selected from soft polyester staple fiber or viscose fiber. The encapsulation wall material of the fatty acid phase change microcapsules is polyamide, the particle size of the microcapsules is 1μm-5μm, and the fatty acid phase change material loaded inside is a mixture of palmitic acid and stearic acid. The mass percentage of the fatty acid phase change microcapsules in the heat-insulating layer is 15%-25%.

2. The biomimetic antibacterial constant temperature fabric according to claim 1, characterized in that: The fatty acid phase change material is a ternary blend of decanoic acid, palmitic acid, and stearic acid, with the following component ratio: 60% decanoic acid (CA): 25% palmitic acid (PA): 15% stearic acid (SA).

3. The biomimetic antibacterial constant temperature fabric according to claim 1, characterized in that: The antibacterial layer is a composite antibacterial functional layer, which uses bamboo fiber spunlace nonwoven fabric as the substrate, and the areal density of the substrate is 20 g / m³. 2 -30g / m 2 The substrate is loaded with microencapsulated natural antibacterial components. The wall material of the microcapsules is water-soluble polyurethane. The antibacterial components encapsulated inside are a compound of bamboo quinone extract and chitosan quaternary ammonium salt. The particle size of the microcapsules is 2μm-4μm, and the loading amount in the antibacterial layer is 8%-12%.

4. The biomimetic antibacterial constant temperature fabric according to claim 1, characterized in that: The Velcro structure is configured as a strip.

5. The biomimetic antibacterial constant temperature fabric according to claim 1, characterized in that: The outer wrapping fabric has a double-layer structure, with the outer layer being a stain-resistant, slip-resistant, and breathable layer, and the inner layer being a heat-insulating and elastic layer.

6. The biomimetic antibacterial constant temperature fabric according to claim 5, characterized in that: The thermal insulation elastic layer is a knitted sandwich elastic structure, including an outer elastic knitted base fabric, an inner elastic knitted base fabric, and an elastic thermal insulation filler between the two base fabrics.

7. The biomimetic antibacterial constant temperature fabric according to claim 6, characterized in that: The elastic knitted base fabric is formed by warp and weft knitting of spandex-viscose composite yarn; the elastic thermal insulation filling material is selected from three-dimensional crimped hollow polyester staple fiber.

8. The biomimetic antibacterial constant temperature fabric according to claim 5, characterized in that: The anti-fouling, anti-slip, and breathable layer is a modified warp-knitted mesh functional layer. The modified warp-knitted mesh uses environmentally friendly polyester warp-knitted mesh fabric as the base material. The mesh size of the base material is 0.1mm-0.3mm, and the areal density is 20g / m³. 2 -28g / m 2 The substrate is treated with an environmentally friendly water- and oil-repellent finishing agent through padding and baking; the outer surface of the substrate is coated with food-grade silicone micro-bumps using a dot coating process, and the material of the micro-bumps is medical-grade liquid silicone.

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