Highly breathable physiotherapy type three-dimensional elastic netted home textile substrate and preparation method thereof

Abstract

This invention relates to a highly breathable, therapeutic, three-dimensional elastic mesh home textile substrate and its preparation method. More specifically, it relates to a method for preparing a breathable, therapeutic, three-dimensional elastic mesh home textile substrate, the breathable, therapeutic, three-dimensional elastic mesh home textile substrate, a therapeutic mesh padding layer comprising the substrate, and home textile products. This invention achieves a home textile substrate with soft drape, a microgravity feel, and the sustained-release effect of traditional Chinese medicine sleep-aiding essential oils, as well as water resistance, by constructing a composite production system of heat-resistant core-shell structured microcapsules and high-performance thermoplastic elastomer materials, and by precisely controlling the microenvironment of the molding area.

Description

Technical Field

[0001] This invention pertains to thermoplastic elastomer three-dimensional air fiber home textile materials, specifically relating to a highly breathable, therapeutic three-dimensional elastic mesh home textile substrate and its preparation method. Background Technology

[0002] Traditional summer quilts, mats, and other summer home textile products often use synthetic fibers and latex as fillings, which have problems such as poor breathability and easy clumping or shedding after prolonged use. At the same time, in order to achieve the effect of calming the nerves and promoting sleep, sleep-aiding chemical additives are usually applied to the fabric through printing or stretching finishing, which affects the comfort of the fabric to the touch and has poor water resistance.

[0003] Air fiber, as a novel breathable material, offers significant advantages in addressing the breathability issues of summer home textiles and furniture. However, conventional air fiber production technology is generally suitable for supportive applications such as pillows and mattresses. When used as a base material for home textiles, it suffers from excessive stiffness and insufficient drape. If the filament diameter or density is too low, it generally cannot be effectively molded, resulting in poor durability. Furthermore, due to the high production temperature and long high-temperature melting time, conventional herbal essential oil microcapsules, typically with a temperature resistance of ≤130℃, cannot be melt-blended with thermoplastic elastomer three-dimensional air fiber, or the essential oil retention rate is low. Limited by cost and technical issues, the preparation of high-breathability therapeutic three-dimensional elastic mesh home textile base materials loaded with herbal essential oil microcapsules and the resulting home textile products remain largely untapped in the market. Summary of the Invention

[0004] This invention utilizes a three-dimensional mesh structure, formed by intertwining multiple filaments of molten resin and partially heat-melting and welding, as the substrate. The structure, with over 90% of its space filled with air, ensures sufficient breathability for the home textile substrate, while the hydrophobic material allows for quick washing and drying. By constructing a composite production system combining heat-resistant core-shell microcapsules with high-performance thermoplastic elastomer materials, and precisely controlling the microenvironment of the molding area, a home textile substrate is achieved that possesses soft drape, a slight weightless feel, and also incorporates the slow-release effects of traditional Chinese medicine sleep-aiding essential oils, while remaining water-resistant.

[0005] One aspect of the present invention relates to a method for preparing a breathable, therapeutic, three-dimensional elastic mesh home textile substrate, characterized by comprising the following steps:

[0006] a. The dried thermoplastic elastomer mixture is melt-extruded, and the extruded filaments fall freely into an insulated and sealed area at 70 to 200°C to form a three-dimensional network structure;

[0007] The thermoplastic elastomer blend material comprises a thermoplastic elastomer and a microcapsule masterbatch of traditional Chinese medicine essential oils;

[0008] b. Under the action of the self-rotating forming roller, the three-dimensional mesh structure is cooled and shaped to obtain the breathable physiotherapy type three-dimensional elastic mesh home textile substrate.

[0009] In one embodiment of the present invention, the forming roller is provided with continuous and uniform shallow rhomboid or dotted anti-slip micro-patterns.

[0010] In one embodiment of the invention, a melt extrusion is performed using an extruder, wherein the screw temperature of the extruder is set to 160 to 240°C, so that the mixed material forms a melt and is then extruded through a perforated spinneret.

[0011] In one embodiment of the invention, the rotational speed of the forming roller is 0.1 to 3 r / min. In another embodiment of the invention, in step b, the three-dimensional mesh structure is cooled and shaped by a cooling water bath, and at least one-third of the height of the forming roller is above the cooling water surface.

[0012] Another aspect of the present invention relates to a breathable, therapeutic, three-dimensional elastic mesh home textile substrate, characterized in that the home textile substrate is formed by winding filaments of a thermoplastic elastomer blend.

[0013] The thermoplastic elastomer blend comprises a thermoplastic elastomer and a microcapsule masterbatch of traditional Chinese medicine essential oil dispersed in the thermoplastic elastomer, wherein, based on the total weight of the thermoplastic elastomer and the microcapsule masterbatch, the weight percentage of the thermoplastic elastomer is 94% to 100%, and the weight percentage of the microcapsule masterbatch is 0% to 6%.

[0014] The bulk density of the home textile substrate is 0.015 to 0.080 g / cm³. 3 The diameter of the single filament is 0.1 to 0.5 mm, and the indentation hardness is 5 to 80 N.

[0015] In one embodiment of the present invention, the thermoplastic elastomer is one or more of the following: polyolefin POE / metallocene PE, polyester TPEE, polyurethane TPU, styrene, silicone rubber TPSIV, and nylon elastomer TPAE.

[0016] In one embodiment of the present invention, the herbal essential oil microcapsule masterbatch comprises herbal essential oil microcapsules, a carrier substrate, a dispersing lubricant, and an antioxidant. Based on the total weight of the herbal essential oil microcapsules, the carrier substrate, the dispersing lubricant, and the antioxidant, the weight percentage of the herbal essential oil microcapsules is 20% to 50%, the weight percentage of the carrier substrate is 33% to 79.5%, the weight percentage of the dispersing lubricant is 0.5% to 2%, and the weight percentage of the antioxidant is 0% to 15%.

[0017] In one embodiment of the present invention, the herbal essential oil microcapsule masterbatch comprises herbal essential oil microcapsules, wherein the active substance in the core of the herbal essential oil microcapsules is selected from at least one of the following: calamus essential oil, sandalwood essential oil, perilla leaf essential oil, lavender essential oil, bergamot essential oil, and green tangerine peel essential oil.

[0018] In one embodiment of the present invention, the herbal essential oil microcapsule masterbatch comprises herbal essential oil microcapsules, wherein the capsule wall material of the herbal essential oil microcapsules is selected from at least one of modified melamine-formaldehyde resin, cross-linked polyurea, cross-linked acrylate copolymer, or organic-inorganic bilayer hybrid wall material.

[0019] In one embodiment of the present invention, the herbal essential oil microcapsule masterbatch comprises herbal essential oil microcapsules, wherein the heat resistance temperature of the herbal essential oil microcapsules is greater than or equal to 180°C and the average particle size is 1 μm to 15 μm.

[0020] Another aspect of the present invention relates to a therapeutic mesh pad, characterized in that it comprises the above-described home textile substrate or a home textile substrate prepared by the above method, wherein the mesh pad has a thickness of 4 to 10 mm and a bulk density of 0.015 to 0.035 g / cm³. 3 Or 0.055 to 0.080 g / cm³ 3 The monofilament diameter is 0.1 to 0.3 mm, and the air permeability is greater than or equal to 4500 mm / s.

[0021] Another aspect of the present invention relates to home textile products, characterized in that they include the aforementioned therapeutic mesh padding layer.

[0022] The preparation process of this invention is simple, the parameters are controllable, and it is easy to scale up production. It can be widely used in various sleep-aiding home textile products such as cooling mats, cooling blankets, and filling blankets, and has a broad market prospect. Attached Figure Description

[0023] Figure 1 This is a SEM image of a microcapsule masterbatch according to one embodiment of the present invention.

[0024] Figure 2 This is a SEM image of thermoplastic elastomer particles according to one embodiment of the present invention.

[0025] Figure 3 SEM image of a traditional Chinese medicine essential oil microcapsule loaded on a three-dimensional elastic mesh home textile substrate, according to one embodiment of the present invention.

[0026] Figure 4 This is a particle size test of the microcapsules of traditional Chinese medicine essential oils in Example 1 of the present invention.

[0027] Figure 5 This is a rendering of the appearance of a three-dimensional elastic mesh home textile substrate according to one embodiment of the present invention.

[0028] Figure 6 This is a schematic diagram of a high-breathability, therapeutic, three-dimensional elastic mesh home textile substrate production device according to one embodiment of the present invention.

[0029] Figure 7 This is a schematic diagram of the spinneret structure of the summer quilt core production device according to Embodiment 1 of the present invention.

[0030] In the attached diagram, 1: dehumidifying dryer; 2: extrusion system; 3: die head; 4: heat-insulated sealed area; 5: forming roller; 6: cooling water bath; 7: spinneret. Detailed Implementation

[0031] This disclosure will be described in more detail below to aid in understanding it.

[0032] For illustrative purposes, the principles of this disclosure are described by reference to various exemplary embodiments thereof. Before detailing embodiments of this disclosure, it should be understood that this disclosure is not limited in its application to the details of any particular embodiment disclosed herein. The terminology used herein is for descriptive purposes and not for limitation.

[0033] In the following description, some implementations may be embodied as methods. The actions performed as part of the methods may be ordered in any suitable manner. Thus, implementations in which actions are performed in a different order than those shown may be constructed, which may include actions that are different from those described (e.g., more or fewer), and / or may involve performing some actions simultaneously, even if these actions are shown to be performed sequentially in the implementations specifically described above.

[0034] As used throughout, a range is used as a shorthand to describe the individual values ​​within the range and each value. Any value within the range can be chosen as an endpoint of the range. Thus, the ranges 1 to 5 specifically include 1, 2, 3, 4, and 5, as well as subranges such as 2 to 5, 3 to 5, 2 to 3, 2 to 4, 1 to 4, etc.

[0035] This invention aims to overcome the shortcomings of existing technologies and provide a highly breathable, therapeutic three-dimensional elastic mesh home textile substrate and its preparation method. By constructing a composite system of heat-resistant core-shell microcapsules and a high-performance three-dimensional fiber matrix, this invention achieves a synergistic effect of high breathability, soft drape, washability, and long-lasting sleep-aiding functions, addressing the technical limitations of existing sleep-aiding materials. This improves the sleep comfort of summer home textile products.

[0036] To achieve the above objectives, the present invention adopts the following technical solution.

[0037] This invention discloses a highly breathable, therapeutic three-dimensional elastic mesh home textile substrate and its preparation method. The substrate is formed by tightly wound, heat-sealed, and self-adhesive hot-melt winding of 0.1 to 0.5 mm thermoplastic elastic monofilaments. 0 to 6 parts of high-temperature resistant traditional Chinese medicine essential oil microcapsule masterbatch can be added to the raw materials, with a bulk density of 0.015 to 0.080 g / cm³. 3 The thickness ranges from 4 to 20 mm, with an air permeability > 4000 mm / s. During preparation, the raw materials are first dehumidified and dried to control moisture content. Then, the melt is extruded through spinnerets into a temperature-controlled, sealed cavity for slow cooling and winding. It is then shaped using forming rollers with anti-slip patterns. The finished product can be ultrasonically / quilted for fixation and used in summer home textile products such as mats, pillowcases, and quilts. This invention uses thermoplastic high-elasticity matrices such as TPEE / TPU, with microcapsules embedding fibers to achieve a long-lasting, water-washable, sustained-release therapeutic effect. The sealed, slow-cooling process significantly improves the bonding strength of the fibers, allowing for stable mass production. Simultaneously, the ultra-high breathability substrate has a porosity of over 90%, preventing sweating in summer and providing a warm yet breathable effect when paired with thermal fabrics. This invention is simple to operate, has good process stability, and is easy to control in production.

[0038] One embodiment of the present invention relates to a highly breathable, therapeutic, three-dimensional elastic mesh home textile substrate, characterized in that: the home textile substrate comprises an integral three-dimensional mesh structure formed by melt extrusion of thermoplastic elastomer monofilaments, random interlacing and self-bonding at the intersection points of the filament bundles. The three-dimensional mesh structure comprises, by weight, 94% to 100% thermoplastic elastomer and 0% to 6% sustained-release microcapsule masterbatch of traditional Chinese medicine essential oils. The thermoplastic elastomer constituting the three-dimensional mesh structure can be one or more selected from polyolefin POE / metallocene PE, polyester TPEE, polyurethane TPU, styrene, silicone rubber TPSIV, nylon elastomer TPAE, etc. The material system is integrally formed through melt blending and spinning processes. The highly breathable, therapeutic, three-dimensional elastic mesh home textile substrate has one or more of the following: bulk density of 0.015 to 0.080 g / cm³. 3 The yarn diameter is 0.1 to 0.5 mm, the thickness is 4 to 20 mm, and the air permeability is greater than 4000 mm / s. The substrate is combined with the fabric by at least one of quilting or ultrasonic welding and then fixed and sealed to form a calming and sleep-aiding product with the slow-release effect of traditional Chinese medicine essential oils. It is suitable for use as summer home textile products such as cooling mats, pillowcases, cooling quilts, fitted sheets, and stuffed quilts.

[0039] One embodiment of the present invention relates to an ultrathin therapeutic cooling mesh pad, characterized in that it has a defined structure of the aforementioned three-dimensional elastic mesh substrate; the mesh structure has a thickness of 4 to 10 mm and a bulk density of 0.015 to 0.035 g / cm³. 3 Or 0.055 to 0.080 g / cm 3The monofilament diameter is 0.1 to 0.3 mm, and the air permeability is ≥4500 mm / s. This ultra-thin therapeutic cooling mesh pad can be used to prepare sheet-like ultra-thin summer home textile products such as cooling mats and pillowcases.

[0040] In one embodiment of the present invention, the thermoplastic elastomer is a single-grade elastomer pure material and is not blended with other elastomers.

[0041] In one embodiment of the present invention, the thermoplastic elastomer is a blend of two or more different types of elastomers, or a mixture system containing other fillers and functional components.

[0042] In one embodiment of the present invention, the active ingredient in the core of the herbal essential oil microcapsule is selected from at least one of the following: Acorus calamus essential oil, sandalwood essential oil, perilla leaf essential oil, lavender essential oil, bergamot essential oil, and green tangerine peel essential oil. The herbal essential oil microcapsule is a sustained-release type, and the capsule wall material is selected from at least one of the following: modified melamine-formaldehyde resin, cross-linked polyurea, cross-linked acrylate copolymer, or organic-inorganic bilayer hybrid wall material.

[0043] The heat resistance temperature of the microcapsules of Chinese herbal essential oils is ≥180℃ and / or the average particle size is 1 μm to 15 μm.

[0044] The herbal essential oil microcapsule masterbatch comprises herbal essential oil microcapsules (high-temperature resistant herbal essential oil microcapsules), a carrier substrate, a dispersant / lubricant, and an antioxidant. The carrier substrate of the herbal essential oil microcapsule masterbatch is selected from at least one of the following: polyester thermoplastic elastomer (TPEE), polyurethane (TPU), polyolefin elastomer (POE), and ethylene-vinyl acetate copolymer (EVA). The weight percentages of each component in the herbal essential oil microcapsule masterbatch are as follows:

[0045] Carrier substrate 33 to 79.5

[0046] High-temperature resistant Chinese herbal essential oil microcapsules 20 to 50

[0047] Dispersing lubricant 0.5 to 2

[0048] Antioxidant 0 to 15

[0049] The three-dimensional elastic mesh home textile substrate is formed by intertwining and self-adhesion of filaments, possessing a certain tensile strength. The indentation hardness of the substrate is 5 to 80 N.

[0050] The amount of traditional Chinese medicine essential oil microcapsule masterbatch added to the three-dimensional elastic mesh home textile substrate is 1 to 3%.

[0051] The structure is 10 to 20 mm thick and is suitable for all-season fillings and thick, cool quilts.

[0052] Another invention relates to a method for preparing a highly breathable, therapeutic three-dimensional elastic mesh home textile substrate, characterized by comprising the following steps:

[0053] First, prepare the thermoplastic elastomer mixture: according to the formula ratio, add thermoplastic elastomer granules, traditional Chinese medicine essential oil microcapsule masterbatch, etc. to the mixing tank in sequence, and start stirring for 10 to 30 minutes.

[0054] The above-mentioned well-stirred mixture is loaded into a dehumidifying dryer, the temperature is set to 60 to 120°C, and it is dried at a constant temperature for 0.5 to 4 hours. The moisture content of the material is controlled to be ≤0.1%. After dehumidification and drying, it is sealed and kept warm before being transported to the extrusion system.

[0055] The mixed raw materials are processed by the screw of the extruder, with the screw temperature increasing from 160 to 240°C in stages, to fully mix and melt them into a uniform melt.

[0056] The melt is extruded through a porous spinneret, and the filaments enter the insulated and sealed area. During the free fall, they coil and entwine, and the contact parts remain molten and self-adhere to form a three-dimensional network structure with a certain tensile strength.

[0057] Under the action of the self-rotating forming roller, the three-dimensional mesh structure is cooled and shaped by the cooling water bath, and then guided out by the traction roller to form a three-dimensional elastic mesh home textile substrate.

[0058] The temperature of the insulated and sealed area is controlled at 70 to 200°C. The ambient temperature inside the insulated and sealed cavity (temperature of the insulated and sealed area) is higher than the crystallization cooling temperature of the elastomer, so as to delay the solidification of the monofilament surface and improve the thermal fusion bonding strength at the intersection.

[0059] The forming roller rotates at a speed of 0.1 to 3 r / min. The surface of the forming roller is provided with continuous, uniform, shallow diamond-shaped or dotted anti-slip micro-patterns. At least one-third of the height of the forming roller is above the cooling water surface. The forming roller with continuous, uniform, shallow diamond-shaped or dotted anti-slip micro-patterns rotates at a speed of 0.1 to 3 r / min.

[0060] The fibers extruded through the spinneret fall into a constant temperature, sealed area of ​​70 to 200°C, and are paired with a self-rotating forming roller with anti-slip pattern to ensure sufficient adhesion even with a sufficiently fine filament diameter (0.1 to 0.3 mm).

[0061] The fabrics used in the summer home textile products can be cooling fabrics, knitted super soft fabrics, highly breathable fabrics, short-pile and terry fabrics, or various functional fabrics such as moisture-absorbing and heat-generating, far-infrared emitting, negative ion, antibacterial and deodorizing, and home textile products can be prepared by combining ultrasonic welding or quilting, embroidery and other methods.

[0062] This invention discloses a highly breathable, therapeutic three-dimensional elastic mesh home textile substrate and its preparation method. The substrate utilizes a thermoplastic three-dimensional mesh structure formed by intertwining multiple filaments of molten resin and partially heat-melting and welding. The three-dimensional mesh inherently possesses irregular breathable channels, resulting in excellent breathability and preventing heat buildup and sweating in all seasons. The resin material is washable, facilitating daily cleaning and maintenance. Furthermore, by preparing core-shell microcapsules with a temperature resistance of over 180℃ using plant essential oils extracted from at least one of the following traditional Chinese medicines with calming and sleep-aiding effects: *Acorus calamus* essential oil, sandalwood, perilla leaf essential oil, lavender essential oil, bergamot essential oil, and *Citrus reticulata* tangerine peel essential oil, the feasibility of extruding these microcapsules into a composite system with thermoplastic elastomer materials is realized. To ensure the softness and drape of the thermoplastic three-dimensional mesh structure as a filling base material for home textiles, a filament diameter of 0.1 to 0.5 mm is preferred, with 0.1 to 0.3 mm being the most ideal. By setting the fiber forming zone as a temperature-controlled, insulated, sealed cavity combined with a self-rotating forming roller with continuous, uniform grooves, the heat-melt bonding strength at the intersections is ensured, achieving water-resistant performance. The ultra-fine filament diameter combined with the three-dimensional mesh structure achieves high air permeability. Simultaneously, microcapsules of traditional Chinese medicine essential oils are loaded on the surface and inside the thermoplastic three-dimensional mesh structure fibers. Through friction and compression, the essential oils are released, achieving a long-lasting, sustained release with a light and pleasant aroma that promotes relaxation and sleep.

[0063] The invention will be illustrated in more detail below by way of examples.

[0064] The weight ratios of the components in the embodiments are shown in Table 1.

[0065] Table 1. Weight proportions of each component in the examples

[0066]

[0067] Example 1

[0068] The herbal essential oil and microcapsule wall material of the first embodiment of this invention were used to prepare herbal essential oil microcapsules via in-situ polymerization. First, a hydroxymethyl melamine prepolymer was synthesized under weakly alkaline conditions, wherein the molar ratio of melamine to formaldehyde was 1:2.5. Then, this prepolymer was gradually added to a lavender essential oil emulsion at a dropping rate of 1.5 mL / min. The lavender essential oil emulsion consisted of the following components by weight: 30 parts lavender essential oil, 3 parts camellia oil, 2.7 parts SMA styrene-maleic anhydride copolymer (5% aqueous solution), 0.9 parts Tween 80, and 63.4 parts deionized water. The pH of the system was slowly adjusted from 5 to 5.5, the temperature was raised to 70 to 75°C, and polymerization was maintained at this temperature for approximately 4 hours with a stirring speed of 800 r / min. Finally, the mixture was cured in three stages at a gradient from 80°C to 130°C to eliminate porosity and internal stress in the wall material. The resulting microcapsules had an encapsulation efficiency of ≥82%, a heat resistance temperature of 180℃, and an average particle size of 3.5 μm.

[0069] Then, according to Example 1, using thermoplastic polyester elastomer (TPEE) as the carrier substrate, 0.5 parts of dispersant lubricant polyethylene wax and 10 parts of antioxidant (including 6 parts of antioxidant 3114 and 4 parts of UV-326) were added by weight to obtain the herbal essential oil microcapsule masterbatch. Three parts of the above herbal essential oil microcapsule masterbatch were mixed with 97 parts of thermoplastic polyester elastomer (TPEE) and extruded according to the preparation method of a highly breathable, therapeutic, three-dimensional elastic mesh home textile substrate. The raw material was dehumidified and dried at 80°C for 2 hours. A five-stage screw temperature was set from 180 to 220°C, with a 10°C interval between adjacent screws from the first to the fifth stage, gradually increasing the temperature to fully mix and melt to form a uniform melt. The fibers extruded through solid spinnerets with a diameter of 0.6 mm fell into a constant-temperature, sealed area at 160°C. During the descent, the filament diameter was further stretched, and simultaneously, before contacting the water surface, it coiled and bonded, forming a three-dimensional mesh structure with tensile strength. The above mesh structure is shaped by a forming roller with a shallow diamond grid on the surface and a rotation speed of 2 r / min. It is then introduced into a cooling water bath at a temperature of 30°C for shaping. After completion, it is pulled out by a traction roller to form a three-dimensional elastic mesh home textile substrate.

[0070] The three-dimensional elastic mesh home textile substrate has a bulk density of 0.035 g / cm³. 3 The wire diameter is 0.1 to 0.2 mm and the thickness is 8 mm.

[0071] The lavender microcapsule-loaded three-dimensional elastic mesh home textile substrate produced by the above process is used as the summer comforter core, and the front of the comforter cover is made of 180 g / m² material. 2 The summer quilt is made of a cool-feeling nylon-ammonia fabric on the one side and a knitted liquid ammonia mercerized ultra-soft pure cotton fabric on the other side, using a multi-needle quilting process.

[0072] The three-dimensional elastic mesh home textile substrate prepared above was sampled and tested as follows: the hardness of the substrate was tested according to GB / T 10807; the air permeability of the sample was tested according to GB / T 5453; the test results are shown in Table 2.

[0073] The washability of the high-breathability, therapeutic three-dimensional elastic mesh summer quilt of this invention was tested according to the GB / T 8629-2017 standard 5A household washing procedure. Washing conditions: 40℃ water temperature, neutral standard detergent, washing for 15 minutes, routine spin-drying, and air drying at room temperature. 0, 5, 10, 15, and 20 washing cycles were completed respectively. The durability of the herbal microcapsule therapeutic function was evaluated by artificial sensory evaluation of fragrance retention. The test results are shown in Table 2.

[0074] The artificial sensory longevity rating mentioned above is:

[0075] Test environment: Constant temperature 25℃, sealed and odorless test chamber;

[0076] Rating criteria (0 to 5):

[0077] Level 5: Rich and clear herbal calming aroma;

[0078] Level 4: Distinctly stable aroma;

[0079] Level 3: Faint but still clearly identifiable;

[0080] Level 2: Faint fragrance, only present after rubbing;

[0081] Level 1: Almost tasteless;

[0082] Grade 0: Absolutely no essential oil scent;

[0083] Procedure: After each wash and dry, let it stand for 24 hours, and then three professionals will conduct an independent blind evaluation and take the average value.

[0084] Example 2

[0085] Using the traditional Chinese medicine essential oil and microcapsule wall material from the second embodiment of this invention, cross-linked acrylate microcapsules were prepared by free radical interfacial in-situ polymerization. The raw material mass parts are as follows:

[0086] Oil phase: 35 parts of Acorus tatarinowii essential oil, 22 parts of methyl methacrylate, 12 parts of butyl acrylate, 3 parts of 1,4-butanediol diacrylate crosslinking agent, 0.8 parts of azobisisobutyronitrile, and 0.2 parts of BHT antioxidant;

[0087] Aqueous phase: 120 parts deionized water, 1.8 parts sodium dodecyl sulfate, 1.2 parts PVP-K30 dispersant;

[0088] Process steps: An oil phase is prepared at 25℃ and an aqueous phase is dissolved at 40℃; the oil phase is slowly added dropwise to the aqueous phase, followed by high-speed shearing at 10,000 rpm for 15 min to obtain an oil-in-water emulsion with an average particle size of 7 μm; prepolymerization is carried out at 65℃ for 2 h under nitrogen protection, followed by deep crosslinking polymerization at 82℃ for 4 h; the microcapsules are obtained by cooling, centrifugation, washing three times with water, and vacuum drying at 45℃. The resulting microcapsule walls are crosslinked acrylate three-dimensional network copolymers with a heat resistance temperature of 186℃, an average particle size of 7 μm, and no free formaldehyde. According to this embodiment, after blending and granulation with an EVA carrier, the capsule walls remain intact without cracking during melt spinning at 195℃, and the essential oil retention rate inside the substrate is 58% after 20 water washes, making it suitable for the high-breathability, therapeutic three-dimensional elastic mesh home textile substrate of this invention.

[0089] Two parts of the above-mentioned herbal essential oil microcapsule masterbatch were mixed with 98 parts of thermoplastic polyolefin elastomer (POE) and extruded according to the preparation method of a highly breathable, therapeutic three-dimensional elastic mesh home textile substrate. The raw material was dehumidified and dried at 60℃ for 0.5 hours. A five-stage screw temperature range of 150-190℃ was set, with a 10℃ interval between adjacent screws from the first to the fifth stage, allowing for thorough mixing and melting to form a uniform melt. The extruded fibers fell into a constant-temperature, sealed area at 88℃. During the descent, the fiber diameter was further stretched, and the fibers coiled and wound before contacting the water surface. The contact area melted and bonded to form a three-dimensional mesh structure with tensile strength. This mesh structure was then introduced into a cooling water bath at 22℃ under the action of a forming roller with a shallow diamond grid depth of 1 mm and a rotation speed of 2 r / min for shaping. After completion, it was guided out by a traction roller to form a three-dimensional elastic mesh home textile substrate.

[0090] The aforementioned three-dimensional elastic mesh home textile substrate has a bulk density of 0.03 g / cm³. 3 The wire diameter is 0.25 to 0.35 mm and the thickness is 10 mm.

[0091] The three-dimensional elastic mesh home textile substrate loaded with Acorus calamus microcapsules produced by the above process is used as the core material of the cooling mat, and the outer cover is made of 180 g / m² material. 2 The reverse side uses a nylon-spandex cooling fabric with a 170 g / m² texture. 2 Large-mesh polyester warp-knitted fabric is used to make cooling mats by ultrasonic welding, with diamond patterns of 18 cm on each side.

[0092] The three-dimensional elastic mesh home textile substrate and cooling mat products prepared above were tested for application performance in the same manner as in Example 1. The test results are shown in Table 2.

[0093] Example 3

[0094] The traditional Chinese medicine essential oil and microcapsule wall material of the third embodiment of this invention were used to prepare traditional Chinese medicine essential oil microcapsules through in-situ polymerization. The inner layer of the microcapsule is lavender essential oil encapsulated in melamine resin, and the outer layer is a non-based barrier layer in-situ composited with nano-SiO2 inside the melamine resin capsule wall. The traditional Chinese medicine essential oil microcapsules prepared by this method have the characteristics of shear resistance, resistance to long-term high-temperature static storage, and a longer sustained-release period. The heat resistance temperature is 240℃, and the average particle size is 5 μm. The specific preparation process is as follows:

[0095] a) Synthesis of high-temperature resistant melamine-formaldehyde (MF) prepolymer: The molar ratio of melamine to 37% formaldehyde solution was 1:2.4 to 2.6. The pH was adjusted to 8.5 to 9.0 with 20% NaOH. The temperature was raised to 75 to 80°C and maintained for 45 min until the solution became a transparent viscous liquid. Then, the temperature was lowered to 50°C, and fumed nano-SiO2 and PVA were added. The mixture was ultrasonically dispersed for 10 min to obtain the modified MF prepolymer, which was then sealed for later use.

[0096] b) Preparation of lavender essential oil stabilized O / W emulsion: Prepare a 5% SMA aqueous solution, add Tween 80, and stir until homogeneous as the aqueous phase. Slowly add lavender essential oil and emulsify using a high-shear homogenizer at 10,000 r / min for 15 min. Stir at low speed (600 r / min) and maintain the temperature at 45°C until the emulsion does not separate and the oil droplet size is 2 to 4 μm.

[0097] c) Preparation of double-layer dense wall microcapsules: The essential oil emulsion was transferred to a reactor with a reflux condenser, and the stirring speed was 800 r / min. Half of the modified MF prepolymer was slowly added dropwise, and the pH was adjusted to 5.2 to 5.5 with glacial acetic acid. The temperature was raised to 70℃ and polymerized for 1.5 h. Then, the remaining MF prepolymer was added dropwise to the system, the pH was maintained at 5.0 to 5.3, and the temperature was raised to 75℃ and polymerized for 2 h. The prepolymer was deeply cross-linked to thicken the wall layer, and the nano-SiO2 inside the wall material formed covalent cross-links with the hydroxyl groups of the melamine resin.

[0098] d) Gradient high-temperature curing: Curing was performed at 85℃, 110℃, and 130℃ for 1 to 2 hours respectively, followed by natural cooling to room temperature. Finally, the mixture was centrifuged, washed with water and alcohol, and dried under low-temperature vacuum to obtain flowable powder microcapsules.

[0099] According to this embodiment, using thermoplastic polyurethane (TPU) as the carrier substrate, 1 part of dispersant lubricant and 15 parts of antioxidant are added by weight. 40 parts of traditional Chinese medicine essential oil microcapsules are prepared according to the above steps, with the TPU carrier substrate as the remainder, to obtain a masterbatch of traditional Chinese medicine essential oil microcapsules. 1.5 parts of the above masterbatch of traditional Chinese medicine essential oil microcapsules are mixed with 98.5 parts of thermoplastic polyurethane (TPU) and extruded according to the preparation method of a highly breathable, therapeutic, three-dimensional elastic mesh home textile substrate. The raw material is dehumidified and dried at 100°C for 1.5 hours. A five-stage screw temperature is set from 190 to 240°C, with an interval of 10 to 15°C between adjacent screws from the first to the fifth stage, gradually increasing the temperature to fully mix and melt to form a uniform melt. The extruded fibers fall into a constant-temperature, sealed area at 175°C. During the descent, the filament diameter is further stretched, and it coils and winds before contacting the water surface. The contact area melts and bonds to form a three-dimensional mesh structure with tensile strength. The above mesh structure is shaped by a forming roller with a surface depth of 0.5 mm and a rotation speed of 1.5 r / min. It is then introduced into a cooling water bath at a temperature of 34°C for shaping. After completion, it is pulled out by a traction roller to form a three-dimensional elastic mesh home textile substrate.

[0100] The aforementioned three-dimensional elastic mesh home textile substrate has a bulk density of 0.056 g / cm³. 3 The wire diameter is 0.1 to 0.2 mm and the thickness is 6 mm.

[0101] The lavender microcapsule-loaded three-dimensional elastic mesh home textile substrate produced by the above process is used as the pillowcase filling material, with 180 g / m² selected for the front of the pillowcase. 2 Made of nylon-spandex cooling fabric, with negative ion polyester fabric on the reverse side, this pillowcase is highly breathable and crafted using a single-needle quilting process.

[0102] The three-dimensional elastic mesh home textile substrate and the highly breathable pillowcase product prepared above were tested for application performance in the same manner as in Example 1. The test results are shown in Table 2.

[0103] Example 4

[0104] Traditional Chinese medicine essential oil microcapsules were prepared by interfacial polymerization using the traditional Chinese medicine essential oil and microcapsule wall material according to the fourth embodiment of the present invention. The raw material mass parts are as follows:

[0105] Oil phase: 100 parts sandalwood herbal essential oil, 18 to 25 parts hexamethylene diisocyanate;

[0106] Aqueous phase: 400 parts deionized water, 2.5 to 3.5 parts composite emulsifier (Tween 80 + sodium dodecyl sulfate), 6 to 10 parts ethylenediamine crosslinking agent;

[0107] The specific preparation process is as follows:

[0108] Step 1: Oil phase preparation: At room temperature, slowly dissolve aliphatic hexamethylene diisocyanate in the essential oil, stir at low speed to obtain a clear and homogeneous oil phase system, seal and protect from light for later use, and avoid contact with moisture throughout the process.

[0109] Step 2: Preparation of aqueous emulsion system: Add deionized water to the reactor, add compound emulsifier in batches, stir to dissolve completely for 10 min to form a transparent and uniform aqueous solution, and control the initial temperature to 35 to 40℃.

[0110] Step 3: Preparation of homogeneous emulsion: The prepared oil phase is slowly and uniformly added to the aqueous phase, and homogenized for 12 min using a high-shear homogenizer at 10000 r / min to disperse the oil phase into micron-sized uniform oil droplets, forming a stable oil-in-water emulsion.

[0111] Step 4: Interfacial polymerization of microcapsules: At a constant temperature of 40 to 45°C, slowly add an aqueous solution of ethylenediamine to the emulsion system over a period of 60 minutes. Incubate the reaction at this temperature for 2 hours.

[0112] Step 5 High-temperature curing: Heat to 60℃ for 1 hour, then heat to 80℃ and hold for 1.5 hours. Finally, centrifuge, wash with water and dry under low temperature vacuum to obtain milky white, uniform and loose sandalwood essential oil polyurea microcapsules.

[0113] The aliphatic polyurea microcapsules prepared by this process have dense capsule walls, a heat resistance temperature of 220℃, and an average particle size of 10 μm. According to this embodiment, a mixture of thermoplastic polyester elastomer (TPEE) and EVA is used as the carrier substrate, with TPEE and EVA accounting for 50 / 24.5 parts by weight. 0.5 parts of dispersant / lubricant and 5 parts of antioxidant are added to obtain a masterbatch of traditional Chinese medicine essential oil microcapsules. Six parts of the above masterbatch of traditional Chinese medicine essential oil microcapsules are mixed with 90 parts of thermoplastic polyester elastomer and 94 parts of antioxidant, and extruded according to the preparation method of a highly breathable, therapeutic, three-dimensional elastic mesh home textile substrate. The raw material is dehumidified and dried at 100℃ for 2.5 hours. A five-stage screw temperature is set at 190-230℃, with a 10℃ interval between adjacent screws from the first to the fifth stage, gradually increasing the temperature to fully mix and melt the material to form a homogeneous melt. The fibers extruded through the spinneret fall into a constant-temperature, sealed area at 155°C. During the descent, the fiber diameter is further stretched, and the fibers coil and wrap before contacting the water surface. At the contact points, they melt and bond to form a three-dimensional mesh structure with tensile strength. This mesh structure is then guided into a cooling water bath at 26°C for shaping by a forming roller with a shallow diamond grid of 0.5 mm depth and a rotation speed of 1.5 r / min. After shaping, it is guided out by a traction roller to form a three-dimensional elastic mesh home textile substrate.

[0114] The aforementioned three-dimensional elastic mesh home textile substrate has a bulk density of 0.040 g / cm³. 3The wire diameter is 0.2 to 0.3 mm and the thickness is 15 mm.

[0115] The sandalwood microcapsules produced using the above process are loaded with a three-dimensional elastic mesh home textile substrate as the quilt filling material. The front of the quilt cover uses 230 g / m² sandalwood microcapsules. 2 Made with far-infrared terry cloth fabric, the reverse side uses a bird's-eye breathable fabric, and the microgravity all-season quilt is made using a single-needle quilting process.

[0116] The three-dimensional elastic mesh home textile substrate and the microgravity all-season quilt product prepared above were tested for application performance in the same manner as in Example 1. The test results are shown in Table 2.

[0117] Comparative Example 1

[0118] The three-dimensional elastic mesh home textile substrate was prepared using conventional air fiber production processes, without the loading of traditional Chinese medicine essential oil microcapsules. It was water-cooled and formed using an open-type water-spraying plate, without a temperature-controlled, heat-insulating, and airtight area. Other operational steps were the same as in Example 1. The application performance of the prepared three-dimensional elastic mesh home textile substrate and summer quilt product was tested in the same manner, and the test results are shown in Table 2.

[0119] Comparative Example 2

[0120] Using the substrate from Example 1, without the loading of traditional Chinese medicine essential oil microcapsules, the essential oil microcapsules were sprayed onto the fabric surface after molding. Everything else was identical to Example 1. The application performance of the prepared three-dimensional elastic mesh home textile substrate and summer quilt product was tested in the same manner, and the test results are shown in Table 2.

[0121] Comparative Example 3

[0122] Using the substrate from Example 1, the fibers extruded through the spinneret fell into a heat-insulated, sealed area at a constant temperature of 50°C. Everything else was identical to Example 1. The application performance of the prepared three-dimensional elastic mesh home textile substrate and summer quilt product was tested in the same manner, and the test results are shown in Table 2.

[0123] Table 2 Comparison of test performance results between the examples and comparative examples

[0124]

[0125] Finally, those skilled in the art should understand that the embodiments described in the specification and drawings are merely illustrative of the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention. The technical solutions of the present invention have been fully disclosed through specific embodiments and can achieve the aforementioned technical effects. Any modifications or improvements derived from the technical features defined in the claims of the present invention through equivalent substitutions, conventional adjustments, or techniques known in the art, as long as they do not depart from the essential content of the technical solutions of the present invention, shall fall within the scope of protection of the present invention.

Claims

1. A method for preparing a breathable, therapeutic, three-dimensional elastic mesh home textile substrate, characterized in that, Includes the following steps: a. The dried thermoplastic elastomer mixture is melt-extruded, and the extruded filaments fall freely into an insulated and sealed area at 70 to 200°C to form a three-dimensional network structure; The thermoplastic elastomer blend material comprises a thermoplastic elastomer and a microcapsule masterbatch of traditional Chinese medicine essential oils; b. Under the action of the self-rotating forming roller, the three-dimensional mesh structure is cooled and shaped to obtain the breathable physiotherapy type three-dimensional elastic mesh home textile substrate.

2. The method according to claim 1, characterized in that, The forming roller is provided with continuous and uniform shallow rhomboid or dotted anti-slip micro-patterns.

3. The method according to claim 1, characterized in that, The mixture is melt-extruded using an extruder with the screw temperature set to 160 to 240°C, so that the mixture is formed into a melt and then extruded through a perforated spinneret.

4. The method according to claim 1, characterized in that, The rotational speed of the forming roller is 0.1 to 3 r / min, and / or In step b, the three-dimensional mesh structure is cooled and shaped by a cooling water bath, and at least 1 / 3 of the height of the forming roller is above the cooling water surface.

5. A breathable, therapeutic, three-dimensional elastic mesh home textile substrate, characterized in that, The home textile substrate is formed by winding filaments of a thermoplastic elastomer blend. The thermoplastic elastomer blend comprises a thermoplastic elastomer and a microcapsule masterbatch of traditional Chinese medicine essential oil dispersed in the thermoplastic elastomer, wherein, based on the total weight of the thermoplastic elastomer and the microcapsule masterbatch, the weight percentage of the thermoplastic elastomer is 94% to 100%, and the weight percentage of the microcapsule masterbatch is 0% to 6%. The bulk density of the home textile substrate is 0.015 to 0.080 g / cm³. 3 The diameter of the single filament is 0.1 to 0.5 mm, and the indentation hardness is 5 to 80 N.

6. The home textile substrate according to claim 5, characterized in that, The thermoplastic elastomer is one or more of the following: polyolefin POE / metallocene PE, polyester TPEE, polyurethane TPU, styrene, silicone rubber TPSIV, and nylon elastomer TPAE.

7. The home textile substrate according to claim 5, characterized in that, The herbal essential oil microcapsule masterbatch comprises herbal essential oil microcapsules, a carrier substrate, a dispersing lubricant, and an antioxidant. Based on the total weight of the herbal essential oil microcapsules, the carrier substrate, the dispersing lubricant, and the antioxidant, the weight percentage of the herbal essential oil microcapsules is 20% to 50%, the weight percentage of the carrier substrate is 33% to 79.5%, the weight percentage of the dispersing lubricant is 0.5% to 2%, and the weight percentage of the antioxidant is 0% to 15%; and / or The herbal essential oil microcapsule masterbatch contains herbal essential oil microcapsules, and the active ingredient in the core of the herbal essential oil microcapsules is selected from at least one of the following: Acorus tatarinowii essential oil, sandalwood essential oil, perilla leaf essential oil, lavender essential oil, bergamot essential oil, and green tangerine peel essential oil; and / or The herbal essential oil microcapsule masterbatch contains herbal essential oil microcapsules, and the capsule wall material of the herbal essential oil microcapsules is selected from at least one of modified melamine formaldehyde resin, cross-linked polyurea, cross-linked acrylate copolymer, or organic-inorganic bilayer hybrid wall material.

8. The home textile substrate according to claim 5, characterized in that, The herbal essential oil microcapsule masterbatch contains herbal essential oil microcapsules, the heat resistance temperature of the herbal essential oil microcapsules is greater than or equal to 180℃, and the average particle size is 1 μm to 15 μm.

9. A therapeutic mesh pad, characterized in that, The home textile substrate includes any one of claims 5 to 8, or a home textile substrate prepared by the method according to any one of claims 1 to 4, wherein the thickness of the mesh pad is 4 to 10 mm and the bulk density is 0.015 to 0.035 g / cm³. 3 Or 0.055 to 0.080 g / cm³ 3 The monofilament diameter is 0.1 to 0.3 mm, and the air permeability is greater than or equal to 4500 mm / s.

10. A home textile product, characterized in that, Includes the therapeutic mesh padding layer according to claim 9.

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