A composite coating material for traditional Chinese medicine ironing

Abstract

The composite coating material of the present invention comprises a three-layer structure. In the middle layer, based on 100 parts by weight of sodium acetate trihydrate, the amount of borax nucleating agent is controlled at 5.1-9.6 parts by weight, which enables the surface temperature of the composite coating material to be controlled at 40±1.5℃, meeting the usage requirements of traditional Chinese medicine ironing.

Description

Technical Field

[0001] This invention relates to the field of materials, and more specifically to a composite coating material for ironing traditional Chinese medicine. Background Technology

[0002] Currently, traditional Chinese medicine (TCM) clinics widely employ external heat therapy methods such as herbal ironing. The routine procedure involves heating the prepared herbal medicine, placing it directly into a regular cloth bag, and then having medical staff repeatedly iron the affected area. Existing cloth bags are simple in structure and single-function, only serving the basic purpose of holding the medicine, lacking professional temperature control and heat conduction protection. During manual operation, it is difficult to accurately control the actual contact temperature of the medicine, easily causing localized high-temperature burns due to excessively high initial temperatures. Furthermore, prolonged continuous ironing can easily lead to latent low-temperature burns, posing a high safety risk in clinical use. At the same time, conventional cloths are dense and have poor breathability, only able to transfer heat, unable to maintain the constant and suitable temperature required for physiotherapy, and cannot assist in the external penetration and absorption of the effective active ingredients of the herbal medicine, resulting in low utilization of the heat therapy's efficacy. In addition, manual operation throughout the process is labor-intensive, and the inconsistent therapeutic temperature makes it difficult to guarantee consistent treatment results. Therefore, there is an urgent need to develop a specialized composite material for wrapping medicinal materials that is suitable for the conditions of herbal ironing, combining safety against burns, constant temperature control, uniform heat dissipation, and auxiliary penetration promotion functions. Summary of the Invention

[0003] The purpose of this invention is to provide a composite coating material for ironing Chinese medicine, which can meet the usage requirements of ironing Chinese medicine, especially the temperature requirements.

[0004] The technical solution of the present invention is as follows: A composite coating material for ironing traditional Chinese medicine, wherein the composite coating material has a three-layer composite structure; The inner layer is made of 130-140g / ㎡ large-pore high-temperature resistant thermally conductive non-woven fabric, which is preheated and leveled at 120-125℃ to balance heat conduction and penetration of volatile components of traditional Chinese medicine. The middle layer is an inorganic sizing phase change temperature control layer, formulated by mass ratio as follows: based on 100 parts of sodium acetate trihydrate, 5.1-9.6 parts of borax nucleating agent, and 20-22 parts of porous kaolinite, the phase change powder is prepared by high-speed homogenization; then, 45-48 parts of the phase change powder, 5-5.5 parts of fumed silica, and 50-52 parts of medical waterborne polyurethane are taken and stirred at 500-600 r / min for 25-30 min to prepare a slurry; a wet film thickness of 0.25-0.3 mm is applied by single-sided scraper coating and cured at 75-78℃ for 120-150 s; The outer layer is made of medical-grade hydrophilic viscose fiber fabric, which is treated with 300-320W plasma for 20-30 minutes to modify the microporous hydrophilicity, constructing microscopic drug permeation channels to promote the slow release of effective components of traditional Chinese medicine. After the three layers of fabric are stacked, they are bonded by point hot pressing at a temperature of 82-85℃, a pressure of 0.3-0.35MPa, and a speed of 4.5-4.8m / min. After bonding, the edges are cut and the filling port is sewn.

[0005] Preferably, the inner layer is made of a high-temperature resistant, thermally conductive nonwoven fabric with a large pore size of 130g / ㎡.

[0006] Preferably, the plasma treatment time is 30 minutes.

[0007] Preferably, the amount of the borax nucleating agent is 8.5 parts.

[0008] Preferably, the pressure is 0.3 MPa.

[0009] The composite coating material of this invention comprises a three-layer structure: the inner layer directly adheres to the heated Chinese herbal medicine, rapidly and evenly conducting heat to prevent localized heat buildup and burns; its large-pore, loose structure allows for the permeation of volatile oils and water-soluble active ingredients, ensuring smooth delivery of the medicinal effect. Simultaneously, the inner layer is heat-resistant and does not shed easily, isolating herbal residue and preventing leakage and contamination of the contact surface, thus achieving a triple effect of heat conduction, drug permeability, and residue prevention. The middle layer is the core functional layer of this material, primarily playing a crucial role in temperature control, buffering and cooling, and preventing leakage and shaping. When the Chinese herbal medicine is initially heated, its temperature is relatively high; the middle layer quickly absorbs excess heat, reducing the excessively high temperature. During the heat application process, it slowly releases stored heat, maintaining the contact surface at a suitable therapeutic temperature of approximately 40°C for an extended period, preventing both high-temperature burns and prolonged low-temperature burns. Meanwhile, the middle layer forms a sealed film that firmly locks in the internal phase change salt material, preventing liquid leakage after melting and improving safety. The outer layer directly adheres to the human body surface, offering a soft and skin-friendly feel and high wearing comfort. Its surface undergoes microporous hydrophilic modification treatment, further aiding the diffusion and absorption of the medicinal ingredients of traditional Chinese medicine to the skin surface. At the same time, it evenly distributes the heat, ensuring uniform heating of the skin and preventing localized overheating or sudden temperature changes, thus enhancing the comfort and therapeutic effect of ironing.

[0010] In the middle layer material, sodium acetate trihydrate is the main phase change energy storage material, whose core function is heat absorption and storage, and heat release and insulation. Borax nucleating agent is used to prevent sodium acetate trihydrate from failing to crystallize due to overcooling, playing a role in inducing rapid crystallization and stabilizing the phase change cycle. Porous kaolinite is used to adsorb powder, mainly for adsorbing liquid phase change salts, preventing leakage, and reinforcing and shaping. Fumed silica plays a role in thickening, preventing sedimentation, and improving the uniformity of the slurry. Medical waterborne polyurethane is used as the film-forming adhesive substrate, playing a role in film formation, adhesion, and flexible bonding. In addition, based on 100 parts by weight of sodium acetate trihydrate, controlling the borax nucleating agent at 5.1-9.6 parts by weight can keep the surface temperature of the composite coating material at 40±1.5℃, meeting the requirements for traditional Chinese medicine ironing. Detailed Implementation

[0011] The technical effects of the present invention will be verified through specific embodiments below, but the implementation of the present invention is not limited thereto.

[0012] Example 1 A composite coating material for ironing with traditional Chinese medicine is disclosed. The material has a three-layer composite structure. The inner layer is made of 130g / ㎡ high-temperature resistant, heat-conducting non-woven fabric with large pores, preheated and leveled at 120℃ to ensure both heat conduction and penetration of volatile components from the traditional Chinese medicine. The middle layer is an inorganic, shaped phase change temperature-controlled layer, formulated by mixing 100 parts sodium acetate trihydrate, 5.1 parts borax nucleating agent, and 20 parts porous kaolinite at high speed to obtain phase change powder. Then, 45 parts of the phase change powder, 5 parts of fumed silica, and 50 parts of medical-grade waterborne polyurethane are mixed at 500r / min for 25min to form a slurry. A single-sided scraper coating with a wet film thickness of 0.25mm is applied and cured at 75℃ for 120s. The outer layer is made of medical-grade hydrophilic viscose fiber fabric, heated to 300W... Plasma treatment for 20 minutes is used to modify the microporous hydrophilicity and construct microscopic drug permeation channels to promote the slow release of the effective components of traditional Chinese medicine. After the three layers of fabric are stacked, they are composited by point hot pressing at a temperature of 82℃, a pressure of 0.3MPa, and a speed of 4.5m / min. After composite, the edges are cut, the filling port is sewn.

[0013] Example 2 A composite coating material for applying traditional Chinese medicine (TCM) ironing is a three-layer composite structure. The inner layer is made of 130g / ㎡ high-temperature resistant and thermally conductive nonwoven fabric with large pores, preheated and leveled at 120℃ to ensure both heat conduction and penetration of volatile components from the TCM. The middle layer is an inorganic sizing phase change temperature-controlled layer, formulated by mixing 100 parts sodium acetate trihydrate, 6.3 parts borax nucleating agent, and 20 parts porous kaolinite at high speed to obtain phase change powder. Then, 45 parts of the phase change powder, 5 parts of fumed silica, and 50 parts of medical-grade waterborne polyurethane are stirred at 500r / min for 25min to prepare a slurry. A single-sided scraper coating with a wet film thickness of 0.25mm is applied and cured at 75℃ for 120s. The outer layer is made of medical-grade hydrophilic viscose fiber fabric, heated to 300W... Plasma treatment for 20 minutes is used to modify the microporous hydrophilicity and construct microscopic drug permeation channels to promote the slow release of the effective components of traditional Chinese medicine. After the three layers of fabric are stacked, they are composited by point hot pressing at a temperature of 82℃, a pressure of 0.3MPa, and a speed of 4.5m / min. After composite, the edges are cut, the filling port is sewn.

[0014] Example 3 A composite coating material for applying traditional Chinese medicine (TCM) ironing is a three-layer composite structure. The inner layer is made of 130g / ㎡ high-temperature resistant and thermally conductive nonwoven fabric with large pores, preheated and leveled at 120℃ to ensure both heat conduction and penetration of volatile components from the TCM. The middle layer is an inorganic sizing phase change temperature-controlled layer, formulated by mixing 100 parts sodium acetate trihydrate, 8.5 parts borax nucleating agent, and 20 parts porous kaolinite at high speed to obtain phase change powder. Then, 45 parts of the phase change powder, 5 parts of fumed silica, and 50 parts of medical-grade waterborne polyurethane are stirred at 500r / min for 25min to form a slurry. A single-sided scraper coating with a wet film thickness of 0.25mm is applied and cured at 75℃ for 120s. The outer layer is made of medical-grade hydrophilic viscose fiber fabric, heated to 300W... Plasma treatment for 20 minutes is used to modify the microporous hydrophilicity and construct microscopic drug permeation channels to promote the slow release of the effective components of traditional Chinese medicine. After the three layers of fabric are stacked, they are composited by point hot pressing at a temperature of 82℃, a pressure of 0.3MPa, and a speed of 4.5m / min. After composite, the edges are cut, the filling port is sewn.

[0015] Example 4 A composite coating material for applying traditional Chinese medicine (TCM) ironing is a three-layer composite structure. The inner layer is made of 130g / ㎡ high-temperature resistant and thermally conductive nonwoven fabric with large pores, preheated and leveled at 120℃ to ensure both heat conduction and penetration of volatile components from the TCM. The middle layer is an inorganic phase change temperature-controlled layer, formulated by mixing 100 parts sodium acetate trihydrate, 9.6 parts borax nucleating agent, and 20 parts porous kaolinite at high speed to obtain phase change powder. Then, 45 parts of the phase change powder, 5 parts of fumed silica, and 50 parts of medical-grade waterborne polyurethane are stirred at 500r / min for 25min to form a slurry. A single-sided scraper coating with a wet film thickness of 0.25mm is applied and cured at 75℃ for 120s. The outer layer is made of medical-grade hydrophilic viscose fiber fabric, heated to 300W... Plasma treatment for 20 minutes is used to modify the microporous hydrophilicity and construct microscopic drug permeation channels to promote the slow release of the effective components of traditional Chinese medicine. After the three layers of fabric are stacked, they are composited by point hot pressing at a temperature of 82℃, a pressure of 0.3MPa, and a speed of 4.5m / min. After composite, the edges are cut, the filling port is sewn.

[0016] Comparative Example 1 A composite coating material for ironing with traditional Chinese medicine is disclosed. The material has a three-layer composite structure. The inner layer is made of 130g / ㎡ high-temperature resistant, heat-conducting non-woven fabric with large pores, preheated and leveled at 120℃ to ensure both heat conduction and penetration of volatile components from the traditional Chinese medicine. The middle layer is an inorganic, shaped phase change temperature-controlled layer, formulated by mixing 100 parts sodium acetate trihydrate, 2.5 parts borax nucleating agent, and 20 parts porous kaolinite at high speed to obtain phase change powder. Then, 45 parts of the phase change powder, 5 parts of fumed silica, and 50 parts of medical-grade waterborne polyurethane are mixed at 500r / min for 25min to form a slurry. A single-sided scraper coating with a wet film thickness of 0.25mm is applied and cured at 75℃ for 120s. The outer layer is made of medical-grade hydrophilic viscose fiber fabric, heated to 300W... Plasma treatment for 20 minutes is used to modify the microporous hydrophilicity and construct microscopic drug permeation channels to promote the slow release of the effective components of traditional Chinese medicine. After the three layers of fabric are stacked, they are composited by point hot pressing at a temperature of 82℃, a pressure of 0.3MPa, and a speed of 4.5m / min. After composite, the edges are cut, the filling port is sewn.

[0017] Comparative Example 2 A composite coating material for applying traditional Chinese medicine (TCM) ironing is a three-layer composite structure. The inner layer is made of 130g / ㎡ high-temperature resistant and thermally conductive nonwoven fabric with large pores, preheated and leveled at 120℃ to ensure both heat conduction and penetration of volatile components from the TCM. The middle layer is an inorganic phase change temperature-controlled layer, formulated by mixing 100 parts sodium acetate trihydrate, 14 parts borax nucleating agent, and 20 parts porous kaolinite at high speed to obtain phase change powder. Then, 45 parts of the phase change powder, 5 parts of fumed silica, and 50 parts of medical-grade waterborne polyurethane are stirred at 500r / min for 25min to form a slurry. A single-sided scraper coating with a wet film thickness of 0.25mm is applied and cured at 75℃ for 120s. The outer layer is made of medical-grade hydrophilic viscose fiber fabric, heated to 300W... Plasma treatment for 20 minutes is used to modify the microporous hydrophilicity and construct microscopic drug permeation channels to promote the slow release of the effective components of traditional Chinese medicine. After the three layers of fabric are stacked, they are composited by point hot pressing at a temperature of 82℃, a pressure of 0.3MPa, and a speed of 4.5m / min. After composite, the edges are cut, the filling port is sewn.

[0018] Hereinafter, equal amounts of freshly decocted Chinese medicine were placed into the coating materials of Examples 1-4 and Comparative Examples 1-2, and the temperature of the outer surface of the medicine pack was recorded (recorded once at 5 min, 25 min and 65 min respectively). If the temperature was 40±1.5℃, it was marked as “√”, otherwise it was marked as “×”. The experimental results are shown in Table 1.

[0019] Table 1 Test data for each sample As shown in Table 1, with 100 parts by weight of sodium acetate trihydrate as a baseline, controlling the amount of borax nucleating agent at 5.1-9.6 parts by weight can keep the surface temperature of the composite coating material at 40±1.5℃, which meets the requirements for ironing with traditional Chinese medicine.

[0020] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A composite coating material for ironing traditional Chinese medicine, characterized in that, The composite coating material has a three-layer composite structure; The inner layer is made of 130-140g / ㎡ large-pore high-temperature resistant thermally conductive non-woven fabric, which is preheated and leveled at 120-125℃ to balance heat conduction and penetration of volatile components of traditional Chinese medicine. The middle layer is an inorganic sizing phase change temperature control layer, formulated by mass ratio as follows: based on 100 parts of sodium acetate trihydrate, 5.1-9.6 parts of borax nucleating agent, and 20-22 parts of porous kaolinite, the phase change powder is prepared by high-speed homogenization; then, 45-48 parts of the phase change powder, 5-5.5 parts of fumed silica, and 50-52 parts of medical waterborne polyurethane are taken and stirred at 500-600 r / min for 25-30 min to prepare a slurry; a wet film thickness of 0.25-0.3 mm is applied by single-sided scraper coating and cured at 75-78℃ for 120-150 s; The outer layer is made of medical-grade hydrophilic viscose fiber fabric, which is treated with 300-320W plasma for 20-30 minutes to modify the microporous hydrophilicity, constructing microscopic drug permeation channels to promote the slow release of effective components of traditional Chinese medicine. After the three layers of fabric are stacked, they are bonded by point hot pressing at a temperature of 82-85℃, a pressure of 0.3-0.35MPa, and a speed of 4.5-4.8m / min. After bonding, the edges are cut and the filling port is sewn.

2. A composite coating material as described in claim 1, characterized in that, The inner layer is made of 130g / ㎡ large-pore high-temperature resistant thermally conductive nonwoven fabric.

3. A composite coating material as described in claim 1 or 2, characterized in that, The plasma treatment time is 30 minutes.

4. A composite coating material as described in claim 1, characterized in that, The amount of the borax nucleating agent used is 8.5 parts.

5. A composite coating material as described in claim 1, characterized in that, The pressure is 0.3 MPa.

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