CN109718002B - Heating patch with slow-release health care function - Google Patents
Heating patch with slow-release health care function Download PDFInfo
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- CN109718002B CN109718002B CN201811625465.0A CN201811625465A CN109718002B CN 109718002 B CN109718002 B CN 109718002B CN 201811625465 A CN201811625465 A CN 201811625465A CN 109718002 B CN109718002 B CN 109718002B
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- Thermotherapy And Cooling Therapy Devices (AREA)
- Cosmetics (AREA)
Abstract
The invention relates to the field of daily necessities, and discloses a warming patch with a slow-release health-care function, which comprises a heating source, a non-woven fabric inner bag wrapping the heating source, an essential oil microcapsule, a non-woven fabric outer bag wrapping the non-woven fabric inner bag and the essential oil microcapsule, a bonding layer arranged on one side of the outer surface of the non-woven fabric outer bag, and an airtight packaging bag wrapping the non-woven fabric outer bag; the inner surface of the non-woven fabric inner bag is pasted with a waterproof breathable film; the non-woven inner bag and the non-woven outer bag are made of short fibers compounded with far infrared particles. The warming patch has the functions of releasing fragrance and far infrared rays, and can play a health care role for a human body besides warming. The heating patch can continuously and stably emit heat and release fragrance, and the temperature is relatively constant in the middle and later periods.
Description
Technical Field
The invention relates to the field of daily necessities, in particular to a heating patch with a slow-release health-care function.
Background
In recent years, particularly in winter, a warmer has become one of the necessary daily necessities of a young family. The reaction principle of most of the warmer in the market at present is to utilize a primary battery to accelerate the oxidation reaction so as to convert chemical energy into heat energy. Most of the existing warmer mainly comprises a heating raw material layer, a gelatin layer, a non-woven bag with a microporous breathable film and an airtight outer bag. When the heat-generating bag is used, the outer bag is removed, the inner bag (non-woven bag) is exposed in the air, and oxygen in the air enters the heat-generating raw material layer through the air-permeable film to perform exothermic reaction with the iron powder. The reaction principle is that the oxidation reaction speed is accelerated by using a primary battery, and chemical energy is converted into heat energy.
However, the warmer in the current market is generally single in functionality and only has a heating function. Under the condition that more and more homogenization products are available in the market at present, a plurality of new multifunctional warmer products are needed to be developed, so that the added value and the product competitiveness of the products are sequentially improved, and the requirements of different customers are fully met.
On the other hand, in order to make the temperature last longer, vermiculite is further contained in the heat-generating raw material layer for heat preservation. The maximum temperature of a common warmer is marked to be about 63 ℃, and the average temperature is marked to be about 53 ℃. However, in actual tests, most of the currently marketed warmer products are not consistent with the labeling, and the maximum temperature is far higher than the labeling temperature. This can create certain safety hazards, such as the continued high temperatures that can cause burns to the skin. In addition, the common problem of the existing warmer products is that the temperature is high in the middle stage of fever, but the temperature cannot be maintained for a long time in the later stage due to the gradual failure of the reaction.
Disclosure of Invention
In order to solve the technical problems, the invention provides a heating patch with a slow-release health-care function. The warming patch has the functions of releasing fragrance and far infrared rays, and can play a health care role for a human body besides warming. The heating patch can continuously and stably emit heat and release fragrance, and the temperature is relatively constant in the middle and later periods.
The specific technical scheme of the invention is as follows: a warming patch with slow release health promotion function comprises a heating source, a non-woven fabric inner bag wrapping the heating source, an essential oil microcapsule, a non-woven fabric outer bag wrapping the non-woven fabric inner bag and the essential oil microcapsule, a bonding layer arranged on one side of the outer surface of the non-woven fabric outer bag, and an airtight packaging bag wrapping the non-woven fabric outer bag; the inner surface of the non-woven fabric inner bag is pasted with a waterproof breathable film; the non-woven inner bag and the non-woven outer bag are made of short fibers compounded with far infrared particles.
The principle of the invention is as follows: similar with ordinary warm baby, tear off the outermost gas tightness wrapping bag that is used for isolated air after, air infiltration gets into non-woven fabrics inner bag and outer bag and generates heat the source contact reaction and release heat, and along with the promotion of temperature, essential oil microcapsule releases essential oil gradually, gives off fragrant. Meanwhile, the inner bag and the outer bag of the non-woven fabric are made of far infrared short fibers, and can fully play a role of far infrared under the addition of heat, further promote the blood circulation of a human body, and play a role in health care and warm keeping. Compared with the traditional warmer on the market, the multifunctional warmer has richer functions, can meet the requirements of consumers and has stronger competitiveness.
Preferably, the preparation method of the essential oil microcapsule comprises the following steps: adding the essential oil into ethanol, adding beta-cyclodextrin powder into the ethanol in batches, stirring uniformly, and taking out after saturated adsorption; melting paraffin with a melting point of 40-50 ℃, immersing saturated and adsorbed beta-cyclodextrin powder into the molten paraffin, immediately taking out, immersing into ice water for cooling, and removing surface moisture after taking out to obtain the essential oil microcapsule.
Because the essential oil belongs to volatile substances, the essential oil is easy to volatilize before use, and thus the slow release effect cannot be achieved. Therefore, the invention firstly uses beta-cyclodextrin powder to embed the beta-cyclodextrin powder, so that the beta-cyclodextrin powder cannot be quickly volatilized in a short time. On the basis, the paraffin with the melting point of 40-50 ℃ is selected to coat the surface of the heating paste, and the function is that when the heating paste is heated to be higher than the melting point of the paraffin, the paraffin is gradually melted, so that the essential oil in the beta-cyclodextrin powder is heated to volatilize, and the essential oil is prevented from losing before use.
Preferably, the essential oil is at least one selected from the group consisting of rose essential oil, sandalwood essential oil, cinnamon essential oil, lavender essential oil, lemon essential oil, geranium essential oil, mint essential oil, thyme essential oil, camphor essential oil, and tea tree essential oil.
Preferably, the preparation method of the short fiber compounded with the far infrared particles comprises the following steps: and (3) spraying the spinning solution from a spinneret plate through a spinning assembly to form primary yarns, blowing the primary yarns by using hot nitrogen with far infrared particles, attaching the far infrared particles to the surfaces of the primary yarns, and curing to obtain the short fibers compounded with the far infrared particles.
Compared with the prior art that the far infrared particles are directly filled in the non-woven fabric bag, the invention compounds the far infrared particles in the fiber, and the occupied volume is smaller. The invention adopts a special compounding method, does not adopt the traditional method of directly mixing far infrared particles with spinning solution for spinning, but adopts the mode that the spinning solution becomes incompletely solidified primary yarn and then is blown to the surface of the primary yarn by hot nitrogen for compounding, and has the advantages that: 1. if the far infrared particles are directly mixed with the spinning solution for spinning, the spinnability of the spinning solution is easy to be poor, and a spinning head is easy to be blocked; 2. the far infrared particles are attached to the surface layer of the fiber, so that the obstruction of the fiber matrix is reduced, and the far infrared is more favorably released.
Preferably, the far infrared particles are selected from bamboo charcoal powder, tourmaline powder, medical stone powder and volcanic rock powder.
Preferably, the staple fibers are polyester, polypropylene, polyethylene or viscose textured.
Preferably, the adhesive layer is a gelatin layer. The gelatin layer is used for bonding with clothes of human body.
Preferably, the porosity of the waterproof breathable film is 90-98%.
Since the present invention includes two layers of nonwoven fabric, it is required to have a high porosity in order to secure air permeability.
As a preferred scheme, the heating source is a porous hydrogel type heating source and comprises the following components: 40-50 wt% of iron powder, 10-15 wt% of porous water-absorbing resin, 3-5 wt% of vermiculite, 3-5 wt% of activated carbon, 1-5 wt% of sodium chloride and 30-40 wt% of water.
Preferably, the porous water-absorbing resin is a polyacrylic resin or a polyvinyl alcohol resin.
Preferably, a modified N-isopropyl acrylamide polymer coating is further arranged on the waterproof breathable film on the inner surface of the non-woven fabric bag; the preparation method of the modified N-isopropylacrylamide polymer comprises the following steps: placing acrylamide and N-isopropyl acrylamide into a reaction container according to a molar ratio of 1:3-4, adding a water solvent, uniformly mixing, adding azobisisobutyronitrile with the total molar amount of 0.6-0.8% of the monomers, glutaraldehyde with the total molar amount of 3-5% of the monomers and calcium carbonate particles with the total mass of 0.5-1.5% of the monomers under the protection of nitrogen, stirring and reacting in a constant-temperature water bath at 60-70 ℃ for 8-12h, taking out a reaction product, soaking in water, adjusting the pH value to 5.5-6.5 for reaction, adjusting the pH value to neutral after the reaction, replacing water, continuing to soak for 1-2 days, cleaning and removing impurities, and performing vacuum drying to obtain a target product.
Compared with the prior art, the heating paste has the advantages that the waterproof breathable film on the inner surface of the non-woven fabric inner bag is also provided with the modified N-isopropylacrylamide polymer coating, and the modified N-isopropylacrylamide polymer has sensitive temperature sensitivity. When the temperature of the coating is higher than the lowest critical solution temperature, the surface of hydrogel in the coating shrinks, so that a hydration layer on the surface shrinks to form a compact skin layer, the porosity of the coating is reduced, the external oxygen is prevented from entering, and the heating reaction is limited. Therefore, when the temperature of the heating patch is too high, the coating film can effectively inhibit the progress of the heating reaction and reduce the temperature, and when the temperature is too low, the coating film can promote the heating to keep the temperature constant.
However, as described above, the coating film needs to be in a water-rich environment to have the above-described functions, and therefore, the present invention is intended to increase the contents of the water-absorbent resin and water in the heat-generating source, so that the entire heat-generating source is in a hydrogel state, and ensure that the coating film can be in a water-rich environment. However, other disadvantages caused by excessive moisture are also considered, for example, the present inventor found that if the moisture content is too high, the moisture occupies too much air flow channels in the water absorbent resin, so that external oxygen cannot enter and react with the iron powder. Therefore, the porous water-absorbing resin is specially selected, the three-dimensional network degree of the resin is improved, the pores are excessive, and air can be fully introduced and can react with the iron powder. In addition, because the water content of the invention is more, a waterproof breathable film is also arranged in the non-woven fabric bag to prevent the water from overflowing outside and contacting with the skin. In addition, the invention adopts the hydrogel type porous water-absorbing resin, and has the advantages that the heat can be uniformly transferred due to the existence of water, so that the temperature of each part of the heating paste is more uniform.
Although N-isopropylacrylamide polymer has temperature sensitivity, the lowest critical solution temperature value of the N-isopropylacrylamide polymer is about 33 ℃, which is lower than the body temperature, and if the N-isopropylacrylamide polymer is directly used in the invention, the temperature cannot be higher than the body temperature, and the N-isopropylacrylamide polymer cannot generate heat sensation for people. Therefore, the invention group carries out a series of researches, and finally discovers that acrylamide monomers with a certain proportion are doped in the N-isopropyl acrylamide polymer for copolymerization, so that the lowest critical solution temperature value of the polymer can be improved to a certain extent. In addition, after experiments, the team of the invention finds that when the molar ratio of the acrylamide to the N-isopropylacrylamide is controlled to be 1:3-4, the temperature value of the lowest critical solution is increased to about 57.5 ℃. At this temperature, the human body thermal comfort value (53 ℃) is substantially approached.
The principle is as follows: after acrylamide and N-isopropyl acrylamide are copolymerized, the content of hydrophilic groups-CONH 2 in a molecular chain is increased, hydrophilic amide groups are introduced into a hydrogel network framework by-CONH 2, the number of hydrogen bonds formed by the hydrophilic amide groups and water molecules is increased, and therefore the hydrogen bonds can be destroyed by high energy, and the temperature value of the lowest critical solution is correspondingly increased.
Preferably, the particle size of the calcium carbonate particles is nanometer.
In the present invention, the calcium carbonate fine particles function to increase the porosity of the coating film. The principle is that calcium carbonate does not participate in reaction in the process of generating polymer hydrogel to occupy a certain space, the pH is reduced in the subsequent hydrogel aging process to react with acid, and then the calcium carbonate is washed away by using a solvent to release the space, so that the porosity of a coating is improved. The reason for this is that the porosity of the polymer hydrogel itself is so low that even if it is lower than the lowest critical solution temperature value, it is not possible to let the outside air pass through sufficiently, and thus it is necessary to artificially increase the porosity.
Preferably, the thickness of the modified N-isopropylacrylamide polymer coating film is 0.1 to 0.2 mm.
Preferably, the content of sodium chloride in the porous hydrogel type heating source is 1-3%.
As mentioned above, the human body thermal comfort value is about 53 ℃, but the invention controls the lowest critical solution temperature value of the modified N-isopropylacrylamide polymer to be about 57.5 ℃, and is more reasonable if the temperature is directly set to be about 53 ℃. However, the research process of the team of the invention finds that the concentration of sodium chloride in the water environment directly influences and reduces the lowest critical solution temperature value of the polymer. Sodium chloride is indispensable as a substance for promoting an exothermic reaction in an exothermic source, but the lower the minimum critical solution temperature value of the polymer, the higher the concentration thereof. Therefore, the invention specially increases the temperature value of the lowest critical solution of the polymer to about 57.5 ℃, and reasonably reduces the content of sodium chloride.
Preferably, the porous hydrogel type heat source has a water content of 35-40%.
As described above, the coating film of the present invention needs to have good temperature sensitivity in a water-rich environment, and thus the water content needs to be increased within a reasonable range.
Compared with the prior art, the invention has the beneficial effects that:
1. the warming patch has the functions of releasing fragrance and far infrared rays, and can play a health care role for a human body besides warming.
2. The heating patch can continuously and stably heat and release fragrance, and the temperature is relatively constant in the middle and later periods.
Detailed Description
The present invention will be further described with reference to the following examples.
Example 1
A warming patch with sustained-release health-care function comprises a porous hydrogel type heating source, a non-woven fabric inner bag wrapping the porous hydrogel type heating source, an essential oil microcapsule, a non-woven fabric outer bag wrapping the non-woven fabric inner bag and the essential oil microcapsule, a gelatin bonding layer arranged on one side of the outer surface of the non-woven fabric outer bag, and an airtight packaging bag wrapping the non-woven fabric outer bag; the inner surface of the non-woven fabric inner bag is sequentially stuck with a waterproof breathable film (the porosity is 96%) and a modified N-isopropyl acrylamide polymer coating film with the thickness of 0.15 mm; the non-woven inner bag and the non-woven outer bag are made of polyester staple fibers compounded with far infrared particles.
The preparation method of the essential oil microcapsule comprises the following steps: adding essential oil (rose essential oil-lavender essential oil-tea tree essential oil compound essential oil) into ethanol, adding beta-cyclodextrin powder into ethanol in batches, stirring, and taking out after saturated adsorption; melting paraffin with melting point of about 40 ℃, immersing saturated and adsorbed beta-cyclodextrin powder into the melted paraffin, immediately taking out the saturated and adsorbed beta-cyclodextrin powder, immersing the saturated and adsorbed beta-cyclodextrin powder into ice water for cooling, and removing surface moisture after taking out the saturated and adsorbed beta-cyclodextrin powder to obtain the essential oil microcapsule.
The preparation method of the polyester short fiber compounded with the far infrared particles comprises the following steps: and (2) spraying the spinning solution from a spinneret plate through a spinning assembly to form primary silk, blowing the primary silk by using hot nitrogen with far infrared particles (bamboo charcoal powder), attaching the far infrared particles to the surface of the primary silk, and curing to obtain the short fiber compounded with the far infrared particles.
The porous hydrogel type heating source comprises the following components: 40 wt% of iron powder, 12.5 wt% of porous water-absorbing resin (polyacrylic resin), 4 wt% of vermiculite, 4 wt% of activated carbon, 2 wt% of sodium chloride and 37.5 wt% of water.
The preparation method of the modified N-isopropylacrylamide polymer comprises the following steps: placing acrylamide and N-isopropyl acrylamide into a reaction container according to a molar ratio of 1:3.5, adding a water solvent, uniformly mixing, then adding azobisisobutyronitrile with the total molar amount of 0.7% of monomers, glutaraldehyde with the total molar amount of 4% of monomers and nano calcium carbonate particles with the total mass of 1% of monomers under the protection of nitrogen, stirring and reacting for 10 hours in a constant-temperature water bath at 65 ℃, taking out a reaction product, soaking in water and adjusting the pH to 6 for reaction, adjusting the pH to be neutral after the reaction, continuously soaking for 2 days after water replacement, cleaning and removing impurities, and performing vacuum drying to obtain a target product.
Example 2
A warming patch with sustained-release health-care function comprises a porous hydrogel type heating source, a non-woven fabric inner bag wrapping the porous hydrogel type heating source, an essential oil microcapsule, a non-woven fabric outer bag wrapping the non-woven fabric inner bag and the essential oil microcapsule, a gelatin bonding layer arranged on one side of the outer surface of the non-woven fabric outer bag, and an airtight packaging bag wrapping the non-woven fabric outer bag; the inner surface of the non-woven fabric inner bag is sequentially stuck with a waterproof breathable film (the porosity is 98%) and a modified N-isopropyl acrylamide polymer coating film with the thickness of 0.2 mm; the non-woven inner bag and the non-woven outer bag are made of polypropylene short fibers compounded with far infrared particles.
The preparation method of the essential oil microcapsule comprises the following steps: adding essential oil (sandalwood essential oil-geranium essential oil-camphor essential oil compound essential oil) into ethanol, adding beta-cyclodextrin powder into the ethanol in batches, stirring uniformly, and taking out after saturated adsorption; melting paraffin with melting point of about 48 ℃, immersing saturated and adsorbed beta-cyclodextrin powder in the melted paraffin, immediately taking out the saturated and adsorbed beta-cyclodextrin powder, immersing the saturated and adsorbed beta-cyclodextrin powder in ice water for cooling, and removing surface moisture after taking out to obtain the essential oil microcapsule.
The preparation method of the polypropylene short fiber compounded with the far infrared particles comprises the following steps: and (2) spraying the spinning solution from a spinneret plate through a spinning assembly to form primary silk, blowing the primary silk by using hot nitrogen with far infrared particles (tourmaline powder), attaching the far infrared particles to the surface of the primary silk, and curing to obtain the short fiber compounded with the far infrared particles.
The porous hydrogel type heating source comprises the following components: 45 wt% of iron powder, 11.5 wt% of porous water-absorbing resin (polyvinyl alcohol resin), 3 wt% of vermiculite, 3 wt% of activated carbon, 2.5 wt% of sodium chloride and 35 wt% of water.
The preparation method of the modified N-isopropylacrylamide polymer comprises the following steps: placing acrylamide and N-isopropyl acrylamide into a reaction container according to a molar ratio of 1:4, adding a water solvent, uniformly mixing, adding azobisisobutyronitrile with the total molar amount of 0.6 percent of the monomer, glutaraldehyde with the total molar amount of 3 percent of the monomer and nano calcium carbonate particles with the total mass of 0.5 percent of the monomer under the protection of nitrogen, stirring and reacting for 12 hours in a constant-temperature water bath at 6 ℃, taking out a reaction product, soaking in water and adjusting the pH to 5.5 for reaction, adjusting the pH to be neutral after the reaction, continuously soaking for 1 day after water replacement, cleaning, and performing vacuum drying to obtain a target product for removing impurities.
Example 3
A warming patch with sustained-release health-care function comprises a porous hydrogel type heating source, a non-woven fabric inner bag wrapping the porous hydrogel type heating source, an essential oil microcapsule, a non-woven fabric outer bag wrapping the non-woven fabric inner bag and the essential oil microcapsule, a gelatin bonding layer arranged on one side of the outer surface of the non-woven fabric outer bag, and an airtight packaging bag wrapping the non-woven fabric outer bag; the inner surface of the non-woven fabric inner bag is sequentially stuck with a waterproof breathable film (the porosity is 93%) and a modified N-isopropyl acrylamide polymer coating film with the thickness of 0.1 mm; the non-woven inner bag and the non-woven outer bag are made of polyethylene short fibers compounded with far infrared particles.
The preparation method of the essential oil microcapsule comprises the following steps: adding essential oil (lavender essential oil-lemon essential oil-thyme essential oil compound essential oil) into ethanol, adding beta-cyclodextrin powder into ethanol in batches, stirring, and taking out after saturated adsorption; melting paraffin with melting point of about 45 ℃, immersing saturated and adsorbed beta-cyclodextrin powder into the molten paraffin, immediately taking out the saturated and adsorbed beta-cyclodextrin powder, immersing the saturated and adsorbed beta-cyclodextrin powder into ice water for cooling, and removing surface moisture after taking out to obtain the essential oil microcapsule.
The preparation method of the polyethylene short fiber compounded with the far infrared particles comprises the following steps: and (2) spraying the spinning solution from a spinneret plate through a spinning assembly to form primary silk, blowing the primary silk by using hot nitrogen with far infrared particles (medical stone powder), attaching the far infrared particles to the surface of the primary silk, and curing to obtain the short fiber compounded with the far infrared particles.
The porous hydrogel type heating source comprises the following components: 50 wt% of iron powder, 10 wt% of porous water-absorbing resin (polyvinyl alcohol resin), 3 wt% of vermiculite, 3 wt% of activated carbon, 3 wt% of sodium chloride and 31 wt% of water.
The preparation method of the modified N-isopropylacrylamide polymer comprises the following steps: placing acrylamide and N-isopropyl acrylamide into a reaction container according to a molar ratio of 1:3, adding a water solvent, uniformly mixing, adding azobisisobutyronitrile with the total molar amount of 0.8 percent of the monomer, glutaraldehyde with the total molar amount of 5 percent of the monomer and nano calcium carbonate particles with the total mass of 1.5 percent of the monomer under the protection of nitrogen, stirring and reacting for 8 hours in a constant-temperature water bath at 70 ℃, taking out a reaction product, soaking in water and adjusting the pH to 5.5 for reaction, adjusting the pH to be neutral after the reaction, continuously soaking for 2 days after water replacement, cleaning, and performing vacuum drying to obtain a target product for removing impurities.
Example 4
A warming patch with sustained-release health-care function comprises a porous hydrogel type heating source, a non-woven fabric inner bag wrapping the porous hydrogel type heating source, an essential oil microcapsule, a non-woven fabric outer bag wrapping the non-woven fabric inner bag and the essential oil microcapsule, a gelatin bonding layer arranged on one side of the outer surface of the non-woven fabric outer bag, and an airtight packaging bag wrapping the non-woven fabric outer bag; the inner surface of the non-woven fabric inner bag is sequentially stuck with a waterproof breathable film (the porosity is 96%) and a modified N-isopropyl acrylamide polymer coating film with the thickness of 0.15 mm; the non-woven inner bag and the non-woven outer bag are made of viscose staple fibers compounded with far infrared particles.
The preparation method of the essential oil microcapsule comprises the following steps: adding essential oil (rose essential oil) into ethanol, adding beta-cyclodextrin powder into ethanol in batches, stirring, and taking out after saturated adsorption; melting paraffin with melting point of about 42 ℃, immersing saturated and adsorbed beta-cyclodextrin powder into the melted paraffin, immediately taking out the saturated and adsorbed beta-cyclodextrin powder, immersing the saturated and adsorbed beta-cyclodextrin powder into ice water for cooling, and removing surface moisture after taking out to obtain the essential oil microcapsule.
The preparation method of the viscose staple fiber compounded with the far infrared particles comprises the following steps: and (2) spraying the spinning solution from a spinneret plate through a spinning assembly to form primary silk, blowing the primary silk by using hot nitrogen with far infrared particles (volcanic rock powder), attaching the far infrared particles to the surface of the primary silk, and curing to obtain the short fiber compounded with the far infrared particles.
The porous hydrogel type heating source comprises the following components: 40 wt% of iron powder, 13 wt% of porous water-absorbing resin (polyacrylic resin), 3 wt% of vermiculite, 3 wt% of activated carbon, 1 wt% of sodium chloride and 40 wt% of water.
The preparation method of the modified N-isopropylacrylamide polymer comprises the following steps: placing acrylamide and N-isopropyl acrylamide into a reaction container according to a molar ratio of 1:4, adding a water solvent, uniformly mixing, adding azobisisobutyronitrile with the total molar amount of 0.6 percent of the monomer, glutaraldehyde with the total molar amount of 3 percent of the monomer and nano calcium carbonate particles with the total mass of 1 percent of the monomer under the protection of nitrogen, stirring and reacting for 9 hours in a constant-temperature water bath at 65 ℃, taking out a reaction product, soaking in water and adjusting the pH to 5 for reaction, adjusting the pH to be neutral after the reaction, continuously soaking for 2 days after water replacement, cleaning and removing impurities, and performing vacuum drying to obtain a target product.
Example 5
A warming patch with sustained-release health-care function comprises a porous hydrogel type heating source, a non-woven fabric inner bag wrapping the porous hydrogel type heating source, an essential oil microcapsule, a non-woven fabric outer bag wrapping the non-woven fabric inner bag and the essential oil microcapsule, a gelatin bonding layer arranged on one side of the outer surface of the non-woven fabric outer bag, and an airtight packaging bag wrapping the non-woven fabric outer bag; the inner surface of the non-woven fabric inner bag is sequentially stuck with a waterproof breathable film (the porosity is 98%) and a modified N-isopropyl acrylamide polymer coating film with the thickness of 0.15 mm; the non-woven inner bag and the non-woven outer bag are made of polyester staple fibers compounded with far infrared particles.
The preparation method of the essential oil microcapsule comprises the following steps: adding essential oil (Pelargonium essential oil-thyme essential oil compound essential oil) into ethanol, adding beta-cyclodextrin powder into ethanol in batches, stirring, and taking out after saturated adsorption; melting paraffin with melting point of about 50 ℃, immersing saturated and adsorbed beta-cyclodextrin powder into the melted paraffin, immediately taking out the saturated and adsorbed beta-cyclodextrin powder, immersing the saturated and adsorbed beta-cyclodextrin powder into ice water for cooling, and removing surface moisture after taking out to obtain the essential oil microcapsule.
The preparation method of the polyester short fiber compounded with the far infrared particles comprises the following steps: and (2) spraying the spinning solution from a spinneret plate through a spinning assembly to form primary silk, blowing the primary silk by using hot nitrogen with far infrared particles (medical stone powder), attaching the far infrared particles to the surface of the primary silk, and curing to obtain the short fiber compounded with the far infrared particles.
The porous hydrogel type heating source comprises the following components: 40 wt% of iron powder, 13 wt% of porous water-absorbing resin (polyacrylic resin), 3 wt% of vermiculite, 3 wt% of activated carbon, 1 wt% of sodium chloride and 40 wt% of water.
The preparation method of the modified N-isopropylacrylamide polymer comprises the following steps: placing acrylamide and N-isopropyl acrylamide into a reaction container according to a molar ratio of 1:4, adding a water solvent, uniformly mixing, adding azobisisobutyronitrile with the total molar amount of 0.6 percent of the monomer, glutaraldehyde with the total molar amount of 3 percent of the monomer and nano calcium carbonate particles with the total mass of 1 percent of the monomer under the protection of nitrogen, stirring and reacting for 9 hours in a constant-temperature water bath at 65 ℃, taking out a reaction product, soaking in water and adjusting the pH to 5 for reaction, adjusting the pH to be neutral after the reaction, continuously soaking for 2 days after water replacement, cleaning and removing impurities, and performing vacuum drying to obtain a target product.
Comparative example 1
Comparative example 1 differs from example 1 only in that: the essential oil microcapsules are not subjected to paraffin coating treatment.
Comparative example 2
Comparative example 2 differs from example 1 only in that: the non-woven fabric is not provided with a coating film on the inner wearing side.
Comparative example 3
Comparative example 3 differs from example 1 only in that: the porous hydrogel type heating source comprises the following components: 45 wt% of iron powder, 11.5 wt% of porous water-absorbing resin (polyvinyl alcohol resin), 13 wt% of vermiculite, 8 wt% of activated carbon, 2.5 wt% of sodium chloride and 20 wt% of water.
Comparative example 4
Comparative example 4 differs from example 1 only in that: the porous hydrogel type heating source comprises the following components: 40 wt% of iron powder, 12.5 wt% of porous water-absorbing resin (polyacrylic resin), 4 wt% of vermiculite, 4 wt% of activated carbon, 8 wt% of sodium chloride and 31.5 wt% of water.
Comparative example 5
Comparative example 5 differs from example 1 only in that: modified N-isopropylacrylamide Polymer: the molar ratio of acrylamide to N-isopropylacrylamide was 1: 5.
Comparative example 6
Comparative example 6 differs from example 1 only in that: in the preparation of the modified N-isopropylacrylamide polymer, calcium carbonate fine particles were not added.
The heating patches obtained in example 1 and comparative examples 1 to 6 (specification of 50g of heating source and 10g of essential oil microcapsule) were subjected to a heating capacity test at 0 ℃.
The fragrance sensory evaluation grades are as follows in sequence: very concentrated-5, more concentrated-4, typically-3, light-2, none-1.
As can be seen from the comparison of the data in the table, in the aspect of the heating temperature, the heating patch in the embodiment 1 has better controllability for the highest temperature, and heats more uniformly, and the situations of high temperature in the early and middle periods and low temperature in the later period do not occur. The comparative examples 1 to 6 have different disadvantages.
In the sense of fragrance, the essential oil microcapsule of comparative example 1 was partially volatilized before use due to the paraffin coating. And when the heat is generated for 2 hours, a large amount of essential oil can be volatilized, but the essential oil is gradually exhausted after 4 hours. In contrast, in example 1 and comparative examples 2 to 6, the paraffin coating is used, so that although the volatilization amount is small in the early stage, the sustained release can be continuously and stably released in the middle and later stages, and the sustained release effect is better.
The raw materials and equipment used in the invention are common raw materials and equipment in the field if not specified; the methods used in the present invention are conventional in the art unless otherwise specified.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, alterations and equivalents of the above embodiments according to the technical spirit of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (8)
1. A heating patch with a slow-release health care function is characterized in that: the device comprises a heating source, a non-woven fabric inner bag wrapping the heating source, an essential oil microcapsule, a non-woven fabric outer bag wrapping the non-woven fabric inner bag and the essential oil microcapsule, a bonding layer arranged on one side of the outer surface of the non-woven fabric outer bag and an airtight packaging bag wrapping the non-woven fabric outer bag; the inner surface of the non-woven fabric inner bag is pasted with a waterproof breathable film; the non-woven inner bag and the non-woven outer bag are made of short fibers compounded with far infrared particles;
the preparation method of the essential oil microcapsule comprises the following steps: adding the essential oil into ethanol, adding beta-cyclodextrin powder into the ethanol in batches, stirring uniformly, and taking out after saturated adsorption; melting paraffin with a melting point of 40-50 ℃, immersing saturated and adsorbed beta-cyclodextrin powder into the molten paraffin, immediately taking out, immersing into ice water for cooling, and removing surface moisture after taking out to obtain essential oil microcapsules;
a modified N-isopropyl acrylamide polymer coating is also arranged on the waterproof breathable film on the inner surface of the non-woven fabric inner bag; the preparation method of the modified N-isopropylacrylamide polymer comprises the following steps: placing acrylamide and N-isopropyl acrylamide into a reaction container according to a molar ratio of 1:3-4, adding a water solvent, uniformly mixing, adding azobisisobutyronitrile with the total molar amount of 0.6-0.8% of the monomers, glutaraldehyde with the total molar amount of 3-5% of the monomers and calcium carbonate particles with the total mass of 0.5-1.5% of the monomers under the protection of nitrogen, stirring and reacting in a constant-temperature water bath at 60-70 ℃ for 8-12h, taking out a reaction product, soaking in water, adjusting the pH value to 5.5-6.5 for reaction, adjusting the pH value to neutral after the reaction, replacing water, continuing to soak for 1-2 days, cleaning and removing impurities, and performing vacuum drying to obtain a target product.
2. The warming patch according to claim 1, wherein the essential oil is at least one selected from the group consisting of rose essential oil, sandalwood essential oil, cinnamon essential oil, lavender essential oil, lemon essential oil, geranium essential oil, mint essential oil, thyme essential oil, camphor essential oil, and tea tree essential oil.
3. The warming patch with the slow-release health care function as claimed in claim 1, wherein the preparation method of the short fiber compounded with the far infrared particles is as follows: and (3) spraying the spinning solution from a spinneret plate through a spinning assembly to form primary yarns, blowing the primary yarns by using hot nitrogen with far infrared particles, attaching the far infrared particles to the surfaces of the primary yarns, and curing to obtain the short fibers compounded with the far infrared particles.
4. The warming patch with the slow-release health care function according to claim 1 or 3, wherein the far infrared particles are selected from bamboo charcoal powder, tourmaline powder, medical stone powder and volcanic rock powder.
5. A warming patch with a slow-release health-care function as claimed in claim 1 or 3, wherein the short fiber is polyester, polypropylene, polyethylene or viscose texture.
6. The warming patch with the slow-release health care function according to claim 1, wherein the heating source is a porous hydrogel type heating source and comprises the following components: 40-50 wt% of iron powder, 10-15 wt% of porous water-absorbing resin, 3-5 wt% of vermiculite, 3-5 wt% of activated carbon, 1-5 wt% of sodium chloride and 30-40 wt% of water.
7. The warming patch with the slow-release health care function according to claim 6, wherein the porous water-absorbent resin is polyacrylic resin or polyvinyl alcohol resin.
8. The warming patch with the slow-release health care function according to claim 1, wherein the adhesive layer is a gelatin layer.
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| CN110151390A (en) * | 2019-05-30 | 2019-08-23 | 湖北普爱药业有限公司 | A kind of formula of heating paste |
| CN110229276B (en) * | 2019-06-20 | 2022-01-07 | 吉林化工学院 | Preparation method of porous temperature-sensitive microgel |
| CN112693180B (en) * | 2019-10-23 | 2023-04-11 | 华楙生技股份有限公司 | Sustained release structure of health care component |
| CN111839887A (en) * | 2020-08-19 | 2020-10-30 | 福建恒安集团有限公司 | Fragrant warm plaster |
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