Hemp antibacterial cotton sliver and preparation method thereof

Abstract

The invention belongs to the technical field of personal care products, and particularly relates to a China-hemp antibacterial cotton sliver and a preparation method thereof. The hemp fibers and the bamboo fibers are mixed, the combination of the hemp fibers and the bamboo fibers can enhance the overall antibacterial property and hygroscopicity of the cotton sliver, the softness and comfort of the hemp fibers and the bamboo fibers are improved after biological enzyme treatment, the hemp fibers and the bamboo fibers have good compatibility with the plant extract, the activity of the plant extract is kept, and the cotton sliver is good in antibacterial property and antibacterial property. The prepared plant composite essence enables the plant essence to be slowly released, and it is ensured that the cotton sliver continuously plays a role in inhibiting bacteria and relieving in the using process. The prepared China-hemp antibacterial cotton sliver has the effects of long-acting bacteriostasis, anti-inflammation, analgesia and long-acting relieving, the risk of inflammation infection can be effectively reduced, and a durable and comfortable safety guard is brought.

Description

Technical Field

[0001] The invention belongs to the technical field of tampons, and in particular relates to a hemp antibacterial tampon and a preparation method thereof. Background Art

[0002] As a plant fiber with natural antibacterial properties, hemp has been widely used in the textile and medical fields. Hemp fiber contains a large amount of natural antibacterial ingredients, which have inhibitory effects on a variety of bacteria and fungi. Hemp fiber also has excellent chemical adsorption properties. Its porous structure increases its surface area and greatly improves its adsorption performance. Therefore, tampons made of hemp fiber should have excellent antibacterial properties and good moisture absorption and perspiration performance.

[0003] Traditional female tampons are mainly made of cotton fibers or other synthetic fibers. Although they can meet basic moisture absorption and hygiene needs, they have certain deficiencies in antibacterial performance. Especially in humid environments, ordinary tampons can easily become a breeding ground for bacteria, which can easily cause users to get infected and inflammatory. In order to solve these problems, some antibacterial tampons have appeared on the market. These products reduce bacterial growth by adding chemical synthetic antibacterial agents. However, these chemical synthetic antibacterial agents may irritate the skin, and long-term use may also have adverse effects on human health. Some tampons also use natural plant extracts to provide antibacterial effects, but these products usually apply the extracts directly on the surface of the tampons, resulting in rapid volatilization or failure of the active ingredients, and unable to provide long-term antibacterial effects. Based on this, how to develop an antibacterial tampons with long-lasting antibacterial and analgesic effects is a technical problem that needs to be solved urgently. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention proposes a hemp antibacterial tampon and a preparation method thereof. The present invention adopts hemp fiber and bamboo fiber to mix, and the combination of the two can enhance the overall antibacterial and hygroscopic properties of the tampon. After biological enzyme treatment, the softness and comfort of hemp fiber and bamboo fiber are improved, and the hygroscopicity and air permeability are improved. Hemp fiber and bamboo fiber have good compatibility with plant extracts, which helps to maintain the activity of plant extracts and increase the antibacterial and soothing properties of tampon. The plant composite essence prepared by the present invention and the plant essence mixed with the composite nanofiber membrane can be slowly released to ensure that the tampon continues to play an antibacterial and soothing effect during use. The added angelica extract has the effects of nourishing blood and activating blood circulation, regulating menstruation and relieving pain, which helps to relieve menstrual discomfort. The Herba Blumeae extract has antibacterial, anti-inflammatory and analgesic effects, and the Herba Leonuri extract has the effects of activating blood circulation and regulating menstruation, promoting diuresis and reducing swelling. The hemp antibacterial tampon prepared by the present invention has the effects of long-term antibacterial, anti-inflammatory, analgesic and long-term soothing, which can effectively reduce the risk of infection and inflammation, and bring lasting and comfortable safety protection.

[0005] In order to achieve the above technical objectives, the technical solutions adopted by the present invention are as follows: The present invention provides a hemp antibacterial tampon, which is prepared from the following raw materials in parts by weight: 70-90 parts of hemp fiber, 20-50 parts of bamboo fiber, 15-30 parts of angelica extract, 1-8 parts of Blumea Balsamifera extract, 1-20 parts of Leonurus japonicus extract, 5-15 parts of plant composite essence, and 5-25 parts of moisturizer; Preferably, the hemp fiber has a length of 30-50 mm and a fineness of 20-40 μm, and the bamboo fiber has a length of 10-25 mm and a fineness of 50-65 μm.

[0006] Preferably, the moisturizer is one of propylene glycol, butylene glycol and glycerin.

[0007] Furthermore, the preparation method of the Blumea Balsamifera extract is: grind Blumea Balsamifera, pass through a 100-mesh sieve, extract with anhydrous ethanol, the dosage ratio of Blumea Balsamifera to anhydrous ethanol is 1-3 g:10 mL, extract for 2 h, and filter to obtain the Blumea Balsamifera extract.

[0008] Furthermore, the raw materials for preparing the plant composite essence are: polylactic acid fiber, gelatin, honeysuckle extract, valerian extract, licorice extract, tea tree oil, peppermint oil and emulsifier, wherein the dosage ratio of the honeysuckle extract, valerian extract, licorice extract, tea tree oil, peppermint oil and emulsifier is 2 g:1 g:10 mL:1 mL:1 mL:20 mL.

[0009] The preparation method of the plant composite essence specifically comprises the following steps: A1, weigh polylactic acid fiber, cut it, crush it with a pulverizer, add it into 80 ℃ deionized water to form a polylactic acid fiber solution, stir for 1 hour, weigh gelatin, dissolve it in deionized water, stir it with a constant temperature stirrer, set the speed to 200-500rpm, set the temperature to 40-70 ℃, and set the time to 20-40 min to form a gelatin solution; A2, mixing the polylactic acid solution and the gelatin solution in a volume ratio of 1.5-4:1, and treating with an ultrasonic cleaning machine for 1 hour to obtain a mixed solution; A3, using the mixed solution prepared in step A2 to prepare a composite nanofiber membrane using an electrospinning machine, using a 23G metal needle to control the ejection of the electrospinning solution, the pumping speed is 1-3 mL / h, the applied voltage is 30 kV, the distance between the syringe needle tip and the receiver is 20-30 cm, the syringe swing speed is 3 mm / s, the receiver speed is 2000 r / min, the spinning environment temperature is 28 °C, the relative humidity is 60%, and the spinning time is 1-1.5 h to obtain a composite nanofiber membrane; A4, mixing honeysuckle extract, valerian extract, liquorice extract, tea tree oil and peppermint oil, adding an emulsifier to emulsify, stirring and mixing, stirring at 500-1000 rpm for 2-6 h to obtain an emulsion; A5, soaking the composite nanofiber membrane prepared in step A3 in the emulsion obtained in step A4 for 10-30 minutes to ensure that the emulsion completely infiltrates the composite nanofiber membrane to obtain the plant composite essence.

[0010] Furthermore, the preparation method of the extract of Xiecao is: take the leaves of Xiecao, clean them, crush them with a grinder and pass them through a 60-mesh sieve, mix them with water at a mass ratio of 1:15, heat and boil for 1 hour, filter, and dry to obtain the extract of Xiecao.

[0011] Furthermore, the preparation method of the licorice extract is: take dried licorice and grind it, pass it through a 60-mesh sieve, put the powder into a filter paper tube, place it in a Soxhlet extractor, add anhydrous ethanol at a dosage ratio of 1 g:12 mL, reflux extraction for 4 hours, filter, and obtain the licorice extract.

[0012] Furthermore, in step A1, the usage ratio of the polylactic acid fiber to deionized water is 1-5 g:25 mL, and the usage ratio of gelatin to deionized water is 1-3 g:30 mL.

[0013] Furthermore, the emulsifier is hydroxypropyl cellulose.

[0014] The present invention also provides a hemp antibacterial tampon and a preparation method thereof, which specifically comprises the following steps: S1, weighing hemp fiber and bamboo fiber by weight and mixing them, pretreating the hemp fiber and bamboo fiber with biological enzymes, taking angelica extract, Blumea balsamifera extract and Leonurus japonicus extract by weight, dissolving them in 3-15 parts of moisturizer to form a plant extract, and immersing the pretreated hemp fiber and bamboo fiber in the plant extract for 2-6 hours to obtain an impregnated fiber body; S2, dissolving the plant compound essence in 2-10 parts of moisturizer by weight to form a plant compound essence liquid, and coating the infiltrated fiber body obtained in step S1 with the plant compound essence liquid to obtain a mixed fiber layer; S3, the mixed fiber layer obtained in step S2 is laid out and pressed into a strip fiber layer, a cotton thread is fixed to the center of the strip fiber layer, the tail end of the cotton thread is exposed 9-20 cm outside the strip fiber layer, and the strip fiber layer is wrapped with a non-woven fabric, the non-woven fabric is impregnated with a plant composite essence liquid and dried, to obtain a cotton strip body; S4, packaging the cotton strips obtained in step S3 to obtain hemp antibacterial cotton strips.

[0015] Furthermore, the process of pretreating hemp fiber and bamboo fiber with biological enzymes in step S1 is specifically as follows: soaking the hemp fiber and bamboo fiber in water, mixing them with biological enzymes after they are completely soaked, preparing a biological enzyme solution, and completely immersing the hemp fiber and bamboo fiber in the biological enzyme solution, wherein the biological enzyme is a mixture of cellulase and hemicellulase, with a mass ratio of 1:1, a temperature of 40-60°C, a time of 6-24 h, and continuous stirring. After the biological enzyme treatment, the temperature is raised to 90°C for enzyme inactivation treatment for 10 min, and then the fibers are cleaned with water and dried before use.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The hemp antibacterial tampon prepared by the present invention adopts hemp fiber and bamboo fiber, and the combination of the two can enhance the overall antibacterial and hygroscopic properties of the tampon. After being treated with biological enzymes, the softness and comfort of the hemp fiber and bamboo fiber are improved, the specific surface area of ​​the hemp fiber is increased, and the hygroscopicity and air permeability are improved. The prepared plant composite essence, the nanofiber membrane, the hemp fiber and the bamboo fiber are combined, the compatibility between the plant extract and the fiber is improved, and the rapid loss of active ingredients during the preparation and use process is avoided. The nanofiber membrane is used to load the plant extract and the essential oil. The nanofiber membrane is used as a carrier, which is helpful to stabilize the active ingredients in the plant extract and the essential oil, prolong the lasting effect in the tampon, and the nanofiber membrane can control the release rate of the active ingredients to achieve slow release, prolong the antibacterial effect, and the composite nanofiber membrane With high specific surface area and hygroscopicity, the absorption capacity of the tampon is enhanced, and it remains dry and fresh during use. Hemp fiber and bamboo fiber have good air permeability and hygroscopicity. After combining with the composite nanofiber membrane, the comfort and air permeability of the antibacterial tampon are further improved. Honeysuckle extract and tea tree oil both have strong antibacterial effects. After combining with the composite nanofiber membrane, they can slowly release their active ingredients, enhance the antibacterial properties of the tampon, and prolong the antibacterial time. Licorice extract and valerian extract make their anti-inflammatory and sedative effects last longer. Combined with the cool feeling of peppermint oil, it can provide a more comprehensive soothing effect, help relieve menstrual anxiety and tension. The aroma of peppermint oil and tea tree oil can be released for a long time after combining with the composite nanofiber membrane, providing a refreshing use experience. Hemp fiber and bamboo fiber have good moisture absorption and perspiration properties. After biological enzyme treatment and the addition of plant compound essence, bacterial growth is reduced, and the moisture absorption and perspiration performance is further enhanced. Angelica extract, Blume Balm extract and Leonurus extract are added to the hemp antibacterial tampon prepared by the present invention. The Angelica extract has the effects of nourishing blood and activating blood circulation, regulating menstruation and relieving pain. It can act on the skin quickly when directly applied on the tampon, which helps to relieve menstrual discomfort. Blume Balm extract has antibacterial, anti-inflammatory and analgesic effects. Direct application can provide an immediate soothing effect. Leonurus extract has the effects of activating blood circulation and regulating menstruation, promoting diuresis and reducing swelling, which is very beneficial for menstrual care. The added moisturizer is not only used as a moisturizer alone, but also improves the antibacterial and antioxidant properties of the tampon, has a certain moisturizing ability, helps to maintain the softness of the tampon, and helps other antibacterial components to be better adsorbed on the fiber surface, thereby improving the antibacterial effect. Hemp fiber and bamboo fiber are both natural fibers, green and environmentally friendly, and can be biodegraded. Combined with plant composite essence, the hemp antibacterial tampon is made healthier and more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a SEM image of the fracture surface of the hemp antibacterial tampon prepared in the present invention. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0019] The experimental methods in the following examples are conventional methods unless otherwise specified; the experimental materials used in the following examples are purchased from commercial channels unless otherwise specified. Among them, the angelica extract and the motherwort extract were purchased from Shandong Pingju Biotechnology Co., Ltd., the honeysuckle extract was purchased from Changsha Shanghe Biotechnology Co., Ltd., and the cellulase and hemicellulase were purchased from Hunan Yunbang Biotechnology Co., Ltd.

[0020] Example 1: This example provides a hemp antibacterial tampon, which is prepared from the following raw materials in parts by weight: 70 parts of hemp fiber, 50 parts of bamboo fiber, 15 parts of angelica extract, 1 part of Blumea balsamifera extract, 1 part of Leonurus japonicus extract, 5 parts of plant compound essence, and 5 parts of propylene glycol; The preparation method of the Blumea Balsamifera extract is as follows: crush Blumea Balsamifera, pass through a 100-mesh sieve, extract with anhydrous ethanol, the dosage ratio of Blumea Balsamifera to anhydrous ethanol is 1 g:10 mL, extract for 2 h, and filter to obtain the Blumea Balsamifera extract.

[0021] The raw materials for preparing the plant composite essence are: polylactic acid fiber, gelatin, honeysuckle extract, valerian extract, licorice extract, tea tree oil, peppermint oil and emulsifier, wherein the amount ratio of the honeysuckle extract, valerian extract, licorice extract, tea tree oil, peppermint oil and emulsifier is 2 g:1 g:10 mL:1 mL:1 mL:20 mL.

[0022] The preparation method of the plant composite essence specifically comprises the following steps: A1, weigh the polylactic acid fiber, cut it, crush it with a pulverizer, add it into 80 ℃ deionized water to form a polylactic acid fiber solution, stir it for 1 h, weigh the gelatin and dissolve it in deionized water, stir it with a constant temperature stirrer, set the speed to 200 rpm, set the temperature to 40 ℃, and set the time to 20 min to form a gelatin solution; A2, mixing the polylactic acid solution and the gelatin solution in a volume ratio of 1.5:1, treating with an ultrasonic cleaner for 1 h, with the power of the ultrasonic cleaner set to 240 W, to obtain a mixed solution; A3, using the mixed solution prepared in step A2 to prepare a nanofiber membrane using an electrospinning machine, using a 23G metal needle to control the ejection of the electrospinning solution, the pumping speed is 1 mL / h, the applied voltage is 30 kV, the distance between the syringe needle tip and the receiver is 20 cm, the syringe swing speed is 3 mm / s, the receiver speed is 2000 r / min, the spinning environment temperature is 28 °C, the relative humidity is 60%, and the spinning time is 1 h to obtain a composite nanofiber membrane; A4, mixing honeysuckle extract, valerian extract, liquorice extract, tea tree oil and peppermint oil, adding emulsifier hydroxypropyl cellulose for emulsification, stirring and mixing, stirring at 500 rpm for 2 h to obtain an emulsion; A5, soaking the composite nanofiber membrane prepared in step A3 in the emulsion obtained in step A4 for 10 min to ensure that the emulsion completely infiltrates the composite nanofiber membrane, thereby obtaining the plant composite essence.

[0023] The preparation method of the extract of Xiecao is as follows: take the leaves of Xiecao, clean them, grind them through a 60-mesh sieve with a grinder, mix them with water in a mass ratio of 1:15, heat and boil for 1 hour, filter, and dry to obtain the extract of Xiecao.

[0024] The preparation method of licorice extract is as follows: take dried licorice and grind it, pass it through a 60-mesh sieve, put the powder into a filter paper tube, place it in a Soxhlet extractor, add anhydrous ethanol at a dosage ratio of 1 g:12 mL, reflux extraction for 4 hours, filter, and obtain the licorice extract.

[0025] This embodiment also provides a hemp antibacterial tampon and a preparation method thereof, which specifically comprises the following steps: S1, weigh hemp fiber and bamboo fiber by weight and mix them, pretreat hemp fiber and bamboo fiber with biological enzyme, the biological enzyme is a mixture of cellulase and hemicellulase, the mass ratio is 1:1, soak hemp fiber and bamboo fiber in water, mix with biological enzyme after being completely soaked, prepare biological enzyme solution, soak hemp fiber and bamboo fiber completely in biological enzyme solution, temperature is 60 ℃, time is 12 h, and stir continuously, after biological enzyme treatment, raise the temperature to 90 ℃ for enzyme inactivation treatment for 10 min, then wash with water, dry and use, take angelica extract, Blumea balsamifera extract and Leonurus japonicus extract by weight, dissolve in 3 parts of propylene glycol to form plant extract, immerse the pretreated hemp fiber and bamboo fiber in the plant extract for 2 h to obtain soaked fiber body; S2, dissolving the plant compound essence in 2 parts by weight of propylene glycol to form a plant compound essence liquid, and coating the infiltrated fiber body obtained in step S1 with the plant compound essence liquid to obtain a mixed fiber layer; S3, the mixed fiber layer obtained in step S2 is laid out and pressed into a strip fiber layer, a cotton thread is fixed to the center of the strip fiber layer, the tail end of the cotton thread is exposed 9 cm outside the strip fiber layer, and the strip fiber layer is wrapped with a non-woven fabric, the non-woven fabric is impregnated with a plant composite essence liquid and dried to obtain a cotton strip body; S4, packaging the cotton strips obtained in step S3 to obtain hemp antibacterial cotton strips.

[0026] Example 2: This example provides a hemp antibacterial tampon, which is prepared from the following raw materials in parts by weight: 80 parts of hemp fiber, 40 parts of bamboo fiber, 20 parts of angelica extract, 4 parts of Blumea balsamifera extract, 10 parts of Leonurus japonicus extract, 9 parts of plant compound essence, and 15 parts of butanediol; The preparation method of the Blumea Balsamifera extract is as follows: crush Blumea Balsamifera, pass through a 100-mesh sieve, extract with anhydrous ethanol, the dosage ratio of Blumea Balsamifera to anhydrous ethanol is 2 g:10 mL, extract for 2 h, and filter to obtain the Blumea Balsamifera extract.

[0027] The raw materials for preparing the plant composite essence are: polylactic acid fiber, gelatin, honeysuckle extract, valerian extract, licorice extract, tea tree oil, peppermint oil and emulsifier, wherein the amount ratio of the honeysuckle extract, valerian extract, licorice extract, tea tree oil, peppermint oil and emulsifier is 2 g:1 g:10 mL:1 mL:1 mL:20 mL.

[0028] The preparation method of the plant composite essence specifically comprises the following steps: A1, weigh the polylactic acid fiber, cut it, crush it with a pulverizer, add it into 80 ℃ deionized water to form a polylactic acid fiber solution, stir it for 1 h, weigh the gelatin and dissolve it in deionized water, stir it with a constant temperature stirrer, set the speed to 400 rpm, set the temperature to 50 ℃, and set the time to 30 min to form a gelatin solution; A2, mixing the polylactic acid solution and the gelatin solution in a volume ratio of 2.5:1, treating with an ultrasonic cleaner for 1 h, with the power of the ultrasonic cleaner set to 240 W, to obtain a mixed solution; A3, using the mixed solution prepared in step A2 to prepare a nanofiber membrane using an electrospinning machine, using a 23G metal needle to control the ejection of the electrospinning solution, the pumping speed is 2 mL / h, the applied voltage is 30 kV, the distance between the syringe needle tip and the receiver is 21 cm, the syringe swing speed is 3 mm / s, the receiver speed is 2000 r / min, the spinning environment temperature is 28 °C, the relative humidity is 60%, and the spinning time is 1.2 h to obtain a composite nanofiber membrane; A4, mixing honeysuckle extract, valerian extract, liquorice extract, tea tree oil and peppermint oil, adding emulsifier hydroxypropyl cellulose to emulsify, stirring and mixing, stirring at 8000 rpm for 4 h to obtain an emulsion; A5, soaking the composite nanofiber membrane prepared in step A3 in the emulsion obtained in step A4 for 20 min to ensure that the emulsion completely infiltrates the composite nanofiber membrane, thereby obtaining the plant composite essence.

[0029] The preparation methods of the extract of Glycyrrhiza uralensis and the liquorice extract are the same as those in Example 1.

[0030] This embodiment also provides a hemp antibacterial tampon and a preparation method thereof, which specifically comprises the following steps: S1, weigh hemp fiber and bamboo fiber by weight and mix them, pretreat hemp fiber and bamboo fiber with biological enzyme, the biological enzyme is a mixture of cellulase and hemicellulase, the mass ratio is 1:1, soak hemp fiber and bamboo fiber in water, mix with biological enzyme after being completely soaked, prepare biological enzyme solution, soak hemp fiber and bamboo fiber completely in biological enzyme solution, temperature is 60 ℃, time is 12 h, and stir continuously, after biological enzyme treatment, raise the temperature to 90 ℃ for enzyme inactivation treatment for 10 min, then wash with water, dry and use, take angelica extract, Blumea Balsamifera extract and Leonurus japonicus extract by weight, dissolve in 9 parts of butanediol to form plant extract, soak the pretreated hemp fiber and bamboo fiber in the plant extract for 4 h to obtain soaked fiber body; S2, dissolving the plant compound essence in 6 parts by weight of butanediol to form a plant compound essence liquid, and coating the infiltrated fiber body obtained in step S1 with the plant compound essence liquid to obtain a mixed fiber layer; S3, the mixed fiber layer obtained in step S2 is laid out and pressed into a strip fiber layer, a cotton thread is fixed to the center of the strip fiber layer, the tail end of the cotton thread is exposed 15 cm outside the strip fiber layer, and the strip fiber layer is wrapped with a non-woven fabric, the non-woven fabric is impregnated with a plant composite essence liquid and dried to obtain a cotton strip body; S4, packaging the cotton strips obtained in step S3 to obtain hemp antibacterial cotton strips.

[0031] Example 3: This example provides a hemp antibacterial tampon, which is prepared from the following raw materials in parts by weight: 90 parts of hemp fiber, 20 parts of bamboo fiber, 30 parts of angelica extract, 8 parts of Blumea balsamifera extract, 20 parts of Leonurus japonicus extract, 15 parts of plant compound essence, and 25 parts of glycerin; The preparation method of the Blumea Balsamifera extract is as follows: crush Blumea Balsamifera, pass through a 100-mesh sieve, extract with anhydrous ethanol, the dosage ratio of Blumea Balsamifera to anhydrous ethanol is 3 g:10 mL, extract for 2 h, and filter to obtain the Blumea Balsamifera extract.

[0032] The raw materials for preparing the plant composite essence are: polylactic acid fiber, gelatin, honeysuckle extract, valerian extract, licorice extract, tea tree oil, peppermint oil and emulsifier, wherein the amount ratio of the honeysuckle extract, valerian extract, licorice extract, tea tree oil, peppermint oil and emulsifier is 2 g:1 g:10 mL:1 mL:1 mL:20 mL.

[0033] The preparation method of the plant composite essence specifically comprises the following steps: A1, weigh polylactic acid fiber, cut it, crush it with a pulverizer, add it into 80 ℃ deionized water to form a polylactic acid fiber solution, stir it for 1 h, weigh gelatin, dissolve it in deionized water, stir it with a constant temperature stirrer, set the speed to 500 rpm, set the temperature to 70 ℃, and set the time to 40 min to form a gelatin solution; A2, mixing the polylactic acid solution and the gelatin solution in a volume ratio of 4:1, treating with an ultrasonic cleaner for 1 h, with the power of the ultrasonic cleaner set to 240 W, to obtain a mixed solution; A3, using the mixed solution prepared in step A2 to prepare a nanofiber membrane using an electrospinning machine, using a 23G metal needle to control the ejection of the electrospinning solution, the pumping speed is 3 mL / h, the applied voltage is 30 kV, the distance between the syringe needle tip and the receiver is 30 cm, the syringe swing speed is 3 mm / s, the receiver speed is 2000 r / min, the spinning environment temperature is 28 °C, the relative humidity is 60%, and the spinning time is 1.5 h to obtain a composite nanofiber membrane; A4, mixing honeysuckle extract, valerian extract, liquorice extract, tea tree oil and peppermint oil, adding emulsifier hydroxypropyl cellulose to emulsify, stirring and mixing, stirring at 1000 rpm for 2-6 h to obtain an emulsion; A5, soaking the composite nanofiber membrane prepared in step A3 in the emulsion obtained in step A4 for 10-30 min to ensure that the emulsion completely infiltrates the composite nanofiber membrane, thereby obtaining the plant composite essence.

[0034] The preparation methods of the extract of Glycyrrhiza uralensis and the liquorice extract are the same as those in Example 1.

[0035] This embodiment also provides a hemp antibacterial tampon and a preparation method thereof, which specifically comprises the following steps: S1, weigh hemp fiber and bamboo fiber by weight and mix them, pretreat hemp fiber and bamboo fiber with biological enzyme, the biological enzyme is a mixture of cellulase and hemicellulase, the mass ratio is 1:1, soak hemp fiber and bamboo fiber in water, mix with biological enzyme after being completely soaked, prepare biological enzyme solution, soak hemp fiber and bamboo fiber completely in biological enzyme solution, temperature is 60 ℃, time is 12 h, and stirring is continued, after biological enzyme treatment, raise the temperature to 90 ℃ for enzyme inactivation treatment for 10 min, wash with water, dry before use, take angelica extract, Blumea Balsamifera extract and Leonurus japonicus extract by weight, dissolve in 15 parts of glycerol to form plant extract, immerse the pretreated hemp fiber and bamboo fiber in the plant extract for 6 h to obtain soaked fiber body; S2, dissolving the plant compound essence in 10 parts of glycerin by weight to form a plant compound essence liquid, and coating the infiltrated fiber body obtained in step S1 with the plant compound essence liquid to obtain a mixed fiber layer; S3, the mixed fiber layer obtained in step S2 is laid out and pressed into a strip fiber layer, a cotton thread is fixed to the center of the strip fiber layer, the tail end of the cotton thread is exposed 20 cm outside the strip fiber layer, and the strip fiber layer is wrapped with a non-woven fabric, the non-woven fabric is impregnated with a plant composite essence liquid and dried to obtain a cotton strip body; S4, packaging the cotton strips obtained in step S3 to obtain hemp antibacterial cotton strips.

[0036] The difference between Comparative Example 1 and Example 1 is that the hemp fiber and the bamboo fiber are not pretreated in step S1, and the rest is the same as Example 1.

[0037] The difference between Comparative Example 2 and Example 1 is that the plant extract in step S1 is applied by coating, and the rest is the same as Example 1.

[0038] The difference between Comparative Example 3 and Example 1 is that step S2 does not use the form of plant composite essence for coating, and the preparation method of the hemp antibacterial tampon is as follows: weigh hemp fiber and bamboo fiber by weight and mix them, pretreat the hemp fiber and bamboo fiber with biological enzymes, and then immerse them in plant extract for 2-6 hours; mix honeysuckle extract, valerian extract, licorice extract, tea tree oil and peppermint oil, stir and mix, and then directly coat them, then dry, lay a net, and press them into a strip fiber layer, fix the cotton thread in the center of the strip fiber layer, expose the tail end of the cotton thread 9-20 cm outside the strip fiber layer, and wrap the strip fiber layer with non-woven fabric to obtain a cotton strip body; package the obtained cotton strip body to obtain the hemp antibacterial tampon.

[0039] Experimental Example 1: The GB\T20944.3-2008 oscillation method was used to perform an antibacterial test. The hemp antibacterial cotton strips prepared in Examples 1-3 and Comparative Examples 1-3 were used as samples to test the antibacterial effects on Escherichia coli, Staphylococcus aureus and Candida albicans. The samples were tested using the prepared bacterial inoculum and Candida albicans inoculum, and 3 blank control groups were set up. After oscillation for 18 h, the results were as follows: Y=(W t -Q t ) / Wt×100%, to calculate the antibacterial rate, where Y is the antibacterial rate of the sample, W t Q is the average of the live bacterial concentrations of Escherichia coli, Staphylococcus aureus and Candida albicans in the three control samples in 18 h oscillation contact flasks. t The average value of the live bacteria concentration in the flask after 18 hours of oscillation contact of the hemp antibacterial tampon samples prepared in Examples 1-3 and Comparative Examples 1-3, and the calculated antibacterial rate results are shown in Table 1.

[0040] Experimental Example 2: Hygroscopicity test. The hygroscopicity test was carried out according to GB / T 21655.1-2008. The antibacterial cotton strips prepared in Examples 1-3 and Comparative Examples 1-3 were used as test samples. Each sample was placed flat and wrinkle-free. The original mass of each sample was weighed to an accuracy of 0.001 g. The sample was placed in a container filled with grade 3 water. The sample naturally sank after absorbing water. If the sample did not sink, the sample was pressed into the water and then lifted up. This was repeated twice. The sample was completely soaked in water for 5 min and then taken out. The sample was naturally flattened and vertically hung. The water in the sample naturally dripped. When the sample stopped dripping (when the time interval between two drops of water was greater than 30 s, it was considered that the sample stopped dripping), the sample was immediately taken out with tweezers and weighed to an accuracy of 0.001. g, according to A=(m-m0)\m0×100, where A is the water absorption rate (%), m0 is the original mass of the sample, in grams (g), and m is the mass of the sample after being soaked and dripped with water, in grams (g). The calculated water absorption rate is shown in Table 1.

[0041] Table 1

[0042] The results in Table 1 show that the inhibition rates of Examples 1-3 against Escherichia coli, Staphylococcus aureus and Candida albicans are all above 90%, indicating that the hemp antibacterial tampons prepared by the present invention have good antibacterial effects and can effectively avoid infection and inflammation. It can be clearly seen from Table 1 that the water absorption rate and antibacterial rate of Examples 1-3 are higher than those of Comparative Examples 1-3, among which the water absorption rate of Example 2 reaches 262%, which has good hygroscopic properties and can meet the hygroscopicity requirements of tampons.

[0043] Experimental Example 3: A skin irritation test was conducted on rabbits. Rabbits with healthy and undamaged skin were selected as test subjects. The hemp antibacterial cotton strips prepared in Example 1-33 and Comparative Example 1-3 were used as samples. The hair on both sides of the spine of the rabbit's back was removed 12 hours before the test (an area of ​​10×15 cm) and used as the test and observation site. The hemp antibacterial cotton strip samples were directly contacted with the skin on both sides of the rabbit's spine. After 24 h, 48 h and 72 h of contact, the skin was observed for irritation reactions such as erythema and water, and scores were given according to the skin reactions. The irritation scores are shown in Table 2.

[0044] Table 2

[0045] The results in Table 2 show that the hemp antibacterial tampons prepared by the present invention are safe and non-irritating and can be used with peace of mind.

[0046] Figure 1 The SEM image of the fracture surface of the hemp antibacterial tampon prepared by the present invention shows that the fibers are tightly bonded to each other and are well bonded to the polylactic acid fibers in the plant composite essence, indicating that the hemp antibacterial tampon of the present invention is successfully prepared and has good tensile elasticity, and can maintain good comfort during use.

[0047] The present invention and its implementation methods are described above, which is not restrictive. The drawings are only one of the implementation methods of the present invention, and the actual application is not limited thereto. In short, if ordinary technicians in the field are inspired by it and design methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention, they should all fall within the protection scope of the present invention.

Claims

1. A hemp antibacterial tampon, characterized in that: The hemp antibacterial tampon is prepared from the following raw materials in parts by weight: 70-90 parts of hemp fiber, 20-50 parts of bamboo fiber, 15-30 parts of angelica extract, 1-8 parts of Blumea Balsamifera extract, 1-20 parts of Leonurus japonicus extract, 5-15 parts of plant compound essence, and 5-25 parts of moisturizer; The hemp fiber has a length of 30-50 mm and a fineness of 20-40 μm, and the bamboo fiber has a length of 10-25 mm and a fineness of 50-65 μm; The raw materials for preparing the plant composite essence are: polylactic acid fiber, gelatin, honeysuckle extract, valerian extract, licorice extract, tea tree oil, peppermint oil and emulsifier, wherein the amount ratio of honeysuckle extract, valerian extract, licorice extract, tea tree oil, peppermint oil and emulsifier is 2 g:1 g:10 mL:1 mL:1 mL:20 mL; The preparation method of the plant composite essence specifically comprises the following steps: A1, weigh polylactic acid fibers, cut them, crush them, add them into deionized water to form a polylactic acid fiber solution, stir them, weigh gelatin, dissolve them in deionized water, stir them, and form a gelatin solution; A2, mixing the polylactic acid solution and the gelatin solution in a volume ratio of 1.5-4:1, and ultrasonically treating to obtain a mixed solution; A3, using the mixed solution prepared in step A2 to prepare a composite nanofiber membrane using an electrospinning machine; A4, mixing the honeysuckle extract, valerian extract, liquorice extract, tea tree oil and peppermint oil, adding an emulsifier for emulsification, stirring and mixing to obtain an emulsion; A5, soaking the composite nanofiber membrane prepared in step A3 in the emulsion obtained in step A4 to obtain the plant composite essence.

2. The hemp antibacterial tampon according to claim 1, characterized in that: The preparation method of the Blumea Balsamifera extract is as follows: crush Blumea Balsamifera, pass through a 100-mesh sieve, extract with anhydrous ethanol, wherein the amount ratio of Blumea Balsamifera to anhydrous ethanol is 1-3 g:10 mL, extract for 2 h, filter, and obtain the Blumea Balsamifera extract.

3. The hemp antibacterial tampon according to claim 1, characterized in that: In step A1, the amount ratio of the polylactic acid fiber to deionized water is 1-5 g:25 mL, and the amount ratio of gelatin to deionized water is 1-3 g:30 mL. In step A1, the stirring is carried out using a constant temperature stirrer, the stirring speed is set to 200-500 rpm, the temperature is set to 40-70 ° C, and the time is set to 20-40 min.

4. The hemp antibacterial tampon according to claim 1, characterized in that: In step A3, the electrospinning machine uses a 23G metal needle to control the ejection of the electrospinning solution, the pumping speed is 1-3 mL / h, the applied voltage is 30 kV, the distance between the syringe needle tip and the receiver is 20-30 cm, the syringe swing speed is 3 mm / s, the receiver speed is 2000 r / min, the spinning environment temperature is 28 °C, the relative humidity is 60%, and the spinning time is 1-1.5 h.

5. The hemp antibacterial tampon according to claim 1, characterized in that: The emulsifier is hydroxypropyl cellulose. In step A5, the stirring is performed using a thermostatic stirrer, the stirring temperature is set to 30-60° C., the speed is set to 300-800 rpm, and the time is set to 15-30 min.

6. The hemp antibacterial tampon according to claim 1, characterized in that: The preparation method of the extract of Xiecao is as follows: take the leaves of Xiecao, clean them, crush them with a grinder and pass them through a 60-mesh sieve, mix them with water at a mass ratio of 1:15, heat and boil for 1 hour, filter and dry them to obtain the extract of Xiecao; The preparation method of the licorice extract is as follows: taking dried licorice and crushing it, passing it through a 60-mesh sieve, putting the powder into a filter paper tube, placing it in a Soxhlet extractor, adding anhydrous ethanol at a dosage ratio of 1 g:12 mL, reflux extraction for 4 hours, filtering, and obtaining the licorice extract.

7. The hemp antibacterial tampon according to claim 1, characterized in that: The emulsifier is hydroxypropyl cellulose, the cross-linking agent is tannic acid, and the moisturizing agent is one of propylene glycol, butylene glycol and glycerin.

8. A method for preparing the hemp antibacterial tampon according to any one of claims 1 to 7, characterized in that: The specific steps include: S1, weighing hemp fiber and bamboo fiber by weight and mixing them, pretreating the hemp fiber and bamboo fiber with biological enzymes, taking angelica extract, Blumea balsamifera extract and Leonurus japonicus extract by weight, adding 3-15 parts of moisturizer and mixing them to form a plant extract, and immersing the pretreated hemp fiber and bamboo fiber in the plant extract for 2-6 hours to obtain an impregnated fiber body; S2, dissolving the plant compound essence in 2-10 parts of moisturizer by weight to form a plant compound essence liquid, and coating the infiltrated fiber body obtained in step S1 with the plant compound essence liquid to obtain a mixed fiber layer; S3, the mixed fiber layer obtained in step S2 is laid out and pressed into a strip fiber layer, a cotton thread is fixed to the center of the strip fiber layer, the tail end of the cotton thread is exposed 9-20 cm outside the strip fiber layer, and the strip fiber layer is wrapped with a non-woven fabric to obtain a cotton strip body; S4, packaging the cotton strips obtained in step S3 to obtain hemp antibacterial cotton strips.

9. The method for preparing the hemp antibacterial tampon according to claim 8, characterized in that: In step S1, the process of pretreating hemp fiber and bamboo fiber with biological enzymes is specifically as follows: soaking the hemp fiber and bamboo fiber in water, mixing them with biological enzymes after they are completely soaked, preparing the biological enzymes into biological enzyme solutions, and completely immersing the hemp fiber and bamboo fiber in the biological enzyme solution at a temperature of 60°C for 12 hours with continuous stirring. After biological enzyme treatment, the enzymes are inactivated and then washed with water, and dried before use.

10. The method for preparing the hemp antibacterial tampon according to claim 9, characterized in that: The biological enzyme is a mixture of cellulase and hemicellulase, with a mass ratio of 1:1.

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