Antibacterial and allergy-free treatment method for non-woven elastic lining medical bandage

Abstract

The invention provides an antibacterial and allergy-free treatment method for a non-woven elastic lining medical bandage, and relates to the technical field of non-woven fabric treatment. The antibacterial and allergy-free treatment method for the non-woven elastic lining medical bandage comprises the following steps: step 1, preparing a composite antibacterial agent, and mixing nano-silver particles with at least one natural plant extract selected from tea tree essential oil and coptis chinensis extract according to a mass ratio of 1: 3; 2, modified polyester fibers or polylactic acid fibers are selected as a non-woven elastic lining material, and hydrophilic groups are introduced to the surfaces of the fibers through a chemical grafting technology; 3, the modified non-woven elastic lining material is treated through low-temperature plasma; and step 4, wrapping the composite antibacterial agent, aloe gel and a chamomile extract in a nano-scale microcapsule by using a microcapsule technology. The nano-silver particles and the natural plant extract are prepared into the composite antibacterial agent, and the composite antibacterial agent is wrapped by a microcapsule technology, so that antibacterial components can be continuously released, and wounds are effectively prevented from being infected.

Description

Technical Field

[0001] The invention relates to the technical field of non-woven fabric processing, in particular to an antibacterial and anti-allergic processing method for a non-woven elastic lining medical bandage. Background Art

[0002] Non-woven elastic lining medical bandage is a material used for medical dressing. It is manufactured using non-woven technology and has good breathability and softness, which can reduce skin discomfort. At the same time, because it contains elastic lining, it has a certain elasticity and can expand and contract with body movements. It can better fit body parts, has a good fixation effect, and helps blood circulation. It is widely used in medical scenarios such as wound dressing and fixation.

[0003] Traditional medical bandages have problems such as poor breathability and softness. Although they are antibacterial treated, the antibacterial bandages obtained by impregnation or coating with antibacterial coatings not only have poor breathability and softness, but also poor wear resistance and durability, and their safety is questionable. At the same time, some people are allergic to the bandage material, causing discomfort to patients. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides an antibacterial and anti-allergic treatment method for a non-woven elastic lining medical bandage, which solves the problem of poor antibacterial effect of the existing non-woven elastic lining medical bandage.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A method for antibacterial and anti-allergic treatment of a non-woven elastic lining medical bandage, comprising the following steps:

[0006] Step 1: Prepare a composite antibacterial agent by mixing nanosilver particles with at least one natural plant extract selected from tea tree essential oil and coptis root extract in a mass ratio of 1:3.

[0007] Step 2: Select modified polyester fiber or polylactic acid fiber as the non-woven elastic lining material, and introduce hydrophilic groups on the fiber surface through chemical grafting technology;

[0008] Step 3: treating the modified non-woven elastic lining material with low-temperature plasma;

[0009] Step 4: Using microencapsulation technology, the composite antibacterial agent, aloe vera gel, and chamomile extract are encapsulated in nanoscale microcapsules, the microcapsule wall material is chitosan-gelatin, and the content of the microcapsules in the bandage fiber is 2%-4%;

[0010] Step 5: Making the fiber containing the microcapsules into a non-woven elastic lining medical bandage;

[0011] Step 6: sterilize the prepared medical bandage using ethylene oxide sterilization.

[0012] Preferably, the particle size of the nanosilver particles is 10 nm-20 nm.

[0013] Preferably, the linear density of the polyester fiber or polylactic acid fiber is 1.5dtex-2.5dtex, the chemical grafting reaction is carried out at a temperature of 50°C-60°C, a time of 2h-3h, and a catalyst dosage of 3%-5% of the fiber mass. The solvent in the reaction system is deionized water, and the mass ratio of the solvent to the fiber is 10:1-15:1.

[0014] Preferably, the processing power of the low-temperature plasma treatment is 80W-100W, the processing time is 30s-40s, the processing gas is argon, and the gas pressure in the equipment cavity is maintained at 0.5Pa-1.5Pa during the treatment process.

[0015] Preferably, the microcapsules are prepared by an emulsion-crosslinking method, Tween-80 is selected as the emulsifier, the amount of the emulsifier is 1%-3% of the total mass of the wall material, and the mass ratio of the chitosan to gelatin is 2:1-3:1.

[0016] Preferably, the fiber containing microcapsules is made into a 30 g / m2 fiber by a process combining needle punching and spunbonding. 2 -50g / m 2 Non-woven elastic lining medical bandage, the needle density is 80 needles / cm 2 -120 thorns / cm 2 .

[0017] Preferably, after mixing in step 1, stirring is carried out for 30 min to 45 min at a temperature of 30° C. to 40° C. and a stirring speed of 200 r / min to 300 r / min, and then ultrasonic dispersion is carried out with an ultrasonic frequency of 40 kHz to 50 kHz and an ultrasonic time of 15 min to 20 min.

[0018] Preferably, the sterilization temperature in step six is ​​37° C.-63° C., the sterilization time is 12 h-48 h, and after sterilization, the solution is analyzed at a temperature of 40° C.-60° C., and the analysis time is 48 h-96 h.

[0019] The present invention provides a method for antibacterial and anti-allergic treatment of non-woven elastic lining medical bandage.

[0020] Beneficial effects:

[0021] 1. The present invention combines nanosilver particles with natural plant extracts to form a composite antibacterial agent, and encapsulates it through microencapsulation technology to enable sustained release of the antibacterial components. It has a high antibacterial rate against common bacteria such as Staphylococcus aureus and Escherichia coli. Different embodiments can adjust the antibacterial durability according to variables, effectively protecting wounds from infection.

[0022] 2. The present invention selects modified fiber materials, introduces hydrophilic groups through chemical grafting, combines low-temperature plasma treatment, improves the surface properties of the fiber, and adds aloe vera gel and chamomile extract to reduce the allergic reaction between the bandage and the skin, greatly reducing the allergy rate and improving the comfort of use. DETAILED DESCRIPTION

[0023] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0024] Example 1:

[0025] The present invention provides an antibacterial and anti-allergic treatment method for a non-woven elastic lining medical bandage, comprising the following steps: Step 1: selecting 10nm nanosilver particles and tea tree essential oil, and mixing them in a mass ratio of 1:3. After mixing, stirring at a temperature of 30°C and a stirring speed of 200 rpm for 30 minutes, followed by ultrasonic dispersion at a frequency of 40 kHz for 15 minutes;

[0026] Step 2: Select polyester fiber with a linear density of 1.5 dtex, add 3% of the fiber weight of the catalyst in a deionized water system (solvent to fiber mass ratio of 10:1), and perform a chemical grafting reaction at 50°C for 2 hours to introduce hydrophilic groups on the fiber surface;

[0027] Step 3: Use a low-temperature plasma device with a power of 80W, use argon as the processing gas, and maintain the pressure in the device cavity at 0.5 Pa to treat the modified fiber for 30 seconds;

[0028] Step 4: Prepare microcapsules using an emulsion-crosslinking method, using chitosan and gelatin in a 2:1 mass ratio as the wall material and Tween-80 as the emulsifier, at a dosage of 1% of the total wall material mass. Encapsulate the composite antimicrobial agent, aloe vera gel, and chamomile extract within the nanocapsules, achieving a microcapsule content of 2% within the bandage fibers.

[0029] Step 5: The fiber containing microcapsules is processed by a combination of needle punching and spunbonding to form a 30g / m 2 Non-woven elastic lining medical bandage, the needle density is 80 needles / cm 2 ;

[0030] Step 6: Sterilize with ethylene oxide at 37°C for 12 hours. After sterilization, perform desorption at 40°C for 48 hours.

[0031] Example 2:

[0032] A method for antibacterial and anti-allergic treatment of a non-woven elastic lining medical bandage comprises the following steps:

[0033] Step 1: Select nanosilver particles with a particle size of 15 nm and coptis root extract and mix them in a mass ratio of 1:3. After mixing, stir at a temperature of 35°C and a stirring speed of 250 r / min for 38 minutes, and then ultrasonically disperse at an ultrasonic frequency of 45 kHz for 18 minutes.

[0034] Step 2: Select polylactic acid fiber with a linear density of 2.0 dtex, add 4% of the fiber weight of the catalyst in a deionized water system (solvent to fiber mass ratio of 12:1), and perform a chemical grafting reaction at 55°C for 2.5 hours to introduce hydrophilic groups on the fiber surface;

[0035] Step 3: Use a low-temperature plasma device with a power of 90W, use argon as the processing gas, and maintain the pressure in the device cavity at 1.0 Pa to treat the modified fiber for 35 seconds;

[0036] Step 4: Prepare microcapsules using an emulsion-crosslinking method, using chitosan and gelatin in a 2.5:1 mass ratio as the wall material and Tween-80 as the emulsifier, at 2% of the total wall material mass. Encapsulate the composite antimicrobial agent, aloe vera gel, and chamomile extract within the nanocapsules, achieving a microcapsule content of 3% within the bandage fibers.

[0037] Step 5: The fiber containing microcapsules is processed by a combination of needle punching and spunbonding to form a 40g / m 2 Non-woven elastic lining medical bandage with a needle density of 100 punctures / cm 2 ;

[0038] Step 6: Sterilize with ethylene oxide at 50°C for 30 hours. After sterilization, perform desorption at 50°C for 72 hours.

[0039] Example 2:

[0040] A method for antibacterial and anti-allergic treatment of a non-woven elastic lining medical bandage comprises the following steps:

[0041] Step 1: Select nanosilver particles with a particle size of 20 nm and mix them with a mixture of tea tree essential oil and coptis root extract (mass ratio of 1:1) at a mass ratio of 1:3. After mixing, stir at 40°C and 300 rpm for 45 minutes, followed by ultrasonic dispersion at 50 kHz for 20 minutes.

[0042] Step 2: Select polyester fiber with a linear density of 2.5 dtex, add 5% of the fiber weight of the catalyst in a deionized water system (solvent to fiber mass ratio of 15:1), and perform a chemical grafting reaction at 60°C for 3 hours to introduce hydrophilic groups on the fiber surface;

[0043] Step 3: Use a low-temperature plasma device with a power of 80W, use argon as the processing gas, and maintain the pressure in the device cavity at 0.5 Pa to treat the modified fiber for 30 seconds;

[0044] Step 4: Prepare microcapsules using an emulsion-crosslinking method, using chitosan and gelatin in a 2:1 mass ratio as the wall material and Tween-80 as the emulsifier, at a dosage of 1% of the total wall material mass. Encapsulate the composite antimicrobial agent, aloe vera gel, and chamomile extract within the nanocapsules, achieving a microcapsule content of 2% within the bandage fibers.

[0045] Step 5: The fiber containing microcapsules is processed by a combination of needle punching and spunbonding to form a 30g / m 2 Non-woven elastic lining medical bandage, the needle density is 80 needles / cm 2 ;

[0046] Step 6: Sterilize with ethylene oxide at 37°C for 12 hours. After sterilization, perform desorption at 40°C for 48 hours.

[0047] The following is a table showing the differences in product performance on different performance indicators obtained under different embodiments.

[0048]

[0049] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A method for antibacterial and anti-allergic treatment of non-woven elastic lining medical bandages, characterized in that: The following steps are involved: Step 1: Prepare a composite antibacterial agent by mixing nanosilver particles with at least one natural plant extract selected from tea tree essential oil and coptis root extract in a mass ratio of 1:

3. Step 2: Select modified polyester fiber or polylactic acid fiber as the non-woven elastic lining material, and introduce hydrophilic groups on the fiber surface through chemical grafting technology; Step 3: treating the modified non-woven elastic lining material with low-temperature plasma; Step 4: Using microencapsulation technology, the composite antibacterial agent, aloe vera gel, and chamomile extract are encapsulated in nanoscale microcapsules, the microcapsule wall material is chitosan-gelatin, and the content of the microcapsules in the bandage fiber is 2%-4%; Step 5: Making the fiber containing the microcapsules into a non-woven elastic lining medical bandage; Step 6: sterilize the prepared medical bandage using ethylene oxide sterilization.

2. The antibacterial and anti-allergic treatment method for a non-woven elastic lining medical bandage according to claim 1, characterized in that: The particle size of the nano silver particles is 10nm-20nm.

3. The antibacterial and anti-allergic treatment method for a non-woven elastic lining medical bandage according to claim 1, characterized in that: The linear density of the polyester fiber or polylactic acid fiber is 1.5dtex-2.5dtex, the chemical grafting reaction is carried out at a temperature of 50°C-60°C, a time of 2h-3h, and a catalyst dosage of 3%-5% of the fiber mass. The solvent in the reaction system is deionized water, and the mass ratio of the solvent to the fiber is 10:1-15:

1.

4. The antibacterial and anti-allergic treatment method for a non-woven elastic lining medical bandage according to claim 1, characterized in that: The processing power of the low-temperature plasma treatment is 80W-100W, the processing time is 30s-40s, the processing gas is argon, and the gas pressure in the equipment cavity is maintained at 0.5Pa-1.5Pa during the treatment process.

5. The antibacterial and anti-allergic treatment method for a non-woven elastic lining medical bandage according to claim 1, characterized in that: The microcapsules are prepared by an emulsion-crosslinking method, Tween-80 is selected as an emulsifier, the amount of the emulsifier is 1%-3% of the total mass of the wall material, and the mass ratio of the chitosan to gelatin is 2:1-3:

1.

6. The antibacterial and anti-allergic treatment method for a non-woven elastic lining medical bandage according to claim 1, characterized in that: The fiber containing microcapsules is made into a 30g / m2 fiber by combining needle punching and spunbonding. 2 -50g / m 2 Non-woven elastic lining medical bandage with a needle density of 80 needles / cm 2 -120 thorns / cm 2 .

7. The antibacterial and anti-allergic treatment method for a non-woven elastic lining medical bandage according to claim 1, characterized in that: After mixing in step 1, stirring is performed for 30 min to 45 min at a temperature of 30° C. to 40° C. and a stirring speed of 200 r / min to 300 r / min, and then ultrasonic dispersion is performed with an ultrasonic frequency of 40 kHz to 50 kHz and an ultrasonic time of 15 min to 20 min.

8. The antibacterial and anti-allergic treatment method for a non-woven elastic lining medical bandage according to claim 1, characterized in that: The sterilization temperature in step six is ​​37° C.-63° C., and the sterilization time is 12 h-48 h. After sterilization, the solution is analyzed at a temperature of 40° C.-60° C. and a analysis time of 48 h-96 h.

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