CN112618168A - Nano-silver antibacterial sanitary towel and production method thereof - Google Patents
Nano-silver antibacterial sanitary towel and production method thereof Download PDFInfo
- Publication number
- CN112618168A CN112618168A CN202110049637.XA CN202110049637A CN112618168A CN 112618168 A CN112618168 A CN 112618168A CN 202110049637 A CN202110049637 A CN 202110049637A CN 112618168 A CN112618168 A CN 112618168A
- Authority
- CN
- China
- Prior art keywords
- nano
- antibacterial
- silver
- reaction kettle
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 92
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title claims abstract description 59
- 238000004519 manufacturing process Methods 0.000 title abstract description 12
- 239000010410 layer Substances 0.000 claims abstract description 71
- 239000007788 liquid Substances 0.000 claims abstract description 67
- 239000000463 material Substances 0.000 claims abstract description 47
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 39
- 239000002344 surface layer Substances 0.000 claims abstract description 35
- 238000010521 absorption reaction Methods 0.000 claims abstract description 29
- 229920001661 Chitosan Polymers 0.000 claims abstract description 13
- 238000002360 preparation method Methods 0.000 claims abstract description 13
- 238000013329 compounding Methods 0.000 claims abstract 4
- 238000006243 chemical reaction Methods 0.000 claims description 60
- 239000002994 raw material Substances 0.000 claims description 30
- 238000007598 dipping method Methods 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 239000000758 substrate Substances 0.000 claims description 19
- 238000001816 cooling Methods 0.000 claims description 18
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 16
- 238000001914 filtration Methods 0.000 claims description 16
- 230000000975 bioactive effect Effects 0.000 claims description 15
- 238000005520 cutting process Methods 0.000 claims description 15
- 238000007599 discharging Methods 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 15
- 108090000765 processed proteins & peptides Proteins 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 14
- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical compound OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 12
- 229920002125 Sokalan® Polymers 0.000 claims description 12
- 229940069521 aloe extract Drugs 0.000 claims description 12
- 229960001631 carbomer Drugs 0.000 claims description 12
- 229920000742 Cotton Polymers 0.000 claims description 11
- 239000006228 supernatant Substances 0.000 claims description 11
- 239000004831 Hot glue Substances 0.000 claims description 10
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims description 10
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims description 10
- 239000002270 dispersing agent Substances 0.000 claims description 10
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 10
- 239000000835 fiber Substances 0.000 claims description 9
- 239000004698 Polyethylene Substances 0.000 claims description 8
- 239000004744 fabric Substances 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 6
- 108010053775 Nisin Proteins 0.000 claims description 5
- NVNLLIYOARQCIX-MSHCCFNRSA-N Nisin Chemical group N1C(=O)[C@@H](CC(C)C)NC(=O)C(=C)NC(=O)[C@@H]([C@H](C)CC)NC(=O)[C@@H](NC(=O)C(=C/C)/NC(=O)[C@H](N)[C@H](C)CC)CSC[C@@H]1C(=O)N[C@@H]1C(=O)N2CCC[C@@H]2C(=O)NCC(=O)N[C@@H](C(=O)N[C@H](CCCCN)C(=O)N[C@@H]2C(NCC(=O)N[C@H](C)C(=O)N[C@H](CC(C)C)C(=O)N[C@H](CCSC)C(=O)NCC(=O)N[C@H](CS[C@@H]2C)C(=O)N[C@H](CC(N)=O)C(=O)N[C@H](CCSC)C(=O)N[C@H](CCCCN)C(=O)N[C@@H]2C(N[C@H](C)C(=O)N[C@@H]3C(=O)N[C@@H](C(N[C@H](CC=4NC=NC=4)C(=O)N[C@H](CS[C@@H]3C)C(=O)N[C@H](CO)C(=O)N[C@H]([C@H](C)CC)C(=O)N[C@H](CC=3NC=NC=3)C(=O)N[C@H](C(C)C)C(=O)NC(=C)C(=O)N[C@H](CCCCN)C(O)=O)=O)CS[C@@H]2C)=O)=O)CS[C@@H]1C NVNLLIYOARQCIX-MSHCCFNRSA-N 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims description 5
- 239000004309 nisin Substances 0.000 claims description 5
- 235000010297 nisin Nutrition 0.000 claims description 5
- 238000004806 packaging method and process Methods 0.000 claims description 5
- 239000002356 single layer Substances 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 4
- 239000001509 sodium citrate Substances 0.000 claims description 4
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 claims description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 3
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 3
- 241001330002 Bambuseae Species 0.000 claims description 3
- 229920002101 Chitin Polymers 0.000 claims description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 3
- 239000011425 bamboo Substances 0.000 claims description 3
- BJEPYKJPYRNKOW-UHFFFAOYSA-N malic acid Chemical compound OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 claims description 3
- 150000002500 ions Chemical class 0.000 claims description 2
- -1 polyethylene Polymers 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 208000015181 infectious disease Diseases 0.000 abstract description 3
- 230000003115 biocidal effect Effects 0.000 description 14
- 150000001875 compounds Chemical class 0.000 description 8
- 241000894006 Bacteria Species 0.000 description 6
- 239000003242 anti bacterial agent Substances 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- 239000004332 silver Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000009395 breeding Methods 0.000 description 3
- 230000001488 breeding effect Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
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- 230000007794 irritation Effects 0.000 description 2
- 230000002175 menstrual effect Effects 0.000 description 2
- 230000003821 menstrual periods Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 241000588724 Escherichia coli Species 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 238000013142 basic testing Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002538 fungal effect Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
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- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/84—Accessories, not otherwise provided for, for absorbent pads
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- A61F2013/8408—Additives, e.g. for odour, disinfectant or pH control with odour control
- A61F2013/8414—Additives, e.g. for odour, disinfectant or pH control with odour control with anti-microbic
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Abstract
The invention discloses a nano-silver antibacterial sanitary towel and a production method thereof, relating to the field of physiological sanitary products. A nano-silver antibacterial sanitary towel comprises a surface layer, an absorption layer and a bottom layer, wherein the absorption layer is formed by compounding non-woven fabrics, the bottom layer is formed by compounding a PE breathable film and non-woven fabrics, and the surface layer is composed of a base material and an antibacterial liquid. According to the nano-silver antibacterial sanitary towel and the preparation method thereof, the antibacterial liquid contains nano-silver and O-carboxymethyl chitosan, so that the nano-silver antibacterial sanitary towel has excellent antibacterial capability, the risk of female infection is reduced, and the physiological health and health of the female are guaranteed.
Description
Technical Field
The invention relates to the technical field of physiological sanitary products, in particular to a nano-silver antibacterial sanitary towel and a production method thereof.
Background
At present, part of sanitary towels on the market have poor antibacterial ability, bacteria are easy to breed in damp and hot environments in the sanitary towels, women have poor resistance in menstrual periods, physiological diseases are easy to cause and other problems, nano-silver is a material with strong antibacterial ability, part of the sanitary towels adopting nano-silver for antibiosis are on the market, and most of the sanitary towels are only coated with nano-silver materials on the surface layer, so that the actual antibacterial ability is limited, and the sanitary towels are easy to lose a large amount of nano-silver materials in the production process, so that the problems of reduction of the antibacterial ability and increase of the production cost are caused, and the sanitary towels are not beneficial to popularization and use.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the nano-silver antibacterial sanitary towel with strong antibacterial capability, high comfort level and high air permeability and the production method thereof.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides an antibiotic sanitary towel of nanometer silver, includes surface course, absorbed layer and bottom, the absorbed layer is that non-woven fabrics is compound to be formed, and the bottom is that PE ventilated membrane and non-woven fabrics are compound to be formed, and the surface course comprises substrate and antibiotic liquid, and antibiotic liquid is made including following weight ratio's raw materials: 55-75 parts of aloe extract, 36-46 parts of absolute ethyl alcohol, 28-38 parts of nano silver, 10-15 parts of O-carboxymethyl chitosan, 5-7 parts of dispersing agent, 3-5 parts of hydroxyethyl cellulose, 2.4-3.6 parts of bioactive peptide, 2.1-3.6 parts of carbomer and 1.5-2.5 parts of pH regulator.
Preferably, the non-woven fabric used in the absorption layer is any two of bamboo fiber spunlace fabric, chitin fiber spunlace fabric, superfine fiber spunlace fabric and ES hot air cotton.
Preferably, the particle size of the nano silver is 20 +/-5 nm, and the surface layer substrate is absorbent cotton.
Preferably, the bioactive peptide is nisin, and the pH regulator is any one of sodium citrate or DL-malic acid.
The method comprises the following steps: preparing an antibacterial liquid:
1) and high-pressure mixing: putting the nano silver, the O-carboxymethyl chitosan and the hydroxyethyl cellulose in corresponding parts into a high-pressure reaction kettle, pouring water which is 1.5-2 times of the sum of the parts of the raw materials into the high-pressure reaction kettle, controlling the pressure in the high-pressure reaction kettle to 0.21-0.25MPa, controlling the temperature in the high-pressure reaction kettle to 35-43 ℃, and mixing for 20-30min under high pressure.
2) And centrifugal filtration: taking out the raw materials after high-pressure mixing treatment from a high-pressure reaction kettle, putting the raw materials, the aloe extract, the dispersing agent and the bioactive peptide into a centrifugal machine together with corresponding parts after standing and cooling to normal temperature, controlling the rotating speed of the centrifugal machine to 1300-1700rpm, standing for 5min after centrifuging for 15min, and taking supernatant.
3) And liquid discharging: pouring anhydrous ethanol and water of which the parts are 2-3 times of the parts of the anhydrous ethanol and the water into a reaction kettle, controlling the reaction kettle to preheat the reaction kettle to 55 ℃, keeping the temperature constant, then putting the supernatant obtained in centrifugal filtration, carbomer and a pH regulator of which the parts are corresponding into the reaction kettle together, stirring the raw materials in the reaction kettle at the rotating speed of 210 plus 270rpm of a stirring part, heating and stirring for 15-30min to obtain the antibacterial liquid, discharging the antibacterial liquid from the reaction kettle, standing and cooling to the normal temperature for later use.
Step two, raw material preparation:
1) and cutting: and (3) pressing the non-woven fabric in the absorption layer, the non-woven fabric in the bottom layer and the base material in the surface layer by using a pressing machine, stacking the absorption layer, the bottom layer and the base material, and cutting the absorption layer, the bottom layer and the base material into a specified shape by using a cutting machine.
2) And dipping: putting the antibacterial liquid obtained in the step one into a dipping tank, preheating the antibacterial liquid to 40-50 ℃, putting the cut surface layer substrate into the dipping tank, dipping for 10min, taking the substrate out of the dipping tank, extruding the substrate on two sides, discharging the redundant antibacterial liquid in the substrate, draining and cooling the substrate in an aseptic chamber, and obtaining the surface layer after draining and cooling.
Step three, laminating and forming:
and (3) sequentially bonding the bottom layer, the absorption layer and the surface layer by using hot melt adhesive according to the sequence from bottom to top, coating the hot melt adhesive on the two groups of back wings of the bottom layer, attaching release paper with corresponding shapes, and folding and packaging the sanitary towel after being attached and formed to obtain the nano-silver antibacterial sanitary towel.
Preferably, the water used in the first step is deionized water from which impurities in the form of ions are removed.
Preferably, in the first step, the remaining turbid solution after centrifugal filtration needs to be retained, and is put into a high-pressure reaction kettle for use during the preparation of the antibacterial solution in the next round.
Preferably, the conventional thickness of the single layer of the double-layer non-woven fabric after being pressed and finished in the second step is 1.2-2.4mm, the conventional thickness of the non-woven fabric is 2.2-3.0mm, and the conventional thickness of the base material is 2.0-3.0 mm.
(III) advantageous effects
Compared with the prior art, the invention provides the nano-silver antibacterial sanitary towel and the production method thereof, and the nano-silver antibacterial sanitary towel has the following beneficial effects:
1. the nano-silver antibacterial sanitary towel adopts absorbent cotton as a base material on a surface layer which is in direct contact with skin, has excellent absorptivity, greatly improves the absorption and water locking capacity of the sanitary towel by matching with double-layer non-woven fabric adopted by an absorption layer, further reduces the possibility of side leakage, and has the characteristics of water resistance and air permeability by adopting a PE (polyethylene) breathable film and non-woven fabric as a bottom layer, so that the sanitary towel effectively improves the internal air circulation, prevents the breeding of bacteria in a muggy environment, and relieves the discomfort during use, wherein the antibacterial liquid added in the surface layer contains nano-silver and O-carboxymethyl chitosan, so that the nano-silver antibacterial sanitary towel has excellent antibacterial capacity, reduces the breeding degree of bacteria in absorbed menstrual blood, reduces the infection risk of women, provides guarantee for the physiological health of the women, and simultaneously uses aloe extract and absolute ethyl alcohol to modify the surface layer base material, the health care product has the characteristics of softness and no irritation, does not bring discomfort to human bodies after long-time use, reduces the burden of use during the physiological period of women and brings good use experience.
2. The preparation method of the nano-silver antibacterial sanitary towel adopts a dipping mode to attach the antibacterial liquid containing the nano-silver material to the surface layer to ensure that the antibacterial liquid can be fully absorbed in the nano-silver antibacterial sanitary towel, compared with the nano-silver antibacterial sanitary towel which is partially processed in a spraying mode, the integral antibacterial capability is improved, the quality of the sanitary towel is guaranteed, meanwhile, the surface layer which is fully filled with the antibacterial liquid after dipping is dried in an extruding mode, the loss of the antibacterial liquid is reduced, the utilization rate of the antibacterial liquid is improved, the production cost is further reduced, meanwhile, the antibacterial liquid is processed by using a centrifugal filtering method, the possibility of particle objects appearing in the antibacterial liquid is reduced, the fineness is improved, the uncomfortable feelings such as stabbing pain and the like to the skin of a user during use are avoided, the use experience is further improved, and the sanitary towel adopts a composite structural design as a whole, the processing steps are simple and convenient, and the used processing machines are common equipment, so that the processing method is suitable for mass production and processing and is beneficial to popularization and use.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
the utility model provides an antibiotic sanitary towel of nanometer silver, includes surface course, absorbed layer and bottom, and the absorbed layer is that the non-woven fabrics is compound to form, and the non-woven fabrics is bamboo fibre spunlace and ES hot-blast cotton, and the bottom is that PE ventilated membrane and non-woven fabrics are compound to form, and the surface course comprises substrate and antibiotic liquid, and the substrate is the cotton wool, and antibiotic liquid includes that the following weight ratio's raw materials make: 55 parts of aloe extract, 36 parts of absolute ethyl alcohol, 28 parts of nano-silver, 10 parts of O-carboxymethyl chitosan, 5 parts of a dispersing agent, 3 parts of hydroxyethyl cellulose, 2.4 parts of bioactive peptide, 2.1 parts of carbomer and 1.5 parts of a pH regulator, wherein the particle size of the nano-silver is 15 nm; the bioactive peptide is nisin, and the pH regulator is sodium citrate.
The method comprises the following steps: preparing an antibacterial liquid:
1) and high-pressure mixing: putting the nano silver, the O-carboxymethyl chitosan and the hydroxyethyl cellulose in corresponding parts into a high-pressure reaction kettle, pouring water with the weight 1.5 times of the sum of the parts of the raw materials into the high-pressure reaction kettle, controlling the pressure in the high-pressure reaction kettle to 0.21MPa, controlling the temperature in the high-pressure reaction kettle to 35 ℃, and mixing for 20min under high pressure; 2) and centrifugal filtration: taking out the raw materials subjected to high-pressure mixing treatment from a high-pressure reaction kettle, putting the raw materials, the aloe extract, the dispersing agent and the bioactive peptide into a centrifugal machine together with corresponding parts after standing and cooling to normal temperature, controlling the rotating speed of the centrifugal machine to 1300rpm, centrifuging for 15min, standing for 5min, taking supernatant, retaining the residual turbid liquid after centrifugal filtration, and putting the supernatant and the residual turbid liquid into the high-pressure reaction kettle for use during the preparation of the next round of antibacterial liquid; 3) and liquid discharging: pouring anhydrous ethanol with a corresponding part and water with a part 2 times that of the anhydrous ethanol into a reaction kettle, wherein the used water is deionized water from which impurities in an ionic form are removed, controlling the reaction kettle to preheat the reaction kettle, keeping the temperature constant when the temperature is preheated to 55 ℃, putting supernate obtained in centrifugal filtration, carbomer and a pH regulator with a corresponding part into the reaction kettle, stirring the raw materials in the reaction kettle, heating and stirring the mixture at the rotating speed of a stirring part of 210rpm for 15min to obtain the antibacterial liquid, discharging the antibacterial liquid from the reaction kettle, standing and cooling the antibacterial liquid to the normal temperature for later use.
Step two, raw material preparation:
1) and cutting: pressing the non-woven fabric in the absorption layer, the non-woven fabric in the bottom layer and the base material in the surface layer by using a pressing machine, wherein the conventional thickness of a single layer of the pressed double-layer non-woven fabric is 1.2mm, the conventional thickness of the non-woven fabric is 2.2mm, and the conventional thickness of the base material is 2.0mm, stacking and placing the absorption layer, the bottom layer and the base material, and cutting the absorption layer, the bottom layer and the base material into a specified shape by using a cutting machine; 2) and dipping: and (3) putting the antibacterial liquid obtained in the step one into a dipping pool, preheating the antibacterial liquid to 40 ℃, putting the cut surface layer substrate into the dipping pool, dipping for 10min, taking the substrate out of the dipping pool, carrying out double-sided extrusion on the substrate, discharging redundant antibacterial liquid in the substrate, conveying the substrate into a sterile room for draining and cooling, and draining and cooling to obtain the surface layer.
Step three, laminating and forming:
and (3) sequentially bonding the bottom layer, the absorption layer and the surface layer by using hot melt adhesive according to the sequence from bottom to top, coating the hot melt adhesive on the two groups of back wings of the bottom layer, attaching release paper with corresponding shapes, and folding and packaging the sanitary towel after being attached and formed to obtain the nano-silver antibacterial sanitary towel.
Example two:
the utility model provides an antibiotic sanitary towel of nanometer silver, includes surface course, absorbed layer and bottom, and the absorbed layer is that the non-woven fabrics is compound to form, and the non-woven fabrics is chitin fibre spunlace and ES hot-blast cotton, and the bottom is that PE ventilated membrane and non-woven fabrics are compound to form, and the surface course comprises substrate and antibiotic liquid, and the substrate is the cotton wool, and antibiotic liquid includes that the following weight ratio's raw materials make: 65 parts of aloe extract, 41 parts of absolute ethyl alcohol, 33 parts of nano-silver, 12.5 parts of O-carboxymethyl chitosan, 6 parts of dispersing agent, 4 parts of hydroxyethyl cellulose, 3 parts of bioactive peptide, 2.85 parts of carbomer and 2 parts of pH regulator, wherein the particle size of the nano-silver is 20 nm; the bioactive peptide is nisin, and the pH regulator is DL-malic acid.
The method comprises the following steps: preparing an antibacterial liquid:
1) and high-pressure mixing: putting the nano silver, the O-carboxymethyl chitosan and the hydroxyethyl cellulose in corresponding parts into a high-pressure reaction kettle, pouring water with the weight 1.75 times of the sum of the parts of the raw materials into the high-pressure reaction kettle, controlling the pressure in the high-pressure reaction kettle to 0.23MPa, controlling the temperature in the high-pressure reaction kettle to 39 ℃, and mixing for 25min under high pressure; 2) and centrifugal filtration: taking out the raw materials subjected to high-pressure mixing treatment from a high-pressure reaction kettle, putting the raw materials, the aloe extract, the dispersing agent and the bioactive peptide into a centrifugal machine together with corresponding parts after standing and cooling to normal temperature, controlling the rotating speed of the centrifugal machine to 1500rpm, centrifuging for 15min, standing for 5min, taking supernatant, retaining the residual turbid liquid after centrifugal filtration, and putting the supernatant and the residual turbid liquid into the high-pressure reaction kettle for use during the preparation of the next round of antibacterial liquid; 3) and liquid discharging: pouring anhydrous ethanol and water with the weight 2.5 times that of the anhydrous ethanol into a reaction kettle, wherein the used water is deionized water from which impurities in an ionic form are removed, controlling the reaction kettle to preheat the reaction kettle to 55 ℃, keeping the temperature constant, putting supernate obtained in centrifugal filtration, carbomer and a pH regulator with the weight corresponding to that of the carbomer into the reaction kettle, stirring the raw materials in the reaction kettle, setting the rotation speed of a stirring part to be 240rpm, heating and stirring for 22.5min to obtain the antibacterial liquid, discharging the antibacterial liquid from the reaction kettle, standing and cooling to the normal temperature for later use.
Step two, raw material preparation:
1) and cutting: pressing the non-woven fabric in the absorption layer, the non-woven fabric in the bottom layer and the base material in the surface layer by using a pressing machine, wherein the conventional thickness of a single layer of the pressed double-layer non-woven fabric is 1.8mm, the conventional thickness of the non-woven fabric is 2.6mm, and the conventional thickness of the base material is 2.5mm, stacking and placing the absorption layer, the bottom layer and the base material, and cutting the absorption layer, the bottom layer and the base material into a specified shape by using a cutting machine; 2) and dipping: and (3) putting the antibacterial liquid obtained in the step one into a dipping pool, preheating the antibacterial liquid to 45 ℃, putting the cut surface layer base material into the dipping pool, dipping for 10min, taking the base material out of the dipping pool, carrying out double-sided extrusion on the base material, discharging redundant antibacterial liquid in the base material, conveying the base material into a sterile room, draining, cooling, and draining to obtain the surface layer.
Step three, laminating and forming:
and (3) sequentially bonding the bottom layer, the absorption layer and the surface layer by using hot melt adhesive according to the sequence from bottom to top, coating the hot melt adhesive on the two groups of back wings of the bottom layer, attaching release paper with corresponding shapes, and folding and packaging the sanitary towel after being attached and formed to obtain the nano-silver antibacterial sanitary towel.
Example three:
the utility model provides an antibiotic sanitary towel of nanometer silver, includes surface course, absorbed layer and bottom, and the absorbed layer is that the non-woven fabrics is compound to form, and the non-woven fabrics is superfine fiber spunlace and ES hot-blast cotton, and the bottom is that PE ventilated membrane and non-woven fabrics are compound to form, and the surface course comprises substrate and antibiotic liquid, and the substrate is the cotton wool, and antibiotic liquid includes that following weight ratio's raw materials are made: 75 parts of aloe extract, 46 parts of absolute ethyl alcohol, 38 parts of nano-silver, 15 parts of O-carboxymethyl chitosan, 7 parts of a dispersing agent, 5 parts of hydroxyethyl cellulose, 3.6 parts of bioactive peptide, 3.6 parts of carbomer and 2.5 parts of a pH regulator, wherein the particle size of the nano-silver is 25 nm; the bioactive peptide is nisin, and the pH regulator is sodium citrate.
The method comprises the following steps: preparing an antibacterial liquid:
1) and high-pressure mixing: putting the nano silver, the O-carboxymethyl chitosan and the hydroxyethyl cellulose in corresponding parts into a high-pressure reaction kettle, pouring 2 times of water in the sum of the parts of the raw materials into the high-pressure reaction kettle, controlling the pressure in the high-pressure reaction kettle to 0.25MPa, controlling the temperature in the high-pressure reaction kettle to 43 ℃, and mixing for 30min under high pressure; 2) and centrifugal filtration: taking out the raw materials subjected to high-pressure mixing treatment from a high-pressure reaction kettle, putting the raw materials, the aloe extract, the dispersing agent and the bioactive peptide into a centrifugal machine together with corresponding parts after standing and cooling to normal temperature, controlling the rotating speed of the centrifugal machine to 1700rpm, centrifuging for 15min, standing for 5min, taking supernatant, retaining the residual turbid liquid after centrifugal filtration, and putting the supernatant and the residual turbid liquid into the high-pressure reaction kettle for use during the preparation of the next round of antibacterial liquid; 3) and liquid discharging: pouring the corresponding part of absolute ethyl alcohol and 3 times of water into a reaction kettle, wherein the used water is deionized water from which impurities in an ionic form are removed, controlling the reaction kettle to preheat the reaction kettle, keeping the temperature constant when the temperature is preheated to 55 ℃, putting the supernatant obtained in centrifugal filtration, the corresponding part of carbomer and a pH regulator into the reaction kettle, stirring the raw materials in the reaction kettle, heating and stirring the mixture for 30min at the rotating speed of 270rpm to obtain the antibacterial liquid, discharging the antibacterial liquid from the reaction kettle, standing and cooling the antibacterial liquid to the normal temperature for later use.
Step two, raw material preparation:
1) and cutting: pressing the non-woven fabric in the absorption layer, the non-woven fabric in the bottom layer and the base material in the surface layer by using a pressing machine, wherein the conventional thickness of a single layer of the pressed double-layer non-woven fabric is 2.4mm, the conventional thickness of the non-woven fabric is 3.0mm, and the conventional thickness of the base material is 3.0mm, stacking and placing the absorption layer, the bottom layer and the base material, and cutting the absorption layer, the bottom layer and the base material into a specified shape by using a cutting machine; 2) and dipping: and (3) putting the antibacterial liquid obtained in the step one into a dipping pool, preheating the antibacterial liquid to 50 ℃, putting the cut surface layer base material into the dipping pool, dipping for 10min, taking the base material out of the dipping pool, carrying out double-sided extrusion on the base material, discharging redundant antibacterial liquid in the base material, conveying the base material into a sterile room, draining, cooling, and draining to obtain the surface layer.
Step three, laminating and forming:
and (3) sequentially bonding the bottom layer, the absorption layer and the surface layer by using hot melt adhesive according to the sequence from bottom to top, coating the hot melt adhesive on the two groups of back wings of the bottom layer, attaching release paper with corresponding shapes, and folding and packaging the sanitary towel after being attached and formed to obtain the nano-silver antibacterial sanitary towel.
The samples obtained in examples 1 to 3 were subjected to the relevant performance tests in the following manner,
(1) and (3) detecting microorganisms: the initial contamination, total bacterial colony, Escherichia coli, pathogenic purulent bacteria and total fungal colony of the three groups of samples were tested according to GB 15979 standard.
(2) And basic test: the three groups of samples were tested for their infiltration, water absorption capacity and pH according to GB T8939-2008 standard.
At present, the part of sanitary towels on the market has poor antibacterial ability, bacteria are easy to breed in damp and hot environments in the sanitary towels, women have poor resistance in menstrual periods and are easy to cause physiological diseases, and the like, nano-silver is a material with strong antibacterial ability, antibacterial liquid added in a surface layer of the sanitary towels contains nano-silver and O-carboxymethyl chitosan, so that the sanitary towels have excellent antibacterial ability, the breeding degree of the bacteria in absorbed menstrual blood is reduced, the infection risk of the women is reduced, the physiological health of the women is guaranteed, meanwhile, aloe extract and absolute ethyl alcohol are used for modifying a surface layer base material, so that the sanitary towels have the characteristics of softness and no irritation, discomfort can not be brought to human bodies after long-time use, the burden of the women in the physiological period is reduced, good use experience is brought, and part of the sanitary towels adopting nano-silver for antibiosis are on the market, the sanitary towel mainly only sprays the nano-silver material on the surface layer, the actual antibacterial capacity is limited, and a large amount of nano-silver materials are easily lost in the production process of the sanitary towel, so that the problems of reduced antibacterial capacity and increased production cost are caused.
Claims (8)
1. A nano-silver antibacterial sanitary towel is characterized in that: the antibacterial fabric comprises a surface layer, an absorption layer and a bottom layer, wherein the absorption layer is formed by compounding non-woven fabrics, the bottom layer is formed by compounding a PE (polyethylene) breathable film and non-woven fabrics, the surface layer is composed of a base material and an antibacterial liquid, and the antibacterial liquid comprises the following raw materials in parts by weight: 55-75 parts of aloe extract, 36-46 parts of absolute ethyl alcohol, 28-38 parts of nano silver, 10-15 parts of O-carboxymethyl chitosan, 5-7 parts of dispersing agent, 3-5 parts of hydroxyethyl cellulose, 2.4-3.6 parts of bioactive peptide, 2.1-3.6 parts of carbomer and 1.5-2.5 parts of pH regulator.
2. The antibacterial sanitary napkin with nano-silver as claimed in claim 1, wherein: the non-woven fabric used by the absorption layer is any two of bamboo fiber spunlace fabric, chitin fiber spunlace fabric, superfine fiber spunlace fabric and ES hot-air cotton.
3. The antibacterial sanitary napkin with nano-silver as claimed in claim 1, wherein: the particle size of the nano silver is 20 +/-5 nm, and the surface layer substrate is absorbent cotton.
4. The antibacterial sanitary napkin with nano-silver as claimed in claim 1, wherein: the bioactive peptide is nisin, and the PH regulator is any one of sodium citrate or DL-malic acid.
5. A preparation method of a nano-silver antibacterial sanitary towel is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: preparing an antibacterial liquid:
1) and high-pressure mixing: putting the nano silver, the O-carboxymethyl chitosan and the hydroxyethyl cellulose in corresponding parts into a high-pressure reaction kettle, pouring water which is 1.5-2 times of the sum of the parts of the raw materials into the high-pressure reaction kettle, controlling the pressure in the high-pressure reaction kettle to 0.21-0.25MPa, controlling the temperature in the high-pressure reaction kettle to 35-43 ℃, and mixing for 20-30min under high pressure;
2) and centrifugal filtration: taking out the raw materials subjected to high-pressure mixing treatment from a high-pressure reaction kettle, putting the raw materials, the aloe extract, the dispersing agent and the bioactive peptide into a centrifugal machine together with corresponding parts after standing and cooling to normal temperature, controlling the rotating speed of the centrifugal machine to 1300-1700rpm, standing for 5min after centrifuging for 15min, and taking supernatant;
3) and liquid discharging: pouring anhydrous ethanol and water 2-3 times of the weight of the anhydrous ethanol into a reaction kettle, controlling the reaction kettle to preheat the reaction kettle to 55 ℃, keeping the temperature constant, then putting the supernatant obtained in centrifugal filtration, carbomer and a pH regulator into the reaction kettle together with the corresponding weight of the carbomer and the pH regulator, stirring the raw materials in the reaction kettle at the rotating speed of 210 plus 270rpm of a stirring part, heating and stirring for 15-30min to obtain the antibacterial liquid, discharging the antibacterial liquid from the reaction kettle, standing and cooling to normal temperature for later use;
step two, raw material preparation:
1) and cutting: pressing the non-woven fabric in the absorption layer, the non-woven fabric in the bottom layer and the base material in the surface layer by using a pressing machine, stacking the absorption layer, the bottom layer and the base material, and cutting the absorption layer, the bottom layer and the base material into a specified shape by using a cutting machine;
2) and dipping: putting the antibacterial liquid obtained in the step one into a dipping pool, preheating the antibacterial liquid to 40-50 ℃, putting the cut surface layer base material into the dipping pool, dipping for 10min, taking out the base material from the dipping pool, carrying out double-sided extrusion on the base material, discharging redundant antibacterial liquid in the base material, then sending the base material into a sterile room for draining and cooling, and draining and cooling to obtain the surface layer;
step three, laminating and forming:
and (3) sequentially bonding the bottom layer, the absorption layer and the surface layer by using hot melt adhesive according to the sequence from bottom to top, coating the hot melt adhesive on the two groups of back wings of the bottom layer, attaching release paper with corresponding shapes, and folding and packaging the sanitary towel after being attached and formed to obtain the nano-silver antibacterial sanitary towel.
6. The method for preparing a nano-silver antibacterial sanitary napkin according to claim 5, characterized in that: the water used in the first step is deionized water from which impurities in the form of ions are removed.
7. The method for preparing a nano-silver antibacterial sanitary napkin according to claim 6, characterized in that: in the first step, the remaining turbid solution after centrifugal filtration needs to be reserved, and the remaining turbid solution is put into a high-pressure reaction kettle for use during the preparation of the antibacterial solution in the next round.
8. The method for preparing a nano-silver antibacterial sanitary napkin according to claim 6, characterized in that: the conventional thickness of the single layer of the double-layer non-woven fabric pressed and integrated in the step two is 1.2-2.4mm, the conventional thickness of the non-woven fabric is 2.2-3.0mm, and the conventional thickness of the base material is 2.0-3.0 mm.
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| CN113289048A (en) * | 2021-05-24 | 2021-08-24 | 嫒赟（上海）生物科技股份有限公司 | Sanitary towel with antibacterial and health-care functions and preparation method thereof |
| CN113908324A (en) * | 2021-09-26 | 2022-01-11 | 杭州淑洁卫生用品有限公司 | Disposable hygienic product with antibacterial function |
| CN115554029A (en) * | 2022-11-07 | 2023-01-03 | 佛山市顺德区州福慈鑫无纺布有限公司 | Production process of coenzyme Q10 of sanitary towel |
| CN116492145A (en) * | 2023-04-28 | 2023-07-28 | 江苏宝姿实业有限公司 | Antibacterial and deodorizing sanitary towel and preparation process thereof |
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| CN113908324B (en) * | 2021-09-26 | 2022-05-17 | 杭州淑洁卫生用品有限公司 | Disposable hygienic product with antibacterial function |
| CN115554029A (en) * | 2022-11-07 | 2023-01-03 | 佛山市顺德区州福慈鑫无纺布有限公司 | Production process of coenzyme Q10 of sanitary towel |
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Application publication date: 20210409 |