CN113355913A - Antibacterial non-woven fabric and preparation process and application thereof - Google Patents
Antibacterial non-woven fabric and preparation process and application thereof Download PDFInfo
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- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
- D01F1/103—Agents inhibiting growth of microorganisms
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- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
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- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
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- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/184—Carboxylic acids; Anhydrides, halides or salts thereof
- D06M13/207—Substituted carboxylic acids, e.g. by hydroxy or keto groups; Anhydrides, halides or salts thereof
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- D06M2101/04—Vegetal fibres
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- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/18—Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/20—Polyalkenes, polymers or copolymers of compounds with alkenyl groups bonded to aromatic groups
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Abstract
The invention relates to an antibacterial non-woven fabric, which is characterized in that antibacterial resin granules with certain effective antibacterial component concentration are prepared from composite nano platinum antibacterial master batches and resin according to a certain mixing ratio, the antibacterial resin granules are melt-blown to form cooling wires, and a pre-prepared composite nano platinum antibacterial finishing liquid is sprayed on the cooling wires and is formed by hot rolling. According to the antibacterial non-woven fabric, a large amount of researches are carried out on the preparation process, and proper raw materials are selected to prepare the non-woven fabric with a broad-spectrum antibacterial function, and the material has antibacterial and bactericidal capabilities and can be well used for medical articles such as nursing pad towels, surgical gowns, surgical drape and protective clothing; wide antibacterial spectrum, durable antibacterial performance, safety and reliability, and meets the antibacterial requirements of hospitals and families.
Description
Technical Field
The invention relates to the technical field of antibacterial non-woven fabrics, in particular to an antibacterial non-woven fabric and a preparation process and application thereof.
Background
The non-woven fabric is directly made of directional or random arranged short fiber or filament fiber through friction, cohesion or adhesion or the combination of the methods.
The non-woven fabric has the characteristics of moisture resistance, air permeability, flexibility, light weight, no combustion supporting, easy decomposition, no toxicity or irritation, rich color, low price, recycling and the like. If the non-woven fabric is placed outdoors for natural decomposition, the longest service life of the non-woven fabric is only 90 days, the non-woven fabric is placed indoors for decomposition within 5 years, and the non-woven fabric is nontoxic and tasteless and has no any remaining substances during combustion, so that the environment is not polluted.
Therefore, the non-woven fabric product is internationally recognized as an environment-friendly product for protecting the earth ecology, and has the advantages of wide application, economy, rich color, brightness, fashion, environmental protection, elegant appearance, various patterns and styles, light weight, environmental protection and recycling. The product is widely applicable to industries such as agricultural films, shoemaking, leather making, mattresses, decoration, chemical engineering, printing, automobiles, building materials, furniture and the like, and a plurality of industries such as clothing lining cloth and the like.
The preparation raw materials of the non-woven fabric, such as polyester, polyamide, polypropylene and the like, belong to chemically inert substances, have the characteristics of chemical agent resistance, bacteriostasis, acid and alkali corrosion resistance, have hydrophobicity, are not mildewed, and can isolate the corrosion of bacteria and insects in liquid, so in the aspect of medical treatment and health, the non-woven fabric is always the first choice material for household infant paper diapers, masks, dust covers, sanitary underpants, wet face towels, nursing pads for hospitals, surgical gowns, surgical drapes and the like.
However, no antibacterial non-woven fabric is available on the market at present.
Disclosure of Invention
The invention aims to provide an antibacterial non-woven fabric and a preparation method and application thereof.
The invention realizes the purpose through the following technical scheme: an antibacterial non-woven fabric is prepared by preparing antibacterial resin granules with certain effective antibacterial component concentration from composite nano platinum antibacterial master batch and resin according to a certain mixing ratio, carrying out melt-blowing on the antibacterial resin granules to form cooling wires, spraying a pre-prepared composite nano platinum antibacterial finishing liquid on the cooling wires, and carrying out hot rolling forming;
the granular material of the composite nano platinum antibacterial master batch is prepared by the following method: adding 5-15 parts by weight of nano platinum antibacterial chelate, 0.2-0.5 part by weight of dispersant, 0.3-0.7 part by weight of polyacrylamide, 0.1-0.4 part by weight of cross-linking agent, 0.1-0.5 part by weight of coupling agent and 1-6 parts by weight of acrylate emulsion into 70-85 parts by weight of resin and uniformly mixing to obtain the acrylic acid/acrylic acid copolymer emulsion;
the antibacterial resin granules are prepared by the following method: adding 0.05-0.4 part by weight of composite nano platinum antibacterial master batch, 0.2-0.5 part by weight of dispersing agent, 0.3-0.7 part by weight of polyacrylamide, 0.1-0.4 part by weight of cross-linking agent, 0.1-0.5 part by weight of coupling agent and 1-6 parts by weight of acrylate emulsion into 88-98 parts by weight of resin and uniformly mixing to obtain the product;
the antibacterial finishing liquid is prepared by the following method: adding 0.05-0.4 part by weight of nano platinum antibacterial chelate, 0.2-0.5 part by weight of dispersant, 0.3-0.7 part by weight of citric acid, 0.1-0.4 part by weight of cross-linking agent, 0.1-0.5 part by weight of coupling agent and 1-6 parts by weight of tartaric acid solution into 80-95 parts by weight of water, and uniformly mixing.
Preferably, the dispersant is sodium dodecyl benzene sulfonate or sodium polyacrylate.
Preferably, the coupling agent is isocyanatopropyltriethoxysilane.
Preferably, the crosslinking agent is 1,2,3, 4-butanetetracarboxylic acid.
Preferably, the non-woven fabric is made of cotton, terylene, polypropylene, chinlon, spandex or acrylic.
A preparation process of an antibacterial non-woven fabric comprises the following steps:
preparing the composite nano platinum chelate and resin into antibacterial resin granules according to the proportion of 1 (1800 plus 2000), spraying the antibacterial resin granules from a spinneret plate through a precise metering pump under the melting condition of 150 plus 180 ℃ by using a screw extruder, rapidly cooling the melt-blown yarns on a net curtain under the pushing of cold air, spraying the composite nano platinum antibacterial finishing liquid with the concentration of 0.05ppm on the cooling yarns, and finally carrying out hot rolling molding through a rolling mill to obtain the antibacterial non-woven fabric.
The antibacterial non-woven fabric is applied to the preparation of protective clothing, surgical gowns, masks, pad towels and paper diapers.
Compared with the prior art, the antibacterial non-woven fabric and the preparation process thereof have the beneficial effects that: can improve the antibacterial and bactericidal performance of the membrane body, and has strong antibacterial ability and good antibacterial effect.
Drawings
FIG. 1 shows the results of the bactericidal performance test of four types of finished products in examples and comparative examples.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.
An antibacterial non-woven fabric is prepared through preparing antibacterial resin granules with high antibacterial component concentration from nano platinum chelate and resin according to a certain mixing ratio, extruding the granules from a spinneret plate by a screw extruder under the condition of melting at a proper temperature through an accurate metering pump, rapidly cooling melt-blown fibers under the action of cooling water, and finally cutting the melt-blown fibers into composite nano platinum antibacterial master batches by a granulator.
Then, the composite nano platinum antibacterial master batch and resin are prepared into antibacterial resin granules with certain effective antibacterial component concentration according to a certain mixing proportion, the antibacterial resin granules are sprayed out from a spinneret plate through a precise metering pump under the melting condition of a proper temperature through a screw extruder, the melt-blown yarns are rapidly cooled on a net curtain under the pushing of cold air, the pre-prepared composite nano platinum antibacterial finishing liquid is sprayed on the cooling yarns, and finally the composite nano platinum antibacterial finishing liquid is subjected to hot rolling forming through a rolling mill.
The granular material of the composite nano platinum antibacterial master batch is prepared by the following method: adding 5-15 parts by weight of nano platinum antibacterial chelate, 0.2-0.5 part by weight of dispersant, 0.3-0.7 part by weight of polyacrylamide, 0.1-0.4 part by weight of cross-linking agent, 0.1-0.5 part by weight of coupling agent and 1-6 parts by weight of acrylate emulsion into 70-85 parts by weight of resin, and uniformly mixing to obtain the acrylic acid ester emulsion.
The antibacterial resin granules are prepared by the following method: adding 0.05-0.4 part by weight of composite nano platinum antibacterial master batch, 0.2-0.5 part by weight of dispersing agent, 0.3-0.7 part by weight of polyacrylamide, 0.1-0.4 part by weight of cross-linking agent, 0.1-0.5 part by weight of coupling agent and 1-6 parts by weight of acrylate emulsion into 88-98 parts by weight of resin, and uniformly mixing to obtain the product.
The antibacterial finishing liquid is prepared by the following method: adding 0.05-0.4 part by weight of nano platinum antibacterial chelate, 0.2-0.5 part by weight of dispersant, 0.3-0.7 part by weight of citric acid, 0.1-0.4 part by weight of cross-linking agent, 0.1-0.5 part by weight of coupling agent and 1-6 parts by weight of tartaric acid solution into 80-95 parts by weight of water, and uniformly mixing.
The dispersant is sodium dodecyl benzene sulfonate or sodium polyacrylate.
The coupling agent is isocyanatopropyl triethoxysilane.
The cross-linking agent is 1,2,3, 4-butanetetracarboxylic acid.
The non-woven fabric is made of cotton, terylene, polypropylene, chinlon, spandex or acrylic.
The invention also provides a preparation method of the antibacterial non-woven fabric, which comprises the following steps: preparing the composite nano platinum chelate and resin into antibacterial resin granules according to the proportion of 1 (1800 plus 2000), spraying the antibacterial resin granules from a spinneret plate through a precise metering pump under the melting condition of 150 plus 180 ℃ by using a screw extruder, rapidly cooling the melt-blown yarns on a net curtain under the pushing of cold air, spraying the composite nano platinum antibacterial finishing liquid with the concentration of 0.05ppm on the cooling yarns, and finally carrying out hot rolling molding through a rolling mill to obtain the antibacterial non-woven fabric.
The invention also provides application of the antibacterial non-woven fabric in preparing nursing pad towels, operating gowns and surgical drape towels. The antibacterial non-woven fabric is processed according to a conventional process to obtain a conventional nursing pad towel, a conventional surgical gown and a conventional surgical drape.
Compared with the prior art, the invention has the following outstanding advantages and effects:
according to the antibacterial non-woven fabric, a large amount of researches are carried out on the preparation process, and proper raw materials are selected to prepare the non-woven fabric with a broad-spectrum antibacterial function, and the material has antibacterial and bactericidal capabilities and can be well used for medical articles such as nursing pad towels, surgical gowns, surgical drape and protective clothing; wide antibacterial spectrum, durable antibacterial performance, safety and reliability, and meets the antibacterial requirements of hospitals and families.
In the first embodiment, the first step is,
the granular material of the composite nano platinum antibacterial master batch is prepared by the following method: adding 5 parts by weight of nano platinum antibacterial chelate, 0.2 part by weight of dispersant, 0.3 part by weight of polyacrylamide, 0.1 part by weight of cross-linking agent, 0.1 part by weight of coupling agent and 1 part by weight of acrylate emulsion into 70 parts by weight of resin, and uniformly mixing to obtain the nano platinum antibacterial chelate. Then the mixture is sprayed out from a spinneret plate through a precise metering pump under the melting condition of the temperature of 150 ℃ through a screw extruder, the melt-blown fiber is rapidly cooled under the action of cooling water, and finally the melt-blown fiber is cut into the composite nano platinum antibacterial master batch through a granulator. To obtain the aggregate of the composite nano platinum antibacterial master batch.
The antibacterial resin granules are prepared by the following method: adding 0.05 weight part of composite nano platinum antibacterial master batch, 0.2 weight part of dispersing agent, 0.3 weight part of polyacrylamide, 0.1 weight part of cross-linking agent, 0.1 weight part of coupling agent and 1 weight part of acrylate emulsion into 88 weight parts of resin, and uniformly mixing to obtain the granular material of the antibacterial resin for producing the non-woven fabric. Then the melt-blown yarns are sprayed out from a spinneret plate through a precise metering pump under the melting condition of the temperature of 150 ℃ by a screw extruder, and the melt-blown yarns are rapidly cooled on a net curtain in the pushing of cold air. Spraying the prepared composite nano platinum antibacterial finishing liquid on a cooling wire, and finally hot rolling and forming by a rolling mill.
The antibacterial finishing liquid is prepared by the following method: adding 0.05 part by weight of nano platinum antibacterial chelate, 0.2 part by weight of dispersant, 0.3 part by weight of citric acid, 0.1 part by weight of cross-linking agent, 0.1 part by weight of coupling agent and 1 part by weight of tartaric acid solution into 80 parts by weight of water, and uniformly mixing.
Example two
The granular material of the composite nano platinum antibacterial master batch is prepared by the following method: adding 15 parts by weight of nano platinum antibacterial chelate, 0.5 part by weight of dispersant, 0.7 part by weight of polyacrylamide, 0.4 part by weight of cross-linking agent, 0.5 part by weight of coupling agent and 6 parts by weight of acrylate emulsion into 85 parts by weight of resin, and uniformly mixing to obtain the nano platinum antibacterial chelate. And then the mixture is sprayed out of a spinneret plate through a precise metering pump under the melting condition of the temperature of 180 ℃ through a screw extruder, the melt-blown fiber is rapidly cooled under the action of cooling water, and finally the melt-blown fiber is cut into the composite nano platinum antibacterial master batch through a granulator. To obtain the aggregate of the composite nano platinum antibacterial master batch.
The antibacterial resin granules are prepared by the following method: adding 0.4 weight part of composite nano platinum antibacterial master batch, 0.5 weight part of dispersing agent, 0.7 weight part of polyacrylamide, 0.4 weight part of cross-linking agent, 0.5 weight part of coupling agent and 6 weight parts of acrylate emulsion into 98 weight parts of resin, and uniformly mixing to obtain the granular material of the antibacterial resin for producing the non-woven fabric. Then the melt-blown yarns are sprayed out from a spinneret plate through a precise metering pump under the melting condition of 180 ℃ by a screw extruder, and the melt-blown yarns are rapidly cooled on a net curtain under the pushing of cold air. Spraying the prepared composite nano platinum antibacterial finishing liquid on a cooling wire, and finally hot rolling and forming by a rolling mill.
The antibacterial finishing liquid is prepared by the following method: adding 0.4 part by weight of nano platinum antibacterial chelate, 0.5 part by weight of dispersant, 0.7 part by weight of citric acid, 0.4 part by weight of cross-linking agent, 0.5 part by weight of coupling agent and 6 parts by weight of tartaric acid solution into 95 parts by weight of water, and uniformly mixing.
EXAMPLE III
The granular material of the composite nano platinum antibacterial master batch is prepared by the following method: adding 10 parts by weight of nano platinum antibacterial chelate, 0.3 part by weight of dispersant, 0.5 part by weight of polyacrylamide, 0.2 part by weight of cross-linking agent, 0.3 part by weight of coupling agent and 3 parts by weight of acrylate emulsion into 77 parts by weight of resin, and uniformly mixing to obtain the nano platinum antibacterial chelate. And then the mixture is sprayed out of a spinneret plate through a precise metering pump under the melting condition of 165 ℃ through a screw extruder, the melt-blown fiber is rapidly cooled under the action of cooling water, and finally the melt-blown fiber is cut into the composite nano platinum antibacterial master batch through a granulator. To obtain the aggregate of the composite nano platinum antibacterial master batch.
The antibacterial resin granules are prepared by the following method: adding 0.2 part by weight of composite nano platinum antibacterial master batch, 0.3 part by weight of dispersing agent, 0.5 part by weight of polyacrylamide, 0.2 part by weight of cross-linking agent, 0.3 part by weight of coupling agent and 3 parts by weight of acrylate emulsion into 93 parts by weight of resin, and uniformly mixing to obtain the granular material of the antibacterial resin for producing the non-woven fabric. Then the melt-blown yarns are sprayed out from a spinneret plate through a precise metering pump under the melting condition of 165 ℃ through a screw extruder, and the melt-blown yarns are rapidly cooled on a net curtain under the pushing of cold air. Spraying the prepared composite nano platinum antibacterial finishing liquid on a cooling wire, and finally hot rolling and forming by a rolling mill.
The antibacterial finishing liquid is prepared by the following method: adding 0.2 part by weight of nano platinum antibacterial chelate, 0.3 part by weight of dispersant, 0.5 part by weight of citric acid, 0.2 part by weight of cross-linking agent, 0.3 part by weight of coupling agent and 3 parts by weight of tartaric acid solution into 87 parts by weight of water, and uniformly mixing.
In the embodiment, the sodium polyacrylate is food-grade sodium polyacrylate provided by tin-free Fengmen environmental protection science and technology development limited company.
In the examples, polyacrylamide was provided as a non-ionic Polyacrylamide (PAMN) with a molecular weight of >700 million for Shandongda chemical Co.
Examples dibutyltin dilaurate, CAS No.: 77-58-7.
Example 3-pentadecylphenol, CAS No.: 501-24-6.
Examples 1,2,3, 4-butanetetracarboxylic acid, CAS number: 1703-58-8.
Examples isopropyltriethoxysilane isocyanate, CAS No.: 24801-88-5.
Examples hydroxyethyl acrylate, CAS number: 818-61-1.
And (3) testing antibacterial performance: refer to the "Disinfection technical Specification" of the Ministry of health; GB15981 evaluation method and Standard for Disinfection and Sterilization Effect; AATCC 100-; in the second part of GB/T20944.2-2007 evaluation of antibacterial properties of textiles, an absorption method, a sterilization rate test is performed on the antibacterial non-woven fabric, and the strains: staphylococcus aureus ATCC 6538.
Test groups:
(1) sample group-hydrophilic non-woven fabric after antibiotic cloth auxiliary agent treatment;
(2) control-untreated cloth, blank control sample
The test conditions are as follows: challenge bacteria concentration: about 1x105CFU/mL, incubation temperature: 36 +/-1 ℃;
test strains: ATCC6538 staphylococcus aureus: representative of pyococcus;
bactericidal power test
(1) Preparation of test bacterial solution
The strain preserved by freezing is cultured for 18-24 hours at the temperature of 36 +/-1 ℃ in a culture medium. The bacterial liquid in the culture medium is inoculated into a fresh culture medium at 36 +/-1 ℃ and cultured for 18-24 hours. Collecting activated bacteria liquid, preparing test bacteria suspension with purified water, and the concentration is about 1x105CFU/mL, this was used as the test inoculum.
(2) And (3) cloth antibacterial comparison detection:
A) cutting the cloth to be measured into a circle with the diameter of about 4.8cm, piling 4 cloth pieces in a threaded wide-mouth bottle cap
B) Sterilizing the cloth to be tested at high temperature by steam, and cooling to room temperature;
C) inoculating 1mL of the bacterial liquid obtained in the step (1) onto a cloth piece to enable the inoculated liquid to be uniformly distributed, transferring the cloth piece into a wide-mouth bottle, screwing a cover to prevent volatilization, and acting for 24 hours;
D) 100mL of 0.3% Tween 80 neutralizer is added into the wide-mouth bottle, and the mixture is fully shaken for 1 minute to elute bacteria on the cloth piece.
E) Diluting the eluent to a proper gradient concentration, uniformly coating 0.1mL of the eluent in a culture medium, placing the culture medium in an incubator at 36 +/-1 ℃ for culturing for 48 hours, and observing the growth of bacterial colonies;
F) carrying out an antibacterial test on the blank cloth according to the steps A) to E);
(3) and recording the number of colonies, and calculating the antibacterial rate of the test cloth.
(4) Each group was tested in parallel 3 times.
The test results are shown in FIG. 1.
From the above experimental results, it can be known that: compared with the antibacterial non-woven fabric made of silver materials, the antibacterial film provided by the embodiment of the invention can improve the antibacterial and bactericidal performance of the film body, has strong antibacterial capability and good antibacterial effect, and is suitable for popularization and use.
According to the antibacterial non-woven fabric, a large amount of researches are carried out on the preparation process, and proper raw materials are selected to prepare the non-woven fabric with a broad-spectrum antibacterial function, and the material has antibacterial and bactericidal capabilities and can be well used for medical articles such as nursing pad towels, surgical gowns, surgical drape and protective clothing; wide antibacterial spectrum, durable antibacterial performance, safety and reliability, and meets the antibacterial requirements of hospitals and families.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. An antibacterial non-woven fabric, which is characterized in that: preparing the composite nano platinum antibacterial master batch and resin into antibacterial resin granules with certain effective antibacterial component concentration according to a certain mixing ratio, carrying out melt blowing on the antibacterial resin granules to form a cooling wire, spraying a pre-prepared composite nano platinum antibacterial finishing liquid on the cooling wire, and carrying out hot rolling forming;
the granular material of the composite nano platinum antibacterial master batch is prepared by the following method: adding 5-15 parts by weight of nano platinum antibacterial chelate, 0.2-0.5 part by weight of dispersant, 0.3-0.7 part by weight of polyacrylamide, 0.1-0.4 part by weight of cross-linking agent, 0.1-0.5 part by weight of coupling agent and 1-6 parts by weight of acrylate emulsion into 70-85 parts by weight of resin and uniformly mixing to obtain the acrylic acid/acrylic acid copolymer emulsion;
the antibacterial resin granules are prepared by the following method: adding 0.05-0.4 part by weight of composite nano platinum antibacterial master batch, 0.2-0.5 part by weight of dispersing agent, 0.3-0.7 part by weight of polyacrylamide, 0.1-0.4 part by weight of cross-linking agent, 0.1-0.5 part by weight of coupling agent and 1-6 parts by weight of acrylate emulsion into 88-98 parts by weight of resin and uniformly mixing to obtain the product;
the antibacterial finishing liquid is prepared by the following method: adding 0.05-0.4 part by weight of nano platinum antibacterial chelate, 0.2-0.5 part by weight of dispersant, 0.3-0.7 part by weight of citric acid, 0.1-0.4 part by weight of cross-linking agent, 0.1-0.5 part by weight of coupling agent and 1-6 parts by weight of tartaric acid solution into 80-95 parts by weight of water, and uniformly mixing.
2. The antibacterial nonwoven fabric according to claim 1, characterized in that: the dispersant is sodium dodecyl benzene sulfonate or sodium polyacrylate.
3. The antibacterial nonwoven fabric according to claim 1, characterized in that: the coupling agent is isocyanatopropyl triethoxysilane.
4. The antibacterial nonwoven fabric according to claim 1, characterized in that: the cross-linking agent is 1,2,3, 4-butanetetracarboxylic acid.
5. The antibacterial nonwoven fabric according to claim 1, characterized in that: the non-woven fabric is made of cotton, terylene, polypropylene, chinlon, spandex or acrylic.
6. A preparation process of an antibacterial non-woven fabric comprises the following steps:
preparing the composite nano platinum chelate and resin into antibacterial resin granules according to the proportion of 1 (1800 plus 2000), spraying the antibacterial resin granules from a spinneret plate through a precise metering pump under the melting condition of 150 plus 180 ℃ by using a screw extruder, rapidly cooling the melt-blown yarns on a net curtain under the pushing of cold air, spraying the composite nano platinum antibacterial finishing liquid with the concentration of 0.05ppm on the cooling yarns, and finally carrying out hot rolling molding through a rolling mill to obtain the antibacterial non-woven fabric.
7. Use of the antibacterial nonwoven fabric according to any one of claims 1 to 6 for the manufacture of protective clothing, surgical gowns, masks, pads, diapers.
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