CN1539531A - Sterilized antiviral respirator and preparation method - Google Patents
Sterilized antiviral respirator and preparation method Download PDFInfo
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- CN1539531A CN1539531A CNA031279775A CN03127977A CN1539531A CN 1539531 A CN1539531 A CN 1539531A CN A031279775 A CNA031279775 A CN A031279775A CN 03127977 A CN03127977 A CN 03127977A CN 1539531 A CN1539531 A CN 1539531A
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Abstract
An antibacterial and antiviral mask is composed of a dual-layer isolating fabric layer, an antibacterial sterilizing fabric layer, an antibacterial adsorptive fabric layer, a dual-layer isolating fabric layer, and a protecting fabric layer, which are arranged sequentially from inner to outer and sewed together. Its advantage is high effect.
Description
Technical field
The invention belongs to the mouth mask field, particularly a kind of sterilized antiviral mouth mask and preparation method thereof.
Background technology
A large amount of procreations of pollution, germ or other bacterium of empty G﹠W bring huge threat for people's health.Mouth mask is to be used for making the mankind to avoid a kind of safeguard measure easily of germ invasion and attack.It is for to one of respiratory tract setting " filtration barrier " that people wear masks, and inhaled air is played a role in filtering, and makes a large amount of dusts, bacterium, virus and the various harmful gases etc. that are being mingled with in the air can not enter human body.Because some germ is very indomitable, and mainly propagate by the spittle and close contact, thus do not have the killing pathogenic bacteria function or kill the bacterium ability when strong inadequately at mouth mask, can only be by increasing the safety that thickness improve mouth mask.Even like this, also not necessarily play thorough safe effect for some obstinate germ, and if wear blocked up mouth mask, can sensation feel oppressed very much, particularly wear for a long time, can make schneiderian membrance become fragile, lose original physiological function of nasal cavity, may cause other diseases on the contrary.In addition, because mouth mask directly contacts oral cavity, nasal cavity, so the health of mouth mask itself and security are particularly important.
Super two thin fabric, its surface has the function of super-hydrophobic and super oleophobic.This function can stop all kinds of water or oil component to infiltrate the opposite side of fabric, can prevent germ attached to fabric face, and can avoid offering condition and the chance that bacterium grows up and breeds.
Nano-TiO
2Photochemical catalyst has the function of kill bacteria, because its specific area is bigger, when running into bacterium, at first germ is adsorbed on its surface, and the cell of directtissima bacterium causes the organic matter degradation in the bacterial cell subsequently, with this kill bacteria, and makes it to decompose.Nano-TiO
2It is high and lasting that the photo-catalyst agent has antimicrobial efficiency, and good advantages such as security.Utilize natural daylight, normal temperature and pressure to get final product catalytic decomposition germ and pollutant, wide accommodation.
Studies show that TiO
2The photo-catalyst agent is to staphylococcus aureus, Escherichia coli, and bacillus subtilis and streptococcus mutans all have higher sterilizing rate, even cancer cell can be killed.Nano TiO 2 still has the good sterilization effect to different mould (as aspergillus flavus, aspergillus niger, Sai Shi aspergillus, Aspergillus terreus, aspergillus ustus, Chaetomium globosum, multi-trunk natalensis, Penicillium citrinum, Paecilomyces varioti, Trichoderma viride).
Inorganic antiseptic has contact-type, and spectrum is antibiotic, and lasting, water-fast, acid and alkali-resistance are harmless to the health, characteristics such as non-secondary pollution, are widely used at present.As its antibiotic mechanism of silver ion is that silver ion carries out haptoreaction, causes the total composition of microorganism to destroy or produce dysfunction.When the silver ion of trace arrives the microbial cell film, electronegative because of the latter, rely on Coulomb attraction, both are firmly adsorbed, and silver is from entering in the born of the same parents in the penetration cell wall, and reacts with sulfydryl, make protein coagulating, destroy the activity of cell synzyme, cell is lost the division growth ability and death.Silver ion can also destroy microorganisms electric transmission system, respiratory system and substance delivery system.
Active carbon is that a kind of outward appearance of being made by carbonaceous material is black, and the prosperity of internal void structure, specific area are big, a class microcrystalline carbon materials of high adsorption capacity.It is a kind of adsorbent commonly used, catalyst or catalyst carrier, is widely used in nearly all sector of the national economy and daily life.
Above-mentioned several functional materials are carried out organically combination, and be combined in fabric face or the fabric, be used to make mouth mask, make mouth mask have sterilized antiviral effect, this point of destination of the present invention just.
Summary of the invention
One of purpose of the present invention provides a kind of sterilized antiviral mouth mask, do not possess the airborne spittle, drop and fine particle are intercepted outside the surface of mouth mask to solve present mouth mask, intercepting mouth and nose secretion exosmoses, avoid secretion to transmit nuisance, and do not have sterilizing function or the unfavorable present situation of sterilizing function.
Two of purpose of the present invention provides a kind of preparation method of sterilized antiviral mouth mask.
Sterilized antiviral mouth mask of the present invention comprises super two thin barrier fabric layer successively from outside to inside, degerming sterilization tissue layer, absorption antibacterial fabric layer, super two thin barrier fabric layers and contact protection tissue layer etc.
The preparation method of sterilized antiviral mouth mask of the present invention comprises the following steps:
(1) the super two thin barrier fabric layers of preparation;
(2) preparation degerming sterilization tissue layer;
(3) preparation absorption antibacterial fabric layer;
(4) the super two thin barrier fabric layers of preparation;
(5) preparation contact protection tissue layer;
(6) above-mentioned five function fabric layers that prepare are folded from outside to inside successively fall to being stitched together after, sew up four angle bands again and promptly get mouth mask of the present invention.
Super two thin barrier fabric layers of the present invention: be made up of super two thin breathable fabrics more than one deck, it has the surface that does not get wet with oily dirt free.Make the surface of fabric have the preparation method such as number of patent application 01141502.9 disclosed method of super two thin functions, or obtain by additive method (as: commercially available).
Degerming sterilization tissue layer of the present invention: form by the above degerming sterilization of one deck tissue layer, every layer contains nano-titanium oxide and inorganic antiseptic, or containing the layers of breathable fabric of the compound and the inorganic antiseptic of nano-titanium oxide, the content of the compound of nano-titanium oxide or nano-titanium oxide is 4～30g/m in the fabric
2, the content of inorganic antiseptic is 0.05～2g/m
2
The making of degerming sterilization tissue layer of the present invention is to finish by following method.Can be with nano-titanium oxide and inorganic antiseptic, or the compound of nano-titanium oxide and inorganic antiseptic are made into certain density colloidal sol respectively, make textile impregnation earlier in containing inorganic antiseptic colloidal sol, do through roll extrusion, roars of laughter, and then be immersed in the compound colloidal sol of nano-titanium oxide or nano-titanium oxide, obtain after doing through roll extrusion, roars of laughter;
Or with nano-titanium oxide and inorganic antiseptic, or the compound of nano-titanium oxide and inorganic antiseptic be made into certain density colloidal sol respectively, and inorganic antiseptic colloidal sol is sprayed on the fabric, and be dried through fooling, and then the compound colloidal sol of spraying nano-titanium oxide or nano-titanium oxide, roars of laughter obtain after doing.
Absorption antibacterial fabric layer of the present invention: form every layer of three kinds of inorganic matter of compound that contains active carbon, inorganic antiseptic and nano-titanium oxide or nano-titanium oxide by absorption antiseptic tissue layer more than one deck; Or every layer contain active carbon and two kinds of inorganic matters of inorganic antiseptic; Or every layer of two kinds of inorganic matter of compound that contains active carbon and nano-titanium oxide or nano-titanium oxide, or every layer contain a kind of inorganic matter of active carbon, and its content is active carbon 25～35g/m
2, nano-titanium oxide or nano-titanium oxide compound 4～16g/m
2, inorganic antiseptic 0.05～1g/m
2
Absorption antibacterial fabric layer of the present invention is to finish by following method.Antiseptic is made into certain density solution or colloidal sol, the fabric (commercially available) that contains active carbon is impregnated in this solution or the colloidal sol, do through roll extrusion, roars of laughter, and then be immersed in the complex solution or colloidal sol of nano-titanium oxide or nano-titanium oxide, obtain after doing through roll extrusion, roars of laughter;
Or inorganic antiseptic is made into certain density solution or colloidal sol, and make the textile impregnation that contains active carbon then earlier in this solution or colloidal sol, obtain after doing through roll extrusion, roars of laughter;
The textile impregnation that maybe will contain active carbon obtains after doing through roll extrusion, roars of laughter in the complex solution or colloidal sol of nano-titanium oxide or nano-titanium oxide;
Or the direct fabric that contains active carbon that adopts;
Or antiseptic is made into certain density solution or colloidal sol, antiseptic is sprayed on contains on the activated carbon felt, and then the complex solution or the colloidal sol of spraying nano-titanium oxide or nano-titanium oxide, roars of laughter obtain after doing;
Or inorganic antiseptic is made into certain density solution or colloidal sol earlier, and be sprayed on then on the fabric that contains active carbon, obtain after doing through roll extrusion, roars of laughter;
Or the complex solution or the colloidal sol of nano-titanium oxide or nano-titanium oxide is sprayed on the fabric that contains active carbon, obtain after doing through roll extrusion, roars of laughter.
Inorganic antiseptic of the present invention comprises metal or metal ion, and described metal is silver, copper or zinc etc.The antibacterial ability of silver and ion thereof is best.
Inorganic antiseptic of the present invention is by methods such as physical absorptions, metal such as silver, copper, zinc or its metal ion is fixed on the fabric, and makes fabric obtain to have antibacterial ability.
The compound of nano-titanium oxide of the present invention comprises the compound of compound, titanium oxide and iron oxide of compound, titanium oxide and the zinc oxide of titanium oxide and silica, is doped with the titanium oxide of iron ion, is doped with the titanium oxide of nitrogen element etc.Titanium oxide wherein: the mol ratio of compound is 1～2.5: 1.
Described colloidal sol comprises titanium colloidal sol and/or Ludox, and its consumption is as the criterion for the compound that can make titanium oxide or titanium oxide at least and/or antiseptic stick on the fabric securely.
Contact protection tissue layer of the present invention: be made up of breathable fabric clean more than two layers, drawing admittedly down of restraint zone, this layer is close to skin, avoids air-flow prolonging skin surface from the side and enters mouth and nose.
Breathable fabric of the present invention comprises cotton gauze, nonwoven, fiber crops, wool, silk, synthetic cotton, terylene, polypropylene fibre, acrylic fibers, polyamide fibre, washs/cotton, hair/wash or hair/nitrile or the like.
Function such as sterilized antiviral mouth mask of the present invention has sterilization, antiviral, diseases prevention, purify air.Be particularly suitable for medical personnel, patients with infectious diseases, prevent the personnel of viral communication and contain the environment of a large amount of or strong virus bacterium.
Description of drawings
Fig. 1. each stacked order schematic diagram that falls of mouth mask of the present invention;
Fig. 2. mouth mask schematic diagram of the present invention.
Reference numeral
1. super two thin barrier fabric layer 2. degerming sterilization tissue layer 3. absorption antibacterial fabric layers
4. super two thin barrier fabric layer 5. contact protection tissue layer
6. 7. jiaos of band 8. mouth masks of suture
The specific embodiment
The invention will be further described below in conjunction with embodiment, and cited embodiment is not to be limited embodiment.
Embodiment 1
See also Fig. 1 and Fig. 2.Super two thin barrier fabric layer 4 that the super two thin barrier fabric layer 1 that one deck is commercially available, one deck degerming sterilization tissue layer 2, one deck absorption antibacterial fabric layer 3, one deck are commercially available and two-layer commercially available contact protection tissue layer 5 are folded successively from outside to inside and are dropped on together, and material is cotton gauze.Be cut into 18cm * 12cm rectangle, sew up with suture 6, then connect four angle bands 7, can obtain mouth mask 8 of the present invention four angle seams along 0.5cm in the limit.The mouth mask gas permeability of made is fine, within national standard.Antibacterial tests adopts Quine's method.Get one deck degerming sterilizing layer 2 and one deck absorption antibiotic layer 3, bacterium liquid is directly dripped on two-layer cotton yarn, cover, judge its bacteriostasis according to the bacteriostasis rate size with culture medium.The result is 100% to colibacillary killing rate behind 10min.
Described degerming sterilization tissue layer and absorption antibacterial fabric layer can prepare according to foregoing method, and wherein the content of the compound of nano-titanium oxide and zinc oxide is 4～30g/m in the degerming sterilization tissue layer
2, the content of silver is 0.05～2g/m
2The active carbon content of absorption antibacterial fabric layer is 25～35g/m
2, the content of nano-titanium oxide is 4～16g/m
2, the content of silver is 0.05～1g/m
2
Embodiment 2
See also Fig. 1 and Fig. 2.The commercially available super two thin barrier fabric layers 1 of one deck, two-layer degerming sterilization tissue layer 2, one deck absorption antibacterial fabric layer 3, the commercially available super two thin barrier fabric layers 4 of one deck and two-layer commercially available contact protection tissue layer 5 folded from outside to inside successively drop on together, material is nonwoven.Be cut into 18cm * 12cm rectangle, sew up with suture 6, then connect four angle bands 7, can obtain mouth mask 8 of the present invention four angle seams along 0.5cm in the limit.The mouth mask gas permeability of making is fine, within national standard.Antibacterial tests adopts Quine's method.Get two-layer degerming sterilizing layer 2 and one deck absorption antibiotic layer 3, bacterium liquid is directly dripped on three layers of nonwoven, cover, judge its bacteriostasis according to the bacteriostasis rate size with culture medium.The result is 100% to colibacillary killing rate behind 5min.
Described degerming sterilization tissue layer and absorption antibacterial fabric layer can prepare according to foregoing method, and wherein the compound content of titanium oxide and zinc oxide is 4～30g/m in the degerming sterilization tissue layer
2, nano-titanium oxide: the mol ratio of compound is 1: 1, the content of zinc is 0.05～2g/m
2The active carbon content of absorption antibacterial fabric layer is 25～35g/m
2, the content of nano-titanium oxide is 4～16g/m
2, the content of silver is 0.05～1g/m
2
Embodiment 3
See also Fig. 1 and Fig. 2.The commercially available super two thin barrier fabric layers 1 of one deck, one deck degerming sterilization tissue layer 2, one deck absorption antibacterial fabric layer 3, the commercially available super two thin barrier fabric layers 4 of one deck and two-layer commercially available contact protection tissue layer 5 folded from outside to inside successively drop on together; used material the 1st, 2,4 function fabric layers are woven dacron; 3 function fabric layers are nonwoven, and the 5th function fabric layer is a cotton gauze.Be cut into 18cm * 12cm rectangle, sew up with suture 6, then connect four angle bands 7, can obtain mouth mask 8 of the present invention four angle seams along 0.5cm in the limit.The mouth mask gas permeability of made is fine, within national standard.Antibacterial tests adopts Quine's method.Get one deck degerming sterilizing layer 2 and one deck absorption antibiotic layer 3, bacterium liquid is directly dripped on two-layer function fabric, cover, judge its bacteriostasis according to the bacteriostasis rate size with culture medium.The result is 100% to colibacillary killing rate behind 10min.
Described degerming sterilization tissue layer and absorption antibacterial fabric layer can prepare according to foregoing method, and wherein the compound content of titanium oxide and zinc oxide is 4～30g/m in the degerming sterilization tissue layer
2, nano-titanium oxide: the mol ratio of compound is 2: 1, the content of silver is 0.05～2g/m
2The active carbon content of absorption antibacterial fabric layer is 25～35g/m
2, the content of silver is 0.05～1g/m
2
Claims (10)
1. antiviral mouth mask of sterilization, it is characterized in that: described mouth mask is to comprise super two thin barrier fabric layer successively from outside to inside, the degerming tissue layer of sterilizing is adsorbed antibacterial fabric layer, super two thin barrier fabric layers and contact protection tissue layer.
2. mouth mask as claimed in claim 1, it is characterized in that: described degerming sterilization tissue layer is made up of the above degerming sterilization of one deck tissue layer, every layer contains nano-titanium oxide and inorganic antiseptic, or contains the layers of breathable fabric of the compound and the inorganic antiseptic of nano-titanium oxide; The content of the compound of nano-titanium oxide or nano-titanium oxide is 4～30g/m in the fabric
2, the content of inorganic antiseptic is 0.05～2g/m
2
3. mouth mask as claimed in claim 1 is characterized in that: described absorption antibacterial fabric layer is formed every layer of three kinds of inorganic matter of compound that contains active carbon, inorganic antiseptic and nano-titanium oxide or nano-titanium oxide by absorption antiseptic tissue layer more than one deck; Or every layer contain active carbon and two kinds of inorganic matters of inorganic antiseptic; Or every layer of two kinds of inorganic matter of compound that contains active carbon and nano-titanium oxide or nano-titanium oxide, or every layer contain a kind of inorganic matter of active carbon; Its content is active carbon 25～35g/m
2, nano-titanium oxide or nano-titanium oxide compound 4～16g/m
2, inorganic antiseptic 0.05～1g/m
2
4. as claim 2 or 3 described mouth masks, it is characterized in that: described inorganic antiseptic comprises metal or metal ion, and described metal is silver, copper or zinc.
5. as claim 2 or 3 described mouth masks, it is characterized in that: the compound of described nano-titanium oxide comprises the compound of compound, titanium oxide and iron oxide of compound, titanium oxide and the zinc oxide of titanium oxide and silica, be doped with the titanium oxide of iron ion, be doped with the titanium oxide of nitrogen element; Titanium oxide wherein: the mol ratio of compound is 1～2.5: 1.
6. as claim 1,2 or 3 described mouth masks, it is characterized in that: described fabric comprises cotton gauze, nonwoven, fiber crops, wool, silk, synthetic cotton, terylene, polypropylene fibre, acrylic fibers, polyamide fibre, washs/cotton, hair/wash or hair/nitrile.
7. preparation method as mouth mask as described in the claim 1～6, it is characterized in that: this method comprises the following steps:
(1) the super two thin barrier fabric layers of preparation;
(2) preparation degerming sterilization tissue layer;
(3) preparation absorption antibacterial fabric layer;
(4) the super two resistance fabric interlayers of dredging of preparation;
(5) preparation contact protection layer;
(6) above-mentioned five function fabric layers that prepare are folded from outside to inside successively fall to being stitched together after, sew up four angle bands again and promptly get the antiviral mouth mask of sterilizing.
8. method as claimed in claim 7, it is characterized in that: described degerming sterilization tissue layer is with nano-titanium oxide and inorganic antiseptic, or the compound of nano-titanium oxide and inorganic antiseptic are made into certain density colloidal sol respectively, make textile impregnation earlier in containing inorganic antiseptic colloidal sol, do through roll extrusion, roars of laughter, and then be immersed in the compound colloidal sol of nano-titanium oxide or nano-titanium oxide, obtain after doing through roll extrusion, roars of laughter;
Or with nano-titanium oxide and inorganic antiseptic, or the compound of nano-titanium oxide and inorganic antiseptic be made into certain density colloidal sol respectively, and inorganic antiseptic colloidal sol is sprayed on the fabric, and be dried through fooling, and then the compound colloidal sol of spraying nano-titanium oxide or nano-titanium oxide, roars of laughter obtain after doing;
Wherein: the content of the compound of nano-titanium oxide or nano-titanium oxide is 4～30g/m in the fabric
2, the content of inorganic antiseptic is 0.05～2g/m
2
9. as method as described in the claim 7, it is characterized in that: described absorption antibacterial fabric layer is that antiseptic is made into certain density solution or colloidal sol, make the textile impregnation that contains active carbon then earlier in this solution or colloidal sol, do through roll extrusion, roars of laughter, and then be immersed in the complex solution or colloidal sol of nano-titanium oxide or nano-titanium oxide, obtain after doing through roll extrusion, roars of laughter;
Or inorganic antiseptic is made into certain density solution or colloidal sol earlier, and make the textile impregnation that contains active carbon then earlier in this solution or colloidal sol, obtain after doing through roll extrusion, roars of laughter;
The textile impregnation that maybe will contain active carbon obtains after doing through roll extrusion, roars of laughter in the complex solution or colloidal sol of nano-titanium oxide or nano-titanium oxide;
Or the direct fabric that contains active carbon that adopts;
Or antiseptic is made into certain density solution or colloidal sol, antiseptic is sprayed on contains on the activated carbon felt, and then the complex solution or the colloidal sol of spraying nano-titanium oxide or nano-titanium oxide, roars of laughter obtain after doing;
Or inorganic antiseptic is made into certain density solution or colloidal sol, and be sprayed on then on the fabric that contains active carbon, obtain after doing through roll extrusion, roars of laughter;
Or the complex solution or the colloidal sol of nano-titanium oxide or nano-titanium oxide is sprayed on the fabric that contains active carbon, obtain after doing through roll extrusion, roars of laughter;
Wherein: every layer of compound that contains active carbon, inorganic antiseptic and nano-titanium oxide or nano-titanium oxide; Or every layer contain active carbon and inorganic antiseptic; Or every layer of compound that contains active carbon and nano-titanium oxide or nano-titanium oxide, or every layer contain active carbon, and its content is active carbon 25～35g/m
2, nano-titanium oxide or nano-titanium oxide compound 4～16g/m
2, inorganic antiseptic 0.05～1g/m
2
10. as method as described in claim 8 or 9, it is characterized in that: the compound of described nano-titanium oxide comprises the compound of compound, titanium oxide and iron oxide of compound, titanium oxide and the zinc oxide of titanium oxide and silica, be doped with the titanium oxide of iron ion, be doped with the titanium oxide of nitrogen element; Titanium oxide wherein: the mol ratio of compound is 1～2.5: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031279775A CN1302826C (en) | 2003-04-26 | 2003-04-26 | Sterilized antiviral respirator and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031279775A CN1302826C (en) | 2003-04-26 | 2003-04-26 | Sterilized antiviral respirator and preparation method |
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| Publication Number | Publication Date |
|---|---|
| CN1539531A true CN1539531A (en) | 2004-10-27 |
| CN1302826C CN1302826C (en) | 2007-03-07 |
Family
ID=34322116
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031279775A Expired - Fee Related CN1302826C (en) | 2003-04-26 | 2003-04-26 | Sterilized antiviral respirator and preparation method |
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| Country | Link |
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| CN (1) | CN1302826C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101558913A (en) * | 2008-02-26 | 2009-10-21 | Bha控股公司 | Respiratory mask with microporous membrane and active carbon |
| CN101589853B (en) * | 2009-06-22 | 2012-01-25 | 华南农业大学 | Blumea oil microcapsule antibacterial mask and preparation method thereof |
| CN109518455A (en) * | 2018-12-23 | 2019-03-26 | 上海师范大学 | A kind of load nano-sized carbon and the non-woven fabrics of titanium dioxide and preparation method thereof |
| CN109797442A (en) * | 2018-12-26 | 2019-05-24 | 嘉兴学院 | A kind of Multifunctional gauze mask and preparation method thereof |
| CN112516819A (en) * | 2020-11-19 | 2021-03-19 | 道纳(江苏)高新技术有限公司 | Polytetrafluoroethylene filtering membrane for filtering PM0.3 particulate matters and preparation method thereof |
| US20210316171A1 (en) * | 2020-04-09 | 2021-10-14 | Nanotek Instruments Group, Llc | Graphitic antiviral filtration element and filtration devices containing same |
| CN113840552A (en) * | 2020-03-24 | 2021-12-24 | 株式会社滋贺干洗与地球 | Method for manufacturing antiviral fiber product and antiviral mask manufactured by using same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1166832C (en) * | 2001-09-27 | 2004-09-15 | 中国科学院化学研究所 | Treatment method of fabric possessing ultra biphilic/ultra biphobic composite functions at same time |
-
2003
- 2003-04-26 CN CNB031279775A patent/CN1302826C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101558913A (en) * | 2008-02-26 | 2009-10-21 | Bha控股公司 | Respiratory mask with microporous membrane and active carbon |
| CN101589853B (en) * | 2009-06-22 | 2012-01-25 | 华南农业大学 | Blumea oil microcapsule antibacterial mask and preparation method thereof |
| CN109518455A (en) * | 2018-12-23 | 2019-03-26 | 上海师范大学 | A kind of load nano-sized carbon and the non-woven fabrics of titanium dioxide and preparation method thereof |
| CN109797442A (en) * | 2018-12-26 | 2019-05-24 | 嘉兴学院 | A kind of Multifunctional gauze mask and preparation method thereof |
| CN113840552A (en) * | 2020-03-24 | 2021-12-24 | 株式会社滋贺干洗与地球 | Method for manufacturing antiviral fiber product and antiviral mask manufactured by using same |
| US20210316171A1 (en) * | 2020-04-09 | 2021-10-14 | Nanotek Instruments Group, Llc | Graphitic antiviral filtration element and filtration devices containing same |
| CN112516819A (en) * | 2020-11-19 | 2021-03-19 | 道纳(江苏)高新技术有限公司 | Polytetrafluoroethylene filtering membrane for filtering PM0.3 particulate matters and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1302826C (en) | 2007-03-07 |
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Granted publication date: 20070307 Termination date: 20110426 |