CN203762328U - Three-dimensional mask capable of effectively filtering out PM2.5 - Google Patents
Three-dimensional mask capable of effectively filtering out PM2.5 Download PDFInfo
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- CN203762328U CN203762328U CN201420169452.8U CN201420169452U CN203762328U CN 203762328 U CN203762328 U CN 203762328U CN 201420169452 U CN201420169452 U CN 201420169452U CN 203762328 U CN203762328 U CN 203762328U
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- polypropylene
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- Expired - Lifetime
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- 238000001914 filtration Methods 0.000 title claims abstract description 10
- 239000004743 Polypropylene Substances 0.000 claims abstract description 63
- 229920001155 polypropylene Polymers 0.000 claims abstract description 63
- -1 polypropylene Polymers 0.000 claims abstract description 61
- 239000004744 fabric Substances 0.000 claims abstract description 42
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 24
- 239000000835 fiber Substances 0.000 claims abstract description 19
- 229920000742 Cotton Polymers 0.000 claims abstract description 8
- 150000001875 compounds Chemical class 0.000 claims description 23
- 238000005507 spraying Methods 0.000 claims description 17
- 230000008602 contraction Effects 0.000 claims description 13
- 206010049244 Ankyloglossia congenital Diseases 0.000 claims description 11
- 238000009941 weaving Methods 0.000 claims description 11
- 230000003115 biocidal effect Effects 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 239000002131 composite material Substances 0.000 abstract description 5
- 239000004753 textile Substances 0.000 abstract 3
- 239000010410 layer Substances 0.000 description 69
- 239000002245 particle Substances 0.000 description 6
- 230000035699 permeability Effects 0.000 description 5
- 241000612118 Samolus valerandi Species 0.000 description 3
- 238000010792 warming Methods 0.000 description 3
- 210000004072 lung Anatomy 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- IXSZQYVWNJNRAL-UHFFFAOYSA-N etoxazole Chemical compound CCOC1=CC(C(C)(C)C)=CC=C1C1N=C(C=2C(=CC=CC=2F)F)OC1 IXSZQYVWNJNRAL-UHFFFAOYSA-N 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000003434 inspiratory effect Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000009340 pathogen transmission Effects 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000009965 tatting Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Respiratory Apparatuses And Protective Means (AREA)
- Filtering Materials (AREA)
Abstract
The utility model relates to a mask, in particular to a three-dimensional mask capable of effectively filtering out PM2.5. The three-dimensional mask is composed of a mask sheet part (1), a nose pressing part (2) located above the mask sheet part (1), a shrinkage part (3) located below the mask sheet part (1) and tying belts (4), the mask sheet part (1), the nose pressing part (2) and the shrinkage part (3) are of two-layer or three-layer structures and are respectively composed of an outer layer and an inner layer which are formed by textile fabrics or are respectively composed of an outer layer formed by textile fabrics, a middle layer formed by warm-keeping cotton or filter lining and an inner layer formed by textile fabrics, a composite polypropylene fiber non-woven fabric three-dimensional filter disc (6) is arranged between the inner layer and the outer layer or between the inner layer and the middle layer, and at least one inserting opening (5) bringing convenience to filter sheet filling or replacing is formed in the inner layer. By means of the three-dimensional mask, the PM2.5 can be effectively filtered out, the mask is well attached to a user without moving, and the filtering effect is guaranteed.
Description
Technical field
The utility model relates to a kind of mouth mask, specifically, relates to a kind of three-dimensional mask that can effectively filter PM2.5.
Background technology
At present, being widely used of mouth mask, doctor, the nurse who not only serves at a hospital needs to use, in people's daily life for warming, stop pathogen transmission, prevent suck pollution air etc., also need to use, there is the market demand widely.
PM2.5 refers to that in atmosphere, diameter is less than or equal to the particle of 2.5 microns, also referred to as entering lung particle.Because it can not breathed into lung, people is known from experience and causes certain infringement.And a few days ago along with the announcement to PM2.5 monitoring result, people are increasingly sharpened to its fear.And for preventing that the most effective, while that PM2.5 is inhaled into from being also that the easiest method wears masks exactly, the fiber of mouth mask can play certain inhibition to inhalable particles.Mouth mask is in the market of a great variety, and existing structure complexity is expensive, and also have easily, and also there is no in the market a kind of three-dimensional mask that can effectively filter PM2.5,
Because people are to healthy more concern, in order to prevent air pollution, particularly Inhalable Particulate damages human body, a kind ofly can effectively filter PM2.5 and low price, uses comfortable mouth mask so need badly.
Summary of the invention
The utility model relates to a kind of three-dimensional mask that can effectively filter PM2.5.
In order to complete this novel object, the technical scheme of employing is:
A kind of three-dimensional mask that can effectively filter PM2.5, described mouth mask is by mouth mask sheet portion 1, be positioned at the pressure nose 2 of mouth mask sheet portion top, the contraction flow region 3 and the frenulum 4 that are positioned at mouth mask sheet subordinate side form, it is characterized in that, described mouth mask sheet portion, press nose and contraction flow region to comprise two layers or three-decker, be respectively the skin and the nexine that are formed by weaving face fabric, or the skin being formed by weaving face fabric, the intermediate layer being formed by insulation cotton or filtration lining and the nexine being formed by weaving face fabric, between ectonexine or between internal layer and intermediate layer, be provided with the three-dimensional filter disc 6 of compound nonwoven polypropylene fabric, and at internal layer, the socket 5 that at least one is convenient to filter disc filling or changes is set, described three-dimensional filter disc comprise one peripheral and the outer fixed part 7 of internal layer, skin and intermediate layer combination and one are positioned to filter disc body center and by the fixed part of internal layer, skin and intermediate layer combination around described body, described interior fixed part there is one section of interlude 8 and one section backward and the section of having a down dip 9 of extending to bottom side edge and/or one section backward and to the section of tilting 10 of top side edge extension, described interlude is straight or outwardly arc.
This first novel optimal technical scheme is: three-dimensional filter disc arc interlude forms continuous arc with the section of tilting, or described arc interlude and the section of having a down dip form continuous arc, or described arc interlude simultaneously with the continuous arc of of the section of tilting and the section of having a down dip formation.
This second novel optimal technical scheme is: described three-dimensional mask filter disc is symmetrical polygon by interior standing part, a described polygonal side is interior fixed part, and in polygon, the vertical height of fixed part offside is less than the vertical height of interior fixed part.
This 3rd novel optimal technical scheme is: being 50～120mm by interior fixed part to the distance of interior fixed part offside, is 80～130mm by interior fixed part top to the vertical range of bottom.
This 4th novel optimal technical scheme is: outer is antibiotic facing material layer.
This 5th novel optimal technical scheme is: socket is two, is symmetricly set in the left and right side of filter disc; The width of the three-dimensional filter disc of described compound nonwoven polypropylene fabric is more than or equal to the distance between two sockets of mouth mask sheet portion internal layer, and the area of three-dimensional filter disc is less than or equal to the area of three-dimensional mask internal layer.
This 6th novel optimal technical scheme is: compound nonwoven polypropylene fabric filter disc 6 is three-decker, be respectively polypropylene spunbond nonwoven skin, polypropylene fibre melt spraying non-woven fabrics intermediate layer and polypropylene spunbond or fabric hot rolled nonwoven fabrics internal layer, described polypropylene fibre melt spraying non-woven fabrics intermediate layer is that single or multiple lift is compound.
This 7th novel optimal technical scheme is: polypropylene spunbond or fabric hot rolled nonwoven fabrics internal layer and the outer field thickness of polypropylene spunbond nonwoven are respectively 0.1～0.8mm, and the thickness in polypropylene fibre melt spraying non-woven fabrics intermediate layer is 0.1～0.6mm.
This 8th novel optimal technical scheme is: polypropylene spunbond or fabric hot rolled nonwoven fabrics internal layer and the outer field grammes per square metre of polypropylene spunbond nonwoven are for being respectively 15～40g/m
2, the grammes per square metre in polypropylene fibre melt spraying non-woven fabrics intermediate layer is 15～60g/m
2.
Below the technical solution of the utility model is made further explanation:
A kind of three-dimensional mask that can effectively filter PM2.5, described mouth mask is by mouth mask sheet portion, be positioned at the pressure nose of mouth mask sheet portion top, be positioned at contraction flow region and the frenulum composition of mouth mask sheet subordinate side, described mouth mask sheet portion, press nose and contraction flow region to comprise two layers or three-decker, be respectively the skin and the nexine that are formed by weaving face fabric, or the skin being formed by weaving face fabric, the intermediate layer being formed by insulation cotton or filtration lining and the nexine being formed by weaving face fabric, between ectonexine or between internal layer and intermediate layer, be provided with the three-dimensional filter disc of compound nonwoven polypropylene fabric, and at internal layer, the socket that at least one is convenient to filter disc filling or changes is set.
Wherein, three-dimensional mask of the present invention is by pressing nose, sheet portion and contraction flow region to form a three-dimensional projective structure, the muffle portion that comprises people that can be good, and hung over after ear by frenulum, wherein frenulum can be selected various bungees, the fixture of an adjusting elasticity rope length also can be installed, with better fixing, easy to use.Also can select tatting, knitting by outer field fabric, plain color, stamp, cotton, polyester-cotton blend, Quan Di etc., and preferred antibiotic facing material.
In order conveniently to take, replace filter disc, preferably socket is two, is symmetricly set in the left and right side of filter disc.Thereby can be after socket be on one side put into, in the spigot adjustment of another side.
Comfortable in order to use, and make filter disc in interlayer, be difficult for being subjected to displacement, preferably the width of the three-dimensional filter disc of described compound nonwoven polypropylene fabric is more than or equal to the distance between two sockets of mouth mask sheet portion internal layer; Thereby make filter disc more comprehensively cover mouth mask internal layer, thereby ensure filter effect.
The compound nonwoven polypropylene fabric filter disc that the utility model adopts is three-layer composite structure, be respectively polypropylene spunbond nonwoven skin, polypropylene fibre melt spraying non-woven fabrics intermediate layer and polypropylene spunbond or fabric hot rolled nonwoven fabrics internal layer, polypropylene fibre melt spraying non-woven fabrics intermediate layer is that single or multiple lift is compound.Three-layer composite structure of the present utility model, can increase the filter effect of filter disc to pellet, and further preferably polypropylene spunbond nonwoven internal layer and the outer field grammes per square metre of polypropylene spunbond nonwoven for being respectively 30g/m
2, the grammes per square metre in polypropylene fibre melt spraying non-woven fabrics intermediate layer is 25g/m
2, total grammes per square metre is 85g/m
2; This is due to the compound nonwoven polypropylene fabric filter disc that adopts this thickness, in conjunction with other structures of three layers of mouth mask, make mouth mask there is good particle filtering efficiency, can reach NIOSH(American National employment security health research institute) effect of N95 type mouth mask, in to the testing process of PM2.5, this uses novel mouth mask to be not less than 95% to particle filtering efficiency, and can reach 99%.Mouth mask of the present utility model has good aeration, be in 85L/min situation at gas flow, the inspiratory resistance of mouth mask is 280～210Pa, comfort level when the ventilative degree of mouth mask has determined to wear, the poor mouth mask of gas permeability can be in mouth mask, water smoke is formed on surface, of long duration may multiply bacterium, and as poor in the gas permeability of mouth mask, a lot of weakly old men, child and patient, all should not wear, so in the particle filtering efficiency while that ensures mouth mask, ensure that gas permeability is only the key of product.Some expensive, baroque masks, face shield, its gas permeability is poor, is unsuitable for people and uses in daily life and wear.And also there is ventilative poor shortcoming in the medical yarn mouth mask of 12-16 layer.
The utility model passes through the optimization of filter course to select, thereby makes mouth mask of the present utility model have filter effect and gas permeability concurrently, is the good selection of people's daily life protection PM2.5.
The filter disc inside using in this novel mouth mask can also arrange shape, the different static line of lines, can increase the fixed effect between every layer of structure of filter disc on the one hand, also can make mouth mask filter disc more attractive in appearance, is rich in artistry.The outer stationary cloth of this novel three-dimensional mask filter disc can be all around filter disc body periphery, can be partly around, be for example compassingly set at upper edge and/or the lower edge of filter disc body.
The filter disc of this novel mouth mask, by the design to size, has designed the filter disc of different sizes, thereby can be that consumer need to select according to self to the crowd of all ages and classes level.And this novel mouth mask filter disc width increases, thereby has increased pretective acreage, has improved strainability and the slip of overall mouth mask.
Brief description of the drawings:
Fig. 1 is the schematic rear view of embodiment 1 mouth mask;
Fig. 2 is the stereogram of embodiment 1 mouth mask;
Fig. 3 is the stereogram of embodiment 1 mouth mask filter disc;
Fig. 4 is the side view of embodiment 1 mouth mask filter disc;
Fig. 5 is the side view of embodiment 2 mouth mask filter discs.
Detailed description of the invention of the present utility model only limits to further explain and illustrate content of the present utility model, is not construed as limiting.
Detailed description of the invention
Embodiment 1
The three-dimensional mask that can effectively filter PM2.5, its schematic rear view is as shown in Figure 1; Stereogram as shown in Figure 2.Formed by mouth mask sheet portion 1, the pressure nose 2, the contraction flow region 3 that is positioned at mouth mask sheet subordinate side and the frenulum 4 that are positioned at mouth mask sheet portion top.The mouth mask of the present embodiment is by pressing nose, sheet portion and contraction flow region to form a three-dimensional projective structure, the muffle portion that comprises people that can be good, and hung over after ear by frenulum, wherein frenulum can be selected various bungees.Mouth mask sheet portion, pressure nose and contraction flow region comprise three-decker, be respectively by the skin of polyester-cotton blend fabric, the warming layer being formed by insulation cotton and the nexine that formed by weaving face fabric, between internal layer and warming layer, be provided with the three-dimensional filter disc 6 of compound nonwoven polypropylene fabric, and at internal layer, two sockets 5 of being convenient to filter disc filling or changing are set, socket is symmetrically distributed in the left and right side of filter disc, the width of the three-dimensional filter disc of compound nonwoven polypropylene fabric is greater than the distance between two sockets of mouth mask sheet portion internal layer, and the area of three-dimensional filter disc is less than or equal to the area of three-dimensional mask internal layer.Compound nonwoven polypropylene fabric filter disc is three-layer composite structure, is respectively polypropylene spunbond nonwoven skin, the double-deck intermediate layer of polypropylene fibre melt spraying non-woven fabrics and polypropylene spunbond nonwoven internal layer.Polypropylene spunbond nonwoven internal layer and the outer field grammes per square metre of polypropylene spunbond nonwoven are for being respectively 30g/m
2, the grammes per square metre in polypropylene fibre melt spraying non-woven fabrics two-layer compound intermediate layer is 40g/m
2, total grammes per square metre is 100g/m
2; Polypropylene spunbond nonwoven internal layer and outer field thickness are 0.5mm, and the thickness in the double-deck intermediate layer of polypropylene fibre melt spraying non-woven fabrics is 0.3mm;
This solid filter disc comprise one peripheral and the outer fixed part 7 of internal layer, skin and intermediate layer combination and one are positioned to filter disc body center and by the fixed part of internal layer, skin and intermediate layer combination around described body; Described interior fixed part there is one section of interlude 8 and one section backward and the section of having a down dip 9 of extending to bottom side edge and one section backward and to the section of tilting 10 of top side edge extension, described interlude is straight.Three-dimensional mask filter disc is that symmetrical side is the polygon of interior fixed part by interior standing part, and the vertical height of the side that polygon is relative with interior fixed part is less than the vertical height of interior fixed part; Being 60mm by interior fixed part to the distance of interior fixed part offside, is 93mm by interior fixed part top to the vertical range of bottom.As shown in Figure 3, its schematic diagram as shown in Figure 4 for its schematic perspective view.
Embodiment 2
A kind of three-dimensional mask that can effectively filter PM2.5, formed by mouth mask sheet portion 1, the pressure nose 2, the contraction flow region 3 that is positioned at mouth mask sheet subordinate side and the frenulum 4 that are positioned at mouth mask sheet portion top, the mouth mask of the present embodiment is by pressing nose, sheet portion and contraction flow region to form a three-dimensional projective structure, the muffle portion that comprises people that can be good, and hung over after ear by frenulum, wherein frenulum can be selected various bungees, and the fixture of an adjusting elasticity rope length is installed.Mouth mask sheet portion, pressure nose and contraction flow region comprise three-decker: the skin of antibiotic facing material, the nexine that filters lining and be made up of weaving face fabric, between internal layer and filtration lining, be provided with the three-dimensional filter disc 6 of compound nonwoven polypropylene fabric, and at internal layer, two sockets 5 of being convenient to filter disc filling or changing are set, be symmetrically distributed in the left and right side of filter disc, the width of the three-dimensional filter disc of described compound nonwoven polypropylene fabric is greater than the distance between two sockets of mouth mask sheet portion internal layer, and the area of three-dimensional filter disc is less than or equal to the area of three-dimensional mask internal layer.Compound nonwoven polypropylene fabric filter disc is three-layer composite structure, is respectively polypropylene spunbond nonwoven skin, polypropylene fibre melt spraying non-woven fabrics intermediate layer and polypropylene spunbond nonwoven internal layer.Polypropylene spunbond nonwoven internal layer and the outer field grammes per square metre of polypropylene spunbond nonwoven are for being respectively 30g/m
2, the grammes per square metre in polypropylene fibre melt spraying non-woven fabrics intermediate layer is 25g/m
2, total grammes per square metre is 85g/m
2; Polypropylene spunbond nonwoven internal layer and outer field thickness are 0.5mm, and the thickness in polypropylene fibre melt spraying non-woven fabrics intermediate layer is 0.2mm.
Three-dimensional mask filter disc comprise one peripheral and the outer fixed part 7 of internal layer, skin and intermediate layer combination and one are positioned to filter disc body center and by the fixed part of internal layer, skin and intermediate layer combination around described body; Described interior fixed part has one section of outwardly arc interlude, and one section backward and the section of having a down dip of extending to bottom side edge and one section backward and the section of tilting of extending to top side edge, arc interlude simultaneously with the continuous arc 11 of of the section of tilting and the section of having a down dip formation; Described three-dimensional mask filter disc is symmetrical two polygons that side is interior fixed part by interior standing part, and the vertical height of the side that this polygon is relative with interior fixed part is less than the vertical height of interior fixed part; Be 99mm by interior fixed part to the distance of interior fixed part offside, the vertical range 110mm by interior fixed part top to bottom.Its side view as shown in Figure 5.
Claims (9)
1. one kind can effectively be filtered the three-dimensional mask of PM2.5, described mouth mask is by mouth mask sheet portion (1), be positioned at the pressure nose (2) of mouth mask sheet portion top, be positioned at contraction flow region (3) and frenulum (4) composition of mouth mask sheet subordinate side, it is characterized in that, described mouth mask sheet portion, press nose and contraction flow region to comprise two layers or three-decker, be respectively the skin and the nexine that are formed by weaving face fabric, or the skin being formed by weaving face fabric, the intermediate layer being formed by insulation cotton or filtration lining and the nexine being formed by weaving face fabric, between ectonexine or between internal layer and intermediate layer, be provided with the three-dimensional filter disc of compound nonwoven polypropylene fabric (6), and at internal layer, the socket (5) that at least one is convenient to filter disc filling or changes is set, the three-dimensional filter disc of described compound nonwoven polypropylene fabric comprise one peripheral and the outer fixed part (7) of internal layer, skin and intermediate layer combination and one are positioned to filter disc body center and by the fixed part of internal layer, skin and intermediate layer combination around described body, described interior fixed part there is one section of interlude (8) and one section backward and the section of having a down dip (9) of extending to bottom side edge and one section backward and to the section of tilting (10) of top side edge extension, described interlude is straight or outwardly arc.
2. the three-dimensional mask that can effectively filter PM2.5 according to claim 1, it is characterized in that, the described three-dimensional filter disc arc of compound nonwoven polypropylene fabric interlude forms continuous arc with the section of tilting, or described arc interlude and the section of having a down dip form continuous arc, or described arc interlude simultaneously with the continuous arc of of the section of tilting and the section of having a down dip formation.
3. the three-dimensional mask that can effectively filter PM2.5 according to claim 1, it is characterized in that, the three-dimensional filter disc of described compound nonwoven polypropylene fabric is symmetrical polygon by interior standing part, a described polygonal side is interior fixed part, and in polygon, the vertical height of fixed part offside is less than the vertical height of interior fixed part.
4. according to the three-dimensional mask that can effectively filter PM2.5 described in the arbitrary claim of claim 1～3, it is characterized in that, is 50～120mm by interior fixed part to the distance of interior fixed part offside, is 80～130mm by interior fixed part top to the vertical range of bottom.
5. three-dimensional mask according to claim 1, is characterized in that, described skin is antibiotic facing material layer.
6. three-dimensional mask according to claim 1, is characterized in that, described internal layer socket is two, is symmetricly set in the left and right side of filter disc; The width of the three-dimensional filter disc of described compound nonwoven polypropylene fabric is more than or equal to the distance between two sockets of mouth mask sheet portion internal layer, and the area of three-dimensional filter disc is less than or equal to the area of three-dimensional mask internal layer.
7. three-dimensional mask according to claim 1, it is characterized in that, described compound nonwoven polypropylene fabric filter disc (6) is three-decker, be respectively polypropylene spunbond nonwoven skin, polypropylene fibre melt spraying non-woven fabrics intermediate layer and polypropylene spunbond or fabric hot rolled nonwoven fabrics internal layer, described polypropylene fibre melt spraying non-woven fabrics intermediate layer is that single or multiple lift is compound.
8. three-dimensional mask according to claim 7, is characterized in that, described polypropylene spunbond or fabric hot rolled nonwoven fabrics internal layer and the outer field thickness of polypropylene spunbond nonwoven are respectively 0.1～0.8mm, and the thickness in polypropylene fibre melt spraying non-woven fabrics intermediate layer is 0.1～0.6mm.
9. three-dimensional mask according to claim 7, is characterized in that, described polypropylene spunbond nonwoven internal layer and the outer field grammes per square metre of polypropylene spunbond nonwoven are for being respectively 15～40g/m
2, the grammes per square metre in polypropylene fibre melt spraying non-woven fabrics intermediate layer is 15～60g/m
2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420169452.8U CN203762328U (en) | 2014-04-09 | 2014-04-09 | Three-dimensional mask capable of effectively filtering out PM2.5 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420169452.8U CN203762328U (en) | 2014-04-09 | 2014-04-09 | Three-dimensional mask capable of effectively filtering out PM2.5 |
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| Publication Number | Publication Date |
|---|---|
| CN203762328U true CN203762328U (en) | 2014-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420169452.8U Expired - Lifetime CN203762328U (en) | 2014-04-09 | 2014-04-09 | Three-dimensional mask capable of effectively filtering out PM2.5 |
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| Country | Link |
|---|---|
| CN (1) | CN203762328U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107997265A (en) * | 2018-01-31 | 2018-05-08 | 中国人民武装警察部队学院 | A kind of mask |
| CN113349481A (en) * | 2020-03-04 | 2021-09-07 | 浙江珍珠生活科技有限公司 | Pearl wool antibacterial medical protective mask and preparation method thereof |
-
2014
- 2014-04-09 CN CN201420169452.8U patent/CN203762328U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107997265A (en) * | 2018-01-31 | 2018-05-08 | 中国人民武装警察部队学院 | A kind of mask |
| CN113349481A (en) * | 2020-03-04 | 2021-09-07 | 浙江珍珠生活科技有限公司 | Pearl wool antibacterial medical protective mask and preparation method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Granted publication date: 20140813 |
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| CX01 | Expiry of patent term |