CN107373823A - A kind of Novel anti-mist haze mouth mask - Google Patents
A kind of Novel anti-mist haze mouth mask Download PDFInfo
- Publication number
- CN107373823A CN107373823A CN201710866817.0A CN201710866817A CN107373823A CN 107373823 A CN107373823 A CN 107373823A CN 201710866817 A CN201710866817 A CN 201710866817A CN 107373823 A CN107373823 A CN 107373823A
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- Prior art keywords
- breather valve
- mask
- layer
- mouth mask
- novel anti
- 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.)
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Classifications
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
- A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
- A41D13/1107—Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
- A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
- A41D13/1161—Means for fastening to the user's head
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
- A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
- A41D13/1192—Protective face masks, e.g. for surgical use, or for use in foul atmospheres with antimicrobial agent
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/04—Materials specially adapted for outerwear characterised by special function or use
- A41D31/30—Antimicrobial, e.g. antibacterial
- A41D31/305—Antimicrobial, e.g. antibacterial using layered materials
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/04—Materials specially adapted for outerwear characterised by special function or use
- A41D31/30—Antimicrobial, e.g. antibacterial
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The invention discloses Novel anti-mist haze mouth mask, including mask, ear band, breather valve, breather valve mounting hole is provided among face shield front portion, breather valve is connected with breather valve mounting hole, ear band is provided with two, ear band is connected with the left and right sides of mask respectively, the mask is provided with the upper lobes one to be matched with the bridge of the nose of the bridge of the nose and both sides on top, in the groove for being respectively arranged on the left side and the right side bridge of the nose and both sides cheek crossover position of projection one, again provided with less raised two to be matched with cheek and cheekbone on the outside of groove, the mask is provided with the lower lobes to be matched with mandibular in bottom.The present invention carries out one-size-fits-all structure design according to ergonomics parameter, the analysis of people's shape of face big data, and periphery and face are engaged position good airproof performance, have outstanding fitting effect and seal, avoid filtered air and enter in mouth mask, filter effect is more preferably.
Description
Technical field
The present invention relates to protective mask machine technical field, more particularly to a kind of Novel anti-mist haze mouth mask.
Background technology
Haze mouth mask of the prior art all uses planar structure, such as some haze mouth masks with activated carbon media
Overall adsorptivity is poor, and mouth mask is not high with the face-contacting portion position goodness of fit during using wearing, does not have ergonomics parameter, lacks
Weary Asian's shape of face big data analysis, does not distinguish sex and the differentiation at age, and sealing effectiveness is poor, and filtering and protection effect are poor,
Larger sense of feeling oppressed, mouth mask wearing comfort is poor, with serious and health of people protective awareness the enhancing of haze weather, gets over
More to need the mouth mask apparatus of anti-pollution haze, the mouth mask of prior art is not suitable with what people were protected air ambient and haze
It is required that.
The content of the invention
For solving the above-mentioned problems of the prior art, it is an object of the present invention to provide a kind of Novel anti-mist haze mouth mask;
The present invention carries out one-size-fits-all structure and set according to ergonomics parameter, the analysis of people's shape of face big data, difference sex and the differentiation at age
Meter, periphery and face are engaged position good airproof performance, and the present invention uses the mask of seven layer materials, and wherein cotton blended yarn weaved fabric has
There are antifouling, dust-proof, Water-proof and oil-proof, anti-flaming function;Carbon filtering layer filter diameter is pm10~pm15 pollutant suspended particulates;It is moulding
Colloid layer may filter that a diameter of pm5~pm10 pollutants suspended particulate;Micron/nano blending carbon filtering layer is a diameter of using may filter that
The nano-sized carbon filtering layer of pm2.5 pollutant suspended particulates, multiple filtration material superimposion one-shot forming, there is outstanding fitting to imitate
Fruit and seal, avoid filtered air and enter in mouth mask, filter effect is more preferably.
The present invention solve technical problem technical scheme be:
A kind of Novel anti-mist haze mouth mask, including mask, ear band, breather valve, face shield front portion centre are provided with breather valve mounting hole,
Breather valve is connected with breather valve mounting hole, and ear band is provided with two, and ear band is connected with the left and right sides of mask respectively, and the mask exists
Top is provided with the upper lobes one that are matched with the bridge of the nose of the bridge of the nose and both sides, projection one be respectively arranged on the left side and the right side bridge of the nose with
The groove of both sides cheek crossover position, groove outside is again provided with less raised two to be matched with cheek and cheekbone, the face
Cover on bottom and be provided with the lower lobes to be matched with mandibular.
Cotton blended yarn weaved fabric layer, carbon filtering layer, moulding colloid, the micron/nano that the mask includes being connected from outside to inside mix
Spin carbon filtering layer, nano-silver ionic textile fibre layer, be continuously generated anion layer, there is antibacterial and moisture absorption sweat discharging functions bamboo carbon
Fibrous woven nitride layer.
The cotton blended yarn weaved fabric is used with antifouling, dust-proof, Water-proof and oil-proof, the extraordinary cotton blending face of anti-flaming function
Material, cotton blended yarn weaved fabric were once attached with bamboo carbon fibre fabric layer by edge-covering fabric sewing.
The carbon filtering layer uses micron carbon filtering layer of the filter diameter for pm10~pm15 pollutant suspended particulates.
The moulding colloid layer is using the micron/nano blending carbon that may filter that a diameter of pm5~pm10 pollutants suspended particulate
Filtering layer.
The micron/nano blending carbon filtering layer is using the nano-sized carbon filter that may filter that a diameter of pm2.5 pollutants suspended particulate
Layer, nano-sized carbon filtering layer reserve the frame surplus that sewing is carried out with bound edge.
The textile fibre layer for stating nano-silver ionic uses the textile fibre layer containing nano-silver ionic, and textile fibre layer is thick
Coating is coated with by oil film covering before spinning, textile fibre layer reserves the frame surplus that sewing is carried out with bound edge.
The anion layer that is continuously generated is used with anion function is continuously generated, and netted generation layer reserves to enter with bound edge
The frame surplus of driving seam.
The breather valve include breather valve fore shell, breathing valve block, breather valve rear shell, breathing valve block located at breather valve fore shell with
Between breather valve rear shell, the breather valve fore shell is located at the outside of breather valve mounting hole, the breather valve rear shell with breathing valve block
It is close including the aft land, central mating face, anterior valve block supporting part being connected, wherein central mating face and breather valve mounting hole
Envelope is connected, and boss is located at the inner side of breather valve mounting hole, and breathing valve block is connected with valve block supporting part, set on breather valve fore shell
There is passage, breather valve is one-way breather valve.
The upper tie point with mask the same side, lower tie point are connected respectively at the both ends of every ear band, and the mask is in upper company
The inside groove hollowed out is provided between contact, lower tie point, the edge of groove matches with the cheek of both sides.
Beneficial effects of the present invention:
1. the present invention is carried out according to ergonomics parameter, the analysis of people's shape of face big data, difference sex and the differentiation at age
One-size-fits-all structure design, periphery and face are engaged position good airproof performance.
2. the present invention uses the mask of seven layer materials, wherein cotton blended yarn weaved fabric has antifouling, dust-proof, Water-proof and oil-proof, resistance
Fire function;Carbon filtering layer filter diameter is pm10~pm15 pollutant suspended particulates;Moulding colloid layer may filter that a diameter of pm5~
Pm10 pollutant suspended particulates;Micron/nano blending carbon filtering layer 24 uses and may filter that a diameter of pm2.5 pollutants suspended particulate
Nano-sized carbon filtering layer, multiple filtration material superimposion one-shot forming, there is outstanding fitting effect and seal, avoid without
Filtered air enters in mouth mask, and filter effect is more preferably.
In addition, the present invention is solved existing using the nano-sized carbon filtering layer that may filter that a diameter of pm2.5 pollutants suspended particulate
Once problem existing for haze mouth mask of the technology using activated carbon as protective media:Activated carbon media production and transport sales process
Middle exposure can not be identified and control in atmosphere, due to the adsorption function of activated carbon itself so that activated carbon is not answered
The problem of haze mouth mask entirety adsorptivity difference of activated carbon media caused by the adsorption saturation of used time top layer.The present invention is in mouth
The mode such as integrated use temperature control, pressure, high pressure shape makes the haze mouth that active carbon adsorption material is medium in cover production process
Cover is in use through shaking, rubbing, washing etc. and to be reactivated under application environment, the adsorption function of Activation Activity carbon.
Bossing leaves the space of fresh air, reduces sense of feeling oppressed so that mouth mask wearing is more comfortable, being capable of potent mistake
Harmful substance in air filtering, the air that incoming call is more cleaned, while coordinate the setting of one-way breather valve, add the suitable of breathing
Freely, sense of feeling oppressed is reduced so that mouth mask wears more comfortable ventilating.
3. by provided with groove 205.Material can be saved, while the edge of groove matches sealing with the cheek of both sides
Property is good.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present invention;
Fig. 2 is each several part position relationship structural representation of the present invention;
Fig. 3 is the attachment structure schematic diagram of breather valve rear shell 33;
Fig. 4 is each several part annexation structural representation of the present invention.
Embodiment
For a better understanding of the present invention, embodiments of the present invention are explained in detail below in conjunction with the accompanying drawings.
As shown in Figures 1 to 4, a kind of Novel anti-mist haze mouth mask, including mask 2, ear band 1, breather valve 3, in the front portion of mask 2
Between be provided with breather valve mounting hole, breather valve 3 is connected with breather valve mounting hole, and ear band is provided with two, the ear band left side with mask respectively
Right both sides connection, the mask 2 is provided with the upper lobes 1 to be matched with the bridge of the nose of the bridge of the nose and both sides on top, in projection
One groove 202 for being respectively arranged on the left side and the right side bridge of the nose and both sides cheek crossover position, the outside of groove 22 again provided with cheek and
Cheekbone match less raised 2 203, the mask 2 is provided with the lower lobes 204 that are matched with mandibular in bottom.
It is cotton blended yarn weaved fabric layer 21 that the mask 2 includes being connected from outside to inside, carbon filtering layer 22, moulding colloid 23, micro-
Rice nanometer blending carbon filtering layer 24, nano-silver ionic textile fibre layer 25, be continuously generated anion layer 26, there is antibacterial and moisture absorption
27 7 layers of the bamboo carbon fibre fabric layer of perspiration functions, the mask is by 2 layers of novel fabric, 1 layer of moulding material, 4 layers of new technology
Filtering material superimposion one-shot forming, bossing are in drops, leave the space of fresh air, reduce sense of feeling oppressed so that
Mouth mask is worn more comfortable.The filter layer uses core filtering material, can it is potent cross air filtering in harmful substance, incoming call
The air more cleaned, the setting of the one-way breather valve, the smooth of breathing is added, reduce sense of feeling oppressed so that mouth mask is worn more
Add comfortable ventilating.The mouth mask is integrally formed by front and rear sponge and multilayer core material, have outstanding fitting effect with it is closed
Property, avoiding filtered air enters in mouth mask, and filter effect is more preferably.
The cotton blended yarn weaved fabric 21 is using the extraordinary cotton blending with antifouling, dust-proof, Water-proof and oil-proof, anti-flaming function
Fabric, cotton blended yarn weaved fabric once 21 were attached with bamboo carbon fibre fabric layer by edge-covering fabric sewing.
The carbon filtering layer 22 uses micron carbon filtering layer of the filter diameter for pm10~pm15 pollutant suspended particulates;Carbon filtering layer
Between 22 and third layer heat seal processing is carried out using fusion spray cloth.Extend the service life of moulding colloid layer 23 by carbon filtering layer 22.
The moulding colloid layer 23 is using the micron/nano blending that may filter that a diameter of pm5~pm10 pollutants suspended particulate
Carbon filtering layer;Between moulding colloid layer 23 and micron/nano the blending carbon filtering layer heat seal processing is carried out using fusion spray cloth.Pass through modeling
Shape colloid layer 23 extends the 4th layer of service life.
The micron/nano blending carbon filtering layer 24 is using the nano-sized carbon filter that may filter that a diameter of pm2.5 pollutants suspended particulate
Layer, nano-sized carbon filtering layer reserve the frame surplus that sewing is carried out with bound edge.
The textile fibre layer 25 for stating nano-silver ionic uses the textile fibre layer containing nano-silver ionic, and fiber is in slubbing
It is preceding that coating is coated with by oil film covering, the aqueous vapor isolated in exhalation air, anti-blocking filtering layer saturation, textile fabric because of water suction
Layer reserves the frame surplus that sewing is carried out with bound edge.
The anion layer 26 that is continuously generated passes through anion and occurred with adsorbing using with anion function is continuously generated
Air mixes, and the full amount of having of anion is reached the netted generation layer of forest state.Netted generation layer reserves enters driving with bound edge
The frame surplus of seam.
The breather valve 3 includes breather valve fore shell 31, breathing valve block 32, breather valve rear shell 33, and breathing valve block 32, which is located at, exhales
Inhale between valve fore shell and breather valve rear shell, the breather valve fore shell is located at the outside of breather valve mounting hole with breathing valve block, described
Breather valve rear shell 33 includes aft land 331, central mating face 333, the anterior valve block supporting part 332 being connected, wherein among
The sealing of mating surface 333 and breather valve mounting hole is connected, and boss 331 be located at the inner side of breather valve mounting hole, breathe valve block and
Valve block supporting part 332 connects, and breather valve fore shell 31 is provided with passage.Breather valve is one-way breather valve, and the gas of exhalation is just
Valve block is opened discharge exhalation waste gas by air pressure, feeling of oppression and heat and waste gas when can reduce use, and negative pressure during air-breathing closes automatically
Valve closing piece, breathing is avoided to arrive environmental contaminants.
The upper tie point with mask the same side, lower tie point are connected respectively at the both ends of every ear band, and the mask is in upper company
The inside groove 205 hollowed out is provided between contact, lower tie point, the edge of groove matches with the cheek of both sides.By setting
Fluted 205.Material can be saved, while the edge of groove matches good airproof performance with the cheek of both sides.
Although above-mentioned the embodiment of invention is described with reference to accompanying drawing, not to the scope of the present invention
Limitation, on the basis of technical scheme, those skilled in the art need not pay creative work and can make
Various modifications or deformation still within protection scope of the present invention.
Claims (10)
1. a kind of Novel anti-mist haze mouth mask, including mask, ear band, breather valve, it is characterized in that, it is provided with breather valve among face shield front portion
Mounting hole, breather valve are connected with breather valve mounting hole, and ear band is provided with two, and ear band is connected with the left and right sides of mask respectively, institute
State mask and the upper lobes one to be matched with the bridge of the nose of the bridge of the nose and both sides are provided with top, set respectively in the left and right sides of projection one
There is the groove of bridge of the nose and both sides cheek crossover position, the less projection to be matched with cheek and cheekbone is provided with again on the outside of groove
Two, the mask is provided with the lower lobes to be matched with mandibular in bottom.
2. a kind of Novel anti-mist haze mouth mask as claimed in claim 1, it is characterized in that, the mask includes being connected from outside to inside
Cotton blended yarn weaved fabric layer, carbon filtering layer, moulding colloid, micron/nano blending carbon filtering layer, nano-silver ionic textile fibre layer, hold
Continuous generation anion layer, there is antibacterial and moisture absorption sweat discharging functions bamboo carbon fibre fabric layer.
3. a kind of Novel anti-mist haze mouth mask as claimed in claim 1, it is characterized in that, the cotton blended yarn weaved fabric, which uses to have, to be prevented
The extraordinary cotton blended yarn weaved fabric of dirty, dust-proof, Water-proof and oil-proof, anti-flaming function, cotton blended yarn weaved fabric once with bamboo carbon fibre fabric layer
It is attached by edge-covering fabric sewing.
4. a kind of Novel anti-mist haze mouth mask as claimed in claim 2, it is characterized in that, the carbon filtering layer use filter diameter for
The micron carbon filtering layer of pm10~pm15 pollutant suspended particulates.
5. a kind of Novel anti-mist haze mouth mask as claimed in claim 2, it is characterized in that, the moulding colloid layer is straight using may filter that
Footpath is the micron/nano blending carbon filtering layer of pm5~pm10 pollutant suspended particulates.
6. a kind of Novel anti-mist haze mouth mask as claimed in claim 2, it is characterized in that, the micron/nano blending carbon filtering layer uses
The nano-sized carbon filtering layer of a diameter of pm2.5 pollutants suspended particulate is may filter that, nano-sized carbon filtering layer reserves the side that sewing is carried out with bound edge
Frame surplus.
7. a kind of Novel anti-mist haze mouth mask as claimed in claim 2, it is characterized in that, the textile fibre layer of the nano-silver ionic
Using the textile fibre layer containing nano-silver ionic, textile fibre layer is coated with coating before slubbing by oil film covering, weaves
Fibrous layer reserves the frame surplus that sewing is carried out with bound edge.
8. a kind of Novel anti-mist haze mouth mask as claimed in claim 2, it is characterized in that, the anion layer that is continuously generated is using tool
Anion function is continuously generated, the netted layer that occurs reserves the frame surplus that sewing is carried out with bound edge.
9. a kind of Novel anti-mist haze mouth mask as claimed in claim 1, it is characterized in that, the breather valve include breather valve fore shell,
Valve block, breather valve rear shell are breathed, breathing valve block is located between breather valve fore shell and breather valve rear shell, and the breather valve fore shell is with exhaling
Inhale valve block and be located at the outside of breather valve mounting hole, the breather valve rear shell includes the aft land, central mating face, preceding that is connected
Portion's valve block supporting part, wherein central mating face are connected with the sealing of breather valve mounting hole, and boss is located at breather valve mounting hole
Inner side, breathing valve block are connected with valve block supporting part, and breather valve fore shell is provided with passage, and breather valve is one-way breather valve.
10. a kind of Novel anti-mist haze mouth mask as claimed in claim 1, it is characterized in that, the both ends of every ear band respectively with mask
The upper tie point of the same side, the connection of lower tie point, the mask be provided between upper tie point, lower tie point hollow out it is inside
Groove, the edge of groove match with the cheek of both sides.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201710866817.0A CN107373823A (en) | 2017-09-22 | 2017-09-22 | A kind of Novel anti-mist haze mouth mask |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201710866817.0A CN107373823A (en) | 2017-09-22 | 2017-09-22 | A kind of Novel anti-mist haze mouth mask |
Publications (1)
Publication Number | Publication Date |
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CN107373823A true CN107373823A (en) | 2017-11-24 |
Family
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Family Applications (1)
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CN201710866817.0A Pending CN107373823A (en) | 2017-09-22 | 2017-09-22 | A kind of Novel anti-mist haze mouth mask |
Country Status (1)
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CN (1) | CN107373823A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114468420A (en) * | 2022-02-28 | 2022-05-13 | 桂林电子科技大学 | Mask for eliminating second-hand smoke |
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EP0162546A1 (en) * | 1984-03-27 | 1985-11-27 | Minnesota Mining And Manufacturing Company | Molded fibrous filtration products |
CN2601698Y (en) * | 2003-03-31 | 2004-02-04 | 天津市赛远保健品有限公司 | Novel facemask |
CN2810235Y (en) * | 2005-06-14 | 2006-08-30 | 王占英 | Anion infrared health mouthpiece |
CN101980751A (en) * | 2008-04-24 | 2011-02-23 | 宫尾俊辅 | Multilayered mask |
CN102302877A (en) * | 2011-06-01 | 2012-01-04 | 李红 | Biological protection filter medium and application thereof |
CN202635663U (en) * | 2011-12-26 | 2013-01-02 | 权盈科技工业有限公司 | A respirator with an improved structure |
CN103815589A (en) * | 2014-03-03 | 2014-05-28 | 高正强 | Multilayer mask |
CN104290381A (en) * | 2014-09-24 | 2015-01-21 | 长兴志恒服装辅料有限公司 | Waterproof and ventilated dacron printed fabric |
CN204146394U (en) * | 2014-07-16 | 2015-02-11 | 北京富纳特创新科技有限公司 | PM2.5 mouth mask |
CN205547459U (en) * | 2016-04-18 | 2016-09-07 | 广州拜费尔空气净化材料有限公司 | Breathing mask |
CN207322746U (en) * | 2017-09-22 | 2018-05-08 | 山东工大新材料研究院有限公司 | A kind of Novel anti-mist haze mask |
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2017
- 2017-09-22 CN CN201710866817.0A patent/CN107373823A/en active Pending
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0162546A1 (en) * | 1984-03-27 | 1985-11-27 | Minnesota Mining And Manufacturing Company | Molded fibrous filtration products |
CN2601698Y (en) * | 2003-03-31 | 2004-02-04 | 天津市赛远保健品有限公司 | Novel facemask |
CN2810235Y (en) * | 2005-06-14 | 2006-08-30 | 王占英 | Anion infrared health mouthpiece |
CN101980751A (en) * | 2008-04-24 | 2011-02-23 | 宫尾俊辅 | Multilayered mask |
CN102302877A (en) * | 2011-06-01 | 2012-01-04 | 李红 | Biological protection filter medium and application thereof |
CN202635663U (en) * | 2011-12-26 | 2013-01-02 | 权盈科技工业有限公司 | A respirator with an improved structure |
CN103815589A (en) * | 2014-03-03 | 2014-05-28 | 高正强 | Multilayer mask |
CN204146394U (en) * | 2014-07-16 | 2015-02-11 | 北京富纳特创新科技有限公司 | PM2.5 mouth mask |
CN104290381A (en) * | 2014-09-24 | 2015-01-21 | 长兴志恒服装辅料有限公司 | Waterproof and ventilated dacron printed fabric |
CN205547459U (en) * | 2016-04-18 | 2016-09-07 | 广州拜费尔空气净化材料有限公司 | Breathing mask |
CN207322746U (en) * | 2017-09-22 | 2018-05-08 | 山东工大新材料研究院有限公司 | A kind of Novel anti-mist haze mask |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN114468420A (en) * | 2022-02-28 | 2022-05-13 | 桂林电子科技大学 | Mask for eliminating second-hand smoke |
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Application publication date: 20171124 |
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