CN208002142U - A kind of novel haze-proof mask - Google Patents
A kind of novel haze-proof mask Download PDFInfo
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- CN208002142U CN208002142U CN201820096656.1U CN201820096656U CN208002142U CN 208002142 U CN208002142 U CN 208002142U CN 201820096656 U CN201820096656 U CN 201820096656U CN 208002142 U CN208002142 U CN 208002142U
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Abstract
The utility model is related to amenities and technical field of air purification, disclose a kind of novel haze-proof mask, including mask body, mask body includes filtration and the contact layer on the inside of filtration directly to be contacted with user face, filtration includes the filtering module of at least two different materials, and each filtering module can mutual triboelectrification and can be with the not charged particulate matter triboelectrification in air；Contact layer is that the inert material not reacted by acid-fast alkali-proof swelling resistance and with any substance is prepared.When air is inhaled into, the charged particle thing in air can be attracted to the surface of filtering module, uncharged particulate matter and filtering module frictional impact and take charge, further be adsorbed, to realize high efficiency filter；Also, contact layer is that the inert material not reacted by acid-fast alkali-proof and with any substance is prepared, and is not easy to react with the generation of the substance of face when contact layer is with user's facial contact so that facial skin is clean and tidy, healthy.
Description
Technical field
The utility model is related to amenities and technical field of air purification, more particularly to a kind of novel haze-proof mask.
Background technology
Nowadays, the environment that people depend on for existence is more and more severe, and the concentration of particulate in air is continuously increased, and gives people
Cardio-pulmonary function and health bring serious threat, mask is assented as the product for keeping out this infringement and is given birth to, and gradually
It gets the favour of people, still, for most people, the mask although health appropriate for protecting them, but it is right
Allergy is easily caused to skin contact in the material of many masks, next mask having even with the position of skin contact adornment
All rub.
Mask technology at this stage, people are more whether concern mask filter effect, leakproofness and appearance are good-looking.
It is fewer for mask material Quality Research itself.Therefore, research and development one kind can tiny particles content in high efficiency filter air, more can
The gauze mask of waterproof and oilproof is extremely urgent.
Utility model content
The utility model provides a kind of novel haze-proof mask, and above-mentioned novel haze-proof mask both can guarantee high efficiency filter air
In particulate matter, and can make to be not easy to generate with the substance of face when contacting with face inside mask to react so that facial skin is whole
It is clean, healthy.
In order to achieve the above objectives, the utility model provides following technical scheme：
A kind of novel haze-proof mask, including mask body, the mask body include filtration and be located at the filtering
Contact layer on the inside of structure directly to be contacted with user face, wherein：
The filtration includes the filtering module of at least two different materials, and each filtering module can phase mutual friction
Electricity and can be with the not charged particulate matter triboelectrification in air；
The contact layer is that the inert material not reacted by acid-fast alkali-proof swelling resistance and with any substance is prepared.
Above-mentioned novel haze-proof mask includes mask body, mask body include filtration and on the inside of filtration with
The contact layer directly contacted with user face；Wherein, filtration includes the filtering module of at least two different materials, each mistake
Filtering module can mutual triboelectrification and can be with the not charged particulate matter triboelectrification in air；When air is inhaled into, air
In charged particle thing can be attracted to the surface of filtering module, uncharged particulate matter and filtering module frictional impact simultaneously take
Charge is further adsorbed, to realize high efficiency filter；Also, contact layer be by acid-fast alkali-proof swelling resistance and not with it is any
The inert material that substance reacts is prepared, and is not easy to generate with the substance of face when contact layer and user's facial contact
Reaction so that facial skin is clean and tidy, healthy.
Preferably, the contact layer is the fluoroplastics nonwoven layer by electrostatic spinning melt-processed.
Preferably, the fluoroplastics are polytetrafluoroethylene (PTFE), polytrifluorochloroethylene, Kynoar, polyvinyl fluoride, tetrafluoro second
One kind in alkene-ethylene copolymer.
Preferably, contact layer position corresponding with the mouth and nose of user is equipped with multiple ventilative through holes.
Preferably, water accepting layer is equipped between the contact layer and the filtration.
Preferably, the filtration includes at least two layers filtering by being sequentially stacked inwardly on the outside of the mask body
Layer, each layer filter layer form a filtering module；Alternatively,
The filtration includes a filtering body, and the filtering body is equipped with multiple air holes, described in each
At least two nano friction polymeric particles are filled in air hole, each described nano friction polymeric particles forms one kind
Filtering module；Alternatively,
The filtration includes a filtering body, and the filtering body is equipped with multiple air holes, described in each
Filled with a kind of and the filtering body different materials nano friction polymeric particles to form a kind of filter module in air hole
Block, the filtering body form another filtering module；Alternatively,
The filtration includes a filtering body, and the filtering body is equipped with multiple air holes, described in each
A kind of nano friction high molecular material is coated on the inner wall of air hole to form a kind of filtering module, and each is described ventilative
Filled with another nano friction high molecular material to form another filtering module in hole.
Preferably, when the filtration includes at least two layers of mistake by being sequentially stacked inwardly on the outside of the mask body
When filtering layer, the filter layer is three layers, including the first filter layer, the second filter layer and the third filter layer being sequentially stacked, wherein：
First filter layer and third filter layer are polypropylene non-woven layer of cloth, the poly- trifluoro chloroethene of polyvinylidene fluoride layer
Any one of alkene, polyvinyl fluoride, tetrafluoroethylene-ethylene copolymer or polytetrafluoroethylene ethylene layer, second filter layer are melt-blown
Layer of cloth.
Preferably, the first filtering layer surface is formed with super large breather valve, and the breather valve includes：Valve body is breathed,
The breathing valve body is through the mask body and has multiple stomatas through the mask body；
With the one-to-one spool of the stomata, per in a pair of mutual corresponding stomata and spool, the spool is installed on
In the stomata, and when the wearer exhales the air, the spool is in the open state, and when the wearer inhales the air, the spool is in
Closed state, wherein the spool includes at least two spool filtering modules, and the material of each spool filtering module can be with sky
Not charged particulate matter triboelectrification in gas, and can mutual triboelectrification between the material of different spool filtering modules.
Preferably, the mask body has structure symmetrical above and below, includes to cover the middle part of user's mouth, connection
Above the middle part with the first side for being bonded with user's bridge of the nose and be connected to below the middle part with use
Second side of person's chin fitting.
Preferably, in the mask body, between middle part and the first side, heat is used between middle part and the second side
Molded connection.
Preferably, the mask body have bilateral symmetry and can along the center line symmetrical fold of its vertical direction,
Wherein,
The center line of the vertical direction of the mask body corresponds to the maximum width of the mask body, and the middle part can
The maximum width of tune is 70-90mm, and the adjustable maximum width in first side and the second side is 45-55mm, the mask
The width of ontology by the position of center line of vertical direction, successively decrease to the left and right by both ends, and the width at both ends is minimum, is 45~55mm, described
The distance at mask body center line to both ends is 90~105mm；When the mask body is symmetrical along the center line of its vertical direction
After folding, the first side length of the position of center line of the mask body both ends and vertical direction is connected in first side
For 70~90mm, the second side of the position of center line of the mask body both ends and vertical direction is connected in second side
Length is 70~90mm.
Preferably, the left and right ends of the mask body are equipped with lanyard, and the length of the lanyard is 100mm-120mm.
Preferably, the middle part upper position of the first side fitting face side is equipped with a sealing strip.
Description of the drawings
Fig. 1 is a kind of layered structure schematic diagram for novel haze-proof mask that the utility model embodiment provides；
Fig. 2 is a kind of wearing schematic diagram for novel haze-proof mask that the utility model embodiment provides；
Fig. 3 is a kind of side view for novel haze-proof mask that the utility model embodiment provides；
Fig. 4 a are charge schematic diagram when the three layer filtration layer that the utility model embodiment provides is not used；
Fig. 4 b are a kind of band electrical schematic after the three layer filtration layer use that the utility model embodiment provides；
Fig. 4 c are a kind of band electrical schematic after the three layer filtration layer use that the utility model embodiment provides；
Fig. 4 d are a kind of band electrical schematic after the three layer filtration layer use that the utility model embodiment provides.
Icon：
1- mask bodies；The first sides 11-；12- middle parts；The second sides 13-；A- filtrations；A1- first is filtered
Layer；The second filter layers of A2-；A3- third filter layers；B- contact layers；2- breather valves；3- lanyards.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
It please refers to Fig.1 and Fig. 2, the utility model provides a kind of novel haze-proof mask, including mask body 1, mask sheet
Contact layer B of the body 1 including filtration A and on the inside of filtration directly to be contacted with user face, wherein：
Filtration A includes the filtering module of at least two different materials, each filtering module can mutually triboelectrification and
It can be with the not charged particulate matter triboelectrification in air；
Contact layer B is to be cut by acid-fast alkali-proof swelling resistance and the inert material not reacted with any substance is prepared.
Above-mentioned novel haze-proof mask includes mask body 1, and mask body 1 includes filtration A and is located in filtration
Contact layer B of the side directly to be contacted with user face；Wherein, filtration A includes the filter module of at least two different materials
Block, each filtering module can mutual triboelectrifications and can be with the not charged particulate matter triboelectrification in air；When air is inhaled into
When, the charged particle thing in air can be attracted to the surface of filtering module, and uncharged particulate matter is touched with filtering module friction
Charge is hit and taken, is further adsorbed, to realize high efficiency filter；Also, contact layer B be by acid-fast alkali-proof swelling resistance and
The inert material not reacted with any substance is prepared, and as contact layer B and when user's facial contact is not easy and face
Water, the mixtures such as oil react so that mask keeps clean hygiene, moreover it is possible to so that facial skin is clean and tidy, health.
In above-described embodiment, contact layer B is the fluoroplastics nonwoven layer by electrostatic spinning melt-processed.What women used
In cosmetics, ingredient of the ingredient substantially all containing salicylic acid, tartaric acid, alcohols, oxide, vitamin or the like, traditional mouth
Cover influences female face dressing because of itself material reason, more or less meeting and these substance reactions, and electrostatic spinning is molten
The fluoroplastics non-woven fabrics for melting processing is a kind of material developed, and can be in direct contact with human face, and this material can
The chemical inertnesses such as acidproof, alkaline-resisting are extremely strong, solvent swell superior performance, and do not react with any substance.
In above-described embodiment, fluoroplastics are polytetrafluoroethylene (PTFE), polytrifluorochloroethylene, Kynoar, polyvinyl fluoride, tetrafluoro
One kind in ethylene-vinyl copolymer, and it is not limited solely to above-mentioned fluoroplastics material.Above-mentioned material resists solvent swell, dissolving, tortoise
The ability split or deformed is superpower, and does not react with various substances in cosmetic composition, can function well as maintenance face
The effect of permanent dried sanitary.
In above-described embodiment, the positions corresponding with the mouth and nose of user contact layer B are equipped with multiple ventilative through holes, make user
It good can breathe freely when breathing, prevent from feeling oppressed.
In above-described embodiment, water accepting layer is also provided between contact layer B and filtration A.Water accepting layer, which has to absorb, exhales
The effect of the moisture generated when suction can make 1 interior side contacts layer of mask body keep dry and comfortable, further good maintenance face adornment
Hold and face it is clean, sanitary.
In above-described embodiment, filtration A includes at least two layers filtering being sequentially stacked inwardly by 1 outside of mask body
Layer, each layer of filter layer form a filtering module, the mutual triboelectrification of two filter layers and can with it is not charged in air
Particulate matter triboelectrification has the function that purify air to adsorb the particle in air；Alternatively,
Filtration A includes a filtering body, and filtering body is equipped with multiple air holes, is filled in each air hole
There are at least two nano friction polymeric particles, each nano friction polymeric particles forms a kind of filtering module, air hole
In the mutual triboelectrification of two kinds of nano friction polymeric particles and with the not charged particulate matter triboelectrification in air, with inhale
Particle in attached air has the function that purify air；Alternatively,
Filtration A includes a filtering body, and filtering body is equipped with multiple air holes, is filled in each air hole
There are a kind of and filtering body different materials nano friction polymeric particles to form a kind of filtering module, filtering body is formed separately
A kind of filtering module, air hole and the mutual triboelectrification of filtering module and with the not charged particulate matter triboelectrification in air,
To adsorb the particle in air, have the function that purify air；Alternatively,
Filtration A includes a filtering body, and filtering body is equipped with multiple air holes, the inner wall of each air hole
It is upper to be coated with a kind of nano friction high molecular material to form a kind of filtering module, and other one is filled in each air hole
Kind of nano friction high molecular material to form another filtering module, nano friction high molecular material on air hole inner wall with thoroughly
It the mutual triboelectrification of another nano friction high molecular material in stomata and rubs with the not charged particulate matter in air
Electricity has the function that purify air to adsorb the particle in air.
In above-described embodiment, specifically, as shown in Figure 1, when filtration A include by the outside of mask body 1 inwardly according to
When secondary stacked at least two filter layers, filter layer is three layers, including the first filter layer A1, the second filter layer A2 being sequentially stacked
With third filter layer A3, wherein：First filter layer A1 and third filter layer A3 is polypropylene non-woven layer of cloth, polyvinylidene fluoride layer
Any one in polytrifluorochloroethylene, polyvinyl fluoride, tetrafluoroethylene-ethylene copolymer or polytetrafluoroethylene ethylene layer, the second filtering
Layer A2 is meltblown fabric layer.When the material identical of the first filter layer A1 and third filter layer A3 or difference, the second filter layer A2 is equal
With the particulate matter adsorbed in air the air of incoming call can be obtained with the first filter layer A1 and third filter layer A2 triboelectrifications
Purification.Also, contact layer B can also have catharsis in mask body 1, realize four layers of non-woven fabrics and efficiently rub purification,
It filters more efficient.
Specifically, before the use of above-mentioned three layer filtration layer status diagram as shown in fig. 4 a, such as using rear status diagram
Shown in Fig. 4 b, 4c and 4d.Any object is all by atomic building, and atom is by positively charged atomic nucleus and electronegative electronics
It is formed, electronics is around atom nuclear motion.In general, that is, not under by any outer force effect, atomic nucleus band is just
Charge number is equal with the negative electrical charge number of electron outside nucleus band, and atom is not aobvious electrical, so whole object is neutral, such as Fig. 4 a institutes
Show, the three layer filtration layer of mask body is not charged.Positive charge quantity is difficult to change, and electron outside nucleus can break away from original in atomic nucleus
The constraint of daughter nucleus is transferred on another object, to make the negative charge number of electron outside nucleus band change.When object loses electronics
When, the negative electrical charge sum of its electronic band is fewer than nuclear positive charge, just show it is positively charged, as shown in Figure 4 b, mask sheet
The three layer filtration layer of body is positively charged；On the contrary, being neutral object originally, when obtaining electronics, it just shows negatively charged, such as figure
Shown in 4c, the three layer filtration layer of mask body is negatively charged.When two object rubs mutuallies, because of the atomic nucleus constraint of different objects
The ability of electron outside nucleus is different, so some electronics wherein must be lost there are one object, another object obtains extra electricity
Son, as shown in figure 4d, the positive and negative difference of charge that the three layer filtration layer of mask body is carried.After human body is worn after mask, in wind
Under the action of power and under the respiration of human body, the mutual collision between each layer of particulate matter and mask body in air
Friction, makes its each layer friction part that can carry different degrees of charge, and efficient triboelectric charge can charge particulate in air
Particle is adsorbed, and uncharged particulate matter is further charged by collision friction, is further adsorbed, efficient to realize
Filtering.
In above-described embodiment, optionally, as shown in Fig. 2, the first surfaces filter layer A1 are formed with breather valve 2, breather valve 2 wraps
It includes：Valve body is breathed, valve body impenetrating mouth cover body is breathed and there is multiple stomatas through mask body；One by one with stomata
Corresponding spool, per in a pair of mutual corresponding stomata and spool, spool is installed in stomata, and when the wearer exhales the air, valve
Core is in the open state, and when the wearer inhales the air, spool is in closed state.
Specifically, include to cover the centre of user's mouth as shown in figure 3, mask body 1 has structure symmetrical above and below
Portion 12, be connected to above middle part the first side 11 be bonded with user's bridge of the nose and be connected to middle part lower section with make
Second side 13 of user's chin fitting, the first side 11 and the second side 13 can effectively with the chin of user and the bridge of the nose
Suit well, realizes that comprehensive package, guarantee do not leak out.
It should be noted that the first side 11 of mask body 1, middle part 12 and the second side 13 all have above-mentioned filtering
Structure A and contact layer B.
In above-described embodiment, in mask body 1, between middle part 12 and the first side 11, middle part 12 and the second side
Hot-forming connection is used between 13.Specifically, the link position of the first side 11, middle part 12 and the second side 13 is all made of
Ultrasonic heat is molded, the first side 11, middle part 12 and 13 this part edge of the second side be all made of four layers it is hot-forming,
Four layer materials are compound.Each layer of mask not any active force between each other, in the raw.
In above-described embodiment, mask body 1 has bilateral symmetry and can symmetrically be rolled over along the center line of its vertical direction
It is folded, wherein
The center line of the vertical direction of mask body 1 corresponds to the maximum width of mask body, and middle part is adjustable maximum wide
Degree H1 is 70-90mm, that is, the first side and the second side are 70-90mm apart from maximum occurrences, for example, can be 75mm,
80mm, 85mm etc. can meet different consumer-users, and possess enough breathing spaces.First side and the second side
The adjustable maximum width H4 in portion is 45-55mm, such as can be 50mm etc., meets the user of different shapes of face, fully considers consumption
Person experiences.The width of mask body by the position of center line of vertical direction, successively decrease to the left and right by both ends, and the width H2 at both ends is minimum, is
The distance H3 of 45~55mm, mask body center line to both ends are 90~105mm；When mask body is along the center of its vertical direction
After line symmetrical fold, the first side 111 that the position of center line of mask body both ends and vertical direction is connected in the first side is grown
Degree H5 is 70~90mm, and the second side of the position of center line of mask body both ends and vertical direction is connected in the second side 13
131 length H5 are 70~90mm.The maximum width of first side 11 of mask body, middle part 12 and the second side 13 is all
It is adjustable, it disclosure satisfy that the demand of the user of different shapes of face.
In above-described embodiment, the left and right ends of mask body 1 are equipped with lanyard 3, and the length of lanyard 3 is 100mm-120mm.Its
In, the lanyard 3 at both ends uses elastic telescopic line, and in the case of nonelastic deformation, drift value range is 100mm-
120mm；The connection of lanyard 3 and middle part 12 also uses hot-forming.
In above-described embodiment, the middle part upper position that the first side 11 is bonded face side is equipped with a sealing strip.Sealing strip
The shape for being suitble to its bridge of the nose can be changed according to different users' bridge of the nose height difference, be bonded the bridge of the nose.
Obviously, those skilled in the art the utility model embodiment can be carried out various modification and variations without departing from
The spirit and scope of the utility model.In this way, if these modifications and variations of the present invention belong to the utility model right
It is required that and its within the scope of equivalent technologies, then the utility model is also intended to include these modifications and variations.
Claims (13)
1. a kind of novel haze-proof mask, which is characterized in that including mask body, the mask body includes filtration and is located at
Contact layer on the inside of the filtration directly to be contacted with user face, wherein：
The filtration includes the filtering module of at least two different materials, each filtering module can mutually triboelectrification with
And it can be with the not charged particulate matter triboelectrification in air；
The contact layer is that the inert material not reacted by acid-fast alkali-proof swelling resistance and with any substance is prepared.
2. novel haze-proof mask according to claim 1, which is characterized in that the contact layer is to be melted by electrostatic spinning
The fluoroplastics nonwoven layer of processing.
3. novel haze-proof mask according to claim 2, which is characterized in that the fluoroplastics are polytetrafluoroethylene (PTFE), poly- three
One kind in fluorine vinyl chloride, Kynoar, polyvinyl fluoride, tetrafluoroethylene-ethylene copolymer.
4. novel haze-proof mask according to claim 1, which is characterized in that the mouth and nose face of the contact layer and user
Corresponding position is equipped with multiple ventilative through holes.
5. novel haze-proof mask according to claim 4, which is characterized in that between the contact layer and the filtration
Equipped with water accepting layer.
6. novel haze-proof mask according to claim 1, which is characterized in that the filtration includes by the mask sheet
At least two filter layers that external lateral inside is sequentially stacked, each layer filter layer form a filtering module；Alternatively,
The filtration includes a filtering body, and the filtering body is equipped with multiple air holes, each is described ventilative
At least two nano friction polymeric particles are filled in hole, each described nano friction polymeric particles forms a kind of filtering
Module；Alternatively,
The filtration includes a filtering body, and the filtering body is equipped with multiple air holes, each is described ventilative
Filled with a kind of and the filtering body different materials nano friction polymeric particles to form a kind of filtering module, institute in hole
It states filtering body and forms another filtering module；Alternatively,
The filtration includes a filtering body, and the filtering body is equipped with multiple air holes, each is described ventilative
A kind of nano friction high molecular material is coated on the inner wall in hole to form a kind of filtering module, and in each described air hole
Filled with another nano friction high molecular material to form another filtering module.
7. novel haze-proof mask according to claim 6, which is characterized in that when the filtration includes by the mask
When at least two filter layers that outer body is sequentially stacked inwardly, the filter layer is three layers, including first be sequentially stacked
Filter layer, the second filter layer and third filter layer, wherein：
First filter layer and third filter layer are polypropylene non-woven layer of cloth, polyvinylidene fluoride layer polytrifluorochloroethylene, gather
Any one in vinyl fluoride, tetrafluoroethylene-ethylene copolymer or polytetrafluoroethylene ethylene layer, second filter layer are fusion spray cloth
Layer.
8. novel haze-proof mask according to claim 7, which is characterized in that the first filtering layer surface is formed with super large
Breather valve, the breather valve include：Valve body is breathed, the breathing valve body is passed through through the mask body and with multiple
Wear the stomata of the mask body；
With the one-to-one spool of the stomata, per in a pair of mutual corresponding stomata and spool, the spool is installed on described
In stomata, and when the wearer exhales the air, the spool is in the open state, and when the wearer inhales the air, the spool, which is in, to be closed
State, wherein the spool includes at least two spool filtering modules, the material of each spool filtering module can in air
Not charged particulate matter triboelectrification, and can mutual triboelectrification between the material of different spool filtering module.
9. according to the novel haze-proof mask of claim 1-8 any one of them, which is characterized in that the mask body has up and down
Symmetrical structure includes to cover the middle part of user's mouth, be connected to above the middle part to be bonded with user's bridge of the nose
The first side and be connected to the second side below the middle part to be bonded with user's chin.
10. novel haze-proof mask according to claim 9, which is characterized in that in the mask body, middle part and first
Between side, hot-forming connection is used between middle part and the second side.
11. novel haze-proof mask according to claim 9, which is characterized in that the mask body has symmetrical knot
Structure and can be along the center line symmetrical fold of its vertical direction, wherein
The center line of the vertical direction of the mask body corresponds to the maximum width of the mask body, and the middle part is adjustable
Maximum width is 70-90mm, and the adjustable maximum width in first side and the second side is 45-55mm, the mask body
Width by the position of center line of vertical direction, both ends are successively decreased to the left and right, the width at both ends is minimum, is 45~55mm, the mask
The distance at body central line to both ends is 90~105mm；When the mask body is along the center line symmetrical fold of its vertical direction
Afterwards, the first side length that the position of center line of the mask body both ends and vertical direction is connected in first side is 70
~90mm connects the second side length of the position of center line of the mask body both ends and vertical direction in second side
For 70~90mm.
12. novel haze-proof mask according to claim 9, which is characterized in that the left and right ends of the mask body are equipped with
The length of lanyard, the lanyard is 100mm-120mm.
13. novel haze-proof mask according to claim 9, which is characterized in that the first side fitting face side
Middle part upper position is equipped with a sealing strip.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820096656.1U CN208002142U (en) | 2018-01-19 | 2018-01-19 | A kind of novel haze-proof mask |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820096656.1U CN208002142U (en) | 2018-01-19 | 2018-01-19 | A kind of novel haze-proof mask |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111938237A (en) * | 2020-09-01 | 2020-11-17 | 中山尚荣美容仪器有限公司 | Mask structure for lost speaker |
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2018
- 2018-01-19 CN CN201820096656.1U patent/CN208002142U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111938237A (en) * | 2020-09-01 | 2020-11-17 | 中山尚荣美容仪器有限公司 | Mask structure for lost speaker |
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