CN106076011A - Air purifying filter core - Google Patents
Air purifying filter core Download PDFInfo
- Publication number
- CN106076011A CN106076011A CN201610581852.3A CN201610581852A CN106076011A CN 106076011 A CN106076011 A CN 106076011A CN 201610581852 A CN201610581852 A CN 201610581852A CN 106076011 A CN106076011 A CN 106076011A
- Authority
- CN
- China
- Prior art keywords
- layer
- filter core
- air purifying
- purifying filter
- per square
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
- B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
- B01D46/64—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series arranged concentrically or coaxially
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/01—Deodorant compositions
- A61L9/014—Deodorant compositions containing sorbent material, e.g. activated carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0001—Making filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
- B01D46/0032—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions using electrostatic forces to remove particles, e.g. electret filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
- B01D46/0036—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions by adsorption or absorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2209/00—Aspects relating to disinfection, sterilisation or deodorisation of air
- A61L2209/10—Apparatus features
- A61L2209/14—Filtering means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/91—Bacteria; Microorganisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/06—Polluted air
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Filtering Materials (AREA)
Abstract
The invention discloses a kind of air purifying filter core, including bottom casing play, melt-blown nonwoven layer of cloth, Electrostatic Absorption layer, adsorption layer and top framework layer, described melt-blown nonwoven layer of cloth, Electrostatic Absorption layer, adsorption layer and top framework layer are successively set on the casing play of bottom.In the present invention, air purifying filter core has outstanding filter effect, and filtering function is comprehensive, and preparation cost is substantially reduced, and can significantly alleviate the burden of consumer.
Description
Technical field
The present invention relates to air purification field, more particularly, it relates to a kind of air purifying filter core.
Background technology
Air purifying filter core on existing market presents polarization phenomenon in terms of production cost.The filter element that price is relatively low
Possess basic filtering dust function, but poor to filter effect degerming, micronic dust；The more comprehensive filter element of function produces into due to it
This is higher, causes price higher, brings a lot of puzzlements to consumer.Ensure to prepare relatively low one-tenth on the premise of filtering function is comprehensively
This filter element, thus alleviate consumer's burden and become the considerable problem of the industry.
Summary of the invention
In order to overcome the deficiencies in the prior art, it is an object of the invention to provide a kind of air purifying filter core, it has excellent
Elegant filter effect, filtering function is comprehensive, and preparation cost is substantially reduced, and can significantly alleviate the burden of consumer.
For solving the problems referred to above, the technical solution adopted in the present invention is as follows:
A kind of air purifying filter core, including bottom casing play, melt-blown nonwoven layer of cloth, Electrostatic Absorption layer, adsorption layer and top
Casing play, described melt-blown nonwoven layer of cloth, Electrostatic Absorption layer, adsorption layer and top framework layer are successively set on the casing play of bottom.
Preferably, described bottom casing play is nonwoven fabric of long fibers, and the grammes per square metre of described bottom casing play is 15-25g/,
Its thickness is 0.10-0.15mm.
Preferably, the grammes per square metre of described melt-blown nonwoven layer of cloth is 15-28g/, and its thickness is 0.15-0.2mm.
Preferably, the grammes per square metre of described Electrostatic Absorption layer is 60-70g/, and its thickness is 0.15-0.2mm.
Preferably, described top framework layer is prepared by PET material, and the grammes per square metre of described top framework layer is 60-70g/, its
Thickness is 0.15-0.2mm.
Preferably, the grammes per square metre of described adsorption layer is 80-350g/, and its thickness is 0.35-0.75mm.
Preferably, described adsorption layer includes active carbon layer.
Preferably, described adsorption layer also includes one layer of fibrous layer, and described active carbon layer is compounded on fibrous layer.
Preferably, described adsorption layer also includes that two fibre layers, described active carbon layer are compounded between two fibre layers.
Preferably, described active carbon layer is prepared by cocoanut active charcoal, and described active carbon layer mesh number is 20-80 mesh.
Compared to existing technology, the beneficial effects of the present invention is: in the present invention, bottom casing play and top framework layer ensure
While filter element overall structure stability, bottom casing play and top framework layer also have certain filter effect；Melt-blown nothing
Spin layer of cloth to be formed and slightly imitate filter course, it is possible to achieve the filtration of big dust particle；Electrostatic Absorption layer can be to charged particles such as dust
Form active adsorption；Adsorption layer can realize having taste, the decomposition of poisonous and various harmful gas and absorption, and then provides more
Comprehensively filter effect；In the present invention, filter cartridge construction is simple, it is not necessary to complicated machinery produces, and effectively reduces and produces into
This.
Accompanying drawing explanation
Fig. 1 is the structural representation of air purifying filter core in embodiment 1；
Fig. 2 is the structural representation of air purifying filter core in embodiment 2；
Wherein, 1 be bottom casing play, 2 be melt-blown nonwoven layer of cloth, 3 be Electrostatic Absorption layer, 4 be adsorption layer, 41 for fiber
Layer, 42 be active carbon layer, 5 be top framework layer.
Detailed description of the invention
With detailed description of the invention, the present invention is described in further detail below in conjunction with the accompanying drawings.
Embodiment 1
As it is shown in figure 1, air purifying filter core includes that bottom casing play 1, melt-blown nonwoven layer of cloth 2, electrostatic are inhaled in the present embodiment
Attached layer 3, adsorption layer 4 and top framework layer 5, melt-blown nonwoven layer of cloth 2, Electrostatic Absorption layer 3, adsorption layer 4 and top framework layer 5 are successively
It is arranged on the casing play 1 of bottom.
In present embodiment, bottom casing play 1 uses nonwoven fabric of long fibers, the grammes per square metre of bottom casing play 1 to be 15g/, its
Thickness is 0.10mm.Nonwoven fabric of long fibers is made up of cellosilk heat bonding, described cellosilk be parts by weight 55% core and
The suitcase cored structure of the crust composition of 45%, crust is prepared by polypropylene and titanium dioxide are melted, and core is that PET is melted to be prepared, institute
State cellosilk and make nonwoven fabric of long fibers by heat bonding.Nonwoven fabric of long fibers, through Corona discharge Treatment, has Electrostatic Absorption and makees
With, there is certain filtration.
The grammes per square metre of melt-blown nonwoven layer of cloth 2 is 15g/, and its thickness is 0.15mm.Melt-blown nonwoven layer of cloth 2 selects antimicrobial form to melt
Blown non-woven fabric, has certain bactericidal effect, promotes airfiltering effectiveness further.
The grammes per square metre of Electrostatic Absorption layer 3 is 70g/, and its thickness is 0.2mm.Electrostatic Absorption layer 3 cotton by electro static filtering and bear from
Subbundle is compound to be prepared, it is achieved that the absorption of the charged particles such as dust, while having good adsorption effect, can improve sky
Makings amount, promotes the increase of human respiratory system pulmonary oxygen absorbed, and promotes the increase of oxygen content in blood of human body.
The grammes per square metre of adsorption layer 4 is 80g/, and its thickness is 0.35mm.Adsorption layer 4 includes one layer of fibrous layer 41 and activated carbon
Layer 42.Active carbon layer 42 is compounded on fibrous layer 41.Fibrous layer 41 uses non-woven fabrics material.Active carbon layer 42 is by cocoanut active charcoal
Preparing, active carbon layer 42 mesh number is 20-60 mesh, and iodine number is 800 1800mg/g；Carbon tetrachloride adsorption rate (CTC) is 40%
110%；Specific surface area 590～1800/g.Cocoanut active charcoal can adsorb has taste, poisonous and various harmful gas in air
Formaldehyde in air, benzene homologues, TVOC, carbon monoxide, ammonia, ozone, chlorine etc. are particularly had the adsorption cleaning of uniqueness by body
And the ability of catalysis, filter effect can be promoted further.
The grammes per square metre of top framework layer 5 is 70g/, and its thickness is 0.2mm.Top framework layer 5 selects antibacterial flame-retardant PET material
Matter, while it has good supportive, has sterilization and fire-retardant characteristic concurrently, and anti-flammability can be that it uses offer preferably
Safety assurance.
Detecting the filter element obtained, it is at 300m3Disposable filtering efficiency under the conditions of the air quantity of/h, to PM2.5
Up to 93.2%, resistance is only 35Pa.It is installed on air conditioning for automobiles and tests, high to the filter efficiency of the 0.3 above microgranule of μm
Reach 85%.
Embodiment 2
As in figure 2 it is shown, air purifying filter core includes that bottom casing play 1, melt-blown nonwoven layer of cloth 2, electrostatic are inhaled in the present embodiment
Attached layer 3, adsorption layer 4 and top framework layer 5, melt-blown nonwoven layer of cloth 2, Electrostatic Absorption layer 3, adsorption layer 4 and top framework layer 5 are successively
It is arranged on the casing play 1 of bottom.
In present embodiment, bottom casing play 1 is nonwoven fabric of long fibers, and the grammes per square metre of bottom casing play 1 is 25g/, and it is thick
Degree is 0.15mm.Nonwoven fabric of long fibers is made up of cellosilk heat bonding, and described cellosilk is the core and 45% of parts by weight 55%
The suitcase cored structure of crust composition, crust is prepared by polyethylene and calcium carbonate are melted, and core is that PET is melted to be prepared, described fiber
Silk makes nonwoven fabric of long fibers by heat bonding.Nonwoven fabric of long fibers, through Corona discharge Treatment, has electrostatic adsorption, has
Certain filtration.
The grammes per square metre of melt-blown nonwoven layer of cloth 2 is 28g/, and its thickness is 0.2mm.Melt-blown nonwoven layer of cloth 2 selects antimicrobial form melt-blown
Non-woven fabrics, has certain bactericidal effect, it is ensured that airfiltering effectiveness.
The grammes per square metre of Electrostatic Absorption layer 3 is 70g/, and its thickness is 0.15mm.Electrostatic Absorption layer 3 is prepared by electro static filtering cotton,
Achieve the absorption of the charged particles such as dust, there is good adsorption effect.
The grammes per square metre of adsorption layer 4 is 350g/, and its thickness is 0.75mm.Adsorption layer 4 includes two fibre layers 41 and activated carbon
Layer 42, active carbon layer 42 is compounded between two fibre layers 41.Fibrous layer 41 uses cotton fibre layer.Active carbon layer 42 is by coconut husk
Activated carbon prepares, and active carbon layer 42 mesh number is 40-80 mesh, and iodine number is 800 1800mg/g；Carbon tetrachloride adsorption rate (CTC) is
40% 110%；Specific surface area 590～1800/g.Cocoanut active charcoal can adsorb having taste, poisonous and various have in air
Formaldehyde in air, benzene homologues, TVOC, carbon monoxide, ammonia, ozone, chlorine etc. are particularly had the absorption of uniqueness by evil gas
Purify and the ability of catalysis, filter effect can be promoted further.
The grammes per square metre of top framework layer 5 is 60g/, and its thickness is 0.15mm.Top framework layer 5 selects antibacterial flame-retardant PET material
Matter, while it has good supportive, has sterilization and fire-retardant characteristic concurrently, and anti-flammability can be that it uses offer preferably
Safety assurance.
Detecting the filter element obtained, it is at 300m3Disposable filtering efficiency under the conditions of the air quantity of/h, to PM2.5
Up to 93.2%, resistance is only 38Pa.It is installed on air conditioning for automobiles and tests, high to the filter efficiency of the 0.3 above microgranule of μm
Reach 85%.
It will be apparent to those skilled in the art that can technical scheme as described above and design, make other various
Corresponding change and deformation, and all these change and deformation all should belong to the protection domain of the claims in the present invention
Within.
Claims (10)
1. an air purifying filter core, it is characterised in that include bottom casing play, melt-blown nonwoven layer of cloth, Electrostatic Absorption layer, absorption
Layer and top framework layer, described melt-blown nonwoven layer of cloth, Electrostatic Absorption layer, adsorption layer and top framework layer are successively set on bottom bone
In rack-layer.
2. air purifying filter core as claimed in claim 1, it is characterised in that described bottom casing play is nonwoven fabric of long fibers,
The grammes per square metre of described bottom casing play is 15-25g/, and its thickness is 0.10-0.15mm.
3. air purifying filter core as claimed in claim 1, it is characterised in that the grammes per square metre of described melt-blown nonwoven layer of cloth is 15-
28g/, its thickness is 0.15-0.2mm.
4. air purifying filter core as claimed in claim 1, it is characterised in that the grammes per square metre of described Electrostatic Absorption layer is 60-70g/
, its thickness is 0.15-0.2mm.
5. air purifying filter core as claimed in claim 1, it is characterised in that described top framework layer is prepared by PET material, institute
The grammes per square metre stating top framework layer is 60-70g/, and its thickness is 0.15-0.2mm.
6. the air purifying filter core as described in any one of claim 1-5, it is characterised in that the grammes per square metre of described adsorption layer is 80-
350g/, its thickness is 0.35-0.75mm.
7. air purifying filter core as claimed in claim 6, it is characterised in that described adsorption layer includes active carbon layer.
8. air purifying filter core as claimed in claim 7, it is characterised in that described adsorption layer also includes one layer of fibrous layer, institute
State active carbon layer to be compounded on fibrous layer.
9. air purifying filter core as claimed in claim 7, it is characterised in that described adsorption layer also includes two fibre layers, institute
State active carbon layer to be compounded between two fibre layers.
10. air purifying filter core as claimed in claim 7, it is characterised in that described active carbon layer is prepared by cocoanut active charcoal,
Described active carbon layer mesh number is 20-80 mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610581852.3A CN106076011B (en) | 2016-07-21 | 2016-07-21 | Air purifying filter core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610581852.3A CN106076011B (en) | 2016-07-21 | 2016-07-21 | Air purifying filter core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106076011A true CN106076011A (en) | 2016-11-09 |
| CN106076011B CN106076011B (en) | 2019-03-19 |
Family
ID=57449732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610581852.3A Active CN106076011B (en) | 2016-07-21 | 2016-07-21 | Air purifying filter core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106076011B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106345180A (en) * | 2016-11-18 | 2017-01-25 | 广西金邦泰科技有限公司 | Dedusting and odor-removing filter cloth |
| CN114712940A (en) * | 2022-03-22 | 2022-07-08 | 南通康净环保科技有限公司 | Air purification filter element material and preparation process thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100946981B1 (en) * | 2009-05-13 | 2010-03-15 | (주)크린앤사이언스 | Filter material for air cleaning |
| CN102120115A (en) * | 2011-01-30 | 2011-07-13 | 江西亿菱实业有限公司 | Automotive air conditioning filtering material and preparation method thereof |
| CN203170118U (en) * | 2013-04-03 | 2013-09-04 | 东莞市海莎过滤器有限公司 | Double-effect filter material |
| CN105126448A (en) * | 2015-07-31 | 2015-12-09 | 深圳市爱品生电子科技有限公司 | Composite filter material for air purifier and moulding technology thereof |
| CN105586714A (en) * | 2016-03-17 | 2016-05-18 | 东莞市亿茂滤材有限公司 | High-static long fiber non-woven fabric and making method thereof |
| CN105617786A (en) * | 2016-03-29 | 2016-06-01 | 江苏深氧环保科技有限公司 | Filter element for wall-hung air-conditioner |
| CN105664650A (en) * | 2016-03-29 | 2016-06-15 | 江苏深氧环保科技有限公司 | Central air-conditioning return air outlet filtering mechanism |
| CN105771510A (en) * | 2016-03-29 | 2016-07-20 | 江苏深氧环保科技有限公司 | Filter element for ceiling air conditioner |
| CN206103527U (en) * | 2016-07-21 | 2017-04-19 | 陈映飞 | Air purification filter element |
-
2016
- 2016-07-21 CN CN201610581852.3A patent/CN106076011B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100946981B1 (en) * | 2009-05-13 | 2010-03-15 | (주)크린앤사이언스 | Filter material for air cleaning |
| CN102120115A (en) * | 2011-01-30 | 2011-07-13 | 江西亿菱实业有限公司 | Automotive air conditioning filtering material and preparation method thereof |
| CN203170118U (en) * | 2013-04-03 | 2013-09-04 | 东莞市海莎过滤器有限公司 | Double-effect filter material |
| CN105126448A (en) * | 2015-07-31 | 2015-12-09 | 深圳市爱品生电子科技有限公司 | Composite filter material for air purifier and moulding technology thereof |
| CN105586714A (en) * | 2016-03-17 | 2016-05-18 | 东莞市亿茂滤材有限公司 | High-static long fiber non-woven fabric and making method thereof |
| CN105617786A (en) * | 2016-03-29 | 2016-06-01 | 江苏深氧环保科技有限公司 | Filter element for wall-hung air-conditioner |
| CN105664650A (en) * | 2016-03-29 | 2016-06-15 | 江苏深氧环保科技有限公司 | Central air-conditioning return air outlet filtering mechanism |
| CN105771510A (en) * | 2016-03-29 | 2016-07-20 | 江苏深氧环保科技有限公司 | Filter element for ceiling air conditioner |
| CN206103527U (en) * | 2016-07-21 | 2017-04-19 | 陈映飞 | Air purification filter element |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106345180A (en) * | 2016-11-18 | 2017-01-25 | 广西金邦泰科技有限公司 | Dedusting and odor-removing filter cloth |
| CN106345180B (en) * | 2016-11-18 | 2018-09-04 | 广西金邦泰科技有限公司 | A kind of dedusting eliminates the unusual smell filter cloth |
| CN114712940A (en) * | 2022-03-22 | 2022-07-08 | 南通康净环保科技有限公司 | Air purification filter element material and preparation process thereof |
| CN114712940B (en) * | 2022-03-22 | 2023-09-26 | 南通康净环保科技有限公司 | Air purification filter element material and preparation process thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106076011B (en) | 2019-03-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2014042171A1 (en) | Disposable mask able to collect and adsorb radioactive organic iodine | |
| CN206549313U (en) | A kind of air filtration composite, mouth mask, air cleaner, industrial filter | |
| CN105771421A (en) | Non-woven composite material for filter respirator | |
| CN204816139U (en) | Tube -shape complex function filter screen for air purification | |
| CN210234280U (en) | Filtering protective fabric for mask | |
| CN107149815A (en) | A kind of antimicrobial filtering core | |
| KR101296615B1 (en) | Filter Complex for Deodorization and Dustproofing and Manufacturing Method thereof | |
| CN206103527U (en) | Air purification filter element | |
| CN106042514A (en) | Adhesive-bonded fabric for medical gauze masks | |
| CN105996230A (en) | Super-high-moisture-absorption-and-filtration medical protective mask | |
| CN205492690U (en) | Environmental protection gauze mask that contains high -efficient antifog haze of polylactic acid | |
| CN112874076A (en) | Nanofiber medical protective clothing material and preparation method thereof | |
| CN107097495A (en) | A kind of disposable breathing mask fabric and preparation method thereof | |
| CN204259882U (en) | Comfort type protective mask | |
| CN106076011B (en) | Air purifying filter core | |
| CN205432232U (en) | Gauze mask is with combination filter media | |
| CN106376992A (en) | Agricultural protective mask material | |
| CN209769070U (en) | Medical active carbon fiber antibacterial mask | |
| CN205517121U (en) | Air conditioner active carbon filter screen | |
| CN204763519U (en) | Can dismantle dust mask | |
| CN105056625B (en) | A kind of mask filtering layer filtrate and mask | |
| CN206103516U (en) | Air purification filter core | |
| CN204763518U (en) | Prevent dust mask of static | |
| CN107028250A (en) | Antibacterial mask filter disc | |
| CN203327997U (en) | Negative ion mask |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |