CN108379961A - Filter element and preparation method thereof - Google Patents
Filter element and preparation method thereof Download PDFInfo
- Publication number
- CN108379961A CN108379961A CN201810134594.3A CN201810134594A CN108379961A CN 108379961 A CN108379961 A CN 108379961A CN 201810134594 A CN201810134594 A CN 201810134594A CN 108379961 A CN108379961 A CN 108379961A
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- China
- Prior art keywords
- filter element
- filtering area
- strainer ontology
- rugosity
- material layer
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Classifications
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- 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
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
- B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
-
- 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
- B01D46/0002—Casings; Housings; Frame constructions
- B01D46/0016—Folded frame or housing constructions
-
- 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
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0407—Constructional details of adsorbing systems
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Separation Of Gases By Adsorption (AREA)
- Filtering Materials (AREA)
Abstract
The invention discloses a kind of filter elements, including：In the strainer ontology of rugosity, the strainer ontology has the mesh for breathing freely, and filtering area is configured as between the adjacent mesh, and the filtering area is equipped with sorbing material layer.The invention also discloses a kind of production methods making above-mentioned filter element.The present invention can not only improve the conversion ratio of filter element, but also reduce its windage and peculiar smell is avoided to generate.
Description
Technical field
The present invention relates to technical field of air purification, more particularly to a kind of filter element and a kind of making filtering list
The production method of member.
Background technology
Equipment of the air filter as purification air, has obtained extensive use.General air filter is to pass through
Filtration (also referred to as filter device) in its shell achievees the purpose that purify air to filtering out for air pollutants.By
There are the pollutant of Multiple components in air, for example, the suspended particulate substance of dust and PM2.5 etc. and the gaseous state of formaldehyde etc. it is dirty
Object is contaminated, therefore, in filtration would generally configure different types of filter element to remove the various pollutants in air.
Currently, the removal of the removal for gaseous pollutant, especially formaldehyde, typically uses adherency or fills out with absorption
Material, such as the filter element of active charcoal filter.Such filter element is mainly that honeycomb fills out carbon knot currently on the market
Structure, honeycomb glue carbon structure, grid glues carbon structure and folder charcoal four kinds of structures of cloth.The conversion ratio of the filter element of above-mentioned four class formation
Difference, and respectively have quality.Wherein important indicator of the conversion ratio as measures filtration unit uses " FCADR/ loads air quantity "
Formula is evaluated.The formula is reference《GB/T 18801-2008》The cleaning of appendix C (normative appendix) gaseous pollutant is empty
Tolerance test method is got, wherein " load air quantity " refers to air purifier when being run after carrying filter screen unit, air outlet
Air quantity；" FCADR " corresponding numerical value refers to " formaldehyde Clean air delivery rate "；And " conversion ratio " refers to FCADR numerical value and load wind
The ratio relation of amount can fully reflect formaldehyde absorbing effect of the filter screen unit under unit air volume.Separately below to above-mentioned four kinds
The problems of filter element of structure illustrates：
1, honeycomb fills out the filter element of carbon structure, since activated carbon is being used, is easily being displaced in transportational process, mutually touched
Generation carbon dust is hit, therefore, the conversion ratio of such filtering layer unit is relatively low, usually between 25%-30%.In addition, such is filtered
The windage of unit is generally also higher.
2, the filter element of the viscous carbon structure of honeycomb causes most of activated carbon filtering since its honeycomb intermediate gap is larger
When do not reach air, therefore, the conversion of such filter element filter is relatively low, usually between 25%-35%.
3, grid glues the filter element of carbon structure, and conversion ratio is usually between 30%-55%, although such filter element
Conversion ratio increase, but such filter element is typically that multilayer activated carbon is made to be laminated in structure setting, to also making
It is higher to obtain its windage.
4, folder charcoal cloth is different from the above-mentioned structure of three kinds of filter elements, therefore its conversion ratio is higher.However, the folder charcoal cloth is deposited
In insoluble Peculiar Smell currently on the market, and its phosphorus content is limited to material thickness, is not easy to adjust.
To sum up, current filter element, in particular for the filter element of the removal gaseous pollutants such as formaldehyde, or it is more or
It is few to have the following problems：High windage, active carbon amounts adherency few (in a limited space), peculiar smell, conversion ratio are low.Therefore, there is an urgent need for
A kind of new structural filter element is made effectively to overcome the above problem.
Invention content
To solve the above-mentioned problems, the present invention provides a kind of filter element, including：It is described in the strainer ontology of rugosity
Strainer ontology has the mesh for breathing freely, and is configured as filtering area between the adjacent mesh, the filtering area is equipped with
Sorbing material layer.
Preferably, the sorbing material layer is fixed on by bonding way on the filtering area.
Preferably, pass through adhesive sticker or Performance of Pressure Sensitive Adhesive between the sorbing material layer and the filtering area.
Preferably, the sorbing material layer is made of the adsorption particle being adhered on the filtering area.
Preferably, the adsorption particle further includes functional additive.
Preferably, the rugosity strainer ontology is in wavy or mountain peak shape.
In order to solve identical technical problem, the present invention also provides a kind of production methods of filter element, including walk as follows
Suddenly：
Strainer ontology is provided, which has mesh and be configured as filtering area between the adjacent mesh；
By the backfin of strainer ontology to form rugosity；
Sorbing material layer is coated on the filtering area in the strainer ontology of rugosity and is made coated with the sorbing material layer
The mesh of strainer ontology can breathe freely.
Preferably, described to be wrapped the step of coating sorbing material layer on the filtering area in the strainer ontology of rugosity
It includes：
Choose adsorption particle；
Adsorption particle is fixed on the filtering area in the strainer ontology of rugosity by bonding way to form adsorption material
The bed of material.
Preferably, the filtering that adsorption particle is fixed on to the strainer ontology in rugosity by bonding way
The step of in area to form sorbing material layer includes：
Adhesive sticker is coated on the filtering area in the strainer ontology of rugosity；
Adsorption particle is spilt on adhesive sticker.
Preferably, described to include the step of coating adhesive sticker on the filtering area in the strainer ontology of rugosity：
It is sprayed on the strainer ontology in rugosity or impregnates non-setting adhesive cement to form semi-finished product；
Semi-finished product are dried or are dried to non-setting adhesive cement and are in first valve state.
Preferably, it overturns drying or be dried to during non-setting adhesive cement is in first valve state by semi-finished product
The semi-finished product.
Preferably, after being adhered to adsorption particle on the filtering area in the strainer ontology of rugosity, to bonding
There is the strainer ontology of adsorption particle to carry out brushing operation, falls off from strainer ontology so as to adhere to unstable adsorption particle.
Preferably, it is gone forward in the filtering area of the strainer ontology of rugosity being adhered to adsorption particle, will be adsorbed
Particle be soaked in functional additive be easy in and drain or dry.
Preferably, it is described by strainer ontology backfin to form rugosity the step of include：
It determines and folds spacing and fold height；
According to the folding spacing and the fold height by strainer ontology backfin.
Compared with prior art, the beneficial effects of the present invention are：
1, the filter element of the embodiment of the present invention can increase filtering area due to its strainer ontology with rugosity
On sorbing material layer and air contact area, and air-flow and folded filter area form angle, improve filtering area with it is empty
Gas comes into full contact with, especially when the filter element be located at limited air it is interior when, the contact area with air is compared to other
The promotion that the filter element of structure can double, to be remarkably improved the conversion ratio of filter element with sorbing material layer cooperation, and
And it is verified, the conversion ratio of the filter element of the structure is up to 50%-69%.At the same time, since sorbing material layer is provided at
On filtering area, and filtering area is the region between adjacent mesh, this manner it is also possible to ensure that sorbing material layer will not be complete
The mesh of strainer ontology is covered, so that mesh has good gas permeability, to while reducing the windage of filter element
It is not likely to produce peculiar smell, with the comprehensive performance for promoting filter element.
2, the production method of the filter element of the embodiment of the present invention is by pressing the strainer ontology for defining filtering area
Folding processing, and coat sorbing material layer on the filtering area in the strainer ontology of rugosity and the sorbing material layer is made not cover
The mesh of strainer ontology reduced wind in this way, can both improve the strainer ontology in a limited space with the contact area of air
Resistance, so that the sorbing material layer of subsequent adhesion thereon can be contacted with air as far as possible in unit space, ventilation
Well, peculiar smell will not be caused to generate or go bad because of stuffy.At the same time, the collision between sorbing material layer can also be avoided
And it falls off.
Description of the drawings
Fig. 1 is the structural schematic diagram of the filter element along main view direction in the embodiment of the present invention；
Fig. 2 is the flow chart of the production method of filter element in the embodiment of the present invention.
Wherein, 100, filter element；1, strainer ontology；2, adsorption particle；3, frame.
Specific implementation mode
With reference to the accompanying drawings and examples, the specific implementation mode of the present invention is described in further detail.Implement below
Example is not limited to the scope of the present invention for illustrating the present invention.
Fig. 1 show the structure of the filter element 100 of the preferred embodiment of the present invention, which includes：In folding
The strainer ontology 1 of shape, the strainer ontology 1 have the mesh for breathing freely, are configured as filtering between the adjacent mesh
Area, the filtering area are equipped with sorbing material layer.
Above-mentioned filter element 100 can increase the absorption on filtering area due to its strainer ontology 1 with rugosity
The contact area of material layer and air, especially when the filter element 100 be located at limited air it is interior when, with connecing for air
Contacting surface accumulates the promotion that can be doubled compared to the filter element 100 of other structures, to be remarkably improved with sorbing material layer cooperation
The conversion ratio of filter element 100, and it is verified, and the conversion ratio of the filter element 100 of the structure is up to 50%-69%.With this
Simultaneously as sorbing material layer is provided on filtering area, and filtering area is the region between adjacent mesh, in this way,
May insure sorbing material layer will not completely obscured strainer ontology 1 mesh so that mesh have good gas permeability, to
It is not easy to produce peculiar smell while the windage for reducing filter element 100, with the comprehensive performance for promoting filter element 100.
In order to further increase the conversion ratio of filter element 100, illustratively, sorbing material layer cladding filtering can also be made
Area, fully to cover filtering area, to maximize the area of the sorbing material layer on strainer ontology 1, to improve adsorption efficiency.Into
One step, strainer ontology 1 can also be in wavy or mountain peak shape.It is of course also possible to add the support for fixing strainer ontology 1
Part, fixing device are designed to wavy or mountain peak shape the matched escapement with strainer ontology 1 so that peaks and troughs obtain
It fixes to effective, is deformed to avoid strainer ontology 1.
In order to ensure filter element 100 can be run steadily in the long term, illustratively, sorbing material layer can also be made to pass through viscous
The mode of connecing is fixed on filtering area, to avoid filter element 100 use or transportational process in due to falling off for sorbing material layer
Lead to the reduction of its conversion ratio, to improve user experience.And preferably, can be by not doing between sorbing material layer and filtering area
Glue or Performance of Pressure Sensitive Adhesive, to further increase the adhesive strength between sorbing material layer and filtering area.
Sorbing material layer in the present embodiment is mainly used for adsorbing the gaseous pollutant in air, therefore, in order to make absorption
Material layer can come into full contact with the gaseous pollutant in air, and illustratively, it includes adsorption particle that can make sorbing material layer
2, and the adsorption particle 2 also allows for investing on filtering area by adhesive sticker and pressure-sensitive adhesive, and it is adhered to the suction on filtering area
There is certain interval each other between attached particle 2, so that air can come into full contact with along the gap and adsorption particle 2, thus into
One step promotes the conversion ratio of filter element 100, and can also further decrease the windage of filtering unit 100, it is ensured that filtering is single
Member 100 not will produce peculiar smell.
Filter element 100 in the present embodiment uses the activated carbon of high adsorption rate, naturally it is also possible to select as needed
Such as silica gel absorber, activated alumina, silica gel absorber and one kind in organic resin adsorbent intermediate adsorption material or
The a variety of sorbing materials of person are combined.Preferably, in order to effectively filter the pollutant of the individual species in gaseous pollutant, example
Such as formaldehyde, can also be realized by adding functional additive in adsorption particle 2.Functionality is added in adsorption particle 2 to add
Add agent mode can there are many, and in order to simplify technique and reduce production cost, can by by activated carbon directly in function
Property additive solution, you can except impregnated in the solution of formaldehyde and drained or dried realize in air formaldehyde carry out
It effectively removes.
Carrier of the strainer ontology 1 as adsorption particle 2, not only needs proper amount of adsorption particle 2 steady in a long-term
Be fixed on strainer ontology 1 to ensure that filter element 100 can have higher conversion ratio for a long time, but also be necessary to ensure that suction
Attached particle 2 will not cover the mesh of strainer ontology 1, to avoid the gas permeability of filter element 100 is influenced.Therefore, in the present embodiment
Being needed according to actual product can be by the pore size control of strainer ontology 1 in 10~15 × 5~10mm, so that filter element 100 obtains
Preferable conversion ratio and gas permeability.In addition, the fold height of strainer ontology 1 usually requires to be adapted with local environment, and its
Content, conversion ratio and the windage situation of adsorption particle 2 can reach best.The folding of strainer ontology 1 in the present embodiment
Spacing also can need to control, in 6mm-20mm, so that filter element 100 obtains preferable performance, i.e., can both obtain according to actual product
Windage can be reduced again by obtaining higher conversion ratio, while can also avoid the problem that colliding to fall off between adsorption particle 2.
In order to keep strainer ontology 1 easy to process, illustratively, strainer ontology 1 can be selected such as plastics, paper material and
The material that metal material etc. is easily shaped makes.It is selected in the present embodiment in the case where ensureing strainer 1 mechanical property requirements of ontology
Aluminum work, to further reduce the cost.Further, it is also possible to add frame 3 in the outer peripheral edge of strainer ontology 1, become to avoid it
Shape.
The production method that Fig. 2 show above-mentioned filter element 100, the production method include the following steps：
S1, strainer ontology 1 is provided, which has mesh and be configured as filtering between the adjacent mesh
Area；
S2, by 1 backfin of strainer ontology to form rugosity；
S3, sorbing material layer is coated on the filtering area in the strainer ontology 1 of rugosity and makes to be coated with the sorbing material
The mesh of the strainer ontology 1 of layer can breathe freely.
Further, described to include the step of coating sorbing material layer on the filtering area in the strainer ontology 1 of rugosity：
Choose adsorption particle 2.
Adsorption particle 2 is as the material that can be adsorbed to the pollutant in air, the direct shadow of quality of absorption property
Ring the conversion ratio of filter element 100.Gaseous contamination in air filtering was mainly used for by filter element 100 in this present embodiment
Therefore object, especially formaldehyde need to select suitable material according to the filtering requirement of filter element 100 in the selection of adsorption particle 2
Expect the adsorption particle 2 made, such as activated carbon.
Adsorption particle 2 choose it is good after, adsorption particle 2 can be fixed on by bonding way to the strainer ontology in rugosity
To form sorbing material layer on 1 filtering area.
It is inhaled being fixed on adsorption particle 2 by bonding way on the filtering area in the strainer ontology 1 of rugosity with being formed
It can be carried out as follows during enclosure material layer.It is coated on the filtering area in the strainer ontology 1 of rugosity first
Adsorption particle 2 is then spread on by machine or manual mode on adhesive sticker by adhesive sticker, to realize adsorption particle 2 and strainer
Adhesion between ontology 1.It further, can be first during coating adhesive sticker in order to improve the adhesion intensity of adhesive sticker
It is sprayed on the strainer ontology 1 of rugosity or impregnates non-setting adhesive cement to form semi-finished product, then the semi-finished product are dried or dried
It is in first valve state to non-setting adhesive cement.And preferably, in order to allow adsorption particle 2 to be equably adhered to strainer ontology 1
On filtering area, semi-finished product are dried or be dried to during non-setting adhesive cement is in first valve state overturn the semi-finished product so that
Do not catch up with glue uniform adhesion on strainer ontology 1.It can be uniformly distributed in this way, can be absorption, without large-scale stratification,
To significantly improve the conversion ratio of filter element 100.
Further, it is also possible to after being adhered to adsorption particle 2 on the filtering area in the strainer ontology 1 of rugosity, to bonding
There is the strainer ontology 1 of adsorption particle 2 to carry out brushing operation, is taken off from strainer ontology 1 so as to adhere to unstable adsorption particle 2
It falls.It is of course also possible to go forward in the filtering area of the strainer ontology 1 of rugosity being adhered to adsorption particle 2, by adsorption particle 2
It is soaked in being easy of functional additive and drains or dry, so that adsorption particle 2 becomes functional adsorption particle 2.
It is understood that in order to be adapted to different products, it, can first really when carrying out backfin processing to strainer ontology 1
Surely spacing and fold height are folded, then according to the folding spacing and the fold height by 1 backfin of strainer ontology.
The conversion ratio and windage situation of filter element 100 in addition to being influenced by adsorption particle 2, also with 2 institute of adsorption particle
The carrier of attachment, i.e. strainer ontology 1 are related.Therefore, in the present embodiment in order to make filter element 100 not only have higher conversion
Rate, and there is preferable gas permeability, i.e., low windage needs to consider the size of adsorption particle 2, quantity and strainer ontology
The aperture of 1 mesh, so that the adsorption particle 2 for being adsorbed on the filtering area of strainer ontology 1 is as more as possible and will not cover mesh, with
Ensure the gas permeability of filter element 100.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and replacement can also be made, these improve and replace
Also it should be regarded as protection scope of the present invention.
Claims (14)
1. a kind of filter element, which is characterized in that including：In the strainer ontology of rugosity, the strainer ontology has for saturating
The mesh of gas, filtering area is configured as between the adjacent mesh, and the filtering area is equipped with sorbing material layer.
2. filter element as described in claim 1, which is characterized in that the sorbing material layer is fixed on institute by bonding way
It states on filtering area.
3. filter element as claimed in claim 2, which is characterized in that pass through between the sorbing material layer and the filtering area
Adhesive sticker or Performance of Pressure Sensitive Adhesive.
4. filter element as described in claim 1, which is characterized in that the sorbing material layer is by being adhered on the filtering area
Adsorption particle constitute.
5. filter element as described in claim 1, which is characterized in that the adsorption particle further includes functional additive.
6. filter element as described in claim 1, which is characterized in that the rugosity strainer ontology is in wavy or mountain peak
Shape.
7. a kind of production method of filter element, which is characterized in that include the following steps：
Strainer ontology is provided, which has mesh and be configured as filtering area between the adjacent mesh；
By the backfin of strainer ontology to form rugosity；
Sorbing material layer is coated on the filtering area in the strainer ontology of rugosity and makes the strainer coated with the sorbing material layer
The mesh of ontology can breathe freely.
8. the production method of filter element according to claim 7, which is characterized in that the strainer sheet in rugosity
The step of coating sorbing material layer, includes on the filtering area of body：
Choose adsorption particle；
Adsorption particle is fixed on the filtering area in the strainer ontology of rugosity by bonding way to form sorbing material layer.
9. the production method of filter element as claimed in claim 8, which is characterized in that described that adsorption particle is passed through bonding side
Formula is fixed on the filtering area in the strainer ontology of rugosity the step of to form sorbing material layer and includes：
Adhesive sticker is coated on the filtering area in the strainer ontology of rugosity；
Adsorption particle is spread on adhesive sticker.
10. the production method of filter element as claimed in claim 9, which is characterized in that the strainer sheet in rugosity
The step of coating adhesive sticker, includes on the filtering area of body：
It is sprayed on the strainer ontology in rugosity or impregnates non-setting adhesive cement to form semi-finished product；
Semi-finished product are dried or are dried to non-setting adhesive cement and are in first valve state.
11. the production method of filter element as claimed in claim 10, which is characterized in that semi-finished product are being dried or are being dried to
Non-setting adhesive cement overturns the semi-finished product during being in first valve state.
12. the production method of filter element as claimed in claim 8, which is characterized in that be adhered in folding by adsorption particle
After on the filtering area of stacked strainer ontology, the strainer ontology to being bonded with adsorption particle carries out brushing operation, so that adherency is not
Firm adsorption particle falls off from strainer ontology.
13. the production method of filter element as claimed in claim 8, which is characterized in that be adhered in folding by adsorption particle
The filtering area of stacked strainer ontology is gone forward, by adsorption particle be soaked in functional additive be easy in and drain or dry.
14. the production method of filter element as claimed in claim 7, which is characterized in that it is described by strainer ontology backfin with shape
Include at the step of rugosity：
It determines and folds spacing and fold height；
According to the folding spacing and the fold height by strainer ontology backfin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810134594.3A CN108379961A (en) | 2018-02-09 | 2018-02-09 | Filter element and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810134594.3A CN108379961A (en) | 2018-02-09 | 2018-02-09 | Filter element and preparation method thereof |
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| CN108379961A true CN108379961A (en) | 2018-08-10 |
Family
ID=63075582
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| CN201810134594.3A Pending CN108379961A (en) | 2018-02-09 | 2018-02-09 | Filter element and preparation method thereof |
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|---|---|---|---|---|
| CN102292127A (en) * | 2008-12-18 | 2011-12-21 | 3M创新有限公司 | Filter element utilizing shaped particle-containing nonwoven web |
| CN102548635A (en) * | 2009-09-30 | 2012-07-04 | 3M创新有限公司 | Active-particulate air filter having monolith primary filter and polishing filter |
| CN105126444A (en) * | 2015-06-29 | 2015-12-09 | 桐乡市健民过滤材料有限公司 | Wide-spectrum type smell-removal filter screen and preparation method thereof |
| CN107596792A (en) * | 2017-11-02 | 2018-01-19 | 无锡风正科技有限公司 | A kind of reticulated, open taste removal filter screen and its manufacture method |
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2018
- 2018-02-09 CN CN201810134594.3A patent/CN108379961A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102292127A (en) * | 2008-12-18 | 2011-12-21 | 3M创新有限公司 | Filter element utilizing shaped particle-containing nonwoven web |
| CN102548635A (en) * | 2009-09-30 | 2012-07-04 | 3M创新有限公司 | Active-particulate air filter having monolith primary filter and polishing filter |
| CN105126444A (en) * | 2015-06-29 | 2015-12-09 | 桐乡市健民过滤材料有限公司 | Wide-spectrum type smell-removal filter screen and preparation method thereof |
| CN107596792A (en) * | 2017-11-02 | 2018-01-19 | 无锡风正科技有限公司 | A kind of reticulated, open taste removal filter screen and its manufacture method |
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| 杨俊杰: "《制药工程原理与设备》", 31 July 2017, 重庆大学出版社 * |
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Application publication date: 20180810 |