CN104271215A - Filter medium having dual-layer structure consisting of high-density layer and low-density layer - Google Patents
Filter medium having dual-layer structure consisting of high-density layer and low-density layer Download PDFInfo
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- CN104271215A CN104271215A CN201380024228.8A CN201380024228A CN104271215A CN 104271215 A CN104271215 A CN 104271215A CN 201380024228 A CN201380024228 A CN 201380024228A CN 104271215 A CN104271215 A CN 104271215A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
-
- 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
- B01D46/54—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
- B01D46/546—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms using nano- or microfibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
- B01D39/2003—Glass or glassy material
- B01D39/2017—Glass or glassy material the material being filamentary or fibrous
-
- 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
-
- 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
- B01D46/54—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/02—Types of fibres, filaments or particles, self-supporting or supported materials
- B01D2239/025—Types of fibres, filaments or particles, self-supporting or supported materials comprising nanofibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/065—More than one layer present in the filtering material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/12—Special parameters characterising the filtering material
- B01D2239/1208—Porosity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2275/00—Filter media structures for filters specially adapted for separating dispersed particles from gases or vapours
- B01D2275/10—Multiple layers
Abstract
The present invention relates to the manufacture of a filter medium which has a dense layer and a bulky layer rigidly combined together without using a separate coupling member, and which exhibits low pressure loss and high collecting efficiency, by: mixing 55 to 75 parts by weight of ultrafine fibers having a diameter of 0.1 to 1.0 mum (hereinafter referred to as microfibers), 10 to 25 parts by weight of ultrafine fibers having a diameter of 1.0 to 5.0 mum (hereinafter referred to as fine fibers), 1.5 to 2.5 parts by weight of a filter composition consisting of 0 to 30 parts by weight of glass fibers, and 97.5 to 98.5 parts by weight of water; manufacturing a slurry (hereinafter referred to as a filter slurry); then spraying the manufactured filter slurry until achieving a headbox concentration of 0.05 to 1.0 parts by weight so as to form a dense layer; and spraying the filter composition onto the upper portion of the dense layer until achieving a headbox concentration of 0.03 to 0.06 parts by weight so as to form a dual-layer structure, and heating same.
Description
Technical field
The present invention relates to the double-deck filter medium with high concentration and low concentration, relate to a kind of filter medium in more detail, by (following by the thin short fiber of super of the diameter of 0.1 ~ 1.0 μm, be called superfine fibre) 55 ~ 75 % by weight, the thin short fiber of super of the diameter of 1.0 ~ 5.0 μm is (following, be called microfibre) 10 ~ 25 % by weight, the filter constituent 1.5 ~ 2.5 % by weight of glass fibre 0 ~ 35 % by weight formation mixes with the water of 97.5 ~ 98.5 % by weight, manufacture mud (following, be called and filter mud) after, the filtration mud of manufacture is sprayed with the concentration of head case concentration 0.05 ~ 1.0 quality % and forms close bed, and, spray described filter constituent on the top of described close bed with the concentration of head case concentration 0.03 ~ 0.06 quality % and heat after forming double-decker, thus, without the need to other bonded block, namely close bed and thick layer can be made firmly to combine, and the pressure loss is little, the filter medium that collection efficiency is high.
Background technology
Filter medium is the device filtering fine dust and foreign matter, and it is installed on the passage flowing into and flow out air, makes internally to flow into the clean air through filtering, to keep the device of the dust-proof environment of free from dust.Especially, along with industrial expansion, the attention rate of environmental pollution and health is more and more higher, thus this type of filter medium is used in the various fields such as semi-conductor industry, air cleaner, electronic industry and scavenging machine, and, be installed on particular space, the clean air filtered is flowed into particular space, to prevent to be reduced cleaning efficiency by dust, and, reduce the fraction defective of apparatus and product.
This type of filter medium uses nonwoven cloth filter material, filter paper and air cleaner etc. usually, filter paper by thinner and closely single layer structure formed, its structure has the advantage of the collection efficiency brilliance of the dust in filtered air, therefore, also there is the insufficient space of the dust of storage trapping and the shortcoming often changed.
Further, air cleaner, according to the particle diameter of fiber or efficiency of dust collection, is divided into thick dirt filter, middle performance filter, high-performance filter, efficient (HEPA) filter, ultra high efficiency (ULPA) filter etc.
Especially, high efficiency particulate air filter is to remove the filter that particle diameter is the fine dust of less than 0.3 μm, the superfine fiber being less than 1 μm by diameter is formed, there is the advantage of the fine dust of the particle diameter 0.3 μm that can trap more than 99.97%, therefore, the place of high-precision sanitary installation is needed to install in aviation association, semiconductor, drugmaker, hospital etc.
But high efficiency particulate air filter is formed by single layer structure identically with filter paper, therefore, there is dust storage amount little, reduce the problem of collection efficiency.
Thus, carrying out various with multilayer structure formation high efficiency particulate air filter, and increasing collection efficiency and dust storage quantifier elimination.
Filter is formed thick floor from air inflow side to air outflow side by No. 10-1000366th, Ebrean Registered Patent (title: air cleaner filter) in order, intermediate layer, close bed and thin layer 4 Rotating fields, thus, can evenly maintain fibrolaminar space and the dust collection efficiency improved in the air of filtration and storage amount, but, in order to each fibrolaminar space of interfacial agent blocking used in conjunction with each layer, therefore, there is the problem of the lost of life, collection efficiency reduction.
And, in No. 10-0405318th, Ebrean Registered Patent (title: air cleaner filter medium and its manufacture method), filter is formed by close bed, intermediate layer and thick layer 3-tier architecture, by solder bond between each layer, therefore, can not occur by the phenomenon in resin binder blocking space, and reduce the advantage of life-span or reduction collection efficiency, but this type of filter is in order to perform the welding procedure between each layer, its complex procedures, and increase manufacturing expense, destroy fiber prototype.
As above-mentioned, existing have the double-decker of thick layer and close bed and thick layer, the existing filter medium of the sandwich constructions such as the 3-tier architecture of intermediate layer and close bed, be each layer stacked with solid-phase after, bonded, therefore, need to perform independent device and the operations such as needing machine, resin binder, interfacial agent and welding, this type of mode is not only out of shape and is destroyed prototype and the originality matter of fiber, and manufacture process is loaded down with trivial details.
In order to overcome problems, just to carry out by the fiber that forms close bed and thick layer with aqueous stacked after, dehydration and sclerosis, fiber between each layer is interlocked at contact surface, even and if do not perform other contact instrument and operation, also make collection efficiency outstanding, and, the research of the filter that Coating combination is firm.
Fig. 1 is for representing the sectional view of the high efficiency particulate air filter recorded in No. 20070163218th, existing US publication (title: have double-deck high efficiency particulate air filter).
The high efficiency particulate air filter (100) of Fig. 1 is (following, existing high efficiency particulate air filter) by the fine bisque (101) of thickness with diameter 2.0 ~ 8.0 μm and 50 ~ 625 μm, there is the thickness of diameter 0.2 ~ 0.8 μm and 125 ~ 750 μm and the high-efficient filter stratum reticulare (103) formed in the bottom of described fine bisque (101), thickness with 3 ~ 20% of integral thickness is formed, described fine bisque (101) with to be formed between high-efficient filter stratum reticulare (103) and the transition region (105) that fine bisque (101) mixes with high-efficient filter stratum reticulare (103) and formed is formed.
And, existing high efficiency particulate air filter (100), the transition region (105) be made up of the mixture of high-efficient filter stratum reticulare (103) and fine bisque (101) is positioned between high efficiency filter layer (103) and fine bisque (101), and in conjunction with high-efficient filter stratum reticulare (103) and fine bisque (101), thus, do not use the bonded block that resin binder etc. is other, can pass through transition region (105) firm combining yet.
And, existing high efficiency particulate air filter (100) transition region (105) makes high-efficient filter stratum reticulare (103) firmly be combined with fine bisque (101), and, fold is formed at high efficiency particulate air filter material internal, therefore, 2 layers are not separated when carrying out crimping process.
Further, existing high efficiency particulate air filter (100) tool has the following advantages: inter-layer bonding force increases, and improves collection efficiency, also improves dust saturation.
But, existing high efficiency particulate air filter (100) is in order to be separated fine bisque (101) and high-efficient filter stratum reticulare (103) and stacked, and during manufacture, the fiber of fine bisque and the fiber of high-efficient filter stratum reticulare are at 2 head case separation injections, therefore, manufacture complicated, expense increases.
Summary of the invention
the problem that invention will solve
The present invention is in order to solve the problem, a kind of filter medium is provided, the filter constituent be made up of the superfine fibre 55 ~ 75 % by weight of diameter 0.1 ~ 1.0 μm, the microfibre 10 ~ 25 % by weight of diameter 1.0 ~ 5.0 μm, milled glass fiber 0 ~ 35 % by weight is sprayed with different head case concentration respectively, and form the double-decker of stacked close bed and thick layer, thus, not only the pressure loss is low, and, collection efficiency and dust saturation also high.
And, the other problem that the present invention will solve is, carry out filter composition nitride layer when folding technique, after being sprayed above filter screen by the aqueous filtration mud that the water of filter constituent 1.5 ~ 2.5 % by weight and 97.5 ~ 98.5 % by weight carries out stirring, perform dehydration and hardening process, thus, without the need to the device that resin binder and interfacial agent etc. are other, also inter-layer bonding force can be improved, and, do not destroy or the space of deformable filter constituent and prototype.
the scheme of dealing with problems
In order to solve the problem, scheme of dealing with problems of the present invention is, a kind of filter medium is provided, as by the superfine fibre less than more than 55 % by weight to 75 % by weight by the diameter of 0.1 ~ 1.0 μm, the microfibre less than more than 10 % by weight to 25 % by weight of the diameter of 1.0 ~ 5.0 μm, the milled glass fiber of the diameter of more than 5 μm is greater than 0 % by weight and is less than or equal to the 35 % by weight filters composition nitride layer poststacks formed, filter the filter medium of fine dust and dust, it is characterized in that, be made up of close bed and thick layer, the filtration mud of described close bed by described filter constituent less than more than 1.5 % by weight to 2.5 % by weight is dissolved with water less than more than 97.5 % by weight to 98.5 % by weight and stirs, spray with the concentration of head case concentration 0.05 ~ 1.0 quality % and formed, described thick layer is by being formed described filtration mud to the top injection of described close bed with the concentration of head case concentration 0.03 ~ 0.06 quality %.
Further, preferably, the filtration mud forming described close bed and described thick layer with aqueous stacked after, make the fiber forming described close bed and described thick layer interlaced through dehydration and hardening process.
Further, preferably, described filter medium has 60 ~ 120g/m
2weight and the thickness of 0.3 ~ 1.0mm.
Further, preferably, described filtration mud adds acid or the dispersant with PH2 ~ 4 concentration.
the effect of invention
According to the present invention with described problem and solution, close bed and thick layer are stacked with the injection of different head case concentration respectively, thus the pressure loss reduces, and improves collection efficiency.
Further, according to the present invention, filter is formed by double-decker, and therefore, dust saturation increases, and improves the life-span of filter.
According to the present invention, without the need to other bonded block, also can improve inter-layer bonding force, and, fibrolaminar space and prototype indeformable, thus, add collection efficiency.
Further, according to the present invention, the raw material of thick layer uses the fiber comparing the thicker diameter of close bed, and cost-saving.
Accompanying drawing explanation
Fig. 1 is for representing the sectional view of the high efficiency particulate air filter recorded in No. 20070163218th, existing US publication (title: have double-deck high efficiency particulate air filter);
Fig. 2 represents the concept map containing composition being applicable to the filter constituent of one embodiment of the invention;
Fig. 3 is the sectional view of the filter medium representing one embodiment of the invention;
Fig. 4 is the flow chart of the manufacture process of the filter medium representing Fig. 3.
Detailed description of the invention
Hereinafter, with reference to the accompanying drawings of one embodiment of the invention.
Fig. 2 represents the concept map containing composition being applicable to the filter constituent of one embodiment of the invention.
The filter constituent (30) of Fig. 2 be the filter medium being applicable to one embodiment of the invention fibre composition, (following by the thin short fiber of the super of the diameter of 0.1 ~ 1.0 μm (31), be called superfine fibre) less than more than 55 % by weight to 75 % by weight, microdenier staple (33) (hereinafter referred to as the microfibre) less than more than 10 % by weight to 25 % by weight of the diameter of 1.0 ~ 5.0 μm, diameter be that the milled glass fiber less than more than (35) 0 % by weight to 35 % by weight of more than 5 μm is formed.
Superfine fibre (31) and microfibre (33) are staple glass fibre, by spring silicate glass, the E glass (alkali-free glass) that there is acid proof C glass, there is electrical insulating property, formed for reducing at least one or more than at least 2 staple glass fibres mixed in the low boron glass of boron pollution and silex glass.
Further, the superfine fibre of diameter of superfine fibre (31) for having 0.1 ~ 1.0 μm, and, because diameter is little, the collection efficiency of the filter medium (1) of following Fig. 3 is increased.
And, superfine fibre (31) is made up of less than more than 55 % by weight to 75 % by weight of filter constituent (30), if when the amount of superfine fibre (31) is less than 55 % by weight, the character of superfine fibre (31) can be reduced, make collection efficiency low, if when amount is more than 75 % by weight, the amount of superfine fibre (31) will be improved, and increase the pressure loss.
Milled glass fiber (35) for comparing superfine fibre (31) and the thicker glass fibre of microfibre (33), preferably, for having the glass fibre of diameter of more than 5 μm.
Further, milled glass fiber (35) is formed by less than more than 0 % by weight to 35 % by weight.
As described above, be applicable to filter constituent (30) of the present invention mixing and there is the superfine fiber (31) of different-diameter, microfibre (33) and milled glass fiber (35) respectively, collection efficiency is increased.
Fig. 3 is the sectional view of the filter medium representing one embodiment of the invention.
The filter medium (1) of Fig. 3 is stacked after being sprayed with head case concentration different respectively by the filter constituent (30) of Fig. 2, thus, filters the device of fine dust and the dust flowed into from outside.
And, the close bed (3) that filter medium (1) is sprayed with head case concentration 0.05 ~ 1.0 quality % by the filter constituent (30) of above-mentioned Fig. 2 and formed, the top being formed at described close bed (3), and the thick layer (5) that described filter constituent (30) sprays with head case concentration 0.03 ~ 0.06 quality % and formed is formed.
Thick layer (5) is the aqueous filtration mud that the filter constituent less than more than (30) 1.5 % by weight to 2.5 % by weight of Fig. 2 is mixed with water less than more than 97.5 % by weight to 98.5 % by weight and stirred, after spraying above filter screen with head case concentration 0.03 ~ 0.06 quality %, the filter medium manufactured through dehydration and sclerosis.
Further, thick layer (5) sprays with head case concentration 0.03 ~ 0.06 quality % and is formed, and therefore, diameter is compared close bed (3) and formed significantly, thus, be arranged at the passage that air flows into, and filter diameter dust or foreign matter significantly.
Close bed (3) will filter after mud sprays above filter screen with head case concentration 0.05 ~ 1.0 quality %, the filter medium manufactured after dehydration and sclerosis.
Further, close bed (3) compares with thick layer (5), and head case concentration is high, and diameter is formed little, thus, fine dust and dust that thick layer (5) can not filter can be filtered.
With reference to Fig. 4, the manufacture process of filter medium is described.
Fig. 4 is the flow chart of the manufacture process of the filter medium representing Fig. 3.
Manufacture filter constituent (30).Now, as described in Figure 2, filter constituent (30) is made up of (S10) superfine fibre less than more than (31) 55 % by weight to 75 % by weight, microfibre less than more than (33) 10 % by weight to 25 % by weight, milled glass fiber less than more than (35) 0 % by weight to 35 % by weight.
In the water of lysate, add acid (hydrochloric acid) or the dispersant of the concentration of PH2 ~ 4, put into pulper and manufacture dispersion liquid (S20).
After the filter constituent (30) prepared by step 10 is put into pulper (Pulper), manufacture the filtration mud stirring the dispersion liquid manufactured by step 20 (S20).Now, filter mud to be made up of the filter constituent (30) of dispersion liquid and 1.5 ~ 2.5 % by weight of less than more than 97.5 % by weight to 98.5 % by weight.
By the filtration mud manufactured by step 30 (S30) each head case carry out water-soluble after, spray on filter screen with the concentration of head case concentration 0.03 ~ 0.06 quality %, formed close bed (3) (S40).
Further, spraying filtering mud above the filtration mud sprayed by step 40 (S40) with the concentration of head case concentration 0.05 ~ 1.0 quality %, making to form thick layer (S50) on close bed (3) top.
After being dewatered by the filtration mud stacked by step 50 (S50), 120 DEG C of heating 30 minutes, to remove the moisture filtering and comprise in mud, thus, manufacture filter medium (1) (S60) of one embodiment of the invention.
As the filter medium (1) of above-mentioned manufacture, close bed (3) and thick layer (5) with aqueous stacked after, through overcure, fiber is interlocked, and without the need to other adhesive means, close bed (3) and thick layer (5) firm combining can either be made.
Further, although not shown, after step 50 (S50), also adhesive-dipping or spray technology can be comprised, and be convenient to carry out pleating (Pleating) by aft-loaded airfoil, this type of technique is common technology in the filter medium manufacture of filter, and therefore, the description thereof will be omitted.
Below, more described in detail the filter medium (1) of the filter of one embodiment of the invention by embodiment.Further, the following examples are to illustrate, and not by the restriction of interest field of the present invention.
Table 1 for represent be applicable to the filter constituent of embodiment and comparative example containing composition.
[table 1]
* described content is % by weight
The catalogue number(Cat.No.) 1 (FC1) of described table 1 is the filter constituent (30) be made up of the superfine fibre (31) of the diameter 0.6 μm of 70 % by weight, the microfibre (33) of the diameter 2.70 μm of 20 % by weight, the milled glass fiber (35) of 10 % by weight.
Further, the catalogue number(Cat.No.) 2 (FC2) of table 1 is the filter constituent (30) be made up of the superfine fibre (31) of the diameter 0.5 μm of 70 % by weight, the microfibre (33) of the diameter 2.70 μm of 20 % by weight, the milled glass fiber (35) of 10 % by weight.
Further, the catalogue number(Cat.No.) 3 (FC3) of table 1 is the filter constituent (30) be made up of the superfine fibre (31) of the diameter 0.6 μm of 76 % by weight, the microfibre (33) of the diameter 2.70 μm of 16 % by weight, the milled glass fiber (35) of 8 % by weight.
Further, the catalogue number(Cat.No.) 4 (FC4) of table 1 is the filter constituent be made up of the superfine fibre (31) of the diameter 0.5 μm of 58 % by weight, the microfibre (33) of the diameter 2.70 μm of 28 % by weight, the milled glass fiber of 14 % by weight.
Further, the catalogue number(Cat.No.) 5 (FC5) of table 1 is the filter constituent (30) be made up of the superfine fibre (31) of the diameter 0.6 μm of 75 % by weight, the microfibre (33) of the diameter 2.70 μm of 20 % by weight, the milled glass fiber (35) of 5 % by weight.
Further, the catalogue number(Cat.No.) 6 (FC6) of table 1 is the filter constituent (30) be made up of the superfine fibre (31) of the diameter 0.5 μm of 70 % by weight, the microfibre (33) of the diameter 2.70 μm of 25 % by weight, the milled glass fiber (35) of 5 % by weight.
Table 2 below represents other embodiments and the comparative example that are suitable for the filter medium (1) of the filter constituent of described table 1.
[table 2]
* described content is % by weight
Be described with reference to table 2, the close bed (3) 47.5 % by weight that embodiment 1 is formed by catalogue number(Cat.No.) 1 (FC1), the thick layer (5) 47.5 % by weight formed by catalogue number(Cat.No.) 2 (FC2), adhesive 5% are formed, close bed (3) is formed by head case concentration 0.07 quality %, and thick layer (5) is formed by head case concentration 0.07 quality %.
The close bed (3) 47.55 % by weight that embodiment 2 is formed by catalogue number(Cat.No.) 1 (FC1), the thick layer (5) 47.5 % by weight formed by catalogue number(Cat.No.) 2 (FC2), adhesive 5% are formed, close bed (3) is formed by head case concentration 0.07 quality %, and thick layer (5) is formed by head case concentration 0.04 quality %.
The close bed (3) 47.55 % by weight that embodiment 3 is formed by catalogue number(Cat.No.) 3 (FC3), the thick layer (5) 47.5 % by weight formed by catalogue number(Cat.No.) 4 (FC4), adhesive 5% are formed, close bed (3) is formed by head case concentration 0.07 quality %, and thick layer (5) is formed by head case concentration 0.04 quality %.
-experimental example 1: the pressure loss is tested
Pressure loss test utilizes TSI society 8130Model testing machine, determines at effective area 100cm
2the pressure loss of filter medium when ventilating with face velocity 5.3cm/sec.
-experimental example 2:DOP (DioctylPhthalate) collection efficiency is tested
TSI society 8130Model is utilized to determine at effective area 100cm
2filter medium when the air of the DOP (dioctyl phthalate) comprising 0.3 μm of size is ventilated with face velocity 5.3cm/sec, from upper reaches and dirty DOP transmitance.
-experimental example 3: evaluate dispersed
Dispersiveness is by visually observing after the raw mixture 1L in collection head case.Now, fiber do not lump or in conjunction with time, judge favorable dispersibility, mark with O during favorable dispersibility, time bad with × mark.
-experimental example 4: weight
Extract effective area 100cm
2filter medium 10 after, determine average weight.
-experimental example 5: thickness
Extract effective area 100cm
2filter medium 10 after, utilize Thickness measuring machine to measure the mean value of full width of 10 filter mediums extracted.
Table 3 represents the embodiment of example 1 to 5 mensuration and the detected value of comparative example by experiment.
[table 3]
What be differently suitable for head case concentration as table 3 has double-deck embodiment 1 to embodiment 3, compares, reduces the pressure loss, not only prevent from reducing collection efficiency, and guarantee dispersiveness with comparative example 1 to the comparative example 6 formed by single layer structure.
Further, when embodiment 1 to embodiment 3 compares with comparative example 1 to comparative example 6, weight and the not obvious increase of thickness.
Claims (4)
1. a filter medium, as by by 0.1 ~ 1.0 μm the superfine fibre less than more than 55 % by weight to 75 % by weight of diameter, the microfibre less than more than 10 % by weight to 25 % by weight of the diameter of 1.0 ~ 5.0 μm, the diameter of more than 5 μm milled glass fiber be greater than 0 % by weight and be less than or equal to 35 % by weight filters formed and form nitride layer poststack, filter the filter medium of fine dust and dust, it is characterized in that
Described filter medium is made up of close bed and thick layer, wherein, the filtration mud of described close bed by described filter constituent less than more than 1.5 % by weight to 2.5 % by weight is dissolved with water less than more than 97.5 % by weight to 98.5 % by weight and stirs, spray with the concentration of head case concentration 0.05 ~ 1.0 quality % and formed, described thick layer is by being formed described filtration mud to the top injection of described close bed with the concentration of head case concentration 0.03 ~ 0.06 quality %.
2. filter medium according to claim 1, is characterized in that,
The filtration mud forming described close bed and described thick layer with aqueous stacked after, make the fiber forming described close bed and described thick layer interlaced through dehydration and hardening process.
3. filter medium according to claim 1 and 2, is characterized in that,
Described filter medium has 60 ~ 120g/m
2weight and the thickness of 0.3 ~ 1.0mm.
4. filter medium according to claim 3, is characterized in that:
Described filtration mud adds acid or the dispersant with PH2 ~ 4 concentration.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020120048454A KR101201759B1 (en) | 2012-05-08 | 2012-05-08 | Filter medium of two-layered structure with high and law conentration |
| KR10-2012-0048454 | 2012-05-08 | ||
| PCT/KR2013/000737 WO2013168883A1 (en) | 2012-05-08 | 2013-01-30 | Filter medium having dual-layer structure consisting of high-density layer and low-density layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104271215A true CN104271215A (en) | 2015-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380024228.8A Pending CN104271215A (en) | 2012-05-08 | 2013-01-30 | Filter medium having dual-layer structure consisting of high-density layer and low-density layer |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR101201759B1 (en) |
| CN (1) | CN104271215A (en) |
| WO (1) | WO2013168883A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101323181B1 (en) * | 2013-01-28 | 2013-10-30 | 주식회사 엔바이오니아 | Laminating apparatus of fiber layer and method of filter medium with multi-layer therefor |
| KR101668634B1 (en) * | 2013-11-12 | 2016-10-24 | 주식회사 엔바이오니아 | heat resistance cartridge filter and manufacturing method therefor |
| KR101633616B1 (en) * | 2013-12-18 | 2016-06-27 | 주식회사 엔바이오니아 | positively charged filter medium of two-layered structure including powder activecarbon and activecarbon fiber, silver nanoparticles and manufacturing mtethod therefor |
| KR101619763B1 (en) * | 2014-03-25 | 2016-05-11 | 주식회사 엔바이오니아 | pore filter media of two-layered having electropositive charge and method therefor |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1251147A (en) * | 1997-03-20 | 2000-04-19 | 格兰尼特股份公司 | Method for preparing alkaline solutions contg. aromatic polymer |
| KR20010008271A (en) * | 2000-11-20 | 2001-02-05 | 롤프 에취, 켈러, 카즈노리 이마무라 | Engine intake air filtering and It's Manufacturing method |
| JP2003047811A (en) * | 2001-08-08 | 2003-02-18 | Toyobo Co Ltd | Electret filter medium and method for manufacturing the same |
| JP2005319347A (en) * | 2004-05-06 | 2005-11-17 | Kuraray Co Ltd | Filter medium for filter and filter |
| KR100678338B1 (en) * | 2005-07-15 | 2007-02-05 | (주)크린앤사이언스 | Filter element for cleaning air and process for preparing the same |
| US20070163218A1 (en) * | 2005-12-22 | 2007-07-19 | Lydall, Inc. | Composite dual layer HEPA filter |
| CN102188856A (en) * | 2010-03-12 | 2011-09-21 | 韩国energy技术研究院 | Deep-layer filtering type air filtering medium |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07102293B2 (en) * | 1989-03-24 | 1995-11-08 | 北越製紙株式会社 | Glass fiber filter paper for high performance air filter and method for producing the same |
| KR20030015646A (en) * | 2001-08-17 | 2003-02-25 | 황범수 | Non-woven air filter comprising of anion-generating materials and the method of thereof |
| KR100675945B1 (en) | 2005-04-21 | 2007-01-30 | (주)대보휄트 | The media of air cleaner element for vehicle and method of thereof |
| KR100902153B1 (en) | 2007-08-08 | 2009-06-10 | (주)대보휄트 | Air cleaner filter for vehicle using activated carbon fiber and the method thereof |
-
2012
- 2012-05-08 KR KR1020120048454A patent/KR101201759B1/en active IP Right Grant
-
2013
- 2013-01-30 WO PCT/KR2013/000737 patent/WO2013168883A1/en active Application Filing
- 2013-01-30 CN CN201380024228.8A patent/CN104271215A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1251147A (en) * | 1997-03-20 | 2000-04-19 | 格兰尼特股份公司 | Method for preparing alkaline solutions contg. aromatic polymer |
| KR20010008271A (en) * | 2000-11-20 | 2001-02-05 | 롤프 에취, 켈러, 카즈노리 이마무라 | Engine intake air filtering and It's Manufacturing method |
| JP2003047811A (en) * | 2001-08-08 | 2003-02-18 | Toyobo Co Ltd | Electret filter medium and method for manufacturing the same |
| JP2005319347A (en) * | 2004-05-06 | 2005-11-17 | Kuraray Co Ltd | Filter medium for filter and filter |
| KR100678338B1 (en) * | 2005-07-15 | 2007-02-05 | (주)크린앤사이언스 | Filter element for cleaning air and process for preparing the same |
| US20070163218A1 (en) * | 2005-12-22 | 2007-07-19 | Lydall, Inc. | Composite dual layer HEPA filter |
| CN102188856A (en) * | 2010-03-12 | 2011-09-21 | 韩国energy技术研究院 | Deep-layer filtering type air filtering medium |
Non-Patent Citations (1)
| Title |
|---|
| 水泗誉等: "《国内外造纸分析检验使用方法》", 31 December 2007 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013168883A1 (en) | 2013-11-14 |
| KR101201759B1 (en) | 2012-11-15 |
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