CN105214383A - Filter material and crease processing method thereof and air purifier air cleaner - Google Patents
Filter material and crease processing method thereof and air purifier air cleaner Download PDFInfo
- Publication number
- CN105214383A CN105214383A CN201410239851.1A CN201410239851A CN105214383A CN 105214383 A CN105214383 A CN 105214383A CN 201410239851 A CN201410239851 A CN 201410239851A CN 105214383 A CN105214383 A CN 105214383A
- Authority
- CN
- China
- Prior art keywords
- filter material
- processing method
- trapping layer
- air
- peak portion
- 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
Abstract
The invention provides filter material and crease processing method thereof and air purifier air cleaner.According to the present invention can be inhibited trapping performance decline and inhibit the filter material for air filters of the rising of structural drag.A mode of the present invention is the crease processing method of filter material for air filters, it is characterized in that, the method comprises the step following filter material for air filters being implemented to fold processing, wherein, described filter material for air filters has the trapping layer be made up of melt spraying non-woven fabrics, the firm softness of the described filter material for air filters determined by the Ge Erlaifa described in JIS-L1085-6.10.3 is more than 6mN, and be implemented electret process, in the step of described enforcement fold processing, more than 80 DEG C and less than 90 DEG C, and under the condition of 15 minutes ~ 30 minutes, carry out compression to described filter material for air filters to heat.
Description
Technical field
The present invention relates to the crease processing method of filter material for air filters, filter material for air filters and air purifier.
Background technology
When the filter material for air filters that fold is processed into zigzag manner is in use subject to blast and is out of shape, there is the situation that the pressure loss occurs to rise.The reason that such pressure loss rises is the rising of structural drag.It is known that in the past, in order to suppress the rising of such structural drag, the firm softness of filter material was adjusted to the scope (such as, patent document 1) of regulation.But when the firm softness of filter material is too high, after fold processing, folding line passes through along with the time and is deformed into circular arc gradually, thus, in use there is the situation that structural drag rises.Therefore, the effect of the suppression structural drag rising obtained by regulating firm softness is counteracted.
On the other hand, it is known that in the past, added man-hour carrying out fold, and heating by implementing compression to filter material, suppressing the distortion (such as, patent document 2) across two relative opposite faces of the folding line of fold.
Prior art document
Patent document 1: Japanese Patent No. 4906675 publication
Patent document 2: Japanese Patent No. 3691160 publication
Summary of the invention
But find following situation: even if the compression that the filter material high to firm softness is implemented to record in patent document 2 is heated, sometimes can not maintain sharp-pointed folding line, thus make structural drag increase.On the other hand, if improve compression heat time heating-up temperature, then can be contemplated to filter material and sustain damage, the trapping hydraulic performance decline of filter material.
The object of the present invention is to provide a kind of can obtain catching can the crease processing method of filter material for air filters of the repressed filter material for air filters of decline rising that is suppressed, structural drag, the filter material for air filters obtained by the method and air purifier air cleaner.
The present inventor conscientiously studies repeatedly for the problems referred to above, found that: by implementing fold processing under the heating-up temperature and the condition of heat time of regulation, even if make when to inhibit the decline of the trapping performance of filter material and the filter material for air filters with desired firm softness carries out fold processing, also can suppress the rising of structural drag, thus complete the present invention.
A mode of the present invention is the crease processing method of filter material for air filters, it is characterized in that,
The method comprises the step following filter material for air filters being implemented to fold processing, described filter material for air filters has the trapping layer be made up of melt spraying non-woven fabrics, the firm softness of the described filter material for air filters determined by the Ge Erlaifa recorded in JIS-L1085-6.10.3 is more than 6mN, and implement electret process, in the step implementing the processing of described fold, more than 80 DEG C and less than 90 DEG C and under the condition of 15 minutes ~ 30 minutes, compression is carried out to described filter material for air filters and heats.
The mass area ratio of described filter material for air filters is preferably 80g/m
2~ 150g/m
2.
The thickness of described filter material for air filters is preferably 0.3mm ~ 1.6mm.
Described filter material for air filters also has enhancement Layer, and described enhancement Layer is configured in the side in the direction that gas passes through relative to described trapping layer, supports described trapping layer, this enhancement Layer to particle diameter be the arresting efficiency of the particle of 0.3 μm lower than described trapping layer,
Described enhancement Layer is preferably made up of the non-woven fabrics made by chemical bonding processes.
By described filter material for air filters is folded into zigzag manner, carry out described fold processing,
Preferably, carry out described compression for the described multiple peak portion be arranged in the upstream side in the direction that gas passes through and the regional in downstream be folded in the filter material for air filters of zigzag manner to heat.
In described compression is heated, the heating-up temperature for the described peak portion be arranged in the region of described upstream side can be different from the heating-up temperature for the described peak portion be arranged in the region in described downstream.
The trapping layer of described filter material for air filters is configured in the mode of the end of the end or downstream that become the upstream side in the direction that gas passes through,
In described compression is heated, for being arranged in the heating-up temperature that becomes the described peak portion in the region of the side same side of end with the described trapping layer in described upstream side and described downstream lower than the heating-up temperature for the described peak portion be arranged in the region of the side not homonymy becoming end with described trapping layer.
In described compression is heated, be shorter than the heat time for the described peak portion be arranged in the region of the side not homonymy becoming end with described trapping layer for the heat time being arranged in the described peak portion become in the region of the side same side of end with the described trapping layer in described upstream side and described downstream.
Another way of the present invention is the filter material for air filters having been carried out fold processing by described crease processing method.
The another mode of the present invention is air purifier air cleaner, and wherein, this air purifier air cleaner has: above-mentioned filter material; And
Framework, it keeps described filter material.
According to the present invention, obtain trapping the suppressed and repressed filter material for air filters of the rising of structural drag of the decline of performance, there is the air purifier air cleaner of such filter material for air filters.
Accompanying drawing explanation
Fig. 1 is the sectional view of the Rotating fields that air filter filter medium is shown.
Fig. 2 is the figure that the device implementing fold processing is shown.
Fig. 3 is the outside drawing of a part of the filter material (filter material machined) after fold processing is shown.
Fig. 4 is the outside drawing that air filter unit is shown.
Fig. 5 is the figure that the air purifier with air filter unit (air purifier air cleaner) is shown.
Fig. 6 is the figure that the method evaluating sharpness is described, wherein, the cross section that (a) of Fig. 6 illustrates the cross section of filter material when being be evaluated as A, (b) of Fig. 6 illustrates the cross section of filter material when being be evaluated as B, (c) of Fig. 6 illustrates filter material when being be evaluated as D.
Label declaration
1 filter material
3 trapping layers
5 enhancement Layers
20 filter bags
23 septs
30 air filter units
31 frameworks
40 air purifiers
Detailed description of the invention
Below, the crease processing method of filter material for air filters of the present invention, filter material for air filters and air purifier air cleaner are described.
The processing method of the filter material for air filters of present embodiment comprises following filter material for air filters (following, also referred to as filter material) implement fold processing step, wherein, described filter material for air filters has the trapping layer be made up of melt spraying non-woven fabrics, the firm softness of the described filter material for air filters determined by the Ge Erlaifa recorded in JIS-L1085-6.10.3 is (following, firm softness) more than 6mN, and be implemented electret process.In the step implementing the processing of this fold, more than 80 DEG C and less than 90 DEG C and under the condition of 15 minutes ~ 30 minutes, compression heating is carried out to filter material.
(filter material for air filters)
The filter material 1 used in the present embodiment is such as the filter material used in air purifier, and as shown in Figure 1, it has trapping layer 3.Fig. 1 is the sectional view of the Rotating fields that filter material 1 is shown.
Trapping layer 3, for the particulate of the dust in captured gas etc., is disposed of the end of the upstream side in the direction becoming air permeable filter material 1.In addition, in FIG, below is upstream side, and top is downstream.
Trapping layer 3 is made up of melt spraying non-woven fabrics, or is made up of staple fiber nonwoven fabric.In addition, in this manual, the fibre diameter of the trapping layer be made up of staple fiber nonwoven fabric is 1 μm ~ 10 μm, and thickness is 0.1mm ~ 0.6mm, and mass area ratio is 20g/m
2~ 40g/m
2.Especially, in staple fiber nonwoven fabric, melt spraying non-woven fabrics, by being implemented electret process, is suitable as the filter material of the trapping excellent performance of the particulate to particle diameter very little (such as 0.3 μm ~ 1 μm).In addition, electret processing example is in this way by implementing applying DC voltage non-woven fabrics.
Melt spraying non-woven fabrics is such as formed as follows: extrude molten resin constituent, become trickle resin flow, this resin flow is contacted with heated air at a high speed, becomes the discontinuous fibre that fibre diameter is trickle, and by this fiber aggregate on porous supporting mass.The mass area ratio of melt spraying non-woven fabrics is 5g/m
2~ 100g/m
2, be preferably 10g/m
2~ 80g/m
2.The diameter of fiber is 0.1 μm ~ 10 μm, is preferably 1 μm ~ 6 μm, is more preferably 3.0 μm ~ 3.7 μm.In this manual, the diameter of fiber means fiber diameter.Fiber diameter is the average of this fibre diameter of more than 100 using the diameter of the fiber of determination of electron microscopy more than 100 and obtain.By making the diameter of fiber be in above-mentioned scope, when carrying out electret process, obtain charged after the high filter material of arresting efficiency, and, the pressure loss of filter material can be made to maintain lower (such as below 20Pa).The average fiber length of fiber is 50mm ~ 200mm, is preferably 80mm ~ 150mm.
In the material of melt spraying non-woven fabrics, such as from polyethylene, ethylene-propylene copolymer, ethylene-butene copolymer, the vinyl copolymers such as ethylene-octene copolymer, polypropylene or propylene copolymer, the polyolefin such as polybutene, 6-nylon, 66-nylon, 666 copolyamides, 610-nylon, 11-nylon, the polyamide of 12-nylon etc. or copolyamide, polyethylene terephthalate, terephthalate copolymer, the polyester such as polybutylene terephthalate (PBT), aliphatic category Merlon, polyurethane elastomer, polyvinyl chloride-based or copolymer, Wholly aromatic polyester, the polymer of at least a kind that selects in polyphenylene sulfide etc.Wherein, for melt-blownly having excellent formability, cost is low and in the manufacture of melt spraying non-woven fabrics, be mixed into the extremely low reason of the possibility that can not become the fibrous polymer drops being referred to as ball (shot), is preferably polypropylene.
In addition, filter material 1 preferably comprises the enhancement Layer 5 be layered on trapping layer 3.Enhancement Layer 5, to be configured in the mode of the end of the upstream side of filter material 1, is configured in the upstream side of trapping layer 3.Enhancement Layer 5 supports trapping layer 3, strengthens the trapping layer 3 that rigidity is less.Enhancement Layer 5 pairs of particle diameters are that the arresting efficiency of the particle of 0.3 μm is lower than trapping layer 3.
Enhancement Layer 5 is made up of staple fiber nonwoven fabric.As mentioned above, because trapping layer 3 is made up of staple fiber nonwoven fabric, therefore, filter material 1 entirety is made up of staple fiber nonwoven fabric.Therefore, compared with being the filter material be made up of nonwoven fabric of long fibers or the filter material comprising nonwoven fabric of long fibers with entirety, filter material 1 is thin and light, easily carries out fold processing.In addition, in this manual, the fibre diameter of the enhancement Layer be made up of staple fiber nonwoven fabric is 15 μm ~ 30 μm, and thickness is more than 0.2mm and is less than 1.0mm, and mass area ratio is 60g/m
2~ 110g/m
2.
As such enhancement Layer 5, such as, can enumerate the non-woven fabrics (following, respectively also referred to as chemical bond non-woven fabrics, thermal non-woven fabrics) made by chemical bonding processes or thermal method.Chemical bond non-woven fabrics is produced by the bonding short fiber of adhesive.Can, by applying heat to short fiber, short fiber being bonded to each other, making thermal non-woven fabrics thus, any one non-woven fabrics can be made by known method.As trapping layer 5, in these non-woven fabrics, be preferably made up of chemical bond non-woven fabrics.When for filter material 1, compared with thermal non-woven fabrics, chemical bond non-woven fabrics easily obtains the filter material 1 of higher firm softness, easily firm softness is adjusted to the scope more than 6mN.
Chemical bond non-woven fabrics or thermal non-woven fabrics and trapping layer 3 stacked such as by using bonding agent to make two layers bond to carry out.In addition, the bonding carrying out 2 kinds of non-woven fabrics with the following method can be made: scatter thermoplasticity and the method for the heat-fusible resin powder of low melting point; The method of moisture-curable polyurethane resin is scattered by spray-on process; Or, scatter thermoplastic resin, thermal welding fiber make it by the method etc. of the passage of heat.
Trapping layer 3 and the stacked of enhancement Layer 5 can carry out before electret treatment process.That is, can be laminated in after on trapping layer 3 at enhancement Layer 5, electret process is implemented to this duplexer.
In addition, enhancement Layer can be layered in the both sides of trapping layer.
In filter material 1, trapping layer 3 and enhancement Layer 5 can be single or multiple lift respectively.
The firm softness of filter material 1 is more than 6mN.Firm softness is that Ge Li (Gurley) method by recording in JIS-L1085-6.10.3 determines, and is the bending least index representing fiber etc.In this manual, firm softness means the firm softness of the length direction (MD (machinedirection: machine direction) direction) of filter material.Because the firm softness of filter material 1 is in such scope, therefore, it is possible to suppress filter material 1 to be out of shape because of blast in use, thus structural drag is made to increase.Especially, filter material 1 is made up of staple fiber nonwoven fabric, easily carries out fold processing, therefore, considers this point, firm softness can be set in the above-mentioned scope lower than the filter material comprising nonwoven fabric of long fibers.When considering fold on process ease, the higher limit of firm softness is preferably 30mN, such as, be 20mN.
The mass area ratio of filter material 1 is preferably 80g/m
2~ 150g/m
2.When the mass area ratio of filter material 1 is in this scope, easily obtain the filter material 1 of firm softness more than 6mN.
In addition, the thickness of filter material 1 is preferably 0.3mm ~ 1.6mm.When the thickness of filter material 1 is in this scope, easily obtain the filter material 1 of firm softness more than 6mN.
Filter material 1 pair of particle diameter is that the charged front arresting efficiency of 0.3 μm is preferably 15% ~ 50%.Arresting efficiency before charged mean by electret process described later carry out charged before the arresting efficiency of filter material.Arresting efficiency before charged can use charged before filter material or the filter material after going electric treatment implemented to the filter material after charged obtain.In addition, in the explanation afterwards of the arresting efficiency before charged, the arresting efficiency after electricity is referred to.
In addition, because trapping layer 3 has been implemented electret process, therefore, the arresting efficiency of (such as, less than 1 μm) particulate that filter material 1 pair of particle diameter is little rises.For the viewpoint improving the arresting efficiency of trapping layer be made up of melt spraying non-woven fabrics, the carried charge (surface charge density) of filter material 1 is preferably less than 3 × 10
-10~ 10 × 10
-10c/cm
2.In addition, the carried charge of filter material can be adjusted to above-mentioned scope by known electret process.Carried charge is such as the value according to JIS-C61340-2-2, specifically, by faraday cup (Faradaycage) (MODEL-TR8031, Adc Inc.'s system)) be connected with electronic digital scale 8252 (Adc Inc.'s system), the value (charged particles amount) determined under charge quantity measuring pattern.
The pressure loss of filter material 1 when filter material is 5.3cm/ second through wind speed is preferably below 20Pa.
Filter material 1 can load antiseptic.Antiseptic such as has antibiotic property and deodorization, can enumerate the metal constituent comprising iron, aluminium, titanium etc. respectively micro-ly.
(crease processing method)
As mentioned above, the method for present embodiment comprises step filter material 1 being implemented to fold processing.Fold processing is by being folded into zigzag manner to carry out by filter material 1.Specifically, the compression carried out in this step for the multiple peak portion be arranged in the upstream side in the direction that gas passes through and the regional in downstream be folded in the filter material for air filters of zigzag manner is heated.
Herein, use the device shown in Fig. 2 to illustrate to carry out compressing situation about heating.Fig. 2 carries out compressing the device heated.This device carries out fold processing in complex way.
In the apparatus, filter material is transported to downstream by multiple roller from the filter material roller being rolled into roll, adds machine 11, filter material folding machine 13, heater 4a, 4b, hot melt coating machine 12, filter material folding machine 15 process successively by muscle.Muscle adds machine 11 by adding the muscle as the folding line of fold in advance on filter material, makes easily to utilize filter material folding machine 13 that filter material 1 is folded into zigzag manner.By making two blade alternating movements up and down of filter material folding machine 13, the filter material being attached with muscle is folded into zigzag manner.The filter material being folded into zigzag manner is directed between heater 4a, 4b of the downstream being configured in filter material folding machine 13.Heater 4a, 4b are the heaters of the tabular with mutually the same area, are configured to parallel and relatively.Distance between heater 4a, 4b is adjusted to the length slightly shorter than the folding width of filter material, thus presses the filter material (compression) be directed between heater 4a, 4b gently at above-below direction.Thus, filter material by during between heater 4a, 4b in side towards downstream, is implemented compression and heats.During carrying out compression and heating, according to the speed sending filter material, filter material remains and is folded into zigzag manner state and is transported to downstream.The filter material that have passed between heater 4a, 4b temporarily expands to sheet herein, and next, by the hot melt coating machine 12 being configured in two positions, two-sided coated hot melt strip, forms sept.In addition, filter material, by filter material folding machine 15, is folded into zigzag manner in the same manner as filter material folding machine 13.Like this fold processing is carried out to filter material.Filter material carries out fold processing by this device, becomes the filter material being processed into zigzag manner, and forms sept, thus become filter bag.
In addition, such as, can substitute reciprocating mode, carry out fold processing in a rotative pattern.
It is more than 80 DEG C and less than 90 DEG C and carry out under the condition of 15 minutes ~ 30 minutes that the compression of above-mentioned heater 4a, 4b is heated.Find following situation: heat by carrying out compression with such heating-up temperature, heat time, even if for the filter material of firm softness with regulation, the folding line of the fold after fold processing also remains stable, and the trapping performance of the melt spraying non-woven fabrics after electret process also can not decline.
When heating-up temperature is below 80 DEG C, firm softness can be expanded to circular arc along with the time passes through more than the folding line of the fold of the filter material of 6mN.On the other hand, when heating-up temperature is more than 90 DEG C, the chargeding performance of filter material declines, the trapping performance impairment of the filter material after electret process.In addition, if the heat time is less than 15 minutes, heat even if then carry out compression in the scope of above-mentioned heating-up temperature, the folding line with the fold of the filter material of the firm softness of regulation also passes through along with the time and becomes no longer clear.Especially, as said apparatus from the filter material that filter material roller provides, owing to being had crimpiness by with stipulated time roll keeping, therefore, filter material can be the power of arc-shaped and be more prone to the sharpness of the folding line losing fold because of flexure.On the other hand, if the heat time surpasses 30 minutes, then, when carrying out compression heating in the scope of above-mentioned heating-up temperature, filter material is subject to the damage caused by thermal conductance, makes the trapping performance impairment of the filter material after electret process.
The filter material of zigzag manner is in compression is heated, the top being arranged in the multiple peak portion in the region of the upstream side (being top in fig. 2) of gas during use connects with the lower surface of heater 4a respectively, further, the top being arranged in the multiple peak portion in the region in the downstream (being below in fig. 2) of gas during use connects with the upper surface of heater 4b respectively.Thus, compression being heated the damage suppression of the part beyond the top in the peak portion of filter material is bottom line.In addition, the heat time is transported to play between heater 4a, 4b from filter material and leaves between heater 4a, 4b, rests on time between heater 4a, 4b.
In above-mentioned fold processing, filter material folding width, peak number (being arranged in the quantity in the peak portion in the region of the side in upstream side and downstream) are not particularly limited, and such as, filter material peak number is 120, and folding width is 60mm.
The heating-up temperature of heater 4a, 4b can be equal, also can be different.Such as, when filter material for the trapping layer shown in Fig. 1 and the two-layer structure of enhancement Layer and the trapping layer of melt spraying non-woven fabrics be made up of the fibrous material of the melting point material lower than the enhancement Layer of chemical bond non-woven fabrics, in the scope being in above-mentioned heating-up temperature by making the temperature of heater 4a and lower than the temperature of heater 4b, the damage caused because of the heat of trapping layer can be suppressed, suppress the deterioration of trapping performance.
In compression is heated, the heating-up temperature for the peak portion be arranged in the region of upstream side can be different from the heating-up temperature for the peak portion be arranged in the region in downstream.
The trapping layer of filter material for air filters is configured to the end of the upstream side becoming the direction that gas passes through or the end in downstream, in compression is heated, the heating-up temperature for the peak portion be arranged in the region of the side same side becoming end with the trapping layer in upstream side and downstream can lower than the heating-up temperature for the peak portion be arranged in the region of the side not homonymy becoming end with trapping layer.
In addition, in heater 4a, 4b, in the scope of above-mentioned heating-up temperature, thermograde can be had on the throughput direction of filter material.Can be such as that, from the end of the upstream side of heater 4a, 4b, along with the end towards downstream, temperature reduces gradually.In this case, by changing the allocation position being distributed in thermoelectricity line in heater 4a, 4b, such thermograde can be formed.In addition, in the scope of above-mentioned heat time, the transporting velocity of the filter material between heater 4a, 4b can be different with throughput direction.Such as, the rate of delivery of the filter material of the roller in the downstream of heater 4a, 4b can be made faster than the speed inweaved by filter material folding machine 13.
In compression is heated, the heat time of heater 4a and heater 4b can be equal, also can be different.As different situations, such as can control as follows: in heater 4a, carry out temperature control, to make the temperature become in whole parts of filter material throughput direction in the scope of above-mentioned heating-up temperature, and, temperature control is carried out, to make to become the temperature lower than above-mentioned heating-up temperature in the part in the downstream of filter material throughput direction in heater 4b.
Compression described in patent document 2 is heated and is carried out (with reference to paragraph 0009) for the viewpoint of the trapping hydraulic performance decline suppressing electret filter material, such as, when the filter material be made up of melt spraying non-woven fabrics and chemical bond enhancement Layer, in the scope of 60 DEG C ~ 80 DEG C, carry out compression heat.In the past, about the filter material comprising such melt spraying non-woven fabrics, the compression heating of the temperature thought more than 80 DEG C can reduce the trapping performance of filter material, but according to the research of the present inventor, be surprised to find that: except the heating-up temperature that fold adds man-hour, by controlling the heat time in the lump, thus, even more than the temperature of 80 DEG C, the decline of the trapping performance of the filter material after implementing electret process also can be suppressed.Especially, find: the melt spraying non-woven fabrics as staple fiber nonwoven fabric is suitable as the electret filter material of trapping excellent performance, on the other hand, because its fibre structure is trickle, therefore easily sustain damage under the high temperature conditions, but according to above-mentioned heating condition, inhibit the decline of trapping performance.And find: under this heating condition, compared with the past, the filter material that firm softness is high also maintains the sharpness of the folding line of fold.
Method according to the present embodiment, by on the basis regulating heating-up temperature, the further adjustment heat time, the decline of the trapping performance of electret filter material can be suppressed, and can heat by the compression more than 80 DEG C the folding line stably maintaining the fold of the high filter material of firm softness, thus, the rising of structural drag when inhibit use.
The filter material that method according to the present embodiment implements fold processing is such as set as the filter bag comprising the part shown in Fig. 3.Fig. 3 is the stereoscopic figure of the part that filter bag is shown.In figure 3, in order to easy understand, illustrate under the state of a part cutting filter bag 20.Filter bag 20 is made up of the filter material machined and sept 23.Sept 23 is the intervals (fold interval) on the summit in order to stably keep adjacent two peaks portion, the resinous hot melt strip formed on the surface of filter material 1.Hot melt strip is formed as in two surfaces of filter material 1, such as, extending in the mode that the folding line in the peak portion with fold is vertical.On the doubling direction of fold, (such as 25mm or 50mm) spaced apart is provided with multiple hot melt strip, and they extend parallel to each other.
In addition, filter material remains in framework by the filter bag of above-mentioned mini fold-type further, forms the such air filter unit shown in Fig. 4 thus.Fig. 4 is the outside drawing that air filter unit is shown.Air filter unit 30 has filter material 1, framework 31 and odor removal filter (not shown).
Framework 31 is parts of mouthful shape, keeps filter material 1, keep the zigzag manner of filter bag 20 by the space in inner side.Framework 31 is made up of the spun-bonded non-woven fabrics of polyester.Framework 31 is not particularly limited, such as, can have the firm softness of 40mN ~ 170mN degree.Odor removal filter is coating deodorant and the non-woven fabrics making deodorant dry, is applicable to situation air filter unit 30 being used for air purifier.Framework 41 can combine metal or plastic sheet material makes.
Air filter unit 30 is that Medium performance filter (is mainly, the particle being less than 5 μm to particle diameter has the air cleaner of moderate granule capturing rate), when counting method (use particle diameter be the particle of 0.3 μm to measure) in have 80% ~ 95% arresting efficiency, pressure loss when filter material Negotiation speed is 5.3cm/ second is 73Pa ~ 93Pa.
Air filter unit can be used with prefilter.
Prefilter to be arranged on than filter bag by upstream side, is to be more than 5 μm and concentration is 0.4mg/m at removal particle diameter
3~ 7mg/m
3dust time the filter that uses.The arresting efficiency of prefilter is any one in 5% ~ 10% under 15% ~ 40% under 70% ~ 90% under gravimetric method, colorimetric method, counting method, and the pressure loss is 30Pa ~ 296Pa, and dust-holding capacity is 500g/m
3~ 2000g/m
3.In the mensuration of arresting efficiency, in gravimetric method, use the dust of regulation in the 15 kinds of powders or air conditioner association of the U.S. (ASHRAE) specified in JISZ8901.In colorimetric method, use the 11 kinds of powders specified in JISZ8901.In counting method, any one particle in the atmospheric dust that use particle diameter is 0.3mm, polyalpha olefin (PAO), silica.Dust-holding capacity is the Dust Capacity that filter trapped before the final pressure loss reaching regulation.Specifically, in prefilter, employ be made up of the fiber of synthetic resin etc. non-woven fabrics, mat, felted filter material.Non-woven fabrics can carry out the synthetic resin fiber of Production Example as PETG (PET:polyethyleneterephthalate) etc. by utilizing bonding chemical bonding processes such as the adhesive of such as styrene butadiene ribber (SBR) etc.Such as, can by by fiber containing in the liquid be immersed in containing adhesive, fiber is bonded to each other, or invests fiber by being blown by adhesive, fiber is bonded to each other.Electret process described later can be implemented to prefilter.In addition, the filter material of prefilter also can be made to form crimp shape.
Air filter unit, except can being mini fold-type, can also be the air cleaner of other type of separation type, V bank type etc.
Air filter unit also may be used for the device beyond air purifier.
Air filter unit 30 is used to the air purifier 40 shown in Fig. 5.In addition, in this manual, the air filter unit of air purifier will be used for also referred to as air purifier air cleaner.Fig. 5 is the exploded perspective view that the air purifier 40 with air filter unit 30 is shown.Air purifier 40 has main body 41, air filter unit 30, prefilter 43 and front surface panel 45.In addition, although not shown, air purifier 40 also has odor removal filter etc.Main body 41 sucks extraneous air from the air inlet be formed between main body 41 and front surface panel 45, and, make the air of suction be provided to the indoor as outside by the filter material of air filter unit 30 from the unshowned exhaust outlet of figure.Main body 41, except having housing, also has fan, control device etc.In main body 41, the part of nearby side in Figure 5, be formed with two opening concavities 41a, 41b, in these opening concavities 41a, 41b, overlapped air filter unit 30, prefilter 43 respectively one by one.Front surface panel 45 is installed in the front surface of main body 41.
This air purifier 40 is arranged on indoor, for making indoor purification of air.In this air purifier 40, the air in air inlet suction chamber, successively by prefilter 43, air filter unit 30, thus, the particulate in air is captured, and is deodorant and purifies, and turns back to indoor from supply port.Herein, in order to the purposes of air filter unit 30 is described, be illustrated for the air purifier 40 shown in Fig. 5, but, air filter unit 30 also may be used for the air purifier of other kind, in addition, also may be used for device and the air-conditioning system of the air conditioner beyond air purifier etc.
(embodiment)
Below, embodiment is shown, specifically describes the present invention.
(making of air filter filter medium)
To fiber diameter be 2.7 μm ~ 4.1 μm, thickness is 0.1mm, mass area ratio is 30g/m
2polypropylene melt spraying non-woven fabrics, interelectrode distance is set to 8mm, and applies the DC voltage of 6kV ~ 20kV, carry out electret process thus, thus obtain 5 × 10
-10c/cm
2the trapping layer of carried charge.Obtained trapping layer and fiber diameter be 18 μm, thickness is 0.5mm, mass area ratio is 70g/m
2polyester chemical bond non-woven fabrics between, scatter the thermal fusing powder be made up of polyester based resin, heat with 160 degree, obtain thus stacked, thickness is 0.6mm and mass area ratio is 100g/m
2filter material.
In addition, measure firm softness according to following will getting, obtain 13mN.
On the other hand, as chemical bond non-woven fabrics, applying unit area quality is 27g/m
2non-woven fabrics, in the same manner as filter material sample 1, make filter material, become filter material sample 2.The firm softness of filter material sample is 5mN.
In addition, as chemical bond non-woven fabrics, applying unit area quality is 17g/m
2non-woven fabrics, in the same manner as filter material sample 1, make filter material, become filter material sample 3.The firm softness of filter material sample is 3mN.
By rotary loom, fold processing is implemented to obtained filter material sample 1 ~ 3.Now, implement fold processing by heating condition various shown in table 1, evaluate the trapping rate of change of performance and the sharpness of crimp shape by following main points.Following table 1 shows result.
In addition, carry out fold processing as follows: folding width is 33mm, spacing (fold interval) is 3mm, and fold number is 203, and filter size is 610mm × 610mm.
In addition, in the comparative example 1 shown in table 1, employ filter material sample 3, in comparative example 2,3 and reference example, employ filter material sample 2, in addition, in other comparative example and embodiment, all employ filter material sample 1.In addition, in Table 1, respectively, MB represents melt spraying non-woven fabrics, and CB represents chemical bond non-woven fabrics.
(firm softness)
Measure according to the Ge Erlaifa described in JIS-L1085-6.10.3.Specifically, be used in illustrated Ge Lishi testing machine in JIS-L1085-6.10.3, from as the filter material sample of sample, the test film that 5 length are Lmm, width is the size of dmm is chosen respectively at vertical and horizontal, and, test film is arranged on the chuck of testing machine, aims at the scale L/25.4 on moveable arm A, chuck is fixed.Next, from the fulcrum of oscillator B, suitable counterweight Wa, Wb and Wc are arranged in bottom counterweight installing hole a, b, c, moveable arm are at the uniform velocity rotated, read scale RG when test film leaves from oscillator B, calculate firm softness according to following formula:
Br＝RG×(aW
a+bW
b+cW
c)×(L―12.7)
2/d×3.375×10
-5
Herein,
Br: just softness (mN)
RG: the scale (mgf) when sample leaves from oscillator B
A, b, c: the distance (mm) between fulcrum and each counterweight installing hole
W
a, W
b, W
c: counterbalance mass (g)
L: the length (mm) of sample
D: the width (mm) of sample,
And obtain vertical and horizontal mean value separately, according to JIS-Z8401, will the value of decimal point next bit be similar to as firm softness.
(arresting efficiency)
Make to comprise particle diameter be the atmospheric dust of 0.3 μm (domain size distribution is 0.2 μm ~ 0.5 μm) air filter material by wind speed (filter material Negotiation speed) be 5.3cm/ second, filter area is 100cm
2by test filter material when (the circular filter material of diameter 11.3cm), use particle collector (Leon (リ オ Application) Inc., KC-18) sample, measure the granule number by front and back simultaneously continuously, and obtain arresting efficiency according to following formula.
Arresting efficiency (%)=(by after granule density (number/0.01CF)-by front granule density (number/0.01CF))/(granule density (number/0.01CF) by front) × 100
According to above-mentioned main points, measure arresting efficiency in the front and back of fold processing, calculate the rate of change of arresting efficiency according to following formula.
Arresting efficiency (%) × 100 before rate of change (%)=(arresting efficiency (%) after the arresting efficiency (%) before fold processing-fold processing)/fold processing
Consequently, being that the average evaluation of less than 0.5% is A by rate of change, by more than 0.5% and the average evaluation of less than 1% is B, is D by the average evaluation more than 1%.
(sharpness)
Peak portion is observed under the state making the filter material after folding maintain above-mentioned filter size.Consequently, the average evaluation not being expanded to shown in Fig. 6 being exceeded datum length is A, and be B by the average evaluation that the top in peak portion produces resilience, it is D that two opposite faces forming peak portion are expanded to the average evaluation exceeding described datum length.Fig. 6 is the figure that the method evaluating sharpness is described, wherein, the cross section that (a) of Fig. 6 shows the cross section of filter material when being be evaluated as A, (b) of Fig. 6 shows the cross section of filter material when being be evaluated as B, (c) of Fig. 6 shows filter material when being be evaluated as D.In these figures, L1, L2 represent datum length, and are the cross-directional length comprising central authorities' two opposite faces in 4 opposite faces comprised in adjacent two peaks portion at two ends.In (c) of Fig. 6, about peak portion A, the region shown in two R1 is expanded to and exceedes datum length L1 (oblique line portion), and about peak portion B, the region shown in two R2 is expanded to and exceedes datum length L2 (oblique line portion).On the other hand, in (a) of Fig. 6, there is not the expansion exceeding datum length.In (b) of Fig. 6, on the opposite face (part except except the top in peak portion) in peak portion, there is not the expansion exceeding datum length, but at the top in peak portion, occurred the expansion exceeding datum length (resilience) (oblique line portion).Resilience refers to the bounce of the fibrous material due to filter material, and the folding line after fold is processed turns back to the folding recovery produced in the past.In addition, in (c) of Fig. 6, datum length is the cross-directional length in the above-mentioned central immediate above-below direction position of two opposite faces.
[table 1]
As known from Table 1, when to firm softness more than 6mN and the filter material implementing electret process carried out more than 80 DEG C and less than 90 DEG C and the compression of 15 minutes ~ 30 minutes are heated (embodiment 1 ~ 5), the change that inhibit trapping performance can be confirmed, optimize sharpness.
On the other hand, find following situation: carried out (comparative example 1 ~ 3) above-mentioned compression is heated at the filter material to firm softness being below 6mN, structural drag rises.
In addition, found following situation: though use firm softness more than 6mN filter material when, also when the heating-up temperature that fold adds man-hour is below 80 DEG C (comparative example 2,3), sharpness worsen.
Find following situation: when heating-up temperature is more than 90 DEG C (comparative example 4), trapping hydraulic performance decline.
Found following situation: when the heat time is less than 15 minutes (comparative example 5), sharpness worsens.
Found following situation: when the heat time more than 30 minutes (comparative example 6), trapping hydraulic performance decline.
Above, the corrugation method of filter material for air filters of the present invention, filter material for air filters and air purifier air cleaner have been described in detail, but the invention is not restricted to above-mentioned embodiment, without departing from the scope of the subject in the invention, certainly various improvement and change can be carried out.
Claims (10)
1. a crease processing method for filter material, is characterized in that,
The method comprises the step following filter material being implemented to fold processing, described filter material has the trapping layer be made up of melt spraying non-woven fabrics, the firm softness of the described filter material determined by the Ge Erlaifa recorded in JIS-L1085-6.10.3 more than 6mN, and has been implemented electret process
In the step implementing the processing of described fold, more than 80 DEG C and less than 90 DEG C and under the condition of 15 minutes ~ 30 minutes, carry out compression heating to described filter material.
2. the crease processing method of filter material according to claim 1, wherein,
The mass area ratio of described filter material is 80g/m
2~ 150g/m
2.
3. the crease processing method of filter material according to claim 1 and 2, wherein,
The thickness of described filter material is 0.3mm ~ 1.6mm.
4. the crease processing method of the filter material according to any one in claims 1 to 3, wherein,
Described filter material also has enhancement Layer, and this enhancement Layer is configured in the side in the direction that gas passes through relative to described trapping layer, supports described trapping layer, and the arresting efficiency of this enhancement Layer to the particle of particle diameter 0.3 μm is less than described trapping layer,
Described enhancement Layer is made up of the non-woven fabrics manufactured by chemical bonding.
5. the crease processing method of the filter material according to any one in Claims 1 to 4, wherein,
By described filter material is folded into zigzag manner, carry out described fold processing,
Carry out described compression for the described multiple peak portion be arranged in the upstream side in the direction that gas passes through and the regional in downstream be folded in the filter material of zigzag manner to heat.
6. the crease processing method of filter material according to claim 5, wherein,
In described compression is heated, the heating-up temperature for the described peak portion be arranged in the region of described upstream side is different from the heating-up temperature for the described peak portion be arranged in the region in described downstream.
7. the crease processing method of filter material according to claim 6, wherein,
The trapping layer of described filter material is configured in the mode of the end of the end or downstream that become the upstream side in the direction that gas passes through,
In described compression is heated, for being arranged in the heating-up temperature that becomes the described peak portion in the region of the side same side of end with the described trapping layer in described upstream side and described downstream lower than the heating-up temperature for the described peak portion be arranged in the region of the side not homonymy becoming end with described trapping layer.
8. the crease processing method of the filter material according to claim 6 or 7, wherein,
In described compression is heated, be shorter than the heat time for the described peak portion be arranged in the region of the side not homonymy becoming end with described trapping layer for the heat time being arranged in the described peak portion become in the region of the side same side of end with the described trapping layer in described upstream side and described downstream.
9. a filter material, wherein,
This filter material has carried out fold processing by the crease processing method described in any one in claim 1 ~ 8.
10. an air purifier air cleaner, wherein,
This air purifier air cleaner has:
Filter material according to claim 9; And
Framework, it keeps described filter material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410239851.1A CN105214383B (en) | 2014-05-30 | 2014-05-30 | Filter material and its crease processing method and air purifier air filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410239851.1A CN105214383B (en) | 2014-05-30 | 2014-05-30 | Filter material and its crease processing method and air purifier air filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105214383A true CN105214383A (en) | 2016-01-06 |
| CN105214383B CN105214383B (en) | 2019-09-27 |
Family
ID=54983864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410239851.1A Active CN105214383B (en) | 2014-05-30 | 2014-05-30 | Filter material and its crease processing method and air purifier air filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105214383B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112805078A (en) * | 2018-09-28 | 2021-05-14 | 大金工业株式会社 | Air filter medium, filter pack, air filter unit, and method for manufacturing air filter unit |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1269852A (en) * | 1997-09-11 | 2000-10-11 | 东丽株式会社 | Fabric |
| CN1275420A (en) * | 2000-05-22 | 2000-12-06 | 张国权 | Method for making hardened multi-wrinkle filter material |
| CN1292302A (en) * | 1999-10-07 | 2001-04-25 | 大金工业株式会社 | Air filter material, filter assembly and filter unit and manufacturing method of air filter material |
| JP4133180B2 (en) * | 2002-01-09 | 2008-08-13 | 日本エアー・フィルター株式会社 | Filter element manufacturing equipment |
| JP4733340B2 (en) * | 2003-04-24 | 2011-07-27 | 日本エアー・フィルター株式会社 | Foldable air filter and method for manufacturing the same |
| JP4906675B2 (en) * | 2007-10-29 | 2012-03-28 | タピルス株式会社 | Non-woven fabric for air filter and air cleaning filter |
| CN103547351A (en) * | 2011-07-28 | 2014-01-29 | 日东电工株式会社 | Method for forming pleats in filtering member and device for forming pleats |
| CN103764251A (en) * | 2011-08-31 | 2014-04-30 | 大金工业株式会社 | Filter medium for air filter, air filter unit, and method for producing filter medium for air filter |
-
2014
- 2014-05-30 CN CN201410239851.1A patent/CN105214383B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1269852A (en) * | 1997-09-11 | 2000-10-11 | 东丽株式会社 | Fabric |
| CN1292302A (en) * | 1999-10-07 | 2001-04-25 | 大金工业株式会社 | Air filter material, filter assembly and filter unit and manufacturing method of air filter material |
| CN1275420A (en) * | 2000-05-22 | 2000-12-06 | 张国权 | Method for making hardened multi-wrinkle filter material |
| JP4133180B2 (en) * | 2002-01-09 | 2008-08-13 | 日本エアー・フィルター株式会社 | Filter element manufacturing equipment |
| JP4733340B2 (en) * | 2003-04-24 | 2011-07-27 | 日本エアー・フィルター株式会社 | Foldable air filter and method for manufacturing the same |
| JP4906675B2 (en) * | 2007-10-29 | 2012-03-28 | タピルス株式会社 | Non-woven fabric for air filter and air cleaning filter |
| CN103547351A (en) * | 2011-07-28 | 2014-01-29 | 日东电工株式会社 | Method for forming pleats in filtering member and device for forming pleats |
| CN103764251A (en) * | 2011-08-31 | 2014-04-30 | 大金工业株式会社 | Filter medium for air filter, air filter unit, and method for producing filter medium for air filter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112805078A (en) * | 2018-09-28 | 2021-05-14 | 大金工业株式会社 | Air filter medium, filter pack, air filter unit, and method for manufacturing air filter unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105214383B (en) | 2019-09-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7094270B2 (en) | Composite filter and method of making the same | |
| CN102264968B (en) | Nonwoven web and filter media containing partially split multicomponent fibers | |
| CN101730621B (en) | Process for forming a laminate of a nanoweb and a substrate, and filters utilizing the laminate | |
| EP1851046B1 (en) | Filtration media for filtering particulate material from gas streams | |
| EP1198280B1 (en) | Composite filter and method of making the same | |
| JP2008043885A (en) | Filter element, its manufacturing method, and method of application | |
| CN112352129B (en) | Air filter unit and air conditioner | |
| CN110462124B (en) | Spunbonded nonwoven material, object comprising a spunbonded nonwoven material, filter medium, filter element and use thereof | |
| JP4697135B2 (en) | Air filter media | |
| JP2015010313A (en) | Filter medium and manufacturing method thereof | |
| JP2000024426A (en) | Adsorption sheet, its production and air purifying filter | |
| JP3783819B2 (en) | Air purification filter | |
| JP2017113670A (en) | Filter medium for air filter and air filter | |
| JP2014151299A (en) | Filter material for filter and air filter | |
| JP2004105829A (en) | Filter for cleaning air | |
| CN105214383A (en) | Filter material and crease processing method thereof and air purifier air cleaner | |
| EP1260261A1 (en) | Turbine air filter media | |
| JP2014226629A (en) | Electret filter material | |
| CN109648958B (en) | Composite non-woven fabric and preparation method and application thereof | |
| CN110856780A (en) | Air filter medium and air filter | |
| JP3675686B2 (en) | Air cleaning filter | |
| JP6143503B2 (en) | Filter element and manufacturing method thereof | |
| JPH11197423A (en) | Filter unit | |
| JP3947947B2 (en) | Filter media and filter | |
| CN110446810B (en) | Filter medium, filter element, use thereof and filter assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |