KR101195133B1 - Filter medium for bag filter - Google Patents

Abstract

PURPOSE: A filtering material for a bag filter is provided to function as a filter for a dust collecting apparatus such as a plant. CONSTITUTION: A filtering material for a bag filter is composed of a base layer(10), an arranging type nano-fiber layer(20), and a bonding member. The arranging type nano-fiber layer is made of arranging type nano-fiber. A conductive member(24) is attached to the arranging type nano-fiber layer. The base layer is bonded with the arranging type nano-fiber layer using the bonding member. The melting points of materials respectively for the base layer, the bonding member, and the arranging type nano-fiber layer are represented by T1, T2, and T3. T2 is more than T1, and T3 is more than t2.

Description

Filter medium for bag filter {Filter medium for bag filter}

TECHNICAL FIELD This invention relates to the filter medium for bag filters, the manufacturing apparatus of the filter medium for bag filters, the manufacturing method of the filter medium for bag filters, and a bag filter.

Conventionally, the filter medium for bag filters which has the structure which bonded the base material layer with breathability, and the nanofiber layer (called the nanofiber layer for herpes) for trapping dust is known (for example, refer patent document 1). .

FIG. 10 is a view illustrating a conventional filter medium for bag filter 900. As shown in FIG. 10, the conventional bag filter filter material 900 has a structure in which a base material layer 910 having air permeability and a nanofiber layer 920 for herpes are bonded to each other. The conventional bag filter filter material 900 configured as described above has a structure in which the base material layer 910 and the shingles nanofiber layer 920 are bonded to each other, and thus have a high mechanical strength and a high dust trapping ability. It becomes possible to set it as a filter medium. For this reason, the bag filter manufactured using such a filter medium 900 for bag filters has a high dust trapping ability and removes the captured dust suitably, and becomes the outstanding bag filter which can be used for a long time.

Japanese Patent Publication No. 2010-525938

However, this kind of filter medium for bag filters has a problem that static electricity is easily accumulated. For this reason, when a bag filter is manufactured using such a filter medium for bag filters, static electricity accumulates easily in the bag filter, and when dust is removed from the bag filter, the work to remove the captured dust (dust removal) Task) is difficult.

Accordingly, an object of the present invention is to provide a filter medium for bag filters that can facilitate dust removal, and to provide a bag filter medium production apparatus and a bag filter medium manufacturing method capable of producing such a bag filter medium. do. Moreover, an object of this invention is to provide the bag filter which can make dust removal work easy by using such a filter medium for bag filters.

[1] The filter medium for bag filters of the present invention includes a base material layer, a nanofiber layer for herpes composed of nanofibers for herpes, and a bonding member for bonding the base layer and the nanofiber layer for herpes, wherein the herpes nanoparticles are used. A conductor is attached to the fiber, and the substrate has a structure in which the base layer and the herpes nanofiber layer are bonded to the bonding member.

According to the filter medium for bag filters of the present invention, since the conductive material is attached to the nanofibers for herpes, it is possible to make the nanofiber layer for herpes conductive and to electrically ground a predetermined portion of the nanofiber layer for herpes. As a result, static electricity is less likely to be charged in the filter medium for bag filters, and dust removal can be facilitated. In addition, when a conductor is attached to the nanofibers for herpes, in addition to the effect of suppressing the accumulation of static electricity, the effect of allowing the specific type of dust to be adsorbed efficiently is also obtained.

[2] In the filter medium for bag filters of the present invention, the conductor is preferably attached by a conductor deposition method.

As a result, the conductor can be attached so as to cover the entirety of the nanofibers for herpes, so that the nanofiber layer for herpes becomes electrically conductive as a whole.

[3] In the filter medium for bag filters of the present invention, a plurality of types of conductors are used as the conductors, wherein the filter medium for bags filters is used.

Thus, by attaching a plurality of types of conductors to the nanofibers for herpes, an effect of efficiently adsorbing specific dusts corresponding to the plurality of types of conductors is obtained.

[4] In the filter medium for bag filters of the present invention, the melting point of the material constituting the base material layer is "T1", the melting point of the material constituting the bonding member is "T2", and the melting point of the material constituting the nanofiber layer for herpes. When making "T3", it is preferable to satisfy the relationship of "T1> T2" and "T3> T2".

Thereby, the structure which joined the base material layer and the composite nanofiber layer for herpes by the bonding member by thermocompression bonding can be made, At this time, the influence on a base material layer and the nanofiber layer for herpes can be reduced.

[5] In the filter medium for bag filters of the present invention, the melting point (T1) of the material constituting the base material layer, the melting point (T2) of the material constituting the bonding nanofiber layer, and the melting point of the material constituting the nanofiber layer for herpes. (T3) preferably satisfies the relationship of "T1-T2≥10 ° C" and "T3-T2≥10 ° C".

By setting melting | fusing point to a bonding member in this way, a base material layer and the composite nanofiber layer for herpes can be reliably bonded by a bonding member, hardly affecting a base material layer and the nanofiber layer for herpes.

[6] In the filter medium for bag filters of the present invention, the shingles nanofiber layer is preferably provided with a cover layer for protecting the shingles nanofiber layer on the side opposite to the joining surface of the joining member.

By setting it as such a structure, the nanofiber layer for herpes can be protected, and when the bag filter is manufactured using the filter medium for bag filters of this invention, the said bag filter can be extended long life.

[7] In the filter medium for bag filters of the present invention, the nanofiber layer for shingles is formed by an electrospinning method, and the joining member is formed as a joining nanofiber layer composed of joining nanofibers, and the joining nanofiber layer is electrolytic It is preferable that it is formed by the spinning method.

Since the nanofiber layer for herpes and the nanofiber layer for joining are formed by the field spinning method, it can be used as a filter medium for bags filters which is excellent in breathability and has a high dust trapping ability.

[8] In the filter medium for bag filters of the present invention, the density of the bonding nanofiber layer is preferably in the range of 0.01 g / m 2 to 20 g / m 2.

By setting the density amount of the bonding nanofiber layer of the bonding nanofiber layer within such a range, the base layer and the shingles nanofibrous layer are peeled off because they have a sufficient amount of bonded nanofibers to bond the base layer and the herpes nanofiber layer. In addition, since there is no quantity enough to fill the clearance gap of the filter medium for bag filters, sufficient air permeability can be maintained.

[9] In the filter medium for bag filters of the present invention, when the average diameter of the nanofibers for shingles is set to "D1", and the average diameter of the bonding nanofibers is set to "D2", "0.01≤D2 / D1≤0.50 It is desirable to satisfy the relationship of "."

By setting it as such a structure, when the bonding nanofiber layer bonds a base material layer and the herpes nanofiber layer, the bonding state of a base material layer and the herpes nanofiber layer can be made suitable. That is, when "D2 / D1" is less than 0.01, the base material layer and the nanofiber layer for herpes cannot be fully bonded, and when "D2 / D1" exceeds 0.50, the average diameter of the nanofibers for joining becomes large and it is for a bag filter. Since the air permeability of a filter medium may be reduced, it is preferable to satisfy the relationship of "0.01 <= D2 / D1 <0.50".

[10] The filter medium manufacturing apparatus for bag filters of the present invention is a filter medium manufacturing apparatus for bag filters for producing the filter medium for bags filters described in [1], comprising a nanofiber layer for herpes composed of a base material layer and nanofibers for herpes, A nanofiber composite manufacturing apparatus including a bonding member for bonding the substrate layer and the nanofiber layer for shingles to produce a nanofiber composite having a structure in which the substrate layer and the nanofiber layer for shingles are bonded to the bonding member; And a conductor attachment device for attaching at least one kind of conductor to the shingles nanofibers.

By setting it as such a structure, the filter medium for bag filters of the said invention can be manufactured.

[11] In the filter medium manufacturing apparatus for bag filter of the present invention, the nanofiber composite production apparatus is thermocompression-bonded in a state where the bonding member is interposed between the base layer and the nanofiber layer for herpes. It is preferable to provide the bonding apparatus which joins the nanofiber layer for herpes.

By setting it as such a structure, the said base material layer and the said nanofiber layer for herpes can be bonded by a high strength with a bonding member.

[12] In the filter medium manufacturing apparatus for bag filter of the present invention, the conductor attachment device is a conductor deposition device, and the conductor deposition device is preferably attached to the nanofiber layer for shingles by the conductor deposition device.

As a result, the conductor can be attached to the entirety of the nanofibers for herpes in a particle shape, and the entirety of the nanofibers for herpes is covered with the conductor, whereby the nanofiber layer for herpes becomes electrically conductive as a whole.

[13] In the filter medium manufacturing apparatus for a bag filter of the present invention, a cover layer forming apparatus for forming a cover layer for protecting the shingles nanofiber layer on the side opposite to the bonding surface of the bonding member of the shingles nanofiber layer is further provided. It is preferable to provide.

With such a configuration, a cover layer can be formed on the nanofiber layer for herpes, thereby protecting the nanofiber layer for herpes, and when the bag filter is produced using the filter medium for bag filters of the present invention, the bag The filter can be extended.

[14] In the filter medium manufacturing apparatus for bag filter of the present invention, the joining member is formed as a joining nanofiber layer made of joining nanofibers, and the nanofiber composite manufacturing apparatus is a polymer material as a raw material of the joining nanofibers. A structure in which the substrate layer and the bonding nanofiber layer are laminated by forming the bonding nanofiber layer made of the bonding nanofiber on the substrate layer by an electric field spinning method using a first polymer solution containing The first nanofiber composite phase is formed by a field emission method using a first field spinning device for producing a first nanofiber composite having a second polymer solution containing a polymer material which is a raw material of the nanofibers for herpes. The first nanoisland by forming a nanofibrous layer for herpes consisting of the nanofibers for herpes on Preferably it includes a second field emission device for generating a second composite nano-fiber with the composite laminate structure and the nano-fibrous layer for the shingles.

Thus, by using a bonding member as a nanofiber layer for joining, it can be set as the filter medium for bag filters excellent also in breathability and strength. Moreover, since the nanofiber composite manufacturing apparatus is comprised with the said 1st field emission apparatus and the 2nd field emission apparatus, the filter medium for bag filters of this invention can be manufactured efficiently, and the bag filter of stable quality Can produce large quantities of filter media.

[15] In the method for producing a filter medium for bags filters of the present invention, a method for producing a bag filter medium for producing a filter medium for bags as described in [1], comprising: a nanofiber layer for herpes composed of a base material layer and nanofibers for herpes, A nanofiber composite manufacturing process comprising a bonding member for bonding the substrate layer and the herpes nanofiber layer, and a nanofiber composite having a structure in which the substrate layer and the herpes nanofiber layer are bonded to the bonding member; And a conductor attaching step for attaching the conductor to the nanofibers for herpes.

By performing such a process, the filter medium for bag filters of the said invention can be manufactured.

[16] In the method for producing a filter medium for a bag filter of the present invention, in the manufacturing method of the nanofiber composite, the substrate layer and the substrate are thermocompressed with the bonding member interposed between the substrate layer and the nanofiber layer for shingles. It is preferable to include the bonding process of bonding the nanofiber layer for herpes.

Thereby, the said base material layer and the said nanofiber layer for herpes can be bonded by a high strength with a bonding member.

[17] In the method for producing a filter medium for a bag filter of the present invention, in the conductor attaching step, the conductor is preferably attached to the nanofiber layer for shingles by a conductor deposition apparatus.

As a result, the conductor can be attached to the entirety of the nanofibers for herpes in a particle form, and the entirety of the nanofibers for herpes is covered with the conductor, whereby the nanofiber layer for herpes becomes electrically conductive as a whole.

[18] In the method for producing a filter medium for a bag filter of the present invention, a cover layer forming step for forming a cover layer for protecting the shingles nanofiber layer on the side opposite to the bonding surface of the bonding member of the shingles nanofiber layer is further performed. It is desirable to have.

By performing such a cover layer formation process, a cover layer can be formed in the nanofiber layer for shingles. Thereby, the nanofiber layer for herpes can be protected, and when a bag filter is manufactured using the filter medium for bag filters of this invention, the said bag filter can be extended long life.

[19] In the method for manufacturing a filter medium for a bag filter of the present invention, the joining member is formed as a joining nanofiber layer made of joining nanofibers, and the nanofiber composite manufacturing step includes a polymer material serving as a raw material of the joining nanofibers. A structure in which the substrate layer and the bonding nanofiber layer are laminated by forming the bonding nanofiber layer made of the bonding nanofiber on the substrate layer by an electric field spinning method using a first polymer solution containing. The first nanofiber composite phase by a field emission method using a first field spinning process for producing a first nanofiber composite having a second polymer solution containing a polymer material which is a raw material of the nanofibers for herpes; The first nanofiber composite by forming a nanofibrous layer for herpes consisting of the nanofibers for herpes on And a second field spinning process of generating a second nanofiber composite having a structure in which the nanofiber layer for herpes is laminated.

Thus, by using a bonding member as a nanofiber layer for joining, it can be set as the filter medium for bag filters excellent also in air permeability and strength. In addition, the nanofiber composite manufacturing process includes the first field spinning process and the second field spinning process to efficiently produce the filter medium for bag filters of the present invention, and to mass produce the bag filter medium of stable quality. Can be.

[20] The bag filter of the present invention is manufactured using the filter medium for bag filters according to any one of [1] to [9].

Thus, by using the filter medium for bag filters in any one of [1]-[9], the bag filter of this invention has the same effect as the filter medium for bag filters in any one of [1]-[9]. . Such a bag filter can be used in a wide range, and it becomes suitable as a filter of dust collectors, such as a plant.

The present invention provides a filter medium for a bag filter that can facilitate a dust removal operation, and further provides a bag filter medium production apparatus and a method for producing a bag filter filter medium capable of producing such a bag filter medium. Moreover, this invention provides the bag filter which can make dust removal work easy by using such a filter medium for bag filters.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure shown for demonstrating the filter medium 1A for bag filters which concerns on Embodiment 1. FIG.
FIG. 2 is a diagram for explaining the filter medium manufacturing apparatus 100A for a bag filter according to the first embodiment.
It is a flowchart for demonstrating the manufacturing method of the filter medium for bag filters which concerns on Embodiment 1. FIG.
It is a schematic diagram for demonstrating each process of the manufacturing method of the filter medium for bags filters which concerns on Embodiment 1. FIG.
FIG. 5 is a diagram for explaining a bag filter 500A manufactured using the filter medium for bag filter 1A according to the first embodiment.
FIG. 6 is a diagram for explaining pulse jet cleaning of the bag filter 500A according to the first embodiment.
FIG. 7: is a figure for demonstrating the filter medium 1B for bag filters which concerns on Embodiment 2. As shown in FIG.
FIG. 8 is a view for explaining the cover layer forming apparatus 103 of the filter medium manufacturing apparatus 100B for a bag filter according to the second embodiment.
9 is a flowchart for explaining a method for manufacturing a filter medium for a bag filter according to the first embodiment.
FIG. 10 is a view illustrating a conventional filter medium for bag filter 900.

Hereinafter, embodiments of the present invention will be described.

[Embodiment 1]

1. Configuration of the bag filter medium 1A according to the first embodiment

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure shown for demonstrating the filter medium 1A for bag filters which concerns on Embodiment 1. FIG. Fig. 1A is a perspective view of a bag filter filter medium 1A in a roll shape wound around a core material (not shown), and Fig. 1B is a filter medium filter bag 1A. 1C is an enlarged cross-sectional view of FIG. 1C, which is an enlarged view of the range indicated by the broken line circle P in FIG. 1B. In addition, all the figures which show a structure etc. are schematic diagrams, and they do not necessarily correspond with relationship, such as an actual size and thickness.

As shown in FIG. 1, the filter medium for bags filters 1 which concerns on Embodiment 1 consists of the base material 10 with air permeability, and the nanofibers 22 for herpes used for herpes, and is a gas (atmosphere). Etc.) and a bonding member 30 for bonding the base material layer 10 and the nanofibrous layer 20 for herpes, which can trap fine dust, and the base material layer 10. ) And the nanofibrous layer 20 for herpes are bonded to each other by the bonding member 30.

The nanofiber layer 20 for shingles has a structure in which a conductor 24 is attached to the shingles nanofiber 22 by vapor deposition (for example, vacuum vapor deposition). The bonding member 30 is formed as a bonding nanofiber layer made of bonding nanofibers in the filter medium for bag filter 1A according to the first embodiment. Hereinafter, the "bonding member 30" is also called "the nanofiber layer 30 for bonding."

And the base material layer 10, the bonding nanofiber layer 30, and the shingles nanofiber layer 20 are laminated | stacked in this order, and at least one part of the bonding nanofiber of the bonding nanofiber layer 30 melt | dissolved. This has a structure in which the base material layer 10 and the herpes nanofiber layer 20 are bonded to the bonding nanofiber layer 30. In addition, the part which was grayed out in FIG.1 (c) shows that at least one part of the bonding nanofiber is melted. Thus, at least one part of the bonding nanofiber melts and the base material layer 10 and the shingling nanofiber layer 20 will be in the state joined by the bonding nanofiber layer 30.

The base material layer 10 takes the form of an elongate sheet, and it can use what is breathable, such as a nonwoven fabric, woven fabric, a knitted fabric, and paper which consist of various materials. In the embodiment, a nonwoven fabric made of PTFE having an average diameter of 1000 nm is used as the base layer 10. In FIG.1 (c), what is shown with the code | symbol "12" is the fiber of PTFE in the base material layer 10. FIG. The density of the base material layer 10 exists in the range of 350 g / m <2> -800 g / m <2>, for example. Moreover, the air permeability of the base material layer 10 exists in the range of 0.5 cm <3> / cm <2> / s-50 cm <3> / cm <2> / s, for example. The base material layer 10 can use the thing of 10 m-10 km in length, for example. Moreover, the thing which is not an elongate sheet (for example, the thing of single shape) can also be used as a base material layer.

The nanofiber layer 20 for herpes consists of the nanofibers 22 for herpes within the range of 50 nm-1000 nm in average diameter, More preferably, it exists in the range of 50 nm-500 nm. In addition, the melting point of the shingles nanofibers 22 is 100 degrees or more. In the herpes nanofiber layer 20, the conductor 24 covers the entirety of the herpes nanofiber 22 by vapor deposition (see FIG. 1C). In addition, since FIG. 1C is an enlarged view, the particle | grain shaped conductor 24 is affixed on the whole shingles nanofiber 22, but as a whole, the conductor 24 is a shingles nanofiber. It is in the state which coat | covers 22. For this reason, the nanofiber layer 20 for herpes becomes electroconductive as a whole. In addition, the density amount of the herb nanofiber layer 20 exists in the range of 0.05 g / m <2> -50g / m <2>, for example, Preferably it exists in the range of 0.1 g / m <2> -10g / m <2>.

Moreover, as a material which comprises the nanofibers 22 for herpes, for example, polyvinylidene fluoride (PVDF), polylactic acid (PLA), polypropylene (PP), polyvinyl acetate (PVAc), polyethylene terephthalate (PET) ), Polybutylene terephthalate (PBT), polyethylene naphthalate (PEN), polyamide (PA), polyurethane (PUR), polyvinyl alcohol (PVA), polyacrylonitrile (PAN), polyetherimide (PEI) ), Polycaprolactone (PCL), polylactic acid glycolic acid (PLGA), silk, cellulose, chitosan, and other polymers can be used, and a material in which two or more polymers are mixed can also be used.

In addition, the conductor 24 is not particularly limited as long as it is a material having excellent conductivity. Examples of the conductor used in the first embodiment and the second embodiment described later include conductors made of metal and conductors made of carbon. . Examples of the metal include aluminum, copper, tin, zinc, nickel, chromium, titanium, silicon, lead, molybdenum, iron, gold, silver, platinum, palladium, copper alloys, aluminum alloys, titanium alloys and iron alloys. Various metals, such as these, are mentioned. In addition, a plurality of metals may be used, or carbon may be added.

The bonding nanofiber layer 30 and the bonding nanofiber 32 are made of a resin having a thermal bonding property (for example, a thermoplastic resin). In addition, the average diameter of the bonding nanofibers 32 constituting the bonding nanofiber layer 30 is preferably in the range of 50 nm to 1000 nm, for example, but the average diameter smaller than that of the shingles nanofibers 22 is used. Have That is, when the average diameter of the shingles nanofibers 22 is set to "D1" and the average diameter of the bonding nanofibers 32 is set to "D2", the relationship of "0.01≤D2 / D1≤0.50" is satisfied. It is desirable to.

In addition, melting | fusing point of the material (resin which has thermal bonding property) which comprises the bonding nanofiber layer 3 is "T1" of melting | fusing point of the material which comprises the base material layer 10, and the material which comprises the bonding nanofiber layer 30. When the melting point is "T2" and the melting point of the material constituting the shingles nanofiber layer 20 is "T3", the relationship of "T1> T2" and "T3> T2" is satisfied, that is, "T1". -T2≥10 ° C ", and the relationship of" T3-T2≥10 ° C "is satisfied.

The density amount of the nanofiber layer 30 for bonding is, for example, in the range of 0.01 g / m 2 to 20 g / m 2, and preferably in the range of 0.02 g / m 2 to 5 g / m 2. In addition, it is preferable to make thickness of the nanofiber layer 30 for joining into the range of 0.1 micrometer-5 micrometers, for example.

Examples of the material constituting the bonding nanofibers 32 of the bonding nanofiber layer 30 include polyvinylidene fluoride (PVDF), polylactic acid (PLA), polypropylene (PP), and polyvinyl acetate (PVAc). , Polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyethylene naphthalate (PEN), polyamide (PA), polyurethane (PUR), polyvinyl alcohol (PVA), polyacrylonitrile (PAN) And various polymers such as polyetherimide (PEI), polycaprolactone (PCL), and polylactic acid glycolic acid (PLGA) can be used, and a material obtained by mixing two or more polymers can also be used. If the polymer has a different melting point, the same kind of polymer as that of the nanofibers 22 for herpes may be used.

2.Configuration of Apparatus 100A for Manufacturing Filter Media for Bag Filters According to Embodiment 1

FIG. 2 is a diagram for explaining the manufacturing apparatus 100A of the filter medium for bag filters according to the first embodiment. The apparatus 100A for manufacturing the filter medium for bag filters according to Embodiment 1 (hereinafter referred to as the apparatus for manufacturing a filter medium for bags filter 100A) is a nanofiber composite production apparatus 101 and a conductor deposition apparatus as a conductor attachment device. (A) is a front view which shows the structure of the nanofiber composite manufacturing apparatus 101, and FIG. 2 (b) is a front view of the structure of the conductor vapor deposition apparatus 102 provided. In FIG. 2, some members are shown as sectional drawing.

As shown in FIG. 2A, the nanofiber composite production apparatus 101 includes the conveying apparatus 110, the first field radiating apparatus 121, the second field radiating apparatus 122, and the bonding apparatus 130. ).

The conveying apparatus 110 is the feeding roller 111 which injects the base material layer 10, the winding roller 112 which winds the filter medium 1A 'for a bag filter (described later) and the base material layer which passed the bonding apparatus 130. Tension rollers 113 and 118 for adjusting the pull of the 10 and the auxiliary roller 114 are provided. The feeding roller 111 and the winding roller 112 have a structure of being driven by rotation by a drive motor (not shown).

The first field radiating device 120 forms the bonding nanofiber layer 30 made of the bonding nanofibers 32 on the substrate layer 10 being conveyed at a predetermined speed by the conveying device 110. A first nanofiber composite 40 (see FIG. 4B) having a structure in which the base layer 10 and the bonding nanofiber layer 30 is laminated is produced.

The second field radiating device 120 forms a herpes nanofiber layer 20 made of the herpes nanofibers 22 on the first nanofiber composite 40 produced by the first field radiating device 120. As a result, a second nanofiber composite 50 having a structure in which the first nanofiber composite 40 and the nanofiber layer 20 for herpes is stacked is formed (see FIG. 4C).

The first field radiating device 121 and the second field radiating device 122 have different types of polymer solutions and the like, but basically have the same configuration, and thus, the structure of the first field radiating device 121 is here. Explain about. The same components are denoted by the same reference numerals for the first field radiating device 121 and the second field radiating device 122.

As shown in FIG. 2A, the first field radiator 121 includes a housing body 200, a nozzle unit 210, a polymer solution supply unit 230, a collector 250, and a power supply unit 260. And an auxiliary belt device 270. The first field radiating device 121 discharges the polymer solution while overflowing the polymer solution from the discharge ports of the plurality of upper direction nozzles 220 to form the bonding nanofiber layer 30 on the base layer 1.

The housing body 200 is made of a conductive member and grounded. The nozzle unit 210 has a plurality of upward nozzles 220. Although the nozzle unit having various sizes and various shapes can be used for the nanofiber composite manufacturing apparatus 101, in the first embodiment, the nozzle unit 210 includes a rectangle (square) of 0.5 m to 3 m on one side as viewed from the top surface. It has a block shape with the size shown as).

The upper nozzle 220 is a nozzle for discharging the polymer solution supplied from the polymer solution supply unit 230 upwardly from the discharge port. As the material constituting the upper direction nozzle 220, a conductor can be used, for example, copper, stainless steel, aluminum, or the like can be used.

The upper nozzles 220 are arranged at pitches of 1.5 cm to 6.0 cm, for example. The number of the upper direction nozzles 220 can be 36 pieces (6 * 6 pieces when it arranges in vertical or equal number)-21904 pieces (148 * 148 pieces when it is arranged in vertical and horizontal same number), for example. .

In addition, although Embodiment 1 uses the upward direction nozzle 220 as a nozzle, this invention is not limited to this. As a nozzle, a horizontal nozzle may be used and a downward direction nozzle may be used.

The polymer solution supply unit 230 includes a raw material tank 232 and a polymer solution supply device 234. The raw material tank 232 stores a polymer solution (called a first polymer solution) that becomes a raw material of the bonding nanofiber layer 30. The raw material tank 232 has a stirring device 233 therein for preventing separation or solidification of the first polymer solution. In addition, a pipe 236 of the first polymer solution supply device 234 is connected to the raw material tank 232.

The polymer solution supply device 234 includes a pipe 236 for passing the first polymer solution and a valve 238 for controlling the supply operation, and the nozzle unit 210 receives the first polymer solution stored in the raw material tank 232. To feed. In addition, although the polymer solution supply apparatus 234 should just be at least 1 with respect to one nozzle unit, there may exist more than one.

The collector 250 is disposed above the nozzle unit 210. The collector 250 is made of a conductor, and is mounted to the housing 200 through the insulating member 252 as shown in FIG. 2.

The power supply 260 applies a high voltage between the upward nozzle 220 and the collector 250. The anode of the power supply unit 260 is connected to the collector 250 and the cathode of the power supply unit 260 is connected to the nozzle unit 210 through the housing body 200.

The auxiliary belt device 270 has an auxiliary belt 272 which rotates in synchronization with the conveyance speed of the base material layer 10, and the five auxiliary belt rollers 274 which help the rotation of the auxiliary belt 272. One or two or more of the auxiliary belt rollers 274 are driving rollers, and the remaining auxiliary belt rollers are driven rollers. Since the auxiliary belt 272 is provided between the collector 250 and the base material layer 10, the base material layer 10 is smoothly conveyed without being pulled by the collector 250 to which a positive high voltage is applied.

The second field radiating device 122 also has the same configuration as the first field radiating device 121. However, in the raw material tank 232 of the polymer solution supplying part 230 of the second field radiating device 122, a polymer solution (called a second polymer solution) serving as a raw material of the nanofiber layer 20 for shingles is stored. 1 is different from the field emission device 121.

The bonding device 130 is disposed on the output side of the second field radiating device 122, and pressed (called thermocompression) while heating the second nanofiber composite 50 formed by the second field radiating device 122. , The base layer 10 and the herpes nanofiber layer 20 are bonded through the nanofiber layer 30 for bonding.

As such a bonding apparatus 130, the bonding apparatus provided with the calender roll 131 can be illustrated. Moreover, as a means for heating, what put the heater function (not shown) in the calender roll 131 can be used, for example, In addition, for example, a resistance heater, an infrared heater, a combustion heater, a dryer, a hot air generator It is also possible to use these. In addition, although the calender roll 131 illustrated the structure which pinches | interposes the 2nd nanofiber composite 50 by the roller of one upper and lower in FIG.2 (a), it is not limited to such a structure, and the roller of two upper and lower You can use calendar rolls with different configurations, such as the presence of.

The nanofiber composite in a state in which the second nanofiber composite 50 is thermocompressed can be manufactured by the nanofiber composite manufacturing apparatus 101 having the configuration shown in FIG. 2A. The nanofiber composite in the state in which the fiber composite 50 is thermocompressed can be used as a filter medium for a bag filter. However, in Embodiment 1, since the filter medium for a bag filter is being manufactured at this stage, it is referred to as "a filter medium for bag filters (1A '). It is called.

As shown in FIG. 2B, the conductor deposition apparatus 102 includes an input roller 310 for introducing a bag filter medium 1A 'produced by the nanofiber composite production apparatus 101, and Conductor deposition section 320 for depositing conductor 24 (see FIG. 1C) on shingles nanofibers 22 of bag filter medium 1A 'fed from feed roller 310. And a winding roller 330 for winding a bag filter medium (the bag filter medium is called 1A filter bag filter medium) in a state where the conductor 24 is deposited, a tension roller 340, and an auxiliary It has a roller 350.

The conductor 24 can be deposited on the nanofiber layer 20 for shingles by the conductor deposition apparatus 102 configured as described above. Thereby, the filter medium for bag filters 1A shown in FIG. 1 is wound by the winding roller 330. As shown in FIG. In addition, in the first embodiment, the filter medium for bag filters 1A is a finished product as the filter medium for bags.

3.Explanation of the manufacturing method of the filter medium for bag filters which concerns on Embodiment 1

It is a flowchart for demonstrating the manufacturing method of the filter medium for bag filters which concerns on Embodiment 1. FIG. It is a schematic diagram shown in order to demonstrate each process of the filter medium manufacturing method for bag filters which concerns on Embodiment 1. FIG.

As shown in FIG. 3, the method for producing a filter medium for a bag filter according to Embodiment 1 includes a base layer preparation step (S1), a first field spinning step (S2) for generating the first nanofiber composite 40, Bonding the base layer 10 and the herpes nanofiber layer 20 by heating the second field spinning process S3 for producing the second nanofiber composite 50 and the second nanofiber composite 50. Bonding step (S4) for bonding with the nanofiber layer 30 and conductor attaching step (S5) for attaching the conductor 24 to the nanofibers 22 for herpes of the nanofiber layer 20 for herpes by vapor deposition. It includes. Hereinafter, each process of the manufacturing method of the filter medium for bag filters 1A which concerns on Embodiment 1 with reference to FIG. 3 and FIG. 4 is demonstrated.

( Substrate layer  Preparation process S1 ))

The base material layer preparation process (S1) is a process of preparing the base material layer 10, and FIG. 4 (a) is a figure which shows the base material layer 10. FIG. The base material layer 10 is comprised as a long sheet, the said long sheet is set to the conveying apparatus 110, and the predetermined | prescribed conveyance of the base material layer 10 from the feed roller 111 toward the winding roller 112 after that is carried out. While conveying at a speed, first, the first field spinning process is performed by the first field spinning apparatus 121.

(First Field  Spinning process ( S2 ))

The first field spinning step S2 is a step of generating the first nanofiber composite 40. That is, the field spinning method using a first polymer solution containing a polymer material that is a raw material of the bonding nanofibers 32. By forming the bonding nanofiber layer 30 consisting of the bonding nanofibers 32 on the substrate layer 10 by a layer having a structure in which the base layer 10 and the bonding nanofiber layer 30 are laminated. One nanofiber composite 40 is produced. 4B shows the first nanofiber composite 40 produced by the first field spinning process S2. In addition, the first polymer solution is supplied to the nozzle unit 210 through the polymer solution supply unit 230.

(Second Field  Spinning process ( S2 ))

The second field spinning step S3 is a step of producing the second nanofiber composite 50. That is, the field spinning method using a second polymer solution containing a polymer material which is a raw material of the nanofibers 22 for shingles. The first nanofiber composite 40 and the herpes nanofiber layer 20 are formed on the first nanofiber composite 40 by forming the herb nanofiber layer 20 composed of the herpes nanofibers 22. The second nanofiber composite 50 having the laminated structure is produced. FIG. 4C shows the second nanofiber composite 50 produced by the second field spinning process S3.

In addition, the second polymer solution is supplied to the nozzle unit 210 through the polymer solution supply unit 230 of the second field radiating device 122.

Joining process ( S4 ))

Bonding step (S4) is a thermal bonding of the second nanofiber composite 50 produced by the second field emission device 122 by bonding the base layer 10 and the shingles nanofiber layer 20 to the nanofiber layer 30 for bonding ) Is the process of bonding through.

The base material layer preparation step (S1), the first electric field spinning step (S2), the second electric field spinning step (S3), the bonding step (S4), the base material layer 10 and the shingles nanofiber layer 20, the bonding member ( A nanofiber composite manufacturing step of manufacturing a nanofiber composite having a structure bonded by a bonding nanofiber layer 30), and a filter medium (1A ') for a bag filter as a nanofiber composite is produced by this nanofiber composite manufacturing step. Can be.

( Conductor  Deposition process ( S5 ))

The conductor deposition step (S5) is a step of attaching the particulate conductors 24 to the shingles nanofibers 22 by vapor deposition on the shingles nanofibers 22 of the shingles nanofiber layer 20. By this conductor deposition step (S5), the shingles nanofibers 22 are in a state in which the conductors 24 are coated (see FIG. 1C), whereby the shingles nanofiber layer 20a is overall. It has conductivity.

In addition, as the conductor 24 used in Embodiment 1 and Embodiment 2 mentioned later, said various metal and carbon can be used, and it is preferable to use multiple types of conductor. When 1 A of bag filter mediums are used as a bag filter by attaching several types of conductors to the nanofibers 22 for herpes, the effect which can adsorb | suck the specific dust corresponding to each conductor efficiently Obtained. In this way, the attachment of the conductor to the shingles nanofibers 22 can achieve the effect of effectively adsorbing various kinds of dust in addition to the effect of suppressing the accumulation of static electricity.

Thus, by carrying out not only said base material layer preparation process (S1), a 1st field emission process (S2), a 2nd field emission process (S3), but also a bonding process (S4), conductor deposition process (S5) is performed. The filter medium 1A for bag filters (refer FIG. 1) which concerns on the form 1 can be manufactured.

Hereinafter, the spinning conditions of Embodiment 1 are shown as an example.

The polymer material for producing the first polymer solution and the polymer material for producing the second polymer solution are the same as the polymer materials exemplified in "1. Configuration of the bag filter medium 1A according to the first embodiment". Omit.

As a solvent for preparing the first polymer solution and the second polymer solution, for example, dichloromethane, dimethylformamide, dimethyl sulfoxide, methyl ethyl ketone, chloroform, acetone, water, formic acid, acetic acid, cyclohexane, THF Etc. can be used. A plurality of kinds of solvents may be mixed and used. The first polymer solution and the second polymer solution may also contain additives such as conductivity improvers.

A conveyance speed can be set, for example at 0.2 m / min-100 m / min, and it is preferable to set it as 1 m / min-80 m / min. The voltage applied to the collector 250 and the nozzle unit 210 can be set to 10 kV to 80 kV, and preferably set to 40 kV to 60 kV. The temperature of the spinning zone can be set to 25 ° C, for example. The humidity in the radiation zone can be set at 30%, for example.

According to the filter medium for bag filters 1A according to Embodiment 1, the particle-shaped conductor 24 adheres to almost the entire structure on the shingles nanofibers 22 of the shingles nanofiber layer 20 (Fig. 1 (c)), whereby the shingles nanofiber layer 20 is in a state where the conductor 24 covers the shingles nanofibers 22. For this reason, the whole of the herb nanofiber layer 20 becomes electroconductive, and by electrically grounding a predetermined part of the herb nanofiber layer 20, the whole of the herb nanofiber layer 20 is electrically grounded. . This makes it difficult to accumulate static electricity in the nanofibrous layer 20 for shingles.

In addition, according to the filter medium for bag filters 1A according to the first embodiment, the herb nanofiber layer 20 made of the breathable substrate layer 10, the herpes nanofibers 22, and the bonding nanofibers 32 And a structure in which the base layer layer 10 and the herpes nanofibrous layer 20 are bonded to the bonding nanofiber layer 30, which is excellent in durability and high. It has mechanical strength, high herpes capacity and high air permeability.

4. Description of bag filter 500A using filter medium 1A for bag filter according to the first embodiment.

FIG. 5 is a diagram for explaining a bag filter 500A manufactured using the filter medium for bag filter 1A according to the first embodiment. FIG. 5A is an external perspective view of the bag filter 500A, and FIG. 5B is a view showing the frame 520 used for the bag filter 500A. FIG. 6 is a diagram for explaining pulse jet cleaning of the bag filter 500A according to the first embodiment.

As shown in Fig. 5, the bag filter 500A has a cylindrical bag filter main body 510 made of the bag filter medium 1A according to the first embodiment, and the bag filter main body 510 maintains a cylindrical shape. It consists of a frame 520 to make it possible.

As shown in Fig. 5A, the bag filter main body 510 has a cylindrical encapsulation shape, one end face (upper end face) 511 is an opening face, and the other end face (lower end face) 512 is formed. ) Is at the bottom. Moreover, the nanofiber layer 20 for shingles of the filter medium for bag filters 1A becomes a surface side (introduction side of the gas used for filtration).

As shown in (b) of FIG. 5, for example, the frame 520 is arranged with a plurality of circular rings 521 spaced apart from each other so that the center axes of the circular rings coincide with each other, and the plurality of circular rings 521 is disposed. ) Is supported by a plurality of support bars 522.

The bag filter 500A configured as described above is very suitable as a filter of a dust collector (not shown) such as a plant. In this case, the gas (air) to be filtered is blown from the nanofiber layer 20 for shingles of the bag filter 500A along the arrow indicated by the solid line in FIG. 5, and the dust contained in the air is used for the shingles. It is filtered by being trapped by the nanofiber layer 20, passes through the inner space portion of the bag filter 500A, and is discharged as filtered air from the upper surface 511.

When a large amount of dust is captured by using the bag filter 500A for a predetermined time, a work for removing the captured dust (called a dust removal operation) is performed. When dust removal operation | movement is performed, as shown in FIG. 6, "pulsejet cleaning" by blowing compressed air from the compressed air injection nozzle 530 is performed.

At this time, the compressed air injected from the compressed air injection nozzle 530 is the inner space of the bag filter 500A from the outlet (top surface 511 of the bag filter main body 510) of the filtered air of the bag filter 500A. It flows through the part and passes through the bag filter main body 510 (path following the arrow shown by the broken line of FIG. 5). Moreover, since the flow direction of compressed air is a direction opposite to the flow direction of the air used as filtration object (the arrow direction shown by the solid line of FIG. 5), the dust captured by the bag filter 500A can be removed efficiently.

In the case of the pulse jet cleaning shown in FIG. 6, when the bag filter 500A is attached to a dust collector (not shown), the pulse filter cleaning shown in FIG. 6 is removed by separating the bag filter 500A from the dust collector. The bag filter may be provided in a state where the bag filter 500A is attached to the dust collector, and a mechanism (called a pulse jet cleaning mechanism) for performing pulse jet cleaning on the dust collector is provided. 500 A may be pulse-jet-cleaned.

Since the bag filter 500A comprised in this way uses the filter medium for bag filters 1A which concerns on Embodiment 1, it has the effect which the filter medium for bag filters 1A which concerns on Embodiment 1 has. In particular, since the conductor 24 is attached to the whole by the vapor deposition on the nanofibers 22 for the shingles of the shingles nanofiber layer 20 constituting the filter medium for bag filter 1A (Fig. 1 ( c)) and the surface of the filter medium 1A for bag filter (the nanofiber layer for shingles) by electrically grounding a predetermined portion of the surface of the bag filter medium 1A (herpes nanofiber layer 20). Almost all of 20) are electrically grounded. As a result, static electricity is less likely to accumulate in the filter medium for bag filters, and the captured dust can be easily removed.

In the shingles nanofiber layer 20, since the captured dust hardly enters the shingles nanofiber layer 20, when the bag filter 500A is pulse jet-washed, the shingles can be efficiently removed. have.

[Embodiment 2]

1. Configuration of the bag filter medium 1B according to the second embodiment

FIG. 7 is a diagram for explaining the bag filter medium 1B according to the second embodiment. FIG. 7A is a perspective view of the bag filter medium 1B wrapped around a core material (not shown), and FIG. 7B is an enlarged view of the bag filter medium 1B. It is sectional drawing, FIG.7 (c) is a figure which expands and shows further the range shown by the broken line circle P of FIG.7 (b). In addition, all the figures which show a structure etc. are schematic diagrams, and they do not necessarily correspond with relationship, such as an actual size and thickness.

The filter medium for bags filter 1B according to the second embodiment is different from the filter medium for bags filter 1A according to the first embodiment, and the surface of the nanofiber layer 20 for shingles (bonding surface of the nanofiber layer 30 for bonding). (The opposite side) is a cover layer 60 for protecting the shingles nanofiber layer 20 is formed, the other components are the same as the filter medium for bag filter 1A according to Embodiment 1, The same components are given the same reference numerals.

Since the cover layer 60 protects the nanofibrous layer 20 for herpes, a member having a larger porosity than the nanofibrous layer 20 for herpes (called the cover layer forming member 61) may be used. Can be. In Embodiment 2, the cover layer forming member 61 shall be formed from glass fiber. The density of the cover layer 60 is in the range of 20g / m <2> -100g / m <2>. In addition, the thickness of the cover layer 60 exists in the range of 1-10 micrometers. In addition, the porosity of the cover layer 60 is larger than the porosity of the nanofiber layer 20 for shingles. In addition, when melting | fusing point of the material of the cover layer 60 is made into "T4", and melting | fusing point of resin with thermal bonding which comprises the nanofiber layer 30 for joining is made into "T2", the relationship of "T4> T2" Is satisfied, that is, the relationship of &quot; T4-T2 &gt;

Since the cover layer 60 is composed of such a member (the cover layer forming member 61), the shingles nanofiber layer 20 can be protected without degrading the shingles of the shingles nanofiber layer 20. . In particular, since large dust and the like is likely to be captured by the cover layer 60, it is less likely that large dust comes into direct contact with the herpes nanofiber layer 20, thereby protecting the herpes nanofiber layer 20, Degradation of the nanofiber layer 20 for herpes can be suppressed. Thereby, the nanofiber layer 20 for herpes can be extended.

2.Configuration of filter medium manufacturing apparatus 100B for bag filter according to Embodiment 2

The filter medium manufacturing apparatus 100B for a bag filter (hereinafter, referred to as a filter medium manufacturing apparatus 100B for a bag filter) according to the second embodiment is a nanofiber composite production apparatus 101, a conductor deposition apparatus 102, and a cover layer. It is comprised by the forming apparatus 103. In addition, since the nanofiber composite manufacturing apparatus 101 and the conductor vapor deposition apparatus 102 are the same as the bag filter medium manufacturing apparatus 100A which concerns on Embodiment 1, illustration and description are abbreviate | omitted in Embodiment 2. For this reason, the structure of the whole bag filter medium filter apparatus 100B which concerns on Embodiment 2 is abbreviate | omitted, and only the cover layer forming apparatus 103 is shown and demonstrated here.

FIG. 8 is a view for explaining the cover layer forming apparatus 103 of the filter medium manufacturing apparatus 100B for a bag filter according to the second embodiment.

As shown in Fig. 8, the cover layer forming apparatus 103 is formed into a feed roller 410 for feeding the bag filter medium 1A (see Fig. 1) in a rolled state, and in a roll shape. For forming the cover layer fed from the feed roller 420 to the feed roller 420 for feeding the cover layer forming member 61 and the bag filter medium 1A fed from the feed roller 410. A joining device 430 for joining the members 61, a winding roller 440 for winding the bag filter medium 1B in a state where the cover layer forming member 61 is joined, a tension roller 450, An auxiliary roller 460 is provided. In addition, the bag filter filter medium 1A fed from the feed roller 410 is the bag filter filter medium 1A manufactured in Embodiment 1, and the bag filter filter medium 1A in which the conductor 24 was deposited. )to be.

In addition, the bonding apparatus 430 can use the thing of the same structure as the bonding apparatus 130 shown in FIG.

By the filter medium manufacturing apparatus 100B for bag filters having such a cover layer forming apparatus 103, the filter medium 1B for bags filters shown in FIG. 7 can be manufactured.

3. Description of filter medium manufacturing method for bag filter according to Embodiment 2

It is a flowchart for demonstrating the manufacturing method of the filter medium for bag filters which concerns on Embodiment 2. FIG.

As shown in FIG. 9, the method for manufacturing a filter medium for a bag filter according to Embodiment 2 includes a substrate layer preparation step (S11), a first field spinning step (S12) for generating the first nanofiber composite 40, By heat-compressing the second electric field spinning step (S13) for manufacturing the second nanofiber composite 50 and the second nanofiber composite 50, the base layer layer 10 and the nanofiber layer 20 for shingles are formed. A bonding step (S14) for bonding to the bonding nanofiber layer 30, and a conductor attaching step (S15) for attaching a conductor to the nanofibers for shingles of the nanofiber layer 20 for shingles by vapor deposition; And a cover layer forming step (S16) of forming a cover layer 60 on the surface of the nanofiber layer 20 for shingles with a conductor.

Since the manufacturing method of the filter medium for bag filters which concerns on Embodiment 2 added only the cover layer formation process (S16) to each process (refer FIG. 3) of the manufacturing method for filter medium for bags filters which concerns on Embodiment 1, the cover layer formation process ( Only S16) will be described.

The cover layer forming step (S16) is a step of forming the cover layer 60 on the surface of the nanofiber layer 20 for shingles of the filter medium for bag filters 1A by the cover layer forming apparatus 103 shown in FIG. 8. to be. That is, by bonding the cover layer forming member 61 fed from the feed roller 420 to the bag filter medium 1A fed from the feed roller 410 by the bonding apparatus 430, the bag is joined. The cover layer 60 is formed on the surface of the nanofiber layer 20 for herpes of the filter medium 1A for filters.

The bag filter 500B (not shown) similar to the bag filter 500A (refer FIG. 5) described in Embodiment 1 can also be manufactured by using the filter medium 1B for bag filters which concerns on Embodiment 2. FIG. The configuration of the bag filter 500B differs from that of the bag filter 500A only in that the cover layer 60 is formed on the surface of the bag filter 500B, that is, the surface of the nanofiber layer 20 for shingles. The components are the same. The bag filter 500B has the same effect as the bag filter 500A, and since the cover layer 60 is formed on the surface of the bag filter 500B, the nanofiber layer 20 for shingles can be protected. .

In addition, since the cover layer 60 has a larger porosity than the nanofibrous layer 20 for herpes, the cover layer 60 does not affect the herpes ability of the nanofibrous layer 20 for herpes. In addition, since the porosity of the cover layer is large even when the dust removal operation is performed by the pulse jet cleaning shown in FIG. 6, dust can be efficiently removed without affecting most of the dust removal operations.

In addition, this invention is not limited to the said embodiment, A various deformation | transformation is possible in the range which does not deviate from the summary of this invention. For example, the modification implementation shown below is also possible.

(1) The number, positional relationship, and size of each constituent element in each of the above-described embodiments are illustrative, and the present invention is not limited thereto.

(2) In each of the above embodiments, the bonding member is described as being formed as a nanofiber layer (nanofiber layer for bonding) made of nanofibers (nanofiber for bonding), but may not necessarily be formed of a nanofiber layer made of nanofibers. The base layer 10 and the nanofiber layer 20 for herpes may be bonded to each other.

(3) In each said embodiment, although the nonwoven fabric which consists of PTFE fiber was used as the base material layer 10, this invention is not limited to this. A nonwoven fabric made of different kinds of fibers may be used, or a woven fabric, knitted fabric, paper, or the like made of various materials may be used. The filter medium for filters, such as a HEPA filter, may be used as a base material layer.

(4) In the said Embodiment 1, the conveying apparatus 110, the 1st field radiating apparatus 121, the 2nd field radiating apparatus 122, and the bonding apparatus 130 are made into the nanofiber composite manufacturing apparatus 101, Although the conductor vapor deposition apparatus 102 was provided as a structure different from the nanofiber composite manufacturing apparatus 101, and these were combined into the filter medium manufacturing apparatus 100A for bag filters, it is not limited to this, The nanofiber composite manufacturing apparatus 101 is provided. (The apparatus which added the conductor vapor deposition apparatus 102 to the conveying apparatus 110, the 1st field emission apparatus 121, the 2nd field emission apparatus 122, and the bonding apparatus 130 as one apparatus, You may make it the filter medium manufacturing apparatus 100A for bag filters. In this case, the first field emission step by the first field emission device 121 to the conductor deposition step by the conductor deposition device 102 are performed as a series of steps. In addition, it is good also as an arrangement | positioning which performs thermocompression bonding with the bonding apparatus 130 after carrying out vapor deposition by a conductor vapor deposition apparatus.

(5) Also in the second embodiment, the conveying apparatus 110, the first field radiating apparatus 121, the second field radiating apparatus 122, and the bonding apparatus 130 are used as the nanofiber composite production apparatus 101, Although the conductor vapor deposition apparatus 102 and the cover layer forming apparatus 103 were provided as a structure different from the said nanofiber composite manufacturing apparatus 101, these were combined into the filter medium manufacturing apparatus 100B for bag filters, However, The conductor deposition apparatus 102 is not limited to the nanofiber composite production apparatus 101 (the conveying apparatus 110, the first field radiating apparatus 121, the second field radiating apparatus 122, and the bonding apparatus 130). ) And the cover layer forming device 103 may be used as one device for the filter medium manufacturing apparatus 100B for a bag filter. In this case, in the first field spinning process by the first field spinning device 121, The cover layer forming process by the cover layer forming apparatus 103 was performed as a series of processes. . Also in this case, it is good also as an arrangement | positioning which performs thermocompression bonding by the bonding apparatus 130 after vapor deposition by the conductor vapor deposition apparatus 102. FIG.

(6) In each of the above embodiments, the bonding nanofiber layer 30 is generated by one field radiating device (first field radiating device 121), but the plurality of bonding field nanofiber layers 30 by the field radiating device. ) May be generated. At this time, the polymer solution to be used may be different for each field radiating device. In addition, although the shingles nanofiber layer 20 was also produced by one field radiating device (second field radiating device 122), the shingles nanofiber layer 20 may be similarly produced by a plurality of field radiating devices. good. Also in this case, the polymer solution to be used may be different for each field radiating device.

(7) In each said embodiment, the process of producing | generating the 1st nanofiber composite 40 by forming the nanofiber layer 30 for bonding in the base material layer 10, and herpes in the said 1st nanofiber composite 40 Although the process of forming the nanofiber layer 20 for the production | generation of the 2nd nanofiber composite 50 is performed as a series of process in one nanofiber composite manufacturing apparatus 100A and 100B, it is not limited to this. For example, first, the step of forming the first nanofiber composite 40 by forming the bonding nanofiber layer 30 on the base layer 10 is performed on the base layer 10 having a predetermined length. After generating the first nanofiber composite 40 having a predetermined length, the nanofiber layer 20 for herpes is formed on the first nanofiber composite 40 having the predetermined length to form a second nanofiber composite ( 50), the first nanofiber composite 40 It may be carried out to the sex process and the second process of generating a composite nano-fiber (50) as a separate step.

(8) In the second embodiment, the cover layer forming member 61 for forming the cover layer 60 is made of glass fiber in a roll shape, and the roll-shaped cover layer forming member 61 is formed. While the () is added to the shingles nanofiber layer 20, the material of the cover layer forming member 61 and the method of forming the cover layer 60 on the shingles nanofiber layer 20 are not particularly limited. For example, the cover layer 60 may be formed on the surface of the nanofiber layer 20 for shingles by the field spinning method or the melt blow method. In this case, the cover layer 60 formed by the field spinning method or the melt blow method has a larger average diameter than the average diameter of the nanofibers 22 for herpes of the nanofibrous layer 20 for herpes, and the porosity is herpes. It is preferable to set so as to be larger than the nanofiber layer 20 for use, and to become thinner than the nanofiber layer 20 for herpes.

(9) In each of the embodiments described above, the bonding nanofiber layer 30 made of the bonding nanofibers 32 is produced by the electrospinning method by the first field radiating device 121, but the present invention illustrates this. It is not limited to. You may form the bonding nanofiber layer using the melt-blowing apparatus or another kind of spinning apparatus which can manufacture a nanofiber.

(10) In each of the embodiments described above, the shingles nanofiber layer 20 made of the shingles nanofibers is produced by the electrospinning method by the second field radiating device 122, but the present invention is not limited thereto. Do not. You may form the nanofiber layer for herpes using the melt-blowing apparatus or other types of spinning apparatus which can manufacture a nanofiber.

(11) In each of the above embodiments, the conductor 24 has been exemplified in the case where the conductor 24 is attached to the nanofibers for shingles in a particulate form.

1A, 1B: filter medium for bag filter
10: substrate layer
12: glass fiber
20: nano fiber layer for herpes
30: nanofiber layer for bonding
40: first nanofiber composite
50: second nanofiber composite
22: nano fiber for herpes
32: bonding nanofiber
24: conductor
60: cover layer
61: cover layer forming member
100A, 100B: Filter medium manufacturing device for bag filter
101: nano fiber composite production apparatus
102: conductor deposition apparatus
103: cover layer forming apparatus
110: conveying device
111, 310, 410: feeding roller
112, 330, 440: winding roller
113, 118, 340, 450: tension roller
114, 350, 460: auxiliary roller
121: first field radiating device
122: second field radiating device
200: housing body
210: nozzle unit
220: nozzle upward
230: polymer solution supply
232: raw material tank
233: Stirring Device
234: polymer solution supply device
236: pipe
238: valve
250: collector
252: insulation member
260 power unit
270: auxiliary belt device
272: auxiliary belt
274: Roller for auxiliary belt

Claims (20)

Base layer,
Herpes nanofiber layer made of herpes nanofibers, and
It is provided with a bonding member for bonding the base material layer and the nanofiber layer for herpes,
A conductor is attached to the nanofibers for herpes, and the base layer and the nanofiber layer for herpes have a structure in which the bonding member is bonded,
When melting | fusing point of the material which comprises the said base material layer is "T1", melting | fusing point of the material which comprises the said joining member is "T2", and melting | fusing point of the material which comprises the said nanofiber layer for herpes is set to "T3", "T1> The filter medium for bag filters characterized by satisfying the relationship of "T2" and "T3>T2". The method of claim 1,
The conductor is a filter medium for a bag filter, characterized in that attached by the conductor deposition method. The method of claim 2,
A plurality of kinds of conductors are used as the conductors, wherein the filter medium for a bag filter is used. delete The method of claim 1,
Melting point T1 of the material constituting the base material layer, melting point T2 of the material constituting the bonding member, and melting point T3 of the material constituting the nanofiber layer for herpes are "T1-T2≥10 ° C". And the relationship of "T3-T2? 10 占 폚". The method of claim 1,
The nanofiber layer for shingles is a filter material for a bag filter, characterized in that a cover layer for protecting the shingles nanofiber layer is formed on the side opposite to the bonding surface of the bonding member. The method according to any one of claims 1, 2, 3, 5 and 6,
The nanofiber layer for herpes is formed by the field spinning method,
The joining member is formed of a joining nanofiber layer made of a joining nanofiber, and the joining nanofiber layer is formed by an electric field spinning method. The method of claim 7, wherein
The density amount of the said nanofiber layer for joining is in the range of 0.01g / m <2> -20g / m <2>, The filter medium for bag filters characterized by the above-mentioned. The method of claim 7, wherein
A bag characterized by satisfying the relationship of "0.01≤D2 / D1≤0.50" when the average diameter of the shingles nanofibers is "D1" and the average diameter of the bonding nanofibers is "D2". Filter media for filters.
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