KR101681754B1

KR101681754B1 - Filter for cleaning air and manufacturing method thereof

Info

Publication number: KR101681754B1
Application number: KR1020150039113A
Authority: KR
Inventors: 안홍태; 황순기
Original assignee: (주)코레쉬텍
Priority date: 2015-03-20
Filing date: 2015-03-20
Publication date: 2016-12-01
Also published as: KR20160112800A

Abstract

An air cleaning filter according to an embodiment of the present invention includes a back filter, a pre-filter attached to one surface of the bag filter, ; And an adhesive layer disposed between the pre-filter and the bag filter to adhere the bag filter and the pre-filter. The filter for air cleaning according to the present invention may have a low pressure loss and a high dust collecting efficiency .

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter for cleaning air,

More particularly, the present invention relates to an air cleaning filter having a small pressure loss and a high dust collecting efficiency, and a manufacturing method thereof.

With the development of industry and urbanization, air pollution is increasing and indoor and outdoor air are accompanied by serious pollution. In fact, bacterial particulates such as dust, dust, pollen, and various harmful substances such as benzene and toluene discharged from the exhaust gas are introduced into the room. Especially, when a heater or an air conditioner is operated on a cold or humid day, various kinds of harmful substances are introduced into the room. Accordingly, there is a growing need to keep the room in a comfortable condition, and various kinds of filters are used and developed to purify polluted air.

Background Art [0002] Air filters for purifying air by preventing inflow of bacterial fine particles and harmful substances into the passenger compartment are mounted on a vehicle air conditioner or a household air purifier.

In general, the air conditioner, the air purifier, and the industrial air conditioning system use a dust filter to collect dust and foreign substances contained in the air and filter the dust filter. The dust filter includes a pre-filter for pre-processing and a medium filter for post- And so on. These filters can be adsorbed to the outside of the filter and the filter, so that odorous substances or perishable substances such as microorganisms flowing from the outside may be periodically replaced and managed.

Korean Patent Laid-Open Publication No. 2014-0107724 relates to a dust collecting microfibre filter for effectively filtering fine dust or foreign matter contained in air and a method of manufacturing the same, wherein a plurality of multifilaments are formed by weaving in a net shape, And 24 to 48 strands of the monofilaments are twisted to form 50 to 100 deniers.

Korean Patent Laid-Open Publication No. 2014-0038157 discloses that microfine fibers are continuously and randomly arranged, a fibrous porous body having a maximum pore size of 0.1 to 2 占 퐉 and an anisotropic nanomaterial are arranged in the pore size distribution, Discloses a fibrous filter comprising a filter layer having a nanonet layer with a maximum pore size of 1 to 100 nm.

An object of an embodiment according to the present invention is to provide a filter for an air cleaner having a low pressure loss and a high dust collecting efficiency, and a method for manufacturing the same.

According to an embodiment of the present invention, there is provided an electronic device including a bag filter, a pre-filter attached to one surface of the bag filter, And an adhesive layer disposed between the pre-filter and the bag filter and attaching the bag filter and the pre-filter to each other.

The adhesive layer may have a mesh structure.

The bag filter may be a medium filter or a HEPA filter.

The bag filter may be a nonwoven fabric or mesh having a pore size of 200 to 400 mesh size, and the pre-filter may have a mesh structure having a pore size of 30 to 200 mesh.

The pre-filter may be characterized in that it is made of multifilament yarn made by twisting two or more strands of fibers.

The prefilter may have a mesh structure having a pore size of 30 to 200 mesh size, and the adhesive layer may have a mesh structure having a pore size of 20 to 140 mesh.

Another embodiment of the present invention provides a method of manufacturing a semiconductor device, comprising: providing a prefilter; Forming an adhesive layer on the pre-filter; And attaching a bag filter to the pre-filter having the adhesive layer formed thereon.

The method of attaching the bag filter to the prefilter is carried out by a method in which a preformed bag filter is placed on the adhesive layer and thermocompression is performed or a bag filter layer is formed by electrospinning on the prefilter followed by thermocompression have.

The prefilter is made of multi-yarn made by twisting two or more strands of fiber, and is woven so as to have a mesh structure of 30 to 200 mesh.

The step of forming an adhesive layer on the pre-filter

Forming an adhesive film on the adhesive film; aligning the adhesive film with a prefilter; and irradiating ultrasound to the prefilter in which the adhesive film is assembled, thereby forming voids in the adhesive film.

And the step of fusing the adhesive film and the prefilter is performed by a hot pressing process.

The filter for an air cleaner according to an embodiment of the present invention has high dust collecting efficiency and can effectively filter fine dust and foreign matter contained in the air. Also, while having good dust collecting efficiency, it can exhibit a high permeate flow rate due to low pressure loss during filtration, thereby achieving power consumption reduction, noise reduction, and cost reduction.

The filter for an air cleaner according to an embodiment of the present invention can be bonded to a pre-filter having a pore of a uniform size and a porosity to improve the uniformity. Further, as the two filters are adhered to each other, the generation of static electricity can be induced to improve the dust collecting efficiency.

1 is a perspective view schematically showing an air cleaning filter according to an embodiment of the present invention.
2 is a cross-sectional view schematically showing an air cleaning filter according to an embodiment of the present invention.
Fig. 3 is a photograph of a front surface of an air cleaning filter manufactured according to an embodiment of the present invention.
4 is a photograph of a section of an air cleaning filter manufactured according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail so that those skilled in the art can easily carry out the present invention. Embodiments of the present invention are provided to more fully describe the present invention to those skilled in the art. Therefore, the embodiments of the present invention can be modified into various other forms, and the scope of the present invention is not limited to the following embodiments.

Further, preferred embodiments of the present invention can be described with reference to the accompanying drawings, which are provided for a more complete understanding of the present invention to those skilled in the art. Therefore, the scope of the present invention is not limited to the accompanying drawings, and the shapes and sizes of the elements in the drawings may be exaggerated for clarity, and the elements denoted by the same reference numerals in the drawings are the same elements.

Throughout the description of the present invention, when a component is referred to as " comprising ", it means that it can include other components as well, without excluding other components unless specifically stated otherwise.

The terms " about ", " substantially ", etc. used to the extent that they are used throughout the specification of the present invention are used in their numerical values or in close proximity to their numerical values when the manufacturing and material tolerances inherent in the meanings mentioned are presented, Is used to prevent unauthorized exploitation by an unscrupulous infringer of precise or absolute disclosures in order to aid in the understanding of the disclosure.

FIG. 1 is a perspective view schematically showing an air cleaning filter according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view schematically showing an air cleaning filter according to an embodiment of the present invention. FIG. 3 is a photograph of the front surface of an air cleaning filter manufactured according to an embodiment of the present invention, and FIG. 4 is a photograph of a section of the air cleaning filter shown in FIG.

1 to 4, an air cleaning filter according to an embodiment of the present invention includes a back filter 10, a pre-filter 20, An adhesive layer 30 may be included.

According to one embodiment of the present invention, the bag filter 10 is a main filter for filtering fine dust or foreign matter.

According to an embodiment of the present invention, the bag filter may be a medium filter or a High Efficiency Particulate Air filter (HEPA).

Although not limited thereto, the bag filter may be formed of a nonwoven fabric or a mesh having a pore size of 200 to 400 mesh.

Although the nonwoven fabric has many fine pores, there is a problem that the uniformity is deteriorated and the mechanical strength is weak, so that the nonwoven fabric ruptures at a high pressure difference. Also, meshes with a mesh size of more than 200 mesh are not used as post-treatment filters used in high pressure differentials because of their low mechanical strength.

However, according to one embodiment of the present invention, uniformity can be improved by adhering to a prefilter having a pore size and a porosity of a uniform size, and durability capable of withstanding a high pressure difference can be provided. Further, as the two filters are adhered to each other, the generation of static electricity can be induced to improve the dust collecting efficiency.

According to an embodiment of the present invention, the pre-filter 20 may have a mesh structure. But it is not limited thereto, it may be a mesh having a void of 30 to 200 mesh.

In addition, the pre-filter may be made of multi-yarn, which means that at least two strands, preferably two to ten strands, of fibers are twisted. According to one embodiment of the present invention, It may be that heat is fixed at a temperature of 80 to 130 ° C after twisting at 650 to 1200 times. The thickness of the multi-yarn may be 40 to 150 mu m.

Such a multi-filament prefilter can improve the adhesive strength in the adhesive layer and the pressing process.

The adhesive layer 30 is disposed between the bag filter 10 and the prefilter 30 to attach the bag filter 10 and the prefilter 30 and prevent dust from being caught.

According to one embodiment of the present invention, an ethylene vinyl acetate (EVA) hot melt may be used as the adhesive layer.

More specifically, a copolymer of an ethylene monomer and a vinyl acetate monomer can be used, and an ethylene monomer content of 90 to 98% by weight can be used. Thus, the strength of the adhesive layer can be improved.

The adhesive composition for forming the adhesive layer comprises 20 to 50 parts by weight of an ethylene vinyl acetate copolymer, 15 to 20 parts by weight of a rosin or rosin derivative, 15 to 20 parts by weight of a wax and 5 to 10 parts by weight of a plasticizer, To 10 parts by weight, and 5 to 10 parts by weight of dimeric acid. The filler may be a mixture of calcium carbonate and clay, and thixotropy may be imparted as it contains dimer acid.

According to one embodiment of the present invention, the problem that the strength of the adhesive layer is improved by using an ethylene vinyl acetate copolymer having a high content of ethylene monomer and the low viscosity of the adhesive due to the low ratio of vinyl acetate is caused by rosin or rosin derivatives It is possible to reinforce the tackiness.

In addition, the pressure-sensitive adhesive composition includes a dimer acid and thixotropy is added thereto to allow the adhesive layer to adhere uniformly to the pre-filter, and the pressure-sensitive adhesive layer can be hardened and fixed after a certain period of time.

The thickness of the adhesive layer may be 25 to 100 mu m. If the thickness of the adhesive layer is less than 25 mu m, the adhesive strength and strength may be lowered. If the thickness is more than 100 mu m, the gap between the HEPA filter and the prefilter may increase and the dust collection efficiency may decrease.

According to one embodiment of the present invention, the adhesive layer 30 may have a mesh structure. The size of the voids formed in the adhesive layer may be 20 to 140 mesh, although not limited thereto.

As shown in Figs. 1 and 3, the voids of the adhesive layer 30 may be arranged so as not to overlap the voids of the pre-filter. That is, a line constituting the mesh structure of the adhesive layer may be disposed so as to cross the pores of the pre-filter.

In the air cleaning filter according to an embodiment of the present invention, the bag filter and the pre-filter are combined by the adhesive layer, and the dust collection efficiency can be improved by inducing generation of static electricity. Accordingly, even fine particles can be removed.

Further, the air gap uniformity of the filter can be improved to reduce pressure loss, thereby exhibiting a high permeation flow rate, reducing power consumption, reducing noise, and reducing cost.

Hereinafter, a method of manufacturing an air cleaning filter according to an embodiment of the present invention will be described.

First, a pre-filter can be provided, and the pre-filter can be woven in the following manner.

As described above, the pre-filter can be woven using multi yarns formed by twisting two or more strands of fibers. More specifically, a multi-yarn in which two or more fibers are thermally fixed at a temperature of 80 to 130 DEG C after being twisted at 650 to 1200 T / M (twisted meter) per meter may be used, and the thickness of the multi- have.

According to one embodiment of the present invention, a multi-yarn can be woven with a net having a void of 30 to 200 mesh.

Next, an adhesive layer may be formed on the pre-filter.

According to one embodiment of the present invention, first, an adhesive film is formed, and after the adhesive film and the prefilter are compressed, an ultrasonic wave may be irradiated to form a gap in the adhesive film.

First, as described above, an adhesive composition may be provided to form an adhesive film, wherein the adhesive composition comprises 20 to 50 parts by weight of an ethylene vinyl acetate copolymer, 15 to 20 parts by weight of a rosin or rosin derivative, 15 to 20 parts by weight of a plasticizer, 5 to 10 parts by weight of a plasticizer, 5 to 10 parts by weight of a filler, and 5 to 10 parts by weight of a dimer acid. The filler may be a mixture of calcium carbonate and clay.

The adhesive composition can be heated and thinned. At this time, the thickness of the adhesive film may be 25 to 100 mu m.

The adhesive film and the prefilter can be simultaneously pressed on the hot press roller. The pressure of the adhesive can be a linear pressure of 1 to 5 kg / cm. At this time, the process speed may be 15 to 20 m / min, and the hot press temperature may be 100 to 180 ° C. If the mixing speed exceeds 20 m / min, the adhesive film and the pre-filter may not be sufficiently mixed.

Ultrasonic waves can be applied to the prefilter and the adhesive film thus assembled. The ultrasonic irradiation may be performed using an output of 600 to 1,200 W and an ultrasonic wave of a frequency of 15 to 28 kHz. By this ultrasonic process, fine voids can be formed in the adhesive film.

After the ultrasound process, the micropores formed on the adhesive film are heated to 80 to 180 DEG C to form a uniform pattern.

As described above, the size of the air gap may be 20 to 140 mesh, and may be staggered without overlapping the voids of the pre-filter.

And then cooled at a temperature of 10 to 40 DEG C to form an adhesive layer on the pre-filter.

Next, a bag filter may be attached to the pre-filter having the adhesive layer formed thereon. As described above, the bag filter may be a medium filter or a HEPA filter.

More specifically, a pre-formed bag filter may be placed on the adhesive layer formed on the pre-filter, and the filter may be attached by thermocompression.

Alternatively, the bag filter layer may be directly formed on the prefilter on which the adhesive layer is formed by electrospinning, followed by thermocompression bonding.

The pressing process may be performed using a hot press roller, and the pressing pressure may be 1 to 3 kg / cm.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but many variations and modifications may be made without departing from the scope of the present invention. It is evident that many variations are possible by those skilled in the art. It will be apparent to those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. something to do.

10: bag filter 20: prefilter
30: adhesive layer

Claims

A back filter;
A pre-filter attached to one surface of the bag filter; And
And an adhesive layer disposed between the pre-filter and the bag filter to adhere the bag filter and the pre-filter,
The prefilter is made of a mesh having a pore size of 30 to 200 meshes. The prefilter is made of multifilament yarn made by twisting two or more strands of fibers, Layer has a mesh structure having a pore size of 20 to 140 meshes. The pores of the adhesive layer are formed by irradiating ultrasonic waves to a prefilter in which an adhesive film is adhered, and a line constituting the mesh structure of the adhesive layer forms a pore of the prefilter Wherein the air cleaning filter is disposed so as to traverse the air cleaning filter.

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The method according to claim 1,
Wherein the bag filter is a medium filter or a HEPA filter.

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Providing a pre-filter;
Forming an adhesive layer on the pre-filter; And
Attaching a bag filter to the prefilter on which the adhesive layer is formed,
The step of forming an adhesive layer on the pre-filter
Forming an adhesive film; aligning the adhesive film with a prefilter; and irradiating ultrasound to the prefilter in which the adhesive film is assembled, thereby forming voids in the adhesive film,
The prefilter is made of multifilament yarn made by twisting two or more strands of fibers and has a mesh structure of 30 to 200 mesh,
Wherein the adhesive layer has a mesh structure having a pore size of 20 to 140 mesh through the ultrasonic wave irradiation, and a line forming a mesh structure of the adhesive layer is disposed across the pores of the pre-
The method of attaching the bag filter to the prefilter is performed by thermocompression bonding a preformed bag filter on the adhesive layer or by forming a bag filter layer by electrospinning on the prefilter followed by thermocompression bonding, Wherein the filter is a nonwoven fabric or mesh having a pore size of 200 to 400 mesh.

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8. The method of claim 7,
Wherein the step of fusing the adhesive film and the prefilter is performed by a hot press process.