KR20170048059A - Air Filter Frame, Air Purification Filter Using the Same and Method for Priparing the Same - Google Patents

Air Filter Frame, Air Purification Filter Using the Same and Method for Priparing the Same Download PDF

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Publication number
KR20170048059A
KR20170048059A KR1020150148942A KR20150148942A KR20170048059A KR 20170048059 A KR20170048059 A KR 20170048059A KR 1020150148942 A KR1020150148942 A KR 1020150148942A KR 20150148942 A KR20150148942 A KR 20150148942A KR 20170048059 A KR20170048059 A KR 20170048059A
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South Korea
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hot
melt adhesive
adhesive layer
frame
filter
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KR1020150148942A
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Korean (ko)
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KR101790513B1 (en
Inventor
김진석
양성욱
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주식회사 한새
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0002—Casings; Housings; Frame constructions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0002—Casings; Housings; Frame constructions
    • B01D46/0005—Mounting of filtering elements within casings, housings or frames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Materials (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

More particularly, the present invention relates to a frame for an air filter, and a method of manufacturing the same. More particularly, the present invention relates to a frame for an air filter, And more particularly, to a frame for an air filter, a filter for air purification using the same, and a method for manufacturing the same.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a frame for an air filter, an air filter for the same,

More particularly, the present invention relates to a frame for an air filter, and a method of manufacturing the same. More particularly, the present invention relates to a frame for an air filter, And more particularly, to a frame for an air filter, a filter for air purification using the same, and a method for manufacturing the same.

In general, the air cleaner is a device for purifying air by providing a pre-filter, a mid filter, a hepafar filter, an activated carbon filter, or the like so as to remove dust and pollutants in the air. The medium filter and the hepa- Is a high performance filter that filters contaminants such as fungi, volatile organic compounds and the like, and has recently been applied as an essential component.

As shown in FIG. 1, the filter medium and the HEPA filter form a filter body 5 in which a deodorization / removal filter, a pollutant removing filter and an antibacterial filter are sequentially provided to be folded, And the frame 10 is adhered with a hot-melt adhesive.

However, since the filter body and the frame are generally adhered with a hot melt adhesive that is discharged through a glue gun, a worker must work with a heavy glue gun, There was a falling problem.

In addition, since a series of processes of bonding the filter body and the frame with the hot melt adhesive discharged to the glue gun is performed manually, it is difficult to maintain the constant quality of the product, the product is unstable and the defect rate is increased, and the connection between the frames and the filter body There is a problem that a filter function can not be performed due to a leak in the filter.

Accordingly, in Korean Patent Registration No. 10-1411577, after a hot-melt adhesive is fed between a filter and a folded surface of a paper frame, the folded surface of the paper frame is pressed by a pressing member, and the folded surface of the paper frame and the filter are adhered However, in order to adhere the frame to the filter body, an adhesive device equipped with a filter supply unit, a first supply pressure unit, a transfer unit, and a second supply pressure unit must be provided. In addition, Since the hot melt is hard at a temperature lower than the melting point of the hot-melt adhesive, it must be maintained at a predetermined temperature or higher in the first supply-pressure portion and the second supply-pressure portion for supplying the hot-melt adhesive. In order to apply it to other filters such as a cylindrical filter, There was a problem that the change had to be made.

Korean Patent Publication No. 10-1411577

The main object of the present invention is to provide a hot-melt adhesive layer on one side of a frame, which facilitates the attachment of the frame according to various shapes of filter bodies, The present invention provides a frame for an air filter capable of reducing the defective rate while maintaining the quality of the product constantly while improving the productivity of the product.

The present invention is also directed to an air purification filter and a method of manufacturing the same that can prevent excessive deformation of a filter body and prevent leakage to improve air purification efficiency by using the frame for air filter in which the hot- .

In order to achieve the above object, an embodiment of the present invention provides a frame for an air filter, wherein a polyolefin-containing hot melt adhesive layer is formed on one surface.

In a preferred embodiment of the present invention, the polyolefin is at least one selected from the group consisting of ethylene vinyl acetate, ethylene methyl methacrylate and ethylene ethyl acrylate.

In one preferred embodiment of the present invention, the hot-melt adhesive layer comprises a first hot-melt adhesive layer coated on one side of the frame with a polyolefin-containing hot-melt adhesive having a weight average molecular weight of 3,000 to 150,000 g / mol; A second hot-melt adhesive layer on which a hot-melt adhesive containing polyolefin having 100,000 to 300,000 g / mol is applied on the first hot-melt adhesive layer; And a third hot-melt adhesive layer coated with a hot-melt adhesive containing polyolefin having a weight average molecular weight of 3,000 to 150,000 g / mol on the second hot-melt adhesive layer.

In a preferred embodiment of the present invention, the first hot-melt adhesive layer and the third hot-melt adhesive layer have a melting temperature of 80 to 180 ° C, a melting temperature of the second hot-melt adhesive layer is 100 to 230 ° C, 3 The melting temperature of the hot-melt adhesive layer is lower than the second hot-melt adhesive layer temperature.

In one preferred embodiment of the present invention, the first hot-melt adhesive layer and the third hot-melt adhesive layer each have a thickness of 10 to 300 탆 and the second hot-melt adhesive layer has a thickness of 10 to 300 탆.

 In a preferred embodiment of the present invention, the air filter frame is thermally fused to the adherend at 120 to 230 ° C.

Another embodiment of the present invention is a process for producing a filter material, comprising the steps of: (a) bending a filter material web at the same height of a mountain to obtain a filter material having a plurality of wrinkles; (b) applying and curing a hot-melt adhesive on one side or both sides of the obtained filter media at predetermined intervals to manufacture a filter body; And (C) thermally fusing the air filter frame to the rim surface of the fabricated filter body.

Another embodiment of the present invention provides an air purification filter characterized by being manufactured by the above-described method for manufacturing an air purification filter.

Since the frame for air filter according to the present invention is integrally formed with the hot melt adhesive layer on one side of the paper and the nonwoven fabric frame, the frame can be easily adhered without changing the apparatus according to the various filters and the use of the hot melt adhesive can be minimized, Adhesion of the adhesive layer to a uniform adhesive surface can reduce the defective rate while maintaining the quality of the product constant.

Further, since the filter for air purification according to the present invention is manufactured by using the frame for air filter in which the hot-melt adhesive layer is integrally formed, the interval of the wrinkles is constantly maintained So that contraction or sagging and sagging on one side are prevented, and an excellent filtering effect can be obtained.

1 shows a conventional air purification filter.
2 is a cross-sectional view of a frame for an air filter according to an embodiment of the present invention.
3 is a cross-sectional view of a frame for an air filter according to an embodiment of the present invention.
4 is an assembled perspective view of an air filter for manufacturing an air filter using the air filter frame according to the present invention.
FIG. 5 is a perspective view of a combined air purifying filter according to an embodiment of the present invention. Referring to FIG.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In general, the nomenclature used herein is well known and commonly used in the art.

Throughout this specification, when an element is referred to as including an element, it is understood that it may include other elements as well, without departing from the other elements unless specifically stated otherwise.

In the entire specification of the present application, the "molecular weight" was determined by polystyrene conversion weight average molecular weight (Mw) by gel permeation chromatography (GPC) (Hewlett Packard Co., model name HP-1100). The polymer to be measured was dissolved in tetrahydrofuran so as to have a concentration of 4000 ppm and 100 μl was injected into GPC. The mobile phase of GPC was run at a flow rate of 1.0 mL / min using tetrahydrofuran and the assay was performed at 30 < 0 > C. The column was connected in series with three Agilent Plgel (1,000 + 500 + 100A). The detector was measured at 30 DEG C using an RI detector (HP-1047A, manufactured by Hewlett-Packard).

The present invention relates to a frame for an air filter characterized in that a polyolefin-containing hot-melt adhesive layer is formed on one surface in one aspect.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a cross-sectional view of a frame for an air filter according to an embodiment of the present invention, FIG. 3 is a sectional view of a frame for an air filter according to an embodiment of the present invention, 5 is an assembled perspective view for manufacturing an air purifying filter using the frame for an air filter according to the present invention.

The frame for an air filter according to the present invention has a structure in which a hot melt adhesive layer 50 is integrally formed on one side of a frame 10 to easily attach the frame to the filter body 5 in various shapes, The defective rate can be reduced while maintaining the quality of the product constant without leakage, and the productivity of the product can be improved.

In this case, the frame 10 can be applied to any frame used for an air filter such as a medium filter or a HEPA filter, and can be manufactured in various shapes according to the filter body 5, Fabric tiles, synthetic resins, and the like.

The hot-melt adhesive layer 50 is formed by applying a hot-melt adhesive containing a polyolefin as a base resin to one surface of the frame 10. The hot melt adhesive may be any conventional hot melt adhesive containing at least one polyolefin selected from the group consisting of ethylene vinyl acetate, ethylene methyl methacrylate, and ethylene ethyl acrylate.

An example of the hot-melt adhesive composition is 10 to 70% by weight of a polyolefin; 10 to 60% by weight of petroleum resin or tackifier resin having 4 to 9 carbon atoms; 1 to 35% by weight of wax; And 1 to 10% by weight of an additive. The additive may be an antioxidant, a plasticizer pigment or the like, and the wax may be a paraffin wax, a polyethylene wax, or the like.

The hot-melt adhesive layer 50 is preferably bonded to the first to third hot-melt adhesive layers so as to sufficiently support the filter body 5 without deteriorating the adhesive force between the frame 10 and the filter body 5, Layer structure. At this time, the hot-melt adhesive of each layer is composed of the same components, and the interfacial adhesive force of each layer can be increased without a sense of heterogeneity according to the components.

The first hot-melt adhesive layer 51 is formed by applying a polyolefin-containing hot-melt adhesive having a weight average molecular weight of 3,000 to 150,000 g / mol on one side of the frame. The second hot-melt adhesive layer 52 is formed on the upper surface And the third hot melt adhesive layer 53 is formed by applying a polyolefin-containing hot melt adhesive having a weight average molecular weight of 3,000 to 150,000 g / mol on the upper surface of the second hot melt adhesive layer, And the second hot-melt adhesive layer is formed by applying a hot-melt adhesive containing a polyolefin having a higher molecular weight than that of the polyolefin contained in the first and third hot-melt adhesive layers so that the first hot-melt adhesive layer and the third hot- Has a sufficient flowability at a lower melting temperature than the second hot-melt adhesive layer, so that the adhesive strength between the frame and the filter body Produce.

If the weight average molecular weight of the polyolefin of the first and third hot-melt adhesive layers is out of the above-mentioned range, the adhesion between the filter body and the frame is reduced due to the weakening of the cohesive force, or there is a problem in workability due to the high viscosity, When the weight average molecular weight of the polyolefin of the polyolefin is out of the above range, the frame can not sufficiently support the filter body during heat fusion with the frame, so that leakage may occur due to deformation between the filter body and the frame, .

The melting point of the first hot-melt adhesive layer and the third hot-melt adhesive layer is 80 to 180 ° C, the melting temperature of the second hot-melt adhesive layer is 100 to 230 ° C, The melting point of the second hot-melt adhesive layer is at least 20 ° C higher than the melting temperature of the first and third hot-melt adhesive layers.

The thickness of the first and third hot-melt adhesive layers is preferably 10 to 300 占 퐉 so as to have a sufficient adhesive force between the frame and the filter body, and the second hot-melt adhesive layer may have a thickness of 10 to 300 占 퐉, 300 탆.

The method for forming the hot-melt adhesive layer in the air filter frame includes the steps of applying a hot-melt adhesive for forming the first hot-melt adhesive layer 51 melted on one side of the frame 10 by a jetting device or the like, After adjusting the thickness of the adhesive layer, the first hot-melt adhesive layer is formed by drying. The first hot-melt adhesive layer thus formed can be formed by successively applying and drying the hot-melt adhesive for forming the second and third hot-melt adhesive layers 52 and 53, which are melted on the upper surface, respectively.

In the meantime, when the polyolefin is ethylene vinyl acetate, the melting point differs depending on the grade of the hot-melt adhesive, but it is generally (Ethylene vinyl acetate (EVA) having a vinyl acetate content of 10 to 40) has a melting temperature of 100 占 폚 to 10 占 폚, and the working temperature of the adhesive process for adhering the body using the hot melt adhesive layer containing ethylene vinyl acetate It is preferable to adjust within the range of 140 占 폚 to 10 占 폚 according to the type of the body and the intensity of the pressure applied at this time.

When the frame is attached to the filter body at a working temperature of 140 ± 10 ° C and heat is applied thereto, the melting points of the first and third hot-melt adhesive layers in the hot-melt adhesive layer are 100 ± 10 ° C. And the third hot-melt adhesive layer are melted, the filter body and the frame are uniformly adhered to each other. In this case, the hot-melt adhesive of the second hot-melt adhesive layer contains a polyolefin having a higher molecular weight than that of the polyolefin used for the first and third hot-melt adhesive layers and has a melting point of 160 to 230 ° C.

At this time, the temperature of the bonding process for bonding the filter body and the air filter frame may be determined depending on the temperature of the melting points of the first and third hot-melt adhesive layers.

The hot-melt adhesive layer of the multilayer structure according to the present invention has a structure in which a first hot-melt adhesive layer, a second hot-melt adhesive layer and a third hot-melt adhesive layer are sequentially laminated, or a hot-melt adhesive layer other than the above- .

In addition, the frame for an air filter according to the present invention can be used in the form of a tape in which a releasing paper is attached to the top surface of the hot-melt adhesive layer and the releasing paper is removed at the time of use.

Since the frame for an air filter according to the present invention has a hot melt adhesive layer integrally formed on one side of the frame, it is easy to attach the frame without changing the device according to various types of filters, minimizes the use of the hot melt adhesive, It is possible to reduce the defective rate while maintaining the quality of the product constantly by adhering to one adhering surface, and at the same time, improve the productivity of the product.

In addition, since the hot melt adhesive layer of the air filter according to the present invention has a multi-layered structure and a hot melt adhesive layer having a low melting temperature is formed on the upper and lower sides of a hot melt adhesive layer having a high melting temperature, the hot melt adhesive layers of the same component It is possible to maintain the adhesion between the filter body and the frame by bonding the filter body and the frame by supporting the hot melt adhesive layer having a high melting temperature without adhering to the interface between the filter body and the frame.

In another aspect, the present invention provides a method of manufacturing a filter material, comprising the steps of: (a) bending a filter material web at the same height of a mountain to obtain a filter material having a plurality of wrinkles; (b) applying and curing a hot-melt adhesive on one side or both sides of the obtained filter media at predetermined intervals to manufacture a filter body; And (c) thermally fusing a frame for an air filter according to any one of the above-mentioned claims to the rim surface of the filter body, and to an air purifying filter manufactured by the manufacturing method .

More specifically, in the method of manufacturing an air filter for use in the present invention, the filter material is folded at the same height by using a bending machine or the like to obtain a filter material having a plurality of wrinkles, A hot-melt adhesive is applied on one side or both sides at predetermined intervals and then cured to prepare a filter body.

At this time, the filter media can be used without limitations such as feeder, fabric, and synthetic resin, and other materials such as pulp, polyester, and polypropylene mixed in a predetermined ratio and pressed in a plate shape, Molded products can also be used.

The hot-melt adhesive applied to the filter material may be a thermoplastic resin generally used or a hot-melt adhesive used in the hot-melt adhesive layer. The hot-melt adhesive may vary depending on the use of the filter, And 0.5 to 5 mm in thickness.

The filter material coated with the hot-melt adhesive may be cured to produce a filter body. The filter body may be formed into various shapes such as a square, a rectangle, and a cylinder depending on the application.

The manufactured filter body attaches the frame for an air filter according to the present invention to the rim and bonds it by thermal welding. At this time, the heat-sealing temperature may be determined according to the temperature of the melting point of the adhesive layer, the intensity of the pressure, the filter media, and the material of the frame, and preferably 120 to 230 ° C.

The air filter for air purification according to the present invention is manufactured by using the air filter frame in which the hot melt adhesive layer is formed integrally so that the intervals of the wrinkles are constantly maintained with a uniform and strong holding force without leakage until the life of the filter media is completed, Shrinkage or sagging and sagging to one side are prevented, and an excellent filtering effect can be obtained.

 Hereinafter, the present invention will be described in more detail by way of examples. It should be noted, however, that the following examples are illustrative of the invention and are not intended to limit the scope of the invention.

< Example  1>

A hot-melt adhesive melted at 100 占 폚 was applied to the nonwoven fabric made in the frame shape, and the thickness of the hot-melt adhesive layer was made to be 150 占 퐉 by using a roller, followed by drying at room temperature for 2 hours. The melting temperature of the hot-melt adhesive layer was measured to be 140 캜.

At this time, the hot-melt adhesive contained 5 wt% of a polyethylene wax having a weight average molecular weight of 3,000 g / mol and a softening point of 130 DEG C in a nitrogen atmosphere; 5% by weight of polybutene having a weight average molecular weight of 680 g / mol and containing 80% or more of butene; 40% by weight of a tackifier resin having a weight average molecular weight of 500 g / mol, a softening point of 80 DEG C, a number of carbon atoms of 9, and a hydrogenated content of 80% or more; The antioxidant was added to a small amount of the solution and completely melted while maintaining the temperature at 165 ° C. 50% by weight of EVA having a weight average molecular weight of 3,000 g / mol and a vinyl acetate content of 28% was added and melted.

< Example  2>

 The air filter frame was manufactured in the same manner as in Example 1, and sequentially coated and dried in the form of a hot-melt adhesive composition for forming the first to third hot-melt adhesive layers to prepare an air filter frame having the thicknesses of the first to third hot- Respectively. The melting temperature of the hot-melt adhesive layer (third hot-melt adhesive layer) was measured to be 140 ° C.

In this case, the hot-melt adhesive for forming the first and third hot-melt adhesive layers is the same as that in Example 1, and the hot-melt adhesive for forming the second hot-melt adhesive layer has a weight average molecular weight of 100,000 g / mol 50% by weight of EVA was added thereto, mixed and melted, and air bubbles were removed.

< Example  3>

 The air filter frame was manufactured in the same manner as in Example 2, and sequentially coated and dried in the form of a hot-melt adhesive composition for forming the first to third hot-melt adhesive layers to prepare an air filter frame having the thicknesses of the first to third hot- Respectively. The melting temperature of the hot-melt adhesive layer (third hot-melt adhesive layer) was measured to be 120 ° C.

In this case, the hot-melt adhesive for forming the first and third hot-melt adhesive layers contained 15 wt% of a polyethylene wax having a weight average molecular weight of 500 g / mol and a softening point of 90 DEG C in a nitrogen atmosphere; 5% by weight of paraffinic oil having 60% para-carbon; 10% by weight of polybutene having a weight average molecular weight of 2,400 g / mol and containing 80% or more of butene; 30% by weight of a tackifier resin having a weight average molecular weight of 1,000 g / mol, a softening point of 100 DEG C, a number of carbon atoms of 9, and hydrogenation of not less than 80%; The antioxidant was added to a small amount of the solution and completely melted while maintaining the temperature at 165 ° C. Ethyl acrylate 20% and weight average molecular weight 5,000 g / mol Ethylene ethyl acrylate 40% by weight were mixed and melted. .

The hot-melt adhesive for forming the second hot-melt adhesive layer was prepared in the same manner as in the hot-melt adhesive for forming the first and third hot-melt adhesive layers except that ethylene ethyl acrylate having a weight average molecular weight of 5,000 g / mol was replaced with 250,000 g / mol ethylene ethyl acrylate Were added.

< Experimental Example  1>

The air filter frame produced in Examples 1 to 3 was laminated on a filter body (for a hepafilter), and then a pressure of 3 kgf / cm &lt; 2 &gt; at a temperature of 160 DEG C, which is not lower than the melting temperature of the hot- To attach the frame to the filter body, and dried for 2 hours. The fabricated filter was measured by using a tensile machine (LABTRON MODEL: 2100) to measure the adhesive strength between the filter body and the frame.

Separation between a result, Examples 1 to 3, 5 kgf / cm 2 in was confirmed that that the peeling phenomenon between the filter body and the frame does not occur, in particular, Examples 2 and 3, the filter body and the frame at 20 kgf / cm 2 It was confirmed that the phenomenon did not occur.

< Experimental Example  2>

The adhesion form of the filter manufactured in Experimental Example 1 was visually inspected to confirm whether there was any shape deformation or leakage.

As a result, it was confirmed that in all of Examples 1 to 3, the frame and the filter body were firmly attached without deforming or leaking.

It will be understood by 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.

5: Filter body
10: frame
50: Hot-melt adhesive layer
51: first hot-melt adhesive layer
52: second hot-melt adhesive layer
53: third hot-melt adhesive layer

Claims (8)

And a polyolefin-containing hot-melt adhesive layer is formed on one surface of the frame.
The frame for an air filter according to claim 1, wherein the polyolefin is at least one selected from the group consisting of ethylene vinyl acetate, ethylene methyl methacrylate and ethylene ethyl acrylate.
The method of claim 1, wherein the hot-melt adhesive layer comprises: a first hot-melt adhesive layer having a polyolefin-containing hot-melt adhesive applied on one side of the frame, the first hot-melt adhesive layer having a weight average molecular weight of 3,000 to 150,000 g / mol; A second hot-melt adhesive layer on which a hot-melt adhesive containing polyolefin having 100,000 to 300,000 g / mol is applied on the first hot-melt adhesive layer; And a third hot-melt adhesive layer coated with a hot-melt adhesive containing polyolefin having a weight-average molecular weight of 3,000 to 150,000 g / mol on the second hot-melt adhesive layer.
The method according to claim 3, wherein the first hot-melt adhesive layer and the third hot-melt adhesive layer have a melting temperature of 80 to 180 占 폚, the second hot-melt adhesive layer has a melting temperature of 100 to 230 占 폚, Is lower than the second hot-melt adhesive layer temperature.
The frame for an air filter according to claim 3, wherein the first hot-melt adhesive layer and the third hot-melt adhesive layer each have a thickness of 10 to 300 占 퐉 and the second hot-melt adhesive layer has a thickness of 10 to 300 占 퐉.
The frame for an air filter according to claim 1, wherein the air filter frame is thermally fused to an adherend at 120 to 230 ° C.
(a) bending the filter media web at the same height of the mountain to obtain a filter media having a plurality of wrinkles;
(b) applying and curing a hot-melt adhesive on one side or both sides of the obtained filter media at predetermined intervals to manufacture a filter body; And
(c) thermally fusing the frame for an air filter according to any one of claims 1 to 6 to the rim surface of the fabricated filter body.
An air cleaning filter manufactured by the method for manufacturing an air cleaning filter according to claim 7.
KR1020150148942A 2015-10-26 2015-10-26 Air Filter Frame, Air Purification Filter Using the Same and Method for Priparing the Same KR101790513B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111886063A (en) * 2018-02-12 2020-11-03 康明斯滤清系统知识产权公司 Spray-coated and molded polymer layer wrapper for filter media
US11332646B2 (en) * 2016-12-19 2022-05-17 Henkel Ag & Co. Kgaa Hot melt adhesive comprising isothiazolinone fungicides

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KR102231863B1 (en) 2019-06-25 2021-03-24 박문조 Prefabricated block frame for air cleaner

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Publication number Priority date Publication date Assignee Title
JP4154584B2 (en) * 2003-01-23 2008-09-24 株式会社ユウホウ Filter unit
JP4698246B2 (en) * 2005-02-07 2011-06-08 日本バイリーン株式会社 Filter element manufacturing method, filter element manufacturing jig, and filter element manufacturing apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11332646B2 (en) * 2016-12-19 2022-05-17 Henkel Ag & Co. Kgaa Hot melt adhesive comprising isothiazolinone fungicides
CN111886063A (en) * 2018-02-12 2020-11-03 康明斯滤清系统知识产权公司 Spray-coated and molded polymer layer wrapper for filter media

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