KR20100104833A - High flux pleated catridge filter having fulx channel between pleats and method of manufacturing them - Google Patents

Abstract

PURPOSE: A bent cartridge filter and a method for manufacturing the same are provided to maintain initial flow and extend lifetime. CONSTITUTION: A bent cartridge filter comprises: a bent support-integrated porous membrane medium layer; a hot melt resin which is applied on the upper, lower or upper and lower sides of the medium membrane; The hot melt resin is one selected from the group consisting of polyether sulfone, poly sulfone, nylon 6, nylon 66, polytetrafluoride, polyvinylridene difloride and polyolefin.

Description

High flow rate bent cartridge filter secured in the mountain flow path and its manufacturing method {HIGH FLUX PLEATED CATRIDGE FILTER HAVING FULX CHANNEL BETWEEN PLEATS AND METHOD OF MANUFACTURING THEM}

The present invention relates to a high flow rate bent cartridge filter having a mountain flow path and a method of manufacturing the same, and more particularly, in a bent cartridge filter having a support-integrated porous membrane media layer, the acid of the bent porous membrane media layer ( As the resin is partially coated between the pleat), the present invention relates to a high flow rate bent cartridge filter and a method for manufacturing the same, in which the initial flow rate and the removal efficiency are maintained, the properties such as the service life extension are improved, and the effective filtration area is maximized. .

As products are integrated or refined due to high industrial development, the demand for corresponding process filters is rapidly increasing.

In the case of a liquid process filter, the filter can be classified into water treatment or oil treatment. However, as it is subdivided according to each use, various characteristics of the media are also required accordingly. In particular, in the case of a liquid process filter, various microorganisms and various heavy metals and chemicals contained in raw water must be able to be removed with high efficiency, and a long life cycle is required. In order to meet the above requirements, efforts have been made to conventionally make the cross-section of the separator into an asymmetric structure and to expand the effective filtration area of the final module element.

In general, a liquid process filter is manufactured by a casing process of bending a porous membrane media layer in which a support and a porous media are integrated in a multi-layered form, and then bonding it to an end cap, an inner core, and an outer cage. At this time, the bent form by the pleating (pleating) bending method of the conventional porous membrane media layer, the normal bending type ( Fig. 3a ), the deformation W-shaped bent shape ( Fig. 3b ) and varying the height of the modified W-shape and banana The bent form ( FIG. 3C ) is representative. In the module element, the effective filtration area can be enlarged by increasing the volume in the lateral direction.

However, such a bent form, in the process of manufacturing the element, depending on the skill of the operator, the shape deformation will occur. That is, when the number of pleats of the porous membrane media inserted into the bent cartridge filter is small, a change in the distance between the mountains may occur due to the pressure applied when the filter element is operated. In addition, as the amount of raw water to be treated increases, the filter cartridge also maximizes the filtration area accordingly, and as the density of the pleats increases, due to overlap or interference between the bent media, The flow rate and removal efficiency of the fall, and there is a problem that the use life is particularly sharply reduced.

In order to solve this problem, as a technique for realizing a high flow rate through the structural change of the porous membrane itself as a key material, Japanese Patent Publication No. 2008-272753 discloses a filter cartridge employing a porous membrane having an asymmetric structure. The photoresist sheet, a photosensitive resin, is said to be effective in removing foreign substances. However, since the filter cartridge is bent and folded in order to increase the filtration area in the filter, when a higher density of pleat is applied, a flow path between the mountains may not be secured, which may be a problem in reducing the flow rate and the service life of the filter. Can be.

In Japanese Patent Laid-Open No. 2001-340732, polyolefin and polytetrafluoroethylene (PTFE) are used as filter media, and the raw water side has a large pore size media placed on the raw water side to have an asymmetric structure, and the downstream stream A stacked filter element having a small pore size filter is disclosed. However, since the stacked filter is also bent and folded to increase the filtration area in the filter, when a higher density of pleat is applied, there is still a problem of lowering the flow rate and the service life of the filter. .

In Korean Utility Model Registration No. 20-0374623, a W-shaped bending shape having a different peak height can be manufactured through a bending height adjusting device for a filter paper bending machine, but it is somewhat advantageous to secure the flow path between mountains, This fundamental reduction is disadvantageous for high flow implementations.

In addition, by increasing the height of the filter medium to be bent and designed to fit into the element appropriately, a method of maximizing the filtration area and improving the high flow rate and related physical properties has been proposed. 7318800 and U.S. Pat. However, in such a method, the filtration area can be increased by maximizing the number of acids per unit area, but as the density of the acid increases, it is difficult to secure a passage that is filtered by the interference of the inter-acid media, thereby degrading the overall physical properties.

Accordingly, the present inventors have tried to solve the performance degradation of the filter caused by the overlap or interference between filter media in accordance with the increase in the amount of filtration raw water and the increase in the filtration area accordingly, as a result, it is easy to secure the flow path according to the acid density of the media layer Considering that the physical properties are lowered, the hot melt resin is applied to a part of the bent surface of the porous membrane media layer to secure the acid flow path in the media layer, thereby realizing excellent removal efficiency without reducing the initial flow rate and extending the service life. The present invention was completed by improving the filter performance.

An object of the present invention is to provide a bent cartridge filter having a support integrally formed porous membrane filter layer, wherein resin is applied between the pleats of the bent porous membrane filter layer to secure a flow path.

Another object of the present invention is a bent cartridge filter for a liquid process in which a support-integrated porous membrane media layer is bonded to an end cap, an inner core and an outer cage, wherein a hot melt resin is applied to a portion of the bent surface of the porous membrane media layer. It is to provide a manufacturing method of the bent cartridge filter to improve the physical properties such as high flow rate by securing the acid flow path in the filter medium layer.

In order to achieve the above object, the present invention provides a bent cartridge filter having a bent support integral porous membrane media layer, wherein the hot melt resin is applied to the upper or lower or upper and lower bent surfaces of the porous membrane media layer Provided is a high flow rate bent cartridge filter with an inter-pleat flow path secured.

The present invention partially secures the acid flow path by partially applying the hot melt resin, and at this time, it is preferable to apply 2 to 20 g of the hot melt resin per 0.5 m 2 of the filtration area of the porous membrane media layer.

The hot melt resin of the present invention uses the same material as the porous membrane media layer, and more specifically, polyether sulfone, polysulfone, nylon 6, nylon 66, polytetrafluoride, polyvinylidene difluoride and polyolefin. Select from the group consisting of use. As a more preferable hot melt resin, a polyolefin resin is used.

In the bent cartridge filter of the present invention, when the acid height in the bent support-integrated porous membrane media layer is 10 mm or more, more preferably 12 mm, the number of acids is preferably 80 to 160, based on a 10-inch length.

Further, the bent cartridge filter of the present invention has a filtration area of 0.4 m 2 or more, based on a 10 inch length standard.

The present invention prepares a porous membrane filter layer by stacking at least one support on at least one surface of the porous membrane, and after applying the hot melt resin to both ends of the porous membrane filter layer, after the heat treatment the hot melt resin The present invention provides a method of manufacturing a bent cartridge filter including bending the film in a multilayered form while cooling and curing the resin, and bonding the end cap, the inner core and the outer cage.

In the production method of the present invention, the hot melt type resin uses the same material as the porous membrane media layer, preferably polyethersulfone, polysulfone, nylon 6, nylon 66, polytetrafluoride, polyvinylidene difluoride And it can be used selected from the group consisting of polyolefin.

In addition, in the production method of the present invention, the hot melt resin is applied to the upper, lower or upper and lower portions of the porous membrane mediator layer, so that 2 to 20g per 0.5 m 2 of the filtration area of the porous membrane mediator layer, so that the acid flow path It can be secured.

Thereafter, the porous membrane filter layer is bent at 90 to 120 ° C. and 20 to 50 rpm to produce a bent cartridge filter.

According to the present invention, in a bent cartridge filter having a support-integrated porous membrane mediator layer, as the resin is partially applied between the pleats of the bent porous membrane mediator layer, there is provided a bent cartridge filter in which an acid flow path is secured. can do.

Conventionally, the bent cartridge filter of the present invention, as the density of the peak (pleat) increases, the distance between the mountains is narrowed to solve the problems caused by overlapping or interference between the bent media, initial flow rate and removal efficiency It can maintain physical properties, improve the service life, etc., and increase the effective filtration area.

Furthermore, the present invention can be used as a high flow cartridge filter in the industry, such as semiconductors and displays by providing a bent cartridge filter having improved flow properties between the pleat of the bent porous membrane media layer.

Hereinafter, the present invention will be described in detail.

The present invention provides a bent cartridge filter having a support-integrated porous membrane filter layer, wherein a resin is applied between the pleats of the bent porous membrane filter layer to secure a flow path.

1 is a cross-sectional view and a schematic view of a bent cartridge filter for a liquid process of the present invention, wherein the bent support integral porous membrane media layer (2) has an end cap (1), an inner core (3) and an outer cage (4). In the bent cartridge filter bonded to), the filter of the present invention is characterized in that the flow path is secured by the resin is applied between the pleat of the bent porous membrane media layer (2).

The coating amount of the resin is 2 to 20g per 0.5 m 2 of the filtration area of the porous membrane median layer 2 to secure a flow channel, and is not the entire application of the porous membrane median layer 2. Partially applied to the top or bottom or top and bottom (zigzag) of the bent surface of the layer. Therefore, by partially applying the resin between the mountains of the media layer, the flow path space can be secured and the effective filtration area can be maximized.

Therefore, when the coating amount of the resin per 0.5 m 2 of the filtration area of the filter medium layer 2 is formed to be less than 2 g, the effect due to the formation of the flow path space due to the application of less resin cannot be expected, and in the case of the flow path space formed in excess of 20 g, Too large flow path spacing results in less filtration area, which is undesirable.

The hot melt resin used in the present invention may use the same material as the porous membrane media layer, and examples thereof include polyether sulfone, polysulfone, nylon 6, nylon 66, polytetrafluoride, and polyvinylidene difluoro. It is selected from the group consisting of a lide and a polyolefin, more preferably a polyolefin resin is used.

Accordingly, the bent cartridge filter of the present invention has a number of acids of 80 to 160 when the acid height in the bent support integrated porous membrane media layer is 10 mm or more, more preferably 12 mm, based on a length of 10 inches. Satisfies the effective filtration area of 0.4 m 2 or more.

If the number of acids is less than 80, the filtration area is too small to secure various physical properties such as the desired flux, and if the number is more than 160, the acid density is too dense, and the effect of securing the acid flow path by the hot melt resin is exceeded. Will fall.

In particular, in the preferred embodiment of the present invention, when the effective filtration area is 0.54 m 2 and 0.92 m 2, a bent cartridge filter having the best physical properties is provided.

Specifically, when the filtration area of the liquid cartridge filter for the liquid process is 0.54 m 2, the average pore is 0.2 μm and the average flow rate is 18 to 20 lpm / psi. If the average pore is 0.45 μm, the average flow rate is 22 to 24 lpm / psi. When the average pore is 0.65㎛, the average flow rate is 32 ~ 34 lpm / psi is satisfied [ Table 1 and Table 2 ].

In addition, when the filtration area of the liquid cartridge filter cartridge is 0.92m 2, the average pore is 0.2 μm, and the average flow rate is 26 to 28 lpm / psi. If the average pore is 0.45 μm, the average flow rate is 34 to 36 lpm / psi. If the average pore is 0.65㎛ satisfies the average flow rate 44 ~ 48 lpm / psi [ Table 3 and Table 4 ].

The present invention provides a bent cartridge filter having a flow path between the pleats of the bent porous membrane media layer to improve physical properties such as high flow rate, removal efficiency, and service life, thereby providing high flow rates for semiconductors and displays. Compatible with cartridge filter requirements.

As shown in FIG . 2 , the bent porous membrane media layer 2 of the present invention is a support integral type in which a first support layer 21 and a second support layer 23 are stacked on an upper portion of a porous membrane 22. The porous membrane media layer 2 is used, but is not limited thereto, and a structure in which a support layer is stacked on at least one surface of the porous membrane 22 may be integrated.

Accordingly, the porous membrane 22 may be used without particular limitation as long as it is a material that can be used for conventional ultrafiltration and microfiltration membranes, and examples thereof include polyether sulfone, polysulfone, polyvinylidene fluoride, and polyethylene tetrafluoro. Ride, nylon 6, nylon 66 and cellulose acetate, and polyolefin-based melt blown and electrospun nanofilter media can also be applied.

As the supports 21 and 23 used in the membrane, polyolefin nonwoven fabrics and mesh products having a weight of 20 to 80 g / m 2 are used. The first support layer and the second support layer may be laminated with the same material or may not be the same material.

Preferably, in the embodiment of the present invention, when the nonwoven fabric is applied as the support layer, since the sliding phenomenon of the porous membrane 22 occurs in the bending operation, in order to prevent this, a polyolefin-based nonwoven fabric is formed on the rear surface of the porous membrane 22. A polyolefin-based nonwoven layer is formed on both outer layers so as to be arranged as a bi-support layer 23, to prevent damage to the porous membrane 22, and to improve drainage capacity (first, second support layers, 21, 23). To form a porous membrane filter layer.

The present invention prepares a porous membrane mediator layer 2 by stacking at least one support 21, 23 on at least one surface of the porous membrane 22, and hot melts on both ends of the porous membrane mediator layer 2. After applying the resin, after the heat treatment, the hot melt resin is bent in a multilayered form while cooling and curing, and the bent cartridge filter comprising bonding with the end cap (1), the inner core (3) and the outer cage (4) It provides a manufacturing method.

In the method of the present invention, before bending the porous membrane media layer 2 in which the porous membrane 22 and the support layers 21 and 23 are integrated as core media, an appropriate amount of hot melt resin is applied onto the support layer. Then, the pleating bent to an optimized number (pleat) and the height of the mountain, and then bonded in a cylindrical shape, it is characterized in that it is manufactured by bonding to the outer cage, inner core, end cap. Through the manufacturing method of the present invention, it is possible not only to secure the channel of the bent acid in the porous membrane media layer 2, but also by performing the resin coating before bending, the end cap (1) and the media layer (2) When the acid density is high at the time of interconjugation, it is possible to minimize the leakage (LEAK) generated as the molten resin is not easy to penetrate the acid.

3a to 3c As a bent form of a conventional porous membrane media layer, a general bending type, a modified W-shaped bending type and a banana bending type are shown, and the present invention is a hot melt resin partially coated on the bent surface of the porous membrane media layer to heat treatment After cooling and curing, an acid flow path space is formed through the resin-coated portion.

Figures 4a to 4d shows the type of bent cartridge filter for the liquid process in which the acid flow path is secured, according to the manufacturing method of the present invention in the bent form of the porous membrane media layer of the general bending type. Specifically, the lower portion of the bent surface of the porous membrane media layer in the form of a general bend (FIG. 4A), when formed in a zigzag manner on the upper and lower portions (FIG. 4C) or in the form of a discontinuous dot formed on the lower portion of the bent surface (FIG. 4B). It may be formed in a formed or continuous coating (Fig. 4d).

Figures 5a to 5c shows the type of bent cartridge filter for the liquid process in which the acid flow path is secured, according to the manufacturing method of the present invention in the modified W-shaped bent porous membrane media layer of the bent form, Figure 6 Is another bending form and shows the bent cartridge filter which resin was apply | coated to the bending surface of a banana bending type, and the mountain flow path was ensured.

7A to 9B, in the manufacturing process of the bent cartridge filter of the present invention, various forms according to the application amount and the application position of the hot melt resin applied on the support layer in the porous membrane media layer 2 To present. For example, when the hot-melt-type resin is applied to the porous membrane mediator layer before bending at the coating amount and the application position shown in FIG. 7B, an acid channel is formed at the lower and upper portions of the bent surface of the porous membrane mediator layer, in particular, the upper portion It may be formed in the form of discontinuous dots (Fig. 4b). In addition, when performed as shown in Figure 9a or 9b, the acid channel is formed in the lower and upper bent surface of the porous membrane media layer, in particular can be formed in a continuous coating on the upper portion (Fig. 4d).

Therefore, after setting the optimized number (pleat) and the acid height, after applying and heat treatment, the hot melt resin is pleated bending while cooling and curing. .

At this time, the coating amount of the preferred hot melt resin of the present invention is 2 to 20 g per 0.5 m 2 of the filtration area of the porous membrane media layer, and if the coating amount is less than 2 g, the effect of forming a flow path space due to the application of a small resin Unexpectedly, when it exceeds 20g, since the flow path space | gap becomes too large, the filtration area becomes small and it is unpreferable.

In addition, the application position of the preferred hot melt type resin varies depending on the height of the acid, and the hot melt resin is partially coated by alternatively selecting both ends of the supporting layer of the porous membrane media layer 2, that is, the upper and lower portions. Thus, when the entire hot melt resin is applied, it is advantageous to secure the acid flow path, but can solve the problem that the effective filtration area could not be maximized.

Therefore, through the manufacturing method of the present invention, it is possible to manufacture a bent cartridge filter for liquid process, the acid channel is secured, and has an effective filtration area of 0.4 m 2 or more.

In particular, in the embodiment of the present invention, when the effective filtration area is 0.54 m 2 and 0.92 m 2, a bent cartridge filter having the best physical properties is manufactured.

The hot melt resin used in the present invention is selected from the group consisting of polyether sulfone, polysulfone, nylon 6, nylon 66, polytetrafluoride, polyvinylidenedifluoride and polyolefin, more preferably polyolefin resin Use That is, the hot melt resin of the present invention can be selected and used in the same material group used for the porous membrane.

After applying the hot melt resin, the bending operation of the bent cartridge filter of the present invention, it is carried out under the working temperature 90 ~ 130 ℃ and bending speed 20 ~ 50 rpm conditions.

In addition, the bent porous membrane media layer is bonded to the end cap, the inner core and the outer cage, it may be carried out a thermal bonding or ultrasonic bonding method.

Hereinafter, the present invention will be described in detail by Examples and Experimental Examples.

The following Examples and Experimental Examples are only illustrative of the present invention, and the scope of the present invention is not limited to the following Examples and Experimental Examples.

≪ Example 1 >

]층의 윗쪽(내부코어쪽)과 아래쪽(외곽케이지쪽) 각각에 평량 60g/㎡의 스펀본드 부직포(SB)층(제1, 2지지체층, 21, 23)을 배열하여 여재층을 구성한 후, 이를 일정한 속도(45rpm)로 진행시키면서 폭 방향의 일정 양 끝단 부위에 길이방향으로 핫 멜트(Hot melt) 수지 5g/㎡을 도포하고, 이를 절곡기에서 온도 110℃, 압력 20ps의 조건에서 경화시켰다. Polyethersulfone membrane of 0.2 탆 thickness [product DuraPES of Membrana, Germany

] A media layer is formed by arranging spunbond nonwoven fabric (SB) layers (first, second support layers, 21, 23) having a basis weight of 60 g / m2 on each of the upper (inner core side) and lower (outer cage side) layers. While proceeding at a constant speed (45rpm), hot melt resin 5g / ㎡ was applied to both ends of the width direction in the longitudinal direction, and it was cured under conditions of temperature 110 ℃, pressure 20ps in the bending machine. .

Thereafter, both ends of the longitudinal media were welded to each other by heat or ultrasonic waves, and the outer cage, the inner core and the end cap were thermally bonded to prepare a bent cartridge filter having a length of 10 inches and a filtration area of 0.54 m 2.

<Example 2>

A bent cartridge filter was prepared in the same manner as in Example 1, except that a 0.45 μm thick polyethersulfone membrane was used and a hot melt resin was applied at 10 g / m 2.

<Example 3>

A bent cartridge filter was prepared in the same manner as in Example 1 except that a polyethersulfone membrane having a thickness of 0.65 μm was used and a hot melt resin was applied at 15 g / m 2.

Comparative Example 1

Except for omitting the hot melt resin coating process, it was carried out in the same manner as in Example 1 to prepare a bent cartridge filter.

Comparative Example 2

Except for omitting the hot melt resin coating process, it was carried out in the same manner as in Example 2 to prepare a bent cartridge filter.

Comparative Example 3

Except for omitting the hot melt resin coating process, it was carried out in the same manner as in Example 3 to prepare a bent cartridge filter.

Experimental Example 1 Property evaluation method

The preparation of the bent cartridge filter prepared in Examples 1 to 3 and Comparative Examples 1 to 3 is summarized in Table 1, and the physical properties of the bent cartridge filter were measured by the following method and described in Table 2 below.

(1) The flow rate measured the unit area and the flow rate per minute at a constant pressure of 10 psi after mounting a porous membrane media layer having a diameter of 100 mm on the disk.

(2) The bubble point was measured by wetting water or isopropyl alcohol (IPA) using a PMI Co., Ltd. model.

(3) Dirt Holding Capacity (DHC) is a membrane with a diameter of 100 mm mounted on a flat membrane evaluator (manufactured by Saehan Co., Ltd.), and then dust is deposited on the membrane at 0.9 bar, which is an initial flow rate and a constant pressure. The flow rate of the instantaneous flow rate per hour at the time of passage of 2 L of 100 ppm-containing standard solution was measured and displayed.

Experimental Example 2 Property Preparation Method

(1) Flow rate The pure water of 18 kPa was put into the pure water tank, and the flow volume in about 0.2 kg of differential pressure under the pressure of 20psi was evaluated using the flowmeter. In this case, the unit of measurement is expressed in lpm (liters / minute) per differential pressure psi.

(2) Leak was filled with pure water or alcohol in the evaluator to which the filter was put, and then passed through 15 to 30 psi compressed air to evaluate the leak.

Tables 1 and 2 below describe the manufacture and physical properties of the bent cartridge filter prepared in Examples 1-3 and Comparative Examples 1-3.

<Example 4>

]의 윗쪽(내부코어쪽)에는 평량 35g/㎡의 스펀본드 부직포층(SB)을 배열(제1지지체층, 21)하고, 아래쪽(외곽케이지쪽)에 평량 30g/㎡의 pp메쉬층을 배열 (제2지지체층, 23)하여 여재층을 구성한 후, 이를 일정한 속도(45rpm)로 진행시키면서 폭 방향의 일정 양 끝단 부위에 길이방향으로 핫 멜트(Hot melt) 수지 5g/㎡을 도포하고, 이를 절곡기에서 온도 110℃, 압력 20ps의 조건에서 경화시켰다. Polyethersulfone membrane of 0.2 탆 thickness [product DuraPES of Membrana, Germany

] Spunbond nonwoven fabric layer (SB) having a basis weight of 35 g / m2 on the upper side (inner core side), and a pp mesh layer having a basis weight of 30 g / m 2 on the lower side (outer cage side). After the second support layer (23) to form a filter layer, it proceeds at a constant speed (45 rpm) while applying 5 g / m 2 of hot melt resin in the longitudinal direction to both end portions in the width direction, and It hardened | cured at the temperature of 110 degreeC, and the pressure of 20 ps in the bending machine.

Thereafter, both ends of the longitudinal media were welded to each other by heat, and the outer cage, the inner core and the end cap were thermally bonded to prepare a bent cartridge filter having a length of 10 inches and a filtration area of 0.92 m 2.

<Example 5>

A bent cartridge filter was prepared in the same manner as in Example 1, except that a 0.45 μm thick polyethersulfone membrane was used and a hot melt resin was applied at 10 g / m 2.

<Example 6>

A bent cartridge filter was prepared in the same manner as in Example 1 except that a polyethersulfone membrane having a thickness of 0.65 μm was used and a hot melt resin was applied at 15 g / m 2.

<Comparative Example 4>

Except for omitting the hot melt resin coating process, it was carried out in the same manner as in Example 4 to prepare a bent cartridge filter.

Comparative Example 5

Except for omitting the hot melt resin coating process, it was carried out in the same manner as in Example 5 to prepare a bent cartridge filter.

Comparative Example 6

Except for omitting the hot melt resin coating process, it was carried out in the same manner as in Example 6 to prepare a bent cartridge filter.

Tables 3 and 4 below describe the manufacturing and physical properties of the bent cartridge filter prepared in Examples 4-6 and Comparative Examples 4-6.

As described above, the bent cartridge filter of the present invention ensures the mountain flow path, and as the density of the pleats increases, the distance between the mountains is narrowed to solve the conventional problem due to overlapping or interference between media. As the melt-type resin is partially applied to the bent surface of the porous membrane median layer, the initial flow rate and removal efficiency are maintained, the physical properties such as the service life extension are improved, and the effective filtration area can be increased.

Therefore, the bent cartridge filter with improved physical properties produced by the present invention can be used as a high flow cartridge filter of the industry, such as semiconductor and display.

While the invention has been shown and described with reference to certain exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims.

1 is a cross-sectional view and a schematic view of a bent cartridge filter for a liquid process of the present invention,

FIG. 2 is a cross-sectional view of a support body integrated porous membrane media layer before bending in a bent cartridge filter for a liquid process of the present invention;

Figure 3a is a bent form of a conventional porous membrane media layer, showing a general bent form,

3b is As a bent form of a conventional porous membrane media layer, it shows a modified W-shaped bend,

3c is As a bent form of a conventional porous membrane media layer, it shows a banana bent,

4A to 4D illustrate the type of bent cartridge filter for a liquid process, which ensures an acid flow path in a generally bent porous membrane media layer according to the manufacturing method of the present invention.

5a to 5c illustrate the type of bent cartridge filter for a liquid process, which secures an acid flow path in a modified W-bend type porous membrane media layer according to the manufacturing method of the present invention.

FIG. 6 illustrates a type of a bent cartridge filter for a liquid process in which an acid flow path is secured in a banana-bent porous membrane media layer according to a manufacturing method of the present invention.

7A to 7C are embodiments showing the application amount and the application position of a hot melt resin to the porous membrane media layer before bending in order to manufacture a bent cartridge filter for a liquid process having a flow path of the present invention,

8a to 8c are other embodiments showing the application amount and the application position of the hot melt resin to the porous membrane media layer before bending, in order to manufacture the bent cartridge filter for the liquid process secured the flow path of the present invention,

9A to 9B are still other embodiments showing the application amount and the application position of the hot melt resin to the porous membrane media layer before bending in order to manufacture the bent cartridge filter for the liquid process having the flow path of the present invention secured.

<Brief Description of Drawings>

1: end cap 2: membrane media layer

3: inner core 4: outer cage

21: first support layer (inner core side) 22: porous membrane

23: second support layer (outer cage side)

Claims (12)

A bent cartridge filter having a bent support integrated porous membrane filter layer, wherein a hot melt resin is applied to the upper, lower, or upper and lower surfaces of the bent surface of the porous membrane filter layer to secure an inter-pleat flow path in the filter layer. High flow bendable cartridge filter. The high flow rate bent cartridge filter according to claim 1, wherein the hot melt resin is coated with 2 to 20 g per 0.5 m 2 of filtration area of the porous membrane media layer. The high flow rate bent cartridge filter according to claim 1, wherein the hot melt resin is made of the same material as the porous membrane media layer. The method of claim 3, wherein the hot melt resin is any one selected from the group consisting of polyethersulfone, polysulfone, nylon 6, nylon 66, polytetrafluoride, polyvinylidene difluoride and polyolefin The high flow rate bent cartridge filter. 4. The high flow rate bend cartridge filter according to claim 3, wherein the hot melt resin is a polyolefin resin. The high flow rate bending according to claim 1, wherein the bent cartridge filter has an acid number of 80 to 130 when the acid height in the bent support integrated porous membrane media layer is 10 mm or more, based on a length of 10 inches. Type cartridge filter. The high flow rate bent cartridge filter according to claim 1, wherein the bent cartridge filter has a filtration area of 0.4 m 2 or more on a 10-inch-long basis. Preparing at least one support layer on at least one surface of the porous membrane to prepare a porous membrane media layer, After applying the hot melt resin to both ends of the porous membrane media layer, after the heat treatment is bent while cooling the hot melt resin, A method of manufacturing a high flow rate bent cartridge filter comprising bonding with an end cap, an inner core and an outer cage. The method of claim 8, wherein the hot melt resin is made of the same material as the porous membrane media layer. 10. The method according to claim 9, wherein the hot melt resin is any one selected from the group consisting of polyethersulfone, polysulfone, nylon 6, nylon 66, polytetrafluoride, polyvinylidenedifluoride and polyolefin. Method for producing the high flow rate bent cartridge filter. The method of claim 8, wherein the hot melt resin is applied in an amount of 2 to 20 g per 0.5 m 2 of the filtration area of the porous membrane media layer. The method of claim 8, wherein the porous membrane filter layer is bent in a multilayered state at 90 to 120 ℃ and 20 to 50 rpm conditions.

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