KR20110039222A

KR20110039222A - Filter and manufacture method

Info

Publication number: KR20110039222A
Application number: KR1020110018665A
Authority: KR
Inventors: 윤경수
Original assignee: 윤경수
Priority date: 2011-03-02
Filing date: 2011-03-02
Publication date: 2011-04-15

Abstract

The present invention relates to a filtration filter (1) and a method of manufacturing the same, which maximizes the filtering efficiency and long life, and in the present invention, the filtration filter (1) on one side of the polyurethane foam (4) electrostatic nonwoven fabric (3) and the non-woven fabric (2) is attached by a non-curing liquid resin (5) of the intermediate curing state before it is completely cured, the filtration filter (1) is the edge groove (6a) of the lower mold (6) After injecting the non-foamed liquid resin (5) into the intermediate curing of the degree not to flow to leave for a certain available time, the non-woven mesh (2), the electrostatic nonwoven fabric to the upper portion of the intermediate cured non-foaming liquid resin (5) (3), after laminating the foamed urethane foam in order to combine the upper mold (7) to the lower mold (6) to press the filter member to the lower by its own weight, and elapsed in a pressurized state for a certain period of time without foaming liquid resin (5) to fully cure the nonwoven mesh (2) and electrostatic part According to the present invention, the woven fabric 3 is attached to the polyurethane foam 4 and then demolded, thereby preventing the damage of the filtration filter 1 due to the adhesive and significantly reducing the overall manufacturing labor. In addition, it is possible to expect a number of effects, such as to make the attachment surface smooth and smooth, excellent adhesion, beautiful appearance and maximize the filtering efficiency when used in the filter case (9), reducing the manufacturing cost.

Description

Filtration filter and its manufacturing method

The present invention relates to various filtration filters and a method of manufacturing the same, which will be described in more detail, so that various filtration filters such as filters for cleaners, air filters for automobiles, filters for air cleaners, and the like can be made even more smooth and smooth. It is intended to provide a filtration filter and a method of manufacturing the same that can be used in a case to maximize the filtering efficiency and long life.

In the filtration filter and the method of manufacturing the same, various filtration filters such as a cleaner filter, a car air filter, an air purifier filter, and the like are several filters such as an electrostatic non-woven fabric (CHEMICAL FILTER) and a non-woven fabric mesh on top of the polyurethane foam. As a member is laminated and attached, conventionally, the edges of the upper electrostatic nonwoven fabric and the nonwoven fabric mesh are insert-foamed into the urethane foaming liquid, and then the urethane foaming liquid is cured, and then the lower portion of the urethane foaming liquid and the polyurethane foam are bonded with an adhesive. The adhesive surface is not uniform or smooth and is not attached uniformly when bonding.The problem is that the polyurethane foam at the bottom is melted and easily separated by the adhesive, and the process of applying the adhesive increases the total manufacturing labor. It was.

In order to solve the above problems, as shown in FIG. 5, the urethane foaming solution 10 is sprayed on the edge in a state in which the nonwoven fabric mesh 2 and the electrostatic nonwoven fabric 3 are sequentially stacked on the polyurethane foam 4. The technology for manufacturing the filtration filter 1 by attaching the filter member by curing the urethane foaming solution 10 has been developed, which can reduce the manufacturing process by reducing the process of applying the adhesive because it does not use an adhesive , The problem of melting the polyurethane foam (4) by the adhesive could be solved, but in the case of a foamed liquid resin, such as the ordinary polyurethane foaming liquid (10) will swell when time elapses due to the characteristics of the material can wait until curing Since there is no filter member immediately attached, the liquid urethane foaming liquid 10 before being cured is excessively absorbed by the electrostatic nonwoven fabric 3 or, in particular, the polyurethane foam 4, so that adhesion is prevented. It is not constant and the boundary of the attachment surface is uneven, so it is not aesthetically good. Of course, when the filtration filter 1 thus manufactured is introduced into the filter case 9 as shown in FIG. 5, the filtration filter 1 and the filter case ( 9) The contact surface was not completely in contact with each other, so there was a problem that there was a gap and the filtering efficiency decreased.

The present invention has been made to solve the above problems of the prior art as a new technology, the present invention is a filter member by injecting a non-foaming liquid resin that does not swell even if time passes into the mold during the manufacture of the filter filter By stacking and attaching the phosphorous nonwoven fabric, the electrostatic nonwoven fabric and the polyurethane foam, it is possible to prevent the damage of the filter members by the adhesive without using the adhesive, to reduce the manufacturing labor, and to make the attachment more wary, As a problem to solve in the present invention, the filtration filter and its manufacturing method to achieve a variety of effects such as to maximize the filtering effect by being evenly aesthetically and beautifully inserted into the filter case to be in close contact with the inner surface of the filter case. do.

In the present invention as a specific means for solving the above problems of the polyurethane foam on the one side of the polyurethane non-woven fabric and the non-woven fabric mesh so that the adhesion surface is made evenly and smoothly by the medium-curing non-foaming liquid resin before it is completely cured The method of manufacturing the filtration filter attached, but the manufacturing method of the filtration filter is a resin injection step of injecting a foam-free liquid resin after forming a rim groove in the lower mold is fixed to the conveyor to apply a release agent to the rim groove, Intermediate resin step to allow intermediate curing by leaving the non-foamed liquid resin injected into the rim groove of the lower mold for a certain period of time, non-woven mesh, electrostatic nonwoven, Filter member interposed step of laminating the foamed urethane foam, and corresponds to the upper portion of the lower mold The pressing step of pressing the filter members downward by the upper mold formed by the upper edge of the edge pressing projection of the same shape as the lower groove of the lower mold, the upper mold is pressed downwards for a certain period of time in combination with the lower mold Complete resin curing step to completely cure non-foamed liquid resin, and non-woven mesh and electrostatic nonwoven fabric are attached to polyurethane foam by hardening non-foamed liquid resin to complete polyurethane filter, and then open upper mold and lower mold. It consists of a filter completion step of demolding by separation of the completed filtration filter.

According to the specific means for solving the above problems, the filter member is attached using a non-foamed liquid resin that does not swell over time instead of the foamed urethane liquid that has swelled when time elapses. The nonwoven fabric mesh and the electrostatic nonwoven fabric are attached to the polyurethane foam by the self-weight of the upper mold in the intermediate curing state before the curing is completely hardened. Therefore, the filter members are not attached by using an adhesive, thereby preventing the filter member from being damaged by the adhesive. Since it does not require the coating process, the total manufacturing labor of the filtration filter can be remarkably reduced, and the entire adhesive surface is uniformly adhered by curing of the non-foaming liquid resin, and the adhesive strength is excellent, and the adhesive part is even and smooth. In addition to the beauty made by the manufacturing method When the filtration filter is inserted into the filter case and used, it can be completely adhered to the filter case to maximize the filtering efficiency, and the manufacturing cost can be reduced and the manufacturing process can be reduced by semi-automating the entire process as described above. It is an invention with great effect.

1a to 1f is an exemplary view showing a manufacturing process of the filtration filter provided in the present invention
Figure 2 is a perspective view showing the configuration of the upper mold and lower mold and the filter of the present invention
Figure 3 is a cross-sectional view showing an example of use of the filtration filter produced by the present invention
Figure 4 is a process chart showing a filtration filter manufacturing method of the present invention sequentially
5 is a cross-sectional view showing an example of use of a conventional filtration filter.

The present invention will be described in more detail with reference to the above drawings.

The present invention is a filter filter (1) comprising a nonwoven fabric mesh (2), an electrostatic nonwoven fabric (3), and a polyurethane foam (4) by curing a non-foaming liquid resin (5), and a method for producing the filter filter (1). As to, the manufacturing method of the filtration filter 1 is first provided with a lower mold (6) formed with an inlet groove 61 corresponding to the size and shape of the filtration filter (1), as shown in Figure 1a, the lower mold (6) to form a rim groove (6a) having a predetermined width and depth on the inner lower edge of the inner groove (61), and swells even after elapse of time after applying a release agent to the rim groove (6a) as shown in FIG. After the non-foamed liquid resin 5 is injected (resin injection step), it is left for a certain available time so that the non-foamed liquid resin 5 does not flow to intermediate curing (intermediate curing step), FIG. 1C. As in the middle hardening is made in the rim groove (6a) of the lower mold (6) The non-woven mesh 2, which is one of the filter members, is first laid as the upper indentation groove 61 of the jean-free foaming liquid resin 5, and the other one of the filter members is the upper indentation groove 61 of the nonwoven fabric 2. Phosphorous electrostatic nonwoven fabric (3) is laminated secondly, and the polyurethane foam (4), which is another one of the filter members, is laminated to the upper third recess (61) of the electrostatic nonwoven fabric (3). I'm in here.

As described above, the nonwoven fabric mesh (2), the electrostatic nonwoven fabric (3), the polyurethane foam from the inlet groove 61 of the lower mold 6 to the upper portion of the non-foamed liquid resin 5, which is hardened intermediately in the rim groove 6a. After stacking (4) in sequence, as shown in Figure 1d to the upper mold of the lower mold (6) conveyed by the conveyor is formed in the same shape as the inlet groove 61 of the lower mold (6) to the inner groove 61 The indentation protrusion 71 to be inserted is fixed downward, and the edge pressing protrusion 7a having a constant width and height to have the same shape as the edge groove 6a of the lower mold 6 at the lower edge of the indentation protrusion 71. ) Having an upper mold (7) formed to protrude downward, and then the upper mold so that the indentation protrusion (71) of the upper mold (7) is inserted into the inlet groove (61) of the lower mold (6) as shown in FIG. (7) is coupled to the upper portion of the lower mold (6) to press the filter members by the weight of the upper mold (7) In the state in which the filter member inside the lower mold (6) is pressed by the upper mold (7), a certain period of time is elapsed to completely cure the non-foaming liquid resin (5). When the nonwoven fabric mesh 2 and the electrostatic nonwoven fabric 3 are attached to the polyurethane foam 4 by the curing of (5), and the filtration filter 1 is completed, the upper mold 7 is lowered as shown in FIG. 1F. After separating in (6) is to remove the completed filtration filter (1) in the inlet groove 61 of the lower mold 6 (filter completion step).

Looking at the lower mold (6) and the upper mold (7) used in the manufacturing method of the filtration filter (1) of the present invention in more detail with reference to Figure 2, the lower mold (6) is one side of the filter filter (1) Edge groove at the lower edge of the inlet groove 61 for injecting and molding the non-foaming mesh 2 and the electrostatic nonwoven fabric 3 to attach the polyurethane foam 4 to the polyurethane foam 4. 6a), and the upper mold 7 has an edge pressing protrusion (not shown) at the lower edge of the indentation protrusion 71 in order to more effectively press the filter members stacked above the non-foamed liquid resin 5 after being intermediately cured. 7a) is formed to protrude downward, and thus the nonwoven fabric mesh 2 and the electrostatic nonwoven fabric 3 due to the non-foaming liquid resin 5 can be more strongly attached to the polyurethane foam 4, thereby increasing the adhesive force. Long life and non-foaming liquid resin (5) Since the filter members are attached after being cured, the non-foamed liquid resin 5 does not penetrate into the respective filter members in the attaching stage of the filter members, so that the attachment surface is even and smooth and the appearance is beautiful, and the finished filtration filter 1 As shown in FIG. 3, when it is inserted into the filter case 9 which is fixedly coupled to install the filtration filter 1 in the main body 8 of the installation object such as a cleaner, the attachment surface of the filtration filter 1 is even and It is smooth, so that the close contact between the filtration filter (1) and the filter case (9) is in perfect contact with the filtering efficiency is greatly improved, and does not use an adhesive, etc., it requires a process for applying the adhesive as in the prior art Since it does not reduce the overall manufacturing labor, it is possible to reduce the manufacturing cost by semi-automating the entire process.

The filter members, which are members of the filtration filter 1, are generally used as various filters and filter agents, and a detailed description thereof is omitted. For reference, in the case of the electrostatic nonwoven fabric 3, dust or the like may be removed by electrostatic force. It collects, and has excellent water resistance, chemical resistance, and flame retardancy. Because it is a polymer, it can be easily disposed of by incineration, so it is easy to discard after use, low pressure loss, and can collect not only air but also micron dust in oil. In addition, it is possible to collect from micron to submicron particles, and the collection efficiency is particularly high for submicron particles.

The manufacturing of the filter for a cleaner by the method of manufacturing the filtration filter 1 will be described in detail with reference to FIG. 4 as an example.

1. Resin injection step

The release agent is applied to the rim groove 6a of the lower mold 6 transported on the conveyor, and the non-foamed liquid resin 5 is selected as the non-foamed urethane liquid and injected into the rim groove 6a.

2. Intermediate resin curing step

After the non-foamed urethane liquid is allowed to stand for about 1 minute 30 seconds so that the intermediate hardening does not flow.

3. Filter element insertion step

When the non-foaming urethane liquid is intermediately cured, the filter member in which the non-woven fabric mesh 2, the electrostatic nonwoven fabric 3, and the polyurethane foam 4 are sequentially stacked in the lower mold 6 is placed.

4. Pressurization stage

Next, the upper mold 7 having the same shape as that of the edge groove 6a of the lower mold 6 is lowered to the lower mold 6, and the upper mold 7 is combined with the lower mold 6 to form the upper mold 7 of the upper mold 7. Pressurized by its own weight.

5. Complete resin curing step

In the state where the upper mold (7) is combined with the lower mold (6), the non-foamable urethane liquid is allowed to fully cure so that the non-foamed urethane liquid is completely cured to a height of 3 mm and a width of 7 mm.

6. Filter completion stage

According to the curing of the non-foaming urethane liquid, the lower nonwoven fabric 2 and the electrostatic nonwoven fabric 3 are attached to the upper polyurethane foam 4 to open the upper mold 7 to open the upper mold 7 and the lower mold. Demolding in (6) to complete the filtration filter (1).

1: filtration filter 2: non-woven mesh
3: electrostatic nonwoven fabric 4: polyurethane foam
5: non-foaming liquid resin 6: lower mold
6a: Border groove 61: Inner groove
7: Upper mold 7a: Border pressing protrusion
71: interstitial protrusions 8: body
9: filter case

Claims

Attached to the top of the polyurethane foam (4) by the non-foamed liquid resin (5) of the intermediate curing state before the electrostatic nonwoven fabric (3) and the nonwoven fabric mesh (2) is completely cured, the attachment surface is made even and smooth A filtration filter characterized by the above-mentioned.

A resin injection step of injecting the non-foaming liquid resin 5 into the rim groove 6a formed in the lower mold 6,
An intermediate resin curing step of allowing the non-foamed liquid resin 5 injected into the rim groove 6a of the lower mold 6 to be left uninterrupted for a certain period of time so as not to flow;
A non-foamed liquid resin (5) incorporating a filter member for laminating a nonwoven mesh (2), an electrostatic nonwoven fabric (3), and a foamed urethane foam from the lower portion into the middle of the lower mold (6);
The filter members are pushed downward by the upper mold 7 corresponding to the upper portion of the lower mold 6, and the edge pressing protrusion 7a having the same shape as the edge groove 6a of the lower mold 6 protrudes downward. Pressing step to do,
A resin complete curing step of completely curing the non-foaming liquid resin 5 therein in a state in which the upper mold 7 is pressed downward and combined with the lower mold 6;
The upper mold 7 is opened and the non-woven mesh 2 and the electrostatic nonwoven fabric 3 are attached to the polyurethane foam 4 by completely curing the non-foaming liquid resin 5 in the lower mold 6. Method for producing a filtration filter, characterized in that consisting of a filter completion step of demolding the filtered filter (1).