JP2000015021A - Filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a filter easy to be processed and capable of being directly set in an apparatus and not requiring a frame for preventing air leakage. SOLUTION: In the case of setting a formed filter material formed by continuously folding a pleated filter material 1 after applying hot melt resin 4 and 5 to the pleat parts 2 and 3 in a bead-like shape, a pleat 3 cut at a prescribed size position of the formed filter material and pleat parts neighboring in both sides are avoided from application of the hot melt resin to give a filter requiring no frame for preventing air leakage, easy to be processed, and possible to be directly set in an apparatus.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter formed by applying a bead-like hot melt resin to a pleated portion of a pleated filter medium and folding the filter.

[0002]

2. Description of the Related Art In recent years, with the spread of air purifying equipment for improving the environment, a zigzag filter having a small pressure loss and a high collection efficiency has been developed as a filter used in air purifying equipment. There is a demand for a filter which is easy and does not leak air.

Conventionally, this type of filter is shown in FIGS.
The one shown in FIG. 14 was known. Hereinafter, the configuration will be described with reference to FIGS.

[0004] As shown in the figure, a filter medium 101 made of glass fiber or non-woven fabric is pleated and then filtered.
Pleat part 102A on the front side and pleat part 102 on the back side
B is coated with a plurality of hot melt resins 103A in a bead shape, and the hot melt resin 103
3B is continuously applied, the filter medium 101 is folded in a zigzag shape, bonded with hot melt resins 103A and 103B, and the filter medium 101 and the hot melt resin 103A are formed at the back pleated portion 102B of a predetermined size position corresponding to one unit. And 103B were cut to form a filter.

[0005]

In such a conventional filter, the hot melt resin 103A applied to the end face 104 in a plurality of beads protrudes partially at the cut portion which becomes the end face 104 in the longitudinal direction, and the filter medium 101 is formed. The filter medium 10 between the hot-melt resin 103A when incorporated into equipment (not shown) due to the unevenness of the
There is a problem that air leakage easily occurs along one surface, and it is required to prevent air leakage.

Further, the filter medium 101 and the hot melt resin 10
In order to prevent air leakage due to unevenness with 3A,
There is a problem that it is necessary to prevent air leakage by surrounding the filter side surface with 5 and filling the hot melt resin between the frame 105 and the filter end surface, thereby preventing air leakage without using the frame. Is required.

An object of the present invention is to solve such a conventional problem, and an object of the present invention is to provide a filter which is easy to process, eliminates a frame for preventing air leakage, and can be directly set in a device. .

[0008]

In order to achieve the above-mentioned object, a filter of the present invention comprises glass fiber, polyester,
Pleated filter media made of non-woven fabric such as polypropylene, hot melt resin applied to a plurality of beads provided on the front and back pleated portions of the filter media, and after applying the hot melt resin, folding and continuous And a pleat portion for cutting the molded filter material at a predetermined size position such as one unit, and a pleat portion on both sides adjacent thereto are not coated with the hot melt resin. .

According to the present invention, it is possible to provide a filter which is easy to process and does not require a frame for preventing air leakage, and which can be directly set in an apparatus.

[0010]

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pleated filter medium made of non-woven fabric such as glass fiber, polyester, polypropylene and the like, and a plurality of hot beads applied to a plurality of beads provided on the front and back pleated portions of the filter medium. A hot-melt resin; and a hot-melt resin. The hot-melt resin is applied, and then folded and continuously formed.
The configuration is such that the hot-melt resin is not applied to the pleat portion to be cut at a predetermined size position such as a platform and the adjacent pleat portions on both sides, so that the end surface cut by the pleat portion does not have the hot-melt resin applied. , Only the filter media surface, no unevenness on the end face, close contact with the device when it is set on the device, eliminating air leakage, reducing the frame for preventing air leakage, and facilitating assembly processing Having.

An embodiment of the present invention will be described below with reference to the drawings.

[0012]

(Embodiment 1) As shown in FIGS. 1 to 3, a pleated filter medium 1 made of a nonwoven fabric such as glass fiber, polyester, or polypropylene has a plurality of pleated portions 2 on a front side and a pleated section 3 on a back side. After a plurality of rows of hot melt resins 4 and 5 applied in a bead shape and hot melt resins 6 and 7 applied continuously in the vicinity of the side of the filter medium 1, the pleated portion 2 on the front side and the back side Filter medium 8 folded and formed in a zigzag shape via the pleated portion 3
The number of pleats 2 or 3 is read and controlled so that cutting can be performed at a predetermined dimensional position (c) for one of them, and cutting is performed from the pleats 3 on the back side.

At this time, the pleated portion 3 on the back side to be cut
And hot nozzles (not shown) for applying the hot melt resins 4, 5, 6, 7 so that the hot melt resins 4, 5, 6, 7 are not applied to the adjacent pleats 2 on both front sides. By controlling the application of the melt resins 4, 5, 6, and 7, the application of the hot melt resins 4, 5, 6, and 7 to the filter medium 1 and the folding thereof to form the formed filter medium 8 can be continuously performed. To do.

In the above structure, the cut surface of the formed filter medium 8 has an end face 9 on which a hot melt resin 4 applied to the front side pleated portion 2 and a hot melt resin 5 applied to the back side pleated portion 3 and the side thereof. The hot melt resins 6 and 7 that are continuously applied in the vicinity of the portion are not exposed, and no irregularities are formed on the end face 9. Therefore, when the filter is set on a device (not shown), the end face of the filter comes into close contact with the set portion of the device, thereby preventing air leakage.

Further, since the hot melt resins 5 and 7 are not applied to the pleated portion 3 of the cut portion, the cut is easy, the automatic cutting is possible, and the post-processing is also easy.

Further, even if a frame is not used, air leakage can be prevented and cost can be reduced. (Embodiment 2) As shown in FIGS. 4 to 6, hot-melt is applied only to the outer surfaces on the opposite sides of the pleats 2 on both sides adjacent to the pleats 3 for cutting the formed filter medium 8A at a predetermined dimensional position (c). The bead-shaped length of the hot melt resin 4A and the hot melt resin 6A are set so that the resin 4A and the hot melt resin 6A provided on the side portions are formed.

In the above configuration, the end face 9A of the cut filter medium 8A at the cut portion becomes flat, and when set in a device (not shown), the end surface 9A of the filter comes into close contact with the set portion of the device, resulting in air leakage. Is prevented.

Further, since the hot melt resins 4A and 6A are formed only on the outer surfaces on the opposite sides of the pleats 2 on both sides adjacent to the pleats 3 to be cut, firmly in the vertical direction so that the end face 9A does not come off. Since they are adhered, they can be set on a device without the need for a mounting frame, and the end face 9A does not peel off during setting, thereby improving the handling property.

Embodiment 3 As shown in FIG. 7, a nonwoven fabric scream 11 is adhered to the surface 10 of a molded filter medium 8B by applying heat to a hot melt resin 4B. The nonwoven fabric scream 11 is obtained by processing a nonwoven fabric into a thin film sheet having air permeability.

In the above construction, the nonwoven fabric scream 11
Is provided on the surface 10 of the formed filter medium 8B, whereby the formed filter medium 8B can be protected. Also, the nonwoven fabric scream 11 has an antiviral function by immersing the nonwoven fabric scream 11 in an aqueous solution in which the extracted component separated and purified from the green tea or black tea extract component is dissolved in pure water, lightly dewatering and drying and adding an antiviral agent. It is possible to easily obtain a filter configuration which can have air purification and antiviral effect.

(Embodiment 4) As shown in FIGS. 8 and 9, not only the entire front surface 10 of the formed filter medium 8C but also a part extending from the end surface 9B in the longitudinal direction to a part of the back surface 12 is surrounded by a nonwoven fabric scream 11A. Configuration.

In the above structure, the nonwoven fabric scream 11
By surrounding the formed filter medium 8C with A, the formed filter medium 8C can protect a part of the front surface 10, the end surface 9B and the back surface 12.

Further, an antibacterial effect can be easily obtained by adding various antibacterial agents to the nonwoven fabric scream 11A.

Further, the non-woven fabric scream 11
By being protected by A, it is possible to protect the end face 9B from being damaged when the filter is set in the device, and to reliably prevent air leakage.

(Embodiment 5) As shown in FIG. 10, on the side surface 14 of the molded filter medium 8D having the side portion fixed by a hot melt resin 13, the type necessary for handling the filter, the front and back sides at the time of setting, etc. Is printed. In this embodiment, an arrow indicating the mounting direction of the filter and a display of "front" are printed.

In the above configuration, the rigidity is improved by bonding the vicinity of the side of the molded filter medium 8D with the hot melt resin 13, so that printing 15 can be directly performed on the molded filter medium 8D. No need to add
The handling of the filter is facilitated by looking at the print 15 when handling the filter.

[0027]

As is clear from the above examples, according to the present invention, a pleated filter medium made of a nonwoven fabric such as glass fiber, polyester, or polypropylene, and pleated portions on the front and back sides of the filter medium are provided. A hot-melt resin applied in a plurality of beads and a formed filter material formed by applying the hot-melt resin, and then folding the formed hot-melt resin, and cutting the formed filter material at predetermined dimensional positions such as one unit. Since the hot melt resin is not applied to the pleated portion and the adjacent pleat portions on both sides, it is possible to provide a filter that can be easily set in a device without requiring a frame that is easy to process and prevents air leakage. it can.

The bead-like hot-melt resin is formed such that the hot-melt resin is formed only on the outer surface on the opposite side of the pleated portion on the opposite side of the pleated portion for cutting the formed filter material at a predetermined size position. Since the length is set, the end face of the filter when cut is flat, so that air leakage when the filter is set in the device can be prevented, and peeling of the end face can be prevented, thereby improving the handling property.

Further, since the nonwoven fabric scream is provided on the surface of the formed filter medium, the surface of the formed filter medium can be protected, and by adding an antibacterial agent such as an antiviral agent to the nonwoven fabric scream, the air purifying effect can be easily obtained. Can bring antibacterial effect.

Further, since the front and back surfaces of the molded filter medium and the end face in the longitudinal direction are surrounded by non-woven fabric scream, it is easy to bring an antibacterial effect to the non-woven fabric scream. It is protected from peeling off and can prevent air leakage.

Further, since the printing is performed on the side surface of the molded filter medium bonded with the hot melt resin, there is no need for a label or a frame for printing, and the handling of the filter is improved by the recognition by printing.

[Brief description of the drawings]

FIG. 1A is a cross-sectional view showing a state before cutting of a filter according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a configuration of a formed filter material of the filter.

FIG. 3 is a front view showing a hot melt resin applied state when the filter is deployed.

FIG. 4A is a cross-sectional view showing a state of the filter according to the second embodiment of the present invention before cutting, and FIG. 4B is a cross-sectional view showing a state after cutting.

FIG. 5 is a perspective view showing a configuration of a formed filter material of the filter.

FIG. 6 is a front view showing a hot melt resin applied state when the filter is deployed.

FIG. 7 (a) is a perspective view showing the structure of a formed filter medium of the filter of Example 3 of the present invention.

FIG. 8A is a front side perspective view showing a configuration of a formed filter medium of a filter according to a fourth embodiment of the present invention.

FIG. 9 is a cross-sectional view showing a configuration of a formed filter material of the filter.

FIG. 10 is a perspective view of a formed filter medium of a filter according to a fifth embodiment of the present invention.

11A is a cross-sectional view showing a state before cutting of a conventional filter. FIG. 11B is a cross-sectional view showing a state after cutting.

FIG. 12 is a perspective view of the filter.

FIG. 13 is a front view showing a hot melt resin applied state when the filter is deployed.

FIG. 14 is a partially broken perspective view showing a state in which the filter is housed in a frame.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Filter medium 2 Pleat part on the front side 3 Pleated part on the back side 4 Hot melt resin 4A Hot melt resin 5 Hot melt resin 6 Hot melt resin 6A Hot melt resin 7 Hot melt resin 8 Molded filter material 8A Molded filter material 8B Molded filter material 8C Molded filter material 8D Molding Filter media 9 End surface 9B End surface 10 Front surface 11 Non-woven fabric scream 11A Non-woven fabric scream 12 Back surface 13 Hot melt resin 14 Side surface 15 Printing

Claims (5)

[Claims] 1. A pleated filter medium made of a non-woven fabric such as glass fiber, polyester, or polypropylene, a hot melt resin applied to a plurality of beads provided on pleated portions on the front and back sides of the filter medium, and a hot melt resin. A molded filter medium formed by applying a melt resin and then folding the molded filter medium to be continuously formed, wherein the pleat portion for cutting the molded filter material at a predetermined size position such as one unit and the pleat portions on both sides adjacent to each other are provided with the hot melt resin. Filter with no coating. 2. A bead-like hot-melt resin is formed so that the hot-melt resin is formed only on the outer surface on the opposite side of the pleat portion on both sides adjacent to the pleat portion for cutting the formed filter material at a predetermined size position. The filter according to claim 1, wherein a length is set. 3. The filter according to claim 1, wherein a nonwoven fabric scream is provided on the surface of the formed filter medium. 4. The filter according to claim 1, wherein the front surface, the back surface, and the longitudinal end surface of the formed filter medium are surrounded by a nonwoven fabric scream. 5. The filter according to claim 1, wherein printing is performed on a side surface of the molded filter medium bonded with the hot melt resin.