JP2020189258A - Non-woven filter - Google Patents

Abstract

To provide a direct attachment-type non-woven filter, which allows a peel-off paper to be easily peeled off.SOLUTION: A non-woven filter is attached to a plastic spacer of an air-conditioning cloth fan, which can be easily attached to and detached from the spacer. An infeed or a cut line, which allows a peel-off paper superimposed on a filter main body to be easily peeled off when the filter is directly attached to the spacer as a fan support material, is formed in the non-woven filter main body. In particular, a cut line as a cutting part is formed in a predetermined length, through a non-cutting part, in a small protrusion part in an ear shape protruded from the filter main body. This allows a part of the pel-off paper and further the whole of the paper to be extremely easily peeled off from the indeed provided in a small protruding piece (an ear).SELECTED DRAWING: Figure 1

Description

The present invention relates to a non-woven fabric filter, for example, a non-woven fabric filter used by being attached to a case of an electric fan mounted on a jacket.

Conventionally, as a filter used by being attached to a ventilation port, for example, the one described in Patent Document 1 has been known. By attaching a filter with an adhesive to the inside of the ventilation port on the wall of the house, it is possible to remove dirt from the outside air that enters through the ventilation port and pollen that causes allergies. It is a sealed air filter that can be used. The filter that has sufficiently adsorbed dirt is a disposable air filter that can be easily removed from the ventilation port.
Specifically, a gauze-like material used for an air purifier or the like is processed according to the shape of the ventilation port, and a weakly viscous adhesive is applied to attach it to the ventilation port. Adhesive is applied to the air filter and attached to the side wall of the ventilation port of the house. After use, peel it off and throw it away.

Utility Model Registration No. 3062814

However, since the air filter of Patent Document 1 has a structure in which an adhesive is applied to gauze and directly attached to the ventilation port on the wall surface, it does not have a release paper and is extremely inconvenient for handling such as storage and transportation. Had the problem.
In addition, a filter that covers the ventilation port frame with a bag-shaped filter instead of the stick-on type has also been known, but this has a drawback that it is not easy to use because a mounting frame is required.

Therefore, as a result of diligent research, the inventor put a release paper on the back surface of the non-woven fabric filter body via an adhesive, and provided a cut on the outer peripheral edge of the main body to easily peel off the release paper from the cut and filter. The present invention was completed by discovering that the main body can be directly attached to the ventilation port forming material.

That is, an object of the present invention is to provide a non-woven fabric filter that can be directly attached by simply peeling off the release paper and that can be easily peeled off from the non-woven fabric filter material.

The invention according to claim 1 is a non-woven fabric filter provided with a sheet-like non-woven fabric filter main body and a release paper laminated on one surface of the filter main body with an adhesive. This is a non-woven fabric filter in which a cut or a notch having a predetermined length is formed on the outer peripheral edge portion of the paper to separate a part or all of the release paper into a plurality of parts.

In the non-woven fabric filter, an adhesive (adhesive) is applied to one surface (front surface or back surface) of the non-woven fabric filter body, and a release paper having the same shape or a different shape from the filter body is applied through the adhesive layer (adhesive). It is a structure in which (release paper) is laminated and laminated. The filter body is in the form of a sheet having a predetermined thickness and has an arbitrary outer shape, but can be circular or square.
The non-woven fabric filter body having a sheet shape means that the filter body has a thin paper-like shape or a flat shape having a predetermined area.
The non-woven fabric filter body in this case is formed in an area and a shape according to the intended use. For example, when it is used for the air intake port of an electric fan built in a jacket (work jumper, etc.), the area is circular according to the size of the air intake port portion of the electric fan. If it is attached to the air intake of the air conditioner, make it rectangular. The shape may be square (square) or round (circular) according to the application.
The non-woven fabric here refers to a sheet-like material that is entwined without weaving fibers. Nonwoven fabric refers to a cloth made by adhering or entwining fibers by thermal, mechanical or chemical action. Here, the manufacturing method is not limited.
The release paper has, for example, the same shape as the filter body and has a predetermined thickness, and is laminated and adhered to one surface of the filter body (nonwoven fabric) via an adhesive. A commercially available product can be used as the release paper.
A cut or a notch having a predetermined length is formed in the outer peripheral edge portion of the non-woven fabric filter. These cuts or cuts are for separating a part or all of the release paper into a plurality of parts. Since the non-woven fabric filter is formed by superimposing release paper of the same size and shape on one surface of the filter body, the above-mentioned cut or notch cuts at least the release paper with respect to the filter body and the release paper. It is formed to a depth and shape that can be separated.
The notch in this case includes a cut end, a V-shaped notch, and an elongated slit.
This cut or notch is formed in the outer peripheral edge portion of the non-woven fabric filter. The shape of the non-woven fabric filter is assumed to be, for example, circular, quadrangular, triangular, oval, etc., or when the filter body and release paper are circular, a semicircular protrusion protrudes from a part of the outer peripheral edge thereof. To. In this case, a cut or a notch can also be formed in this protrusion.
The cut or notch is set to a predetermined length extending straight or curved, and further extending from the outer peripheral edge toward the center of the main body, for example, linearly. Alternatively, it can be formed into a predetermined shape such as a semicircle, a zigzag shape, or a key shape. Further, it may be a half-moon shape, a V-shaped notch, or the like.
Further, this cut or notch shall penetrate from the front surface to the back surface of, for example, a laminated product of the release paper and the main body. The filter body and release paper are cut. In this case, at least the release paper has been cut. That is, even if the thickness of the non-woven fabric is large, at least the release paper needs to have a cut (cut). This is because the release paper is separated into a plurality of portions, which makes it easy to remove the release paper from the filter body.

The cut can be formed so as to extend from the outer peripheral edge of the protrusion by a predetermined length toward the inside of the radiation starting from a position inside the radiation by a predetermined length. Alternatively, when the protrusion is not formed, it can be cut and formed by a predetermined length from the outer peripheral edge of the filter body to the inside in the radial direction from the inner position via the uncut portion. That is, when there is a protrusion, a cut is not made only for a slight length from the outer edge of the protrusion, and an extra length portion (non-cut portion) without a cut is provided. This is the same even when the filter body does not have a protrusion, which means that the cut does not extend to the outer edge.
The cut may be straight or gently curved, and the length thereof is arbitrary, but at least a length that can be pinched with fingers and peeled off is required.
The cut can be formed by a single continuous line or by a perforation. If the filter body is a perfect circle, the cut extends toward the center of the circle. If the protrusion is semi-circular, it will move toward the center of the circle.
Also, the number of cuts is not limited to singular. For example, in the case of a circular filter body, protrusions may be provided on opposite sides of the circumferential direction separated by 180 degrees in the circumferential direction, and cuts may be formed in each. The cut can also be formed by, for example, two cutting lines parallel to the protrusion.
The protrusion may be semi-circular or rectangular. In the case of a rectangular protrusion, it is preferable that the cut extends toward the center of the main body.

The non-woven fabric filter is attached to, for example, an air suction port portion of an electric fan. It can be directly attached to the casing that is the cover of the electric fan. In addition to the electric fan, it can be attached to the intake portion of the air conditioner and the vent wall that does not have the electric fan so as to cover the vent. It can also be set in the air intake of the cooling fan of a personal computer.
Further, in the present invention, it can be applied not only as an air filter but also as a filter for filtering water, for example. For example, it does not prevent its application as a drainage filter.

In addition, the electric fan includes a case where it is attached to a jacket (clothes), or a case where it is attached to a helmet or a hat. It can also be applied as a filter for removing dust, pollen, etc. of an electric fan built in a work jacket commercially available as so-called air-conditioned clothes.

In the invention according to claim 2, a protrusion protruding outward from the outer peripheral edge is formed on a part of the outer peripheral edge of the filter body, and the cut or notch is formed in the protrusion. The non-woven fabric filter according to claim 1.
The non-woven fabric filter includes a sheet-shaped non-woven fabric filter main body and a release paper laminated on one surface of the filter main body with an adhesive. A protrusion protruding from the outer peripheral edge is formed on a part of the outer peripheral edge of the filter body. The protrusion extends from the outer peripheral edge toward the center, and is formed with a cut or notch having a predetermined length penetrating from the front surface to the back surface of the non-woven filter made of the filter body and the release paper.
The cut or notch is formed at least in the protrusion and does not prevent it from being extended from the protrusion and provided in the filter body. The cut penetrates at least the front and back surfaces of the release paper, that is, cuts the release paper. It is preferable to cut the non-woven fabric portion (filter body) as well, but even if only the release paper is cut, it is included in the extension of the present invention. The notch is, for example, a V-shaped notch.

The invention according to claim 3 is the nonwoven fabric filter according to claim 1, wherein the cut or notch extends from the outer peripheral edge of the filter body toward the center of the filter body.
For example, in the case of a circular filter body, there are cuts and cuts extending in the radial direction toward the center of the circle. In the case of a quadrangle, it is assumed that it extends toward the center of the quadrangle. If there is a protrusion, it can be a cut or a notch extending in the same direction.
In the production of a non-woven filter, a adhesive is sprayed on the back surface of a non-woven fabric produced in a large area, for example, in a roll shape, and a release paper is superposed on the spray surface to adhere. Then, by pressing the integrated release paper and the non-woven fabric main body into a predetermined shape, cutting and manufacturing is performed. In this press, protrusions and cuts (cuts) can be formed (manufactured) at the same time. That is, there is no increase in the number of processes from the conventional manufacturing process.

According to the fourth aspect of the present invention, the cut extends from the outer peripheral edge of the filter body or the protrusion by a predetermined length from the outer peripheral edge of the protrusion to the inside of the radiation starting from the radiation inner position. The non-woven fabric filter according to any one of claims 1 to 3.
Some cuts start from a slightly inward position on the outer rim, with an uncut portion left on the outer rim, rather than from the outer rim.
In this case, in the procedure for peeling the release paper from the filter body, the filter body is held so that the release paper is on the front side of the cut, and the release paper and the filter body are torn together from this cut to break the cut. Make sure it extends to the outer periphery. As a result, a cut of sufficient length is formed on the outer peripheral edge of the filter body. Further, by pressing the right side and the left side of the cut in different directions with a finger, that is, pressing the right side of the cut and pulling the left side at the same time, the release paper is separated from the filter body (a part of the release paper is peeled off). The entire release paper can be cleanly peeled off from the non-woven fabric filter body by pinching and peeling off the partially peeled release paper.

The invention according to claim 5 is the nonwoven fabric filter according to any one of claims 1 to 4, which is attached to an air suction port portion of an electric fan.
The non-woven filter is placed on the air inlet of an electric fan (in this case, the concept includes a fan), for example, a small fan with built-in various devices (including an air conditioner), the indoor side of the ventilation fan fan, and the indoor side of the range hood. can do. The basis weight, size, thickness, etc. of the non-woven fabric filter body are designed according to their uses.

The invention according to claim 6 is the non-woven fabric filter according to claim 5, wherein the electric fan is attached to clothing including a jacket.
This non-woven fabric filter can be used as a filter for an electric fan arranged at an intake port of an electric fan built in so-called air-conditioned clothes (a kind of work jacket). In order to remove dust, pollen, etc., it is possible to improve the removal / blocking performance with a non-woven fabric. The non-woven fabric filter body shall be designed (ventilation rate, etc.) according to the application.

According to each of the inventions according to claims 1 to 6, the release paper which is integrally adhered to and laminated with the sheet-shaped non-woven fabric filter main body can be peeled off from the cut or the cut very easily. As a result, the filter body can be easily adhered (attached) to, for example, an air suction port portion. It is possible to provide a non-woven fabric filter with dramatically improved usability.
In particular, by forming a protrusion on a part of the outer peripheral edge of the filter body and arranging the cut or notch in the protrusion, the release paper peeling work (work with both hands or one hand) is further simplified. become.
In addition, since the above-mentioned cut is formed so as to extend inward from the outer peripheral edge slightly from the radiation inner position as a starting point, the release paper can be easily peeled off from the filter body during normal transportation and storage operations. However, it is possible to enlarge a small cut by working (operation) in a predetermined procedure, and it is possible to further improve workability (operability) when peeling the release paper.

According to these inventions, one side of the non-woven fabric filter body coated with the adhesive can be easily adhered to the wall surface of the device to be attached. Workability at that time can be improved.
In addition, it is not necessary to use double-sided tape, other adhesives, mounting magnets, planar filters, etc. when attaching the filter body, which contributes to cost reduction. In addition, it is possible to eliminate the trouble of arranging the rubber on the edge of the non-woven fabric filter main body and covering the target equipment.

It is a top view (a) and a partial side sectional view (b) which shows the non-woven fabric filter which concerns on Example 1 of this invention. It is an enlarged view (a) which shows the small protrusion part of the nonwoven fabric filter which concerns on Example 1 of this invention, and is the partial view (b) of the nonwoven fabric filter when there is no small protrusion. It is a partial figure which shows the use example of the nonwoven fabric filter which concerns on Example 1 of this invention. It is an enlarged view which shows the small protrusion part of the nonwoven fabric filter which concerns on Example 2 of this invention. It is an enlarged view which shows the small protrusion part of the nonwoven fabric filter which concerns on Example 3 of this invention. It is an enlarged view which shows the small protrusion part of the nonwoven fabric filter which concerns on Example 4 of this invention. It is an enlarged view which shows the small protrusion part of the nonwoven fabric filter which concerns on Example 5 of this invention. It is an enlarged side view (A) and the enlarged front view (B) which show the small protrusion part of the nonwoven fabric filter which concerns on Example 6 of this invention. It is a perspective view which shows the non-woven fabric filter which concerns on Example 7 of this invention.

Hereinafter, examples of the present invention will be specifically described with reference to the drawings.

In FIGS. 1 to 3, 10 indicates a non-woven fabric filter. The non-woven fabric filter 10 is an example of being used as a filter for an air-conditioned clothes fan. Therefore, the non-woven fabric filter 10 has a perfectly circular non-woven fabric filter body 11 having a thickness of 1.5 to 3 mm and a diameter of about 10 cm, and is sprayed on the back surface of the filter body 11. Release papers 12 having the same size and shape are laminated and attached via an adhesive. The filter body 11 is formed with a semicircular protrusion 13 protruding from a part of the outer peripheral edge of a substantially perfect circle.

The protrusion 13 is formed with a cut 14 having a predetermined length extending in the radial direction at the center thereof. As shown in FIG. 2A, the cut 14 has a predetermined length C toward the center of a perfect circle inward in the radial direction by an extra length portion (non-cut portion) 15 having a predetermined length from the outer peripheral edge of the protrusion 13. Is only formed. The cut 14 is formed by cutting both the non-woven fabric filter body 11 and the release paper 12 so as to penetrate the front and back surfaces of the filter body and the release paper laminate. In the figure, a is the length of the extra length portion (non-cut portion) 15, b is the distance between the start point of the cut 14 at the semicircular protrusion 13 and the center of the protrusion, and c is the radial direction of the cut 14. The extending length is indicated by d, and the width of the protrusion 13 is indicated by d. Incidentally, the length of the extra length portion 15 is preferably 0.5 mm to 1.0 mm. The length c of the cut 14 is 5 mm, and the distance b from the start end of the cut 14 to the center of the protrusion 13 is also 10 mm. The radius e of the protrusion 13 is 10.5 to 11 mm. Further, the protruding width (outer peripheral length of the portion protruding from the perfect circle) d of the protruding portion 13 is set to about 20 mm.

While the cut 14 has a length of 5 mm, the length of the extra length portion 15 on the extension line of the cut is set to about 0.5 mm, so that the non-woven fabric is immediately torn at the protrusion 13 of the non-woven fabric main body 14. Instead, it is peeled off from the release paper 12, and then the extra length portion 15 is broken. That is, the release paper 12 is easily peeled off from the main body non-woven fabric.
Note that FIG. 2B shows a case where a cut 14a is formed in the circular non-woven fabric main body 11 having no protrusions formed. In this case as well, the cut 14 extends in the radial direction and cuts the laminated body vertically, and an uncut extra length portion is provided between the start end of the cut and the outer peripheral edge of a perfect circle with a length of, for example, about 0.5 mm. Has been done. Other configurations are the same.

The non-woven fabric body 14 used here is made of polyester / modal acrylic fiber, but in addition to this, inorganic fibers such as rock wool / glass, natural fibers such as cotton / linen, rayon / nylon / ester / vinylon. -Synthetic fibers such as vinyl chloride may be used. Modaacrylic, flame-retardant rayon, vinylon ester, and carbon fiber are used as filters that are particularly required to be flame-retardant and non-flammable. Since it is used as a filter for air-conditioned clothes fans this time, a mixed fiber of polyester and moda acrylic was used in consideration of elasticity in the thickness direction and use in places where fire is used.
Weight of non-woven filter body 11, 20~100g / ^{m 2,} particularly as 50 g / ^{m 2.}
Further, as the adhesive to be used, an acrylic acid ester resin adhesive which adheres lightly to the resin molded product of the air-conditioned clothes fan and has an adhesive strength to the extent that it does not fall off is used. The amount of resin in this case is 5 to 20 g / ^{m 2,} preferably between 10 g / ^{m 2.}
As a method of adhering the adhesive to the non-woven fabric, there are a printing method, an impregnation method, a transfer method and the like, but this time, the adhesive was applied to the back surface of the non-woven fabric main body 11 by a spray method in order to ensure air permeability.

As a method for manufacturing the present non-woven fabric filter, an adhesive is adhered to the back surface of one non-woven fabric (for example, a roll-shaped non-woven fabric) by a spray method. The reason for spraying is that it does not impair the breathability of the non-woven fabric. Next, a predetermined release paper having the same size was laminated on the pressure-sensitive adhesive-coated surface to laminate the release paper on the entire back surface of the non-woven fabric sheet (laminated body). Further, the laminated filter body / release paper is pressed to have a predetermined shape, that is, a shape in which a protrusion is formed on a part of the outer peripheral edge of a perfect circle, and a cut 14 is formed at a predetermined position on the protrusion 13. To do.
Through the above steps, the non-woven fabric filter 10 is manufactured.

A procedure for peeling the release paper 12 from the main body non-woven fabric 11 from the protrusion 13 will be described with reference to FIG. As shown in this figure, it is assumed that the protrusion 13 is pinched with the right finger and the right half is pushed, and at the same time, the left half is pulled toward you with the left finger. As a result, the release paper 14 is peeled off from the non-woven fabric 11, and the extra length portion 15 is torn and broken.
Then, a part of the release paper 14 in the peeled portion is pinched and the entire release paper 12 is peeled off in order from the non-woven fabric which is the filter main body 11. This operation becomes extremely easy, and anyone can easily peel off the release paper 12.
The filter body 11 from which the release paper 12 has been peeled off is attached to a bone-shaped case (plastic spacer) surrounding the fan of the air-conditioning clothing by the adhesive. It can be easily attached to the intake port portion.

As described above, the non-woven fabric filter 10 according to this embodiment has a semicircular protrusion 13 that is circular and protrudes from the outer peripheral edge thereof, and a cut 14 extending in the radial direction is formed in the protrusion 13. ing. The protrusion 13 is a semicircle having a radius of about 10 mm, and the cut 14 has an extra length portion 15 of about 0.5 mm to 1.0 mm, which is not cut (not cut) from the peripheral portion (end). A cut 14 having a length of 4 to 5 mm is inserted.
However, the shape of the main body, the presence or absence of protrusions (ears), etc. can be changed as appropriate, and in the present invention, a cut having a predetermined length is formed in the radial direction (direction toward the center). , The release paper can be easily peeled off from the non-woven fabric of the main body. Structural changes suitable for this purpose can be made as appropriate. It is also within the scope of the present invention to change the length of the cut, the number of cuts (such as making two parallel cuts), and making this a perforation. Further, since it does not matter whether or not there is a thickness cut in the non-woven fabric main body, it is necessary that a cut is formed and cut at least in the cut.

FIG. 4 is an enlarged view showing a small protrusion 21 of the non-woven fabric filter 20 according to the second embodiment of the present invention.
In this embodiment, a straight line formed by a perforation is formed as a cut 22 in the small protrusion 21. The straight line is formed so as to extend in the radial direction toward the center of the main body by a predetermined length (the length that can divide the entire small protrusion into two). The perforations 22 are formed not only on the release paper but also on the filter body.
Other configurations are the same as those in the above embodiment.
In the non-woven fabric filter 20 according to this embodiment, when a force is applied so as to shift the small protrusion 21 picked by a finger to the left or right, the release paper is spread from the cut 22 (perforation) to the left and right two parts. It can be divided and separated. The release paper can be easily separated and peeled from the filter body. Other actions are the same as those in the above embodiment.

FIG. 5 is an enlarged view (plan view of a part of the sheet-shaped filter) showing the small protrusions 31 of the non-woven fabric filter 30 according to the third embodiment of the present invention.
In this embodiment, a V-shaped notch (notch) 32 is formed in the small protrusion 31. Notches are formed on both the filter body and the release paper. For example, after manufacturing a circular non-woven fabric filter 30 with small protrusions, these are punched out by stamping in the front and back directions, and a V-shaped notch 32 is formed only in the small protrusions 31. The V-shaped notch 32 is formed toward the center of the circle. The opening width of the notch (notch, cut) 32 is arbitrary, but is not more than half of the semicircular circumference of the small protrusion 31 (the depth is such that the notch does not reach the circular body).
Therefore, in this embodiment, by pinching the notch forming portion of the small protrusion 31 and moving the finger to the left or right, a part of the release paper is peeled off from the filter main body, and the release paper as a whole can be easily peeled off from the other main body. It becomes.
Other constituent actions are the same as those in the above embodiment. The notch shape and notch size are appropriately formed.

FIG. 6 is an enlarged view showing a small protrusion 41 of the non-woven fabric filter 40 according to the fourth embodiment of the present invention. In this embodiment, a U-shaped punched cut 42 is formed in the small protrusion 41. In the cut 42, the opening side of the U-shape is formed so as to be located toward the outside of the radiation, and the release paper is peeled from the filter main body from the cut (U-shape) 42 by the punching by pinching the formed portion. .. The release paper is easily separated from the non-woven fabric (filter body). The release paper portion itself inside the punched cut 42 will be torn and separated from the other portions. Therefore, peeling is easy and reliable. Other configurations are the same as those in the above embodiment.

FIG. 7 is an enlarged view showing a small protrusion 51 of the nonwoven fabric filter 50 according to the fifth embodiment of the present invention. In this embodiment, a crescent-shaped punched void (slit; notch) 52 is formed at the base of the small protrusion 51 (connecting portion with the circular body) along the circumferential direction. In the notch 52 according to this embodiment, when the small protrusion 51 is pinched and pulled toward the outside of the radiation, only the release paper is easily torn and peeled off. Other configurations are the same as those in the above embodiment.

FIG. 8 is an enlarged side view (A) and an enlarged front view (B) showing a small protrusion 61 of the nonwoven fabric filter 60 according to the sixth embodiment of the present invention. The release paper according to this embodiment is formed in an overhanging shape with a part of the release paper notched 62 from the small protrusion 61 or the filter body. By pinching the overhang portion 62 of the release paper 63, the release paper 63 can be peeled off from the non-woven fabric main body 64 very easily. Moreover, this work can be performed quickly. That is, it is a non-woven fabric filter 60 in which the shape of the protrusion 61 of the filter main body 64 is formed in advance so that the semicircular shape is cut, and the circular release paper 63 with the semicircular small protrusion is overlapped.
Only a part of the release paper is projected by the notched filter body according to this embodiment, and the release work can be easily proceeded by pinching this part. The arrow indicates the direction when a part of the release paper (overhang part) is peeled off.
Other configurations and effects shall be the same as those of the above-mentioned examples.

FIG. 9 is a perspective view showing a non-woven fabric filter 70 and a small protrusion 71 thereof according to the seventh embodiment of the present invention.
In this embodiment, the filter body 72 is formed into a rectangular shape and is attached to the air intake port portion of the air conditioner for use. A semi-circular small protrusion 71 is formed in the middle of the long side of the main body 72, and a V-shaped notch 73 is formed in the small protrusion 71 toward the center of the main body. The notch 73 is formed so as to cut out a rectangular main body 72 which is a non-woven fabric and a release paper 74 on the back surface of the main body.
In the notch 73 according to this embodiment, when the small protrusion 71 is pinched by the fingers of both hands and pulled toward the outside of the notch, only the release paper 74 is easily torn and peeled off. Other configurations are the same as those in the above embodiment. The adhesive layer on the back surface of the main body may be arranged in a band shape (rectangle) only on the outer peripheral edge portion, and the release paper may have the same shape as the adhesive layer portion accordingly.

The present invention is useful, for example, as a technique for a non-woven fabric filter for an electric fan.

10 filter 11 filter body,
12 Release paper,
13 protrusions,
14 breaks,
15 Extra length part (non-cut part).

Claims (6)

Sheet-shaped, non-woven filter body and
A non-woven fabric filter provided with a release paper laminated on one surface of the filter body via an adhesive.
A non-woven fabric filter in which a cut having a predetermined length or a cut having a predetermined shape is formed on the outer peripheral edge portion of the non-woven fabric filter to separate a part or all of the release paper into a plurality of parts. The non-woven fabric filter according to claim 1, wherein a protrusion protruding outward from the outer peripheral edge is formed on a part of the outer peripheral edge of the filter body, and the cut or notch is formed in the protrusion. .. The non-woven fabric filter according to claim 1, wherein the cut or notch extends from the outer peripheral edge of the filter body toward the center of the filter body. Any one of claims 1 to 3, wherein the cut extends from the outer peripheral edge of the filter body or the protrusion by a predetermined length from the radiation inner position as a starting point toward the radiation inner side. The non-woven fabric filter according to item 1. The non-woven fabric filter according to any one of claims 1 to 4, which is attached to an air suction port portion of an electric fan. The non-woven fabric filter according to claim 5, wherein the electric fan is attached to clothing including a jacket.

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