JP7338291B2 - Dripper and its manufacturing method - Google Patents

Description

TECHNICAL FIELD The present invention relates to a dripper and its manufacturing method, and for example, to a dripper in which contents having a component to be extracted (eg, regular coffee powder, black tea leaves, green tea leaves, etc.) are stored in advance and a manufacturing method thereof. is.

Disposable type coffee drippers are conventionally known which consist of a bag-like filter in which regular coffee grounds are enclosed in advance and a cylindrical support (sleeve-like mount) for positioning the filter on a cup. . Many of the supports are made of cardboard with both ends glued together to form a cylinder, and before use, the support is folded with a filter made of non-woven fabric attached to the inside. When brewing coffee, the filter is opened, the support body is changed from the folded state to the cylindrical open state, and then the dripper is placed on the cup. When hot water is poured into the filter, the extracted coffee passes through the filter and accumulates in the cup.

For the coffee dripper as described above, it is necessary to prevent the regular coffee grounds in the filter from scattering and the filter from breaking when the filter is opened. Conventionally, various types of drippers have been proposed. For example, the dripper described in Patent Document 1 has a configuration in which a lid is heat-bonded to an opening of a filter in order to prevent the contents from scattering. However, this configuration limits the amount of content that can be filled into the filter, so it cannot be used in a small-sized dripper as described in Patent Document 2.

Patent Documents 3 to 5 propose a dripper in which an opening of a filter is releasably closed by ultrasonic sealing via a support. These configurations pose no problem when the sealing range of the filter opening does not overlap with the overlapping portion of the support (that is, the overlapping portions of both ends of the cardboard) as in the dripper described in Patent Document 6. When the sealing range of the filter opening overlaps with the overlapping portion of the support as in the dripper described in 1., the sealing strength of the filter opening will vary.

Japanese Patent No. 4391441 Japanese Patent No. 4124352 Japanese Patent No. 3967258 Japanese Patent No. 4028456 Japanese Patent No. 4802444 Japanese Patent No. 5389588

Ultrasonic sealing is carried out using an ultrasonic sealing device comprising an ultrasonic horn (resonator), a receiving jig (anvil), and the like. Variation in the seal strength of the filter opening is due to variation in the force that the filter receives from the ultrasonic horn in the ultrasonic sealing through the support. In other words, if the overlapping portion of the support exists as an uneven thickness within the range of the ultrasonic seal with respect to the filter, the filter is strongly pressed by the overlapping portion, and the ultrasonic vibration energy strongly acts on the filter. For example, at the overlapping portion of the support, the filters are tightly sealed to each other or the outer surface of the filter is strongly sealed against the inner surface of the support (eg, a sealant layer made of polyethylene). Such a sealed filter portion makes it difficult to smoothly open the filter, and thus triggers the filter to tear when the filter is opened.

As described in Patent Documents 4 and 5, if the anvil for ultrasonic sealing is devised such as by providing a hole corresponding to the thickness of one sheet of paper (so-called "counterbore"), the sealing strength can be reduced. Uniformity can be resolved to some extent. However, since it is difficult to align the relief-processed part with the overlapping part of the support, the filter is strongly pressed by the relief-processed edge part, and the ultrasonic vibration energy strongly acts on the filter. put away. Such a sealed filter portion makes it difficult to smoothly open the filter, and thus triggers the filter to tear when the filter is opened.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and an object of the present invention is to provide a compact dripper capable of preventing the contents from scattering and the filter from breaking when the filter is opened, and a manufacturing method thereof. It is in.

In order to achieve the above object, the dripper of the first invention comprises a bag-like filter in which a content having a component to be extracted is enclosed, and a cylindrical shape that is foldable with the filter positioned inside. A dripper comprising a support of
The support is made of a folded blank plate,
The opening of the filter is releasably closed by ultrasonic sealing through the support,
An overlapping portion is formed by partially overlapping both ends of the blank plate,
A notch portion is formed at one end of the blank plate so that both ends of the blank plate do not partially overlap,
In the overlapping portion, the support is formed into a cylindrical shape by bonding both ends of the blank plate,
In the support, the sealing range by the ultrasonic sealing is arranged so as to overlap with the notch portion and not overlap with the overlapping portion.

A dripper according to a second aspect of the invention is characterized in that, in the first aspect of the invention, the number of blank plates that are overlapped by bending is two throughout the sealing range.

A dripper according to a third aspect of the present invention is the dripper according to the first or second aspect, wherein the support is arranged so that the seal range by the ultrasonic seal and the adhesion range of both ends of the blank plate do not overlap. It is characterized by

A dripper according to a fourth aspect of the invention is a dripper according to any one of the first to third aspects, wherein the cylindrical support comprises a first opening that constitutes one opening and a second opening that constitutes the other opening. and an opening, wherein the opening of the filter is attached to the first opening so that the filter opens when the support body is opened from a folded state to a cylindrical open state. do.

A manufacturing method of a fifth invention is a manufacturing method of the dripper according to any one of the first to fourth inventions,
An adhesive is applied to the overlapping portion formed by overlapping both ends of the blank plate, and a cylindrical support is formed by the adhesion,
providing the filter within the support;
placing the contents in the filter;
The opening of the filter is releasably closed by performing ultrasonic sealing via the support outside the range of adhesion by the adhesive.

A manufacturing method according to a sixth aspect of the present invention is the ultrasonic transducer according to the fifth aspect, further comprising an ultrasonic horn for applying ultrasonic vibration energy to the filter, and a receiving jig for positioning the filter. The ultrasonic sealing is performed by an ultrasonic sealing device.

According to the present invention, since the sealing range by ultrasonic sealing is arranged so as to overlap the notch portion at one end of the blank plate and not overlap the overlapping portions at both ends of the blank plate, the overlapping portions of the blank plate The thickness of the filter prevents it from being strongly pressed. As a result, since the ultrasonic vibration energy does not partially strongly act on the filter, the filters are not strongly sealed to each other or the outer surface of the filter is not strongly sealed to the inner surface of the support. Therefore, even with a small dripper, it is possible to prevent the contents from scattering and the filter from breaking when the filter is opened.

FIG. 2 is a rear view showing an embodiment of the dripper before opening. The perspective view which shows the dripper of FIG. 1 in the state after opening. FIG. 2 is a plan view showing a first specific example of a blank plate of a support that constitutes the dripper of FIG. 1; FIG. 4 is a schematic diagram showing ultrasonic sealing treatment in the dripper made up of the first specific example of the blank plate. FIG. 2 is a plan view showing a second specific example of a blank plate of a support that constitutes the dripper of FIG. 1; Schematic diagram showing ultrasonic sealing treatment in a dripper made up of a second specific example of a blank plate.

Hereinafter, drippers and the like according to embodiments of the present invention will be described with reference to the drawings. In addition, the same code|symbol is attached|subjected to the part which is mutually the same as each specific example etc., or a corresponding part, and duplication description is abbreviate|omitted suitably.

FIG. 1 shows the appearance of the dripper 1 before opening (the support 3 is folded), and FIG. 2 shows the appearance of the dripper 1 after opening (the support 3 is open). 1 is a rear view of the dripper 1, and FIG. 2 is a rear perspective view of the dripper 1 set on the cup 17. FIG. The dripper 1 consists of a bag-like filter 2 containing a content 18 (FIG. 2) containing a component to be extracted, and a cylindrical support (sleeve) that is foldable with the filter 2 positioned inside. It has a configuration of a double structure having a shaped mount) 3. This dripper 1 is suitable for carrying because the support 3 is foldable, and is suitable for disposable use because it has a simple structure that can be made of easily discarded materials. In other words, it has the advantage that it is a portable, disposable type, but can easily brew drip coffee, for example.

Contents 18 (FIG. 2; eg, regular coffee powder, black tea leaves, green tea leaves, etc.) containing the components to be extracted are enclosed in the bag-shaped filter 2 in advance. The opening 9a of the filter 2 is releasably closed by ultrasonic sealing via the support 3 so that the content 18 does not spill out from the filter 2 before the dripper 1 is used. FIG. 1 shows a sealing range 24 by ultrasonic sealing.

As for the material of the filter 2, in consideration of workability when forming into a bag shape, a sheet material having heat adhesiveness as a raw material, a sheet material having heat adhesiveness on one side (the innermost layer when made into a bag shape), etc. is preferably used. For example, water-permeable non-woven fabric made of polyolefin (polyethylene, polypropylene, etc.) or polyester material, polyolefin (polyethylene, polypropylene, etc.), polyester thermoplastic resin on one side (innermost layer when bag-shaped) A multi-layered filter paper containing in. The bag-like processing is carried out by folding the above sheet material in two or gusset-folding them, overlapping them, thermally adhering them into a predetermined shape, cutting and die-cutting.

It is the tubular support 3 that allows the filter 2 to be set on the cup 17 (FIG. 2) while maintaining the desired shape. As shown in FIG. 2, the support 3 has a first opening 7 forming one opening 7a and a second opening 8 forming the other opening 8a. A filter opening 9 is attached to the first opening 7 so that the filter 2 opens when the filter 2 is changed from the folded state (FIG. 1) to the cylindrical open state (FIG. 2). The filter 2 is attached by inserting the filter 2 into the support 3, folding a portion of the filter opening 9 outward at the edge of the first opening 7 of the support 3, and folding the folded portion onto the support 3. It is done by sticking to the outer surface. When the filter 2 is attached in this manner, when the support 3 is opened in a cylindrical shape during use, the filter 2 opens wide and becomes a state suitable for pouring or dripping.

The support 3 is formed by bending, adhering, etc., a single blank plate 3A (first example) shown in FIG. FIG. 3 is a developed view of the support 3, and the blank plate 3A is formed by punching out a plate-like sheet material as shown in the developed view (FIG. 3). The material of the blank plate 3A is not particularly limited. It can be used as a sheet material. If the blank plate 3A is made of thick paper coated with resin, even if the support 3 is exposed to hot water or steam, the rigidity of the support 3 can be prevented from being lowered.

The blank plate 3A (FIG. 3) is composed of three parts bounded by the folding line L, that is, the front plate 4, the rear plate 5 and the margin piece 6. As shown in FIG. Specific examples of the folding lines L include creases such as lead creases, press creases, cut creases, and perforated creases. A T-shaped notch 14, a V-shaped notch 15, a fan-shaped hole 16, and a concave portion N are symmetrically provided in the front plate 4 and the rear plate 5, respectively. The notch 14 is positioned at a portion corresponding to the second opening 8 (FIGS. 1 and 2) of the support 3, and the notch 15 is located at the first opening 7 (FIGS. 1 and 2) of the support 3. ), and the hole 16 is located between the portions corresponding to the first and second openings 7 and 8 . The paste margin piece 6 is provided with a rectangular notch portion 25A. The notch portion 25A is positioned so as to overlap the seal area 24 (FIG. 1) in a portion corresponding to the first opening 7 (FIGS. 1 and 2) of the support 3. As shown in FIG. By pressing the filter 2 through the hole 16 when the filter 2 is mounted inside the support 3 , relative displacement of the filter 2 with respect to the support 3 can be effectively suppressed.

A plurality of projecting portions 11 and leg portions 13 are formed in a portion corresponding to the second opening portion 8 (FIGS. 1 and 2) of the support 3, as shown in FIG. In other words, the protruding portion 11 is formed at the position of each bending line L and the bonding position (overlapping portion 20 in FIGS. 1 and 2), and the leg portion 13 is formed between the positions of the two bending lines L. formed. Two leg portions 13 are formed by the same notch 14, and a concave portion N is formed on each leg portion 13 on the projecting portion 11 side. The combination of the concave portion N and the notch 14 allows the leg portion 13 to be bent toward the second opening 8 side of the support 3 while suppressing waste of the sheet material when forming the blank plate 3A. . In addition, in order to prevent the leg 13 from being unintentionally opened, the notch 14 is partially provided with a connecting portion (blade stopping portion) (on the tip side of the leg 13).

When assembling the support 3, first, the blank plate 3A is bent along the bending line L of the boundary between the front plate 4 and the rear plate 5 so that the front plate 4 and the rear plate 5 are overlapped. Next, the blank plate 3A is folded along the bending line L at the boundary between the front plate 4 and the paste strip 6 so that the paste strip 6 overlaps the back plate 5. - 特許庁In this state, when the paste strip 6 is adhered to the back plate 5, the blank plate 3A becomes cylindrical and the support 3 in the folded state is obtained. A notch portion 25A is formed at one end of the blank plate 3A so that both ends of the blank plate 3A do not partially overlap. On the other hand, both ends of the blank plate 3A form overlapping portions 20 by partially overlapping each other. Therefore, by bonding both ends of the blank plate 3A at the overlapping portions 20, the support 3 is formed into a tubular shape. Adhesion of the margin strip 6 to the back plate 5 is performed by applying an adhesive (for example, hot-melt adhesive) to the overlapped portion 20 formed by overlapping both ends of the blank plate 3A and to three adhesion areas 22 (FIG. 1). It is done by coating.

A filter 2 is provided in the cylindrical support 3 as described above. As described above, the filter 2 is attached to the support 3 by inserting the filter 2 into the support 3, folding outward part of the filter opening 9 at the edge of the first opening 7 of the support 3, This is done by attaching the folded portion to the outer surface of the support 3 with an adhesive (for example, hot-melt adhesive).

By folding the blank plate 3A along each folding line L, a folding line M (FIGS. 1 and 2) is formed at each folding line L position. When the left and right folding lines M are pressed toward each other with respect to the folded support 3 (FIG. 1), the force concentrates on the lower end of the notch 15 and the upper and lower ends of the hole 16, causing the notch 15 and the hole to collapse. Two creases along the line 16 are likely to occur on each of the front panel 4 and the rear panel 5 . Therefore, the blank plate 3A can be easily bent. By this folding, creases M (FIGS. 1 and 2) are formed at the positions of the respective folding lines L, and as shown in FIG. Square openings 7a and 8a are formed. Then, the support body 3 is in a cylindrical open state (FIG. 2), and a substantially hexagonal opening 9a is formed in the filter opening 9 as well. In order to increase the capacity of the dripper 1, the bottom of the filter 2 is preferably gusset-folded.

In the second opening 8 of the support 3 assembled as described above, a pair of protrusions 11 facing each other through the opening 8a, two pairs of legs 13 facing each other through the opening 8a, is formed. When the blank plate 3</b>A is folded along the folding line L to open the support 3 , the projecting portion 11 and the leg portion 13 are arranged at predetermined positions of the second opening 8 . That is, protrusions 11 are provided at both folding positions (positions where folds M are formed) in the folded state of the support 3 ( FIG. 1 ), and legs 13 are provided between the two protrusions 11 . Since the projecting portion 11 and the leg portion 13 are arranged in the second opening portion 8 of the support 3 in a well-balanced manner, the center of gravity of the dripper 1 is lowered as a whole and stabilized.

The content 18 is put into the filter 2 from the opening 9a, and the opening of the filter 2 can be peeled off by performing ultrasonic sealing via the support 3 outside the bonding area 22 of the adhesive at the overlapping portion 20. When closed, the dripper 1 (Fig. 1) is obtained in the unopened state. The plan view of (A) and the front view of (B) in FIG. 4 (the ultrasonic sealing device is omitted) schematically show how the filter 2 is subjected to ultrasonic sealing treatment using the ultrasonic sealing device. show. Ultrasonic sealing is performed by using an ultrasonic sealing device equipped with an ultrasonic horn 31 that applies ultrasonic vibration energy to the filter 2 and an anvil (receiving jig) 32 that positions the filter 2. done.

The overlapping portion 20 of the support 3 does not exist within the sealing area 24 (FIGS. 1 and 4(B)). That is, in the support 3 , the sealing range 24 by ultrasonic sealing is arranged so as to overlap the notch portion 25</b>A and not overlap the overlapping portion 20 . Therefore, even if the support 3 is pressed against the anvil 32 by the ultrasonic horn 31 (FIG. 4(A)), the number of the blank plates 3A that are overlapped by bending is two throughout the sealing range 24, so the filter 2 are not strongly pressed at the overlapping portion 20.例文帳に追加As a result, since the ultrasonic vibration energy does not partially strongly act on the filter 2, the uniformity of the sealing strength can be obtained. For example, the outer surface of the filter 2 is not strongly sealed against a sealant layer made of polyethylene). Therefore, in the overlapped portion 20 of the blank plate 3A, there is no strong sealed portion that triggers the filter 2 to break when unsealing. Breakage can be prevented.

The same applies to the adhesion area 22 . Since the bonding area 22 of the adhesive for holding the support 3 in a cylindrical shape is located outside the sealing area 24, the filter 2 is not strongly pressed by the unstable thickness of the adhesive. . That is, in the support 3, as shown in FIGS. 1 and 4B, the sealing range 24 by ultrasonic sealing and the bonding range 22 by the adhesive are arranged so as not to overlap each other. The filter 2 is not strongly pressed due to the unstable thickness of . As a result, since the ultrasonic vibration energy does not partially strongly act on the filter 2, the uniformity of the sealing strength can be obtained. For example, the outer surface of the filter 2 is not strongly sealed against a sealant layer made of polyethylene). Therefore, in the bonding area 22 with the adhesive, there is no strong sealed portion that triggers the tearing of the filter 2 when the filter 2 is opened. can be prevented.

Since the overlapping portion 20 is composed of the back plate 5 and the paste margin piece 6, the overlapping portion 20 can be removed from the seal area 24 by providing the notch portion 25A in the back plate 5 instead of providing the notch portion 25A in the paste margin piece 6. It is possible to remove it. Therefore, a blank plate 3B is shown in the plan view of FIG. 5 as a second specific example having the notch portion 25B in the back plate 5, and the state of the ultrasonic sealing process when the dripper 1 is manufactured using the blank plate 3B is shown. It is shown in FIG. A plan view of (A) and a front view of (B) in FIG. 6 show a state in which ultrasonic sealing is applied to the filter 2 using an ultrasonic sealing device, as in FIGS. 4 (A) and (B). is schematically shown.

The rear plate 5 is provided with a rectangular cutout portion 25B (FIG. 5). The notch portion 25B is positioned so as to overlap the seal area 24 (FIG. 6) in a portion corresponding to the first opening 7 (FIGS. 1 and 2) of the support 3. As shown in FIG. A notch portion 25B is formed at one end of the blank plate 3B so that both ends of the blank plate 3B do not partially overlap each other. By bonding both ends of the blank plate 3B at , the support 3 is formed into a cylindrical shape.

The overlapping portion 20 of the support 3 does not exist within the sealing area 24 (FIG. 6(B)). That is, in the support 3 , the sealing range 24 by ultrasonic sealing is arranged so as to overlap the notch portion 25B and not overlap the overlapping portion 20 . Therefore, even if the support 3 is pressed against the anvil 32 by the ultrasonic horn 31 (FIG. 6A), since the number of blank plates 3B that are overlapped by bending is two over the entire sealing range 24, the filter 2 are not strongly pressed at the overlapping portion 20.例文帳に追加As a result, since the ultrasonic vibration energy does not partially strongly act on the filter 2, the uniformity of the sealing strength can be obtained. For example, the outer surface of the filter 2 is not strongly sealed against a sealant layer made of polyethylene). Therefore, in the overlapped portion 20 of the blank plate 3B, there is no strong sealed portion that may cause the filter 2 to break when unsealing. Breakage can be prevented.

When using the dripper 1, for example, when brewing coffee, the filter 2 is unsealed, the support 3 is changed from the folded state (FIG. 1) to the tubular open state (FIG. 2), and the filter 2 is opened. , the dripper 1 is placed on the cup 17 . When hot water is poured into the filter 2 through the opening 9a, the extracted coffee passes through the filter and accumulates in the cup. Since the inside of the cup 17 can be seen through the hole 16, the amount of coffee inside the cup 17 can be easily confirmed while pouring hot water. By pouring a predetermined amount of hot water into the filter 2 through the opening 9a in this way, a beverage (coffee, black tea, green tea, etc.) in which desired components are extracted from the contents 18 in the filter 2 is poured into the cup 17. Obtainable.

When the dripper 1 with the cylindrical support 3 in the open state is placed on the cup 17 as described above, the projecting portion 11 is positioned inside the rim of the cup 17 as shown in FIG. The leg portion 13 is positioned outside the second opening 12 , and the tip portion of the leg portion 13 is positioned outside the rim of the cup 17 . Due to the restoring force of the support body 3 trying to return to the folded state (FIG. 1), the rim of the cup 17 is pushed from the inside and outside by the protruding portion 11 located inside the cup 17 and the leg portion 1 located outside the cup 17. Since it is strongly pressed, even a dripper 1 with a large capacity is held in a stable state.

Since the bent shape of the leg 13 (e.g. locking in the bent position) limits the movement of the support 3 at the rim of the cup 17, the position of the dripper 1 cannot be fixed without the presence of the cup 17. do not have. That is, if the edge of the cup 17 is within the range from the second opening 8 to the bent position of the leg 13, the dripper 1 can be set on the cup 17 while keeping the shape of the dripper 1 open. . Therefore, it is possible to deal with a wide variety of cups 17 (various cup sizes, cup shapes, etc.). Depending on the size and shape of the cup, the dripper 1 may be set on the cup 17 so that the protruding portion 11 is positioned outside the rim of the cup 17. The dripper 1 may be set on the cup 17 with .

As described above, according to this embodiment, the sealing range 24 by ultrasonic sealing overlaps the notch portions 25A, 25B at one ends of the blank plates 3A, 3B, and overlaps both ends of the blank plates 3A, 3B. Since the blank plates 3A and 3B are arranged so as not to overlap with the portion 20, the filter 2 is not strongly pressed by the thickness of the overlapping portion 20 of the blank plates 3A and 3B. As a result, since the ultrasonic vibration energy does not partially strongly act on the filter 2, the filters 2 are not strongly sealed against each other or the outer surface of the filter 2 is strongly sealed against the inner surface of the support 3. do not have. Therefore, even with a small-sized dripper 1, it is possible to prevent the contents 18 from scattering and the filter 2 from breaking when the filter 2 is opened. Moreover, since non-uniformity in sealing strength can be resolved on the side of the dripper 1, it is possible to significantly reduce costs compared to the case where the ultrasonic sealing device is used to deal with the problem.

Reference Signs List 1 Dripper 2 Filter 3 Support 3A, 3B Blank plate 4 Front plate 5 Back plate 6 Glue margin piece 7 First opening 8 Second opening 9 Filter opening 7a, 8a, 9a Opening 11 Projection 13 Leg 14 Notch 15 Notch 16 Hole 17 Cup 18 Contents 20 Overlapping portion 22 Bonding area 24 Sealing area 25A, 25B Notch 31 Ultrasonic horn (ultrasonic sealing device)
32 anvil (receiving jig, ultrasonic sealing device)
L fold line M crease N recess

Claims (6)

A dripper comprising: a bag-shaped filter enclosing a content having a component to be extracted; and a cylindrical support that is foldable with the filter positioned inside,
The support is made of a folded blank plate,
The blank plate is composed of a front plate, a rear plate, and an adhesive strip,
The margin piece is continuously provided at one end of the front plate,
The rear plate is connected to the other end of the front plate,
the length from one end to the other end of the front plate is longer than the length from one end to the other end of the rear plate;
Both ends of the blank plate are composed of both the other end of the back plate and one end of the margin strip, and one end of the blank plate is one end of the other end of the back plate and one end of the margin strip. consists of only one side,
A first bending line is provided at a boundary between the one end of the front plate and the other end of the paste strip,
A second bending line is provided at the boundary between the other end of the front plate and the one end of the rear plate,
the first bending line is formed to extend to reach the upper end of the blank plate;
The opening of the filter is releasably closed by ultrasonic sealing through the support,
An overlapping portion is formed by partially overlapping both ends of the blank plate,
A notch portion is formed at one end of the blank plate so that both ends of the blank plate do not partially overlap,
In the overlapping portion, the support is formed into a cylindrical shape by bonding both ends of the blank plate,
A dripper according to claim 1, wherein said supporting body is arranged such that a sealing range of said ultrasonic seal overlaps with said notch portion and does not overlap with said overlapping portion. One end of the blank plate on which the cutout portion is formed is composed only of the other end of the back plate, and the number of blank plates that are overlapped by bending is two over the entire sealing range. The dripper according to claim 1. In the support, the seal range by the ultrasonic seal and the bonding range at both ends of the blank plate are arranged so as not to overlap, and the bonding range extends from the first bending line in the overlapping portion. 3. The dripper according to claim 1, wherein a plurality of drippers are arranged along the direction . The cylindrical support has a first opening that constitutes one opening and a second opening that constitutes the other opening, and when the support is opened from a folded state to a cylindrical open state, 4. The dripper according to any one of claims 1 to 3, wherein the opening of the filter is attached to the first opening so that the filter opens. A method for manufacturing a dripper according to any one of claims 1 to 4,
An adhesive is applied to the overlapping portion formed by overlapping both ends of the blank plate, and a cylindrical support is formed by the adhesion,
providing the filter within the support;
placing the contents in the filter;
A manufacturing method, wherein the opening of the filter is releasably closed by performing ultrasonic sealing through the support outside the range of adhesion by the adhesive. The ultrasonic sealing is performed by an ultrasonic sealing device including an ultrasonic horn for applying ultrasonic vibration energy to the filter and a receiving jig for positioning the filter. The manufacturing method according to claim 5.

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