JP2021016536A - Dripper and manufacturing method of the same - Google Patents

Abstract

To provide a small-sized dripper capable of preventing scattering of contents and breakage of a filter when the filter is opened, and to provide a manufacturing method of the same.SOLUTION: A substrate 3 comprises a folded blank plate, and an opening of a filter 2 is peelably closed by an ultrasonic seal via the substrate 3. An overlapping part 20 is formed due to that both ends of the blank plate are partially overlapped, and a notch part 25A is formed in the one end of the blank plate so as not to overlap partially both ends of the blank plate. In the overlapping part 20, both ends of the blank plate are adhered so as to form the substrate 3 in a cylindrical shape. In the substrate 3, a seal range 24 by the ultrasonic seal is arranged so as to be overlapped on the notch part 25A, and not to be overlapped on the overlapping part 20.SELECTED DRAWING: Figure 1

Description

The present invention relates to a dripper and a method for producing the same, and for example, the present invention relates to a dripper in which contents having components to be extracted (for example, regular coffee powder, black tea leaves, green tea leaves, etc.) are stored in advance and the method for producing the dripper. Is.

A disposable coffee dripper consisting of a bag-shaped filter in which regular coffee powder is pre-sealed, a tubular support (sleeve-shaped mount) for locating the filter on a cup, and a disposable coffee dripper has been conventionally known. .. Most of the supports are made into a tubular shape by adhering both ends of the cardboard so that they overlap each other, and the support before use is folded with a filter made of non-woven fabric attached inside. When brewing coffee, the filter is opened, the support is changed from the folded state to the tubular open state, and then the dripper is placed on the cup. When boiling water is poured into the filter, the extracted coffee passes through the filter and accumulates in the cup.

The coffee dripper as described above needs to prevent the regular coffee powder in the filter from scattering or the filter from being torn when the filter is opened. Various types of drippers have been conventionally proposed. For example, the dripper described in Patent Document 1 has a structure in which a lid is heat-bonded to the opening of a filter in order to prevent the contents from scattering. However, since this configuration limits the filling amount of the contents to the filter, it cannot be adopted for a small dripper as described in Patent Document 2.

Patent Documents 3 to 5 propose a dripper in which the opening of the filter is detachably closed by an ultrasonic seal via a support. These configurations are not a problem when the sealing range of the filter opening does not overlap with the overlapping portion of the support (that is, the overlapping portion at both ends of the thick paper) as in the dripper described in Patent Document 6, but Patent Document 2 When the sealing range of the filter opening overlaps with the overlapping portion of the support as in the dripper described in the above, the sealing strength of the filter opening varies.

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

The ultrasonic sealing is performed by using an ultrasonic sealing device composed of an ultrasonic horn (resonator), a receiving jig (anvil), and the like. The variation in the sealing strength of the filter opening is due to the variation in the force that the filter receives from the ultrasonic horn in the ultrasonic sealing via the support. That is, 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 at the overlapping portion, and the ultrasonic vibration energy strongly acts on the filter. For example, in the overlapping portion of the supports, the filters are strongly sealed to each other, or the outer surface of the filter is strongly sealed to the inner surface of the support (for example, a sealant layer made of polyethylene). The filter portion sealed in this way makes it difficult to open the filter smoothly, and thus causes the filter to break when the filter is opened.

As described in Patent Documents 4 and 5, if a relief process (a hole called a so-called “counterbore”) for one sheet of paper is applied to the anvil for ultrasonic sealing, the sealing strength will be inferior. The uniformity can be eliminated to some extent. However, since it is difficult to align the part where the relief process is performed and the overlapping part of the support, the filter is strongly pressed at the edge part of the relief process, and the ultrasonic vibration energy strongly acts on the filter. It ends up. The filter portion sealed in this way makes it difficult to open the filter smoothly, and thus causes the filter to break when the filter is opened.

The present invention has been made in view of such a situation, and an object of the present invention is to provide a small dripper capable of preventing scattering of contents and tearing of the filter when the filter is opened, and a method for manufacturing the same. It is in.

In order to achieve the above object, the dripper of the first invention is a bag-shaped filter in which a content having a component to be extracted is enclosed, and a tubular shape formed so as to be foldable with the filter located inside. A dripper with a support and
The support is made of a bent blank plate.
The opening of the filter is detachably closed by the ultrasonic seal via the support.
An overlapping portion is formed by partially overlapping both ends of the blank plate.
A notch 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, both ends of the blank plate are adhered to form the support into a tubular shape.
The support is characterized in that the sealing range of the ultrasonic seal is arranged so as to overlap the notch portion and not overlap the overlapping portion.

The dripper of the second invention is characterized in that, in the first invention, the number of blank plates overlapped by bending is two over the entire sealing range.

In the first or second invention, the dripper of the third invention is arranged so that the sealing range by the ultrasonic seal and the bonding range at both ends of the blank plate do not overlap in the support. It is characterized by being.

In the dripper of the fourth invention, in any one of the first to third inventions, the tubular support constitutes a first opening forming one opening and a second opening forming the other opening. It is characterized in that the opening of the filter is attached to the first opening so that the filter opens when the support has an opening and is changed from the folded state to the tubular open state. To do.

The manufacturing method of the fifth invention is the 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 tubular support is formed by the adhesion.
The filter is provided in the support body,
Put the contents in the filter,
It is characterized in that the opening of the filter is detachably closed by performing ultrasonic sealing through the support outside the range of adhesion by the adhesive.

In the fifth aspect of the present invention, the manufacturing method of the sixth invention includes an ultrasonic horn for applying ultrasonic vibration energy to the filter and a receiving jig for positioning the filter. The ultrasonic sealing device is characterized in that the ultrasonic sealing is performed.

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

The rear view which shows one Embodiment of a dripper in the state before opening. The perspective view which shows the dripper of FIG. 1 in the state after opening. FIG. 5 is a plan view showing a first specific example of a blank plate of a support constituting the dripper of FIG. The schematic diagram which shows the ultrasonic sealing process in the dripper which comprises 1st specific example of a blank plate. FIG. 3 is a plan view showing a second specific example of a blank plate of a support constituting the dripper of FIG. The schematic diagram which shows the ultrasonic sealing process in the dripper which consists of 2nd specific example of a blank plate.

Hereinafter, the dripper and the like according to the embodiment of the present invention will be described with reference to the drawings. It should be noted that the same parts and corresponding parts of each specific example and the like are designated by the same reference numerals, and duplicate description will be omitted as appropriate.

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 tubular open state of the support 3). FIG. 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. The dripper 1 is a bag-shaped filter 2 in which a content 18 (FIG. 2) having a component to be extracted is enclosed, and a tubular support (sleeve) formed so as to be foldable with the filter 2 located inside. It has a double structure having a shaped mount) 3. The 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 constructed of a material that can be easily disposed of. That is, although it is a portable disposable type, it has an advantage that, for example, drip coffee can be easily brewed.

The content 18 having the component to be extracted (FIG. 2; for example, regular coffee powder, black tea leaves, green tea leaves, etc.) is pre-sealed in the bag-shaped filter 2. Then, the opening 9a of the filter 2 is detachably closed by an ultrasonic seal via the support 3 so that the content 18 does not spill out from the filter 2 before the dripper 1 is used. The sealing range 24 by the ultrasonic seal is shown in FIG.

As the material of the filter 2, a sheet material having heat adhesiveness as a material, a sheet material having heat adhesiveness on one side (the innermost layer when made into a bag shape), etc., in consideration of processability when making a bag shape, etc. It is preferable to use. For example, a water-permeable non-woven fabric made of a material such as polyolefin (polyethylene, polypropylene, etc.), polyester, etc., a thermoplastic resin such as polyolefin (polyethylene, polypropylene, etc.), polyester, etc. on one side (the innermost layer when made into a bag). Examples thereof include a multi-layered filter paper contained in. The bag-shaped processing is performed by overlapping the sheet materials by folding them in half or gussets, heat-bonding them to a predetermined shape, and cutting and die-cutting them.

It is the tubular support 3 that makes it possible to set the filter 2 on the cup 17 (FIG. 2) while keeping the filter 2 in a predetermined 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, and the support 3 has a support 3. A filter opening 9 is attached to the first opening 7 so that the filter 2 opens when the tube is changed from the folded state (FIG. 1) to the tubular open state (FIG. 2). To attach the filter 2, the filter 2 is inserted into the support 3, a part of the filter opening 9 is folded outward at the edge of the first opening 7 of the support 3, and the folded portion is folded outward of the support 3. It is done by sticking it on the outer surface. When the filter 2 is attached in this way, when the support 3 is opened in a tubular shape during use, the filter 2 opens wide and is in a state suitable for pouring or drip.

The support 3 is formed by bending, adhering, or the like of one blank plate 3A (first specific example) shown in FIG. FIG. 3 is a developed view of the support 3, and the blank plate 3A is formed by punching a plate-shaped sheet material as shown in the developed view (FIG. 3). The material of the blank plate 3A is not particularly limited, and for example, thick paper such as water resistant card paper or ivory paper or thick paper coated with resin (polyethylene or the like) on both sides (particularly the inner surface of the support 3) may be used. It can be used as a sheet material. If the blank plate 3A is made of thick paper coated with resin, it is possible to prevent the support 3 from being lowered in rigidity even if it is exposed to hot water or steam.

The blank plate 3A (FIG. 3) is composed of three portions having a bending line L as a boundary, that is, a front plate 4, a back plate 5, and a glue margin piece 6. Specific examples of the folding line L include ruled lines such as lead ruled lines, push ruled lines, cut ruled lines, and sewing machine ruled lines. The front plate 4 and the back plate 5 are provided with a T-shaped notch 14, a V-shaped notch 15, a fan-shaped hole 16, and a recess N symmetrically. The notch 14 is located at a portion corresponding to the second opening 8 (FIGS. 1 and 2) of the support 3, and the notch 15 is the first opening 7 of the support 3 (FIGS. 1 and 2). ), And the hole 16 is located in the middle of the portion corresponding to the first and second openings 7 and 8. The glue margin piece 6 is provided with a rectangular notch portion 25A. The notch portion 25A is located at a portion corresponding to the first opening 7 (FIGS. 1 and 2) of the support 3 so as to overlap the seal range 24 (FIG. 1). When the filter 2 is mounted in the support 3, the relative positional deviation of the filter 2 with respect to the support 3 can be effectively suppressed by pressing the filter 2 through the hole 16.

As shown in FIG. 3, a plurality of protrusions 11 and legs 13 are formed in a portion of the support 3 corresponding to the second opening 8 (FIGS. 1 and 2). That is, 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 located between the positions of the two bending lines L. It is formed. Two leg portions 13 are formed by the same notch 14, and a recess N is formed on the protruding portion 11 side of each leg portion 13. By the combination of the recess N and the notch 14, the leg portion 13 is formed in a shape 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 order to prevent the leg portion 13 from being inadvertently opened, the notch 14 is provided with a connecting portion (blade stopper) partially (on the tip end side of the leg portion 13).

When assembling the support 3, first, the blank plate 3A is bent along the bending line L at the boundary between the front plate 4 and the back plate 5 so that the front plate 4 and the back plate 5 overlap each other. Next, the blank plate 3A is bent along the bending line L at the boundary between the front plate 4 and the glue margin piece 6, so that the glue margin piece 6 overlaps the back plate 5. When the glue margin piece 6 is adhered to the back plate 5 in this state, the blank plate 3A becomes tubular 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 are partially overlapped to form an overlapping portion 20. Therefore, the support 3 is formed into a tubular shape by adhering both ends of the blank plate 3A at the overlapping portion 20. In the adhesion of the glue margin piece 6 to the back plate 5, an adhesive (for example, a hot melt adhesive) is applied to the overlapping portion 20 formed by overlapping both ends of the blank plate 3A in the adhesion range 22 (FIG. 1) at three locations. It is done by applying.

A filter 2 is provided in the support 3 which is tubularized as described above. To attach the filter 2 to the support 3, as described above, the filter 2 is inserted into the support 3, and a part of the filter opening 9 is folded outward 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, a hot melt adhesive).

By bending the blank plate 3A along each bending line L, a crease M (FIGS. 1 and 2) is formed at the position of each bending line L. When the left and right creases M are pressed against the folded support 3 (FIG. 1) in a direction approaching each other, the force is concentrated on the lower end of the notch 15 and the upper and lower ends of the hole 16, and the notch 15 and the hole Two creases along the number 16 are likely to occur on each of the front plate 4 and the back plate 5. Therefore, the blank plate 3A can be easily bent. By this bending, creases M (FIGS. 1 and 2) are formed at the positions of the respective bending lines L, and as shown in FIG. 2, the first opening 7 and the second opening 8 of the support 3 are substantially six. Square openings 7a and 8a are formed. Then, the support 3 is in a tubular open state (FIG. 2), and a substantially hexagonal opening 9a is also formed in the filter opening 9. In addition, in order to increase the capacity of the dripper 1, it is preferable to fold the bottom of the filter 2 in a gusset.

The second opening 8 of the support 3 assembled as described above includes a pair of protruding portions 11 facing each other through the opening 8a, and two pairs of legs 13 facing each other through the opening 8a. Is formed. When the support 3 is opened in a tubular shape by bending the blank plate 3A along the bending line L, the protrusions 11 and the legs 13 are arranged at predetermined positions of the second opening 8. That is, the protrusions 11 are provided at the bent positions (positions where the creases M are formed) on both sides of the support 3 in the folded state (FIG. 1), and the legs 13 are provided between the two protrusions 11. Since the protruding portion 11 and the leg portion 13 are arranged in the second opening 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 opening of the filter 2 can be peeled off by inserting the content 18 into the filter 2 from the opening 9a and performing ultrasonic sealing through the support 3 outside the range 22 of adhesion by the adhesive at the overlapping portion 20. When closed, the dripper 1 (FIG. 1) in the unopened state is obtained. The plan view of (A) and the front view of (B) in FIG. 4 (the ultrasonic sealing device is not shown) schematically show how the filter 2 is subjected to ultrasonic sealing treatment using the ultrasonic sealing device. Shown. The ultrasonic seal uses an ultrasonic seal device including an ultrasonic horn 31 for applying ultrasonic vibration energy to the filter 2 and an anvil (reception jig) 32 for positioning the filter 2. Will be done.

The overlapping portion 20 of the support 3 does not exist within the sealing range 24 (FIGS. 1 and 4 (B)). That is, in the support 3, the sealing range 24 by the ultrasonic seal is arranged so as to overlap the notch portion 25A and not to overlap the overlapping portion 20. Therefore, even if the support 3 is pressed against the anvil 32 by the ultrasonic horn 31 (FIG. 4A), the number of blank plates 3A overlapped by bending is two over the entire sealing range 24, so that the filter 2 Is not strongly pressed by the overlapping portion 20. As a result, since the ultrasonic vibration energy does not partially act strongly on the filter 2, the uniformity of the sealing strength can be obtained. For example, the filters 2 are strongly sealed with each other or the inner surface of the support 3 ( For example, the outer surface of the filter 2 is not strongly sealed against the polyethylene sealant layer). Therefore, in the overlapping portion 20 of the blank plate 3A, a strong sealing portion that triggers the filter 2 to be torn when opened does not occur. Therefore, even with the small dripper 1, the contents 18 when the filter 2 is opened and the contents 18 of the filter 2 are scattered. It is possible to prevent tearing.

The same applies to the bonding range 22. Since the adhesive range 22 for holding the support 3 in a tubular shape is located outside the seal range 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 the ultrasonic seal and the bonding range 22 by the adhesive are arranged so as not to overlap with 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 act strongly on the filter 2, the uniformity of the sealing strength can be obtained. For example, the filters 2 are strongly sealed with each other or the inner surface of the support 3 ( For example, the outer surface of the filter 2 is not strongly sealed against the polyethylene sealant layer). Therefore, in the adhesive range 22, there is no strong sealing portion that triggers the filter 2 to tear when the filter 2 is opened. Therefore, even with a small dripper 1, the contents 18 are scattered or the filter 2 is torn when the filter 2 is opened. Can be prevented.

Since the overlapping portion 20 is composed of the back plate 5 and the glue margin piece 6, by providing the notch portion 25A on the back plate 5 instead of providing the glue margin piece 6, the overlapping portion 20 can be provided from the seal range 24. It is possible to remove it. Therefore, as a second specific example in which the notched portion 25B is provided on the back plate 5, a blank plate 3B is shown in the plan view of FIG. 5, and the state of the ultrasonic sealing process when manufacturing the dripper 1 using the blank plate 3B is shown. It is shown in FIG. The plan view of (A) and the front view of (B) in FIG. 6 show that the filter 2 is subjected to ultrasonic sealing treatment using an ultrasonic sealing device as in FIGS. 4 (A) and 4 (B). Is schematically shown.

The back plate 5 is provided with a rectangular notch portion 25B (FIG. 5). The cutout portion 25B is located at a portion corresponding to the first opening 7 (FIGS. 1 and 2) of the support 3 so as to overlap the seal range 24 (FIG. 6). At both ends of the blank plate 3B, a notch portion 25B is formed at one end of the blank plate 3B so as not to partially overlap, but since the overlapping portion 20 is formed by partially overlapping, the overlapping portion 20 is formed. By adhering both ends of the blank plate 3B, the support 3 is formed into a tubular shape.

The overlapping portion 20 of the support 3 does not exist within the sealing range 24 (FIG. 6 (B)). That is, in the support 3, the sealing range 24 by the ultrasonic seal is arranged so as to overlap the notch portion 25B and not to overlap the overlapping portion 20. Therefore, even if the support 3 is pressed against the anvil 32 by the ultrasonic horn 31 (FIG. 6A), the number of blank plates 3B overlapped by bending is two over the entire sealing range 24, so that the filter 2 Is not strongly pressed by the overlapping portion 20. As a result, since the ultrasonic vibration energy does not partially act strongly on the filter 2, the uniformity of the sealing strength can be obtained. For example, the filters 2 are strongly sealed with each other or the inner surface of the support 3 ( For example, the outer surface of the filter 2 is not strongly sealed against the polyethylene sealant layer). Therefore, in the overlapping portion 20 of the blank plate 3B, a strong sealing portion that triggers the filter 2 to be torn when opened does not occur. Therefore, even with the small dripper 1, the contents 18 when the filter 2 is opened and the contents 18 of the filter 2 are scattered. It is possible to prevent tearing.

When the dripper 1 is used, for example, when brewing coffee, the filter 2 is opened, the support 3 is changed from the folded state (FIG. 1) to the tubular open state (FIG. 2), and then the filter 2 is opened. , The dripper 1 is placed on the cup 17. When boiling water is poured into the filter 2 from 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 from the hole 16, the amount of coffee in the cup 17 can be easily confirmed while pouring boiling water. In this way, by pouring a predetermined amount of boiling water into the filter 2 from the opening 9a, a beverage (coffee, black tea, green tea, etc.) in which the desired component is extracted from the content 18 in the filter 2 is placed in the cup 17. Obtainable.

When the dripper 1 in which the support 3 is in the tubular open state as described above is placed on the cup 17, the protruding portion 11 is located inside the edge of the cup 17, as shown in FIG. The leg portion 13 will be located outside the second opening 12, and the tip portion of the leg portion 13 will be located outside the edge of the cup 17. Due to the restoring force of the support 3 trying to return to the folded state (FIG. 1), the edge of the cup 17 is formed from the inside and outside by the protrusion 11 located inside the cup 17 and the leg 1 located outside the cup 17. Since it is strongly pressed down, it is maintained in a stable state even with a large-capacity dripper 1.

Since the movement of the support 3 is restricted by the edge of the cup 17 due to the bent shape of the leg portion 13 (for example, locking at the bent position), the position of the dripper 1 can be fixed without the presence of the cup 17. Absent. 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 portion 13, the dripper 1 can be set on the cup 17 while keeping the shape of the dripper 1 in the open state. .. Therefore, it is possible to cope with a wide variety of cups 17 (various cup sizes, cup shapes, etc.). Depending on the cup size and cup shape, the dripper 1 may be set on the cup 17 so that the protruding portion 11 is located outside the edge of the cup 17, and the protruding portion 11 is omitted and only the leg portion 13 is used. The dripper 1 may be set on the cup 17 with.

As described above, according to this embodiment, the sealing range 24 by the ultrasonic seal overlaps with the notched portions 25A and 25B at one end of the blank plates 3A and 3B, and the both ends of the blank plates 3A and 3B overlap. Since the filter 2 is arranged so as not to overlap 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 act strongly on the filter 2, the filters 2 may be strongly sealed with each other or the outer surface of the filter 2 may be strongly sealed with respect to the inner surface of the support 3. Absent. Therefore, even a small dripper 1 can prevent the contents 18 from scattering and the filter 2 from being torn when the filter 2 is opened. Moreover, since the non-uniformity of the sealing strength can be eliminated on the dripper 1 side, it is possible to significantly reduce the cost as compared with the case where the ultrasonic sealing device side handles the non-uniformity.

1 Dripper 2 Filter 3 Support 3A, 3B Blank plate 4 Front plate 5 Back plate 6 Glue allowance piece 7 1st opening 8 2nd opening 9 Filter opening 7a, 8a, 9a Opening 11 Protruding part 13 Leg 14 Notch 15 Notch 16 Hole 17 Cup 18 Contents 20 Overlapping part 22 Adhesion range 24 Sealing range 25A, 25B Notch part 31 Ultrasonic horn (ultrasonic sealing device)
32 Anvil (receiver jig, ultrasonic sealing device)
L Fold line M Fold N Recess

Claims (6)

A dripper having a bag-shaped filter in which a content having a component to be extracted is enclosed, and a tubular support formed so as to be foldable with the filter located inside.
The support is made of a bent blank plate.
The opening of the filter is detachably closed by the ultrasonic seal via the support.
An overlapping portion is formed by partially overlapping both ends of the blank plate.
A notch 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, both ends of the blank plate are adhered to form the support into a tubular shape.
The dripper is characterized in that, in the support, the sealing range by the ultrasonic seal is arranged so as to overlap the notch portion and not to overlap the overlapping portion. The dripper according to claim 1, wherein the number of the blank plates that are overlapped by bending is two over the entire sealing range. The dripper according to claim 1 or 2, wherein in the support, the sealing range by the ultrasonic seal and the bonding range at both ends of the blank plate are arranged so as not to overlap each other. When the tubular support has a first opening forming one opening and a second opening forming the other opening, and the support is changed from the folded state to the tubular open state. The dripper according to any one of claims 1 to 3, wherein an opening of the filter is attached to the first opening so that the filter opens. The 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 tubular support is formed by the adhesion.
The filter is provided in the support body,
Put the contents in the filter,
A manufacturing method characterized in that the opening of the filter is detachably closed by performing ultrasonic sealing through the support outside the range of adhesion by the adhesive. The ultrasonic sealing device is provided with 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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