JP6904468B2 - Dripper and its manufacturing method - Google Patents

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.

For a coffee dripper as described above, it is necessary to prevent regular coffee powder in the filter from being scattered 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. 4815736 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 by 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 with each other, or the outer surface of the filter is strongly sealed with respect 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 an adhesive for holding the support in a tubular shape (for example, a hot melt adhesive) is applied to the overlapping portion of the support, the filter is strongly pressed by the unstable thickness of the adhesive. Ultrasonic vibration energy acts strongly on the filter. 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 support is tubularized by being adhered with an adhesive so that both ends of the blank plate overlap.
The opening of the filter is detachably closed by the ultrasonic seal via the support.
The support is characterized in that the sealing range of the ultrasonic seal and the bonding range of the adhesive are arranged so as not to overlap each other.

The dripper of the second invention is characterized in that, in the first invention, the adhesive is a hot melt adhesive.

The dripper of the third invention is characterized in that, in the first or second invention, the adhesive range is arranged at two or three places.

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 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 above-mentioned 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.

According to the present invention, since the sealing range by the ultrasonic seal and the bonding range by the adhesive are arranged so as not to overlap, the filter is not strongly pressed by the unstable thickness of the adhesive. As a result, the ultrasonic vibration energy does not partially act strongly on the filter, so that 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 being scattered and the filter from being torn 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. The plan view which shows the blank plate of the support which constitutes the dripper of FIG. The schematic diagram which shows the ultrasonic sealing process in the dripper of FIG. The front view which shows the specific example of the positional relationship between the sealing range and the bonding range in the dripper of FIG.

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. Is preferably used. 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.

The tubular support 3 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 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. When the filter 2 is mounted in the support 3, by pressing the filter 2 through the hole 16, the relative positional deviation of the filter 2 with respect to the support 3 can be effectively suppressed.

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 combining 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. ..

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 a folded support 3 is obtained. 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 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 projecting portions 11 facing each other through the opening 8a, and two pairs of leg portions 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 protrusions 11 and the legs 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 processing 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.

A counterbore 32a is formed on the anvil 32 so as to correspond to the overlapping portion 20 of the blank plate 3A (as a relief process for one blank plate 20). Although the overlapping portion 20 of the support 3 exists in the seal range 24 (FIGS. 1 and 4 (B)), even if the support 3 is pressed against the anvil 32 by the ultrasonic horn 31 (FIG. 4 (FIG. 4 (B)). A)) In the overlapping portion 20, since one blank plate 20 enters the counterbore 32a, the filter 2 is not strongly pressed by the overlapping portion 20. As a result, the uniformity of the sealing strength can be obtained, so that the overlapping portion 20 of the blank plate 3A does not have a strong sealing portion that causes the filter 2 to be torn at the time of opening.

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, so that the adhesive is used. 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, 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 bonding range 22 with the adhesive, a strong sealing portion that triggers the filter 2 to be torn when opened does not occur, so that 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.

When using the dripper 1, 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. , Place the dripper 1 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 8, 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 edges of the cup 17 are formed from the inside and outside by the protrusion 11 located inside the cup 17 and the legs 13 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, since the sealing range 24 by the ultrasonic seal and the bonding range 22 by the adhesive are arranged so as not to overlap, the filter has an unstable thickness of the adhesive. 2 is not strongly pressed. 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.

The front view of FIG. 5 shows a specific example of the positional relationship between the sealing range 24 and the bonding range 22. FIG. 5A shows the above-mentioned specific example (FIG. 1). That is, it is a specific example (three-point hot melt type) in which the three bonding ranges 22 provided in the overlapping portion 20 of the back plate 5 are located outside the sealing range 24. (B) to (D) of FIG. 5 are specific examples (two-point hot melt type) in which the two bonding ranges 22 provided in the overlapping portion 20 of the back plate 5 are located outside the sealing range 24. Is. In each specific example, since the sealing range 24 by the ultrasonic seal and the adhesive range 22 by the adhesive are arranged so as not to overlap, the thickness of the adhesive does not affect the ultrasonic seal.

Hereinafter, the dripper and the like that carry out the present invention will be described in more detail with reference to examples.

Table 1 shows the measurement results of the thickness (mm) of the overlapping portion 20 in Examples 1 and 2 of Dripper 1 and Reference Example (current product). In the first embodiment, the position A 10 mm from the upper end of the glue margin piece 6 is the position of the ultrasonic horn 31 (seal range 24), and the position 16 mm from the upper end of the glue margin piece 6 is the position of the adhesive (adhesion range 22). The thickness (mm) of the overlapping portion 20 was measured 10 times (sample number: 1 to 10) at a position A 10 mm from the upper end of the glue margin piece 6 and a position B 17 mm from the upper end of the glue margin piece 6. In the second embodiment, the position A 10 mm from the upper end of the glue margin piece 6 is the position of the ultrasonic horn 31 (seal range 24), and the position 14 mm from the upper end of the glue margin piece 6 is the position of the adhesive (adhesion range 22). The thickness (mm) of the overlapping portion 20 was measured 10 times (sample number: 1 to 10) at a position A of 10 mm from the upper end of the glue margin piece 6 and a position B of 15 mm from the upper end of the glue margin piece 6. In the reference example, the position A 10 mm from the upper end of the glue margin piece 6 is the position of the ultrasonic horn 31 (seal range 24) and the adhesive (adhesion range 22), and the position A 10 mm from the upper end of the glue margin piece 6 is set. The thickness (mm) of the overlapping portion 20 was measured 10 times (sample number: 1 to 10).

Table 2 shows the results of filter tearing when the dripper 1 of Examples 1 and 2 and Reference Example (current product) was opened. The number of monitors was 5, and the ease of tearing was evaluated by the number of filters 2 (nonwoven fabric) that were torn when each of the two coffee drippers was opened. The way the force is applied to the filter 2 at the time of opening is the position of the sleeve overlapping portion (that is, the glue margin piece 6 is located inside or outside the back plate 5 (on the filter 2 side) in the overlapping portion 20). Since it is considered that it differs depending on the above, the sleeve overlapping portions of the two drippers 1 were opened by reversing the positions.

From the measurement results shown in Table 1, it was found that the thickness of the overlapping portion 20 can be stably obtained at the measurement position A in both Examples 1 and 2. Further, from the test results shown in Table 2, it was found that the filter 2 can be prevented from being broken in any of Examples 1 and 2.

1 Dripper 2 Filter 3 Support 3A 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 Protrusion 13 Leg 14 Notch 15 Cut Notch 16 Hole 17 Cup 18 Contents 20 Overlapping part 22 Adhesion range 24 Sealing range 31 Ultrasonic horn (ultrasonic sealing device)
32 Anvil (receiving jig, ultrasonic sealing device)
32a Counterbore L Bending line M Fold N Recess

Claims (7)

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 blank plate is composed of a front plate, a back plate, and a glue allowance piece.
The glue margin piece is continuously provided at one end of the front plate.
The back plate is continuously provided at 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 back plate.
The support is tubularized by being adhered with an adhesive so that one end of the glue margin piece overlaps the other end of the back plate.
A first bending line is provided at the boundary between the one end of the front plate and the other end of the glue margin piece.
A second bending line is provided at the boundary between the other end of the front plate and the one end of the back plate.
The first bending line is formed so as to extend so as to reach the upper end portion of the blank plate.
The opening of the filter is detachably closed by the ultrasonic seal via the support.
A dripper characterized in that, in the support, the sealing range of the ultrasonic seal and the bonding range of the adhesive are arranged so as not to overlap each other. The dripper according to claim 1, wherein the upper end portion of the other end of the glue margin piece and the upper end portion of the one end of the front plate are formed in a curved shape. The dripper according to claim 1 or 2, wherein a leg portion is formed on the lower end side of the front plate, and the leg portion is formed between the first and second bending lines. The dripper according to any one of claims 1 to 3, wherein the adhesive is a hot melt adhesive. The dripper according to any one of claims 1 to 4, wherein the adhesive range is arranged at two or three places. 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 5 , 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 6.
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.

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