JP7140228B2 - 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 components to be extracted (eg, regular coffee powder, black tea leaves, green tea leaves, etc.) are stored in advance and its manufacturing method. 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.

A coffee dripper as described above requires good transportability. For example, in the drippers described in Patent Documents 1 and 2, a part of the opening edge of the filter is folded back and attached to the outer surface of the upper end of the support with a hot-melt adhesive. It is possible to open the filter with However, since the support and the filter are adhered at two points on the upper end of the support, the filter may move during transportation and come off or break. In order to avoid them, in the dripper described in Patent Document 1, the shape of the upper end portion of the support body is designed to suppress the movement of the filter. Further, the dripper described in Patent Document 2 is configured to suppress movement of the filter during transportation by bonding the support and the filter at their central portions.

Good opening aptitude is also required for such coffee drippers. For example, when the filter is opened, it is necessary to prevent the regular coffee grounds in the filter from scattering and the filter from breaking. In the drippers described in Patent Documents 1 and 2, no consideration is given to prevent the contents from scattering, etc., but as described in Patent Document 3, if ultrasonic sealing is performed via the support, It is possible to releasably close the opening of the filter with a stable seal strength. Moreover, the filter can be temporarily adhered to the support at the same time by the ultrasonic sealing.

JP 2008-245894 A Japanese Unexamined Patent Application Publication No. 2004-24763 JP-A-2004-711

The drippers described in Patent Documents 1 and 2 cannot be said to have sufficient stability of the filter during transportation, and the opening aptitude when opening the filter cannot be said to be good. On the other hand, in the dripper described in Patent Document 3, since the support is made of ivory paper or water-resistant card paper, if the seal strength of the filter opening is to be appropriate, the movement of the filter during transportation should not be affected by the support. It becomes difficult to suppress it with temporary adhesion. Therefore, it is difficult to obtain good transportability, and there is a possibility that the filter may move during transport and come off or break. Conversely, if the time for ultrasonic sealing is lengthened to increase the temporary adhesion strength of the filter to the support, the sealing strength of the filter opening becomes so strong that peeling is impossible. Therefore, it becomes difficult to obtain good opening aptitude, and when the filter is opened, the contents are likely to scatter or the filter is likely to break.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a filter having good transportation aptitude in terms of attachment of a filter to a support and good opening aptitude in terms of sealing strength of the filter opening. and a manufacturing method thereof.

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,
Both ends of the blank plate are adhered with an adhesive so that the support is cylindrical,
The opening of the filter is releasably closed by ultrasonic sealing from the outer surface of the support, and the inner surface of the support and the outer surface of the filter are releasably adhered,
The peelable adhesion state between the inner surface of the support and the outer surface of the filter is present only on one side bordering on the crease when the support is in the folded state.

A dripper according to a second aspect of the invention is characterized in that, in the first aspect of the invention, one side bordering on the crease is a side on which ultrasonic vibration energy strongly acts on the support and the filter.

A dripper according to a third aspect of the present invention is characterized in that, in the first or second aspect, one side bordering on the crease is a side on which an overlapped portion formed by overlapping both ends of the blank plate is located. do.

A dripper according to a fourth aspect of the present invention is the dripper according to any one of the first to third aspects of the present invention, wherein a seal range that releasably closes the opening of the filter and a temporary adhesive that releasably adheres the filter and the support. It is characterized in that the range and are matched.

A dripper according to a fifth aspect of the invention is characterized in that, in any one of the first to fourth aspects of the invention, the support has a polyethylene layer on its inner surface.

A manufacturing method of a sixth invention is a manufacturing method of the dripper according to any one of the first to fifth 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;
By performing ultrasonic sealing from the outer surface of the support, the opening of the filter is releasably closed, and the inner surface of the support and the outer surface of the filter are releasably adhered. .

According to the present invention, the releasable adhesion between the inner surface of the support and the outer surface of the filter exists only on one side bounded by the crease when the support is in the folded state, so that it can be closed. less load on the filter opening Due to the stable adhesive state, the support suppresses the movement of the filter during transportation, etc., so that it is possible to prevent the filter from coming off or tearing due to the movement of the filter. In addition, since the opening of the filter is releasably closed by ultrasonic sealing from the outer surface of the support, the stabilization of the sealing strength prevents the contents from scattering and the filter from breaking when the filter is opened. can be done. Therefore, it is possible to realize a dripper that has good transport suitability with respect to the attachment of the filter to the support and good opening suitability with respect to the sealing strength of the filter opening.

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 blank plate of a support that constitutes the dripper of FIG. 1; FIG. 2 is a schematic diagram showing ultrasonic sealing processing in the dripper of FIG. 1; FIG. 2 is a front view showing a specific example of the positional relationship between the seal range and the adhesion range in the dripper of FIG. 1; FIG. 2 is a cross-sectional view of a main part schematically showing specific examples of two types of supports having different laminated structures. FIG. 4 is a cross-sectional view schematically showing a dripper in which a filter is temporarily adhered to one side of a support; FIG. 4 is a plan view showing the arrangement of cut portions and non-cut portions that form bending lines of a blank plate; FIG. 10 is a front view showing a dripper in which a substantially S-shaped outline appears in an upright state;

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-like 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 by gusset folding, superimposing 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 and adhering 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 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 support 3 preferably has a polyethylene layer on its inner surface, more preferably polyethylene layers on its inner and outer surfaces. When placing a polyethylene layer on the inner surface of the support 3, the blank plate 3A is required to have a polyethylene layer on at least one side. Therefore, for the blank plate 3A, it is preferable to use a sheet material in which at least one side of thick paper (waterproof cardboard, ivory paper, etc.) is coated with polyethylene, and more preferably a sheet material in which polyethylene is coated on both sides of the thick paper. preferable.

FIG. 6 schematically shows specific examples of two types of supports 3 having different laminated structures. FIG. 6A shows a cross-sectional structure of a main part of the support 3 made of a double-sided coated type blank plate 3A, and FIG. 1 shows a partial cross-sectional structure. The support 3 shown in FIG. 6A has three layers: a paper layer P0, a polyethylene layer P1 formed on the inner surface of the paper layer P0, and a polyethylene layer P2 formed on the outer surface of the paper layer P0. It has a laminated structure consisting of The support 3 shown in FIG. 6B has a laminated structure consisting of two layers, a paper layer P0 and a polyethylene layer P1 formed on the inner surface of the paper layer P0.

6(A) and (B) both have the polyethylene layer P1 on at least the inner surface, so that the inner surface of the support 3 is ultrasonically sealed from the outer surface of the support 3. and the outer surface of the filter 2 can be releasably adhered in a short time. That is, the polyethylene layer P1 functions as an adhesive layer. Due to the adhered state of the polyethylene layer P1, the movement of the filter 2 during transportation or the like is suppressed by the support 3, so that it is possible to prevent the filter 2 from coming off or being torn due to movement. Furthermore, even if the support 3 is exposed to steam, hot water, coffee, etc., the water resistance of the polyethylene layer P1 can prevent the rigidity of the support 3 from lowering.

Further, since the support 3 shown in FIG. 6(A) also has the polyethylene layer P2 on the outer surface, the decrease in rigidity of the support 3 can be more effectively prevented by the water resistance of the polyethylene layer P2. can be done.

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. FIG. 8 shows an example of a folding line L made up of perforated lines (perforations). The bending line L is composed of a plurality of cut portions C1 to C5 and a plurality of uncut portions U1 to U6, and is vertically symmetrical as a whole. The cutting portions C1 to C5 are configured with cutting edges of the same size. The non-cut portions U1 and U6 are configured to have the same size, and the non-cut portions U2 to U5 are configured to have the same size. The non-cut portions U1 and U6 are longer than the non-cut portions U2 to U5, and the relatively longer non-cut portion U1 among the non-cut portions U1 to U6 is the opening 9a of the filter 2 than the cut portions C1 to C5. (FIG. 2) (that is, the opening 7a side of the first opening 7). A seal area 24 (FIG. 1) that releasably closes the opening 9a of the filter 2 is positioned within the non-cut portion U1 and is positioned so as not to overlap any of the cut portions C1 to C5.

In the front plate 4 and the rear plate 5 (FIG. 3), a T-shaped notch 14, a V-shaped notch 15, a fan-shaped hole 16, and a concave portion N are symmetrically provided. there is 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 . 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. .

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. 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 a part of the filter opening 9 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, hot-melt adhesive) (two points at the upper end of the support 3).

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 creases M are pressed toward each other with respect to the support 3 (FIG. 1) in the folded state, the flat cylindrical portion stands up in a substantially rectangular parallelepiped shape. FIG. 9 shows the dripper 1 standing up as seen from the front plate 4 side. When the support body 3 is erected in a substantially rectangular parallelepiped shape, the force concentrates on the lower end of the notch 15 and the upper and lower ends of the hole 16 at the corners extending in the vertical direction. A substantially S-shaped outer shell G (indicated by a dashed line a little away from the outer shell position) along the . That is, in the dripper 1 in the upright state, the oblique outline portion 15a of the notch 15 on the center side of the front plate 4 is formed outward in a substantially straight line connecting the lower end of the notch 15 to the upper end of the fan-shaped hole 16. When the crease 19 and the arcuate outline portion 16a connecting the upper end to the lower end of the fan-shaped hole 16 are viewed from the front side, a substantially S-shaped outline G can be recognized.

By forming the substantially S-shaped outer shell G as described above, the blank plate 3A can be easily bent. By this folding, substantially hexagonal openings 7a and 8a are formed at the first opening 7 and the second opening 8 of the support 3 so as to form diagonals at the positions of the respective folds M (FIGS. 1 and 2). is 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. Since the shape of the dripper 1 is stabilized in this manner, the dripper 1 can be placed on the cup 17 in a stable state. 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 through the opening 9a, and the opening 9a 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) in the pre-opening state is obtained. The adhesion that releasably closes the opening 9a of the filter 2 in this manner is a temporary adhesion until the filter 2 is unsealed when the dripper 1 is used.

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. The ultrasonic seal includes an ultrasonic horn (seal bar) 31 that applies ultrasonic vibration energy to the filter 2 and an anvil (receiving jig) 32 that positions the filter 2. performed using equipment.

For example, using an ultrasonic horn 31 or anvil 32 having fine protrusions formed in a zigzag pattern on the surface, filling and sealing is performed so that the fine protrusions are in contact with the back side of the support 3 (the side where the overlapping portion 20 is located). It is preferable to By doing so, the ultrasonic sealing process can be performed without damaging the front plate 4 side of the support 3 (face side of the package). Since no trace of the ultrasonic seal remains on the front plate 4, the front plate 4 can be kept in a beautiful state, and compatibility between the appearance and stable production of the dripper 1 and usability for consumers can be achieved.

A counterbore 32a is formed in the anvil 32 so as to correspond to the overlapping portion 20 of the blank plate 3A (as relief processing for one blank plate 3A). Although the overlapping portion 20 of the support 3 exists within the seal area 24 (FIGS. 1 and 4B), even if the support 3 is pressed against the anvil 32 by the ultrasonic horn 31 (FIG. 4 ( A)) At the overlapped portion 20, one sheet of the blank plate 3A enters the counterbore 32a, so the filter 2 is not strongly pressed at the overlapped portion 20. As shown in FIG. As a result, the uniformity of the sealing strength can be obtained, so that the overlapped portion 20 of the blank plate 3A does not have a strong sealed portion that could cause the filter 2 to break when the filter 2 is unsealed.

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. The outer surface of the filter 2 is not strongly sealed against the surface (polyethylene layer P1). 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.

If the seal of the filter 2 to the support 3 has a suitable strength, the seal can be used for stabilization of the filter 2 . In other words, ultrasonic sealing enables the support 3 to stably hold the filter 2 of the dripper 1 before use. For example, if the state of the inner surface of the support 3 is adjusted by coating, the treatment time for ultrasonic sealing is adjusted, or the adhesion range is adjusted, the filter 2 can be attached to the support 3 with an appropriate strength. can be sealed.

When the support 3 shown in FIG. 6(A) is used, since the polyethylene layer P1 is formed on the inner surface thereof, by performing ultrasonic sealing through the support 3 (FIG. 4), the support The inner surface of 3 and the outer surface of filter 2 can be releasably adhered in a short time. That is, by performing ultrasonic sealing from the outer surface of the support 3, the opening 9a of the filter 2 is releasably closed (filling and sealing step), and the inner surface of the support 3 and the outer surface of the filter 2 can be separated. can be glued to Since two bonding operations can be performed simultaneously in one process, high production efficiency can be achieved. When the dripper 1 is used, the support 3 must be in a cylindrical open state, so the filter 2 is separated from the support 3 . Therefore, the peelable adhesion is a temporary adhesion for suppressing the movement of the filter 2 during transportation or the like by the support 3 and preventing troubles caused by it.

If the ultrasonic sealing process takes a long time, the adhesive force that closes the opening 9a of the filter 2 will become stronger, and the possibility that the contents 18 will scatter or the filter 2 will break when the filter is unsealed will increase. In addition, there is a possibility that traces of the counterbore 32a of the anvil 32, etc., may be left on the front plate 4 of the support 3, degrading the appearance. If the ultrasonic sealing treatment time is short, the adhesive force between the inner surface of the support 3 and the outer surface of the filter 2 is weakened, and the filter 2 tends to move during transportation, etc., and the filter 2 may come off or break. more likely.

Since the adhesion between the filter 2 and the polyethylene layer P1 is completed in a shorter time than the adhesion between the filter 2 and the paper layer P0 with an adequate adhesion strength, the adhesion force closing the opening 9a of the filter 2 is It does not become too strong and the adhesion between the inner surface of the support 3 and the outer surface of the filter 2 does not weaken. Therefore, it is possible to prevent the filter 2 from being detached or torn due to movement of the filter, and to prevent the contents 18 from scattering or the filter 2 from being torn when the filter is opened. In other words, the adhesive force for releasably closing the opening 9a of the filter 2 and the adhesive force for releasably adhering the inner surface of the support 3 and the outer surface of the filter 2 are balanced, It is possible to achieve both transport suitability and opening suitability.

FIG. 7 schematically shows the dripper 1 with the filter 2 temporarily adhered to one side of the support 3 . One inner surface of the support 3 and the outer surface of the filter 2 are temporarily adhered, but the other inner surface of the support 3 and the outer surface of the filter 2 are not adhered. When ultrasonic sealing is performed from the outer surface of the support 3, the peelable adhesion between the inner surface of the support 3 and the outer surface of the filter 2 is bounded by the crease M when the support 3 is in the folded state. This tends to occur only on one side (the side where the ultrasonic vibration energy strongly acts on the support 3 and the filter 2). When ultrasonic sealing is performed as shown in FIG. 4, as shown in FIG. Among them, the overlapped portion 20 of the blank plate 3A is more likely to occur.

In the state where the filter 2 is temporarily adhered to one side of the support 3 as described above, the adhesion points of the filter opening 9 to the first opening 7 of the support 3 (two points at the upper end of the support 3) and other In addition, adhesive points for temporary adhesion between the inner surface of the support 3 and the outer surface of the filter 2 are added, and the filter 2 is held on the support 3 at three points. Due to the adhesion state, the movement of the filter 2 during transportation can be effectively suppressed by the support 3 (improvement of transportation suitability), and the dripper 1 can be unsealed even though the production efficiency is greatly improved. Work becomes easier (improved opening aptitude).

When the filter 2 is temporarily adhered to one side of the support 3, it becomes easy to judge whether an excessively biased force is applied to the seal area 24 of the filter 2 (that is, judgment of a good product at the time of production). The filter 2 may be partially temporarily adhered to the other side of the support 3 (holding state at four points). tend to be too strong. For example, when ultrasonic sealing is performed in an excessively biased state, a completely non-bonded state is not achieved, and temporary bonding occurs especially in the overlapping portion 20, and if the bias becomes even more excessive, temporary bonding is also performed in areas other than the overlapping portion 20. occurs. As a result, it becomes difficult to improve the opening suitability of the filter 2 .

When the filter 2 is temporarily attached to one side of the support 3, the load on the closed filter opening 9 is less than when the filter 2 is temporarily attached to both sides of the support 3. For example, even if the support 3 in the folded state receives an impact at the position of the folding line M (that is, an impact that presses the left and right folding lines M in a direction toward each other) during transportation or the like (for example, during transportation of goods), the filter 2 is temporarily adhered to one side of the support 3, the impact is absorbed by the gap between the filter 2 and the support 3 in a non-bonded state. As a result, the temporary adhesion closing the opening 9a is less likely to be affected, making it possible to prevent the filter 2 from being opened before the dripper 1 is used. Also, if the filter 2 is temporarily adhered to only one side of the support 3 by adjusting the processing time of the ultrasonic sealing, traces of the counterbore 32a of the anvil 32 (damage caused at the corner of the counterbore 32a) are left. It is possible to prevent the front plate 4 of the support 3 from deteriorating in appearance. Therefore, it is preferable that the inner surface of the support 3 and the outer surface of the filter 2 are releasably adhered only on one side of the fold line M when the support 3 is in the folded state.

As shown in FIG. 7, the seal area 24 that releasably closes the opening 9a (FIG. 2) of the filter 2 and the temporary adhesion area 26 that releasably adheres the filter 2 and the support 3 match. . For this reason, the peelable adhesion between the filter 2 and the support 3 takes place within the sealing area 24 which peelably closes the opening 9a of the filter 2 . Since the temporary adhesion area 26 is located away from the contents 18 and there is no need to use an adhesive (such as a hot-melt adhesive) for temporary adhesion, there is no need to worry about sanitary problems. There is no possibility that the taste, flavor, etc. of the coffee will be affected. In addition, there is also the advantage that the number of processes when filling coffee is not increased.

As shown in FIG. 7, the inner surface of the support 3 is ultrasonically sealed from the outer surface of the support 3 at the folding line M (that is, the temporary bonding area 28) when the support 3 is in the folded state. They are releasably adhered to each other. Since the support 3 is smaller than the filter 2 with a margin, when ultrasonic sealing is performed from the outer surface of the support 3 (sealing area 24), the position of the left and right folding lines M of the support 3 The inner surfaces of the support 3 can be releasably adhered to each other in the area up to the filter 2 (temporary adhesion area 28).

When the inner surfaces of the support 3 are temporarily bonded to each other in the temporary bonding area 28, the load applied to the closed opening 9a of the filter 2 is smaller than when there is no temporary bonding in the temporary bonding area 28. For example, even if the support 3 in the folded state receives an impact at the position of the fold line M (that is, an impact that presses the left and right fold lines M in a direction toward each other) during transportation or the like, Since the surfaces are temporarily bonded together, the temporary bonding closing the opening 9a of the filter 2 is less likely to be affected. Therefore, it is possible to prevent the filter 2 from being opened before the dripper 1 is used.

If the blank plate 3A (Fig. 3) is coated with polyethylene layers P1 and P2 (Fig. 6), it becomes difficult to bend. In order to facilitate the bending, as shown in FIG. 8, it is preferable that the bending line L is composed of cut portions C1 to C5 and non-cut portions U1 to U6. By using the bending lines L formed by such perforations, the support 3 can be easily bent, so that the dripper 1 can be easily opened. In addition, since the cut portions C1 to C5 and the uncut portions U1 to U6 are formed vertically symmetrically as a whole, the support 3 can be bent more easily. Therefore, it becomes possible to open the dripper 1 more easily.

A fold line M is formed at the fold line L so that the seal area 24 (FIG. 1) intersects the fold line L. As shown in FIG. When the sealing area 24 intersects the bending line L at any of the cuts C1 to C5, the support 3 is pressed by the ultrasonic horn (seal bar) 31, and the strength of the support 3 increases at the cuts C1 to C5. It becomes weak and easily broken. In order to avoid this, as shown in FIG. 8, the seal area 24 is positioned within the non-cut portion U1 and is positioned so as not to overlap any of the cut portions C1 to C5. The crease M of the support 3 has the role of relieving the bending stress at the cut portions C1 to C5. It is possible to bend it to a stable fixed state (FIG. 2).

The non-cut portion U1, which is located closer to the opening 9a (FIG. 2) of the filter 2 than the cut portions C1 to C5, is formed relatively long with a margin. Therefore, it is possible to effectively prevent the seal area 24 from being out of the range of the non-cut portion U1. That is, the uppermost non-cut portion U1 is formed long so that the ultrasonic horn 31 can be accommodated even if it is slightly displaced in the vertical direction. Therefore, it is possible to effectively prevent tearing of the support 3 at the bending line L due to a decrease in strength.

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 2 and accumulates in the cup 17. - 特許庁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 8 , 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 13 located outside the cup 17. Since it is pressed strongly, even a large-capacity dripper 1 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, 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 unstable thickness of the adhesive prevents the filter from overlapping. 2 is not strongly pressed. 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.

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

As described above, according to this embodiment, since the support 3 has the polyethylene layer P1 on its inner surface, ultrasonic sealing from the outer surface of the support 3 causes the inner surface of the support 3 to A state in which the outer surface of the filter 2 is releasably adhered can be stably obtained in a short time. Due to the adhered state, the movement of the filter 2 during transportation or the like is suppressed by the support 3, so that it is possible to prevent the filter 2 from coming off or being torn due to movement. In addition, since the opening 9a of the filter 2 is releasably closed by ultrasonic sealing from the outer surface of the support 3, the stabilization of the sealing strength prevents the contents 18 from scattering when the filter is opened and the filter 2 to be damaged. Breakage can be prevented. Therefore, it is possible to realize a dripper 1 that has good transportation aptitude with respect to the attachment state of the filter 2 to the support 3 and has good opening aptitude with respect to the sealing strength of the filter opening 9a.

In addition, since the peelable adhesion state between the inner surface of the support 3 and the outer surface of the filter 2 is present only on one side bordering on the fold line M when the support 3 is in the folded state, it can be closed. The load applied to the filter opening 9 which is located is reduced. Due to the stable adhesion state, the movement of the filter 2 during transportation or the like is suppressed by the support 3, so that it is possible to prevent the filter 2 from coming off or being torn due to movement. In addition, since the opening 9a of the filter 2 is releasably closed by ultrasonic sealing from the outer surface of the support 3, the stabilization of the sealing strength prevents the contents 18 from scattering when the filter is opened and the filter 2 to be damaged. Breakage can be prevented. Therefore, it is possible to realize a dripper 1 that has good transportation aptitude with respect to the attachment state of the filter 2 to the support 3 and has good opening aptitude with respect to the sealing strength of the filter opening 9a.

In this embodiment, the folding line L forming the folding line M when the support 3 is in the folded state consists of the cut portions C1 to C5 and the non-cut portions U1 to U6. can be easily bent. Since the filter can be easily folded when unsealed, it is possible to prevent the contents 18 from scattering. In addition, since folding in the filling and sealing process is facilitated, production efficiency can be improved, and sufficient adhesion between the support 3 and the filter 2 makes it possible to obtain stable sealing strength at the opening of the filter. Therefore, it is possible to realize a dripper 1 that maintains a stable shape and filter state and is easy to open and fold.

Hereinafter, the dripper and the like embodying the present invention will be described more specifically with reference to examples.

Table 1 shows evaluation results of opening suitability and appearance of the filter 2 in Examples 1 and 2 and Reference Examples 1 and 2 of the dripper 1 . The cylindrical support 3 used in Examples 1 and 2 and Reference Examples 1 and 2 consists of a blank plate 3A having the same shape, and a bag-like filter 2 is arranged inside. The support 3 of Example 1 and Reference Example 1 has polyethylene layers P1 and P2 formed on both inner and outer surfaces (PE double-sided coated paper), and the support 3 of Example 2 and Reference Example 2 is , a polyethylene layer P1 is formed only on one side of the inner surface (PE single side coated paper).

Ultrasonic sealing is performed from the outer surface of the folded support 3 (Examples 1 and 2 and Reference Examples 1 and 2) until the filter 2 and the support 3 are releasably adhered to each other. The aptitude for opening and the appearance of the front side were evaluated by five people. All of the supports 3 had good opening aptitude, but five people answered that Examples 1 and 2 had better opening aptitude than Reference Examples 1 and 2. The transport suitability was judged to be the best ⊚, and the transport suitability of Reference Examples 1 and 2 was judged to be good ◯. In Examples 1 and 2, the appearance on the front side was judged to be the best, and in Reference Examples 1 and 2, since traces of the edge of the counterbore 32a appeared, it was judged to be slightly inferior Δ.

Reference Signs List 1 dripper 2 filter 3 support 3A blank plate 4 front plate 5 rear plate 6 paste margin piece 7 first opening 8 second opening 9 filter openings 7a, 8a, 9a opening 11 projection 13 leg 14 notch 15 cut Notch 15a Contoured portion 16 Hole 16a Contoured portion 17 Cup 18 Contents 19 Crease 20 Overlapping portion 22 Bonding range 24 Sealing range 26, 28 Temporary bonding range 31 Ultrasonic horn (seal bar, ultrasonic sealing device)
32 anvil (receiving jig, ultrasonic sealing device)
32a Spot facing G Outer shell L Folding line M Crease N Recess P0 Paper layer P1, P2 Polyethylene layer

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,
Both ends of the blank plate are adhered with an adhesive so that the support is cylindrical,
The opening of the filter is releasably closed by ultrasonic sealing from the outer surface of the support, and the inner surface of the support and the outer surface of the filter are releasably adhered,
wherein the peelable adhesion between the inner surface of the support and the outer surface of the filter occurs within a seal area that peelably closes the opening of the filter;
A dripper characterized in that the inner surface of the support and the outer surface of the filter are adhered to each other in a releasable state only on one side bordering on the crease when the support is in the folded state. 2. The dripper according to claim 1, wherein one side bounded by said crease is a side on which ultrasonic vibration energy strongly acts on said support and said filter. 3. The dripper according to claim 1, wherein one side bounded by the crease is a side on which an overlapping portion formed by overlapping both ends of the blank plate is located. 4. A sealing range for detachably closing the opening of the filter and a temporary bonding range for detachably bonding the filter and the support are matched according to any one of claims 1 to 3. Dripper as described above. The dripper according to any one of claims 1 to 4, characterized in that said support has a polyethylene layer on its inner surface. A method for manufacturing a dripper according to any one of claims 1 to 5,
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;
By performing ultrasonic sealing from the outer surface of the support, the opening of the filter is releasably closed, and the inner surface of the support and the outer surface of the filter are releasably adhered. Production method.

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