TW202140346A - Extraction bag being capable of obtaining an extraction liquid by dipping the bag body into hot water - Google Patents

Abstract

An extraction bag 1A according to the present invention is provided with a bag body 3 made of a water-permeable filter sheet, a thin plate member 10 disposed on an outer surface of the bag body 3 and an extraction material M filled in the bag body 3. The bag body 3 has two opposite surfaces 3x and 3y and an upper edge 3a, and the thin plate member 10 has a holding part 11 extending on one single surface 3x of the two surfaces in a vertical direction of the bag body. An upper part of the holding part 11 is fixed to an upper part of the single surface 3x, and a lower part of the holding part 11 may be lifted rom the single surface 3x. A longitudinal folded line L1, capable of folding the lower part, in the vertical direction of the bag body is disposed on the lower part of the holding part 11, and a pair of inclined folded lines L2 extending from the side in an opposite direction of the holding part 11 to an upper end of the longitudinal folded line L1 or an extension line thereof is formed on the liftable part of the holding part 11 that is located higher than the longitudinal folded line L1. The extraction bag 1A is a tea bag capable of obtaining an extraction liquid by dipping the bag body into hot water and is capable of simply and conveniently obtaining an extraction liquid with a concentration which is high enough.

Description

Extraction bag

The invention relates to an extraction bag in which an extraction material filled in a bag body made of a water-permeable filterable sheet is immersed in hot water to obtain an extraction liquid.

In the past, in order to facilitate the preparation of beverages such as green tea, black tea, and oolong tea, tea bags in which the tea leaves are filled into a water-permeable bag body with a hanging string have been widely used. Regarding coffee, in addition to the drip-type extraction bag in which hot water is poured into coffee powder, a tea-bag type coffee extraction bag in which the body of the bag filled with coffee powder is immersed in hot water is also used. However, even if the tea bag type coffee extraction bag is to be immersed in hot water, the coffee powder contains carbon dioxide, so the body of the bag filled with coffee powder is likely to float in the hot water, and it is difficult to fully extract coffee. Therefore, it is proposed to pre-install the hook piece formed by a thin plate-shaped member on one side of the bag body filled with coffee powder, and to hook the hook piece on the bag body filled with coffee powder in the hot water. Cup rim (Patent Document 1).

In addition, it has been proposed to install a holding part that has a structure in which a bent thin plate-like member expands and contracts like a pantograph, and installs it on a bag body filled with coffee powder, and moves the holding part up and down in the hot water immersed in the bag body. This promotes the extraction of coffee (Patent Document 2). [Prior Technical Literature] [Patent Literature]

Patent Document 1: Japanese Model Patent Registration No. 3140084 Patent Document 2: Japanese Patent Laid-Open No. 2006-273379

[The problem to be solved by the invention]

However, for the previous coffee extraction bag in which the bag body filled with coffee powder is immersed in hot water, even if the hook piece or the grip formed by the thin plate-shaped member is held, the bag body to be floated is forced to sink into the hot water However, it is also difficult to sink the bag body into hot water due to the bending or deflection of the thin plate-shaped member. Even if the hook piece or the holding part is moved up and down in order to promote the extraction of coffee, the bag body does not move up and down in the hot water like the holding part. In addition, even if the bag body is temporarily submerged in hot water, only the surface layer of the whole coffee powder filled in the bag body is swelled by the hot water, and it is difficult for the hot water to penetrate into the whole coffee powder. Therefore, for a tea bag type extraction bag in which the bag body is immersed in hot water, it is difficult to obtain the same concentration of coffee liquid as the filter drop type in a time less than the same level as the filter drop type.

In contrast, the subject of the present invention is a tea bag type extraction bag that obtains an extract by immersing a bag body filled with extracting materials such as coffee powder in hot water. It moves up and down in the water, and even if the extraction bag is released by hand, it can stably maintain the state of the bag body immersed in hot water and easily obtain a sufficient concentration of extract. [Technical means to solve the problem]

The present invention contemplates that in a tea bag type extraction bag in which a thin plate-shaped member is installed on a bag body filled with extraction material, a holding part formed of a thin plate-shaped member is arranged on one side of the bag body, and the holding part is set along the up and down direction of the bag body The shape is extended, and the upper part of the holding part is fixed to the bag body, and the lower part can be pulled up from the bag body. If a specific fold line is set on the part that can be pulled up, the lower part of the holding part pulled up from the bag body is easy to fold in half The holding part is made into a rigid rod shape, which can easily make the bag body sink into hot water or move up and down in the liquid. Furthermore, when the holding part is pulled up from the bag body, the front and back sides of the upper side of the bag body are separated from each other. And a space is formed inside the bag body, so hot water can be easily injected into the bag body, and the liquid not only soaks the surface of the extraction material in the bag body, but also penetrates the inside to promote extraction. In addition, even if the hand is placed on the holding part Open, the holding part can also be supported on the inner wall of the cup to maintain the self-heated water protruding state, so that it is easy to hold the holding part and take out the extraction bag from the cup after extraction, thus completing the present invention.

That is, the present invention provides an extraction bag having a bag body formed of a water-permeable filter sheet, a thin plate-shaped member provided on the outer surface of the bag body, and an extraction material filled in the bag body; and The bag body has two opposing sides, and the upper edge of the two sides becomes the edge; The thin-plate-shaped member has a gripping portion extending along the up-down direction of the bag body on one of the above-mentioned two sides; The upper part of the holding part is fixed to the upper part of the single side, and the lower part of the holding part can be pulled up from the single side; On the lower part of the grip part, a longitudinal fold line in the up and down direction of the bag body that can fold the lower part in half is provided; A pair of oblique fold lines extending from the opposite side of the holding part to the upper end of the longitudinal fold line or its extension line is formed on the pull-up part of the holding part located further above the longitudinal fold line.

In addition, the present invention provides an extraction bag for manual filling, which is not filled with extraction material in the bag body of the extraction bag, but is provided with an opening for filling the extraction material in the bag body. [Effects of the invention]

According to the present invention, if the lower part of the holding part containing the thin plate-shaped member provided on one side of the bag body filled with the extraction material is pulled up from the bag body, and the holding part is folded along the vertical fold line of the bag body formed there, then A pair of oblique fold lines are also folded, and the pull-up part of the holding part becomes a rigid rod-shaped part including a triangular plate-shaped part extending from the upper part of the holding part attached to the bag body, and a pair of long plate-shaped parts on both sides of the longitudinal fold line . Therefore, it is easy for the bag body to sink or move up and down in the hot water.

In addition, by positioning the upper ends of the pair of diagonal fold lines at the pullable portion of the gripping portion, if the gripping portion is pulled up, the front and back sides of the upper side of the bag body are separated from each other, forming a space inside the bag body. Therefore, if the holding part is pulled up from the bag body and the bag body is immersed in hot water, the hot water will easily enter the bag body, and the hot water not only penetrates the surface of the extraction material filled into the bag body, but also easily penetrates into the bag body. internal.

Thereby, the extraction bag according to the present invention can promote the extraction and accelerate the extraction speed, and in a short period of time, it is easy to obtain an extraction solution with a concentration equal to or higher than that of the filter-drop extraction method.

In addition, even if the hand is released from the holding part, the holding part in the cup can be supported by the inner wall of the cup, and the holding part can be maintained in a protruding state from the hot water. Therefore, even if the bag body is immersed in hot water, it can be extracted temporarily after being removed from the situation. The holding part can be held again to make the bag body move up and down in the hot water, and the bag body can be easily removed after extraction. Pull up from hot water.

Hereinafter, the present invention will be specifically described with reference to the drawings. In addition, in each figure, the same number represents the same or equivalent constituent elements.

(Overall composition) Fig. 1A is a top view of an extraction bag 1A according to an embodiment of the present invention without pulling up the holding portion formed by the thin-plate-shaped member, and Fig. 1B is a rear view thereof. In FIG. 1A, the area covered with diagonal lines represents the bonding area A between the thin plate-shaped member 10 and the bag body 3, and the area covered with dots represents the surface of the bag body 3. In addition, in the present invention, the bonding area A is not limited to the aspect shown in the figure.

The extraction bag 1A has a bag body 3 formed of a water-permeable filterable sheet, a thin plate-shaped member 10 provided on the bag body 3, and an extraction material filled in the bag body 3. In the present invention, the bag body 3 has two opposing surfaces 3x and 3y and an upper side 3a that becomes the edge of the two surfaces 3x and 3y. In this embodiment, the bag body 3 is a flat bag. The thin plate-shaped member 10 is arranged on one side 3x of the two opposite sides of the bag body (FIG. 1A), but is not arranged on the opposite surface 3y (FIG. 1B).

The thin plate-shaped member 10 has a gripping portion 11 and a reinforcing portion 12 on one surface 3x of the bag body 3. The holding portion 11 has a length from the vicinity of the upper side 3a of the bag body 3 to the vicinity of the bottom side 3b. The upper portion 11x of the holding portion is fixed to the surface 3x of the bag body 3. The pull-up portion 11y is continuous.

The upper portion 11x of the grip portion is formed along the upper side 3a of the bag body 3. The upper part 11x is a wide part whose length in the width direction of the bag body is longer than that of the pull-up part 11y.

The pull-up portion 11y of the holding portion is formed in a short strip shape extending along the up-down direction of the bag body. The pull-up portion 11y is not attached to the bag body 3. Therefore, as shown in FIGS. 2, 3A, and 3B, the grip 11 can be pulled up from the bag body 3.

In addition, the holding portion 11 is provided such that its upper side 11a protrudes from the upper side 3a of the bag body 3 beyond the surface 3x of the bag body.

In addition, in the present invention, the upper side 11a of the holding portion can also be the extraction bag 1B as shown in FIG. 5, overlapping with the upper side 3a of the bag body, or the extraction bag 1C as shown in FIG. It is closer to the bottom side of the bag body.

Moreover, as shown in FIG. 1A, when the upper edge 11a of the grip portion protrudes more than the upper edge 3a of the bag body, the lower edge 11b of the bag body bottom side of the grip portion 11 is preferably formed to be stored in the surface 3x of the bag body. Thereby, as described later, it is easy to install the vertical seal when the extraction bag 1A is industrially manufactured by the filling and packaging machine.

The grip portion 11 is formed with a vertical folding line L1 in the vertical direction of the bag body that can fold the lower portion of the grip portion 11 in half. In this embodiment, the longitudinal fold line L1 can be set to fold the lower part in half such that the two sides of the lower part of the grip 11 are close to or overlap each other, from the central part of the grip 11 to the lower edge 11b of the grip 11 It is formed along the up-down direction (ie, the longitudinal direction) of the bag body. In addition, a pair of oblique fold lines L2 extending from the opposite side of the holding portion toward the upper end of the vertical fold line L1 is formed in a V-shape in the pullable portion 11y above the vertical fold line L1. The upper end of the oblique fold line L2 is located below the upper portion 11x of the holding portion fixed to the surface 3x of the bag body 3 (the bottom side of the bag body). In addition, the grip portion 11 is not formed with a fold line in the width direction of the bag body as an axis by which the grip portion 11 is pulled up. The longitudinal fold line L1 or the oblique fold line L2 can be formed by perforation, half-cutting, notching, or the like.

On the other hand, the reinforcing portion 12 has a shape extending along the vertical direction of the bag body on both sides of the pullable portion 11y of the gripping portion, and its lower end is located closer to the bottom side of the bag body than the lower end of the gripping portion 11. In addition, the reinforcing portion 12 is continuous via the upper portion 11x of the gripping portion fixed to the bag body 3 and the horizontal fold line L3. In addition, in the present invention, the reinforcing part 12 is provided as needed. In addition, the lower end of the reinforcing portion 12 may be located closer to the upper side of the bag body than the lower end of the holding portion 11.

If the lower part of the holding part 11 of the extraction bag 1A is pinched with one hand, and the holding part 11 is bent at the longitudinal fold line L1, the oblique fold line L2 is also bent, whereby the pull-up portion 11y of the holding part becomes the inclusion The triangular plate-shaped portion extending from the upper portion 11a of the gripping portion attached to the bag body, and the rigid rod-shaped long plate-shaped portion which is a pair of the two sides of the longitudinal fold line L1. Next, if the holding portion 11 is pulled up from the bag body 3 in this state, as shown in FIG. At the upper end, the front and back sides 3x and 3y are separated from each other, forming a space inside the bag body 3. Therefore, as shown in the figure, hot water can be poured into the cup 100, the grip 11 can be lowered, the bag body 3 can be immersed in the hot water W, and the hot water W can flow into the bag body 3. In addition, by moving the grip 11 up and down, the bag body 3 can easily move up and down in the hot water W, whereby the hot water W easily enters the space S in the bag body 3, and the hot water W penetrates into the extraction material. Promote the extraction of extraction materials.

According to the shape of the cup, etc., as shown in FIG. 3A, the grip 11 is pulled up and moved up and down so that the longitudinal direction of the grip 11 is approximately vertical, so that the bag body 3 sinks into the heat of the cup 100 Move up and down in water W or in hot water W and extract. If the grip 11 is pulled up substantially vertically, in this embodiment, the upper end of the bag body 3 is folded at the horizontal fold line L3 that is the upper end 11x of the grip, and the grip 11 protrudes from the surface of the bag body 3x. The upper side 11a is pressed to the back 3y of the bag body, whereby the upper side 3a of the bag body 3 is also pressed to the back 3y of the bag body, so that the folded state of the upper end is stabilized. Or, when the grip 11 is pulled up in such a way that the longitudinal direction of the grip 11 is approximately vertical, a downward force can be applied to the upper side 3a of the bag body by the weight of the extracted material in the bag body, such as As shown in FIG. 3B, the front and back surfaces 3x and 3y of the upper end of the bag body 3 are separated, and a space S is formed at the upper end. Thereby, hot water can be easily immersed into the bag body 3.

In addition, as shown in FIG. 4, the holding portion 11 can be released by hand and the extraction bag 1A can be placed in the cup 100, so that the holding portion 11 is against the inner wall of the cup 100 and supported by the inner wall. By setting the length of the bag body of the grip 11 in the vertical direction from the vicinity of the upper side 3a of the bag body 3 to the vicinity of the bottom side 3b and is sufficiently long relative to the diameter of a general cup, the inner wall of the cup 100 can support the grip 11. At this time, the holding portion 11 protrudes from the liquid surface, but the bag body 3 is maintained in a state of being immersed in hot water, so that the extraction material can be extracted. In addition, by gripping the gripping portion 11 again and moving the gripping portion 11 up and down, the bag body 3 can be moved up and down in the hot water W to promote extraction, and it is easy to lift the bag body by pulling up the gripping portion 11 3 Take out the self-heated water W.

In particular, because the shape of the bag body 3 is maintained by the reinforcing portion 12 in the extraction bag 1A, no bag body 3 collapses and the holding portion 11 is immersed in heat during the period when the extraction bag 1A is placed in the cup 100. The situation in the water. Therefore, even if the extraction bag 1A is placed in the cup 100, the grip 11 can be reliably gripped again. In addition, in the extraction bag of the present invention, since the extraction material is used in a state of being sealed in the bag body 3, the extraction material will not spread out of the bag body when the extraction bag is used.

(Extraction material) Examples of the extraction material filled into the bag body 3 include tea leaves such as coffee powder, black tea, and green tea, and Chinese medicine. Generally, if the coffee powder is to be filled into the bag body 3 and immersed in hot water, the carbon dioxide contained in the coffee powder makes the bag body easy to float and is difficult to extract. However, according to the present invention, by holding the gripping portion of the thin plate-shaped member provided on one side of the bag body, the bag body 3 is easily sinked in hot water or moved up and down in the hot water, so various extraction materials including coffee powder are included. It is suitable as an extraction material for filling the extraction bag of the present invention.

(The bag body) The shape of the bag body 3 is a flat bag in this embodiment. In the present invention, the shape of the bag body 3 is not limited to a flat bag. For example, it can also be used as a gusset bag with bracing plates at the bottom or sides. The shape of the bag body in a plan view is not limited to a rectangle, and may be a circle or the like.

The substantial top-view size of the bag body 3 can be appropriately set according to the size of the cup or container used when the extraction bag is used to obtain the extract. For example, as long as the bag body 3 is set to a size suitable for a commercially available coffee cup.

(Water filterable sheet) As the water-permeable filter sheet forming the bag body 3, various water-permeable and filterable materials can be used for the extraction of the extraction material. The structure of the water-permeable filter sheet can also be appropriately selected according to the type of extraction material. Material. For example, generally used as a water-permeable filter sheet for extracting beverages, it is known to include synthetic fibers such as polyester, nylon, polyethylene, polypropylene, vinylon, semi-synthetic fibers such as rayon, and natural materials such as mulberry and sanya. Fiber alone or woven fabric or non-woven fabric of composite fiber, mixed paper containing manila hemp, wood pulp, polypropylene fiber, etc., tea bag base paper and other papers can also be used in the present invention. From the viewpoint of the discardability of the extraction bag after use, it is preferable that the water-permeable filterable sheet contains biodegradable fibers. Examples of biodegradable fibers include polylactic acid, polybutylene succinate, and polyethylene succinate. In addition, from the viewpoint of making the water-permeable filterable sheet transparent as if the state of the extraction material in the bag body can be known, it is preferable to reduce the content of inorganic pigments or not contain inorganic pigments.

In addition, compared to the droplet type extraction bag that directly injects hot water into the extraction material, the extraction bag of the present invention must supply hot water to the extraction material through a water-passing filter sheet, so as long as no leakage of the extraction material occurs, it is better Use the mesh that is thicker than the water-permeable filter sheet used in the droplet type extraction bag. For example, in the case of using coffee powder as the extraction material, the air permeability of the water-permeable filter sheet can be set to 130～600 cm ³ /cm ² /sec (JIS L1096 air permeability A method (using Frazier air permeability tester)的方法)).

(Thin plate member) The thin-plate-shaped member 10 is preferably one having water repellency, and can be formed by perforating a thin-plate-shaped material such as cardboard or plastic sheet on which resin is laminated on the surface. From the viewpoint of the discardability of the extraction bag 1A after use, it is preferably formed of biodegradable materials such as polylactic acid, polybutylene succinate, and polyethylene succinate.

(Instructions) As the packaging and distribution form of the extraction bag 1A, it is preferable that the thin-plate-shaped member 10 is flattened on the bag body 3 as shown in FIG. 1A. Therefore, as a method of extracting the extraction material from the extraction bag 1A with the extraction bag 1A in this state as the initial state, first, as shown in FIG. 2, the grip 11 is pulled up from the bag body 3, and then as shown in FIG. 3A or FIG. 3B As shown, the gripping section 11 is pulled up so that the longitudinal direction of the gripping section 11 is approximately vertical (that is, the vertical direction of the bag body), the pouch body 3 is put into a container such as a cup 100, and hot water is poured into the gripping section 11. The bag body 3 is pressed into the hot water W so that the bag body 3 is immersed.

Or, put the extraction bag into the cup 100 filled with hot water, and also move the extraction bag 1A up and down to extract.

In addition, as shown in FIG. 4, with the bag body 3 immersed in hot water, the hand is released from the grip 11, the grip 11 is supported by the inner wall of the cup 100, and the extraction bag 1A is placed. It can be extracted during storage. In addition, the gripping portion 11 can be held again, and the gripping portion 11 can be moved up and down, whereby the bag body 3 can be moved up and down in hot water to promote extraction. The above extraction method can also be carried out in cold water.

After the extraction, the holding portion 11 can be grasped to easily take out the extraction bag 1A from the cup 100.

In this way, according to the extraction bag 1A, an extract of a desired concentration can be obtained simply and quickly.

(Production method) As a manufacturing method of the extraction bag 1A, for example, as shown in FIG. 7, the short side direction of the long-side water-permeable filter sheet 21 is prepared in the same direction as the fold line L1 of the thin-plate-shaped member 10, and the water-permeable filterability The sheet 21 is arranged and bonded to the sheet 20 for manufacturing the extraction bag of the thin plate-shaped member 10. In the picture, the area sandwiched by the two-dot chain line is used to make 1 extraction bag.

The extraction bag 1A can be continuously manufactured using this sheet 20 for extraction bag manufacturing in a packaging filling machine. In this case, first, as shown in FIG. 8, the two sides of the extraction bag manufacturing sheet 20 in the longitudinal direction are folded in half, and the sides in the longitudinal direction are welded to each other to form a longitudinal seal 22. This forms a cylindrical body 24. Then, by alternately repeating: welding the cylindrical body 24 in the short-side direction to form a horizontal seal 23, and filling the bag body 3 with the extraction material M, and the extraction bag 1A is manufactured with the side of the bag body 3 of the extraction bag 1A The extraction bag continuum connected up and down is cut into individual extraction bags to obtain extraction bag 1A. Alternatively, when forming the transverse seal 23 in the short-side direction of the cylindrical body, the fusing is also performed simultaneously, and the extraction bags 1A that are individually cut are continuously manufactured.

(Change state) The extraction bag of the present invention can have various changes. For example, in the extraction bag 1A of the top view shown in FIG. 1A, the upper portion 11x of the holding part and the reinforcing part 12 are continuous through the horizontal fold line L3. In contrast, the extraction bag 1D of the top view shown in FIG. 9 distinguishes the holding parts by a tangent line L4 11 and the reinforcement part 12. It is also possible to open a gap between the grip portion 11 and the reinforcing portion 12 at the portion of the tangent line L4. Even if the grip portion 11 and the reinforcement portion 12 are cut, as shown in FIG. 10, the grip portion 11 can be pulled up in the same manner as the above-mentioned extraction bag 1A, and an extract of a desired concentration can be easily and quickly obtained. In addition, even if the extraction bag 1D is placed in the cup during extraction, it is easy to hold the grip 11 again.

The extraction bag 1E in the plan view shown in FIG. The extraction bag 1E is shown in FIG. 12, and the holding portion 11 can be pulled up to easily and quickly obtain the extraction liquid of the desired concentration. In addition, even if the extraction bag 1E is placed in the cup during extraction as in the extraction bag 1A shown in FIG. 1A, it is easy to hold the grip 11 again.

In the top view of the extraction bag 1F shown in Figure 13, compared to the extraction bag 1E shown in Figure 11, the upper end of the pair of diagonal fold lines L2 is farther away from the upper edge 3a of the bag body, and the position of the horizontal fold line L3 is the same as the upper edge of the bag body. 3a is separated, thereby widening the space formed by the upper end of the bag body formed when the grip 11 is pulled up. In addition, in the upper portion 11x of the grip portion, the central portion in the width direction of the bag body has a depression 11d, which is not attached to the bag body 3. In this way, in the present invention, it is sufficient that the upper portion of the gripping portion is fixed to the surface 3x of the bag body. The upper portion 11x of the gripping portion is not necessarily belt-shaped, and the entire surface of the upper portion 11x of the gripping portion is not necessarily attached to the bag body 3.

The extraction bag 1G in the top view shown in FIG. 14 is derived from the extraction bag 1A shown in FIG. 1A with the reinforcement part 12 omitted. By omitting the reinforcing part 12, as shown in FIG. 15, in the state where the holding part 11 is pulled up from the bag body 3, the bag body 3 easily expands. Therefore, a space S is formed in the portion of the bag body 3 where the extraction material is filled. In particular, when the bag body 3 is immersed in hot water, even if both ends of the upper portion of the bag body 3 are bent, in order to ensure the above-mentioned space S in the bag body, in this embodiment, the upper portion 11x of the grip is opposite to The width of the upper side 3a of the bag body 3 is formed sufficiently wide, so hot water can easily flow into the bag body.

The extraction bag 1H of the top view shown in FIG. 16 is in the extraction bag 1G shown in FIG. In the extraction bag 1H, as in the extraction bag 1G shown in FIG. 15, the grip 11 can be pulled up. At this time, the surface 3x of the bag body 3 is bent near the lower end of the upper portion 11x of the holding portion fixed to the bag body, and a space S can be formed in the upper portion of the bag body (refer to FIG. 2). At this time, even if the bag body 3 is immersed in hot water, the upper ends of the bag body 3 are bent to ensure the space S. Therefore, the length of the upper portion 11x of the grip portion in the width direction of the bag body is preferably The width of the upper side 3a of the bag body 3 is more than 50%, more preferably more than 70%.

The extraction bag 1I of the top view shown in FIG. 17 has a wider width of the grip portion 11 than the extraction bag 1H shown in FIG. The upper part is U-shaped, and the part surrounded by the U-shape is attached to the surface 3x of the bag body to form the reinforcing part 12. In addition, a pair of oblique fold lines L2 extend along the extension line of the longitudinal fold line L1, and the extension line of the pair of oblique fold lines L2 and the extension line of the longitudinal fold line L1 intersect at one point, but the pair of oblique fold lines L2 and the longitudinal fold line L1 do not directly intersect.

The extraction bag 1I can pull up the holding portion 11 as shown in FIG. 18, and can easily and quickly obtain the extraction solution of the desired concentration in the same way as the aforementioned extraction bag 1A. In addition, when the extraction bag 1I is placed in the cup during extraction, it is easy to hold the grip 11 again.

The extraction bag 1J in the top view shown in FIG. 19 is the extraction bag 1I shown in FIG. 17 with the reinforcement part 12 omitted. Since the extraction bag 1J does not have the reinforcing part 12, the bag body 3 easily expands when the holding part 11 is pulled up. On the other hand, by pressing the bag body 3 with the holding part, the bag body 3 easily collapses. In particular, the upper portion 11x of the gripping portion has the same width as the pullable portion 11y of the gripping portion, and the width of the gripping portion 11 is more than 70% of the width of the upper side 3a of the bag body 3, whereby the gripping portion 11 moves the bag body toward the cup The bottom side pressing force is easily transmitted to the approximate full width of the bag body 3. Moreover, if the bag body 3 is pulled up from the bottom of the cup by pulling up the grip 11, it is formed on the part of the bag body filled with the extraction material Space S. Therefore, as shown in FIG. 20, the bag body 3 can be moved up and down in the hot water in the cup 100, and the bag body 3 can be squeezed and restored to the expanded state, so that the hot water can flow into the bag body to promote extraction.

(Extraction bag for manual filling) The above-mentioned extraction bags 1A to 1J can also be set as extraction materials for manual filling by setting the bag body 3 as an empty bag without pre-filling the extraction material into the bag body 3, and providing an opening for filling the extraction material in the bag body 3. bag. According to the extraction bag for manual filling, users of each extraction bag can fill the empty bag with extraction material according to their preferences to obtain the extraction liquid.

Preferably, the opening of the extraction bag for manual filling is provided in advance with a mechanism for closing the opening after filling with the extraction material. For example, as an empty bag for manual filling corresponding to the aforementioned extraction bag 1J, as shown in the extraction bag 30 for manual filling as shown in FIG. The water-permeable filter sheet on the surface 3y is folded on the surface 3y. At this time, the folded portion 5 is arranged on the bag body 3 in such a manner that the bottom edge 3b of the bag body is folded, and on the bottom edge The opening 6 is formed at the position 3b. The user of the extraction bag can manually fill the opening 6 of the bag body 3, which becomes an empty bag, with the extraction material M, and then turn the front and back sides of the folded portion 5 over, thereby closing the opening 6 as shown in FIG. 22.

As the mechanism for closing the opening 6 of the empty bag, it is not limited to the folding portion 5 provided under the bag body 3. For example, the zipper described in Japanese Patent No. 4289363 can be installed in the opening 6, and food can be used. Double-sided tape for packaging.

Although various aspects of the present invention have been described above, the changes in the various aspects of the present invention can be appropriately combined.

1A: Extraction bag 1B: Extraction bag 1C: Extraction bag 1D: Extraction bag 1E: Extraction bag 1F: Extraction bag 1G: Extraction bag 1H: Extraction bag 1I: Extraction bag 1J: Extraction bag 3: The bag body 3a: top 3b: Bottom 3x: single side 3y: single side 5: Folding part 6: Opening 10: Thin plate member 11: Control Department 11a: The upper side of the grip 11b: Under the control 11d: Concavity in the grip 11x: The holding part is fixed to the upper part of the single side of the bag body 11y: The pull-up part of the grip 12: Reinforcement Department 20: Sheets for making extraction bags 21: Water filterable sheet 22: Longitudinal seal 23: Horizontal seal 24: cylindrical body 30: Extraction bag for manual filling 100: cup A: Fitting area L1: Vertical broken line L2: Diagonal line L3: Horizontal broken line L4: Tangent M: extraction material S: Space W: Liquid

Fig. 1A is a top view of the extraction bag 1A of the embodiment. Fig. 1B is a rear view of the extraction bag 1A of the embodiment. Fig. 2 is a perspective view of the extraction bag 1A of the embodiment in which the grip portion is pulled up so that the longitudinal direction of the grip portion is substantially horizontal. FIG. 3A is a perspective view of the extraction bag 1A of an embodiment in which the gripping portion is pulled up with the longitudinal direction of the gripping portion being substantially vertical. FIG. 3B is a perspective view of the extraction bag 1A of the embodiment in which the gripping portion is pulled up in a manner that the longitudinal direction of the gripping portion is substantially vertical. Fig. 4 is a perspective view of the extraction bag 1A of the embodiment placed in the cup during extraction. Fig. 5 is a top view of the extraction bag 1B of the embodiment. Fig. 6 is a top view of the extraction bag 1C of the embodiment. Fig. 7 is a plan view of the sheet for manufacturing the extraction bag. Figure 8 is an explanatory diagram of the manufacturing method of the extraction bag. Fig. 9 is a top view of the extraction bag 1D of the embodiment. Fig. 10 is a perspective view of the extraction bag 1D of the embodiment in which the gripping portion is pulled up so that the longitudinal direction of the gripping portion is substantially horizontal. Fig. 11 is a top view of the extraction bag 1E of the embodiment. Fig. 12 is a perspective view of the extraction bag 1E of the embodiment in which the grip portion is pulled up so that the longitudinal direction of the grip portion is substantially horizontal. Fig. 13 is a top view of the extraction bag 1F of the embodiment. Fig. 14 is a top view of the extraction bag 1G of the embodiment. Fig. 15 is a perspective view of the extraction bag 1G of the embodiment in which the grip portion is pulled up so that the longitudinal direction of the grip portion is substantially vertical. Fig. 16 is a top view of the extraction bag 1H of the embodiment. FIG. 17 is a top view of the extraction bag 1I of the embodiment. FIG. 18 is a perspective view of the extraction bag 1I of the embodiment in which the grip portion is pulled up so that the longitudinal direction of the grip portion is substantially horizontal. Figure 19 is a top view of the extraction bag 1J of the embodiment. Fig. 20 is a perspective view of the extraction bag 1J of the embodiment of the holding part being pulled up so that the longitudinal direction of the holding part is approximately vertical, and the holding part is moved up and down. Fig. 21 is a perspective view of the extraction bag 30 for manual filling according to the embodiment. Fig. 22 is a perspective view of a state in which the opening of the manual filling extraction bag 30 of the embodiment is closed.

1A: Extraction bag

3: The bag body

3x: single side

3y: single side

11: Control Department

100: cup

S: Space

W: Liquid

Claims (11)

An extraction bag, which has a bag body formed of a water-permeable filter sheet, a thin plate-shaped member arranged on the outer surface of the bag body, and an extraction material filled in the bag body; and The bag body has two opposing sides, and the upper edge of the two sides becomes the edge; The thin-plate-shaped member has a gripping portion extending along the up-down direction of the bag body on one of the above-mentioned two sides; The upper part of the holding part is fixed to the upper part of the single side, and the lower part of the holding part can be pulled up from the single side; On the lower part of the grip part, a longitudinal fold line in the up and down direction of the bag body that can fold the lower part in half is provided; A pair of oblique fold lines extending from the opposite side of the holding part to the upper end of the longitudinal fold line or its extension line is formed on the pull-up part of the holding part located further above the longitudinal fold line. Such as the extraction bag of claim 1, wherein the upper end of the oblique fold line is located below the upper edge of the bag body. For example, the extraction bag of claim 1 or 2, wherein a fold line in the width direction of the bag body as the axis of pulling is not formed in the grip portion. Such as the extraction bag of claim 1 or 2, wherein the grip portion extends from the vicinity of the upper edge of the single side to the vicinity of the bottom edge. Such as the extraction bag of claim 1 or 2, in which the part along the upper side of the grip part is attached to the single side. Such as the extraction bag of claim 1 or 2, wherein the holding portion has a wide portion along the upper side of the single side. Such as the extraction bag of claim 1 or 2, wherein the upper edge of the grip portion protrudes from the upper edge of the bag body to the outside of the single side. For example, the extraction bag of claim 1 or 2, wherein the pull-up part of the holding part is a short strip, and the thin plate-shaped member has reinforcing parts extending in the up and down direction of the bag body on both sides of the pull-up part of the holding part. The part is attached to the bag body. Such as the extraction bag of claim 1 or 2, wherein the thin plate-shaped member has a reinforcing part formed on the outer periphery of the holding part, and the reinforcing part is attached to the bag body. For example, the extraction bag of claim 1 or 2, wherein the pull-up part of the holding part is U-shaped, the thin plate-shaped member has a reinforcing part in the part surrounded by the U-shaped holding part, and the reinforcing part is attached to the bag body. An extraction bag for manual filling, which is not filled with extraction material in the bag body of the extraction bag according to any one of claims 1 to 10, but is provided with an opening for filling the extraction material in the bag body.

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