JP7224609B2 - extraction bag - Google Patents

Description

TECHNICAL FIELD The present invention relates to an extraction bag for obtaining an extract by immersing an extraction material filled in a bag body made of a water-permeable filterable sheet in hot water.

2. Description of the Related Art Conventionally, in order to conveniently brew beverages such as green tea, black tea, and oolong tea, tea bags in which a water-permeable bag body with a hanging string and filled with these tea leaves have been widely used. As for coffee, in addition to a drip-type coffee extraction bag in which hot water is poured into coffee powder, a tea bag-type coffee extraction bag in which a bag body filled with coffee powder is immersed in hot water is used. However, even if a tea bag type coffee extraction bag is immersed in hot water, the coffee powder contains carbon dioxide, so the main body of the bag filled with the coffee powder tends to float in the hot water, making it difficult to extract the coffee sufficiently. . Therefore, a hook piece formed of a thin plate-like member is attached to one side of the bag body to be filled with coffee grounds, and the hook piece is attached to the rim of the cup so that the bag body filled with coffee grounds does not float in hot water. There has been proposed a device that can be hooked to the body (Patent Document 1).

In addition, by attaching a grip portion having a structure in which a thin plate-like member is bent and stretched like a pantograph to a bag body filled with coffee grounds, the grip portion is moved up and down in hot water in which the bag body is immersed. Promoting coffee extraction has been proposed (Patent Document 2).

Utility Model Registration No. 3140084 JP-A-2006-273379

However, in a conventional coffee brewing bag in which a bag body filled with coffee grounds is immersed in hot water, a hook piece or grip formed of a thin plate-like member is gripped to forcibly lift the bag body with hot water. It is difficult to submerge the bag main body in hot water because the thin plate-like member is bent or bent even if it is attempted to be submerged in the hot water. Even if the hook piece or the gripping part is moved up and down in order to facilitate coffee extraction, the bag body does not move up and down like the gripping part in hot water. Also, 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 swells with the hot water, and the hot water hardly penetrates into the inside of the whole coffee powder. For this reason, it is difficult for a teabag-type extraction bag in which the bag body is immersed in hot water to obtain a coffee liquid of the same concentration as that of the drip type in less time than that of the drip type.

In contrast, the present invention is a tea bag type extraction bag that obtains an extract by immersing a bag body filled with extraction material such as coffee grounds in hot water, wherein the bag body is submerged in hot water. , it is easy to move up and down in hot water, and even if you take your hand off the extraction bag, the bag body can be stably maintained in the hot water, and a sufficiently concentrated extract can be obtained. The object is to make it easy to obtain.

The present inventor has proposed a tea bag type extraction bag in which a thin plate-like member is attached to a bag body filled with an extraction material. The upper part of the bag is fixed, and the lower part is provided so that it can be lifted from the bag body. The inventors have conceived that the longitudinal direction of the gripping portion can be easily erected in the up-down direction of the bag body. In addition, the grip part folded in two in this way becomes a rigid rod-shaped part extending from the upper part of the bag body, and by gripping the rod-shaped grip part, the bag body can be submerged in hot water or moved up and down. A space is formed inside the bag body by folding the grip part in two, making it easier for hot water to enter the inside of the bag body. Furthermore, even if the hand is released from the gripping part, the gripping part is supported by the inner wall of the cup and can be maintained in a state of protruding from the hot water. The present invention was completed with the idea that it would be easy to take out.

That is, the present invention provides an extraction bag having a bag body formed from a water-permeable and filterable sheet, a thin plate member provided on the outer surface of the bag body, and an extraction material filled in the bag body,
The bag body has two opposing surfaces and an upper side that serves as the edge of the two surfaces,
The thin plate-shaped member has a grip portion extending in the vertical direction of the bag body on one of the two surfaces,
The upper part of the grip is fixed to the upper part of the one side, and the lower part of the grip can be raised from the one side,
To provide an extraction bag in which a fold line in the vertical direction of a bag body that allows the gripping part to be folded in two is formed from the upper end to the lower end of the gripping part at the central part in the width direction of the gripping part.

The present invention also provides a hand-packed extraction bag in which the bag body is not filled with the extraction material in the extraction bag described above, and the bag body is provided with an opening for filling the extraction material.

According to the present invention, the lower part of the grasping part made of a thin plate-like member provided on one surface of the bag body filled with the extraction material is lifted from the bag body, and the fold line formed there in the vertical direction of the bag body When folded, the grip portion can be easily folded in two from the upper end to the lower end, and the folded grip portion can be easily pulled upward and downward of the bag body. The gripping portion folded in two becomes a rigid bar-like shape fixed to the upper part of the bag body, and only the upper part of the bag body is folded in two to form a space inside the bag body. Therefore, by gripping the rod-shaped gripping portion, the bag body can be submerged in the hot water in the cup and moved up and down. In addition, since a space is formed in the bag body, when the bag body is submerged in the hot water in the cup or moved up and down in the hot water, the hot water flows easily into the bag body and the bag body is filled. The hot water permeates not only the surface of the extraction material used but also the inside. Therefore, the extraction is accelerated, the extraction speed is increased, and an extract having a concentration equal to or higher than that of the drip type extraction method can be easily obtained in a short time.

In addition, even if the hand is released from the gripping portion in the cup, the gripping portion is supported by the inner wall of the cup, and the state in which the gripping portion protrudes from the hot water can be maintained. Therefore, even if the bag body is immersed in hot water, the extraction can proceed even if the operator leaves the place once. can be easily pulled up from hot water.

FIG. 1A is a plan view of an extraction bag 1A of the example. FIG. 1B is a rear view of the extraction bag 1A of the example. FIG. 2 is a perspective view of the extraction bag 1A of the embodiment in a state in which the grip portion is raised. FIG. 3 is a perspective view of the extraction bag 1A of the embodiment in a state where the grip portion is raised and folded in two. FIG. 4 is a perspective view of a state in which the extraction bag 1A of the embodiment is being extracted with the grip portion raised and folded in two. FIG. 5 is a perspective view showing a state in which the extraction bag 1A of the embodiment is left in the cup for extraction. FIG. 6 is a plan view of the extraction bag 1B of the embodiment. FIG. 7 is a plan view of the extraction bag 1C of the embodiment. FIG. 8 is a plan view of an extraction bag manufacturing sheet. FIG. 9 is an explanatory diagram of a method of manufacturing an extraction bag. FIG. 10 is a plan view of the extraction bag 1D of the example. FIG. 11 is a perspective view showing a state in which the extraction bag 1D of the embodiment is left in the cup for extraction. FIG. 12 is a perspective view showing a state in which the extraction bag 1D of the embodiment is left in a tall type cup for extraction. FIG. 13 is a plan view of the extraction bag 1E of the example. FIG. 14 is a plan view of the extraction bag 1F of the example. FIG. 15 is a perspective view of the extraction bag 1F of the embodiment in a state where the grip portion is pulled up and folded in two. FIG. 16 is a perspective view of a state in which the extraction bag 1F of the embodiment, which is folded in two with the grip portion raised, is being extracted. FIG. 17 is a plan view of the extraction bag 1G of the example. FIG. 18 is a perspective view showing a state in which the extraction bag 1G of the embodiment is left in the cup for extraction. FIG. 19 is a plan view of the extraction bag 1H of the example. FIG. 20 is a plan view of the extraction bag 1I of the example. FIG. 21 is a plan view of the extraction bag 1J of the example. FIG. 22 is a perspective view of a state in which the extraction bag 1J of the embodiment is left in the cup for extraction. FIG. 23 is a perspective view of a manual extraction bag 30 of the embodiment. FIG. 24 is a perspective view of the hand-filled extraction bag 30 of the embodiment with the opening portion closed. FIG. 25 is a plan view of an extraction bag 1x of a comparative example. FIG. 26 is a perspective view of the extraction bag 1x of the comparative example in a state in which the grip portion is raised. FIG. 27 is a plan view of an extraction bag 1y of a comparative example. FIG. 28 is a perspective view of the extraction bag 1y of the comparative example in a state in which the grasping portion is raised.

Hereinafter, the present invention will be specifically described with reference to the drawings. In each figure, the same reference numerals denote the same or equivalent components.

(overall structure)
FIG. 1A is a plan view of an extraction bag 1A according to an embodiment of the present invention, showing a state in which the grasping portion of the thin plate-like member is not raised, and FIG. 1B is a rear view thereof. In FIG. 1A , the area filled with oblique lines represents the bonding area A between the thin plate member 10 and the bag body 3 , and the area filled with dots represents the surface of the bag body 3 . In addition, in this invention, the sticking area|region A is not restricted to the illustrated aspect.

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

The thin plate-like member 10 has a strip-shaped grip portion 11 extending in the vertical direction of the bag body 3 on one surface 3x of the bag body 3. As shown in FIG. This thin plate-like member 10 has a length from the vicinity of the top side 3a of the bag body 3 to the vicinity of the bottom side 3b. The gripping portion 11 protrudes broadly along the upper side 3a of the bag body 3, and the gripping portion 11 and the bag body 3 are adhered to each other in a band-like region along the upper side 3a of the bag body, including the widened portion. The gripping portion 11 is fixed to the surface 3x of the bag body by the pasting area A. As shown in FIG. On the other hand, the lower portion of the grip portion 11 , more specifically, the portion closer to the bottom side of the bag body than the sticking area A is not stuck to the bag body 3 . Therefore, as shown in FIG. 2, the gripping portion 11 can be raised from the bag body 3 .

The gripping portion 11 is provided so that its upper side 11a protrudes from the upper side 3a of the bag body 3 to the outside of the surface 3x of the bag body.

In the present invention, the upper side 11a of the grip portion may overlap the upper side 3a of the bag body. Like the extraction bag 1B shown in FIG. can be located on the side. Further, in forming the portion of the gripping portion 11 along the upper side 3a of the bag main body 3 to be wide, the upper side 11a of the gripping portion is smoothed with respect to the lower side 11b of the gripping portion as in the extraction bag 1C shown in FIG. It can be wide.

Further, as shown in FIG. 1A, when the upper side 11a of the gripping portion protrudes from the upper side 3a of the bag body, the lower side 11b of the gripping portion 11 on the bottom side of the bag body fits within the surface 3x of the bag body. It is preferably formed as follows. This facilitates vertical sealing when the extraction bag 1A is industrially manufactured by using a filling and packaging machine as will be described later.

The gripping portion 11 is formed with a folding line L1 in the up-down direction of the bag body that allows the gripping portion 11 to be folded in two. The fold line L1 is formed from the upper end to the lower end of the gripping portion 11 at the central portion in the width direction of the gripping portion 11 . On the other hand, the gripping portion 11 does not have a folding line in the width direction of the bag body, which serves as an axis for pulling up the gripping portion 11 . In addition, the polygonal line L1 can be formed by perforation, half-cutting, creasing, or the like.

Therefore, by picking up the gripping portion 11 with one hand and raising the gripping portion 11 while bending the gripping portion 11 along the fold line L1, the entire gripping portion 11 can be easily folded in half with one hand. By folding in two, the grip portion 11 has a rigid bar shape from the top end to the bottom end, and as shown in FIG. At this time, the upper end of the bag main body 3 is folded at the edge Aa on the bag main body bottom side of the pasting area A in the plan view 1A to form a fold, and the upper edge of the grip portion 11 protruding from the surface 3x of the bag main body is folded. By pressing 11a against the back surface 3y of the bag body, the top edge 3a of the bag body 3 is also pressed against the back surface 3y of the bag body, stabilizing the folded state of the top end. Also, the folded portion of the bag body 3 is folded in two together with the grip portion 11 . As a result, a space S is formed in the bag body 3 above the portion filled with the extraction material. Therefore, as shown in FIG. 4, the bag body 3 is put into the cup 100, hot water is poured into the cup 100, the bag body 3 is immersed in the hot water W by the grip part 11, and the hot water W flows into the bag body 3. can be made In addition, by moving the grip part 11 up and down, the bag body 3 can be easily moved up and down in the hot water W, which makes it easier for the hot water W to enter the space S in the bag body 3, so that the hot water W can enter the brewing material. It penetrates and facilitates the extraction of the extraction material.

Also, as shown in FIG. 5, the hand is released from the grip portion 11 folded in two and the extraction bag 1A is left in the cup 100, and the grip portion 11 leans against the inner wall of the cup 100 and is supported by the inner wall. You may do so. By setting the length of the gripping portion 11 in the vertical direction of the bag body from the vicinity of the top side 3a to the vicinity of the bottom side 3b of the bag body 3 and making it sufficiently long with respect to the diameter of a general cup, the inner wall of the cup 100 is gripped in this way. Part 11 can be supported. In this case, the grasping portion 11 protrudes from the liquid surface, but the bag body 3 remains immersed in the hot water, so extraction of the extraction material can proceed. Further, 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. is also easy to take out from the hot water W. In addition, in the extraction bag of the present invention, the extraction material is sealed inside the bag body 3 when used, so that the extraction material does not scatter outside the bag body when the extraction bag is used.

On the other hand, as in the extraction bag 1x shown in FIG. Become. In this case, even if an attempt is made to fold the grip portion 11 in half along the fold line L1 while raising the grip portion 11, it is difficult to fold the grip portion 11 in half along the fold line L2. In addition, although the gripping part 11 can be folded along the folding line L1 after the gripping part 11 is completely folded along the folding line L2, this folding work cannot be done with one hand, and the folding work of the gripping part 11 is complicated.

As will be described later, even when the gripping portion 11 is formed in a U shape and the gripping portion 11 is formed with a folding line L2 in the width direction of the bag body as shown in FIG. is the triggering axis. When an attempt is made to fold the gripping portion 11 in two along the folding line L1 while raising the gripping portion 11, the inner ends 11c of the opposing gripping portions 11 collide with each other. Therefore, in this case as well, the paper cannot be easily folded in two.

(extraction material)
Examples of the extraction material filled in the bag body 3 include coffee powder, tea leaves such as black tea and green tea, and herbal medicines. In general, when coffee grounds are filled in the bag body 3 and immersed in hot water, the carbon dioxide contained in the coffee grounds tends to lift the bag body, making extraction difficult. However, according to the present invention, it is easy to submerge the bag body in hot water or move it up and down in hot water by gripping the gripping portion of the thin plate member provided on one surface of the bag body. Therefore, various extraction materials including ground coffee are suitable as extraction materials to be filled in the extraction bag of the present invention.

(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, and may be, for example, a gusset bag having gussets on 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 net planar dimension of the bag body 3 can be appropriately set according to the size of the cup or container used when obtaining the extract using the extraction bag. For example, the size of the bag body 3 may be adjusted to fit a commercially available coffee cup.

(Water permeable filterable sheet)
As the water-permeable and filterable sheet forming the bag body 3, various types of water-permeable and filterable sheets can be used so that they can be used for extraction of the extraction material. The constituent material of the sheet can also be selected as appropriate. For example, in general, water permeable and filterable sheets for extracting beverages are made of synthetic fibers such as polyester, nylon, polyethylene, polypropylene and vinylon, semi-synthetic fibers such as rayon, and natural fibers such as paper mulberry and mitsumata, either alone or in combination. Papers such as woven fabrics or non-woven fabrics made of fibers, mixed papers made of manila hemp, wood pulp, polypropylene fibers, etc., base paper for tea bags, etc. are known, and these can also be used in the present invention. From the point of disposal after use of the extraction bag, it is preferred that the water permeable filterable sheet contains biodegradable fibers. Examples of biodegradable fibers include polylactic acid, polybutylene succinate, polyethylene succinate, and the like. In addition, in order to give transparency to the water-permeable filter sheet so that the state of the extraction material in the bag body can be seen, the content of inorganic pigments should be reduced or inorganic pigments should not be included. is preferred.

In addition, in the drip type extraction bag, hot water is directly poured onto the extraction material. As long as powder leakage does not occur, it is preferable to use a more open mesh than the water permeable filter sheet used in the drip type extraction bag. For example, when coffee powder is used as the extraction material, the air permeability of the water permeable filter sheet is 130 to 600 cm ³ /cm ² /sec (JIS
L1096 air permeability A method (method using a Frazier air permeability tester)).

(Thin plate member)
The thin plate-like member 10 preferably has water repellency, and can be formed by punching out a thin plate-like material such as paperboard or plastic sheet laminated with a resin on the surface. From the standpoint of disposal after use of the extraction bag 1A, it is preferable to use a biodegradable material such as polylactic acid, polybutylene succinate, or polyethylene succinate.

(how to use)
As for the packaging and distribution form of the extraction bag 1A, it is preferable that the thin plate 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 starting state, first, as shown in FIG. Further, as shown in FIG. 3, the gripping portion 11 is folded in half along the folding line L1, and the gripping portion 11 is lifted so that the gripping portion 11 is substantially in the vertical direction of the bag body, and the bag body 3 is folded as shown in FIG. Hot water is poured into a container such as a cup 100, and the bag body 3 is immersed by pushing the bag body 3 into the hot water with the grip part 11.例文帳に追加

By folding the grip part 11 in two, the upper side of the bag body 3 is also folded in two, and a space is formed inside the bag body 3. It is easier to flow into Therefore, when the bag body 3 in the hot water is moved up and down by moving the grip part 11 up and down, hot water flows into the bag body 3 and is discharged from the bag body 3 repeatedly, thereby promoting extraction.

Alternatively, an extraction bag is placed in a cup 100 filled with hot water, and the extraction bag 1A is similarly moved up and down for extraction.

Alternatively, as shown in FIG. 5, when the bag body 3 is immersed in hot water, the hand may be released from the grip portion 11, the grip portion 11 may be supported by the inner wall of the cup 100, and the extraction bag 1A may be left alone. Extraction can proceed while left unattended. Alternatively, the gripping portion 11 may be gripped again and moved up and down to move the bag body 3 up and down in hot water to promote extraction.
The extraction method described above may be performed with cold water.

After the extraction, the extraction bag 1A can be easily taken out from the cup 100 by gripping the grip portion 11. FIG.

Thus, according to this extraction bag 1A, an extract having a desired concentration can be obtained simply and quickly.

(Production method)
As a method of manufacturing the extraction bag 1A, for example, as shown in FIG. A sheet 20 for manufacturing an extraction bag is prepared by arranging and adhering thin plate-like members 10 at predetermined intervals. In the figure, the area sandwiched by two-dot chain lines is used for manufacturing one extraction bag.

By using this brewing bag manufacturing sheet 20 in a packaging and filling machine, the brewing bag 1A can be continuously manufactured. In this case, first, as shown in FIG. 9, the sheet for manufacturing an extraction bag 20 is folded in two so that both sides in the longitudinal direction are overlapped, and the longitudinal sides are welded to each other to form a vertical seal 22 . to form the cylindrical body 24 . Next, by alternately repeating the formation of the lateral seal 23 that welds the cylindrical body 24 in the transverse direction and the filling of the extraction material M into the bag body 3, extraction is performed on the side of the bag body 3 of the extraction bag 1A. A series of extraction bags in which the bags 1A are connected vertically is manufactured, and is cut into individual extraction bags to obtain the extraction bags 1A. Alternatively, when forming the lateral seals 23 in the lateral direction of the cylindrical body, fusion cutting is also performed at the same time to continuously manufacture the individually separated extraction bags 1A.

(Modification mode)
The extraction bag of the present invention can have various modifications. For example, the brewing bag 1D shown in the plan view of FIG. 10 differs from the brewing bag 1A shown in the plan view of FIG. ing. More specifically, the reinforcing portion 12 is formed on the outer peripheral portion of the gripping portion 11, and the upper end of the reinforcing portion 12 is connected to the gripping portion 11 via a fold line L3 in the width direction of the bag body. is adhered to the bag body 3. The reinforcing portion 12 may be separated from the gripping portion 11 without connecting the reinforcing portion 12 to the gripping portion 11 via the broken line L3. The reinforcing portion 12 is formed by punching out a sheet of thin plate-like material, and when these are adhered to one side of the bag body 3, the reinforcing portion 12 is connected to the grip portion 11 via the folding line L3 in order to eliminate the displacement of the adhered position. is preferred.

The extraction bag 1D having the reinforcing portion 12 can reduce the crushing of the bag body 3 when the gripping portion 11 is raised and the bag body 3 is moved up and down in a cup 100 such as a cup, and the bag body 3 is filled. Space can be reserved at all times on top of the brewing material being used. Therefore, the change in the amount of hot water flowing into the bag body 3 can be reduced, and the extraction speed can be stabilized. In addition, as shown in FIG. 11, when the hand is released from the gripping portion 11 in the cup 100, the position and inclination of the gripping portion 11 supported by the inner wall of the cup with respect to the liquid surface can be stabilized. In particular, as shown in FIG. 12, when performing extraction with a tall type cup 100, even if the hand is released from the grip portion 11, the grip portion 11 does not excessively sink into the cup, and the grip portion 11 is released again. Easier to grip.

When the reinforcing portion 12 is provided on the outer peripheral portion of the grip portion 11, the reinforcing portion 12 is attached to the bag body 3 as in the extraction bag 1E shown in FIG. can be omitted. Also in this case, the upper part of the grip part 11 is fixed to the upper part of one surface 3x of the bag body 3, and the lower part of the grip part can be lifted from the surface 3x, so that the effects of the present invention can be obtained.

As with the extraction bag 1F shown in FIG. 14, the grip portion 11 may be formed in a U shape. The upper end of the U-shaped grip portion 11 is bent along the upper edge 3a of the bag body 3, and the portion along the upper edge 3a is adhered to the surface 3x of the bag body. Further, a folding line L1 for folding the gripping portion 11 in the vertical direction of the bag body is formed so as to bisect the gripping portion 11 below the U-shaped gripping portion 11 .

As shown in FIG. 15, when the grip portion 11 of the extraction bag 1F is folded in two along the vertical folding line L1 of the bag body, the length of the folding line L1 is shorter than that of the extraction bag 1A shown in FIG. The grip part 11 can be folded in two with less force than the extraction bag 1A shown in 1A.

Further, after the grip part 11 is folded in two, the extraction material in the bag body 3 can be extracted in the same manner as the extraction bag 1A shown in FIG. It is also possible to release the hand from the grasping portion 11 of the extraction bag 1F.

When forming the gripping portion 11 into a U shape, a notch 13 may be formed in the inner peripheral portion of the U-shaped gripping portion 11 as in the extraction bag 1G shown in FIG. As a result, as shown in FIG. 18, the notch 13 of the grip portion 11 folded in two can be hung on the opening wall of the cup 100 .

Further, as in an extraction bag 1H shown in FIG. 19, a reinforcing portion 12 may be formed on the outer peripheral portion of the U-shaped grip portion 11. As shown in FIG. Also in this case, it is preferable that the portion of the U-shaped gripping portion 11 along the upper side 3a of the bag body and the upper end of the reinforcing portion 2 are connected via the fold line L3.

As with the extraction bag 1I shown in FIG. 20, the grip portion 11 may be formed in an O shape (that is, annular). When the gripping portion 11 is formed in an O shape, a reinforcing portion 12 attached to the surface 3x of the bag body 3 may be provided inside the gripping portion 11, as in the extraction bag 1J shown in FIG. In this case, it is preferable to provide an opening in the thin plate-like member so that a gap 25 is formed between the upper end of the reinforcing portion 12 and the upper end of the grip portion 11 in the ring. As a result, as shown in FIG. 22, the grip portion 11 can be pulled up from the bag body and folded in two, and the shape of the bag body 3 can be prevented from being excessively crushed. On the other hand, if the gap 25 inside the O-shaped gripping portion 11 is removed and the entire inner surface of the gripping portion 11 is adhered to the surface 3x of the bag body as the reinforcing portion 12, the gripping portion 11 lifted up from the bag body 3 can be attached. It becomes impossible to fold in half along the folding line L1.

(Extraction bag for manual filling)
In each of the extraction bags 1A to 1J described above, the bag main body 3 is left empty without being filled with the extraction material, and the bag main body 3 is provided with an opening for filling the extraction material, and can also be used as a hand-packed extraction bag. good. According to the hand-filled extraction bag, each individual extraction bag user can fill the empty bag with the extraction material according to his/her preference to obtain the extraction liquid.

It is preferable to provide means for closing the opening of the hand-filled extraction bag after filling the extraction material. For example, as a manual empty bag corresponding to the extraction bag 1A described above, a thin plate-like member 10 is provided on two opposing surfaces of the bag body 3, like the manual extraction bag 30 shown in FIG. The water-permeable and filterable sheet forming the non-side surface 3y is folded back onto the surface 3y, and in this case, the folded portion 5 is provided on the bag body 3 so that the lower side 3b of the bag body becomes a crease, and the lower side 3b is provided. An opening 6 is formed at the position of . The extraction bag user manually fills the extraction material M from the opening 6 of the bag body 3, which is an empty bag, and then closes the opening 6 as shown in FIG. can be done.

The means for closing the opening 6 of the empty bag is not limited to providing the folded portion 5 at the bottom of the bag body 3. For example, a chuck described in Japanese Patent No. 4289363 may be provided at the opening 6, food packaging. You can use double-sided tape for

Various aspects of the present invention have been described above, but the modifications in the various aspects of the present invention can be combined as appropriate.

1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1I, 1J, 1x, 1y Extraction bag 3 Bag body 3a Upper side of bag body 3b Bottom side of bag body 3x Surface of bag body 3y Surface of bag body 5 Fold back Portion 6 Opening 10 Thin plate-like member 11 Gripping portion 11a Upper side 11b of gripping portion Lower side 11c of gripping portion Inner end portion 12 of gripping portion Reinforcing portion 13 Notch 20 Extraction bag manufacturing sheet 21 Water permeable and filtering sheet 22 Vertical seal 23 Horizontal seal 24 Cylindrical body 25 Gap 30 Manual extraction bag 100 Cup L1 Folded line L2 in the vertical direction of the bag body Folded line L3 in the width direction of the bag body Folded line in the width direction of the bag body Margin M Extraction material S Space W Hot water

Claims (12)

An extraction bag comprising a bag body formed from a water-permeable and filterable sheet, a thin plate member provided on the outer surface of the bag body, and an extraction material filled in the bag body,
The bag body has two opposing surfaces and an upper side that serves as the edge of the two surfaces,
The thin plate-shaped member has a strip-shaped grip portion extending in the vertical direction of the bag body on one of the two surfaces,
The upper part of the grip is fixed to the upper part of the one side, and the lower part of the grip can be raised from the one side,
A brewing bag in which a fold line in the vertical direction of the bag body is formed in the gripping portion from the upper end to the lower end of the gripping portion at the widthwise central portion of the gripping portion so that the gripping portion can be folded in two. An extraction bag comprising a bag body formed from a water-permeable and filterable sheet, a thin plate member provided on the outer surface of the bag body, and an extraction material filled in the bag body,
The bag body has two opposing surfaces and an upper side that serves as the edge of the two surfaces,
The thin plate-shaped member has a U-shaped grip portion extending in the vertical direction of the bag body on one of the two surfaces,
The upper part of the grip is fixed to the upper part of the one side, and the lower part of the grip can be raised from the one side,
A brewing bag in which a fold line in the vertical direction of the bag body is formed in the gripping portion from the upper end to the lower end of the gripping portion at the widthwise central portion of the gripping portion so that the gripping portion can be folded in two. An extraction bag comprising a bag body formed from a water-permeable and filterable sheet, a thin plate member provided on the outer surface of the bag body, and an extraction material filled in the bag body,
The bag body has two opposing surfaces and an upper side that serves as the edge of the two surfaces,
The thin plate-shaped member has an O-shaped grip portion extending in the vertical direction of the bag body on one of the two surfaces,
The upper part of the grip is fixed to the upper part of the one side, and the lower part of the grip can be raised from the one side,
A brewing bag in which a fold line in the vertical direction of the bag body is formed in the gripping portion from the upper end to the lower end of the gripping portion at the widthwise central portion of the gripping portion so that the gripping portion can be folded in two. An extraction bag comprising a bag body formed from a water-permeable and filterable sheet, a thin plate member provided on the outer surface of the bag body, and an extraction material filled in the bag body,
The bag body has two opposing surfaces and an upper side that serves as the edge of the two surfaces,
The thin plate-like member has, on one of the two surfaces, a grip portion extending in the vertical direction of the bag body and a reinforcing portion extending in the vertical direction of the bag body ,
The upper part of the grip is fixed to the upper part of the one side, and the lower part of the grip can be raised from the one side,
A brewing bag in which a fold line in the vertical direction of the bag body is formed in the gripping portion from the upper end to the lower end of the gripping portion at the widthwise central portion of the gripping portion so that the gripping portion can be folded in two. 5. The extraction bag according to any one of claims 1 to 4, wherein the grip portion does not have a folding line in the width direction of the bag body, which serves as a lifting axis. The extraction bag according to any one of claims 1 to 5, wherein the grip portion extends from the vicinity of the upper side of said one side to the vicinity of the bottom side. The extraction bag according to any one of claims 1 to 6 , wherein the portion along the upper side of the grip portion is adhered to the one side. The extraction bag according to any one of claims 1 to 7 , wherein the grip has a wide portion along the upper side of said one side. The extraction bag according to any one of claims 1 to 8 , wherein the upper side of the grip portion protrudes from the upper side of the bag body to the outside of said one side. 3. The extraction bag according to claim 1 or 2 , wherein a reinforcing portion is formed on the outer peripheral portion of the gripping portion, and the upper end of the reinforcing portion is connected to the gripping portion via a fold line in the width direction of the bag body. 4. The brewing bag of claim 3 , wherein the O-shaped gripping portion has a reinforcing portion inside. In the following extraction bag, the bag body is not filled with the extraction material, and the bag body is provided with an opening for filling the extraction material, wherein the extraction bag is a water-permeable filterable sheet and a thin plate member provided on the outer surface of the bag body,
The bag body has two opposing surfaces and an upper side that serves as the edge of the two surfaces,
The thin plate-shaped member has a grip portion extending in the vertical direction of the bag body on one of the two surfaces,
The upper part of the grip is fixed to the upper part of the one side, and the lower part of the grip can be raised from the one side,
In the gripping portion, a folding line in the vertical direction of the bag body is formed from the upper end to the lower end of the gripping portion at the center portion in the width direction of the gripping portion so that the gripping portion can be folded in two.
Extraction bag for hand filling.

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