WO2021214957A1

WO2021214957A1 - Extraction bag

Info

Publication number: WO2021214957A1
Application number: PCT/JP2020/017579
Authority: WO
Inventors: 隆司石田; 充範斎藤
Original assignee: 大紀商事株式会社
Priority date: 2020-04-23
Filing date: 2020-04-23
Publication date: 2021-10-28
Also published as: CN115379993A; JP7271038B2; JPWO2021214957A1

Abstract

An extraction bag (1A) has: a bag body (3) that is formed from a water-permeable filtering sheet; a thin board-shaped member (10) that is provided to an outer surface of the bag body (3); and an extraction material (M) with which the bag body (3) is filled. The bag body (3) has two facing surfaces (3x, 3y) and an upper edge (3a), and the thin board-shaped member (10) has a grip section (11) that extends in a bag body vertical direction on one surface (3x) among the two surfaces. An upper section of the grip section (11) is fixed to an upper section of the one surface (3x), and a lower section of the grip section (11) can be lifted up from the one surface (3x). The lower section of the grip section (11) is provided with a vertical fold line (L1) in the bag body vertical direction that allows the lower section to be folded in two. A pair of diagonal fold lines (L2) that extend from opposing side edges of the grip section (11) toward the upper end of the vertical fold line (L1) or a line of extension thereof are formed in a portion of the grip section (11) that is liftable and is above the vertical fold line (L1). This extraction bag (1A) is of a teabag type, with which an extracted liquid is obtained by submerging the bag body in hot water, and an extracted liquid of sufficient strength can easily be obtained therewith.

Description

Extraction bag

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

Conventionally, tea bags filled with these tea leaves in a water-permeable bag body with a hanging thread have been widely used in order to easily make beverages such as green tea, black tea, and oolong tea. As for coffee, in addition to a drip-type 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 you try to immerse a tea bag type coffee extraction bag in hot water, it is difficult to sufficiently extract coffee because the coffee powder contains carbon dioxide and the bag body filled with coffee powder easily floats in the hot water. .. Therefore, a hook piece formed of a thin plate-shaped member is attached to one side of a bag body filled with coffee powder, and the hook piece is attached to the edge of the cup so that the bag body filled with coffee powder does not float in hot water. It has been proposed that the coffee can be hooked (Patent Document 1).

Further, a grip portion having a structure in which a thin plate-shaped member is bent to expand and contract like a pantograph is attached to a bag body filled with coffee powder, and the grip portion is moved up and down in hot water in which the bag body is immersed. It has been proposed to promote coffee extraction (Patent Document 2).

Utility Model Registration No. 314804 Japanese Unexamined Patent Publication No. 2006-273379

However, in the conventional coffee extraction bag in which the bag body filled with coffee powder is immersed in hot water, the hook piece or the grip portion formed of the thin plate-shaped member is gripped, and the bag body to be lifted is forcibly hot water. Even if it is attempted to be submerged, it is difficult to submerge the bag body in hot water because the thin plate-shaped member is bent or bent. Even if the hook piece or the grip portion 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 in the same manner as the grip portion. Further, even if the bag body is temporarily submerged in hot water, only the surface layer of the entire coffee powder filled in the bag body is swollen with hot water, and it is difficult for the hot water to permeate the inside of the entire coffee powder. Therefore, in a tea bag type extraction bag in which the bag body is immersed in hot water, it is difficult to obtain a coffee liquid having the same strength as the drip type in less than the same time as the drip type.

On the other hand, the present invention is a tea bag type extraction bag in which an extract is obtained by immersing a bag body filled with an extraction material such as coffee powder in hot water, and the bag body is submerged in hot water. It is easy to move it up and down in hot water, and even if you take your hand off the extraction bag, the bag body can be kept stably immersed in hot water, and an extract with sufficient concentration can be obtained. The subject is to make it easy to obtain.

In a tea bag type extraction bag in which a thin plate-shaped member is attached to a bag body filled with an extraction material, the present inventor provides a grip portion formed of the thin plate-shaped member on one surface of the bag body. The grip portion has a shape extending in the vertical direction of the bag body, the upper part of the grip portion is fixed to the bag body, and the lower part can be raised from the bag body. The lower side of the grip part raised from the main body is easily folded in half and the grip part becomes a rigid rod shape, which makes it easy to submerge the bag body in hot water or move it up and down in hot water. When the grip is raised from the bag body, the front and back surfaces that form the upper side of the bag body are separated from each other to form a space inside the bag body, so that hot water can easily enter the inside of the bag body and inside the bag body. Hot water permeates not only the surface of the extraction material but also the inside to promote extraction, and even if the hand is released from the grip part, the grip part is supported by the inner wall of the cup and maintains a state of protruding from the hot water. The present invention has been completed with the idea that this makes it easy to grip the grip portion and take out the extraction bag from the cup after extraction.

That is, the present invention is an extraction bag having a bag body formed of a water-permeable filterable sheet, a thin plate-shaped 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 an 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.
A vertical polygonal line in the vertical direction of the bag body is provided at the lower part of the grip portion so that the lower part can be folded in half.
A pair of diagonal polygonal lines extending from the opposite side of the grip portion toward the upper end of the vertical polygonal line or an extension line thereof are formed in the provocative portion of the grip portion above the vertical polygonal line. Provide a bag.

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

According to the present invention, a lower portion of a grip portion made of a thin plate-shaped member provided on one surface of a bag body filled with an extraction material is raised from the bag body, and a vertical polygonal line in the vertical direction of the bag body formed therein is raised. When the grip portion is folded with, a pair of diagonal polygonal lines are also broken, and the movable portion of the grip portion is a triangular plate-shaped portion extending from the upper part of the grip portion attached to the bag body and a pair of vertical polygonal lines on both sides. It becomes a rigid rod shape consisting of a long plate-like part. Therefore, it becomes easy to submerge the bag body in hot water or move it up and down in hot water.

Further, when the upper end of the pair of diagonal polygonal lines is located at the position where the grip portion can be raised, the front and back surfaces forming the upper side of the bag body are separated from each other when the grip portion is raised, and a space is formed inside the bag body. Will be done. Therefore, when the grip portion is raised from the bag body and the bag body is immersed in hot water, the hot water easily passes through the bag body, and the hot water permeates not only the surface of the extraction material filled in the bag body but also the inside. do.

Therefore, according to the extraction bag of the present invention, the extraction is promoted and 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.

Further, even if the grip portion is released from the grip portion in the cup, the grip portion is supported by the inner wall of the cup, and the grip portion can be maintained in a state of protruding from the hot water. Therefore, the extraction can proceed even if the bag body is submerged in hot water and once separated from the place, the grip portion can be gripped again and the bag body can be moved up and down in the hot water, and after the extraction, the bag body can be moved up and down. It is also easy to pull the water out of the hot water.

FIG. 1A is a plan 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 raised so that the longitudinal direction of the grip portion is substantially horizontal. FIG. 3A is a perspective view of the extraction bag 1A of the embodiment in which the grip portion is raised so that the longitudinal direction of the grip portion is substantially vertical. FIG. 3B is a perspective view of the extraction bag 1A of the embodiment in which the grip portion is raised so that the longitudinal direction of the grip portion is substantially vertical. FIG. 4 is a perspective view of the extraction bag 1A of the embodiment left in the cup at the time of extraction. FIG. 5 is a plan view of the extraction bag 1B of the embodiment. FIG. 6 is a plan view of the extraction bag 1C of the embodiment. FIG. 7 is a plan view of the extraction bag manufacturing sheet. FIG. 8 is an explanatory diagram of a method for manufacturing an extraction bag. FIG. 9 is a plan 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 grip portion is raised so that the longitudinal direction of the grip portion is substantially horizontal. FIG. 11 is a plan 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 raised so that the longitudinal direction of the grip portion is substantially horizontal. FIG. 13 is a plan view of the extraction bag 1F of the embodiment. FIG. 14 is a plan 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 raised so that the longitudinal direction of the grip portion is substantially vertical. FIG. 16 is a plan view of the extraction bag 1H of the embodiment. FIG. 17 is a plan 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 raised so that the longitudinal direction of the grip portion is substantially horizontal. FIG. 19 is a plan view of the extraction bag 1J of the embodiment. FIG. 20 is a perspective view of the extraction bag 1J of the embodiment in which the grip portion is raised so that the longitudinal direction of the grip portion is substantially vertical, and the grip portion is moved up and down. FIG. 21 is a perspective view of the hand-packing extraction bag 30 of the embodiment. FIG. 22 is a perspective view showing a state in which the opening of the hand-packing extraction bag 30 of the embodiment is closed.

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

(overall structure)
FIG. 1A is a plan view of the extraction bag 1A according to the embodiment of the present invention in a state where the grip portion formed of the thin plate-shaped member is not raised, and FIG. 1B is a rear view thereof. In FIG. 1A, the area filled with diagonal lines represents the attachment area A between the thin plate-shaped member 10 and the bag body 3, and the area filled with dots represents the surface of the bag body 3. In the present invention, the attachment region A is not limited to the illustrated embodiment.

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

The thin plate-shaped member 10 has a grip portion 11 and a reinforcing portion 12 on one surface 3x of the bag main body 3. The grip portion 11 has a length extending from the vicinity of the upper side 3a to the vicinity of the bottom side 3b of the bag body 3, the upper portion 11x of the grip portion is fixed to the surface 3x of the bag body 3, and the lower portion is a portion 11y that can be raised from the surface 3x. The upper portion 11x and the causeable portion 11y are continuous.

The upper portion 11x of the grip portion is formed along the upper side 3a of the bag body 3. The upper portion 11x is a wide portion having a length in the width direction of the bag body longer than the causeable portion 11y, and substantially the entire width is the attachment region A with the bag body.

The raiseable portion 11y of the grip portion has a strip shape extending in the vertical direction of the bag body. This causeable portion 11y is not attached to the bag body 3. Therefore, as shown in FIGS. 2, 3A, and 3B, the grip portion 11 can be raised from the bag body 3.

Further, the grip portion 11 is provided so that its upper side 11a projects from the upper side 3a of the bag body 3 to the outside of the surface 3x of the bag body 3.

In the present invention, the upper side 11a of the grip portion may overlap with the upper side 3a of the bag body as in the extraction bag 1B shown in FIG. 5, and the upper side of the bag body may be overlapped with the extraction bag 1C shown in FIG. It may be located closer to the bottom of the bag body than 3a.

Further, as shown in FIG. 1A, when the upper side 11a of the grip portion protrudes from the upper side 3a of the bag body, the lower side 11b of the grip portion 11 on the bottom side of the bag body fits within the surface 3x of the bag body. It is preferable that it is formed in such a manner. As a result, as will be described later, when the extraction bag 1A is industrially manufactured by applying it to a filling and packaging machine, it becomes easy to perform vertical sealing.

The grip portion 11 is formed with a vertical polygonal line L1 in the vertical direction of the bag body that allows the lower portion of the grip portion 11 to be folded in half. In the present embodiment, the vertical polygonal line L1 enables the lower portion of the grip portion 11 to be folded in half so that both sides of the lower portion come close to each other or overlap each other, and the lower portion is folded in half from the central portion of the grip portion 11. The bag body is formed in the vertical direction (that is, in the vertical direction) up to the lower side 11b of the grip portion 11. Further, a pair of diagonal polygonal lines L2 extending from the opposite side of the grip portion toward the upper end of the vertical polygonal line L1 are formed in a V shape in the raiseable portion 11y above the vertical polygonal line L1. The upper end of the diagonal polygonal line L2 is below the upper portion 11x of the grip portion fixed to the surface 3x of the bag body 3 (on the bottom side of the bag body). The grip portion 11 is not formed with a polygonal line in the width direction of the bag body, which is the axis for raising the grip portion 11.
The vertical polygonal line L1 and the diagonal polygonal line L2 can be formed by perforations, half-cuts, streaks, and the like.

On the other hand, the reinforcing portion 12 has a shape extending in the vertical direction of the bag body on both sides of the raiseable portion 11y of the grip portion, and its lower end is located closer to the bottom side of the bag body than the lower end of the grip portion 11. .. Further, the reinforcing portion 12 is continuous with the upper portion 11x of the grip portion fixed to the bag main body 3 via the horizontal polygonal line L3. In the present invention, the reinforcing portion 12 is provided as needed. Further, 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 grip portion 11.

By pinching the lower part of the grip portion 11 of the extraction bag 1A with one hand, when the grip portion 11 is bent at the vertical polygonal line L1, the diagonal polygonal line L2 is also broken, so that the movable portion 11y of the grip portion is attached to the bag body. It has a rigid rod shape consisting of a triangular plate-shaped portion extending from the upper portion 11a of the grip portion and a pair of long plate-shaped portions on both sides of the vertical polygonal line L1. Then, when the grip portion 11 is raised from the bag body 3 in this state, as shown in FIG. 2, the surface 3x of the bag body is broken at the horizontal polygonal line L3 which is the lower end of the upper portion 11x of the grip portion, so that the bag body 3 At the upper end of the bag, the front and back surfaces 3x and 3y are separated from each other, and a space is formed inside the bag body 3. Therefore, as shown in the figure, hot water can be poured into the cup 100, the grip portion 11 is lowered, the bag body 3 is immersed in the hot water W, and the hot water W can flow into the bag body 3. Further, by moving the grip portion 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 and the hot water W enters the extraction material. It penetrates and the extraction of the extraction material is promoted.

As shown in FIG. 3A, the grip portion 11 is raised so that the longitudinal direction is substantially vertical according to the shape of the cup, and the bag body 3 is submerged in the hot water W in the cup 100 by moving the grip portion 11 up and down. Alternatively, it may be extracted by moving it up and down in hot water W. When the grip portion 11 is raised substantially vertically in this way, in this embodiment, the upper end of the bag body 3 is folded by the horizontal polygonal line L3 which is the lower end of the upper portion 11x of the grip portion, and the grip portion protrudes from the surface 3x of the bag body. By pressing the upper side 11a of the portion 11 against the back surface 3y of the bag body, the upper side 3a of the bag body 3 is also pressed against the back surface 3y of the bag body, and the folded state of the upper end portion is stabilized. Alternatively, when the grip portion 11 is raised so that the longitudinal direction of the grip portion 11 is substantially vertical, a downward force is applied to the upper side 3a of the bag body due to the weight of the extracted material in the bag body or the like. , As shown in FIG. 3B, the front and back surfaces 3x and 3y of the upper end portion of the bag body 3 may be separated from each other, and a space S may be formed at the upper end portion. This makes it easier for hot water to enter the bag body 3.

Further, as shown in FIG. 4, even if the extraction bag 1A is left in the cup 100 by releasing the hand from the grip portion 11, the grip portion 11 leans against the inner wall of the cup 100 and is supported by the inner wall. good. By setting the length of the grip portion 11 in the vertical direction of the bag body from the vicinity of the upper side 3a to the vicinity of the bottom side 3b of the bag body 3 and making it sufficiently longer than the diameter of a general cup, the inner wall of the cup 100 is thus formed. The grip portion 11 can be supported. In this case, although the grip portion 11 protrudes from the liquid surface, the bag body 3 is maintained in a state of being immersed in hot water, so that the extraction of the extraction material can proceed. Further, by gripping the grip portion 11 again and moving the grip portion 11 up and down, the bag body 3 can be moved up and down in hot water W to promote extraction, and by pulling up the grip portion 11, the bag body 3 can be moved up and down. Can be easily taken out from the hot water W.

In particular, in this extraction bag 1A, since the shape of the bag body 3 is held by the reinforcing portion 12, the bag body 3 is crushed while the extraction bag 1A is left in the cup 100, and the grip portion 11 is brought into the hot water accordingly. There is no need to immerse yourself deeply in. Therefore, even if the extraction bag 1A is left in the cup 100, the grip portion 11 can be reliably gripped again.
In the extraction bag of the present invention, since the extraction material is used in a state of being sealed inside the bag body 3, the extraction material is not scattered outside the bag body when the extraction bag is used.

(Extracted material)
Examples of the extraction material filled in the bag body 3 include coffee powder, black tea, tea leaves such as green tea, and Chinese herbs. Generally, when coffee powder is filled in the bag body 3 and attempted to be immersed in hot water, the bag body tends to float due to carbon dioxide contained in the coffee powder, so that it is difficult to extract. However, according to the present invention, it is easy to submerge the bag body 3 in hot water or move it up and down in hot water by gripping the grip portion of the thin plate-shaped member provided on one surface of the bag body. Therefore, various extraction materials including coffee powder 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 a gusset on the bottom or side. 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 plane size 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 bag body 3 may be sized to fit a commercially available coffee cup.

(Water filterable sheet)
As the water-permeable filterable sheet forming the bag body 3, various sheets having water permeability and filterability can be used so that they can be used for extraction of the extraction material, and the water-permeable filterability can be used depending on the type of the extraction material. The constituent material of the sheet can also be appropriately selected. For example, in general, as a water-permeable filterable sheet for extracting a beverage, synthetic fibers such as polyester, nylon, polyethylene, polypropylene and vinylon, semi-synthetic fibers such as rayon, and natural fibers such as Kozo and Mitsumata are used alone or in combination. Papers such as woven fabrics or non-woven fabrics made of fibers, rayon made of Manila hemp, wood pulp, and rayon made of polypropylene fibers, and tea bag base paper are known, and these can also be used in the present invention. From the viewpoint of disposability after use of the extraction bag, it is preferable to include biodegradable fibers in the water-permeable filterable sheet. Examples of the biodegradable fiber include polylactic acid, polybutylene succinate, polyethylene succinate and the like. In addition, from the viewpoint of making the water-permeable filterable sheet transparent so that the state of the extracted material in the bag body can be understood, the content of the inorganic pigment should be reduced or the inorganic pigment should not be contained. Is preferable.

Further, in the drip type extraction bag, hot water is poured directly into the extraction material, whereas in the extraction bag of the present invention, hot water is always supplied to the extraction material through a water-permeable filterable sheet. As long as powder leakage does not occur, it is preferable to use a coarser than the water-permeable filterable sheet used in the drip-type extraction bag. For example, when coffee powder is used as an extraction material, the air permeability of the water-permeable filter sheet is 130 to 600 cm ³ / cm ² / sec (JIS L1096 air permeability method A (method using a Frazier type air permeability tester)). be able to.

(Thin plate-shaped member)
The thin plate-shaped member 10 preferably has water repellency, and can be formed by punching a thin plate-shaped material such as a paperboard or a plastic sheet in which a resin is laminated on the surface. From the viewpoint of disposability after using the extraction bag 1A, those formed from biodegradable materials such as polylactic acid, polybutylene succinate, and polyethylene succinate are preferable.

(how to use)
As the packaging and distribution form of the extraction bag 1A, as shown in FIG. 1A, it is preferable that the thin plate-shaped member 10 is flattened on the bag body 3. 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. 2, the grip portion 11 is raised from the bag body 3, and further, FIG. 3A or As shown in FIG. 3B, the grip portion 11 is raised so that the longitudinal direction of the grip portion 11 is substantially vertical (that is, the bag body is vertically oriented), and the bag body 3 is placed in a container such as a cup 100. Hot water is poured, and the bag body 3 is pushed into the hot water W by the grip portion 11 to immerse the bag body 3.

Alternatively, put the extraction bag in the cup 100 containing hot water, and similarly move the extraction bag 1A up and down to extract.

Further, as shown in FIG. 4, the extraction bag 1A may be left unattended by releasing the hand from the grip portion 11 while the bag body 3 is immersed in hot water and supporting the grip portion 11 by the inner wall of the cup 100. Extraction can proceed while left unattended. Alternatively, the bag body 3 may be moved up and down in hot water by gripping the grip portion 11 again and moving the grip portion 11 up and down to promote extraction.
The above-mentioned extraction method may be carried out with cold water.

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

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

(Production method)
As a method for manufacturing the extraction bag 1A, for example, as shown in FIG. 7, the water-permeable filterable sheet 21 is oriented so that the folding line L1 of the thin plate-shaped member 10 is aligned with the short direction of the long water-permeable filterable sheet 21. A sheet 20 for manufacturing an extraction bag is prepared in which thin plate-shaped members 10 are arranged and attached at predetermined intervals. In the figure, the area sandwiched by the alternate long and short dash line is used for manufacturing one extraction bag.

By using this extraction bag manufacturing sheet 20 in the packaging filling machine, the extraction bag 1A can be continuously manufactured. In this case, first, as shown in FIG. 8, the extraction bag manufacturing sheet 20 is folded in half so as to overlap both sides in the longitudinal direction, and the side sides in the longitudinal direction are welded together to form the vertical seal 22. To form a tubular body 24. Next, by alternately repeating the formation of the horizontal seal 23 for welding the tubular body 24 in the lateral direction and the filling of the extraction material M into the bag body 3, extraction is performed on the side side of the bag body 3 of the extraction bag 1A. An extraction bag continuum in which the bags 1A are connected vertically is manufactured, and this is separated into individual extraction bags to obtain an extraction bag 1A. Alternatively, fusing is also performed at the same time when the lateral seal 23 in the lateral direction of the cylindrical body is formed, and the individually separated extraction bags 1A are continuously manufactured.

(Modification mode)
The extraction bag of the present invention can have various changes. For example, in the plan view extraction bag 1D shown in FIG. 9, in the plan view extraction bag 1A shown in FIG. 1A, the upper portion 11x of the grip portion and the reinforcing portion 12 are continuous via the horizontal polygonal line L3. On the other hand, the grip portion 11 and the reinforcing portion 12 are separated by a line L4. There may be a gap between the grip portion 11 and the reinforcing portion 12 at the portion of the cut line L4. Even if the grip portion 11 and the reinforcing portion 12 are separated, as shown in FIG. 10, the grip portion 11 is raised in the same manner as the extraction bag 1A described above, and an extract having a desired concentration can be easily and quickly obtained. Further, even if the extraction bag 1D is left in the cup at the time of extraction, it is easy to grip the grip portion 11 again.

The extraction bag 1E in the plan view shown in FIG. 11 has a reinforcing portion 12 formed so as to surround the outer peripheral portion of the grip portion 11. This extraction bag 1E also raises the grip portion 11 as shown in FIG. 12, and can easily and quickly obtain an extract having a desired concentration. Further, similarly to the extraction bag 1A shown in FIG. 1A, even if the extraction bag 1E is left in the cup at the time of extraction, it is easy to grip the grip portion 11 again.

In the extraction bag 1F in the plan view shown in FIG. 13, the position of the upper end of the pair of diagonal polygonal lines L2 is separated from the upper side 3a of the bag body, and the position of the horizontal polygonal line L3 is set in the bag body as compared with the extraction bag 1E shown in FIG. The space formed at the upper end of the bag body formed when the grip portion 11 is pulled up is widened away from the upper side 3a. Further, in the upper portion 11x of the grip portion, the central portion in the width direction of the bag body has a recess 11d and is not attached to the bag body 3. As described above, in the present invention, the upper portion of the grip portion may be fixed to the surface 3x of the bag body, and it is not essential that the upper portion 11x of the grip portion has a band shape, and the entire surface of the upper portion 11x of the grip portion is the bag body 3 It is not essential that it is affixed to.

The extraction bag 1G in the plan view shown in FIG. 14 is the extraction bag 1A shown in FIG. 1A with the reinforcing portion 12 omitted. By omitting the reinforcing portion 12, as shown in FIG. 15, the bag main body 3 tends to swell in a state where the grip portion 11 is raised from the bag main body 3. Therefore, a space S is formed in the bag body 3 on the portion filled with the extraction material. In particular, in this embodiment, the upper portion 11x of the grip portion is the bag body 3 so that the space S is secured in the bag body even if both upper ends of the bag body 3 are bent when the bag body 3 is immersed in hot water. Since it is formed to be sufficiently wide with respect to the width of the upper side 3a, hot water easily flows into the bag body.

In the extraction bag 1H in the plan view shown in FIG. 16, in the extraction bag 1G shown in FIG. 14, the upper portion 11x of the grip portion fixed to the bag body and the raiseable portion 11y of the grip portion are formed to have the same width. It is a thing. In this extraction bag 1H as well, the grip portion 11 can be triggered in the same manner as in the extraction bag 1G shown in FIG. At that time, the surface 3x of the bag body 3 is broken near the lower end of the upper portion 11x of the grip portion fixed to the bag body, and a space S can be formed in the upper part of the bag body (see FIG. 2). In this case, in order to secure this space S even if both upper ends of the bag body 3 are bent when the bag body 3 is immersed in hot water, the length of the upper portion 11x of the grip portion in the width direction of the bag body is secured. Is preferably 50% or more, more preferably 70% or more of the width of the upper side 3a of the bag body 3.

In the extraction bag 1I in the plan view shown in FIG. 17, the grip portion 11 is formed wider than the extraction bag 1H shown in FIG. 16, the grip portion 11 is O-shaped, and the evoking portion of the grip portion is U. It is shaped like a U-shape, and the portion surrounded by the U-shape is attached to the surface 3x of the bag body to form a reinforcing portion 12. Further, the pair of diagonal polygonal lines L2 extends toward the extension line of the vertical polygonal line L1, and the extension line of the pair of diagonal polygonal lines L2 and the extension line of the vertical polygonal line L1 intersect at one point, but with the pair of diagonal polygonal lines L2. The vertical polygonal line L1 does not directly intersect.

This extraction bag 1I can trigger the grip portion 11 as shown in FIG. 18, and similarly to the above-mentioned extraction bag 1A, an extract having a desired concentration can be easily and quickly obtained. Further, even if the extraction bag 1I is left in the cup at the time of extraction, it is easy to grip the grip portion 11 again.

The extraction bag 1J in the plan view shown in FIG. 19 is the extraction bag 1I shown in FIG. 17 with the reinforcing portion 12 omitted. In this extraction bag 1J, the bag body 3 tends to swell when the grip portion 11 is raised due to the absence of the reinforcing portion 12, while the bag body 3 is easily crushed by pressing the bag body 3 with the grip portion. In particular, the upper portion 11x of the grip portion and the raiseable portion 11y of the grip portion have the same width, and the width of the grip portion 11 is 70% or more of the width of the upper side 3a of the bag body 3, so that the bag is formed by the grip portion 11. The force that pushes the main body toward the bottom of the cup is easily transmitted to almost the entire width of the bag main body 3, and when the bag main body 3 is pulled up from the bottom of the cup by pulling up the grip portion 11, the extraction material is filled in the bag main body. A space S is formed on the portion. Therefore, as shown in FIG. 20, the bag body 3 can be moved up and down in the hot water of the cup 100, and the bag body 3 can be squeezed or returned to the inflated state to pass the hot water through the bag body to promote extraction. can.

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

It is preferable that the opening of the extraction bag for hand-packing is provided with a means for closing the opening after filling the extraction material. For example, as an empty bag for hand-packing corresponding to the above-mentioned extraction bag 1J, a thin plate-shaped member 10 is provided on two facing surfaces of the bag body 3 as in the hand-packing extraction bag 30 shown in FIG. The water-permeable filterable sheet forming the non-surface 3y is folded back on the surface 3y, and in that case, the folded-back portion 5 is provided on the bag body 3 so that the bottom side 3b of the bag body becomes a fold, and the bottom side 3b thereof is provided. An opening 6 is formed at the position of. The extraction bag user closes the opening 6 as shown in FIG. 22 by manually packing the extraction material M from the opening 6 of the empty bag body 3 and then flipping the front and back surfaces of the folded portion 5. 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 lower part of the bag body 3, and for example, the chuck described in Japanese Patent No. 4289363 may be provided in the opening 6 for food packaging. Double-sided tape for use may be used.

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

1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1I, 1J Extraction bag 3 Bag body 3a Top side of bag body 3b Bottom side of bag body 3x Face of bag body 3y Face of bag body 5 Folded part 6 Opening 10 Thin plate-shaped member 11 Grip portion 11a Upper side of the grip portion 11b Lower side of the grip portion 11d Recession of the grip portion 11 x Upper portion of the grip portion fixed to one side of the bag body 11y Raising portion of the grip portion 12 Reinforcement portion 20 Extraction bag manufacturing Sheet 21 Water-permeable sheet 22 Vertical seal 23 Horizontal seal 24 Cylindrical body 30 Hand-packed extraction bag 100 cup L1 Vertical fold line L2 Diagonal fold line L3 Horizontal fold line L4 Cut line A Sticking area M Extraction material S Space W Hot water

Claims

An extraction bag having a bag body formed from a water-permeable filterable sheet, a thin plate-shaped 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 an 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.
A vertical polygonal line in the vertical direction of the bag body is provided at the lower part of the grip portion so that the lower part can be folded in half.
A pair of diagonal polygonal lines extending from the opposite side of the grip portion toward the upper end of the vertical polygonal line or an extension line thereof are formed in the provocative portion of the grip portion above the vertical polygonal line. bag.
The extraction bag according to claim 1, wherein the upper end of the diagonal polygonal line is below the upper side of the bag body.
The extraction bag according to claim 1 or 2, wherein a polygonal line in the width direction of the bag body, which is the axis of raising, is not formed on the grip portion.
The extraction bag according to any one of claims 1 to 3, wherein the grip portion extends from the vicinity of the upper side to the vicinity of the bottom side of the one side.
The extraction bag according to any one of claims 1 to 4, wherein the portion of the grip portion along the upper side is attached to the one side.
The extraction bag according to any one of claims 1 to 5, wherein the grip portion has a wide portion along the upper side of the one side.
The extraction bag according to any one of claims 1 to 6, wherein the upper side of the grip portion projects from the upper side of the bag body to the outside of the one side.
The pullable portion of the grip portion is strip-shaped, and the thin plate-shaped member has reinforcing portions extending in the vertical direction of the bag body on both sides of the liftable portion of the grip portion, and the reinforcing portion is attached to the bag body. Extraction bag according to any one of 1 to 7
The extraction bag according to any one of claims 1 to 7, wherein the thin plate-shaped member has a reinforcing portion formed on the outer peripheral portion of the grip portion, and the reinforcing portion is attached to the bag body.
2. The extraction bag according to any one of 7.
In the extraction bag according to any one of claims 1 to 10, the bag body is not filled with the extraction material, and the bag body is provided with an opening for filling the extraction material.