TW202134135A - Extraction bag can accelerate extraction speed to further easily obtain extracted liquid that has concentration equivalent to that obtained by extraction manner of dripping in short time - Google Patents

Abstract

An extraction bag 1A according to the disclosure comprises: a bag body 3 formed by water-passing filtration sheet material 2; a thin plate-shaped component 10 disposed on an outer surface of the bag body 3; and an extraction material filled in the bag body 3. The bag body 3 has a first surface 3A and a second surface 3B corresponding to each other, and an upper edge 4a formed as an edge of the surfaces. The thin plate-shaped component 10 has a first component 10A on the first surface 3A of the bag body 3 and a second component 10B on the second surface 3B of the bag body. The components 10A, 10B continues by spacing along a first horizontal broken line Lh1 of the upper edge 4a. The thin plate-shaped component 10 has: a pair of long strip areas12 crossing the first component 10A and the second component 10B, central sticking portions 11 clamping the first component 10A from the left and right sides, and erecting from the bag body to face each other; and a vertical folding line Lv1 enabling the long strip areas 12 to stand up. The extraction bag 1 is a tea bag type extraction bag provided for filling the extraction materials such as coffee powder. It is easy to immerse the bag body into hot water or enable the bag body to upwardly and downwardly move.

Description

Extraction bag

The present 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 easily brew green tea, black tea, oolong tea and other beverages, tea bags filled with such tea leaves in a water-permeable bag with a sling were widely used. The same is true for coffee, in addition to drip-filter type extraction bags 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 an attempt is made to immerse the tea bag type coffee extraction bag in hot water, the body of the bag filled with coffee powder tends to float in the hot water because the coffee powder contains carbon dioxide, making it difficult to extract coffee sufficiently. Therefore, it is proposed to install a hook-shaped sheet formed by a thin plate-shaped member on one side of the bag body for filling coffee powder in advance, and the hook-shaped sheet can be hooked in a way that the bag body filled with coffee powder does not float in the hot water. Those hanging on the edge of the cup (Patent Document 1).

In addition, it is proposed to install a handle part that has a structure that bends a thin plate-like member to expand and contract like a pantograph to a bag body filled with coffee powder, and move the handle part up and down in the hot water of the immersion bag body. This promotes the extraction of coffee (Patent Document 2). [Prior Technical Literature] [Patent Literature]

[Patent Document 1] Utility Model Registration No. 3140084 Bulletin [Patent Document 2] Japanese Patent Application Publication No. 2006-273379

[The problem to be solved by the invention]

However, even if the bag body filled with coffee powder is immersed in hot water in the previous coffee extraction bag, even if the hook-shaped sheet or handle formed by the thin plate-like member is held, the bag body to be floated is attempted to forcibly sink Into the hot water, but it is difficult to sink the bag body into the hot water due to the bending or deflection of the thin plate-shaped member. In order to promote the extraction of coffee, even if the hook-shaped piece or the handle part is moved up and down, the bag body will not move up and down in the same way as the holding part in hot water. 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 swells in the hot water, and the hot water does not easily penetrate the inside of the whole coffee powder. Therefore, it is difficult to obtain a coffee liquid with the same concentration as the drip filter type in a time less than the same level as the drip filter type when the bag body is immersed in the hot water tea bag type extraction bag.

In contrast, 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. The problem is that it is easy to sink the bag body into hot water. Or move up and down, and make the hot water flow to the whole extraction material in the bag body, and easily obtain a sufficient concentration of the extraction liquid. [Technical means to solve the problem]

The inventor of the present invention has completed the present invention by conceiving the following situation. That is, when a thin plate-shaped member is installed in a tea bag type extraction bag filled with a bag body filled with an extraction material, the thin plate-shaped member can be set to a specific shape. The thin plate-shaped member is formed into a strong rod shape extending from the central part of the bag body. By holding the rod-shaped part, the bag body can easily sink into hot water or move up and down, and the bag body can also be enlarged. The area or head space of the upper surface occupied by the extraction material. When the bag body is moved up and down in hot water, the hot water flows downward relative to the upper surface of the extraction material in the bag body, and the hot water is easy to penetrate Extract the inside of the material.

That is, the extraction bag of the present invention has: a bag body, which is formed of a water-permeable filterable sheet; a thin plate-shaped member, which is provided on the outer surface of the bag body; and an extraction material, which is filled in the bag body; and The bag body has a first face and a second face that oppose each other, and the upper edge that becomes the edge of the two faces, In the case of unfolding the bag body in such a way that the first surface is located below the upper side and the second surface is located on the upper side, The thin plate-shaped member has a first member on the first side of the bag body and a second member on the second side of the bag body, and the first member and the second member are continuous through the first horizontal fold line along the aforementioned upper side, and The thin plate-shaped member has: a central sticking part, which sticks to the first surface of the bag body at the central part of the first member; A pair of elongated areas, which span the first member and the second member, can stand up from the bag body and sandwich the central sticking part from the left and right; and The longitudinal fold line can respectively stand the pair of long strip areas from the side close to the side of the bag body to make the pair of long strip areas face each other.

In addition, the present invention provides an extraction bag for manual filling, in which no extraction material is filled in the bag body in the above extraction bag, and an opening for filling the extraction material is provided in the bag body. [Effects of Invention]

According to the present invention, a pair of long strip regions of the thin plate-shaped member arranged on the outer surface of the bag body filled with the extraction material are bent in such a way that they become opposite, thereby suppressing the pair of long strip regions from flexing each other, And it forms a strong rod shape extending from one surface of the bag body. Therefore, by holding the rod-shaped portion, the bag body can be easily submerged in hot water or moved up and down. Therefore, hot water can easily pass through the bag body.

In addition, since a pair of long strip areas are provided across the two opposing surfaces of the bag body, by making them a rod shape, and setting the long strip area provided on only one side of the bag body into a rod shape In comparison with the situation, the rod-shaped part becomes a long strip. Therefore, when the stick-shaped part is held to cause the bag body in the hot water to sink or move up and down, it is possible to prevent the hand holding the stick-shaped part from becoming hot due to the hot air.

Furthermore, according to the present invention, by tilting and holding the rod-shaped portion, the shape of the portion occupied by the extraction material in the bag body is changed in such a way that the area of the upper surface thereof is enlarged, so that the head space can also be enlarged. Therefore, the hot water flowing into the bag body can easily flow downward from the upper surface of the extraction material, which promotes the extraction not only from the surface of the part occupied by the extraction material, but also from the whole body in the bag body. Especially, in the state where the second surface of the bag body is pulled up by the central pull-up portion of the thin plate-shaped member, the pull-up of the central pull-up portion can also prevent the bag body from being downward due to the self-weight of the extracted material Pull and flatten, thereby expanding the headspace. Furthermore, in the state where the reinforcing part extending in the width direction of the bag body is provided under the rod-shaped portion, the width direction of the bag body can be prevented from shrinking, and the entire space inside the bag body can be enlarged.

Therefore, according to the present invention, the extraction speed can be accelerated, and an extract having a concentration equal to or higher than that of the trickling extraction method can be easily obtained in a short time.

Hereinafter, the present invention will be specifically described with reference to the drawings. In addition, in each figure, the same symbol indicates the same or equivalent component.

(Overall composition) Figures 1A and 1B are respectively a front view (front view of the first member side) and a rear view (back view of the second member side) of the extraction bag 1A of an embodiment of the present invention without erecting the elongated area of the thin plate-shaped member picture). In addition, FIG. 4A is a side view of the extraction bag 1A in a state where the elongated area of the thin plate-shaped member is raised, FIG. 4B is a perspective view of the extraction bag 1A viewed from the first side of the bag body, and FIG. 4C is from the bag body Observe the three-dimensional view of the extraction bag 1A from the second surface side.

The extraction bag 1A has: a bag body 3 composed of a flat bag formed of a water-permeable filterable sheet; a thin plate-shaped member 10 provided on the outer surface of the bag body 3; and an extraction material filled in Inside the bag body 3. The bag body 3 has a first surface 3A and a second surface 3B facing each other, and an upper edge 4a that becomes the edge of the two surfaces. In this embodiment, the upper side 4a is a fold line outside the first surface 3A and the second surface 3B.

Figure 2 is an expanded view of the extraction bag 1A, showing the first side A of the bag body and the first member 10A of the thin plate-shaped member 10 arranged on the first side 3A on the lower side of the paper side of the upper side 4a. The upper side of the paper shows the second surface 3B of the bag body and the second member 10B of the thin plate-shaped member 10 provided on the second surface 3B. In this figure, the area painted with diagonal lines indicates the contact area between the thin plate-shaped member 10 and the bag body 3, and the area painted with black dots indicates the exposed part of the bag body 3 in the unfolded view. Furthermore, in the present invention, the sticking area is not limited to the aspect shown in the figure.

The first member 10A and the second member 10B are continuous across the first horizontal fold line Lh1, and the first horizontal fold line Lh1 overlaps with the upper side 4a of the bag body and is along the upper side 4a.

At the center of the first member 10A, there is formed a center sticking part 11 which sticks to the first surface 3A of the bag body. Preferably, the sticking area of the central sticking portion 11 includes at least the vicinity of the first horizontal fold line Lh1. In this embodiment, substantially the entire surface of the central sticking portion 11 is stuck to the bag body 3.

The thin plate-shaped member 10 is formed with a pair of long regions 12 (a region surrounded by a two-dot chain line in FIG. 2) sandwiching one of the central bonding portions 11 from left and right. The elongated region 12 is formed to straddle the first member 10A and the second member 10B, and can stand up from the bag body 3.

In addition, a longitudinal fold line is formed on the thin plate-shaped member 10, which can respectively stand a pair of elongated regions 12 from the sides close to the sides 4b of the bag body, and make the same pairs as shown in FIG. 4A, FIG. 4B, and FIG. 4C. Towards. The longitudinal fold line extends in the length direction of the elongated region 12, and when a pair of elongated regions 12 are erected, they form a rising axis of rotation. Furthermore, in the present invention, a pair of elongated regions 12 can be erected and the longitudinal fold lines that are equal to each other are not strictly formed in the longitudinal direction of the elongated regions or the upper and lower directions of the bag body, as described later. The fourth longitudinal fold line Lv4 is generally formed obliquely with respect to the longitudinal direction of the elongated region 12. On the other hand, in the present invention, the longitudinal fold line preferably forms at least a pair on the first member 10A, more preferably at least a pair is also formed on the second member 10B, and it is particularly preferable that the longitudinal fold line of the second member 10B is in the It is formed on the extension line of the longitudinal fold line of the first member 10A. In this embodiment, since the left and right side edges 11a of the central sticking portion 11 at the first member 10A are cut away from the elongated area 12, the first member 10A is closer to the bottom of the bag body than the central sticking portion 11 The end of the elongated region 12 on the side 4c forms a pair of first longitudinal fold lines Lv1. In addition, a pair of second vertical fold lines Lv2 extending from the first horizontal fold line Lh1 is formed in the second member 10B, and a third vertical fold line Lv3 is formed in a portion where the ends of the pair of elongated regions 12 are continuous with each other.

Furthermore, the horizontal fold lines Lh1 and the vertical fold lines Lv1, Lv2, Lv3 of the thin plate-shaped member 10 can be formed by hole-shaped wiring, half-cutting, crimping, or the like.

It adopts a structure in which a pair of elongated regions 12 spread over one of the first member 10A and the second member 10B are erected from the bag body 3 with longitudinal fold lines and are equally opposed to each other. A pair of elongated areas 12 of the main body 3 stand up as long and strong rod-shaped handles when the extracted material in the bag main body 3 is submerged in hot water.

In this embodiment, the first member 10A is closer to the bottom edge 4c of the bag body at the lower end of the longer region 12, and has a reinforcing portion 13 (FIG. 2) that is attached to the bag body 3. Thereby, the vertical fold line LV1 that forms the axis of the upright at the lower end of the elongated region 12 is sandwiched between the central sticking portion 11 and the reinforcing portion 13, and the strength of the lower end is improved. In addition, the reinforcing portion 13 extends in the width direction of the bag body. Therefore, the width direction shrinkage of the bag body caused by the self-weight of the extraction material is prevented, and a wide space can be ensured in the bag body 3. Furthermore, in the present invention, a reinforcing part 13 is provided as necessary.

On the other hand, in this embodiment, the second member 10B has a central upper end 14 extending from the first horizontal fold line Lh1 between the pair of elongated regions 12. The central upper end 14 is connected to the elongated region 12 via the second vertical fold line Lv2, and it does not float in contact with the bag body 3. In addition, the second member 10B has a central raised portion 15 which is connected to the central upper end portion 14 via a second horizontal fold line Lh2. The central pull-up portion 15 is cut away from the elongated area 12. In addition, the central pull-up portion 15 has an adhesion area 15A with the bag body at a portion away from the central upper end portion 14. Therefore, in the state where the pair of elongated regions 12 stand up from the bag body 3 and face each other, as shown in FIGS. 4A and 4C, the center portion of the second surface 3B of the bag body is turned toward the upper side 4a of the bag body Pull up in the direction, the area of the upper surface of the part occupied by the extraction material in the bag body becomes larger, and the head space becomes larger. Therefore, the hot water flowing into the bag body can be used to efficiently extract the extraction material, and the time required to obtain a specific concentration of the extract can be shortened.

(Extraction material) As the extraction material filled in the bag body 3, tea such as coffee powder, black tea, green tea, and Chinese herbal medicines can be cited. Generally speaking, when the coffee powder is filled in the bag body 3 and is about to be immersed in hot water, the bag body is floated due to the carbon dioxide contained in the coffee powder, so it is difficult to extract. However, according to the present invention, by erecting the elongated area 12 into a strong rod shape, the rod-shaped portion is used like a handle extending from the central portion of the bag body 3, so that the bag body 3 can be easily squeezed into the cup. The hot water inside, or move up and down in the hot water. Therefore, since the hot water not only penetrates the surface layer of the whole coffee powder in the bag body, but also the hot water penetrates the inside, the extract can be efficiently obtained from the whole coffee powder. For extracting materials other than coffee powder, hot water can also be used to permeate the extracting material, so that the extract can be efficiently obtained from the extracting material as a whole.

Furthermore, because the extraction bag of the present invention is used in a state where the extraction material is sealed in the bag body 3, the extraction material will not be dispersed outside the bag body when the extraction bag is used.

(The bag body) In this embodiment, the shape of the bag body 3 is a flat bag with a three-side seal with the upper side as the outer fold line of the water-permeable filter sheet. In the present invention, the shape of the bag body 3 is not limited to a flat bag. For example, it may also be a crotch bag with inner baffles at the bottom or sides. In addition, the upper edge 3a of the bag body 3 is not limited to being an outer fold line, and may also be a sealing edge, but it is better to set an outer fold line in the manufacturing method of the extraction bag.

The net plane 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, the bag body 3 can be set to a size suitable for a commercially available coffee cup.

(Water filterable sheet) As the water-permeable filter sheet forming the bag body, various water-permeable and filterable materials can be used to extract the extraction material, and the constituent material of the water-permeable filter sheet can be appropriately selected according to the type of extraction material. For example, generally speaking, as a water-permeable filter sheet used for extracting beverages, it is known to include synthetic fibers such as polyester, nylon, polyethylene, polypropylene, vinylon, etc., semi-synthetic fibers such as linoleum, 楮, scent Such as natural fiber alone or composite fiber woven or non-woven fabric; papers such as tea bag base paper containing mixed paper of manila hemp, wood pulp, polypropylene fiber, etc., can be used in the present invention. From the point of disposability 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, since the water-permeable filterable sheet has transparency so that 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, in contrast to the dripping filter type extraction bag directly injecting hot water into the extraction material, in the extraction bag of the present invention, since the hot water must be supplied to the extraction material through the water-passing filter sheet, as long as no extraction material is produced For the leakage of powder, it is better to use the thicker mesh than the water-permeable filter sheet used in the drip filter type extraction bag. For example, in the case of 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 LH1096 air permeability A method (using Frazier air permeability Method of testing machine)).

(Thin plate member) It is preferable that the thin-plate-shaped member has water repellency, and it can be formed by pressing thin-plate-shaped materials such as cardboard or plastic sheet with resin laminated on the surface. From the point of disposability 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 as shown in FIG. 1A and FIG. Therefore, as a method of use from this state, first, as shown in FIG. same plane. At this time, the attaching area 15A (Figure 2) of the central pull-up portion 15 of the second side 3B of the bag body is pulled up toward the upper side 4a. The shape of the bag body 3 is flat and the first side 3A is bent. The area of the upper surface occupied by the extraction material in the body becomes larger, and the head space also becomes larger.

Next, as shown in FIG. 4B, the thin-plate-shaped member is bent using the 1st longitudinal fold line Lv1, the 2nd longitudinal fold line Lv2, and the 3rd longitudinal fold line Lv3, and a pair of elongate area|regions 12 are made to oppose. Thereby, the pair of elongated regions 12 form a long and strong rod shape. If so, hold the rod-shaped part, put the extraction bag into a container such as a cup, and pour hot water. Or put the extraction bag into a container filled with hot water. Then, the rod-shaped part including the elongated region 12 can be used to sink the bag body into the hot water, or move up and down in the hot water to increase the extraction speed of the extraction material. At this time, the rod-shaped portion formed by the elongated region 12 of the first surface 3A among the rod-shaped portions covering the length of the first surface 3A and the second surface 3B of the bag body is fixed to the first surface 3A from the second surface 3B The upright rod-shaped part is located above the upper side 4a of the bag body 3, and the rod-shaped part that is higher than the upper side 4a of the bag body 3 can be held by hand, so even if the hot water enters the container, it can still prevent the stick from being held. The hands of the shaped part become hot due to the heat. Of course, cold water can also be used for extraction as needed. In addition, the rod-shaped part can be placed on the inner wall of a container such as a cup in advance, and the bag body can be placed in the container. After extraction, the stick-shaped part can be held to take out the bag body from the container.

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

(Production method) As a manufacturing method of the extraction bag 1A, for example, as shown in FIG. 5, a sheet 20 for manufacturing an extraction bag is prepared. The water-permeable filterable sheet 21 is aligned with the longitudinal direction of the water-permeable filterable sheet 21, and the thin-plate-shaped members 10 are arranged at predetermined intervals and stuck to the water-permeable filterable sheet 21. In the picture, the area sandwiched by the two-dot chain line is used to make 1 portion of the extraction bag.

The extraction bag 1A can be continuously manufactured by using this extraction bag manufacturing sheet 20 in a packaging filling machine. In this case, first, as shown in FIG. 6, 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. Secondly, by alternately repeating the formation of the horizontal seal 23 that welds the cylindrical body in the short-side direction and the filling of the extraction material M into the bag body 3, the extraction bag 1A is made up and down on the side of the bag body 3 of the extraction bag 1A. The connected continuum of extraction bags is cut into individual extraction bags to obtain extraction bag 1A. Alternatively, fusing is also performed at the same time when forming the transverse seal 23 in the short side direction of the cylindrical body, and the extraction bag 1A that is cut into individual pieces is continuously manufactured.

(Change state) The extraction bag of the present invention can have various changes. For example, the extraction bag 1B with the expanded view shown in FIG. 7 is for the extraction bag 1A shown in the expanded view shown in FIG. According to this extraction bag 1B, even if the rod-shaped portion including the pair of elongated regions 12 is inclined as shown in FIG. Therefore, by tilting the rod-shaped part during extraction of the extraction material, compared with the case where the rod-shaped part is erected in the vertical direction, the shape of the portion occupied by the extraction material in the bag body 3 can be changed to its upper surface. Large changes in the way, which can also make the head space larger. Therefore, the extraction bag 1B can also easily extract from the entire extraction material in the bag body.

The extraction bag 1C having the expanded view shown in FIG. 9 is for the extraction bag 1A of the expanded view shown in FIG. It is continuous across the longitudinal fold line Lv1'. This longitudinal fold line Lv1' is the one extending the second longitudinal fold line Lv2 between the central upper end 14 and the elongated regions 12 provided on the left and right sides of the second member 10B toward the first member 10A. As a result, the rotating shaft when the long strip area 12 is erected is the part held on the surface of the bag body, which is longer than the extraction bag 1A in the expanded view shown in FIG. 2, thereby erecting a pair of strip areas 12 The formed rod-shaped member has an improved installation strength for the bag body 3.

In addition, in the extraction bag 1C, the first member 10A has a reinforcing portion 13a attached to the bag body 3 on the outer periphery of the elongated region 12. The upper part is extended, and a reinforcing part 13b is formed on the upper part of the second member 10B to adhere to the bag body. Therefore, in the state where the elongated area 12 is raised, as shown in FIG. Pulling up the part of the surface 3B makes the head space in the bag body easier to enlarge, which can further increase the extraction speed.

The extraction bag 1D with the expanded view shown in FIG. 11 is for the extraction bag 1C with the expanded view shown in FIG. 16 of the hooks. In the extraction bag 1D, if the elongated area 12 is erected, the hooking portion 16 can be protruded from the forming surface of the central abutment portion 11 as shown in FIG. 12, so it can be extracted as shown in FIG. When the material is extracted, the hooking portion 16 is hooked on the opening wall of the cup 100. Therefore, the hand can be removed from the extraction bag 1D while keeping the bag body 3 immersed in hot water during extraction, or the extraction bag 1D can be drained before the extraction bag 1D is discarded. The bag 1D is hooked to the empty cup.

The extraction bag 1E having the expanded view shown in FIG. 14 is for the extraction bag 1D having the expanded view shown in FIG. It's an independent. In addition, notches 17 are provided at the ends of one pair of elongated regions 12 in the second member 10B, respectively. Therefore, as shown in FIG. 15, the ends of the elongated regions 12 standing up from the bag body can be engaged with each other at the notch 17. In this extraction bag 1E as well, the elongated area 12 functions as a strong rod-shaped part.

The extraction bag 1F with the expanded view shown in FIG. 16 omits the central pull-up part 15, the reinforcing parts 13, 13a, 13b, etc., for the aforementioned extraction bag, but has a central sticking part 11 at the center of the first member 10A, which clamps One of the pair of elongated regions 12 of the central sticking portion 11 is formed to straddle the first member 10A and the second member 10B. In addition, a pair of fourth vertical fold lines Lv4 are formed between the central sticking portion 11 and the elongated region 12, and the fourth vertical fold lines Lv4 are formed obliquely with respect to the longitudinal direction of the elongated region 12.

The same applies to the extraction bag 1F. If the thin plate-shaped member is bent using the vertical folding lines Lv3 and Lv4 to stand up the pair of long strip regions 12 from the bag body 3 and make them face each other, as shown in FIG. 17 , The long strip area 12 can form a strong rod-shaped part extending from the first surface 3A of the bag body, and by holding the rod-shaped part, the bag body 3 can be immersed in hot water or moved up and down in the hot water, This can speed up the extraction speed.

In addition, since the portion sandwiched between the pair of elongated regions 12 is formed in the second member 10B, the upper abutting portion 18 that is attached to the bag body is formed, so if the elongated regions 12 are erected and opposed as shown in the figure The main body of the bag body shown in 17 swells, and the top space becomes larger. With this swelling, the extraction bag 1F can also speed up the extraction speed of the extraction material.

On the other hand, in the extraction bag 1x of the comparative example having the expanded view shown in FIG. 18, for the extraction bag 1F having the expanded view shown in FIG. 16, a pair of elongated regions 12 are formed only on the second member 10B. Therefore, if the pair of elongated regions 12 are erected from the bag body and are equally opposed, as shown in FIG. 19, the first member 10A and the second member 10B are bent at the first horizontal fold line Lh1. In addition, the bag body 3 hangs down in a flat state from the first horizontal fold line Lh1. Therefore, it is difficult to use the elongated area 12 erected from the bag body 3 to sink the bag body 3 into hot water or to move the bag body in the hot water, and the effect of the present invention cannot be obtained.

In the present invention, the length in the longitudinal direction of the first member and the second member may be the same or different. For example, the extraction bag 1G having the expanded view shown in FIG. 20 is in the extraction bag 1A of the expanded view of FIG. 2 described above by extending the length of the second member toward the bottom 4c side of the second surface 3B of the bag body The length of the strip area 12 is lengthened to lengthen the holdable part.

(Extraction bag for manual filling) In the aforementioned extraction bags 1A, 1B, 1C, 1D, 1E, 1F, and 1G, the bag body 3 may not be filled with the extraction material, but the bag body 3 may be set as an empty bag in advance, and the extraction material may be set in the bag body 3. The opening for filling is set as an extraction bag for manual filling. According to the extraction bag for manual filling, each extraction bag user can fill the empty bag with the extraction material according to their own preferences and obtain the extraction liquid.

Preferably, the opening of the extraction bag for manual filling is provided with a mechanism for closing the opening after filling the extraction material. For example, as an empty bag for manual filling corresponding to the aforementioned extraction bag 1A, like the extraction bag 30 for manual filling shown in FIG. The folded portion 5 in which the water-permeable filter sheet of 3 is folded toward the surface side does not need to seal the lower end of the bag body 3 and the opening 6 is formed in advance. After the user of the extraction bag manually fills the opening 6 of the bag body 3 that forms the empty bag with the extraction material M, the opening 6 can be closed as shown in FIG. 22 by turning the front and back sides of the folded portion 5.

The mechanism for closing the opening 6 of the empty bag is not limited to the folding portion 5 provided under the bag body 3. For example, the chuck described in Patent No. 4,289,363 can be installed in the opening 6, or food packaging can be used. Use double-sided tape.

In the above, various aspects of the present invention have been described, but in the present invention, various aspects of changes 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 1x: extraction bag 3: The bag body 3A: Side 1 3B: Side 2 4a: top 4b: side 4c: bottom edge 5: Folding part 6: Opening 10: Thin plate member 10A: The first member 10B: The second member 11: Central sticking part 11a: The side of the central sticking part 12: Long strip area 13: Reinforcement Department 13a: Reinforcement Department 13b: Reinforcement Department 14: Upper center 15: Central pull-up part 15A: Sticking area 16: hook part 17: gap 18: The upper sticking part 20: Sheets for making extraction bags 21: Water filterable sheet 22: Vertical sealing 23: horizontal sealing 30: Extraction bag for manual filling 100: cup Lh1: The first horizontal fold line, horizontal fold line Lh2: 2nd horizontal fold line Lv1: Vertical fold line, first vertical fold line Lv1’: Vertical broken line Lv2: Vertical fold line, second vertical fold line Lv3: 3rd vertical broken line Lv4: Vertical fold line, 4th vertical fold line M: extraction material

Fig. 1A is a front view of the extraction bag 1A of the embodiment (a side plan view of the first member). Fig. 1B is a rear view of the extraction bag 1A of the embodiment (a side plan view of the second member). Fig. 2 is an exploded view of the extraction bag 1A of the embodiment. Fig. 3 is a perspective view of the extraction bag 1A in a state where the second member of the thin plate-shaped member is pulled up from the second side of the bag body. Fig. 4A is a side view of the extraction bag 1A of the embodiment in the state where the elongated area is erected. Fig. 4B is a perspective view of the extraction bag 1A of the embodiment in which the elongated region is erected from the first surface side of the main body. FIG. 4C is a perspective view of the extraction bag 1A of the embodiment in the state after the elongated area is erected from the second surface side of the main body. Figure 5 is a plan view of the sheet for making extraction bags. Figure 6 is an explanatory diagram of the manufacturing method of the extraction bag. Fig. 7 is an exploded view of the extraction bag 1B of the embodiment. Fig. 8 is a side view of the extraction bag 1B in a state where the strip area of the embodiment is erected. Fig. 9 is an expanded view of the extraction bag 1C of the embodiment. Fig. 10 is a perspective view of the extraction bag 1C of the embodiment in the state where the long strip area is erected. Fig. 11 is an expanded view of the extraction bag 1D of the embodiment. FIG. 12 is a perspective view of the extraction bag 1D of the embodiment in the state where the long strip area is erected. Fig. 13 is a perspective view of the extraction bag 1D in a state where the strip area is erected and the hooking portion 16 is hooked on the cup. Fig. 14 is a development view of the extraction bag 1E of the embodiment. FIG. 15 is a perspective view of the extraction bag 1E of the embodiment in the state where the long strip area is erected. Fig. 16 is a development view of the extraction bag 1F of the embodiment. Fig. 17 is a perspective view of the extraction bag 1F of the embodiment in the state where the long strip area is erected. Figure 18 is an expanded view of the extraction bag 1x of the comparative example. Fig. 19 is a perspective view of the extraction bag 1x of the comparative example in the state of standing up the long strip area. Fig. 20 is an expanded view of the extraction bag 1G of the embodiment. 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

3A: Side 1

3B: Side 2

11: Central sticking part

12: Long strip area

13: Reinforcement Department

15: Central pull-up part

Claims (10)

An extraction bag, which has: a bag body, which is formed of a water-permeable filter sheet; a thin plate-shaped member, which is arranged on the outer surface of the bag body; and an extraction material, which is filled in the bag body; and The bag body has a first face and a second face that oppose each other, and the upper edge that becomes the edge of the two faces, In the case of unfolding the bag body in such a way that the first surface is located below the upper side and the second surface is located on the upper side, The thin plate-shaped member has a first member on the first side of the bag body and a second member on the second side of the bag body, and the first member and the second member are continuous through the first horizontal fold line along the aforementioned upper side, and The thin plate-shaped member has: a central sticking part, which sticks to the first surface of the bag body at the central part of the first member; A pair of elongated areas, which span the first member and the second member, can stand up from the bag body and sandwich the central sticking part from the left and right; and The longitudinal fold line can respectively stand the pair of long strip areas from the side close to the side of the bag body to make the pair of long strip areas face each other. Such as the extraction bag of claim 1, wherein the front ends of a pair of long strip regions in the second member are continuous with a longitudinal fold line. Such as the extraction bag of claim 1 or 2, in which the second component has: The central upper end, which is between the pair of long strip areas, extends from the first horizontal fold line and is connected to the pair of long strip areas via the fold line, and is not attached to the bag body; and The central pull-up part is connected with the upper end of the central part through a fold line, and is cut away from the long strip area; and The part of the central pull-up part away from the upper end of the central part is attached to the bag body. Such as the extraction bag of any one of claims 1 to 3, wherein in the first member, the left and right sides of the central sticking part are cut away from the long strip area, and the aforementioned longitudinal fold line is formed closer to the central sticking part The bottom side of the bag body. An extraction bag according to any one of claims 1 to 3, wherein in the first member, the central sticking part and the long strip areas provided on the left and right sides thereof are continuous with the longitudinal fold line interposed therebetween. Such as the extraction bag according to any one of claims 1 to 5, wherein the first member has a reinforcing part attached to the bag body in the longer area closer to the bottom side of the bag body. An extraction bag according to any one of claims 1 to 5, wherein the first member has a reinforcing part attached to the bag body on the outer periphery of the elongated area. Such as the extraction bag of claim 7, wherein the reinforcing part extends over the upper side and is arranged on the second member. An extraction bag according to any one of claims 1 to 8, wherein the first member has an L-shaped protruding hook portion on the side of the pair of long strip regions. An extraction bag for manual filling. In the extraction bag according to any one of claims 1 to 9, the bag body is not filled with extraction material, and the bag body is provided with an opening for filling the extraction material.

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