JP7129081B2 - drip bag - Google Patents

Description

TECHNICAL FIELD The present invention relates to a drip bag that can be hung on the top of a container such as a cup to easily obtain an extract of coffee, black tea, green tea, Chinese herbal medicine, or the like.

2. Description of the Related Art Conventionally, a paper drip method has been widely used as a method of brewing coffee that allows users to easily enjoy full-fledged coffee. With this paper drip method, usually several cups of coffee are brewed at once.

On the other hand, in recent years, the number of people living alone has increased, and the number of people in a family has decreased due to the trend toward nuclear families and the declining birth rate. Therefore, instead of the conventional paper drip method, which is basically used to extract several cups of coffee, disposable drip bags have been developed for the purpose of making it easy to extract one cup of coffee. on the market.

Drip bags come in a variety of product forms, but they can be broadly classified as follows: a bag body, in which a water-permeable filter sheet is filled with coffee grounds, is attached to a hanging member, such as a paperboard, to extract coffee. The bag can be divided into an immersion type, in which the bag is hung inside the cup at times, and a mounting type, in which the bag body is hung on the cup by a locking member when brewing coffee. In the immersion type, the coffee grounds are immersed in the coffee extract during coffee extraction, whereas in the placement type, the coffee grounds are not immersed in the coffee extract during coffee extraction. Therefore, the placement type has an advantage over the immersion type in that the original drip coffee flavor can be enjoyed.

As a specific example of the drip bag of the mounting type, a frame is formed by joining plate materials such as cardboard in a ring shape, and a filter paper bag filled with coffee grounds is adhered to the inside of the frame. There is (Patent Document 1). However, this drip bag cannot be manufactured using an automatic filling and packaging machine that automatically repeats the filling of coffee grounds and the bag making, so the productivity is low.

On the other hand, in order to make it possible to manufacture a placement-type drip bag using a filling and packaging machine, support members for supporting the bag body filled with coffee grounds are provided on the front and back sides of the bag body so as to cover substantially the entire width of the bag body. In this case, the positions of the left and right side ends of the support are positioned at the joints of both side ends of the bag body so that the left and right side ends of the support are not joined at the joints of the both side ends of the bag body. (Patent Document 2).

Japanese Patent No. 2901053 Japanese Patent Application Laid-Open No. 2006-204860

The drip bag described in Patent Document 2 is intended to be manufactured using an automatic filling and packaging machine. When the sheet is passed through a filling and packaging machine to form a bag, since the side edges of the support are attached to the sheet immediately before the joining position of both sides of the bag body, the seal bar will hold the support together during bag production. Since the seal bar bites into the sheet, the seal bar floats up, and the joint strength of the sheet is not stable. On the other hand, in order to stabilize the joint strength, the sides of the support must be separated from the joints of the bag body. Since there is a portion not supported by the support in the vicinity, when molten water is poured into an open drip bag, the portion not supported by the support closes or deforms to maintain the desired opening shape. becomes difficult.

In contrast, an object of the present invention is to provide a placement-type drip bag that can be manufactured using an automatic filling and packaging machine and has a stable opening shape when pouring molten metal.

In the case where the sides of the bag body are formed by joining water filtration sheets together, the present inventors have found that a When a strong joint portion is formed by joining the opposing hooking members with each other sandwiched between them, and a fold line extending in the vertical direction of the drip bag is provided on the center side in the width direction of the drip bag from the strong joint portion, It is possible to support the entire circumference of the opening shape of the bag body with the hooking members, and even though the hooking members facing each other are joined together, it is possible to secure a wide opening area for the drip bag. The present invention has been completed by conceiving the above.

That is, the present invention provides a bag body formed of a water-permeable and filterable sheet, a retaining member made of a thin plate-like material provided on two opposing outer surfaces of the bag body, and an extractor filled in the bag body. A drip bag comprising:
a hooking portion provided on the hooking member that can be raised from the bag body;
joints in which the water-permeable and filterable sheets are joined together on the sides of the bag body;
strong joints in which the opposing hanging members are joined via the water-permeable filter sheet of the bag body at the sides of the hanging members adjacent to the joints; To provide a drip bag having a fold line provided in the vertical direction of the drip bag at a portion adjacent to the strong joint part on the center side in the width direction.

According to the drip bag of the present invention, at least one of the two opposing sides of the bag body is a joint to which the water permeable and filterable sheet is joined. Since the hooking members form strong joints, the joints of the sides of the bag body are supported by the hooking members in the vicinity of the joints. Therefore, the entire periphery of the opening of the bag body can be supported by the hooking member, and the shape of the opening of the bag body is stable even during pouring.

Further, according to the present invention, it is not necessary to arrange the side edge of the hooking member immediately before the joining portion of the side edge portion of the bag body. Therefore, when the drip bag of the present invention is manufactured using an automatic filling and packaging machine, it is possible to prevent the seal bar from biting the hooking member together with the sealing bar during bag manufacturing, thereby preventing the seal bar from floating up. The joint strength of the side part of is stabilized.

Furthermore, in the side part of the drip bag of the present invention, a fold line extending in the vertical direction of the drip bag is formed on the center side in the width direction of the drip bag rather than the strong joint part, so when the drip bag is opened The drip bag can be easily opened in a cylindrical shape by folding the hooking member along the fold line.

Therefore, according to the present invention, there is provided a drip bag that can be easily manufactured by an automatic filling and packaging machine, and in which the opening shape of the bag body is stable when the drip bag is hooked to the cup. be done.

FIG. 1 is a front view of a drip bag 1A of the embodiment. FIG. 2 is an explanatory diagram of a method of opening the drip bag 1A of the embodiment. FIG. 3 is a perspective view of the drip bag 1A of the embodiment opened and hooked to the cup. FIG. 4 is a plan view of a drip bag manufacturing sheet 40A that can be used to manufacture the drip bag 1A of the embodiment. FIG. 5A is an explanatory diagram of the manufacturing method of the drip bag 1A of the embodiment. FIG. 5B is an explanatory diagram of the manufacturing method of the drip bag 1A of the embodiment. FIG. 6 is (a) a front view and (b) a rear view of the drip bag 1B of the embodiment. FIG. 7 is a perspective view of the drip bag 1B of the embodiment opened and hooked to the cup. FIG. 8 is a front view of the drip bag 1C of the embodiment. FIG. 9 is a front view of the drip bag 1D of the embodiment. FIG. 10 is a perspective view of the drip bag 1D of the embodiment opened and hooked to the cup. FIG. 11 is a plan view of a drip bag manufacturing sheet 40D that can be used to manufacture the drip bag 1D of the embodiment. FIG. 12A is an explanatory diagram of the manufacturing method of the drip bag 1D of the embodiment. FIG. 12B is an explanatory diagram of the manufacturing method of the drip bag 1D of the embodiment. FIG. 13 is a front view of the drip bag 1E of the embodiment. FIG. 14 is a perspective view of a state in which the drip bag 1E of the embodiment is opened and hooked on the cup. FIG. 15 is a front view of the drip bag 1F of the embodiment. FIG. 16 is a perspective view of the drip bag 1F of the embodiment opened and hooked to the cup. FIG. 17 is a front view of the drip bag 1G of the embodiment. FIG. 18 is a perspective view of the drip bag 1F of the embodiment opened and hooked to the cup. FIG. 19 is a front view of the drip filter 2A of the embodiment. FIG. 20 is a perspective view of the drip filter 2A of the embodiment hooked to the cup.

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 of drip bag)
FIG. 1 is a front view of an unopened drip bag 1A according to an embodiment of the present invention, and FIG. 3 is a perspective view of the drip bag 1A with an open bag body 10 hooked to a cup 100. FIG. be.

The drip bag 1A is composed of a bag body 10 and hooking members 20 provided on two opposing outer surfaces of the bag body 10, that is, on the front and back of the bag body 10. As shown in FIG. In this drip bag 1A, the drip bag 1A is of a mounting type, and in order to stabilize the shape of the opening even when pouring hot water, a hooking member 20 is attached over the entire width of the net opening of the bag body 10 and faces each other. The hooking members are joined together at the strong joint Ts, and a fold line L2 extending in the vertical direction of the drip bag 1A is provided near the strong joint Ts and at the center of the drip bag 1A in the width direction. A pair of hooking portions 22 that can be lifted are provided on the front and back hooking members 20 of the bag body 10, respectively. There is provided a recess 23 for latching on.

(bag body)
The bag body 10 is formed of a water-permeable and filterable sheet, and is filled with ground coffee 50 as an extraction material 50 therein.

As the water-permeable and filterable sheet forming the bag body 10, various types of sheets can be used that allow coffee to percolate when a predetermined amount of ground coffee is filled and hot water is poured into the sheet. In general, the leaching sheet includes, for example, synthetic fibers such as polyester, nylon, polyethylene, polypropylene, and vinylon, semi-synthetic fibers such as rayon, natural fibers such as paper mulberry and mitsumata, which are woven or non-woven fabrics made of single or composite fibers, Papers such as mixed paper made of manila hemp, wood pulp, polypropylene fiber, etc., and papers such as base paper for tea bags are known, and these can be used in the present invention. Therefore, it is preferable that the water permeable and filterable sheet material contains biodegradable fibers. Examples of biodegradable fibers include polylactic acid, polybutylene succinate, polyethylene succinate, and the like.

The bag body 10 has two opposing surfaces that are rectangular in front view. One side portion 11c of the bag body 10 forms a loop at the folds of the water-permeable filter sheet, and the other side portion 11d, the upper side portion 11a, and the lower side portion 11b are formed by the front and back water-permeable filter sheets. is a joint where is joined. Of these, the joints of the side portion 11d, the upper side portion 11a, and the lower side portion 11b all have a joint strength to the extent that the content does not pop out due to the opening of the side portion 11d. The bonding strength is lower than the bonding strength of the bonding portion Tn between the lower side portion 11 and the side portion 11d. Only 11a is a weak joint that is easily opened. In the present invention, as will be described later, the upper side of the bag body 10 may not be a joining portion, but may be a fold of the water-permeable filter sheet, and an easy tearing line such as a perforation may be formed on the fold. . Also, in order to open the upper side portion 11a of the bag body, the upper side portion 11a is not a weak joint portion, but a joint portion with a normal joint strength, and an easy tear line such as a perforation is formed along the upper side portion 11a. You may

The net planar dimension of the bag body 10 can be appropriately set according to the size of the cup or container to which the drip bag is to be hooked. For example, it may be of a size that can be used in a commercially available coffee cup.

(Latching member)
The latching member 20 can be formed by punching a sheet material such as paperboard or plastic sheet. The sheet material is also preferably made of a biodegradable material such as polylactic acid, polybutylene succinate, polyethylene succinate, etc., from the point of disposal after use of the drip bag 1A.

As shown in the front view of FIG. 1, in the drip bag 1A, hooking members 20 are provided on the opposing outer surfaces of the bag body 10 in a state in which a substantially rectangular thin plate material is folded in two. In the above front view, W2 of the hooking member 20 is smaller than the width W1 of the bag body, and has a side portion 21c of the hooking member 20 which is a fold of the thin plate-like material and a fold of the water-permeable and filterable sheet. There is a gap of distance d1 between the side of the hooking member 20 on the side opposite to the fold and the side of the bag body 10. As shown in FIG. As will be described later, when the drip bag 1A is manufactured using a filling and packaging machine, the sealing bar of the ultrasonic sealing device that joins the side portion 11d of the bag body 10 does not bite the locking member 20 and rise. It is preferable that the distance d1 is sufficiently large, and specifically, it is preferable that the distance d1 is 2.0 mm or more.

Further, the distance d2 between the upper side of the hooking member 20 and the upper side of the bag body 10 is also determined by the ultrasonic sealing device that joins the upper side portion 11a of the bag body 10 when the drip bag 1A is manufactured using a filling packaging machine. It is preferable that the seal bar is sufficiently large to the extent that it does not bite the locking member 20 and float.

The hooking member 20 has hooking portions 22 that can be lifted from the bag body and formed symmetrically across the center line A of the net opening width of the drip bag 1A. A pair of hooking portions 22 sandwiching the center line A has a polygonal line L1 on the side on the side of the center line A, and a broken line on the other outline. In the present invention, the polygonal line can be formed by perforation, half-cutting, creasing, or the like.

The hooking member 20 is attached to the bag body 10 at an attachment area S (a portion shaded with diagonal lines at coarse intervals in the figure). That is, above the hooking portion 22 , the sticking region S is arranged along the upper side portion 21 a of the hooking member 20 , and the sticking region S is aligned with the center line A between the pair of hooking portions 22 . are placed along. Therefore, the hooking portion 22 is lifted from the bag body 10 with the folding line L1 as the axis of rotation. In addition, as long as the attachment region between the hooking member 20 and the bag body 10 is set so that the hooking portion 22 can be raised around the fold line L1 on the side of the center line A as the axis of rotation, the formation mode of the attachment region is particularly Not limited. For example, in the portion along the upper side portion 21a of the latching member 20, the adhered area may be intermittently formed over substantially the entire width of the upper side portion 21a.

A fold line L3 is formed along the center line A at the upper end and the lower end of the locking member 20 between the pair of locking portions 22 .

A recess 23 is formed at the lower end of the hooking portion 22 so as to hook the opening wall of the cup when the drip bag 1A is hooked to the cup.

The drip bag 1A is attached to a side portion 21d of the left and right side portions of the hook portion 20, which is adjacent to the joint portion of the side portion 11d of the bag body, through the water permeable filter sheet of the bag body 10. It has a strong joint Ts (portion filled with hatched lines at fine intervals in the figure) where the opposing hooking members are joined together, and is closer to the center side of the drip bag 1A in the width direction than the strong joint Ts ( That is, it is characterized by having a fold line L2 extending in the vertical direction of the drip bag 1A at a portion adjacent to the strong joint Ts on the side of the center line A). In this embodiment, a single polygonal line L2 is formed from the upper side portion 21a of the locking member 20 to the lower side portion 21b as the polygonal line. This polygonal line L2 may be in contact with the strong joint Ts, may partially overlap with it, or may be separated therefrom. If they are separated, the distance d3 between the polygonal line L2 and the strong joint Ts is preferably within 5 mm. If this distance d3 is too large, the opening width of the drip bag will be unnecessarily narrowed.

By providing the strong joint Ts on the side portion 1d of the drip bag 1A, the entire periphery of the opening shape of the bag body 10 is supported by the hooking member 20, so that the drip bag can be opened as described later. The drip bag 1A can maintain the shape of the opening before the pouring even after the pouring. In addition, since the folding line L2 is formed adjacent to the strong joint Ts, the hooking members 20 on the front and back can be easily opened at the folding line L2. Therefore, the drip bag 1A can easily have an opening shape in which the bag body 10 is wide open in a cylindrical shape.

The strong joint Ts can be formed by ultrasonically joining the hooking members facing each other with the bag body 10 interposed therebetween, or by locally applying heat and pressure with a heating head.

(How to use the drip bag)
As a method for using the drip bag 1A, first, the hooking portions 22 are raised from the bag body 10, and as shown in FIG. are superimposed on each other, and the hooking portions 22 superimposed on the front and back of the bag body 10 are pulled in opposite directions as indicated by the arrows in the figure. As a result, the tensile force concentrates on the upper side portion 11a of the bag body 10 near the folding line L3, and the weak joint portion of the upper side portion 11a opens from the vicinity of the folding line L3. , and the bag body 10 opens in a rectangular shape. After the bag body 10 is opened, the recess 23 at the lower end of the hooking portion 22 of the drip bag 1A is hooked to the upper end wall of the cup 100 as shown in FIG. Then, hot water is poured from the opening 12 of the bag body 10 to obtain the coffee extract in the cup 100.例文帳に追加

The drip bag 1A is supported by a hooking member 20 around the opening 12 of the bag body 10 . In addition, the hooking member 20 is formed into a cylindrical shape by the strong joint Ts, and the side portions 21c are formed into folds. is opened like a prism, and by hooking the recessed part 23 to the opening wall of the cup 100, the shape of the opening of the hooking member 20 opened like a prism is stabilized. Therefore, even after pouring hot water into the drip bag 1A, the opening shape of the drip bag 1A before pouring can be maintained.

(Manufacturing method of drip bag)
As a method of manufacturing the drip bag 1A, first, as shown in FIG. A drip bag manufacturing sheet 40A is prepared. In this case, the adhesion area S between the water-permeable filter sheet 41 and the hanging member 20 is the area shown as the adhesion area S in FIG. In FIG. 4, this sticking area S is shown at the uppermost latching member 20 in the figure. In addition, in FIG. 4, a rectangular area surrounded by a two-dot chain line is an area used for manufacturing one drip bag.

Next, as shown in FIG. 5A, the drip bag-manufacturing sheet 40A is folded in two at the position of the crease of the side edge portion 21c of the hooking member of the drip bag 1A, and both sides of the drip bag-manufacturing sheet 40A in the longitudinal direction are folded. By overlapping the sides and welding the longitudinal side portions together (vertical sealing), a joint portion Tn that becomes the side portion 11d of the bag body is formed, and the drip bag is located inside the drip bag from the joint portion Tn. A strong joint Ts is formed in the portion. In addition, it is preferable to trim the unnecessary portion 42 of the water permeable and filterable sheet 41 when forming the junction Tn.

Next, as shown in FIG. 5B, the cylindrical body of the drip bag manufacturing sheet 40A thus formed is welded (horizontal seal) in the lateral direction of the cylindrical body and the extraction material 50 is introduced into the bag body 10. As shown in FIG. By alternately repeating the filling of the drip bag 1A, a drip bag in which the upper side portion 11a and the lower side portion 11b of the bag body 10 of the drip bag 1A are connected vertically is manufactured, and this is cut into individual drip bags 1A to form the individual drip bags 1A. obtain. Alternatively, when the upper side portion 11a and the lower side portion 11b of the bag main body 10 are welded together, fusion cutting is also performed at the same time to continuously manufacture the drip bags 1A which are individually separated.

(Modification mode)
The drip bag of the present invention can take various forms.
For example, in the drip bag 1A shown in FIG. 1, the fold line L2 adjacent to the strong joint Ts is formed on both the front and back hooking members 20 of the bag body 10, but the drip bag 1B shown in FIG. Thus, it is not necessary to form the folding line L2 on only one of the hooking members 20 on the front and back of the bag body 10 and not form the folding line L2 on the other. As shown in FIG. 7, according to this drip bag 1B, the side part 1d of the drip bag in the opening shape is bent toward the hooking member side forming the folding line L2. The bag can be set in the cup comfortably.

In the drip bag 1A shown in FIG. 1A, the formation position of the joint portion Tn of the side portion 11d of the bag body 10 and the formation position of the strong joint portion Ts of the side portion 21d of the locking member 20 are the same. They may be overlapped in the width direction, and in this case, as in the drip bag 1C shown in FIG. As the formation region of the strong joint Ts becomes larger, it becomes necessary to increase the time and pressure required for welding. be able to.

The drip bag 1D shown in FIG. 9 has hooking portions 22 similar to those of the drip bag 1A shown in FIG. are joined at a joining portion Tn. In addition, the side portions 21c and 21d protrude from the upper and lower end portions of the hooking member 20, the strong joint portion Ts is formed in the protruding region, and the folding line L2 extends in the vertical direction of the drip bag at the base of the protruding region. formed.

In this drip bag 1D, the upper side portion 11a of the bag body 10 is a fold of the water permeable filter sheet forming the bag body 10, and micro perforations are formed as easy tear lines 13 on the fold. When producing a drip bag with a horizontal automatic filling and packaging machine, the outer shape of the upper side or lower side of the bag body of the drip bag can be designed by trimming. It may be designed in a protruding mountain shape.

As for the method of using the drip bag 1D, the hooking portions 22 on the front and back of the bag body 10 are pulled in mutually opposite directions in the same manner as the drip bag 1A shown in FIG. As a result, the pulling force is concentrated on the upper side portion 11a near the folding line L3, and the micro perforations 13 at this portion are split open. A region sandwiched between the left and right strong joints Ts of the upper side portion 11a of the bag body 10 is opened, and the bag body 10 is opened in a rectangular shape. The drip bag 1D thus opened is hooked on the cup 100 as shown in FIG. This drip bag 1D is also supported by the hooking member 20 on the entire periphery of the opening of the bag body 10, and the shape of the opening of the drip bag 1D is rectangular due to the folding lines L2, L3, and L4. This opening shape is stable even after pouring.

As a method of manufacturing the drip bag 1D, first, as shown in FIG. 11, micro perforations 13 are formed on the water permeable filterable sheet 41 at the upper side of the bag body. Next, a pair of hooking members 20 provided on the front and back of the bag body are arranged so that their upper sides 21a face each other, and are arranged in the longitudinal direction of the water permeable filterable sheet 41 at a pitch equal to the width of the drip bag 1D. They are arranged side by side and adhered to obtain a drip bag manufacturing sheet 40D. In this case, the adhered region between the water permeable filter sheet 41 and the hanging member 20 is the region shown as the adhered region S in FIG. In FIG. 11, this sticking area S is shown on the hooking member on the left side of the page.

Next, as shown in FIG. 12A, the drip bag manufacturing sheet 40D is folded in half at the micro perforations 13 to form a joint portion Tn between the side portions 11c and 11d of the bag body and a strong joint portion Ts adjacent thereto. , and the filling of the extraction material 50 alternately. In this case, the extraction material 50 is filled from the lower side portion 11b of the bag body 10 of the drip bag 1D. Then, as shown in FIG. 12B, a joint portion Tn is formed at the lower side portion 11b of the bag body 10, and the continuously manufactured drip bag 1D is cut into individual drip bags.

Although it is preferable that the drip bag of the present invention is of a mounting type, the shape and arrangement of the hooking portion 22 are not particularly limited. For example, the drip bag 1E shown in FIG. A side portion 11c of the main body 10 is formed with a joint portion Tn by joining the water-permeable and filterable sheets to each other. The hooking members 20 on the front and back of the bag body 10 each have a fold line L5 bent in a V shape on both left and right sides, and a fold line L6 extending from the bending point of the fold line L5 to the side edge of the hook member 20. A pair of hooks 24 that can be lifted from the bag body 10 is provided in the center of the member 20 . The drip bag 1E has a strong joint Ts in the vicinity of the joint Tn of the side portion 11c of the bag body 10, and the upper and lower sides of the drip bag 1E are located closer to the center of the drip bag in the width direction than the strong joint Ts. It has a polygonal line L2 extending in the direction.

A notch 25 for opening the upper end of the drip bag 1E and a perforation 26 continuous therewith are provided on the top of the drip bag 1E.

As a method for using this drip bag 1E, the upper end of the drip bag 1E is torn off from the notch 25 to open it, and the drip bag 1E is pressed so as to be crushed from both sides. As a result, the folding lines L5 and L6 are bent as shown in FIG. 14, the hooking portion 24 protrudes from the surface of the bag body 10, and the folding line L2 adjacent to the strong joint Ts is also bent. has a rectangular opening. Therefore, as shown in the figure, the hooking portion 24 is hooked to the upper end wall of the cup 100, and molten metal is poured from the opening.

This drip bag 1E is also supported by the hooking member 20 on the entire periphery of the opening of the bag body 10, and the shape of the opening of the drip bag is maintained even after pouring molten metal.

The drip bag 1F shown in FIG. 15 is the same as the drip bag 1E shown in FIG. A notch 27 is provided on the side edge of the latching member 20 in the extension of the folding line L6. If only one of the hooking members 20 on the front and back sides of the bag body 10 is provided with the folding line L2 in this manner, the side edge of the hooking member 20 is bent to the side where the folding line L2 is provided, as shown in FIG. Moreover, the provision of the cutouts 27 stabilizes the state in which both sides of the drip bag 1F are pushed in, which is preferable.

The drip bag 1G shown in FIG. 17 is the drip bag 1E shown in FIG. A joint portion Tn of the side portions 11c and 11d of the main body 10 and a strong joint portion Ts of the water-permeable filter sheet are provided. is shown.

Thus, the present invention can take various aspects. Moreover, the different parts of the above-described modes can be combined as appropriate.

In addition, although coffee powder is used as the extraction material in the embodiment described above, the extraction material to be filled in the bag body 10 of the drip bag of the present invention is not limited to coffee powder. Tea leaves such as black tea and green tea, herbal medicines, and the like may be filled.

Furthermore, in each aspect of the drip bag of the present invention, the bag body may not be filled with the extraction material, and the top end of the drip bag may be open so that it can be used as a drip filter. That is, the drip filter is composed of a bag body formed of a water-permeable filterable sheet, and hooking members made of a thin plate-like material provided on two opposing outer surfaces of the bag body. A joint portion in which the water permeable and filterable sheets are joined is provided on the side portion, and the opposing hanging members are joined to each other via the water permeable and filterable sheet on the side portion of the hanging member adjacent to the joint portion. A strong joint portion is provided, and a fold line extending in the vertical direction of the drip bag is provided at a portion adjacent to the strong joint portion on the center side of the drip bag in the width direction from the strong joint portion. For example, when configuring the drip bag 1A shown in FIG. 1 as a drip filter, like the drip filter 2A shown in FIG. 19, the drip bag 1A shown in FIG. Formation of the joint portion at the upper end of the bag body 10 is omitted. FIG. 20 is a perspective view of the drip filter 2A hooked to the cup 100. FIG.

According to the drip filter 2A, the user can obtain an extract by filling the bag main body 10 with a favorite extraction material 50 and pouring hot water therein.

1A, 1B, 1C, 1D, 1E, 1F, 1G Drip bag 1d Side part of drip bag 2A Filter for drip 10 Bag main body 11a Upper side part of bag main body 11b Lower side part of bag main body 11c Side part of bag main body 11d Bag Main body side part 12 Bag body opening part 13 Easy tear line, micro perforation 20 Hooking member 21a Top side part of hooking member 21b Variable part of hooking member 21c, 21d Side side part of hooking member 22 Hook Portion 23 Recess 24 Hook 25 Notch 26 Perforation 27 Notch 40A, 40D Drip bag manufacturing sheet 41 Water permeable filterable sheet 42 Unnecessary portion of water permeable filterable sheet 50 Extraction material 100 Cup A Center line d1 Distance d2 Distance d3 Distance L1, L2, L3, L4, L5, L6 Folded line S Adhesion area between water filtration sheet and hanging member Tn Joint with normal joint strength between water filtration sheets Ts Strong joint W1 Bag Width of body W2 Width of latching member

Claims (8)

A drip bag having a bag body formed of a water-permeable and filterable sheet, retaining members made of a thin plate-like material provided on two opposing outer surfaces of the bag body, and an extraction material filled in the bag body. There is
The hooking member has a hooking part that can be lifted from the bag body, and
(i) On both sides of the drip bag, the sides of the bag body are the joints where the water-permeable and filterable sheets are joined together, and the sides of the hanging members adjacent to the joints face each other. A strong joint where the hanging members are joined together, and a fold line extending in the vertical direction of the drip bag at a portion adjacent to the strong joint on the center side in the width direction of the drip bag from the strong joint. , or
(ii) The side of the bag body on one side of the drip bag is the joint where the water permeable and filterable sheets are joined together, and the other side of the drip bag is the fold of the water permeable and filterable sheet. At one side of the drip bag, the side edge portion of the hooking member adjacent to the joining portion of the side edge of the bag body is joined to the opposing hooking members. and a fold line extending in the vertical direction of the drip bag at a portion adjacent to the strong joint on the center side in the width direction of the drip bag from the strong joint, and the other side of the drip bag. The drip bag does not have a fold line extending in the vertical direction of the drip bag at the side of the hooking member at the portion adjacent to the side. 2. A drip bag according to claim 1, wherein said fold line is formed only on one of the facing engaging members when the sides of the bag body are joints where the water-permeable and filterable sheets are joined together. 3. The drip bag according to claim 1 or 2, wherein the strong joints are formed inside the drip bag from the joints of the sides of the bag body. 4. The drip bag according to any one of claims 1 to 3, wherein the strong joint is partially formed on the side edge of the locking member. 5. The folding line according to any one of claims 1 to 4, wherein the folding line is formed from the upper end to the lower end of the locking member when the side edge of the bag body is the joint where the water-permeable and filterable sheets are joined together. drip bag. 6. The drip bag according to any one of claims 1 to 5, wherein the strong joint portion is formed in a protrusion projecting in the width direction of the hook member from among the side portions of the hook member. 7. The drip bag according to claim 6, wherein the fold line is formed at the base of the protruding portion of the retaining member when the sides of the bag body are joints where the water-permeable and filterable sheets are joined together. A drip filter comprising a bag body formed of a water-permeable filterable sheet and retaining members made of a thin plate-like material provided on two opposing outer surfaces of the bag body,
The hooking member has a hooking part that can be lifted from the bag body, and
(i) On both sides of the drip filter, the sides of the bag body are the joints where the water-permeable and filterable sheets are joined together, and the sides of the hanging members adjacent to the joints are opposed to each other . A fold line extending in the vertical direction of the drip filter is provided at the strong joint where the hooking members are joined together, and at the portion adjacent to the strong joint at the center side of the drip filter in the width direction from the strong joint. or
(ii) The side of the bag body on one side of the drip filter is a joint where the water permeable and filterable sheets are joined together, and the water permeable and filterable sheet is folded on the other side of the drip filter. The crest and the folded crest of the thin plate-shaped material overlap each other , and the side portion of the hooking member adjacent to the joint portion of the side side of the bag body on one side of the drip filter is separated from the hooking members facing each other. is joined, and a fold line extending in the vertical direction of the drip filter at a portion adjacent to the strong joint on the center side in the width direction of the drip filter from the strong joint, and the drip 2. A filter for drip coffee, wherein the hooking member adjacent to the other side of the filter for drip coffee does not have a fold line extending in the vertical direction of the filter for drip coffee.

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