JP7094507B2 - Drip bag - Google Patents

Description

The present invention relates to a drip bag that can be easily drip-type to obtain an extract of coffee, black tea, green tea, Chinese herbal medicine, etc. by hooking it on the upper part of a container such as a cup.

Conventionally, the paper drip method has been widely used as a method of making coffee that makes it possible to easily enjoy authentic coffee. With this paper drip method, several cups of coffee are usually extracted at one time.

On the other hand, in recent years, the number of people living alone has increased, and the number of members of one family has decreased due to the nuclear family and the decline in the birth rate. Therefore, instead of the conventional paper drip method that is based on extracting several cups of coffee, a disposable drip bag aimed at making it easy to extract a cup of coffee is available. It is on the market in various product forms.

For example, in a drip bag in which a bag body made of a thin plate-like material is provided on the front and back surfaces of the bag body having an open upper edge so that the bag body can be raised from the bag body, the front and back hook portions of the bag body are opposed to each other. In order to be able to simultaneously raise the hook and open the upper edge of the bag body by pulling it to, the upper edge of the bag body is easily peeled off and joined, and the upper edge of the bag body is joined. (Patent Document 1), and when a sackable portion is joined to the bag body at the lower portion and the upper end portion is a portion separated from the bag body, the upper end portion of the hang portion. It has been proposed that the bag body and the bag body are detachably joined (Patent Document 2). According to these drip bags, when the lower ends of the front and back hooks of the bag body are pulled in opposite directions, the force is used to open the bag body, and the bag body can be opened.

Japanese Patent Application Laid-Open No. 2008-50021 Japanese Patent No. 5775355

However, in the conventional drip bag, it is not easy to open the upper edge portion of the bag body only by pulling the hooking portions on the front and back sides of the bag body in opposite directions. Even if the upper edge of the bag body can be opened by pulling the hooks on the front and back of the bag body strongly in opposite directions, the contents of the bag body may be scattered at the time of opening.

In order to easily open the upper edge of the bag by pulling the hooks on the front and back of the bag in opposite directions, the joint of the upper edge of the bag must be weakened excessively. .. However, if the upper edge of the bag body is excessively weakened, the bag body may be inadvertently opened and the contents may leak from the bag body.

On the other hand, in the present invention, in a drip bag in which a bag member having a bag that can be raised from the bag body is attached facing the bag body, the contents leak from the bag body carelessly. The bag body can be easily opened by pulling the hooking members facing each other across the bag body so that they do not come out, and the opening work of the bag body and the raising work of the bag body can be performed at the same time. That is the issue.

The present inventor forms an easy-opening line on the upper edge of the bag body, and forms a hooking portion that can be raised from the bag body on a hooking member provided so as to face each other across the bag body. In a drip bag that opens the bag body by pulling the facing hooking portions in opposite directions, the upper portion of the hooking member extends downward from the portion adjacent to the easy-opening line at the center of the width direction of the hooking member. When a central attachment area is formed and a protruding portion that sandwiches the upper central attachment area from the left and right is provided in the bag, the force that pulls the bag is concentrated in the center of the upper edge of the bag body in the width direction. The present invention was completed with the idea that the bag body can be opened with a weak pulling force as compared with the case where there is no protruding portion.

That is, in the present invention, a bag body formed of a water-permeable filterable sheet, a bag member made of a thin plate-like material provided on the outer surfaces of two facing surfaces of the bag body, and an extraction filled in the bag body. A drip bag made of materials
The bag body has an easy split line on the upper edge,
The hooking member has an upper center sticking area extending downward from a portion adjacent to the easy-opening line at the center of the width direction of the bag body as a sticking area to the bag body, and also has an upper center sticking area. It has a hook that is continuous and can be raised from the bag body and is formed.
The hook provides a drip bag having a protruding portion that protrudes upward so as to sandwich the left and right sides of the upper central attachment area.

According to the drip bag of the present invention, when the hooking portions of the hooking members provided on the outer surfaces of the two opposing surfaces of the bag body are pulled in opposite directions, the pulling force is applied through the upper center sticking area. Since it acts intensively on the central portion of the upper edge of the bag body in the width direction, the bag body has no protrusion formed so as to sandwich the upper center attachment area and the upper center attachment area. The pulling force required for the opening of the can be significantly reduced. Therefore, by pulling the hooking portions on the front and back sides of the bag body in the opposite direction, the easy opening line of the bag body can be easily opened, and the contents do not scatter from the bag body when the bag body is opened. Further, it is not necessary to form an easy-to-open line that is easily opened when the bag body is opened, and it is possible to solve the problem that the bag body is inadvertently opened and the contents leak out.

Further, according to the drip bag of the present invention, the bag body is opened by picking up the provocative hooking portions of the facing members across the bag body and pulling them in the opposite directions as they are, and subsequently hooking. Since the stop can be hung on the side wall of the cup, the operation from opening the bag body to hanging the drip bag with the bag body open on the cup can be performed in a continuous operation without changing the drip bag. can. Therefore, the usability of the drip bag is improved.

FIG. 1A is a plan view of the drip bag 1A of the embodiment. FIG. 1B is a perspective view illustrating an opening process of the drip bag 1A of the embodiment. FIG. 1C is a perspective view illustrating an opening process of the drip bag 1A of the embodiment. FIG. 1D is a top view of the drip bag 1A of the embodiment immediately before the opening. FIG. 1E is a top view of the drip bag 1A of the example in the open state. FIG. 2A is a perspective view of the drip bag 1A of the embodiment in which the bag body is opened and is hung on the cup. FIG. 2B is a side view of the drip bag 1A of the embodiment in which the bag body is opened and is hung on the cup. FIG. 3 is a perspective view illustrating different opening methods of the drip bag 1A of the embodiment. FIG. 4 is a plan view (a) of the drip bag 1A of the embodiment and a partial side view (b) of the drip bag 1A in a state of being hooked on the cup. FIG. 5 is a plan view (a) of the drip bag 1A'of the embodiment and a partial side view (b) of the drip bag 1A'in a state of being hooked on the cup. FIG. 6 is a plan view (a) of the drip bag 1A'' of the embodiment and a partial side view (b) of the drip bag 1A'' in a state of being hooked on the cup. FIG. 7 is a plan view of the drip bag 1B of the embodiment. FIG. 8 is a plan view of the drip bag 1C of the embodiment. FIG. 9 is a plan view of the drip bag 1D of the embodiment. FIG. 10 is a plan view of the drip bag 1E of the embodiment. FIG. 11 is a plan view of the drip bag 1F of the embodiment. FIG. 12 is a plan view of the drip bag 1G of the embodiment. FIG. 13 is a plan view of the drip bag 1H of the embodiment. FIG. 14 is a plan view of the drip bag 1I of the embodiment. FIG. 15 is a plan view of the drip bag manufacturing sheet 40A used for manufacturing the drip bag 1A of the embodiment. FIG. 16 is an explanatory diagram of a method for manufacturing a drip bag 1A using a sheet for manufacturing a drip bag. FIG. 17 is a plan view of the drip bag manufacturing sheet 40B used for manufacturing the drip bag 1B of the embodiment. FIG. 18 is a plan view of the drip bag manufacturing sheet 40C used for manufacturing the drip bag 1G of the embodiment. FIG. 19 is a plan view of the drip bag 1X of the comparative example. FIG. 20 is an explanatory diagram of a tensile test method.

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 of drip bag)

1A is a plan view of an unopened drip bag 1A according to an embodiment of the present invention, and FIGS. 1B to 1E are explanatory views of an opening method of a bag body 10 of the drip bag 1A. Further, FIG. 2A is a perspective view of a drip bag 1A in which the bag body 10 is opened and the drip bag 1A is hooked on the cup 100, and FIG. 2B is a side view thereof. The drip bag 1A is formed of two facing outer surfaces of the bag body 10 and the bag body 10, that is, a pair of hooking members 20 provided on the front and back surfaces of the bag body 10.

(Bag body)
The bag body 10 is formed of a water-permeable filterable sheet, and the inside thereof is filled with coffee powder as an extraction material 50.

As the water-permeable filterable sheet forming the bag body 10, various sheets capable of leaching coffee when filled with a predetermined amount of coffee powder and poured with hot water can be used. Generally, the leaching sheet includes, for example, synthetic fibers such as polyester, nylon, polyethylene, polypropylene and vinylon, semi-synthetic fibers such as rayon, and woven fabrics or non-woven fabrics made of natural fibers such as kouzo and mitsumata. Papers such as tea bag base paper such as mixed paper made of Manila hemp, wood pulp, polypropylene fiber, etc. are known, and these can be used in the present invention, but they are disposable after use of the drip bag. Therefore, it is preferable that the water-permeable filterable sheet material contains biodegradable fibers. Examples of the biodegradable fiber include polylactic acid, polybutylene succinate, polyethylene succinate and the like. In addition, in order to impart an appropriate steaming effect to the coffee powder during drip, when producing a water-permeable filterable sheet from these fiber materials, the void ratio of the fiber layer is adjusted so that the coffee powder comes into direct contact with the coffee powder. The layer is "sparse" and the layer that is not in direct contact is "dense", which is a sparse and dense multi-layer structure. In the layer that is in direct contact with coffee powder, the content of hydrophobic fibers is increased and coffee is used. It is preferable to reduce the content of hydrophobic fibers in the layer that is not in direct contact with the powder (Patent No. 3674486).

The bag body 10 is a rectangular flat bag in which the upper side 11a is formed into a ring by folding a water-permeable filter sheet , and the lower side 11b and the left and right side sides 11c and 11d are sealed, and the two facing surfaces thereof. have. An opening perforation 12 is provided on the upper side 11a of the bag body 10 as an easy opening line over the entire width thereof. As the opening perforation 12, it is preferable to form a micro perforation from the viewpoint of facilitating the opening of the perforation.

In the present invention, the upper side 11a may not be folded, but the edges of the facing water-permeable filter sheets may be overlapped to seal the portion to be the upper edge of the bag body with a weak sealing strength. The weak seal 13 at the upper edge of the bag body 10 is not unnecessarily peeled off except by the opening operation, but it is preferable that the seal strength is weaker than the seals on the other sides of the bag body 10 (Fig.). 7). Further, in the present invention, a gusset may be provided on the bottom or side of the bag body 10 as needed.

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

(Hooking member)
The hooking member 20 can be formed by punching a thin plate-shaped material such as paperboard or a plastic sheet. The thin plate-like material is also preferably formed from a biodegradable material such as polylactic acid, polybutylene succinate, or polyethylene succinate from the viewpoint of disposability after use of the drip bag 1A.

In the drip bag 1A of the embodiment shown in FIG. 1A, the hooking member 20 is attached to the bag main body 10 in the area filled with diagonal lines in FIG. That is, the hooking member 20 has an upper center sticking area S1 as a sticking area with the bag main body 10. The upper center attachment area S1 extends downward from a portion adjacent to the easy opening line 12 at the central portion in the width direction of the hooking member 20. Here, the attachment area with the bag body 10 refers to the net portion of the hooking member 20 that is attached to the bag body 10, and there is no limitation on the attachment method, and heat welding or ultrasonic welding is used. , Adhesives, etc. are included. Further, the upper end of the upper center attachment area S1 may overlap the upper side 20a of the hooking member 20 or may be in the vicinity of the upper side 20a. As will be described later, when the front and back hooking portions 23 of the bag body 10 are pulled in opposite directions to open the upper edge portion of the bag body 10, the pulling force is more effectively applied to the upper edge portion of the bag body 10. Distance L2 between the upper end of the upper center attachment area S1 and the upper side 11a of the bag body 10 (when a weak seal 13 is formed on the upper edge of the bag body) from the point of acting intensively on the central part of the bag body (FIG. For 7), the distance from the weak seal 13) is preferably 0 to 2 mm.

On the left and right sides of the upper center attachment area S1, the upper side attachment area S2, which is the attachment area between the hooking member 20 and the bag body 10, is separated from the upper center attachment area S1 and is separated from the upper center attachment area S1. It is formed along the upper edge. Further, on the left and right sides of the upper center attachment area S1, an upper band-shaped portion 21 that cannot be raised from the bag body 10 is formed by including the upper side attachment area S2. The upper band-shaped portion 21 is formed along the upper side 11a of the bag body 10. The upper side attachment area S2 and the upper band-shaped portion 21 are provided from the viewpoint of opening the upper side 11a of the bag body 10 and maintaining the opening shape of the bag body 10 with the drip bag 1A hooked on the cup. Is preferable.

A central portion 25 is formed in the central portion in the width direction of the hooking member 20 below the upper central attachment region S1. The central portion 25 cannot be raised from the bag main body 10 by the central portion central attachment area S3 and the central portion lateral attachment area S4. The central portion central attachment area S3 and the central portion lateral attachment area S4 may be continuous attachment areas. Further, in the present invention, the central portion 25 fixed to the bag body by the sticking area can be omitted, but the opening shape of the bag body 10 is stabilized when the drip bag 1A is hooked on the cup. It is preferable to provide the central portion 25 from the viewpoint of making the center portion 25.

Below the upper lateral attachment area S2, a hooking portion 23 that can be raised from the bag body 10 is formed so as to surround the central portion 25. The hooking portion 23 has a protruding portion 24 protruding upward so as to sandwich both the left and right sides of the upper center attachment area S1. The protruding portion 24 is a characteristic feature of the drip bag of the present invention, and by providing the protruding portion 24 on the hooking member 20, when the hooking portions 23 on the front and back sides of the bag body 10 are pulled in opposite directions. The pulling force is concentrated on the easy-opening line 12 of the bag body adjacent to the upper end of the upper center sticking area S1, and the pulling force required for the opening of the bag body 10 is applied as compared with the case where there is no protruding portion 24. It can be significantly reduced.

The length L5 of the vertically protruding portion 24 of the hooking member 20 (that is, the vertical distance of the hooking member between the upper end 24a of the protruding portion 24 and the upper end of the side side of the hooking portion 23) is the above-mentioned pulling. The vertical distance between the upper end of the hooking member 20 and the base portion 24b of the protruding portion 24 (or the upper end of the hooking member 20 and the hooking member 20) is such that the force is effectively applied by the opening of the bag body 10. It is preferably 30 to 100% (the vertical distance of the hooking member 20 from the upper end of the side surface of the stopping portion 23) (FIG. 1A).

A thin plate-like material is continuous between the hooking portion 23 and the upper center sticking area S1, and a pair of substantially vertical broken lines B3 are formed between the raised portion of the protruding portion 24 and the upper center sticking area S1. It is formed. When the hooking portions 23 on the front and back sides of the bag main body 10 are pulled in opposite directions when the bag main body 10 is opened, if the bent line B3 is formed, the hooking member is bent by the broken line B3 and the hooking portion 23 stands up. However, the pulling force tends to act intensively on the upper center sticking area S1, and the opening of the bag body becomes easy in combination with the formation of the above-mentioned protruding portion 24. The action of concentrating the pulling force on the upper center attachment area S1 becomes more effective by forming the polygonal lines B4 and B6, which will be described later, or by forming the polygonal lines B5 and B6, in addition to the formation of the polygonal line B3. In the present invention, the polygonal line can be formed by perforations, half-cuts, streaks, and the like.

More specifically, as shown in FIG. 4A, the formation direction of the pair of polygonal lines B3 on the left and right sides of the upper center attachment area S1 is such that the distance between the pair of polygonal lines B3 in the width direction of the hooking member is from the upper part. The distance L4b at the lower end of the polygonal line B3 is narrower than the interval L4t at the upper end, and the pair of polygonal lines B3 are formed in an inverted C shape. When the bag body 10 is opened and the drip bag 1A is hung on the cup 100 by forming the pair of polygonal lines B3 on both sides of the upper center attachment area S1 in an inverted C shape in this way, FIG. 4B is shown. As shown in the above, the side wall of the cup 100 can be firmly pressed by the hooking portion 23, which is preferable. On the other hand, when the pair of folding lines B3 are formed in parallel in the vertical direction of the hooking member as in the drip bag 1A'shown in FIG. 5A, the bag body 10 is opened and the drip bag 1A'. Is hung on the cup 100, hot water is poured into the bag body 10 from the opening, and when the inside of the bag body 10 becomes heavy, it is hooked as shown in FIG. The portion 23 tends to slide up from the side wall of the cup 100 in the direction of the arrow. Further, as shown in FIG. 6 (b), as shown in FIG. 6 (a), when the distance between the pair of polygonal lines B3 becomes a C-shape wider at the lower end than the upper end of the polygonal line B as in the drip bag 1A'' shown in FIG. 6 (a). In addition, the hooking portion 23 of the drip bag 1A'' is more likely to slide up from the side wall of the cup 100 in the direction of the arrow, and the hooking portion 23 may come off from the side wall of the cup 100.

The hooking portion 23 has inverted L-shaped portions 23a on both left and right sides of the upper portion of the hooking portion 23, and has a U-shaped portion 23b continuous with the left and right inverted L-shaped portions 23a at the lower portion thereof ( FIG. 1A). The presence of the inverted L-shaped portion 23a facilitates hooking the hooking portion 23 to the side wall of the cup 100, and the presence of the U-shaped portion 23b connecting the left and right inverted L-shaped portions 23a. , The form in which the hooking portion 23 is hooked on the side wall of the cup 100 can be stabilized.

The inverted L-shaped portions 23a on the left and right sides of the upper part of the hooking portion 23 each have a polygonal line B4 along the side side of the hooking portion 23. Further, the U-shaped portion 23b has a pair of vertical polygonal lines B6 in the lower central portion of the hooking portion 23. The presence of these polygonal lines B4 and B6 and the above-mentioned polygonal line B3 causes a pair of hooking portions 23 on the front and back sides of the bag body 10 to open the bag body 10, and pulls them in opposite directions. As shown in 1C, the polygonal line B3 bends on both sides of the upper center attachment area S1, and the portion of the hooking portion 23 adjacent to the upper center attachment area S1 stands up against the surface of the upper center attachment area S1. Therefore, the pulling force tends to be concentrated on the central portion of the upper edge of the bag body 10 in the width direction of the bag body via the upper center attachment area S1, and the polygonal lines B4 and B6 in the hooking portion 23 are bent. The hooking portion 23 is less likely to be twisted. As a result, the force for pulling the hooking portion 23 surely acts on the central portion of the easy-opening line (perforation 12) of the bag body 10 in the width direction of the bag body, and the bag body 10 is easily opened.

In the present invention, instead of the polygonal line B4, a pair of polygonal lines B5 may be formed on both sides of the lower portion of the hooking portion 23 as in the drip bag 1C shown in FIG. The formation of the polygonal line B5 also has the same effect as the formation of the polygonal line B4.

On the other hand, in the drip bag 1A, a pair of polygonal lines B7 are formed in the central portion 25 of the hooking member 20 in the vertical direction of the hooking member 20. When the polygonal line B7 is formed, it becomes easy for the bag body 10 to maintain the columnar opening shape after the bag body 10 is opened.

In the present invention, the polygonal lines B3, B4, B5, B6, and B7 are provided as necessary depending on the stiffness of the thin plate-shaped material constituting the hooking member 20, the strength of the base paper, and the like.

(How to use the drip bag)
As a method of using the drip bag 1A, first, the central portion 23c of the U-shaped portion 23b of the hooking portion 23 provided on the front and back hooking members 20 of the bag body 10 is grasped with both hands, and the directions are opposite to each other. Pull to (Fig. 1B). When further pulled, the hooking member 20 is bent so that the hooking portion 23 stands up against the upper center attachment area S1 at the broken line B3, and the broken lines B4 and B6 are also bent (FIG. 1C). The central portions of the upper sides 11a of the front and back hooking members 20 of 10 begin to separate from each other (FIG. 1D), and the opening of the bag main body 10 begins when the opening perforation 12 breaks at the central portion of the upper side 11a of the bag main body 10. After that, the upper side 11a of the bag body 10 quickly opens over its entire width (FIG. 1E). In FIG. 1E, reference numeral 50 represents the extraction material 50 filled in the bag body 10.

Next, while holding the central portion 23c of the U-shaped portion 23b of the drip bag 1A in which the bag body 10 is open with both hands, the drip bag 1A is moved onto the cup 100, and the hook portion 23 is moved to the cup 100. It is hooked on the side wall (FIG. 2A, FIG. 2B). Therefore, hot water is poured from the opening 14 of the bag body 10 to obtain a coffee extract in the cup 100.

As a method of opening the bag body 10, as shown in FIG. 3, the hooking portions 23 of the hooking members 20 on the front and back sides of the bag body 10 are folded so that the left and right side sides 23d of the hooking portions 23 overlap each other. The overlapped portions may be pulled in opposite directions. By pulling the hook portion 23 in this way, the perforation starts to break from the central portion of the upper side 11a of the bag body 10, the break spreads to the entire width of the opening of the bag body 10, and the bag Honda 10 is expanded to the full width. It is possible to open it.

However, as shown in FIGS. 2A and 2B, when the drip bag 1A is hooked on the cup 100, the U-shaped portion 23b presses the side wall of the cup 100 in a state where the hooking portion 23 is not folded. Therefore, when the hooking portion 23 is folded to open the drip bag 1A as shown in FIG. 3, it is necessary to unfold the folded hooking portion 23 and hook it to the cup. Therefore, it becomes impossible to perform the process from the opening of the bag body 10 to the hooking on the cup 100 by continuous operation.

(Manufacturing method of drip bag)
As a method for manufacturing the drip bag 1A, as shown in FIG. 15, a drip bag manufacturing sheet 40A is prepared in which hooking members 20 are arranged and attached to a long water-permeable filterable sheet 41 at predetermined intervals. In the figure, the area sandwiched between the adjacent two-dot chain lines is the area used for manufacturing one drip bag.

In manufacturing the drip bag manufacturing sheet 40A, it is preferable to form a long perforation 42, which is a perforation 12 for opening the drip bag 1A, on the long water-permeable sheet 41 in advance.

Next, the hooking member 20 and the water-permeable filterable sheet 41 are combined, and the hooking member 20 and the water-permeable filterable sheet 41 are bonded in the attachment area filled with diagonal lines in FIG. 1A. The attachment area filled with the diagonal lines on the hooking member 20 at the top of FIG. 15 is shown.

When the hooking member 20 and the water-permeable filterable sheet 41 are attached by heat-welding the water-permeable filterable sheet 41 and the hooking member 20 by applying a heating head from the water-permeable filterable sheet 41 side. It is preferable to apply a heating head to the portion of the bag body 10 that becomes the opening start portion together with the original attachment area to form a fragile portion on the water -permeable filterable sheet 41. The formation of this fragile portion is preferable because the force required for opening the bag body 10 can be particularly reduced.

The drip bag 1A can be continuously manufactured by using the drip bag manufacturing sheet 40A in the filling and packaging machine. In this case, as shown in FIG. 16, the drip bag manufacturing sheet 40A is folded in half so that both sides in the longitudinal direction overlap each other, and the sides in the longitudinal direction are welded (vertical seal) to form a tubular body. It is formed to form the lower side 11b of the bag body of the drip bag 1A. Next, the side sides 11c and 11d of the bag body 10 of the drip bag 1A are connected vertically by alternately repeating welding (horizontal sealing) of the tubular body in the lateral direction and filling of the contents into the bag body 10. A drip bag is manufactured and separated into individual drip bags 1A to obtain individual drip bags 1A. Alternatively, fusing is also performed at the same time when the side sides 11c and 11d of the bag body 10 are welded, and the individually separated drip bags 1A are continuously manufactured.

When the upper side 11a of the bag body 10 is not folded, and as shown in FIG. 7, a weak seal 13 is formed on the upper edge b of the bag body 10 and the lower side 11b of the bag body 10 is folded. As shown in FIG. 17, is a drip bag manufacturing sheet 40B to which the hooking member 20 is attached so that the upper band-shaped portion 21 of the hooking member 20 is aligned with both sides of the long water-permeable filterable sheet 41. Can be used.

In this case, since the vertical seal formed on the drip bag manufacturing sheet 40B is the upper edge of the bag body 10 of the drip bag 1A, the vertical seal is weaker than the horizontal seal, but the seal portion is inadvertently torn. , It is preferable to form the contents to the extent that they do not spill.

(Deformation mode)
The drip bag of the present invention can take various aspects other than the above-mentioned drip bags 1A, 1B and 1C.
For example, the shape of the hooking portion 23 is such that the drip bag 1D shown in FIG. 9 has inverted L-shaped portions 23a on both the left and right sides of the hooking portion 23, but the U-shaped portion connecting the lower portions thereof. The shape may be such that 23b is omitted. In this drip bag 1D, as shown in FIG. 3, the bag 23 can be folded and pulled, the bag body 10 can be opened, and then the bag 23 can be hooked to the cup without changing hands.

Even if the protruding portion 24 of the hooking portion 23 does not reach the upper side 20a of the hooking member 20 and the upper strip-shaped portion 21 is continuous over the entire width of the hooking member 20 as in the drip bag 1E shown in FIG. good. In this case, the upper center attachment area S1 and the upper side side attachment area S2 may be continuous. When the bag body 10 is opened by making the upper band-shaped portion 21 continuous over the entire width of the hooking member 20, and the drip bag 1E is hooked on the cup, the opening diameter of the cup is large, so that the center of the upper part of the bag body is large. Even if the portion is strongly pulled by the hook portion 23, it is possible to prevent the opening shape of the drip bag from being flattened.

When the upper band-shaped portion 21 is continuously formed over the entire width of the bag member 20, the upper lateral attachment region S2 may be formed intermittently as in the drip bag 1F shown in FIG.

Like the drip bag 1G shown in FIG. 12, the upper band-shaped portion 21 of the front and back hooking members of the bag body 10 may be continuous. This drip bag 1G can be manufactured by using the drip bag manufacturing sheet 40C shown in FIG. According to the drip bag manufacturing sheet 40C, since the front and back hooking members 20 of the bag body are continuous, the bagging member 20 is less likely to be displaced during the manufacturing of the drip bag manufacturing sheet 40C, which is preferable. Further, when the drip bag 1G is manufactured using the drip bag manufacturing sheet 40C, a tubular body of the drip bag manufacturing sheet 40C is formed by a vertical seal, and then the horizontal seal of the tubular body and the contents are formed. Filling is repeated alternately, but it is preferable that the upper edge of the bag body of the drip bag 1G manufactured by one horizontal seal is a weak seal and the bottom is a strong seal 13. Such a seal can be performed, for example, by using the ultrasonic welding and fusing apparatus described in JP-A-2017-19513.

As for the shape of the protruding portion 24 of the hooking portion 23, the upper end 24a of the protruding portion 24 reaches the upper side 20a of the hooking member 20 and the base portion 24b of the protruding portion 24 is formed as in the drip bag 1H shown in FIG. The contour of the protruding portion 24 between the upper end 24a of the protruding portion 24 and the base portion 24b is formed linearly with the upper end of the side side of the hooking portion 23, and the gap between the protruding portion 24 and the upper side 11a of the bag body 10 is formed. The upper band-shaped portion 21 may be formed in a triangular shape so as to fill it. Alternatively, the upper strip 21 may be made as small as possible as in the drip bag 1I shown in FIG. 14, so that the upper strip 21 coincides with the upper lateral attachment area S2. Further, when a highly rigid sheet for forming the bag body 10 is used, the opening is wide after the opening of the bag body 10 even if the upper side attachment area S2 is omitted. The open opening shape can be maintained.

The deformed portions of the drip bag described above can be combined as appropriate.

The drip bag in which the bag body 10 is filled with coffee powder has been described above, but the extraction material 50 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, Chinese herbs and the like may be filled.

Hereinafter, the present invention will be specifically described based on examples.
Examples 1 and 2, Comparative Example 1
(1) Preparation of drip bag As Example 1, the drip bag 1A shown in FIG. 1A was prepared. In this case, as the water-permeable filterable sheet forming the bag body 10, a non-woven fabric (manufactured by Daiki Shoji Co., Ltd.) in which a wet non-woven fabric made of short fibers mainly composed of polyester and a melt blown non-woven fabric made of polypropylene are integrated by partial thermal pressure bonding. ) Was used so that the opening perforation 12 was located at the folded mountain portion on the upper side of the bag body 10. The bag body 10 is a flat bag having a width W1 of 80 mm and a height H1 of 100 mm.

The hooking member 20 was formed from a paperboard obtained by laminating polypropylene on a cup base paper to the following dimensions.
Height of hooking member H2: 42 mm,
Width of hook member W2: 62 mm,
Length of protruding part in the vertical direction of the hooking member L5: 14 mm,
Spacing between the upper ends of the pair of polygonal lines B3 L4t: 10 mm,
Spacing between the lower ends of the pair of polygonal lines B3 L4b: 4 mm

As Example 2, a drip bag 1E similar to that of Example 1 was produced except that the length L5 of the protruding portion 24 was 5 mm (FIG. 10).

As Comparative Example 1, a drip bag 1X similar to that of Example 1 was produced except that a protruding portion was not formed (FIG. 19).

(2) Pull test As shown in FIG. 20, an adhesive tape is attached to the central portion 23c of the U-shaped portion of the front and back hooking portions 23 of the bag body of the drip bag of each example and the comparative example, and the handle is attached. The number was 30, and the handle 30 was sandwiched between the jigs of the tensile tester and pulled in opposite directions, and the elongation amount and the tensile strength of the gripping interval L10 were measured. In this tensile test, the tensile strength initially increases as the amount of elongation increases, but when the opening perforation 12 of the bag body is cleaved, the tensile strength suddenly becomes zero. Therefore, the tensile strength immediately before the cleavage was defined as the tensile strength at the time of cleavage. The tensile test was repeated 5 times for each Example and Comparative Example, and the average tensile strength at the time of opening of the opening perforation 12 was obtained. The results are shown below.

Example 1: Tensile strength 1.85N
Example 2: Tensile strength 3.61N
Comparative Example 1: Tensile strength 5.11N

From this result, it was confirmed that forming the protruding portion in the hooking portion reduces the tensile strength required for the opening of the bag body.

1A, 1A', 1A'', 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1I Drip bag 10 Bag body 11a Upper side 11b Lower side 11c Side side 11d Side side 12 Opening perforation, easy opening line 13 Weak Seal 14 Opening 20 Hanging member 20a Upper side of hanging member 21 Upper band-shaped part 23 Hanging part 23a Inverted L-shaped part 23b U-shaped part 23c Central part of U-shaped part 23d Side side of hooking part 24 Projection Part 24a Upper end of protruding part 24b Base of protruding part 25 Central part 30 Handle 40A, 40B, 40C Sheet for manufacturing drip bag 41 Long water-permeable filterable sheet 42 Perforation 50 Extraction material 100 Cup B3 Upper center attachment area Bag line between the bag and the bag B4, B5, B6 Bag line B7 Center bag line L2 Distance between the upper end of the upper center attachment area and the upper side of the bag body L4t Between the upper ends of the pair of bag lines B3 Spacing L4b Spacing between the lower ends of the pair of bent lines B3 L5 Length of the protruding portion in the vertical direction of the hooking member L10 Gripping spacing S1 Upper center sticking area S2 Upper side sticking area S3 Central part Central sticking area S4 Central part Side attachment area W1 Width of bag body W2 Width of bag member H1 Height of bag body H2 Height of bag member

Claims (8)

A bag body made of a water-permeable filterable sheet, a bag made of a thin plate-like material provided on the outer surfaces of two facing surfaces of the bag body, and a drip bag made of an extract material filled in the bag body. There,
The bag body has an easy split line on its upper edge,
The hooking member has an upper center sticking area extending downward from a portion adjacent to the easy-opening line at the center of the width direction of the bag body as a sticking area to the bag body, and also has an upper center sticking area. It has a hook that is continuous and can be raised from the bag body and is formed.
The hook is a drip bag that has a protruding part that can be raised from the bag body and protrudes upward so as to sandwich the left and right sides of the upper center sticking area. The drip bag according to claim 1, wherein the hooking member has a broken line between the upper center sticking area and the protruding portion of the hooking portion. The drip bag according to claim 1 or 2, wherein the hook member has an upper side attachment area attached to the bag body on both sides of the upper center attachment area. The drip bag according to claim 3, wherein the upper central attachment area and the upper side attachment area are separated from each other. The drip bag according to any one of claims 1 to 4, wherein the bag member has a central portion formed below the upper central attachment area so as not to be raised from the bag body at the center portion in the width direction of the bag member. The drip bag according to any one of claims 1 to 5, wherein the upper end of the protruding portion of the hooking portion reaches the upper side of the hooking member. The drip bag according to any one of claims 1 to 6, wherein the bag member has an upper band-shaped portion along the upper side of the bag body that cannot be raised from the bag body. The drip bag according to claim 7, wherein the upper band-shaped portion extends over the entire width of the hooking member.

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