JP2019187631A - Drip bag - Google Patents

Abstract

To easily open a bag body having a hooking part which can be pulled up from the bag body on a surface and a back surface of the bag body by pulling the hooking parts on the surface and the back surface of the bag body in opposite directions.SOLUTION: A drip bag 1A includes a bag body 10 formed of a water permeable filtering sheet, a hooking member 20 made of a thin plate-like material provided on outer surfaces of two opposing faces of the bag body 10, and an extraction material 50 filled in the bag body 10. The bag body 10 has an easy-open cutting line 12 at an upper edge part. The hooking member 20 includes an upper part central adhesion region S1 which extends downward from a part adjacent to the easy-open cutting line 12 in a central part in a width direction of the hooking member 20 as an adhesion region to the bag body 10 and a hooking part 23 formed in a manner to be pulled up from the bag body 10, and the hooking part 23 has a protruding part 24 protruded upward in a manner to sandwich both right and left sides of the upper part central adhesion region S1.SELECTED DRAWING: Figure 2A

Description

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

  Conventionally, a paper drip method has become widespread as a method of putting coffee that makes it easy to enjoy authentic coffee. In this paper drip method, usually a few cups of coffee are extracted at a time.

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

  For example, in a drip bag in which a latching portion made of a thin plate material is provided on the front and back of the bag body whose upper edge is open so that it can be raised from the bag body, the latching portions on the front and back of the bag body are opposite to each other. The upper edge of the bag body can be easily peeled off and the upper edge of the hook part can be easily peeled off. Is attached to the bag main body (Patent Document 1), and the upper end portion of the hooking portion is connected to the bag main body at the lower portion and the upper end portion is a portion away from the bag main body. It has been proposed that the bag body and the bag body be joined in a peelable manner (Patent Document 2). According to these drip bags, when the lower ends of the hook portions on the front and back of the bag body are pulled in opposite directions, the force is used for opening the bag body, and the bag body can be opened.

JP2008-50021 Japanese Patent No. 5775355

  However, in the conventional drip bag, it is not easy to open the upper edge of the bag body simply by pulling the hook portions on the front and back of the bag body in opposite directions. Even if the upper edge portion of the bag body can be opened by strongly pulling the hook portions on the front and back of the bag body 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 body by pulling the hooks on the front and back of the bag body in opposite directions, the joint of the upper edge of the bag body must be excessively weakened. . However, if the bonding of the upper edge of the bag body is excessively weakened, the bag body opens carelessly, and the content leaks from the bag body.

  On the other hand, in the drip bag in which the latching member having the latching portion that can be raised from the bag main body is attached facing the bag main body, the contents are inadvertently leaked from the bag main body. The bag body can be easily opened by pulling the latching members facing each other across the bag body in the opposite direction so that the bag body can be opened and the latch part can be raised simultaneously. This is the issue.

  The inventor forms an easy-cleavage line at the upper edge of the bag body, and forms a latching portion that can be raised from the bag body on the latching member provided facing the bag body. In a drip bag that opens a bag body by pulling opposing latching portions in opposite directions, the upper portion of the latching member extends downward from a portion adjacent to the easy-cleavage line at the center in the width direction of the latching member. When the center sticking area is formed, and the protruding part that sandwiches the upper center sticking area from the left and right is provided in the latching part, the force pulling the latching part is concentrated on the center part in the width direction of the upper edge of the bag body The present invention was completed by conceiving 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, the present invention relates to a bag body formed from a water-permeable filterable sheet, a latch member made of a thin plate-like material provided on the two outer surfaces facing the bag body, and an extraction filled in the bag body. A drip bag made of material,
The bag body has an easy-cleavage line at the upper edge,
The latching member has an upper central pasting area extending downward from a portion adjacent to the easy-cleavage line at the central portion in the width direction as the pasting area with the bag body, and an upper central pasting area; It has a latching part that is continuous and can be raised from the bag body,
A latch part provides the drip bag which has the protrusion part which protruded upwards so that the both sides of the upper center sticking area may be pinched | interposed.

  According to the drip bag of the present invention, when the hooking portions of the hooking members provided on the two outer surfaces facing each other in the bag body are pulled in opposite directions, the pulling force is passed through the upper center sticking area. Since it acts intensively in the width direction center part of the upper edge of the bag body, the bag body as compared with the case where there is no upper center sticking area and no protruding part formed so as to sandwich the upper center sticking area The pulling force required for the opening can be significantly reduced. Therefore, when the hook portions on the front and back of the bag body are pulled in the opposite direction, the easy-cleavage line of the bag body can be easily opened, and the contents are not scattered from the bag body when the bag body is opened. In addition, it is not necessary to form an easy-cleavage line that is easily cleaved when the bag body is opened, so that the problem that the bag body opens carelessly and the contents leak out can be solved.

  Furthermore, according to the drip bag of the present invention, the hook body that can be caused by the hook members facing each other across the bag body is picked up and pulled in the opposite direction as it is to open the bag body, and subsequently the hook body. Since the stopper can be hung on the side wall of the cup, the operation from opening the bag body to the operation of hanging the drip bag with the bag body open on the cup can be performed in a continuous operation without changing the drip bag. it 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 the opening process of the drip bag 1A of the embodiment. FIG. 1C is a perspective view for explaining 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 opening. FIG. 1E is a top view of the drip bag 1A of the embodiment in the opened state. FIG. 2A is a perspective view of the drip bag 1A of the embodiment in which the bag body is opened and is hooked on the cup. FIG. 2B is a side view of the drip bag 1A of the embodiment in which the bag main body is opened and is hooked on the cup. FIG. 3 is a perspective view illustrating a different opening method of the drip bag 1A of the embodiment. FIG. 4: is the top view (a) of the drip bag 1A of an Example, and the partial side view (b) of the state which latched it on the cup. FIG. 5: is the top view (a) of drip bag 1A 'of an Example, and the partial side view (b) of the state which latched it on the cup. FIG. 6: is the top view (a) of drip bag 1A '' of an Example, and the partial side view (b) of the state which latched it 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 a drip bag manufacturing sheet 40A used for manufacturing the drip bag 1A of the embodiment. FIG. 16 is an explanatory diagram of a method of manufacturing the drip bag 1A using the drip bag manufacturing sheet. FIG. 17 is a plan view of a drip bag manufacturing sheet 40B used for manufacturing the drip bag 1B of the embodiment. FIG. 18 is a plan view of a drip bag manufacturing sheet 40C used for manufacturing the drip bag 1G of the embodiment. FIG. 19 is a plan view of a drip bag 1X of a 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 numerals indicate the same or equivalent components.
(Overall structure of drip bag)

  FIG. 1A is a plan view of an unopened state of a drip bag 1A according to an embodiment of the present invention, and FIGS. 1B to 1E are explanatory views of a method for opening a bag body 10 of the drip bag 1A. 2A is a perspective view of a state in which the drip bag 1A having the bag body 10 opened is hooked on the cup 100, and FIG. 2B is a side view thereof. The drip bag 1 </ b> A is formed by a pair of hooking members 20 provided on the bag body 10 and the two outer surfaces of the bag body 10 facing each other, that is, on the front and back 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 the extraction material 50.

  As the water-permeable filterable sheet forming the bag body 10, various materials can be used that are capable of brewing coffee when filled with a predetermined amount of coffee powder and poured. In general, as the sheet for leaching, for example, synthetic fibers such as polyester, nylon, polyethylene, polypropylene, vinylon, semi-synthetic fibers such as rayon, woven fabrics or nonwoven fabrics composed of natural fibers such as mulberry, Mitsumata alone or in combination, Papers such as tea bags base paper, such as mixed paper made of Manila hemp, wood pulp, polypropylene fiber, etc. are known, and these can also be used in the present invention, but the point of disposal after use of the drip bag Therefore, it is preferable to contain biodegradable fibers in the water-permeable filterable sheet material. Examples of the biodegradable fiber include polylactic acid, polybutylene succinate, and polyethylene succinate. Moreover, in order to be able to impart an appropriate steaming effect to the coffee powder at the time of drip, when manufacturing a water-permeable filterable sheet from these fiber materials, it is in direct contact with the coffee powder by adjusting the porosity of the fiber layer. The layer that is in direct contact with the coffee powder is increased in the density of the multi-layered structure in which the layer to be in contact is “sparse” and the layer that is not in direct contact is “dense”. In the layer not in direct contact with the powder, it is preferable to reduce the content of hydrophobic fibers (Japanese Patent No. 3694486).

  The bag body 10 is a rectangular flat bag in which an upper side 11a is a ring made of a permeable mountain of a water-permeable filtration sheet, and a lower side 11b and left and right side sides 11c and 11d are sealed, and has two opposing surfaces. is doing. An opening perforation 12 is provided on the upper side 11a of the bag body 10 as an easy-cleavage line over its entire width. As the opening perforation 12, it is preferable to form a micro perforation from the viewpoint of facilitating opening of the perforation.

  In the present invention, the upper edge 11a may not be folded, and the edges of the water-permeable filter sheets facing each other may be overlapped to seal the upper edge of the bag body with a weak seal strength. The weak seal 13 at the upper edge of the bag body 10 does not peel unnecessarily except for the opening operation, but it is preferable to make the seal strength weaker than the seal on the other side of the bag body 10 (see FIG. 7). Moreover, in this invention, you may provide a gusset in the bottom part and side part of the bag main body 10 as needed.

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

(Hanging member)
The retaining member 20 can be formed by punching a thin plate material such as paperboard or plastic sheet. The thin plate-like material is also preferably formed from a biodegradable material such as polylactic acid, polybutylene succinate, polyethylene succinate, etc., from the point of disposal after using the drip bag 1A.

  In the drip bag 1A of the embodiment shown in FIG. 1A, the hooking member 20 is stuck to the bag body 10 in the region filled with diagonal lines in FIG. That is, the latch member 20 has an upper center sticking area S <b> 1 as a sticking area with the bag body 10. This upper center sticking area S <b> 1 extends downward from a portion adjacent to the easy-cleavage line 12 at the center in the width direction of the retaining member 20. Here, the sticking area with the bag body 10 refers to the net part of the hooking member 20 that is stuck to the bag body 10, and there is no limitation on the sticking method, and thermal welding and ultrasonic welding. , Including adhesives. Moreover, the upper end of upper center sticking area | region S1 may overlap with the upper side 20a of the latching member 20, and may exist in the vicinity of the upper side 20a. As will be described later, when the upper edge of the bag body 10 is opened by pulling the hook portions 23 on the front and back of the bag body 10 in opposite directions, the upper edge of the bag body 10 is more effectively used. Distance L2 between the upper end of the upper center sticking area S1 and the upper side 11a of the bag body 10 (when the weak seal 13 is formed on the upper edge of the bag body (see FIG. 7), the distance from the weak seal 13) is preferably 0 to 2 mm.

  On both the left and right sides of the upper center sticking area S1, an upper side sticking area S2, which is a sticking area between the retaining member 20 and the bag body 10, is separated from the upper center sticking area S1. It is formed along the upper edge. Moreover, the upper belt | band | zone-like part 21 which cannot be caused from the bag main body 10 by including upper side sticking area S2 is formed in the right-and-left both sides of upper center sticking area S1. The upper band portion 21 is formed along the upper side 11 a of the bag body 10. The upper side sticking area S2 and the upper belt-like portion 21 are provided from the point that the upper side 11a of the bag body 10 is opened and the opening shape of the bag body 10 is maintained in a state where the drip bag 1A is hooked on the cup. Is preferred.

  A central portion 25 is formed in the central portion in the width direction of the retaining member 20 below the upper central sticking area S1. The center part 25 cannot be caused from the bag body 10 by the center part center sticking area S3 and the center part side sticking area S4. In addition, it is good also considering the center part center sticking area S3 and the center part side sticking area S4 as the continuous sticking area. Moreover, in this invention, although the center part 25 currently fixed to the bag main body by the sticking area | region can also be abbreviate | omitted, the opening shape of the bag main body 10 in the state which latched the drip bag 1A on the cup is stabilized. It is preferable to provide the center part 25 from the point made to do.

  A latching portion 23 that can be raised from the bag body 10 is formed below the upper side sticking area S2 so as to surround the central portion 25. The latch part 23 has the protrusion part 24 which protruded upwards so that both the right and left sides of upper center sticking area S1 may be pinched | interposed. The protruding portion 24 is a characteristic feature of the drip bag of the present invention. By providing the protruding portion 24 on the hooking member 20, the hook portions 23 on the front and back of the bag body 10 are pulled in opposite directions. The pulling force is concentratedly applied to the easy-cleavage line 12 of the bag body adjacent to the upper end of the upper center sticking area S1, and the pulling force required for opening the bag body 10 is larger than when there is no protruding portion 24. It can be significantly reduced.

  The length L5 of the projecting portion 24 in the vertical direction of the latching member 20 (that is, the distance in the vertical direction of the latching member between the upper end 24a of the projecting portion 24 and the upper end of the side of the latching portion 23) is the tension described above. From the point that the force is effectively applied to the opening of the bag body 10, the vertical distance of the latching member 20 between the upper end of the latching member 20 and the base 24 b of the protruding portion 24 (or the upper end of the latching member 20 and the latch 30 to 100% of the distance in the vertical direction of the latching member 20 to the upper end of the side of the stopper 23 is preferable (FIG. 1A).

  A thin plate-like material is continuous between the latching portion 23 and the upper center sticking area S1, and a pair of broken lines B3 in a substantially vertical direction is formed between the portion where the protruding portion 24 is caused and the upper center sticking area S1. Is formed. When the hook portions 23 on the front and back sides of the bag body 10 are pulled in opposite directions when the bag body 10 is opened, if the fold line B3 is formed, the hook member is bent at the fold line B3 and the hook portion 23 stands up. Then, the pulling force tends to act intensively on the upper center sticking region S1, and the opening of the bag body is facilitated in combination with the formation of the protruding portion 24 described above. The action of concentrating the pulling force on the upper center sticking area S1 becomes more effective by forming broken lines B4 and B6, which will be described later, or forming broken lines B5 and B6, in addition to forming the broken line B3. In the present invention, the broken line can be formed by perforation, half-cutting, muscle pushing, or the like.

  More specifically, as shown in FIG. 4 (a), the formation direction of the pair of broken lines B3 on both the left and right sides of the upper center sticking area S1 is such that the distance between the pair of broken lines B3 in the hooking member width direction is from the top. The distance L4b at the lower end of the fold line B3 is narrower than the distance L4t at the upper end, and the pair of fold 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 making the pair of broken lines B3 on both sides of the upper center sticking area S1 into an inverted C shape as shown in FIG. As shown in FIG. 5, the side wall of the cup 100 can be firmly pressed by the latching 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 latching member as in the drip bag 1A ′ shown in FIG. 5A, the bag body 10 is opened, and the drip bag 1A ′. Hang on the cup 100, pour hot water into the bag body 10 from the opening, and when the bag body 10 becomes heavy, depending on the opening diameter of the cup 100, the thickness of the side wall, etc., as shown in FIG. The portion 23 is likely to slide up from the side wall of the cup 100 in the direction of the arrow. Further, as shown in FIG. 6B, when the distance between the pair of fold lines B3 is wider at the lower end than the upper end of the fold line B as in the drip bag 1A ″ shown in FIG. In addition, the latching portion 23 of the drip bag 1 </ b> A ″ is more likely to slide up in the arrow direction from the side wall of the cup 100, and the latching portion 23 may be detached from the side wall of the cup 100.

  The latching portion 23 has inverted L-shaped portions 23a on both left and right sides of the upper portion of the latching 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). By having the inverted L-shaped portion 23a, it becomes easy to latch the latching portion 23 on the side wall of the cup 100, and by having the U-shaped portion 23b that connects the left and right inverted L-shaped portions 23a. The form which latched the latching | locking part 23 on the side wall of the cup 100 can be stabilized.

  In the inverted L-shaped portions 23 a on both the left and right sides of the upper portion of the latching portion 23, there are broken lines B <b> 4 along the sides of the latching portion 23. Further, the U-shaped portion 23b has a pair of vertical folding lines B6 at the lower center portion of the hooking portion 23. The presence of these broken lines B4, B6 and the above-described broken line B3 causes a pair of hooking portions 23 on the front and back of the bag body 10 to open the bag body 10 and are pulled in opposite directions. As shown to 1C, the fold line B3 bends on both sides of the upper center sticking area S1, and the part adjacent to the upper center sticking area S1 in the latching portion 23 stands on the surface of the upper center sticking area S1. Therefore, it becomes easy for the pulling force to concentrate on the central part in the bag body width direction of the upper edge of the bag body 10 via the upper center sticking area S1, and the fold lines B4 and B6 in the hooking part 23 are bent, The hooking portion 23 is less likely to be twisted. As a result, the force pulling the latching portion 23 acts on the center portion of the bag body 10 in the bag body width direction of the easy-cleavage line (perforation 12), and the bag body 10 is easily opened.

  In the present invention, instead of the broken line B4, a pair of broken lines B5 may be formed on both side portions of the lower portion of the hooking portion 23 as in the drip bag 1C shown in FIG. The formation of the broken line B5 can provide the same effect as that of the broken line B4.

  On the other hand, in the drip bag 1 </ b> A, a pair of broken lines B <b> 7 are formed in the center portion 25 of the hooking member 20 in the vertical direction of the hooking member 20. When the broken line B7 is formed, the bag body 10 can easily 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 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 center portion 23c of the U-shaped portion 23b of the hooking portion 23 provided on the hooking member 20 on the front and back of the bag body 10 is picked with both hands, and the directions opposite to each other. (Fig. 1B). Further pulling causes the latching member 20 to bend so that the latching portion 23 rises with respect to the upper center sticking area S1 at the broken line B3, and the bent lines B4 and B6 are also bent (FIG. 1C). The center portion of the upper side 11a of the front and back hooking members 20 begins to separate from each other (FIG. 1D), and the opening of the bag body 10 starts when the opening perforation 12 breaks at the center portion of the upper side 11a of the bag body 10. Thereafter, the upper side 11a of the bag body 10 is quickly opened over its entire width (FIG. 1E). In addition, the code | symbol 50 in FIG. 1E represents the extraction material 50 with which the bag main body 10 was filled.

  Next, while holding the center portion 23c of the U-shaped portion 23b of the drip bag 1A with the bag body 10 open with both hands, the drip bag 1A is moved onto the cup 100, and the latching portion 23 is moved to the cup 100. It is hung on the side wall (FIGS. 2A and 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 the opening method of the bag body 10, as shown in FIG. 3, the hooking portions 23 of the hooking members 20 on the front and back of the bag body 10 are folded so that the left and right side sides 23d of the hooking portion 23 overlap each other. The overlapped portions may be pulled in opposite directions. By pulling the latching portion 23 in this manner, the break of the perforation starts from the center of the upper side 11a of the bag body 10, and the break spreads over the entire width of the opening of the bag body 10, so It can be opened.

  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 hook 23 is not folded. Therefore, when the drip bag 1A is opened by folding the latching portion 23 as shown in FIG. 3, it is necessary to spread the folded latching portion 23 and latch it on the cup. Therefore, it becomes impossible to carry out from the opening of the bag body 10 to the hook 100 on the cup 100 by a continuous operation.

(Drip bag manufacturing method)
As a manufacturing method of the drip bag 1A, as shown in FIG. 15, a drip bag manufacturing sheet 40A is prepared in which the hooking members 20 are arranged and adhered to a long water-permeable filterable sheet 41 at predetermined intervals. In addition, in the same figure, the area | region pinched | interposed by the dashed-two dotted line becomes an area | region used for manufacture for one drip bag.

  When the drip bag manufacturing sheet 40A is manufactured, it is preferable that a long perforation 42 to be the opening perforation 12 of the drip bag 1A is formed in the long water-permeable filter sheet 41 in advance.

  Next, the latching member 20 and the water-permeable filterable sheet 41 are combined, and the latching member 20 and the water-permeable filterable sheet 41 are pasted in the pasting area painted with diagonal lines in FIG. 1A. The sticking area which was painted on the uppermost retaining member 20 in FIG.

  When attaching the retaining member 20 and the water-permeable filter sheet 41 by applying a heating head from the water-permeable filter sheet 41 side and thermally welding the water-permeable filter sheet 41 and the retaining member 20 It is preferable to apply a heating head to a portion that becomes an opening start portion of the bag main body 10 together with the original sticking area to form a weakened portion in the water-permeable filter sheet 41. The formation of the weakened 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 a filling and packaging machine. In this case, as shown in FIG. 16, the tubular body is formed by folding in half so that both sides in the longitudinal direction of the drip bag manufacturing sheet 40 </ b> A overlap each other and welding the sides in the longitudinal direction (vertical sealing). The lower side 11b of the bag body of the drip bag 1A is formed. Next, the side edges 11c and 11d of the bag body 10 of the drip bag 1A are vertically connected by alternately repeating welding of the tubular body in the short direction (lateral seal) 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, the side edges 11c and 11d of the bag body 10 are melted at the same time, and the drip bags 1A separated individually are continuously manufactured.

  In the case where the upper side 11a of the bag body 10 is not folded, 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. As shown in FIG. 17, a drip bag manufacturing sheet 40B in which the retaining member 20 is adhered so that the upper belt-like portion 21 of the retaining member 20 is along the 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 cleaved. It is preferable to form the contents so as not to spill.

(Modification)
The drip bag of the present invention can take various modes in addition to the drip bags 1A, 1B, and 1C described above.
For example, as the shape of the latching portion 23, as in the drip bag 1D shown in FIG. It is good also as a shape which abbreviate | omitted 23b. In the drip bag 1D, as shown in FIG. 3, after the latching portion 23 is folded and pulled to open the bag body 10, the latching portion 23 can be latched on the cup without changing.

  As in the drip bag 1E shown in FIG. 10, the protruding portion 24 of the hooking portion 23 does not reach the upper side 20a of the hooking member 20, and the upper belt-like portion 21 is continuous over the entire width of the hooking member 20. Good. In this case, you may make upper center sticking area S1 and upper side sticking area S2 continuous. When the upper belt-like portion 21 is made continuous over the entire width of the latching member 20, the bag body 10 is opened, and when the drip bag 1E is latched to the cup, the upper center of the bag body is large due to the large opening diameter of the cup. Even if the portion is pulled strongly by the latching portion 23, it is possible to prevent the opening shape of the drip bag from being flattened.

  When the upper belt-like portion 21 is continuously formed over the entire width of the hooking member 20, the upper side sticking region S2 may be intermittently formed like the drip bag 1F shown in FIG.

  As in the drip bag 1G shown in FIG. 12, the upper belt-like portions 21 of the hook members on the front and back of the bag body 10 may be made continuous. The drip bag 1G can be manufactured using the drip bag manufacturing sheet 40C shown in FIG. According to the drip bag manufacturing sheet 40C, the hook members 20 on the front and back of the bag body are continuous, and therefore, it is difficult to cause the positional displacement of the hook member 20 when the drip bag manufacturing sheet 40C is manufactured. Further, when the drip bag 1G is manufactured using the drip bag manufacturing sheet 40C, the cylindrical body of the drip bag manufacturing sheet 40C is formed by the vertical seal, and then the horizontal seal of the cylindrical body and the contents Although the filling is repeated alternately, 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 sealing can be performed using, for example, an ultrasonic welding fusing device described in JP-A-2017-19513.

  As the shape of the protruding portion 24 of the latching portion 23, the upper end 24a of the projecting portion 24 reaches the upper side 20a of the latching member 20 as in the drip bag 1H shown in FIG. The upper end of the side of the latch portion 23 is the upper end, and the outline of the protruding portion 24 between the upper end 24a and the base 24b of the protruding portion 24 is formed in a straight line, and the gap between the protruding portion 24 and the upper side 11a of the bag body 10 is defined. You may form the upper strip | belt-shaped part 21 in a triangle shape so that it may fill. Or you may make it make the upper strip | belt-shaped part 21 small to the limit like the drip bag 1I shown in FIG. 14, and the upper strip | belt-shaped part 21 may correspond with upper side sticking area S2. Moreover, when a highly rigid sheet is used as the water-permeable filter sheet forming the bag body 10, the opening is wide after opening the bag body 10 even if the upper side sticking area S <b> 2 is omitted. An open aperture shape can be maintained.

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

  The drip bag filled with coffee powder in the bag body 10 has been described above, but the extraction material 50 filled in the bag body 10 of the drip bag of the present invention is not limited to coffee powder. You may fill tea leaves, such as black tea and green tea, Chinese medicine.

Hereinafter, the present invention will be specifically described based on examples.
Examples 1 and 2 and Comparative Example 1
(1) Production of drip bag As Example 1, the drip bag 1A shown in FIG. 1A was produced. In this case, as the water-permeable filterable sheet forming the bag body 10, a nonwoven fabric (manufactured by Daiki Shoji Co., Ltd.), which is a wet nonwoven fabric composed mainly of polyester and a melt blown nonwoven fabric made of polypropylene, is integrated by partial thermocompression bonding. ), And the perforation 12 for opening is positioned at the fold mountain portion on the upper side of the bag body 10. The bag body 10 was a flat bag having a width W1 of 80 mm and a height H1 of 100 mm.

The latch member 20 was formed to the following dimension from the paperboard which laminated the polypropylene on the cup base paper.
The height H2 of the retaining member: 42 mm,
Hook member width W2: 62 mm,
The length L5 of the protruding portion in the vertical direction of the latch member: 14 mm,
The distance L4t between the upper ends of the pair of broken lines B3: 10 mm,
The distance L4b between the lower ends of the pair of broken lines B3: 4 mm

  As Example 2, a drip bag 1E similar to 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 no protruding portion was formed (FIG. 19).

(2) Tensile test As shown in FIG. 20, the adhesive tape is applied to the center portion 23c of the U-shaped portion of the hook portion 23 on the front and back of the bag body of the drip bag of each example and comparative example. 30 and the handle 30 was clamped with a jig of a tensile tester and pulled in opposite directions, and the elongation amount and tensile strength of the grip interval L10 were measured. In this tensile test, the tensile strength increases as the initial 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 taken as the tensile strength at the time of cleavage. The tensile test was repeated five times for each example and comparative example, and the average of the tensile strength at the time of tearing of the perforation 12 for opening was determined. 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 the formation of the protruding portion on the latching portion reduces the tensile strength required for opening 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 Perforation for opening, Easy tear line 13 Weak Seal 14 Opening portion 20 Latching member 20a Top side of the latching member 21 Upper band-shaped portion 23 Latching portion 23a Reverse L-shaped portion 23b U-shaped portion 23c Central portion of U-shaped portion 23d Side of latching portion 24 Projection Part 24a Upper end of protruding part 24b Base part of protruding part 25 Central part 30 Handle 40A, 40B, 40C Drip bag manufacturing sheet 41 Long water-permeable filterable sheet 42 Perforation 50 Extraction material 100 Cup B3 Upper central adhesive area Folding lines B4, B5, B6 between the hook and the latching part Bolding line B7 of the latching part B2 of the central part L2 Distance between the upper end of the upper central sticking area and the upper side of the bag body L4t Distance between the upper ends of the pair of broken lines B3 L4b Distance between the lower ends of the pair of broken lines B3 L5 Length of the protruding portion of the latching member in the vertical direction L10 Grasp distance S1 Upper center sticking area S2 Upper side sticking area S3 Center part center sticking area S4 Center part side sticking area W1 Bag body width W2 Hanging member width H1 Bag body height H2 Hanging member height

Claims (8)

A drip bag made of a bag body made of a water-permeable filter sheet, a latching member made of a thin plate material provided on the two outer surfaces facing the bag body, and an extraction material filled in the bag body There,
The bag body has an easy-cleavage line at its upper edge,
The latching member has an upper central pasting area extending downward from a portion adjacent to the easy-cleavage line at the central portion in the width direction as the pasting area with the bag body, and an upper central pasting area; It has a latching part that is continuous and can be raised from the bag body,
The hanging portion is a drip bag having a protruding portion that 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 fold 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 latching member has upper side sticking areas stuck to the bag body on both sides of the upper center sticking area.   The drip bag according to claim 3, wherein the upper center sticking area and the upper side sticking area are separated from each other.   The drip bag according to any one of claims 1 to 4, wherein the hooking member has a central portion formed below the upper central sticking area so as not to be raised from the bag body at the widthwise central portion of the hooking member.   The drip bag according to any one of claims 1 to 5, wherein the upper end of the protruding portion of the latching portion reaches the upper side of the latching member.   The drip bag according to any one of claims 1 to 6, wherein the hooking member has an upper belt-like portion that cannot be raised from the bag body along the upper side of the bag body.   8. A drip bag according to claim 7, wherein the upper belt-like portion extends over the entire width of the hooking member.

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