JP2019048169A - Drip bag - Google Patents

Abstract

To provide a drip bag allowing one-hand opening operation and an opening part of the bag body to keep in a circular form during pouring hot water.SOLUTION: A drip bag 1A comprises a bag body 10 formed from a water-permeable filter sheet, and a holder 20 provided on an outer surface of the bag body. The holder 20 folded in two, namely a front surface part 20a and a back surface part 20b, along a first folding line 22, includes: a cutting line 23 extending in the direction of the first folding line 22 from the laterally central part of the holder 20 on each of the front part 20a and the back surface part 20b; a second folding line 24 extending toward either the opening part or the bottom line of the holder 20 from the cutting line 23 without reaching the edge of the holder 20; and a third folding line 25 extending from the end, which is on the opposite side of the cutting line 23, of the second folding line 24 toward the first folding line. There are two areas vertically adjacent to the cutting line 23. One of the two areas on the side opposite to the second folding line 24 has a belt-like area 21 that has neither folding lines nor cutting lines in a vertical direction of the bag body.SELECTED DRAWING: Figure 2

Description

  BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a drip bag that can be easily dripped to obtain an extract liquid such as coffee by being hooked to the top of a container such as a cup.

  A holder made of a thin plate material is attached to a bag body made of a water permeable filterable sheet as a drip bag for making it possible to easily put a cup of coffee in a full-scale paper drip system. There is one filled with coffee powder inside. There are various forms of this drip bag. For example, before using the drip bag, a holder formed of a thin plate material is folded in half at a broken line, and the broken line overlaps with the side edge of the bag body There are those in which the holder is opened in a V-shape at the time of use (Patent Document 1), and in which the same holder is opened in a rectangle at the time of use (Patent Document 2). In these drip bags, an operation of opening the holder, which has been folded in half, using both hands is required, and both hands are also necessary for an operation such as folding a predetermined portion so that the holder can maintain the opening shape. Become.

  On the other hand, it is a drip bag consisting of a bag body made of a water permeable filterable sheet and a holder made of a thin plate material, and the holder is folded in half at a broken line before using the drip bag. There exists a thing which enabled it to form the opening shape of a holder by one-handed operation by forming a specific "C-shaped broken line" in (patent document 3). According to this drip bag, the opening shape of the drip bag can be formed with one hand, and the drip bag can be held on the cup as it is, which is convenient.

Patent No. 4070628 Patent No. 3553892 Patent 5326366

  However, for the above-mentioned conventional drip bag, it is desirable to expand the area which can be poured by stabilizing the opening shape by making the opening shape of the bag body closer to a circular shape when the holder is opened. It was

  On the other hand, in the present invention, as in the drip bag described in Patent Document 3, the operation of opening the holder can be easily performed with one hand, and the opening shape of the bag main body approaches a circular shape. The task is to be maintained at the time of pouring.

  According to the inventor of the present invention, prior to use of the drip bag, the holder formed of the thin plate material is folded in half at a broken line (hereinafter, this broken line is referred to as a first broken line), and the holder is opened in use. In the bag, at each of the front and back portions of the holder, a horizontal score line extending toward the first broken line at the central portion in the width direction and a horizontal score line extending from the lateral score line to the bottom or opening side of the bag body If the second broken line which does not reach and the third broken line extending from the end of the second broken line to the first broken line side are formed, the open shape of the holder can be easily fixed with one hand by these broken lines, and The opening shape of the bag body by the band-like region formed on the opposite side of the second broken line adjacent to the horizontal score line by blocking the bending of the holder in the two broken lines at the horizontal score line Since the round shape is given, the opening shape of the bag body approaches a circular shape, and further, by the stiffness of the thin plate-like material of this band-like region, it is found that the circular shape is maintained even at pouring. did.

That is, the present invention is a drip bag comprising a bag body formed of a water-permeable filterable sheet and having an open upper end, and a holder formed of a thin plate-like material and provided on the outer surface of the bag body ,
The holder is folded in two in the front part and the back part at a first broken line, and the first broken line overlaps the side of the bag body,
A horizontal score line extending toward the first broken line at the widthwise center of the front or back of the holder folded in two,
There is a second broken line extending from the horizontal score line to the opening or lower side of the holder and not reaching the edge of the holder, and a third broken line extending from the end of the second broken line opposite to the horizontal score line to the first broken line And
Among the areas adjacent to the horizontal score line above or below the horizontal score line, there is a band-shaped area without a broken line in the vertical direction of the bag body and a broken line in the area opposite to the second broken line,
Provided is a drip bag having in the lower area of the front and back of the holder a hooking piece formed engagable from the bag body.

  According to the drip bag of the present invention, in a state where the holder is folded in two at the first broken line and the upper end of the bag body is unsealed, the both side edges of the holder can be gripped with one hand to crush the holder When force is applied, the front and back parts of the holder folded at the first broken line open, the second broken line formed respectively at the front and back parts becomes valley fold, and the third broken line becomes mountain fold And the opening opens. When the opening is completely opened, the area surrounded by the second broken line and the third broken line becomes one surface extending from the front to the back, and the force applied to the holder by pinching between the front and the back to be closed Even if the key is released, the shape of the opening remains fixed. Therefore, it becomes possible to easily make the drip bag into an opening shape and to widely open the bag body by one-handed operation.

  Further, since there is an end point of the second broken line on the horizontal break line, the bending of the second broken line is interrupted by the horizontal break line in the band-like region opposite to the second broken line in the region adjacent to the horizontal break line. Since there is no broken line or break line in the vertical direction of the bag body in this band-like area, the band-like area is curved by the stiffness of the thin plate-like material forming the band-like area in the opening shape of the drip bag. It approaches circular shape visually, and pouring becomes easy. In addition, there is no broken line or break line in the vertical direction of the bag body in this band-like area, and the band-like area is bent at the broken line or break line even if pouring into the bag body by the band-like area being curved. Absent. For this reason, in the drip bag, a wide opening shape before pouring is maintained.

FIG. 1 is a plan view of the drip bag 1A of the embodiment in an unopened state. FIG. 2 is a perspective view of the drip bag 1A of the embodiment with the bag body opened and the drip bag hooked on the cup. FIG. 3 is an explanatory view of a method of using the drip bag 1A of the embodiment. FIG. 4 is an explanatory view of a method of using the drip bag 1A of the embodiment. FIG. 5 is a plan view of a holder original sheet material used for manufacturing the drip bag 1A. FIG. 6 is an explanatory view of a method of manufacturing the drip bag 1A using a sheet material. FIG. 7 is a plan view of the drip bag 1B of the embodiment in an unopened state. FIG. 8 is a plan view of the drip bag 1C of the embodiment in an unopened state. FIG. 9 is a plan view of the drip bag 1D of the embodiment in an unopened state. FIG. 10 is an explanatory view of a method of using the drip bag 1D of the embodiment. FIG. 11 is a perspective view of how to use the drip bag 1D of the embodiment.

Hereinafter, the present invention will be specifically described with reference to the drawings. In the drawings, the same reference numerals denote the same or equivalent components.
(Overall structure of drip bag)

  FIG. 1 is a plan view of the drip bag 1A according to an embodiment of the present invention in an unopened state, and FIG. 2 is a state in which the bag body of the drip bag 1A is opened and the drip bag 1A is hooked to a cup. It is a perspective view.

  As shown in FIG. 1, the drip bag is formed of a rectangular bag body 10 and a holder 20 provided on the outer surface of the bag body 10. The holder 20 is attached to the bag body 10 in the shaded area in FIG.

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

  As the water flow filterable sheet forming the bag body 10, various sheets can be used which are capable of leaching coffee when filled with a predetermined amount of coffee powder and poured. Generally, as a sheet for leaching, a woven or non-woven fabric made of synthetic fibers such as polyester, nylon, polyethylene, polypropylene, vinylon, semi-synthetic fibers such as rayon, natural fibers such as kozo and mitsumata, or composite fibers, Papers such as tea bag base paper, etc., such as mixed paper made of manila hemp, wood pulp, polypropylene fibers, etc., are known, and these can be used in the present invention as well, but the point of discardability after use of drip bag Therefore, it is preferable that the water-flow filterable sheet material contains biodegradable fibers. Examples of biodegradable fibers include polylactic acid, polybutylene succinate, polyethylene succinate and the like. In addition, in order to be able to impart an appropriate steaming effect to coffee powder at the time of dripping, when manufacturing a water-permeable filterable sheet from these fiber materials, it is possible to directly make coffee powder by adjusting the porosity of the fiber layer. Layers that are in contact with each other are “sparse” and layers that are not in direct contact are “dense” in a dense / dense multilayer structure, and in layers that are in direct contact with coffee powder, the hydrophobic fiber content is increased It is preferable to reduce the content of hydrophobic fibers in the layer not in direct contact with the coffee powder (Japanese Patent No. 3674486).

  The bag body 10 is sealed by an upper side 11a, a lower side 11b, and one side 11c, and the other side 11d is a flat bag which is formed into a ring by a fold and has two opposing sides. . The upper end portion of the bag body 10 is cut off when the drip bag 1A is used by the opening perforation 12 formed along the upper side of the holder 20, and the line of the opening perforation 12 becomes the opening edge of the drip bag . The perforation 12 is bent toward the upper side of the bag body 10 from the vicinity of the first broken line 22, and after the upper end of the holder 20 is cut off by the perforation 12, the projecting portion 28 is formed in the vicinity of the first broken line. ing. Due to the presence of the protrusion 28, after the coffee is extracted by the drip bag 1A, the protrusion 28 can be pinched to remove the drip bag 1A from the cup.

  The net planar dimension of the bag body 10 excluding the portion cut off at the perforation 12 is 70 to 110 mm in width W1 and 50 to 70 mm in height H1 with respect to a normal cup having an opening diameter of about 60 to 105 mm. It is preferable to

(holder)
The holder 20 is formed by punching a thin plate-like material such as a paper board or a plastic sheet. This thin sheet material may also be formed of a biodegradable material such as polylactic acid, polybutylene succinate, polyethylene succinate and the like from the viewpoint of discardability after use of the drip bag 1A.

  Further, as the thin plate-like material, since the opening shape of the bag main body is made closer to a circle in top view by the band-like region 21 as described later, the strength of stiffness, that is, the stiffness (JIS P 8125: 2000) As an average of stiffness and stiffness in the vertical direction, it is preferable to use one having a diameter of 2 mN · m to 10 mN · m.

(1st line)
The holder 20 is equally divided into a front portion 20a and a back portion 20b by a first broken line 22 to form a front and a back of the drip bag. As will be described later, in the manufacturing process of the drip bag 1A, since the thin plate material forming the holder 20 and the water permeable filterable sheet forming the bag main body 10 are folded at the first broken line 22, The first broken line 22 overlaps the side of the bag body 10 over the entire length thereof.

In the present invention, a plurality of broken lines including the first broken line 22 are formed by perforations, half cuts or the like, but when a force is applied to crush both side edges of the holder as described later In order that the holder takes an opening shape, it is possible to form perforations composed of short ties of 0.5 to 1.5 mm in length and long cuts of 5 to 30 mm in length as these broken lines. On the other hand, with regard to a broken line which should be formed particularly easily, it is preferable to set one broken line as one long cut and short ties at both ends thereof, and shorten the ties unless they are broken by bending.
The widths of the front surface portion 20a and the back surface portion 20b of the holder 20 are each formed to be substantially equal to the width W1 of the bag body 10 at a degree slightly smaller than the width W1 of the bag body 10.

(Horizontal score line and band area)
In the holder 20, a horizontal score line 23 extends horizontally along the opening of the bag body 10 (perforation 12 for opening) in the direction of the first broken line 22 from the widthwise center of the front 20a and the back 20b. Of the regions adjacent to the upper and lower sides of the horizontal score line 23, that is, the area opposite to the second broken line 24, that is, the area between the horizontal score line 23 and the perforation 12 for opening is the bag body vertical direction. It has become the strip | belt-shaped area | region 21 which has neither a broken line nor a broken line.

  In the present invention, the first broken line side end 23 a of the horizontal score line 23 may or may not reach the first broken line 22. As shown in FIG. 1, since the horizontal score line 23 does not reach the first broken line 22, the opening shape of the drip bag 1A straddles the front part 20a and the back part 20b of the holder, and the second broken line and the third broken line. An area A1 (the hatched portion in FIG. 2) which is enclosed and acts as one surface can be sufficiently secured, and the surface is stretched between the front portion 20a and the back portion 20b of the holder 20. This is preferable because it prevents the front part 20a and the back part 20b from approaching and closing the opening, and the opening shape of the holder 20 is stabilized. In addition, although the first broken line side end 23a of the horizontal score line 23 is located in the vicinity of the first broken line 22, by not reaching the first broken line 22, each of the front portion 20a and the back portion 20b of the holder 20 Since the roundness of a larger radius of curvature is formed in the opening shape of the bag body 10 by the belt-like region 21, the opening shape can be made more circular and the opening area can be wider. On the other hand, the horizontal break line 23 may reach the first broken line 22. In this case, the strip-shaped regions 21 of the front surface portion 20a and the back surface portion 20b of the holder 20 are continuously formed into one strip-shaped region.

  The end 23b opposite to the first broken line 22 of the horizontal score line 23 is at the center in the width direction of the front 20a or the back 20b of the holder 20. The end 23 b may be on the first broken line 22 side of the center line 20 c of the width of the front surface 20 a or the back surface 20 b of the holder 20, and may be on the opposite side.

  The length L1 of the width direction of the bag body of the transverse slit line 23 is preferably 5 to 65% of the width of the front portion 20a or the back portion 20b of the holder 20. When the length of the horizontal score line 23 is made as long as possible in each of the front portion 20a and the rear surface portion 20b of the holder 20 by positioning the end 23b of the horizontal score line 23 in the vicinity of the fifth broken line 29, the opening shape of the bag body 10 Can be as close to a circle as possible. On the other hand, when the length L1 of the horizontal score line 23 is excessively short, in the opening shape of the drip bag 1A, it is difficult to obtain the effect of making the opening shape of the bag body closer to a circle in top view.

  The distance between the horizontal score line 23 and the perforations 12, that is, the vertical length L2 of the drip bag in the belt-like region 21 is preferably 5 to 25 mm. If the length L2 is too short, it is difficult to make the opening shape of the bag body close to a circle utilizing the rigidity of the thin plate material forming the holder 20, and if too long, the vertical length of the holder 20 itself becomes too long. Not desirable.

(Second line)
In the drip bag 1A of the present embodiment, the second broken line 24 extends from the middle portion of the horizontal score line 23 to the bottom side of the bag body 10. As shown in FIG. 9, in the present invention, the second broken line 24 may be extended toward the opening of the holder.

  In the present embodiment, the lower end of the second broken line is at the first broken line side end of the score line forming the upper side of the hooking piece 32. Thus, when the drip bag 1A is opened, the region A1 surrounded by the second broken line and the third broken line is stretched between the front and back portions of the holder over the front and back portions of the holder. It becomes easier to fix the opening shape of the holder.

  The second broken line 24 may be parallel to the first broken line 22 or may be skewed, but in the case of skewing, the distance between the second broken line 24 and the first broken line 22 is It is preferable to make it spread from the start point 24a of the two-folded line toward the end point 24b. In particular, in order to stabilize the opening shape of the holder 20, it is preferable that the second broken line 24 be oblique to the first broken line 22, and the angle θ4 between them be 0 ° <θ4 ≦ 60 °.

  In addition, the second polygonal line 24 is a thin plate-like material forming the holder 20 by holding the both sides of the drip bag with one hand when using the drip bag 1A and applying a force to crush the drip bag. It is preferable to form from the perforation in which the both ends of the 2nd broken line 24 were formed by a long tie, and the interval was formed by one long cut so that it may be bent by the 2nd broken line 24. Further, the length of the tie in this portion can be shortened as long as it is not broken by bending, and can be 0.5 mm or less depending on the thin plate material forming the holder 20.

(Third line)
A third broken line 25 directed to the first broken line side is formed from the lower end (end point 24 b) of the second broken line 24.

  The area A1 surrounded by the second broken line and the third broken line and acting as one surface is stretched between the front part 20a and the back part 20b of the holder 20 over the front part and the back part of the holder. From the viewpoint of stabilizing the opening shape of the holder 20, the third broken line 25 preferably reaches the first broken line 22 and is preferably skewed with respect to the width direction of the bag body 10 . The angle θ3 formed between the third broken line 25 and the first broken line 22 may be either acute or obtuse, but if it is acute as shown in FIG. This is preferable because the opening shape of the holder 20 is maintained even if the

  Note that, as shown in FIG. 2, in the opening shape of the drip bag, a discontinuous step 38 is formed at the boundary between the band-like region 21 above the lateral score line 23 and the vicinity of the second broken line 24 below. . By this step 38, the band-like region 21 is curved to make the opening shape of the bag body 10 close to a circle in top view, and the opening shape of the drip bag is stabilized by the bending of the second broken line 24 and the third broken line 25. In order to achieve both, it is preferable not to stick the holder 20 and the bag body 10 in a region near the horizontal score line 23 so that the above-described step can be formed.

(4th line)
The drip bag 1A of the present embodiment has a fourth broken line 26 extending from the bag body bottom side end of the score line 33 forming the hooking piece 32 to the bag body bottom side. The formation direction of the fourth broken line is a direction from the lower side of the holder toward the end of the second broken line opposite to the horizontal score line or in the vicinity thereof. As shown in FIG. 9, in the present invention, the fourth broken line 26 may be extended from the edge forming the opening of the holder.

  The fourth broken line 26 is an area A1 which is surrounded by the second broken line and the third broken line and acts as one surface over the front part and the back part of the holder, between the front part 20a and the back part 20b of the holder 20. It acts to be stiff and contributes to the stabilization of the opening shape of the holder 20.

  In the drip bag 1A of the present embodiment, the upper end of the fourth broken line is at the first broken line side end of the score line forming the lower side of the hooking piece 32. Thus, when the drip bag 1A is opened, an area A1 surrounded by the second broken line and the third broken line is made to stretch between the front and back portions of the holder over the front and back portions of the holder. Thus, it is easier to fix the opening shape of the holder.

  It is preferable that an angle θ5 between the fourth broken line 26 and the first broken line 22 be larger than 0 ° (that is, the distance between the fourth broken line 26 and the first broken line 22 be narrowed toward the bottom portion on the bag body side).

  Although the fourth broken line 26 may be parallel or oblique to the first broken line 22, the distance between the fourth broken line 26 and the first broken line 22 is preferably from the point of stabilizing the opening shape of the drip bag 1A. It is preferable to make the fourth broken line 26 obliquely so as to narrow toward the bottom side of the bag body 10, and in particular, the angle θ5 between the fourth broken line 26 and the vertical direction of the bag body 10 is 0 ° to 60 °. It is preferable to do.

(Diagonal line)
In the drip bag 1A, in each of the front part 20a and the back part 20b of the holder 20, a diagonal broken line extends from the opening of the bag main body 10 to the bottom side in the region opposite to the first broken line 22 from the center in the width direction. Is preferably provided. In particular, a plurality of diagonal broken lines 29, 30 are provided in this area, and the fifth broken line 29 closer to the center line 20c of the width of the front part 20a or the back part 20b of the holder 20 among the diagonal broken lines 29, 30 Assuming that the angle formed by the direction is θ1 and the angle between the sixth broken line 30 located outside the fifth broken line 29 in the width direction of the bag body and the vertical direction of the bag body is θ2, 0 ° <θ2 ≦ θ1
It is preferable to By defining the angles θ1 and θ2 in this manner, the side edges of the holder 20 are gripped with one hand in order to make the drip bag 1A into an open shape, and a force is applied to squeeze the holder. Both of the broken line 29 and the sixth broken line 30 are bent, and the opening shape of the bag body 10 can be made closer to a circle in top view.

  That is, the sixth broken line 30 is more difficult to bend than the fifth broken line 29 from the point of the formation position by being separated from the center line 20c with respect to the fifth broken line 29, but by 0 <θ2 <θ1. Since it is easier to bend than the fifth polygonal line 29 in terms of the angle with respect to the vertical direction of the bag body, both the fifth polygonal line 29 and the sixth polygonal line 30 become to bend as described above. Further, depending on the distance between the fifth broken line 29 and the sixth broken line 30, etc., there is no significant difference in the bending ease depending on the formation position, and in this case, even if θ1 = θ2, the fifth broken line 29 and the sixth broken line 30 can be obtained. Both sides bend.

  When the angle θ2 of the sixth broken line 30 is zero, that is, when the sixth broken line 30 is perpendicular to the edge of the opening of the holder 20, both side edges of the holder 20 are formed to make the drip bag 1A open. When a force is applied to crush the holder 20 from the part, only the sixth broken line 30 is not easily bent without the fifth broken line 29 being bent, which is not preferable.

  When the angles θ1 and θ2 are negative, that is, the fifth broken line 29 and the sixth broken line 30 are inclined toward the center line 20c from the lower side to the upper side of the holder 20, the opening of the bag main body 10 It is not preferable because a twist occurs and the opening of the opening becomes smaller.

  In the drip bag 1A of the present embodiment, a seventh broken line 31 extends from the lower end of the fifth broken line 29 to the bottom side of the bag body 10. The seventh broken line 31 is skewed so that the distance between the seventh broken line 31 and the center line 20c is widened toward the bottom of the bag body. For this reason, the fifth broken line 29 and the seventh broken line 31 A broken line bent in a << form is formed. By providing the bent broken line in this manner, the opening shape of the drip bag can be made to be symmetrical in left and right symmetry in a front view, and the opening shape of the bag body as a whole can be made closer to a circle in top view.

(Stopping piece)
In the lower region of each of the front surface portion 20a and the back surface portion 20b of the holder 20, two hooking pieces 32, 34 are provided side by side, which can be triggered by the score lines 33, 35 from the bag body 10. In the drip bag 1A of this embodiment, the end portions of the two hook pieces 32 and 34 on the side of the first broken line 22 are continuous with the remaining portion of the holder 20 and can not be caused. In particular, in the hooking piece 32 on the first broken line side, the end forming the upper side of the hooking piece 32 is the lower end of the second broken line 24 and the end forming the lower side of the hooking piece 32 is the fourth broken line 26. Since it is the upper end, when the drip bag is opened, a force is applied to crush the holder 20 from both side edges of the holder 20, and the area A1 surrounded by the second broken line 24 and the third broken line 25 is the holder The hooking piece 32 projects from the surface of the bag body 10 at the same time as it becomes one surface across the front and back portions.

  On the other hand, in the present invention, the hooking piece 34 opposite to the first broken line is opposite to the first broken line 22 in the hooking piece 34 farther from the first broken line 22 like the drip bag 1B shown in FIG. The end of the may be formed non-triggerable.

  The two hooking pieces 32 and 34 have protrusions 32 a and 34 a that project to the bottom side of the drip bag 1 </ b> A at the ends away from the bag body 10 respectively. Further, the sides 32b, 34b on the bottom side excluding the projecting portions 32a, 34a extend in the width direction of the holder 20, and the positions of the sides 20b, 34b in the vertical direction of the holder 20 are aligned. Here, the side 32 b on the bottom side of the hooking piece 32 on the first polygonal line side is longer than the side 34 b on the bottom side of the other hooking piece 34. This makes it easy to hold the drip bag even on a cup having a large opening diameter.

  Each of the broken lines and the broken lines in the holder described above is preferably formed symmetrically about the first broken line 22 in a state in which the first broken line 22 is opened and the holder 20 is spread flat.

(How to use the drip bag)
As a method of using the drip bag 1A, first, the upper edge side of the drip bag 1A is removed from the perforation 12 for opening the holder 20, and the bag body 10 is opened.

  Next, as shown in FIG. 3, the side edges of the holder 20 are gripped with one hand, and as shown in FIG. 4, a light force is applied to crush the holder 20. As a result, the bag body 10 opens wide in a nearly circular shape in top view, and the hooking pieces 32, 34 project from the surface of the bag body 10.

  Therefore, as shown in FIG. 2, the hooking pieces 32 and 34 of the drip bag are hooked on the upper edge of the cup 100 and the pouring is carried out from the opening of the bag body 10 to obtain coffee extract in the cup 100. . Even after pouring, the opening shape of the bag body 10 is maintained in a nearly circular shape by the curved band-like region 21.

(Drip bag manufacturing method)
As a method of manufacturing the drip bag 1A, as shown in FIG. 5, a sheet with sheet holder 40 is prepared, in which the holder 20 is attached to the raw sheet 41 of a long water permeable filter sheet at predetermined intervals. The packaging and filling machine, as shown in FIG. 6, is folded in half with the first broken line 22 of the holder 20 and welded to the side 11c of the bag body 10 to form a tubular shape, and the upper side of the bag body 10 11a and the lower side 11b are also sequentially welded, and the contents are filled in the bag body 10, the drip bag is continuously manufactured, and the drip bags connected vertically are separated to obtain individual drip bags 1A. Alternatively, melting is simultaneously performed at the time of welding of the upper side 11a and the lower side 11b of the bag body 10, and the drip bags 1A individually cut off are continuously manufactured.

(Modified form)
The drip bag of the present invention can take various aspects other than the above-described drip bag 1A.
For example, the fourth broken line 26 may be omitted in the drip bag 1A shown in FIG.

  Further, as in the drip bag 1C shown in FIG. 8, the fourth broken line 26 is omitted from the drip bag 1A shown in FIG. 1, and a third extending from the lower end of the first broken line 22 toward the end point 24b of the second broken line A polygonal line 25 'may be formed.

  Furthermore, in the drip bag 1A shown in FIG. 1, the second broken line 24 is provided on the bag main body bottom side of the lateral cutting line 23. For example, like the drip bag 1D shown in FIG. It may be provided on the bag body opening side of the line 23. Also in the drawing, the holder 20 is attached to the bag body 10 at the hatched portion.

  In this drip bag 1D, the third broken line 25 is formed from the first broken line 22 toward the end point 24b of the second broken line 24, and from the edge forming the opening of the holder to the end point 24b of the second broken line 24 A fourth broken line 26 is formed. The angle θ4 formed by the second broken line 24 and the vertical direction of the bag body, the angle θ3 formed by the third broken line 25 and the first broken line 22 and the angle θ5 formed by the fourth broken line 26 and the vertical direction of the bag body are the aforementioned drips. It can be in the same range as the angles θ4, θ3 and θ5 of the bag 1A.

  Further, in the drip bag 1D, the lateral score line 23 is formed slightly obliquely with respect to the upper side 11a of the bag body 10 at the central portion of the holder 20. As described above, in the present invention, the horizontal score line 23 extending in the bag body width direction is not required to be strictly horizontal, and may extend in the width direction of the bag body toward the first broken line 22. In the case of forming the side score line 23 obliquely, there is no particular limitation on the angle θ6 that the side score line 23 makes with the horizontal line.

  The seal strength of the upper side 11a of the bag body 10 of the drip bag 1D is weak with respect to the seal strength of the lower side 11b and the side 11c, and the seal of the upper side 11a is formed easily. Further, a pinching piece 39 is attached immediately below the upper side 11a at the center in the width direction of the bag body. The lower portion 39a of the pinching piece 39 can be pulled from the bag body 10.

  Therefore, when using the drip bag 1D, as shown in FIG. 10, lower portions 39a of the pair of pinching pieces 39 facing each other are caused by the front and back surfaces of the drip bag 1D and pulled in opposite directions to open the upper side 11a. Let

  Next, as in the case of the aforementioned drip bag 1A, the side edges of the holder 20 are gripped with one hand, and a light force is applied to crush the holder 20. As a result, as shown in FIG. 11, the opening shape of the bag body 10 is close to a circle, and the bag body 10 is widely opened, and the hooking pieces 32 and 34 protrude from the bag body 10. In addition, an area A1 surrounded by the second broken line 24 and the third broken line 25 respectively formed on the front surface portion 20a and the back surface portion 20b of the holder 20 corresponds to one surface across the front surface portion 20a and the back surface portion 20b of the holder 20 The opening shape of the holder 20 is fixed between the front portion 20a and the back portion 20b. Furthermore, the bending shape of the second broken line 24 and the lateral score line 23 are separated by the discontinuous step 38, and in the region adjacent to the upper and lower sides of the horizontal score line 23, opposite to the second polygonal line 24 in the vertical direction of the bag body. There are band-like regions 21 without broken lines or broken lines. Therefore, in the opening shape of the drip bag 1D, the band-like region 21 is curved and protrudes due to the stiffness of the thin plate-like material forming the band-like region 21, and the opening shape of the bag body is stabilized. When the pinching pieces 39 are provided at the opening of the bag main body 10 as in the present embodiment, it is difficult to secure a band-like region at the opening of the side score line 23. However, the band-like region 21 is provided below the side score line 23. It can be easily secured.

  As shown in FIG. 11, the hooking pieces 32 and 34 of the drip bag 1 D are hooked on the upper edge of the cup 100 and poured from the opening of the bag body 10 to obtain a coffee extract in the cup 100. Even after pouring, the opening shape of the drip bag 1D is stabilized by the tension of the area A1 surrounded by the second broken line 24 and the third broken line 25 as described above, and the stiffness of the thin plate material forming the band-like area 21 The shape of the opening remains curved, and the opening of the bag body does not shrink after pouring.

  As mentioned above, although the drip bag which filled the bag main body 10 with coffee powder was demonstrated, the extraction material 50 with which the bag main body 10 of the drip bag of this invention is filled is not restricted to coffee powder. It may be filled with black tea, tea leaves such as green tea, Chinese medicine and the like.

  The invention also encompasses drip bags in which the bag body is not filled with the extraction material. In such a drip bag, the upper end of the bag body is open, and the user optionally puts the extraction material into the bag body to obtain the extraction liquid.

1A, 1B, 1C, 1D drip bag 10 bag body 11a upper side 11b lower side 11c side side 11d side side (wheel)
12 Perforation 20 Holder 20a Front part 20b Back part 20c Center line 21 Striped area 22 first broken line 23 Horizontal score line 23a First broken line side end of horizontal score line 23b End section opposite to the first broken line of the horizontal score line 24 2 broken line 24a start point 24b end point 25, 25 'third broken line 26 fourth broken line 27 lower edge of holder 28 protrusion 29 fifth broken line (diagonal broken line)
30 6th line (diagonal line)
31 seventh polygonal line 32 hooking piece 32a protruding part 32b bottom side 33 broken line 34 hooking piece 34a protruding part 34b bottom side 35 broken line 38 step 39 pinched piece 39a pinched tab lower part 40 sheet with holder Raw material 41 Raw material of water flowable filtration sheet 50 Extraction material 100 cup A1 area H1 height of bag main body length L1 horizontal slit line length L2 vertical length of drip bag W1 width of bag main body

Claims (4)

A drip bag comprising a bag body formed of a water-permeable filterable sheet and having an open upper side, and a holder formed of a thin plate-like material and provided on the front and back portions of the bag body,
The holder has a hook that can be triggered from the bag body,
A drip bag having a pinching piece not protruding from the upper side between the upper side and the hooking portion on the front and back portions of the bag body, and the pinching piece having a portion that can be pulled from the bag body.   The drip bag according to claim 1, wherein a pinching piece is formed on the holder.   The drip bag according to claim 1 or 2, wherein the pinching piece has an activatable portion at its lower portion and has a sticking portion with the bag body at its upper portion.   The drip bag according to any one of claims 1 to 3, wherein the bag body is rectangular in plan view, the upper side and at least one side side are sealed, and the seal strength of the upper side is weaker than the seal strength of the side side. .

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