JP6451818B2 - Drip bag - Google Patents

Description

  The present invention relates to a drip bag that can be easily drip-type to obtain an extract such as coffee by being hooked on an upper part of a container such as a cup.

  As a drip bag that makes it easy to put a cup of coffee with a full-fledged paper drip system, a holder made of a thin plate material is attached to the bag body made of a water-permeable filter sheet, Some of them are filled with coffee powder. There are various types of drip bags. For example, before using the drip bag, a holder made of a thin plate-like material is folded in two along a broken line, and the folded line overlaps with a side edge of the bag body. There are a type in which the holder is opened in a V shape when used (Patent Document 1) and a type in which a similar holder is opened in a rectangular shape when used (Patent Document 2). In these drip bags, it is necessary to open the holder that has been folded in half using both hands, and both hands are required for operations such as folding a predetermined part so that the holder can maintain the opening shape. Become.

  On the other hand, a drip bag comprising a bag body made of a water-permeable filter sheet and a holder made of a thin plate-like material, and the holder is folded in two along a broken line before using the drip bag. In particular, there is one in which a specific “shaped polygonal line” is formed so that the opening shape of the holder can be formed by one-handed operation (Patent Document 3). According to this drip bag, since the opening shape of the drip bag can be formed with one hand and the drip bag can be hooked on the cup as it is, it is easy to use.

Japanese Patent No. 4070628 Japanese Patent No. 353592 Japanese Patent No. 5326366

  However, for the above-described conventional drip bag, it is desired that the opening shape of the bag body when the holder is opened is made closer to a circular shape so that the area for pouring can be expanded and the opening shape is stabilized. It was.

  In contrast, according to the present invention, the opening operation of the holder can be easily performed with one hand as in the drip bag described in Patent Document 3, and the opening shape of the bag body is made close to a circle. The problem is to be maintained even during pouring.

  Before using the drip bag, the inventor has a holder made of a thin plate-like material folded in two with a polygonal line (hereinafter, this polygonal line is referred to as a first polygonal line), and the holder is opened when used. In the bag, in each of the front part and the rear part of the holder, a transverse line extending to the first fold line side at the center in the width direction, and extending from the transverse line to the bottom side or the opening side of the bag body, When the second broken line and the third bent line extending from the end of the second bent line to the first bent line side are formed, the opening shape of the holder can be easily fixed with one hand by these broken lines, and Since the bending of the holder at the two broken lines is blocked by the transverse line, the opening shape of the bag body is formed by a belt-like region formed on the opposite side of the second broken line adjacent to the transverse line. Since the round shape is added, the opening shape of the bag body approaches a circular shape.Further, it has been found that the opening shape close to a circular shape is maintained even during pouring due to the stiffness of the thin plate material in the belt-like region. did.

That is, the present invention is a drip bag comprising a bag body formed of a water-permeable filter sheet and having an upper end opening, and a holder formed of a thin plate material and provided on the outer surface of the bag body. ,
The holder is folded in half at the front and back portions at the first fold line, and the first fold line overlaps the side of the bag body,
A transverse line extending toward the first fold line at the center in the width direction of the front or back of the holder folded in half;
Has a second fold line that extends from the transverse line to the opening or lower side of the holder, does not reach the edge of the holder, and a third fold line that extends from the end of the second fold line opposite the transverse line to the first fold line side And
Of the region adjacent to the transverse line above or below the transverse line, in the region opposite to the second broken line, there is a belt-like region without a broken line and broken line in the bag body vertical direction,
Provided is a drip bag having hooking pieces formed to be able to be raised from a bag main body in lower regions of a front part and a rear part of a holder.

  According to the drip bag of the present invention, when the holder is folded in two at the first fold line and the upper end of the bag body is opened, both side edges of the holder are gripped with one hand so that the holder is crushed. When force is applied, the front and back parts of the holder folded at the first fold line are opened, the second fold lines formed on the front and back parts are valley folds, and the third fold line is mountain folds. And the opening opens. When the opening is fully opened, the area surrounded by the second and third fold lines becomes a single surface that spans the front and back parts, and the force applied to the holder is pulled between the front and back parts to be closed. This opening shape remains fixed even if the is released. Therefore, the drip bag can be easily opened by one-handed operation, and the bag body can be opened widely.

  In addition, since the end point of the second broken line is on the transverse line, the second broken line is blocked by the transverse line in the belt-like region opposite to the second broken line in the region adjacent to the transverse line. Since there is no fold line or cut line in the vertical direction of the bag body in this belt-shaped region, the belt-shaped region is curved by the stiffness of the thin plate material forming the belt-shaped region in the opening shape of the drip bag. It approaches a circle visually, and pouring is easy. In addition, there is no broken line or broken line in the vertical direction of the bag body in this belt-like area, and the belt-like area is curved, so that the belt-like area can be bent at the broken line or broken line even if it is poured into the bag body. Absent. For this reason, the wide opening shape before pouring is maintained in the drip bag.

FIG. 1 is a plan view of an unopened state of the drip bag 1A of the embodiment. FIG. 2 is a perspective view of a state in which the bag body of the drip bag 1A of the embodiment is opened and the drip bag is hooked on the cup. Drawing 3 is an explanatory view of the usage method of drip bag 1A of an example. FIG. 4 is an explanatory diagram of a method of using the drip bag 1A of the embodiment. FIG. 5 is a plan view of an original sheet with a holder used for manufacturing the drip bag 1A. FIG. 6 is an explanatory diagram of a method of manufacturing the drip bag 1A using the sheet raw material. FIG. 7 is a plan view of an unopened state of the drip bag 1B of the embodiment. FIG. 8 is a plan view of an unopened state of the drip bag 1C of the embodiment. FIG. 9 is a plan view of an unopened state of the drip bag 1D of the embodiment. FIG. 10 is an explanatory diagram 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 each figure, the same numerals indicate the same or equivalent components.
(Overall structure of drip bag)

  FIG. 1 is a plan view of an unopened state of a drip bag 1A according to an embodiment of the present invention. FIG. 2 shows a state in which the bag body of the drip bag 1A is opened and the drip bag 1A is hooked on 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 affixed to the bag body 10 in a region filled with diagonal lines in FIG.

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

  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. In addition, in order to be able to impart an appropriate steaming effect to the coffee powder during drip, when producing a water-permeable filterable sheet from these fiber materials, the porosity of the fiber layer is adjusted to directly adjust the coffee powder. The layer that will be in contact is sparse, the layer that is not in direct contact is a dense and dense multi-layer structure, and the layer that is in direct contact with coffee powder increases the hydrophobic fiber content, In the layer not in direct contact with the coffee powder, it is preferable to reduce the content of hydrophobic fibers (Japanese Patent No. 3694486).

  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 that is formed by a fold mountain and has two opposing surfaces. . The upper end of the bag body 10 is cut off by the opening perforation 12 formed along the upper side of the holder 20 when the drip bag 1A is used, and the line of the opening perforation 12 becomes the opening edge of the drip bag. . The perforation 12 is formed to bend from the vicinity of the first broken line 22 toward the upper side of the bag body 10, and after the upper end portion of the holder 20 is cut off by the perforated line 12, the protruding portion 28 remains in the vicinity of the first broken line. ing. Due to the presence of the protruding portion 28, after the coffee is extracted with the drip bag 1A, the protruding portion 28 can be picked to remove the drip bag 1A from the cup.

  The net plane dimensions of the bag body 10 excluding the portion cut by the perforation 12 are 70 to 110 mm in width W1 and 50 to 70 mm in height H1 for a normal cup having an opening diameter of about 60 to 105 mm. It is preferable that

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

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

(First line)
The holder 20 is equally divided into a front part 20a and a back part 20b by a first fold line 22, and forms a front and a back of the drip bag. As will be described later, in the manufacturing process of the drip bag 1A, the thin plate-like material forming the holder 20 and the water filterable sheet forming the bag body 10 are folded at the first fold line 22 in a superimposed state. The first broken line 22 overlaps the side of the bag body 10 over its entire length.

In the present invention, a plurality of broken lines including the first broken line 22 are formed by perforations, half cuts, etc., but when a force is applied to crush both side edges of the holder as will be described later, As these broken lines, a perforation composed of a short tie having a length of 0.5 to 1.5 mm and a long cut having a length of 5 to 30 mm can be formed as the broken line so that the holder has an opening shape. On the other hand, regarding a broken line that should be formed easily, it is preferable that one broken line is a long cut and short ties at both ends thereof, and the tie is shortened as long as it is not broken by bending.
The width of the front portion 20a and the back portion 20b of the holder 20 is formed to be substantially equal to the width W1 of the bag body 10 to be slightly narrower than the width W1 of the bag body 10 respectively.

(Transverse line and strip area)
The holder 20 has a transverse line 23 extending horizontally along the opening (perforation 12 for opening) of the bag body 10 in the direction of the first fold line 22 from the center in the width direction of the front part 20a and the back part 20b. Of the region adjacent to the upper and lower sides of the horizontal cut line 23, the region opposite to the second broken line 24, that is, the region between the horizontal cut line 23 and the opening perforation 12 is the bag body vertical direction. This is a belt-like region 21 having no broken line or broken line.

  In the present invention, the first broken line side end 23a of the transverse line 23 may or may not reach the first broken line 22. As shown in FIG. 1, since the transverse line 23 does not reach the first broken line 22, the opening shape of the drip bag 1 </ b> A spans the front part 20 a and the rear part 20 b of the holder, and the second broken line and the third broken line. A sufficient area A1 (a hatched portion in FIG. 2) that is surrounded and acts as one surface can be secured, and the surface is stretched between the front portion 20a and the rear portion 20b of the holder 20. This is preferable because the front portion 20a and the back portion 20b approach each other to prevent the opening from closing and the opening shape of the holder 20 is stabilized. Further, the first broken line side end portion 23a of the transverse line 23 is located in the vicinity of the first broken line 22, but since it does not reach the first broken line 22, each of the front portion 20a and the rear portion 20b of the holder 20 is provided. Because of the band-shaped region 21, a larger radius of curvature is formed in the opening shape of the bag body 10, so that the opening shape can be made closer to a circle and the opening area can be increased. On the other hand, the transverse line 23 may reach the first broken line 22. In this case, the belt-like region 21 of the front part 20a and the back part 20b of the holder 20 is continuously formed as one belt-like region.

  An end 23 b of the transverse line 23 on the side opposite to the first broken line 22 is in the center in the width direction of the front part 20 a or the back part 20 b of the holder 20. The end 23b may be closer to the first broken line 22 than the center line 20c of the width of the front part 20a or the rear part 20b of the holder 20, or may be on the opposite side.

  The width L1 of the cross-cut line 23 in the width direction of the bag body is preferably 5 to 65% of the width of the front portion 20a or the back portion 20b of the holder 20. When the end portion 23b of the transverse line 23 is positioned in the vicinity of the fifth broken line 29 so that the length of the transverse line 23 is made as long as possible in each of the front part 20a and the back part 20b of the holder 20, the opening shape of the bag body 10 is obtained. Can be as close to a circle as possible. On the other hand, when the length L1 of the transverse line 23 becomes excessively short, it is difficult to obtain the effect of bringing the opening shape of the bag body close to a circle in top view in the opening shape of the drip bag 1A.

  Further, the distance between the transverse line 23 and the perforation 12, that is, the length L2 of the drip bag in the vertical direction of 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 by utilizing the stiffness of the thin plate material forming the holder 20, and if it is too long, the vertical length of the holder 20 itself becomes too long. It is not preferable.

(Second line)
In the drip bag 1 </ b> A of the present embodiment, the second broken line 24 extends from the middle part of the transverse line 23 to the bottom side of the bag body 10. In addition, as shown in FIG. 9, you may extend the 2nd broken line 24 to the opening part side of a holder in this invention.

  In the present embodiment, the lower end of the second broken line is at the first broken line side end of the broken line that forms the upper side of the latching piece 32. Thus, when the drip bag 1A is opened, the region A1 surrounded by the second fold line and the third fold line is stretched between the front and back portions of the holder between the front and back portions of the holder. This makes it easier to fix the opening shape of the holder.

  The second polygonal line 24 may be parallel to the first polygonal line 22 or may be skewed. However, in the case of skewing, the distance between the second polygonal line 24 and the first polygonal line 22 is It is preferable to extend from the start point 24a of the two broken lines toward the end point 24b. In particular, from the viewpoint of stabilizing the opening shape of the holder 20, it is preferable that the second broken line 24 is skewed with respect to the first bent line 22, and the angle θ4 formed by them is 0 ° <θ4 ≦ 60 °.

  Further, the second broken line 24 is formed of a thin plate-like material that forms the holder 20 by holding the both sides of the drip bag with one hand and applying a force to crush the drip bag when using the drip bag 1A. It is preferable that the second bent line 24 is formed of perforations formed by short ties at one end and a single long cut between the two bent lines 24 so that the second bent line 24 is bent. In addition, the length of the tie of this portion can be shortened as long as it is not broken by bending, and can be set to 0.5 mm or less depending on the thin plate material forming the holder 20.

(Third line)
From the lower end (end point 24b) of the 2nd broken line 24, the 3rd broken line 25 which goes to the 1st broken line side is formed.

  A region A1 that acts as a single surface surrounded by the second and third fold lines across the front and back portions of the holder is caused to act between the front and back portions 20a and 20b of the holder 20. From the viewpoint of stabilizing the opening shape of the holder 20, the third broken line 25 preferably reaches the first bent line 22, and is preferably inclined with respect to the width direction of the bag body 10. . The angle θ3 formed by the third bent line 25 and the first bent line 22 may be an acute angle or an obtuse angle. However, when the angle θ3 is an acute angle as shown in FIG. Since the opening shape of the holder 20 is maintained even if it rises, it is preferable.

  As shown in FIG. 2, in the opening shape of the drip bag, a discontinuous step 38 is formed at the boundary between the strip-like region 21 above the transverse line 23 and the vicinity of the second broken line 24 below it. . By this step 38, the belt-shaped region 21 is curved to bring the opening shape of the bag body 10 close to a circle when viewed from above, and the opening shape of the drip bag is stabilized by bending the second fold line 24 and the third fold line 25. In order to achieve both, it is preferable not to stick the holder 20 and the bag body 10 so that the above-described step can be formed in the region in the vicinity of the transverse line 23.

(Fourth 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 cut line 33 forming the latching 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 on the side opposite to the transverse line or 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 polygonal line 26 extends between the front part 20a and the rear part 20b of the holder 20 between the front part 20a and the rear part 20b. This contributes to stabilizing the opening shape of the holder 20 by acting so as to be stretched.

  In the drip bag 1 </ b> A of the present embodiment, the upper end of the fourth broken line is at the first broken line side end of the broken line that forms the lower side of the latching piece 32. Thus, when the drip bag 1A is opened, the region A1 surrounded by the second fold line and the third fold line is stretched between the front part and the back part of the holder between the front part and the back part of the holder. This makes it easier to fix the opening shape of the holder.

  The angle θ5 formed by the fourth broken line 26 and the first bent line 22 is preferably larger than 0 ° (that is, the distance between the fourth bent line 26 and the first bent line 22 becomes narrower toward the bottom of the bag body).

  The fourth polygonal line 26 may be parallel or oblique to the first polygonal line 22, but from the point of stabilizing the opening shape of the drip bag 1A, the distance between the fourth polygonal line 26 and the first polygonal line 22 is: It is preferable to make the 4th broken line 26 slant so that it may become narrow toward the bottom part side of the bag main body 10, and especially the angle (theta) 5 which the 4th broken line 26 and the up-down direction of the bag main body 10 make is 0 degree-60 degrees. It is preferable to do.

(Diagonal line)
The drip bag 1A includes a diagonal fold line extending from the central portion in the width direction to the area opposite to the first fold line 22 from the opening of the bag body 10 to the bottom side in each of the front portion 20a and the back portion 20b of the holder 20. Is preferably provided. In particular, a plurality of oblique fold lines 29, 30 are provided in this region, and among the oblique fold lines 29, 30, a fifth fold line 29 near the center line 20c of the width of the front portion 20a or the back portion 20b of the holder 20 and the upper and lower sides of the bag body When the angle formed by the direction is θ1, and the angle formed by the sixth broken line 30 outside the fifth folded 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 that By defining the angles θ1 and θ2 as described above, the fifth side can be obtained simply by holding the both side edges of the holder 20 with one hand and applying a force to crush the holder in order to make the drip bag 1A open. Both the fold line 29 and the sixth fold line 30 are bent, and the opening shape of the bag body 10 can be made closer to a circle when viewed from above.

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

  When the angle θ2 of the sixth broken line 30 is zero, that is, when the sixth folded 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 force is applied so as to squeeze the holder 20 from the portion, it is not preferable because only the sixth broken line 30 is easily bent without the fifth bent line 29 being bent.

  Further, when the angles θ1 and θ2 become negative, that is, when the fifth fold line 29 and the sixth fold line 30 are inclined so as to approach the center line 20c from the lower side to the upper side of the holder 20, the opening of the bag body 10 is formed. This is not preferable because twisting occurs and the opening of the opening is reduced.

  In the drip bag 1 </ b> A of the present embodiment, the 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 slanted so that the distance between the seventh broken line 31 and the center line 20c is widened toward the bottom side of the bag body. For this reason, the fifth broken line 29, the seventh broken line 31, and A polygonal bent line is formed. By providing such a bent line, the opening shape of the drip bag can be made symmetrical in a front view, and the opening shape of the bag body as a whole can be made more circular in a top view.

(Hanging piece)
In the lower regions of the front part 20a and the back part 20b of the holder 20, two latching pieces 32, 34 formed so as to be able to be caused by the cut lines 33, 35 from the bag body 10 are juxtaposed. In the drip bag 1A of the present embodiment, the end portions on the first broken line 22 side of the two hooking pieces 32 and 34 are continuous with the remaining portion of the holder 20 and cannot be raised. In particular, in the latching piece 32 on the first broken line side, the end part forming the upper side of the latching piece 32 becomes the lower end of the second bent line 24, and the end part forming the lower side of the latching piece 32 is the fourth bent line 26. Since it is the upper end, when opening the drip bag, a force is applied so as to crush the holder 20 from both side edges of the holder 20, and an area A1 surrounded by the second fold line 24 and the third fold line 25 is the holder The latching piece 32 protrudes from the surface of the bag body 10 at the same time as it becomes one surface across the front portion and the rear portion.

  On the other hand, in the present invention, the latching piece 34 on the opposite side to the first folding line is opposite to the first folding line 22 in the latching piece 34 far from the first folding line 22 as in the drip bag 1B shown in FIG. It may be formed incapable of being caused by the end portion.

  The two latching pieces 32, 34 have projecting portions 32 a, 34 a that project toward the bottom side of the drip bag 1 </ b> A at the end portions on the side away from the bag body 10. Further, the sides 32b and 34b on the bottom side excluding the protruding portions 32a and 34a extend in the width direction of the holder 20, and the positions of the sides 32b and 34b in the vertical direction of the holder 20 are aligned. Here, the side 32b on the bottom side of the latch piece 32 on the first broken line side is longer than the side 34b on the bottom side of the other latch piece 34. As a result, the drip bag can be easily hooked even on a cup having a large opening diameter.

  In addition, it is preferable that the above-described broken lines and broken lines in the holder are formed symmetrically about the first broken line 22 in a state where the first folded 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 both side edges of the holder 20 are grasped with one hand, and a light force is applied so as to crush the holder 20 as shown in FIG. Thereby, the bag body 10 opens widely in a shape close to a circle when viewed from above, and the latching pieces 32 and 34 protrude from the surface of the bag body 10.

  Therefore, as shown in FIG. 2, the drip bag retaining pieces 32 and 34 are hooked on the upper edge of the cup 100, and hot water is 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 bag body 10 is maintained in a shape close to a circle by the curved belt-like region 21.

(Drip bag manufacturing method)
As a manufacturing method of the drip bag 1A, as shown in FIG. 5, there is prepared a sheet material 40 with a holder in which holders 20 are arranged and adhered to a sheet 41 of a long water-permeable filterable sheet at predetermined intervals. 6 is formed into a cylindrical shape by welding to the left and right sides 11c of the bag body 10, and the upper side of the bag body 10 as shown in FIG. 11a and the lower side 11b are also welded sequentially, and the bag body 10 is filled with the contents to continuously manufacture the drip bags, and the drip bags connected vertically are cut off to obtain individual drip bags 1A. Alternatively, fusing is also performed simultaneously when the upper side 11a and the lower side 11b of the bag body 10 are welded, and the drip bag 1A separated individually is continuously manufactured.

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

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

  Further, in the drip bag 1A shown in FIG. 1, the second folding line 24 is provided on the bottom side of the bag body of the transverse line 23. For example, the second folding line 24 is transversed as in the drip bag 1D shown in FIG. You may provide in the bag main body opening part side of the line 23. FIG. Also in this figure, the holder 20 is attached to the bag body 10 at a portion filled with diagonal lines.

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

  Further, in the drip bag 1 </ b> D, the transverse line 23 is formed slightly obliquely with respect to the upper side 11 a of the bag body 10 in the center portion of the holder 20. Thus, in the present invention, the transverse line 23 extending in the bag body width direction does not have to be strictly horizontal, and it only needs to extend in the width direction of the bag body toward the first broken line 22. When the transverse line 23 is formed obliquely, the angle θ6 formed by the transverse line 23 and the horizontal line is not particularly limited.

  The seal strength of the upper side 11a of the bag main body 10 of the drip bag 1D is weaker than the seal strength of the lower side 11b and the side 11c, and the seal of the upper side 11a is easily formed. In addition, a knob 39 is attached to the center of the bag body in the width direction and directly below the upper side 11a. The lower part 39 a of the knob piece 39 can be raised from the bag body 10.

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

  Next, similarly to the drip bag 1 </ b> A described above, the side edges of the holder 20 are gripped with one hand, and light force is applied so as to crush the holder 20. Accordingly, as shown in FIG. 11, the bag body 10 has an opening shape of the bag body 10 that is close to a circle and opens widely, and the latching pieces 32 and 34 protrude from the bag body 10. Further, an area A1 surrounded by the second fold line 24 and the third fold line 25 respectively formed on the front surface 20a and the back surface 20b of the holder 20 is a single surface extending over the front surface 20a and the back surface 20b of the holder 20. It stretches between the front part 20a and the back part 20b, and the opening shape of the holder 20 is fixed. Further, the bent shape of the second broken line 24 and the transverse line 23 are separated by a discontinuous step 38, and in the region adjacent to the upper and lower sides of the transverse line 23, the side opposite to the second broken line 24 is in the vertical direction of the bag body. There is a belt-like region 21 having no broken line or broken line. Therefore, in the opening shape of the drip bag 1D, the belt-like region 21 is curved and protrudes due to the stiffness of the thin plate material forming the belt-like region 21, and the opening shape of the bag body is stabilized. When the knob piece 39 is provided in the opening of the bag body 10 as in the present embodiment, it is difficult to secure a band-like region on the opening side of the horizontal cut line 23, but the band-like region 21 is provided below the horizontal cut line 23. It can be secured easily.

  As shown in FIG. 11, the latching pieces 32, 34 of the drip bag 1 </ b> D are latched on the upper edge of the cup 100, and hot water is 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 region A1 surrounded by the second fold line 24 and the third fold line 25 as described above, and is due to the stiffness of the thin plate material forming the band-like region 21. The opening shape remains curved, and the opening of the bag body does not sag after pouring.

  Although the drip bag in which the bag body 10 is filled with coffee powder has been described above, 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. You may fill tea leaves, such as black tea and green tea, Chinese medicine.

  The present invention also includes a drip bag 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 opened, and a user arbitrarily puts an extraction material into the bag body to obtain an extract.

1A, 1B, 1C, 1D Drip bag 10 Bag body 11a Upper side 11b Lower side 11c Side side 11d Side side (ring)
12 Perforation 20 Holder 20a Front portion 20b Rear portion 20c Center line 21 Strip-like region 22 First broken line 23 Cross-cut line 23a First cut-line side end portion 23b of the cross-cut line 24b 2 fold line 24a start point 24b end point 25, 25 'third fold line 26 4th fold line 27 lower edge of holder 28 protrusion 29 fifth fold line (diagonal fold line)
30 6th polyline (diagonal polyline)
31 7th broken line 32 latching piece 32a protrusion part 32b side on the bottom side 33 cutting line 34 latching piece 34a protrusion part 34b side on the bottom side 35 cutting line 38 step 39 pinch piece 39a pinch piece lower part 40 sheet with holder Original fabric 41 Original fabric of water-permeable filterable sheet 50 Extraction material 100 Cup A1 region H1 Bag body height L1 Length of transverse line L2 Vertical length of drip bag of strip-like region W1 Width of bag body

Claims (8)

A drip bag comprising a bag body formed from a water-permeable filter sheet and having an upper end opened, and a holder formed of a thin plate material and provided on the outer surface of the bag body,
The holder is folded in half at the front and back portions at the first fold line, and the first fold line overlaps the side of the bag body,
A transverse line extending toward the first broken line at the center in the width direction of the holder in each of the front part and the rear part,
Has a second fold line that extends from the transverse line to the opening or lower side of the holder, does not reach the edge of the holder, and a third fold line that extends from the end of the second fold line opposite the transverse line to the first fold line side And
Of the region adjacent to the upper and lower sides of the horizontal cut line, in the region opposite to the second broken line, there is a band-like region having no broken line and broken line in the bag body vertical direction,
The drip bag which has the latching piece formed in the lower area | region of the front part and back part of a holder so that it can be raised from a bag main body.   The drip bag according to claim 1, wherein the transverse line is a horizontal line extending along the opening of the bag body, and the second broken line extends from the horizontal line to the lower side of the holder.   The drip bag according to claim 2, wherein the lower end of the second broken line is at the first bent line side end of the cut line that forms the upper side of the latching piece.   The drip bag according to any one of claims 1 to 3, further comprising a fourth fold line extending from an edge or a lower side forming the opening of the holder toward an end of the second fold line opposite to the transverse line or the vicinity thereof.   5. The drip bag according to claim 4, wherein the fourth broken line extends from the lower side of the holder to the end of the broken line forming the latch piece on the bottom side of the bag body, and the angle formed between the fourth folded line and the first folded line is greater than 0 °. .   The transverse line extends in the approximate width direction of the bag body, the second broken line extends from the first broken line side end of the transverse line to the opening side of the holder, and the fourth broken line extends from the edge forming the opening of the holder. The drip bag according to claim 4 or 5. Each of the front portion and the rear portion has a plurality of diagonal fold lines extending from the opening portion of the bag body to the bottom side in the region opposite to the first fold line from the center in the width direction of the holder. Among them, an angle θ1 formed by the fifth broken line on the center line side of the width of the front part or the rear part of the holder and the up-and-down direction of the bag body, and a sixth broken line on the outer side in the width direction of the bag body from the fifth broken line The angle θ2 formed by the vertical direction of the bag body is 0 ° <θ2 ≦ θ1
The drip bag according to any one of claims 1 to 6.   The drip bag according to any one of claims 1 to 7, wherein the bag body is filled with an extraction material.

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