JP2010143601A - Water-permeable bag - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water-permeable bag which can easily be fixed to a container with a closed annular handle and is useful for extracting tea or the like. <P>SOLUTION: The water-permeable bag 1 with an open top edge is provided, and in the neighborhood of this top edge, a tearing guide extending in the same direction as the top edge is provided, and by tearing the bag 1 along the guide, a handle 8 is formed. As the handle 8 has two free ends 41A and 41B, the handle 8 is easily bound to the container 21 with the closed annular handle 24 such as a mug cup. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a water-permeable bag suitable for use in making tea and coffee or making soup stock.

  Conventionally, a tea bag has been used that can be attached to a water-permeable bag containing tea leaves to form a hanging string, and can be taken in and out of a tea cup, teapot or the like without soiling hands.

  In manufacturing a conventional tea bag with a thread, it is necessary to handle materials having completely different shapes such as a bag and a thread, so that the process becomes complicated and the manufacturing apparatus becomes unavoidable. In addition, the manufactured tea bag may interfere with the yarn during packaging or may come off during use.

  In addition, since a conventional tea bag with a thread is sealed in a bag containing tea leaves, and one end of the thread is fixed to the sealed part, the hanging string is free. Since it has only one end, it is unsuitable for fixing to tea cups and teapots. For this reason, at the time of extraction, there is a possibility that the hanging string enters the cup or the teapot and it becomes difficult to take out the bag. Furthermore, since such tea bags enclose tea leaves in a bag, it is difficult to ensure a space for the tea leaves to sufficiently spread in the bag. By limiting the contact between tea leaves and hot water, the efficiency of tea extraction is lower than when tea leaves are placed directly in the teapot. If the efficiency of tea extraction is low, it takes time to put tea, and in tea leaves such as black tea that can obtain a better flavor by extracting it with hot water in a short time, it is the cause of impairing the tea taste Become.

  In Patent Document 1, the filterable tea bag base paper is folded in half, and the three peripheral edges are sealed by crimping, and incisions are made in one of the crimping portions alternately and parallel to the edge, A device has been disclosed in which a base paper is cut off at the cut when used to make a hanging strap for a tea bag.

  The tea bag according to Patent Document 1 partially overcomes the problems of the tea bag with a thread in that only the tea bag base paper is used as a material.

  However, since the suspension strap of the tea bag of Patent Document 1 is fixed to the tea bag and has only one free end, it is not suitable for fixing to a tea cup or a teapot. In addition, this tea bag also contains tea leaves in the same manner as a conventional tea bag with a thread, so that the extraction efficiency is low.

  The bag described in Patent Document 2 is a bag made of a folded water-permeable sheet, and has a bottom edge as a bottom, a top edge opposite to the bottom edge, and a side edge extending between the bottom edge and the top edge. Among these edges, the top edge is open and the other three edges are closed, and in the vicinity of the top edge, an easy tearing portion is provided in parallel with the top edge. A ring-shaped handle can be formed by tearing an easily tearable portion.

  The bag according to Patent Document 2 not only has the advantage of using only a water-permeable sheet, but also has an annular handle, so it is fixed when hooked on a teapot having a rod-like handle. Can be very convenient. In addition, since this bag has an open top edge and an opening, the bag has a wide space in which an extraction object such as tea leaves can come into contact with a liquid such as hot water, and the extraction efficiency is very good. Furthermore, since hot water can be poured from the opening, it is also useful for paper drip coffee.

  However, the bag of Patent Document 2 is unsuitable for fixing to a handle when extraction is performed using a container having a closed annular handle fixed to the container at both ends.

In recent years, there has been an increasing demand for more delicious tea, coffee and the like in a simpler manner. In particular, it is desired to use tea containers and mugs to make tea for one person, but these containers often have closed annular handles. A water-permeable bag that can be fixed to a container and used is convenient when the user is busy because the user does not need to keep the bag during the extraction time. Further, when hot water is poured from the opening of the bag, the bag that cannot be fixed to the container is very difficult to use because one hand is closed to hold the bag.
Japanese Utility Model Publication No. 56-88640 Japanese Patent No. 3675749

  Accordingly, an object of the present invention is to provide a water-permeable bag that can be easily fixed to a container having a closed annular handle and is useful for extracting tea or the like.

  In order to solve the above problems, a water-permeable bag provided by the present invention is as follows. That is, the water-permeable bag has a longitudinal direction and a transverse direction perpendicular to the longitudinal direction; an inner surface and an outer surface, and the water-permeable first and second sheets that are overlapped with each other so that the inner surfaces face each other. Portions; the laterally extending top and bottom edges; and the longitudinally extending first and second side edges; and in the vicinity of the top edge, the lateral direction in each of the first and second sheet portions. Having first and second tear guides extending to The first and second sheet portions are closed at the bottom edge and the first side edge and open at the top edge, and the second side edge is in the vicinity of the first and second tear guides from the bottom edge Is closed. The first and second tear guide portions extend from the inside of the first side edge to the outside of the second side edge in the lateral direction. The water-permeable bag is characterized in that the second side edge opens from the first and second tear guide portions to the top edge. A string that has two free ends by tearing the first and second sheet portions with the first and second tear guides and is connected to the first side edge between the two free ends A shaped handle is formed.

  The present invention also provides the following water-permeable bags. That is, the water-permeable bag has a longitudinal direction and a transverse direction perpendicular to the longitudinal direction; an inner surface and an outer surface, and the water-permeable first and second sheets that are overlapped with each other so that the inner surfaces face each other. Portions; the laterally extending top and bottom edges; and the longitudinally extending first and second side edges; and in the vicinity of the top edge, the lateral direction in each of the first and second sheet portions. Having first and second tear guides extending to The first and second sheet portions are closed at the bottom edge, the first side edge and the second side edge and open at the top edge. The first and second tear guide portions extend from the inside of the first side edge to the outside of the second side edge in the lateral direction. The water-permeable bag has a cutting guide portion that extends from the first or second tear guide portion to the outside of the top edge in the first or second sheet portion. The second sheet portion is formed so as not to be substantially split in the longitudinal direction. The first and second sheet portions are torn by the first and second tear guide portions, and then the longitudinal guide portion is cut between the first and second tear guide portions and the top edge at the cutting guide portion. As a result, a string-like handle having two free ends and connected to the first side edge between the two free ends is formed.

  The water-permeable bag provided in the present invention is provided with a tear guide portion extending in the lateral direction in the same manner as the top edge in the vicinity of the open top edge, and by tearing the bag at the tear guide portion. A handle is formed. Since the handle has two free ends, it is easy to tie the handle to a container such as a mug with a closed annular handle.

  A water-permeable bag according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a plan view of a water-permeable bag 1 of the present invention, and FIG. 2 is a view taken along the line II-II in FIG. 1, but the thickness of the first sheet portion 1A and the second sheet portion 1B. Is exaggerated.

  As shown in FIGS. 1 and 2, the bag 1 includes water-permeable first and second sheet portions 1A and 1B having an inner surface and an outer surface, and the first and second sheet portions 1A and 1B are opposed to each other on the inner surface. Are superimposed on each other. The bag 1 has a top edge 2 and a bottom edge 3 extending in the transverse direction X, and a first side edge 4 and a second side edge 5 extending in the longitudinal direction Y. The first and second sheet portions 1 </ b> A and 1 </ b> B are joined to each other at the first joint 11 at the first side edge 4 and the second joint 12 at the second side edge 5 to form the bag 1. In this specification, 1st sheet part 1A and 2nd sheet part 1B mutually "join" that 1st sheet part 1A and 2nd sheet part 1B peel during use of bag 1. It means being connected so that there is no.

  In the vicinity of the top edge 2, first and second tear guide portions 6A and 6B parallel to the top edge 2 are positioned in the lateral direction X and the longitudinal direction Y on the first and second sheet portions 1A and 1B, respectively. Are formed to match. The first and second tear guide portions 6 </ b> A and 6 </ b> B extend from the inside of the first joint portion 11 to the outside of the second side edge 5 in the lateral direction X. In the present specification, the “tear guide portion” is a portion to which means for facilitating tearing of the bag 1 in the lateral direction X is applied.

  Between the top edge 2 and the first and second tear guide portions 6A and 6B, first and second zones 40A and 40B having a width W are formed, respectively. The first zone 40A and the second zone 40B are joined to each other at the first joint 4 at the first side edge 4, but the second side edge 5 is not joined and can be separated from each other.

  FIG. 3 shows the first and second tear guides by pinching the first and second zones 40A and 40B in the region 13 (FIG. 1) in the vicinity of the second side edge 5 and pulling them in the direction indicated by the arrow P (FIG. 1). It is a perspective view of the bag 1 torn by the parts 6A and 6B. Here, the first and second zones 40A and 40B form a string-like handle 8 having two free ends 41A and 41B. Since the first and second tear guide portions 6A and 6B are formed from the inside of the joint portion 11 in the lateral direction X, the first side edge 4 is not torn beyond the joint portion 11. Therefore, the handle 8 is connected to the first side edge 4 between the two free ends 41A and 41B.

  FIG. 4 is a view showing a use state of the bag 1 with respect to the container (mug) 21. As illustrated, the bag 1 can be easily fixed to the container 21 by connecting the handle 8 to the closed annular handle 24. In the present specification, “closed annular handle” means a handle such as a tea cup, a coffee cup, a mug cup, an earthen bottle, a kettle, etc., whose both ends are fixed to the container. The first and second sheet portions 1A, 1B are opened at the top edge 2 to form a large opening 14. From this opening 14, the extraction object 22 can be easily put. The bag 1 is put into a container 21 filled with the liquid 23, or poured into the container 21 and then poured into the container 23, so that the bag 1 has a wider space than the bag with the top edge 2 closed. The extraction object 22 and the liquid 23 can be brought into contact with each other and can be extracted efficiently.

  The first and second sheet portions 1A and 1B of the bag 1 are preferably water-permeable nonwoven fabrics formed of thermoplastic synthetic fibers. In this case, the first and second sheet portions 1A and 1B are heated. They are joined by methods well known to those skilled in the art, such as seals, sonic seals, and sutures. As the thermoplastic nonwoven fabric, a heat-resistant nonwoven fabric that does not soften even with hot water at 100 ° C. is used. The first and second sheet portions 1A and 1B may be an apertured film formed of a thermoplastic synthetic resin instead of the nonwoven fabric. In this case, the pore diameter does not pass through the extraction object 22, Choose a size that allows water to pass through.

  An example of means for facilitating the tearing of the first and second tear guide portions 6A, 6B is formed so as to pass through the first or second sheet portion 1A, 1B in the thickness direction and to be intermittently aligned in the lateral direction. A plurality of slits. The slit shape may be linear, rectangular, elliptical, circular, or the like. The means for facilitating tearing may be other means instead of the slit.

  In order to prevent the bag 1 from being torn to the outside of the first side edge 4 beyond the joint portion 11 when the bag 1 is torn at the first and second tear guide portions 6A, 6B, the first and / or second sheet. The first and second zones 40 </ b> A and 40 </ b> B may be reinforced by the first side edge 4 by folding the portions 1 </ b> A and 1 </ b> B at the first side edge 4 and welding them at the first joint 11.

  The extraction object 22 may be tea leaves such as black tea, green tea, hoji tea, oolong tea, and may be ground coffee beans, shavings, dried fish, kelp, spices, herbs, bouquet garni and the like. The liquid 23 may be hot water or water, and may be other liquids such as milk, liquor and oil.

  In the embodiment shown in FIGS. 1 to 4, the first and second sheet portions 1 </ b> A and 1 </ b> B of the bag 1 are formed by bending one sheet at the bottom edge 3. However, in the present invention, the first and second sheet portions 1A and 1B may be individual sheets, and are formed by bending one sheet at an edge other than the bottom edge. Also good.

  Each of the first and second sheet portions 1A and 1B may be a stack of one or a plurality of sheets.

  In the bag 1 of FIG. 1, the first and second zones 40 </ b> A and 40 </ b> B may be temporarily fixed at a portion 13 near the second side edge. By temporarily fixing the first and second sheet portions 1A and 1B at the portion 13, the vicinity of the second side edges 5 of the first and second zones 40A and 40B can be prevented from being folded apart and turned upside down. The appearance of 1 is improved. The temporary fixing at the site 13 can be easily removed either before or after the bag 1 is torn at the first and second tear guide portions 6A and 6B. Such temporary fixing is performed when the first and second sheet portions 1A and 1B are subjected to needle punching at the portion 13 or when the first and second sheet portions 1A and 1B include thermoplastic synthetic fibers. It can be achieved by applying a pressure treatment at a temperature as low as possible.

  FIG. 5 is a view similar to FIG. 2 showing another example of the embodiment. The bag 1 in FIG. 5 has a tack 7 formed on the bottom in a substantially W-shaped cross section. The tack 7 provides a wide space in the bag when in use, and makes good contact between the extraction object and the liquid.

  FIG. 6 is a view similar to FIG. 2 showing another example of the embodiment. In the bag 1 of FIG. 6, the first sheet portion 1A is folded back to the first tear guide portion 6A along the top edge 2 of the bag 1, and is doubled in the first zone 40A. The first tear guide portion 6A is provided on the single first sheet portion 1A. This double 1st zone | band 40A is joined over a wide range in parts other than the 1st junction part 11, and has rigidity higher than the 2nd zone | band 40B. Such a bag 1 has the advantage that when the first and second tear guide portions 6A, 6B are torn, the overlapping first zone 40A and second zone 40B can be easily pinched with a finger and can be easily pinched as a handle. Further, the first and second tear guide portions 6A and 6B are easily torn along the highly rigid first zone 40A. In FIG. 6, the first zone 40A is formed by folding and joining the first sheet portion 1A. Instead of this embodiment, the second zone 40B is folded and joined to the second sheet portion 1B. The present invention can also be carried out in the embodiment formed by this. Further, both the first and second zones 40A, 40B may be formed by folding and joining the first and second sheet portions 1A, 1B. Further, the first and / or second zones 40A, 40B may be formed by joining sheets folded more than double.

  FIG. 7 is a view similar to FIG. 1 showing another example of the embodiment. However, in FIG. 7, a part of the first zone 40 </ b> A of the first sheet portion 1 </ b> A is shown in a state of being folded back to the outside of the bag 1. The bag 1 of FIG. 7 is the same as the bag 1 of FIG. 1 except that the first and second zones 40A and 40B have third and fourth tear guide portions 16A and 16B parallel to the top edge 2, respectively. . The third and fourth tear guide portions 16A, 16B are formed in the first and second sheet portions 1A, 1B so that the positions in the horizontal direction X and the vertical direction Y coincide with each other. It extends from the outside of the first side edge 4 to the inside of the second side edge 5. Further, the joint portion 11 is not formed between the third and fourth tear guide portions 16A and 16B and the top edge 2. Therefore, the first and second zones 40A, 40B are not only separable from each other at the second side edge 5, but also the third and fourth tear guide portions 16A, 16B and the top edge 2 at the first side edge 4. Can be separated from each other.

  FIG. 8 shows the first and second zones 40A, 40B as indicated by an arrow R (FIG. 7) pinching between the third and fourth tear guides 16A, 16B of the first side edge 4 and the top edge 2. Pulling in the direction and tearing at the third and fourth tear guide portions 16A and 16B, and pinching at the second side edge 5 and pulling in the direction indicated by the arrow P (FIG. 7), the first and second tear guide portions 6A, It is the same perspective view as FIG. 3 of the bag 1 torn by 6B. Here, the first and second zones 40A, 40B form a string-like handle 8 having two free ends 42A, 42B. The handle 8 is folded at the folded portions 43A and 43B and connected to the first side edge 4 therebetween. The handle 8 of FIG. 8 is about twice as long as the handle 8 of FIG.

  In order to prevent the bag 1 of FIG. 8 from being torn outside the second side edge 5 when the bag 1 is torn at the third and fourth tear guide portions 16A, 16B, the first and / or second sheet portion 1A, The folded portion 43A and / or 43B may be reinforced by folding and welding 1B at the folded portion 43A and / or 43B.

  FIG. 9 is a view similar to FIG. 1, showing yet another example of the embodiment. In the bag 1 of FIG. 9, the bag 1 of the present invention has a bottom edge 3, a first side edge 4, and a second side edge 5 closed, and extends from the first tear guide portion 6 </ b> A to the outside of the top edge 2 in the longitudinal direction Y. 1 is the same as the bag 1 of FIG. In the present specification, the “cutting guide portion” is a portion to which means for facilitating cutting the first and second sheet portions 1A, 1B in the longitudinal direction Y is applied. Here, it is difficult to tear the first and second sheet portions 1 </ b> A and 1 </ b> B in the longitudinal direction Y at portions other than the cutting guide portion 15.

  10 shows that the bag 1 of FIG. 8 is pinched at the second side edge 5 and pulled in the direction indicated by the arrow P (FIG. 9), and is torn by the first and second tear guide portions 6A and 6B. 15 is a view of the bag 1 in which the first band 40A is cut by the cutting guide portion 15 by pinching the portions on both sides in the horizontal direction X (44, 45 shown in FIG. 9) with fingers and pulling them in the opposite directions in the vertical direction Y. 3 is a perspective view similar to FIG. Here, the first and second zones 40A, 40B form a string-like handle 8 having two free ends 44, 45, the handle 8 being between the two free ends 44, 45. It is connected to one side edge 4.

  In the bag 1 shown in FIG. 10, one cutting guide portion 15 exists in the first tear guide portion 6A, but may exist only in the second tear guide portion 6B, and also exists in both. Also good. The cutting guide 15 may be present at any position in the lateral direction X, thereby forming a handle 8 having two ends with an arbitrary distance from the first side edge 4.

  The means for facilitating the cutting of the cutting guide part may be the same as or different from the means for facilitating the tearing of the tear guide part. An example of this means is a plurality of slits formed so as to be intermittently arranged in the longitudinal direction, penetrating the first or second sheet portion 1A, 1B in the thickness direction.

  FIG. 11 is a view similar to FIG. 1 showing another example of the embodiment, but in FIG. 11, the first sheet portion 1 </ b> A and the second sheet portion 1 </ b> B that overlap each other at one corner of the bag 1. And are shown folded. The first side edge 4 and the top edge 2 of the bag 1 that is not folded back are indicated by a two-dot chain line. The bag 1 of FIG. 11 has a top edge 2 closed by a third joint portion 17, and in the first and second sheet portions 1A and 1B, the third joint portion 17 and the first and second tear guide portions 6A and 6B. 5th and 6th tear guide parts 26A and 26B which are parallel to the top edge 2 between each. The fifth and sixth tear guide portions 26A, 26B are formed in the first and second sheet portions 1A, 1B so that the positions in the horizontal direction X and the vertical direction Y coincide with each other. , Extending from the outside of the first side edge 4 to the outside of the second side edge 5. The cutting guide portion 15 extends in the longitudinal direction Y from the first tear guide portion 6A through the fifth tear guide portion 26A to the top edge 2 between the first joint portion 11 and the second joint portion 12. .

  For example, by pinching the bag 1 at the corners of the second side edge and the top edge 2 and pulling the bag 1 in the direction indicated by the arrow P (FIG. 11) and tearing the bag 1 by the fifth and sixth tear guide portions 26A and 26B, When the portion including the portion 17 is cut off, the same bag as the bag 1 shown in FIG. 9 is formed.

  In the embodiment shown in FIG. 11, since all four edges of the bag 1 before use are closed, it is suitable for providing the user with the extraction object 22 sealed in advance. By providing the bag 1 with the extraction object 22 such as tea leaves encapsulated in the bag 1 in advance, the user can easily put tea or the like.

  FIG. 12 is a view similar to FIG. 1 showing another example of the embodiment, but is partially broken for illustration. The bag 1 of FIG. 12 is the same as the bag 1 of FIG. 1 except that it has a third sheet portion 1C formed by folding the first sheet portion 1A outward along the top edge 2 of the bag 1. is there. The third sheet portion 1 </ b> C is connected to the first sheet portion 1 </ b> A at the top edge 2, and extends downward toward the bottom edge 3. In the double portion 30 where the first sheet portion 1A and the third sheet portion 1C overlap, the first and third tear guide portions 6A and 6C are formed on the first sheet portion 1A and the third sheet portion 1C, respectively. Has been. A second tear guide portion 6B is formed in the second sheet portion 1B, and the first to third tear guide portions 6A to 6C are formed so that the positions in the horizontal direction X and the vertical direction Y are coincident with each other. Has been. In the double portion 30, the first sheet portion 1 </ b> A and the third sheet portion 1 </ b> C are joined only at the first and second joining portions 11 and 12 and are not joined at other portions. Accordingly, the first sheet portion 1 </ b> A and the third sheet portion 1 </ b> C form a pocket 31 that closes at the top edge 2 and opens toward the bottom edge 3 on the outside of the bag 1. The bag 1 of FIG. 12 can be used similarly to the bag 1 of FIG. 1 by tearing the first to third tear guide portions 6A to 6C. Instead of such usage, the first to third sheet portions 1 </ b> A to 1 </ b> C are joined at the first and second joining portions 11 and 12 after the extraction object is put into the bag 1 of FIG. 12. The corners 34 and 35 are folded back toward the second sheet portion 1B along the imaginary lines 32 and 33, and then the third sheet portion 1A and 1C are further sandwiched by the second sheet portion 1B. By turning over the sheet portion 1 </ b> C along the top edge 2, the top edge 2 of the bag 1 can be closed. The bag 1 closed in this manner is convenient when the extraction object is not spilled from the bag 1 and is boiled in barley tea, bonito, or bouquet garni in a kettle or pan. The form of a bag having such a pocket is known, for example, from Japanese Utility Model Laid-Open No. 59-138568. In the bag 1 of FIG. 12, the first to third sheet portions 1A to 1C are formed by bending one sheet, but the first to third sheet portions 1A to 1C are two or three sheets. The invention can also be practiced with embodiments formed from individual sheets.

  FIG. 13 is a view similar to FIG. 1 showing another example of the embodiment. The bag 1 in FIG. 13 has a first insertion hole 36A in the first sheet portion 1A, in the vicinity of the first tear guide portion 6A and on the bottom edge 3 side. A second insertion hole (not shown) having the same shape as the first insertion hole 36A is formed in the second sheet portion 1B so that the positions in the horizontal direction X and the vertical direction Y coincide with the first insertion hole 36A. Has been. The second sheet portion 1B is also formed with a second tear guide portion (not shown) so that the positions in the lateral direction X and the longitudinal direction Y coincide with the first tear guide portion 6A. Such a bag 1 is provided with the free ends 41A and 41B of the handle 8 formed by tearing the first tear guide portion 6A and the second tear guide portion, as indicated by phantom lines, after the extraction object is put. By passing at least one through the first insertion hole 36A and the second insertion hole, the top edge 2 can be closed. Such a bag 1 has a feature that tea leaves are not easily spilled even when it is shaken, for example, when water is poured out from water in a plastic bottle. Although the shape of the illustrated example of the first insertion hole 36A is rectangular, the first insertion hole 36A can be changed to an appropriate shape such as circular, elliptical, or linear.

  As described above, since the water-permeable bag of the present invention can be fixed to a container having a closed annular handle, it can be used very conveniently when it is necessary to put tea or coffee in a short time. can do.

The top view of the water-permeable bag concerning this invention. The II-II arrow directional view of FIG. The perspective view of the bag of FIG. 1 in which the handle is formed. The figure which shows the use condition of the bag of FIG. The arrow view similar to FIG. 2 which shows an example of embodiment. The arrow view similar to FIG. 2 which shows another example of embodiment. The top view which shows another example of embodiment. The perspective view of the form at the time of use of the bag of FIG. The top view which shows another example of embodiment. The perspective view of the form at the time of use of the bag of FIG. The top view which shows another example of embodiment. The fracture | rupture top view which shows another example of embodiment. The top view which shows another example of embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bag 1A 1st sheet | seat part 1B 2nd sheet | seat part 2 Top edge 3 Bottom edge 4 1st side edge 5 2nd side edge 6A 1st tear guide part 6B 2nd tear guide part 8 Handle 15 Cutting guide part

Claims (2)

Longitudinal direction and transverse direction perpendicular thereto;
Water permeable first and second sheet portions having an inner surface and an outer surface, and being overlapped with each other such that the inner surfaces oppose each other;
A top edge and a bottom edge extending in the transverse direction, and a first side edge and a second side edge extending in the longitudinal direction; and in the vicinity of the top edge, extending in the transverse direction in each of the first and second sheet portions. , Having first and second tear guides,
The first and second sheet portions are closed at the bottom edge and the first side edge and open at the top edge, and the second side edge is in the vicinity of the first and second tear guide portions from the bottom edge. Closed until
The first and second tear guide portions are water-permeable bags that extend from the inside of the first side edge to the outside of the second side edge in the lateral direction,
The water permeable bag, wherein the second side edge is open from the first and second tear guide portions to the top edge. Longitudinal direction and transverse direction perpendicular thereto;
Water permeable first and second sheet portions having an inner surface and an outer surface, and being overlapped with each other such that the inner surfaces oppose each other;
A top edge and a bottom edge extending in the transverse direction, and a first side edge and a second side edge extending in the longitudinal direction; and in the vicinity of the top edge, extending in the transverse direction in each of the first and second sheet portions. , Having first and second tear guides,
The first and second sheet portions are closed at the bottom edge, the first side edge and the second side edge and open at the top edge;
The first and second tear guide portions are water-permeable bags that extend from the inside of the first side edge to the outside of the second side edge in the lateral direction,
In the first or second sheet portion, the cutting guide portion extending from the first or second tear guide portion to the outside of the top edge,
The water-permeable bag is formed so that the first and second sheet portions do not substantially tear in the longitudinal direction except for the cutting guide portion. .

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