JP2009011420A - Drip bag - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drip bag constituted by arranging a cover sheet on the upper opening portion of a bag body and capable of being manufactured by simple steps substantially similar to the conventional drip bags to which the cover sheet is not arranged. <P>SOLUTION: The drip bag 10A has the bag body 11 formed of a filter sheet 1 having water permeability and filtering property and filled with a material 12 to be extracted, the water permeable cover sheet 3 covering the upper opening portion 15 of the bag body 11, and engaging members 20A engaging the bag body 11 with a container such as a cup 40, the engaging members 20A is comprised of sheetlike materials affixed to the surface of the bag body 11, the edge sides of the filter sheet 1 and the cover sheet 3 are sealed with their inner faces facing each other in the upper opening portion 15 of the bag body 11. <P>COPYRIGHT: (C)2009,JPO&INPIT

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 in a full-fledged paper drip system, the bag body made of a water-permeable filterable sheet is filled with coffee powder, and a latching member is placed on the side of the bag body. Attached one is used (Patent Document 1).

  In addition, in such a drip bag, when the upper end of the bag body is cut to open the pouring spout, the coffee powder filled in the bag body scatters or the coffee powder overflows from the bag body during pouring. In order to prevent the coffee powder from dripping and to impart a steaming effect to the coffee powder during the drip, a water-permeable cover sheet is provided in the upper opening of the bag body (Patent Document 2).

  At the time of manufacturing the drip bag with cover sheet, as shown in FIG. 6A, the latching member 20 is previously stuck to the band-shaped water-permeable filter sheet 1 for the bag body at predetermined intervals. The member-attached filter sheet 2 is bonded to both sides of the belt-shaped cover sheet 3 to produce a wide bonded sheet 4, which is applied to a bag making and filling machine (not shown), and bonded as shown in FIG. 6B. By sealing the both side edges of the sheet 4 together, a seal portion 5 that forms the bottom of the drip bag is formed, and the cover sheet 3 is placed while the filter sheet 1 is opposed to the seal portion 5 on the opposite side. The filter sheet 1 is sealed in the width direction while being pushed in as indicated by an arrow to form a seal portion 6 that becomes one side edge of the drip bag, and then the laminated sheet 4 in a bag shape Is filled with coffee powder 7, and the laminated sheet 4 is sealed again in the width direction to form a seal portion 6 which is the other side edge of the drip bag. The formation of the width-direction seal portion 6 and coffee Repeat filling powder 7. Further, when the seal portion 6 is formed, individual drip bags 10 are obtained by cutting off the portions that have been filled with the coffee powder 7 first. FIG. 7 is a cross-sectional view of the drip bag 10 thus obtained.

JP 2004-230143 A Japanese Unexamined Patent Publication No. 2006-320597

  However, according to the manufacturing method of the drip bag with a cover sheet described above, a step of pasting together the band-shaped filter sheet 2 with the retaining member and the band-shaped cover sheet 3 is required, and the conventional drip without the cover sheet is required. Complicated with the bag manufacturing process.

  Moreover, in the drip bag 10 with a cover sheet obtained by the above-mentioned manufacturing method, since the shape of the pouring gate is formed only by pushing the filter sheet, the edge of the pouring port does not become a clean line shape. Furthermore, when the drip is performed, the bottom seal 6 may be peeled off, and the coffee powder 7 may leak from the bag body.

  On the other hand, the present invention is a drip bag provided with a cover sheet in the upper opening of the bag body, and can be manufactured by a simple process substantially the same as a conventional drip bag provided with no cover sheet. An object of the present invention is to provide a drip bag with a clean appearance of the pouring gate.

  The present inventor uses a filter sheet with a hook member attached to a belt-like filter sheet in a specific direction, and the filter sheet with the hook member is folded in the longitudinal direction. Bend the cover sheet on the other hand, fold the belt-shaped cover sheet so that it can be folded in the longitudinal direction, and seal the edge of the filter sheet with the retaining member and the edge of the cover sheet by overlapping these folds. It is not necessary to previously bond the filter sheet with the latching member and the belt-like cover sheet, and the drip bag thus obtained has the edge of the pouring gate between the edge of the filter sheet and the cover sheet. It becomes a clean line shape by becoming a seal part with the edge of the bag, the appearance of the pouring spout is improved, and the extraction material from the bottom of the bag body It has been found that there is no risk of leaks.

That is, the present invention relates to a bag body formed from a water-permeable filter sheet and filled with an extraction material, a water-permeable cover sheet covering the upper opening of the bag body, and the bag body hooked to the container. A drip bag provided with a latching member,
The latch member is made of a thin plate material attached to the surface of the bag body,
Provided is a drip bag characterized in that, at the upper opening of the bag body, the edges of the filter sheet and the cover sheet are sealed to face each other.

Further, the present invention is a method for manufacturing the drip bag described above from a band-shaped filter sheet with a hooking member and a band-shaped cover sheet,
A band-like filter sheet with a hooking member is formed by sticking a hooking member to a belt-like filter sheet at a predetermined interval with the upper side of the drip bag of the hooking member facing the longitudinal edge of the band-like filter sheet. ,
The belt-like filter sheet with the hooking member can be folded in the longitudinal direction, and the band-like cover sheet can be folded in the longitudinal direction while being folded so that the sticking surface of the hooking member is outside. Folded into
Insert the folds of the belt-shaped cover sheet inside the folds of the filter sheet with the belt-like hooking member, seal the edges of these sheets,
Next, these sheets are sequentially sealed in the width direction of the sheet between the latching members attached at predetermined intervals, and the inside of the bag-shaped portion formed by this seal is filled with the extraction material. A drip bag manufacturing method is provided.

  According to the present invention, in industrially manufacturing a drip bag with a cover sheet using a bag making and filling machine, it is not necessary to previously bond a band-shaped filter sheet with a hooking member and a band-shaped cover sheet. A drip bag with a seat can be manufactured at low cost with high productivity.

  In addition, according to the drip bag of the present invention, the edge of the upper opening of the bag body serving as the pouring spout is a seal part between the edge of the filter sheet and the edge of the cover sheet, so that it is a clean line shape. , The appearance is improved.

  Furthermore, according to the drip bag of the present invention, since the bottom portion of the bag body is formed of folded folds and there is no seal portion on the bottom side, there is no possibility that the bottom seal is peeled off and the extraction material spills out.

  Hereinafter, the present invention will be described in detail with reference to the drawings. In each figure, the same numerals indicate the same or equivalent components.

  Fig.1 (a) is a top view of drip bag 10A of one Example of this invention, The figure (b), (c) is explanatory drawing of the use condition, respectively.

  The drip bag 10A includes a bag body 11 made of a water-permeable filter sheet 1, a water-permeable cover sheet 3 covering an upper opening of the bag body 11, and an extraction material 12 filled in the bag body 11. Thus, the latching member 20 </ b> A and the reinforcing piece 21 are attached to the outer surfaces of the two opposing surfaces of the bag body 11.

  Here, examples of the extraction material 12 include tea powder such as coffee powder, green tea, black tea, and herbal tea, Chinese herbal medicine, dashi, and the like.

  The bag body 11 has a rectangular flat bag shape in which a bottom portion 13 is formed from folded folds of the filter sheet 1 and seal portions 14 are formed on both side edges.

  The water-permeable filter sheet 1 that forms the bag body 11 is one in which the extraction material 12 can be leached when the extraction material 12 is poured into the bag body 11 formed by this filter sheet and poured. It can be used in various ways. 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 made of natural fibers such as mulberry, Mitsumata alone or in combination, Papers such as mixed paper made of Manila hemp, wood pulp, polypropylene fiber, etc., and tea bag base paper are known, and these can also be used in the present invention. In particular, it is preferable to contain biodegradable fibers in the filter sheet from the viewpoint of disposal after use of the drip bag. Examples of the biodegradable fiber include polylactic acid, polybutylene succinate, and polyethylene succinate. In addition, when the extraction material is coffee powder, the filter sheet is in direct contact with the coffee powder by adjusting the porosity so that the coffee powder can be given an appropriate steaming effect during drip. Layers that are sparse and non-directly in contact with layers that have a sparse / dense multi-layer structure that is in direct contact with coffee powder. In the non-contact layer, a layer having a reduced content of hydrophobic fibers is preferred (Japanese Patent No. 3694486).

  The water-permeable cover sheet 3 is preferably one that does not leak the extraction material 12 from the inside of the bag body 11 and has good water permeability and high transparency. For example, the nonwoven fabric described in WO2004 / 003277, WO2003 / 048439, etc. Alternatively, a film described in Japanese Patent Application Laid-Open No. 2005-179578 may be used in which holes for water passage are formed.

  In the present invention, as shown in the sectional view of FIG. 2, in the upper opening 15 of the bag body 11, the edge of the filter sheet 1 and the cover sheet 3 is sealed with the inner surfaces 1a and 3a facing each other, The seal portion 16 is an edge portion of the upper opening portion 15. Thereby, the outline of the upper opening part 15 used as a pouring gate becomes one line shape, and an external appearance improves, and usability also improves because a pouring port becomes clear. On the other hand, as shown in FIG. 7, the inner surfaces 1a and 3a of the filter sheet 1 and the outer surface 3b of the cover sheet are opposed to each other without the inner surfaces 1a and 3a of the filter sheet 1 and the cover sheet 3 facing each other. The case where it is sealed, or the aspect in which the outer surface of the filter sheet and the inner surface of the cover sheet are sealed facing each other is not included.

  Further, according to the present invention, since the bottom portion 13 of the bag body 11 is formed of folded folds, there is no seal portion on the bottom side. Therefore, like the drip bag 10 in FIG. There is no risk that the extracted material will leak due to peeling.

  On the other hand, the latching member 20A is provided for latching the bag body 11 to a container such as the cup 40, and is formed from a thin plate-like material such as paper or plastic sheet attached to the surface of the bag body 11. Yes. This thin plate material is also preferably formed from a biodegradable material such as polylactic acid, polybutylene succinate, polyethylene succinate and the like.

  In the present invention, the shape and sticking position of the latching member 20A are not particularly limited as long as the bag body 11 can be stably latched on the cup 40 or the like, but in the drip bag 10A of the present embodiment, the latching member 20A. Are attached to the two outer surfaces of the bag body 11 facing each other. In FIG. 1A, a portion painted with fine dots is a portion attached to the outer surface of the bag body 11, and a portion painted with coarse dots is a portion not attached.

  More specifically, the latching member 20A includes a sticking portion 22, an arm portion 23, and a latching piece 24, which are formed by punching one sheet-shaped material. Here, the lower end of the arm part 23 is continuous with the sticking part 22, the upper end is continuous with the latching piece 24, and the arm part 23 and the latching piece 24 are formed so as to be able to be raised from the bag body 11. . Moreover, the lower end part of the arm part 23 which continues with the sticking part 22 is located in the center part of the width direction of 20 A of latching members.

  The substantially entire surface of the attaching portion 22 is attached to the outer surface of the bag body 11, and this attaching portion has a concave shape surrounding the lower end portion of the arm portion 23 from below and from both sides.

  The latching piece 24 is formed over the entire outer circumference of the latching member 20 </ b> A and is continuous with the center of the upper end of the arm portion 23. Moreover, the latching piece 24 has the hook part 25 which was cut | disconnected from the upper end of the arm part 23 by the line L1, and was extended in the substantially horizontal direction at the upper part both sides. A fold line L2 is formed at the end of the hook portion 25 on the center side of the hook member 20A, and a fold line L3 is formed on the extension line of the fold line L2 below the hook piece 24.

  The reinforcing piece 21 is in a position where it comes into contact with the latching member 20A above and on both sides of the latching member 20A, and is attached to the outer surface of the bag body 11. When the reinforcing piece 21 is formed at a position in contact with the latching member 20A as described above, the latching member 20A and the latching member 20A can be easily formed by punching one sheet-like material at a low cost by suppressing waste of the sheet-like material. It is preferable because the reinforcing piece 21 can be formed at the same time. Further, the reinforcing piece 21 has a belt-like portion along the upper opening 15 of the bag body 11, and a folding line L <b> 4 for folding the belt-like portion into a U-shape is formed in the belt-like portion.

  As a method of using this drip bag 10A, first, as shown in FIG. 1B, the arm portion 23 and the latch piece 24 are caused. Next, as shown in FIG. 1C, the arm portion 23 and the latching piece 24 are further raised in accordance with the diameter of the opening of the cup 40, and the latching piece 24 is hung on the side wall 41 of the cup 40. 24 is bent along the polygonal lines L2 and L3. Accordingly, the hooking portion 25 of the hooking piece 24 is hooked so as to be placed on the opening wall 42 of the cup 40, and the hooking member 20 </ b> A is hooked to the cup 40 very stably. Further, the bag body 11 is pulled in opposite directions from the two opposing surfaces by the arm portion 23, the upper opening 15 is greatly expanded, and the opening shape is favorably maintained by the reinforcing piece 21 having the broken line L4.

  Therefore, the hot water is poured through the cover sheet 3 from the widely opened upper opening 15. Since the upper opening 15 of the bag body 11 is covered with the cover sheet 3, the extraction material 12 does not overflow from the bag body 11 during this pouring, and the extraction material 12 is appropriately steamed. An effect can also be obtained.

  This drip bag 10A can be manufactured as follows. First, as shown in FIG. 3A, a filter member 2 with a latching member is obtained in which a latching member 20A is adhered to a band-shaped filter sheet 1 at a predetermined interval. At this time, the retaining member 20 </ b> A is arranged so that the upper side of the drip bag faces the longitudinal edge of the band-shaped filter sheet 1. In addition, as such a filter sheet 2 with a retaining member, a commercially available filter sheet 2 with a retaining member may be used.

  Next, the belt-shaped filter member 2 with a hooking member is put on a bag making and filling machine (not shown), a fold can be formed in the longitudinal direction, and the hooking member so that the sticking surface of the hooking member 20A is on the outside. The attached filter sheet 2 is folded, and the belt-shaped cover sheet 3 is also put on the bag making and filling machine and folded so that a fold can be formed in the longitudinal direction. Here, as the bag making and filling machine, a sheet bending means such as a guide or a sailor is added to a conventional drip bag without a cover sheet, and the sheet is sealed in the longitudinal direction. It is possible to use one that can be performed in parallel in a row.

  Then, as shown in FIG. 3B, the folds of the cover sheet 3 are inserted inside the folds of the filter sheet 2 with the retaining member, and as shown in FIG. 3C, the edges of these sheets 2, 3 They are sealed to form a seal portion 16 of the upper end opening 15 of the drip bag 10A, and trimming is performed as necessary.

  Next, these sheets 2 and 3 are sealed in the width direction of the sheets 2 and 3 between the latching members 20A attached at predetermined intervals, whereby the side edge seal portion 14 of the drip bag 10A is sealed. Form. Further, the extraction material is filled into the bag-shaped portion formed by the seal portion 14. Thus, the sealing in the width direction of the sheets 2 and 3 and the filling of the extraction material 12 are sequentially repeated. And individual drip bag 10A is obtained by cut | disconnecting up and down with the seal part 14. FIG.

  Thus, according to the manufacturing method of this drip bag 10A, without using the conventional bag making and filling machine, and without sticking the band-like filter sheet 2 with the retaining member and the belt-like cover sheet in advance, It becomes possible to easily obtain the drip bag 10A with a cover sheet.

  The drip bag of the present invention can take various forms.

  For example, like the drip bag 10B shown in FIG. 4, the latching piece 30 which has the latching recessed part 31 instead of the above-mentioned latching member 20A of FIG. 1 was formed so that it could raise like an arrow. The member 20B may be provided. Further, as long as the bag body 11 can be hooked on the cup 40, the hooking member may be provided on only one surface of the bag body 11.

  Further, as in the drip bag 10C shown in FIG. 5A, the latching member 20C provided on the two opposing surfaces of the bag body 11 opens in a V shape when the bag body 11 is latched on the cup 40. It may be. FIG. 2B is a plan view of the drip bag 10C. In this drip bag 10C, the upper ends of a pair of hooking members 20C attached to the opposing outer surfaces of the bag body 11 are extended to one side edge 17 of the bag body 11, and this extension is performed. The edge 26 is bonded to the seal portion 14 on the side edge of the bag body 11. Then, a pair of latching pieces 32 and 33 are respectively provided on the adhesive portion 27 side and the opposite side thereof from the pasting surface (the portion painted with dots in FIG. 5B) of the latching member 20C and the bag body 11. It is formed to be able to cause.

  When the drip bag 10C is manufactured according to the method shown in FIGS. 3A to 3C, the edges of the filter sheet 2 with the retaining member and the cover sheet 3 are sealed, and then the sheets 2 and 3 are moved in the width direction. When the sealing portion 14 on the side edge of the drip bag is formed (see FIG. 3C), the edges 26 of the pair of hooking members 20C are also sealed at the same time, so that they can be manufactured in a simple process. .

  INDUSTRIAL APPLICATION This invention is useful as an extraction tool which drips various extraction materials including coffee powder and obtains the extract easily.

It is the top view (a) of the drip bag 10A of an Example, and a perspective view (b) (c) of use condition. It is sectional drawing of the drip bag of an Example. It is explanatory drawing of the manufacturing method of the drip bag of an Example. It is explanatory drawing of the manufacturing method of the drip bag of an Example. It is explanatory drawing of the manufacturing method of the drip bag of an Example. It is a perspective view of the use condition of the drip bag 10B of an Example. It is the perspective view and top view of the use condition of drip bag 10C of an Example. It is explanatory drawing of the manufacturing method of the conventional drip bag with a cover sheet. It is explanatory drawing of the manufacturing method of the conventional drip bag with a cover sheet. It is sectional drawing of the conventional drip bag with a cover sheet.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Filter sheet 1a Inner surface of filter sheet 2 Filter sheet with latch member 3 Cover sheet 3a Inner surface of cover sheet 4 Laminated sheet 5 Seal part 6 Seal part 7 Coffee powder 10 Conventional drip bag 10A, 10B, 10C Drip of Example Bag 11 Bag body 12 Extraction material 13 Bottom 14 Side edge seal 15 Upper opening 16 Upper edge opening seal 17 Side edges 20, 20A, 20B, 20C Latching member 21 Reinforcing piece 22 Adhering part 23 Arm part 24 Latching piece 25 Hooking part 26 Edge 27 Adhesive part 30 Latching piece 31 Locking recess 32 Latching piece 33 Latching piece 40 Cup 41 Side wall 42 Opening wall

Claims (4)

A bag body formed from a water-permeable filter sheet and filled with an extraction material inside, a water-permeable cover sheet covering the upper opening of the bag body, and a latching member for latching the bag body on the container A drip bag
The latch member is made of a thin plate material attached to the surface of the bag body,
A drip bag characterized in that the edge of the filter sheet and the cover sheet are sealed to face each other at the upper opening of the bag body.   The drip bag according to claim 1, wherein the bottom of the bag body is formed from a fold mountain of a filter sheet.   The latching member is each affixed on the two outer surfaces which oppose, Each latching member is provided with the latching piece formed so that it could be raised from the bag main body surface. Drip bag. A method for producing the drip bag according to claim 1 from a band-shaped filter sheet with a retaining member and a band-shaped cover sheet,
A band-like filter sheet with a hooking member is formed by sticking a hooking member to a band-like filter sheet at a predetermined interval with the upper side of the drip bag of the hooking member facing the longitudinal edge of the band-like filter sheet. ,
The belt-like filter sheet with the hooking member can be folded in the longitudinal direction, and the belt-like cover sheet can be folded in the longitudinal direction while being folded so that the sticking surface of the hooking member is on the outside. Folded into
Insert the folds of the belt-shaped cover sheet inside the folds of the filter sheet with the belt-like hooking member, seal the edges of these sheets,
Next, these sheets are sequentially sealed in the width direction of the sheet between the latching members attached at predetermined intervals, and the inside of the bag-shaped portion formed by this seal is filled with the extraction material. A manufacturing method of a drip bag.

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