TWI775932B - Dripping bag - Google Patents

Abstract

A drip filter bag is provided, which is composed of natural fibers, and can easily extract an extract with better taste.

The trickling filter bag 1 is provided with: a bag body 10 made of natural fibers, having an opening 10a in which an extraction material 70 can be filled, and a head 20 overlapping at least a part of the edge of the opening 10a and being fixed to the bag The body 10 is made of a material that can be sealed by heat; and the clamping parts 30 are respectively provided on the outer surfaces of the opposite side and the other side of the bag body 10 .

Description

Drip filter bag

The present invention relates to trickling filter bags. In particular, the present invention relates to drip bags using natural fibers.

A conventional drip filter bag is known, which includes: a bag body formed of a water-permeable filter sheet and having an opening at the upper end; and a lug fixing member provided on the opposite side of the bag body. On the outer surfaces of the two surfaces, the hanging ear fixing member is provided with: an upper attachment portion, which is attached to the bag body along the opening portion of the bag body; and a central attachment portion, which extends from the upper attachment portion to the bottom side of the bag body, At least a part of the bottom side is attached to the bag body; the arm part is formed on the left and right sides of the central attaching part, and the lower end part of the arm part and the lower end part of the central attaching part are in a continuous state. The upper end portion is not attached to the bag body, so it is formed to be pulled up from the bag body; and the hanging ear fixing portion is formed to surround the lower end portion of the central attaching portion and the outer side of the arm portion, and the upper end portion of the arm portion is at It is in a continuous state without passing through the fold line, and is not attached to the bag body. The width of the upper attaching part is less than the width of the fixing part of the hanging ear, and there is no two ends of the upper attaching part along the two sides of the bag body. A reinforcing sheet extending downward from the edge portion (for example, refer to Patent Document 1.). According to the trickle filter bag described in Patent Document 1, it is possible to provide a trickle filter bag with a large opening of the opening of the bag body and a stable opening shape at low cost.

prior art literature Patent Literature

Patent Document 1 Japanese Patent Laid-Open No. 2016-105822

However, in the drip filter bag described in Patent Document 1, the bag body through which the extract is leaked is made of non-woven fabric, so it is difficult to extract a more delicious and warm extract using an extraction material such as coffee.

Therefore, the object of the present invention is to provide a drip filter bag which is composed of natural fibers and can easily extract an extract with better taste.

In order to achieve the above object, the present invention provides a drip filter bag, which includes: a bag body, which is made of natural fibers, has an opening, and can be filled with an extraction material; a head part that overlaps with at least a part of the outer edge of the opening and is It is fixed on the bag body and is made of a material that can be sealed by heat; and the clamping part is respectively provided on the outer surface of the opposite side and the other side of the bag body.

Furthermore, in order to achieve the above object, the present invention provides a drip filter bag containing an extraction material, comprising: a bag body made of natural fibers, having an opening and filled with the extraction material; The outer edge portion is overlapped and fixed to the bag body, and is made of a material that can be sealed by heat, and has a sealing portion at the end portion on the opposite side or the vicinity of the end portion on the opposite side of the opening side; On the opposite side of the bag body and the outer surface of the other side.

According to the drip filter bag of the present invention, a drip filter bag made of natural fibers can be provided, which can easily extract an extract with better taste.

1. 1a‧‧‧Drip filter bag

5‧‧‧Container

10, 11‧‧‧Bag body

10a, 11a‧‧‧Opening

15, 16‧‧‧Sewing

Area 15a‧‧‧

18‧‧‧Surface

19‧‧‧Back

20‧‧‧Head

30‧‧‧Clamping part

40‧‧‧Break

40a‧‧‧Opening

50, 50a, 50b, 52‧‧‧Fixing part

60‧‧‧Sealing

70‧‧‧Extraction materials

Sections 100, 102, 104, 106‧‧‧

Section 200‧‧‧

300‧‧‧Support

310‧‧‧Extraction

315‧‧‧Recess

317‧‧‧Protrusion

320‧‧‧Polyline

Fig. 1 is a schematic diagram showing the structure of the drip filter bag of the present embodiment.

Fig. 2 is a development view of the drip filter bag of the present embodiment.

Fig. 3 is a diagram showing a method of using the drip filter bag of the present embodiment.

FIG. 4 is a schematic diagram of a modification of the drip filter bag of the present embodiment.

Implementation form <Outline of drip bag 1>

As a method of extracting beverages such as coffee using an extraction material such as coffee beans, there is known an extraction method in which a bag-shaped filter bag is filled with powder of coffee beans or an extraction material such as tea leaves such as black tea, green tea, and oolong tea. (bag) is a drip method in which a filter bag is attached and fixed to a cup or the like using a fixing tool made of paper or the like, and hot water is poured into the opening of the filter bag to extract coffee components, tea components, and the like. The raw material constituting the filter bag is usually a filter composed of paper, nonwoven fabric, or the like. However, in order to extract a drink with better taste and taste, it is preferable that the raw material of the filter bag is composed of natural raw materials such as cotton.

However, since the filter bag is constructed using a natural material such as cotton, after filling the filter bag with the extraction material, the opening of the filter bag cannot be properly sealed by a conventional method. That is, unlike non-woven fabrics that can be simply and reliably sealed by thermocompression bonding, heat sealing, etc., natural materials such as cotton are difficult to seal by heat (even if they are sealed by heat, it is difficult to obtain practicality. the bond strength.). Furthermore, natural materials such as cotton can be sealed by sewing, but from the viewpoint of opening when hot water is injected, sewing creates an excessively strong seal, and the filter bag cannot be easily opened. Furthermore, in the case of sealing the opening by sewing, from the viewpoint of easily forming the opening, since it is necessary to make the sewn part so that it can be easily unwound, there may be a wide gap depending on the distance between the seams. In some cases, the contents, that is, the extraction material, may spill out of the filter bag during storage.

Therefore, as a result of various studies, the present inventors have found that by using a natural raw material to form a part that drips out of the extract extracted from the extraction material, and using a raw material that can be sealed by heat to form a sealed part (in the case of using the dripping method) The part that can form an opening during extraction), can easily manufacture a trickling filter bag containing the extraction material, and can easily form an opening for hot water injection during extraction, and can form a dripping method using natural raw materials. Extraction filter bags.

That is, the drip filter bag 1 of the present embodiment includes: a bag body 10 made of natural fibers, having an opening 10a and capable of being filled with the extraction material 70; and being fixed by overlapping at least a part of the outer edge of the opening 10a The bag body 10 is made of a head 20 made of a material that can be sealed by heat; and clamping portions 30 are respectively provided on the outer surfaces of the opposite side and the other side of the bag body 10 . Hereinafter, the drip filter bag of this embodiment will be described in detail with reference to the drawings.

[Details of drip filter bag 1]

FIG. 1 shows an example of the outline of the structure of the drip filter bag of the present embodiment. FIG. 1( a ) shows an example of the outline of the side surface of the drip filter bag 1 according to the present embodiment, and FIG. 1( b ) shows the head portion 20 of the drip filter bag 1 , the bag body 10 , the head portion 20 and the clamping portion 30 . An example of the outline of the fixed state between.

As described above, the trickling filter bag 1 is provided with: a bag body 10 having an opening 10a in a part of the outer edge part, and the other outer edge parts except the opening 10a are closed; The head 20 is fixed or attached to the bag body 10 and is made of a material that can be sealed by heat; it is respectively arranged on the outer surface of the opposite side and the other side of the bag body 10, and is fixed to the container during use. Holder 30. Since the head 20 is fixed or attached to the bag body 10, when the drip filter bag 1 is viewed from the side, the opening 10a is observed to be linear.

(bag body 10)

The bag body 10 is configured to have a portion 100 having a substantially right conical shape and a portion 102 having a substantially cylindrical shape. In the bag body 10 , a portion 100 having a substantially right conical shape and a portion 102 having a substantially cylindrical shape are connected in a continuous state on the opposite side of the vertex of the portion 100 . The opening 10a of the bag body 10 is the end portion of the portion 102, and is provided at the end portion opposite to the portion 100 side. Furthermore, the bag body 10 has a seamed portion 15 closed by sewing in at least a part of the outer edge portion excluding the opening 10a.

The bag body 10 is made of natural fibers. As a natural fiber, it is preferable to use cotton, and it is more preferable to use 100% cotton. Furthermore, the cotton preferably has a thickness of not less than 60 g/m ² and not more than 150 g/m ² (basic) from the viewpoint of keeping the opening 10a opened when hot water is injected and allowing the extract of a concentration suitable for drinking to leak. weight), more preferably a thickness of 60 g/m ² or more and 120 g/m ² or less. Moreover, as the thread used for the suture part 15, any thread may be used as long as it is a thread composed of natural fibers.

(head 20)

The head portion 20 is provided so as to overlap the outer edge portion of the opening 10a of the bag body 10 . More specifically, the head 20 has a substantially cylindrical shape, as shown in FIG. 1( a ) and FIG. 1( b ), and is provided overlapping the inner side of the portion 102 of the bag body 10 , and has a portion extending outward from the opening 10 a . Section 200. Moreover, the head part 20 has the fracture|rupture part 40 in the position which deviates by a predetermined distance from the edge part on the opposite side to the opening 10a side toward the opening 10a side. The breaking portion 40 is, for example, a cutting line or a slit. At least the end portion of the head portion 20 on the opposite side from the opening 10a or the vicinity of the end portion on the opposite side from the opening 10a is formed of a material that can be sealed by thermocompression or the like. In addition, it may be provided so that the head part 20 overlaps with the outer side of the part 102 of the bag body 10 .

Specifically, it is preferable to use a non-woven fabric as the material that can be sealed by heat for constituting the head 20 . As the non-woven fabric, a non-woven fabric having air permeability and water permeability such that the extraction material 70 filled in the trickling filter bag 1 does not actually leak to the outside can be used. Moreover, polypropylene, polyethylene, etc. are mentioned as a material which comprises a nonwoven fabric, for example.

(Clamping part 30)

The clamping portion 30 is provided on the outer surface of the bag body 10 . That is, the holding parts 30 are respectively provided on the outer surface of the opposite surface (front surface 18 ) and the outer surface of the other surface (back surface 19 ) of the bag body 10 . The holding part 30 is configured to have a support body 300 and a pull-out part 310 that is continuous with the support body 300 and has a recess 315 . A fold line 320 is provided at the boundary between the support portion 300 and the pull-out portion 310 . In addition, the support body 300 has a convex portion 317 at a portion corresponding to the concave portion 315 of the pull-out portion 310 . When the drip filter bag 1 is used, the pull-out portion 310 is pulled up from the support body 300 with the folding line 320 as a fulcrum, and the concave portion 315 is embedded in the edge of the container.

The holding portion 30 can be formed using, for example, paper or paper to which water repellency treatment has been applied.

In addition, in the side view, the part 100 of the drip filter bag 1 is observed to be substantially right-angled triangles, and the parts 102 and 200 are substantially rectangular. In addition, as an example, in the side view, the dimensions of the drip filter bag 1 are that the long side of the part 102 is 12.5 cm, the short side is 3 cm, the vertex angle of the part 100 is approximately 90°, and the short side of the head 20 is 1.5 cm. (The long side of the head 20 is substantially the same as the long side of the portion 102. However, in the side view, the length of the head 20 of the drip filter bag 1 is the length of the portion exposed to the outside.). However, these dimensions are merely examples.

(Fixed state among the bag body 10, the head 20, and the clamping portion 30)

In this embodiment, in the side view, the bag body 10 and the head 20 of the drip filter bag 1 , the outer edge portion (near the short side in the side view) of the portion 102 and the outer edge portion of the head 20 ( The overlapping area near the short side in the side view is fixed (fixed part 50 ), and is the vicinity of the boundary line between the part 102 and the part 100 (the vicinity of the long side end of the part 102 in the side view) and the head The area|region which overlaps the edge part (the long side vicinity of the side which overlaps with the bag body 10 of the head part 20 in the side view) of 20 is fixed (fixed part 50a). Furthermore, in the side view, the outer edge portion (the vicinity of the short side in the side view) of the head portion 20 of the drip filter bag 1 is also fixed (fixed portion 50b). In addition, the bag body 10 and the holding part 30 , the predetermined part of the support body 300 of the holding part 30 , and the bag body 10 are fixed to the fixing part 52 .

The fixing portion 50, the fixing portion 50a, the fixing portion 50b, and the fixing portion 52 can be formed by various means such as heat welding, high-frequency welding, ultrasonic welding, or a method using an adhesive. In the present embodiment, in the case of using a natural material and a non-woven fabric, a method for firmly adhering the natural material and the non-woven fabric, for example, a welding method using ultrasonic vibration (ultrasonic welding) is optimal. By ultrasonic welding, bonding of natural raw materials and non-woven fabrics with sufficient strength, bonding of non-woven fabrics to each other, and bonding of natural raw materials to paper can be realized. In addition, by ultrasonic welding, it is possible to reliably prevent foreign matter such as adhesive from being mixed into the drip filter bag 1 .

Furthermore, after the bag body 10 is filled with the extraction material 70, the end of the head 20 is the end on the opposite side of the opening 10a, or the vicinity of the end on the opposite side of the opening 10a is bonded by thermocompression or the like. is sealed (this sealed area will be formed as the sealing portion 60.). Ultrasonic welding may also be used for the formation of the sealing portion 60, but from the viewpoint of simplification of manufacture, it is preferable to form the sealing portion 60 by thermocompression.

(extracted material 70)

The extraction material 70 is powder of coffee beans, tea leaves such as black tea, green tea, oolong tea, or the like. In the present embodiment, when the powder of coffee beans is used as the extraction material 70, the extraction material 70 filled in the bag body 10 is preferably about 10 g to 20 g.

(Manufacturing method of drip filter bag 1)

FIG. 2 shows an example of an outline of a development view of the drip filter bag in the present embodiment.

The drip filter bag 1 is made by adhering a bag body 10 made of natural fibers and a head 20 made of non-woven fabric to each other, and a clamping part 30 is attached to a predetermined position on the outer surface of the bag body 10 . For example, as shown in the development example of the drip filter bag 1 in FIG. 2 , a first cloth body formed of natural fibers corresponding to the bag body 10 (a pair of shorter sides of the cloth body in the shape of a right-angled triangle have The elongated shape of the rectangular cloth-like body) and the second cloth-like body (rectangular shape) corresponding to the head 20 formed using nonwoven cloth are overlapped. The second cloth-like system partially overlaps the rectangular cloth-like body of the first cloth-like body. In this case, a part of the second cloth-shaped body is provided in a region that does not overlap with the first cloth-shaped body. Then, it is folded along the vertical line of the longest side of the cloth-shaped body portion of the right-angled triangle of the first cloth-shaped body.

Next, the region 15a of the partial end portion of the bag body 10 (the region of the longest side of the right-angled triangle-shaped portion) is sewn by sewing (thereby, the sewn portion 15 is formed). In addition, the sewing pitch is preferably 0.5 mm or more and 10 mm or less, and more preferably 1 mm or more and 7 mm or less, from the viewpoint of preventing the extraction material 70 from falling out, for example.

Also, in the folded state, a predetermined area (area corresponding to the fixing portion 50 ) and the area between the portion 100 and the portion 102 in the vicinity of the respective ends of the areas where the first cloth-like body and the second cloth-like body overlap. The area near the boundary line (the area corresponding to the fixed part 50a) and the predetermined area near the end of the short side of the area where the second cloth-like bodies overlap each other (the area corresponding to the fixed part 50b) are each welded by ultrasonic welding to be fixed. Next, clamping portions 30 are respectively disposed on the outer surfaces of the opposite surface and the other surface of the bag body 10 , and the predetermined portion of the support body 300 of the clamping portion 30 is fixed to the bag body 10 by ultrasonic welding. Next, the rupture portion 40 is formed at a predetermined position of the head portion 20 . The trickling filter bag 1 is manufactured in the above-described manner.

Then, the bag body 10 is filled with a predetermined amount of a predetermined extraction material 70, and the end of the head 20 on the opposite side of the opening 10a side, or the vicinity of the end, is formed into a sealing portion 60 by thermocompression bonding. Trickling filter bag 1 of extraction material 70. In addition, the rupture portion 40 may be formed after the bag body 10 is filled with the extraction material 70 and the sealing portion 60 is formed. Next, the drip filter bag 1 containing the extraction material 70 is enclosed in a laminated packaging bag or the like having, for example, an aluminum vapor deposition film or the like.

(How to use the drip filter bag 1)

FIG. 3 shows an example of the usage method of the drip filter bag of the present embodiment.

First, as shown in FIG. 3( a ), a part of the head portion 20 is cut along the fractured portion 40 of the drip filter bag 1 . Then, the pull-out portion 310 of the holding portion 30 is pulled up from the support body 300 , and the drip filter bag 1 is fixed to the container 5 by inserting the concave portion 315 into the outer edge of the container 5 . Here, in the present embodiment, the gripping portion 30 provided on the outer surface of one side of the bag body 10 and the gripping portion 30 provided on the outer surface of the other side are shown in the front view or side view with the respective pull-out portions 310 It is provided in the bag body 10 so that the pull-out directions of the middle are opposite to each other.

Therefore, as shown in FIG.3(b), the pull-out part 310 of the clamp part 30 of one side and the pull-out part 310 of the clamp part 30 of the other side are pulled up in the opposite direction mutually, and are fixed to the container 5. Therefore, in the trickle filter bag 1 in plan view, since the pull-out portions 310 can be arranged at substantially point-symmetrical positions about the vicinity of the apex of the portion 100 , the trickle filter bag 1 can be stably attached to the container 5 .

Then, since hot water can be injected into the opening 40 a formed by cutting the head 20 along the fracture portion 40 , the extraction liquid from the extraction material 70 is dripped into the container 5 . Here, since the bag body 10 has the substantially conical portion 100 , the extraction liquid drips into the container 5 from the vicinity of the apex of the portion 100 .

[Variation of drip bag]

FIG. 4 is a schematic diagram showing a modification of the drip filter bag of the present embodiment. The trickle filter bag 1 a of the modified example has substantially the same structure and function as the trickle filter bag 1 except that the shape of the bag body is different from the trickle filter bag 1 . Therefore, except for differences, detailed descriptions are omitted.

The trickling filter bag 1a is configured to have a portion in which the bag body 11 has a substantially oblique conical shape. That is, the bag body 11 is configured to have a portion 104 including a substantially oblique conical portion and a substantially cylindrical portion 106 . In the bag body 11, a portion 104 including a substantially oblique conical portion and a substantially cylindrical portion 106 are connected to the opposite side of the apex of the portion 104 in a continuous state. The opening 11a of the bag body 11 is the end portion of the portion 106, and is provided at the end portion opposite to the portion 104 side.

Then, the bag body 11 is tied to at least a part of the outer edge portion excluding the opening 11a, and has a seamed portion 16 closed by sewing. For example, in side view, the end of portion 106 (in side view, portion 106 has a generally rectangular shape, here one short side portion of the generally rectangular shape) and the end of portion 104 are closed by sewing. As shown in FIG. 4( b ), the bag body 11 and the head portion 20 are bonded to each other through the fixing portion 50 using, for example, the ultrasonic welding method as in the drip filter bag 1 . That is, in the trickle filter bag 1a, in the side view, the short side part of the head 20 is connected to the part of the short side part of the part 106, and the end region of the long side part of the part 106 side of the head 20 is connected to the part 106, The short side portions which are the short side portions of the head 20 and which do not overlap with the portion 106 are adjacent to each other.

In the trickling filter bag 1a, the bag body 11 filled with the extraction material 70 has a portion 104 having a substantially oblique conical shape. Accordingly, the apex of portion 104 is biased to the right (or left) side in side view. In addition, in the drip filter bag 1a, the pull-out direction of the pull-out portion 310 of the holding portion 30 is attached to the bag body 11 so as to be pulled up toward the side where the apex exists. That is, in the trickle filter bag 1a, unlike the trickle filter bag 1, the holding portion 30 provided on the outer surface of one side of the bag body 11 and the holding portion 30 provided on the outer surface of the other side are provided in the respective The pull-out direction of the pull-out portion 310 in the front view or the side view becomes the same direction.

In this way, when the trickling filter bag 1a is attached to the container 5, the position where the one pull-out portion 310 is attached to the container 5 and the other pull-out portion 310 are attached in a plan view. The line segment connected at the position of the container 5 can be close to the position of the center of gravity of the extraction material 70 , so that the inclination of the trickling filter bag 1 a due to the weight of the extraction material 70 can be suppressed.

(Effect of the embodiment)

In the drip filter bag 1 of the present embodiment, since the bag body 10 filled with the extraction material 70 can be made of cotton, which is a natural raw material, in the case of using the powder of coffee beans as the extraction material 70, it is easy to drink with a good taste and good taste. Smooth flannel drip coffee. Furthermore, the drip filter bag 1 is divided into a bag body 10 made of natural materials and a head 20 made of nonwoven fabric. Since the head 20 is made of a material that can be sealed by heat, the extraction material 70 is filled to After the bag body 10, the predetermined position of the head 20 can be heat-sealed (also, when the entire drip filter bag is made of natural materials, heat-sealing is difficult, and it is difficult to achieve practically acceptable sealing.). Thereby, the disposable trickle bag 1 using a natural raw material, which was conventionally considered difficult to realize, can be easily manufactured.

In addition, the trickle filter bag 1 of the present embodiment can be easily enclosed in a layered packaging bag that blocks oxygen, etc., like a conventional trickle filter bag, even though natural materials are used, and can be stored for a long period of time. Therefore, when the drip bag 1 is used, for example, when the extraction material 70 is coffee powder, the taste, aroma, and the like can be maintained for a long period of time. Furthermore, the drip filter bag 1 of the present embodiment can be used as a disposable drip filter bag, so there is no need for the following conventional flannel drip-type extraction step: the flannel filter before use (nel filter) The step of blanching after rinsing with water, or the step of boiling the used flannel filter cloth and washing the fat content of the extraction material remaining in the flannel filter cloth, etc., soaking the flannel filter cloth after boiling Steps for placing in a cool place such as a container with cold water. Therefore, according to the drip filter bag 1 of the present embodiment, it is possible to brew coffee and the like with a good taste very simply by the flannel drip type.

Although the embodiments of the present invention have been described above, the embodiments described above are not intended to limit the inventors within the scope of the patent claims. In addition, it should be noted that all the combinations of the features described in the embodiments are not necessarily combinations of means for solving the problems of the invention.

1‧‧‧Drip filter bag

10‧‧‧Bag

10a‧‧‧Opening

15‧‧‧Sewing

18‧‧‧Surface

19‧‧‧Back

20‧‧‧Head

30‧‧‧Clamping part

40‧‧‧Break

40a‧‧‧Opening

50, 50a, 50b, 52‧‧‧Fixing part

60‧‧‧Sealing

70‧‧‧Extraction materials

Sections 100 and 102‧‧‧

Section 200‧‧‧

300‧‧‧Support

310‧‧‧Extraction

315‧‧‧Recess

317‧‧‧Protrusion

320‧‧‧Polyline

Claims (9)

A drip filter bag, comprising: a bag body made of natural fibers, having an opening and an interior of which can be filled with an extraction material; a head portion overlapping at least a part of the outer edge of the opening and being fixed to the bag body, and using It is made of a material that can be sealed by heat, and has a portion extending outward from the opening of the bag body; and a clamping portion is respectively provided on the outer surface of the opposite side and the other side of the bag body, and the aforesaid can be The material sealed by heat is non-woven. The drip filter bag of claim 1, wherein the aforementioned natural fiber is cotton. The drip filter bag of claim 1, wherein at least a part of the outer edge of the bag body excluding the opening has a stitched portion. The drip filter bag of claim 2, wherein at least a part of the outer edge portion of the bag body excluding the opening has a stitched portion. The trickling filter bag according to any one of claims 1 to 4, wherein the head portion has a break at a position deviated by a predetermined distance from the end portion on the opposite side of the opening side toward the opening side, and the end portion on the opposite side or The vicinity of the end portion on the opposite side can be sealed. The drip filter bag of claim 5, wherein the aforementioned bag system has a portion in the shape of a substantially right cone. As in the drip filter bag of claim 5, wherein The aforementioned bag system has a portion in the shape of a generally oblique cone. The drip filter bag of claim 2, wherein the cotton has a basis weight of 60 g/m ² or more and 150 g/m ² or less. A trickling filter bag containing an extraction material, comprising: a bag body made of natural fibers, having an opening and filled with an extraction material; and a head portion overlapping at least a part of the outer edge of the opening and being fixed to the The bag body is made of a material that can be sealed by heat, and has a portion extending outward from the opening of the bag body, and has a sealing portion at or near the end portion on the opposite side of the opening side; and The clamping parts are respectively arranged on the outer surface of the opposite side and the other side of the bag body, and the heat-sealing material is non-woven fabric.

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