JP2013133108A - Tea bag, apparatus for manufacturing the same, and method of manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To manufacture a tea bag of a unique shape inexpensively and efficiently while maintaining sealability.SOLUTION: A tea bag 1 includes tea leaves A of a predetermined amount used for one or a plurality of times of extraction, and a bag 3 containing the tea leaves A and used by being immersed in hot water or water simultaneously with the tea leaves A in extraction. The bag 3 includes two filters 5 and 7 cut into a predetermined outer shape and used by being superposed on each other, and sewing thread 13 sewing up peripheral edges 9 and 11 of the two filters 5 and 7 at a predetermined pitch that the tea leaves A do not flow out.

Description

  The present invention relates to a tea bag that contains a predetermined amount of tea leaves and is immersed in hot water or water at the same time as the tea leaves at the time of extraction, and in particular, a tea bag having a characteristic in outer shape and structure, and manufacturing the tea bag The present invention relates to a tea bag manufacturing apparatus and a tea bag manufacturing method.

When drinking tea or the like, a predetermined amount of tea leaves are stored in the bag beforehand, and tea bags that are used by immersing tea leaves in hot water or water simultaneously with the bag at the time of extraction are widely used due to their ease of use. Yes.
Recently, in addition to black tea, tea bags have been widely used for oolong tea, green tea, barley tea, brown rice tea, hoji tea, herbal tea, various blended teas, and the like.

  The shape of conventional tea bags is mostly rectangular because of their ease of molding, and most of them use non-woven bags with one side open, and a predetermined amount from the opening of the bag After the opening is folded, the opening is sealed using a sealing fitting or the like.

On the other hand, recently, as shown in Patent Documents 1 and 2 below, tea bags having a unique shape such as a heart shape or a star shape have also appeared.
And in following patent document 1, the manufacturing method using ultrasonic fusion is disclosed when shape | molding a tea bag in the said specific shape, The hole part match | combined with the external shape of the tea bag to shape | mold is formed. The outer shape of the two filters is cut into the unique shape by simultaneously moving the fusion cutting tool along the edge of the hole, and at the same time the peripheral edge of the two filters is melted. The unique shape tea bag is formed by wearing.

Utility Model Registration No. 3116503 Japanese Utility Model Publication No. 4-7462

However, according to the tea bag manufacturing method using ultrasonic fusion disclosed in the above-mentioned Patent Document 1, there are cases where the tea leaves enter the peripheral portions of the two filters arranged in a horizontal posture with the tea leaves in between. If the peripheral edges of the two filters are ultrasonically fused in a state where the tea leaves have entered, the portion into which the tea leaves have entered becomes an unfused portion.
When the tea leaves that have entered the unfused portion fall off after drought, a cavity is formed in that portion, and other tea leaves in the bag may also flow out from the cavity.

Further, in the case of the tea bag manufacturing method disclosed in Patent Document 1, an expensive mold must be prepared in advance according to the outer shape of the tea bag to be manufactured. If the outer shape of the bag reaches a plurality of types, the number of molds to be prepared increases and a large amount of mold production costs are required.
In addition, there are many different types of tea bags that customers want, and it is easy to set and modify the shape of tea bags according to the changing times and trends. A manufacturing technique is desired.

  The present invention has been made on the basis of such points, and the object of the present invention is to eliminate the risk of tea leaves flowing out after the formation of the bag body, and to easily set and modify patterns of various outer shapes. Another object of the present invention is to provide a tea bag, a tea bag manufacturing apparatus, and a tea bag manufacturing method capable of responding to a variety of small-quantity production at a low equipment cost.

  In order to achieve the above object, a tea bag according to claim 1 of the present invention comprises a predetermined amount of tea leaves used for one or more extractions, and contains the tea leaves soaked in hot water or water simultaneously with the tea leaves during extraction. In the tea bag provided with the bag body used, the bag body is cut into a predetermined outer shape and used with two filters, and the tea leaves flow out from the peripheral edge of the two filters. And a sewing thread that is bent at a predetermined pitch.

  A tea bag according to claim 2 is the tea bag according to claim 1, wherein the outer shape of the two filters is a heart shape.

  The tea bag according to claim 3 is the tea bag according to claim 1 or 2, wherein the two filters are made of nylon mesh, and the sewing thread is made of a polyester synthetic fiber. It is characterized by.

  According to a fourth aspect of the present invention, there is provided a tea bag manufacturing apparatus, wherein a predetermined amount of tea leaves used for one or more extractions and the tea leaves are stored and immersed in hot water or water simultaneously with the tea leaves during extraction. In a tea bag manufacturing apparatus including a bag body, a filter holder having two fixing plates each having a window portion punched in accordance with the outer shape of the bag body, and a tea leaf in the middle by the filter holder A sewing device that sews two filters that are held in a state of sandwiching at a predetermined position inside the window along the shape of the window, and two filters that are sewn by the sewing device. And a cutting device that cuts into a predetermined outer shape in accordance with the shape of the window portion.

  A tea bag manufacturing apparatus according to claim 5 is the tea bag manufacturing apparatus according to claim 4, wherein a window portion formed on the fixing plate is provided between the two fixing plates of the filter holder. An enclosing frame having a predetermined thickness is provided so as to surround the window portion.

  The tea bag manufacturing apparatus according to claim 6 is the tea bag manufacturing apparatus according to claim 4 or 5, wherein the sewing apparatus selects or creates various sewing shapes and expands the sewing line at a predetermined ratio. In addition, the sewing machine is configured by an industrial sewing machine with an input function that can be reduced.

  The tea bag manufacturing apparatus according to claim 7 is the tea bag manufacturing apparatus according to any one of claims 4 to 6, wherein the cutting apparatus has a blade portion formed at one end edge in a longitudinal direction. A punching die in which a strip-shaped plate material is formed in accordance with the shape of the window portion, and a press machine that applies a pressure to the punching die arranged along the shape of the window portion and punches it into a predetermined outer shape. It is characterized by comprising.

  In addition, the tea bag manufacturing method according to claim 8 is used by storing a predetermined amount of tea leaves used for one or more extractions and immersing the tea leaves in hot water or water simultaneously with the tea leaves during extraction. In the manufacturing method of a tea bag provided with a bag body, a first filter is set on a first fixing plate having a window portion punched in accordance with the outer shape of the bag body, and a first filter above the window portion is provided. A tea leaf setting step of placing a predetermined amount of tea leaves on the upper surface of the filter, a window covered with a second filter on the first filter on which the tea leaves are set, and punched in accordance with the outer shape of the bag body A filter holding step for holding the two filters in a state in which a second fixing plate having a portion is placed and tea leaves are accommodated between the first filter and the second filter, and the two fixing plates Retained A sewing process in which two filters are sewn at a predetermined position inside the window along the shape of the window, and the two filters sewn in the sewing process are cut along the shape of the window. And a cutting step.

  The tea bag manufacturing method according to claim 9 is the tea bag manufacturing method according to claim 8, wherein, in the tea leaf setting step, a predetermined thickness is provided along the window portion on the upper surface of the first fixed plate. An enclosure frame is arranged, and the first filter is set on the first fixing plate on which the enclosure frame is arranged.

  The method for manufacturing a tea bag according to claim 10 is the method for manufacturing a tea bag according to claim 8 or 9, wherein the processing of the windows formed on the two fixing plates is performed on the tea bag to be manufactured. It is configured to be executed based on punching line data obtained by enlarging the sewing line data corresponding to the outer shape by a predetermined magnification.

  According to the tea bag, the tea bag manufacturing apparatus and the tea bag manufacturing method according to the present invention, first, by sewing processing using a sewing thread that bends the peripheral edges of the two filters at a predetermined pitch at which tea leaves do not flow out. Even if tea leaves enter the sewing line, no cavities are generated due to falling off of the tea leaves, and tea leaves do not flow out of the cavities. There is no risk of spillage and the generation of defective products can be eliminated.

In addition, when the outer shape of the two filters is a heart shape, the shape of the unique shape that can be expected to be expanded to gifts and souvenirs, etc., which has a different taste from the conventional tea bag with a rectangular shape. Tea bags can be provided.
In addition, when the two filters are made of nylon mesh and the sewing thread is formed of polyester synthetic fiber, good leachability of components contained in tea leaves and desired strength required for the bag body Can be obtained.

Further, only the inexpensive filter holder and the sewing device are used for joining the peripheral portions of the two filters, and an expensive mold, ultrasonic fusion device, or the like is not necessary. The equipment cost required for joining the peripheral edge can be reduced. In addition, tea bags can be manufactured for low-volume production of various varieties at a low equipment cost without using a mold.
In addition, when setting the tea leaves on the upper surface of the first filter, an enclosing frame having a predetermined thickness is arranged on the upper surface of the first fixing plate along the window, and the first fixing plate on which the enclosing frame is arranged is arranged. When configured to set the first filter, a recess having a depth obtained by adding the thickness of the surrounding frame to the thickness of the first fixing plate is formed in the first filter above the window portion. This makes it easier to set a predetermined amount of tea leaves. In addition, since the movement of the tea leaves is prevented by the surrounding frame during sewing, the above-described pinching of the tea leaves into the sewing line hardly occurs.

  In addition, when an industrial sewing machine with an input function capable of selecting or creating various sewing shapes as a sewing device and enlarging or reducing the sewing line at a predetermined ratio is applied, the existing shape setting function of the industrial sewing machine is applied. It becomes possible to manufacture tea bags having various outer shapes using the above, and it becomes possible to easily set and correct various outer shape patterns.

  Also, when the punching line data is generated by using the sewing line data enlargement / reduction function of the industrial sewing machine, and the windows are formed on the two fixed plates based on the punching line data. The effective use of industrial sewing machines and the reduction of the molding cost of fixed plates will be achieved. The punching line data can also be used for forming the frame and the punching die.

It is a figure which shows embodiment of this invention, and is an exploded perspective view which shows a tea bag. It is a figure which shows embodiment of this invention and is a top view which shows a tea bag. It is a figure which shows embodiment of this invention and is a sectional side view which shows a tea bag. It is a figure which shows embodiment of this invention, and is a top view which shows the various modifications of the tea bag which varied the external shape and one part structure. It is a figure which shows embodiment of this invention, and is an exploded perspective view which shows the filter holder of a tea bag manufacturing apparatus. It is a figure which shows embodiment of this invention, and is a perspective view which shows the use condition of the sewing apparatus of the manufacturing apparatus of a tea bag. It is a figure which shows embodiment of this invention, and is a perspective view which shows the use condition of the cutting device of the manufacturing apparatus of a tea bag. It is a figure which shows embodiment of this invention and is explanatory drawing which shows the tea leaf setting process of the manufacturing method of a tea bag. It is a figure which shows embodiment of this invention and is explanatory drawing which shows the filter holding process of the manufacturing method of a tea bag. It is a figure which shows embodiment of this invention and is explanatory drawing which shows the sewing process of the manufacturing method of a tea bag. It is a figure which shows embodiment of this invention and is explanatory drawing which shows the cutting process of the manufacturing method of a tea bag.

Hereinafter, based on the illustrated embodiment, the tea bag 1, the tea bag manufacturing apparatus 21, and the tea bag manufacturing method of the present invention will be specifically described.
(1) Configuration of tea bag (see FIGS. 1 to 4)
First, the configuration of the tea bag 1 of the present invention will be specifically described with reference to FIGS.
The tea bag 1 of the present invention includes a predetermined amount of tea leaves A used for one or more extractions, and a bag body that contains the tea leaves A and is immersed in hot water or water simultaneously with the tea leaves A during extraction. 3 is basically configured.

As the tea leaves A, black tea, oolong tea, green tea, barley tea, brown rice tea, hoji tea, herbal tea, blended tea blended with various tea leaves, etc. can be used. Degree.
The bag body 3 is cut into a predetermined outer shape and includes two filters, a first filter 5 and a second filter 7 that are used in an overlapping manner, and peripheral portions 9 and 11 of the two filters 5 and 7. It is basically configured by including a sewing thread 13 that is bent at a predetermined pitch at which the tea leaves A do not flow out.

In the embodiment shown in FIGS. 1 to 3, the outer shape of the two filters 5 and 7 is formed in a heart shape as an example, and the outer shape of the two filters 5 and 7 having the heart shape. A sewing line 15 is formed by the sewing thread 13 at a predetermined position inside the shape along the shape.
Further, as the material of the two filters 5 and 7, a material having good leachability and necessary mechanical strength, such as nylon mesh, can be adopted, and the material of the sewing thread 13 is Toray Industries, Inc. A polyester synthetic fiber represented by the trade name “Tetron” jointly owned by Teijin Limited is applicable as an example.

In addition, the tea bag 1 configured as described above includes various modifications in which the outer shape and a part of the structure are different, and some of the modifications are illustrated in FIG.
Among them, the tea bag 1A in FIG. 4A shows a tea bag having an outer shape imitating a fir tree used for a Christmas tree, and the tea bag 1B in FIG. 4B shows a heart shown in FIG. A deformed heart-shaped tea bag in which the aspect ratio of the shaped tea bag 1 is varied is shown.

Moreover, the tea bag 1C of FIG.4 (c) has shown the tea bag with the tag to which the heart-shaped tag 17 was attached as an example used with a hand at the time of extraction.
And the sewing line 15 formed in the peripheral parts 9 and 11 of these tea bags 1 is provided in the inward position of the said external shape which reduced the external shape of the tea bag 1 by about 10%.
4C, when the tag-attached tea bag 1C is manufactured, the base portion of the tag string 19 with the tag 17 attached to the tip is thermally welded to the first filter 5 or the second filter 7. At the time of sewing with the sewing thread 13, the base portion of the tag string 19 is attached together.

(2) Configuration of tea bag manufacturing apparatus (see FIGS. 5 to 7)
Next, based on FIGS. 5-7, the structure of the tea bag manufacturing apparatus 21 of this invention is demonstrated concretely.
The tea bag manufacturing apparatus 21 of the present invention is configured as an example by including a filter holder 23 shown in FIG. 5, a sewing apparatus 39 shown in FIG. 6, and a cutting apparatus 53 shown in FIG. 7.

Among these, the filter holder 23 includes a first fixing plate 25 and a second fixing plate 27 having windows 29 and 31 punched in accordance with the outer shape of the bag body 3, and these two fixing plates 25, 27 and a surrounding frame 35 having a predetermined thickness disposed along the window 29 so as to surround the window 29 of the first fixed plate 25.
The two fixing plates 25 and 27 are formed by a bake plate having a thickness of 0.5 mm (thickness is arbitrary) as an example, and the sewing line 15 is an example of the center of the fixing plates 25 and 27. As a result, window portions 29 and 31 punched by a punching line 33 having a size enlarged by about 10% are formed.
In addition, ears 26 and 28 projecting outward are provided as an example at both ends of one side of these fixing plates 25 and 27, and positioning holes 26a and 28a are formed in these ears 26 and 28, respectively. Has been.

Further, the surrounding frame 35 is configured as an example by arranging a strip-like long felt along the shape of the window portion 29 of the first fixing plate 27, and the upper surface of the surrounding frame 35 and the second fixing plate 27. The two filters 5 and 7 are sandwiched and held between the lower surface of the filter.
Incidentally, by using such a surrounding frame 35, the thickness of the surrounding frame 35 is set to the thickness of the first fixing plate 25 with respect to the first filter 5 above the window portion 29 of the first fixing plate 25. As a result, a depression 37 having a depth added thereto is formed, and the predetermined amount of tea leaves A can be easily set.

The sewing device 39 includes two filters 5 and 7 held in a state where the tea leaves A are sandwiched between the filter holders 23 along the shape of the window portions 29 and 31, and the inside of the window portions 29 and 31. This is a device for sewing at a predetermined position.
In this embodiment, an embroidery industrial sewing machine with an input function capable of selecting or creating various sewing shapes as the sewing device 39 and enlarging or reducing the sewing line 15 at a predetermined ratio is employed.

  The sewing device 39 includes a sewing machine main body 41 and an input device 43 that is separate from the sewing machine main body 41. The sewing machine main body 41 holds the filter holder 23 serving as a workpiece in two horizontal axis directions. A movable frame 45 that moves in a certain X and Y direction, a holding plate 47 that presses the other side of the filter holder 23 where the ears 26 and 28 are not formed, and the ears 26 and 28 are formed. A positioning pin 51 for positioning the filter holder 23 by being inserted into the positioning holes 26a, 28a, and a needle that moves up and down with a stroke passing through the two filters 5 and 7 held by the filter holder 23 49 is provided.

As an example, the input device 43 includes a desktop input device 43A having a touch panel type operation panel 44. By using the input device 43A, various sewing shapes stored in advance can be selected. Or creating an original sewing shape, and setting the needle thread tension, enlargement / reduction ratio, sewing speed, number of stitches, etc. with simple operations.
Further, in the present embodiment, the needle 49 is pierced on the above-described punching line 33 with respect to the first fixed plate 25 and the second fixed plate 27 without using the sewing device 39 to set the sewing thread 13. The windows 29 and 31 are formed respectively.

The cutting device 53 is a device that cuts the two filters 5 and 7 that have been sewn into a predetermined outer shape in accordance with the shape of the window portions 29 and 31, and has been sewn by the sewing device 39 as a specific configuration. The two filters 5 and 7 are punched into a predetermined outer shape using a punching die 55 formed in accordance with the shape of the window portions 29 and 31.
In the present embodiment, the cutting device 53 uses a punching die 55 in which a strip-like plate material having a blade portion 56 formed at one end edge in the longitudinal direction is molded according to the shape of the window portions 29 and 31. It arrange | positions along the shape of the window parts 29 and 31, and it is comprised so that a pressurizing force may be applied with a press machine and it may be pierce | punched into a predetermined external shape.

As an example of the press machine, a hand press machine 57 having a maximum pressurization capacity of 5 tons can be used. The hand press machine 57 is a manual press machine capable of cutting a workpiece having a width of 300 mm, a depth of 225 mm, and a thickness of about 10 mm, and is set up on a base 59 for setting the workpiece and the base 59. It is configured as an example by including a support post 61, a cutting top plate 63 that is externally fitted to the support post, can be turned in the horizontal direction, and can be raised and lowered in the vertical direction, and a handle 65 that operates the cutting top plate 63. ing.
Further, the above-described die 55 is fitted into the window 31 in the second fixing plate 27 of the filter holder 23 in which the two filters 5 and 7 are previously sewn, and the die 55 is attached. The filter holder 23 in the state is set between the cutting top plate 63 and the base 59 to perform cutting.

(3) Tea bag manufacturing method (see FIGS. 8 to 11)
Next, based on FIGS. 8-11, the structure of the manufacturing method of the tea bag of this invention is demonstrated concretely.
The tea bag manufacturing method of the present invention is shown in FIG. 8 (A) tea leaf setting step, FIG. 9 (B) filter holding step, FIG. 10 (C) sewing step, and FIG. 11 ( D) It is comprised as an example by providing a cutting process.

(A) Tea leaf setting process (see FIG. 8)
In the tea leaf setting step, the first filter 5 is set on the first fixed plate 25 having the window portion 29 punched in accordance with the outer shape of the bag body 3, and the first filter 5 above the window portion 29 is set. This is a step of placing a predetermined amount of tea leaves A on the upper surface.
In the present embodiment, a surrounding frame 35 having a predetermined thickness is disposed on the upper surface of the first fixture 25 along the window 29, and the top of the first fixture 25 on which the enclosure frame 35 is disposed. The first filter 5 is set to the first.

  Therefore, in this process, as described above, the first filter 5 is formed with the depression 37 having a depth corresponding to the thickness of the first fixing plate 25 and the surrounding frame 35. Therefore, the depression 37 is used as a guide. By filling the tea leaves A, it is possible to fill the tea leaves A in a predetermined amount without scattering the tea leaves A outside the window portion 29. Therefore, the tea leaves A hardly enter the sewing line 15.

(B) Filter holding process (see FIG. 9)
The filter holding step covers the first filter 5 by placing the second filter 7 on the first filter 5 on which the tea leaves A are set, and placing the second fixing plate 27 having the window portion 31 thereon. In this process, the two filters 5 and 7 are held in a state where the tea leaves A are accommodated between the second filter 7 and the second filter 7.
The processing of the windows 29 and 31 formed on the two fixing plates 25 and 27 used in this step is performed by using the sewing line data corresponding to the outer shape of the tea bag 1 to be manufactured at a predetermined magnification, for example, 10%. It is configured to be executed based on punching line data obtained by enlarging the degree. Specifically, needle holes are continuously formed on the punching line 33 by the sewing device 39 described above, and the window portions 29 and 31 are formed by cutting the needle holes.

(C) Sewing process (see FIG. 10)
In the sewing process, the two filters 5 and 7 held by the two fixing plates 25 and 27 are sewn at predetermined positions inside the window portions 29 and 31 along the shape of the window portions 29 and 31. This is a process of sewing on the line 15.
In this step, first, the filter holder 23 holding the two filters 5 and 7 in the filter holding step is set on the movable frame 45 of the sewing device 39. Specifically, the filter holder 23 is positioned by fitting the positioning holes 26 and 28 into the positioning pin 51, and the ear portions 26 and 28 of the filter holder 23 are not formed by the pressing plate 47. The filter holder 23 is set on the sewing machine body 41 by pressing the other side.

Next, the operation panel 44 of the input device 43A is operated to execute sewing based on the sewing line data. The tea leaves A in the depression 37 of the first filter 5 try to move out of the depression 37 as the movable frame 45 of the sewing device 39 moves in the X and Y directions, but the surrounding frame 35 is on the wall. Therefore, the movement of the tea leaves A is prevented.
When the sewing of the entire circumference of the sewing line 15 is completed, the filter holder 23 is removed in the reverse procedure.

(D) Cutting process (see FIG. 11)
The cutting step is a step of cutting the two filters 5 and 7 sewn in the sewing step along the shape of the window portions 29 and 31.
That is, as shown in the drawing, the cutting die 55 is fitted to the window portion 31 of the second fixed plate 27 with the blade portion 56 downward, and the filter holder 23 in which the cutting die 55 is set is attached to the cutting top plate 63 of the hand press machine 57. And the base 59.

Next, the operator operates the handle 65 to push down the cutting top plate 63 while adjusting the turning angle of the cutting top plate 63, and applies the predetermined pressure required for cutting to sew the two filters 5, 7 together. Cutting is performed at a punching line 33 outside the line 15.
And what was punched out by the said cutting operation turns into the tea bag 1 of this invention used as the product in which the tea leaf A was accommodated in the bag body 3. FIG. When the tea bag 1C with the tag 17 shown in FIG. 4C is prepared, the base of the tag string 19 is attached by heat welding as an example after cutting in this process.

According to the tea bag 1, the tea bag manufacturing apparatus 21 and the tea bag manufacturing method according to the present invention configured as described above, the tea with a unique shape without the risk of the tea leaves A flowing out after the bag 3 is molded. The bag 1 can be manufactured at low cost.
Further, by employing the sewing device 39 with an input function, it becomes possible to easily set and correct a wide variety of external shape patterns using the functions of the sewing device 39.
Furthermore, since an expensive metal mold is not used, the equipment cost is reduced, and the tea bag 1 that can be used for multi-product and small-quantity production can be manufactured.

In addition, the tea bag 1, the tea bag manufacturing apparatus 21, and the tea bag manufacturing method of the present invention are not limited to those of the above-described embodiments, and the design can be changed within the gist of the present invention. For example, the outer shape of the tea bag is not limited to the shape described above, and various outer shapes can be adopted. The shape stored in advance in the sewing device 39 is partially changed, or a plurality of outer shapes are combined. Or may contain characters.
Further, the surrounding frame 35 employed in the above-described embodiment can be omitted. Incidentally, when the surrounding frame 35 is omitted, there is a concern that a part of the tea leaf A may enter the seam on the sewing line 15, but unlike the case of ultrasonic fusion, there is no hollow, so the tea leaf A There is almost no outflow. Further, the productivity can be improved by reducing the number of steps required to create and install the surrounding frame 35 because the surrounding frame 35 is unnecessary.

In the above embodiment, the tea bag 1 is manufactured manually one by one. However, a plurality of filter holders 23 are mounted on a pallet on a conveyor, and an automatic weighing supply device for tea leaves A If the automatic press or the like is arranged in the vicinity of the conveyor, the tea bag 1 having the above-described configuration can be mass-produced.
In addition, other processing machines such as a wire cutting machine, a laser processing machine, or a milling machine can be used for processing the windows 29 and 31 formed on the two fixed plates 25 and 27, and the cutting device 53. However, not only the hand press machine 57 but also an automatic press machine, an ultrasonic cutting machine, a cutter knife, a scissors, or the like may be used, and other various cutting mechanisms having different structures may be employed.

  The tea bag, tea bag manufacturing apparatus, and tea bag manufacturing method of the present invention can be used in tea bag manufacturing sites, tea bag distribution, and fields of use. It has applicability when it is desired to manufacture in a state where the sealing performance without the risk of tea leaves flowing out is maintained.

DESCRIPTION OF SYMBOLS 1 Tea bag 3 Bag body 5 1st filter 7 2nd filter 9 Peripheral part 11 Peripheral part 13 Sewing thread 15 Sewing line 17 Tag 19 Tag string 21 Tea bag manufacturing apparatus 23 Filter holder 25 First fixing plate 26 Ear part 26a Positioning hole 27 Second fixed plate 28 Ear portion 28a Positioning hole 29 Window portion 31 Window portion 33 Punching line 35 Enclosure frame 37 Depression 39 Sewing device 41 Sewing machine main body 43 Input device 44 Operation panel 45 Movable frame 47 Press plate 49 Needle 51 Positioning pin 53 Cutting device 55 Die die 56 Blade portion 57 Hand press machine 59 Base 61 Support post 63 Cutting top plate 65 Handle A Brown leaf X direction Y direction

Claims (10)

In a tea bag comprising a predetermined amount of tea leaves used for one or more extractions, and a bag body that contains the tea leaves and is immersed in hot water or water simultaneously with the tea leaves during extraction,
The bag body is cut into a predetermined outer shape and used in an overlapped manner with two filters,
A tea bag comprising sewing threads that are bent at a predetermined pitch so that tea leaves do not flow around the peripheral portions of the two filters.   The tea bag according to claim 1, wherein the outer shape of the two filters is a heart shape.   The tea bag according to claim 1 or 2, wherein the two filters are made of nylon mesh, and the sewing thread is formed of a polyester synthetic fiber. In a tea bag manufacturing apparatus comprising a predetermined amount of tea leaves used for one or more extractions, and a bag body that contains the tea leaves and is immersed in hot water or water simultaneously with the tea leaves during extraction,
A filter holder provided with two fixing plates having a window portion punched in accordance with the outer shape of the bag,
A sewing device that sews two filters held in a state where the tea leaves are sandwiched between the filter holders at a predetermined position inside the window portion along the shape of the window portion;
An apparatus for manufacturing a tea bag, comprising: a cutting device that cuts two filters sewn by the sewing device into a predetermined outer shape in accordance with the shape of the window portion.   Between the two fixing plates of the filter holder, a surrounding frame having a predetermined thickness is provided so as to surround the window portion formed on the fixing plate. The tea bag manufacturing apparatus according to claim 4.   The said sewing apparatus is comprised by the industrial sewing machine with the input function which can select or produce various sewing shapes and can expand or reduce a sewing line by a predetermined ratio, The sewing machine according to claim 4 or 5 characterized by things. Tea bag manufacturing equipment. The cutting device includes a punching die that is formed in accordance with the shape of the window portion of a strip-shaped plate material having a blade portion formed at one end edge in the longitudinal direction;
7. The apparatus according to claim 4, further comprising a press machine that applies a pressing force to a punching die arranged along the shape of the window portion and punches it into a predetermined outer shape. 2. A tea bag manufacturing apparatus according to item 1. In a tea bag manufacturing method comprising a predetermined amount of tea leaves used for one or more extractions, and a bag body that contains the tea leaves and is immersed in hot water or water simultaneously with the tea leaves during extraction,
A tea leaf in which a first filter is set on a first fixed plate having a window portion punched in accordance with the outer shape of the bag body, and a predetermined amount of tea leaf is placed on the upper surface of the first filter above the window portion. A set process;
A second filter is placed on the first filter on which the tea leaves are set, and a second fixing plate having a window part punched in accordance with the outer shape of the bag body is placed thereon, and the first filter A filter holding step for holding these two filters in a state in which tea leaves are accommodated between the second filter,
A sewing step of sewing two filters held by the two fixing plates at a predetermined position inside the window portion along the shape of the window portion;
And a cutting step for cutting the two filters sewn in the sewing step along the shape of the window portion.   In the tea leaf setting step, a surrounding frame having a predetermined thickness is arranged on the upper surface of the first fixing plate along the window portion, and the first filter is set on the first fixing plate on which the surrounding frame is arranged. The tea bag manufacturing method according to claim 8, wherein the tea bag is configured as described above.   The processing of the window formed on the two fixed plates is performed based on punching line data obtained by enlarging the sewing line data corresponding to the outer shape of the tea bag to be manufactured by a predetermined magnification. The tea bag manufacturing method according to claim 8 or 9, wherein the tea bag is configured.

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