JPH08182613A - Filtration vessel for filtrating coffee, filtration device using the vessel, and method for use thereof - Google Patents

Abstract

PURPOSE: To provide a filtration vessel for filtrating coffee and a filtration device using the vessel, not bulky for storage and housing purposes, allowing an easy operation and ensuring a low price, together with a method for using the vessel. CONSTITUTION: An approximately trapezoidal bag made of a base material of nonwoven fabric, paper or a synthetic resin film, is formed out of a bag 10 with an opening on the side corresponding to the bottom of a trapezoid, and a hard plate 2 mounted along the edge of the opening 11 of the bag 10, with a fold 9 formed thereon so as to allow easy bending. Furthermore, at least one hole of a diameter approximately between 2 and 15mm is opened through the bottom 5 of the bag 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter container for coffee filtration, a filter device using the same, and a method of using the filter container. More specifically, it is a coffee filter container mainly intended for a small number of people of about 1 to 2 people, is easy to assemble, and after assembling, inserts a disposable inner bag such as a filter paper bag, Then, if you put it on a cup etc. and extract coffee, you can easily get coffee, and you can easily discard the extracted grounds with the inner bag and reuse it repeatedly. The present invention relates to a filter container for coffee filtration, a filter device using the same, and a method of using the filter container.

[0002]

2. Description of the Related Art Conventionally, coffee has been widely used as a favorite beverage by people all over the world. And this coffee extraction technology has been variously improved since ancient times,
It can be roughly classified into a filtration method and a boiling method.

That is, the filtration system is a so-called drip system and is a system invented by Dou-Péroy in France.

The boiling method is a so-called siphon method, and a siphon method using a ball was invented in the United States, and it has become the mainstream of filtering coffee along with the drip method.

The system using a disposable paper filter is a system developed in the United States after World War II.

This method is called a paper drip method, and a disk-shaped stand having a size that can be placed on the edge of the cup is attached to the lower part of the funnel-type filtering device, and a drip method of filtering with a paper filter is used. It is marketed as Carita and Melita (both are trade names).

[0007]

The present invention provides a method for filtering coffee using a disposable paper filter,
The present invention relates to a drip type filter for filtering, and solves all the problems of the filter containers supporting the paper filters of Karita and Melita currently on the market.

[0008] That is, the filter containers supporting the paper filters of Carita and Melita currently on the market are made of synthetic resin or ceramic solid moldings, and their shapes are
It is a cubic hollow casing with one side of about 8 cm, and is bulky. Therefore, it is a factor of cost increase in all operations affected by the external shape of the filtration container such as packaging and transportation in the manufacturing process. In addition, in a general household, there is a problem that a relatively large space is required when the filtration container is stored in a storage rack in the kitchen when it is not used.

The present invention has been made to solve the above problems, and is not bulky during storage and storage, can be easily used, and is inexpensive, and a filter container for coffee filtration and It is an object of the present invention to provide a filtration device using the same and a method of using the filtration container.

[0010]

A filter container for filtering coffee according to the present invention is a substantially trapezoidal bag made of a base material made of non-woven fabric, paper or a synthetic resin film. It consists of a bag whose corresponding side is opened, and a hard plate having folds for facilitating bending, which is mounted along the edge of the opening of the bag, and has a diameter of 2 to 2 at the bottom of the bag.
It is characterized in that at least one hole of about 15 mm is opened.

The hard plates are attached to both sides of the bag one by one, and the folds have a hexagonal shape so that the bag has a hexagonal shape when the folds are bent outward.
It is preferable that two hard plates each be formed.

The bag is preferably made by injection molding a synthetic resin.

It is preferable that the base material contains 30% by weight or more of a synthetic fiber that can be heat-bonded to a nonwoven fabric or paper.

Further, the filtration device of the present invention comprises:
And a disposable inner bag made of paper or non-woven fabric to be inserted into the inside of the filtration container.

Further, the method of using the filtration container of the present invention is as follows.
(A) By bending the fold line of the hard plate toward the outside, the edge of the opening of the bag is deformed so as to have a polygonal shape, and (b) the bag bottom is pushed into the opening, and the entire bag is turned upside down. c) A disposable inner bag made of paper or non-woven fabric is inserted into the inside of the turned bag, and (d) the inside of the turned bag is inserted into the cup, and the folded edge is inserted into the cup. It is mounted on the upper part of the cup by placing it on the edge of the cup, (e) the coffee powder is put into the inner bag, (f) hot water is poured into the inner bag, and (g) the inner bag. It is characterized in that the extraction liquid extracted through the base material of the bag is stored in a cup.

[0016]

The filtration container of the present invention can be easily and repeatedly reused as long as the filtration container and a disposable inner bag such as a paper filter are provided. The main features are as follows.

(1) Since the filtration container before use is in the shape of a folded bag, it is convenient to carry, is not bulky to store, and does not take up much space.

(2) When in use, the fold line of the hard plate attached to the opening is bent outward to form a polygonal opening which is a spout of hot water, and then the bottom of the bag is pushed into the opening to turn the bag over, Insert an inner bag such as a paper filter inside. The inner bag with the inner bag inserted is placed on the edge of the cup, and hot water is poured from the mouth of the inner bag to extract coffee.

(3) After the coffee is extracted, if the inner bag is taken out from the inside of the bag, the coffee grounds can be easily discarded to the outside, and the bag can be easily washed and can be repeatedly used.

(4) When a polygonal filter container made of a hard plate is placed on the edge of a perfect circular cup, the inside of the cup can be seen through the arc portion formed by the filter container and the cup. The injection can be adjusted.

(5) Since it is made of a woven or non-woven fabric made of synthetic fiber or the like, it can be mass-produced inexpensively by an automatic bag-making machine.

[0022]

EXAMPLES Next, the filtration container for liquid filtration of the present invention, the filtration device using the same, and the method of using the filtration container will be described with reference to the accompanying drawings.

FIG. 1 is a front view of the filtration container of the present invention, FIG. 2 is a sectional view taken along line II-II of the filtration container of FIG. 1, and FIG. 3 is an explanatory view showing a state in which the opening of the filtration container of FIG. 1 is expanded. Yes ((a) is a view seen from the opening side, (b) is a view seen from the bottom side), FIG. 4 is an explanatory view showing a state in which the bottom of the bag is being pushed into the opening of the filtration container of FIG. 5 is an explanatory view showing a state in which the bottom of the bag is completely pushed into the opening of the filtration container of FIG. 1 and the entire bag is turned upside down. FIG. 6 is the use of the paper filter bag inserted inside the filtration container of FIG. The front view showing the previous state, FIG. 7 is a VII-VII of the paper filter bag of FIG.
FIG. 8 is a sectional view taken along the line, FIG. 8 is an explanatory view showing a state where the paper filter bag of FIG. 6 is inserted into the inside of the filtration container of FIG. 1, and FIG. 9 is a state where the everted filtration container of FIG. 5 is placed on a coffee cup. It is an explanatory view shown.

The filtration container 21 shown in FIGS. 1 and 2 comprises a base material 1 which also serves as a filter and a bag, and a hard plate 2 for fixing the opening of the base material 1 into a hexagonal opening. ing.

The base material 1 is integrally formed so that the front surface 3 and the rear surface 4 are connected at the bottom portion 5, and the side surfaces of the front surface 3 and the rear surface 4 are adhered to each other by heat sealing to form a bag. It is formed into a shape. Reference numeral 6 indicates a heat seal portion. Further, as shown in FIG. 2, the mouth portion of the base material 1 formed in a bag shape is folded back, and the hard plates 2 are attached inside the folded portion 7 on the front surface and the rear surface, respectively. The hard plate 2 is sealed by heat sealing near the edge. Reference numeral 8 indicates a heat seal portion. Further, two folds 9 are formed at appropriate places on the hard plate 2 along the width direction of the hard plate 2. A hexagonal opening can be formed by bending the two hard plates 2 so that the fold 9 projects outward. Further, a plurality of circular holes A ₁ and semi-circular holes A ₂ are formed in the portion of the base material 1 that constitutes the bag bottom by punching through the same positions of the front surface 3 and the rear surface 4. The semi-circular hole A ₂ is formed so that the part corresponding to the chord thereof coincides with the fold line B located at the boundary between the front surface 3 and the rear surface 4.

The circular hole A ₁ and the semi-circular hole A ₂ are provided to adjust the falling speed of the extract. Therefore, even if the total area is the same when 9 holes with a diameter of 6 mm are drilled from one with a diameter of 15 mm, the coffee liquid drops on average from the adjustment of the falling speed and the average falling state of the extract. And the extraction speed is stable. Also, the size of one hole is stable from the shape stability of the bag bottom at the time of extraction.
It is preferable that the diameter is 5 to 8 mm, and the number of holes may be appropriately changed in order to speed up the dropping speed.
If these diameters are smaller than 2 mm, the dropping speed of the extraction liquid becomes slow, and if they are larger than 15 mm, the shape stability of the bottom of the bag becomes poor, so it is designed to fall within the range of 2 to 15 mm. The number and arrangement of the circular holes A ₁ and the semicircular holes A ₂ may be appropriately changed depending on the dropping speed of the extract and the shape stability of the bag bottom.

In the present embodiment, an example in which two folds 9 are formed on each of the two hard plates 2 has been described, but the present invention is not limited to this, and is appropriate. The shape of the opening obtained when the hard plate is bent may be changed by changing the number. Among them, it is preferable that two folds 9 are formed on each of the two hard plates 2 so that a hexagonal opening that can fit the opening end of the cup can be formed with a small number of folds.

Further, the filter container needs to have a heat-sealing property so that it can be mass-produced, and the base material 1 for forming the bag is a woven fabric or a non-woven fabric which already meets these conditions.

Therefore, as the base material 1, 30% (by weight; synthetic fiber such as polyolefin-based, polyester-based, polyamide-based, polyacryl-based, etc.) synthetic fibers which can be heat-bonded under the condition of heat-sealing can be used. ) It is preferable that the above is mixed. In particular, polyolefin-based synthetic fibers are most preferable from the viewpoints of heat bonding and food hygiene.

In the case of a non-woven fabric, a polyolefin-based synthetic fiber such as N. B. F (trade name, manufactured by Daiwa Spinning Co., Ltd.), Sofite (trade name, manufactured by Kuraray Co., Ltd.),
E. FIG. At least 3 S fibers (trade name, manufactured by Chisso Corporation)
It is preferable that 0% or more is mixed. In particular, a non-woven fabric made of polyester and polyethylene fibers having a core-sheath structure, for example, Elves (trade name, manufactured by Unitika Ltd.) having a weight of 50 to 100 g per square meter is the best. The non-woven fabric made of Elves does not cause shrinkage rigidity in hot water and is hydrophobic, so that the non-woven fabric after filtering coffee is hardly contaminated.

The thickness of the film requires a certain degree of flexibility so that the bag of the filtration container can be smoothly turned inside out, and is 0.0
A film thickness of 5 to 0.15 mm is preferable.

By inserting a disposable inner bag made of paper or non-woven fabric, for example, a paper filter bag 22 for the purpose of filtering coffee into the inside of the above-mentioned filtration container 21, a drip-type filtration device 23 can be easily manufactured. can do. An example of the filtering device 23 is shown in FIG.

Further, the base material 1 for forming the bag of the filtration container can be easily molded by injection molding or the like in the case of a synthetic resin such as a polyolefin type, a polyester type, a polyamide type or a polyacrylic type. In particular, it is preferable to use a polyolefin-based synthetic fiber such as polypropylene because it is inexpensive and has sufficient hot water resistance in terms of food hygiene.

Next, the hard plate 2 for assembling the filtration container has no problem in food hygiene, and does not change its shape even if it is exposed to hot water. Especially, it functions as a bridge over the edge of the cup. On the other hand, it is preferably made of a material having rigidity and stiffness. Considering these conditions, a hard plate having a thickness of about 0.2 to 1.0 mm and made of a polyester-based or polypropylene-based resin is optimal. When the base material 1 is a synthetic resin film, the base material 1 and the hard plate 2 can be integrally formed.

The paper filter bag 22 shown in FIGS. 6 to 7 may be a commercially available bag as long as it can be brought into contact with the inside of the filter container of the present invention without any resistance for the purpose of extracting and filtering coffee, and in particular, the shape or the manufacturing method is not limited. The shape and the manufacturing method may be appropriately selected without limitation. For example, a mixed fiber of synthetic fibers, especially polyester and polyolefin fibers, is preferable to the currently commercially available paper filter with 100% crepe pulp.

The reason is that polyester fiber is 30
% Or more, the base material has rigidity in hot water, and the shape of the paper filter bag can be stably maintained. In addition, 30% of polyolefin fiber
When mixed in the above manner, heat-sealed bags can be manufactured, mass production is possible, and lipophilic properties are provided, so that the oil fluctuation of the coffee cup surface is absorbed.

Next, one embodiment of the method of using the filtration container of the present invention will be described with reference to FIGS.

First, the filtration container 21 is deformed. That is, as shown in FIG. 3A, a hexagonal opening 11 is formed by bending the folds 9 of the two hard plates 2 at the upper end of the bag 10 made of the base material outward. At this time, as shown in FIG. 3 (b), the fold B at the bottom of the bag is extended, so that the front and rear semicircular holes A ₂ form a circular hole having the same shape as the circular hole A _1. Form.

Then, as shown in FIGS. 4 to 5, the bottom portion 5 of the bag 10 is pushed into the opening 11 and the entire bag is turned upside down.

Further, as shown in FIG. 8, the paper filter bag 22 is inserted inside the bag 10 which has been turned upside down.

Thereafter, as shown in FIG. 9, the bag 10 which has been turned upside down is inserted into the cup C with the bottom portion 5 thereof, and the edge 13 of the bag 10 is placed on the outer peripheral surface of the cup C. Then, it is attached to the upper part of the cup C. At this time, the rim 13 fits into the open end E of the C of the cup with almost no clearance so that the bag does not slip off, fall off, or deflate.

After that, coffee powder is put into the inside of the paper filter bag 22, hot water is poured into the inside of the paper filter bag 22 and is extracted through the cloth of the paper filter bag 22, and the hole A _{1 at} the bottom of the bag is used. And if the extract flowing out from A ₂ is stored in a cup, coffee can be obtained.

[0043]

As described above, the filter container of the present invention is easy to assemble, and the filter container is assembled, and after the disposable inner bag is inserted into the filter container, the filter container is placed on a cup or the like and the coffee As long as it is extracted, coffee can be easily obtained, and if the inner bag is taken out from the inside of the bag, the extracted grounds can be easily discarded,
It can be used repeatedly. In particular, when using the filtration container of the present invention, easily, even in the general household,
You can also drink real coffee in the field with a drip formula.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a filtration container of the present invention.

FIG. 2 is a cross-sectional view taken along line II-II of the filtration container of FIG.

3A and 3B are explanatory views showing a state where the opening of the filtration container of FIG. 1 is expanded, FIG. 3A is a view seen from the opening side, and FIG. 3B is a view seen from the bottom side.

4 is an explanatory view showing a state in which the bottom portion of the bag is being pushed into the opening of the filtration container in FIG. 1. FIG.

5 is an explanatory view showing a state in which the bottom of the bag is completely pushed into the opening of the filtration container in FIG. 1 and the entire bag is turned upside down.

FIG. 6 is a front view showing a state before use of the paper filter bag inserted into the inside of the filtration container of FIG.

7 is a sectional view of the paper filter bag of FIG. 6 taken along the line VII-VII.

FIG. 8 is an explanatory view showing a state in which the paper filter bag of FIG. 6 is inserted inside the filtration container of FIG.

9 is an explanatory view showing a state in which the inverted filtration container of FIG. 5 is placed on a coffee cup.

[Explanation of symbols]

 1 Base Material 2 Hard Plate 5 Bottom 9 Fold 10 Bag 11 Opening 13 Edge 21 Filtration Container 22 Paper Filter Bag 23 Filtration Device C Cup

Claims (6)

[Claims] 1. A bag having a substantially trapezoidal shape made of a base material made of non-woven fabric, paper or a synthetic resin film, in which the side corresponding to the bottom of the trapezoid is opened, and the opening of the bag. It consists of a hard plate having folds for facilitating bending, which is attached along the edge, and has a diameter of 2 to 2 at the bottom of the bag.
A filter container for filtering coffee, wherein at least one hole of about 15 mm is opened. 2. The hard plate is attached to both sides of the bag one by one, and the hard plate has one fold so that the opening of the bag has a hexagonal shape by being bent outward at the fold. The filtration container according to claim 1, wherein each of the two filtration containers is formed. 3. The filtration container according to claim 1, wherein the bag is made by injection molding a synthetic resin. 4. The filtration container according to claim 1, wherein the base material contains 30% by weight or more of a synthetic fiber that can be heat-bonded to a nonwoven fabric or paper. 5. A filter device for coffee filtration, comprising: the filter container according to claim 1; and a disposable inner bag made of paper or non-woven fabric inserted into the filter container. 6. The method of using the filtration container according to claim 1, wherein (a) the folds of the hard plate are bent outward so that the edge of the opening of the bag is deformed to have a polygonal shape. (B) push the bottom of the bag into the opening,
Flip the entire bag, (c) insert a disposable inner bag made of paper or non-woven into the inside of the inside-out bag, and (d) insert the inside-out bag inside the cup and fold the inside-out bag inside. Placed on the top of the cup by placing the edge of the cup on the edge of the cup, (e) pouring coffee powder into the inner bag, and (f) pouring hot water into the inner bag. (G) A method of using a filtration container for coffee filtration, characterized in that the extraction liquid extracted through the base material of the inner bag is stored in a cup.