JPH0728825B2 - Coffee bag - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coffee bag and a coffee extraction method capable of quickly and easily extracting an appropriate concentration of coffee from ground coffee beans.

[0002]

2. Description of the Related Art In recent years, various kinds of instant foods have been developed and sold along with westernization and simplification of eating habits.
Regarding black tea and green tea, the proportion of tea bag products in the total production is rapidly increasing, but as for coffee, the taste of each person is very strong and the consumption of regular coffee is still high.

Instant coffee is easy to drink and can be stored in a refrigerator for a long period of time, but it is clearly inferior to regular coffee in terms of aroma peculiar to coffee. The same is true for excellent freeze-dried products. On the other hand, with regular coffee, roasted coffee beans are usually ground immediately before drinking, and therefore the flavor generated during roasting is less diffused.

In order to drink regular coffee, it is necessary to grind roasted coffee beans and then brew them in hot water with a coffee siphon or dripper for a relatively long time. For this reason, 1 ground coffee is now available.
Coffee bags have been commercialized that can be packed into paper bags one cup at a time, and even regular coffee can be drunk without the hassle of instant coffee.

[0005]

However, when hot water is poured into an existing coffee bag, the gas generated from ground coffee beans is filled in the existing coffee bag, so that the coffee bag floats on the hot water. As a result, the hot water does not easily penetrate into the coffee bag, and it takes a very long time to extract the coffee liquid.

To solve the problem that the coffee bag floats up, it has been proposed to use filter paper with coarser pores in the coffee bag. Although coarsening the filter pores alleviates the problem of the coffee bag floating on hot water to some extent, in this case ground coffee grounds powder leaks out of the bag and ground coffee grounds settle at the bottom of the coffee cup. Become.

In addition, there is already a product in which a plastic stick is attached to the upper end of the coffee bag and the stick forces the coffee bag to float above the boiling water. Forcing the coffee bag to sunk with a plastic stick is surprisingly difficult, and clumsy people can get hot water in their hands or flip the coffee cup over.

The present invention has been proposed to improve the above-mentioned problems associated with conventional coffee bags,
It is an object of the present invention to provide a coffee bag in which coffee can be quickly extracted without losing the original aroma of regular coffee. Another object of the present invention is to provide a coffee extraction method capable of easily extracting an appropriate concentration of coffee from the ground coffee beans filled.

[0009]

In order to achieve the above object, a coffee bag 1 according to the present invention is a filter for filling and enclosing an appropriate amount of ground coffee beans 2 (FIG. 3) as shown in FIG. It has a bag main body 3 made of a material, a thin pipe 4 which penetrates from the upper edge portion of the bag main body 3 into the inside of the bag main body, and a storage bag body 5 in which the bag main body 3 is put and sealed.

The bag body 3 used in the present invention is a closed bag in which a suitable amount of ground coffee beans 2 is filled and then the periphery of a filter material such as a filter paper, a filter cloth or a filter felt is adhered. Peripheral adhesion of the filter material may be performed by heat sealing, sewing with a sewing machine, application of an adhesive, or the like.

The thin pipe 4 used in the present invention is generally an extruded plastic product, but may be a straw, a rubber product, a metal product, or the like, which is naturally produced. The thin pipe 4 is generally a nested double pipe composed of an outer tubular portion 6 and an inner tubular portion 7, and it is preferable that the lower end of the thin pipe 4 is located at about 1/3 of the total height from the inner bottom end of the bag body 3. In the thin pipe 4, the filter material of the bag body 3 may be adhered to the outer circumference of the upper end portion of the outer tubular portion 6, and the inner tubular portion 7 may be pulled out at the time of use.

[0012]

[0013]

The coffee bag 1 according to the present invention is placed in a coffee cup 8 as illustrated in FIG. 4, and hot water is poured from above the bag. The gas generated from the ground coffee beans 2 inside the bag passes through the thin pipe 4 and escapes to the outside, so that the inside of the bag is not pressurized and the hot water quickly permeates into the inside of the bag. At the same time, if the bag body 3 is shaken while holding the thin pipe 4, the coffee liquid can be quickly extracted.

In the coffee bag 1 of the present invention, when pouring hot water, it does not float up on the hot water, so there is no need to use a filter material having pores coarser than before, and as a result, fine powder of ground coffee beans 2 is placed outside the bag. It never leaks.
Further, since the hot water quickly permeates into the bag, the amount of ground coffee beans 2 to be filled in the bag body 3 can be reduced by about 10 to 15% as compared with the conventional case.

[0015]

EXAMPLES Next, the present invention will be described based on examples. FIG. 1 shows a coffee bag 1 of the present invention. The coffee bag 1 has a bag main body 3 that is filled with a suitable amount of ground coffee beans 2 (FIG. 3) and enclosed therein, and a thin pipe 4 that vertically penetrates from the center of the upper edge of the bag main body 3 into the bag main body. The filter material of the bag body 3 is, for example, 60 ×
It is a known filter paper 10 having a rectangular plane of 85 mm.
This filter paper is made by mixing nylon resin into chemical pulp and straining it thinly.
Heat seal.

The bag body 3 is filled with about 5 to 6 g of ground coffee beans 2 which is slightly smaller than the conventional one, and then,
It is a sealed bag in which the entire circumference of the front and back filter materials is adhered. The bag main body 3 retains the aroma peculiar to coffee in the ground coffee beans 2 obtained by grinding roasted coffee beans by putting the bag body 3 in a moisture-proof storage bag body 5 (see the one-dot chain line in FIG. 1) and sealing it. .

The thin pipe 4, which is an extruded product of hard plastic, is generally a nested double pipe composed of an outer tubular portion 6 and an inner tubular portion 7, and the inner tubular portion 7 is not detached from the outer tubular portion 6. Is configured as follows. In the thin pipe 4, for example, the inner cylinder portion 7 has an inner diameter of about 3 mm and a length of about 50 mm.
The inner cylinder portion 7 is slidably inserted into the outer cylinder portion 6 of the above, and the length when contracted is about 60 mm and the length when expanded reaches about 100 mm.

The filter paper 10 on the front and back of the bag body 3 is adhered and adhered to the outer periphery of the upper end of the pipe outer cylinder 6, and the entire peripheral portion 11 of the filter paper is heat-sealed. The length of the outer tube portion 6 of the thin pipe 4 is penetrated into the inside of the bag body 3, so that the lower end of the pipe is about 1 of the total height of the bag body 3.
Reach deeper than / 2.

In the coffee bag 1, the thin pipe 4 is contracted as shown in FIG. 1 at the time of sale and packaging, and the inner cylinder portion 7 is pulled out to extend the thin pipe 4 at the time of use as shown in FIG. After the thin pipe 4 is extended, the coffee bag 1 is put in the coffee cup 8 (FIG. 4), and the hot water is poured from above the bag while holding the upper end of the thin pipe 4.

When the ground coffee beans 2 inside the bag are heated with hot water, gases such as carbon dioxide originally held by the ground coffee beans are released, but this gas passes through the thin pipe and escapes to the outside. Put out. As a result, the bag body 3
Since the inside of the container is not pressurized by the released gas, the hot water quickly permeates the inside of the bag body 3, and the coffee bag 1 does not float on the hot water when the hot water is poured.

With the thin pipe 4, the bag body 3 can be shaken back and forth while pouring hot water.
The thin pipe 4 is much stiffer than the thread of the conventional tape bag, and the lower end portion of the pipe is the filter paper 1 on the front and back of the bag body 3.
Since it comes into contact with 0, the bag body 3 can be surely shaken and the extraction of the coffee liquid can be promoted.

The following table shows an experimental example in which the coffee bag 1 was extracted with hot water for 2 minutes together with a conventional commercial coffee bag.

[0023]

[Table 1]

From the above table, when the coffee bag 1 is used, the coffee liquid can be extracted with hot water more quickly than before. As a result, when the coffee bag 1 is used, even if the amount of ground coffee beans 2 used to fill the bag body 3 is reduced by about 10 to 15% as compared with the conventional case, the same coffee extract as in the conventional case can be obtained.

[0025]

[0026]

As in the conventional case, the coffee bag according to the present invention is simply put in the coffee cup and poured with hot water from above. At this time, the gas generated from the ground coffee beans inside the bag passes through the thin pipe and escapes to the outside, so that the hot water is quickly permeated into the bag without increasing the pressure inside the bag. At the same time, shake the bag body with a thin pipe to quickly extract the coffee liquid,
The extraction time is about 1/3 of the conventional time.

In the coffee bag of the present invention, when pouring hot water, it does not float up on the hot water, so there is no need to use a filter material with pores coarser than before, and as a result, fine ground coffee beans leak to the outside of the bag. And the ground bean fine powder does not settle on the bottom of the coffee cup. Further, since the hot water quickly permeates into the bag, the amount of ground coffee beans used to fill the bag body can be reduced by about 10 to 15% as compared with the conventional case.

With the coffee bag of the present invention, it suffices to simply pour boiling water, and there is no need to forcibly sink the coffee bag above the boiling water with a mounting rod or the like. For this reason, regular coffee can be easily drunk without the time and effort required for instant coffee, without the need for hot water to come into contact with the coffee or to flip the coffee cup over.

[Brief description of drawings]

FIG. 1 is a schematic side view showing a coffee bag according to the present invention.

FIG. 2 is a schematic side view showing a modified example of the present invention.

3 is a partially cutaway cross-sectional view taken along line AA of FIG.

FIG. 4 is a side view showing a usage state of the coffee bag of FIG.

[Explanation of symbols]

 1 Coffee Bag 2 Ground Coffee Beans 3 Bag Body 4 Thin Pipe 5 Storage Bag Body 6 Outer Cylinder 7 Inner Cylinder 8 Coffee Cup

Claims (1)

[Claims] 1. An appropriate amount of ground coffee beans is filled and enclosed.
The bag body is entirely made of filter material, and the upper edge of the bag body penetrates the inside of the bag body , and the lower end of the bag body is a bag.
It has a thin pipe that reaches a position deeper than about 1/2 of the total height of the main body of the bag, and a storage bag body that puts the bag body and seals it.
The thin pipe is a nested double pie consisting of an outer cylinder and an inner cylinder.
The bag body fills the outer periphery of the upper end of the outer cylinder.
Glue the material, pull out the inner cylinder at the time of use , pour hot water into the bag taken out of the storage bag, let the gas generated from ground coffee beans escape to the outside through a thin pipe ,
A coffee bag that shakes the bag body with a thin pipe at the same time .