JPH0574434U - Extraction filter - Google Patents

Abstract

(57) [Summary] [Purpose] Extraction filter that can be inserted into an existing container to freely select black tea, green tea, coffee, etc. according to the user's preference and to make it a taste of individual taste. To provide. [Structure] A cup-shaped container obtained by hot-pressing a single sheet of thermoplastic synthetic fiber non-woven fabric, which is characterized in that it has a flange portion (2) and a handle portion (3) around the flange portion. Extraction filter (1).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an extraction filter that can be inserted into an existing container to easily extract beverages such as black tea, green tea, and coffee.

[0002]

[Prior Art]

 Conventionally, there are a tea bag method and a drip method as a method for easily extracting tea, green tea, coffee and the like. First, the Tibac method is generally well known in which a sheet-shaped filter material such as paper, woven fabric, and non-woven fabric is made into a small bag and filled with a substance to be extracted such as black tea, green tea, and coffee. Usually, the tea bag method can be easily extracted by putting a small bag filled with black tea, green tea, coffee, etc. in an existing container and pouring hot water.

On the other hand, the tiback method has the following problems. That is, since the extractables such as black tea, green tea, and coffee are packed inside the filter pouch, there is no room in the volume inside the filter, and the extractables swell, expand, and expand. It is restricted, therefore, the substance to be extracted inside the sachet can hardly move, and it is difficult to perform effective extraction.If the extraction is lengthened, bitterness and astringency are likely to occur and the flavor is damaged. There is.

As a method for extracting regular coffee, a filter and a regular coffee extract are placed on the upper part of the cup container, and hot water is poured onto the extract to drop the extract into the cup container through the filter. It has been known. Examples of this method include a drip system in which a paper filter for coffee is installed in a funnel-shaped holder, or a simple extractor disclosed in Japanese Utility Model Publication No. 60-7623 and Japanese Utility Model Publication No. 62-66714. is there.

However, in any of these methods, the extraction degree varies greatly depending on the particle size of the material to be extracted, the state of brewing, the accuracy of the filter, the attachment condition, etc., because the extraction is performed by spontaneous falling of hot water. There is a big problem that it cannot be adjusted.

[0006]

[Problems to be solved by the device]

 The present invention solves the above problems, and an object of the present invention is to provide an extraction filter having a large volume in which the substance to be extracted can sufficiently contact with almost all of the poured hot water and swells, expands, and expands. It is what

[0007]

[Means for Solving the Problems]

 That is, the present invention is a cup-shaped container formed by hot pressing from a single piece of thermoplastic synthetic fiber nonwoven fabric, wherein the container has a flange portion (2) and a handle portion (3) around the flange portion. And an extraction filter (1) having an integrated container shape.

As shown in FIG. 3, the extraction filter (1) of the present invention is inserted into an existing cup-shaped container (4) so that it comes into contact with the bottom surface of the existing container, and then the substance to be extracted is extracted. It is placed in the filter (1) and further poured with hot water (6) so that the substance to be extracted is in sufficient contact with almost all the poured hot water to swell, extend and expand. Then, after the extraction effective for the taste desired by the user is completed, it can be taken out from the existing container by holding the extraction filter handle (3).

The extraction filter (1) of the present invention can be inserted into an existing cup-shaped container (4) such as a paper cup, a plastic cup, a pottery, etc., and the bottom of the extraction filter (1) can be inserted into an existing cup-shaped container (4). The shape and size of contact with the bottom surface of 4) are selected. On the other hand, when the extraction filter (1) is attached to the upper part of the existing cup-shaped container (4) and is not sufficiently inserted into the existing container (4), the substance to be extracted and the poured hot water are However, it cannot be contacted enough and effective extraction cannot be performed.

The thermoplastic synthetic fiber non-woven fabric used in the present invention is not particularly limited in material and manufacturing method. For example, polyester fiber, polyolefin fiber, polyamide fiber, polyethylene-polyester fiber, polypropylene-polyester fiber, etc. It can be obtained by a known production method such as a spun bond method, a needle punch method, or a thermal bond method, using a single fiber such as a conjugate fiber or a copolymer fiber, or a mixture of two or more kinds of fibers.

The non-woven fabric used in the present invention is stretched and molded into a cup-shaped container shape by hot press molding including the flange portion, so that it may have sufficient elongation at the processing temperature, for example, 100% or more. It is suitable. Then, the extraction filter (1) of the present invention needs to have a flange part (2) and a handle part (3). That is, the extraction filter obtained by hot pressing the above nonwoven fabric into a cup-shaped container shape has a continuous fiber density and an average value from the bottom of the extraction filter to the side, mouth and flange. The unit weight increases and the rigidity gradually increases.

Therefore, it is important to have a flange portion in terms of shape retention, rigidity addition, and handling. Practically, the flange portion is preferably 0.5 to 10 mm. On the other hand, when there is no flange, the shape retention of the mouth of the extraction filter becomes unstable, and when pouring hot water, there is a problem that it will get into the existing container. Further, having the handle part (3) makes it very convenient for a state where several products are stacked and for handling after use. As shown in FIG. 2, the handle portion (3) has a length of 5 to 20 mm and may be provided at one or two places around the flange portion. Then, even if a string is attached to the handle portion, it is preferably used.

The thermoplastic synthetic fiber non-woven fabric used in the present invention is expanded into an extraction filter by hot press molding, so that its area is expanded by about 2 to 10 times. Therefore, the basis weight of the nonwoven fabric is preferably 30 to 300 g / m ² and the fineness is 0.5 to 15 denier. More preferably, a basis weight of 50 to 250 g / m ² and a fineness of 1.0 to 10 denier are used. These conditions are necessary in order to retain the shape of the molded product while performing the extension process in the press molding which is the object of the present invention, and the extraction filter obtained does not permeate the substance to be extracted but only the extract liquid. Is.

If the basis weight is 30 g / m ² or less, the shape retention of the molded product may be poor, and the fiber gap may become large, so that the substance to be extracted may easily permeate. On the other hand, when the basis weight is 300 g / m ² or more, problems such as poor elongation processability of press molding and difficulty in permeation of the extraction liquid occur. When the fineness is 0.5 denier or less, the elongation processability of the press molding is poor, and it becomes difficult for the extract to permeate, resulting in poor shape retention of the molded product. Further, when the fineness is 15 denier or more, there is a problem that the fiber gap becomes large and the substance to be extracted easily permeates.

Next, the extraction filter of the present invention can be preferably used for the purpose of extracting substances to be extracted such as black tea, green tea and coffee. At that time, when pouring hot water onto the substance to be extracted, it is necessary that the powder and leaves are not leaked from the fiber gaps of the extraction filter and that the extraction liquid is sufficiently permeated. Therefore, the fiber gap at the bottom and the lower part of the side surface of the extraction filter of the present invention is 5 to 50 μm, preferably 10 to 30 μm for coffee powder, 100 to 1000 μm for black tea and green tea, and preferably 200 to It is 800 μm.

The fiber gap is measured by taking a magnified photograph of the surface condition of a coarse portion (a relatively lightly visually noticeable portion) in a 1 m ² non-woven fabric sample with a microscope (magnification 50). From the truth, as shown in FIG. 4, the distance d in the diagonal direction of the polygonal void portion constituted by the plurality of filaments 7 was measured. The measurement was performed at 20 points, and the fiber gap was expressed in the range of the minimum value to the maximum value.

[0017]

【Example】

 Examples of the present invention will be shown below.

[0018]

Example 1 A thermoplastic synthetic fiber non-woven fabric having a basis weight of 50 g / m ² made of polyester long fibers having an average fineness of about 4 denier and a breaking elongation at 120 ° C. of 300% was obtained. In addition, two thick metal plates were prepared, each having a hole 10 mm smaller than the diameter of the existing container (4). The non-woven fabric is firmly sandwiched between these two metal plates, and a convex mold 10 mm deeper than the existing container (4) is heated to approximately 120 ° C. and pushed into the non-woven fabric sandwiched between the metal plates. It was pressed and stretch-molded to obtain an extraction filter (1).

The obtained extraction filter (1) was cut (FIGS. 1 and 2) so as to obtain a flange portion (2) having a width of 5 mm and a handle portion (3) having a width of 10 mm at two places. When the average areal weight and the fiber gap of the obtained filter were measured, the flange was 49 g / m ² , 50 to 110 μm, the side was 18 g / m ² , 180 to 440 μm, and the bottom was 12 g / m ² 280. Was about 760 μm.

The obtained extraction filter (1) was inserted into the existing cup-shaped container (4) shown in FIG. 3, 2 g of canned black tea was put therein, and 150 ml of boiling water (6) was poured. The leaves of the black tea in the existing container (4), which was in sufficient contact with almost all the hot water, swelled, expanded and opened, expanded, and the color of the black tea appeared. did it.

60 seconds after pouring hot water, the handle (3) of the extraction filter was grasped, and it was possible to lift it gently and throw it away with the tea leaves. The extract obtained was a wonderful aroma and delicious black tea.

[0022]

[Comparative Example 1] Carefully tear a part of a commercially available tea bag of teabag, discard the black tea inside, and put 2 g of the canned tea used in Example 1 instead, and seal the tear like the original bag did. The obtained tibag was placed in an existing container (4) similar to that of Example 1, and 150 ml of boiling water was poured.

Only a slight diffusion of black tea color was observed, and after 60 seconds, when the tea bag was taken out, only black tea with a light aroma was obtained, and tasting did not prove to be delicious black tea. When tea leaves were taken out from the bag after use and examined, it was found that phenomena such as sufficient swelling, expansion and expansion did not occur in the rolled state.

[0024]

[Effect of the device]

 The extraction filter of the present invention allows the material to be extracted to quickly swell and expand in a large container that can fully utilize the hot water used, and the leaves open and expand, resulting in effective extraction in a short time. It is possible and the substance to be extracted does not easily pass through the filter. Further, the caliber is large, and the substance to be extracted and hot water can be easily added, and the handleability is good.

Further, as long as the extraction filter can be inserted, any existing container can be used, and the substance to be extracted can be freely selected according to the taste of the user, which is versatile. ..

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing an extraction filter of the present invention.

FIG. 2 is a schematic plan view showing an extraction filter of the present invention.

FIG. 3 is a schematic sectional view illustrating a method of using the extraction filter of the present invention.

FIG. 4 is an enlarged plan view of a nonwoven fabric schematically showing a method for measuring fiber gaps.

[Explanation of symbols]

 1-Extraction filter 2-Flange part 3-Handle part 4-Existing container 5-Extracted product 6-Hot water 7-Filament d-Fiber gap

Claims (1)

[Scope of utility model registration request] 1. A cup-shaped container formed by hot pressing from a single piece of thermoplastic synthetic fiber nonwoven fabric, the container having a flange portion (2) and a handle portion (3) around the flange portion. An extraction filter (1) having an integrated container shape.