JPH03218711A - Extracting bag - Google Patents

Abstract

PURPOSE:To stably hold the extracting bag in an open state and to easily and efficiently perform the extracting operation by providing a shape holding member for holding a bag body in an open state, when the opening part is opened. CONSTITUTION:On a rear face part 4 of a bat body 2 of an extracting bag 1, a detaining member 6 is stuck and fixed. This detaining member 6 consists of a detaining piece 8 held by a shape holding member 7. On a sheet for forming the shape holding member 7, a notch is made in a shape of the detaining piece 8, and the detaining piece 8 is raised up from the shape holding member 7, and continued to the shape holding member 7 by a continuous part 9. At for the extracting operation, the detaining piece 8 is raised up from the shape holding member 7, it is detained to the upper end edge, for instance, of a glass, the upper end opening part of the bag body 2 is opened, a desired extracted material, for instance, coffee powder is put by a prescribed quantity into the bag body, and it is extracted by pouring hot water thereto from the upper part.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an extraction bag, and more specifically, the present invention relates to an extraction bag.
This invention relates to an extraction bag that can stably maintain its shape in an open state when performing extraction by pouring an extraction liquid such as hot water into the bag. [Prior Art] Extraction bags conventionally used for tea and the like store the material to be extracted in a bag body made of a water-permeable permeable material, and then pour the material into an extraction solution, such as boiling water. , the necessary extraction operation was performed, or a hanging string was attached to the bag body and the hanging string was operated to swing the bag body in the extract liquid to promote extraction. However, when the material to be extracted is coffee powder, the upper end of the extraction bag is opened,
From this point on, hot water was added to brew coffee. For example, Japanese Utility Model Application Publication No. 57-162166 describes that a hanging string is attached to the extraction bag, the extraction bag is suspended by the hanging string, and hot water is poured into the extraction bag. In this case, the extraction operator had to suspend the extraction bag with one hand, making it difficult to pour hot water.

In order to solve this problem, a support plate is provided on the periphery of the upper end of the extraction bag (Japanese Unexamined Patent Application No. 6446422, Japanese Utility Model Application No. 60-7617, Japanese Utility Model Application No. 60-7623).
and those with locking pieces on the side edges of the extraction bag (
Utility Model Application No. 123480/1983) is known. However, when extracting a material to be extracted inside a bag-like body, it is difficult to stably hold the bag-like body in an open state.

[Problem to be solved by the invention]

The present invention solves the above-mentioned problems of conventionally known bag-like extraction bags, and eliminates the need to open the bag during the operation of pouring extraction liquid into the material to be extracted stored in the bag. The purpose of this invention is to provide an extraction bag whose condition can be maintained stably.

[Means and actions to solve the problem]

The extraction bag of the present invention is made of a water-permeable sheet material, has front and back surfaces facing each other, and has an opening at the upper end; a locking member fixed to the bag body; a shape-retaining member fixed on at least one of the front and back surfaces of the bag body and holding the bag body in an open state when the upper end opening is opened; It is something to do.

Another extraction bag of the present invention includes a bag body made of a water permeable sheet material, having front and back surfaces facing each other, and having an opening at the upper end, and a locking member fixed to the bag body. and a material to be extracted contained in the bag body, and a material fixed on at least one of the front and rear surfaces of the bag body, and holding the bag-like body in an open state when the upper end opening is opened. and a shape-retaining member, characterized in that the upper end opening of the bag body is releasably sealed.

[Function/Example]

The extraction bag of the present invention includes a bag body, a locking member, and a shape-retaining member.

The bag body is made of a water permeable sheet material and has front and back surfaces facing each other, the locking member is fixed to any part of the bag body, and the shape retaining member is fixed to the bag body. It is fixed on at least one of the front and back surfaces of the main body, preferably on the upper half thereof, and is capable of stably holding the bag-like body in the open state when the upper end of the bag main body is opened. be.

FIG. 1 is an explanatory front view of the extraction bag of the present invention. In FIG. 1, the bag body 2 of the extraction bag 1 has a front part 3 and a rear part 4 facing each other, and the bottom edge and left and right side edges of each are glued together or It is continuous and forms a pouch-like body. Further, the upper end of the rear face part 4 protrudes further outward from the upper end of the front face part 3, and by grasping the upper end of this rear face part 4 and separating it from the upper end of the front face part 3, the upper end of the bag body 2 is connected. Can be opened easily. Of course, the upper ends of both the front and rear parts may be on the same level.

The bag body is made of water-permeable, permeable material. Examples of the water-permeable permeable material include paper, nonwoven fabric, or base material;
For example, it may be a composite of a mesh or the like and a nonwoven fabric for diaphragm.

In FIG. 1, a shape-retaining member 5 is attached to the upper half of the front surface 3 of the bag body 2. There are no particular limitations on the dimensions, shape, etc. of this shape-retaining member 5, but the thickness, dimensions, shape, and material should be suitable for maintaining the bag body in its open state when the upper edge of the bag body is opened. It is desirable to have
Therefore, the shape-retaining member has a width of 4 mm on at least one side of the bag body.
It is preferable to cover 0% to 80% or more of the material, and once the desired bending or curved shape has been imparted to the material, the material can maintain the shape, such as a material with a thickness of 100 μm or more. , paper, plastic sheet,
It is preferably made of a sheet-like material made of a material such as a nonwoven fabric, a woven fabric, or a knitted fabric. In order to easily open the top end of the bag body and maintain the opening shape,
Opening creases may be provided at one or more predetermined positions on the upper half of the bag body and the shape-retaining member.

In addition, the shape-retaining member may be arranged and fixed on the rear surface of the bag body or on both front and rear surfaces, but at least its adhesive surface is waterproof, and the shape-retaining member is attached to the bag body. It is important that the shape-retaining material does not separate from the bag body due to the permeation of the extract. In order to form such a waterproof adhesive surface, at least the adhesive surface of the shape-retaining member is made of a layer of waterproof material, such as a hydrophobic resin (polyethylene, polypropylene resin, etc.), and this is applied to the bag body. It may be heat-sealed to the adhesive surface, or a waterproof adhesive (for example, a hydrophobic adhesive mainly composed of epoxy resin, modified polyolefin resin, etc.) may be used between the adhesive surface of the bag body and the shape-retaining member. A layer may be formed.

In the extraction bag of the present invention, the locking member is fixed to the bag main body, and there are no particular limitations on its size, shape, arrangement position, etc., whether it is fixed to the bag main body and fixed to the container during the extraction operation. .

For example, it may be as shown in FIG. In FIG. 2, a locking member 6 is stuck and fixed on the rear surface 4 of the bag main body 2 of the extraction bag 1.

In FIG. 2, the locking member 3 consists of a locking piece 8 held by a shape-retaining member 7.

That is, the shape-retaining member 7 is adhered and fixed to the top half of the bag body 2 and/or the upper half of both sides, and the locking piece 8 is supported by the shape-retaining member 7. ing. The locking piece 8 may be formed by a part of the sheet forming the shape retaining member 7. That is, as shown in FIG. 2, a locking piece 8 is attached to a sheet forming the shape retaining member 7
Make a cut in the shape of , as shown in Figure 3,
The locking piece 8 may be pulled up from the shape-retaining member 7 and connected to the shape-retaining member 7 through the continuous portion 9 . A locking recess 10 is formed in the locking piece 8 .

However, in the extraction bag of the present invention, the locking piece may be one piece, or may be formed separately from the shape-retaining member,
One end of the locking piece may be adhesively connected to the shape retaining member.

In the extraction bag of the present invention, at least the attachment surface of the locking member supporting the locking piece is waterproof, and the extraction liquid that has passed through the bag body permeates into this attachment surface. Therefore, it is preferable that the locking member does not separate from the bag body.

The waterproof adhering surface portion of the shape-retaining member supporting such a locking piece can be formed in the same manner as the shape-retaining member on the front surface portion described above.

In the extraction bag of the present invention, a scale mark is displayed on one or both sides of the bag body, so that the amount of filling of the material to be extracted or the amount of hot water, etc. added can be easily controlled. Good too.

In the extraction bag 1 shown in FIG. 4 and FIG.
A locking piece 8 is formed at the left end portion in the figure.

There are no restrictions on the shape and dimensions of the locking piece used in the present invention,
In addition to the shape shown in FIGS. 2 and 4, for example, as shown in FIG. 6, the locking recess 10 of the locking piece 8 is formed in contact with the shape retaining member 7. You can leave it there.

To perform an extraction operation using the extraction bag of the present invention as shown in FIGS. For example, the bag body 2 is locked to the top edge of the cup, the top opening of the bag body 2 is opened, a desired amount of the desired material to be extracted, such as coffee powder, is put into the bag body, and boiling water is poured into the bag body from above. All you have to do is extract the required amount of coffee.

The extraction bag of the present invention may be one in which the material to be extracted is filled in the bag body in advance, and the upper end opening is releasably sealed. To perform an extraction operation using such an extraction bag, before or after pulling out the locking piece of the locking member, or while pulling it out, open the upper edge of the bag body, and then perform the same extraction operation as above. All you have to do is perform the operation.

In order to releasably seal the upper edge of the bag body filled with the material to be extracted, for example, the bag body is formed of a double-layer composite water-permeable sheet, and the inner layer is formed of fine denier fibers. The outer layer may be formed of thick denier fibers having a denier two to three times that of the fine denier fibers forming the inner layer, and the inner surface of the bag body may be lightly heat-sealed.

By doing so, it is possible to prevent the material to be extracted from spilling out of the bag body during handling, transportation, and storage of the extraction bag of the present invention.

In the extraction bag of the present invention, the bag body has a rectangular bag shape, and when the upper end is opened, the lower edge of the bag body curves inward to form an inverted W-shape, and the left and right lower ends of the bag protrude downward. Therefore, the extract that has passed through the bag body mainly flows down from the lower left and right ends, improving the overflow efficiency and draining water well. In order to facilitate the formation of such an inverted W-shaped lower edge, an inverted W-shaped forming fold may be provided at the intermediate portion of this lower edge.

In the extraction bag of the present invention, since the upper end of the bag body is open during the extraction operation, it is easy to perform a stirring operation on the material to be extracted inside the bag to promote the extraction effect.

〔Effect of the invention〕

The extraction bag of the present invention can stably hold the extraction bag in the open state when opening the upper edge and performing an extraction operation by pouring boiling water or the like onto the material to be extracted inside the bag. Therefore, the extraction operation can be carried out easily, quickly and efficiently, and is extremely useful particularly for applications such as coffee extraction.

[Brief explanation of drawings]

FIG. 1 and FIG. 2 are front and rear views showing the configuration of one embodiment of the extraction bag of the present invention, respectively,
FIG. 3 is a front perspective view showing the opening state of the extraction bag shown in FIGS. 1 and 2 when in use, and FIGS. 4 and 5 respectively show other embodiments of the extraction bag of the present invention. FIG. 6 is an explanatory diagram showing an example of the shape of a locking piece used in the present invention. DESCRIPTION OF SYMBOLS 1... Extraction bag, 2... Bag body, 3... Front part, 4... Rear part, 5.7... Shape retaining member, 6... Locking member, 8... Locking piece, 9.
... Continuous part, 10... Locking recess. Figure 1 Figure 2 Figure 3 Figure 4 Figure 1 Figure 5 Figure 6 Circle

Claims (1)

[Claims] 1. A bag body made of a water-permeable and filterable sheet material, having front and rear surfaces facing each other, and having an opening at the upper end; a locking member fixed to the bag body; A shape-retaining member is fixed on at least one of the front and rear surfaces of the bag body and holds the bag body in an open state when the upper end opening is opened. and extraction bag. 2. A housing body made of a water-permeable and filterable sheet material and having front and rear surfaces facing each other and having an opening at the upper end; a locking member fixed to the housing body; and a locking member housed in the housing body. a shape-retaining member that is fixed on at least one surface of both the front and rear surfaces of the packaging body and that holds the bag-like body in an open state when the upper end opening is opened; An extraction bag comprising the following: an upper end opening of the bag body is releasably sealed.