JPH11113751A - Disposal filter assembly for tea or coffee - Google Patents

Abstract

PROBLEM TO BE SOLVED: To extend the extracting time of a disposal filter for tea or coffee to a necessary degree. SOLUTION: The disposal filter assembly for tea or coffee 1A is composed of an inner bag 2 made of a water permeable sheet material, a matter to be extracted 6 such as coffee powder, tea leaves, etc., housed in the bag 2, a sealding bag 3A filled with the bag 2 and made of a non-permeable sheet material and a supporting means 4 for holding the bag 2 and the bag 3A after unsealed over a coffee cup. The upper and lower side of the bag 3A are respectively sealed by first and second joining parts 41 and 42. At a third joining part 43 constituting the second joining part 42, joined parts 40A mutually joined by non-permeable sheet material and non-joined parts 19A are alternately arranged in the direction of the width of the bag 3A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a disposable filter assembly suitable for use in brewing coffee or tea.

[0002]

2. Description of the Related Art A disposable coffee filter disclosed in Japanese Utility Model Publication No. 300423 is composed of a bag-shaped filter main body and a relatively high-rigidity annular supporting member, and the opening edge of the main body has an annular shape. It is fixed to the inner peripheral surface of the member.

In this coffee filter, a bag-shaped main body containing coffee powder and tea leaves can be held over a cup or the like by placing an annular member on the opening edge of a coffee cup or teacup. When pouring hot water, there is no need to support the main body and the annular member by hand.

[0004]

In the above-mentioned known coffee filter, if the extraction speed of the filter is too high and the contact time between the extract such as coffee powder and hot water is too short,
Hot water must be poured slowly. This means that, for example, a pot for pouring hot water is kept for a long time, and it is preferable to eliminate such trouble as much as possible.

Therefore, an object of the present invention is to suppress the extraction speed which is too high in the above-mentioned known coffee filter.

[0006]

SUMMARY OF THE INVENTION In order to solve the above problems, an object of the present invention is to provide a bag-shaped filter body made of a water-permeable sheet material, and to connect the body with a cup such as a coffee cup. And a support means for allowing the filter to be held over the opening of the coffee filter.

In this assembly, the present invention is characterized in that the assembly includes the main body, an extract such as coffee or tea leaves put in the main body, and a hermetically sealed enclosure in which the main body is sealed. A bag, and the support means formed in the closed bag, wherein the main body has an openable top, a bottom opposed to the top, and a peripheral wall located between these two portions. And a required portion of the peripheral wall is fixed to the inner surface of the sealed bag. The sealing bag is made of an impermeable sheet material, and the top of the sealing bag is formed by joining at least the water-impermeable sheet materials overlapping near the top of the main body,
A first joint extending in the entire width direction of the closed bag is formed so as to be cuttable in the width direction below the first joint, and a bottom of the closed bag is closer than a bottom of the main body. Below, the water-impermeable sheet material is formed by overlapping and joining together, and has a second joining portion extending in the width direction, and the second joining portion is provided with the water-impermeable sheet at an upper portion thereof. A joining portion and a non-joining portion of the sheet materials are alternately arranged in the width direction, and a fourth joining portion extending entirely in the width direction at a lower portion, The third joining portion is formed so as to be cut in the width direction, and the support means is formed on an outer surface between the first and second joining portions of the sealed bag.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of a disposable coffee filter assembly according to the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows a filter 1 obtained by opening a disposable coffee filter assembly 1A described later.
Is a perspective view of the state set in the coffee cup 7. FIG. If hot water is poured into the filter 1 in the figure, coffee can be extracted.

The filter 1 comprises an inner bag 2, an outer bag 3, and an annular holder 4. In the inner bag 2, a required amount of coffee powder 6 is put. 7 is placed on the opening edge 8. Holder 4
Utilizes an inverted V-shaped notch 11 formed in the lower edge portion 9, a portion of the lower edge portion 9 in the circumferential direction is inside the cup 7, and the remaining portion is outside the cup 7. Thus, the cup opening edge 8 is sandwiched from inside and outside.

FIGS. 2 and 3 are a partially cutaway perspective view of the filter 1 and a sectional view taken along line III-III. Inner bag 2
Is a main body of the filter 1, and has a top opening 12;
It has a bottom portion 13 and a peripheral wall portion 14 located therebetween, and 100% pulp filter paper is folded and stacked at the bottom portion 13 and the overlapping filter papers are embossed at both side edges 16. It is integrated. Such inner bag 2
Has a substantially inverted trapezoidal planar shape.

The outer bag 3 is larger than the inner bag 2 and has a rectangular shape containing the inner bag 2 inside thereof.
And a bottom portion 23 and a peripheral wall portion 24 located therebetween. The outer bag 3 has two overlapping sheet materials except for the top opening 22 and the side edges 26 and the bottom 23.
It is formed by joining with. However, in the bottom portion 23, the joining is intermittent in the width direction of the outer bag 3, and a gap having a width of 0.2 to 5 mm between adjacent joining portions 40 is 1 to 20 places per 50 mm in the width direction. This gap forms a through hole 19 through which water can pass from inside to outside in the outer bag 3. The vertical dimension of the joining portion 40 is preferably in the range of 0.05 to 10 mm.

[0013] The holder 4 is of the kind disclosed in the above-mentioned Japanese Utility Model Publication No. 30000423.
3 is formed by stacking two rectangular or trapezoidal paper or plastic sheets having a higher rigidity than the sheet material used in 3 and bonding the side edges 17 by bonding, welding, embossing or the like.

The inner bag 2 and the outer bag 3 are respectively provided with top openings 12 and 22, bottom portions 13 and 23, and peripheral wall portions 14 and 24.
Are almost coincident with each other, and are joined to each other so as not to be substantially peeled off at a portion 28 near each opening edge. The part 28 is provided with at least two in the direction around the opening so that the inner and outer bags 2, 3 are integrally opened.
It is preferable that it is formed in places. The outer bag 3 and the holder 4 or the inner bag 2 and the outer bag 3 and the holder 4
Are bonded to each other so as not to be substantially separated. It is preferable that at least two portions 29 are formed around the annular holder 4 so that the inner bag 2 and the outer bag 3 are greatly opened when the holder 4 assumes an annular shape. FIG. 3 shows the holder 4
This is an example of a mode in which only the outer bag 3 is bonded to the outer bag.
Here, the fact that they are joined to each other so that they are not substantially separated means that they are joined to each other with at least a strength that does not hinder use of the filter 1. I have.

When the filter 1 constructed as described above is used in the mode shown in FIG. 1, the hot water poured into the inner bag 2 extracts coffee and flows out of the inner bag 2, and then the hot water is removed from the cup. The speed at which the liquid is dropped onto the outer bag 7 is regulated by the through holes 19 of the outer bag 3. Depending on the type of the water-permeable sheet material, the extraction speed of the inner bag 2 may be too high.
By selecting the diameter and the quantity of the powder, the dropping speed to the cup 7 can be suppressed, and the contact time between the poured hot water and the coffee powder 6 can be extended. The user of the outer bag 3 can increase the diameter of the through holes 19 or increase the number thereof according to his / her preference.

FIGS. 4 and 5 show a filter 1 shown in FIGS.
Filter assembly 1 according to the present invention for obtaining
5A is a plan view and FIG. 5B is a cross-sectional view taken along line VV of FIG. This assembly 1A is different from the filter 1 in that a seal bag 3A is provided outside the inner bag 2 instead of the outer bag 3. Also,
The reason why the closed bag 3A is different from the outer bag 3 is that the closed bag 3A has a first joint portion 41 and a second joint portion 42 extending in the width direction in each of the upper and lower portions, and the second joint portion 42 And a third joining portion 43 and a fourth joining portion 44 which are further divided into upper and lower portions.

As shown, the first joint 41 has an inner bag 2
The sheet material forming the closed bag 3A is located above the top opening 12 and the sheet material forming the sealed bag 3A is bonded to the sheet material, and the sheet material located below the opening 12 as shown in FIG. In some cases, the material and the sheet material forming the inner bag 2 are integrally joined.

At the third joining portion 43 of the second joining portion 42, joining portions 40A and non-joining portions 19A appear alternately in the width direction of the sealed bag 3A. Non-joining part 19A
It is preferable that the dimension in the width direction is in the range of 0.2 to 5 mm and the dimension in the vertical direction is in the range of about 2 to 10 mm. At the fourth joint portion 44 of the second joint portion 42, the entire width of the bag is joined. The vertical dimension of the fourth joint 44 is preferably in the range of about 0.2 to 10 mm.

The upper part of the coffee filter assembly 1A thus constructed is below the first joint 41 and above the part 28 where the inner bag 2 and the closed bag 3A are joined. , The outer bag 3A is cut in the width direction, for example, along the imaginary line 46 shown in the figure. The lower portion of the assembly 1A cuts the outer bag 3A in the width direction along the imaginary line 47 in the third joint portion 43, for example. When the sealed bag 3A is cut at the upper and lower sides in this manner, the filter 1 having the outer bag 3 shown in FIGS. Sealed bag 3
The upper part of A is the opening 22 of the outer bag 3, and the lower part is
Each of the non-joining portion 19A and the joining portion 40A serves as the through hole 19 and the joining portion 40 of the outer bag 3, and forms the bottom portion 23 of the outer bag 3 through which water can pass.

In the filter assembly 1A having such a configuration, the inner bag 2 may be formed of a water-permeable sheet material such as a nonwoven fabric, a woven fabric, or a plastic net, in addition to the filter paper. As the airtight bag 3A, a water-impermeable sheet material, more preferably a moisture-proof and water-impermeable sheet material, and still more preferably any one of these sheet materials having gas barrier properties is used. Such sheet materials include plastic sheets, paper, metal foil, and laminate sheets containing any of these. The annular member 4 may be formed of a sheet material such as a plastic sheet or paper having sufficient rigidity to hold the filter 1 over the cup 7, a laminate sheet thereof, or a molded product of plastic. For bonding the inner bag 2, the closed bag 3A, and the annular member 4, means such as bonding, welding, embossing or debossing between sheet materials can be used.

In the filter assembly 1A, the sealed bag 3
Unless A is opened, the coffee powder 6 in the inner bag 2 or the tea leaves or the like in place of the powder 6 do not lose their flavor due to moisture or oxidation. Moreover, the sealed bag 3
You can easily enjoy a cafe just by cutting the top and bottom of A and pouring hot water.

FIG. 6 is a drawing similar to FIG. 5 showing an example of the embodiment of the present invention, but only the main part of the assembly 1A is shown. In this assembly 1A, the top of the inner bag 2 is joined with the closed bag 3A at the first joint 41. When the sealed bag 3A is opened with the virtual line 46, the inner bag 2 and the sealed bag 3A are opened.
And open. The assembly 1A in which the opening 12 of the inner bag 2 is closed is different from that of FIG. 5, and the coffee powder 6 does not go out of the inner bag 2 even when the assembly 1A is turned upside down. In addition to such an embodiment, the opening 12 of the inner bag 2 may be closed between the first joint portion 41 of the sealed bag 3A and the joint portion 28 between the sealed bag 3A and the inner bag 2. At that time, the assembly 1A is opened so that the cutting line 46 comes below the closed portion.

FIG. 7 is a drawing similar to FIG. 1 showing another embodiment of the present invention. The illustrated filter 1 obtained by cutting the upper and lower parts of the assembly 1A is set in the cup 7 using the holder 33. A semi-cylindrical member 34 is joined to the outer surface of the outer bag 3 of the filter 1,
The arm 3 of the holder 33 is provided between the outer bag 3 and the member 34.
A through hole 37 for insertion extends in a direction around the outer bag 3.
The holder 33 has a Y-shape and has two arms 36. The outer bag 3 has two through holes 37 corresponding to each arm 36.
Are formed, but only one of them is shown in the figure. The holder 33 is placed on the opening edge of the cup 7 as shown.

In the filter assembly 1A in this case,
The support means for holding the inner bag 2, which is the main body of the filter, over the cup 7 includes a through hole 37 formed in the outer bag 3.
It is.

[0025]

The disposable coffee filter assembly according to the present invention, when viewed from the aspect of its use, has an inner bag made of a water-permeable sheet material and an outer bag made of a water-impermeable sheet material. It consists of a bag and the bottom of the outer bag,
Since a through hole that can suppress the dropping rate of the extract is formed,
Even when the inner bag extraction speed is too high, the contact time between the extract such as coffee powder and the hot water can be made sufficiently long. When the assembly is viewed in a mode before use, since the outer bag forms a moisture-proof closed bag, the coffee powder and the like in the assembly do not impair the flavor and have good storage stability. Therefore, according to the assembly of the present invention, savory coffee and tea can be easily enjoyed.

[Brief description of the drawings]

FIG. 1 is a perspective view of a filter assembly in use.

FIG. 2 is a partially cutaway perspective view of the filter assembly used in FIG.

FIG. 3 is a sectional view taken along line III-III of FIG. 2;

FIG. 4 is a plan view of the filter assembly.

FIG. 5 is a sectional view taken along line VV of FIG. 4;

FIG. 6 is an essential part cross-sectional view of a filter assembly showing an example of the embodiment;

FIG. 7 is a perspective view of a filter assembly in a use state showing another example of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Coffee filter 1A Filter assembly 2 Filter body (inner bag) 3 Outer bag 4 Support means (annular member) 6 Extract 12,22 Top opening 13,23 Bottom 14,24 Peripheral wall 19A Non-joining part 37 Support means ( (Aperture) 40A Joining part 41 First joining part 42 Second joining part 43 Third joining part 44 Fourth joining part

Claims (3)

[Claims] 1. A disposable coffee filter assembly having a bag-shaped filter body made of a water-permeable sheet material and supporting means for allowing the body to be held over an opening of a cup such as a coffee cup. The assembly comprises: the main body, an extract such as coffee or tea leaves placed in the main body, a sealed bag in which the main body is sealed, and the support formed in the sealed bag. Wherein the main body has a top portion that can be opened, a bottom portion facing the top portion, and a peripheral wall portion located between these two portions, and a required portion of the peripheral wall portion is The sealed bag is fixed to the inner surface of the sealed bag, and the sealed bag is made of a water-impermeable sheet material, and the top of the sealed bag is joined to at least the water-impermeable sheet materials overlapping near the top of the main body. Formed by And a first extending in the entire width direction of the closed bag.
The sealing bag is formed so as to be cuttable in the width direction below the first joining portion, and the bottom of the sealed bag overlaps the water-impermeable sheet material below the bottom of the main body. And has a second joining portion extending in the width direction, wherein the second joining portion is
At the upper portion, a third joining portion in which joining portions and non-joining portions of the water-impermeable sheet materials are alternately arranged in the width direction, and at a lower portion, a fourth joining portion extending entirely in the width direction. The third joining portion is formed so as to be cut in the width direction, and the supporting means is formed on an outer surface between the first and second joining portions of the closed bag. The above assembly, characterized in that: 2. The assembly according to claim 1, wherein the water-impermeable sheet material is any one of a plastic sheet, paper, metal foil, and a laminate sheet using any of these. 3. The support means is an annular member,
3. A part of the member and a part of an outer surface of the sealing bag located inside the member are joined to each other.
An assembly according to claim 1.