CN106937827B

CN106937827B - Filter bag

Info

Publication number: CN106937827B
Application number: CN201710036206.3A
Authority: CN
Inventors: 邓蕊娜
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-01-12
Filing date: 2017-01-17
Publication date: 2020-03-13
Anticipated expiration: 2037-01-17
Also published as: CN207285893U; TWM542431U; CN106937827A

Abstract

The invention relates to the technical field of beverage brewing devices, in particular to a filter bag, which comprises a first water permeable area, a second water permeable area and a sealing part which are sequentially connected; one end of the second water permeable area is connected with the first water permeable area, and the water permeability of the second water permeable area is greater than that of the first water permeable area; the closing part is connected with the other end of the second water permeable area. Through the difference of the water permeability between the first water permeable area and the second water permeable area, the manufacturer can control the position from which the liquid flows out; then, the closing part is connected with the other end of the second water permeable area, that is, the second water permeable area with larger water permeability is closer to the closing part, so that the liquid can fully and uniformly flow through the brewing body (such as coffee powder), and the extraction liquid is concentrated and flows out of the filter bag from the second water permeable area to maintain the extraction concentration of the extraction liquid. When the extract is coffee, the flavor of the coffee can be further maintained.

Description

Filter bag

Technical Field

The invention relates to the technical field of beverage brewing devices, in particular to a filter bag.

Background

Nowadays, coffee is a favorite beverage for most people, and as the demand of people for diet gradually increases, the quality and convenience of coffee are the key points of increasing importance. A common method for brewing coffee includes placing bag-shaped filter paper in a filter cup by means of paper trickling filtration, filling coffee powder in the bag-shaped filter paper, so as to directly pour the coffee powder with hot water, and after the water passes through the coffee powder, the coffee (extract) extracted by the water flows out of the bag-shaped filter paper, so as to pour the coffee.

In order to make drinkers more convenient to enjoy instant coffee, the market provides a filter-hanging type coffee, a filter bag is formed by a water-permeable sheet, coffee powder is filled in the filter bag, two sides of the filter bag are provided with hanging structures, the hanging structures can be directly hung on the cup edge of a cup body, when a user infuses, hot water is directly poured into the filter bag, and then coffee is extracted.

Whether the hot water has the uniform coffee powder for making a shower is one of the main reasons for affecting the flavor of coffee. However, no matter the conventional bag-shaped filter paper or the filter bag of filter-hanging coffee (hereinafter referred to as filter bag), the liquid may flow out from any place of the filter bag during brewing, so some hot water may not sufficiently pass through the coffee powder and flow out from the filter bag, resulting in different extraction concentrations of coffee (extract liquid) flowing out from different areas of the filter bag. The uneven concentration of the extract further affects the flavor of the coffee.

Disclosure of Invention

The present invention aims to solve the problem of uneven extraction concentration caused by uneven brewing of conventional bag-shaped filter paper or filter bag.

In order to solve the above problems, the present invention provides a filter bag comprising a first water permeable area, a second water permeable area and a closing part which are connected in sequence; one end of the second water permeable area is connected with the first water permeable area, and the water permeability of the second water permeable area is greater than that of the first water permeable area; the closing part is connected with the other end of the second water permeable area. That is, the second water permeable area is closer to the closing portion than the first water permeable area.

The filter bag is connected with a supporting component used for arranging the filter bag on the cup body.

Furthermore, the filter bag is formed by sequentially overlapping a plurality of fiber sheets, and the water permeability of the first water permeable area and the second water permeable area is determined by the fiber density formed by sequentially overlapping the fiber sheets.

Further, the fiber density of said first water permeable region is greater than the fiber density of said second water permeable region; the thickness of the first water permeable area is greater than the thickness of the second water permeable area.

Further, the fiber sheet comprises at least one non-woven fabric layer and at least one paper layer.

Further, the number of paper layers in the first water permeable area is larger than that in the second water permeable area.

Further, the filter bag further comprises an opening part which is positioned at one end opposite to the closed part.

Further, the filter bag further comprises a hand tear line for closing the opening portion.

Further, the filter bag further comprises a third permeable area arranged at a position adjacent to the opening part or the hand tearing line, the first permeable area is connected with the third permeable area and the second permeable area, and the water permeability of the third permeable area is less than that of the first permeable area.

Further, the support assembly comprises two Jiong-shaped support parts, and the inner sides of the two support parts are respectively connected to the outer surfaces of the two sides of the filter bag.

Through the technical scheme, the filter bag disclosed by the invention at least can achieve the following beneficial effects: firstly, through the difference of the water permeability between the first water permeable area and the second water permeable area, the manufacturer can control the position from which the liquid flows out; then, the closing part is connected with the other end of the second water permeable area, that is, the second water permeable area with larger water permeability is closer to the closing part, so that the liquid can fully and uniformly flow through the brewing body (such as coffee powder), and the extraction liquid is concentrated and flows out of the filter bag from the second water permeable area to maintain the extraction concentration of the extraction liquid. When the extract is coffee, the flavor of the coffee can be further maintained.

Drawings

FIG. 1 is a schematic view of a filter bag according to a first embodiment of the present invention.

FIG. 2 is a schematic view of the filter bag shown in FIG. 1.

FIG. 3 is a schematic view of the filter bag shown in FIG. 1.

FIG. 4 is a schematic view of another embodiment of the support assembly shown in FIG. 2.

FIG. 5 is a schematic view of a filter bag according to a second embodiment of the present invention.

In the figure, the position of the upper end of the main shaft,

1 or 1a, a filter bag; 10. a fibrous sheet; 101. a non-woven fabric layer; 102. a paper layer; 11 or 11a, an opening; 12 or 12a, a closure; 13. tearing the thread by hand; 14 or 14a, a first water permeable zone; 15 or 15a, a second water permeable zone; 16. a third water permeable zone; 2 or 2a, a support member; 21. a support portion; 9. a cup body; 91. a cup rim; 92. a cup bottom.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some preferred embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "center", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the invention and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "coupled" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

"plurality" means two or more unless otherwise specified.

In order to make the technical content of the present invention more comprehensible, a preferred embodiment is described below.

First, the filter bag of the present invention includes a filter bag for hanging coffee or a general bag filter paper, and the first embodiment and the second embodiment will be described below.

Fig. 1 is a schematic view of a filter bag according to a first embodiment of the present invention, and fig. 2 is a schematic view of a usage state of the filter bag shown in fig. 1, please refer to fig. 1 and fig. 2 at the same time. The present invention provides a filter bag 1. the filter bag 1 of the present embodiment is exemplified by a filter bag 1 for hanging coffee, and the filter bag 1 can be disposed on a cup body 9 through a support member 2. Specifically, the support members 2 are connected to the outer surfaces of both sides of the filter bag 1, so that the filter bag 1 can be hung on the cup rim 91 of the cup body 9 to brew the brewing body in the filter bag 1, wherein the brewing body includes, but is not limited to, coffee powder, tea leaves, etc., and coffee is used as the brewing body in the following description.

In detail, the filter bag 1 of the present embodiment has a bag shape, one end of which is an opening 11, and the other end of which is a sealing portion 12, that is, the opening 11 is located at the end opposite to the sealing portion 12, and the infusion body is placed in the filter bag 1. Generally, the brewing body can be placed in the filter bag 1 and sealed, and preferably, the filter bag 1 of the present embodiment further includes a hand tearing line 13, which can be a plurality of holes linearly arranged on the filter bag 1, and is shown by the dotted line in fig. 1 for the user to tear off. When a user wants to brew coffee powder in the filter bag 1, the hand tearing line 13 is torn off, and an opening 11 is formed at the hand tearing line 13, as shown in fig. 2. The filter bag 1 is then hung on the cup body 9 by the support assembly 2, with the closure 12 now adjacent the bottom 92 of the cup body 9. Of course, in other embodiments, the end opposite to the sealing portion 12 may not have the hand tearing line 13, and is directly the opening portion 11, and the brewing body is placed in the filter bag 1 from the opening portion 11 when brewing, which is not limited by the present invention.

In this embodiment, the filter bag 1 includes the first region of permeating water 14, the second region of permeating water 15 and the closing part 12 of once connecting, wherein, the first region of permeating water 14 is connected to the one end of the second region of permeating water 15, and the degree of permeating water of the second region of permeating water 15 is greater than the first region of permeating water 14, and the other end of the second region of permeating water 15 is connected to the closing part 12, that is, the second region of permeating water 15 that the degree of permeating water is big is closer to the bottom of a cup 92 than the first region of permeating water 14.

The water permeability means the ability of water to pass through the filter bag from one side of the water permeable region to the other side, and the greater the water permeability of a certain place, the more easily water passes through the place and flows out, and the smaller the water permeability of a certain place, the less easily water flows out from the place.

Referring to FIG. 3, FIG. 3 is a schematic view of the filter bag shown in FIG. 1. In addition, the filter bag 1 of the present embodiment is formed by stacking a plurality of fiber sheets 10 in sequence, and the water permeability of the first water permeable area 14 and the second water permeable area 15 is determined by the fiber density formed by stacking the fiber sheets 10 in sequence. In other words, the fiber sheet material 10 in the first water permeable region 14 has a greater fiber density than the fiber sheet material 10 in the second water permeable region 15, so that the water permeability of the second water permeable region 15 is greater than the water permeability of the first water permeable region 14.

Preferably, the fiber sheet 10 of the present embodiment includes a non-woven fabric layer 101 and a paper layer 102, and the non-woven fabric layer 101 is disposed outside the paper layer 102, that is, the paper layer 102 is sandwiched between two non-woven fabric layers 101, and the non-woven fabric layer 101 and the paper layer 102 can be adhered to each other by an adhesion method, thereby forming the filter bag 1 of the present embodiment. Specifically, the nonwoven fabric layer 101 mainly contains elastic fibers such as polyolefin fibers and polyester fibers, and has water permeability. In addition, the paper layer 102 of the present embodiment has a plurality of holes for allowing liquid to pass through, and in the present embodiment, different fiber densities are generated by sequentially overlapping different numbers of paper layers 102 in different areas. For example, as shown in fig. 3, the fiber sheet 10 of the present embodiment includes three paper layers 102 with different lengths, and the number (for example, two) of the paper layers 102 located in the first water permeable area 14 is greater than the number (for example, one) of the paper layers 102 located in the second water permeable area 15 after being sequentially stacked, so that the thickness of the first water permeable area 14 is greater than the thickness of the second water permeable area 15, and the fiber density of the first water permeable area 14 is greater than the fiber density of the second water permeable area 15. The number of the non-woven fabric layer 101 and the paper layer 102 shown in fig. 3 is only for illustrative purposes, and the present invention is not limited to the number.

In other embodiments, the paper layer 101 with different hole numbers or sizes may be adhered to different areas to form different water permeabilities, which is not limited in the present invention. For example, the number of holes or the shape of the paper layer 101 corresponding to the first permeable area 14 is small, and the number of holes or the shape of the paper layer 101 corresponding to the second permeable area 15 is large, so that the permeability of the second permeable area 15 is greater than that of the first permeable area 14.

Preferably, the filter bag 1 of the present embodiment further includes a third permeable area 16 disposed adjacent to the opening 11 or the hand tearing line 13, and the first permeable area 14 connects the third permeable area 16 and the second permeable area 15. With respect to the water permeability, the water permeability of the third water permeable zone 16 is less than the water permeability of the first water permeable zone 14. In other words, the water permeability is lower to higher in the order of the third water permeable region 16, the first water permeable region 14, and the second water permeable region 15, i.e., the water permeability is higher as approaching the closing portion 12.

As mentioned above, the water permeability of different regions is determined by the fiber density of the fiber sheet 10, for example, different numbers of paper layers 102 are sequentially stacked, and the stacked thickness is thicker, the fiber density is higher, and the water permeability is lower, so the thickness of the third water permeable region 16 is greater than the thickness of the first water permeable region 14, and the thickness of the first water permeable region 14 is greater than the thickness of the second water permeable region 15.

Referring to fig. 2, the support assembly 2 of the present embodiment is a hanging structure, and includes two support portions 21 shaped like Jiong, wherein the inner sides of the two support portions 21 are respectively connected to the outer surfaces of the two sides of the filter bag 1, preferably, the support portions 21 are connected to the outer side of the third water permeable area 16, and the support portions 21 can be attached to the third water permeable area 16 of the filter bag 1 by edible adhesive. The Jiong-shaped support 21 can hang the filter bag 1 on the cup rim 91 of the cup body 9, so that the user can directly brew the brewing substance (coffee powder) in the filter bag 1. It should be noted that the present invention is technically characterized in that the first and second water

permeable regions

14 and 15 of the filter bag 1 have different water permeabilities, so that the configuration of the support member 2 is not limited. In other embodiments, the supporting component 2a can also be a suspension structure of the ear-hanging type as shown in fig. 4, and fig. 4 is a schematic view of another embodiment of the supporting component shown in fig. 2. It is to be noted that the filter bag 1 shown in fig. 4 is of a different configuration than that shown in fig. 1 and 2 and is therefore designated by the same component numbers.

Referring to FIG. 2, when the filter bag 1 is placed in the cup body 9 through the support assembly 2, the second water-permeable area 15 with the highest water permeability is close to the cup bottom 92, and if a user pours a liquid (such as, but not limited to, water, milk, etc.) into the filter bag 1 through the opening 11, the liquid contacts the brewing body, and the brewing body and the liquid are filled in the second water-permeable area 15 and a part of the first water-permeable area 14. When the liquid contacts the brewing body, the liquid can extract the substances of the brewing body and form an extraction liquid, for example coffee (extraction liquid) with water, which extraction liquid flows out more of the second water-permeable zone 15, since the water permeability of the second water-permeable zone 15 is greater than the water permeability of the first water-permeable zone 14. That is, the poured liquid can flow through the brewing body sufficiently and uniformly, and after the substances in the brewing body are sufficiently extracted, the extract liquid is collected in the second water-permeable area 15 and flows out. In this way, the concentration of the extract, for example coffee, is maintained, thus preserving the coffee flavor.

Moreover, when the user pours more liquid into the filter bag 1, the water pressure in the filter bag 1 is higher, and the liquid in the first water permeable area 14 can still contact with the brewing body and then flow out, so the extraction liquid still has a certain extraction concentration. The first permeable area 14 has a certain permeability (only less than the second permeable area 15), and this design can avoid the problem of flavor change caused by too long contact time between the brewing body and the liquid.

In general, when the liquid in the filter bag 1 is larger, the overall water pressure is higher, so that more extract can be dissolved from the brewing body, most of the extract flows out of the second water-permeable area 15 to the cup body 9, and a small part of the extract flows out of the first water-permeable area 14 to the cup body 9. When the liquid in the filter bag 1 is less, the liquid can slowly flow through the brewing body of the first water permeable area 14 and then flow through the brewing body of the second water permeable area 15, and the extract liquid flows out of the second water permeable area 15 to the cup body 9.

As mentioned above, the third water permeable region 16 is connected to the connecting portion 12, and the third water permeable region 16 has a small water permeability, so that when the liquid is poured into the filter bag 1, the liquid is not easy to flow out from the third water permeable region 16, in other words, the liquid is not easy to pass through the edible binding agent, thereby preventing the plasticizer and other substances which are not recommended to be eaten from being dissolved out.

FIG. 5 is a schematic view of a filter bag according to a second embodiment of the present invention, please refer to FIG. 5. The filter bag 1a of the present invention may be a bag-shaped filter paper and may be disposed on the cup body through a support member such as a filter cup. Of course, the filter bag 1a of the present embodiment also includes an opening 11a, a closing portion 12a, a first water permeable area 14a, and a second water permeable area 15 a. One end of the second water permeable area 15a is connected with the first water permeable area 14a, and the water permeability of the second water permeable area 15a is greater than that of the first water permeable area 14 a. The closing portion 12a is connected to the other end of the second water permeable section 15 a. Therefore, the extraction liquid can be controlled to flow out from the second water permeable area 15a, and the extraction concentration of the extraction liquid flowing out from different areas can be controlled, and when the extraction liquid is coffee, the flavor of the coffee can be maintained. For the related technical contents of different water permeability of the first water permeable area 14a and the second water permeable area 15a, reference may be made to the first embodiment, which is not repeated herein.

In summary, the filter bag provided by the present invention has at least the following advantages: firstly, through the difference of the water permeability between the first water permeable area and the second water permeable area, the manufacturer can control the position from which the liquid flows out; then, the closing part is connected with the other end of the second water permeable area, that is, the second water permeable area with larger water permeability is closer to the closing part, so that the liquid can fully and uniformly flow through the brewing body (such as coffee powder), and the extraction liquid is concentrated and flows out of the filter bag from the second water permeable area to maintain the extraction concentration of the extraction liquid. When the extract is coffee, the flavor of the coffee can be further maintained.

This embodiment is only a preferred embodiment of the present invention, and not detailed to describe all possible combinations of variations for avoiding redundancy. However, it should be understood by those skilled in the art that the above modules or components are not necessarily required. And other more detailed conventional modules or components may be included to practice the invention. Each module or component may be omitted or modified as desired, and no other module or component may necessarily exist between any two modules.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A filter bag is characterized by comprising a first permeable area, a second permeable area and a closed part which are connected in sequence;

one end of the second water permeable area is connected with the first water permeable area, and the water permeability of the second water permeable area is greater than that of the first water permeable area;

the closing part is connected with the other end of the second water permeable area;

the filter bag also comprises a third water permeable area, the first water permeable area is connected with the third water permeable area and the second water permeable area, and the water permeability of the third water permeable area is less than that of the first water permeable area;

the support assembly comprises two Jiong-shaped support parts, and the inner sides of the two support parts are respectively connected with the outer surfaces of the two sides of the filter bag.

2. The filter bag of claim 1, wherein a support assembly is attached to the filter bag for positioning the filter bag on the cup.

3. The filter bag of claim 1, wherein the filter bag is formed by sequentially stacking a plurality of fiber sheets, and the density of the fibers formed by sequentially stacking the fiber sheets determines the permeability of the first and second permeable regions.

4. The filter bag of claim 3, wherein the first water permeable region has a fiber density greater than the fiber density of the second water permeable region; the thickness of the first water permeable area is greater than the thickness of the second water permeable area.

5. The filter bag according to claim 3 or 4, wherein the fibrous sheet comprises at least one layer of non-woven fabric and at least one layer of paper.

6. The filter bag of claim 5, wherein the number of paper layers located in the first water permeable zone is greater than the number of paper layers located in the second water permeable zone.

7. The filter bag of claim 1, further comprising an opening at an end opposite the closure.

8. The filter bag according to claim 7, further comprising a hand tear line for closing the opening portion.

9. The filter bag of claim 8, wherein the third water permeable region is disposed adjacent to the opening or the hand tear line.