JP2001299590A - Coffee filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coffee filter that removes residual chlorine and extracts tasty coffee. SOLUTION: The coffee filter which contains coffee powder and extracts coffee by dropping hot water poured from above into a cup underneath is made of a paper of natural cotton having air and water permeability as a main component mixed with active carbon and by heating and pressing it.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coffee filter for storing granular or powdered coffee for one person, placing the coffee on the edge of a cup, and pouring hot water from above to extract the coffee.

[0002]

2. Description of the Related Art In recent years, the number of people who love coffee has rapidly increased,
Packed coffee that can be easily drunk when desired is used.

[0003] In a commonly used pack, a granular or powdered coffee for one person is stored in a bag-like filter formed of a non-woven fabric, and the coffee is placed on a cup, and hot water is poured from above. Has been extracted.

[0004]

The city water supply is supplied to households after disinfecting water taken from rivers. Therefore, tap water contains residual chlorine, and this is considered to be one of the causes of "poor tap water".

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a coffee filter capable of extracting delicious coffee by removing residual chlorine.

[0006]

According to the first aspect of the present invention,
A coffee filter that contains granular or powdered coffee and drops hot water poured from above into a lower cup to extract coffee, and is mainly made of natural cotton having air permeability and water permeability, It is characterized by the fact that it is mixed with activated carbon to make paper, heated and pressed.

[0007]

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, a first embodiment of a coffee filter 11 includes a storage section 12, a pouring section 13, and a holding section 14, in which a powdery coffee 15 for one person is stored. In the second embodiment, in addition to the first embodiment, the upper opening of the housing portion 12 is further heat-sealed by a sealing member 16 formed of a nonwoven fabric having air permeability and water permeability. I have.

The coffee filter 11 is mainly composed of natural cotton having air permeability and water permeability. That is, cotton is composed of about 70% of linter pulp, about 10% of annual bamboo pulp, about 10% of Manila hemp, and about 5 to 10% of polyester. Pressed. Approximately 120 cc of hot water at about 95 ° C. is appropriately selected so as to pass through the coffee 15 in 1 minute 10 seconds to 20 seconds.

As the activated carbon, a fibrous activated carbon (Unitika Adol A-10, trade name of Unitika Ltd.) was used.
The properties of this fibrous activated carbon Unitika Adol A-10 are as follows:
The specific surface area is 1000 m ² / g, the pore diameter is 20 Åg, and the pore volume is 0.5 ml / g.

The housing 12 has a container shape with an open top. The pouring section 13 is provided in a tubular shape continuously above the accommodation section 12. The holding section 14 is placed on the edge of the cup 16 and is provided so as to protrude from the lower surface of the pouring section 13. This coffee filter 11 is stored in a bag in a state in which the powdered coffee 15 for one person is stored,
Stored dry.

Next, a test for detecting residual chlorine will be described (see FIGS. 2 to 5). The first to fifth embodiments were manufactured by changing the content of activated carbon, and at the same time, a commercially available coffee filter shown in FIG. 6 was tested as a comparative example.

That is, the first embodiment is activated carbon 0%, the second embodiment is activated carbon 2%, the third embodiment is activated carbon 5%, the fourth embodiment is activated carbon 10%, and the fifth embodiment is activated carbon 15%.

First, tap water and groundwater are quantified (120 c
c) The sample was collected in a transparent glass, and 3 drops of a solution of ortho-tolidine, a reagent for detecting residual chlorine, was dropped thereto. The result is shown in FIG. Tap water (A) turns yellow (large), but groundwater does not change. Next, three drops of the reagent were added to a fixed amount of tap water that passed through the comparative example (commercially available nonwoven fabric filter) and the first to fifth examples.

As a result, the water (C) permeating the comparative example (commercially available nonwoven fabric filter) is yellowing (large).
The water (B) permeated through the first embodiment had a slight yellowing, but none of those mixed with activated carbon changed. Therefore, as shown in FIGS. 3 and 4, two transparent containers are arranged side by side on a blank sheet of paper. The container on the right side of the figure contains the entire amount of water of (B) and (C). In the container on the left side of the figure, the yellowed tap water is poured to the same depth as that of (B) or (C) when viewed from above. In this case, the content (%) of the residual chlorine is inversely proportional to the water depth. As a result, the content of residual chlorine in each solution assuming that the content of residual chlorine in tap water is 100% is as shown in FIG.

As described above, the present invention comprises natural cotton having air permeability and water permeability as a main component, mixed with activated carbon to make paper, and heated and pressed to remove residual chlorine in tap water. The effect is that delicious coffee can be extracted.

[0017]

According to the first aspect of the present invention, there is provided a coffee filter for accommodating granular or powdered coffee and dropping hot water poured from above into a lower cup to extract the coffee. As the main component is natural cotton with water permeability, mixed with activated carbon to make paper, heated and pressed,
It is effective in removing residual chlorine in tap water and extracting delicious coffee.

[Brief description of the drawings]

FIG. 1 is a vertical sectional front view of a coffee filter.

FIG. 2 is a diagram showing a test result of detection of residual chlorine.

FIG. 3 is a diagram comparing the densities of the color changing liquids.

FIG. 4 is a diagram comparing the densities of the color changing liquids.

FIG. 5 is a diagram comparing the content of residual chlorine to various samples.

FIG. 6 is an external view of a comparative example (commercially available filter).

[Explanation of symbols]

 11 Coffee filter

Claims (1)

[Claims] 1. A coffee filter for accommodating granular or powdered coffee and dropping hot water poured from above into a lower cup to extract coffee, wherein natural cotton having air permeability and water permeability is provided. The main component of this is a coffee filter characterized by mixing activated carbon and making paper, and then heating and pressing.