JPH04330908A - Filter paper for removing its characteristic odor and dissolved fine particles - Google Patents

Abstract

PURPOSE:To provide a filter paper for removing its characteristic odor and dissolved fine particles. CONSTITUTION:All the fibers of a filter paper body 1 are entangled with calcined zeolite powder 2 consisting of calcined and finely pulverized Kanumatsuchi (a volcanic ash soil) in the fine state by vacuum suction. Thereby the objective filter paper for removing its characteristic odor and dissolved fine particles is obtained.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of filter paper used for filtering beverages and the like.

0002

BACKGROUND OF THE INVENTION Filter paper is used for clarification such as removing scum, decolorizing, and deodorizing used tempura oil, milk coffee, sake, and other liquids. Filter papers mixed with activated carbon have also been provided to particularly increase their filtration effectiveness. However, fine particles of the filter paper itself are dissolved in the filtrate and brought into the filter paper, and even if it is slight, the odor of the paper has a subtle effect on the taste, and the result is that the clarification is incomplete. Become. Furthermore, filter paper mixed with activated carbon has a dark color that is not sensually acceptable. It has already been pointed out that in the above-mentioned clarification, the color and odor that the filter paper originally wants to retain are taken away, resulting in a change in taste. For example, black tea filtered through a net and black tea filtered through a filter paper bag will have a very slight difference in shade.

0003

Problems to be Solved by the Invention Among the above-mentioned circumstances, the present invention does not consider the damage caused by the filter paper or the change in color as a problem. To provide a filter paper that prevents fine particles of the filter paper itself from being dissolved in the filtrate and being brought in, and the odor of the paper quality having a subtle influence on the taste even if it is slight, and leaving imperfections even in clarification. It is something to do.

0004

[Means for Solving the Problems] In order to solve the above problems, the present invention constructs a filter paper in which zeolite powder 2 is entangled throughout the fibers of a filter paper body 1 to remove the odor and dissolved fine particles of the paper itself. It is something. As the zeolite powder 2, calcined powder of natural zeolite such as Oya stone, Kanuma soil, Shirasu soil, etc., or artificially synthesized zeolite can be considered. Possible means for entwining the zeolite powder 2 all over the fibers include a vacuum suction method and a spreading pressure method at the manufacturing stage.

[0005]

[Operation] The filter paper of the present invention was compared with a conventional filter paper in an experiment, and the following results were obtained. The product judgment was based on a sensitivity test conducted by five people.

(1) In the case of used tempura oil When fish tempura was fried and the slightly brownish cooking oil was filtered, there was a decolorization, deodorization, and filter paper odor.
Clarity Control filter paper Slight residual color Remaining odor Yes
80% Invention filter paper
Returns to colorless and transparent Oil odor only None
100%

(2) In the case of tea packs When used as a pack material for commercially available tea packs,
Color, aroma, filter paper odor
Clarity Control filter paper Slightly faded Lost Yes
80% Invention filter paper
Almost no fading No loss None
100%

(3) Meal coffee
in the case of
Color, aroma, filter paper odor, clarity, control filter paper
Change unknown Slight loss Yes Unknown Inventive filter paper
Unknown change Not lost None Unknown

(4) For sake Decolorization Meltiness Filter paper odor
Clarity control filter paper
Good Somewhat lost Yes 80% Inventive filter paper
Excellent Good
None 90%

0010
]

[Example] To explain the following example, fired zeolite powder 2, which is made by firing Kanuma soil and pulverizing it into a fine powder, is applied to the entire fibrous material of filter paper body 1 by vacuum suction to make it dense. filter paper to remove the odor and dissolved particles of the paper itself. With the above configuration, the calcined zeolite powder 2 is tightly entangled with fibers, and does not separate from the filter paper even when the filtrate passes through it, rather than the odor of the filter paper itself and dissolved fine particles that would be carried into the filtrate. It also works to attract and hold.

[0011]

Effects of the Invention As described above, the present invention is constructed by entwining the zeolite powder 2 throughout the fibers of the filter paper body 1, so that the filtrate that has passed through it has the filtration effect of the filter paper itself, and Pigments and odor components are effectively adsorbed by the porous zeolite powder 2, which has a high cation exchange ability.
Furthermore, the zeolite powder 2 also absorbs and retains the odor of the filter paper itself and dissolved fine particles that would otherwise be carried into the filtrate, resulting in extremely high clarity and, in the case of beverages, products with excellent taste and aroma. It is something that can be done.

[Brief explanation of the drawing]

[Fig. 1] Partially enlarged vertical cross-sectional side view of the filter paper of the present invention.

[Explanation of sign]

1 Filter paper body 2 Zeolite powder

Claims (3)

[Claims] 1. The odor of the paper itself, characterized in that zeolite powder 2 is entangled throughout the fibers of the filter paper body 1;
Filter paper to remove dissolved particles. 2. The filter paper according to claim 1, wherein the zeolite powder 2 is a calcined natural zeolite powder, which removes the odor and dissolved fine particles of the paper itself. 3. The filter paper according to claim 1, wherein the zeolite powder 2 is a synthetic zeolite powder, which removes the odor and dissolved fine particles of the paper itself.