JPH0380907A - Filter medium for refreshment liquid - Google Patents

Abstract

PURPOSE:To obtain a filter medium for refreshment liquids which can filter refreshment liquids to give a mellow taste thereto and which can be used repeatedly by mixing antimicrobial substances into a filter medium which is mixed with far infrared radiative substances. CONSTITUTION:A filter made of cloth 1 is composed of filter medium 7 which is woven of antimicrobial fibers 3, as warp, and far infrared fibers 5, as weft, and attached to a frame 9. The antimicrobial fiber 3 is made up of a core containing antimicrobial substances and a sleeve enclosing said core, which are formed into a core-sheath shape, while the far infrared radiative fiber 5 is made up of a core comprising polymers mixed with fine ceramic particles and a sheath of polyamide, which are formed into a core-sheath shape by melt spinning. As a result, antimicrobial actions of the antimicrobial fibers prevent the growth of bacteria due to heat insulating effects caused by the far infrared radiative fibers during storage of filter made of cloth, so that a filter medium for refreshment liquids which can be easily stored and are free from bad smells can be obtained.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a filter medium for filtering liquids for consumption such as coffee, sake, soy sauce, etc.

[Prior Art] Recently, far-infrared rays have been attracting attention as having the effect of softening the taste of foods and drinks.

Therefore, there is one example of applying far infrared rays to drip coffee, as described in Japanese Utility Model Application Publication No. 189129/1983. This publication describes a disposable paper filter for coffee with ceramic fine particles that emit far infrared rays attached to its surface.

The reason why such a paper filter makes coffee taste mellow is not clear, but it is presumed that during coffee extraction, the heating effect of far infrared rays evenly heats the coffee beans and gives them good activity. .

On the other hand, cloth drip filters are used for brewing coffee at coffee shops and the like, and are also popular among coffee lovers.

Therefore, the applicant (Friend) attempted to apply this technology to a cloth filter for drip use, but discovered the following problems [Problems to be solved by the invention] Since the cloth filter also uses consistency, After use, they are stored by soaking them in cold water to prevent them from acquiring strange odors or breeding bacteria.The temperature of this cold water is approximately 17°C.
It is known that temperatures above 330@C are inappropriate for storage. In addition, in coffee shops, etc., coffee is extracted one after another, so the coffee may simply be washed with water and not stored in cold water during business hours.

However, since the far infrared rays emitted by the filter are easily absorbed by water, the temperature of the cold water may rise. This also applies to filters that have been exposed to the outside air after only being washed with water, and there is a possibility that the filter will be maintained at a temperature that makes it easy for bacteria to propagate.

As a result, strange odors and the like are more likely to remain than those that were not originally provided with a far-infrared emitting function. For this reason, there was a problem that the number of times it could be used repeatedly was limited.Furthermore, due to repeated use, the far-infrared emitting material attached to the surface would peel off and become mixed into the filtered liquid. The purpose of the present invention is to solve the problem of a filter medium for liquids for drinking and drinking and to provide a far-infrared emitting filter medium suitable for repeated use.

4. Standing Area [Means for Solving the Problems] In the filtering material for drinking liquids of the present invention, which is made of a filtering material mixed with a substance that emits far infrared rays, the filtering material for drinking liquids further comprises: It is characterized by containing antibacterial substances.

[Function] The filter material of the present invention uses a filter material mixed with a substance that emits far infrared rays, so when filtering a liquid for drinking or drinking, for example, it gives a heating effect to coffee beans, giving the filtrate a mellow taste. Make it. Furthermore, since the filter material also contains an antibacterial substance, it is possible to prevent the proliferation of various bacteria that may be promoted by the thermal effect of far infrared rays when storing the filter material.

[Example] Next 1: An example in which the present invention is applied to a cloth filter for coffee extraction will be described with reference to the drawings.

Cloth filter 11 of the embodiment As shown in FIG. 1, a filter medium 7 in which antibacterial fibers 3 are used as warp threads and far-infrared radiation emitting fibers 5 are used as weft threads is attached to a frame 9.

As the antibacterial fiber 3 (as described in JP-A No. 59-133235, a core-sheath type fiber consisting of a core containing an antibacterial substance and a sheath covering it) can be used. explain.

First, type A zeolite (0,94Na20-A(!0
A silver-A type zeolite in which the Na ions of 3.1.92S i, 02.xH2O) are exchanged with Ag ions is prepared.

The molten polymer flow of polyamide as a fiber component is divided into two parts, one for the sheath component and the other for the core component, and after injecting silver-A type zeolite powder into the polymer flow of the sheath component, the two are merged. The composite is spun into a core-sheath shape and drawn. Thus, the second
As shown in the figure, antibacterial fibers 3 having a core-sheath cross section can be obtained from two antibacterial polyamides 11 and a polyamide 13 to which no antibacterial properties have been imparted.

Also, as far infrared emitting fiber 5, 1. JP-A-63-9
Those described in No. 2720 can be used. An example will be explained.

γ-Alumina (γ-AQ203)3 with an average particle size of 0.6μ
Mixed polymer 15 made by kneading 0 parts by weight and 30 parts by weight of polyethylene wax into a polyamide polymer is used as a core,
Further, by melt-spinning polyamide 17 to form a sheath, a far-infrared emitting fiber 5 having a core-sheath-like cross section can be obtained as shown in FIG.

Next, coffee extraction using the cloth filter 1 will be described.

Extraction of coffee (by the well-known drip method as shown in Fig. 4 above).
While brewing coffee, it emits far-infrared rays reflecting the heat of the hot water poured from Yagan 2o.

The coffee beans 22 (top) are also given heat from the fabric filter 1, that is, from the outside. Therefore, as shown in the figure, the outer peripheral portion, which is exposed to the outside air and has a poor heat retention effect, is also kept at a good temperature. As a result, The unevenness of the coffee beans becomes good, and a mellow coffee 24 is extracted.

After tasting coffee 24 extracted in this way, 7 out of 10 people agreed that the taste was mellower.

After that, if this cloth filter 1 is washed with water and stored as it is at room temperature, the same effect as described in JP-A-59-133235 can be expected, and the antibacterial action of the antibacterial fiber 3 suppresses the proliferation of bacteria. This prevents foul odors from adhering. That is, the propagation of germs due to the heat retention effect of the far infrared radiation w1 fibers 5 during storage of the cloth filter, which was previously expected, is suppressed, and storage becomes easier. It is also extremely hygienic as it does not allow bacteria to grow.

When I sampled coffee extracted using a cloth filter that had been stored and used for two weeks, I did not notice any unusual odor.It is possible to use the cloth filter 1, which makes the taste of coffee mellow, over and over again. I have to.

In addition, in Example 1, an example in which antibacterial fibers 3 and far-infrared emitting fibers 5 were interwoven as warp and weft yarns was explained, but for example, as shown in the modification example 1 in FIG. 5, a mixed polymer that emits far-infrared rays Antibacterial fiber 3 with far infrared radiation function, which is made by spinning antibacterial polyamide 11 around the outer periphery of fiber 15 to form a sheath.
0 may be used to form a filter medium. Since a cloth filter can be formed from a single fiber, it can be easily applied to various weaving methods, expanding the variety of cloth filters.

In addition, it is also possible to use a cloth that is interwoven or interknitted using a spun yarn obtained by blending short fibers of antibacterial fibers 3 and/or far infrared emitting fibers 5.

Further, in both the embodiment and the above-mentioned modification, since the antibacterial polyamide 11 is placed around the outer periphery of the fibers so as to be in direct contact with the outside air, there is an effect that germs in the air are less likely to adhere to the filter.

In addition, as other modified examples, for example (ヱ γ-alumina,
Silver-A type zeolite and polyamide powder may be mixed and melt-spun.

Further 1: In addition to cloth, far-infrared emitting materials such as γ-
A filter medium may be formed by further adhering an antibacterial substance to a filter paper containing alumina and silver-A type zeolite powder.

Alternatively, strips of antibacterial fibers and strips of far-infrared fibers may be incorporated into paper.

In addition, filter media such as dangerous soy sauce are used repeatedly, so
Of course, it may be applied to these. In this case as well, it is similar to coffee that the thermal effect acts on the fermented mash to produce mellow-tasting soy sauce.Also, when storing this filter medium, the generation of various bacteria can be prevented. The same is true for this.In particular, since it is used to filter high-energy materials such as mash, the heating effect of far infrared rays makes it easy for bacteria to grow.With the present invention, 1'L This makes it possible to easily produce mellow and delicious soy sauce, etc., and it also has the effect of making it easier to store the filter media used for filtration, and allowing a sufficient number of times to be used repeatedly. .

Although one embodiment of the present invention has been described above, the present invention is not limited to such an embodiment or modification.
For example, it is possible to implement the present invention in various ways without departing from the gist of the present invention, such as by using various substances other than those shown in the Examples as the far-infrared emitting substance and using it as a filter material. Of course.

As explained above, according to the present invention, it is possible to filter liquids for drinking and drinking to give them a mellow taste through the action of far infrared rays, and the filter material can be easily stored for repeated use. , it is now possible to easily provide mellow edible liquids.

[Brief explanation of drawings]

Figure 1 is a schematic perspective view and partially enlarged view of the fabric filter 1 of the example. Figure 2 is a cross section of antibacterial fibers. Figure 3 is a cross section of far-infrared emitting fibers. Figure 4 is a diagram of coffee extraction. Figure 5 is a cross-sectional view of a modified example of a fiber that has both far-infrared radiation function and antibacterial function. 1... Cloth filter 3... Antibacterial fiber 5... Far infrared emitting fiber

Claims (1)

[Claims] 1. A filtering material for liquids for drinking and drinking comprising a filtering material mixed with a substance that emits far infrared rays, characterized in that the filtering material is further mixed with an antibacterial substance.