JP2000354713A - Sheet material for filter and wound filter using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently filter impurities mixed in various liquids such as cooking oil by mixing tourmaline powder halving specific particle size by a specific ratio in a sheet body made of cellulose fibers having specific density to fix it therein and subjecting the tourmaline powder-containing sheet body to embossing to impart a specific crepe rate. SOLUTION: A sheet material for a filter is obtained by homogeneously mixing the tourmaline powder having 5-50 μm particle size by 1-30 wt.% in a sheet body made of cellulose fibers having 0.1-0.5 g/cm3 density to fix it therein and subjecting the tourmaline powder-containing sheet body to embossing to impart 6-40% crepe rate. The obtained sheet material is used in an environment being a mild condition of 30 deg.C or higher advantageous for making good use of the mineral characteristics of the tourmaline. Meanwhile, a cylindrical wound filter 3 is formed by winding the base paper 1 of the obtained sheet material around the outer periphery of a paper tube core material 2 and then cutting the base paper-wound core material at a prescribed length in the axial direction of the core material 2. When this wound filter is used, the liquid itself such as used cooking oil can be activated to improve purification efficiency.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a filter for filtering impurities in a fluid, and more particularly to a novel filter which can be used for various liquids such as edible oils and the effectiveness thereof can be remarkably expected. An object of the present invention is to provide a filter sheet material having a structure and a roll-up filter using the same.

[0002]

2. Description of the Related Art The rebound, etc., where only rapid and dramatic economic recovery has been sought after while overlooking the development of social infrastructure, causes distortions in various parts of the social structure, making it difficult to settle and correct it. Are entering an era of serious challenges. Laws and regulations have finally been set to address one of these issues, a global problem such as the waste of resources, the spread and penetration of various types of pollution, which have resulted from the industrial structure of mass production and mass consumption. At the same time, not only companies but also the people gradually strengthen their awareness,
Some people are beginning to try to solve problems through voluntary actions.

In order to stop air pollution, not only will automobile emission regulations be strengthened, but also tax incentives for the development and use of vehicles equipped with clean engines, improvement of incinerator structures, and suppression and restriction of use in ordinary households. In order to make effective use of resources, for example, households return and collect food trays, companies recycle and use them, and develop natural-friendly paper trays. Practical application is progressing, and recycling measures in various fields, such as composting of garbage from food-related companies such as food factories, composting of garbage from homes, and practical use of related products, are This is just one example of movement. Against this background, reflections on the handling of edible oils have recently become extremely widespread in various areas, especially in food factories and restaurants that handle large quantities of fried foods, as well as in Japanese and Western food specialty stores and side dish stores that handle ingredients such as tempura, tonkatsu, and croquettes. Strong and reusable to the extent that taste and texture are not affected,
Along with a desire to increase management efficiency by reducing the amount of waste oil treatment, there is a demand for prevention of water pollution due to careless dumping of waste oil.

[0004] The production of edible oil in Japan is about 1.2 million tons per year, and the intake of fried foods is increasing due to the health food boom, and the demand for chilled foods is increasing due to more efficient living. For reasons such as, it is expected that consumption of edible oil will increase more and more in the future,
The edible oils used in these fields remain under the control of the user who is the user, and if the function of the edible oil is reduced, the taste and texture of the ingredients will be greatly affected. Therefore, under the current situation where there is no effective and economical renewal means, the waste oil has to be finally disposed of as waste oil for a fee, and in addition to replenishment of new cooking oil, it is economical to treat waste oil. It is a fact that a heavy burden has been imposed.

[0005] Deterioration of fats and oils in edible oils is caused by the tendency of peroxidation to progress due to heating and use by a fryer.
Since it is considered that the peroxidation tendency is further promoted by carbonization of the fried scum due to the mixing of the food pieces and that the promotion of the oxidation tendency by mixing the water from the food into the fats and oils, At the same time, try to use them as much as possible, and at the same time, carefully monitor the appropriate setting of the mixing ratio of the type of oil used, changes in oil components according to the number of cooked products, flavor, color, turbidity, etc. It is necessary to perform appropriate management such as replenishing the appropriate amount each time or purifying the entire amount.Therefore, specialty stores and other stores that try to maximize the taste characteristics of the ingredients and maintain the fragrance and texture of the edible oil at the best A specialized factory repeatedly cooks a predetermined amount of fried food with new cooking oil, and after using the product for about three times with an acid value exceeding 2.5 to 3, the entire amount is turned into waste oil for disposal. In order to suppress oxidation tendency as much as possible, such as by removing only fried scum through cotton cloth or wire mesh each time use is made, or if priority is given to economic efficiency and effective use of resources, Try to increase the number of uses even once, or regenerate the acid value to 2 or less by using a very expensive purification device already provided, and then add one or two more times There are some places where they use it.

In order to cope with such a situation, a edible oil purifying apparatus or a technique related to the edible oil has been proposed so far, for example, the invention disclosed in Japanese Patent Application Laid-Open No. H8-107830, entitled "Purification of used high-temperature oil". Apparatus "and the invention" filter case and filter "disclosed in JP-A-9-70505 or JP-A-9-70505
Japanese Patent No. 220415 discloses the invention "filter" and the like, which are mainly aimed at removing residues such as fine fried scum in used edible oil which cannot be filtered by conventional cotton cloth or wire mesh. In this method, waste oil is forcibly pumped from one cut end to the other cut end of a roll-shaped filter wound in multiple layers, and the residue in the oil is filtered in the process. Specifically, it is no different from the conventional elements for automobile engine oil, and if it is barely made of adsorbent such as activated clay or activated carbon, it will be decolorized and deodorized to reduce the color of the browned oil. It is only to make it close to the original one and to remove as much of the fried odor as possible. In order to reduce the acid value of waste oils and fats, the equipment itself is complicated and difficult to handle, and many expensive items are not suitable for individual purchase. Purification and re-use by paying a considerably high processing fee.

[0007] In view of the above situation, the present invention particularly leads to the recovery of the properties of edible oil, enables the use of valuable edible oil for a little longer time, and reduces the economic burden on the user. Developed and pursued research on a method of purifying used oil quickly, which has led to effective use of resources and pollution control measures, as well as intake of edible oil as a health food. After accumulating mistakes and experimental trials, I finally came here and finally processed foods that contain not only used edible oils but also used oils and fats such as used engine oils, cutting machine oils, meat, and marine products. We have completed a filter sheet material with a novel structure that is effective in purifying various fluids such as broth of products or gases and air containing off-flavors, and the prospect of its practical use has been obtained. Ri, in the following be gradually showing the details of its construction.

[0008]

The gist of the filter sheet material included in the present invention is basically as follows. That is, tourmaline powder having a particle size of 5 to 50 .mu.m is uniformly mixed and fixed in a ratio of about 1 to 30% by weight in a sheet made of cellulose fiber having a density of about 0.1 to 0.5 g / cm @ 3, and crepe is fixed. It is a sheet material for a filter which is obtained by subjecting unevenness processing to a rate of about 6 to 40%.

The above-described filter having a basic structure according to the present invention, as a more specific structure, has a particle size of 5 to 0.1 g / cm 3 in a sheet made of cellulose fiber. ~ 50μm tourmaline powder is uniformly mixed and fixed at a ratio of up to about 1 to 30% by weight, and crepe ratio is about 6 to 40%. 3
The present invention provides a filter sheet material having a configuration that is regulated for a filter used in an environment having a temperature range of about 0 ° C. or higher.

[0010] The filter having the basic structure of the present invention includes a sheet made of cellulose fibers having a fiber length of about 0.1 to 25 mm and having a density of about 0.1 to 0.5 g / cm3. Using a paper-strengthening material such as CMC, a tourmaline powder having a particle size of 5 to 50 μm is increased to about 1 to 30% by weight, and an activated clay having a particle size of about 20 to 30 μm is added to the tourmaline powder in a total amount of about 30%. % Of the filter sheet material which is mixed and fixed at a ratio not exceeding the range of up to about 30%, and has a structure in which the crepe ratio is about 6 to 40%.

Similarly, a cellulose fiber having a fiber length of about 0.1 to 25 mm is made into a paper, and a density of 0.1 to 0.5 g /
Using a paper-strengthening material such as CMC, a tourmaline powder having a particle size of
A functional impurity such as activated clay and / or activated carbon having a particle size of about 20 to 30 μm in a range not exceeding about 30% by weight in total with the tourmaline powder. In addition, a filter sheet material that has a configuration in which a concavo-convex processing is performed with a crepe ratio of about 6 to 40% while being mixed and fixed in the above is also included.

[0012] Further, the most promising application is that a cellulose fiber having a fiber length of about 0.1 to 25 mm is made into a sheet having a density of about 0.15 to 0.3 g / cm3, and CMC or the like is used. Use paper strengthening material, particle size 20
A ratio of about 3 to 5% by weight of tourmaline powder having a center of about 40 μm and activated clay of about 20 to 30 μm having a particle size of about 20% by weight in total with the tourmaline powder. In addition to fixing and fixing, a crepe ratio of about 25 to 30% is applied to the surface, and used for regenerating used oil such as used edible oil in a heating region of approximately 100 to 200 ° C. A sheet material for a filter is also included.

As the cellulose fiber, wood pulp is most desirable. As in the case of papermaking having a porous sheet-like structure in which cellulose fibers having various fiber lengths are mixed, such as ordinary tissue paper and paper for sanitary goods, a paper machine is used. An appropriate range of fiber length (if it is used as a filter sheet material for recycling used edible oil) so that a porous sheet-like structure that can be manufactured by a papermaking method and is effective according to the use of the filter is realized. Has a fiber length of 0.1 to
From cellulose fiber of about 25 mm)
About 0.5 g / cm @ 3 (10 to 150 g / m @ 2), especially 0.15 to 0.3 g /
cm3 (13-35 g / m2) to form a sheet-like structure to reinforce its mechanical strength or to adjust the amount of wood pulp used.
Synthetic fibers can be mixed and manufactured at a ratio according to the purpose.

[0014] Tourmaline powder has recently attracted attention due to its properties, (Na, Ca) (Al, Fe, Li,
"Magnetolite" is a cyclic silicate mineral having a complex chemical composition such as Mg) 3 Al6 (BO3) 3 Si6 O18 (OH) 4.
And powdered from 0.5 to 1 depending on the application.
Although it is possible to use a particle having a particle size in the range of about 50 μm, a particle having a particle size in the range of about 5 to 50 μm is considered in consideration of the fixing rate and the effect on the cutting machine when paper is made, the action as a mineral property, and the like. Should be used, especially for the purification of used edible oil, to prevent separation into oil as much as possible,
In order to obtain the expected effects, it is most desirable to use tourmaline powder having a particle size of about 20 to 30 μm.

The mixing and fixing rate of tourmaline powder to the cellulose fibers can be said to be substantially up to the range of about 70 to 80% by weight depending on the application. Considering the practical value, such as the possibility of cutting, the mixing / fixing rate, the degree to which the filter effect can be obtained and the price of the tournament due to the trade-off between tourmaline prices, etc., it is in the range of about 30% by weight. It is desirable to keep it at least 3-5% by weight, especially for used edible oil.
It has been confirmed that a sufficient tourmaline effect can be obtained before and after. Therefore, the filter sheet material used as a filter for used edible oil is limited to about 10% by weight at the maximum. To
For the purpose of fulfilling other purification functions, already known activated clay is used alone, or activated clay and activated carbon and other functional impurities are combined in an appropriate ratio, and the total amount including tourmaline powder is about 30% by weight. It is also possible to use it in combination with or to mix it in as it calms down. If it is a filter sheet material to be used as a filter for used edible oil, tourmaline powder: activated clay, tourmaline powder: active The ratio is controlled so that the combination ratio of functional impurities such as clay and / or activated carbon is approximately 1: (20 to 30).

The means for fixing the functional impurities such as tourmaline powder and / or activated carbon to the cellulose fiber may be based on the incorporation of a conventionally used resin binder which has been used in the past, or the filtration residue in the papermaking process. As a residual between the cellulose fibers, it may be by means of fixing, but in order to stabilize the fixing rate,
A paper making method in which a paper strength enhancer such as anionic CMC, polyamide epicle, hydrin, etc. is mixed and used in a ratio of about 0.1 to 2% by weight to a cationic tourmaline powder. It is extremely effective to do so.

[0017]

[Related Invention] The present invention relates to a filter sheet material of the present invention having the above-described structure. The present invention includes a wound filter formed by using the filter sheet material. That is, a crepe ratio of 6 to 40 is applied to a sheet body in which at least tourmaline powder is homogeneously mixed and fixed at a ratio of about 1 to 30% by weight.
% Of a sheet material for a filter having a predetermined width, which has been subjected to a concavo-convex processing of about%, is wound around an outer surface of a core material having a predetermined length to form a roll-up filter. When the used edible oil at a temperature of about 150 ° C. is pumped at a pressure of about 1 kg / cm 2, the weight of the stacking density that can pass through the tip of the other end at a flow rate of about 35-40 cc / cm 2 per minute. The gist is a configuration in which a wound structure is formed in a wound structure.
It is a wound filter using the filter sheet material of the present invention.

The amount of outflow when pressure is fed from one end of the winding filter and flows out from the other end of the winding filter greatly depends on the viscosity of the fluid to be purified.
Pumping used cooking oil at a temperature of about 1 ° C at about 1 kg / cm2 (However, immediately after starting pumping, since there is resistance until it permeates the whole, the pumping step at that stage is excluded from the conditions, and This is based on the lamination density at which the flow rate from the tip of the other end when flowing at a stable stage is about 35 to 40 cc / cm 2 per minute.

The wound filter of the present invention can be made of a rod or tube made of a suitable material having pressure resistance and heat resistance, such as paper, wood, metal, or plastic, as the core material. In addition, the cross-sectional shape is not particularly limited, such as a circle, an ellipse, a polygon, and a star.
It can be appropriately selected and adopted depending on the object to be purified and the purpose of purification. Hereinafter, a typical specific example of a wound filter effective for purifying used edible oil is taken up, and the filter sheet material included in the present invention and the structure of the wound filter using the same are further improved. Be clear.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The filter sheet material of the present invention, particularly the filter sheet material used for purifying used edible oil, was prepared by dispersing wood pulp having a fiber length of about 0.1 to 25 mm in water. About 1% by weight of CMC (paper strength enhancer: anion) is mixed into the pulp-mixed liquid, and a tourmaline powder (cation) whose particle size is in the range of 20 to 30 μm is adjusted to a particle size distribution of 80% or more. About 4 to 5% by weight in the total weight of the finished sheet material, activated clay ("Galeon Earth V2" manufactured by Mizusawa Chemical Industry Co., Ltd.)
)) Is added so as to have a ratio of about 15% by weight, and occupying about 20% by weight in total, and the whole is sufficiently stirred to form a homogeneous mixture, thereby forming a mixed liquid. After forming, these mixed liquids were diluted with a large amount of water, and the conventional paper machine was used as it was,
It is wound up as a long sheet material for a long sheet material with a thickness of about 0.25 to 0.35 mm by a manufacturing method substantially similar to the process for manufacturing wide sheet base paper having a porous structure such as tissue paper base paper. Can be

The rolled sheet material base paper 1 is
After being wound again around the outer circumference of the paper core 2 having a diameter of 3.8 cm at a length of about 45 to 50 m, the winding thickness is regulated so as to form a laminated structure in which the winding thickness is about 35 mm. 2. The wound filter 3 of the present invention having a structure as shown in the perspective view of FIG. 1, which is cut to have a length of 160 mm in the axial direction of 2 and has a cylindrical shape with a diameter of about 108 mm and a length of 160 mm. It is formed in.

[0022]

The winding filter 3 is sealed in a pressure vessel 4 having an inner end of about 110 mm as shown in FIG. 15 which has been preliminarily filtered through a wire mesh or the like, which has been pressure-fed from the upper side of the pressure vessel 4 and fixed.
A used edible oil of about 0 to 180 ° C. is applied at a rate of approximately 35 to 40 cc / cm per minute from the lower end of the roll-shaped filter 3.
2 At the outflow ratio of around, the sheet material is passed from the top to the bottom through the lamination gap of the sheet material and between the fibers of the sheet material, and in the process, impurities such as fine fried scum mixed into the used edible oil are filtered and Decolorization and deodorization are promoted by the action of activated clay.

Further, in this filtration process, the used edible oil is brought into contact with the activated clay in contact with the tourmaline powder which has been introduced in a substantially uniform state at a predetermined ratio, and the oil temperature is about 150 ° C. It will be heated to a considerably higher temperature, and the inherent mineral properties of the heated tourmaline will affect the oil in contact. That is, far-infrared rays emitted by the heated tourmaline, the electromagnetic wave as its effective light, cuts the double bond contained in the unsaturated fatty acid oil,
Since the oxygen bond is not formed in the binding portion to make the production of lipid peroxide difficult, the acid value AV (see the generation of acid by free fatty acids to determine the properties suitable for edible oil) (Acid-alkali titration method) is lowered, and the fats and oils are improved. This is thought to be due to the progress of the addition reaction of the unsaturated double bond with OH and the progress of hydrogen abstraction from the hydrogen site covalently bonded to the carbon site.

The electromagnetic wave action of tourmaline can be measured by the thiobarbitur method (TBA), which is an index of the degree of deterioration, or the like.
The effectiveness is also confirmed by the measurement result of peroxide value (POV) for directly inspecting fats and oils. The experimental data in FIG. 3 shows the values after the tourmaline powder was directly introduced into the salad oil and sesame oil with advanced fat and oil deterioration while maintaining the temperature at 30 ° C. in a thermostat, and after 5 days. In the acid value AV, the sesame oil slightly increased in the chromaticity judgment, but in the TBA test relating to the oil / fat deterioration, harmful components such as carbonyl compounds were detected only in traces, and the oil / fat The iodine released when potassium iodide is added is measured in milliequivalents (m
In the POV test evaluated in terms of eq / kg), both samples showed results as being sound and having high purity, and it was proved that the tourmaline in a heated state clearly improved the fats and oils.

In addition, the edible oil after filtration whose properties as fats and oils have been improved as described above is shown in the micrographs of FIGS. 4 to 7 (all are inverted microscopes IMT-2, 47, manufactured by Olympus Corporation).
0 times. As shown in the food analysis report prepared by the Yamagata Prefecture Industrial Technology Center, at least 140
Pre-filtered used edible oil (FIG. 4) containing fried scum of about μm and other impurities (FIG. 4) is filtered through a 120-mesh wire mesh to leave fried scum of about 50 μm ( 5), and half of the used edible oil was filtered through a roll-up filter formed using the filter sheet material of the present invention into which tourmaline powder having a particle size of 15 μm or less was introduced. Use filtered edible oil (Fig. 6, Sample A) and leave the remaining half at 20
It was filtered through a wound filter formed using the filter sheet material of the present invention in which tourmaline powder of which particle size was controlled to a particle size in the range of ｍ40 μm was obtained to obtain a filtered edible oil (FIG. 7, sample B). As a result, even after filtration, many contaminants of 5 to 6 μm or less which were not detected in the pre-filtered used edible oil (FIG. 5) were reflected in the edible oil of the sample A. The result that the specimen B is not recognized is obtained.

From the experimental data, the sample A was filtered
In the case of a filter sheet material into which tourmaline powder having a particle size of 5 μm or less is incorporated, it has been found that the tourmaline fine powder is released from the cellulose fibers during the filtration process. The filter sheet material of the present invention to be used for the filter needs to have a tourmaline powder having a particle size of about 20 μm or more to be mixed and fixed in the cellulose fiber. And the balance between the total amount mixed and the total contact area, cutting workability,
It has been concluded from a practical judgment, such as the degree of homogenous mixing, that it is most desirable to limit the maximum value to about 40 μm.

[0027]

As described above, the filter sheet material of the present invention and the wound filter using the same are made of a component sheet material obtained by mixing and fixing tourmaline powder having a predetermined particle size to cellulose fibers. Used to remove the impurities in edible oils and other fluids while decolorizing and deodorizing, as in the case of conventional cellulose fiber mixed with active clay only or coated, and used to remove the deteriorated and discolored color. Unlike those that only try to remove some of the scent of fried foods remaining in the fluid as much as possible while at the same time recovering it, the deterioration of the liquid, especially the peroxidation tendency of used cooking oil, etc. The effect of activating the fluid itself by the mineral properties of tourmaline acting on a certain fluid will be obtained at the same time, and the purification effect will be extremely excellent. It has characteristics.

The apparatus itself is almost the same as the above-described conventional apparatus using a filter, even when compared with the conventional apparatus using a deoxidation method using an alkaline substance which is known as a means for activating a deteriorated liquid. A simple structure with a sufficient degree of configuration is sufficient, it is extremely compact and relatively inexpensive, and the handling operability is also very simple, and there is also a disadvantage that only a professional or a person with similar knowledge can handle it. Therefore, even if you have used fluids such as used edible oil that need purification, you have to rely on specialist patrols or have to turn to waste disposal for a fee. Has been processed,
It also has the advantageous feature that it can be reused as an activated fluid or that it can be treated as a fluid that does not lead to pollution, such as food factories and restaurants handling a large amount of fried foods, Store specializing in Japanese and Western foods that handles ingredients such as tempura, tonkatsu, croquettes, etc.
Not only prepared food stores, but also metalworkers who operate various machining machines and consume large amounts of cutting oil, machine factories that use other machine oils, car repair shops, etc. It can greatly reduce the cost and improve the management efficiency, and it will also be very useful for pollution control.

In particular, the filter sheet material having a configuration representative of the present invention and the roll-up filter using the same, which have been described in the embodiments, purify and regenerate used edible oil which is used according to the specified configuration. Has been confirmed to be extremely effective, and promotes the effective use of edible oil, which is one of the precious resources, as well as reducing the absolute consumption of edible oil, which can also be a pollution factor. Because of the connection, the effects provided by the present invention are enormous from a social point of view.

As described above, the filter sheet material of the present invention and the roll-up filter using the same are capable of achieving the intended purpose with a novel structure, and require purification and regeneration. Will be very effective for the effective use of edible oil, which is important as a cooking material for deep-fried foods, which is indispensable as a food material in Japan, especially from people involved in those industries. Achieve a high reputation and be fully evaluated by people in fields that have fluids that require purification and regeneration other than edible oil, and as a result, reduce materials that can also be a source of pollution Is expected to be highly evaluated in terms of social contribution, and will be widely adopted and spread in various fields in the future.

[Brief description of the drawings]

The drawings illustrate embodiments that represent the invention and
It relates to the function and effect.

FIG. 1 is an overall perspective view of a roll-up filter using this filter sheet material.

FIG. 2 is a longitudinal sectional view of a main part of the wound filter in a use state.

FIG. 3 is experimental data showing the degree of improvement of a filtrate by the winding filter.

FIG. 4 is a photomicrograph of used edible oil taken with a 470 × inverted microscope.

FIG. 5 is a photomicrograph showing a state after the used edible oil has been applied to a pre-filter.

FIG. 6 is a photomicrograph showing a state in which a used edible oil applied to a pre-filter is filtered through a roll-up filter formed using a filter sheet material in which tourmaline powder having a particle size of 15 μm or less is incorporated. It is.

FIG. 7 shows a state after the used edible oil applied to the pre-filter is filtered by a roll-up filter formed using a filter sheet material into which tourmaline powder having a particle size of 20 to 40 μm or less is incorporated. It is a microscope picture.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base material for sheet material 2 Core material of paper core 3 Winding filter 4 Pressure vessel 41

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Isao Arise 96-3-6 Hakusan, Yamagata City Rabbit House Hakusan II3-E F-term (reference) 4D019 AA03 BA12 BA13 BB05 BC10 BC20 BD01 CA03

Claims (8)

[Claims] 1. A sheet made of cellulose fibers having a density of about 0.1 to 0.5 g / cm @ 3 has a particle size of 5 to 50 .mu.m.
A sheet material for a filter, which is obtained by uniformly mixing and fixing tourmaline powder in a ratio of about 1 to 30% by weight, and subjecting the crepe rate to an unevenness of about 6 to 40%. 2. A sheet made of cellulose fiber having a density of about 0.1 to 0.5 g / cm @ 3 has a particle size of 5 to 50 .mu.m.
Is uniformly mixed and fixed at a ratio of about 1 to 30% by weight, and is subjected to an unevenness process with a crepe ratio of about 6 to 40%. Only at 30 ° C., which is advantageous for utilizing the mineral properties of tourmaline. A filter sheet material characterized in that it is regulated for filters used in an environment where the temperature is at or above a high temperature range. 3. A sheet made of cellulose fibers having a fiber length of about 0.1 to 25 mm and having a density of about 0.1 to 0.5 g / cm @ 3 by using a paper strength enhancing material such as CMC.
The tourmaline powder having a particle size of 5 to 50 μm is up to about 1 to 30% by weight, and the activated clay having a particle size of about 20 to 30 μm is mixed with the tourmaline powder in a total amount not exceeding about 30% by weight. Mixed and fixed with
A filter sheet material characterized by being subjected to unevenness processing with a crepe ratio of about 6 to 40%. 4. Use of a paper-strengthening material such as CMC in a sheet made of cellulose fibers having a fiber length of about 0.1 to 25 mm and having a density of about 0.1 to 0.5 g / cm 3,
The amount of tourmaline powder having a particle size of 5 to 50 μm is up to about 1 to 30% by weight, and the amount of functional impurities such as activated clay and / or activated carbon having a particle size of about 20 to 30 μm is about 30% in total with the tourmaline powder. % And the crepe ratio is 6 to
A sheet material for a filter, characterized in that it has been subjected to a roughening process of about 40%. 5. A sheet made of cellulose fibers having a fiber length of about 0.1 to 25 mm and having a density of about 0.15 to 0.3 g / cm @ 3 by using a paper-strength enhancing material such as CMC to obtain a particle size of about 20 to 25 g / cm @ 3. A ratio of about 3 to 5% by weight of tourmaline powder having a center of about 40 μm and activated clay of about 20 to 30 μm having a particle size of about 20% by weight in total with the tourmaline powder. In addition to fixing and fixing, a crepe ratio of about 25 to 30% is applied to the surface, and used for regenerating used oil such as used edible oil in a heating region of approximately 100 to 200 ° C. A sheet material for a filter, comprising: 6. The filter sheet material according to claim 1, wherein the cellulose fibers are mainly made of wood pulp and mixed with synthetic fibers at an appropriate ratio. 7. The sheet body in a ratio regulated such that the combination ratio of tourmaline powder to activated clay, tourmaline powder to activated clay and / or functional impurities such as activated carbon is about 1: (20 to 30). 5. The sheet material for a filter according to claim 4, which is mainly used for recycling used edible oil. 8. A predetermined width in which at least a tourmaline powder is uniformly mixed and fixed in a proportion of up to about 1 to 30% by weight, and a crepe ratio of about 6 to 40% is applied to a fixed sheet body. When the filter sheet material is wound around the outer surface of the core material having a predetermined length to form a cylindrical filter, the cylindrical filter has one end on the one end side and a cut end of 15%.
When used cooking oil at a temperature of about 0 ° C. is pumped at a pressure of approximately 1 kg / cm 2, approximately 35 to 40 / min from the other end of the kiguchi.
The filter according to any one of claims 1 to 7, wherein the filter is wound and formed so as to have a double-wound structure having a stacking density capable of passing with an outflow amount of about cc / cm2. Roll-up filter using sheet material.