JP2001190207A - Liquid-absorbing wick and thermal fumigation using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid-absorbing wick that can fumigate the thermal fumigation components for many hours and provide a method for thermal fumigation using the wick. SOLUTION: The liquid-absorbing wick 1 is partially soaked in the liquid so that the wick 1 may absorb the liquid, while the liquid-absorbing wick is heated at the other part whereby the liquid is thermally fumigated at the heated part. In this fumigation process, this liquidabsorbing wick 1 is used to carry out the thermal fumigation process.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an absorbent core for heating and evaporating a drug solution and the like and a heating and evaporating method using the same, and more particularly, to insecticide, fungicide, deodorant, aroma, sterilization, and the like. TECHNICAL FIELD The present invention relates to a liquid absorbent core for evaporating a chemical solution for a long time and a heat evaporation method using the same.

[0002]

2. Description of the Related Art Conventionally, a heat evaporation method of dipping a lower part of a liquid absorbent core into a liquid chemical such as an insecticide to absorb the liquid chemical and heating the upper part of the liquid absorbent core to evaporate the liquid chemical is well known. Have been. In such a heat evaporation method, it is necessary to dissolve or disperse the heat evaporation component in the chemical solution as much as possible in order to heat and evaporate the heat evaporation component in the chemical solution for a longer time.

[0003] However, if heating is continued for a long time with a chemical solution containing a high concentration of a component for heat evaporation, there is a problem that the amount of volatilization of the chemical solution decreases with time due to deterioration of the absorbent core and clogging. . In the case of insecticide for heat evaporation,
Since the chemical solution contains many other components such as fragrances and anti-clogging agents in addition to the insecticidal component, the problem that the amount of the insecticide component that can be dissolved or dispersed in the chemical solution must be reduced accordingly. there were.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a liquid absorbent core capable of heating and evaporating a heat evaporation component over a long period of time, and a heat evaporation method using the same.

[0005]

Means for Solving the Problems According to the present invention, there is provided a liquid-absorbing wick for immersing a part of the liquid-absorbing wick in the liquid to absorb the liquid, and the other part of the liquid-absorbing wick. Is used in a heat evaporation method for evaporating a liquid by heating the liquid, which contains a heat evaporation component.

[0006] Since the component for heat evaporation is contained in the absorbent core as described above, it is possible to stabilize the volatilization of the component even during the heat evaporation for a long time. The liquid absorbent core contains a component for heat evaporation.

Various components can be used as the heat evaporation component contained in the absorbent core depending on the purpose and application of the heat evaporation. For example, in the case of an insecticide purpose, in addition to the insecticide, fragrance, eye, etc. And a clogging inhibitor. As the anti-clogging agent, for example, 3,5-di-t-butyl-4-
Representative examples include hydroxytoluene (hereinafter, referred to as BHT) and / or 3-t-butyl-4-hydroxyanisole (hereinafter, referred to as BHA).

The present invention also provides a heat evaporation method in which a part of the liquid absorbent core is immersed in the liquid to absorb the liquid, and the other part of the liquid absorbent core is heated to evaporate the liquid. Is what you do. The liquid preferably contains the same or different heat evaporation component as the heat evaporation component contained in the absorbent core in order to enable heat evaporation for a long time, but the liquid itself contains the heat evaporation component. It does not necessarily have to be contained.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below. The liquid absorbent core according to this embodiment contains an effective amount of BHT and / or BHA as a heat evaporation component. As the liquid absorbent core, a liquid absorbent core conventionally used for the purpose of heating and evaporating a chemical solution can be used without any particular limitation, and examples thereof include felt, cotton, pulp, nonwoven fabric, asbestos, and inorganic molded products. Further, a porous core of a synthetic resin, a core obtained by solidifying a synthetic fiber bundle with a resin, or the like can be used. Further, a hollow absorbent core such as a capillary tube may be used. In this case, the component for heating and evaporating may be held in a hollow portion (for example, in addition to adhesion to an inner wall surface, a hollow portion may be formed in the wall surface). Etc.).

Specific examples of the above-mentioned inorganic molded product include those obtained by solidifying inorganic fibers such as porcelain, glass fiber and asbestos with a binder such as gypsum or bentonite, kaolin, activated clay, talc, diatomaceous earth, clay and the like. , Mineral powder such as perlite, gypsum, bentonite, alumina, silica, alumina silica, titanium, vitreous volcanic rock calcined powder, vitreous volcanic ash calcined powder alone or wood powder, charcoal powder,
Sizing agents such as dextrin, starch,
Those hardened with gum arabic, synthetic glue CMC and the like can be exemplified. A particularly preferred liquid absorbent core is 100 parts by weight of the mineral substance powder, 10 to 300 parts by weight of wood flour or a mixture of carbon powder and / or activated carbon up to an equal weight mixed with the wood flour, and a paste is further added. It is manufactured by blending until it becomes 5 to 25% by weight of the total liquid absorbent core, mixing these, adding water, kneading, extruding and drying.

The BHT or BHA may be preliminarily mixed with a liquid absorbent core molding material and molded integrally with the molded material, or may be impregnated into the molded liquid absorbent core. In the latter case, BHT or BHA is dissolved or dispersed in an appropriate solvent, and the solution is impregnated in the absorbent core under reduced pressure or normal pressure.

The BHT or BHA used is preferably in the form of a powder so that it is uniformly contained in the absorbent core. At this time, the particle size is not particularly limited, but is usually 10 to 1
It is appropriate to use a 50 mesh pass, preferably about 15 to 120 mesh pass.

It is preferable that BHT or BHA is contained in the liquid absorbent core in an amount of 2% by weight or more based on the weight of the liquid absorbent core. B
When the content of HT or BHA is less than 2% by weight,
The volatility of the active ingredient may not be improved. on the other hand,
The upper limit of the content is not particularly limited as long as the function as the liquid absorbent core is not impaired, but it is generally appropriate that the content be 20% by weight or less, preferably 18% by weight or less.

In addition to the BHT and BHA, a dye such as malachite green, sorbic acid and salts thereof, and a fungicide such as dehydroacetic acid, etc. can be added to the liquid absorbing core, if necessary. The liquid absorbing core used has a liquid absorbing rate of 0.1 to 40 hours, preferably 1 to 40 hours, more preferably 8 to 21 hours. This liquid absorption speed is 7 mm in diameter x 70 mm in length in a predetermined solvent at a liquid temperature of 25 ° C.
Is immersed to a depth of 15 mm from the lower part, and the time required for the liquid to reach the top of the core is measured.

The liquid absorbed by the absorbent core includes insecticidal liquids, sterilizing liquids, fungicides, deodorizing / deodorizing liquids, aromatic liquids, and the like. Among these, as the insecticidal component (active ingredient) contained in the insecticidal solution, any of various agents conventionally used for controlling insect pests such as flies, mosquitoes, mites, ants, cockroaches can be used, and for example, various pyrethroids Insecticides, carbamate insecticides, organophosphorus insecticides and the like are included. Specific examples thereof include the following.

.3-allyl-2-methylcyclopenta-
2-en-4-one-1-yl dl-cis / trans-chrysanthemate (generic name arrestrin; trade name pinamine; Sumitomo Chemical Co., Ltd., isomers of arrestrin; general name sbioarlesrin; trade name esviol ; Agrebo Japan Co., Ltd.) 3-Allyl-2-methylcyclopenta-2-ene-4
-On-1-yl d-cis / trans-chrysanthemate (trade name: Pinamine Forte; manufactured by Sumitomo Chemical Co., Ltd.) d-3-allyl-2-methylcyclopenta-2-en-4-one- 1-yl d-trans-chrysanthemate (trade name: Exulin; manufactured by Sumitomo Chemical Co., Ltd.) 3-Allyl-2-methylcyclopenta-2-ene-4
-On-1-yl d-trans-chrysanthemate (trade name: bioaresulin) N- (3,4,5,6-tetrahydrophthalimide)-
Methyl dl-cis / trans-chrysanthemate (general name: phthalthrine; trade name: neopinamine; manufactured by Sumitomo Chemical Co., Ltd.) 2-Methyl-4-oxo-3- (2-propynyl) cyclopent-2-enyl-chrysante Mart 5-benzyl-3-furylmethyl d-cis / trans-chrysanthemate (generic name resmethrin; trade name chryslon forte; manufactured by Sumitomo Chemical Co., Ltd.) 3-phenoxybenzyl 2,2-dimethyl-3-
(2 ′, 2′-dichloro) vinylcyclopropanecarboxylate (generic name: permethrin; trade name: Exmin;
Sumitomo Chemical Co., Ltd.) 3-Phenoxybenzyl d-cis / trans-chrysanthemate (generic name phenothrin; trade name Smithrin; Sumitomo Chemical Co., Ltd.) d-2-methyl-4-oxo-3- 2,3,5,6-tetrafluoro-propargylcyclopent-2-enyl d-cis / trans-chrysanthemate (generic name: d, d-T80-praletrin; trade name: ETOK; manufactured by Sumitomo Chemical Co., Ltd.) 4-methylbenzyl-3- (2'-chloro-3 ', 3', 3'-trifluoro-1-propenyl) -2,2-dimethylcyclopropanecarboxylate (generic name tefluthrin) 2,3,5 , 6-Tetrafluorobenzyl-3-
(2,2-dichlorovinyl) -2,2-dimethylcyclopropanecarboxylate (generic name transfluthrin) 5- (2-propargyl) -3-furylmethylchrysanthemate (generic name framethrin) α-cyano Phenoxybenzyl isopropyl-4-
Chlorophenyl acetate (generic name fenvalerate;
(Semicidin; manufactured by Sumitomo Chemical Co., Ltd.) (S) -α-cyano-3-phenoxybenzyl (1
R, cis) -3- (2,2-Dichlorovinyl) -2,2
-Dimethylcyclopropanecarboxylate (R, S) -α-cyano-3-phenoxybenzyl (1R, 1S) -cis / trans-3- (2,2-dichlorovinyl) -2,2-dimethylcyclo Propane carboxylate α-cyano-3-phenoxybenzyl d-cis / trans-chrysanthemate 1-ethynyl-2-methyl-2-pentenyl cis /
Trans-chrysanthemate 1-ethynyl-2-methyl-2-pentenyl dl-
Cis / trans-3- (2,2-dimethylvinyl) -2,
2-dimethyl-1-cyclopropanecarboxylate (generic name empentrin; trade name vaporthrin; manufactured by Sumitomo Chemical Co., Ltd.) 1-ethynyl-2-methyl-2-pentenyl 2,2
-Dimethyl-3- (2-methyl-1-propenyl) cyclopropane-1-carboxylate 1-ethynyl-2-methyl-2-pentenyl 2,
2,3,3-tetramethylcyclopropanecarboxylate 1-ethynyl-2-methyl-2-pentenyl 2,2
-Dimethyl-3- (2,2-dichlorovinyl) cyclopropyne-1-carboxylate [[(R, S) -α-cyano-3-phenoxybenzyl]-(R) -2- [2-chloro-4- (Trifluoromethyl) anilino] -3-methyl-butanoate (generic name fluvalinate) O, O-dimethyl O- (2,2-dichloro) vinyl phosphate o-isopropoxyphenyl methyl carbamate O, O- Dimethyl O- (3-methyl-4-nitrophenyl) thionophosphate O, O-diethyl O-2-isopropyl-4-methyl-pyrimidyl- (6) -thiophenosphate O, O-dimethyl S- (1,2-dicarbethoxyethyl) -dithiophenophosphate 3-allyl-2-methylcyclopent-2-ene-4
-On-1-yl 2,2,3,3-tetramethylcyclopropanecarboxylate (general name teraletrin) • [(pentafluorophenyl) -methyl] -1R, 3
R-3- (2,2-dichloroethynyl) -2,2-dimethyl-cyclopropanecarboxylate (generic name: fenfluthrin)

The insecticide includes various insect repellents. In addition to the insecticide, various additives such as an efficacy enhancer, a volatilization rate improver, a flame retardant, a deodorant, a fragrance and the like which are usually used can be optionally added to the mixture. Examples of the potency enhancer include piperonyl butoxide, N-propylisosome, MGK-264, sinepirin 222, sinepirin 500, Risen 384, IBTA, and S42.
1 etc., as a volatilization rate improver, phenethyl isothiocyanate, dimethyl mituxate, etc., as a flame retardant, tricresyl phosphate, chlorinated paraffin, etc., as a deodorant, lauryl methacrylate (LMA), etc. Examples of the fragrance include citral and citronellal.

The amount of the insecticide to be added is not particularly limited because it is appropriately determined according to the kind of the insecticide to be used, but is usually about 0.2 to 20% w / v in the insecticidal solution, preferably It may be contained at a concentration of about 0.5 to 10% w / v.

Further, an anti-clogging agent may be added to the insecticide, if necessary. Examples of such an anti-clogging agent include BHT and BHA, as well as 3,5-di-t-butyl-4-hydroxyanisole, mercaptobenzimidazole, dilauryl-thio-di-propionate,
3-tert-butyl-4-methoxyphenol, 2,6-di-tert-butyl-4-ethylphenol, stearyl-β
-(3,5-di-t-butyl-4-hydroxyphenyl) propionate, α-tocopherol, ascorbic acid, erythorbic acid, 2,2′-methylene-bis-
(6-t-butyl-4-methylphenol), 2,2 ′
-Methylene-bis- (6-t-butyl-4-ethylphenol), 4,4'-methylene-bis- (2,6-di-
t-butylphenol), 4,4'-butylidene-bis- (6-t-butyl-3-methylphenol), 4,
4'-thio-bis- (6-t-butyl-4-methylphenol), 1,1-bis- (4-hydroxyphenyl)
Cyclohexane, 1,3,5-trimethyl-2,4,6
-Tris (3,5-di-tert-butyl-4-hydroxybenzyl) benzene, tris (2-methyl-4-hydroxy-5-tert-butylphenyl) butane, tetrakis [methylene (3,5-di-tert-butyl) -Butyl-4-hydroxyhydrocinnamate)] methane, phenyl-β-naphthylamine, N, N′-diphenyl-p-phenylenediamine, 2,2,4-trimethyl-1,2-dihydroquinone polymer, 6-ethoxy -2,2,4-trimethyl-
Examples include 1,2-dihydroquinoline and the like.

One of these anti-clogging agents may be used alone, or two or more thereof may be used in combination. In addition, the anti-clogging agent is usually contained in the obtained insecticide solution at about 0.
It is added so as to have a concentration of 01 to 10 w / v%, preferably 0.1 to 3 w / v%, but the amount is not limited as far as practicable.

The pesticidal liquid only needs to have such a property that the pesticide is uniformly present in the solvent and has the property of being sucked up by the absorbent core and evaporating from the absorbent core by the heat energy from the heating element. It may be water-based or oil-based, or may be a mixture of water and an organic solvent. When preparing an insecticidal solution, there is no problem if the insecticide is dissolved in the solvent, but if it does not dissolve or does not achieve sufficient dissolution, use an amphipathic substance or a solubilizing agent. Good.

Examples of the solvent include an inorganic solvent and an organic solvent. Examples of the inorganic solvent include purified water, alkaline ionized water, and tap water. As an organic solvent,
For example, n-paraffins, isoparaffins, and other aliphatic hydrocarbons having a boiling range of 150 to 350 ° C. (paraffinic hydrocarbons and unsaturated aliphatic base hydrogen), glycerin, propylene glycol, methanol, isopropanol, 1-octanol, Alcohols such as dodecanol, ketones such as acetone and acetophenone, ethers such as dihexyl ether, diethylene glycol diethyl ether and diethylene glycol monobutyl ether, esters such as dioctyl adipate, diethyl malonate and diethyl phthalate, xylene, chlorcene, Chloroform and silicone oil are exemplified.

Chemical solutions such as sterilization, fungicide, aroma, deodorization and deodorization have the same properties as the above insecticidal solution.
What is necessary is just to prepare using each active ingredient. That is, examples of the bactericide and fungicide to be added to the chemical solution for sterilization and fungicide include Irgasan DP300, Dausil S-13, benzalkonium chloride, benzethonium chloride, hinokitiol, pribendol A ₄ , pribendol A ₃ , thiabendazole (TBZ), dioxin and the like.

Examples of the deodorant / deodorant include lauryl methacrylate, geranyl crotonate, acetophenone myristylate, paramethylacetophenone benzaldehyde, benzyl acetate, benzyl propionate, amylcinamic aldehyde, anisic aldehyde, and the like.
Examples include diphenyl oxide, methyl benzoate, ethyl benzoate, methyl phenylacetate, ethyl phenylacetate, neoline, safrole, citronella oil, and lemongrass oil.

As the fragrance, for example, scented incense, Tatsunobu incense,
Abies oil, almond oil, pagel oil, perch oil, oyster oil, citronella oil, eucalyptus oil, fennel oil,
Natural flavors such as garlic oil, ginger oil, grapefruit oil, lemon oil, lemongrass oil, nutmeg oil, peppermint oil, orange oil, turpentine oil, sage oil, pinene, limonene, linalool, geraniol, citronellal, borneol, benzyl alcohol, Anise alcohol, anethole, eugenol, aldehyde, citral, citronellal, crocodile, ketone, mentone, acetophenone, coumarin, cineol, ethyl acetate, octyl acetate, butyl propionate, isopropyl isobutyrate, allyl caproate, ethyl benzoate, cinnamon And artificial flavors such as methyl acid salt and methyl salicylate.

These agents may be used alone or in combination of two or more, and the amount (concentration) of use thereof can provide a desired effect as appropriate in consideration of the type of the agent, the type of the solvent, the combination thereof and the like. It may be prepared as follows. For example, in the case of a fragrance, the fragrance is 0.0
01-20 w / v%, preferably 0.5-10 w / v%
Can be blended. Further, the above-mentioned anti-clogging agent may be appropriately blended with the insecticidal liquid or the aromatic liquid.

FIG. 1 shows a specific example of a heat evaporation apparatus for performing the heat evaporation method according to the present invention. As shown in the figure, this heating and evaporation apparatus includes a chemical storage container 3 having a core support 2 for supporting a liquid absorption core 1, a liquid absorption core inserted into the container 3 and having an upper portion protruding from the container. 1, a hollow disk-shaped heating element 4 for indirectly heating the upper side surface of the liquid-absorbing core 1, and a support portion 5 and a supporting leg 6 for supporting the heating element 4. The heating element 4 has a cord (not shown) for energizing the heating element 4 to generate heat. Such a heating and evaporation apparatus is described in, for example, Japanese Patent Publication No. 52-12106, Japanese Utility Model Publication No. 58-45670, and the like.

As the heating element used in the above-mentioned apparatus, a heating element that generates heat by applying electricity is generally used. However, the heating element is not limited to this. For example, an air oxidation heating material, a platinum catalyst, or the like is used. Any known heating element such as a heating material may be used. The heating temperature may be appropriately determined according to the type of the heat evaporation component in the liquid and the absorbent core, and is not particularly limited, but the surface temperature of the heating element is usually about 70 to 150 ° C, preferably about 85 ° C. １４145 ° C., which corresponds to a liquid absorbent core surface temperature of about 60-135 ° C., preferably about 70-130 ° C.

In the above description, BHT and / or BHA are contained in the absorbent core.
Or in addition to these, for example, one or more kinds of heating of insecticides, insect repellents, potency enhancers, volatilization rate improvers, flame retardants, deodorants, deodorants, bactericides, fragrances, fragrances, etc. A transpiration component may be contained in the absorbent core. When components for heat evaporation such as insecticides, insect repellents, potency enhancers, volatilization rate improvers, flame retardants, deodorants, deodorants, bactericides, fragrances, and fragrances are contained in the absorbent core, As the liquid absorbed by the liquid core,
A liquid to which the same or a different component from these components is added may be used, or an additive-free liquid containing no such components (for example, only a solvent) may be used.

[0030]

EXAMPLES Hereinafter, the liquid-absorbing wick and the heat evaporation method of the present invention will be described with reference to examples, but the present invention is not limited to these examples.

Example 1 59% by weight of perlite, 19% by weight of wood flour, 2% by weight of activated carbon, 16% by weight of starch and 3.74% by weight of BHT
(16-60 mesh) to obtain a mixed powder. 70 parts by weight of water is added to 100 parts by weight of the mixed powder,
After kneading well, it is formed into a cylindrical rod by an extrusion molding machine,
After drying, an absorbent core was obtained.

Comparative Example 1 62% by weight of pearlite and 20 parts of wood flour without adding BHT
A liquid-absorbent core was obtained in the same manner as in Example 1, except that 16% by weight of starch, 16% by weight of starch and 2% by weight of activated carbon were mixed.

Test Example 1 (Preparation of insecticide) An insecticide having the following composition was prepared, and
ml was filled into a drug solution container. As a solvent, liquid paraffin (distillation property: initial distillation 250 ° C, end point 325 ° C)
It was used. (Component) (w / v%) d, d-T80-Praletrin 4.00 BHT 0.24 Solvent Total remaining amount 100.00

(Evaporation test) Each of the liquid-absorbing wicks (inner diameter 7.0 mm, length 7) obtained in Example 1 and Comparative Example 1 was placed in the chemical container.
(3.5 mm). Next, the chemical solution container is set on the heating and evaporating apparatus as shown in FIG. 1, and the heater (about 140 ° C.)
To heat the liquid-absorbent wick, and repeated on / off at 12-hour intervals, and energized for 180 days. On the first, 30, 30, 90, 150, and 180 days after the start of the test.
On the day, the volatilization amount (mg / 12 hours) of each d · d-T80-praletrin was measured. Table 1 shows the results. The volatilization amount was determined by sucking and collecting the vaporized vapor into a silica gel column at predetermined time intervals, extracting the silica gel with diethyl ether, concentrating the silica gel, and performing quantitative analysis by gas chromatography.

[0035]

[Table 1]

As shown in Table 1, the sample using the liquid-absorbent wick according to the present invention containing BHT exhibited a volatilization time of 2160 hours (180 days) as compared with the sample using the liquid-absorbent wick containing no BHT. ) Until the effective dose was maintained. Also, BHT
, D, d-T80-
Praletrin concentration could be increased to 4.00 w / v%. Also, d, d-T80-praletrin 4.00 w / v%, BHT 0.24 w / v% contained in the insecticidal solution.
Can be contained in the absorbent core of Example 1. This has the advantage that the step of preparing the insecticidal solution can be omitted.

Examples 2 to 4 Liquid absorbent cores were obtained in the same manner as in Example 1 except that perlite, wood flour, activated carbon, starch and BHT were mixed in the proportions shown in Table 2. In addition, also in Examples 2-4, all the components for heat evaporation which are contained in an insecticidal solution can be made to be contained in an absorbent core similarly to the above.

[0038]

[Table 2]

Test Example 2 (Preparation of insecticide solution) As the solvent, the same liquid paraffin as used in Test Example 1 and kerosene No. 1 (distillation property: first distillation 235)
And an end point of 290 ° C.) at a ratio of 40:60 (weight ratio), except that an insecticidal solution was prepared in the same manner as in Test Example 1 and 45 ml of the solution was filled in a drug solution container.

(Evaporation test) Each of the absorbent cores obtained in Examples 2 to 4 was mounted on a chemical solution container in the same manner as in Test Example 1, and was set in a heating and evaporating apparatus. )
To heat the liquid-absorbent wick, and repeated energization / de-energization at 12-hour intervals for 90 days. And 1 from the start of the test
On day 30, day 30, day 60 and day 90,
The amount of volatilization of d-T80-praletrin (mg / 12 hours)
Was measured. Table 3 shows the results. In addition, the measurement of the volatilization amount was performed in the same manner as in Test Example 1.

[0041]

[Table 3]

[0042]

As described above, according to the present invention, the heat evaporation component can be heated and evaporated over a long period of time, and the necessary heat evaporation component can be contained in the liquid absorbent core to improve the liquid content. There is an effect that the amount of heat evaporation component can be reduced as much as necessary.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a heating and evaporating apparatus using an absorbent core.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Liquid absorption core 3 Chemical liquid container 4 Heating element 6 Storage container

 ──────────────────────────────────────────────────の Continued on the front page F term (reference) 2B121 CA03 CA17 CA35 CA46 CA53 CA54 CC02 CC03 CC04 CC13 CC31 FA07 FA13 4C058 AA01 BB07 EE26 JJ01 JJ16 JJ21 4H011 AA02 AA03 AC01 AC06 BA01 BB15 BC01 BC03 BC20 DC22 BC23 DA01 DC05 DC05

Claims (4)

[Claims] An absorbent core used in a heat evaporation method in which a part of an absorbent core is immersed in the liquid to absorb the liquid, and the other part of the absorbent core is heated to evaporate the liquid. An absorbent core for heat evaporation, characterized by containing a heat evaporation component. 2. The liquid absorbent core according to claim 1, wherein said heat evaporation component is contained in a powder form. 3. A part of the liquid absorbent core according to claim 1 or 2 is immersed in the liquid to absorb the liquid, and the other part of the liquid absorbent core is heated to evaporate the liquid. And the heat evaporation method. 4. The heat evaporation method according to claim 3, wherein the liquid contains a heat evaporation component which is the same as or different from the heat evaporation component contained in the absorbent core.