JPS63139557A - Aroma diffusing body and its production - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an aroma emitting object and a method for producing the same.

[Conventional technology and its problems]

BACKGROUND OF THE INVENTION Fragrance emitting products are widely used as a means of creating a comfortable atmosphere in general residences, businesses, vehicles, and the like. These fragrance emitting products are broadly classified into those using solid fragrances and those using liquid fragrances, but liquid fragrances are superior in terms of emission performance, cost, etc.

However, conventional fragrance-releasing products using liquid fragrances have no choice but to be simply stored in a bottle, which limits the area where the fragrance can be released, making it difficult to adjust the amount of fragrance released, and dissipating the fragrance in a short period of time. It was easy to do it. Moreover, the design is limited, and it is not possible to freely obtain products with complex shapes and patterns, and it is not possible to make them large. Furthermore, they lack texture or weight, lack luxury, and have a tendency to dissipate fragrances. The problem was that it had almost no value after that. For this reason, their uses were limited, and they lacked commercial value and practicality as interior decorations and interior equipment.

In addition, it is lightweight and lacks mechanical strength and durability, making it difficult to handle, causing problems such as accidental tipping or falling due to contact with other objects or wind pressure, resulting in damage, and the stored air fresheners tending to leak. there were.

[Means for solving problems]

The present invention was developed through research to solve the above-mentioned problems, and its objectives are to provide a good sense of weight, luxury, excellent mechanical strength and durability, and ease of handling. It is an object of the present invention to provide an aroma emitting object of this type which is easy to use, has a large aroma emission area, and can easily adjust the emission amount.

Another object of the present invention is to provide a method that not only has the above-mentioned characteristics but also has a high degree of freedom in design and can easily and inexpensively mass-produce products with intricate shapes and patterns and large products. There is a particular thing.

In order to achieve this object, the present invention consists of a mixed fired body of ceramic powder and metal powder and a liquid aromatic agent, and the mixed fired body has 10% or more pores due to the passage of evaporable or burnable components contained in the binder. It is characterized in that it has a porous structure of 100% to 100%, and the liquid aromatic agent is stored therein by capillary action.Preferably, the mixing and firing body has a surface treatment layer, and this surface treatment layer allows the aroma to be absorbed. The amount of agent released is adjusted. The surface treatment layer is applied using methods such as plating, thermal spraying, and painting.

Further, the present invention is characterized by a step of mixing ceramic powder and metal powder in a required ratio and adding a binder containing an evaporable or burnable component to obtain a slurry sample; It combines the steps of pouring a sample into a mold and molding it into the desired shape and dimensions, drying and firing the molded object, making the fired object absorb a liquid aromatic agent, and surface-treating the fired object. .

The aroma emitting object according to the present invention can be applied to all kinds of applications where it is necessary to generate odors, including those for creating a normal comfortable atmosphere, medical purposes using the sense of smell, sterilization, deworming, etc. This includes items for sanitary purposes such as insect repellent.

〔Example〕

Embodiments of the present invention will be described below with reference to the accompanying drawings.

Figures 1 and 2 show an example (first example) in which the present invention is applied to a coin.
FIG. 3 shows an example (second example) in which the present invention is applied to an incense burner, and FIG. 4 shows an example (third example) in which the invention is applied to ornaments. .

Reference numeral 1 denotes an aroma dispersion main body, which in the first embodiment has a flat plate shape, and has a decorative portion 3 such as a relief pattern formed on at least its upper surface. In the second embodiment, the main body 1a has a hollow part.
and a lid body 1b, and a decorative part 3 such as an arbitrary pattern 1 is formed on the outer surface thereof. In the third embodiment, the decorative part 3 whose shape and pattern are three-dimensionally formed is a liquid aromatic agent stored in the aroma dispersion main body 1. The liquid fragrance 2 is not limited to natural fragrances, synthetic fragrances, mixed fragrances, or ordinary aromatic fragrances made by adding stabilizers, diluents, etc.
It may contain drugs or chemical substances, such as bactericidal ingredients, antiseptic ingredients, disinfectant ingredients, anthelmintic ingredients, insecticidal ingredients, attractants, repellent substances, and various herbal medicines typified by essential oils. In terms of properties, it does not need to be composed purely of liquid particles, and may also contain fine solid particles.

4 is a surface treatment layer (including a film) formed on the surface of the aroma dispersion main body 1, and in the present invention, it not only improves the appearance but also functions as a dispersion adjustment mechanism for the stored liquid aroma agent 2. The surface treatment layer 4 may be non-porous or porous, and the amount and range (openings) of the stored aromatic agent 2 can be controlled as desired by adjusting the range (area) and thickness to which the surface treatment layer 4 is applied, or a combination thereof. Can be adjusted.

The aroma dissipating body 1 is made of a mixture of porous and dense structure obtained by mixing at least metal powder and ceramic powder in a desired ratio, adding a binder to this mixture, molding and hardening at room temperature, drying and firing. It consists of a fired body.

Here, "metal powder" is any metal including iron.

The "ceramic powder" may be any of these alloys or a combination of two or more thereof.

All oxide and non-oxide ceramics including alumina and mullite can be used.

The metal powder and ceramic powder are selected with specific gravity and color according to each purpose and application.

A suitable formulation is prepared and mixed by conventional mixing means. It is generally desirable that the particle size of the metal powder and ceramic powder be 1000 μm or less in maximum dimension, because if the particle size is too large, mechanical strength and surface stability will decrease. The lower limit is usually desirably 5 μm or more because if the particle size is too small, cracks are likely to occur and the air permeability for releasing the fragrance intended in the present invention is deteriorated.

This is the basic composition of the present invention, to which is added "a binder containing an evaporable component or a disappearing component."

This binder is a substance used not only to bond the metal powder and the ceramic powder, but also to provide the above-mentioned air permeability to the aroma dispersion main body 1. Silica and organic silicate binders are preferably alcohol-based solvent-based silica sol (hereinafter referred to as ethyl silicate) based on ethyl silicate.

In addition, as binders containing disappearing components, urethane resins,
Room-temperature curing resins such as polyester resins and epoxy resins are mentioned, and those made by lowering the viscosity with a solvent are particularly preferred.Additionally, if necessary, an appropriate amount of a conventional binder such as water glass may be added. good.

The addition rate of the binder containing the evaporated component or the disappearing component to the mixture of metal powder and ceramic powder is appropriately selected from the viewpoints of required air permeability and strength. Further, in order to further improve air permeability, the particle size of the powder may be changed, but it is also recommended to add a small amount of a substance that burns out or disappears, such as crystalline cellulose or ammonium carbonate, to make it easier.

Furthermore, a sponge-like material such as a urethane foaming agent may be added to increase the porosity.

In addition, if high strength is required for building materials, structures, etc., one or more types of natural or synthetic organic or inorganic fibers or metal fibers may be added to the basic powder mixture. is an intestine with a diameter of 5 to 400 μm,
A length in the range of 0.05 to 3 cm is appropriate in terms of formability and surface stability, and the upper limit of the amount of this fiber added to the basic powder mixture is usually 20 VO 1%.

FIG. 5 shows a micro cross section of the aroma dissipating body 1 according to the present invention, in which 10 is a metal oxide powder particle, 11 is a ceramic powder particle, and 12 is a fine pore, which is an open bore extending from the inside to the surface. The liquid aromatic agent 2 permeates and is stored in the aroma dispersion main body 1 due to the capillarity (self-absorption power) of the fine pores 12.

It is preferable that the aroma diffuser body 1 has an average pore diameter of 10-100 μm and a porosity of 10% or more.

This is because if the porosity is too low, although the mechanical strength is good, the storage amount or retention efficiency of the liquid aromatic agent decreases, and the dispersion performance deteriorates in a short period of time.

Figure 6 shows the relationship between the porosity and ventilation time in the aroma dissipating body 1, which was prototyped using a 5:5 ratio of iron powder and mullite and ethyl silicate as a binder.
25+mmH).

It can be seen that the higher the porosity, the more the liquid fragrance can be stored and therefore the more continuous the emission can be for a longer period of time. However, if the porosity is too high, there are problems such as a decrease in mechanical strength and a decrease in surface roughness. Therefore, practically, it is preferable that the upper limit of the porosity is about 50%, and within this range, the degree and range of diffusion are finely adjusted using the surface treatment layer 4 described above.

Next, a method for producing a fragrance emitting object according to the present invention will be explained.

Figure 7 schematically explains this method, first.

As shown in FIG. 7(a), a binder 7 containing an evaporable component or a dissipated component is added to a basic powder mixture of ceramic powder 5 and metal powder 6 or a blend of this with fibers added, and the mixture is thoroughly stirred and mixed to form a slurry. Sample 8 is obtained.

Next, as shown in FIG. 7(b), the slurry-like sample 8 is poured into a desired mold (integrated one-piece mold) 9 or mold frame 15 to be molded into the desired shape and dimensions.

Because it is cast molded, decorative parts with complex irregularities and patterns can be molded easily and with great precision.

In other words, if a model, master model, or actual item (any natural or artificial item can be used) is used as the mold 9 or formwork 15, the shape, pattern, design, symbol, etc. can be accurately transferred. Moreover, since there are no particular restrictions on the size, large-sized aroma dissipating bodies can be easily manufactured.

Also, if necessary, add legs to the mold or formwork during this molding process.

By incorporating desired accessories such as arms, bottles, rods, and tubes, they can be easily integrated.

In addition, in order to obtain the aroma dispersing body 1 with a closed cross section or a cavity, a material that burns out at a temperature below the firing temperature, such as paper, is made into a desired shape, and this is placed in the mold 15 or the mold 9, and a slurry sample is prepared. 8 can be easily made by pouring, molding, and curing.

Then, after pouring and solidifying the aroma dissipating main body, after demolding,
dry. Drying is performed by natural drying and/or ignition drying. This is to prevent the occurrence of cracks and distortions, and to create porosity due to the evaporable components (water and alcohol) contained in the binder.

That is, the evaporable components of the binder uniformly dispersed in the slurry material 8 pass from the inside of the aroma dissipating body element 1' through the wall thickness to the outer surface, and are diffused into the outside air.
As a result, the pores always become open pores, and although the structure is dense, countless fine pores with the above-mentioned pore diameter and porosity are formed throughout. Of course, drying may be carried out using a high temperature atmosphere or hot air, if necessary.

Next, the dried aroma dissipating main body 1' is shown in FIG. 7(c).
It is charged into a heating furnace or the like 16 and fired as shown in FIG.

The firing conditions should be selected within a range that provides the required strength depending on the material of the powder used and does not cause surface roughness or decrease dimensional accuracy. Generally, the atmosphere is an oxidizing atmosphere,
The firing temperature is set at 400° C. to 1000”C, and a predetermined time period may be selected within this temperature.

Through this firing process, the firing of the ceramic powder 5 and the oxidation sintering of the metal powder 6 progress, a hardened layer grows from the surface toward the inside, and at the same time, the binder volatile matter and burned-out components remaining in the element body are burned. The removal promotes an increase in strength and porosity, and the material for forming the cavity is also burned away, thus forming the above-mentioned cavity. In addition, urethane resin etc. are used as a binder.

When a room temperature curable resin is used, carbon dioxide gas, triethylamine gas, or the like may be flowed after molding, followed by firing.

Since the aroma dispersion main body 1 is obtained through the above steps, the seventh
As shown in Figures (d) and (a), the liquid aromatic agent 2 is stored and a surface treatment layer 4 is applied. The simplest method of storing the liquid aromatic agent 2 is to store the liquid aromatic agent 2 in a container 17 as shown in the figure, and to bring the entire or part of the aroma dispersion body 1 into contact with the liquid aromatic agent 2. Since the fine pores 12 are open on the surface, self-absorption occurs naturally due to capillary phenomenon. In addition, in order to store the liquid fragrance more rapidly, the liquid fragrance 2 may be pressurized and forced into the fragrance dispersion main body 1, or conversely, negative pressure may be applied to the fragrance dispersion main body 1 and the liquid fragrance may be inhaled.

In any case, the fine pores 12 run in a maze-like manner, and since the number thereof is extremely large, the surface area is large, and a sufficient amount of the liquid aromatic agent 2 can be stored. In addition, in this step, if the viscosity of the liquid aromatic agent 2 is too high, it may be diluted by adding a liquid such as ethanol at a ratio of about 1=1 to 1:5.

Specific methods for applying the surface treatment layer 4 include, for example, thermal spraying of metal or non-metal, plating, spraying,
Painting methods such as brush painting and electrostatic.

Further, thin film forming methods such as vacuum evaporation and sputtering may be mentioned. What is shown in the figure is metal spraying by a thermal spraying machine 18, in which molten metal particles 19 collide and adhere to the surface of the aroma dissipating main body 1 at high speed. A surface treatment layer 4 having a required thickness is formed, and the amount of the stored fragrance is regulated.

Note that the process of forming the surface treatment layer 4 and the process of storing the liquid aromatic agent may occur either first, but if treatments such as washing or heating are involved, the process of storing the liquid aromatic agent should be performed later. be.

Note that the first to third embodiments are merely examples of the present invention, and can be applied to articles as exemplified below.

■Tables, storage stands, and kotatsu boards.

Furniture such as decorative columns and heavy installations ■Various indoor equipment such as jewelry boxes, organizing boxes, storage, ornament stands, picture frames, decorative plates, photo booths, shields, cups, etc.■Product cases, display devices, etc. Various product display supplies ■ Candle holders, desk lamps, li! Clocks and hangers on the clock side, daily miscellaneous goods such as a pen stand, dolls, toys such as kokeshi dolls, smoking materials such as ashtrays and pipe bowls ■ Building materials and fixtures such as indoor and outdoor flooring, wall materials, doors, etc. ■ Sanitary products typified by valve seats, etc. ■ Outdoor equipment such as lanterns, pseudo-rocks, etc. ■ Various instruments for medical treatment, deworming, insecticidal, sterilization, etc. It has good mechanical strength because it is made of a dense hardened structure made of fired metal powder and ceramic powder, and has a high specific gravity due to the use of metal powder. It has a high degree of freedom in design and pattern, and has very good precision in size and shape. Therefore, it has a sense of weight, is beautiful, luxurious, and robust, and will not be easily damaged even if it falls or falls.

Moreover, the average pore diameter is 10 to 100 μm and the porosity is 10 due to the evaporation in the binder or the passage or flow of firing components.
Equipped with porous ventilation characteristics consisting of 12% or more of micropores,
Because of the large surface area.

It is possible to store a large amount of liquid fragrance 2, and
The liquid aromatic agent 2 can be finely dispersed and diffused, and the amount of diffusion and the location of the diffusion can be freely controlled by the surface treatment layer 4 which also serves to improve the aesthetic appearance. In use, the liquid aromatic agent 2 becomes fine droplets with the same diameter through the fine pores 12 (open bores), rises to the surface, evaporates, and is dissipated into the atmosphere from the aroma dispersion body 1.

゛Also, the present invention has a high commercial value because it can diffuse fragrance using an article that is intended for its original purpose.
Even if all the fragrance is dissipated, it can still perform its original function.

Specific examples of the present invention are shown below.

1. Iron powder (average particle size 44 μm) 50 wt%, mullite.

(Average particle size 44 μm) A 50% mixture was made, and 18% of ethyl silicate hydrolyzate was added as a binder to this.
The slurry was mixed and poured into a mold, dried for 48 hours after demolding, and baked at 900°C for 20 hours in the air to form a mold with a width of 120 cm, a length of 200 cm, and a thickness of 30 cm as shown in Figure 1. A fragrance-emitting body was obtained.

(2) In the obtained aroma-diffusing body, uniform fine pores with an average diameter of 10 μm and a porosity of 25% were formed throughout the body due to the passage of volatile components in the binder.The zero strength is a compressive strength of 800.
kg/aJ, and the specific gravity was 2.5.

(2) In order to improve air permeability, an aroma-dispersing main body was prepared by adding crystalline cellulose to the above blending ratio (S:S) and the blending ratio of iron powder and mullite powder to 8=2.

The results of measuring the amount of crystalline cellulose added and the aeration time are shown in Figure 8. It can be seen that the addition of crystalline cellulose further improves the air permeability, and that the air permeability can be easily adjusted without changing the basic composition.

■Use a liquid fragrance prepared by diluting liquid fragrance (Fragrance manufactured by Takasago International Co., Ltd., product number BA1863, 1864, 1865) with ethanol at a ratio of 1=4, let 20g of this be naturally absorbed into the fragrance dispersion body, and then A product was obtained by spraying bronze onto the surface of the diffuser body except for the bottom surface using a thermal spraying machine to a thickness of 150 μm. This product maintained good aroma volatility even after one year.

(2) The relationship between the opening area and the volatilization amount of this perfumed product was tested. The test piece is 30φX50a+m and the above 3
2g of a seed aromatic agent was scented, and the following three kinds of aromatic agents were coated on the surface layer.

a. Not covering the entire surface...opening area 461db, only covering the body...14a for each opening area JC1 coating only the body and one end surface...opening area 47aJ Test method: change in ball amount over approximately 60 days at room temperature This was done by measuring. The results are shown in FIGS. 9 to 11. from this result.

It can be seen that the present invention provides excellent aroma dispersion properties, and that the volatilization conditions of the aromatic agent can be freely adjusted by surface coating.

■, 0 who created the aromatic ornament in the shape of a rabbit in Example 4
The dimensions are 130 x 130 x 90 m, and the weight ratio of iron powder and mullite is 8 = 2. To this, 20% of ethyl silicate hydrolyzate and 3.0% of crystalline cellulose are added to make a slurry sample. Pour into.

After demolding, it was dried for 48 hours and fired in an air atmosphere at 900° C. for 48 hours to obtain an aroma-dispersing body. This fragrance emitting body is extremely precise, has good dimensional accuracy, and weighs 1,700 yen.
g, porosity was 30%.

Liquid fragrance (Fragrance manufactured by Takasago International Co., Ltd., product number BA1863) was added to this fragrance emitting body with 1 = ethanol.
Inject 50g of liquid fragrance diluted at a ratio of 4 under pressure,
Approximately 45 μ thick coating film (bottom 1
0μ,) was coated.

This aroma diffuser continued to emit a good aroma even after one year had passed.

[Effects of the Invention] According to the present invention as described above, the main body is composed of a mixed fired body of ceramic powder and metal powder, and a liquid aromatic agent,
The mixed and fired body has a porous structure with a porosity of 10% or more due to the passage of the evaporable or burnable components contained in the binder, and the liquid aromatic agent is stored inside by capillary action, so that it can be used for various articles. can function as an aroma emitting substance while retaining its original function. Moreover, since it is a composite fired product of ceramic powder and metal powder, it is heavy, and since it can be freely formed with elaborate decorations such as patterns, it can be made into a luxurious and luxurious product with high commercial value.

Moreover, since it has good strength, durability, and robustness, it can be applied to articles that are subjected to force.

Further, according to the manufacturing method of the present invention, it is possible to easily and inexpensively mass-produce this type of aroma-emitting object having the above-mentioned characteristics and having a complex and highly accurate shape pattern, and this type of hollow or large-sized object. Excellent results can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the aroma dispersion object according to the present invention, and FIG. 2 is a sectional view thereof. FIG. 3 is a cross-sectional view showing another embodiment of the present invention, FIG. 4 is a partially cutaway perspective view showing another embodiment of the present invention, and FIG. 6 schematically shows the structure of the aroma-dispersing object according to the present invention. Enlarged cross-sectional view,
FIG. 6 is a graph showing the relationship between porosity and aeration amount in the present invention, FIG. 7 (a) to e) is an explanatory diagram schematically showing an example of the manufacturing method of the present invention, and FIG. Graphs showing the relationship between the amount of addition and the amount of ventilation, and FIGS. 9 to 11 are graphs showing the relationship between the surface treatment area and the amount of volatilization of the aroma emitting object of the present invention. 1... Fragrance dispersion main body, 2... Liquid air freshener, 4...
Surface treatment layer, 12... fine pores

Claims (3)

[Claims] (1) Consisting of a mixed fired body of ceramic powder and metal powder and a liquid aromatic agent, the mixed fired body has a porous structure with a porosity of 10% or more due to the passage of evaporable or burnable components contained in the binder. . An aroma dissipating object, characterized in that the liquid aroma agent is stored inside by capillary action. (2) The fragrance emitting object according to claim 1, wherein the mixing and firing main body has a surface treatment layer, and the amount of fragrance emitted is adjusted by the surface treatment layer. (3) Mix ceramic powder and metal powder in the required ratio,
A process of adding a binder containing an evaporable or burnable component to obtain a slurry sample, a process of pouring this slurry sample into a mold and molding it into a desired shape and size, and a process of drying and firing the molded body. A method for producing an aroma emitting object, which comprises the steps of: absorbing a liquid aromatic agent into the fired body; and surface treating the fired body.