JP2898375B2 - Composite solid and method for producing the same - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a composite solid and a method for producing the same, and more particularly, to a composite solid which floats on a water surface in a tank to dissolve necessary components and a method for producing the same. About.

[Conventional technology]

Conventionally, various foaming agents are known as composite solids.

For example, as an example of such an effervescent agent, an effervescent agent for bathing, bath water purification or pool water disinfection containing an effective medicinal component and a carbonate, bicarbonate, organic acid component, etc. It has been known. Examples of the contained medicinal component include, for example, in the case of a foaming agent for bath, a dried extract of medicinal plants such as a dried extract of touki. Other necessary components other than the effective medicinal component include, for example, carbonate,
Examples include bicarbonate, organic acid components, and others. In the production, these components are mixed to form a powder, and the powder mixture is tableted or granulated.

When the above-mentioned foaming agent is put into water or hot water, the components therein react with each other, dissolve quickly while generating carbon dioxide gas, and dissipate the medicinal component. Therefore, especially when used as a foaming agent for baths, in addition to the medicinal effects of the contained active medicinal ingredients, the foamed carbon dioxide gas has the effect of promoting blood circulation, and is therefore pleased.

[Problems to be solved by the invention]

By the way, any of the conventional composite solids has an apparent specific gravity of more than 1, reacts with water while sinking in water, generates carbon dioxide gas, and elutes the formulated active ingredient into water.

Here, the spreading of the active ingredient throughout the water is simply due to the diffusion phenomenon due to the concentration gradient.

Therefore, bath agents and the like may be stirred at the time of bathing, but bath water purifiers, pool water disinfectants, toilet cleaners, etc., when used in large volumes of water, take a long time in the conventional method relying only on natural diffusion, The medicinal effect is not sufficiently exhibited.

The present invention solves such a conventional problem,
It is a technical object of the present invention to provide a composite solid material in which the components are immediately spread into the water of the entire container after dropping it in water, and a method for producing such a composite solid material.

[Means for solving the problem]

In order to solve the above-mentioned problems, the first composite solid of the present invention has a non-foamable molded part and a foamable powder molded part joined to each other, and both of them are water-soluble or landslide. And at least one of them contains a necessary active ingredient, and the total apparent specific gravity of both is less than 1.

The second composite solid of the present invention is formed by joining a water-soluble or water-collapsible foaming powder molded part to the powder molded part, and holding the powder molded part in the water while keeping the powder molded part in the water. A floating water-soluble or water-collapsible box is included, and at least one of the box and the foamable powder molded part contains an active ingredient so as to be dissipated in water.

The method for producing a composite solid according to the present invention comprises a step A of molding a non-foamable molded part and a step B of molding a foamable powder molded part.
And further comprising a step C of joining the obtained non-foamable molded part and the foamable powder molded part, with an apparent overall specific gravity of less than 1, and two steps of the above steps A and B In at least one of the above, there is a step of containing an active ingredient in a molded part to be obtained, and the step A of molding a non-foamable molded article is a water-soluble organic compound which is solid at ordinary temperature, and / or
Or, the inorganic powder, at least one of three steps of a step of stamping and molding into a molded article of a predetermined shape, a step of melt molding, and a step of press molding at a predetermined pressure,
On the other hand, the step B of forming the expandable molded product comprises a bicarbonate and / or carbonate which is solid at ordinary temperature, and further comprises an organic acid and / or an inorganic weak acid which is solid at ordinary temperature, and such a salt and an acid. This is a step of press-molding the powder mixture containing the foamable component at a specific pressure.

The step of melt-molding in the step A is preferably performed while stirring with a stirrer to incorporate a large number of bubbles and adjusting the apparent specific gravity of the obtained non-foamable molded portion to 0.5 to 0.9.

[Action]

Since the composite solid of the present invention is a composite solid having the above structure, it floats on the surface of the water, and reacts with water to dissolve the whole, and at the same time, solid bicarbonate and / or carbonate at room temperature, Furthermore, a molded product containing an organic acid and / or an inorganic weak acid which is solid at room temperature, such a salt and an acid, gives a propulsive force to the molded product when carbon dioxide gas is generated, and floats on the water surface.

Normally, once the gas due to the foaming of the foamed molded product breaks even a part of the foamed molded product, the foamed molded product starts to collapse greatly, and the gas concentrates on the collapsed and dented part and the gas in a certain direction In addition, the propulsive force is further applied, and the active ingredient is widely and uniformly diffused on the water surface.

At this time, the active ingredient blended in both molded products spreads throughout the water in the container, and can be more uniformly diffused without stirring by external force. Furthermore, since both components are water-soluble or friable,
No residue is generated, so that the drain outlet is not clogged, and the trouble of rearranging the residue can be omitted.

 Hereinafter, the present invention will be described in more detail.

<Composite solid substance> The composite solid substance of the present invention is usually preferably used as a bath additive, a cleaning agent, a bactericide, or the like. However, the use is not limited to these.

As shown in FIG. 1, the first composite solid material of the present invention is composed of two parts: a non-foamable molded part which is part A, and a foamable powder molded part which is part B.

The non-foamable molded part, which is part A, usually contains a water-soluble organic compound which is solid at ordinary temperature and / or an inorganic powder as a main component.

When part A of the composite solid is made of a water-soluble organic compound, it is preferable that air or an inert gas such as nitrogen or carbon dioxide be dispersed in the molded product. When the gas is dispersed, the apparent specific gravity is less than 1, depending on the condition, is 0.95 or less, and more preferably 0.9 to
0.5 is preferable.

The specific gravity may be adjusted by mixing air or the like by stirring at the time of production.

When an inorganic powder having a true specific gravity of 1 or more is used as a main component of the part A, if an atomizing treatment and / or a granulating treatment are performed before molding the non-foamable molded part, the apparent specific gravity of the part A is less than 1. And is preferred. In the granulation treatment, it is preferable to use the water-soluble organic compound as a binder.

Part B constituting the composite solid, that is, the foamable powder molded part contains a foaming component.

The specific gravity of the portion B is preferably 1.06 to 1.07. In particular, when the specific gravity of the part A is less than 1 and the specific gravity of the part B is within this range, a foaming action occurs in water, and a strong propulsive force is applied to the composite solid floating on the water surface, which is particularly preferable.

Part B is preferably mixed at the time of production with, for example, a Henschel machine, and the specific gravity is adjusted to 1.06 to 1.07.

Both part A and part B are joined. Both may be bonded to each other via an adhesive layer C made of a water-soluble polymer compound. At least one of the part A and the part B may be fused to the other. Both may be mechanically fitted with each other. The joining form of both does not particularly matter.

The apparent specific gravity of the entire composite solid of the present invention is less than 1. Preferably less than 1 and 0.6 or more, more preferably 0.95
~ 0.7 is desirable. If the specific gravity is 1 or more, it is not good to sink from the beginning when it is put into water. The weight ratio of Part A to Part B is preferably 1: 1 to 2: 1 in Part A: Part B.

On the side surface of the composite solid material where the part A and the part B are joined,
As shown in FIG. 2, the direction in which carbon dioxide gas is ejected can be controlled by providing a spiral groove or by biasing the portion B to one side with respect to the center of gravity. In this case, the composite solid comes to move while rotating or circling on the surface of the water, and as a result, each component constituting the composite solid automatically diffuses widely and uniformly into water. preferable. It is also preferable to enhance the visual effect.

<Components> Part A and part B of the composite solid material of the present invention preferably contain, for example, the following components as main components.

The main component of Part A is a water-soluble organic compound that is solid at room temperature, or an inorganic powder, or both.

Examples of the organic compound that can be preferably used as the main component of Part A include polyhydric alcohols such as polyethylene glycol, polyoxyethylene polyoxypropylene glycol, sorbitol, mannitol, sucrose, glucose, starch, gum arabic, and sodium alginate. , Carboxyvinyl polymer, water-soluble polymer such as methylcellulose, dextrin, polyoxyethylene alkyl ether, polyoxyethylene polyoxypropylene alkyl ether, polyoxyethylene (15 mol or more) fatty acid ester, polyoxyethylene (15 mol or more) phytosterol Surfactants such as polyoxyethylene (20 mol or more) alkyl phenyl ether, polyoxyethylene (50 mol or more) hydrogenated castor oil, N-acylmethyltaurine salt, Phosphate, succinic acid, organic acids tartaric acid, other, l-ascorbic acid, choline, inositol, vitamins such as riboflavin, dyes, and natural dyes. Also, enzymes can be used.
These water-soluble organic compounds are preferable since they dissolve without floating on the water surface when the molded product collapses on the water surface.

As the inorganic powder, those having a true specific gravity of 1 or more, specifically, sulfur, titanium oxide, zinc oxide, magnesium oxide,
Inorganic oxides such as iron oxide, chromium oxide, and silicic anhydride; inorganic salts such as sodium carbonate, calcium carbonate, magnesium carbonate, magnesium silicate, calcium sulfate, and sodium chloride; talc, kaolin, bentonite, calamine;
Complex oxides such as mica are exemplified. These inorganic powders are preferable because when the molded product collapses on the water surface, the powder dissolves or precipitates without floating on the water surface.

These may be used alone or in combination. Among them, polyethylene glycol (average molecular weight 4000 to 6000), polyoxyethylene (20 mol or more) polyoxypropylene glycol, polyoxyethylene (10 mol or more) alkyl ether, polyoxyethylene (15 mol or more) polyoxypropylene alkyl ether , N-acylmethyltaurine salts are preferred, and polyethylene glycol is particularly preferred.

Part B constituting the composite solid, that is, the foamable powder molded part contains a foaming component.

The foaming component contained in part B comprises a salt and an acid. Examples of the salt constituting the foaming component include bicarbonate or carbonate which is solid at normal temperature or both. When constituting the foaming component, an organic acid or an inorganic weak acid which is solid at room temperature or both thereof can be exemplified.

Specific examples of the organic acid that can be used in the present invention include succinic acid, citric acid, tartaric acid, fumaric acid, lactic acid, malic acid, and the like. Examples of the weak acid that is solid at normal temperature include sodium hydrogen phosphate. These may be used alone or in combination. Among them, citric acid is particularly preferred.

The bicarbonate constituting the foaming component together with such an acid in the present invention is a solid at ordinary temperature, and specifically, sodium bicarbonate, potassium bicarbonate, other alkali metal salts except lithium, and carbonate. Ammonium hydrogen can be mentioned. These may be used alone or in combination. Among them, sodium hydrogen carbonate is particularly preferred.

Further, in addition to the bicarbonate and the organic acid which is solid at room temperature, the entire foaming component may be constituted including the carbonate. It is preferable to add a carbonate to one of the constituent components of the foaming component, because generation of carbon dioxide due to spontaneous decomposition of the hydrogen carbonate is suppressed, and long-term storage is possible. Preferred carbonates to be included as the foaming component include sodium carbonate, potassium carbonate, ammonium carbonate and the like, and among them, sodium carbonate is particularly desirable.

The proportion of each constituent substance in the foaming component composed of the compound as described above is, based on the whole foaming component, an organic acid or an inorganic weak acid, and when both are used, the total ratio of both is 20 to 60% by weight. % Is preferable. Of these, the proportion of bicarbonate is preferably 8 to 30% by weight. The content of the carbonate is preferably 5 to 30% by weight.

In the present invention, one or both of the parts A and B composed of such components contain an active ingredient according to the intended use.

For example, when the use is a bathing agent, the following bath medicine components may be appropriately divided and contained in Part A or Part B or both.

Such components for bath medicine that can be used in the present invention include herbal extracts (crude herbs), seaweed extracts,
Enzymes (lipase, protease, etc.), sulfur, etc.
For example, as a herbal extract, eucalyptus, chimpanzee, senkyu, rhododendron, jiou, liquorice, barley, bakuryo, botanpi, junipera, juniper, oak,
Extracts such as Japanese gourd, Chionoecetes opilio, Bohu, Tissou, Usuiniaoi, Hamamerisu, Arnica, Calendula, Acacia catechus, St. John's wort, Shazenshi, Genoshoko etc. are mentioned. These extract extracts are preferably used in a dried form, but may be used in the form of an extract in a small amount. These may be used alone or in combination.

In addition, flavors, hydrocarbons, fatty acids, oils such as wax, ethanol, alcohols such as propanol, glycerin,
1,3-butylene glycol, polyethylene glycol,
Liquid polyhydric alcohols such as sorbitol, other preservatives, bactericides, ultraviolet absorbers, antioxidants, coloring agents, sugars, amino acids, sodium hyaluronate, caramel, cyclodextrin, and the like are also preferably included as active ingredients.

In particular, it is preferable to include a fragrance, a coloring agent, and the like, because the atmosphere during bathing can be improved.

For example, enzymes, sulfur, and the like are water-soluble organic compounds or inorganic powders that are solid at room temperature and can be preferably used as a main component of Part A, but can also be used as medicinal components, and are therefore preferable.

When the application is a cleaning agent for pools or toilets, for example, a bactericide or an antibacterial agent may be included as an active ingredient.

When the composite solid of the present invention is a bath or pool cleaner, the following substances, for example, may be appropriately distributed to Part A or Part B or both as an active ingredient.

Such medicinal components include, for example, sodium peroxide, bleached powder, parahydroxybenzoates,
Fungicides such as alkyldimethylbenzylammonium salts, salicylic acid, benzethonium chloride, chlorohexidine gluconate, and hexachlorophene, and antibacterial agents can be mentioned.

In addition, for example, when the composite solid according to the present invention is used as a cleaning foaming agent, it is preferable to include, for example, a surfactant as an active ingredient.

As the surfactant in such a case, specifically,
Examples thereof include alkali metal salts of alkyl sulfonic acids such as sodium alkyl sulfonate, alkali metal salts of olefin sulfonic acids such as sodium α-olefin sulfonate, alkali metal salts of alkyl sulfate, acyl amino acid alkali metal salts, and fatty acid soaps. it can.
These are used alone or in combination. Among them, alkali salts of alkyl sulfonates, particularly sodium alkyl sulfonates, or sodium α-olefin sulfonates are preferred.

Hereinafter, examples of the components of Part A and Part B are shown in Table 1 by weight%.

However, the values in parentheses are the optimum values.

In the second composite solid according to the present invention, the box and the water-soluble or water-collapsible foamable powder molded part are joined to each other.

The true specific gravity of the component of the box joined to the foaming powder molded part may be 1 or more, or may be less than 1. The box may be floated on the water surface while holding the foamable powder molded part in the water. For example, the inside may be a hollow closed body or may be formed in a hull shape with an upper opening. Shape does not matter. Moreover, it is preferable that the foamable powder molded portion is joined to the bottom as an exterior of the box.

 Further, the joining method and the joining form do not particularly matter.

The box component may be water-soluble or water-insoluble / non-water-insoluble.

The constituent components of the foamable powder molded part may be formed of various components described in the description of the first composite solid.

The second composite solid contains an active ingredient similar to the active ingredient already described in the description of the first composite solid according to the actual application.

The active ingredient is contained in the foamable powder molded part, and may be formed to dissipate as the foamable powder molded part dissolves or dissolves. It may be loaded in a box made of a substance and emitted from a small hole provided at the bottom of the box.

Further, the box is formed of the water-soluble or water-disintegrable substance described above as the constituent substance of Part A in the description of the first composite solid, and the active ingredient is contained in the box constituent material component. It may be contained as one of them.

<Production Method> The first composite solid material of the present invention may be produced, for example, by the following method.

Part A and part B of the first composite solid are preferably formed separately.

In any of the molding step of the part A and the molding step of the part B, there is always a step of mixing an active ingredient such as a bath medicine component or a fragrance into the components.

The method of molding part A will be described on the premise that a step of mixing an active ingredient is included in step A, which is a molding step of part A, or step B, which is a molding step of part B.

As the step A, a die cutting method, a melt filling method, a press molding method, or the like may be used.

In the case of the die-cut molding method or the melt-filling method, the water-soluble organic compound alone, or a mixture of the water-soluble organic compound and the inorganic powder, optionally in the presence of an organic solvent, is heated and melted. The apparent specific gravity is adjusted to 0.5 to 0.9 while blowing air or inert gas, stirring or kneading.

Next, in the case of the die-cutting molding method, the molten material is formed into a sheet by a casting method or the like, solidified by cooling, and then die-cut using a die having a predetermined shape.

In the case of the melt filling method, the molten material is poured into a cavity formed by inverting a predetermined shape and engraved, and then cooled and solidified.

On the other hand, in the case of the press molding method, a water-soluble organic compound and / or an inorganic powder are filled into a cavity formed by inverting a predetermined shape and engraved, and then press-molded at a predetermined pressure.
In addition, when performing by press molding, before performing molding, melt granulation method, spray granulation method, fluidized bed granulation method, crush granulation method,
The water-soluble organic compound is granulated (0.01 μ to 2 mm) by compression granulation, etc., and if necessary, is granulated to an apparent specific gravity of 1 or less, preferably 0.5 to 0.9 (50 μ to 5 mm). About 1 or less, preferably 0.
It is preferable that the particles are finely divided to 5 to 0.9 (20 μm or less, preferably 1 μm or less) or granulated (50 μm to 5 mm).

The step B for forming the expandable molded product may be performed as follows.

For example, an effervescent component comprising a bicarbonate or carbonate solid at room temperature, a powdered organic acid, an inorganic weak acid, or the like, and if necessary, other powders are added and mixed. Examples of other powders include the above-mentioned water-soluble organic compounds and inorganic powders. The mixing order does not matter.
The powder mixture is taken out in a specific amount, filled into a cavity of a specific volume, and the whole is pressed.

The weight of the powder mixture filled in the cavity is preferably the same weight to 0.5 times the weight of the non-foamable molded part to be joined.

The pressing force is 200 to 1.5 × 10 ³ Kg / cm ² , preferably 200
〜1 × 10 ³ Kg / cm ² is desirable. If the pressing force is less than 200 kg / cm ² , the resulting foamed molded product is likely to collapse, which is not preferable. If the pressing force exceeds 1.5 × 10 ³ Kg / cm ² , the hardness of the foaming agent obtained is too high and it is difficult to dissolve in water, which is not preferable. Further, the press machine causes air leakage and the like, which is extremely difficult in practice. Further, when press molding is performed in this range, the specific gravity of the obtained foamable powder molded portion usually falls within the most preferable range of 1.06 to 1.07.
By inserting a polypropylene or polyethylene film between the press pusher and the powder for the outer shell component to be compressed, the film can be easily separated between the press pusher and the powder for the outer shell component to be compressed. This is preferable because

In the present invention, the thus obtained part A and part B are joined in the step C. For example, a sufficient amount of water may be contained in a water-soluble polymer compound so that both bonding surfaces are adhered to each other and dried.

Alternatively, when the part A is manufactured by a melting method, the obtained part A may be brought into contact with the part B at an uncured stage, and the part A may be joined together with the curing of the part A.

According to such a method, the apparent overall specific gravity is usually 1 unit.
Composite solids that are less than can be obtained.

〔Example〕

 Hereinafter, embodiments of the present invention will be described.

<Example 1> A bath agent was produced.

Part A was composed of the components shown in Table 2 and Part B 2 was composed of the components shown in Table 3.

The compositions having the proportions shown in Table 2 were mixed, heated and melted at about 80 ° C., and stirred while bubbling, and the stirring was stopped at a time when the apparent specific gravity was about 0.85.

This was poured into a rubber cavity in which the shape of a rose flower was modeled to obtain Part A 1 in an uncured stage.

On the other hand, the compositions having the proportions shown in Table 3 were mixed with a Henschel mixer, then weighed and placed in a circular cavity, pressed at a pressure of 100 kg / cm ² and formed into tablets having a diameter of 2 cm and a thickness of 1 cm, Part B 2 was obtained.

Next, the above-mentioned B portion 2 was placed on the previously uncured A portion 1 and both were adhered. Next, after cooling and solidifying the rubber cavity in water, the rubber cavity was expanded and a composite solid as shown in FIG. 1 was taken out.

Next, a linear groove 3 was formed around the obtained composite solid to obtain a composite solid as shown in FIG. 2 and FIG.

When this was floated in hot water of about 40 ° C, it collapsed in about 15 minutes while moving around in the bathtub.

<Example 2> A cleaning agent for a water washer was formed.

Table 4 shows the components of Part A1 and Table 5 shows the components of Part B2.

The compositions having the proportions shown in Table 4 were mixed, melted by heating to about 80 ° C., and stirred while bubbling at that temperature. Apparent specific gravity
When about 0.8, the stirring was stopped.

The foamed composition was left to cool to about 50 ° C. for a while, and then formed into a sheet having a thickness of about 10 m / m by a casting method.

When the obtained sheet-like material was further cooled to room temperature, it was punched into a disk having a diameter of 2 cm to obtain Part A 1.

On the other hand, a composition having the ratio shown in Table 5 was prepared, mixed with a Henschel mixer, weighed, placed in a circular cevitie, and pressed under a pressure of 200 kg / cm ² to obtain a diameter of 2 cm and a thickness of 1 c.
m-shaped tablet B part 2 was formed.

A very small amount of a 50% by weight carboxymethylcellulose solution was applied as an adhesive to the disk of Part A to obtain Part C,
Part B was laminated thereon, and part A 1 and part B were bonded to obtain a composite solid as shown in FIG.

When the obtained composite solid was put into a water washer, it floated on the surface of the water, vigorously generated carbon dioxide gas, moved around, and collapsed in about 10 minutes.

It was found that the disinfectant alkyldimethylbenzylammonium salt and bleaching powder spread throughout the water washing machine, and a more rapid disinfecting effect was obtained than with the conventional detergent.

<Example 3> Compositions having the ratios shown in Table 2 were mixed and heated and melted at about 80 ° C to obtain a melt having a specific gravity of 1.1.

The obtained melt was poured into a rubber cavity shaped like a small boat, and a hull-shaped box 5 was obtained.

On the other hand, the B part 2 of Example 1 was formed again according to Example 1, and it was packaged near the stern behind the bottom of the box body 5 to obtain a composite solid as shown in FIG. . The carboxymethylcellulose solution of Example 2 was used as an adhesive between the part B 2 and the box 5.

When floated in a bath at a water temperature of 39 degrees, it dissolved while vigorously moving around the water surface, and the active ingredient was diffused into the bath.

In this example, since the box was formed in a hull form, it was possible to float effectively on water even if the constituent material of the hull form had a true specific gravity of 1 or more.

〔The invention's effect〕

Since the composite solid of the present invention has the above configuration,
Since it disintegrates while generating and propelling carbon dioxide while floating on the surface of the water, the compounded active ingredient is quickly diffused into water, and immediately exhibits an effective effect.

In addition, since the entire layered solid is water-soluble or water-disintegrable, no residue is generated, thereby preventing the drain port from being clogged, and eliminating the trouble of rearranging the residue.

[Brief description of the drawings]

FIG. 1 is a side view of a composite solid in which part A and part B are joined in Example 1; FIG. 2 is a side view of a composite solid in which a spiral groove is formed in Example 1; FIG. 3 is a bottom view of the composite solid material having a peripheral linear groove formed in Example 1, FIG. 4 is a side view of the composite solid material of Example 2, and FIG. 5 is a composite solid material of Example 3. It is a sketch of. 1 ... A part, 2 ... B part 3 ... C part

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Shigeaki Nagasaka 648, Yayoi-cho, Shizuoka-shi, Shizuoka Prefecture Inside Polar Chemical Industry Co., Ltd. (56) References JP-A-57-102814 (JP, A) JP-A-62- 81432 (JP, A) JP-A-2-145700 (JP, A) JP-A-3-101613 (JP, A) JP-A-61-141609 (JP, A) JP-A-63-98337 (JP, U) (58) Field surveyed (Int.Cl. ⁶ , DB name) C11D 17/00 A01N 25/16 A01N 25/34 A61K 7/50 C09K 3/00 110

Claims (7)

(57) [Claims] 1. A non-foamable molded part and a foamable powder molded part are joined, both of which are water-soluble or water-disintegrable, and at least either of them contains a necessary active ingredient. A composite solid having an overall apparent specific gravity of less than 1; 2. The composite solid according to claim 1, wherein the apparent specific gravity of the non-expandable molded portion is less than 1, and the apparent specific gravity of the expandable powder molded portion is greater than 1. 3. A water-soluble or water-collapsible foaming powder molding part and said powder molding part are joined to each other, and said water-soluble or water-soluble or water-floating water-floating substance which can float on a water surface while holding said powder molding part in water. A composite solid comprising: a water-disintegrable box; and at least one of the box and the foamable powder molded part contains an active ingredient capable of dispersing in water. 4. The non-foamable molded part is a water-soluble organic compound,
And / or an inorganic powder, wherein the foamable powder molding part is a solid bicarbonate and / or carbonate at room temperature, and furthermore, an organic acid and / or inorganic weak acid solid at room temperature. Claims 1 to 1 containing an effervescent component consisting of a salt and an acid.
3. The composite solid according to any one of 3. 5. The composite solid according to claim 1, wherein the non-foamable molded part and the foamable powder molded part are joined with a water-soluble polymer compound layer interposed therebetween. 6. A step A for forming a non-foamable molded part, a step B for forming a foamable powder molded part, and further comprising the obtained non-foamable molded part and foamable powder molded part. And a bonding step C, wherein the apparent overall specific gravity is less than 1; and at least one of the two steps, the step A and the step B, includes a step of containing an active ingredient in a molded portion to be obtained. In addition, the step A of molding the non-foamable molded part includes a step of die-molding a water-soluble organic compound and / or an inorganic powder which are solid at ordinary temperature into a molded article having a predetermined shape, a step of melt-molding, It comprises at least one of the three steps of press molding at a predetermined pressure. On the other hand, the step B of molding the expandable molded product is a bicarbonate and / or carbonate solid at room temperature, and furthermore, at room temperature. And solid organic acids and / or inorganic weak acids, such salts A method for producing a composite solid, which comprises a step of press-molding a powder mixture containing a foamable component composed of an acid and an acid at a specific pressure. 7. The composite solid according to claim 6, wherein the step of melt-molding is carried out while enclosing a large number of bubbles while stirring with a stirrer and adjusting the apparent specific gravity of the obtained non-foamable molded part to 0.5 to 0.9. Method of manufacturing a product.