JP3936717B2 - Manufacturing method of solid bath containing tangible material and humidification / cooling device - Google Patents

Description

  The present invention relates to a method for producing a solid bath containing a tangible material such as a toy and a humidifying / cooling device used in the production method, and more particularly, to prevent deformation of the tangible material and to provide a solid bath containing a tangible material. The present invention relates to a production method capable of industrially efficiently producing an agent by pressure molding and a humidification / cooling device that can be effectively used in the production method.

2. Description of the Related Art Conventionally, a solid bath agent that dissolves with foaming due to an acid-base reaction when introduced into bath water is widely known. The solid bath agent contains an organic acid and a carbonate as a bath agent raw material in order to cause the acid-base reaction. Since a solid bath containing such an organic acid and carbonate usually reacts due to moisture in the air, it is necessary to sufficiently prevent contact with moisture including moisture during its production and storage. There is.
The solid bath agent is usually produced industrially by a method in which a powder bath raw material is pressure-molded at a high pressure of 100 kgf / cm ² or more using a tableting molding machine. Such a solid bath agent molded under pressure at a high pressure has a high surface hardness even after production and is excellent in handleability.
By the way, in recent years, it has been desired to impart amusement and the like to bathing agents, and bathing agents having various amusements have been proposed. For example, in Japanese Patent Application Laid-Open No. 10-306021, Japanese Patent Application Laid-Open No. 50-6716, Japanese Patent Application Laid-Open No. 63-13403, or Japanese Patent Application Laid-Open No. 9-249551, a solid bath containing a toy, a plant, or a printed material is provided. Proposed. In these gazettes, a method is proposed in which a tangible material is mixed with a bath salt raw material and then pressure-molded. However, in the above-described conventionally known pressure molding method using high pressure, when a tangible object having a certain size, such as a toy, is included, significant deformation occurs and it cannot be commercialized. In fact, the solid bath preparation to be produced can only be encapsulated if it is a tangible material that is not easily affected by deformation due to the high pressure, such as dried plants and printed matter.
Thus, as a method of enclosing a toy or the like that easily deforms in a solid bath agent, a method of reducing the pressure by pressure molding is conceivable. However, since the pressure at which the toy or the like does not deform is several kgf / cm ² or less, it is extremely difficult to mold the solid bath agent itself into a desired shape, and even if molding is possible, It is very fragile, and its management is complicated industrially, so it cannot be mass-produced and is extremely difficult to commercialize.
Moreover, although the method of manufacturing the solid bath agent in which the toy etc. were included by manual work without using a press molding machine is also considered, there exists a problem that mass production cannot be performed.

An object of the present invention is to suppress or prevent deformation of a tangible object by incorporating a solid bathing agent containing water-insoluble tangible material that can be deformed by a predetermined pressure such as a toy and having foaming due to an acid-base reaction when dissolved. Another object of the present invention is to provide a method for producing a tangible-containing solid bath that can be efficiently mass-produced industrially by a pressure molding method.
Another object of the present invention is to continuously and efficiently perform the step (E) of humidifying the surface layer of the molded product and the step (F) of cooling the molded product in carrying out the production method of the present invention. An object of the present invention is to provide a humidifying / cooling device that can be well implemented.
According to the present invention, the step (A) of preparing a wet powder raw material by mixing a powder raw material containing an organic acid and carbonate as a foaming component, and a binding liquid, and water that can be deformed by a predetermined pressure. The insoluble tangible material and the wet powder raw material prepared in step (A) are placed in a container for pressure molding so that the tangible material is contained in the wet powder raw material (B), In step B), the tangible material and the wet powder raw material housed in the container are pressure-molded with a pressure of 0.5 to 10 kgf / cm ² using a mold having a predetermined shape, and step (C). The step (D) of taking out the pressure-molded molded product from the container, the step (E) of humidifying the surface layer of the obtained molded product, and the step (E) to 5 ° C. or lower And a method for producing a tangible-containing solid bath containing at least a step (F) of cooling. Provided.
Further, according to the present invention, there is provided a humidifying / cooling device for use in the method for producing the tangible material-containing solid bath agent, the conveying means for conveying the pressure-formed molded product on a line, and the humidifying the molded product. Humidifying means, and cooling means for cooling the molded product,
The humidifying means includes a humidifying tunnel structure having a carry-in port and a carry-out port for a molded product, and a humidifier capable of humidifying a predetermined space in the humidifying tunnel structure,
The cooling means comprises a cooling tunnel structure having a carry-in port and a carry-out port for a molded product, and a cooler capable of cooling a predetermined space in the cooling tunnel structure, and the cooling tunnel structure is formed by the cooler. Having at least one flexible cold air shielding means for holding the cold air in a predetermined space to be cooled and allowing the molded product to pass therethrough on each of the carry-in side and the carry-out side;
There is provided a humidifying / cooling device in which the humidifying means and the cooling means are arranged in this order on the line of the conveying means.

FIG. 1 is a schematic view for explaining the structure of the humidifying / cooling device of the present invention.
Preferred Embodiments of the Invention The present invention will be described in more detail below.
In the method for producing a tangible material-containing solid bath agent of the present invention, first, a powder raw material containing an organic acid and carbonate as foaming components and a binding liquid material are mixed to prepare a wet powder raw material (A )I do.
The organic acid and carbonate contained in the powder raw material are formulated with the expectation of the action of rapidly disintegrating and dissolving the bath agent raw material of the solid bath agent in the bath water, and further the warm bath effect based on the carbon dioxide gas generated by the dissolution. it can. Examples of the organic acid include tartaric acid, fumaric acid, citric acid, succinic acid, and adipic acid. Examples of the carbonate include sodium carbonate, sodium hydrogen carbonate, sodium sesquicarbonate, and potassium salts thereof. When blending organic acids and carbonates, care must be taken that the bathing agent ingredients are substantially free of moisture. The mixing ratio of the organic acid and the carbonate is preferably 1: 1 or a ratio close to this by weight ratio.
The powder raw material may contain components other than organic acids and carbonates. For example, specific gravity adjusting agents, enzymes, surfactants, water-soluble fragrances, oil-soluble fragrances, pigments, various medicinal effect ingredients, hot spring action ingredients, or mixtures thereof may be mentioned. Each blending ratio can be appropriately determined according to the desired purpose.
Examples of the specific gravity adjuster include anhydrous sodium sulfate. The content ratio of the specific gravity adjusting agent is the ratio of sedimentation in the bath water immediately after the obtained tangible material-containing solid bath agent is added to the bath water, that is, the ratio in which the specific gravity of the solid bath agent is higher than the specific gravity of the bath water. Is preferred. Moreover, an enzyme, surfactant, a pigment | dye, various medicinal effect components, and a hot spring action component can be suitably selected from well-known components etc. according to the desired objective.
The powder raw material can be prepared by a method of mixing and stirring each component. At this time, for example, liquid components such as organic acids and fragrances may be appropriately selected in terms of the mixing ratio, mixing order, etc., and mixed with other powder components so as to finally become powder raw materials. It is preferable to adjust the particle size of the obtained powder raw material uniformly. Usually, the particle size can be adjusted by passing through a 0.5 to 5.0 mm mesh sieve.
The binding liquid material is a component that enables molding of the powder raw material even under pressure molding at a low pressure, which will be described later, and can suppress and prevent cracking due to impact of the obtained solid bath agent, It is a component that is not necessarily blended in a conventional bath powder powder material for pressure molding at a high pressure of 100 kgf / cm ² or more. The binding liquid includes a binder and a solvent for the binder.
Examples of the binder include polyethylene glycol (PEG), polypropylene glycol, sorbitol, mannitol, glucose, sucrose, or a mixture thereof. Particularly preferred is the use of PEG. The average molecular weight of PEG is preferably 500 to 3700 in terms of good moldability. Examples of the PEG having the desired molecular weight include a commercially available product or a mixture of commercially available products.
Examples of the solvent for the binder include ethylene glycol, propylene glycol, 1,3-butylene glycol, diethylene glycol, dipropylene glycol, glycerin, and pentaerythritol. In particular, as a solvent for PEG, dipropylene glycol and / or 1,3-butylene glycol are preferable.
The wet powder raw material can be prepared by mixing and stirring the powder raw material and the binding liquid material at a desired mixing ratio. At this time, it is also possible to include components other than the powder raw material and the binding liquid within a range that does not impair the desired effect of the present invention. The obtained wet powder raw material is preferably adjusted to have a uniform particle size, and can usually be adjusted by passing it through a 0.5 to 5.0 mm mesh sieve. Here, the wet powder raw material means a powder in a state where the powder form is maintained and the surface is wetted by the binding liquid material.
The mixing ratio of the powder raw material and the binding liquid material in preparing the wet powder raw material can be appropriately selected according to the type of each raw material, but the powder raw material: binding liquid material is 1: 0. About 05-1 is preferable.
In the production method of the present invention, the water-insoluble tangible material that can be deformed by a predetermined pressure and the wet powder raw material prepared in step (A) are then wetted in a container for pressure molding. A step (B) is performed so as to be included in the powder raw material.
Examples of the water-insoluble tangible material that can be deformed by the predetermined pressure include plastic toys that are not deformed and completely restored when pressure-molded by a pressure exceeding 10 kgf / cm ² . The size and shape of the tangible object are not particularly limited. The size of the tangible object depends on the size of the obtained solid bath so that the thickness between the outer surface of the tangible object and the outer surface of the obtained solid bath is preferably 1 cm or more. Is preferably determined. The specific gravity of the tangible material is not particularly limited, but is preferably less than the specific gravity of the bath water so that the surface of the bath water floats when the solid bath agent dissolves.
In the step (B), the container for pressure molding may be any container that can be pressure-molded, and the shape thereof is not particularly limited.
The amount of the wet powder raw material to be put in the container is preferably the total amount of the wet powder raw material for one of the obtained solid bath agents so as not to complicate the process.
In the step (B), the tangible material and the wet powder raw material are placed in the container without any particular limitation as long as the tangible material is contained in the wet powder raw material. It can implement by the method etc. which select suitably.
In the production method of the present invention, next, the step (C) of pressure-molding the tangible material and the wet powder raw material contained in the container in the step (B) with a specific low pressure using a mold having a predetermined shape. Do.
The pressure molding in the step (C) can be performed by selecting a mold such as a mold that can be shaped according to the shape of the obtained molded product and pressurizing from one direction or two directions. Examples of the shape of the molded product include an egg shape, an ellipse shape, a cube shape, a triangular prism, a star column, and a complicated shape such as a doll.
The pressurization can usually be performed in one step. However, when the tangible material to be included is a complicated shape, the first step is performed so that no cavity is formed between the tangible material and the wet powder raw material. The pressurization can be performed by two or more stages of pressurization performed at a lower pressure than the pressurization of the second transition.
The pressurization in the step (C) can be usually performed at 0.5 to 10 kgf / cm ² , preferably 1 to 5 kgf / cm ² . If the pressure exceeds 10 kgf / cm ² , deformation of the contained tangible material cannot be suppressed / prevented, and if it is less than 0.5 kgf / cm ² , molding is difficult.
In the production method of the present invention, next, the step (D) of taking out the molded product pressure-molded in the step (C) from the inside of the container is performed. The take-out method is not particularly limited, but the molded product obtained is very fragile, so that it needs to be handled with care in the next step.
In the production method of the present invention, next, the step (E) of humidifying the surface layer of the obtained molded product is performed, and then the step (F) of cooling the molded product to 0 ° C. or lower is performed.
Since the molded product taken out from the container in the step (D) contains an organic acid and a carbonate, the surface layer can be made a neutral salt by humidification in the step (E). Thus, by making the surface layer into a neutral salt, the surface hardness of the very brittle molding can be quickly improved, and the organic acid and the inside of the molding can be cooled by cooling in the subsequent step (F). While preventing the reaction of carbonate and promoting further improvement of the surface hardness, excess water due to humidification in the step (E) can be quickly removed to facilitate subsequent handling. Further, surface deterioration of the molded product due to contact with air during subsequent drying or storage can be effectively suppressed / prevented.
In step (E), humidification is performed by, for example, a method of spraying mist water generated by an ultrasonic humidifier or the like, a method of placing a molded product on a belt conveyor, and passing the interior of the mist water atmosphere at a predetermined speed. It can be carried out. The humidification is usually preferably performed for 10 seconds to 2 minutes so that the surface layer of the molded product becomes a neutral salt.
The cooling in the step (F) can be performed at a temperature of about 5 ° C. or less, usually +5 to −10 ° C., preferably +2 to −5 ° C., particularly preferably about 0 to −5 ° C. The cooling time is preferably longer, but is usually about 1 to 30 minutes, preferably about 2 to 20 minutes when considering production efficiency. Following the step (E), the cooling can be performed, for example, by a method in which a molded product is placed on a belt conveyor and passed through a cooling chamber at a predetermined speed.
Even if the step (E) for cooling is performed without performing the step (E) of humidifying the surface to make a neutral salt, the surface hardness is hardly improved. On the other hand, when the order of the step (E) and the step (F) is reversed, a desired effect cannot be expected.
In the production method of the present invention, a desired solid bath agent can be produced by the steps (A) to (F). However, immediately after the production, the contained binder and the like are not completely dried, so that time elapses. As the hardness increases. Therefore, although a drying process can also be performed after the said process (F), since a certain amount of hardness is provided to the molding by the said processes (E) and (F), a process (without performing a drying process in particular) A step of packaging the molded product after F) can also be performed. The packaging can be carried out, for example, by packaging a solid bath obtained by a bag-like packaging material that is light-impermeable and sealable or has air permeability. Examples of the packaging material include bag-like materials such as aluminum foil and bag-like materials having pores. Alternatively, the solid bath agent can be put into a bag-shaped packaging material, and the pressure can be reduced by a pressure reducing device used in the food field, and the package can be sealed and packaged.
In addition, before the packaging, in order to effectively prevent cracks and defects during storage, transportation and use of the obtained solid bath agent, the solid bath agent can be individually subjected to a shrink treatment. The shrink process can be performed using a known material.
In the production method of the present invention, steps or operations other than the above steps may be included in order to further improve desired effects and other effects within a range where the desired object of the present invention is not impaired.
The tangible material-containing solid bathing agent obtained by the production method of the present invention disperses and dissolves the bathing agent raw material around the tangible material in the bath water by adding it to the bath water. A mode that appears in the bath or on the bath surface is preferred.
The humidification / cooling device of the present invention is a humidifier for performing the step (E) and the step (F) on the pressure-molded product taken out in the step (D) in the production method of the present invention. -Cooling device. Although the preferable aspect of the humidification / cooling apparatus of this invention is demonstrated with reference to drawings below, the apparatus of this invention is not limited to this.
FIG. 1 is a schematic view showing an embodiment of a humidifying / cooling device 10 according to the present invention. The device 10 is a belt conveyor 11 as a conveying means for conveying a pressure-formed molded product 18 on a line. A humidifying means comprising a humidifying tunnel structure 12 and a humidifier 14 for humidifying the molded product 18; and a cooling tunnel structure 15 and a cooler 17 for cooling the molded product 18 carried out from the humidifying means. Prepare.
The humidifying tunnel structure 12 has a carry-in port 12 a and a carry-out port 12 b for the molded product 18. Here, a flexible plastic sheet as a moisture shielding means may be hung from the ceiling surface of the humidifying tunnel structure 12 inside the carry-in entrance 12a and the inside of the carry-out exit 12b. These sheets are preferably provided with a plurality of slits from the bottom to the top in order to allow the molded product 18 to pass through and to restore the original form after the passage and to keep moisture in a predetermined space. . Such a sheet as a moisture blocking means is not always preferable to be provided because water droplets adhere to the moisture and may exhibit an undesirable effect on the molded product 18.
The humidifier 14 can humidify the inside of the humidifying tunnel structure 12 to a desired humidified state, and usually has a control unit that can control the humidification rate. The humidifier 14 is preferably an ultrasonic humidifier that generates atomized water at room temperature or lower.
The cooling tunnel structure 15 has a carry-in port 15a and a carry-out port 15b for the molded product 18, and each of the inside of the carry-in port 15a and the inside of the carry-out port 15b is made of flexible plastic as a cold air shielding means. The sheet 16 is suspended from the ceiling surface of the cooling tunnel structure 15. These sheets 16 are provided with a plurality of slits 16a from the lower side to the upper side for allowing the molded product 18 to pass therethrough and restoring the original form after the passage and holding the cool air in a predetermined space to be described later. Yes. In the example of FIG. 1, one sheet 16 is provided on each of the inside of the carry-in port 15a and the inside of the carry-out port 15b. However, in order to more efficiently block the cold air, the carry-in port 15a is provided. Preferably, a plurality of sheets 16, for example, three sheets 16 inside the carry-in port 15a and four sheets 16 inside the carry-out port 15b are provided on the inside and the carry-out port 15b, respectively. .
The cooler 17 can cool the inside of the predetermined space 15c surrounded by the ceiling surface and side surfaces of the cooling tunnel structure 15 and the sheet 16 to a desired cool air state, and can usually control the cooling temperature. Part. The cooler 17 is preferably an apparatus having a cooling capacity capable of maintaining the inside of the predetermined space 15c at about +5 to −10 ° C.
In the humidification / cooling device 10 shown in FIG. 1, the humidifying tunnel structure 12 and the cooling tunnel structure 15 are arranged separately on the belt conveyor 11, and the distance of the separation can be selected as appropriate, It is also possible to place them in contact without being separated.
Next, the operation of the humidifying / cooling device 10 shown in FIG. 1 will be described.
In the production method of the present invention, the molded product 18 obtained by carrying out the above steps (A) to (D) is transported on the belt conveyor 11 of the humidification / cooling device 10, and is first preliminarily used by the humidifier 14. It passes through the inlet 12a of the humidifying tunnel structure 12 maintained in a desired moisture state, passes through the structure 12, and is carried out from the outlet 12b. At this time, by adjusting the speed of the belt conveyor 11 and the length of the humidifying tunnel structure 12 and adjusting the passage time of the molded article 18 passing through the structure 12, the surface layer of the molded article 18 is set to a predetermined level. It can be a layer of neutral salt.
Then, the humidified molded article 18 passes through the inlet 15a and the sheet 16 of the cooling tunnel structure 15 and proceeds into the predetermined space 15c. The inside of the predetermined space 15c is previously held at a desired temperature of 5 ° C. or less by the cooler 17. When the molded product 18 passes through the sheet 16, the predetermined space 15c temporarily becomes an open system. However, after the passage, the sheet 16 is restored and the space 15c is substantially returned to the closed system. Is efficiently maintained at a desired cooling temperature state. By adjusting the speed of the belt conveyor 11 and the length of the predetermined space 15c, and adjusting the passage time of the molded product 18 passing through the predetermined space 15c, the surface layer of the molded product 18 is brought into a desired cooling and drying state, The surface hardness of the molded product 18 can be improved efficiently.
The molded product 18 having improved surface hardness passes through the sheet 16 on the carry-out port 15 b side and the carry-out port 15 b and is carried out of the cooling tunnel structure 15.
In the humidification / cooling device 10 of the present invention, a shrink device and / or packaging device for the molded product 18 can be installed behind the cooling tunnel structure 15 as desired.

EXAMPLES Hereinafter, although an Example demonstrates this invention further in detail, this invention is not limited to these.
In each example, the humidification / cooling device 10 shown in FIG. 1 was used as the humidification chamber and the cooling chamber through which the molded product passes.

6.7 parts by weight of PEG having an average molecular weight of 500 and 6.7 parts by weight of PEG having an average molecular weight of 3700 were dissolved in 6.7 parts by weight of dipropylene glycol at a temperature of 60 ° C. to prepare a PEG solution having an average molecular weight of 2100. Next, 27.2 parts by weight of citric acid, 27.2 parts by weight of sodium carbonate, 25.3 parts by weight of anhydrous sodium sulfate, 0.1 part by weight of pigment and 0.1 part by weight of fragrance are mixed and stirred, A wet powder material was prepared.
The obtained wet powder raw material and plastic toy were put in a container of a pressure molding machine, pressed at a pressure of 3 kgf / cm ² and molded into an egg mold, and the molded product was taken out from the container of the pressure molding machine. . Next, on the belt conveyor, a device is prepared in which a humidifying chamber made into a mist water atmosphere by an ultrasonic humidifier and a cooling chamber controlled at −2 to −5 ° C. are arranged in series. The molded product thus taken out was placed and passed through a humidifying chamber and a cooling chamber to produce a solid bath containing tangible material. At this time, the passage time in the humidification chamber was 1 minute, and the passage time in the cooling chamber was 6 minutes.
The obtained solid bath agent had a markedly improved surface hardness as compared with the molded product before passing through the humidification chamber and the cooling chamber, and the surface was covered with a neutral salt layer.
Next, the obtained solid bath agent was subjected to a shrink treatment by a conventional method, and then placed in a bag made of aluminum foil having pores and stored at room temperature for one month. After 1 month, the bag was opened and compared with the odor and color at the time of manufacture. As a result, almost no change was observed. Moreover, when this solid bath was poured into the bath water, it submerged in the bath water, and after the foaming of carbon dioxide gas continued for several minutes, the toy surfaced on the bath water surface. No deformation was found in this toy.

9.5 parts by weight of PEG having an average molecular weight of 500 and 9.5 parts by weight of PEG having an average molecular weight of 3700 were dissolved in 1.1 parts by weight of dipropylene glycol at a temperature of 60 ° C. to prepare a PEG solution having an average molecular weight of 2100. Next, 27.2 parts by weight of succinic acid, 27.2 parts by weight of sodium hydrogen carbonate, 25.3 parts by weight of anhydrous sodium sulfate, 0.1 part by weight of dye and 0.1 part by weight of fragrance were mixed and stirred. A wet powder raw material was prepared.
The egg-shaped molded product was obtained in the same manner as in Example 1 except that the obtained wet powder raw material and plastic toy were placed in a container of a pressure molding machine and the pressure was changed to 4 kgf / cm ^2. The tangible-containing solid bathing agent was produced by performing chambering and cooling in the same manner as in 1.
The obtained solid bath agent had a markedly improved surface hardness as compared with the molded product before passing through the humidification chamber and the cooling chamber, and the surface was covered with a neutral salt layer.
Next, the obtained solid bath agent was subjected to a shrink treatment by a conventional method, and then placed in a bag made of aluminum foil having pores and stored at room temperature for 3 months. As a result of opening the bag after 3 months and comparing it with the odor and color at the time of manufacture, almost no change was observed. Moreover, when this solid bath was poured into the bath water, it submerged in the bath water, and after the foaming of carbon dioxide gas continued for several minutes, the toy surfaced on the bath water surface. No deformation was found in this toy. A water-soluble wet powder bath agent raw material was prepared.

10.0 parts by weight of PEG having an average molecular weight of 500 was dissolved in 10.1 parts by weight of dipropylene glycol at a temperature of 60 ° C. to prepare a PEG solution. Next, 13.6 parts by weight of citric acid, 13.6 parts by weight of succinic acid, 26.2 parts by weight of sodium hydrogen carbonate, 26.3 parts by weight of anhydrous sodium sulfate, 0.1 part by weight of pigment and 0.1 part by weight of fragrance The PEG solution was mixed and stirred to prepare a wet powder material.
The obtained wet powder raw material and plastic toy were put in a container of a pressure molding machine, and an egg-shaped molded product was obtained in the same manner as in Example 1 except that the pressure was changed to 1.3 kgf / cm ² . In the same manner as in Example 1, chambering and cooling were performed to produce a tangible material-containing solid bath.
The obtained solid bath agent had a markedly improved surface hardness as compared with the molded product before passing through the humidification chamber and the cooling chamber, and the surface was covered with a neutral salt layer.
Next, the obtained solid bath agent was subjected to a shrink treatment by a conventional method, and then placed in a bag made of aluminum foil having pores and stored at room temperature for 6 months. After 6 months, the bag was opened and compared with the odor and color at the time of manufacture. As a result, almost no change was observed. Moreover, when this solid bath was poured into the bath water, it submerged in the bath water, and after the foaming of carbon dioxide gas continued for several minutes, the toy surfaced on the bath water surface. No deformation was found in this toy. A water-soluble wet powder bath agent raw material was prepared.

7.7 parts by weight of PEG having an average molecular weight of 500 and 7.7 parts by weight of PEG having an average molecular weight of 3700 were dissolved in 4.7 parts by weight of dipropylene glycol at a temperature of 60 ° C. to prepare a PEG solution having an average molecular weight of 2100. Next, 27.2 parts by weight of tartaric acid, 27.2 parts by weight of sodium carbonate, 25.3 parts by weight of anhydrous sodium sulfate, 0.1 part by weight of the dye and 0.1 part by weight of the fragrance were mixed and stirred, and wetted. A powder raw material was prepared.
The obtained wet powder raw material and plastic toy were put into a container of a pressure molding machine, and an egg shaped molded product was obtained in the same manner as in Example 1 except that the pressure was changed to 1.5 kgf / cm ² . In the same manner as in Example 1, chambering and cooling were performed to produce a tangible material-containing solid bath.
The obtained solid bath agent had a markedly improved surface hardness as compared with the molded product before passing through the humidification chamber and the cooling chamber, and the surface was covered with a neutral salt layer.
Next, the obtained solid bath agent was subjected to a shrink treatment by a conventional method, and then placed in a bag made of aluminum foil having pores and stored at room temperature for 6 months. After 6 months, the bag was opened and compared with the odor and color at the time of manufacture. As a result, almost no change was observed. Moreover, when this solid bath was poured into the bath water, it submerged in the bath water, and after the foaming of carbon dioxide gas continued for several minutes, the toy surfaced on the bath water surface. No deformation was found in this toy.

Claims (8)

A step of preparing a powder raw material containing an organic acid and a carbonate as a foamable component, and a wet powder raw material obtained by mixing a binding liquid;
A step of placing a water-insoluble tangible material that can be deformed by a predetermined pressure and the wet powder raw material prepared in step (A) into a container for pressure molding so that the tangible material is included in the wet powder raw material. (B) and
A step (C) of pressure-molding the tangible material and wet powder raw material contained in the container in the step (B) with a pressure of 0.5 to 10 kf / cm ² using a mold having a predetermined shape;
A step (D) of taking out the molded product pressure-molded in the step (C) from the container;
A step (E) of humidifying the surface layer of the obtained molded product;
A process for producing a tangible material-containing solid bath containing a step (E) followed by a step (F) of cooling the molded product to 5 ° C. or lower. The process according to claim 1, wherein the powder raw material used in the step (A) contains anhydrous sodium sulfate, and the blending ratio of the anhydrous sodium sulfate is adjusted so that the specific gravity of the obtained solid bath agent is higher than the specific gravity of the bath water. . The manufacturing method according to claim 1, wherein the humidification in the step (E) is performed using an ultrasonic humidifier. The manufacturing method according to claim 1, wherein the cooling in the step (F) is performed at +5 to -10 ° C for 1 to 30 minutes. A humidifying / cooling device used in the manufacturing method according to claim 1, wherein a conveying means for conveying a pressure-formed molded article on a line, a humidifying means for humidifying the molded article, and the molded article are cooled. Cooling means,
The humidifying means comprises a humidifying tunnel structure having a carry-in port and a carry-out port for a molded article, and a humidifier capable of humidifying the humidifying tunnel structure,
The cooling means comprises a cooling tunnel structure having a carry-in port and a carry-out port for a molded product, and a cooler capable of cooling a predetermined space in the cooling tunnel structure, and the cooling tunnel structure is formed by the cooler. Having at least one flexible cold air shielding means for holding the cold air in a predetermined space to be cooled and allowing the molded product to pass therethrough on each of the carry-in side and the carry-out side;
A humidifying / cooling device in which the humidifying means and the cooling means are arranged in this order on a line of the conveying means. The humidifying / cooling device according to claim 5, wherein the humidifier is an ultrasonic humidifier. The humidification / cooling device according to claim 5, wherein the cooling tunnel structure has a plurality of the cold air shielding means on each of the carry-in port side and the carry-out port side. 6. The humidifying / cooling device according to claim 5, wherein the cold air blocking means is a flexible plastic sheet suspended from the ceiling surface of the cooling tunnel structure and provided with a plurality of slits from below to above.

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