JPH08333236A - Bath agent - Google Patents

Abstract

PURPOSE: To obtain a solid bath agent having an excellent solubility, hardly broken, easily prepared and provided with a recessed part. CONSTITUTION: The bath agent blended with 5-80wt.% carbonate salt and 10-80wt.% organic acid for imparting a foaming property, comprises forming a recessed part in the middle of right surface side thereof. The depth of the recessed part is 50-80% thickness of the bath agent and the volume of the recessed part is 1-3% of the volume of the agent, its planer shape is almost a square having 40-50mm sides or a circle having 40-50mm diameter, its thickness is 10-20mm, the diameter of the opening edge part of the recessed part is 20-25mm) and the diameter at the middle part in the depth direction is 5-15mm, and the shape of the inside wall is the convex curved surface of an approximately reversed truncated cone shape. As the bottom of the recessed part becomes a perforated hole during the dissolution in the warm bath water and the agent is dissolved from the outer peripheral surface and the wall surface of the perforated hole, an excellent solubility is manifested. Just putting the agent into the warm bath water and taking a bath after its dissolution is satisfactory, and it is preferable that the warm bath water becomes pH4-6. 5 at that time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solid bath agent which is used by being dissolved in a bath water (water), and more specifically, a bath agent which has excellent solubility, is hard to break and is easy to manufacture. Regarding

[0002]

2. Description of the Related Art Conventionally, as a solid bath agent used by being dissolved in a bath water, there is a bath agent 3 having a substantially rectangular parallelepiped shape as shown in FIG. The bath agent contains an active ingredient such as a carbon dioxide gas-generating component, generates carbon dioxide gas when used, promotes blood circulation, fatigue, stiff shoulders, low back pain, chills, neuralgia, rheumatism,
It has an effect on hemorrhoids, heat rashes, burns, roughness, cracks, cracks, rashes, acne and the like. In addition, such a bath agent is required to have excellent solubility in order to fully exhibit the above-mentioned effects. As means for improving the above-mentioned solubility, it is conceivable to change the shape such as increasing the surface area of the bath agent, for example, to provide holes in the bath agent, but the bath agent provided with holes is It has drawbacks such as being fragile in structure and difficult to manufacture.

Therefore, it is an object of the present invention to provide a bath preparation having excellent solubility, being hard to break and easy to manufacture.

[0004]

Means for Solving the Problems As a result of intensive studies, the present inventors have found that the above objects can be achieved by providing recesses in the above solid bath agent.

The present invention has been made based on the above findings, and in a solid bath agent which is used by being dissolved in a bath water, a recess is provided in the center of the surface side of the bath agent. The agent is provided.

[0006]

The bath agent of the present invention is excellent in dissolution since it is dissolved not only in the outer peripheral surface but also in the wall surface of the through hole while the bottom of the recess becomes a through hole during the dissolution in the bath water. Exert its abilities.

The bath agent of the present invention is a composition in which a carbonate and an organic acid are mixed in order to impart foamability, and the carbonate and the organic acid can be any one generally used in a bath agent. There is no particular limitation. Here, examples of the carbonate include sodium hydrogencarbonate, sodium carbonate, potassium hydrogencarbonate, potassium carbonate, calcium carbonate, magnesium carbonate, sodium sesquicarbonate, and the like. The above may be used in combination. The amount of the above carbonate compound is 5 to 5 in the total composition.
It is preferably 80% by weight, particularly preferably 10 to 60% by weight. Examples of the organic acid include citric acid, succinic acid, fumaric acid, malic acid, tartaric acid, etc. These organic acids may be used alone or in combination of two or more. The compounding amount of the organic acid is preferably 10 to 80% by weight, and particularly preferably 15 to 60% by weight based on the total composition.

In addition to the above essential components (carbonate and organic acid), the bath preparation of the present invention may contain various optional components usually used in bath preparations. Examples of the optional component include the following (a) to (d). (A) Excipients Monosaccharides such as glucose, sucrose, lactose, and sorbit, disaccharides, starches, and the like. (A) Binders Dextrin, carrageenan, cellulose derivatives such as methyl cellulose, polyethylene glycol and the like. (C) Disintegrants Starch, carboxymethyl cellulose, etc. (D) Others Lubricants such as magnesium stearate, colorants such as tar dyes, adsorbents, neutralizing agents, flavoring agents, flavoring agents, and other components necessary for formulation.

Since the bath agent of the present invention is a tablet, it may be added to the bath water and dissolved before bathing. Here, the pH of the bath water when the bath agent of the present invention is added to the bath water is preferably weakly acidic (particularly 4 to 6.5). This is because under weakly acidic conditions, carbon dioxide generated by the reaction between a carbonate and an organic acid dissolves in water as it is, and has a blood circulation promoting action.

[0010]

EXAMPLE An example of the bath agent of the present invention will be described below with reference to the drawings. 1 is a perspective view showing an embodiment of the bath agent of the present invention, FIG. 2 (a) is a plan view of the bath agent shown in FIG. 1, and FIG. 2 (b) is shown in FIG. FIG. 2 is a side view of the bath agent, and FIG. 2C is a sectional view of the bath agent shown in FIG.

As shown in FIG. 1, the bath agent 1 of this embodiment
Has a structure in which a concave portion 2 is provided in the center of the front surface side.

The depth c of the recess 2 is preferably 50 to 80% of the thickness b of the bath agent 1, and the volume of the recess 2 is 1 to 3 of the volume of the bath agent 1. % Is preferred. If the depth c of the concave portion 2 is less than 50% of the thickness b of the bath agent 1, it becomes difficult to dissolve, and if it exceeds 80%, the production by tableting tends to be difficult, which is not preferable. Further, when the volume of the recess 2 is less than 1% of the volume of the bath agent 1, the dissolution time becomes long, and when it exceeds 3%, it tends to be broken, which is not preferable.

The plane shape of the bath agent 1 is one side a.
Is preferably a square of 40 to 50 mm or a diameter of 40 to
It has a circular shape of 50 mm, and its thickness b is preferably 10 to 2
It is 0 mm. In addition, the diameter of the opening edge portion of the recess 2 is preferably 20 to 25 mm, the diameter of the central portion in the depth direction thereof is preferably 5 to 15 mm, and the inner wall thereof is preferably a convex curved surface. It has a substantially inverted truncated cone shape.

The bath agent of the present invention is not limited to the above-mentioned examples, and it goes without saying that its shape, dimensions and the like can be appropriately changed without departing from the object of the present invention.

The bath agent 1 of the present invention can be easily manufactured in substantially the same manner as the conventional bath agent 3 having a substantially rectangular parallelepiped shape shown in FIG. That is, the above-mentioned bath agent 3 is manufactured by using a die, an upper punch and a lower punch having flat surfaces to put the raw material components of the bath agent 3 into a die and pressing them with the upper punch and the lower punch. The bath preparation 1 of the present invention is also produced in the same manner as the above-mentioned bath preparation 3 except that an upper punch having a convex portion corresponding to the concave portion of the bath preparation 1 is used as the upper punch used when producing the bath preparation 3. can do. Thus, the bath agent 1 of the present invention
Can be manufactured without the need for special equipment.

[0016]

The bath agent of the present invention has excellent solubility, is hard to break and is easy to manufacture.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the bath agent of the present invention.

2 (a) is a plan view of the bath agent shown in FIG. 1, and FIG. 2 (b) is a side view of the bath agent shown in FIG.
2C is a cross-sectional view of the bath agent shown in FIG. 1 taken along the line AA.

FIG. 3 is a perspective view showing a conventional bath agent.

[Explanation of symbols]

 1 Bath agent of this example 2 Recessed portion 3 Conventional bath agent

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hidenori Wan 2-1-3 Bunka, Sumida-ku, Tokyo Kao Corporation Stock Research Institute

Claims (3)

[Claims] 1. A solid bath agent which is used by being dissolved in a bath water, wherein a recess is provided in the center of the surface side of the bath agent. 2. The bath according to claim 1, wherein the depth of the recess is 50 to 80% of the thickness of the bath agent, and the volume of the recess is 1 to 3% of the volume of the bath agent. Agent. 3. The planar shape is a substantially square having a side of 40 to 50 mm or a circle having a diameter of 40 to 50 mm, and a thickness of 1
The diameter of the opening edge is 20 mm.
The diameter of the central portion in the depth direction is 5 to 15 mm, and the inner wall is a substantially inverted truncated cone shape having a convex curved surface.
Or the bath agent described in 2.