JPS6233114A - Tableting method of foaming bath agent - Google Patents

Abstract

PURPOSE:To prevent trouble, e.g. capping or sticking phenomenon, in tableting without inhibiting the performance of a bath tablet, by using adipic acid and/or alkali metal salt thereof as a lubricant in tableting a foaming bath agent. CONSTITUTION:A foaming bath agent is tableted by using at least one of adipic acid and alkali metal salts thereof as a lubricant using, e.g. the following methods; A raw material mixture containing an organic acid, e.g. citric acid, and an inorganic acid salt, e.g. sodium carbonate, as a foaming principal components is first formed into granules having preferably about 32-100 mesh grain size in a dry granulating machine, and, as necessary, further sorting and grading the granules. About 1-10wt%, preferably 3-6wt% of the above- mentioned lubricant is then added and uniformly mixed with the granules and the resultant mixture is tableted according to the conventional method to give the aimed foaming bath agent. According to this method, the above-mentioned trouble can be prevented in tableting without inhibiting the performance by the lubricant.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a bath material that foams and dissolves in a bath, a so-called effervescent bath tablet (hereinafter simply referred to as a bath tablet).

Prior Art and Problems Known bath tablets usually contain organic acids such as citric acid, succinic acid, sinlic acid, and tartaric acid, and carbonates such as sodium carbonate, sodium hydrogen carbonate, potassium carbonate, and potassium hydrogen carbonate. It has a composition in which sodium sulfate, thorium chloride, boric acid, herbal medicines, oils and fats, fragrances, pigments, etc. are appropriately blended according to the desired bath effect. and,
In tabletting, the raw material mixture is directly compressed into tablets as it is, or a binder is added to the raw material mixture to make the tablets into fine particles, which are then compressed into tablets. As a binder, sodium cellulose silicate, sodium polyacrylate, methyl heptyl-O's, polyvinyl dirolidone, sodium alsenate, etc. are used to prevent foaming due to reaction with the main component. It is said to be preferable to use it in powder form and dry granulate the raw material formulation. however,
In conventional tabletting methods, when the tablet is removed from the mold (also called a mortar) after the tableting is completed, a part of the tablet peels off + Yaching phenomenon, and a part of the raw material mixture is removed during the compression process during tabletting. Continuous tableting is difficult because problems such as the slug-ink phenomenon, in which tablets adhere to the press die (also called a punch) and damage the tablet surface, are likely to occur. In order to solve these problems, we have developed a raw material blend containing stearic acid, calcium stearate, magnesium stearate, polyethylene glycol, benzoic acid, sodium benzoate, starch, talc, silico resin, etc. as lubricants. It is done by adding it to tablets. Although the use of such a lubricant somewhat alleviated the problems encountered during tableting, it was found that the performance as bath tablets was impaired. That is, depending on the type of lubricant, (a) it requires the use of stripes, which reduces the disintegration properties of bath tablets in the bath, and (i) it does not dissolve in water, causing cloudiness in the bath. No. 09 new problems have arisen, such as floating in an oily state on the surface of the bath, giving a feeling of discomfort, and (2) preventing the disappearance of bubbles generated from the bath tablets.

The present inventor has conducted various studies in view of the current situation, and has found that adipic acid and its alkali metal salts not only exhibit excellent effects as lubricants during the production of bath tablets, but also It was found that the performance as a bath tablet was not impaired. That is, the present invention provides a method for compressing foaming bath preparations, which comprises adding at least one of adipic acid and an alkali metal salt of adipic acid as a lubricant when tabletting the foaming bath preparations. Pertains to.

The bath tablet components other than the lubricant used in the present invention include: and other additives as necessary.

As the lubricant, at least one type of Ajihi:/Sarasu and its alkali metal salt is used. Alkali metal salts include sodium adipate, sodium hydrogen adipate,
Examples include potassium adipate and potassium hydrogen adipate.

The method of the present invention is carried out, for example, as follows. First, Ir1AI such as citric acid! A raw material mixture containing 1ll and an inorganic substance such as sodium carbonate as the main foaming ingredients, and other additives as required, is granulated using a dry granulator. The particle size of the granules is preferably about 32 to +00 mesh, and if necessary, the granules are selected and adjusted for particle size. Next, at least one of adipic acid and an alkali metal salt of adipic acid is added in a proportion of about 1 to 10% by weight, preferably about 3 to 6% by weight of the weight of the granules, mixed uniformly, and then constantly mixed. Compress the tablets in accordance with the law,
Obtain bath tablets.

According to the present invention, not only is it possible to prevent yapping and sticking jig during the production of tablets for bathing, but also the performance of the tablets for bathing is not inhibited by the lubricant used.

Examples and comparative examples are shown below to further clarify the characteristics of the present invention.

Examples 1 to 2 and Comparative Example 1 Component 03) was added and mixed to the granules (32 to +00 mesh) obtained from the prison components shown in Table 1, and the mixture was made to have a diameter of 35 mm and a thickness of 10 mm.
ff stone-shaped circular tablets were compressed. In addition, the numerical values shown in Table 1 indicate the heavy duty.

In Comparative Example 1 using talc as a lubricant, 4
In contrast, in Examples 1 and 2, normal continuous tableting of 1000 tablets or more was possible, and the defective rate was also significant. It decreased significantly.

Table 1 Examples 3 to 4 and Comparative Example 2 To the granules (32 to 100 mesh) obtained from the powder components shown in Table 2, the ingredients were added and mixed, and the diameter was 4Qfj.

It was compressed into convex circular tablets with a thickness of 2011 mm.

In Comparative Example 2 in which polyethylene glycol was used as a lubricant, the +yapping phenomenon occurred within a short time,
In addition, the strength of the tablets was not sufficient, resulting in large wear and tear. On the other hand, in Examples 3 and 4,! Even after compression, the cow settling phenomenon did not occur and tablets with excellent moldability were obtained.

Table 2 Reference Examples When each substance shown in Table 3 is used as a lubricant in place of the azide and J acid of Example 1, (a) Effect of imparting fluidity to the formulation before tableting, (b) Sticky prevention effect, (ζ)
Table 3 shows the effect of preventing cow yapping and (d') problems when the bath tablets are dissolved in hot water.

Table 3 - No effect, +: Slight effect, ++: Kana effect, +++: Significant effect.

(that's all) Agent: Patent attorney Miyoshi Eiji.

Proceedings ``11 Voluntary writing'' September 1985 11 EJ 1 Indication of the case 1985 Holder' [Application No. 172925 2 Name of the invention Method for tabletting effervescent bath additives 3 Relationship with the case to be amended ￥i Permission applicant Hitota Pharmaceutical Co., Ltd. 4 Representative Sawanotsuru Building (6521) 2-10 Hirano-cho, Higashi-ku, Osaka
Patent attorney Eiji Saegusa,...
.

□′ □′ 5 Date of amendment order °8. Re/Initiation 6 Subject of amendment Contents of amendment under [Detailed description of the invention] in w11m 1. The statement ``The inventor is'' on page 3, line 14 of the specification shall be corrected by 1 as follows.

``Means to resolve issues The inventor is

Claims (1)

[Claims] (1) A method for tabletting an effervescent bath agent, which comprises adding at least one of adipic acid and an alkali metal salt of adipic acid as a lubricant when tabletting the effervescent bath agent.