JP2016037484A - Bath agent - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bath agent that is excellent at improving carbon dioxide concentrations in a short time.SOLUTION: A bath agent comprises a water-soluble film, and a deaerated carbon dioxide producing agent coated with the water-soluble film. The carbon dioxide producing agent contains particles capable of passing through a sieve with an opening of 4.0 mm by 80 mass% or more.SELECTED DRAWING: None

Description

  The present invention relates to a bath agent.

  As a method for generating carbon dioxide gas in bath water, a method in which a bathing agent in the form of tablets, powder, granules, etc. is poured into the bath water, a method using a carbon dioxide generator, etc. are generally known. ing. In particular, in the former case, in order to increase the concentration of carbon dioxide gas (carbon dioxide gas) dissolved in the bath water, various aspects such as adjustment of the components of the bathing agent and ingenuity of the shape have been studied (for example, patent documents) 1-5).

JP-A-11-47220 JP 2009-149532 A JP 2011-190190 A JP-A-8-333236 JP 2010-208981 A

  However, the conventional bathing agent has a problem that most of the carbon dioxide generating agent reacts on the surface of the bath or the reaction of the carbon dioxide generating agent in the bath is slow. In other words, the conventional bathing agent cannot be said to sufficiently increase the carbon dioxide concentration in the bath water in a short time.

  This invention is made | formed in view of such a situation, and it aims at providing the bath agent excellent in the carbon dioxide concentration improvement ability in a short time.

  The present invention comprises a water-soluble film and a degassed carbon dioxide generator coated with the water-soluble film, and the carbon dioxide generator contains particles passing through a sieve having an aperture of 4.0 mm. A bathing agent containing 80% by mass or more. With such a bath agent, the carbon dioxide concentration in the bath water can be improved in a short time.

  In the present invention, it is preferable that the carbon dioxide generating agent contains a carbonate and an organic acid in order to ensure excellent carbon dioxide generating ability.

  In addition, the bath agent of this invention may be coat | covered using a water-soluble film, respectively, in the state in which the carbon dioxide generator contains carbonate and an organic acid, and the carbonate and the organic acid are separated.

  In order to develop excellent solubility at the bottom of the bathtub, the water-soluble film is preferably a polyvinyl alcohol film.

  ADVANTAGE OF THE INVENTION According to this invention, the bath agent which is excellent in the carbon dioxide concentration improvement ability in a short time can be provided.

  Hereinafter, preferred embodiments of the present invention will be described in detail. However, the present invention is not limited to the following embodiments.

  The bathing agent of the present embodiment comprises a water-soluble film and a degassed carbon dioxide generator formed by coating with the water-soluble film.

[Water-soluble film]
As a water-soluble film, it is preferable to use a water-soluble film as long as it has a characteristic that the bathing agent put into the bath water does not dissolve until it reaches the bottom of the bathtub, while it immediately dissolves after reaching the bottom of the bathtub. Can do. From this point of view, water-soluble film materials include hydroxypropylcellulose, hydroxypropylmethylcellulose, water-soluble hydroxyethylcellulose, methylcellulose, carboxymethylcellulose, gelatin, pectin, arabinoxylan, soybean polysaccharide, sodium alginate, carrageenan, xanthan gum, guar gum , Pullulan, polyvinyl pyrrolidone, polyethylene glycol, sodium polyacrylate, polyacrylamide, polyethylene oxide, polyvinyl alcohol and the like. Among these, polyvinyl alcohol is preferable.

  The thickness of the water-soluble film is not particularly limited. For example, when a polyvinyl alcohol film is used, the thickness is preferably 5 to 500 μm and more preferably 15 to 100 μm in order to sufficiently express the above preferable characteristics. . The distance from the bath surface to the bottom of the bathtub is generally about 30 to 50 cm. When the water-soluble film thickness is less than 5 μm, the film easily dissolves when the bathing agent touches the surface of the bath, and the reaction of the carbon dioxide generating agent proceeds before the bathing agent reaches the bottom of the bathtub. May end up. If the water-soluble film is thicker than 500 μm, it is difficult for the film to dissolve easily, and it may take time until the reaction starts after the bathing agent is added to the bath water, or in the bath water. In some cases, the gas generated inside the water-soluble film that remains undissolved in the tank accumulates and part of the bathing agent floats on the surface of the bath water.

[Carbon dioxide generator]
The carbon dioxide generator can be a particulate composition mainly containing a carbonate and an organic acid. Such carbonate and organic acid are not particularly limited as long as they are respectively used in ordinary bathing agents.

  Examples of the carbonate include sodium bicarbonate, sodium carbonate, potassium bicarbonate, potassium carbonate, calcium carbonate, magnesium carbonate, sodium sesquicarbonate, and the like. These carbonates may be used alone or in combination of two or more. It may be used. Among these, sodium hydrogen carbonate or sodium carbonate is preferable from the viewpoints of solubility in water, ability to generate carbon dioxide gas, and the like. The content of the carbonate is preferably from 10 to 90% by mass, and preferably from 30 to 70% by mass, based on the total mass of the carbon dioxide generating agent, from the viewpoint of expressing a better carbon dioxide generating ability. Is more preferable, and it is still more preferable that it is 40-60 mass%.

  Examples of the organic acid include malic acid, tartaric acid, citric acid, maleic acid, succinic acid, phthalic acid, fumaric acid, glutaric acid, adipic acid, benzoic acid, salicylic acid, and oxalic acid. You may use it by mixing 2 or more types. Among these, malic acid or citric acid is preferable from the viewpoints of solubility in water, ability to generate carbon dioxide gas, and the like. The content of the organic acid is preferably 10 to 90% by mass, and preferably 30 to 70% by mass, based on the total mass of the carbon dioxide generating agent, from the viewpoint of expressing more excellent carbon dioxide generating ability. Is more preferable, and it is still more preferable that it is 40-60 mass%.

  In the present embodiment, the carbonates exemplified above and an organic acid can be used in appropriate combination, but sodium hydrogen carbonate, malic acid, Combinations of sodium hydrogen and citric acid, sodium carbonate and malic acid, sodium carbonate, citric acid, and the like are preferable examples.

In addition to the main components (carbonates and organic acids), the carbon dioxide generator may be blended with various optional components that are commonly used in bathing agents. Examples of such optional components include the following. In addition, if content of these arbitrary components is a grade which does not impair a carbon dioxide generating capability, there will be no problem in particular, and it can be made about 0-60 mass% on the basis of the total mass of a carbon dioxide generator.
Inorganic salts: Chlorides such as sodium chloride, potassium chloride, ammonium chloride; sulfates such as sodium sulfate, aluminum sulfate, iron sulfate, sodium thiosulfate, potassium thiosulfate, sodium hyposulfite; sodium nitrate, potassium nitrate, calcium nitrate, etc. Nitrates; phosphates such as sodium phosphate, sodium polyphosphate, calcium hydrogen phosphate; sulfides such as sulfur, sodium sulfide, potassium sulfide, iron sulfite; anhydrous silicic acid, metasilicic acid, mica powder, neutral clay, etc. Silicon compounds; hydroxides such as sodium hydroxide and calcium hydroxide; borax; boric acid; calcium oxide; potassium bromide; potassium permanganate; artificial callus salt; Oil, olive oil, soybean oil, liquid paraffin, petrolatum, stearyl alcohol, millis Essential oils such as acid, lauric acid, palmitic acid, glyceride, rice bran extract, rice germ oil, ceramide, silicone: orange oil, lemon oil, bergamot oil, lavender oil, rosemary oil, basil oil, peppermint oil, eucalyptus oil, Clove oil, cinnamon oil, nutmeg oil, ginger oil, artemisia oil, salvia oil, absynth oil, sandalwood oil, costas oil, labdanum oil, ambergris, musk, camphor, menthol, cineole, eugenol, citral, citronellal, pinene, Herbal medicines such as limonene: sardines, peanuts, valerian, keigai, kokuboku, senkyu, spruce, touki, shyoku, peonies, peony, oxon, sanshin, keihi, carrot, bukuryoku, dokugaku, shobu, Moisturizing ingredients such as ivy, pine bush, beak, jujube, fennel, chimpi, campi, chamomile: polyhydric alcohols such as propylene glycol, 1,3-butylene glycol, glycerin, xylose, xylitol, sorbitol; polyethylene glycol, polyvinyl alcohol, alginic acid Water-soluble polymers such as sodium and polyvinylpyrrolidone; mucopolysaccharides such as chondroitin sulfate and hyaluronic acid; plant collagen obtained from soybeans, corn, carrots, etc .; marine collagen obtained from salmon, puffer fish, tuna, flounder, etc .; Sodium lactate, disodium tartrate, sodium pyrrolidonecarboxylate, disodium glutamate, etc .; cationized cellulose, cationized guar gum, cationized fenugreek gum, cation Cationic polymers such as modified tara gum, cationized locust bean gum, etc.
White turbidizer: Titanium oxide and titanium oxide coating with improved solubility in bath water, polystyrene, styrene / divinylbenzene copolymer, styrene / vinyl pyrrolidone copolymer, etc.
Other: Ingredients necessary for bath preparation such as fragrances and pigments

  The organic acid contained in the carbon dioxide generating agent is easily affected by moisture in the air, and in the prior art, a process such as coating the organic acid with a surfactant is required. Moreover, in order to ensure sufficient moldability, a binder may be required in the prior art. On the other hand, in the bath agent of this embodiment, since the degassed carbon dioxide generator is covered with a water-soluble film, it is not necessary to use these surfactants and binders. For example, when a surfactant is used, irritation to the skin due to degreasing or the like may occur, or the reactivity (solubility) of organic acids and carbonates may be reduced. Moreover, when a binder is used, the solubility of the combined organic acid and carbonate is lowered, and as a result, the carbon dioxide generating ability may be lowered. Therefore, it is one of the advantages of the bath agent of this embodiment that it is not necessary to add these components.

  In the present embodiment, the carbon dioxide generating agent contains 80% by mass or more of particles that pass through a sieve having a mesh size of 4.0 mm so that a large amount of carbon dioxide can be immediately generated at the bottom of the bathtub. From the same viewpoint, the carbon dioxide generator preferably contains 85% by mass or more of particles passing through a sieve having an aperture of 4.0 mm, more preferably contains 90% by mass or more, and 100% by mass ( That is, it is more preferable that the total amount of the carbon dioxide generating agent is particles passing through a sieve having an opening of 4.0 mm.

  On the other hand, the carbon dioxide generator preferably contains 90% by mass or more of particles that do not pass through a sieve having an opening of 1 μm, and more preferably contains 80% by mass or more of particles that do not pass through a sieve having an opening of 10 μm. If the size of the particles contained in the carbon dioxide generating agent is too fine, blocking is likely to occur, and the particles may easily rise during the production of the bath agent. Also, if the carbon dioxide gas generator contains a lot of fine particles, the bathing agent has a high density and solidifies, so that the dissolution rate becomes slow and the generation of carbon dioxide gas in a short time may be insufficient. .

  As long as the carbon dioxide generating agent satisfies the above predetermined particle size, for example, the powdery main component may be appropriately mixed with a necessary amount of an arbitrary component, or mixed as such. What was once compressed and crushed may be used.

  In the bathing agent of this embodiment, the aspect of the carbon dioxide generating agent is formed by coating a carbonate and an organic acid (optional components may be included) using a single water-soluble film. Alternatively, the carbonic acid salt and the organic acid may be coated with separate water-soluble films in a state where the carbonate and the organic acid may be separated (each may contain an optional component). In the former case, since the mixture containing carbonate and organic acid can be coated at once, the manufacturing process of the bath agent can be simplified. On the other hand, in the latter case, it is possible to achieve an extremely excellent increase in carbon dioxide concentration and a large amount of foaming associated therewith. In particular, bubbles generated on the bath water surface due to the rapid reaction of carbonate and organic acid can give a moderate massage effect to the user.

  Although there is no restriction | limiting in particular in the shape, weight, etc. of the bath agent of this embodiment, As a shape, it can be set as a sphere, a rectangular parallelepiped, a cube, a column shape, etc., and it can be about 10-400 g as a weight.

[Degassing]
Since the bath agent reaches the bottom of the bathtub, in this embodiment, the carbon dioxide generating agent is covered with a water-soluble film in a state where air is sufficiently removed. At this time, as long as the bathing agent reaches the bottom of the bathtub within a predetermined time, the degree of deaeration is not particularly limited. For example, in the present embodiment, the degree of deaeration (deaeration degree) is as follows. It can be used as a guide.

-When using a powdered carbon dioxide generator once compressed and crushed-
Air is removed from the carbon dioxide generator by compressing a predetermined amount of the carbon dioxide generator using a tableting machine. At this time, for example, the degree of deaeration (%) calculated by the following formula is preferably 50% or more, more preferably 60% or more, and further preferably 70% or more. The degassed carbon dioxide generator is placed in a water-soluble film, the air in the film is removed and sealed, and the carbon dioxide generator is crushed to produce the bath agent of the present embodiment. be able to. The carbon dioxide generating agent may be crushed using a crushing device such as a compression crusher or a vibration crusher, or may be crushed using a hammer. Further, the air in the film may be removed using the above-described decompression device, or may be directly extruded by hand.
A: Volume of carbon dioxide generator before tableting B: Volume of carbon dioxide generator after tableting C: Volume of air degassed by tableting = AB
D: Volume of carbonate contained in carbon dioxide generator E: Volume of organic acid contained in carbon dioxide generator F: Volume of optional component contained in carbon dioxide generator G: Volume of air before tableting = A− (D + E + F)
H: Volume of air after tableting = GC
I: Deaeration degree (%) = {1- (H / G)} × 100

In addition, when tableting the carbon dioxide generator once, as long as the air in the carbon dioxide generator can be sufficiently removed (degassed) and the tablet packed in a water-soluble film can be crushed later, There are no particular restrictions on the tableting conditions. From such a viewpoint, for example, when a hydraulic manual tableting machine is used, the tableting pressure is preferably at least 50 kgf / cm ² from the viewpoint of ease of tableting and crushing, and 1000 kgf at the highest. / Cm ² or less is preferable. In this range, tableting pressure is preferably from 100~500kgf / cm ^2, and more preferably 400 kgf / cm ² from 200. In addition, when the pressure at the time of tableting is larger than 1000 kgf / cm ² , the carbon dioxide gas generating agent may be easily crushed at the time of tableting, or it becomes difficult to crush the tableted tablet packed in a water-soluble film. If you try to crush it, the water-soluble film may be damaged.

-When using a powdered carbon dioxide generator-
A predetermined amount of carbon dioxide generator is placed in the water-soluble film, and air is removed from the carbon dioxide generator using a decompression device. For example, if it is an aspirator (guideline for decompression capacity: 30 mmHg), it should be about 5 to 10 seconds; if it is a diaphragm pump (guideline for decompression capacity: 23 mmHg), it should be about 3-8 seconds; For example, by performing deaeration for about 2 seconds, it is possible to obtain a degree of deaeration similar to the case of tableting. The bathing agent of this embodiment can be produced by sealing after deaeration.

[how to use]
In the bathing agent of this embodiment, the water-soluble film dissolves rapidly after reaching the bottom of the bathtub, and the reaction of the carbon dioxide generating agent is started. Therefore, the user can obtain the effect of increasing the carbon dioxide gas concentration in a short time by simply putting the bath agent into the bath water. However, a further effect can be acquired by stirring the whole bath after the bathing agent reaches the bottom of the bathtub.

  In the present embodiment, “excellent in the ability to improve the concentration of carbon dioxide in a short time” means, for example, when a bathing agent of about 30 to 60 g is poured into 200 L of bath water, the concentration of carbon dioxide is about 15 seconds. (Preferably within 15 seconds) and 200 ppm or more. However, this is only a guide and does not limit the specific mode of the bathing agent according to the present embodiment.

  Next, the present invention will be described in more detail with reference to the following examples, but these examples do not limit the present invention.

[Preparation of bathing agent]
In this example, the following materials were used.
Carbonate: baking soda (trade name: Sodium Bicarbonate “FOOD GRADE-MEDIUM GRANULAR”, manufactured by Penrice)
Organic acid: Malic acid (trade name: Food additive DL-malic acid, manufactured by BARTEK)
Water-soluble film: Polyvinyl alcohol film (trade name: Hi-Selon-M, manufactured by Nippon Synthetic Chemical Industry Co., Ltd., thickness: about 20 μm)

Bath agent A (corresponding to Comparative Example): A mixture of 33.2 g (≈0.4 mol) of carbonate and 26.8 g (≈0.2 mol) of organic acid.
Bathing agent B (corresponding to Comparative Example): Bathing agent A enclosed in a water-soluble film.
Bathing agent C (corresponding to comparative example): Bathing agent A was compressed using a hydraulic manual tableting machine (product name: RIKEN POWER P1-B, manufactured by Riken Seiki Co., Ltd.) at a tableting pressure of 300 kgf / cm ² . And a cube shape with a side of about 35 mm. The degree of deaeration at this time was 80 ± 5%.
Bathing agent D (corresponding to Comparative Example): Bathing agent C enclosed in a water-soluble film. At the time of encapsulation, the air in the film was directly pushed out by hand.
Bathing agent E (corresponding to the comparative example): The bathing agent D was impacted by a hammer from the outside, and the bathing agent C enclosed inside was slightly crushed. In the pulverized carbonate and organic acid, the amount of particles passing through a sieve having a mesh size of 4.0 mm was 20% by mass or less. Moreover, the carbonate and organic acid after crushing contained 90% by mass or more of particles that did not pass through a sieve having an opening of 1 μm.
Bathing agent F (corresponding to Example): A bathing agent C was impacted by a hammer from the outside, and the bathing agent C enclosed inside was sufficiently crushed. The carbonate and organic acid after crushing contained 98 ± 2% by mass or more of particles passing through a sieve having a mesh size of 4.0 mm. Moreover, the carbonate and organic acid after crushing contained 90% by mass or more of particles that did not pass through a sieve having an opening of 1 μm.
Bath salt G (corresponding to Example): 166 g (≈2 mol) of carbonate and 134 g (≈1 mol) of organic acid are put in separate water-soluble films, respectively, and diaphragm type vacuum pumps (product names: N810.3FT.18, KNF) The product was degassed and sealed for 5 seconds. The encapsulated carbonate contains 99.5 ± 0.5% by mass or more of particles passing through a sieve having a mesh size of 4.0 mm, and the encapsulated organic acid passes through a sieve having a mesh size of 4.0 mm. The particles contained 99.5 ± 0.5% by mass or more. Furthermore, these carbonates and organic acids each contained 90% by mass or more of particles that did not pass through a sieve having an opening of 1 μm.

[Evaluation of bath salts]
1) Carbon dioxide gas concentration evaluation Bath salts A to G were put into the center of a bath (size: approx. 100 cm, horizontal: approx. 63 cm, height: approx. 52 cm) in which 200 L of hot water at 40 ° C. was stored. The carbon dioxide gas concentration was measured. In addition, about the bath agent G, after the bath agent reached | attained to the bathtub bottom part, the bath agent accumulated on the bottom was stirred by hand. The measurement position of the carbon dioxide concentration was about 5 to 10 cm deep from the water surface and about 20 to 30 cm in height from the bath agent. For the measurement of the carbon dioxide concentration, a portable carbon dioxide concentration meter CGP-1 (product name: manufactured by Toa DKK Corporation) was used. Table 1 shows changes in the carbon dioxide concentration with time for each bath.

2) Evaluation of foaming After bathing the bath in the same manner as in 1) above, the amount of carbon dioxide gas (bubbles) generated after 15 seconds was visually evaluated according to the following evaluation criteria.
<Evaluation criteria>
The whole bath surface is covered with foam: ○
About 50% of the bath surface is covered with foam:
No bubbles remain on the bath surface: ×

  When carbon dioxide gas generator powder is poured into bath water as it is (bath agent A) and when the powder is wrapped in a water-soluble film without degassing (bath agent B), most of the carbon dioxide gas on the bath water surface. The generating agent reacted and foamed, and a sufficient amount of carbonic acid could not be dissolved in the bath water. In the case of the tableting type (baths C and D), the dissolution and disintegration time after reaching the bottom of the bathtub is long, so the carbon dioxide concentration could not be increased in a short time. Furthermore, even if the powder is degassed and wrapped in a water-soluble film, if the contained particles do not pass through a sieve having a mesh size of 4.0 mm over 80% by mass (bathing agent E), it reaches the bottom of the bathtub Since the dissolution and disintegration time after the treatment was long, the carbon dioxide concentration could not be increased in a short time.

  On the other hand, in bathing agents F and G, once the bathing agent has settled down to the bottom of the bathtub, when the water-soluble film dissolves, the carbon dioxide gas generating agent reacts and foams instantly. The gas concentration could be increased.

Claims (4)

  A water-soluble film, and a degassed carbon dioxide generator coated with the water-soluble film, wherein the carbon dioxide generator contains 80% by mass of particles passing through a sieve having an aperture of 4.0 mm. Including bath additives.   The bath agent according to claim 1, wherein the carbon dioxide generator includes a carbonate and an organic acid.   The bath agent according to claim 1, wherein the carbon dioxide generating agent contains a carbonate and an organic acid, and is coated with the water-soluble film in a state where the carbonate and the organic acid are separated.   The bath agent according to any one of claims 1 to 3, wherein the water-soluble film is a polyvinyl alcohol film.