JP2003073700A - Paper soap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paper soap coated with a moisture holding component having a high moisture holding effect without affecting the solubility of a water- soluble paper. SOLUTION: The paper soap is obtained by coating a liquid soap and a moisture holding component on a water-soluble paper composed of a carboxymethylcellulose alkali salt and wood pulp, and drying the coated water- soluble paper. The moisture holding component may be at least one kind selected from sorbitol, glycerin, urea, propylene glycol, 1,3-butylene glycol, polyethylene glycol, sodium d1-pyrrolidonecarboxylate, sodium lactate, sodium hyaluronate, xylitol, and maltitol, and further the amount of the moisture holding component coated may be 0.2-2.0 g/m<2> .

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper soap, and more specifically, it applies a liquid soap and a moisturizing component to water-soluble paper consisting of carboxymethyl cellulose alkali salt (hereinafter sometimes referred to as CMC-Na) and dissolving pulp. The present invention relates to a paper soap formed by industrial drying.

[0002]

2. Description of the Related Art Conventionally, a paper soap in which a liquid soap is applied to a water-soluble paper composed of CMC-Na and wood pulp has been provided. This paper soap is a soap that is convenient to carry because water-based paper, which is the base material, is dissolved and dispersed at the same time by washing the fingers and the like while foaming each of the sheets sized to a predetermined size with water or warm water. . Similar to solid soap, such paper soap also removes dirt on the skin as well as the skin fingers. Therefore, it is desirable to add a moisturizing component in order to leave a moist feeling on the skin and be gentle to the skin.

[0003]

The paper soap is characterized in that the water-soluble paper which is the base material of the liquid soap is dissolved, and the solubility of the water-soluble paper allows the paper soap to have portability. However, since the water-soluble paper is mainly composed of CMC-Na obtained by ion-exchange of carboxymethyl cellulose (hereinafter, referred to as CHC-H) with an alkaline solution, CMC-Na will not change to CMC-Na unless the pH of the water-soluble paper is kept in the alkaline region.
It returns to H and loses solubility. Therefore, care must be taken when adding an acid or base that changes the pH to the water-soluble paper. On the other hand, according to the experience of the present inventors, it is possible to add a compound other than the acid or base to the water-soluble paper to improve the solubility. When applied to water-soluble paper, the water-soluble paper may become sticky, delaying the drying time, and thus causing inconvenience in the manufacturing process of paper soap, or sticking to dissolved residues that are not desirable as paper soap. I had to leave. Also,
Since paper soap must be sufficiently dried by thermal drying after applying liquid soap, it is necessary to consider the influence of heating on the article to be coated.

Under the above circumstances, it is an object of the present invention to provide a paper soap coated with a moisturizing component so that the moisturizing effect can be sufficiently exerted without affecting the solubility of water-soluble paper. To do.

[0005]

The invention for solving the above-mentioned problems is characterized in that a water-soluble paper consisting of an alkali salt of carboxymethylcellulose and wood pulp is applied with liquid soap and a moisturizing component and dried. The main point is paper soap.

In the above invention, the moisturizing ingredients are sorbitol, glycerin, urea, propylene glycol, 1,
3-butylene glycol, polyethylene glycol, d
It may be one or more selected from sodium l-pyrrolidonecarboxylate, sodium lactate, sodium hyaluronate, xylit and maltitol.

Further, the coating amount of the above moisturizing component may be 0.2 to 2.0 g / m ^{2 with} respect to the water-soluble paper.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Water-soluble paper as a base material for paper soap is CM
It can be produced from C-H and wood pulp by a known method. Specifically, a mixed paper stock of CMC-H and wood pulp is made into paper, and an alkaline aqueous solution such as NaOH or sodium carbonate is added to wet paper to make CMC-H CMC-Na, which is then dehydrated and dried. Manufactured. Paper soap is used only for washing hands, etc., and strength is not required for water-soluble paper by collecting it.Therefore, if the proportion of wood pulp increases, the strength of paper soap will increase, but the dissolved residue of water-soluble paper will remain. Considering the increase, CMC-Na 70-90
A ratio of 10 to 30 parts by weight of wood pulp is preferable with respect to parts by weight. More preferably, it is 15 to 25 parts by weight of wood pulp with respect to 75 to 85 parts by weight of CMC-Na. In addition,
The carboxymethyl cellulose alkali salt is most preferably Na salt, but may be Ba salt, Al salt or the like.

Liquid soap is applied to the water-soluble paper produced as described above. The liquid soap is not particularly limited as long as it is a cosmetic soap, and an anion, a cation, an amphoteric surfactant, a nonionic surfactant and the like are used as cleaning ingredients, and a diluent such as water or alcohol is added to them. be able to. Also, since the pH of liquid soap is in the alkaline range,
In consideration of skin irritation, it is preferable that it is closer to the neutral region. In consideration of the solubility of water-soluble paper in liquid soap, p
It is preferable to adjust the pH by adding an H adjuster. pH
The regulator is not particularly limited as long as it is safe for the body, and citric acid, oxoglutaric acid, malic acid, tartaric acid, itaconic acid and the like used as food additives are suitable.

A moisturizing component is applied to the water-soluble paper. Moisturizing components to be applied are sorbitol, glycerin, urea, propylene glycol, 1,3-butylene glycol, polyethylene glycol, sodium dl-pyrrolidone carboxylate, sodium lactate, sodium hyaluronate,
Examples thereof include xylit and maltitol, and one or more of these can be used. The amount of moisturizing component applied to water-soluble paper is 0.2 to 2.0 g / cm ^2.
Is preferable, and more preferably 0.5 to 1.5 g / m ² . This is because if the coating amount is less than 0.2, a sufficient moisturizing effect cannot be obtained, and if it is more than 2.0, the dissolved residue remains sticky and is not preferable for paper soap. The moisturizing component is sufficiently mixed with liquid soap in advance and applied to water-soluble paper.

As described above, a paper soap can be manufactured by sufficiently drying the water-soluble paper coated with the liquid soap and the moisturizing component by heat drying. The paper soap is cut into a desired size by using a cutting machine or the like so that each leaf can be used for washing fingers and the like.

[0012]

EXAMPLES Next, the present invention will be described with reference to examples, but the present invention is not limited to the above-described embodiments and the following examples.

(Example 1) CMC-H and wood pulp were mixed to make a paper, and the wet paper thus obtained was sprayed with an excessive aqueous solution of sodium carbonate, further dehydrated and dried to give a weight of 25 g / m ² of water-soluble paper. Was manufactured. This water-soluble paper consists of 80 parts by weight of CMC-Na and 20 parts by weight of wood pulp. Liquid soap is
A cleaning agent prepared by adding water and ethyl alcohol as a diluent to sodium olefin (C14-16) sulfonate as a cleaning agent was prepared, and sorbitol was prepared as a moisturizing component.
The liquid soap and sorbitol were thoroughly mixed in the coating tank. Olefin (C14-16) sodium sulfonate to a water feeding 8.25 g / ^{m 2,} sorbitol was adjusted the mixture solution to be coated at 1.0 g / ^{m 2.}

Next, the above water-soluble paper wound in a roll shape is passed through a coating tank, liquid soap and sorbitol are applied, and further, the water-soluble paper is passed between a pair of rollers facing each other. Liquid soap and sorbitol were removed.
The coating amount of the liquid soap and sorbitol on the water-soluble paper after the removal is the above coating amount. This liquid soap and water-soluble paper coated with sorbitol were heat dried to obtain a paper soap. This paper soap was cut into a rectangular shape having a length of 65 mm and a width of 48 mm.

Comparative Example 1 The coating amount of sorbitol was 0.
A paper soap was produced in the same manner as in Example 1 except that the amount was adjusted to 1 g / m ² .

Comparative Example 2 The coating amount of sorbitol was 2.
A paper soap was produced in the same manner as in Example 1 except that the amount was adjusted to be 5 g / m ² .

(Sensory test for moisturizing effect) Moisturizing effect (moisturizing effect) after washing the fingers of the five panelists with the same amount of water using the paper soaps of Example 1, Comparative Example 1 and Comparative Example 2 described above. A sensory test was conducted on the feeling. The results are shown in Table 1.
It was shown to.

[0018]

[Table 1]

As is clear from Table 1, most of the panelists in Example 1 exhibited a moisturizing effect (moisturizing feeling), and Comparative Example 2 exhibited an effect of moisturizing in all panelists.
In Comparative Example 1, sufficient moisturizing effect for panelists (moisturizing feeling)
Could not be observed.

(Study of Dissolved Residue) For Example 1 and Comparative Example 2, the dissolved residue of the paper soap after washing the fingers was observed. Regarding Example 1 and Comparative Example 2, the dissolution residue of paper soap was observed in the above sensory test. as a result,
The dissolved residue of the paper soap of Example 1 was traces and had no stickiness at all, but the paper soap of Comparative Example 2 had a large amount of dissolved residue and was sticky and a clean feeling due to washing could not be obtained.

[0021]

EFFECTS OF THE INVENTION According to the paper soap of the present invention, even when the fingers and the like are washed, there are few dissolved residues of the water-soluble paper and there is no stickiness (excellent solubility), and a moisturizing feeling (moist feeling) is maintained on the fingers and the like. Therefore, it is possible to provide a paper soap that is gentle on the skin.

─────────────────────────────────────────────────── ─── Continued Front Page (51) Int.Cl. ⁷ Identification Code FI Theme Coat (Reference) C11D 1/04 C11D 1/04 9/22 9/22 9/26 9/26 9/30 9/30 9 / 38 9/38 F term (reference) 4C083 AA111 AA112 AB312 AC102 AC121 AC131 AC132 AC241 AC301 AC681 AC792 AC851 AD041 AD271 AD272 AD331 CC23 DD12 EE06 EE10 4H003 AB02 BA19 DA02 EB04 EB05 EB08 EB18 EB20 EB36 EB41 EB42 FA02

Claims (3)

[Claims] 1. A paper soap comprising a water-soluble paper composed of an alkali salt of carboxymethyl cellulose and wood pulp, coated with liquid soap and a moisturizing component and dried. 2. A moisturizing component is sorbitol, glycerin,
One or more selected from urea, propylene glycol, 1,3-butylene glycol, polyethylene glycol, sodium dl-pyrrolidone carboxylate, sodium lactate, sodium hyaluronate, xylit, and maltitol. The paper soap according to claim 1. 3. The coating amount of the moisturizing component is 0.
It is 2-2.0 g / m < ² >, The paper soap of Claim 2 characterized by the above-mentioned.