JP2008080027A - Liquid chemical including tissue paper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the stimulation to the skin by achieving both softness and smoothness. <P>SOLUTION: Talc of 10-30 wt.%, whose average particle diameter (D50) is 3-15 μm according to the laser analysis scattering particle size distribution, a paper softening agent of 3-18 wt.% and a moisture retention component of 60-80% are included as main components in base paper. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a thin paper containing a chemical solution containing talc and a moisturizing component.

Recently, a so-called high-quality tissue paper that has been moistened by adding a chemical such as a moisturizing agent and improved the touch has been put on the market. It is popular because it is difficult (see, for example, Patent Document 1 and Patent Document 2). This tissue is soft and smooth, so it is used not only for nasal snuff, but also for cosmetics and infants. However, when the skin is used for these purposes, for example, in people with sensitive skin or at home with infants, those with less irritation to the skin are desired. In addition, there is a demand for a touch that is smooth like a cosmetic sheet and a smooth one that fits the skin.
In such medicinal solution-containing thin paper, it has been proposed to contain powder in the medicinal solution in order to improve the wiping property of sebum and moisture and to improve the dry feel (see Patent Document 3). By containing the powder, the friction on the skin surface is reduced, and the smooth feeling of the powder, the supple feeling and moist feeling of the moisturizing component are combined, and the product can be given a smooth and smooth feel.
However, the conventional medicinal solution-containing thin paper has a problem that the soft feeling and the smooth feeling cannot be achieved at the same time, and a sufficient hypoallergenicity has not been obtained.
In addition, Patent Document 3 uses CMC, urethane resin or latex as an adhesive component to prevent the powder from coming off, but according to the knowledge of the present invention, the adhesive component reduces the smoothness. It has been found that it has a tendency to reduce the flexibility.
JP 2003-164386 A JP-T-2004-513961 Japanese Patent No. 3450230

  Then, the main subject of this invention is providing the chemical | medical solution containing thin paper with less irritation | stimulation to skin which made soft feeling and smooth feeling compatible.

The present invention that has solved the above problems is as follows.
<Invention of Claim 1>
As a main component with respect to the base paper, talc having an average particle size (D50) by laser diffraction scattering particle size distribution of 3 to 15 μm is 10 to 30% by weight, softener for paper is 3 to 18% by weight, and moisturizing component is 60%. A medicinal solution-containing thin paper containing -80%.

(Function and effect)
In the present invention, since it contains a moisturizing component, it gives a moist feeling. Paper softeners provide a softening effect. In the present invention, talc is used. This talc contributes to the improvement of the smooth feeling as shown in Patent Document 3. However, in the present invention, since talc having a small average particle diameter is used, the smooth feeling based on the smooth feeling is particularly excellent.
When the average particle size exceeds 15 μm, the smoothness is inferior. In addition, the amount of separation from the paper increases, which tends to make the user uncomfortable. Further, it has been found that even when the average particle size is less than 3 μm, the amount released from the paper increases.
Furthermore, it has been found that softness is improved in addition to smoothness by using talc together with a paper softener.

<Invention of Claim 2>
The medicinal solution-containing thin paper according to claim 1, wherein the moisturizing component is glycerin.

(Function and effect)
Glycerin has a high moisturizing effect.

<Invention of Claim 3>
The medicinal solution-containing thin paper according to claim 1 or 2, which does not contain an adhesive component.

(Function and effect)
When talc is contained, an adhesive component can be used to fix talc to the base paper. However, since the adhesive component inhibits talc movement, there is a risk of hurting the skin due to talc when the skin comes into contact during use. In addition, since the paper becomes hard by containing an adhesive component, irritation to the skin increases. On the other hand, by not containing an adhesive component, the talc does not adhere firmly to the paper, and the talc added during use can reduce irritation to the skin by rolling or sliding on the skin. . As described above, the talc of the present invention has an average particle diameter (D50) of 3 to 15 μm based on the laser diffraction scattering particle size distribution, and is small but not excessively fine powder, so there is almost no talc detachment, Discomfort associated with metastasis can be prevented. This is measured using “SALD-2200” manufactured by Shimadzu Corporation as a laser diffraction type particle size distribution measuring apparatus.

  As described above, according to the present invention, it is possible to achieve both a soft feeling and a smooth feeling and to bring about advantages such as less irritation to the skin.

Hereinafter, embodiments of the present invention will be described in detail.
As the base paper of the thin paper of the present invention, known ones can be used without limitation, but the NBKP blending ratio (JIS P 8120) in the pulp raw material is 30.0 to 80.0%, particularly 40.0 to 70. What is 0% is suitable. As for the rice tsubo (JIS P 8124), 10.0 to 35.0 g / m ² per ply is desirable. The paper thickness (measured with a Peacock manufactured by Ozaki Mfg. Co., Ltd.) is desirably 2 plies (two stacked), 100 to 300 μm, and half for one ply. The crepe rate (((peripheral speed of the dryer during paper manufacture) − (reel peripheral speed)) / (peripheral speed of the dryer during paper manufacture) × 100) is desirably 15.0 to 26.0.

  The base paper of the present invention has a dry tensile strength (hereinafter also referred to as dry paper strength) specified in JIS P 8113 of 2 plies in a longitudinal direction of 130 cN / 25 mm or more, particularly 280 to 310 cN / 25 mm, and a transverse direction of 40 cN / 25 mm. As described above, it is particularly preferable to use one having a thickness of 60 to 100 cN / 25 mm. When the dry paper strength of the base paper is too low, troubles such as tearing and elongation are likely to occur during production, and when it is too high, the touch becomes stiff when used.

  These paper strengths can be adjusted by a known method. For example, a paper strength agent is internally added (added to a stage before the dryer part, for example, pulp slurry), and pulp freeness is reduced (for example, about 30 to 40 ml is reduced). It is possible to appropriately combine several methods such as increasing the NBKP blending ratio (for example, 50% or more).

  As paper strength, it is important to ensure wet paper strength. As this wet paper strength agent, polyamide / epichlorohydrin resin, urea resin, acid colloid / melamine resin, thermal crosslinkability imparting PAM, or the like can be used. When the wet paper strength agent is internally added, the addition amount can be about 5 to 20 kg / t in weight ratio to the pulp slurry.

  In the present invention, a chemical is contained in the base paper. The chemical content in the thin paper is preferably 5 to 35% by weight with respect to the base paper. A particularly preferred range is 20 to 30% by weight. If the chemical content is too small, not only will the effect be poor, but the amount applied to the base paper will not be stable, and if it is too large, it will become sticky and the softness and smoothness will be hindered. As a method for containing the chemical solution, a known application method such as spray coating, roll coating, or immersion can be used.

  The chemical solution may be composed of about 60 to 100% by weight, particularly about 80 to 95% by weight of an active ingredient, and about 0 to 40% by weight, especially about 5 to 20% by weight of an ineffective ingredient such as moisture. it can.

  In the present invention, 10 to 30% by weight of talc having an average particle size (D50) of 3 to 15 μm (particularly desirably 5 to 10 μm) as a main component in the active ingredient is 10 to 30% by weight, and is flexible for paper. 3 to 18% by weight of the agent and 60 to 80% of the moisturizing component.

  There are commercially available products of talc of about 0.5 μm to 35 μm, but 3 to 15 μm of talc is used in the present invention. Even if the particle size of the talc is too small, a smooth feeling is secured, but the amount of separation from the paper is large, and the talc may enter the pores and cause skin trouble. On the other hand, if the particle size exceeds 15 μm and is too large, the effect of improving smoothness is reduced. In other words, smoothness is considered to be exhibited by the powder entering the gaps between the pulp fibers and filling the gaps, thereby reducing the difference in the irregularities of the fibers. If the talc particle size exceeds 15 μm, the pores of the fibers Since it cannot penetrate, it is thought that it does not contribute to the improvement of smoothness.

  It can also be used in combination with other powders (especially those in the form of granules) having an average particle size of more than 15 to 40 μm (especially 20 to 30 μm is desirable) relative to talc. As other powder used together, less than 50 weight% is desirable with respect to talc.

  In addition, since talc is a plate-like crystal, it gives a smooth tactile sensation by sliding on the skin when used, and reduces irritation to the skin. Granules, such as starch, provide a smooth feel when the product rolls over the skin, reducing skin irritation.

  Moreover, when there is too much talc regarding the blending ratio of talc and other powders to be used together and there are too few other powders to be used together, the smooth feeling is improved, but the soft feeling is poor. On the other hand, when there is too little talc and too many other powders are used together, the soft feeling is improved, but the smooth feeling is poor.

  Furthermore, when there is too much talc content in a chemical | medical solution, the fluidity | liquidity of a chemical | medical solution will fall and the permeability and fixing property to a base paper will worsen. Moreover, when there is too little talc content, the effect by powder addition will become scarce.

  Other powders that can be used in combination include inorganic powders such as kaolin, clay, calcium carbonate, titanium oxide, and metal soaps (aluminum stearate, magnesium stearate, calcium stearate, zinc stearate, lithium stearate, etc.), Organic powders such as corn starch, wheat flour, rice starch, potato starch, and wheat flour protein can be used singly or in combination. Among these, starch is optimal, and the effect is not remarkable in the other powders exemplified.

  When talc is contained in the chemical, talc can be contained in a so-called lotion agent, and the lotion agent can be fixed on the paper by a transfer method.

  In the present invention, a moisturizing agent is additionally contained as a main component of the active ingredient. Examples of humectants include polyhydric alcohols such as glycerin, diglycerin, propylene glycol, 1,3-butylene glycol, and polyethylene glycol; sugars such as sorbitol, glucose, xylitol, maltose, maltitol, mannitol, and trehalose; Derivatives, higher alcohols such as cetanol (cetyl alcohol), stearyl alcohol, cetostearyl alcohol, oleyl alcohol (which belongs to aliphatic alcohols among higher alcohols), liquid paraffin, collagen, hydrolyzed collagen, hydrolyzed keratin, hydrolyzed One or more of silk, hyaluronic acid or a salt thereof, ceramide and the like can be used in any combination. The humectant is preferably contained in the main component excluding the powder in an amount of 60 to 80% by weight, particularly 65 to 75% by weight.

  It is particularly desirable to employ glycerin as a moisturizing agent and contain 60 to 80% by weight in the main component.

  Another effective moisturizing agent is liquid paraffin, and the amount is desirably 10% or less, particularly 0.5 to 5% in the moisturizing component.

  Furthermore, as the humectant, an aliphatic alcohol having a linear or branched (preferably linear) alkyl or alkenyl group having 14 to 24 carbon atoms (preferably 18 to 22) is effective. . Preferred examples include myristyl alcohol, cetyl alcohol, stearyl alcohol, and behenyl alcohol, and mixtures of aliphatic alcohols such as cetostearyl alcohol, which is a mixture of cetyl alcohol and stearyl alcohol. In particular, cetyl alcohol, cetostearyl alcohol, and stearyl alcohol are preferable. The amount of the aliphatic alcohol added is preferably 10% or less, particularly 0.5 to 5% in the moisturizing component.

  Further, as other active ingredients, an oily component, an emulsifying component, an antifungal component, an antifoaming component and the like can be contained in the chemical solution. These components are preferably 5% by weight or less. In particular, when there are too many oil components, the sticky feeling increases, and when there are too many emulsified components, foaming tends to occur, so that there is a problem of deterioration in texture and operability.

  Oily components include petroleum or mineral oil-derived components such as petrolatum, animal oil-derived components such as mink oil, lanolin oil, squalane, olive oil, jojoba oil, rosehip oil, almond oil, eucalyptus oil, avocado oil, camellia oil, large oil Plant-derived components such as bean oil, safflower oil, sesame oil, evening primrose oil, sunflower oil, silicone oil such as alkylmethyl silicone, and liquid paraffin can be used. Liquid paraffin is particularly suitable.

  In the present invention, a paper softener is used. As the paper softener, it is desirable to use 3 to 18% by weight in the main component in the active ingredient.

  As the paper softener, an anionic surfactant, a nonionic surfactant, a cationic surfactant and an amphoteric surfactant can be appropriately selected and used. They also exhibit an antifoaming effect and contribute to emulsion stability.

  As the anionic surfactant, carboxylate, sulfonate, sulfate ester, phosphate ester, and the like can be used. An alkyl phosphate ester salt is particularly preferable.

  Examples of nonionic surfactants include sorbitan fatty acid esters, diethylene glycol monostearate, diethylene glycol monooleate, glyceryl monostearate, glyceryl monooleate, and polyhydric alcohol monofatty acid esters such as N- (3- Oleiroshiki-2-hydroxypropyl) diethanolamine, polyoxyethylene hydrogenated castor oil, polyoxyethylene sorbitan beeswax, polyoxyethylene sorbitan sesquistearate, polyoxyethylene monooleate, polyoxyethylene monolaurate, polyoxyethylene cetyl ether Polyoxyethylene lauryl ether can be used.

  As the cationic surfactant, a quaternary ammonium salt, an amine salt, an amine, or the like can be used.

  In addition, as the zwitterionic surfactant, an aliphatic derivative of a secondary or tertiary amine containing carboxy, sulfonate, sulfate, an aliphatic derivative of a heterocyclic secondary or tertiary amine, or the like is used. be able to.

（式中、Ｒ¹は、炭素数６〜２４の直鎖もしくは分岐鎖のアルキル基もしくはアルケニル基又はＲ³−Ｏ−Ｒ⁴−を示し、Ｒ²は、炭素数１〜６の直鎖もしくは分岐鎖のアルキル基又は炭素数１〜３のヒドロキシアルキル基を示し、それぞれ異なっていても良い。Ｒ³は炭素数６〜２４の直鎖もしくは分岐鎖のアルキル基もしくはアルケニル基、Ｒ⁴は炭素数１〜６の直鎖のアルキレン基を示す。Ｘ^-は陰イオンを示す。） Among the foregoing, cationic surfactants have a high softening effect. In particular, a quaternary ammonium salt, particularly a compound represented by the following general formula (A) (component (A)) is optimal.

(In the formula, R ¹ represents a linear or branched alkyl group or alkenyl group having 6 to 24 carbon atoms or R ³ —O—R ⁴ —, and R ² represents a straight chain having 1 to 6 carbon atoms or A branched alkyl group or a hydroxyalkyl group having 1 to 3 carbon atoms, which may be different from each other, R ³ is a linear or branched alkyl group or alkenyl group having 6 to 24 carbon atoms, and R ⁴ is carbon. Represents a linear alkylene group of 1 to 6. X ⁻ represents an anion.)

In the component (A), R ¹ and R ² are preferably shown below from the viewpoint of paper softness.
In the above Formula (A), the R ^1, a 6 to 24 carbon atoms, preferably from 12 to 24, more preferably from 16 to 22, more preferably 20 to 22. R ¹ is a linear or branched alkyl group or alkenyl group or R ³ —O—R ⁴ —, and R ¹ and R ³ are preferably linear, and are preferably alkyl groups. The group is particularly preferred. R ² is a linear or branched alkyl group having 1 to 6 carbon atoms, preferably 1 to 3 carbon atoms, or a hydroxyalkyl group having 1 to 3 carbon atoms, and may be different from each other. R ² is preferably a linear alkyl group. R ⁴ is a linear alkylene group having 1 to 6 carbon atoms, preferably 2 to 4 carbon atoms.

X ⁻ is an anion, a halogen ion such as fluorine ion, chlorine ion, bromine ion or iodine ion, or an organic anion such as acetate ion, citrate ion, lactate ion, glycolate, phosphate ion or nitrate ion. Sulphonate ions, sulfate ions, and alkyl sulfate ions such as methyl sulfate ions and ethyl sulfate ions. Halogen ions or alkyl sulfate ions are preferable, and chlorine ions, methyl sulfate ions, or ethyl sulfate ions are particularly preferable.

As a compound of the general formula (A), monoalkyltrimethylammonium salt, N-alkyl-N, N-dihydroxyethyl-N-methylammonium salt, monoalkyltriethylammonium salt, monoalkenyltrimethylammonium salt, oxyhydroalkylenetrimethyl chloride And ammonium salts. Specifically, monoalkyltrimethylammonium bromide such as dodecyltrimethylammonium bromide and hexadecyltrimethylammonium bromide, dodecyltrimethylammonium chloride, hydrogenated beef tallow alkyltrimethylammonium chloride, chlorinated hardened palm oil alkyltrimethylammonium chloride, cetyltrimethyl chloride Examples thereof include monoalkyltrimethylammonium chloride such as ammonium, stearyltrimethylammonium chloride, and behenyltrimethylammonium chloride, and monoalkyltrimethylammonium sulfate such as ethyl behenyltrimethylammonium sulfate. In addition, monoalkenyltrimethylammonium chloride such as oleyltrimethylammonium chloride, hydrocarbon oxyalkylenetrimethylammonium chloride such as octadecyloxypropyltrimethylammonium chloride, and the like (here, “hydrocarbonoxyalkylene” refers to the group “R ³ -O-R ⁴ - means ")..

  It has been found that when the component (A) and the aliphatic alcohol (component (B)) are used in combination, the flexibility effect of the component (A) is further increased.

  Further active ingredients include softeners, various vitamins such as vitamin C and vitamin E, amino acids such as glycine, aspartic acid, arginine, alanine, cystine, cystine, aloe extract, amacha extract, ashitaba extract, karin extract, cucumber extract Plant extract extracts such as extract, horsetail extract, tomato extract, wild rose extract, loofah extract, lily extract, and spinach extract, chitosan, urea, honey, royal jelly and the like can be used. Components such as various vitamins and plant extracts are preferably contained in the active ingredient in an amount of 0.000001 to 0.001% by weight.

  Further, sublimation components such as menthol, camphor, and cyclohexanol can be added to the active component at a ratio of 3% or less.

  On the other hand, the thin paper of the present invention is not limited by the manufacturing method. However, in the case of a product form to be folded and stacked, for example, in case of a box-type tissue paper, a folding device such as an interfolder is provided after applying a chemical solution to the produced base paper. Rather than folding in the folding device, the chemical solution is applied in the process of transporting the base paper for folding in the folding device, so that it can be manufactured efficiently and the chemical solution and moisture are less evaporated so that a product with stable quality can be manufactured. This is preferable. An example of the latter method is Japanese Patent Application No. 2004-251874 filed by the present applicant.

  In any case, the above-mentioned components can be contained in the base paper by a method such as internal addition, external addition or transfer.

Various two-ply shoe papers (Examples 1 to 15 and Comparative Examples 1 to 8) shown in Tables 1 to 4 were produced, and various physical properties were measured and calculated, and sensory evaluation was performed.
The chemical stock solution used was composed of 92% by weight of the active ingredient excluding the powder and 8% of the water content. It contained 0.0% by weight.
Moreover, the used powder was two types, talc (Takeoka Chemical Co., Ltd. “TT” average particle size: 7 μm, particle shape: plate shape) and corn starch (average particle size: 20 μm, particle shape: spherical).
Furthermore, the base paper used was 19 g / m ^{2 in} US basis weight (1 ply), 50% NBKP content, 650 ml of pulp freeness, 15 kg / t of internal paper strength agent (vs. pulp slurry), vertical The directional dry paper force was 298 cN / 25 mm, the horizontal dry paper force was 70 cN / 25 mm, the vertical wet paper force was 169 cN / 25 mm, and the horizontal wet paper force was 50 cN / 25 mm.
The physical properties were measured under the conditions defined in JIS P 8111 except for the moisture content. Regarding the sensory evaluation of the soft feeling, 30 subjects gave a soft feeling when touching the surface of the paper with 30 hands (5 points: soft, 4 points: slightly soft, 3 points: soft feeling too much No score, 2 points: slightly hard, 1 point: hard), and the average score was taken as the evaluation value. In addition, for sensory evaluation of smoothness, 30 subjects gave a smooth feel when touching the surface of paper with 30 hands (5 points: feel smoothness, 4 points: feel somewhat smoothness) 3 The points were scored with 2 points: slightly rough, 1 point: rough, and the average score was used as the evaluation value. The average deviation MMD of the friction coefficient was measured using “Friction Tester KESSE” manufactured by Kato Tech Co., Ltd. The larger the MMD value, the less smooth or rough it is. The softness was measured based on the handle ohm method according to JIS L1096 E method.

  As can be seen from Table 1, Examples 1 to 4 according to the present invention differed from Comparative Examples 1 to 9 in that both softness and smoothness were achieved.

  The present invention is applicable to thin paper such as tissue paper, toilet paper, kitchen paper, and crepe paper.

Claims (3)

  As a main component with respect to the base paper, talc having an average particle size (D50) by laser diffraction scattering particle size distribution of 3 to 15 μm is 10 to 30% by weight, softener for paper is 3 to 18% by weight, and moisturizing component is 60%. A medicinal solution-containing thin paper containing -80%.   The medicinal solution-containing thin paper according to claim 1, wherein the moisturizing component is glycerin.   The medicinal solution-containing thin paper according to claim 1 or 2, which does not contain an adhesive component.