WO2007061023A1 - Sanitary tissue paper and process for producing the same - Google Patents

Abstract

[PROBLEMS] To provide a sanitary tissue paper whose sticky feeling or adherence to the user’s skin is suppressed. [MEANS FOR SOLVING PROBLEMS] A medicinal liquid containing a lotion component is applied to the surface of a base paper. As the medicinal liquid, a medicinal liquid which contains a powder component dispersed therein and does not contain an adhesive component is used.

Description

 Specification

 Sanitary thin paper and method for producing the same

 Technical field

 The present invention relates to sanitary thin paper such as tissue paper and a method for producing the same. More specifically, the present invention relates to a sanitary thin paper in which a chemical solution containing a lotion component is applied to the surface of a base paper and a method for producing the sanitary thin paper.

 Background art

 [0002] If sanitary thin paper such as tissue paper is frequently used, for example, to bite the nose, rough skin may occur. Therefore, in order to reduce this rough skin as much as possible, in recent years, sanitary thin paper with a chemical solution containing a lotion component applied to the surface of the base paper has been developed and marketed (for example, Patent Document 1 and Patent Document 2). reference.).

 [0003] However, the sanitary thin paper coated with the chemical solution containing the lotion component may give a sticky feeling to the user who is effective in reducing rough skin. In particular, in hot and humid summers, there was a risk of sticking to the user's skin over the problem of stickiness and smooth use such as biting the nose.

 Patent Document 1: Japanese Patent Laid-Open No. 2005-237745

 Patent Document 2: JP 2004-187970 A

 Disclosure of the invention

 Problems to be solved by the invention

[0004] The main problem to be solved by the present invention is to provide a sanitary thin paper in which stickiness to the user's skin is suppressed and a method for producing the same.

 Means for solving the problem

[0005] The present invention that has solved this problem is as follows.

 [Invention of Claim 1]

A sanitary thin paper coated with a chemical solution containing a lotion component on the surface of a base paper, wherein the chemical solution has a powder component dispersed therein and does not contain an adhesive component. Characteristic sanitary thin paper.

 [0006] [Invention of claim 2]

 The sanitary thin paper according to claim 1, wherein the chemical solution contains an oily component.

[0007] [Invention of claim 3]

 The sanitary thin paper according to claim 1 or 2, wherein the powder component is composed of at least one of inorganic particles and organic particles and has an average particle diameter of more than 35 µm and not more than 200 am. .

[0008] [Invention of claim 4]

 The sanitary thin paper according to any one of claims:! To 3, wherein the chemical solution is partially applied so as to have a design.

[0009] [Invention of claim 5]

 A method for producing sanitary thin paper by applying a chemical solution containing a lotion component to the surface of a base paper,

 As the chemical solution, a powder component is dispersed and an adhesive component is not used.

 A method for producing sanitary thin paper, characterized in that the chemical solution is partially applied by roll transfer so as to have a design.

[Invention of claim 6]

 6. The method for producing sanitary thin paper according to claim 5, wherein the chemical solution contains an oily component.

[0011] [Invention of claim 7]

 The hygiene according to claim 5 or claim 6, wherein the powder component is composed of at least one of inorganic particles and organic particles, and has an average particle diameter of more than 35 µm and not more than 200 µm. A method for producing thin paper.

 The invention's effect

 [0012] According to the present invention, a sticky sensation becomes a sanitary thin paper in which sticking to the user's skin is suppressed, and a method for producing the sanitary thin paper.

 BEST MODE FOR CARRYING OUT THE INVENTION

Next, an embodiment of the present invention will be described. [Use]

The use of the sanitary thin paper of this embodiment is not particularly limited. For example, it can be used as tissue paper '~, toilet paper' ~ no ヽ '~, pe' ~ no ヽ '~ tale nore-page ¹ ~ no ヽ' ~ nafkin-kitchen page '~ no ヽ * ~.

[Structure and Manufacturing Method]

 In the sanitary thin paper of this embodiment, a chemical solution containing a lotion component is applied to the surface of the base paper in the same manner as the conventional sanitary thin paper. However, this chemical has the characteristics that the powder component is dispersed and the adhesive component is not included. If a noda component is dispersed, stickiness can be prevented from sticking to the user's skin. Also, if the adhesive component is not included, the adhesive will not harden and the sanitary thin paper will not be stiff, so the purpose of applying the chemical solution containing the lotion component, that is, the purpose of reducing rough skin, may not be disturbed. ,. Furthermore, since the powder component is dispersed in the chemical solution containing the lotion component, the powder component is fixed to the base paper surface by the viscosity, surface tension, etc. of the chemical solution containing the lotion component even without the adhesive component. As a result, a sticky feeling suppression effect and the like can be reliably obtained.

 [0015] In the present embodiment, the above chemical solution can be applied to the entire surface of one or both surfaces of the base paper. However, even if the chemical solution is applied partially (on a part of the surface of the base paper), the effect of suppressing stickiness due to a single noda component can be sufficiently obtained. Rather, partial application is preferred from the viewpoint of reducing manufacturing costs. The partial application of the chemical solution is usually 5 to 80%, preferably 20 to 60%, over the entire surface of the base paper.

 [0016] The partial application of the chemical solution is preferably performed so as to have a design. In the present invention, design is defined as depicting a pattern. Examples of patterns include polygons such as triangles and rectangles, circles and ellipses, curves and straight lines, butterflies and birds, fish, sky, sea, clouds, etc. It is done. This makes it a sanitary thin paper with excellent design.

[0017] Thus, the method of partially applying the chemical solution so as to have a design is not particularly limited. For example, spray coating, gravure coating, flexographic coating, etc. can be used. However, it is preferably applied by roll transfer. There are few design restrictions. This is because it can be applied accurately. More preferably, if a chemical solution is colored in advance and applied by roll transfer, a design with a color pattern can be applied to a desired portion. In addition, for the method of applying the chemical solution, for example, JP-A-7-216786 can be referred to.

 [0018] The sticky feeling suppression effect by the powder component can be adjusted by changing the application amount of the powder component in addition to changing the application area, the application range, and the like. The coating amount (mass) of the powder component is usually 0.5 to 10%, preferably 2 to 5% of the base paper mass.

 [Raw material of base paper, production method, etc.]

 In the sanitary thin paper of this embodiment, the raw material of the base paper is not particularly limited. For example, appropriate raw materials can be used depending on the use of tissue paper, toilet paper, and the like.

 [0020] When pulp fiber is used as a raw material, the pulp fiber (raw pulp) includes, for example, wood pulp, non-wood pulp, synthetic pulp, waste paper pulp, and the like, more specifically, groundwood pulp ( GP), Stone Grand Pulp (SGP), Refiner Grand Pulp (RGP), Pressurized Ground Pulp (PGW), Thermomechanical Pulp (TMP), Chemi Thermomechanical Pulp (CTMP), Bleach Chemi Thermomechanical Pulp (BCTMP) Mechanical pulp (MP), chemical mechanical pulp (CGP), semi-chemical pulp (SCP), kraft pulp (KP) such as hardwood bleached kraft pulp (LBKP), softwood bleached kraft pulp (NBKP), soda pulp (AP), sulfite pulp (SP), chemical pulp (CP) such as dissolving pulp (DP), nylon, rayon, polyester, polybulal alcohol (PVA), etc. Waste paper pulp such as pulp, deinked pulp (DIP), waist pulp (WP), waste pulp (TP), cotton, flax, hemp, jute, manila hemp, ramie, etc. It is possible to select and use one or several kinds of auxiliary pulps such as pulp, bagasse pulp, bamboo pulp, kenaf pulp, and other auxiliary pulps such as bast pulp.

[0021] Raw materials such as pulp fibers are used as a base paper through, for example, a known papermaking process, specifically, a wire part, a press part, a dryer part, a size press, a calendar part, and the like. The In this papermaking, for example, appropriate chemicals such as a pH adjuster such as a dispersant, caustic soda, and aqueous ammonia, an antifoaming agent, an antiseptic, a fluorescent dye, a mold release agent, a water resistant agent, a flow modifier, and a yield improver. Can be added.

 [Lotion ingredient]

 The lotion ingredient used in this form of sanitary thin paper improves the touch (texture), moisturizes and softens the skin, or softens the pulp fiber irritation and enhances the moisturizing feeling. This is the main focus.

 [0023] In the present embodiment, the type of the lotion component is not particularly limited. For example, moisturizing lotion ingredients include glycerin, diglycerin, polyglycerin, polyethylene glycol, sorbit, propylene glycol, 1,3-butylene glycol, polyhydric alcohols such as ethylene glycol and diethylene glycol, fructose, glucose, oligosaccharide Examples thereof include saccharides such as oligosaccharide alcohol, Sonorebitol, glucose, maltitol, trehalose, reduced starch hydrolyzate, glycine betaine, pyrrolidone carboxylic acid, pyrrolidone carboxylate, sodium lactate and the like.

 [0024] Further, the flexibility can be further increased by adding a softener component to the chemical solution. A typical example of the softener component is a surfactant. As the surfactant, an anionic surfactant, a nonionic surfactant, a cationic surfactant and a zwitterionic surfactant can be appropriately selected and used.

 [0025] Examples of anionic surfactants include carboxylate-based, sulfonate-based, sulfate ester-based, and phosphate ester-based surfactants. However, it is particularly preferred to use alkyl phosphate ester salts.

[0026] Nonionic surfactants include polyhydric alcohols such as sorbitan fatty acid esters, diethylene glycol monostearate, diethylene glycol monosoleate, glyceryl monostearate, glyceryl monosoleate, and propylene glycol monostearate. Fatty acid ester, N— (3-Oleirosiki_2-hydroxypropyl) diethanolamine, polyoxyethylene hydrogenated castor oil, polyoxyethylene sorbite dense wax, polyoxyreoxyethylene monostearate, polyoxyethylene monooleate, polyoxyethylene Examples include lenlauryl ether, polyoxyethylene monolaurate, polyoxyethylene cetinole ether and the like.

[0027] Examples of cationic surfactants include quaternary ammonium salts, amine salts, and amines.

 [0028] Examples of zwitterionic surfactants include aliphatic derivatives of secondary or tertiary amines containing carboxy, sulfonate, sulfate, aliphatic derivatives of heterocyclic secondary or tertiary amines, and the like. It can be illustrated.

 [0029] As an addition rate, 0.5 to 20%, preferably:! To 7%, of the total mass of the chemical solution is added. If it is less than 5%, the softening effect of the softening agent component is difficult to express. Conversely, if it exceeds 20%, the softening effect is exhibited, but the synergistic effect with the softening effect of the lotion component described above. Depending on the fruits, the paper strength of sanitary thin paper is weakened and may be torn during use.

 [0030] The chemical solution of the present embodiment is more preferable when it contains an oil component. When oily components are included, the moist feeling becomes excessive and stickiness is suppressed. Examples of oil components include hydrocarbons such as liquid paraffin and squalane, olive oil, camellia oil, castor oil, soybean oil, palm oil, oils such as beef oil, beeswax, carnaparou, lanolin and the like. Examples include waxes, higher alcohols such as cetyl alcohol, stearyl alcohol, and olein alcohol, and esters such as isopropyl myristate and isopropyl palmitate.

 [0031] The blending mass of the oil component is 3 to 40%, preferably 10 to 35% of the total mass of the chemical solution.

[0032] In addition, for example, vitamin C, vitamin E, collagen and the like can be blended in the chemical solution containing the above lotion components. This kind of ingredient has the function of enhancing moisture. Vitamin C and vitamin E also function as antioxidants. Vitamin E is a highly reducing component and has an antioxidant action that eliminates free radicals and prevents the formation of lipid peroxides. Therefore, vitamin E functions as a chemical solution stabilizer, and exhibits an antioxidative effect on skin sebum and a blood circulation promoting effect. There is also a moisturizing function. Vitamin C, like vitamin E, has sebum antioxidant activity. Vitamin C has the effect of reducing vitamin E. Therefore, when both vitamin C and vitamin E are used, the vitamin E acts as a supplement to vitamin E and reduces vitamin E oxidized by active oxygen. , Bitami This will maintain the strong sebum's antioxidative action. Collagen forms 90% of the dermis of the skin, and when this decreases, the skin loses moisture and tension. Therefore, it exhibits a moisturizing effect that moisturizes the skin when it comes into contact with the skin.

[0033] [Emulsifier component]

 In order to disperse the components in the chemical solution more uniformly, an emulsifier component may be added. The emulsifier component can be selected as appropriate from among the anionic surfactants, nonionic surfactants, cationic surfactants and zwitterionic surfactants. Surfactants are preferred. Specific examples of each surfactant are the same as those of the softener component described above.

 [0034] As an addition rate, 0.5 to 20%, preferably 1 to 7%, of the total mass of the chemical components is added.

 If the content is less than 5%, the effect of dispersibility due to the emulsifier component is difficult to develop. Conversely, if the content exceeds 20%, the physical properties of the chemical solution change, the viscosity of the chemical solution increases, and the chemical solution is applied uniformly. There is a fear that it will be difficult.

 [0035] In addition to the above, for example, secondary additives such as coloring agents, preservatives, and antioxidants can be added to the chemical solution containing the lotion component of this embodiment in a proportion of 1% or less.

 [0036] In addition, if the chemical solution containing the above lotion components is weakly acidic with a pH of 5.0 to 6.0, the skin does not become alkaline even when brought into contact with the skin. The rough skin due to the effect of chemical pH is effectively prevented. A particularly preferred pH range is 5.3 to 5.7.

 [0037] The pH can be adjusted, for example, by adding an acidic or basic pH adjusting agent to the chemical solution. When the chemical solution is strongly acidic, an aqueous sodium hydroxide solution or an aqueous potassium hydroxide solution can be used. On the other hand, when the chemical solution is neutral or alkaline, citrate, malic acid, lactic acid or the like can be used.

 [0038] The chemical solution containing the lotion component of the present embodiment comprises 3 to 40% by mass of liquid paraffin, 40 to 85% by mass of polyhydric alcohols, 0 to 10% by mass of saccharides, and 10% by mass if necessary. The main component is preferably the following nonionic surfactant.

[0039] When the blending ratio of the liquid paraffin is less than 3% by mass, the smooth feeling is lowered, the moist feeling due to the effect of the polyhydric alcohols is increased, and a sticky feeling is felt. On the other hand, if the mixing ratio of fluid paraffin exceeds 40% by mass, the sticky feeling can be suppressed, but the polyvalent alcohol The moist feeling caused by the rolls is impaired and the paper gives a hard impression. A more preferable blending ratio of liquid paraffin is 10 to 30% by mass. In this embodiment, for example, as disclosed in JP-A-2-104511, skin oil is not excessively removed by polyhydric alcohol, and skin oil removal is suppressed by liquid paraffin. You can get a good feeling of feeling.

 [0040] When the blending ratio of polyhydric alcohols is less than 40% by mass, the wiping effect and moist feeling are inferior. If the blending ratio of the polyhydric alcohol exceeds 85% by mass, the amount of additive of other components will decrease and the balance of the overall characteristics will deteriorate. In addition, the strength of the resulting sanitary thin paper decreases and it becomes easy to tear, and a sticky feeling is produced.

 [0041] The polyhydric alcohol is preferably composed of glycerin, propylene glycol or a mixture thereof.

 [0042] When the blending ratio of the saccharide exceeds 10% by mass, the moist feeling is overemphasized and stickiness is felt.

 [0043] As the saccharide, those composed of sorbitol, glucose or a mixture thereof are preferable.

 [0044] [Powder ingredient]

 In the sanitary thin paper of this embodiment, the type of the powder component is not particularly limited. For example, talc, kaolin, clay, calcium carbonate, titanium oxide, calcium stearate, zinc stearate, lithium stearate, modified starch, corn starch, wheat flour, potato starch, rice starch, wheat flour protein and the like can be exemplified.

 [0045] However, the powder component is preferably composed of at least one of inorganic particles and organic particles, and has an average particle diameter of more than 35 µm and not more than 200 µm. More preferably, it is μm. If the average particle size of the powder component is 35 zm or less, the effect of suppressing sticking to the skin is poor and a sticky feeling remains. On the other hand, if the average particle size of the powder component exceeds 200 μm, sticking to the skin can be suppressed, but the rough feel of the powder component can be strongly felt and the usability can be deteriorated.

 [0046] [Antiviral agent]

In the sanitary thin paper of this embodiment, the type of antiviral agent is not particularly limited. Natural ( Either an antiviral agent or a non-natural antiviral agent (contained in components in living organisms (animal and plant)) can be used. Specifically, for example, monoterpene hydrocarbons contained in plant extract components such as ocimene, camphene, limonene, sabinene, myrcene, terbinene, pinene, and cymene, citronellol, geraniol, isopulegol, linal mouthol, Monoterpene alcohols such as terbinolol, phenols such as anthole, strong rubachlor, eugenol, thymol, paracresol, and cavicol, phenolic ethers such as t-vanetore, thiabicol methyl ether, safrole, acetoaldehyde, citral, citronellal, Aldehydes such as geranial, perylaldehyde, and valeranal, ketones such as acetophenone, camphor, jasmon, note katon, menthone, fenkon, carvone, plegon, cariolephine One or several kinds of medicinal components such as oxides such as oxide, cineol and bisabolol oxide, catechins, proanthocyanidins, flavones, flavanones, anthocyanins, phenols, flavonoids such as flavonols, etc. Can be appropriately selected and used. In addition to the above, for example, organic acids such as ascorbic acid, carboxylic acid, and cuenic acid, anionic surfactants, cationic surfactants, amphoteric surfactants, nonionic surfactants, etc. should be used. Chisaru

 [0047] When a plant extract component is used as it is as an antiviral agent, for example, a fragrance component and the like are included together with the bactericidal component, which may give the user a sense of incongruity. However, if the antiviral agent is encapsulated in microcapsules, there is no danger of it becoming stronger. That is, the form in which the antiviral agent is encapsulated in microcapsules is a particularly useful form when the plant extract component is used as it is as an antiviral agent.

 [0048] [Others]

The sanitary thin paper of this embodiment may be one ply, two plies (a set of two stacked sheets), three plies, four plies, or more. When using multiple plies, the chemical solution may be applied only to the base paper constituting the surface, or the chemical may be applied to all base papers. Also, for example, in the case of a two-ply tissue paper, the strength of the rice bran (basis weight) based on JIS P 8124 of each base paper (1 sheet) is preferably 10 to 50 g / m ² << preferably, ˜2 5. More preferably Og / m ² . Basis weight is less than 10 g / m ^2, it is difficult to papermaking The On the other hand, if the basis weight exceeds 50 g / m ² , the softness decreases, and if it is used, the pull-out performance from the storage box (pop-up) decreases. Furthermore, in the case of tissue paper, the paper thickness of a set of two stacked sheets is preferably 90 to 450 ^ 111, more preferably 100 to 300 zm. If the paper thickness is too thin, the feeling of paper thinness felt by the user becomes remarkable, and the function as tissue paper deteriorates due to poor water absorption. On the other hand, if the paper thickness is too thick, the drawer (pop-up) performance will be inferior when a predetermined number of sheets are stored in a storage box.

 [0049] The base paper of the present invention has a dry tensile strength (hereinafter referred to as dry paper strength) specified in JIS P 8113 of 150 cN / 25 mm or more in the longitudinal direction, particularly 280 to 310 cN / 25 mm, It is preferable to use one with a direction of 40cN / 25mm or more, especially 60-80cN / 25mm. If the dry paper strength of the base paper is too low, troubles such as tearing and elongation are likely to occur during production, and if it is too high, the touch will be stiff when used.

 Example

 [0050] Next, examples of the present invention will be described.

 Change the mass% of each component (moisturizing lotion component · oil component · softener component · emulsifier component 'moisture') with respect to the entire chemical solution, respectively, and the chemical component (excluding moisture) ) Sensory evaluation (moist feeling, non-stickiness, comprehensive evaluation) with 50 evaluators was performed according to the example in which the mass% and the average particle size (μm) of the powder component were changed. It was. The conditions and results are shown in Table 1.

 [0051] As for “moist feeling”, 5 when moist feeling is felt, 4 when moist feeling is felt somewhat, 3 when feeling that it is neither, and moist feeling is not so much. 2 was given when I felt it, and 1 when I felt no moist feeling. As for “no stickiness”, 5 when there is no stickiness, 4 when there is no stickiness, 3 when it feels neither. 2 was assigned when the stickiness was felt, and 1 was assigned when the stickiness was felt. Furthermore, with regard to the “comprehensive evaluation”, ◎ indicates that it is very good, △ indicates that it is good, △ indicates that it is normal, X indicates that it is bad, and XX indicates that it is very bad A five-step evaluation was performed.

[0052] [Table 1]

 Note 1: Mass% with respect to the total chemical

Note 2: Mass% of coating amount on base paper (for chemicals, the content of all components excluding moisture)

INDUSTRIAL APPLICABILITY The present invention is applicable as a sanitary thin paper such as tissue paper in which a chemical solution containing a lotion component is applied to the base paper surface and a method for producing the sanitary thin paper.

Claims

The scope of the claims  [1] A sanitary thin paper in which a chemical solution containing a lotion component is applied to the surface of a base paper, wherein the chemical solution has a powder component dispersed therein and does not contain an adhesive component. . [2] The sanitary thin paper according to claim 1, wherein the chemical solution contains an oil component. [3] The powder component is composed of at least one of inorganic particles and organic particles, and has an average particle diameter of more than 35 μm and not more than 200 μm. Sanitary tissue paper as described.  [4] The sanitary thin paper according to any one of claims:! To 3, wherein the chemical solution is partially applied so as to have a design. [5] A method for producing sanitary thin paper by applying a chemical solution containing a lotion component to the base paper surface,  As the chemical solution, a powder component is dispersed and an adhesive component is not used.  A method for producing sanitary thin paper, characterized in that the chemical solution is partially applied by roll transfer so as to have a design. 6. The method for producing sanitary thin paper according to claim 5, wherein the chemical liquid contains an oil component. [7] The powder component is composed of at least one of inorganic particles and organic particles, and has an average particle diameter of more than 35 μm and not more than 200 μm. The manufacturing method of sanitary thin paper of description.