JP2007143764A - Sanitary tissue paper and method for manufacturing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sanitary tissue paper where sticky feeling or sticking to the skin of a user are suppressed, and to provide a manufacturing method of the sanitary tissue paper. <P>SOLUTION: A chemical containing a lotion component is applied to the surface base material paper. As the chemical, a chemical in which a powder component is distributed and which does not contain an adhesive component is used. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a 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.

If hygienic thin paper such as tissue paper is frequently used, for example, for biting the nose, rough skin may occur. Therefore, in order to reduce this rough skin as much as possible, in recent years, sanitary thin paper in which a chemical solution containing a lotion component is applied to the surface of the base paper has been developed and marketed (see, for example, Patent Document 1 and Patent Document 2). ).
However, sanitary thin paper coated with a chemical containing this lotion component is effective in reducing rough skin, but sometimes gives a sticky feeling to the user. In particular, in hot and humid summers, there is a risk that it may stick to the user's skin, overcoming the feeling of stickiness, and prevent smooth use such as biting the nose.
JP 2005-237745 A JP 2004-187970 A

  SUMMARY OF THE INVENTION The main problem to be solved by the present invention is to provide a sanitary thin paper with reduced stickiness and sticking to the user's skin, and a method for producing the sanitary thin paper.

The present invention that has solved this problem is as follows.
[Invention of Claim 1]
A sanitary thin paper coated with a chemical containing a lotion component on the surface of a base paper,
A sanitary thin paper, wherein the chemical solution has a powder component dispersed therein and does not contain an adhesive component.

[Invention of Claim 2]
The sanitary thin paper according to claim 1, wherein the chemical solution includes an oily component.

[Invention of Claim 3]
The sanitary thin paper according to claim 1 or 2, wherein the powder component comprises at least one of inorganic particles and organic particles, and has an average particle diameter of more than 35 µm and 200 µm or less.

[Invention of Claim 4]
The sanitary thin paper according to any one of claims 1 to 3, wherein the chemical solution is partially applied so as to have design properties.

[Invention of Claim 5]
A method for producing sanitary thin paper by applying a chemical solution containing a lotion component on the surface of a base paper,
As the chemical solution, a powder component is dispersed and does not contain an adhesive component,
A method for producing sanitary thin paper, wherein the chemical solution is partially applied by roll transfer so as to have design properties.

[Invention of Claim 6]
The said chemical | medical solution is a manufacturing method of the sanitary thin paper of Claim 5 containing an oil-based component.

[Invention of Claim 7]
The method for producing sanitary thin paper according to claim 5 or 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 200 µm or less.

  According to this invention, it becomes a sanitary thin paper with which a sticky feeling and the sticking to the user's skin were suppressed, and its manufacturing method.

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, paper towel, paper napkin, kitchen paper and the like.

[Structure and manufacturing method]
As for the sanitary thin paper of this form, the chemical | medical solution containing a lotion component is apply | coated to the base paper surface similarly to the conventional sanitary thin paper. However, this chemical solution has the characteristics that the powder component is dispersed and the adhesive component is not included. If the powder component is dispersed, stickiness and sticking to the user's skin can be suppressed. Further, if the adhesive component is not included, the adhesive does not harden and the sanitary thin paper is not stiff, so that the purpose of applying the chemical solution containing the lotion component, that is, the purpose of reducing skin roughness, is not likely to be hindered. 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 suppressing effect and the like can be reliably obtained.

  In this form, the above chemical | medical solution can be apply | coated with respect to the one or both surface whole surface of base paper. However, even if the chemical solution is applied partially (on a part of the surface of the base paper), the sticky feeling suppression effect by the powder component can be sufficiently obtained. Rather, partial application is preferable 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.

Moreover, it is preferable to perform partial application | coating of this chemical | medical solution so that it may have design property. This is because it becomes a sanitary thin paper with excellent design.
Thus, the method of partially applying the chemical solution so as to have design properties is not particularly limited. For example, spray coating, gravure coating, flexographic coating, etc. can be used. However, it is preferable to apply by roll transfer. It is because there are few restrictions of a design and it can apply | coat correctly. More preferably, if a chemical solution is colored in advance and applied by roll transfer, a design with a colored 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.

  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 for base paper, manufacturing method, etc.]
In the sanitary thin paper of this embodiment, the raw material of the base paper is not particularly limited. For example, an appropriate raw material can be used according to uses such as tissue paper and toilet paper.

  When using pulp fiber as a raw material, as this pulp fiber (raw material pulp), for example, wood pulp, non-wood pulp, synthetic pulp, waste paper pulp, etc., more specifically, groundwood pulp (GP), Mechanical pulps such as Stone Grand Pulp (SGP), Refiner Grand Pulp (RGP), Pressurized Ground Pulp (PGW), Thermomechanical Pulp (TMP), Chemi Thermomechanical Pulp (CTMP), Bleach Chemi Thermomechanical Pulp (BCTMP) MP), chemical mechanical pulp (CGP), semi-chemical pulp (SCP), hardwood bleached kraft pulp (LBKP), softwood bleached kraft pulp (NBKP) and other kraft pulp (KP), soda pulp (AP), sulfite Pulp (SP), chemical pulp such as dissolving pulp (DP) (C ), Synthetic pulp made from nylon, rayon, polyester, polyvinyl alcohol (PVA), etc., deinked pulp (DIP), waste paper pulp such as waist pulp (WP), ground pulp (TP), cotton, flax, hemp, Select one or several types from rag pulp, straw pulp, esparto pulp, bagasse pulp, bamboo pulp, kenaf pulp and other auxiliary pulps such as bast pulp, etc. Can be used.

  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. In this papermaking, for example, suitable chemicals such as a dispersant, caustic soda, aqueous ammonia and other pH adjusters, antifoaming agents, preservatives, fluorescent dyes, mold release agents, water resistance agents, flow modifiers, yield improvers, etc. Can be added.

[Lotion ingredient]
The lotion ingredient used in the sanitary thin paper of this form is mainly intended to increase the touch (texture), moisturize and soften, reduce the irritation to the skin of the pulp fiber, or increase the moisturizing feeling. To do.

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

  Moreover, a softness | flexibility can be increased more by adding a softening agent component in a chemical | medical 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.

  Examples of the anionic surfactant include carboxylate-based, sulfonate-based, sulfate ester-based and phosphate ester-based surfactants. However, it is particularly preferable to use an alkyl phosphate ester salt.

  Nonionic surfactants include polyhydric alcohols such as sorbitan fatty acid esters, diethylene glycol monostearate, diethylene glycol monooleate, glyceryl monostearate, glyceryl monooleate, propylene glycol monostearate, mono fatty acid esters, N- (3 -Oleirosoxy-2-hydroxypropyl) diethanolamine, polyoxyethylene hydrogenated castor oil, polyoxyethylene sorbitan beeswax, polyoxyethylene sorbitan sesquistearate, polyoxyethylene glyceryl monooleate, polyoxyethylene monostearate, polyoxyethylene mono Examples include oleate, polyoxyethylene lauryl ether, polyoxyethylene monolaurate, polyoxyethylene cetyl ether Rukoto can.

  Examples of the cationic surfactant include quaternary ammonium salts, amine salts, and amines.

  Examples of zwitterionic surfactants include aliphatic derivatives of secondary or tertiary amines, heterocyclic secondary or tertiary amines containing carboxy, sulfonate, sulfate, and the like. it can.

  As an addition rate, 0.5 to 20%, preferably 1 to 7%, of the total mass of the chemical solution is added. If it is less than 0.5%, the softening effect due to the softening agent component is hardly exhibited. Conversely, if it exceeds 20%, the softening effect is exhibited, but the synergistic effect with the softening effect of the lotion component described above. As a result, the paper strength of the sanitary thin paper is weakened and may be torn during use.

If the chemical | medical solution of this form contains an oil-based component, it will become a more preferable thing. When an oily component is included, the moist feeling is excessive and stickiness is suppressed. Examples of the oil component include hydrocarbons such as liquid paraffin and squalane, oils and fats such as olive oil, camellia oil, castor oil, soybean oil, palm oil, palm oil and beef tallow, waxes such as beeswax, carnauba wax and lanolin. And higher alcohols such as cetyl alcohol, stearyl alcohol and olein alcohol, and esters such as isopropyl myristate and isopropyl palmitate.
The blending mass of the oil component is 3 to 40%, preferably 10 to 35% of the total mass of the chemical solution.

  Moreover, components, such as vitamin C, vitamin E, collagen, can be mix | blended with the chemical | medical solution containing the above lotion component, for example. This kind of component has a function of enhancing a moist feeling. Vitamin C and vitamin E also function as antioxidants. Vitamin E is a component with a strong reducing power and has an antioxidative action that eliminates active oxygen and free radicals or prevents the generation of lipid peroxide. Therefore, vitamin E functions as a chemical liquid 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 a sebum antioxidant effect. Vitamin C has the action of reducing vitamin E, so if you use both vitamin C and vitamin E, vitamin C works as an auxiliary to vitamin E and reduces vitamin E oxidized by active oxygen, The strong sebum antioxidant action of vitamin E will be maintained. 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.

(Emulsifier component)
In order to disperse the components in the chemical solution more uniformly, an emulsifier component may be added. As the emulsifier component, an anionic surfactant, a nonionic surfactant, a cationic surfactant and an amphoteric surfactant can be appropriately selected and used, and an anionic surfactant is particularly suitable. is there. Specific examples of each surfactant are the same as those of the softener component described above.
As an addition rate, 0.5 to 20%, preferably 1 to 7% of the total mass of the chemical components is added. When the content is less than 0.5%, the effect of dispersibility due to the emulsifier component is difficult to be exhibited. Conversely, when the content exceeds 20%, the physical properties of the chemical solution change, the viscosity of the chemical solution increases, and the chemical solution is uniformly applied. There is a fear that it will be difficult.

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 at a ratio of 1% or less.
Moreover, the chemical | medical solution containing the above lotion component does not become skin alkaline even if it makes it contact with skin as pH is 5.0-6.0, and chemical | medical solution pH The rough skin by the influence of is effectively prevented. A particularly preferred pH range is 5.3 to 5.7.
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, citric acid, malic acid, lactic acid, or the like can be used.
The liquid solution containing the lotion component of this embodiment is a non-ionic interface of 3 to 40% by weight of liquid paraffin, 40 to 85% by weight of polyhydric alcohols, 0 to 10% by weight of saccharides, and further 10% or less if necessary It is preferable to use an active agent as a main ingredient.

  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, when the blending ratio of the liquid paraffin exceeds 40% by mass, the sticky feeling is suppressed, but the moist feeling due to the polyhydric alcohols 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, the oil content of the skin is not excessively removed by the polyhydric alcohol and the oil removal of the skin is suppressed by the liquid paraffin. A good moist feeling can be obtained.

When the blending ratio of the polyhydric alcohol is less than 40% by mass, the wiping effect and moist feeling are inferior. When the blending ratio of the polyhydric alcohol exceeds 85% by mass, the amount of other components added is reduced, and the balance of the overall characteristics is deteriorated. In addition, the strength of the resulting sanitary thin paper is reduced and easily broken, and a sticky feeling is generated.
The polyhydric alcohol is preferably composed of glycerin, propylene glycol or a mixture thereof.

When the blending ratio of the saccharide exceeds 10% by mass, the moist feeling is overemphasized and stickiness is felt.
As saccharides, what consists of sorbitol, glucose, or these mixtures is preferable.

[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, processed starch, corn starch, wheat flour, potato starch, rice starch, wheat flour protein and the like can be exemplified.

  However, the powder component is composed of at least one of inorganic particles and organic particles, and the average particle diameter is preferably more than 35 μm and not more than 200 μm, more preferably 40 to 100 μm. . If the average particle size of the powder component is 35 μm or less, the effect of suppressing sticking to the skin is poor, and a sticky feeling remains. On the other hand, when the average particle diameter of the powder component exceeds 200 μm, although the sticking to the skin can be suppressed, the rough feel of the powder component is strongly felt and the usability may be deteriorated.

[Antiviral agent]
In the sanitary thin paper of this embodiment, the type of antiviral agent is not particularly limited. Either natural (contained in components in living bodies (animals and plants)) or non-natural antiviral agents can be used. Specifically, for example, monoterpene hydrocarbons contained in plant extract components such as ocimene, camphene, limonene, sabinene, myrcene, terpinene, pinene, and cymene and monoterpenes such as citronellol, geraniol, isopulegol, linalool, and terpineol. Phenols such as terpene alcohols, anethole, carvacrol, eugenol, thymol, paracresol, and cavicol, phenol ethers such as t-anethole, chavicol methyl ether, and safrole, acetaldehyde, citral, citronellal, geranial, perilaldehyde, valeranal Aldehydes such as acetophenone, camphor, jasmon, note caton, menthone, Fencon, carvone, pregon etc. As appropriate, one or several kinds of medicinal components such as catechins, proanthocyanidins, flavones, flavanones, anthocyanins, phenols, flavonoids such as flavonols, etc. You can select and use. In addition to the above, for example, organic acids such as ascorbic acid, carboxylic acid, citric acid, anionic surfactants, cationic surfactants, amphoteric surfactants, nonionic surfactants, etc. may be used. it can.

  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 a microcapsule, there is no such a risk. 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 the antiviral agent.

[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. In the case of a plurality of plies, the chemical solution may be applied only to the base paper constituting the surface, or the chemical solution may be applied to all the base papers. For example, when using 2 ply tissue paper, it is preferable that the base weight (basis weight) of each base paper (one sheet) based on JIS P 8124 is 10 to 50 g / m ^2. More preferably, it is 25.0 g / m ² . If the basis weight is less than 10 g / m ² , papermaking becomes difficult. On the other hand, if the basis weight exceeds 50 g / m ² , the softness is lowered, and the usability and the performance of pulling out (pop-up) from the storage box are lowered. Furthermore, when using it as a tissue paper, it is preferable that the paper thickness in a set of two stacked sheets is 90 to 450 μm, and more preferably 100 to 300 μm. If the paper thickness is too thin, the feeling of paper thinness felt by the user becomes remarkable, and the water-absorbing property is poor and the function as tissue paper is lowered. On the other hand, when the paper thickness is too thick, the drawer (pop-up) performance is deteriorated when a predetermined number of sheets are stored in a storage box to obtain a product.

  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 vertical direction, particularly 280 to 310 cN / 25 mm, and 40 cN / 25 mm in the horizontal direction. As described above, it is particularly preferable to use one having a thickness of 60 to 80 cN / 25 mm. If the dry paper strength of the base paper is too weak, troubles such as tearing and elongation are likely to occur during production, and if it is too high, the touch becomes stiff when used.

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 whole chemical solution, respectively, mass% of the powder component applied to the base paper, and the chemical component (excluding moisture) ) About the Example which changed the mass% and the average particle diameter (micrometer) of the powder component, sensory evaluation (moist feeling, non-stickiness, comprehensive evaluation) which made 50 evaluators was performed. The conditions and results are shown in Table 1.
Regarding “moist feeling”, I felt 5 when I felt moist, 4 when I felt moist, 3 when I felt neither, and I did n’t feel much moist. The case is 2 and the case where there is no moist feeling is 1. In addition, regarding “no stickiness”, 5 is felt when there is no stickiness, 4 is felt when there is not much stickiness, 3 is felt when neither is felt, and there is a slight stickiness. 2 and 1 when it felt sticky. Furthermore, for “Comprehensive Evaluation”, ◎ if you feel very good, ○ if you feel good, △ if you feel normal, × if you feel bad, × if you feel very bad It was set to 5 grade evaluation made into x.

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

Claims (7)

A sanitary thin paper coated with a chemical containing a lotion component on the surface of a base paper,
A sanitary thin paper, wherein the chemical solution has a powder component dispersed therein and does not contain an adhesive component.   The sanitary thin paper according to claim 1, wherein the chemical solution includes an oily component.   The sanitary thin paper according to claim 1 or 2, wherein the powder component comprises at least one of inorganic particles and organic particles, and has an average particle diameter of more than 35 µm and 200 µm or less.   The sanitary thin paper according to any one of claims 1 to 3, wherein the chemical solution is partially applied so as to have design properties. A method for producing sanitary thin paper by applying a chemical solution containing a lotion component on the surface of a base paper,
As the chemical solution, a powder component is dispersed and does not contain an adhesive component,
A method for producing sanitary thin paper, wherein the chemical solution is partially applied by roll transfer so as to have design properties.   The said chemical | medical solution is a manufacturing method of the sanitary thin paper of Claim 5 containing an oil-based component.   The method for producing sanitary thin paper according to claim 5 or 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 200 µm or less.