JP2009178473A - Sanitary tissue paper roll - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sanitary tissue paper roll excellent in functionability and design nature. <P>SOLUTION: The sanitary tissue paper roll is constituted by winding a belt-like sanitary tissue paper containing an agent and a continuous sheet having a belt-like sanitary tissue sheet to which a pattern is applied, and which is laminated adjacent the sanitary tissue paper such that the belt-like sanitary tissue paper containing the agent is located in the outermost layer and always becomes the outer peripheral surface. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a sanitary thin paper roll in which two or more sanitary thin papers continuous in a belt shape are stacked and wound into a cylindrical shape.

A sanitary thin paper roll represented by a toilet roll is provided with a pattern by printing a design or a pattern with ink or the like in order to increase customer suction.
And in the sanitary thin paper roll in which a plurality of sanitary thin papers are laminated and wound up, conventionally, the pattern imparting surface of the sanitary thin paper to which the pattern is imparted is always the outermost surface so that the pattern can be seen well from the outside. And the pattern is always positioned on the outer peripheral surface of the roll.
JP 2006-42883 A JP 2006-320688

However, in the sanitary thin paper roll of this structure, when it is cut to an appropriate length and used for wiping the skin, the part to which ink is applied becomes a part that directly touches the skin, which causes a sense of hardness. In some cases, the user misunderstood that the ink would move to the body during use or that harmful substances in the ink would directly touch the body.
In addition, sanitary thin paper rolls are impregnated with various agents such as softeners and lubricants for improving flexibility and touch, virus, bacterial growth control, bactericides for disinfection, antibacterial agents, antiviral agents, Applied sanitary thin paper may be used.

It is desirable to apply these chemicals to the part that directly touches the skin. However, as described above, in the sanitary thin paper roll having the conventional pattern, the sanitary thin paper printed with ink is located on the part. In some cases, it was difficult to use together.
For example, if a chemical is applied after printing a design or design, there is a possibility that ink bleeding may occur, and if printing is performed after applying the chemical, the chemical may be coated on the printed part and the function may not be fully demonstrated. .

On the other hand, the pattern on the sanitary thin paper is generally printed thinly from the viewpoint that the thin paper has a low basis weight, does not give a sense of anxiety to consumers as described above, and prevents softness reduction. As a result, unevenness and blurring are likely to occur particularly in large-format designs, and there may be cases where a high-class feeling is not sufficiently felt.
Therefore, the main problem of the present invention is to provide a sanitary thin paper roll having a light pattern such as a blurry pattern and a watermark pattern that can be felt even if it looks light, and also excellent in functionality such as flexibility. It is to provide.

The present invention that has solved the above-described problems and the effects thereof are as follows.
<Invention of Claim 1>
A sanitary thin paper roll in which two or more strips of sanitary thin paper are laminated and wound into a cylindrical shape,
It has a strip-like sanitary thin paper containing a drug and a strip-like sanitary thin paper with a pattern laminated adjacent to it,
A sanitary thin paper roll in which these sanitary thin papers are laminated, and a band-like sanitary thin paper containing the medicine is positioned so as to be positioned on the outermost layer so as to always constitute the outer peripheral surface of the roll.

(Function and effect)
In the sanitary thin paper roll of the present invention, the sanitary thin paper containing the medicine is different from the thin paper on which the pattern is printed, and therefore, it can be designed without compromising their compatibility. Moreover, since the effect by a chemical | medical agent is not suppressed by ink printing, the pattern provision by ink printing etc. can be performed effectively.

  Further, since the pattern is recognized from the outer surface through the sanitary thin paper containing the medicine, the ink or the like constituting the pattern is not exposed to the consumer, and the impression of direct touching is not given. The same is true even if the pattern is darkened.

  In addition, even if printing with many inks and the like, since the medicine can be contained in the sanitary thin paper on the surface, for example, since the sanitary thin paper is located, for example, by applying a softener or the like to the surface It is possible to prevent a decrease in touch feeling due to printing. That is, desired surface characteristics can be effectively imparted by the drug.

  Further, since a dark pattern can be given, color unevenness and blurring are not felt. In particular, the structure is designed so that the pattern is visible through a single sheet of sanitary thin paper, which makes it possible to create a pattern that easily recalls a light impression such as a blurry pattern or a watermark, and has an unprecedented design. It is done.

<Invention of Claim 2>
The sanitary thin paper roll according to claim 1, wherein the pattern is provided on a surface facing the sanitary thin paper containing the medicine.

(Function and effect)
The pattern is easily visible from the outer peripheral surface of the roll. Moreover, since the adhesive effect which printed the pattern etc. in the ink is obtained in manufacture, there also exists an effect which can simplify a manufacturing process.

<Invention of Claim 3>
The sanitary thin paper according to claim 1 or 2, wherein the sanitary thin paper containing the drug has an opacity of 30% to 55%.

(Function and effect)
With the opacity of the present invention, the visibility of the pattern from the outside is improved.

<Invention of Claim 4>
The sanitary thin paper roll according to any one of claims 1 to 3, wherein the pattern has a portion colored in a color different from a ground color of the sanitary thin paper.

(Function and effect)
When a portion colored in a color different from the ground color of the sanitary thin paper is provided, a color feeling can be felt and a high-class feeling can be obtained.

Further, visibility from the outside is improved. Furthermore, since the pattern imparted portion is visually recognized through the sanitary thin paper to which the chemical solution is imparted, the boundary between the ground color and the colored portion is blurred, so that it appears as a colored blurred pattern.
This blurring of the boundary becomes prominent particularly when the ground color of the sanitary thin paper to which the medicine is applied and the sanitary thin paper to which the pattern is applied are the same.

<Invention of Claim 5>
The sanitary thin paper roll according to claim 4, wherein the colored portion is formed by printing ink.

(Function and effect)
Various patterns such as contrast, color, design, and design can be easily applied. Excellent cost and ease of manufacture. Further, the ink plays the role of an adhesive, and the application of the pattern and the bonding of the adjacent sanitary thin papers can be performed at the same time, which is advantageous in manufacturing.

<Invention of Claim 6>
The sanitary thin paper roll according to any one of claims 1 to 5, wherein the sanitary thin paper has a value of 10 to 22 g / m ^{2 according} to a method for measuring a basis weight of JIS P 8124.

(Function and effect)
When it is in the range of the rice tsubo, the opacity becomes appropriate, and the design formed in the middle layer can be visually recognized through the outer layer.

  As described above, according to the present invention, there is provided a sanitary thin paper roll having an unprecedented pale pattern such as a blurred pattern and a watermark pattern and having excellent functionality such as flexibility.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
〔Construction〕
The sanitary thin paper roll according to the present invention is obtained by winding up a continuous sheet of a ply structure in which two or more strips of sanitary thin paper are laminated in a cylindrical shape.
In the continuous sheet, the number of sanitary thin paper sheets to be stacked is not particularly limited. For example, 2 sheets (2 plies), 3 sheets (3 plies), 4 sheets (4 plies), or a plurality of more than that is appropriately used. Can be changed. In particular, two or three sheets are desirable because the effect is remarkable.

In the following, the structure will be described in more detail with reference to FIG. 1 mainly using an example in which three sanitary thin papers are stacked. However, the present invention is not limited to this form.
The sanitary thin paper roll X1 of this embodiment is provided with a pattern on the strip-shaped sanitary thin paper 1 (referred to as a middle-layer sanitary thin paper) located in the middle layer, and the strip-shaped sanitary thin paper 2 and 3 (surface sanitary thin paper 2 containing a drug on the front and back). , The backside sanitary thin paper 3) is laminated to form a three-layer continuous sheet 10. The winding technique of the continuous sheet 10 and the lamination technique of each layer are based on known techniques.
And this sanitary thin paper roll X1 is wound so that the said surface sanitary thin paper 2 always becomes a winding outer peripheral surface. Therefore, the outer peripheral surface R of the sanitary thin paper roll X1 is constituted by the surface sanitary thin paper 2, Through the surface sanitary thin paper 2 constituting the outer peripheral surface R, the pattern imparted to the middle sanitary thin paper 1 is recognized from the outside.

Since the sanitary thin paper roll X1 of the present invention has a characteristic layer structure and winding structure as described above, the pattern of the middle layer sanitary thin paper 1 is visible through the surface sanitary thin paper 2 which is a single thin paper. Compared to a paper roll with a pattern directly applied to the outer peripheral surface, such as a thin paper roll, the pattern and pattern edges that make up the pattern are perceived with moderate blurring, watermarks and blurry patterns. It presents an unprecedented design that reminds us of such a light and soft impression.
In the sanitary thin paper roll X1 of this embodiment, the pattern imparted to the middle-layer sanitary thin paper pattern 1 is formed by drawing a predetermined pattern P or design P with colored ink or the like. This can be formed, for example, by known printing techniques.
Pattern formation by printing is particularly suitable because of the degree of freedom of the pattern and ease of application, but as another example of pattern application, a method of mixing paper such as colored long fibers that are different from the main raw pulp of sanitary thin paper by mixed paper technology, The method of sticking the colored paper piece etc. on the said strip-shaped sanitary thin paper can be illustrated.
In addition, the formation range, size, shape, etc. of the specific design P or the design P constituting the pattern are not particularly limited, and the design such as logo mark, numbers, characters, geometric pattern, and the appropriate size may be used. You can choose.

On the other hand, the colored portion of the pattern P or the pattern P constituting the pattern should be clearly different from the ground color of the sanitary thin paper. As the ink used for forming the pattern, a known ink used for printing sanitary thin paper such as toilet paper and tissue paper can be used regardless of dye ink or pigment ink. If a pattern is formed by printing with these inks, a design different from the ground color can be given.
Although not limited, it is desirable that the difference ΔL * of the L * value in the L * a * b * color system between the colored portion and the ground portion is 3.0 or more. The L * value can be measured using, for example, a measuring device “PF-10” manufactured by Nippon Denshoku Industries Co., Ltd.

  On the other hand, the sanitary thin paper roll X1 of the present embodiment is visible through the surface sanitary thin paper 2 that becomes the outer peripheral surface R as described above, and the pattern of the middle-layer sanitary thin paper 1 adjacent thereto is visible. Accordingly, when a pattern is applied to one surface of the middle-layer sanitary thin paper 1 by ink printing or the like in order to enhance the visibility due to the transmission of the pattern (design), the surface to be applied is the surface facing the surface sanitary thin paper 2. It is good.

  Further, the surface sanitary thin paper 2 has an opacity of 30 to 55%, preferably 35 to 45% based on JIS P 8149 so that the pattern imparted to the middle sanitary thin paper 1 is clearly visible. . With this degree of opacity, the pattern (design P) of the middle-layer sanitary thin paper can be seen from the outside of the roll, and the pattern imparted thereto can be easily recognized.

  On the other hand, in view of the problem of the present invention, it is desirable that the surface sanitary thin paper 2 does not have a pattern formed by printing, coating, or coating of ink or the like. However, this does not apply to embossed patterns.

On the other hand, the surface sanitary thin paper 2 constitutes a surface that directly touches the skin when in use, so that softening agents and lubricants that improve the feeling of touch and flexibility especially when touching the skin, suppression of the growth of viruses and bacteria, Various agents such as bactericides, antibacterial agents and antiviral agents for sterilization are contained.
As a method for including the drug, known external addition methods such as spray coating and roll transfer can be employed. The amount of drug applied and the like is appropriately adjusted according to the type of drug used.
In particular, a softening agent is desirable as the drug. Designs such as the blurring pattern and watermark pattern obtained by the layer structure and winding structure of the present invention are offset against the expression of hardness and the decrease in feel caused by the pattern imparted by printing on the middle-layer sanitary thin paper 1. This is because a soft image is strongly felt in combination with the image of. Of course, a softener and other drugs may be used in combination.

  On the other hand, the back sanitary thin paper 3 is present as a preferred form in this embodiment, but is not necessarily required. When the back sanitary thin paper 3 is provided, the middle sanitary thin paper 1 is covered with the front and back thin paper, and it is desirable to provide the ink because the ink is not reliably exposed to the outer surface and contact with the skin is prevented.

  In addition, the back sanitary thin paper 3 can also contain an appropriate drug in the same manner as the front sanitary thin paper 1. The drug is not necessarily the same as the surface sanitary thin paper, and can be appropriately different.

  As mentioned above, although the structural example of the sanitary thin paper roll X1 of this invention was demonstrated referring the example which wound up the continuous sheet 10 of 3 layer lamination, the sanitary thin paper roll of this invention is the said surface which forms a roll outer peripheral surface. A middle-layer sanitary thin paper having a pattern is positioned and laminated directly under the sanitary thin paper so that the pattern can be recognized from the outside through the surface sanitary thin paper. Therefore, an appropriate number of layers, for example, 4 layers When configured as described above, an appropriate number of belt-like sanitary thin papers may be interposed between the middle-layer sanitary thin paper and the back sanitary thin paper provided with the pattern. If there are two layers, the back sanitary thin paper may be omitted.

[About each sanitary thin paper]
Next, each sanitary thin paper 1, 2, 3 constituting the sanitary thin paper roll X1 according to the present invention will be further described. Each sanitary thin paper can be produced by making a papermaking raw material mainly composed of raw pulp through a known papermaking process, specifically, a wire part, a press part, a dryer part, a size press, a calendar part, etc. .
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.

  The raw material pulp used for the papermaking raw material is not particularly limited. An appropriate raw material pulp can be selected and used according to the use of the water-degradable sanitary thin paper. Examples of the raw material pulp include wood pulp, non-wood pulp, synthetic pulp, and waste paper pulp. More specifically, ground pulp (GP), stone grand pulp (SGP), refiner ground pulp (RGP), and pressure type Ground pulp (PGW), thermomechanical pulp (TMP), chemithermomechanical pulp (CTMP), bleached chemithermomechanical pulp (BCTMP) and other mechanical pulp (MP), chemical mechanical pulp (CGP), semi-chemical pulp ( Chemical pulp (SCP), kraft pulp (KP) such as hardwood bleached kraft pulp (LBKP), softwood bleached kraft pulp (NBKP), soda pulp (AP), sulfite pulp (SP), dissolved pulp (DP), etc. CP), nylon, rayon, polyester, polyvinyl alcohol Synthetic pulp made from (PVA), deinked pulp (DIP), waste paper pulp such as waist pulp (WP), ground pulp (TP), cotton, flax, hemp, jute, manila hemp, ramie, etc. One or several types can be appropriately selected and used from rag pulp, straw pulp, esparto pulp, bagasse pulp, bamboo pulp, kenaf pulp, and other auxiliary pulps such as bast pulp.

  In particular, if the raw material pulp is toilet paper or tissue paper, a mixture of NBKP and LBKP is preferable. Waste paper pulp may be blended as appropriate, but in terms of texture and the like, it is preferably composed only of NBKP and LBKP. In this case, the blending ratio is NBKP: LBKP = 30: 70 to 50:50. In particular, NBKP: LBKP = 40: 60 is particularly desirable.

On the other hand, the base paper sheet is not limited to white, and may be light pink or blue, for example, in order to obtain the effect of clearly showing the design embossing or the effect of making the overall appearance look high-class.
The adjustment of the base color of the base paper sheet can be achieved by a known technique such as making a papermaking raw material mixed with a colorant in advance.

In addition, each sanitary thin paper, the area 0.002～0.004Cm ² per one unit embossing, embossing density 30 to 100 pieces / cm ^2, a so-called micro-embossing of the embossing depth 0.05~2.0mm formed May be. About the shape of a unit embossing, it can be set as an appropriate shape.

[US tsubo]
On the other hand, the rice tsubo of each sanitary thin paper may be appropriately adjusted depending on its use, but particularly if it is a toilet roll, the value in the JIS P 8124 rice tsubo measuring method of each sanitary thin paper constituting the continuous sheet is It is preferably 10 to 22 g / m ² . This is because if it is less than 10 g / m ² , it is preferable from the viewpoint of improving the softness of the toilet paper, but the strength of the toilet paper cannot be ensured properly. On the other hand, if it exceeds 22 g / m ² , it becomes too hard to use as toilet paper, resulting in poor touch.

  Here, it is not necessary to unify all the basis weights of the sanitary thin papers. In the present invention, if the basis weight of the middle-layer sanitary thin paper 1 to which the pattern is applied is set to be higher than the basis weight of the surface sanitary thin paper 2, the printing of the ink in the middle layer is improved and the pattern formation is achieved. Since the pattern can be easily seen from the outside due to the low basis weight of the surface sanitary thin paper 2, and the strength and softness of the entire continuous sheet can be secured, this effect can be obtained. Thus, it is desirable to use the basis weight of each layer as a distribution.

[Paper thickness]
The paper thickness also depends on the application of the sanitary thin paper roll X1. If it is a toilet roll, it is preferable that paper thickness shall be 50-300 micrometers. The paper thickness here is not the thickness of the sanitary thin paper, but the thickness of the continuous sheet 10. That is, the paper thickness in the laminated state. When the paper thickness is less than 50 μm, it is preferable from the viewpoint of improving softness, but the strength as toilet paper cannot be ensured properly. On the other hand, if it exceeds 300 μm, the toilet paper becomes too hard and the touch of the toilet paper is not only deteriorated, but also a feeling of tingling is generated during use. In addition, it is not necessary to unify all the thicknesses of the sanitary thin paper constituting each layer.

  The paper thickness is measured using a dial thickness gauge (thickness measuring instrument) “PEACOCK G type” (manufactured by Ozaki Seisakusho) under the conditions of JIS P8111. Specifically, confirm that there is no dust, dust, etc. between the plunger and the measuring table, lower the plunger on the measuring table, move the memory of the dial thickness gauge to adjust the zero point, and then Then, raise the plunger and place a sample (eg, toilet paper) on the test table, slowly lower the plunger and read the gauge at that time. At this time, only the plunger is placed. The paper thickness is an average value obtained by performing measurement 10 times.

  The tensile strength of the sanitary thin paper according to the present invention is determined according to the tensile test method of JIS P 8113. Among them, it is cut into a width of 25 mm in the vertical direction and the horizontal direction under the standard conditions defined in JIS P8111.

[Water disintegration]
If the continuous sheet 10 according to the present invention is water-degradable, such as for toilet use, it is desirable that the result of the test method for ease of loosening defined by at least JIS P 4501 is 80 seconds or less. Usually, if it exceeds 80 seconds, even if it is discarded after use in a flush toilet or the like, the water disintegration is slow and the drain pipe may be clogged. The water disintegration can be adjusted by adjusting the freeness of a known paper strength adjusting agent or papermaking raw material.

〔adhesive〕
Adhesion between the sanitary thin papers can use a known adhesive used when forming the ply structure, for example, an adhesive such as PVA (polyvinyl alcohol) or CMC (carboxymethylcellulose). If water-degradable sanitary thin paper is used, it is desirable to use a water-soluble adhesive.

  In addition, when giving a pattern to the said middle-layer sanitary thin paper especially using pigment ink, the said pigment ink itself can be functioned as an adhesive agent. After printing the pigment ink, if the surface sanitary thin paper 2 and the middle sanitary thin paper 1 are brought into contact with each other before the ink is completely dried, they are bonded.

[Ply peel strength]
The ply peel strength [cN / 50 mm] in the continuous sheet 10 is preferably 5 to 100 cN / 50 mm. The reason why the lower limit is defined as 5 cN / 50 mm is that when the thickness is less than 5 cN / 50 mm, the base paper sheets S1 and S2 cannot be properly bonded to each other. Moreover, the reason why the upper limit is defined as 100 cN / 50 mm is that when it exceeds 100 cN / 50 mm, it becomes too hard as a water-degradable sanitary thin paper, and the touch is deteriorated. The ply peel strength is measured according to the tensile test method of JIS P 8113. Among them, it shall be cut into a width of 50 mm in the vertical direction under the standard conditions specified in JIS P8111. After cutting, the sample is peeled in the vertical direction, and the peeled load cell (TG200N, manufactured by Minebea) is fixed to the upper gripping tool and the other to the lower gripping tool. The interval is 8 cm. Next, the film is pulled at a rate of 100 mm / min in the vertical direction and further peeled by 5 cm, and the strength at that time is measured.

[Drug]
Examples of the drug contained in the surface sanitary thin paper include softeners, lubricants, bactericides, antiviral agents, and antibacterial agents as described above.

As the softening agent, a cationic surfactant, an anionic surfactant, a nonionic surfactant, or the like can be used. Among these, it is preferable to use a cationic surfactant. 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, or an aliphatic derivative of a heterocyclic secondary or tertiary amine is used. be able to. Examples of the lubricant include fatty acid amide compounds.
As the anionic surfactant, carboxylate-based, sulfonate-based, sulfate ester-based, phosphate ester-based surfactants and the like can be used. Among them, alkyl phosphate ester salts are 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

  On the other hand, the types of antiviral agents, antibacterial agents, and bactericides are not particularly limited. For example, monoterpene hydrocarbons contained in plant extract components such as oximen, camphene, limonene, sabinene, myrcene, terpinene, pinene, and cymene, monoterpene alcohols such as citronellol, geraniol, isopulegol, linalool, terpineol, and anethole , Carvacrol, eugenol, thymol, paracresol, kabicol, rose butts extract, phenols such as green tea polyphenol, phenol ethers such as t-anethole, chabicol methyl ether, safrole, acetaldehyde, citral, citronellal, geranial, perylaldehyde Aldehydes such as palarenar, acetophenone, camphor, jasmon, note caton, menthone, fengcon, carvone, plegon One of the medicinal ingredients such as olefins, oxides such as potassium olefin oxide, cineole, bisabolol oxide, flavonoids such as catechin, proanthocyanidins, flavones, flavanones, anthocyanins, phenols, flavonols, etc. Alternatively, several types can be appropriately selected and used. Also, for example, organic acids such as ascorbic acid, carboxylic acid and citric acid, and alkylbenzene sulfonic acids such as dodecyl benzene sulfonic acid, sodium dodecyl benzene sulfonate, calcium dodecyl benzene sulfonate and salts thereof, anionic surfactants, cationic surfactants Agents, amphoteric surfactants, nonionic surfactants and the like can also be used. However, it is preferable to use at least one of a surfactant and a polyhydric alcohol as the antiviral agent. This is to inactivate viruses by adsorbing and degrading them on cell membranes such as viruses.

It is a perspective view of the sanitary thin paper roll which concerns on this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Middle-layer sanitary thin paper, 2 ... Surface sanitary thin paper, 3 ... Back surface sanitary thin paper, 10 ... Continuous sheet | seat, R ... Peripheral surface, P ... Colored part of design and design, X1 ... Sanitary thin paper roll.

Claims (6)

A sanitary thin paper roll in which two or more strips of sanitary thin paper are laminated and wound into a cylindrical shape,
It has a strip-like sanitary thin paper containing a drug and a strip-like sanitary thin paper with a pattern laminated adjacent to it,
A sanitary thin paper roll in which these sanitary thin papers are laminated, and a band-like sanitary thin paper containing the medicine is positioned so as to be positioned on the outermost layer so as to always constitute the outer peripheral surface of the roll.   The sanitary thin paper roll according to claim 1, wherein the pattern is provided on a surface facing the sanitary thin paper containing the medicine.   The sanitary thin paper roll according to claim 1 or 2, wherein the sanitary thin paper containing the drug has an opacity of 30% to 55%.   The sanitary thin paper roll according to any one of claims 1 to 3, wherein the pattern has a portion colored in a color different from a ground color of the sanitary thin paper.   The sanitary thin paper roll according to claim 4, wherein the colored portion is formed by printing ink. The sanitary thin paper roll according to any one of claims 1 to 5, wherein the sanitary thin paper has a value of 10 to 22 g / m ^{2 according} to a method for measuring a basis weight of JIS P 8124.

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