KR101496663B1 - Sanitary tissue paper - Google Patents

Abstract

Eliminates the unhygienic condition of the back of the runny nose.

(11, 12, 30) is a paper layer made of pulp as a raw material, and the amount of the back of the artificial nasal water in the backseam test (without load) of the artificial nasal water is 10 mg Or less.

Hygienic foil paper, pulp, antiviral agent, middle layer, outer layer

Description

SANITARY TISSUE PAPER

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sanitary papermill paper such as a tissue paper or a toilette paper. More particularly, the present invention relates to a tissue paper for capturing body fluids including viruses such as runny nose.

Conventionally, this type of sanitary napkin has a problem that the runny nose fluid leaks back and gets on the back of the hand, which is unsanitary. Of course, if you stack several layers of sanitary napkin, the problem of leaking backward is avoided. However, it is uneconomical to stack several layers of hygienic paper. In addition, when the sanitary napkin is overlapped with several layers, the thinness and the softness are impaired, so that the merit of the recent sanitary napkin which is thin and soft is attenuated. If you are caught in a cold, runny nose leaks back into your hands, including viruses, can reach your hands and cause an infection in your body through food.

Thus, a sanitary napkin containing an antiviral agent has been proposed as a sanitary napkin that solves the problem of unsanitary (see, for example, Patent Document 1).

However, if a liquid containing a virus such as a runny nose leaks out before the antiseptic action of the antiviral agent is manifested, it is not a fundamental solution in terms of prevention of infection propagation.

[Patent Document 1] Japanese Patent Application Laid-Open No. 2003-512542

1 is a cross-sectional schematic diagram of sanitary papers.

Fig. 2 is an explanatory diagram of disposal of a sanitary papermill.

3 is a cross-sectional schematic diagram of sanitary papers.

4 is a sectional schematic view of a sanitary papermill.

5 is a sectional schematic view of a sanitary napkin.

6 is a cross-sectional schematic diagram of sanitary papers.

7 is a cross-sectional schematic diagram of sanitary papers.

8 is a perspective view of the measurement plate.

9 is a sectional schematic view of another sanitary napkin.

10 is a diagram for explaining a method of measuring the KES tactile index.

11 is a diagram for explaining a method of measuring the KES tactile index.

Fig. 12 is a diagram for explaining a method of measuring the KES tactile index.

13 is a view showing a manufacturing flow of a sanitary papermill.

Fig. 14 is an explanatory diagram of the condition of the backseam test of artificial nasal mucus under a load condition (at a load of 250 g for 3 seconds). Fig.

<Description of Symbols>

10: Hygienic foil paper 11,12: Outer layer

30: Intermediate layer W: Runny nose

The main object of the present invention is to provide a hygienic foil paper having characteristics required for sanitary foil such as hygienic and softness. Other problems will be apparent from the following description.

The present invention which solves this problem is as follows.

[Invention according to claim 1]

As a two-layer or more layered sanitary napkin,

Wherein at least one outer layer of the outermost layer of the sanitary napkin is paper layer made of pulp,

Wherein the sanitary nasal discharge of the artificial nasal mucus is less than 10 mg.

(Action effect)

Since the amount of sun behind the artificial nasal discharge is less than 10mg, it becomes hygienic when the nasal discharge is released or when the contaminated liquid is brushed. In the case of being caught by a cold, the contact between the virus and the human body can be prevented, and the propagation of the virus can be prevented. In addition, even when waste is worn in the trash can, it is possible to prevent contact with the body when disposing it from the trash can. Thus, it is excellent in terms of public health.

Further, since it is at least one outer layer of the outermost layer, it exhibits the same feel as ordinary tissue paper, and there is no discomfort.

[Invention according to Claim 2]

As a three-layered sanitary napkin,

Wherein each layer is a paper layer made of pulp as a raw material, and the amount of the backing of the artificial nasal mucus in the backseam test (no weighted load) of the artificial nasal water is 10 mg or less.

(Action effect)

When the paper is a paper layer made of pulp as the raw material for both outermost layers while being made of three layers of sanitary papers, it is possible to use the front and back layers without discrimination and is excellent in touch. It becomes rich.

[Invention according to claim 3]

The sanitary napkin according to claim 1 or 2, wherein the amount of the back nose of the artificial nasal mucus in the backseam test of the artificial nasal mucosa under the load condition (3 seconds at a load of 250 g) is 150 mg or less.

(Action effect)

The underarm test of artificial runny nose under load conditions (3 seconds with a load of 250 g) is practically consistent with the condition of nose release. As a result of the investigation by the present inventor, the lowest value of the commercial product was 153 mg. It is understood that this commercial product has fewer backslashes than the actual nosings, and in this respect, it can be seen that it is possible to prevent the backflow of the artificial nosy as described in claim 3 sufficiently backward. In addition, the amount of back sash of the artificial nasal water is more preferably 90 mg or less.

[Invention according to claim 4]

The sanitary napkin according to claim 2, wherein the basis weight of the intermediate layer is larger than that of both outer layers.

(Action effect)

If the basis weight of the intermediate layer is higher than that of both outer layers, the absorbency (amount of absorbed liquid) in the intermediate layer is increased, and consequently, the effect of reducing the posterior gum is increased.

[Invention according to claim 5]

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The sanitary napkin according to claim 2, wherein the sanitary papermaking paper comprises a chemical solution for enhancing fluid permeability to both outer layers.

(Action effect)

When the outer layer contains a chemical solution that enhances fluid permeability, once the liquid penetrated into the middle layer is confined, the effect of reducing the back gums such as runny nose is increased.

[Invention according to claim 6]

The sanitary napkin according to claim 1 or 2, wherein each of the layers overlapping each other is overlapped by any one bonding process selected from the group of heat sealing, ultrasonic sealing, pressure-sensitive adhesive and ply bonding.

(Action effect)

As means for overlapping the layers, there may be mentioned thermal fusion bonding, ultrasonic fusion bonding, pressure-sensitive adhesive, and fly bonding.

[Invention according to claim 7]

The sanitary napkin according to claim 2, wherein a color is formed in one of the layers of the intermediate layer, and the coloring thereof is visible from at least one of the outermost layers.

(Action effect)

It is possible to easily distinguish the colored layer from the ordinary sanitary papermaking paper when the colored layer is formed in one of the intermediate layers and the colored layer is in a relationship visually recognizable from at least one outermost layer side, Since the component does not contact the skin, it is possible to prevent the skin from becoming rough.

[Invention according to claim 8]

The sanitary napkin according to Claim 1 or 2, wherein the product has a basis weight of 10 to 55 g / m 2.

(Action effect)

In the case of two or more layers, particularly three layers of overlapping hygienic papermaking papers, an excessively large meter basis weight is preferred to be 55 g / m 2 or less in order to impair softness. If the basis weight is less than 10 g / m &lt; 2 &gt;, there is a problem that it is difficult to provide sufficient liquid-absorbent properties.

EFFECTS OF THE INVENTION [

It is possible to provide sanitary papermill paper having characteristics required for sanitary papermill, such as hygiene and softness.

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

As shown in the figure, the sanitary napkin 10 of the present embodiment has a two-layer or more layered structure. Here, the "layer" means a structure having a predetermined thickness that the material continuously expands in the planar direction. Therefore, in addition to a laminated structure of a plurality of layers of materials ("laminate"), one layer or laminate is partially bonded to the other ply by one ply. Thus, the present invention also encompasses "ply junction"

[Structure Example]

The structure of the sanitary napkin of the present invention will be described with reference to various forms.

Fig. 1 shows the outer layer 11 on the use side as an absorbent layer of a liquid containing pulp as a raw material and the outer layer 12 on the other side of the unused side as a liquid-pervious layer (hatching). Here, the "fluoropolymer permeable layer " does not mean a layer which does not completely permeate the liquid but means a layer having low liquid permeability as compared with the" liquid absorbent layer ".

3 shows an intermediate layer 30 interposed between the outer layer 11 and the outer layer 12.

4 shows a state in which the first intermediate layer 31 and the intermediate layer 30 of the second intermediate layer 32 are interposed between the outer layer 11 and the outer layer 12. [ In this case, either or both of the first intermediate layer 31 and the second intermediate layer 32 can be made into the liquid-pervious permeable layer.

5 shows a state in which the first intermediate layer 31, the second intermediate layer 32 and the intermediate layer 30 of the third intermediate layer 33 are interposed between the outer layer 11 and the outer layer 12. In this case, any one of the first intermediate layer 31, the second intermediate layer 32, and the third intermediate layer 33 may be formed as the liquid-pervious layer.

6 is a view showing a state in which the laminated body of the outer layer 11 and the intermediate layer 31 and the laminated body of the outer layer 12 and the intermediate layer 32 are bonded to each other by a joining process 40 such as thermal welding, ultrasonic welding, ). &Lt; / RTI &gt;

7 shows a laminated body of the outer layer 11 and the intermediate layer 31 and a single outer layer 12 ply-bonded by the partial bonding portion 40. Fig.

In the present invention, at least one outer layer of the outermost layer is a paper layer made of pulp as a raw material, and any layer other than the paper layer may be formed as a liquid-pervious permeable layer. 3 and 4, it is preferable that both the outer layer 11 and the outer layer 12 are paper layers from the viewpoint of absorbency of liquid such as nasal mucus. Particularly, the three-layered product is optimal because it does not impart excessive rigidity.

The intermediate layer 30 can be colored. The coloring agent may be colored by adding dyes or pigments, either natural or synthetic, to the surface of the layer or to the surface of the layer, in addition to the use of a material in which the material itself is already colored. In addition to coloring the entire body, geometric shapes such as circles, triangles, and squares, shapes such as flowers, trees, grasses, plants, people, animals, fish, and the like can be partially designed with a coloring agent. The coloring becomes visually distinguishable from the general-purpose tissue paper for the user. Illustratively, an example of the colored layer is represented by hatching by a broken line. If necessary, the outer layer may be colored.

The above example is an example of a laminate. As the laminating means, heat fusion bonding, ultrasonic fusion bonding, means for interposing a pressure-sensitive adhesive, or the like can be adopted. In addition to the front surface, these joint portions may be partly in stripes, scattered spots, lattice spirals, or spiral spots. In the case of the front surface of the bonded portion, by the definition of the above-mentioned "layer ", it can not be said to be a layer because it is not a different material. On the other hand, in the case of front bonding using a pressure-sensitive adhesive, since a pressure-sensitive adhesive which is another material is interposed, it is defined as "pressure-sensitive adhesive layer".

In the present invention, an antiviral agent can be contained on the surface or inside of any one layer. In addition, an antiviral agent may be contained on the surface or inside of any of a plurality of layers. A preferable example is that the outermost layer is a paper layer and the antiretroviral agent is contained on the surface or inside of the intermediate layer.

[Providing fluid permeability and fluid-permeable layer]

The sanitary napkin 10 according to the present invention has a liquid-pervious layer. As a result, for example, when the nose is loosened with the outer layer 11 of the sanitary napkin 10 shown in Fig. 1 as the use surface, the nasal water W does not leak backward (see Fig. 3, ). 2, the nasal mucus is retained in the nasal cavity, so that it is possible to prevent the spread of the virus in the nasal mucosa W to other people, It becomes clean.

Permeability of the liquid-pervious layer of the present invention is determined by the characteristics of the entire sanitary papermill 10. That is, the fluid permeability of the fluid-permeable layer is determined by the thickness of the layer other than the fluid-permeable layer, the kind of the material, the number of laminated layers, and the like.

In the present invention, the sanitary papermill 10 itself may be such that the liquid-pervious layer has liquid-pervious permeability so that nasal discharge does not substantially leak backward. More specifically, it is preferable that the liquid-crystal permeability based on the ten-point method be 0 to 9, more preferably 0 to 5, and particularly preferably 0 to 2. When the fluid permeability based on the 10-point method is set to 0 to 2 points, as shown in the fluid-permeable layer, the liquid W containing the virus such as the balloon or nose is used after the use of the sanitary papers 10 It is kept particularly in a wrapped state.

Here, the 10-point method is an evaluation method for indicating the degree of fluid permeability. In this evaluation method, first, three sheets of filter paper ("ADVANTEC 1 (150 mm)" manufactured by Toyobo Co., Ltd.) are stacked, and a test piece and the measuring plate 40 shown in FIG. 8 are placed thereon. Distilled water drops are charged into the respective holes 41, 41 ... of the measurement plate 40 and the number absorbed into the filter paper within 2 seconds is counted to show the number as a score. And the diameter of each of the holes 41, 41, ... is 10 mm.

The above-mentioned 10-point method is a method of evaluating fluid permeability, which is not necessarily high precision. On the contrary, the present inventors have found that the present invention is not limited to preventing the posterior root of the runny nose completely, but may be applied to the actual use as long as the amount of the artificial nasal discharge leaking backward is less than 10 mg And that it is hygienic.

Here, the amount (mg) of the artificial nasal discharge leaking backward by the backseam test of artificial nasal water is the value obtained through the following (1) to (5) test procedure.

(1) aqueous solution of 4% CMC (carboxymethylcellulose) = 1: 2 (physiological saline (urea 2%, sodium chloride 0.8%, calcium chloride 0.3%, magnesium sulfate 0.8%, ion exchange water 96.1% , Scarlet coloring food (trace amount)).

(2) A filter paper ("ADVANTEC 1 (150 mm)" manufactured by Toyobo Co., Ltd.) was laminated and measured for mass.

(3) A test sample folded in half is laminated on the piled filter paper.

(4) Drop 1 ml of artificial snot from the height of 10 mm onto the filter paper with a micropipette.

(5) After 10 seconds, the test strip is removed, and the mass of the filter paper is measured. The difference in mass between the test strip and the drop is defined as the amount of mist (mg) behind the artificial nose.

In the sanitary napkin 10, it is preferable that the absorbency of the paper layer constituting the outer layer is 5 seconds or more, particularly 5 to 10 seconds. Here, the absorbency (seconds) of the paper layer of the outer layer is a value obtained through the following test procedures (6) to (10).

(6) Prepare distilled water, digital micropipette, stopwatch and tripod.

(7) Two sheets of test paper are stacked and placed on a support with a hole of 40 mm or more in diameter.

(8) Drop a drop (0.1 ml) of distilled water from a 10 mm height onto a test strip with a digital micropipette.

(9) Measure the time from the moment the distilled water comes into contact with the test strip until the water is completely absorbed and the surface of the test strip is no longer reflected (in 0.01 second increments).

(10) is subjected to this test five times, and up to a first decimal place of the average value is taken as the degree of absorption (second).

On the other hand, in the case of three or more layers including both outermost layers, the effect of preventing the afterglow can be enhanced by increasing the liquid holding capacity of the intermediate layer relative to the outermost layers. One of means for making the liquid retention capacity of the intermediate layer larger than the liquid retention capacity of both outermost layers is to increase the basis weight.

In the case of the two-layer structure, the outer layer of one of the outer layers of the absorbent layer of the pulp raw material has a basis weight of 10 to 20 g / m 2, and the other outer layer of the fluid-permeable layer has a basis weight of 15 to 35 g / M &lt; 2 &gt;. In the case of the three-layer structure, the basis weight of the outer layer of the water absorbent layer of the pulp raw material is 10 to 20 g / m 2, the weight of the intermediate layer constituting the perfluorocarbon layer is 15 to 35 g / It is preferably 15 to 25 g / m 2.

In this case, it is preferable to use the cram absorbency (JIS P 8141) as an index and the cram absorbency thereof to be 30 mm or more, particularly 30 to 50 mm . The amount of water absorption calculated from the difference in weight before and after measurement of the cram absorbency is preferably 30 mg or more, particularly preferably 30 to 50 mg.

The "paper layer" in the present invention may contain other kinds of cellulose, hemicellulose, hydrophilic acetate cellulose, hydrophilic nonwoven fabric and the like as long as the pulp raw material is mainly used.

Permeable layer is provided on the paper layer to prevent backsight of runny nose throughout the sanitary napkin.

The first means for forming the fluid-permeable layer is to use a material such as a plastic film or a water-repellent nonwoven fabric that contributes to the fluid permeability of the material itself.

The second means for forming the fluid-permeable layer is a method of imparting fluid-permeability by using a hydrophilic fiber such as pulp fiber or acetate cellulose and adding a fluid-permeability-imparting agent. In the present invention, it is preferable to take this second means.

When forming the liquid-pervious layer, for example, a film or the like as a raw material, fine pores may not be formed in such a film, but from the viewpoint of pursuing the softness of the sanitary papermaking paper, it is preferable that a plurality of fine pores are formed Do. The opening diameter of the plurality of fine holes is preferably 0.1 to 40 nm, more preferably 0.5 to 30 nm, and particularly preferably 10 to 20 nm. If the opening is too small, the effect of increasing the softness of the sanitary papers is not sufficient. On the other hand, if the opening is excessively large, there is a possibility that the virus will escape from the main liquid-permeable layer. The size of the virus is about 20 to 250 nm.

A film having no fine pores formed therein can be formed of, for example, a hydrophobic (thermoplastic) resin. On the other hand, a film (porous film) having fine pores formed thereon is produced by melt-kneading a hydrophobic thermoplastic resin, a minute inorganic filler composed of calcium carbonate or the like, or an organic polymer having no compatibility, Can be formed by uniaxial or biaxial stretching. As the above-mentioned thermoplastic resin, polyolefin and the like can be used. As the polyolefin, for example, one kind or a plurality of kinds can be suitably selected from high to low density polyethylene, linear low density polyethylene, polypropylene, polybutene and the like.

A hydrophobic nonwoven fabric may also be used. As the nonwoven fabric, for example, fibers made of a thermoplastic resin such as polyolefin such as polyethylene or polypropylene, polyester such as polyethylene terephthalate, or polyamide, or two or more kinds of these resins A nonwoven fabric formed of a conjugate fiber having a structure of a core-sheath type and a side-by-side type made of a nonwoven fabric. Such a nonwoven fabric is preferably produced by a general manufacturing method such as an air-through method, a meltblown method, a heat seal method, a spun bond method, and a suction heat bond method.

When the pulp fiber is used as a raw material, the fluidity permeability can be imparted by adding a sizing agent. In this case, the sizing agent is preferably contained in an amount of 0.02 to 0.06%, more preferably 0.03 to 0.05%, in terms of solid mass ratio to the pulp absolute dry mass. If the blending amount of the sizing agent is less than 0.02 mass%, it is impossible to sufficiently reduce the posterior stem of the liquid. On the other hand, when the blending amount of the sizing agent exceeds 0.06 mass%, the water repellency becomes too strong.

As the sizing agent, for example, acid sizing agents such as neutral sizing agents such as alkylketene dimer, alkenyl succinic acid and stearic anhydride, saponified natural rosin and fortified rosin can be used.

On the other hand, in the above structural example, an example in which the intermediate layer is mainly referred to as a " fluid-permeable layer "has been described. On the other hand, the outer layer may be referred to as a " liquid-pervious layer ", and the intermediate layer 30 may be referred to as a "liquid absorbent layer ". Specifically, as shown in Fig. 9, the two outer layers 11 and 12 may be formed as a " fluid-permeable layer ", and the intermediate layer may be referred to as a "liquid absorbent layer"

In this example, when liquid, for example, runny nose, from one of the outer layers 11 and 12 also flows through the liquid-pervious permeable layer by the action of the discharge pressure and shifts into the "liquid absorbent layer " , The nose is absorbed there, and it stays there. That is, since the other outer layer is the " fluid-permeable layer ", the nasal discharge absorbed in the intermediate layer 30 which is the "liquid absorbent layer" rarely leaks backward.

More preferably, the outer layers 11 and 12 are formed of a paper layer made of pulp as a raw material to ensure flexibility and good tactile property, and to the outer layers 11 and 12, glycerin, polyhydric alcohols, Can be added as a medicament for imparting impermeability, so that it becomes a sanitary papermaking paper product having a surface with excellent moisturizing property, and a product in which runny nose leaks back is rarely produced.

[Manufacturing method]

Next, the manufacturing method of the sanitary papermill 10 will be described taking the case of three-layering as an example.

In this manufacturing method, as shown in Fig. 13, first, the intermediate layer 30 is unwound from the reel 50. Then, as shown in Fig. Next, an antiviral agent is externally applied to the surface of one or both surfaces of the intermediate layer 30 by means of the antiviral agent application means 35 or 36 on both surfaces of the intermediate layer 30 in the illustrated example. In the intermediate layer 30 coated with the antiviral agent, one outer layer 11 or the other outer layer 12 is overlapped on both sides thereof. One outer layer 11 is unwound from the reel 51 and the other outer layer 12 is unwound from the reel 52 to overlap the intermediate layer 30. In this example, The sanitary papermill 10 having three layers as described above can be wound around a reel 53, for example, to store it properly.

[Use materials, medicines, etc.]

As the basis weight of the layer of the present invention, the basis weight (JIS P 8124) of the intermediate layer having a larger liquid holding capacity is set to 15 to 35 g / m 2 while the basis weight (JIS P 8124) M &lt; 2 &gt; is particularly preferable in that it is thin and soft.

The moisture content of the outer layers 11 and 12 is preferably 8 to 15 mass%, more preferably 10 to 13 mass%, of the pulp fibers constituting the outer layers 11 and 12. If the water content is less than 8% by mass, a moist feeling may be lost and moisture in the keratinous matter may be taken away. On the other hand, if the moisture content exceeds 15 mass%, sticking may occur.

A suitable example of the sanitary napkin 10 is a form having outer layers 11 and 12 and an intermediate layer 30. The antiviral agent may cause skin roughness rarely in a user of sensitive skin. Therefore, the surface 30a of the intermediate layer 30 may be coated with antiviral agent It is preferable to externally apply it by coating or the like. According to this embodiment, since the liquid W containing the virus that has permeated the outer layer 11 or 12 permeates through the outer layer 11 or 12 and contacts the antiviral agent on the surface 30a, The killing action is effectively expressed.

The antiviral agent may be entrapped in the intermediate layer (30).

The method of externally adding an antiviral agent is not particularly limited. For example, spray coating, gravure coating, slot coating and the like can be exemplified. In addition, a method for introducing an antiviral agent is not particularly limited. For example, a method of charging into a microcapsule can be exemplified. The applied amount of the antiviral agent including external addition and internal application may be 0.1 to 30 g / m 2 on the basis of absolute dry mass.

Ply bonding is one of the ply bonding means according to the present invention. That is, it is possible to carry out ply bonding on the line by embossing to prevent delamination along both edges along at least one of the longitudinal and transverse directions of the sheet. The ply bonding is preferably performed at a position 5 to 40 mm away from both ends of the sheet, more preferably 10 to 20 mm. If it is less than 5 mm, the fly may peel off and the middle layer may come into contact with the skin. On the other hand, if it exceeds 40 mm, the end portion may be bent and the middle layer may come into contact with the skin.

Examples of the ply bonding include a treatment for forming a slit, a treatment for an adhesive, and the like in addition to the treatment for bonding by embossing (application).

It is preferable that the sanitary napkin 10 has a softness of 0.5 to 3.0 g and a KES tactile index of 8 to 15. When this value is satisfied, the sanitary napkin 10 becomes sufficiently smooth.

Here, the softness means a resistance value (average value in vertical and horizontal directions) when a hygienic foil paper having a width of 10 cm is pushed into a gap of 5.0 mm in width by a terminal, and the smaller the value, the more soft. In the present specification, "softness" refers to a value measured by the handle ometer method (JIS L-1096 E method). The softness can be adjusted, for example, by changing the basis weight, the number of layers, the type of fibers forming the layer, and the tight processing conditions.

On the other hand, the KES tactile index is a value measured by the following method.

That is, in this measurement, as shown in Fig. 10 to Fig. 12, a conventional MMD tester, an artificial leather (manufactured by Kato Tech Co., Ltd.) The measurement terminal was covered with an artificial leather (Sapore: manufactured by Idemitsu Techno Fine Industries Co., Ltd.), and the artificial leather of the measuring surface of the measuring terminal 4 mg of olive oil (BOSCO extra virgin oil: manufactured by Nissin Oil Group Co., Ltd.) was uniformly applied to a portion (contact plane) coated with a polyvinyl chloride (PVA).

Specifically, the contact plane constituted by the artificial leather is composed of a piano wire having a cross-sectional diameter of 0.5 mm and has a unit swollen portion (bulge portion) having a radius of curvature of 0.25 mm adjacent to the tip, An MMD measurement terminal having a continuous measurement surface and a measurement surface having an approximately 10 mm square measurement surface having a measurement surface length of 10 mm can be formed by covering with the above artificial leather. The covering of the terminal by the artificial leather can be achieved by bringing the artificial leather into perfect contact with the measurement surface of the terminal so as to form a contact plane of 10 mm square, or by applying a slight tension and covering it perfectly. In fixing the artificial leather to the terminal, it is important that the artificial leather and the terminal inside the artificial leather are displaced during measurement, that is, when the paper sample is moved, so that the artificial leather and the contact plane are not distorted. After the terminal is coated so that the contact plane is formed, for example, the portion where the contact plane is not formed is fixed firmly to a region, for example, a support material of the terminal, . Also, on the expectation of the MMD tester, lay artificial leather and fix it with adhesive tape or the like. At this time, it is important to firmly fix the artificial leather to the base so as not to be distorted at the time of measurement. Further, the artificial leather on the expectation is the same as the artificial leather constituting the contact plane. In addition, the paper sample is cut to 10 cm in four sides, and is fixed to the base of the artificial leather. At the time of measurement, the sample is pressed with a sample weight (about 100 g) on the paper sample. In addition, the load on the measuring terminal of the testing machine is set at 50 g, so that the entire contact plane constituted by the artificial leather is brought into contact with the paper sample at a contact pressure of 50 gf / cm 2. As in the MMD measurement, This can be achieved by attaching the weight to the top of the terminal. Of course, the method of fixing one end of the supporting material (the end opposite to the moving direction of the paper sample) corresponds to the measurement of MMD. The measurement is performed three times for the longitudinal direction of the paper sample and three times for the lateral direction for a total of six times, and the measured value (KES tactile index) is an average of six measurements.

This KES tactile index can be controlled by, for example, the kind of fiber forming the outer layer, the fiber length, the degree of fineness, and the type and amount of the fluid-permeable chemical solution imparted to the outer layer.

As means for imparting or enhancing the fluid permeability to the layer in the present invention, there is a means of using a fluid-permeable chemical liquid as described above. Examples of such liquid-permeable liquid medicines include polysiloxanes such as silicone oil and silicone powder, which are known as moisturizing liquids, polyhydric alcohols such as glycerin, diglycerin, propylene glycol, 1,3-butylene glycol and polyethylene glycol, There may be mentioned those containing at least one moisturizing agent selected from the group consisting of sugars such as glucose, xylitol, maltose, maltitol, mannitol and trehalose, and glycol solvents and derivatives thereof. Further, higher alcohols such as cetanol, stearyl alcohol, oleyl alcohol, and liquid paraffin can also be used. However, it is preferable that at least the polyhydric alcohol is contained as the fluid-permeable liquid. It has a moisturizing property and reduces damage to the skin during use.

It is particularly preferable that these fluid-permeable chemical liquids are provided in an amount of 15 to 30%, preferably 20 to 25%, based on the mass of the object layer on an absolute dry mass basis. If it is less than 15%, the effect of chemical solution application can not be sufficiently obtained. On the other hand, if it exceeds 30%, the effect of chemical solution donation is not improved, which is uneconomical.

Further, the liquid-permeable liquid medicine includes amino acids such as glycine, aspartic acid, arginine, alanine, cystine and cysteine; Plant extracts such as aloe extract, 甘 茶 extract, corn extract, cucumber extract, tomato extract, briar extract, scrub extract, lily extract, and chestnut extract; Vegetable oils such as olive oil, jojoba oil, rosehip oil, almond oil, eucalyptus oil, avocado oil, camellia oil, soybean oil, safflower oil, sesame oil and evening primrose oil; Vitamins, hydrolyzed collagen, hydrolyzed keratin, hydrolyzed silk, chitosan, urea, honey, royal jelly, sodium hyaluronate, ceramide, squalane, vaseline and the like.

In addition, vitamin C, vitamin E, collagen and the like can also be mixed with liquid drug permeable liquid. This type of chemical liquid has a function of enhancing the wet feeling. Vitamin C and Vitamin E also function as antioxidants. Vitamin E has strong antioxidant activity, which prevents oxidation of lipid peroxides by abolishing free radicals and free radicals. Therefore, vitamin E functions as a stabilizer of a drug solution, and when it is applied to the skin of a person who uses a thin paper, the antioxidant effect and the blood circulation promoting effect of the sebum of the skin are exerted. It also has a moisturizing function. Like vitamin E, vitamin C has the antioxidant effect of sebum. In addition, since vitamin C has an action of reducing vitamin E, when both vitamin C and vitamin E are used, vitamin C functions as a preparation of vitamin E, and vitamin E oxidized by active oxygen or the like is reduced, E of the strong sebum to maintain the antioxidant action appears. Collagen forms 90% of the dermis of the skin, and when it is reduced, it loses its moisture and elasticity to the skin. Therefore, when it is contained in the thin paper, it exhibits a moisturizing effect of giving moisturization to the skin when it comes into contact with the skin, and also exhibits a moisturizing effect on the thin paper.

In addition, if the fluid-permeable liquid has a slightly acidic pH of 5.0 to 6.0, the skin does not become alkaline even when brought into contact with the skin, and skin roughness due to the influence of the pH of the liquid can be effectively prevented. A particularly suitable pH range is 5.3 to 5.7. The pH adjustment method can be carried out by adding an acidic or basic pH adjusting agent to the chemical solution. When the chemical solution is strong acid, an aqueous solution of sodium hydroxide or potassium hydroxide can be used. In the case of neutral or alkaline, citric acid, malic acid, Can be used.

Examples of the fluid-permeable fluid include fluid for obtaining a refreshing feeling, for example, sorbitol, alitol, xylitol, erythritol, lactitol, palatinit and the like. Erythritol, xylitol and sorbitol are preferred, and erythritol and xylitol are more preferred. These medicinal solutions may contain one or two or more kinds of cold sensitizers selected from the group of menthol, salicylic acid,? -Cineol and derivatives thereof. In this case, it is preferable that the agent for obtaining a refreshing feeling is incorporated in the outer layer in a state of being dispersed in the binder component.

On the other hand, a wetting agent, a softening agent, carboxymethyl cellulose, and the like can be cited as examples of a chemical solution which is preferably added (internally) in a papermaking step for forming a layer. A representative example of the softening agent is a surfactant-based softening agent. As the surfactant-based softening agent, an anionic surfactant, a nonionic surfactant, a cationic surfactant and a amphoteric surfactant can be suitably selected and used. When an anionic surfactant is used, the elasticity (bending stiffness) can be lowered, and the wettability by the moisturizing agent and the softness by the softening agent can be promoted.

Examples of the anionic surfactant include carboxylic acid salts, sulfonic acid salts, sulfuric acid ester salts and phosphoric acid ester salts. However, an alkyl phosphate ester salt is preferred.

Examples of the nonionic surfactant include polyhydric alcohol mono fatty acid esters such as sorbitan fatty acid ester, diethylene glycol monostearate, diethylene glycol monooleate, glyceryl monostearate, glyceryl monooleate and propylene glycol monostearate, Polyoxyethylene hydrogenated castor oil, N- (3-oleyloxy-2-hydroxypropyl) diethanolamine, polyoxyethylene hydrogenated castor oil, polyoxyethylene sorbitol beeswax, polyoxyethylene sorbitan sesquistearate, polyoxyethylene monooleate, Polyoxyethylene monolaurate, polyoxyethylene cetyl ether, polyoxyethylene lauryl ether, and the like.

As the softening agent, it is preferable to use a cationic surfactant. This is because the cell membrane (fat) of viruses, especially influenza virus, is anionic and is suitable for killing (deactivating) the virus by degrading the fat after the cationic surfactant adsorbs to the cell membrane (fat). As the cationic surfactant, quaternary ammonium salts, amine salts, amines and the like can be used.

As the amphoteric surfactant, an aliphatic derivative of a secondary or tertiary amine containing carboxy, sulfonate or sulfate, or an aliphatic derivative of a heterocyclic secondary or tertiary amine can be used.

In addition to the melamine-formaldehyde addition condensate and the urea-formaldehyde addition condensate, as the wet strength agent (enhancing agent), those described below can be suitably used in consideration of the environment. Namely, polyacrylamide, polyvinyl alcohol, glyoxal / polyacrylamide copolymer, polyamide epichlorohydrin resin in which the number of functional groups is reduced to 1/10, dialdehyde starch or cation-modified starch, oxidized starch, More specifically, a thermosetting resin comprising a cationic polyvinylamide copolymer and a divalent aldehyde (for example, JP-A-44-26670, JP-A-54-44762, A cationic aldehyde-modified polyacrylamide copolymer (see, for example, JP-A 6-184985 and JP-A 8-56868), a cationic aldehyde-modified polyacrylamide copolymer It is preferable that at least one polymer of a cationic polymer and an anionic polymer is hydrophobic (for example, Japanese Unexamined Patent Application Publication No. 2002-275787 Reference it) may be used such as known in the art.

When the sanitary napkin is tissue paper, the thickness of the paper in one set of three sheets (three ply) is preferably 200 to 350 mu m, more preferably 240 to 320 mu m. If the thickness of the paper is too thin, the feeling of thinness of the paper felt by the user becomes remarkable, and further, the absorbency is deteriorated and the function as a tissue paper is deteriorated. On the other hand, if the thickness of the paper is too thick, the performance of pulling out the product when the predetermined number of sheets is stored in the storage box is lowered.

Here, the paper thickness is measured using a dial thickness gauge "PEACOCK G type" under the conditions of JIS P8111. Specifically, it is confirmed that there is no waste or dust between the plunger and the measurement platform, the plunger is placed on the measurement table, the memory of the dial seeking gauge is moved to set the zero point, the plunger is then raised, (Hygienic foil paper) on the test stand, slowly lower the plunger and read the gauge at that time. At this time, just put the plunger on. The paper thickness is an average value obtained by performing measurement ten times.

In the sanitary papermaker's paper 10, the raw material for each layer is not particularly limited, and a suitable raw material may be used depending on the use of tissue paper, toilette paper, and the like. When the pulp fiber is used as the raw material, the pulp fiber (raw pulp) may be selected from wood pulp, non-wood pulp, synthetic pulp, old paper pulp and the like, more specifically, ) Pulp (GP), Stone Ground Pulp (SGP), Refiner Ground Pulp (RGP), Pressed Pulp (PGW), Thermomechanical Pulp (TMP), Chemie Thermo Mechanical Pulp (CTMP), Bleach Chemie Kraft pulp (KP) such as mechanical pulp (MP), chemical mechanical pulp (CGP), semi-chemical pulp (SCP), hardwood bleached kraft pulp (LBKP) and softwood bleached kraft pulp (NBKP), such as thermomechanical pulp (BCTMP) , Chemical pulp (CP) such as soda pulp (AP), sulfite pulp (SP) and dissolved pulp (DP), synthetic pulp made from nylon, rayon, polyester, polyvinyl alcohol (PVA) High-residue pulps such as abrasive pulp (DIP), waste pulp (WP), and the like, Such as rape pulp, zap pulp, esparto pulp, bagasse pulp, bamboo pulp, kenaf (raw cotton), which are made of cotton, flax, hemp, jute, manila hemp, ramie, ) Pulp, and auxiliary pulp such as bast pulp, and the like can be appropriately selected and used.

The raw material such as pulp fibers is made into a single layer by passing through a known papermaking process, specifically, a wire part, a press part, a dryer part, a size press, a calender part and the like. In the pasture, a suitable modifier such as a dispersing agent, a pH adjuster such as caustic soda and ammonia water, a defoaming agent, a preservative, a fluorescent dye, a releasing agent, a wettable agent, a flow modifier, Drugs can be added.

In the sanitary foil paper 10, the kind of antiviral agent that can be used is not particularly limited. For example, monoterpene hydrocarbons, citronellol, geraniol, and isopulegol contained in plant extract components such as ocimer, camphene, limonene, sabinene, myrcene, terpinene, pinene, Monopers such as anethole, carbachol, oegenol, thymol, paracresol, carbicol, rosebud extract, green tea polyphenol and the like, mono-terpene alcohols such as t- Aldehydes such as acetaldehyde, citral, citrallellar, geranil and perylaldehyde; acetophenones such as acetophenone, camphor, jasmone, notch carton, menton, and pentacene; , Ketones such as carbohydrates and fullerenes, oxidation products such as carlyolefin oxide, cineol and bisabolol oxide, and flavonoids such as catechin, proanthocyanidin, flavone, flavanone, anthocyanin, phenol and flavonol Of the active ingredients, one It can be used by appropriately selecting the number of species. Further, for example, organic acids such as ascorbic acid, carboxylic acid and citric acid, alkylbenzenesulfonic acids such as dodecylbenzenesulfonic acid, sodium dodecylbenzenesulfonate and calcium dodecylbenzenesulfonate and salts thereof, anionic surfactants, cationic surfactants Active agents, amphoteric surfactants, nonionic surfactants, and the like may be used. However, as the antiviral agent, it is preferable to use at least one of a surfactant and a polyhydric alcohol. This is because the virus is adsorbed and decomposed on the virus cell membrane to inactivate the virus.

These antiviral agents are preferably given in an amount of 0.1 to 30 g / m 2, preferably 1 to 10 g / m 2, on the intermediate layer having a larger liquid storage capacity based on absolute dry mass. If it is less than 0.1 g / m 2, the effect of imparting an antiviral agent is not sufficiently obtained. On the other hand, even if it exceeds 30 g / m 2, the effect of imparting the antiviral agent is not sufficiently improved, which is uneconomical.

In the case of using the antiviral agent as described above, it is preferable that the inactivation rate of the virus having the cell membrane is 99% or more. Furthermore, limiting the target virus to those having a cell membrane is because the surfactant adsorbs on the cell membrane and decomposes to inhibit the propagation of the virus.

As a method of measuring the inactivation rate, virus virus is prepared by adjusting influenza virus (A / Panama / 2007/99 (H3N2) Co., Ltd.) to about 10 ⁵ FFU / ml in the minimum essential medium (medium). A three-layer structure is used as a set of test strips, with a thin layer of paper impregnated with an antiviral agent. This test paper is cut into 1.5 cm x 1.5 cm, so that 3 sets of 1 sample (9 sheets including 3 intermediate layers impregnated with an antiviral agent) are immersed in 0.5 ml of virus solution. Leave at room temperature (25 ° C) for 1 minute, 5 minutes, 15 minutes and 60 minutes. The ratio of the death (inactivation) of the virus after 60 minutes (%) of the virus after 60 minutes was measured by measuring the amount of virus infection (quantitative value indicating the infectivity of virus) in the solution by stairwise dilution of the reaction solution after being left from 1: ) As a measurement value.

<Examples>

Various properties such as the backs of the artificial nasal mucus and the like were investigated on the commercially available tissue paper and the commercially available universal tissue paper and the commercially available tissue paper emphasizing the moisturizing property according to the present invention, and the results shown in Tables 1 and 2 were obtained. Here, the "absorbent layer" in each table means "intermediate layer" in the case of a three-layer structure, "one layer" in the case of a two-layer structure, Respectively.

It has been found that the embodiment according to the present invention has a very high effect of reducing the back of the nasal mucus. Though not shown in the table, the softness of each of the examples was 0.5 to 3.0 g, and the KES tactile index was 8 to 15, showing flexibility and tactility almost equivalent to those of a commercially available product.

The condition of the backseam test of the artificial nasal mucus under the load condition (3 seconds at a load of 250 g) is as follows with reference to Fig.

(11) Artificial runny nose (physiological saline (2% urea, 0.8% sodium chloride, 0.3% calcium chloride, 0.8% magnesium sulfate, 96.1% ion exchange water): 4% aqueous solution of CMC (carboxymethylcellulose) Pigment (trace amount)) is prepared.

(12) Filter paper ("ADVANTEC 1 (150 mm)" manufactured by Toyobo Co., Ltd.) was laminated to measure the mass. Mark the fold line at the center of this filter paper.

(13) A test sample is laminated on the piled filter paper ((a) view).

(14) Drop 1 ml of the artificial snot from the height of 10 mm onto the filter paper with a micropipette ((b) as well).

(15) Fold the test sample in half along the fold line of the filter paper (Fig. (C)).

(16) Water was added to a 500 ml SUS-made beaker (produced by Tokyo Kagaku Kikai K.K.) having a total weight of 250 g. At this time, the center of the bottom surface (82 mm in diameter, 52.8 cm in floor area) of the beaker is placed just above the center of the dropped artificial snort. After 3 seconds, the beaker was removed, the test sample was removed, and the mass of the filter paper alone was measured. The difference in mass between before and after the drop was measured as the amount (mg) of the artificial nasal water do.

Claims (9)

delete As a three-layered sanitary napkin, Each layer is a paper layer made of pulp, The liquid storage capacity of the intermediate layer is larger than the liquid storage capacity of both outer layers, Wherein the both outer layers contain 0.03 to 0.05% of a sizing agent for enhancing fluid permeability in terms of solid mass ratio to pulp absolute dry mass, The amount of artificial nasal mucus in the backseam test (no load) of the artificial nasal mucus is less than 10 mg, The basis weight of the intermediate layer than the both outer layers larger, and the basis weight of each outer layer to form said both outer layers 10 ~ 20g / m ^2, and the basis weight of the intermediate layer 15 ~ 25g / m ^2, the absorption of the both outer layers also Wherein the intermediate layer has a cram absorbency of 30 mm or more (JIS P 8141), and the paper thickness of the sanitary papermaking paper is 240 to 320 탆. The sanitary napkin according to claim 2, characterized in that the amount of back nose of artificial nasal mucus in the backseam test of artificial nasal mucosa under load conditions (3 seconds at a load of 250 g) is 150 mg or less. delete delete The sanitary napkin according to claim 2, wherein the layers overlapping each other are overlapped by any one bonding process selected from the group of heat fusion, ultrasonic fusion, pressure-sensitive adhesive and ply bonding. The sanitary napkin according to claim 2, wherein any one of the layers of the intermediate layer is colored, and the color thereof is visible from at least one of the outer layers. The sanitary napkin according to claim 2, wherein the product meter basis weight is 10 to 55 g / m 2. delete

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