JP7035790B2 - Moisturizing tissue - Google Patents

Description

The present invention relates to moisturizing tissue.

For example, Patent Document 1 discloses a moisturizing tissue having an improved moist feeling by forming an embossed shape of 4 to 200 pieces / cm ² with a height difference of 0.01 to 3.00 mm. In general, the moisturizing tissue has a moisturized feel (moist feeling) as compared with the dry tissue by impregnating with a moisturizing agent.
However, in the moisturizing tissue described in Patent Document 1, the size of the convex portion in the embossed shape (concave and convex shape) is too small. Therefore, as in the case of the tissue that does not form an embossed shape, when the moisturizer is impregnated, the crepe of the tissue is stretched to cause large and small wrinkles, and the aesthetics are impaired.

Japanese Unexamined Patent Publication No. 2009-178572

An object of the present invention is to provide a highly aesthetic moisturizing tissue in which wrinkles are suppressed while having a good feel to the touch.

Such an object is achieved by the present invention of the following (1) to ( 11 ).
(1) A moisturizing tissue that contains a moisturizer.
The tensile strength in the second direction orthogonal to the first direction is smaller than the tensile strength in the first direction.
A moisturizing tissue characterized in that a plurality of linear recesses extended so that the main extension direction is the first direction are provided along the side-by-side direction orthogonal to the extension direction.

(2) The moisturizing tissue according to (1) above, wherein the number of the recesses passing through the range of 1 cm in length along the side-by-side direction of the moisturizing tissue is 0.5 to 9.5.

(3) The moisturizing tissue according to (1) or (2) above, wherein the plan view shape of each of the concave portions is a shape including a linear shape, a broken line shape, or a curved shape.

(4) The moisturizing tissue according to any one of (1) to (3) above, wherein the planar view shape of each of the concave portions is a shape obtained by repeating the same shape.

(5) In the two adjacent recesses, the period of the plan view of one of the recesses is 0.1 to 0.9 along the extension direction with respect to the cycle of the plan view of the other recess. The moisturizing tissue according to (4) above, which is arranged so as to be out of cycle.

(6) The moisturizing tissue according to (4) above, wherein the two adjacent recesses are arranged so as to be line-symmetrical with respect to the axis of symmetry along the extension direction.

(7) The moisturizing tissue according to any one of (1) to (6) above, wherein the two adjacent recesses have portions connected to each other.

(8) The moisturizing tissue according to any one of (1) to (7) above, wherein the average width of each recess is 0.5 to 9.5 mm.

(9) The moisturizing tissue according to any one of (1) to (8) above, wherein the average distance between the two adjacent recesses is 0.5 to 9.5 mm.

(10) The moisturizing tissue according to any one of (1) to (9) above, wherein the recess occupies 5 to 95% in the plan view of the moisturizing tissue.

(11) The moisturizing tissue according to any one of (1) to (10) above, wherein the average depth of each recess is 0.1 to 1.0 mm.

According to the present invention, it is preferable to provide linear recesses along a predetermined direction to improve the feeling of touch and to generate both large wrinkles and small wrinkles even if a moisturizer is impregnated. It can be suppressed.

It is a top view which shows the 1st Embodiment of the moisturizing tissue of this invention schematically. FIG. 3 is a cross-sectional view taken along the line AA in FIG. It is a top view schematically showing the 2nd Embodiment of the moisturizing tissue of this invention. It is a top view schematically showing the 3rd Embodiment of the moisturizing tissue of this invention. It is a top view schematically showing the 4th Embodiment of the moisturizing tissue of this invention. It is a top view schematically showing the 5th Embodiment of the moisturizing tissue of this invention. It is a top view schematically showing the 6th Embodiment of the moisturizing tissue of this invention. It is a top view schematically showing the 7th Embodiment of the moisturizing tissue of this invention. It is a top view which shows the eighth embodiment of the moisturizing tissue of this invention schematically. It is a top view schematically showing the 9th Embodiment of the moisturizing tissue of this invention. It is a top view schematically showing the tenth embodiment of the moisturizing tissue of this invention.

Hereinafter, the moisturizing tissue of the present invention (hereinafter, simply referred to as “tish”) will be described in detail based on the preferred embodiments shown in the accompanying drawings.
In the attached drawings, for convenience, the dimensions of each part and their ratios are exaggerated and may differ from the actual ones. Further, the materials, dimensions, etc. shown in the present specification are examples, and the present invention is not limited thereto, and can be appropriately changed without changing the gist thereof.

<< First Embodiment >>
FIG. 1 is a plan view schematically showing a first embodiment of the tissue of the present invention, and FIG. 2 is a sectional view taken along line AA in FIG.
For convenience of explanation, the front side of the paper in FIG. 1 is referred to as "upper", the back side of the paper is referred to as "lower", the upper side of FIG. 2 is referred to as "upper", and the lower side is referred to as "lower".

The tissue 1 shown in FIG. 1 is embossed, and is defined by a recess (a region shown in black in FIG. 1) 2 having a linear shape in a plan view by embossing on the upper surface thereof and a recess 2. The formed plan view shape has a band-shaped convex portion (region shown in white in FIG. 1) 3. In the present embodiment, the portion pressed by the convex portion of the embossed roller of the tissue 1, that is, the portion to which the shape of the convex portion of the embossed roller is transferred constitutes the concave portion 2.
Further, the tissue 1 has a smaller tensile strength in the CD direction (second direction) orthogonal to the MD direction than the tensile strength in the MD direction (first direction).
The tensile strength of the tissue 1 in the MD direction is preferably about 1.0 to 6.0 N / 25 mm, more preferably about 1.0 to 3.0 N / 25 mm. The tensile strength of the tissue 1 in the CD direction is preferably about 0.3 to 4.0 N / 25 mm, more preferably about 0.3 to 1.0 N / 25 mm.

In the present embodiment, each of the recesses 2 has an extension direction that coincides with the MD direction, and a plurality of recesses 2 are provided along the side-by-side direction (CD direction) that is orthogonal to the extension direction.
With such a configuration, the feel of the tissue 1 can be improved. Further, even when a liquid such as a moisturizer is impregnated, the generation of wrinkles in the CD direction of the tissue 1 (moisturizing tissue) can be suitably suppressed.

The base paper (base material) of Tish 1 can be obtained by making a pulp slurry using a known paper machine. Examples of the pulp component contained in the pulp slurry include wood pulp, non-wood pulp, and deinked pulp.
Examples of wood pulp include broadleaf pulp (blightwood kraft pulp (LKP)), coniferous tree pulp (coniferous kraft pulp (NKP)), sulfate pulp (SP), dissolved pulp (DP), soda pulp (AP), and unbleached pulp. Examples thereof include chemical pulps such as kraft pulp (UKP) and oxygen bleached kraft pulp (OKP). Examples of wood pulp include semi-chemical pulp such as semi-chemical pulp (SCP) and chemiground wood pulp (CGP), and mechanical pulp such as crushed wood pulp (GP) and thermomechanical pulp (TMP, BCTMP). Can be mentioned.

Examples of the non-wood pulp include cotton pulp such as cotton linter and cotton lint, non-wood pulp such as hemp, straw and bagasse, and cellulose, chitin and chitosan isolated from sea squirts and seaweed. ..
Examples of the deinked pulp include pulp obtained by deinking from used paper as a raw material.
As the pulp component, one of the above pulps may be used alone, or two or more of them may be mixed and used.

As the pulp component, it is preferable to use at least one selected from softwood pulp and hardwood pulp. Among them, as the pulp component, it is preferable to use softwood pulp and hardwood pulp in combination, and it is more preferable to use softwood kraft pulp (NKP) and hardwood kraft pulp (LKP) in combination.

The pulp slurry may contain an arbitrary component in addition to the pulp component. Examples of the optional component include a dry paper strength agent, a wet paper strength agent, a softener, and the like.
Examples of the dry paper strength agent include cationized starch, polyacrylamide (PAM), carboxymethyl cellulose (CMC) and the like.
Examples of the wet paper strength agent include polyamide epichlorohydrin, urea, melamine, and heat-crosslinkable polyacrylamide.
Examples of the softener include anionic surfactants, nonionic surfactants, cationic surfactants, amphoteric ionic surfactants and the like.

The number of recesses 2 passing through a range of 1 cm in length along the side-by-side direction (CD direction) of the tissue 1 (hereinafter referred to as "the number of recesses 2 per unit length") is not particularly limited, but is 0. The number is preferably about 5.5 to 9.5, more preferably about 1 to 6, and even more preferably about 1 to 3. By providing the recesses 2 at relatively wide intervals in this way, the effect of improving the feel of the tissue 1 and the effect of suppressing the generation of wrinkles when the liquid is applied can be further enhanced.
Specifically, the number of recesses 2 per unit length (1 cm) can be obtained as follows. First, a virtual line is set along the side-by-side direction (CD direction) of the tissue 1, and the number of recesses 2 passing through the virtual line is visually measured. Then, by dividing the measured number of the recesses 2 by the length of the set virtual line, the number of the recesses 2 per unit length can be obtained.

Further, the recesses 2 may be provided unevenly in a predetermined region of the tissue 1, but it is preferable that the recesses 2 are uniformly provided over the entire surface of the tissue 1. This makes it possible to impart a similar feel to the entire surface of the tissue 1.
In particular, the ratio occupied by the recess 2 (occupied area ratio) in the plan view of the tissue 1 is preferably about 5 to 95%, more preferably about 10 to 50%, and more preferably about 10 to 30%. It is more preferable to have. The presence of the recess 2 in such an occupied area ratio makes it possible to further enhance the uniformity of the feel of touch on the entire surface of the tissue 1.

The average width of each recess 2 is preferably about 0.5 to 9.5 mm, more preferably about 0.5 to 5 mm, and even more preferably about 0.5 to 2.5 mm. With such a configuration, the recess 2 can be reliably formed while preventing the tissue 1 from being torn. In the illustrated configuration, the width of each recess 2 is constant along the longitudinal direction, but the width may change in the middle of the longitudinal direction.
The average distance between the two adjacent recesses 2 is preferably about 0.5 to 9.5 mm, more preferably about 2.5 to 9.5 mm, and more preferably about 3.0 to 9.5 mm. It is more preferable to have. With such a configuration, the band-shaped convex portions 3 can be densely arranged, so that the feel of the tissue 1 can be further improved.

The average depth of each recess 2 is preferably about 0.1 to 1.0 mm, more preferably about 0.1 to 0.7 mm, and more preferably about 0.1 to 0.4 mm. More preferred. By setting the depth of each recess 2 in the above range, it is possible to further improve the feel of the tissue 1 and more preferably suppress the generation of large and small wrinkles.

The weighing of tissue 1 (or moisturizing tissue) with one ply is preferably about 5 to 30 g / m ² , more preferably about 5 to 25 g / m ² , and about 10 to 20 g / m ² . It is more preferable to have. If the weighing is in the above range, the strength of the tissue 1 (base material) becomes sufficiently high, and embossing becomes easy. It can also increase the flexibility and productivity of Tish 1.
The tissue 1 may be a single ply, but is preferably a plurality of plies. As a result, the strength of the tissue 1 can be increased and the fluffy feeling of the tissue 1 can be improved.

The average thickness of the tissue 1 (or moisturizing tissue) with two plies is preferably about 80 to 250 μm, more preferably about 90 to 220 μm, and even more preferably about 100 to 200 μm. With the tissue 1 having such an average thickness, the recess 2 can be reliably formed by embossing without impairing the softness.
Such tissue 1 can be used as it is, but it can also be used as a moisturizing tissue impregnated with a moisturizer.

Moisturizing agents include, for example, aloe extract, prolonging herb extract, otogirisou extract, barley extract, orange extract, seaweed extract, chamomile extract, cucumber extract, confrey extract, gobo extract, shiitake extract, dioe extract, perilla extract, sage extract, and duke. Extract, winter worm summer grass extract, dokudami extract, hatakeshimeji extract, biwa extract, grape leaf extract, fuyubodaiju extract, prune extract, hechima extract, buttonpi extract, maikai extract, momonoha extract, lily extract, apple extract, almond oil, olive oil, sesame oil, saflower oil , Dimethyl silicone, silicone oil, modified silicone, soybean oil, camellia oil, castor oil, jojoba oil, mink oil, palm oil, lanolin, arabinose, galactose, xylose, glucose, sucrose, sorbitol, fructose, maltose, maltol, mannose , Mitsurou, Hyaluronic Acid, Placenta Extract, Lambnorth, Xylobiose, Xylooligosaccharide, Tuberose Polysaccharide, Trisaccharide, Trehalose, Soluble Collagen, Glycyrrhizin, Chondroitin Sulfate, Diglycerin, Squalane, Ceramide Similar Compounds, Triglycerin, Urea, Vitamin C Lin Examples thereof include acid ester calcium salt, vitamin E, sodium pyrrolidone carboxylate, hinokithiol, liquid paraffin, vaseline, polyhydric alcohol and the like.

Among these moisturizers, aloe extract, prolonging herb extract, otogirisou extract, confree extract, perilla extract, sage extract, ceramide-like compound, dokudami extract, hatakeshimeji extract, biwa extract, fuyubodaiju extract, buttonpi extract, sunflower oil, jojoba oil , Lanorin, hyaluronic acid, placenta extract, ramnorth, xylooligosaccharide, soluble collagen, glycerin, chondroitin sulfate, squalane, urea and polyhydric alcohols are preferred.

Examples of the polyhydric alcohol include ethylene glycol, glycerin, 1,3-butylene glycol, propylene glycol and the like. Above all, the moisturizer preferably contains glycerin. As the moisturizer, one of the above compounds may be used alone, or two or more of them may be used in combination.
Instead of the moisturizer, the tissue 1 may be impregnated with a disinfectant, a chemical solution containing a medicinal ingredient, a liquid containing a fragrance, a coloring liquid containing a pigment, or the like.

Such a moisturizing tissue can be produced, for example, as follows.
First, the base paper of the moisturizing tissue is produced by making a pulp slurry using a paper machine.
This paper machine generally includes a wire part, a press part, a dryer part, a calendar part, and a reel part.

In the wire part, the supplied pulp slurry is dehydrated and made into a sheet.
In the wire part, the pulp slurry can be supplied to the forming unit to form a two-layer papermaking sheet as a base paper. If the forming unit is made of three layers, a sheet made of three layers can be formed.
In the forming unit, the component mixing ratios of the pulp slurries forming each layer may be different. As a result, the properties of each layer constituting the sheet may be different.

In the press part, pressure is applied to the sheet formed in the wire part to squeeze (ie, dehydrate) the water in the sheet. By applying pressure to the sheet, the surface of the sheet can be smoothed and at the same time the density of pulp components can be adjusted.
In the dryer part, the sheet obtained through the press part is dried. It is preferable to use a Yankee dryer for drying. As a result, the wet paper sheet can be turned into a dry sheet (base paper).

In the calendar part, the surface of the dried sheet is pressed and stretched to smooth the surface of the sheet.
In the reel part, the base paper obtained through the above steps is wound up to form a roll body.

The paper machine preferably has a winder part after the paper machine. In the winder part, two or more rolls composed of one layer of base paper obtained in the reel part are prepared, and the base papers of each roll are overlapped to form a base paper (base material) having two or more plies. Further, in the winder part, calendar processing may be performed on a base paper having two or more plies.

Next, a moisturizer is applied to the obtained base paper.
Here, as a method of applying the moisturizer to the base paper, for example, a roll coat method such as an offset gravure method, a direct gravure method, a kiss coat method, or a die coat method can be used.

Next, a linear recess 2 is formed in the base paper coated with the moisturizer.
This is done, for example, by sandwiching a base paper between a pair of embossed rolls and embossing a convex portion formed on the surface of the embossed rolls. As a result, the base paper is embossed.
Examples of the material constituting the surface of the embossed roll include a metal material, a resin material, a rubber material and the like.
Then, the embossed base paper is cut to a desired length. This gives a moisturizing tissue.

<Second Embodiment>
Next, a second embodiment of the tissue of the present invention will be described.
Hereinafter, the tissue of the second embodiment will be described, but the differences from the tissue of the first embodiment will be mainly described, and the same matters will be omitted.
The tissue 1 of the second embodiment is the same as the tissue 1 of the first embodiment except that the extending direction of the recess 2 is different.

FIG. 3 is a plan view schematically showing a second embodiment of the tissue of the present invention.
As shown in FIG. 3, in the tissue 1 of the second embodiment, each recess 2 is inclined with respect to the MD direction, that is, is extended so that the main extension direction is the MD direction.
Here, "the main extension direction is the MD direction" means that the extension direction of the recess 2 and the MD direction coincide with each other (in the case of the first embodiment), and the extension direction of the recess 2 and the MD. This includes the case where the direction is tilted at an inclination angle of 45 ° or less (θ in FIG. 3).

The inclination angle θ is preferably 45 ° or less, more preferably 40 ° or less, and even more preferably 35 ° or less. With such an inclination angle θ, it can be considered that each recess 2 is substantially extended along the MD direction, and the effect of the present invention is fully exhibited.
The tissue 1 of the second embodiment also exhibits the same action and effect as the tissue 1 of the first embodiment.
Further, since each recess 2 is inclined and extended with respect to the MD direction, it is possible to prevent the tissue 1 from being unintentionally bent.

<Third Embodiment>
Next, a third embodiment of the tissue of the present invention will be described.
Hereinafter, the tissue of the third embodiment will be described, but the differences from the tissue of the first and second embodiments will be mainly described, and the same matters will be omitted.
The tissue 1 of the third embodiment is the same as the tissue 1 of the first embodiment except that the shape of the concave portion 3 in a plan view is different.

FIG. 4 is a plan view schematically showing a third embodiment of the tissue of the present invention.
As shown in FIG. 4, in the tissue 1 of the third embodiment, the plan view shape of each recess 2 is a broken line shape.
The tissue 1 of the third embodiment also exhibits the same actions and effects as the tissue 1 of the first and second embodiments.
Further, according to such a configuration, it is possible to more reliably prevent the tissue 1 from being torn during embossing.

When the plan view shape of each recess 2 has a broken line shape as in the present embodiment, the number of recesses 2 per unit length and the average separation distance between two adjacent recesses 2 are determined by each recess 2. It can be obtained by grasping the plan view shape as a solid line shape in which discontinuous portions of the broken line shape are connected.

<Fourth Embodiment>
Next, a fourth embodiment of the tissue of the present invention will be described.
Hereinafter, the tissue of the fourth embodiment will be described, but the differences from the tissue of the first to third embodiments will be mainly described, and the same matters will be omitted.
The tissue 1 of the fourth embodiment is the same as the tissue 1 of the first embodiment except that the shape of the concave portion 2 in a plan view is different.

FIG. 5 is a plan view schematically showing a fourth embodiment of the tissue of the present invention.
As shown in FIG. 5, in the tissue 1 of the fourth embodiment, the plan view shape of each recess 2 is a curved line formed by repeating the same waveform shape (unit shape) indicated by "T (period)" in the figure. It has a shape.
The tissue 1 of the fourth embodiment also exhibits the same action and effect as the tissue 1 of the first to third embodiments.

<Fifth Embodiment>
Next, a fifth embodiment of the tissue of the present invention will be described.
Hereinafter, the tissue of the fifth embodiment will be described, but the differences from the tissue of the first to fourth embodiments will be mainly described, and the same matters will be omitted.
The tissue 1 of the fifth embodiment is the same as the tissue 1 of the fourth embodiment except that the recesses 2 are different from each other.

FIG. 6 is a plan view schematically showing a fifth embodiment of the tissue of the present invention.
As shown in FIG. 6, in the tissue 1 of the fifth embodiment, in the two adjacent recesses 2, the period T of the plan view shape of one recess 2 is relative to the period T of the plan view shape of the other recess 2. It is arranged so as to be displaced along the MD direction (extended direction).
The amount of this deviation is not particularly limited, but is preferably about 0.1 to 0.9 cycle, more preferably about 0.2 to 0.8 cycle, and more preferably about 0.3 to 0.7 cycle. Is more preferable.
The tissue 1 of the fifth embodiment also exhibits the same action and effect as the tissue 1 of the first to fourth embodiments.

In particular, by arranging the two adjacent recesses 2 so that the periods of their planar views are deviated from each other, the shape appearing on the entire surface of the tissue 1 becomes non-monotonic. Therefore, even when the moisturizing tissue is used, the effect of suppressing the occurrence of wrinkles is further improved. Further, in this case, it is possible to suppress the occurrence of wrinkles not only in the CD direction but also in the MD direction.
Further, a portion is formed in the tissue 1 in which the separation distance (width of the convex portion 3) between the two adjacent concave portions 2 is relatively large. Therefore, the tissue 1 becomes bulky and its fluffy feeling is improved. Further, the tissue 1 is formed with a portion having a large separation distance (width of the convex portion 3) between two adjacent concave portions 2 and a portion having a small separation distance, and the difference is large. Therefore, even when the moisturizing tissue is used, the sticky feeling can be reduced.

<Sixth Embodiment>
Next, a sixth embodiment of the tissue of the present invention will be described.
Hereinafter, the tissue of the sixth embodiment will be described, but the differences from the tissue of the first to fifth embodiments will be mainly described, and the same matters will be omitted.
The tissue 1 of the sixth embodiment is the same as the tissue 1 of the fourth embodiment except that the recesses 2 are different from each other.

FIG. 7 is a plan view schematically showing a sixth embodiment of the tissue of the present invention.
As shown in FIG. 7, in the tissue 1 of the sixth embodiment, the two adjacent recesses 2 are arranged so as to be axisymmetric with respect to the axis of symmetry O along the MD direction (extension direction). ..
The tissue 1 of the sixth embodiment also exhibits the same action and effect as the tissue 1 of the first to fifth embodiments.

In particular, by arranging the two adjacent recesses 2 so as to be line-symmetrical with respect to the axis of symmetry O along the MD direction, the shape appearing on the entire surface of the tissue 1 becomes non-monotonic. Therefore, even when the moisturizing tissue is used, the effect of suppressing the occurrence of wrinkles is further improved. Further, in this case, it is possible to suppress the occurrence of wrinkles not only in the CD direction but also in the MD direction.
Further, a portion is formed in the tissue 1 in which the separation distance (width of the convex portion 3) between the two adjacent concave portions 2 is relatively large. Therefore, the tissue 1 becomes bulky and its fluffy feeling is improved. Further, the tissue 1 is formed with a portion having a large separation distance (width of the convex portion 3) between two adjacent concave portions 2 and a portion having a small separation distance, and the difference is large. Therefore, even when the moisturizing tissue is used, the sticky feeling can be reduced.

<7th Embodiment>
Next, a seventh embodiment of the tissue of the present invention will be described.
Hereinafter, the tissue of the seventh embodiment will be described, but the differences from the tissue of the first to sixth embodiments will be mainly described, and the same matters will be omitted.
The tissue 1 of the seventh embodiment is the same as the tissue 1 of the sixth embodiment except that the shape of the concave portion 2 in a plan view is different.

FIG. 8 is a plan view schematically showing the seventh embodiment of the tissue of the present invention.
As shown in FIG. 8, in the tissue 1 of the seventh embodiment, each recess 2 has a bent line shape in which the same handle shape (unit shape) is repeated.
The tissue 1 of the seventh embodiment also exhibits the same action and effect as the tissue 1 of the first to sixth embodiments.

<8th Embodiment>
Next, an eighth embodiment of the tissue of the present invention will be described.
Hereinafter, the tissue of the eighth embodiment will be described, but the differences from the tissue of the first to seventh embodiments will be mainly described, and the same matters will be omitted.
The tissue 1 of the eighth embodiment is the same as the tissue 1 of the first embodiment except that the shape of the concave portion 2 in a plan view is different.

FIG. 9 is a plan view schematically showing an eighth embodiment of the tissue of the present invention.
As shown in FIG. 9, in the tissue 1 of the eighth embodiment, each recess 2 has a bent line shape in which the same handle shape (unit shape) is repeated.
The tissue 1 of the eighth embodiment also exhibits the same action and effect as the tissue 1 of the first to seventh embodiments.

<9th embodiment>
Next, a ninth embodiment of the tissue of the present invention will be described.
Hereinafter, the tissue of the ninth embodiment will be described, but the differences from the tissue of the first to eighth embodiments will be mainly described, and the same matters will be omitted.
The tissue 1 of the ninth embodiment is the same as the tissue 1 of the eighth embodiment except that the shape of the concave portion 2 in a plan view is different.

FIG. 10 is a plan view schematically showing a ninth embodiment of the tissue of the present invention.
As shown in FIG. 10, in the tissue 1 of the ninth embodiment, the two adjacent recesses 2 are connected to each other via a plurality of line segments to form a honeycomb-shaped recess 2 as a whole. There is. Further, in such a honeycomb-shaped recess 2, the period of one of the two adjacent recesses 2 in the plan view shape is deviated by 0.5 cycle along the MD direction with respect to the cycle of the other plan view shape. Moreover, it can be regarded as being formed by arranging so that parts of each other overlap (have a part connected to each other). The tissue 1 has a plurality of convex portions 3 having a hexagonal shape (polygonal shape) in a plan view shape defined by the honeycomb-shaped concave portions 2.
The tissue 1 of the ninth embodiment also exhibits the same action and effect as the tissue 1 of the first to eighth embodiments.

<10th Embodiment>
Next, the tenth embodiment of the tissue of the present invention will be described.
Hereinafter, the tissue of the tenth embodiment will be described, but the differences from the tissue of the first to ninth embodiments will be mainly described, and the same matters will be omitted.
The tissue 1 of the tenth embodiment is the same as the tissue 1 of the ninth embodiment except that the shape of the concave portion 2 in a plan view is different.

FIG. 11 is a plan view schematically showing the tenth embodiment of the tissue of the present invention.
As shown in FIG. 11, in the tissue 1 of the tenth embodiment, a first recess group composed of a plurality of recesses 2 arranged so as to be tilted at a positive tilt angle with respect to the MD direction, and the first recess group thereof. A grid-like recess 2 is formed as a whole, including a second recess group composed of a plurality of recesses 2 arranged so as to intersect the recesses of the above and incline at a negative inclination angle with respect to the MD direction. ing. The tissue 1 has a plurality of convex portions 3 having a rhombic shape (a rectangular shape long in the MD direction) defined by the grid-shaped concave portions 2.

The absolute value of the tilt angle of the recesses 2 constituting the first recess group and the second recess group is the same as the tilt angle θ described in the second embodiment.
The tissue 1 of the tenth embodiment also exhibits the same action and effect as the tissue 1 of the first to ninth embodiments.

Although the tissue of the present invention has been described above, the present invention is not limited to the configuration of the above-described embodiment. For example, in the present invention, any two or more configurations of the first to tenth embodiments may be combined.
Specifically, the plan view shape of each recess 3 can be a shape that is a combination of two or more of a linear shape, a broken line shape, and a curved shape.
Further, in the above-described embodiment, the linear recess 2 is formed by embossing, but the linear recess 2 may be formed when the base paper is manufactured (during papermaking).

Hereinafter, the present invention will be specifically described with reference to examples, but the present invention is not limited thereto.
(Example 1)
As a raw material, a mixture of 70% by mass of softwood bleached kraft pulp (NBKP) and 30% by mass of hardwood bleached kraft pulp (LBKP) was prepared. 99.9 parts by mass of water was added to 0.1 part by mass of this mixture to prepare a pulp slurry.
This pulp slurry was machined using a two-layer papermaking twin wire former, then dehydrated and dried to obtain a base paper having a basis weight of 15.1 g / m ² . Two ply base papers were obtained by superimposing two obtained base papers.

A moisturizer containing 85% by mass of glycerin and 15% by mass of water was applied to a 2-ply base paper using an offset gravure method. Then, the base paper coated with the moisturizer was embossed. As a result, a moisturizing tissue having a recess having a plan view shape shown in FIG. 8 was manufactured.

(Example 2)
A moisturizing tissue was produced in the same manner as in Example 1 except that the conditions of the recesses were changed as shown in Table 1.
(Example 3)
A moisturizing tissue was produced in the same manner as in Example 1 except that the concave portion having a plan view shape shown in FIG. 10 was formed.

(Example 4)
A moisturizing tissue was produced in the same manner as in Example 1 except that the conditions of the recesses were changed as shown in Table 1.
(Example 5)
A moisturizing tissue was produced in the same manner as in Example 1 except that the concave portion having a plan view shape shown in FIG. 1 was formed.

(Example 6)
A moisturizing tissue was produced in the same manner as in Example 1 except that the concave portion having a plan view shape shown in FIG. 3 was formed.
(Example 7)
A moisturizing tissue was produced in the same manner as in Example 6 except that the conditions of the recesses were changed as shown in Table 1.

(Example 8)
A moisturizing tissue was produced in the same manner as in Example 6 except that the conditions of the recesses were changed as shown in Table 1.
(Example 9)
A moisturizing tissue was produced in the same manner as in Example 5 except that the conditions of the recesses were changed as shown in Table 1.

(Comparative Example 1)
A moisturizing tissue was produced in the same manner as in Example 1 above, except that dot-shaped concave portions (convex portions) arranged in a scattered pattern were formed by embossing.
(Comparative Example 2)
A moisturizing tissue was produced in the same manner as in Example 1 except that the embossing process was omitted.

2. 2. Measurement and evaluation 2-1. Measurement of Occupied Area Ratio and Average Depth of Recesses The shape of the recesses was measured using a 3D shape measuring instrument VR-3200 and an analysis application VR-H2A (both manufactured by KEYENCE). The procedure is as follows.
I: Using a 3D shape measuring instrument VR-3200, the 3D shape of the recess was photographed at a magnification of 12 times.
II: Using the function of the analysis application VR-H2A, a reference line was set for all 3D shapes of the recess.
III: Using the distortion correction function of the shape correction tool provided in the same application, the distortion was corrected for the measurement data of the 3D shape of the recess.

IV: Using the function of the same application, the area below the reference line is defined as the recess, and the area when the recess is viewed two-dimensionally (planar) is defined as the "recess area", which occupies the plane of the moisturizing tissue. (Occupied area ratio) was calculated.
At the same time as V: IV, the average value of the depth of the recess was calculated. This was determined by measuring the depth of the recesses at 6 randomly selected locations of 5 samples per level and averaging the total 30 values obtained.

2-2. Measurement of average width and average separation distance of recesses I: The operation was performed in the same manner as in step III in "2-1. Measurement of occupied area ratio and average depth of recesses".
II: Using profile measurement, the average value of the width of the recess and the separation distance was calculated. This is done by extracting images from 4 randomly selected locations of 5 samples per level, obtaining 20 extracted images, and then randomly selecting 2 locations of each extracted image. The width of the recess and the separation distance were measured, and the obtained 40 values were averaged to obtain the value.

2-3. Measurement of Basis Weight of Moisturizing Tish The moisturizing tees obtained in each Example and each comparative example were peeled off into two sheets, and the weighing of the 1-ply moisturizing tee was measured according to JIS P 8124.

2-4. Measurement of average thickness of moisturizing tissue The thickness of the moisturizing tissue (2-ply) obtained in each example and each comparative example was measured by using a thickness gauge (manufactured by Highbridge Manufacturing Co., Ltd.) to measure the stylus at 1 mm per second. The value when lowered at the following speed was read. The measured pressure was 50 kPa.
For the average thickness, prepare 10 samples of moisturizing tissue (2 plies), measure the thickness of each sample at 3 randomly selected locations, and average the values obtained at 30 locations in total. Asked by. The thickness was measured in an environment compliant with ISO187 (temperature 23 ± 1 ° C., relative humidity 50 ± 2%).

2-5. Measurement of Tensile Strength First, a sample was prepared by cutting the moisturizing tissue (2-ply) obtained in each Example and each Comparative Example into a width of 25 mm and a span length of 100 mm. Next, in the MD direction and the CD direction of this sample, the tensile strength was measured according to JIS P 8113-2006 using a horizontal tensile tester (manufactured by Kumagai Riki Kogyo Co., Ltd.). The measurement was performed 10 times in each of the MD direction and the CD direction, and the average value was calculated.
The tensile speed was 10 mm / min. The tensile strength was measured in an environment compliant with ISO187 (temperature 23 ± 1 ° C., relative humidity 50 ± 2%).

2-6. Evaluation of the occurrence of large wrinkles and overall swell The degree of occurrence of large wrinkles and overall swell in the moisturizing tissue obtained in each Example and each Comparative Example was evaluated according to the following evaluation criteria. Specifically, we asked 20 male and 20 female testers (40 in total) to score the degree of large wrinkles and overall swell in the moisturizing tissue according to the following evaluation criteria, and calculate the average value. I asked.

<Evaluation criteria>
5: No large wrinkles or overall swell.
4: There are few large wrinkles and overall swell.
3: Large wrinkles and overall swell are slightly less.
2: Large wrinkles and overall swell are slightly more frequent.
1: There are many large wrinkles and overall swells.

2-7. Evaluation of the occurrence of small wrinkles The degree of occurrence of small wrinkles in the moisturizing tissue obtained in each Example and each Comparative Example was evaluated according to the following evaluation criteria. Specifically, 20 testers each for men and women (40 in total) were asked to score the degree of occurrence of small wrinkles in the moisturizing tissue according to the following evaluation criteria, and the average value was calculated.

<Evaluation criteria>
5: No small wrinkles occur.
4: There are few small wrinkles.
3: There are few small wrinkles.
2: There are a few small wrinkles.
1: Many small wrinkles occur.

2-8. Evaluation of fluffy feeling The fluffy feeling (feeling of touch) of the moisturizing tissue obtained in each Example and each Comparative Example was evaluated according to the following evaluation criteria. Specifically, 20 testers each for men and women (40 in total) were asked to score the fluffy feeling of the moisturizing tissue according to the following evaluation criteria, and the average value was calculated.

<Evaluation criteria>
5: Good 4: Somewhat good 3: Normal 2: Somewhat bad 1: Bad

2-9. Evaluation of Moist Feeling The moist feeling (feeling of touch) of the moisturizing tissue obtained in each Example and each Comparative Example was evaluated according to the following evaluation criteria. Specifically, 20 testers each for men and women (40 in total) were asked to score the moist feeling of the moisturizing tissue according to the following evaluation criteria, and the average value was calculated.

<Evaluation criteria>
5: Good (strongly moist and not sticky)
4: Slightly good (moist but slightly sticky)
3: Normal (moist and sticky)
2: Slightly bad (more sticky than moist)
1: Bad (strongly sticky and not moist)

Since the moisturizing tissue obtained in each example is provided with a linear recess by embossing, the effect of suppressing the occurrence of wrinkles and the effect of enhancing the feeling of touch are compared with the moisturizing tissue obtained in each comparative example. Was noticeably demonstrated.
It was also confirmed that the effect of suppressing the occurrence of wrinkles and the effect of enhancing the feeling of touch were further improved by appropriately setting the shape, number, average width, etc. of the concave portions in a plan view.
When the moisturizing tissue is manufactured in the same manner as in the first embodiment, the moisturizing tissue is carried out in the same manner as in the first embodiment, except that the concave portions having a plan view shape shown in FIGS. 2, 4 to 7, 9 and 11 are formed. The same effect as in Example 1 can be obtained.

1 Moisturizing tissue 2 Concave part 3 Convex part O Symmetry axis T period

Claims (11)

A moisturizing tissue that contains a moisturizer.
The tensile strength in the second direction orthogonal to the first direction is smaller than the tensile strength in the first direction.
A moisturizing tissue characterized in that a plurality of linear recesses extended so that the main extension direction is the first direction are provided along the side-by-side direction orthogonal to the extension direction. The moisturizing tissue according to claim 1, wherein the number of the recesses passing through the range of 1 cm in length along the side-by-side direction of the moisturizing tissue is 0.5 to 9.5. The moisturizing tissue according to claim 1 or 2, wherein the planar view shape of each recess is a shape including a linear shape, a broken line shape, or a curved shape. The moisturizing tissue according to any one of claims 1 to 3, wherein the shape of each recess in a plan view is a shape obtained by repeating the same shape. In the two adjacent recesses, the period of the plan view of one of the recesses deviates by 0.1 to 0.9 cycle along the extension direction with respect to the cycle of the plan view of the other recess. The moisturizing tissue according to claim 4, which is arranged in. The moisturizing tissue according to claim 4, wherein the two adjacent recesses are arranged so as to be line-symmetrical with respect to the axis of symmetry along the extension direction. The moisturizing tissue according to any one of claims 1 to 6, wherein the two adjacent recesses have portions connected to each other. The moisturizing tissue according to any one of claims 1 to 7, wherein the average width of each recess is 0.5 to 9.5 mm. The moisturizing tissue according to any one of claims 1 to 8, wherein the average distance between the two adjacent recesses is 0.5 to 9.5 mm. The moisturizing tissue according to any one of claims 1 to 9, wherein the recess occupies 5 to 95% in the plan view of the moisturizing tissue. The moisturizing tissue according to any one of claims 1 to 10, wherein the average depth of each recess is 0.1 to 1.0 mm.

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