TW202425897A - Facial tissue storage body - Google Patents

Abstract

The problem to be solved by the present invention is to provide a tissue paper storage body which exhibits "softness", "moist feeling", and "smooth feeling" even with a low basis weight. In order to solve this problem, the tissue storage body according to the present invention is a tissue storage body in which a bundle formed by folding and stacking two layers of tissue in a removable manner is stored in a storage box. The base weight of one layer of the surface paper is 9.0-13.6 g/m2, the paper thickness of the other layer of the surface paper is 100-130 [mu] m, and the total area of the surface paper contained in the containing box is 9.0-10.8 m2/containing box.

Description

Tissue Storage

The present invention relates to a tissue paper storage body in which a tissue paper bundle is stored.

Facial tissues with added liquid medicine, called moisturizing tissues and lotion tissues, are suitable for blowing noses and facial cleansing even if they are dry tissues. Moisturizing tissues increase the moisture content of the paper through the moisture absorption effect of the liquid medicine, and can improve the "softness", "moisture" and "smoothness" compared to facial tissues without added liquid medicine.

The mainstream moisturizing facial paper is a high-end type with a basis weight of about 15 to 17 g/ ^m2 and a high product price. However, there is also a type of moisturizing facial paper with a basis weight of slightly lower than about ¹⁴ g/m2, which is easy to use and has a low product price.

The tissue paper container, in particular, is a general-purpose product and a product of a general price range, and is configured to store non-moisturizing tissue paper having a basis weight of about 10 to 11 g/ ^m2 to which no moisturizing liquid is added.

[Prior technical literature] (Patent literature) Patent literature 1: Japanese Patent Publication No. 2019-150138

[Problem to be solved by the invention] However, for consumers who use conventional general-purpose moisturizing facial tissues on a daily basis, they are dissatisfied with the "softness", "moisture" and "smoothness" of general-purpose and generally priced non-moisturizing facial tissues, especially when blowing their noses and wiping their faces.

On the other hand, for consumers who use generic and generally priced non-moisturizing facial tissues on a daily basis, even generic moisturizing facial tissues feel overkill and the product prices are very expensive.

Therefore, for the moisturizing facial paper with a further lower basis weight than the conventional general type, the following problems have been discussed.

In moisturizing paper, the strength is lower than that of base paper due to the increase in moisture content. If the basis weight of moisturizing paper is too low, it is difficult to ensure the required strength. In addition, the fiber density will become coarser, resulting in a decrease in "smoothness".

If the amount of moisturizing solution is reduced in order to ensure the required strength, it will be difficult to fully feel the "softness" and "moisture" produced by the moisturizing solution. If it is set too much, the "stickiness" will increase.

Therefore, it is difficult to ensure the desired quality of low basis weight moisturizing facial tissue. In particular, it is difficult to achieve low basis weight moisturizing facial tissue that satisfies consumers.

Therefore, the main problem of the present invention is to provide a tissue storage body that can provide sufficient "softness", "moisture" and "smoothness" even for low-weight moisturizing tissue.

[Technical means for solving the above-mentioned problem] The first means for solving the above-mentioned problem is a facial tissue storage body, which stores a bundle of facial tissues consisting of 2 layers (ply) of 1 group folded and stacked in a pull-out manner in a storage box; the facial tissues contain a moisturizing liquid, the basis weight of 1 layer is 9.0 to 13.6 g/ ^m2 , the paper thickness of 2 layers is 100 to 130 μm, and the total area of the facial tissues stored in the storage box is 9.0 to 10.8 ^m2 /storage box.

A second means is that in the tissue paper container according to the first means, a value of total sheet area/moisturizing liquid amount is 400 to 550 m ² /g.

A third means is that in the tissue storage box according to the first means, the value of the amount of moisturizing liquid/storage box volume is 0.015 to 0.030 g/cm ³ .

A fourth means is that in the tissue paper container according to the first means, the content of the moisturizing liquid in the tissue paper is 16 to 24% by mass.

A fifth means is the tissue paper container according to the first means, wherein the Sdr of both sides of the tissue paper is 0.02 to 0.04.

A sixth means is the tissue paper container according to the first means, wherein the Sq (mm) of both sides of the tissue paper is 0.015 to 0.025.

[Effect of the invention] According to the present invention, it is possible to provide a tissue storage body that exhibits sufficient "softness", "moisture" and "smoothness" even for low-weight moisturizing tissue.

The tissue storage body of the present invention is described in detail below with reference to Figures 1 to 4. In addition, the tissue storage body of the present invention is not limited to the following embodiments, and its structure can be appropriately changed within the scope of the matters described in this specification (including the scope of patent application and drawings).

The tissue storage body 1 of the present embodiment is a tissue storage body of a so-called draw-out type in which a plurality of tissue papers 2t, 2t ... containing moisturizing liquid are folded and stacked in a storage box 10 having a take-out hole 20 formed on a top surface 11, wherein the take-out hole 20 has a portion closed in a ring shape, and when the tissue paper 2t is taken out from a take-out hole 20X formed by tearing the take-out hole 20 during use, a portion of the tissue paper 2t of the lower layer of the adjacent stack is exposed from the take-out hole 20X. In particular, the total area of the tissue papers in the storage box is 9.0 to 10.8 ^m2 /storage box.

[Storage Box] The storage box 10 storing the bundle 2 of facial tissue 2t is a box in the shape of a right parallelepiped, also called a carton box. This storage box 10 constitutes the product appearance; as shown in FIG. 1 and FIG. 2, the facial tissue storage body 1 has a carton having a ring-shaped outlet forming hole 20 on the top portion 11; and a resin film 31 covering the outlet forming portion 20a surrounded by the aforementioned outlet forming hole 20 from the inner side of the carton.

The carton is a paper box body constituting the outer contour of the storage box 10, and its size, shape, unfolded shape, etc. can adopt the known carton structure of the storage box 10. For example, in the form shown in Figures 1 and 2, it can be illustrated that after the bottom surface portion (not shown) and one long side surface portion 13 are bonded to the inside of the box via an adhesive portion to form a cylindrical shape, the folds F1, F2, and F3 extending from the top surface portion 11, the bottom surface portion, and the long side surface portion 13 connected thereto are folded back to the inside of the box, and the contact portions of the folds F1, F2, and F3 are bonded by hot-melt adhesives or the like to form a structure of the short side surface portion 14. In the storage box 10 of the embodiment, the flap F1 from the long side surface 13 is folded back, the flap F2 from the bottom surface 12 is folded back and overlapped with the flap F1 from the long side surface 13, and the flap F3 from the top surface 11 is folded back and overlapped with the flap F2 from the bottom surface 12 to form the short side surface 14. However, the storage box 10 is not limited to this structure.

The raw material of the paper box constituting the storage box 10 can be a known paper raw material mainly made of various pulps such as virgin pulp and waste paper pulp. The raw material of the paper box is preferably a clay coated news back with a basis weight of 250 to 500 g/ ^m2 , preferably 350 to 400 g/ ^m2 .

On the other hand, the hole 20 for forming the take-out port formed on the top portion 11 of the carton constituting the storage box 10 is formed in a ring shape, and is formed by a known method and a cutting connection ratio, and the specific shape of the range enclosed thereby is not necessarily limited. Among them, in the storage box 10, as shown in the example of the figure, it is represented by a roughly elliptical shape or a rectangular shape with the direction along the long side of the top of the carton as the long side, because it is necessary to improve the take-out performance and convenience, and in the present invention, this shape that can be manufactured by most existing manufacturing lines is also applicable.

On the other hand, the resin film 31 is, for example, a rectangular or elliptical shape larger than the outlet forming portion 20a, and is adhered to the outer side of the outlet forming portion 20a on the inner side of the top of the carton in a manner that does not affect the cutting and peeling of the outlet forming hole 20. The preferred raw material of the resin film 31 is a polyethylene film, but it can also be exemplified by polypropylene, polyester, etc.

The thickness of the resin film 31 is preferably 10 to 200 μm. If it is less than 10 μm, the strength is insufficient and the probability of tearing or breaking when the paper 2t is removed increases. On the contrary, if it exceeds 200 μm, there is no strength problem, but it is difficult to remove and the cost increases.

The resin film 31 has a slit 30 formed therein, and the slit 30 is located in the range surrounded by the take-out opening forming eyelet 20. Therefore, as shown in Figs. 1 and 2, the take-out opening forming eyelet 20 is ruptured to cut and peel off the take-out opening forming portion 20a, thereby forming the take-out opening 20X on the top surface portion 11 of the storage box 10, and the resin film 31 and the slit 30 formed therein are exposed through the take-out opening 20X. The length of the slit 30 can be set to an appropriate length, and can be set to a length that is appropriate in relation to the size of the take-out opening 20X.

The tissue paper 2t stored in the bundle 2 in the storage box 10 is taken out one sheet at a time through the take-out outlet 20X through the slit 30. The tissue paper 2t exposed from the take-out outlet 20X is supported by the slit 30 to prevent it from falling into the storage box 10.

In addition, the size of the storage box mentioned above is not limited. As shown in FIG1, the width (long side) L1 of the storage box can be 200 to 225 mm, the depth (short side) L2 of the storage box is 95 to 120 mm, and the height L3 is 70 to 105 mm. The length of each part of the storage box is measured with a JIS 1 grade metal ruler. It is set as the average value of 5 points in each place. In addition, the volume of the storage box is calculated as L1×L2×L3.

[Bundle of facial paper] The bundle 2 of facial paper 2t is a pull-out bundle formed by folding and stacking facial paper 2t. More specifically, as shown in FIG4, the square facial paper 2t is substantially folded into two layers at the fold line edge 2C, and the edges 2B of the folded pieces are located on the folded inner surface 2A of the upper and lower adjacent facial paper, and the layers are repeatedly stacked while being staggered. In addition, this actually refers to allowing a slight folding of the edge formed during manufacturing.

As shown in FIG. 3 and FIG. 4, when the folding piece of the topmost sheet of the bundle 2 of the facial paper 2t is pulled upward, the folding piece of the other sheet immediately below it is pulled upward and lifted due to friction or the like. Furthermore, the bundle 2 of the facial paper 2t of the related structure is stored with its top facing the top portion 11 of the storage box 10, and the storage box 10 has a take-out port 20X at the top portion 11. When one sheet (the topmost sheet) is pulled out from the take-out port 20X, especially from the slit 30, a part of the other sheet located immediately below it is exposed. In addition, the pull-out bundle can be formed by a known folding machine (inter-folder). The folding machine may be a device that performs folding processing by using a folding plate called a multi-stand type, a station type, or a folding plate type, or may be a device that performs folding processing by using a pair of folding rollers called a rotary type. Among them, in order to achieve low basis weight and thin paper thickness products at a low price, it is desirable to use a device that performs folding processing by using a folding plate suitable for mass and high-speed production.

[Moisturizing liquid] The moisturizing liquid has polyol as the main component. The moisture content of the tissue paper is increased by the moisture absorption of the moisturizing liquid. Examples of polyols include glycerin, diglycerin, propylene glycol, 1,3-butylene glycol, polyethylene glycol, sorbitol, glucose, xylitol, maltose, maltitol, mannitol, and trehalose. Glycerin is preferred. 1,3-propylene glycol may also be included together with glycerin. 1,3-propylene glycol reduces the "sticky feeling" and increases the refreshing touch.

The polyol content in the moisturizing solution is 50% by mass or more, preferably 70% by mass or more, and more preferably 75-95% by mass. The moisturizing solution may also contain one or more of the following ingredients as auxiliary agents that do not hinder the effect of the present invention: inorganic and organic microparticle powders, oily components such as higher alcohols such as liquid wax, cetyl alcohol, stearyl alcohol, and oleyl alcohol; moisturizing auxiliary agents such as hydrophilic polymer gelling agents, collagen, hydrolyzed collagen, hydrolyzed keratin, hydrolyzed silk protein, and hyaluronic acid; fragrances, various extracts from natural products, vitamins, emulsifiers, defoaming agents, mildew inhibitors, deodorants, antioxidants, etc.

[Facial paper] In the embodiment, the facial paper 2t forming the bundle 2 and stored in the storage box 10 is a set of 2 layers of facial paper. No embossing is formed. In the case of 1 layer or 3 layers or more, it is difficult to obtain the desired effect. This facial paper contains a moisturizing liquid, and the basis weight of 1 layer is set to 9.0 to 13.6 g/m ^2. The basis weight is preferably 10.0 to 13.4 g/m ² , and more preferably 11.5 to 12.9 g/m ^2. The basis weight of the previous, relatively cheap, general-purpose and easy-to-use moisturizing facial paper was about 14 g/m ² , and the basis weight of this 9.0 to 13.6 g/m ² is a relatively low basis weight. If the basis weight is too low, it is difficult to ensure sufficient quality strength. Basis weight is based on JIS P 8124 (2011) and is measured per ply.

The thickness of the 2-ply paper is set to 100-130μm. 105-125μm is desirable. 110-120μm is particularly desirable. Previously, the thickness of the relatively cheap, general-purpose and easy-to-use moisturizing paper was about 150μm. Comparatively, this value of 100-130μm is a thinner paper thickness. The same argument applies to the basis weight. In other words, if the paper thickness is too thin, it is difficult to ensure sufficient quality strength. This paper thickness is the value measured by fully adjusting the humidity of the 2-ply test piece under the conditions of JIS P 8111 (1998) and then using a dial thickness gauge (thickness gauge) "PEACOCK G type" (manufactured by Ozaki Seisakusho) under the same conditions. Specifically, confirm that there is no dust or debris between the plunger and the measuring table, then lower the plunger onto the measuring table, and calibrate the scale of the needle-dial thickness gauge to coincide with the zero point. Next, raise the plunger and place the test piece on the measuring table, then slowly lower the plunger at a speed of less than 1mm/second and read the measured value at this time. When measuring, be careful to make the terminal of the metal plunger (a circular plane with a diameter of 10mm) vertically contact the paper plane. The measured value of the paper thickness is set as the average value obtained by performing 10 measurements.

The present invention can present sufficient "softness", "moist feeling" and "smooth feeling" even with such low basis weight and thin paper thickness. This presentation is produced by the total area of the facial papers stored in the storage box being 9.0 to 10.8 ^m2 /storage box. The total area of the facial papers related to the present invention refers to the total area of one side of the front and back sides of the facial papers. That is, it is calculated by the area of one side of one sheet (one group) of facial paper × the number of groups. The area of one side of one sheet of facial paper is calculated by measuring the longitudinal length and the transverse length of one sheet of facial paper with a JIS 1 grade metal ruler, and calculating it as the longitudinal length × the transverse length. In addition, it is assumed to be the average value of any five sheets of facial papers excluding the top and bottom. The fold lines accompanying the extraction are smoothed to the extent that the paper will not stretch before measurement.

In the past, facial tissue, in particular, has only focused on the relationship between the "softness", "moisture", and "smoothness" of moisturizing facial tissue and the paper thickness and basis weight of each sheet, but has not discussed its relationship with the storage box and bundle. However, in the previous general type of moisturizing facial tissue, the total area of facial tissue stored in the storage box is 7.0 to 8.0 ^m2 /storage box. This value is obtained based on the design of the size of the general previous storage box, the size of the sheets, and the number of sheets constituting the bundle.

In this embodiment, the total area is configured so that the total area of the tissue paper is increased to 9.0 to 10.8 ^m2 per storage box. In the pull-out bundle, the tissue paper is stacked to form a bundle. Therefore, it is estimated that as long as the total area of the tissue paper in the storage box is increased, the fiber amount and the amount of moisturizing liquid in the storage box can be increased, so that the overall bundle can show a sufficient effect of the moisture absorption of the moisturizing liquid. Furthermore, in general, the tissue paper is used immediately after being taken out of the storage box, so it is estimated that even in the functionality during use, the moisturizing effect in the bundle state can be fully evaluated.

A preferred embodiment is to set the value of the total sheet area/moisturizing liquid amount to 400 to 550 ^m2 /g, both in terms of the basis weight and paper thickness and in terms of the total area of the paper as a single form. If it is within this range, the area of each unit of liquid contacting the outside air during use becomes appropriate, thereby improving the effect as a moisturizing paper. In other words, if the value of the total sheet area/moisturizing liquid amount is too low, the unit amount of liquid exists in a narrow range of the sheet and it is easy to feel sticky. On the contrary, if the value of the total sheet area/moisturizing liquid amount is too high, the unit amount of liquid exists in a wide range and it is difficult to feel sufficient moisturizing properties. Even with a low basis weight and thin paper thickness, sufficient "softness", "moisture" and "smoothness" can be exhibited if it is within the above range. Preferably, the value of the total sheet area/moisturizing liquid amount is 450 to 500 ^m2 /g.

The amount of moisturizing liquid here is the total amount of moisturizing liquid contained in the bundle calculated based on the amount of moisturizing liquid contained in the facial tissue adjusted to 23°C and 50%RH in the standard state of JIS P8111. Specifically, the following measurement is performed. First, the basis weight of each layer of facial tissue containing moisturizing liquid is measured based on the above-mentioned JIS P 8124 (2011). Next, the basis weight of each layer of two-layer facial tissue that does not contain moisturizing liquid and is made from the same or equivalent base paper as the base paper of the facial tissue containing moisturizing liquid is measured based on JIS P 8124 (2011). Next, the amount of moisturizing solution is calculated by subtracting the basis weight of the tissue paper (1 layer) that does not contain moisturizing solution from the basis weight of the tissue paper (1 layer) that contains moisturizing solution. Next, the amount of moisturizing solution is multiplied by the total area of the sheet and then converted to two layers to calculate the amount of moisturizing solution. That is, the amount of moisturizing solution is calculated as ((basis weight of 1 layer of tissue paper that contains moisturizing solution) - (basis weight of 1 layer of tissue paper that does not contain moisturizing solution)) × 2 (layer weight) × (total area of the sheet).

A preferred embodiment is to set the value of the moisturizing solution amount/storage box volume to 0.015 to 0.030 g/cm 3 as a separate embodiment, together with at least one of the values of the total area of the tissue paper and the total area of the sheets/the moisturizing solution amount, among the above-mentioned basis weight and paper thickness. The same ^{considerations} apply to the total area of the tissue paper stored in the storage box and the total area of the sheets/the moisturizing solution amount. In the case of low basis weight and thin paper thickness, the entire tissue paper in the storage box can be discussed. In particular, in the tissue paper storage body, the storage box volume and the storage box capacity are considered to be almost the same. That is, the value of the moisturizing solution amount/storage box volume can also be called the ratio of the moisturizing solution in the storage box. If it is within the above range, there is sufficient moisturizing solution in the storage box, and even with low basis weight and thin paper thickness, it can show sufficient "softness", "moisture" and "smoothness". More preferably, the value of moisturizing solution amount/storage box volume is set to 0.017-0.024g/ ^cm3 .

The desired content of moisturizing liquid in facial tissue is 16-24% by mass. If it is 16-24% by mass, it can show "softness", "moisture" and "smoothness".

In the facial tissue storage body of the embodiment, the number of facial tissue groups constituting the bundle, the size of the storage box, the size of the facial tissue, etc. are adjusted according to the total area of the facial tissue stored in the storage box, the value of the total area of the sheets/the amount of moisturizing liquid, and the value of the amount of moisturizing liquid/the volume of the storage box. Regarding these adjustments, the size of the facial tissue of the previous moisturizing facial tissue products was 200 to 205 mm (longitudinal direction) × 205 to 225 mm (lateral direction), and the number of groups was set to 180 to 200 groups. In the embodiment with low basis weight and thin paper thickness, it is particularly desirable that the size of the facial tissue is set to 202 to 208 mm (longitudinal direction) × 188 to 196 mm (lateral direction), and the number of groups is set to 220 groups or more, preferably 230 groups or more. Regarding the size of facial paper, it is desirable that the area of one sheet of facial paper be less than 0.041 m ² , and particularly less than 0.040 m ² .

That is, in the embodiment, the lateral dimension of the facial paper is smaller and the number of groups is greater than that of the previous product. Compared with the above-mentioned previous general moisturizing facial paper, the bundle consisting of this size and number of groups has a smaller top surface area (bottom surface area). The number of groups that can be stored in the storage box is increased, thereby ensuring the total area of the facial paper and the value of the total area of the sheets/the amount of moisturizing liquid, and the top surface area (bottom surface area) is reduced, thereby making the moisturizing liquid in the facial paper less likely to evaporate. In addition, although the increase in the number of groups will cause the height of the bundle to increase, the increase will be reduced in accordance with the low basis weight and thin paper thickness. In addition, the increase in the number of groups increases the number of layers and can suppress the evaporation of the moisturizing liquid.

Furthermore, in accordance with the preferred embodiment of the size and number of tissue paper 2t, the storage box is made compact, thereby being able to adjust the value of the amount of moisturizing liquid/storage box volume. The size of the storage box 10 is not limited, but it is desirable to be larger than the bundle 2 of tissue paper 2t, so that the inner diameter of the storage box 10 is larger than the outer shape of the bundle 2 and converges to a range of 1 to 25 mm.

In addition, in the relationship between the bundle and the storage box, the ratio of the height of the bundle to the height of the storage box is preferably less than 100%, more preferably 80-90%, and particularly preferably 83-88%. The top of the bundle does not touch the top of the storage box, and the distance between them is not too far apart, so that the moisturizing liquid is easily retained in the bundle. The height of the bundle here is the average value of the four corners of the bundle measured by placing the bundle on a horizontal platform with a JIS1 grade metal ruler.

In a preferred embodiment, the total amount of moisturizing liquid in the storage box is set to 35 to 60 g/storage box, preferably 38 to 50 g/storage box, and particularly preferably 40 to 46 g/storage box, together with at least one of the total area of the tissue paper, the total area of the sheet material/the amount of moisturizing liquid, and the amount of moisturizing liquid/storage box volume, among the basis weight and paper thickness, and as a separate embodiment. A sufficient amount of moisturizing liquid exists in the storage box, thereby being able to fully exhibit the effect of the hygroscopicity. This can be adjusted by the above-mentioned bundle, and the content ratio of the moisturizing liquid in the storage box and tissue paper.

In addition, the size of the storage box mentioned above is not limited, and can be exemplified as shown in FIG. 1, where the width (long side) L1 of the storage box is 200 to 225 mm, the depth (short side) L2 of the storage box is 95 to 120 mm, and the height L3 is 70 to 105 mm. The length of each part of the storage box is measured with a JIS 1 grade metal ruler. It is set as the average value of 5 points in each place. In addition, the volume of the storage box is calculated as L1×L2×L3.

However, it is believed that the lower basis weight of moisturizing facial paper makes it difficult to ensure the required strength, and the fiber density becomes coarser, resulting in a reduced "smoothness". In order to address this reduced strength, the moisturizing paper strength can be increased by using a moisturizing paper strength agent. By increasing the strength by increasing the content of the moisturizing paper strength agent, it is easy to have a hard texture. However, in low-basis-weight and thin facial paper, even if it does not contain moisturizing liquid, the hardness is weak, so the impact on people who feel rigidity with the increase of moisturizing paper strength agent is small. Therefore, at least within the basis weight and paper thickness within the scope of the present invention, the insufficient strength is adjusted with a moisturizing paper strength agent. Furthermore, the inventors have found that by increasing the amount of wet paper strength agent mixed, the adhesion of wet paper to the dryer can be improved when manufacturing low-weight base paper, thereby improving the quality of the surface of the paper in terms of "softness" and "smoothness" by wrinkling.

In addition, the wet tensile strength of the implemented form of the moisturizing paper does not necessarily have to be limited. The weakest is set to 30 to 40 cN/25 mm in the horizontal direction, and it can be preferably adjusted to 35 to 45 cN/25 mm. In addition, the wet tensile strength here is a value measured based on JIS P 8135 (1998), and the measurement is as follows. The test piece is cut into a width of 25 mm (± 0.5 mm) × a length of 150 mm in both the longitudinal and transverse directions. Direct measurement is performed in multiple layers. The testing machine uses a load cell tensile testing machine TG-200N manufactured by Minebea and equivalent models. In addition, the grabbing interval is set to 100 mm and the tensile speed is set to 50 m/min. The test is carried out in the following order: After the two ends of the test piece are tightly attached to the gripping part of the testing machine, water is applied horizontally to the center of the test piece with a width of 10 mm using a flat brush containing water, and then a load is immediately applied to the paper in the vertical direction, and the indicated value (digital value) when the paper breaks is read. Prepare 5 sets of samples in both the longitudinal and transverse directions and measure them 5 times each, and set the average of the measured values as the wet tensile strength in each direction.

Regarding the preferred surface properties of the above-mentioned facial paper, the Sdr of both outer sides of the two-layer sheet is particularly preferably 0.02 to 0.04.

[Sdr] This is an international standard based on the surface properties (surface roughness measurement) and surface roughness evaluation method of ISO25178. That is, the developed area (surface area) of a defined area indicates the degree of increase in the area of the defined area. In the implementation form, a paper moistening agent is added to make the base paper adhere well to the dryer, and the wrinkle rate is set to a range of 13-17%, and the releasability from the dryer is adjusted by the shape of the wrinkling scraper, the release agent, etc., so that the surface paper can feel soft and smooth. The Sdr obtained by measuring 3D image data with the One Shot 3D shape measuring machine VR-3200 and performing screen analysis with the analysis application VR-3200 is the ratio of the interface's development area and is expressed as "(area including concavities and convexities)/(area of appearance)-1". It is estimated that the difference between (area including concavities and convexities) and (area of appearance) is caused by wrinkles on the surface of the sheet, etc. If Sdr is set to the range of 0.02 to 0.04 in the implementation form, there will be appropriate concavities and convexities at the place where the finger touches without excessive buffering, and it will be flat and easy to feel "smoothness" without inconvenience.

[Sdr measurement method using One Shot 3D shape measuring machine VR-3200] The 3D image data of the surface of the sheet cut into a measurable size is measured. After the surface shape is corrected by screen processing (undulations are removed, and the correction strength is "20"), the reference surface setting is selected, and the target area to be measured is set with an arbitrary setting in the area setting. The measurement parameter applies "composite parameter Sdr". The 3D image data is analyzed in the set Sdr measurement area. The screen analysis area is set to a square range of 10mm×10mm for surface roughness measurement, and the Sdr is obtained by screen analysis. The measurement is to photograph one sheet at 5 locations and obtain 3D image data to perform screen analysis. These measurements were performed with N=5 and Sdr was calculated from their average value.

In addition, regarding the preferred surface properties of this face paper, the Sq (mm) of both outer sides of the two-layer sheet is particularly preferably 0.015 (mm) to 0.025 (mm).

[Sq(mm)] This is an international standard based on the surface properties (surface roughness measurement) and surface roughness evaluation method of ISO25178. That is, Sq, which is equivalent to the standard deviation of the distance from the average surface, is expressed as the root mean square height. In the implementation form, the base paper is added with a wet paper strength agent to make the adhesion of the base paper to the dryer good, and the wrinkle rate is set to a range of 13-17%, and the shape of the wrinkling scraper and the peeling agent are used to adjust the release property from the dryer, so as to make the surface paper feel soft and smooth. The Sq (mm) obtained by measuring 3D image data with the One Shot 3D shape measuring machine VR-3200 and performing image analysis with the analysis application VR-3200 is equivalent to the standard deviation of height. If the value is large, the surface unevenness will be felt when touching the sheet, and if the value is small, the hardness of the plane will be felt when touching the sheet. It is thought that if the Sq is large, the convex and concave parts will be felt when touching the sheet, and if the Sq is small, there will be no unevenness and the place where the finger touches will feel flat. In the implementation form, the Sq (mm) is set to 0.015 (mm) to 0.025 (mm), so that the unevenness is not easy to feel and the hardness is not easy to feel due to the relationship with the moisturizing liquid.

[Sq measurement method using One Shot 3D shape measuring machine VR-3200] The 3D image data of the surface of the sheet cut into a measurable size is measured. After the surface shape is corrected by screen processing (undulations are removed, correction strength is "20"), the reference surface setting is selected, and the target area to be measured is set with any setting in the area setting. The measurement parameter applies "height parameter Sq (mm)". The 3D image data is analyzed in the measurement area of the set Sq (mm). The image analysis area is set to a square range of 10mm×10mm for surface roughness measurement, and the Sq (mm) is obtained by image analysis. The measurement is to photograph one sheet at 5 locations and obtain 3D image data to perform image analysis. These measurements were performed with N=5, and Sq(mm) was calculated from the average value.

Furthermore, regarding the preferred surface properties of the face paper, the [Spd (1/mm ² )] of both outer sides of the two-layer sheet is preferably 7.5 (1/mm ² ) to 12.0 (1/mm ² ), and particularly preferably 9.8 (1/mm ² ) to 11.5 (1/mm ² ).

[Spd (1/mm ² )] Spd (1/mm ² ) is based on the definition of surface shape based on ISO 25178. In the implementation form, the base paper is made to adhere well to the dryer by adding a wet paper strength agent, and the wrinkle rate is set to a range of 15-19%. The shape of the wrinkle scraper and the peeling agent are used to adjust the release property from the dryer, so as to achieve a surface paper with softness and smoothness. Spd (1/mm ² ) obtained by measuring 3D image data with One Shot 3D Shape Measuring Machine VR-3200 and performing image analysis with Analysis Application VR-3200 indicates the [peak density of the mountain]. The greater the number of vertices per 1mm ² (1/mm ² ), the more dense the arrangement of the vertices will make the skin feel smoother. The vertices are estimated to be the mountain tops formed by wrinkles on the surface of the sheet. In the embodiment, if the [Spd (1/mm ² )] of both outer sides of the two-layer sheet is 7.5 (1/mm ² ) to 12.0 (1/mm ² ), it is easy to feel smoothness.

[Method for measuring Spd using the One Shot 3D shape measuring machine VR-3200] The 3D image data of the surface of a sheet of tissue paper cut into a measurable size is measured. After surface shape correction (removal of undulations, correction intensity of "20") is performed by screen processing, the reference surface setting is selected, and the target area to be measured is set with an arbitrary setting in the area setting. The measurement parameter applies "morphological parameter Spd (1/mm ² )". The 3D image data is analyzed within the measurement area of the set Spd (1/mm ² ). The screen analysis area is set to a square range of 10mm×10mm for surface roughness measurement, and the screen analysis is performed to obtain Spd (1/mm ² ). The measurement was performed by photographing one sheet at five locations and obtaining three-dimensional image data to perform image analysis. These measurements were performed with N=5, and Spd (1/mm ² ) was calculated from the average value.

Furthermore, regarding the preferred surface properties of the facial paper, the preferred Spc (1/mm) is 3.0 (1/mm) to 4.5 (1/mm), and the most preferred Spc (1/mm) to 4.3 (1/mm ² ).

[Spc(1/mm)] This is an international standard based on the surface properties (surface roughness measurement) and surface roughness evaluation method of ISO25178. In the implementation form, the base paper is added with a wet paper strength agent to make it adhere well to the dryer, and the wrinkle rate is set to a range of 13-17%. The shape of the wrinkling scraper, the peeling agent, etc. are used to adjust the release property from the dryer, so that the surface of the paper can be felt to be soft and smooth. The Spc (1/mm) obtained by measuring 3D image data with the One Shot 3D Shape Measuring Machine VR-3200 and performing image analysis with the analysis application VR-3200 indicates the average of the main curvatures of the top of the convex shape of the surface. If the value of Spc (1/mm) is small, it means that the point of contact with other objects is rounded and the resistance felt by the fingers is large. On the other hand, if the value of Spc (1/mm) is large, it means that the point of contact with other objects is pointed and the resistance felt by the fingers is small. The top of the convex shape of the surface is estimated to be the top of the mountain formed by wrinkles on the surface of the sheet. In the implementation form, setting Spc (1/mm) to 3.0 (1/mm) to 4.5 (1/mm) will provide a particularly good surface feel when touching the skin.

[Spc measurement method using One Shot 3D shape measuring machine VR-3200] The 3D image data of the surface of the sheet cut into a measurable size is measured. After performing surface shape correction (removing undulations, correction intensity is "20") by screen processing, the reference surface setting is selected, and the target area to be measured is set with any setting in the area setting. The measurement parameter applies "morphological parameter Spc (1/mm)". The 3D image data is analyzed within the measurement area of the set Spc (1/mm). The screen analysis area is set to a square range of 10mm×10mm for surface roughness measurement, and the screen analysis is performed to obtain Spc (1/mm). The measurement is to photograph a sheet at 5 locations and obtain 3D image data to perform image analysis. These measurements are performed with N=5, and Spc(1/mm) is calculated from the average value.

On the other hand, the pulp fiber in the face paper of the embodiment is not particularly limited, and is 90-100% by mass of virgin pulp and 0-10% by mass of waste paper pulp, preferably 100% by mass of virgin pulp. In particular, the virgin pulp is preferably coniferous kraft pulp (NBKP) and broadleaf kraft pulp (LBKP). The mixing ratio of these is preferably 20:80-49:51 of NBKP:LBKP. In particular, it is desirable to set NBKP:LBKP to 25:75-28:72. By mixing LBKP at a high ratio, the quality of "softness" and "smoothness" can be easily improved.

Hereinafter, the effects of the tissue paper of the present invention will be further described with reference to the embodiments and comparative examples of the tissue paper container.

[Example] Regarding the facial tissue of each example, Comparative Example 1 is a commercially available product of a general-purpose moisturizing facial tissue storage body, Comparative Examples 2 and 3 are commercially available products of a high-priced general-purpose moisturizing facial tissue storage body, and Comparative Example 4 is a commercially available product of a non-moisturizing popular facial tissue storage body. The measured values of the facial tissue of each example, the structure of the storage body, etc. are shown in Table 1 below.

In Example 3, Comparative Example 1 of a commercial product of a general-purpose moisturizing tissue storage body, and Comparative Example 4 of a commercial product of a non-moisturizing popular tissue storage body, a sensory evaluation test of tissue paper was conducted. The test was conducted with 25 subjects, and the average value was set as the evaluation point. The results are shown in Table 2.

In the sensory evaluation test, the subjects actually used the tissues of each example and evaluated the "moisture", "softness" and "smoothness". The evaluation was conducted in an absolute manner, with very good being 7 points, good being 6 points, fairly good being 5 points, neither good being 4 points, slightly bad being 3 points, bad being 2 points, and very bad being 1 point, and the average value was calculated.

[Table 1] [Table 2]

According to the results of Table 1, if the structure of the tissue storage body is observed, the "total sheet area (total area of tissue stored in the storage box)" of the embodiment is close to the "advanced type" Comparison Example 2 and Comparison Example 3. In addition, the value of "total sheet area/moisturizing liquid amount" is close to that of the advanced type Comparison Example 3, and is higher than that of the advanced type Comparison Example 2. Furthermore, the "moisturizing liquid amount/storage box volume" is between the advanced type Comparison Example 2 and Comparison Example 3. In addition, according to the results of Table 2, in the sensory evaluation, the embodiment is superior to the non-moisturizing commercial product and is evaluated almost the same as the general type.

As can be seen from the above, not only the quality of a single sheet of facial tissue, but also the structure of the specific bundle of the present invention and the relationship with the storage box is set to a design close to that of a high-end type, so that sufficient quality can be obtained even with a low basis weight and thin paper thickness. In particular, it can be set to a quality that consumers who use conventional general-purpose moisturizing facial tissue on a daily basis will not feel dissatisfied, and consumers who use non-moisturizing facial tissue of a general price will not feel that the quality is excessive, and because of the large number of sets, the product will not feel expensive due to the high price.

Furthermore, regarding the surface properties of the paper itself, the values of Spd and Spc of the embodiment indicate that the surface tends to be less uneven than that of the comparative example. It is known that the wrinkles are stretched due to the low basis weight to form a smooth surface. On the other hand, it is speculated that the reduction in cushioning properties caused by the stretching of the wrinkles is offset by the lower hardness, so that many people can still feel "softness".

As described above, the tissue paper storage body of the present invention can ensure sufficient qualities of "moist feeling", "softness" and "smoothness" even with low basis weight and thin paper thickness by means of the bundle and the structure of the entire storage body.

The facial tissue of the present invention can be used not only for home use but also for business use (for example, in airport toilets and hospitals for use by an unspecified number of people).

1: Tissue storage body 2: Tissue bundle (tissue bundle) 2t: Tissue 2A: Folded inner surface 2B: Folded edge 2C: Fold line edge 10: Storage box 11: Top surface 12: Bottom surface 13: Long side surface 14: Short side surface 20: Hole for forming the outlet 20a: Outlet forming portion 20X: Outlet 31: Resin film 30: Slit F1～F3: Folding flap L1: Storage box width L2: Storage box depth L3: Storage box height

FIG. 1 is a perspective view of a tissue paper storage body. FIG. 2 is a perspective view for explaining the tissue paper storage body. FIG. 3 is a perspective view of the tissue paper storage body when in use. FIG. 4 is a view for explaining the structure of a tissue paper bundle.

Domestic storage information (please note the order of storage institution, date, and number) None

Overseas storage information (please note the storage country, institution, date, and number in order) None

1: Tissue storage box

10: Storage box

11: Top face

12: Bottom part

13: Long side face

14: Short side face

20: Remove the hole for forming the outlet

20a: Take out the outlet forming part

L1: Storage box width

L2: Storage box length and depth

L3: Storage box height

Claims (6)

A tissue storage body is provided, wherein a stack of two layers of tissue paper is stored in a storage box. The tissue paper contains a moisturizing liquid, the basis weight of one layer is 9.0 to 13.6 g/m ² , the thickness of two layers is 100 to 130 μm, and the total area of the tissue paper stored in the storage box is 9.0 to 10.8 m ² /storage box. The tissue storage container as claimed in claim 1, wherein the value of the total sheet area/moisturizing liquid amount is 400 to 550 m ² /g. The tissue storage box as claimed in claim 1, wherein the value of the moisturizing liquid volume/storage box volume is 0.015 to 0.030 g/cm ³ . The facial tissue storage body as claimed in claim 1, wherein the content of the moisturizing liquid in the facial tissue is 16 to 24 mass %. The tissue paper storage body as described in claim 1, wherein the Sdr of both sides of the tissue paper is 0.02 to 0.04. A tissue paper storage body as described in claim 1, wherein the Sq (mm) of both sides of the tissue paper is 0.015 to 0.025.