JP2019097765A - Toilet roll - Google Patents

Abstract

To provide a toilet roll in which the basis weight of toilet paper is equivalent to that of the conventional products, and a winding length per one roll is long, and which is excellent in tough and an appearance and is also excellent in carrying and space-saving properties in the storage.SOLUTION: A toilet roll is configured by winding toilet paper which is 2-ply laminated, and to which an embossment pattern is imparted in a roll shape. In the toilet roll, a winding length is 63 m or more and 128 m or less, a winding diameter is 103 mm or more and 151 mm or less, and an area rate of the embossment pattern is 25% or more and 80% or less.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a toilet roll in which toilet paper laminated in two plies and provided with an embossed pattern is wound into a roll.

  The toilet rolls are mainly packaged and marketed as one set of 4 rolls or 12 rolls. Because packaged toilet rolls are bulky, the number of toilet rolls that can be carried at the time of purchase is limited, and because of such limitations, there is also a limit to the amount that can be purchased at one time. There are also cases where toilet rolls are stored at home, at work, in public facilities, etc., but a large storage space can not always be secured.

Under these circumstances, toilet rolls have been proposed in which the basis weight per sheet of toilet paper is reduced to 14 g / m ² or less and the roll length per roll is increased (for example, Patent Documents 1 and 2) See) Others, toilet rolls with longer roll length have been developed while improving the texture and feeling of use by making the basis weight per toilet paper greater than 13 g / m ² (for example, Patent Documents 3 and 4) reference). Moreover, the toilet roll which improved the winding density and winding hardness is developed (for example, refer patent document 5, 6).

Japanese Patent Application Publication No. 2006-087703 JP, 2013-208297, A JP, 2014-188342, A JP, 2014-233363, A JP, 2016-198409, A JP, 2016-202855, A

  However, generally, when the basis weight of the toilet paper is lowered, the strength is lowered, and the feeling in use and the bulkiness are also lowered. On the other hand, if the treatment is weakened for the purpose of making the toilet paper bulky in order to compensate for these problems, there is a problem that the roll diameter becomes large and it becomes difficult to fit in the toilet paper holder or the smoothness is inferior.

  In addition, it is necessary to increase the roll density in order to prevent the winding diameter from becoming large while not increasing the winding length of the toilet roll and to prevent the attachment to the toilet paper holder. Here, since the emboss provided on the toilet paper affects the feel and the cosmetic property at the time of use, when the roll density is increased, an excessive pressure is particularly added to the internally wound toilet paper, and the emboss provided on the internally wound toilet paper There is a problem that the feeling of crushing and the touch and the cosmetic property at the time of use decrease. Further, in the above-mentioned prior art documents, the embossed pattern is not considered in detail, and the embossing may increase the difference between the front and back, which may make the touch feeling undesirable.

  Therefore, in the present invention, the basis weight of the toilet paper is equivalent to that of the conventional product, the winding length per roll is long, the feel and the cosmetic property at the time of use are good, and the portability and the space saving property at the time of storage are excellent. The purpose is to provide a toilet roll.

  The inventors of the present invention conducted intensive studies to solve the above problems. As a result, in the toilet roll in which the emboss pattern is given to the toilet paper, by adjusting the area ratio of the emboss pattern to a predetermined range, the touch feeling and the cosmetic property at the time of use are well maintained, and the roll length of the toilet roll is long. However, the inventors have found that it is possible to prevent the winding diameter from becoming large, and the present invention has been completed. Specifically, the present invention provides the following.

  (1) A first aspect of the present invention is a toilet roll obtained by winding toilet paper laminated in two plies and having an embossed pattern in a roll shape, wherein the winding length is 63 m or more and 128 m or less, and the winding diameter is It is a toilet roll which is 103 mm or more and 151 mm or less, and an area ratio of an embossed pattern is 25% or more and 80% or less.

  (2) A second aspect of the present invention is the toilet roll according to (1), wherein the line connecting the center of gravity of the embossed pattern in the flow direction and the width direction is substantially linear, and the adjacent ones are adjacent It is characterized in that the separation distance in the width direction of the emboss pattern is larger than the separation distance in the flow direction.

  (3) A third aspect of the present invention is the toilet roll according to (2), wherein the inclination of the line connecting the center of gravity of the embossed pattern in the flow direction to the line parallel to the flow direction is 0 ° or more. Or less.

  (4) A fourth aspect of the present invention is the toilet roll according to (2) or (3), comprising an auxiliary embossing pattern between the embossing patterns adjacent in the width direction, wherein the embossing pattern is And the auxiliary embossing pattern to form a substantially comma shape or a substantially reverse comma shape.

  (5) A fifth aspect of the present invention is the toilet roll according to any one of (1) to (4), wherein the depth of the embossed pattern is 0.01 mm or more and 0.34 mm or less It is a feature.

  According to the present invention, the basis weight of the toilet paper is maintained equivalent to that of the conventional product, the winding length per roll is long, the feel and the cosmetic property at the time of use are good, the portability and the space saving at the storage time An excellent toilet roll can be provided.

It is a perspective view which shows the external appearance of the toilet roll of this invention. It is a figure which shows the picked-up image of the embossing pattern by the side of roll surface. It is a figure which shows the aspect of an embossing pattern. It is a figure which shows the aspect of an embossing pattern. It is a figure which shows the aspect of an embossing pattern. It is a figure which shows the measuring method of the depth of an embossing pattern. It is a figure which shows an example of a roll winding processing machine. It is a figure which shows the picked-up image of the inferior goods which the inner winding side of the roll protruded in the axial direction.

  Hereinafter, embodiments of the present invention will be described in detail, but the following embodiments are presented for the purpose of illustration, and the present invention is not limited to the embodiments shown below.

<Toilet roll>
FIG. 1 is a perspective view showing the appearance of the toilet roll of the present invention. The toilet roll 1 of the present invention is a toilet roll 1 in which the toilet paper 1x which is laminated in two plies and to which the embossed pattern 2 is applied is wound in a roll, and has a winding length (winding length) of 63 m to 128 m. Hereinafter, the winding diameter DR (roll outer diameter) is 103 mm or more and 151 mm or less, and the area ratio of the embossed pattern 2 is 25% or more and 80% or less.

  Further, among the surfaces of the toilet paper 1x, the surface directed to the roll outer side is referred to as the roll surface 1a (the front surface of the toilet paper 1x), and the surface directed to the center of the roll is referred to as the roll back surface 1b (the back surface of the toilet paper 1x) . Further, the flow direction MD of the toilet roll 1 is a direction in which the toilet paper 1x stacked in two plies is wound in a roll shape, and the width direction W of the toilet roll 1 is a direction orthogonal to the flow direction MD. .

[Length]
When the winding length of the toilet roll 1 is 63 m or more and 128 m or less, the frequency of replacement of the toilet roll 1 can be reduced, space saving can be achieved, and the winding diameter DR is maintained in an appropriate range. The roll 1 is fully accommodated in the toilet paper holder. The winding length is preferably 68 m or more and 105 m or less, and more preferably 75 m or more and 93 m or less.

[Winding diameter]
When the winding diameter DR of the toilet roll 1 is 103 mm or more and 151 mm or less, the toilet roll 1 is sufficiently accommodated in the toilet paper holder while maintaining the winding length of the toilet roll 1 in a suitable range. The winding diameter DR is preferably 112 mm or more and 140 mm or less, and more preferably 115 mm or more and 127 mm or less.

Roll softness
When the softness of the toilet roll 1 having a long roll length is evaluated as in the present invention, the softness when the roll is held can be evaluated by evaluating the roll softness described below.

  The roll softness of the toilet roll 1 is measured as follows using a compression tester (Handy compression tester KES-G5 manufactured by Kato Tech Co., Ltd.). The direction parallel to the axial center of the toilet roll 1 is taken as the height direction, and the direction perpendicular to the tangent of the circumference of the toilet roll 1 and the axial center is taken as the radial direction.

  First, an acrylic pipe is inserted into the core of the toilet roll 1. The wall thickness of the acrylic pipe is 2 mm. The length of the acrylic pipe is 10 mm longer than the roll width of the toilet roll 1 (when the roll width of the toilet roll 1 is 114 mm, the length of the acrylic pipe is 124 mm). The outer diameter of the acrylic pipe is slightly smaller than the inner diameter of the core of the toilet roll 1, and the toilet roll 1 moves by its own weight when the axis of the toilet roll 1 is placed vertically after inserting the acrylic pipe. There is no size. If it is difficult to insert the acrylic pipe into the core and the outer diameter of the acrylic pipe is slightly reduced, the thickness may be slightly reduced with a waterproof paper or the like. The mass of the acrylic pipe is about 31 g when the length is 125 mm and the outer diameter is 38 mm.

Next, the toilet roll 1 is placed sideways on a rigid table so that the axis is horizontal. Then, the compression element (contact area: 2.0 cm ² ) of the above-mentioned KES-G 5 is pushed into the central part in the height direction of the toilet roll 1 from above in the radial direction at a speed of 10 mm / min. Let T0 be the indentation depth when the pressure at which the compression element presses the roll be 5 gf / cm ² , Tm be the indentation depth when the pressure is 150 gf / cm ² , and (Tm-T0) be the roll softness. The measurement is performed five times and the measurement results are averaged. In addition, the position of the height direction at the time of pushing the said compressor into the toilet roll 1 does not need to be a center part of the height direction except the both ends of the height direction. In the measurement of the roll softness of the toilet roll 1 of the present invention, the above-mentioned compressor is pressed into the vicinity of the middle between the center and the end in the height direction of the toilet roll 1 to measure.

  The roll softness of the toilet roll 1 of the present invention is preferably 0.1 mm or more and 1.6 mm or less, more preferably 0.3 mm or more and 1.3 mm or less, and more preferably 0.5 mm or more and 1.0 mm or less It is further preferred that As a method of adjusting the roll softness of the toilet roll 1 to the above range, there is a method of adjusting the winding strength of the roll with a roll winder (particularly surface type) while adjusting the basis weight and the paper thickness to a predetermined range.

[Rolling density]
In the present invention, the winding density of the toilet roll 1 is preferably 1.2 m / cm ² or more and 2.2 m / cm ² or less. Here, if the roll is wound too hard, excessive pressure is applied to the internally wound toilet paper 1x, the emboss provided on the internally wound toilet paper 1x is crushed, and the feel and the cosmetic property at the time of use are reduced. On the other hand, if the roll is too weakly wound, the emboss can not be crushed, but the winding diameter becomes large, making it difficult to mount the toilet roll 1 on the toilet paper holder, or the winding force of the inner winding becomes too weak. As shown in the photographed image of FIG. 8, the inner winding side of the roll pops out in the axial direction to cause a defective product. As such, in the present specification, the winding density is defined as a factor for expressing the winding strength of the roll.

  The winding density is represented by (winding length × number of plies) / (cross section of roll). The cross-sectional area of the roll is represented by {cross-sectional area of roll outer diameter (winding diameter DR) portion}-(cross-sectional area of core (paper tube) outer diameter portion). The core outer diameter DI is the diameter of the central hole of the roll.

For example, in the case of winding length 75 m, 2 ply, winding diameter 117 mm, core outer diameter 39 mm, winding density = (75 m × 2) 巻 {3.14 × (117 mm ÷ 2 ÷ 10) ² −3.14 × (39 mm) ÷ 2 ÷ 10) ² } = 1.57 m / cm ² . When the toilet roll 1 has no core, the diameter of the central hole is taken as the core outer diameter.

By the winding density being 1.2 m / cm ² or more and 2.2 m / cm ² or less, the winding diameter DR is positioned within an appropriate range, and the toilet roll 1 can be easily accommodated in the toilet paper holder etc. The winding force of the winding is appropriate, the inner winding side of the roll pops out in the axial direction (the shape retention of the roll is poor), there is no defect, and the softness of the sheet is suitably maintained, The emboss provided on the toilet paper 1x is not broken, and the feel and the cosmetic property at the time of use are maintained. The winding density is more preferably 1.3 m / cm ² or more and 1.9 m / cm ² or less, and still more preferably 1.4 m / cm ² or more and 1.7 m / cm ² or less.

[Basic weight]
The basis weight per one ply of the toilet paper 1x is preferably 11.0 g / m ² or more and 19.0 g / m ² or less, and the paper thickness at this time is 0.45 mm / 10 ply or more and 1.20 mm / 10 It is preferably less than the ply. When the basis weight and the paper thickness are in the above ranges, the winding length, the winding diameter DR, and the winding density can be easily adjusted to the above ranges. As a method of adjusting the basis weight per one ply of toilet paper 1x and the paper thickness to the above-mentioned range, there can be mentioned a method of specifying the paper thickness, specific volume and emboss conditions of the base paper web.

Since the basis weight and the paper thickness per one ply of the toilet paper 1x are within the above ranges, the strength and the feeling of use (bulk height) of the toilet paper 1x are suitably maintained, and the roll of the toilet roll 1 is The diameter DR is also maintained in an appropriate range to be easily accommodated in the toilet paper holder. The basis weight per ply toilet paper 1x is more preferably 13.1 g / ^{m 2} or more 17.0 g / ^{m 2} or less, 14.1 g / ^{m 2} or more 16.0 g / ^{m 2} that less is Is more preferred. The paper thickness of the toilet paper 1x is more preferably 0.57 mm / 10 plies or more and 1.05 mm / 10 plies or less, and still more preferably 0.65 mm / 10 plies or more and 0.90 mm / 10 plies or less.

[Emboss pattern]
The toilet roll 1 (toilet paper 1 x) of the present invention is embossed and has an embossed pattern 2. As embossing pattern 2 which toilet paper 1x of the present invention has, although both double embossing and single embossing can be adopted, a single embossing pattern is preferred. Double embossing generally makes the convexes of the embosss the inner surface into two plies, so the difference between the front and back of the embossing pattern is small, but since each sheet is embossed separately by one ply, it becomes complicated in terms of production. As shown in FIG. 7, the single embossing pattern is formed by pressing the embossing convex portion of the embossing roll 111 from only one side of the toilet paper 1x in which the sheets are laminated in two plies, and the embossing roll 111 of the toilet paper 1x is formed. Since the embossed pattern 2 (single embossed pattern) in which the concave and the convex appear on the back surface is formed, the difference between the front and back of the embossed pattern tends to increase generally, but the embossed pattern of the present application described later is used. This makes it possible to reduce the difference between the front and back of the embossed pattern even with single embossing. Embossing may be performed multiple times on the toilet paper 1x laminated in two plies. Further, even when any of single embossing and double embossing is provided, edge embossing may be further provided to prevent the ply peeling of the sheet. The material of the embossing roll 111 is preferably metal.

  FIG. 3 is a drawing showing an aspect of the embossed pattern 2. As shown in FIG. 3, the line connecting the center of gravity of the embossed pattern 2 in the flow direction MD and the width direction W is substantially linear, and the separation distance in the width direction W of the adjacent embossed patterns 2 is the flow direction MD. Greater than the separation distance at By forming the embossed pattern 2 in such a mode, as shown in FIG. 2, the appearance having a plurality of linear patterns along the flow direction MD can be obtained, and the appearance is excellent. In addition, when using the toilet roll 1, it is usual to pull and use the toilet paper 1x in the flow direction MD while holding it by hand, so the separation distance in the width direction W of the adjacent embossing pattern 2 is the flow direction MD By making it larger than the separation distance in the above, the feel on the touch and the fit to the fingertip are improved, and the tactile feeling at the time of use becomes good.

  The inclination of the line connecting the center of gravity of the embossed pattern 2 in the flow direction MD with respect to the line parallel to the flow direction MD is preferably 0 ° or more and 10 ° or less. FIG. 4 is a drawing showing an aspect of the embossed pattern 2 when the inclination of the line connecting the center of gravity of the embossed pattern 2 in the flow direction MD with respect to the line parallel to the flow direction MD is 13 °. Thus, when the embossed pattern 2 is formed such that the inclination of the line connecting the center of gravity of the embossed pattern 2 in the flow direction MD with respect to the line parallel to the flow direction MD is more than 10 °, the thickness of the toilet roll 1 Since the depressions and depressions of the emboss pattern 2 of the toilet paper 1x overlapped in the direction and the depressions and projections are difficult to overlap with each other, the embossment is easily crushed and the touch feeling and the cosmetic property at the time of use are impaired. In particular, when winding a long toilet roll as in the case of the toilet roll 1 of the present invention, since the tension of the toilet paper is processed in a strongly tensioned state, the emboss is extended and the cosmetic property of the emboss is further reduced. It's easy to do. Therefore, in order to make it easy to overlap the concave portions and the concave portions and the convex portions and the convex portions of the embossed pattern 2 of the overlapping toilet paper 1x with each other and to make the embossed pattern 2 difficult to be crushed, embossing on a line parallel to the flow direction MD The inclination of a line connecting the center of gravity of pattern 2 in the flow direction MD is preferably 0 ° or more and 10 ° or less, more preferably 0 ° or more and 5 ° or less, and preferably 0 ° or more and 2 ° or less More preferable. Further, from the viewpoint of making the emboss pattern 2 harder to crush, as shown in FIG. 3, the inclination of the line connecting the center of gravity of the emboss pattern 2 to the flow direction MD with respect to the line parallel to the flow direction MD is 0 °. In other words, the line connecting the center of gravity of the embossed pattern 2 in the flow direction MD is most preferably parallel to a line parallel to the flow direction MD.

  The inclination of a line connecting the center of gravity of the embossed pattern 2 in the flow direction MD with respect to a line parallel to the flow direction MD can be measured by the following method. First, the distance from any end in the width direction W to the closest embossed pattern 2 is measured at a position drawn 50 cm in the flow direction from the outermost end of the toilet roll 1. Next, from the end in the width direction W on the side where the above measurement is performed at a position drawn 50 cm further in the flow direction MD, the center of gravity of the embossed pattern 2 whose distance is measured is on the line connecting the flow direction MD. The distance to the embossed pattern 2 is measured. Thus, the distance from the embossed pattern 2 and one end in the width direction W is measured at two points on the line connecting the center of gravity of the embossed pattern 2 in the flow direction MD, and a large measured value of the two measured values is measured. The inclination of a line connecting the center of gravity of the embossed pattern 2 in the flow direction MD can be determined using a numerical value obtained by subtracting a small measured value from the distance and a distance (50 cm) parallel to the flow direction MD at two points.

(Area ratio and depth of embossed pattern)
In the toilet roll 1 of the present invention, the area ratio of the emboss pattern 2 (proportion of the portion having the emboss pattern 2 in the toilet paper 1x) is adjusted to be 25% or more and 80% or less. By adjusting the area ratio of the emboss pattern 2 to the above range, the difference between the front and back of the emboss pattern 2 can be appropriately maintained, and at the same time, the feel and the cosmetic property at the time of use can be well maintained. Here, the area ratio of the embossed pattern for toilet paper is usually 20% or less. By increasing the area ratio of the embossed pattern as in the present invention, the paper thickness can be reduced without calendering the base paper, so even a long toilet roll that does not reduce the basis weight is suitable. It can be adjusted to any winding diameter. The area ratio of the embossed pattern 2 is more preferably 35% or more and 70% or less, and still more preferably 45% or more and 60% or less.

  Moreover, in the toilet roll 1 of the present invention, the depth of the embossed pattern 2 is preferably 0.01 mm or more and 0.34 mm or less, more preferably 0.04 mm or more and 0.29 mm or less, and 0.09 mm More preferably, it is at least 0.25 mm. By adjusting the depth of the embossed pattern 2 in the above range, it is possible to more effectively maintain the difference between the front and back of the embossed pattern 2 and to maintain good touch feeling and cosmeticity at the time of use.

  The area ratio and depth of the emboss pattern 2 are determined by measuring the height difference of the emboss pattern 2 using a microscope. The above-mentioned numerical values of area ratio and depth are numerical values obtained by measuring only the embossing pattern 2 without reflecting the auxiliary embossing pattern 21 described later.

  As a microscope, the product name "One shot 3D measurement microscope VR-3100" made by KEYENCE can be used. Product name "VR-H1A" can be used as observation / measurement / image analysis software of the image of a microscope. Moreover, measurement conditions are measured on the conditions of magnification 12x and visual field area 24 mm x 18 mm. The measurement magnification and the visual field area may be appropriately changed according to the size of the embossed pattern 2 to be obtained. For measurement of the embossed pattern 2, the measurement surface is not the roll back surface 1b but the roll surface 1a, and the position corresponding to the winding length 10% of the toilet roll 1 from the outermost edge 1e of the toilet paper 1x of the toilet roll 1 , Select and measure the embossed pattern 2 continuous in the width direction W. In addition, the area ratio and depth of the embossing pattern 2 measure the toilet roll 1 as roll shape. Here, since the toilet roll 1 has a bulky shape, the focus of the microscope may be difficult. In this case, the stage on which the sample is placed may be removed, and the focus may be adjusted for measurement. When the above-described edge embossing is provided, the area to be measured is an area other than the edge embossing area.

  FIG. 6 (a) shows the height profile on the XY plane by the microscope, and it can be seen that the height of the surface of the toilet paper 1x is represented by shading. Under the conditions of profile measurement, a line segment (horizontal line) is drawn so as to straddle the emboss pattern 2, and as shown in FIG. 6 (b-1), continuous unevenness on the sample surface of the actual toilet paper 1x is represented (measurement) A cross-sectional curve is obtained, and the graph shown in FIG. 6 (b-1) shows the unevenness formed continuously in the width direction W of the toilet roll 1. Here, the (measurement) cross-sectional curve in FIG. 6 (b-1) is a (measurement) cross-sectional curve representing the unevenness of the surface of the toilet roll, but noise (fiber lumps are present on the surface of the toilet roll, fibers are These noise peaks are also included in the calculation of the height difference of unevenness and calculation of the area ratio shown below. There is a need. Therefore, the cross-sectional curve of FIG. 6 (b-2) obtained by smoothing the (measurement) cross-sectional curve of FIG. 6 (b-1) with the filter of the weighted average radio button set to ± 12 is obtained. The smoothing using the filter of the weighted average radio button can be automatically obtained by using the above analysis software. Then, in the graph shown in FIG. 6 (b-2), the average value of the maximum values of the convex portion of the graph and the vertical axis of the convex portion adjacent to the convex portion is calculated, and the convex portion and the convex The minimum value of the vertical axis in the concave portion sandwiched between the convex portion adjacent to the portion is determined. A value obtained by subtracting the minimum value from the average value of the maximum values obtained in this manner is taken as the depth of the embossed pattern 2. As shown in FIG. 6 (b-1), the same measurement is carried out at a total of three places (concave and convex portions not including the auxiliary emboss) continuous on the cross-sectional curve. can get). Thereafter, the toilet paper 1x is removed as it is for one roll of two plies, and the same measurement as described above is performed at the same position as the roll position measured at the first time. Repeat this work two more times, making a total of four measurements in the flow direction. Then, an average value of a total of 12 locations (three continuous locations in the width direction × 4 locations in the flow direction) is finally adopted as the depth of the embossed pattern 2. The pitch in the width direction on the profile (the distance between the convex portion and the convex portion adjacent to the convex portion) is preferably 1 mm or more and 12 mm or less, more preferably 2 mm or more and 9 mm or less, and 3 mm More preferably, it is 6 mm or less. By setting the pitch in the width direction in the above-mentioned range, it is possible to maintain good touch feeling and cosmeticity at the time of use.

  Next, a method of measuring the area ratio of the embossed pattern 2 will be described with reference to FIG. As shown in FIG. 6C, in the convex portion of the graph and the convex portion adjacent to the convex portion, a line A is drawn connecting the points having the maximum value of the vertical axis, and then, the convex portion; A line B perpendicular to the line A is drawn from the point indicating the minimum value of the vertical axis in the concave part sandwiched by the convex part adjacent to the convex part. Next, a line C parallel to the line A is drawn from the point indicating the minimum value of the vertical axis in the recess. Next, in the convex portion and the convex portion adjacent to the convex portion, a line D vertically connecting to the line C is drawn from the point having the maximum value of the vertical axis. Next, a line E parallel to the lines A and C is drawn from the center point of the line B. Thus, after drawing a plurality of lines, the area of the area surrounded by the line on the graph, the line B, and the line E, that is, the sum of the areas of F and G in FIG. The area of the region surrounded by the lines of the graph, the line D, and the line E, ie, the sum of the areas of H and I in FIG. The area of the portions of F and G is divided by the total area and the value multiplied by 100 is taken as the area ratio (%) of the embossed pattern 2. Therefore, in FIG. 6C, the numerical value calculated by the formula of (area of area F + area of G area) / (area of area F + area of area G + area of area H + area of both machines) × 100 is an embossed pattern It becomes an area ratio of 2. The same measurement is performed on a total of three places (concave and convex portions not including auxiliary embossing) continuous on the cross-sectional curve (at this point, three consecutive measurement results in the width direction are obtained). Thereafter, the toilet paper 1x is removed as it is for one roll of two plies, and the same measurement as described above is performed at the same position as the roll position measured at the first time. Repeat this work two more times, making a total of four measurements in the flow direction. Then, an average value of a total of 12 places (three places continuous in the width direction × 4 places in the flow direction) is finally adopted as the area ratio of the embossed pattern 2. In the case of winding the long toilet roll as in the present invention, since the sheet is processed in a strongly tensioned state, the emboss can be easily expanded in the flow direction, and the center of gravity of the embossed pattern 2 The lines connecting in the width direction W are substantially linear, and the distance between the adjacent embossing patterns 2 in the width direction W is larger than the distance in the flow direction MD, so the area ratio in the width direction is measured. Conventionally, the area ratio of the embossed pattern 2 has been obtained by image analysis or the like using the convex portion of the embossed pattern 2. In the present invention, it was found that there is a correlation between the area ratio of the projections of the embossing roll and the area ratio of the above measuring method, and the area ratio of the embossed pattern was measured by the above method.

  The shape of the embossed pattern 2 is not particularly limited, such as rectangular, square, round, and oval. The winding diameter DR and the winding density can be adjusted by appropriately adjusting the depth of the embossed pattern 2 and the area ratio (number of pieces) of the embossed pattern 2 described above.

  By the way, as described above, when the embossed pattern 2 is formed such that the inclination of the line connecting the center of gravity of the embossed pattern 2 in the flow direction MD with respect to the line parallel to the flow direction MD is 0 °, the toilet In the manufacturing process of the roll 1, the convex portion of the embossing roll 111 will be kept in contact with the specific position of the opposing rubber roll 112, the deterioration of the position of the rubber roll 112 progresses, and the replacement frequency of the rubber roll 112 becomes high. Burden may be incurred. Therefore, it is preferable to have the auxiliary embossing pattern 21 between the embossing patterns 2 adjacent in the width direction W, and to form a substantially comma shape or a substantially reverse comma shape by the embossing pattern 2 and the auxiliary embossing pattern 21. In the present specification, when the toilet roll 1 is viewed in the flow direction, the auxiliary embossing pattern is defined as an embossing in which the number of concave portions in the embossed portion is smaller than that in the non-embossed portion. The auxiliary embossing pattern 21 is preferably connected to the embossing pattern 2 in the width direction as shown in FIG. FIG. 5 shows an aspect in which the embossing pattern 2 and the auxiliary embossing pattern 21 form a substantially reverse comma shape. By providing the auxiliary embossing pattern 21 in this manner, the convex portion of the emboss roll 111 contacts the rubber roll 112 uniformly, and the deterioration rate of the rubber roll 112 can be reduced. The thickness of the auxiliary embossing pattern 21 is preferably 0.05 mm or more and 2.0 mm or less, more preferably 0.1 mm or more and 1.5 mm or less, and 0.2 mm or more and 1.0 mm or less. Is more preferred. Further, the depth of the auxiliary embossing pattern 21 is preferably 0.01 mm or more and 0.32 mm or less, more preferably 0.04 mm or more and 0.27 mm or less, and 0.08 mm or more and 0.24 mm or less. Is more preferred. The auxiliary embossing pattern 21 can be formed by appropriately adjusting the unevenness of the embossing roll 111.

  FIG. 7 shows an example of a roll winding machine 110. The two original rolls 12 are set in a roll winding machine 110, laminated in two plies such that the Yankee face is on the outside, and then single embossed by an embossing unit (emboss roll 111), and then wound. It is wound by the mechanism 113 onto the wide base paper roll 13 of the above-mentioned winding diameter DR. Thereafter, the base paper roll 13 is cut into a predetermined width (114 mm or the like) to form the toilet roll 1. The original fabric roll 12 may be subjected to calendering, but in the present invention, since the paper thickness and specific volume are lowered by embossing, the need for calendering is low, and calendering is not performed. Is preferable from the viewpoint of improving the productivity.

  The roll winding machine 110 can be roughly classified into two types, a surface method and a center method. The surface method is a method in which a roll to be wound is supported by another drive roll from the outside, and the wound toilet roll 1 can be easily controlled in winding diameter, and the production speed becomes higher. The center method is a method of winding by driving a shaft that passes through the center of the winding roll, and the wound toilet roll 1 becomes a relatively soft product and is suitable for delicate embossed products. In the present invention, although any method can be used for winding, a surface method is preferred. According to the surface method, the winding diameter DR of the toilet roll 1 and the roll softness can be adjusted relatively easily by the strength with which the toilet roll 1 is wound.

  The depth of the emboss pattern 2 can be controlled by appropriately adjusting the nip width of the rubber roll 112 (see FIG. 7) facing the emboss roll 111. The nip width varies depending on the characteristics of the roll, but is preferably 20 mm to 50 mm, more preferably 25 mm to 45 mm, and still more preferably 30 mm to 40 mm. By setting the nip width within the above range, the difference between the front and back of the embossed pattern 2 is maintained properly, the paper thickness is suitably maintained, and the roll diameter DR becomes appropriate, and the sheet becomes soft. Is also suitably maintained. The nip width can be measured using carbon paper. As a measurement method, first, the nip of the embossing roll 111 is released, and carbon paper and general copy paper are stacked and set. Next, a nip is applied to the embossing roll 111. After that, the nip is released and carbon paper and copy paper are removed. Since the color of carbon paper in the portion where the nip was applied by the embossing roll 111 is transferred to the copy sheet, the nip width can be measured. The material of the embossing roll 111 is preferably metal.

  The depth of the embossed pattern 2 can be adjusted by narrowing the nip width if the unevenness of the embossing roll 111 is deep and widening the nip width if the unevenness of the embossing roll 111 is shallow. In addition, the winding strength of the roll can be adjusted so as to secure the depth of the embossed pattern 2. For example, when the depth of the emboss pattern 2 is increased, the emboss pattern 2 is easily crushed when the roll is wound. Therefore, the depth of the emboss pattern 2 can be adjusted by weakening the roll winding strength.

  At the same time, printing, embossing, perforation processing, tail sealing, and cutting of a predetermined width (114 mm or the like) can be performed by the roll winding processing machine 110, and the toilet roll 1 can be manufactured. Furthermore, after that, film packaging processing can be performed to produce a package of the toilet roll 1.

[Roll density, roll mass]
The roll mass is the mass of the toilet roll 1 per 114 mm of roll width. The roll volume is represented by [{cross-sectional area of roll outer diameter (winding diameter DR) portion}-(cross-sectional area of core outer diameter portion)] × roll width (converted to about 114 mm). For example, when the roll mass per 114 mm of roll width is 327 g, the winding diameter is 122 mm, and the outer diameter of the core is 39 mm, the roll density = 327 g ÷ [{3.14 × (122 mm ÷ 2 ÷ 10) ² −3.14 × ( It will be set to 39 mm ÷ 2 ÷ 10) ² } x (114 mm ÷ 10)] = 0.27 g / cm ³ . When the toilet roll 1 has no core, the diameter of the central hole is taken as the core outer diameter.

The roll density of the toilet roll 1 is preferably 0.18 g / cm ³ or more and 0.35 g / cm ³ or less, more preferably 0.20 g / cm ³ or more and 0.31 g / cm ³ or less, and 0 it is further preferred .22g / cm ³ or more 0.27 g / cm ³ or less. By setting the roll density of the toilet roll 1 within the above range, the emboss pattern 2 of the internally wound toilet paper 1x will not be crushed, and the feel and cosmeticity of the toilet paper 1x at the time of use are good. Maintained. In addition, the softness of the roll is well maintained, and the winding diameter DR is maintained in an appropriate range to be easily accommodated in the toilet paper holder, and no defective product in which the inner winding side of the roll pops out in the axial direction is generated.

  Here, the softness of the roll is the feel when holding the toilet roll 1 at the store, and does not directly reflect the softness of the sheet. However, since the softness of the sheet can not be confirmed by unrolling the roll at the store, if the roll is hard even if the sheet itself is soft, the sheet is also considered hard, and the purchase can not be promoted. For this reason, the promotion effect can be enhanced by improving the softness of the roll.

  In the toilet roll 1 of the present invention, the roll mass per roll width 114 mm is preferably 180 g or more and 480 g or less, more preferably 225 g or more and 400 g or less, with the mass of the core (paper tube) removed. Preferably, it is more preferably 250 g or more and 340 g or less. When the roll mass is within the above range, the winding density of the toilet roll 1 is maintained within the preferable range, the softness of the toilet paper 1 x becomes good, and the emboss pattern 2 is crushed. The feel and the cosmetic property of the toilet paper 1x are well maintained. When the roll width is other than 114 mm, the roll mass is converted to 114 mm by proportional calculation.

[Core (paper tube) outer diameter]
The core outer diameter of the core of the toilet roll 1 of the present invention is preferably 25 mm or more and 48 mm or less, more preferably 35 mm or more and 46 mm or less, and preferably 37 mm or more and 43 mm or less More preferable. When the core outer diameter is in the above range, the toilet roll 1 can be easily accommodated in the toilet paper holder while suitably maintaining the winding density and the winding diameter of the toilet roll 1. The mass of the core of the toilet roll 1 is preferably 3.1 g or more and 6.9 g or less, more preferably 3.9 g or more and 5.9 g or less, and preferably 4.4 g or more and 5.2 g or less Is more preferred. By setting the core mass within the above-mentioned numerical range, the core strength and the core cost suitable for a long toilet paper as in the present invention can be improved. The mass of the core is, in the same way as the roll mass, the mass converted to a roll width of 114 mm.

[Specific volume]
The specific volume of the toilet paper 1x is preferably 3.0 cm ³ / g or more and 7.5 cm ³ / g or less. When the specific volume of the toilet paper 1x is in the above range, the softness of the sheet becomes good, the bulk (bulk height) is suitably maintained, and the water absorbability is well maintained. The winding diameter DR does not become too large. The specific volume is more preferably 3.3 cm ³ / g or more 6.7cm is ³ / g or less, and further preferably 3.6 cm ³ / g or more 6.4 cm ³ / g or less.

[DMDT, DCDT]
The tensile strength in the longitudinal direction during drying based on JIS P 8113 of the toilet paper 1x (sheet laminated to 2 ply) is DMDT (Dry Machine Direction Tensile strength), and the tensile strength in the transverse direction during drying is DCDT (Dry Cross) In the case of Direction Tensile strength, DMDT is preferably 2.5 N / 25 mm or more and 7.5 N / 25 mm or less, more preferably 2.9 N / 25 mm or more and 6.0 N / 25 mm or less, 3.3 N It is further more preferable that it is / 25 mm or more and 4.5 N / 25 mm or less. In addition, DCDT is preferably 0.70 N / 25 mm or more and 2.3 N / 25 mm or less, more preferably 0.80 N / 25 mm or more and 1.9 N / 25 mm or less, and 1.0 N / 25 mm or more. More preferably, it is 5 N / 25 mm or less. By making DMDT and DCDT be in the range of the said value, while becoming difficult to tear a sheet | seat, the softness of a sheet | seat is also maintained suitably. In addition, the measurement of tensile strength is performed on the conditions of 300 mm / min of tensile speeds. Also, the tensile strength can be adjusted by a known method.

  In the above description, the machine direction of the toilet paper 1x is referred to as "longitudinal direction", and the width direction is referred to as "lateral direction".

[Water absorption]
The water absorbency of the toilet paper 1x (sheet laminated to two plies) based on the old JIS S 3104 is preferably 9.0 seconds or less, more preferably 6.0 seconds or less, and 3.0 seconds or less It is further preferred that The water absorption degree is preferably a short time, and by being within the range of the above time, the water absorption is well maintained. In addition, when dripping water, it drips on the surface side of toilet paper 1x.

[Easy to loosen]
The ease of loosening based on JIS P 4501 when the toilet paper 1x is peeled into one sheet is preferably 6 seconds to 60 seconds, more preferably 10 seconds to 50 seconds, and more preferably 13 seconds to 40 seconds. More preferably, it is less than or equal to seconds. When the ease of loosening is within the above-mentioned time range, the water-dissolving ability in the toilet is well maintained, and the water resistance when the toilet paper 1x in use in the warm water-washed toilet seat becomes wet also becomes good.

<Toilet paper>
The toilet paper 1x may be made of 100% by mass of wood pulp, and may include waste paper pulp, non-wood pulp and deinked pulp. In order to obtain the target quality, the content of NBKP (softwood bleached kraft pulp) is preferably 0% by mass to 30% by mass, and more preferably 0% by mass to 20% by mass, More preferably, it is 0% by mass or more and 10% by mass or less. Moreover, it is preferable that the content rate of LBKP (hard leaf bleached kraft pulp) is 30 to 90 mass%, It is more preferable that it is 40 to 80 mass%, 50 to 70 mass% It is further preferred that

  Moreover, it is preferable that the content rate of the waste paper pulp derived from liquid beverages, such as a milk carton (milk pack), is more than 0 mass% and 60 mass% or less, and more preferably 10 mass% or more and 50 mass% or less. The content of the kraft pulp is preferably 40% by mass to 100% by mass, and more preferably 50% by mass to 90% by mass. More preferably, the content is 55% by mass to 80% by mass.

  Waste paper pulp derived from liquid beverages such as milk cartons (milk cartons) is mainly softwood pulp, and has the advantage that it is easy to improve the strength of toilet paper 1x, but the variation in quality is large and the content ratio is too high And product quality may be affected. By setting the content of the recycled paper pulp derived from a liquid beverage such as a milk carton within the above range, the strength of the toilet paper 1x can be effectively improved while suppressing the variation in quality.

  In addition, as said LBKP, the pulp formed from the wood species of Eucalyptus genus Eucalyptus represented by Eucalyptus grandis and Eucalyptus globulus is preferable.

  In the present invention, deinked pulp derived from newspaper, magazine waste paper and the like can be blended in an amount of 25 parts by mass or less with respect to 100 parts by mass of the pulp from the above-mentioned NBKP, LBKP, and milk carton. The content ratio of deinked pulp in the toilet paper 1x (sheet) is 25 parts by mass / (100 parts by mass + 25 parts by mass) × 100 = 20% by mass when 25 parts by mass of deinked pulp is blended. . The content of deinked pulp is preferably 0% by mass to 20% by mass, more preferably 0% by mass to 10% by mass, still more preferably 0% by mass to 5% by mass And 0% by mass is most preferable. Since deinked pulp is also waste paper, when it is blended into the pulp raw material, the variation in quality of the toilet paper 1x becomes large. The deinked pulp usually contains a fluorescent dye, and when the content exceeds 20% by mass, the toilet paper 1x may contain a large amount of the fluorescent dye. Therefore, the content of deinked pulp is preferably 20% by mass or less.

  When the deinked pulp contains a fluorescent dye, the difference Δ between the whiteness value of the toilet paper 1x (sheet) under the UV-in conditions and the whiteness value under the UV-cut conditions becomes large. Here, UV-in is the whiteness according to ISO 2470 when a C light source (including ultraviolet light) defined by CIE (International Commission on Illumination) is irradiated on the surface side of the toilet paper 1x. The UV-cut is the whiteness according to ISO 2470 when the C light source is irradiated to the surface side of the toilet paper 1x through a filter that cuts ultraviolet light having a wavelength of 420 nm or less. The difference Δ = (whiteness UV-in)-(whiteness UV-cut).

  The difference Δ is preferably 0.0 or more and 2.5 or less, more preferably 0.0 or more and 1.5 or less, and 0.0 or more and 1.0 or less Is more preferable, and it is most preferable that it is 0.0 or more and 0.5 or less. The whiteness can be measured using a high-speed spectrophotometer CMS-35SPX manufactured by Murakami Color Research Laboratory, Ltd. in accordance with ISO 2470.

  In addition, in order to ensure appropriate strength in the toilet paper 1x, strength adjustment can be performed by blending raw materials by a usual means and performing a beating process of pulp fibers. As the beating for obtaining the target quality, the difference between freeness before and after beating is 0 mL or more and 150 mL or less, more preferably Canadian standard freeness measured according to JIS P 8121 with respect to commercially available virgin pulp. The beating process to reduce to 10 mL or more and 100 mL or less, more preferably 20 mL or more and 70 mL or less can be mentioned.

  When using virgin materials for the stock, the toilet paper 1x can be made by blending softwood kraft pulp and hardwood kraft pulp having a certain range of fiber length and fiber roughness in a specific range. Additives to the stock, depending on the required quality of the final product, softener including debonder softener, bulking agent, dye, dispersant, dry strength agent, drainage improver, pitch control agent, absorbency An enhancer etc. can be used. It is preferred not to use a wet strength agent. When wastepaper raw material is used for the stock of toilet paper 1x, the same processing as in the case of the above-mentioned virgin type is performed.

[Method of manufacturing toilet paper]
The toilet paper 1x can be manufactured, for example, in the following order: (1) papermaking and creping; (2) embossing and roll winding. Among these, since (2) was already demonstrated, it is abbreviate | omitted.

(Papermaking and creping)
First, the web is made from the stock on the wire part of a known paper machine and transferred to the felt of the press part. Examples of the method of the wire part include a circular net type, a long net (Ford Linear) type, a suction breast type, a short net type, a twin wire type, and a crescent former type.

  Then, the web is continuously dewatered by mechanically compressing it with a suction pressure roll or a pressure roll or a press roll without suction, or adopting a dewatering method such as through-air drying with hot air. Suction pressure rolls or pressure rolls without suction are also used as a means to move the web from the press part to the Yankee dryer.

  The web transferred to the Yankee dryer is dried by a Yankee dryer and a Yankee dryer hood, then creped by a creping doctor and taken up by a reel part.

  Creping (corrugating the so-called crepe) is the mechanical compression of the paper in the machine direction (sheet travel direction on the paper machine). Then, during production of the toilet paper 1x web, the creping doctor peels off the web on the Yankee dryer and takes up the reel part, but the speed difference between the Yankee dryer and the reel part (speed of reel part ≦ Yankee dryer A crepe is formed by the creping doctor according to the speed).

The quality required for the toilet paper 1x, that is, bulk (bulk feeling), softness, water absorbency, surface smoothness, aesthetic appearance (crepe shape), and the like depend on the above-mentioned speed difference. The basis weight of the web on the reel after creping is approximately 12 g / m ² or more and 21 g / m ² or less, depending on the conditions such as the speed difference and the like, and heavier than the basis weight of the web on the Yankee dryer before creping. The above-mentioned basis weight is preferably 14 g / m ² or more and 19 g / m ² or less, more preferably 15 g / m ² or more and 18 g / m ² or less. If the above range is exceeded, the strength may be high and the paper may be stiff or the roll softness may be too large, and if it is less than the above range, the strength may be weak and it may be easily broken, or the feeling in use and bulkiness may be high. It may be inferior.

Here, the crepe ratio based on the speed difference between the Yankee dryer and the reel is defined by the following equation.
Crepe rate (%) = 100 × (Yankee dryer speed (m / min)-reel speed (m / min)) / reel speed (m / min)

  The quality and operability are mostly determined by the creping conditions, and the operating conditions that optimize the creping conditions become important matters for those skilled in the art. In the present invention, the crepe ratio at the time of producing the toilet paper 1x is preferably 10% to 50%, more preferably 15% to 40%, and further preferably 20% to 35%. preferable.

The thickness of the toilet paper 1x before embossing is preferably 0.50 mm / 10 plies to 1.40 mm / 10 plies, more preferably 0.62 mm / 10 plies to 1.25 mm / 10 plies, more preferably 0. 70 mm / 10 ply or more and 1.10 mm / 10 ply or less. Also, preferably the specific volume of the toilet paper 1x in bulk roll 12 before embossing is 3.5 cm ³ / g or more 8.0 cm ³ / g or less, more preferably 3.8 cm ³ / g or more 7.2cm ³ / g or less, more preferably 4.1 cm ³ / g or more and 6.9 cm ³ / g or less. The paper thickness of the toilet paper 1x before embossing is the paper thickness of the raw fabric roll 12. The paper thickness and specific volume before embossing are higher than the paper thickness and specific volume of the toilet roll. As described above, the embossed pattern 2 used in the present invention is suitable for a long toilet roll because the paper thickness and specific volume can be reduced by embossing.

  For example, after setting and laminating two original fabric rolls into two plies by the roll winding processing machine 110 of FIG. 7, embossing is performed to obtain the toilet roll 1. In the winding density and the roll softness, when winding on the wide base paper roll 13 by the winding mechanism 113 in the roll winding processing machine 110 of FIG. The pressing force of the rider roll 114 can be adjusted by setting in a predetermined range.

  It goes without saying that the present invention is not limited to the embodiments described above, but extends to various modifications and equivalents included in the spirit and scope of the present invention.

  The content ratio of the pulp composition is (mass%) NBKP 5%, LBKP 60%, and the waste paper pulp derived from milk carton is 35%, deinked pulp is not contained, and the apparatus shown in FIG. The following toilet paper and toilet roll were produced. In addition, about the comparative example 7, it manufactured, without providing an embossing pattern.

  The following evaluations were made.

  Maximum tensile load until breakage is N / 25 mm for toilet paper (laminated sheet made into 2 plies) based on JIS T 8113 and longitudinal tensile strength DMDT during drying and transverse tensile strength during drying DCDT: It measured by. The measurement of the tensile strength was performed under the conditions of a tensile speed of 300 mm / min.

  Basis weight: Measured according to JIS P8124 and converted to one ply.

  Paper thickness: Measured using a thickness gauge (dial thickness gauge “PEACOCK” manufactured by Ozaki Mfg. Co., Ltd.). The measurement conditions were a measurement load of 3.7 kPa and a diameter of a probe of 30 mm, and the sample was placed between the probe and the measurement table, and the gauge was read when the probe was lowered at a speed of 1 mm or less per second. The measurement was repeated ten times using a stack of 10 ply sheets of toilet paper (five sheets of one set of two ply toilet paper sheets) as a sample, and the measurement results were averaged. The paper thickness can be measured in the same manner for the raw web.

Specific Volume: The paper thickness per ply was divided by the basis weight per ply and expressed in volume cm ³ per unit g.

  Winding diameter DR of the roll, core outer diameter DI: Measured using a diamond meter rule manufactured by Muratec KDS Co., Ltd. The measurement measured 10 rolls and averaged the measurement results.

  The winding density of the roll, the inclination of the line connecting the center of gravity of the embossed pattern in the flow direction to the line parallel to the flow direction, the area ratio and depth of the embossed pattern, and the roll density were measured by the method described above. In addition, the winding density of a roll measured 10 rolls used for the measurement of winding diameter DR of a roll, and averaged the measurement result. In the table, when the depth of the embossed pattern is less than 0.01 mm, it is indicated by a hyphen.

  Winding length: The length of 10 sheets was measured for the sheet between perforations of the toilet roll. Thereafter, the number of sheets of the roll was measured, and the winding length was obtained by proportional calculation from the length of 10 sheets and the number of sheets. For example, in the case where the length of 10 sheets is 2.275 m and the number of sheets is 330, 2.275 m × (330/10) = 75 m. In addition, when there was no perforation, winding length was calculated | required by measuring.

  Roll mass: The roll mass was measured using an electronic balance. First, the roll mass including the core was measured, and then the mass of the core was measured. The mass of the core was subtracted from the mass of the roll containing the core to obtain the mass of the roll. Roll mass measured ten rolls and averaged the measurement result. In addition, when roll width was different from 114 mm, roll width was converted into 114 mm and roll mass was calculated | required. For example, when the roll width is 105 mm, a mass obtained by multiplying the roll mass by a coefficient (114/105) is defined as a roll mass per 114 mm.

Sensory evaluation was performed by 20 monitors. The evaluation criteria were based on a perfect score of 5 points. It is good if the evaluation standard is 3 points or more.
In addition, each measurement was performed after hold | maintaining in an equilibrium state on temperature and humidity conditions (23 +/- 1 degreeC, 50 +/- 2% RH) prescribed | regulated to JISP8111.

  The obtained results are shown in Tables 1 and 2. In Table 2, when the depth of the embossed pattern is less than 0.01 mm, it is a hyphen.

  As is apparent from Tables 1 and 2, in the case of each embodiment in which the winding length of the toilet roll, the winding diameter, and the area ratio of the embossed pattern are within the predetermined range, the touch feeling and beauty during use without reducing the basis weight. It was possible to maintain the quality and lengthen the roll length per roll.

Reference Signs List 1 toilet roll 1a roll surface 1b roll back surface 1e outermost edge of toilet paper 1x toilet paper 12 original paper roll 13 base paper roll 110 roll winding machine 111 embossing roll 112 rubber roll 113 winding mechanism 114 rider roll 2 embossing pattern 21 Auxiliary Embossed Pattern MD Flow Direction W Width Direction DR Winding Diameter DI Core Outer Diameter

Claims (5)

  It is a toilet roll which is laminated in 2 plies and rolled up toilet paper having an embossed pattern in a roll shape, with a winding length of 63 to 128 m, a winding diameter of 103 to 151 mm, and an embossing pattern area ratio of 25 % Or more and 80% or less, toilet roll. A line connecting the center of gravity of the embossed pattern in the flow direction and the width direction is substantially linear,
The toilet roll according to claim 1, wherein the separation distance in the width direction of the adjacent embossing patterns is larger than the separation distance in the flow direction.   The toilet roll according to claim 2, wherein the inclination of the line connecting the center of gravity of the embossed pattern in the flow direction with respect to the line parallel to the flow direction is 0 ° or more and 10 ° or less. Between the embossing patterns adjacent in the width direction, there is an auxiliary embossing pattern,
The toilet roll according to claim 2 or 3, wherein a substantially comma shape or a substantially reverse comma shape is formed by the embossing pattern and the auxiliary embossing pattern.   The toilet roll according to any one of claims 1 to 4, wherein the depth of the embossed pattern is 0.01 mm or more and 0.34 mm or less.