Kitchen paper roll and method for manufacturing a kitchen paper roll

Abstract

To provide a kitchen paper roll having good touch and use feeling of paper while being long, and excellent in water absorbing performance.SOLUTION: A kitchen paper roll is obtained by winding a kitchen paper applied with embossing process of 1 ply in a roll state. The kitchen paper roll is such that: a basis weight of the kitchen paper is 37 g / m2 or more and 53 g / m2 or less; a paper thickness of the kitchen paper is 2.8 mm / 10 ply or more and 4.3 mm / 10 ply or less; a wound length of the roll is 36 m or more and 56 m or less; and a wound diameter of the roll is 112 mm or more and 128 mm or less.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a kitchen paper roll and a method for manufacturing the same.

Background Art

[0002] In recent years, in roll products such as toilet paper rolls, hand towel rolls, and kitchen paper rolls (kitchen towel rolls), there has been a trend towards longer lengths with environmental considerations. Hand towels and kitchen paper are often required to absorb a large amount of moisture from objects, and water absorption performance (water absorption degree, total water absorption (T.W.A.)) is important. As a two-ply paper, it is common to provide a gap between two sheets of paper to increase the water retention capacity.

[0003] On the other hand, kitchen paper rolls may be used for wiping the moisture of food. When directly touching and wiping moisture from objects with a rough surface such as meat or raw fish, there is a problem if the paper tears and remains on the object. Two-ply products have the drawback that the strength of a single ply of paper itself is weak, so the paper is likely to tear due to friction during food wiping. Therefore, kitchen paper rolls with a higher basis weight and strength of a single ply are preferred. However, products with a high basis weight and strength generally tend to feel rough to the touch and have a poor wiping feel (usability) of the object. Therefore, by applying an emboss with a specific area, area ratio, and height to the paper surface, the rough touch feeling is reduced (the usability is improved). When designing the emboss, in order to maintain the water absorption performance, which is inferior to that of two-ply products in single-ply products, as high as possible, it is important to make the emboss height as high as possible and to maintain the emboss shape retention (the emboss does not collapse when wound) during roll processing.

[0004] As prior art documents of roll products, for example, Patent Document 1 discloses a kitchen towel roll in which a kitchen towel sheet having a plurality of concavo-convex portions with one surface being convex and the corresponding opposite surface being concave and having perforations along the width direction is wound in a roll shape, with a winding length of 15 to 60 m, a winding diameter of 85 to 155 mm, a roll mass including a core of 130 to 530 g per 200 mm of roll width, and a longitudinal tensile strength DMDT based on JIS P8113 of the perforations of 3 to 25 N / 76 mm per 76 mm of roll width. Further, Patent Document 2 discloses a kitchen towel roll in which a kitchen towel sheet having a plurality of concavo-convex portions with one surface being convex and the corresponding opposite surface being concave is wound in a roll shape, with a winding length of 15 to 65 m, a winding diameter of 85 to 150 mm, and an apparent basis weight of the core of 200 to 550 g / m 2 , and a roll density of 0.10 to 0.30 g / cm 3 .

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] 1-ply embossing that has a good feel and usability and is designed with a high embossing height to improve water absorption performance is easily flattened when the kitchen paper is rolled, especially when winding from the bottom with a high winding pressure (this is particularly noticeable). As a result, the required functions tend not to be fully realized. On the other hand, to achieve longer lengths, it is easy to consider a method of designing the embossing lower (reducing the paper thickness) in advance, but needless to say, the good feel and water absorption performance of the paper cannot be fully realized. Therefore, it was considered difficult to achieve both longer roll lengths and good feel, usability, and water absorption performance of the paper.

[0007] The present invention has been made in view of such circumstances, and its object is to provide a kitchen paper roll that has a good feel and usability even when long, and also has excellent water absorption performance.

Means for Solving the Problems

[0008] The inventors of the present invention conducted intensive studies and found that in a 1-ply kitchen paper roll with embossing, by setting a predetermined basis weight, paper thickness, roll length, and roll diameter, it is possible to obtain a kitchen paper roll that has a good feel and usability even when long, and also has excellent water absorption performance, thus solving the above problems and completing the present invention. Specifically, the present invention provides the following.

[0009] (1) A first aspect of the present invention is a kitchen paper roll in which 1-ply embossed kitchen paper is wound in a roll, wherein the basis weight of the kitchen paper is 37 g / m 2 or more and 53 g / m 2 or less, the paper thickness of the kitchen paper is 2.8 mm / 10 plies or more and 4.3 mm / 10 plies or less, the roll length of the roll is 36 m or more and 56 m or less, and the roll diameter of the roll is 112 mm or more and 128 mm or less. (2) The second aspect of the present invention is the kitchen paper roll described in (1), wherein the area of each embossment in the above embossing process is 0.4 mm 2 or more and 1.8 mm 2 or less, and the total area ratio of the embossed portion to the total area of the above kitchen paper is 8% or more and 24% or less. (3) The third aspect of the present invention is the kitchen paper roll described in (1) or (2), wherein the height of the embossment in the upper 20% of the roll is 230 μm or more and 450 μm or less, and the height of the embossment in the lower 20% of the roll is 210 μm or more and 430 μm or less. (4) The fourth aspect of the present invention is the kitchen paper roll described in (3), wherein when the height of the embossment in the upper 20% is A and the height of the embossment in the lower 20% is B, the difference between A and B (A - B) is -10 μm or more and 40 μm or less. (5) The fifth aspect of the present invention is the kitchen paper roll described in any one of (1) to (4), wherein the softness of the roll is 0.8 mm or more and 2.8 mm or less. (6) The sixth aspect of the present invention is the kitchen paper roll described in any one of (1) to (5), wherein the outer diameter of the core of the roll is 30 mm or more and 50 mm or less. (7) The seventh aspect of the present invention is the kitchen paper roll described in any one of (1) to (6), wherein the dry longitudinal strength of the above kitchen paper is 16.7 N / 25 mm or more and 28.4 N / 25 mm or less, and the dry transverse strength is 5.9 N / 25 mm or more and 11.8 N / 25 mm or less. (8) The eighth aspect of the present invention is a method for manufacturing the kitchen paper roll described in any one of (1) to (7), wherein the processing method in the above embossing process is a matched embossment.

Advantages of the Invention

[0010] According to the present invention, it is possible to provide a kitchen paper roll that is long but has a good feel like paper and excellent water absorption performance when used.

Brief Description of the Drawings

[0011]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Embodiments for Carrying Out the Invention

[0012] Hereinafter, embodiments for carrying out the present invention (hereinafter referred to as embodiments) will be described in detail with reference to the drawings. However, these are presented for illustrative purposes and do not limit the present invention.

[0013] As shown in FIG. 1, the kitchen paper roll 1 of the present invention is formed by winding a kitchen paper 1x that has been embossed with a single ply into a roll shape. Note that the kitchen paper 1x may or may not have perforations, but it is preferably provided with perforations in order to improve the usability (not shown). At this time, the length from perforation to perforation (the sheet length of the kitchen paper 1x) is preferably 165 mm or more and 300 mm or less, and more preferably 200 mm or more and 260 mm or less. Further, the width (sheet width) W of the kitchen paper 1x in the kitchen paper roll 1 is preferably 180 mm or more and 400 mm or less, and more preferably 200 mm or more and 350 mm or less.

[0014] 1. Kitchen paper The basis weight of one piece of kitchen paper is 37 g / m 2 More than 53g / m 2 Less than 41 g / m 2 More than 49g / m 2 It is preferable that the basis weight is 37 g / m or less. 2 If the paper weight is less than 53g / m, the kitchen paper 1x will tear easily during use, and the usability and water absorption performance will be poor. 2 If the weight exceeds this, the kitchen paper 1x will be stiff and will have a poor feel and texture. The basis weight is measured and calculated based on JIS P 8124.

[0015] The thickness of the kitchen paper 1x is preferably 2.8 mm / 10 plies or more and 4.3 mm / 10 plies or less, and more preferably 3.1 mm / 10 plies or more and 3.9 mm / 10 plies or less. If the thickness is less than 2.8 mm / 10 plies, the kitchen paper 1x is easily torn when absorbing water, and the water absorption performance is also poor. If the thickness is more than 4.3 mm / 10 plies, the kitchen paper 1x is stiff and has poor feel and usability. The paper thickness can be measured using a thickness gauge (Ozaki Manufacturing Co., Ltd., dial thickness gauge "PEACOCK (registered trademark)"). The measurement method is a measurement load of 3.7 kPa, a probe diameter of 30 mm, a sample (10 sheets of kitchen paper 1x) is placed between the probe and the measurement table, and the gauge is read when the probe is lowered at a speed of 1 mm or less per second. The measurement is repeated 10 times, and the values obtained are averaged.

[0016] The dry longitudinal strength of Kitchen Paper 1x is preferably 16.7 N / 25 mm or more and 28.4 N / 25 mm or less, more preferably 19.6 N / 25 mm or more and 25.5 N / 25 mm or less. Also, the dry transverse strength is preferably 5.9 N / 25 mm or more and 11.8 N / 25 mm or less, more preferably 7.4 N / 25 mm or more and 10.3 N / 25 mm or less. If the dry longitudinal strength of Kitchen Paper 1x is less than 16.7 N / 25 mm or the dry transverse strength is less than 5.9 N / 25 mm, it is likely to tear and part of it will remain on the surface of the object when wiping off moisture, resulting in poor usability. If the dry longitudinal strength of Kitchen Paper 1x exceeds 28.4 N / 25 mm or the dry transverse strength exceeds 11.8 N / 25 mm, Kitchen Paper 1x will feel stiff and have poor touch and usability.

[0017] 2. Embossing Kitchen Paper 1x is embossed. Specifically, the embossments are those in which a single shape is regularly and repeatedly arranged, and the shape can be any shape such as a circle, an ellipse, a polygon, a substantially rectangular shape (a polygon with rounded corners), etc. The area of each embossment in the embossing process is preferably 0.4 mm 2 or more and 1.8 mm 2 or less, more preferably 0.8 mm 2 or more and 1.4 mm 2 or less. Also, the total area ratio of the embossed part to the total area of Kitchen Paper 1x is preferably 8% or more and 24% or less, more preferably 12% or more and 20% or less. If the area is less than 0.4 mm 2 or the area ratio is less than 8%, the feeling of the paper being bumpy when touching Kitchen Paper 1x is strong, resulting in poor touch. Also, when rolled up tightly, the embossments are likely to be crushed, the paper thickness decreases, and the water absorption performance deteriorates. If the area exceeds 1.8 mm 2 or the area ratio exceeds 24%, the embossments cannot exert sufficient effects, and a stiff feeling of the paper can be felt when touching Kitchen Paper 1x, resulting in poor touch and usability.

[0018] Further, it is preferable that the height of the emboss in the upper 20% winding of the roll is 230 μm or more and 450 μm or less, and more preferably 280 μm or more and 450 μm or less. Also, it is preferable that the height of the emboss in the lower 20% winding of the roll is 210 μm or more and 430 μm or less, and more preferably 260 μm or more and 380 μm or less. If the height of the emboss in the upper 20% winding of the roll is less than 230 μm, or if the height of the emboss in the lower 20% winding of the roll is less than 210 μm, the roughness of the base paper before embossing remains and the touch feeling is inferior. Also, the paper thickness becomes low and the water absorption performance is inferior. If the height of the emboss in the upper 20% winding of the roll exceeds 450 μm, or if the height of the emboss in the lower 20% winding of the roll exceeds 430 μm, the feeling of stickiness when touching the emboss is strong and the touch feeling is inferior.

[0019] Furthermore, when the height of the emboss in the upper 20% winding is designated as A and the height of the emboss in the lower 20% winding is designated as B, it is preferable that the difference (A - B) between A and B is -10 μm or more and 40 μm or less, and more preferably -5 μm or more and 30 μm or less. If the difference (A - B) between A and B exceeds 40 μm, it indicates that the emboss in the lower winding is flattened and lower than the upper winding, and a quality difference occurs between the upper and lower windings (the paper thickness in the lower winding part is low and the water absorption performance is inferior). In this case, the upper winding and the lower winding respectively represent the outer part of the roll (the part closer to the roll surface) and the inner part of the roll (the part closer to the core). For example, for a kitchen paper roll 1 with a winding length of 50 m, the upper 20% winding means the first 10 m at the start of use, and the lower 20% winding means the last 10 m.

[0020] The height and area of the emboss are measured using a microscope. As the microscope, the product name "One Shot 3D Measurement Macroscope VR-3100" manufactured by Keyence Corporation can be used. As the image analysis software, the product name "VR-H1A" can be used. Also, the measurement conditions are to measure under the conditions of a magnification of 12 times and a field area of 24 mm × 18 mm. The measurement magnification and field area may be appropriately changed depending on the size of the emboss to be obtained. Note that although three-dimensional measuring machines and contour shape measuring machines measure with points and lines, in the case of the above microscope, since the entire surface is measured, the overall shape and undulation are easily understood.

[0021] Figures 2 and 3 show a specific method for measuring the height of the emboss. Figure 2 shows one emboss, with the length a of the longest part of the periphery fr of the emboss, and the length of the longest part in the direction perpendicular to the length a is b. Figure 3(a) shows the height profile on the X-Y plane by the microscope, and it can be seen that the height of the kitchen paper 1x surface is represented by shading. The dark-colored parts in Figure 3(a) indicate individual embosses. When a line segment A-B is drawn across the length b of the longest part shown in Figure 2 for one of these embosses, a height (measurement cross-sectional curve) profile of the emboss as shown in Figure 3(b) can be obtained. Here, since the convex and concave parts of the emboss can be seen from the shading of the color in the X-Y plane image, the line segment A-B may be determined so as to cross the part where the convex and concave parts are adjacent. In the case of measuring the length a of the longest part of the emboss shown in Figure 2, the line segment A-B is in the vertical direction. Here, the height profile in Figure 3(b) is a (measurement) cross-sectional curve S representing the unevenness of the actual sample surface of the kitchen paper 1x, but it also includes noise (such as fiber lumps on the surface of the kitchen paper 1x, fibers extending in a whisker shape, or steep peaks caused by parts without fibers). When calculating the height difference of the unevenness, it is necessary to remove such noise peaks. Therefore, as shown in Fig. 4, the "contour curve" W is calculated from the cross-sectional curve S of the height profile. Among this contour curve W, two curvature maximum points P1 and P2 that are convex upward are obtained, and the minimum value sandwiched between the curvature maximum points P1 and P2 is determined as the minimum height value Min. Furthermore, the average value of the height values of the curvature maximum points P1 and P2 is defined as the maximum height value Max.

[0022] In this way, the height of the emboss is set as the maximum value Max - the minimum value Min. Also, the distance (length) in the X-Y plane between the curvature maximum points P1 and P2 is defined as the length of the longest part a. The "contour curve" is a curve obtained by removing the surface roughness component with a shorter wavelength than λc: 800 μm (where λc is the "filter that defines the boundary between the roughness component and the waviness component" described in JIS B 0601 "3.1.1.2") from the cross-sectional curve by a low-pass filter. Note that if λc is set to be equal to or greater than the interval between P1s of adjacent embosses (this is called the emboss pitch), there is a possibility that the peak will be recognized as noise, so λc is set to be less than the emboss pitch. For example, when the emboss pitch is 800 μm or less, for example, λc is set to 250 μm. The interval between P1s of adjacent embosses is obtained by similarly determining P1 and P2 for the next emboss connected to the left or right in Fig. 4, and it is the interval between the two P1s when P1, P2, and P1 are aligned for adjacent embosses.

[0023] Similarly, in Fig. 3(a), the height of the emboss and the length of the longest part a are also measured for the longest part a in Fig. 2, and the larger value among the heights of the embosses of the longest parts a and b is adopted as the height of the emboss. The above measurements are performed for any 10 embosses on the surface of the kitchen paper 1x, and the average value is adopted as the final height of the emboss. Also, for the 10 embosses, the area is determined using image analysis software, and the average is set as the area for each emboss.

[0024] In the manufacturing method of the kitchen paper roll 1 of the present invention, the processing method in the embossing process of embossing the kitchen paper 1x is preferably a matched embossing such as a matched steel embossing. The matched embossing is, for example, as disclosed in Japanese Patent Application Laid-Open No. 2002-512660, and is formed by sandwiching paper between a convex roller having a large number of convex bodies and a concave roller having a large number of concave bodies complementary to the convex bodies so that the convex bodies and the concave bodies engage with each other, and applying heat as necessary.

[0025] 3. Roll For the kitchen paper roll 1 of the present invention, the winding length of the roll is preferably 36 m or more and 56 m or less, more preferably 41 m or more and 51 m or less. If the winding length of the roll is less than 36 m, the roll is not long enough, and the consumption per roll becomes fast, which is not good for the environment. If the winding length of the roll exceeds 56 m, the winding diameter of the roll becomes too large, making it difficult to handle. Further, for the kitchen paper roll 1 of the present invention, the winding diameter DR of the roll is preferably 112 mm or more and 128 mm or less, more preferably 116 mm or more and 124 mm or less. If the winding diameter DR of the roll is less than 112 mm, the winding pressure of the roll becomes strong, and the embossing of the lower winding is likely to be crushed, resulting in inferior touch, usability, and water absorption performance. If the winding diameter DR of the roll exceeds 128 mm, the winding pressure of the roll becomes weak, and winding wrinkles are likely to occur or the roll is likely to be deformed, resulting in inferior usability.

[0026] The outer diameter DI of the core in the kitchen paper roll 1 is preferably 30 mm or more and 50 mm or less, more preferably 35 mm or more and 45 mm or less. If the outer diameter DI of the core is less than 30 mm, the winding pressure of the roll becomes weak, and winding wrinkles are likely to occur or the roll is likely to be deformed, resulting in inferior usability. If the outer diameter DI of the core exceeds 50 mm, the winding pressure of the roll becomes strong, and the embossing of the lower winding is likely to be crushed, resulting in inferior touch, usability, and water absorption performance.

[0027] Also, the softness of the roll of the kitchen paper roll 1 is preferably 0.8 mm or more and 2.8 mm or less, and more preferably 1.3 mm or more and 2.3 mm or less. If the softness of the roll is less than 0.8 mm, the winding pressure of the roll becomes strong, and the embossing of the lower winding is likely to be crushed, resulting in inferior touch and usability. If the softness of the roll exceeds 2.8 mm, the winding pressure of the roll becomes weak, wrinkles are likely to occur in the roll, or the roll is likely to be deformed, resulting in inferior usability and water absorption performance.

[0028] In addition, this softness of the roll can be defined as the amount of deformation of the kitchen paper roll 1 when a load of 625 g is applied to the kitchen paper roll 1 of the present invention, and this softness of the roll is measured using the measuring device 10 shown in FIG. 5. The measuring device 10 includes a base portion 2, support rods 4a and 4b, a moving weight placing plate 6, and a 625 g weight 8. The two support rods 4a and 4b stand vertically from the base portion 2, and insertion holes for the respective support rods 4a and 4b are provided at both ends of the rectangular moving weight placing plate 6. Then, the kitchen paper roll 1 is placed on the base portion 2 between the respective support rods 4a and 4b, the support rods 4a and 4b are inserted through the moving weight placing plate 6 from above the kitchen paper roll 1, and the moving weight placing plate 6 is placed on the upper surface of the kitchen paper roll 1. Let the height of the moving weight placing plate 6 in this state be the initial height h1. Further, when the weight 8 is placed on the moving weight placing plate 6, the moving weight placing plate 6 slides through the respective support rods 4a and 4b due to the weight of the weight 8, and the kitchen paper roll 1 is deformed and sinks. Therefore, the height h2 at this time is measured, and (h2 - h1) is obtained as the amount of deformation of the diameter of the kitchen paper roll 1.

[0029] The kitchen paper roll 1 that satisfies the above basis weight, paper thickness, roll length, and roll diameter DR has a winding pressure that does not become too strong, and the embossing is maintained without being crushed until the lower winding of the roll. Therefore, it can be functionally used without impairing the quality such as touch, usability, and water absorption performance from the beginning to the end.

[0030] Although the present invention has been described using the embodiments, it goes without saying that the technical scope of the present invention is not limited to the scope described in the above embodiments and examples. It is obvious to those skilled in the art that various changes or improvements can be made to the above embodiments. Also, it is obvious from the description of the claims that forms with such changes or improvements can also be included in the technical scope of the present invention.

Examples

[0031] Hereinafter, the present invention will be described in detail with reference to examples. Note that the present invention is not limited to the examples shown below.

[0032] Kitchen paper rolls of Examples 1 to 8 and Comparative Examples 1 to 5 described in Tables 1 and 2 were produced, and the basis weight, paper thickness, dry longitudinal strength, dry transverse strength, embossed area, area ratio, height of the upper 20% and height of the lower 20% of the roll and the difference between them, roll length, roll diameter, roll softness, and outer diameter of the core of each kitchen paper were measured. Then, the dropwise water absorption degree and the total water absorption (T.W.A.) were measured as indexes of the water absorption performance of each kitchen paper, and finally, the usability of the kitchen paper was evaluated.

[0033] The dropwise water absorption degree was obtained by measuring the time (seconds) from when a 0.1 ml water droplet reached the surface of the test piece until the specular reflection of the test piece disappeared, in accordance with the water absorption rate test specified in JIS L 1907. For T.W.A., first, the kitchen paper was cut into a 75×75 mm square to prepare a test piece, and the dry weight was measured. Next, after immersing this test piece in distilled water for 2 minutes, in a container in a water vapor-saturated state, with one corner of the test piece at the upper top, it was hung in a stretched state (100% RH) supporting the two corners adjacent to this top, left for 30 minutes, and the weight after draining was measured. For draining, a paper towel was cut into 3×38 mm and used. Then, the measured value was converted to the water retention per 1 m 2 of the test piece (g / m 2 ) to obtain a value.

[0034] As for the evaluation of the drip water absorption degree, if the time is less than 30 seconds, it is regarded as "excellent" indicating that the water can be absorbed very quickly. If the time is 30 seconds or more and less than 35 seconds, it is regarded as "good" indicating that the water can be absorbed quickly. If the value is 35 seconds or more, it is regarded as "unacceptable" indicating that the water absorption speed is slow. Also, as for the evaluation of T.W.A., if the value is 90 g / m 2 or more, it is regarded as "excellent" indicating that a particularly large amount of water can be wiped off. If the value is 80 g / m 2 or more and less than 90 g / m 2 it is regarded as "good" indicating that a large amount of water can be wiped off. If the value is less than 80 g / m 2 it is regarded as "unacceptable" indicating that the amount of water wiped off is small.

[0035] In addition, the sensory evaluation regarding the usability of the kitchen paper was conducted for 60 people, and each person evaluated it from 1 point to 5 points. It was evaluated according to the following criteria, and a score of good or above was considered a pass. "Excellent (◎ in the table)": The touch feeling is particularly good, and the object can be wiped very smoothly; the average score of the evaluation by 60 people is 4.0 points or more "Good (○ in the table)": The touch feeling is good, and the object can be wiped smoothly; the average score is 3.0 points or more and less than 4.0 points "Unacceptable (× in the table)": The touch feeling is rough, and the wiping feeling of the object is also inferior. The average score is less than 3.0 points The results are shown in Table 1 and Table 2.

[0036]

Table 1

[0037]

Table 2

[0038] As shown in Table 1, all of the kitchen paper rolls of Examples 1 to 8 were excellent in touch and usability, and also had good water absorption performance. On the other hand, as shown in Table 2, the kitchen paper rolls of Comparative Examples 1 to 5 were inferior in touch, usability and / or water absorption performance. As described above, the kitchen paper roll of the present invention can provide a kitchen paper roll that has a good feel and usability of paper even when it is long, and also has excellent water absorption performance.

Explanation of Signs

[0039] 1 Kitchen paper roll 2 Base part 4a, 4b Support rods 6 Moving weight placing plate 8 Weight 10 Measuring device

Claims

1. A kitchen paper roll in which the kitchen paper subjected to single-sided embossing is wound in a roll shape, wherein the embossing is by matched steel embossing, The basis weight of the kitchen paper is 37 g / m ２ or more and 53 g / m ２ or less, and the paper thickness of the kitchen paper is 3.4 mm / 10 ply or more and 4.3 mm / 10 ply or less, the winding length of the roll is 36 m or more and 56 m or less, and the winding diameter of the roll is 112 mm or more and 128 mm or less. A kitchen paper roll characterized by the above.

2. The kitchen paper roll according to Claim 1, wherein the winding softness of the roll is 0.8 mm or more and 2.8 mm or less.

3. The area of each emboss in the embossing process is 0.4 mm ２ or more and 1.8 mm ２ or less, and The kitchen paper roll according to Claim 1 or 2, wherein the total area ratio of the embossed portions to the total area of the kitchen paper is 8% or more and 24% or less.

4. The height of the embossing in the upper 20% of the roll is 230 μm or more and 450 μm or less, and the height of the embossing in the lower 20% of the roll is 210 μm or more and 430 μm or less. The kitchen paper roll according to any one of Claims 1 to 3.

5. When the height of the embossing in the upper 20% is designated as A and the height of the embossing in the lower 20% is designated as B, the difference (A - B) between A and B is -10 μm or more and 40 μm or less. The kitchen paper roll according to Claim 4.

6. The kitchen paper roll according to any one of Claims 1 to 5, wherein the outer diameter of the core of the roll is 30 mm or more and 50 mm or less.

7. The kitchen paper roll according to any one of Claims 1 to 6, wherein the dry longitudinal strength of the kitchen paper is 16.7 N / 25 mm or more and 28.4 N / 25 mm or less, and the dry transverse strength is 5.9 N / 25 mm or more and 11.8 N / 25 mm or less.

8. A method for manufacturing the kitchen paper roll according to any one of Claims 1 to 7, characterized in that the processing method in the embossing is matched steel embossing. A method for manufacturing the kitchen paper roll according to any one of Claims 1 to 7.

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