Kitchen paper roll

Abstract

To provide a kitchen paper roll excellent in designability and oil absorption property even when a wound length is long.SOLUTION: A kitchen paper roll comprises a wound kitchen paper obtained by laminating sheets with a basis weight of 1 ply of 15.0-23.0 g / m2 in 2 plies, and having irregularity by embossing. The kitchen paper roll is such that: a wound length is 22-32 m; a paper thickness is 1.5 mm / 5 sheets-2.2 mm / 5 sheets; the tops of protrusions of the respective sheets in embossing are laminated to face each other; and parts protruding to a laminate outer surface side of the wound inner surface side sheet are formed in parts of the wound inner surface side sheet, corresponding to the embossed protrusions of the wound outer surface side sheet.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a kitchen paper roll. [Background technology]

[0002] In recent years, paper roll products have become longer, including kitchen paper rolls. This is due to the advantages of paper rolls, such as ease of transport after purchase, reduced frequency of purchase and replacement, and convenient storage space. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2020-044385 Summary of the Invention [Problem to be solved by the invention]

[0004] To increase the length, it is sufficient to increase the roll diameter, but a larger diameter requires more space for portability, storage, and sales. Therefore, it is desirable to increase the length while keeping the roll diameter at the same level as conventional products.

[0005] To increase the length without increasing the diameter, it has been considered to reduce the basis weight and thickness of the sheet and to wind it tightly. However, simply reducing the basis weight, thickness and winding it tightly makes the sheet thin and prone to tearing, and the difference in quality compared to conventional products that are not long may cause dissatisfaction among consumers.

[0006] Furthermore, some kitchen paper has a textured surface formed by embossing to improve design, liquid absorption, etc. When this textured surface is embossed and rolled up tightly, the textured surface and the gaps between sheets can be crushed, making it difficult to achieve the desired design, liquid absorption, and other qualities.

[0007] Therefore, the main object of the present invention is to provide a kitchen paper roll that has sufficient quality in terms of design and liquid absorption, is prevented from becoming large in diameter due to being made long, and has unevenness due to embossing. [Means for solving the problem]

[0008] The first means for solving the above problem is: The basis weight of one ply is 15.0 to 23.0 g / m 2 Sheets of laminated in two plies, A kitchen paper roll in which the kitchen paper having embossed unevenness is wound up, The roll length is 22 to 32 m (pitch x number of cuts), and the paper thickness is 1.5 mm / 5 sheets to 2.2 mm / 5 sheets. The sheets are laminated such that the tops of the convex portions formed by embossing face each other, and the sheet on the inner winding side has a convex portion formed on the outer surface of the laminate on the sheet on the inner winding side, in a portion corresponding to the convex portion formed by embossing on the sheet on the unwinding side. This is a kitchen paper roll characterized by the above.

[0009] The second method is A frame-like convex edge portion is formed on the outer surface of the laminate along the edge of a portion corresponding to the top of the convex portion when embossed on the inner surface of the sheet when it is wound. This is a kitchen paper roll according to the first aspect.

[0010] The third method is In the kitchen paper roll according to the first aspect, the depth of the recesses in the unwinding surface sheet (surface D) is 0.060 to 0.765 mm.

[0011] The fourth method is In the kitchen paper roll according to the first aspect, the height (H back) of the portion of the inner winding sheet that is convex toward the outer laminate surface is 0.060 μm to 0.250 μm. [Effects of the Invention]

[0012] According to the present invention, it is possible to provide a kitchen paper roll that has sufficient quality in terms of design and liquid absorption, is prevented from becoming larger in diameter due to being longer, and has unevenness due to embossing. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 1 is a schematic explanatory diagram of a kitchen paper roll. [Figure 2] FIG. 2 is a cross-sectional view of the sheets immediately after lamination. [Figure 3] FIG. 1 is a diagram showing an example of a cross section of kitchen paper. [Figure 4] FIG. 10 is a diagram illustrating an example of embossing of kitchen paper. [Figure 5] 1 is a plan view of an example of a sheet on the unwinding surface side. [Figure 6] 10 is a diagram illustrating a method for measuring the depth of a recess in a sheet on the unwinding surface side. FIG. [Figure 7] 10 is a diagram for explaining a method for measuring the height of the convex portion on the outer surface of the laminate of the sheet on the inner winding side. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0014] Next, embodiments of the present invention will be described in detail below with reference to the drawings. As shown in FIG. 1, a kitchen paper roll 1 is made by winding two plies of strip-shaped kitchen paper 10 around a paper tube (also called a tube core) 20 in a roll shape.

[0015] The winding length is 22 The winding diameter L2 is preferably 105 to 125 mm, and more preferably 110 to 120 mm.

[0016] While commercially available two-ply kitchen paper rolls 1 are generally about 10 to 15 m long, the kitchen paper roll 1 of the present invention has a fairly long roll length of 22 to 32 m and a preferred roll diameter L2 of 105 to 125 mm, making it easy to carry after purchase and convenient to store.

[0017] The winding length of a kitchen paper roll is a value calculated by multiplying the cutting pitch by the number of cuts. The kitchen paper roll 1 has perforations 12 formed to allow it to be easily cut at predetermined intervals for easy use like sheets. The distance L4 between these perforations 12 is the cutting pitch. The cutting pitch is approximately 18 to 25 cm. The kitchen paper roll of this embodiment also falls within this range.

[0018] The number of cuts is the number of sheets of kitchen paper obtained by cutting along the perforations 12, and corresponds to the number of sheets. In The number of cuts is about 50 to 70. In this embodiment, the number of cuts is preferably 90 to 180, and more preferably 100 to 140. The length increases as the number of cuts increases.

[0019] The winding diameter L2 is determined by measuring the outer circumference of the roll at three locations in the width direction using a diameter rule (Muratec KDS Co., Ltd.) and calculating the average value of the three locations.

[0020] The roll width L1 is not limited, but can be 200 to 230 mm, similar to commercially available products. The roll width is calculated by measuring the axial length of the outer peripheral surface of the roll at three points on the outer periphery of the roll using a JIS Class 1 metal ruler and averaging the measured values.

[0021] The cardboard tube diameter L3 is not necessarily limited, but is set to 35 to 45 mm. The cardboard tube diameter is a factor in adjusting the winding density, which will be described later. The cardboard tube diameter is calculated by measuring the outer circumference of the cardboard tube at three points in the width direction using a diameter rule (Muratec KDS Co., Ltd.) and taking the average value of the three points.

[0022] The kitchen paper 1 according to this embodiment is made up of two laminated plies of crepe paper sheets 10A and 10B, each of which has an uneven surface due to embossing, preferably steel-rubber embossing.

[0023] In the kitchen paper of this embodiment, the sheets 10A and 10B are stacked so that the peaks of the convex portions formed during embossing face each other. Immediately after the embossed sheets 10A and 10B are stacked, as shown in FIG. 2, the peaks of the convex portions 11A of the first crepe paper 10A, which constitutes one side of the kitchen paper 1, face the peaks of the convex portions 11B of the second crepe paper 10B, which constitutes the other side, forming a tip-to-tip configuration. During this stacking process, the first crepe paper 10A and the second crepe paper 10B are preferably bonded together at the peaks of the convex portions that contact each other. The adhesive 10C can be any known adhesive used in kitchen paper with a laminated structure. Examples include cellulose-based adhesives such as polyvinyl alcohol, starch, modified starch, and carboxymethyl cellulose. Another known embossed form is the nested form, in which the peaks of the convex portions of the first crepe paper constituting one side of the kitchen paper face the non-convex portions of the second crepe paper constituting the other side. Because the convex portions of each sheet do not face each other, the nested form reduces the bulk (thickness) of the sheet without reducing the sheet basis weight, compared to the tip-to-tip form. While this appears to be suitable for long lengths, the gaps between sheets tend to be narrow, resulting in a lower oil absorption. In particular, when the paper is tightly wound due to long lengths, the gaps between sheets tend to collapse, resulting in a more pronounced decrease in oil absorption.

[0024] This kitchen paper roll 1 employs a tip-to-tip embossed form, which tends to make the kitchen paper 10 bulky and difficult to lengthen, and the uneven shape of the embossing and winding have been devised to prevent the diameter from increasing due to lengthening while maintaining sufficient quality in terms of design and liquid absorption. In other words, in a typical tip-to-tip embossing pattern, the sheets are left as they are after embossing, i.e., as shown in Fig. 2, the peaks of the convex portions 11A, 11B of each sheet 10A, 10B remain facing each other, and only the concave portions 13A, 13B are present on the surface of each sheet. However, in the kitchen paper roll 1 of this embodiment, as shown in Figs. 3 and 7(A), the sheets 10A, 10B are stacked such that the peaks of the convex portions 11A, 11B of each sheet face each other after embossing, but in the rolled state, the inner roll sheet 10B, which is located on the paper tube side, has convex portions 13b, 13c that extend toward the outer surface of the stack of the inner roll sheet 10B, at the portions that correspond to the convex portions 11A embossed on the unrolled sheet 10A. Note that the outer surface of the stack is the side of the sheets that do not face each other.

[0025] In order to form such convex portions 13b, 13c on the outer surface side of the laminate of the sheet 10B on the inner winding side, the convex portions 11B may be pressed from the outer winding side of the sheet 10A, and the convex portions 10B of the sheet 10B on the inner winding side may be pushed toward the outer surface side of the laminate. As a method for this, for example, as shown in FIG. 4, after forming the concave and convex portions by embossing the sheets 10A, 10B with embossing rolls 61A, 61B and elastic rolls 61A, 62A, the sheets 10A, 10B are laminated on the embossing roll 61A of the sheet 10A on the unwinding side, and then the embossing roll 61A is pressed against the elastic marriage roll 62A. 23 One example is to laminate the two sheets with an appropriate nip pressure by pressing the two sheets together. Furthermore, at this time, embossing may be performed by using metal embossing rolls with different engravings (mainly the height of the convex portions) to form recesses of different depths in each sheet. Furthermore, the nip width (nip pressure) may be made different during embossing of each sheet. However, the present invention is not limited to these exemplary methods.

[0026] In the kitchen paper roll 1 of this embodiment, the characteristic uneven shape described above prevents the embossing of the crepe paper on the unwinding side from being crushed, which has a significant impact on the design when the roll is wound tightly due to the length increase, and ensures the clarity of the embossing. Furthermore, the sheet 10B on the inner winding side is laminated at positions corresponding to the concave (convex) portions embossed by the crepe paper 10A on the unwinding side. outside By forming the convex portions 13b and 13c so that they slightly protrude toward the surface side, the decrease in oil absorption is minimized. side The recess 11A of the crepe paper 10A has a depth, and the inner surface of the winding side It is also thought that the formation of the protrusions 13b, 13c on the crepe paper 10B causes a difference in tension and deformation between the front and back of the sheets 10A, 10B when they are wound up, making it easier to wind them into a roll.

[0027] Furthermore, particularly with regard to the convex portions 13b and 13c, it is desirable to form a frame-shaped convex edge portion 13c on the outer surface of the laminate along the edge of the portion of the sheet 10B on the inner surface of the rewinding sheet that corresponds to the convex top portion during embossing. However, the convex edge portion 13c is not necessarily formed. It may also be formed only on a portion of the edge of the portion corresponding to the convex top portion. This convex edge portion 13c improves wiping performance. Furthermore, as shown in the figure, the edge of the portion corresponding to the convex top portion corresponds to a portion where the sheets are not in contact with each other during embossing. Therefore, this convex edge portion 13c indicates that the sheets are not in close contact with each other or there is a gap between the sheets. Therefore, it is presumed that this convex edge portion 13c minimizes the decrease in oil absorption. It is presumed that this convex edge portion 13c is formed when the convex top portion of the sheet on the unwinding surface presses against the convex top portion on the inner surface of the rewinding sheet, causing distortion of the edge of the convex top portion.

[0028] The embossing depth (D surface) of the recesses 13A of the crepe paper 10A on the unwinding side is preferably 0.060 to 0.765 mm, more preferably 0.102 to 0.493 mm, and particularly preferably 0.120 to 0.255 mm. Within this range, design and oil absorbency can be easily ensured.

[0029] The depth of the embossed recesses is determined by image analysis using a Keyence Corporation One-Shot 3D Measuring Macroscope VR-3200 or equivalent and image analysis software "VR-H1A" or equivalent software. The measurement conditions for the embossed image are a magnification of 12x and a field of view of 24mm x 18mm. However, the magnification and field of view can be changed as appropriate depending on the size of the protrusions. The embossing depth is determined by measuring line roughness. The specific measurement procedure is described with reference to FIG. 6. Using the software, an "embossing depth (measurement curve) profile Q2" is obtained along a line segment Q1 that crosses the longest portion of the periphery of one recess 13A in the image area (part X in the figure) shown from a planar perspective. From the "embossing depth (measurement curve) profile Q2" of the image area (part Y in the figure) shown from this perspective, two recess edge points P1 and P2, which are the most strongly curved and convex upward, are extracted. The minimum depth value of the portion between these recess edge points P1 and P2 is determined and defined as the minimum depth value Min. Furthermore, the average of the depth values of the recess edge points P1 and P2 is defined as the maximum depth value Max. The embossing depth is then calculated as Max = Maximum value Max - Minimum value Min. Note that the "embossing depth (measurement curve) profile Q2" is a corrected profile curve with "automatic correction" performed to correct the slope in consideration of the waviness of the sheet. The depth of the recess is the average of 10 measurements taken at 30% from the outermost edge at the start of use. The two recess edge points P1 and P2, which are the most strongly curved and convex upward, are selected visually. The contour E in the planar image of the recess 13A being measured may also be used as a reference for selection.

[0030] On the other hand, the height (H back) of the portion 13b corresponding to the peak of the portion formed on the crepe paper 10B on the inner winding side that is convex toward the outer laminate surface is preferably 0.060 μm to 0.200 μm, more preferably 0.070 μm to 0.200 μm.

[0031] The height of this convex portion 13b is also determined by image analysis using a one-shot 3D measuring macroscope VR-3200 manufactured by Keyence Corporation or an equivalent device and image analysis software "VR-H1A" or an equivalent software. The height of the convex portion 13b is also determined by measuring the line roughness. The specific measurement procedure will be explained with reference to Figure 7. Using the above software, five linearly adjacent convex portions are extracted from the image portion shown in a planar perspective (Figure 7(A)). Next, as shown in Figure 7(B), a "height difference curve Q4" is obtained on a line segment Q3 that crosses these five convex portions. This "height difference curve Q4" is a corrected profile curve in which the inclination correction is performed as "automatic correction" in consideration of the waviness of the sheet. Next, the image portion shown in a planar perspective in Figure 7(A) is and Figure 7(B) and the "height difference curve Q4", the center positions P1 to P5 of the five convex portions (concave portions formed during embossing) are visually identified, and the depths (heights) of these P1 to P5 are extracted as reference heights. Next, the image portion shown in the plan view of FIG. 7(A) is and Figure Using the "height difference curve Q4" shown in Figure 7(B), the central positions D1 to D4 of the four unembossed portions between points P1 to P5 are visually identified, and the depths (heights) of D1 to D4 are extracted as the reference depths. The difference between the average reference height of the protrusions P1 to P5 and the average reference depth of the four unembossed portions D1 to D4 is defined as the protrusion height (H back). Note that if this protrusion height value is a positive value, regardless of whether it is within the preferred range, it can be said that protrusions are formed on the inner winding surface.

[0032] The kitchen paper 10 of the embodiment is embossed, but the embossing pattern in plan view is not necessarily limited. The embossing can be any suitable embossing pattern. One example of a preferred embossing pattern is a pattern having a substantially rectangular embossed section 40 in which a plurality of recesses are arranged, and a non-embossed section 50 located between them, as shown in the plan view of the sheet on the outer surface side of the roll in FIG. 5. The shape of the embossed section may be square, rectangular, diamond, circular, or the like. The area of one embossed section 40 is not necessarily limited, but is preferably 3 to 16 cm. 2 The number of recesses 13A, 13B in the embossed section can be, for example, about 10 to 100. The non-embossed section 50 is a portion between the embossed sections 40 where there are no recesses and the width L8 is 3.0 to 10.0 mm.

[0033] Here, the kitchen paper 10 according to the embodiment has a basis weight of 15.0 to 23.0 g / m 2 The preferred range is 16 to 21 g / m 2 The basis weight is based on JIS P 8124 (1998). However, the basis weight value is calculated by measuring the basis weight of one sheet of kitchen paper and dividing it by the number of sheets, i.e., two sheets. This basis weight range is low for kitchen paper. If the basis weight is too high, expensive If the roll length is too short, the strength will decrease and the paper will feel thin when used. The kitchen paper 1 according to this embodiment has sufficient quality in terms of design and oil absorption, even at a low basis weight, due to the unevenness of the sheet created by the characteristic embossing process described above.

[0034] The kitchen paper 10 according to the embodiment has a paper thickness of 1.5 mm / 5 sheets to 2.2 mm / 5 sheets. This paper thickness is measured by stacking the next 5 cuts, excluding the first cut from the end of the roll. The paper thickness of 5 sheets stacked (10 ply stacked) is less affected by the crushing of unevenness due to embossing during measurement. However, if the paper thickness is too thick, the roll length must be shortened, and conversely, if the paper thickness is too thick, thinThis leads to a decrease in strength, making the paper feel thinner during use. Paper thickness is measured by thoroughly conditioning the test specimen under the conditions specified in JIS P 8111 (1998) and then using a PEACOCK G-type dial thickness gauge (thickness measuring device) (manufactured by Ozaki Seisakusho) under the same conditions. Paper thickness is measured without removing each ply. The specific measurement procedure involves confirming that there is no dust or dirt between the plunger and the measuring table, lowering the plunger onto the measuring table, adjusting the dial thickness gauge's scale to the zero point, then raising the plunger and placing the sample on the testing table. The plunger is then slowly lowered and the gauge reading is taken. The plunger's terminal is made of metal, and its 10 mm diameter circular flat surface is placed perpendicular to the paper surface. The load during thickness measurement is approximately 70 gf at 120 μm. The thickness is the average value obtained by performing 10 measurements. In the embodiment, when the value of the paper thickness per sheet of kitchen paper is used, for example, the value in calculating the roll density is the value obtained by dividing the value for a stack of five sheets by five.

[0035] The kitchen paper 10 according to the embodiment achieves a high oil absorption value (oil absorption capacity value) of 33.0 to 43.0 due to the above-described configuration, particularly the embossing characteristics, as calculated by the following formula (1): Formula (1) [oil absorption capacity value (oil absorption capacity value)] = oil absorption amount [g / m 2 ] x [roll density] / grams per ply (g / m 2 ). Roll density = (2-ply paper thickness x roll length) / ((roll radius) 2 ×π-(radius of paper tube diameter) 2 × π). In other words, if the roll density is high, the roll will be tightly wound, making the unevenness caused by the embossing more likely to be crushed, resulting in a decrease in oil absorption. On the other hand, even if the roll density is improved by reducing the paper thickness through a decrease in the basis weight, the oil absorption will likely decrease due to the lower basis weight. Therefore, taking these points into consideration, it can be said that the oil absorption performance of the kitchen paper roll as a whole is high when the value of the [oil absorption performance value (oil absorption performance value)] is within the above range. A comparison with commercially available and conventional products will be made later.

[0036] The roll density of the kitchen paper roll 1 of this embodiment is not limited, but is preferably 1.20 or less, and more preferably 0.95 to 1.19. If the roll density is too high, the embossing is likely to be crushed, as mentioned above. This is particularly true for double embossing.

[0037] The oil absorption amount in this embodiment is measured as follows (1) to (5). (1) After curing the test piece in a dryer at 105°C for 3 minutes, measure the mass of the test piece using an electronic balance (such as A&D HR300). The size of the test piece is 100 mm x 100 mm. (2) In a tray (for example, inner dimensions: 215 mm x 160 mm) larger than the test specimen, salad oil (Nissin salad oil: manufactured by Nisshin Oillio Group, Inc.) at 25°C is placed to a depth of about 20 mm. (3) The test piece is spread out and placed on a rigid flat net (e.g., 120 mm x 120 mm, mesh size 30 mm) that is larger than the test piece, and then lowered into the tray containing the salad oil, so that the test piece is immersed in the oil so that it comes into contact with the oil surface. (4) Once the salad oil has soaked into the surface of the test piece, raise the flat net directly above the oil surface, leave it there for 26 to 27 seconds, then pick up a corner of the test piece with tweezers and transfer it to a pre-weighed measuring container. At this time, do not exceed 30 seconds from the time the flat net is raised above the oil surface and left to stand until it is transferred to the measuring container. (5) The mass of the measuring container containing the test piece is measured using an electronic balance, and the mass of the measuring container is subtracted from the measured value to calculate the mass of the test piece after oil absorption. Then, 1 m 2 The oil absorption per unit is calculated. Oil absorption (g / m 2 ) = ((Mass of oil-absorbed test piece measured in (4) above) - (Mass of test piece after 3 minutes of curing measured in (1) above)) × 100 (Note: One test piece is 100 cm 2 100 times)

[0038] The tensile strength of the kitchen paper 10 of this embodiment is not necessarily limited, but the tensile strength in the machine direction is preferably 650 to 1350 cN / 25 mm, more preferably 780 to 1220 cN / 25 mm, and the tensile strength in the cross direction is preferably 250 to 550 cN / 25 mm, more preferably 320 to 480 cN / 25 mm. The tensile strength refers to the tensile strength when dry (dry tensile strength). Tensile strengths within these ranges can be said to be the strength required for use. The tensile strength is measured in accordance with JIS P 8113:2006 using a test piece with a paper width of 25 mm.

[0039] The fiber material of the crepe papers 10A and 10B of the present embodiment is pulp fiber, and the pulp composition can be any known composition for kitchen paper 1. It is preferable that the composition contains 90 to 100 mass% virgin pulp. A pulp composition that exhibits the unique effects of the present invention is one that blends softwood pulp, such as NBKP (softwood kraft pulp) or NUKP (softwood unbleached pulp), with hardwood pulp, such as LBKP (hardwood kraft pulp) or LUKP (hardwood unbleached pulp), in an appropriate ratio. It is preferable that the pulp composition contains more softwood pulp than hardwood pulp. It is particularly preferable that the softwood pulp:hardwood pulp ratio is 50:50 to 80:20. Since softwood pulp has longer fibers than hardwood pulp, liquids tend to diffuse along the long softwood pulp fibers in pulp compositions containing a large amount of softwood pulp, making the effects of the present invention particularly apparent. Furthermore, firm stiffness is readily apparent, making the paper particularly suitable for use as kitchen paper for wiping or absorbing liquids.

[0040] The effects of the kitchen paper roll according to the present invention will be further described below with reference to examples and comparative examples of the kitchen paper roll 1. [Example]

[0041] The toilet paper used in each example was extracted from kitchen paper. The physical properties and composition of each example are shown in Table 1. In Table 1, the column for the height of the convex portion (depth of the concave portion (inner surface of the winding)) indicates the height of the portion that is convex on the outer surface of the laminate on the inner surface of the winding for the examples, and indicates the depth of the concave portion measured in the same manner as the depth of the concave portion on the unwinding surface for the comparative examples.

[0042] Furthermore, Example 2 and Comparative Example 4 were compared in a sensory evaluation test regarding the clarity of the embossing on the sheet on the unwinding side. The test was conducted by 17 people, and the average of the scores of 15 people, excluding the highest and lowest scores, was used as the evaluation score. The evaluation was conducted by using Comparative Example 4 as the standard and evaluating Example 2. That is, scores were assigned as follows: 4 points for the same as Comparative Example 4, 5 points for slightly good, 6 points for good, 7 points for very good, 3 points for slightly poor, 2 points for poor, and 1 point for very poor, and the average was calculated to make the judgment.

[0043] [Table 1]

[0044] According to the results in Table 1, the Examples tend to have higher oil absorption than the nested Comparative Examples 1, 2, 5, and 6, which have higher basis weights. For the nested examples, the winding length is about 21 m, and for Comparative Example 1, which has deep embossed recesses, it is about the same as Example 1, which is over 26 m. For the nested examples, it tends to be difficult to achieve sufficient length and oil absorption. Furthermore, in the Examples, the embossed recesses on the unwinding surface side are deep, and convex portions are formed on the winding inner surface side, but the oil absorption is higher than that of the comparative examples with long winding lengths except for comparative example 3. It is about the same as comparative example 3 with a low roll density and short length. Looking at the oil absorption performance values, Comparative Example 2 has a high basis weight and a long winding length, but is nested, so the oil absorption performance is low when viewed as a whole roll. Comparative Example 3 has a high basis weight and tip-to-tip, but is short in winding length, so the oil absorption performance is low when viewed as a whole roll. Furthermore, when comparing the Examples and Comparative Example 4, Comparative Example 4 has a lower oil absorption. Even in tip-to-tip applications, simply increasing the winding length to reduce the basis weight is thought to reduce the oil absorption. Furthermore, the oil absorption performance of the entire roll is not sufficiently improved. While the embossing is crushed and the embossed shape is distorted, another factor is thought to be the proximity of the paper layers in areas other than the embossed recesses, i.e., the collapse of the gaps between the sheets. In addition, the result regarding the clarity (design) of the embossment on the surface layer was 4.7 points for Example 2, which was higher than that of Comparative Example 4. The depth of the recesses was deeper in Comparative Example 4, but the embossed of clear degree The results showed that Example 2 was better. As shown in the above embodiment, the configuration of the present invention allows: meaning It is possible to provide a kitchen paper roll that has sufficient quality in terms of design and liquid absorption, prevents the diameter from increasing due to lengthening, and has unevenness due to embossing. [Industrial Applicability]

[0045] The kitchen paper roll of the present invention can be used for home use as well as for commercial use (for example, in airport cafeterias and hospitals where it is used by an unspecified number of people). [Explanation of symbols]

[0046] 1...Kitchen paper roll, 10...Kitchen paper, 10A, 10B...Crepe paper, 12...Perforation, 20...Paper tube (core), L2...Kitchen paper roll diameter (diameter), L3...Toilet roll Paper tube diameter (core diameter) , L1...width of kitchen paper roll, L4...cutting pitch, 10C...adhesive glue, L6...D front, L7...D back 40...embossed section, 50...non-embossed section, 11A, 11B...convex portions, 13A, 13B...concave portions, L8...width of non-embossed section.

Claims

1. A sheet having a basis weight of 15.0 to 23.0 g / m2 is laminated to two plies. A kitchen paper roll in which the kitchen paper having embossed unevenness is wound up, The roll length is 22 to 32 m, and the paper thickness is 1.5 mm / 5 sheets to 2.2 mm / 5 sheets. The sheets are laminated such that the tops of the convex portions formed by embossing face each other, and the sheet on the inner winding side has a convex portion formed on the outer surface of the laminate on the sheet on the inner winding side, in a portion corresponding to the convex portion formed by embossing on the sheet on the unwinding side. A kitchen paper roll characterized by:

2. A frame-like convex edge portion is formed on the outer surface of the laminate along the edge of a portion corresponding to the top of the convex portion when embossed on the inner surface of the sheet when it is wound. The kitchen paper roll according to claim 1.

3. 2. The kitchen paper roll according to claim 1, wherein the depth of the recesses in the unwinding surface sheet (D-surface) is 0.060 to 0.765 mm.

4. 2. The kitchen paper roll according to claim 1, wherein the height (H back) of the portion of the inner winding sheet that is convex toward the outer laminate surface is 0.060 μm to 0.250 μm.

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