Kitchen roll towel products

Abstract

To provide kitchen towel roll products that can satisfy both water absorption property and a wipe-off performance at high levels, and have a good tactile feel when used, packaged with excellent aesthetic properties.SOLUTION: A kitchen roll product 1 comprises: a kitchen roll towel 2 obtained by winding a sheet-like kitchen towel 11x which is a 2-ply laminate in a roll shape; and a packaging film 20 for packaging the kitchen roll towel. The kitchen roll product has an uneven pattern derived from a paper machine imparted between a head box of the paper machine and an entrance of a Yankee dryer, wherein the basis weight of the kitchen towel 11x is 32 g / m2 or more and 65 g / m2 or less, the water absorption of the kitchen towel 11x is 155 g / cm2 or more and 520 g / cm2 or less, the roll density is 0.04 g / cm3 or more and 0.15 g / cm3 or less, and is a caramel package of one or a plurality of rolls by the packaging film 20.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to kitchen roll towel products. [Background technology]

[0002] Kitchen towels are widely used for cleaning kitchen appliances such as microwave ovens and stoves, draining and wiping dishes, removing moisture from raw vegetables, meat, fish, and other ingredients, and draining oil from fried foods, and these uses require sufficient water and oil absorption. To address this, bulky papermaking techniques have been developed to increase the water and oil absorption of kitchen towels (Patent Documents 1 and 2). However, when bulky kitchen towels are wound into rolls, the rolls tend to loosen easily. Packaging loosely wound rolls can result in poor sealing and scorching (holes caused by burning), reducing the aesthetic appeal of the packaging.

[0003] On the other hand, if the roll is wound tightly, poor sealing during packaging and a decrease in the decorativeness of the package are less likely to occur, but the paper is crushed, reducing water absorbency, and the benefits of bulky papermaking technology are not obtained. Furthermore, by making the basis weight of the kitchen towel excessively high and winding it tightly, it is possible to achieve both decorative packaging and water absorbency, but this leads to problems such as increased costs and the paper becoming stiff, resulting in a decrease in wiping ability. Therefore, there is a demand for a kitchen roll towel product that is easy to use and has excellent decorative properties as a product, and is made by wrapping kitchen towels in a roll and packaging them. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 5373208 [Patent Document 2] Special Publication No. 2011-506780 Summary of the Invention [Problem to be solved by the invention]

[0005] To provide a kitchen roll towel product in which a roll of kitchen towels having both high levels of water absorbency and wiping properties and a good feel when used is packaged with excellent decorative properties. [Means for solving the problem]

[0006] As a preferred embodiment, the present invention provides the following (1) to (3) (6) The Company offers kitchen roll towel products. (1) A kitchen roll towel product comprising a kitchen roll towel in which a sheet-shaped kitchen towel that is a two-ply laminate is wound into a roll, and a packaging film for packaging the kitchen roll towel, The kitchen towel is The kitchen towel has a paper machine-derived uneven pattern provided between the head box of the paper machine and the inlet of the Yankee dryer, and the basis weight of the towel is 32 g / m 2 More than 65g / m 2 The water absorption capacity of the kitchen towel is 155g / m 2 Over 520g / m 2 Below, roll density is 0.04 g / cm 3 More than 0.15g / cm 3 is as follows: The specific volume of the kitchen towel is 6 g / cm 3 More than 16g / cm 3 The roll length of the kitchen roll towel is 20 m or more and 50 m or less, and the roll diameter of one roll of the kitchen roll towel is 113 mm or more and 200 mm or less, The kitchen roll towel product is a caramel-wrapped product of a plurality of rolls using the packaging film. (2) The kitchen roll towel further has a plurality of perforations arranged at predetermined intervals in the length direction and extending in the width direction for cutting the kitchen towel in the width direction, and the area of ​​the kitchen towel enclosed by two adjacent perforations in the length direction is 0.02 m 2 More than 0.10m 2 The kitchen roll towel products listed above in (1) are as follows: (3) The kitchen towel further has an embossed pattern different from the uneven pattern, in addition to the uneven pattern derived from the paper machine, and the size of the embossed pattern is 1 mm2 Over 40mm 2 The depth of the embossment itself is 0.10 mm or more and 0.80 mm or less, as specified in (1) above. or (2) Kitchen roll towel products. (4) The embossing pattern includes a plurality of the embossed units, and each of the embossed units has a unit area of ​​100 cm 2 The number of pieces per unit is between 20 and 1800. (3) Kitchen roll towel products. (5) The packaging film has heat sealability. (4) Any kitchen roll towel product. (6) The thickness of the packaging film is 15 μm or more and 40 μm or less, (5) Kitchen roll towel products. [Effects of the Invention]

[0007] According to the present invention, it is possible to provide a kitchen roll towel product in which a roll of kitchen towels that combines high levels of water absorbency and wiping properties and feels good to the touch when used is packaged with excellent cosmetic properties. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a perspective view schematically illustrating the external configuration of a kitchen roll towel product according to a first embodiment of the present invention. [Figure 2] 2 is a perspective view showing a schematic view of the appearance of a roll provided in the kitchen roll towel product of the first embodiment shown in FIG. 1.

[0023] FIG. [Figure 3] FIG. 2 is a diagram showing how to determine the embossed area of ​​the kitchen towel provided in the kitchen roll towel product of the first embodiment shown in FIG. 1. [Figure 4] FIG. 1 is a diagram showing a height profile on the XY plane as observed by a microscope using shading. [Figure 5] 1 is a graph showing a height profile on an XY plane obtained by a microscope. [Figure 6] FIG. 10 is a diagram showing how to determine the depth of an embossment having an area of ​​1 mm2 or more and 40 mm2 or less. [Figure 7] FIG. 2 is a diagram showing a method for measuring the water absorption of the kitchen towel provided in the kitchen roll towel product of the first embodiment shown in FIG. 1. [Figure 8] 2 is a diagram showing a part of a papermaking process for the kitchen towel provided in the kitchen roll towel product of the first embodiment shown in FIG. 1.

[0023] FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] The kitchen roll towel product of this embodiment will be described in detail below with reference to the drawings. Fig. 1 is a perspective view showing the external configuration of a kitchen roll towel product 1 of the first embodiment. Fig. 2 is a perspective view showing a schematic external view of a kitchen roll towel (roll) 2 provided in the kitchen roll towel product 1 shown in Fig. 1. Fig. 3 is a diagram showing how to determine the embossed area of ​​the kitchen towel provided in the kitchen roll towel product 1 shown in Fig. 1. Fig. 4 is a diagram showing the height profile on the XY plane as observed by a microscope in shades of gray. Fig. 5 is a graph showing the height profile on the XY plane as observed by a microscope. Fig. 6 is a diagram showing how to determine the embossed area of ​​the kitchen towel provided in the kitchen roll towel product 1 shown in Fig. 1. 2 Over 40mm 2 Fig. 7 is a diagram showing how to determine the depth of the following embossing units. Fig. 7 is a diagram showing a method for measuring the water absorption of the kitchen towel provided in the kitchen roll towel product 1 shown in Fig. 1. Fig. 8 is a diagram showing part of the papermaking process for the kitchen towel provided in the kitchen roll towel product 1 shown in Fig. 1.

[0010] (Kitchen roll towel products) As shown in Figures 1 and 2, the kitchen roll towel product 1 of this embodiment is a two-ply laminate, and is a sheet-like kitchen towel 11x (hereinafter also referred to as "kitchen towel sheet 11x") that has a textured pattern derived from a paper machine and has a basis weight and water absorption within a predetermined range. The sheet-like kitchen towel 11x is wound around a core 10 such as a paper tube or a plastic tube to form a kitchen roll towel 2 (hereinafter also simply referred to as "roll 2"), and two of the kitchen roll towels are aligned lengthwise and placed side by side in a packaging film 20 to form a caramel package.

[0011] Here, the uneven pattern derived from the papermaking machine refers to an uneven pattern that is automatically imparted between the head box of the papermaking machine and the entrance to the Yankee dryer. The kitchen roll towel product 1 of this embodiment is a package of two kitchen roll towels 2, but is not limited to this and one or more may be packaged. When more than one is packaged, two or three are preferred from the viewpoint of the aesthetic appeal of the package. By caramel-wrapping the roll of kitchen roll towels 2, sealing defects and scorch (holes caused by burning) are less likely to occur, significantly improving the aesthetic appeal of the package. Furthermore, the caramel packaging provides excellent strength and ease of opening.

[0012] The outer diameter D1 of the core 10 of the roll 2 is not particularly limited, but from the viewpoint of facilitating adjustment of the winding density of the roll 2 and the handling of the roll 2 during manufacturing, it is preferably 35 mm or more and 45 mm or less, more preferably 37 mm or more and 42 mm or less. Hereinafter, of the surfaces of the kitchen towel sheet 11x, the surface facing the outside of the roll 2 will be referred to as the roll surface 11a, and the surface in contact with or facing the core 20 of the roll 2 will be referred to as the roll back surface 11b.

[0013] The kitchen towel sheet 11x of this embodiment is a two-ply laminate. In the kitchen towel sheet 11x, an adhesive layer may be provided between the plies to prevent peeling of the plies. The adhesive layer may be provided over the entire surface between the plies, or may be provided only on a portion of the surface. As the adhesive, any known adhesive that does not affect the water absorption or texture of the kitchen towel sheet can be used without any particular limitation, and examples thereof include glue.

[0014] In this embodiment, the basis weight of the kitchen towel sheet 11x is 32 g / m 2 More than 65g / m 2 Less than 39 g / m 2 More than 63g / m 2 or less, and more preferably 47 g / m 2 More than 55g / m 2 The basis weight is 32 g / m 2 If the basis weight is less than 65 g / m, the feel of the kitchen towel sheet 11x during use will be reduced. 2 If the weight exceeds this, the kitchen towel sheet will become hard and will not conform to the shape of the object being wiped, resulting in a decrease in wiping performance. Basis weight is measured in accordance with JIS P 8124.

[0015] In this embodiment, the water absorption capacity of the kitchen towel sheet 11x is 155 g / m 2 Over 520g / m 2 Less than 180g, preferably m 2 Over 400g / m 2 It is preferably 200 g / m 2 More than 260g / m 2 Here, in the above units, "g" indicates the weight of absorbed water, m 2 " indicates the area of ​​the kitchen towel sheet that has absorbed water. When the kitchen towel sheet 11x is made into a size that is easy to handle, the water absorption capacity is 155g / m 2 If the water absorption capacity is less than 520g / m 2 If the absorbency exceeds this limit, the sheet cannot be used effectively and must be discarded even though it still has the capacity to absorb water.

[0016] The amount of water absorption is measured, for example, as follows. First, a two-ply kitchen towel sheet 11x is taken and cut using a square template with each piece measuring 7.6 cm (3 inches) to prepare a rectangular test piece with each side measuring 7.6 cm. The mass of the test piece before water absorption is measured using an electronic balance. The test piece is placed in the holder shown in Figure 7 (a jig that fixes three points on the test piece, made of a metal that does not absorb water).

[0017] Distilled water was poured into a commercially available tray to a depth of 2 cm, and the test specimen placed in the holder was immersed in the distilled water for 2 minutes. After immersion for 2 minutes, the test specimen and holder were removed from the distilled water, and a band 210 was attached to one corner 200d of the test specimen 200 as shown in Figure 7. The band 210 was made by cutting the same kitchen towel sheet 11x as the sample to be measured into a size of 2 mm wide x 15 mm long and attaching it to a section 6 mm from corner 200d toward the center of the test specimen. Next, the holder and test specimen 200 were hung from a rod placed in an empty water tank with corner 200a opposite corner 200d facing up, and the tank lid was closed and left for 10 minutes. The holder 220 and test specimen 200 were then removed from the water tank, the band 210 and holder 220 were removed, and the mass of the test specimen 200 was measured using an electronic balance. The mass change of the test specimen 200 before and after immersion in distilled water was used to determine the mass of the test specimen 1m. 2 Absorption of distilled water per g of paper (g of water / m 2 ) is calculated. Measurements are made five times for each sample and the average value is used. This measurement is performed in accordance with JIS P 8111, at a temperature of 23±1°C and humidity of 50±2%. The distilled water is also kept at 23±1°C.

[0018] The roll length of the kitchen towel sheet 11x of this embodiment is not particularly limited, but is preferably 20 to 50 m, more preferably 25 to 45 m, and even more preferably 30 to 40 m, from the viewpoints of the frequency of replacement of the roll 2 and the ease of handling the product 1. The thickness of the kitchen towel sheet 11x is also not particularly limited, but is preferably 1.6 mm / 10 plies to 4.7 mm / 10 plies, from the viewpoints of ease of adjusting the basis weight and water absorption, strength, etc. The paper thickness is measured using a thickness gauge (a dial thickness gauge "PEACOCK (registered trademark)" manufactured by Ozaki Seisakusho Co., Ltd.). Measurements are performed with a load of 3.7 kPa and a probe diameter of 30 mm. A sample is placed between the probe and the measuring table, and the gauge is read when the probe is lowered at a rate of 1 mm per second or less. Five sets of two-ply kitchen towel sheets 11x are stacked, resulting in a total of 10 sheets. Measurements are also performed 10 times, and the results are averaged. The basis weight, absorbency, thickness, etc. of the kitchen towel sheet 11x can be adjusted to fall within a predetermined range by, for example, appropriately adjusting the calendering conditions, embossing conditions, etc. of the base paper web.

[0019] The area of ​​each kitchen towel sheet 11x is preferably 0.02 m 2 More than 0.10m 2 Less than or equal to 0.03m, preferably 0.03m 2 Over 0.08m 2 or less, and more preferably 0.04 m 2 More than 0.06m 2 The following is the area. This area should not be set independently, but should be set in conjunction with the properties of the kitchen towel sheet 11x, particularly the basis weight and water absorption capacity. The kitchen roll towel 2 may have multiple perforations at predetermined intervals along its length. These perforations extend across the width of the kitchen towel sheet 11x and cut the kitchen towel sheet 11x across its width. Here, the area enclosed by two adjacent perforations along the length is defined as the area per sheet of kitchen towel sheet 11x. Furthermore, the kitchen towel sheet 11x may or may not have a print.

[0020] The area of ​​one 11x kitchen towel sheet is 0.02m 2 If it is less than 0.10m, workability and water absorption will decrease, wiping performance will decrease, and it will be difficult to wipe the object, or one sheet will not be able to wipe it sufficiently. 2 If the area exceeds this limit, the sheet cannot be used effectively, and sheet waste tends to occur. More specifically, it is sufficient if one sheet can wipe, for example, one plate, but if the sheet has a high water absorption capacity, for example, 0.8 sheets can wipe one plate, resulting in 0.2 sheets being wasted. If the area of ​​one sheet is reduced, the workability and water absorption capacity decrease, and wiping off water becomes insufficient. In this embodiment, by setting the optimal water absorption capacity and the like for a sheet area with good workability, a highly convenient kitchen towel sheet 11x can be created.

[0021] In this embodiment, the kitchen towel roll 2 formed by rolling up the kitchen towel sheet 11x has a roll density of 0.04 g / cm 3 More than 0.15g / cm 3 The roll density range is not set independently, but must be set according to the basis weight and water absorption of the kitchen towel sheet 11x. 3 If the roll density is less than 0.15 g / cm, the top and / or bottom surfaces may not be folded neatly when packaging the caramel, resulting in unbonded areas or scorching, which may impair the aesthetic appeal of the product. 3 If the roll diameter exceeds this value, the kitchen towel sheet may become crushed and the water absorption capacity may decrease if the roll diameter is constant.

[0022] The roll density can be measured, for example, by the following method. First, the roll volume is calculated by dividing the roll outer diameter ( Reel diameter It is expressed as {cross-sectional area of ​​the core outer diameter (DR) part} - (cross-sectional area of ​​the core outer diameter (DI) part)} x roll width (converted per 206 mm). For example, if the roll mass per 206 mm of roll width is 327 g, Reel diameterWhen the DR is 122 mm and the core outer diameter is 39 mm, the roll density is 327 g ÷ [{3.14 × (122 mm ÷ 2 ÷ 10) 2 -3.14×(39mm÷2÷10) 2}×(206mm÷10)]=0.15g / cm 3 If the kitchen roll towel 2 does not have a core, the diameter of the central hole is replaced with the core outer diameter DI.

[0023] Regarding the kitchen roll towel 2 of this embodiment, the roll diameter of the kitchen roll towel 2 per roll is preferably 113 mm to 200 mm, more preferably 135 mm to 180 mm, and even more preferably 140 mm to 160 mm. If the roll diameter is less than 113 mm, it tends to be difficult to achieve a good balance between the roll density and the water absorption capacity of the kitchen towel sheet 11x. If the roll diameter exceeds 200 mm, the roll density and therefore the decorativeness of the packaging tend to decrease.

[0024] The kitchen towel sheet 11x of this embodiment may have an embossed pattern in addition to the uneven pattern derived from the paper machine. Such an embossed pattern can be easily formed, for example, by embossing. The kitchen towel sheet 11x of this embodiment may also be formed by laminating two plies after embossing a single-ply sheet. When laminating two plies, it is preferable to use ply bond glue and apply the glue for bonding. By bonding the plies together in this way, the plies are more strongly bonded, and the kitchen towel sheet 11x is less likely to tear or peel off even when wet.

[0025] The ply on the surface 11a of the kitchen towel sheet 11x preferably has an embossed dot pattern. By providing the embossed dot pattern on the surface 11a, the embossed portions of the embossed pattern can be applied with glue for adhesion treatment, which makes it difficult for the ply of the kitchen towel sheet 11x to peel off and suppresses large fluctuations in the amount of water absorption.

[0026] (ply peel strength) The ply peel strength of the kitchen towel sheet 11x is preferably 0.05 N / 75 mm or more and 2.0 N / 75 mm or less, more preferably 0.10 N / 75 mm or more and 1.5 N / 100 mm or less, and even more preferably 0.15 N / 75 mm or more and 1.0 N / 75 mm or less. If the ply peel strength is less than 0.05 N / 75 mm, the plies will peel off from each other, making wiping difficult, and if the ply peel strength exceeds 2.0 N / 75 mm, the water absorption capacity of the kitchen towel sheet 1x will be poor.

[0027] The ply peel strength was measured in accordance with the tensile test method of JIS P 8113 using a tensile testing machine (STB-1225S, manufactured by A&D Co., Ltd.) under the standard conditions specified in JIS P 8111. First, a test piece measuring 75 mm in the width direction and 200 mm in the machine direction was taken from a sample of kitchen towel sheet 11x. Next, the ply was peeled 35 mm in the machine direction. One side of the peeled ply was clamped 15 mm in the machine direction between upper clamps (75 mm wide). The other ply was also clamped 15 mm in the machine direction between lower clamps (75 mm wide). The clamp pitch (spacing) was 20 mm. Next, the specimen was pulled (peeled) at a pulling speed of 100 mm / min, and strength data was collected. Strength data is obtained every 20 μm, and the data from 40 mm to 150 mm (measurement length 110 mm) after the start of measurement is averaged to obtain the peel strength (N / 75 mm). However, if the perforation is included in the distance from 40 mm to 150 mm after the start of measurement, the distance after the start of measurement can be shortened from 40 mm to, for example, 90 mm (measurement length 50 mm) as long as it does not include the perforation.

[0028] In the embossed pattern, the size is 1 mm 2 Over 40mm 2 An embossment with the following area is considered a single embossment: 100cm2 of unit area in the embossing pattern 2The number of embossed units per unit area is not particularly limited, but is preferably 20 to 1800, more preferably 50 to 1000, and even more preferably 80 to 500. If the number of embossed units is less than 20, the plies tend to peel off easily in the case of a kitchen towel sheet 11x with good water absorption such as that of this embodiment. If the number of embossed units exceeds 1800, the kitchen towel sheet 11x tends to be crushed, resulting in a decrease in water absorption. Furthermore, the shape of the embossed units can be any shape, including circular, oval, rectangular, square, floral, etc., without any particular limitation.

[0029] In addition, the embossed pattern has a size of 1 mm. 2 Over 40mm 2 The depth of the embossed unit, which is the area below, is preferably 0.10 mm to 0.80 mm, more preferably 0.25 mm to 0.67 mm, and even more preferably 0.35 mm to 0.55 mm. If the depth of the embossed unit of kitchen roll towel 11x is less than 0.10 mm, the water absorption capacity of kitchen towel sheet 11x tends to decrease and the feel during use tends to be inferior, while if it exceeds 0.80 mm, kitchen towel sheet 11x tends to become bulky, the roll density tends to decrease, and the decorativeness of the package tends to decrease.

[0030] The area and depth of the embossment are measured using a microscope. The microscope used is a Keyence One-Shot 3D Measuring Macroscope VR-3100. The microscope image observation, measurement, and image analysis software can be the VR-H1A. The measurement conditions are a magnification of 12x and a field of view of 24mm x 18mm. The measurement magnification and field of view can be changed as appropriate depending on the desired size of the embossment.

[0031] As shown in Figure 3, the area of ​​the embossment is calculated by measuring the length a of the longest part of the periphery fr of the embossment and the length b of the longest part in the direction perpendicular to length a, and then calculating the area as a x b. Figure 4 shows a height profile on the XY plane taken with a microscope, with the height of the sheet surface represented by shading. The roughly elliptical areas in Figure 4 that are different in shading from the surrounding area represent individual embossments, and the length a of the longest part of one of these embossments can be visually identified. Of these, the area of ​​1 mm 2 Over 40mm 2 The following embossing units are 100cm 2 Count the number of pieces per piece.

[0032] The number of embossments is measured across the entire width of the sheet, from the entire area between two adjacent perforations in the longitudinal direction, at any 100cm 2 Select a part of the surface and measure it visually. 2 If you cannot select this area, measure the number of embossments on the measurable areas, excluding areas that cannot be measured due to knurling (edge ​​embossing), etc., and measure the number of embossments on 100cm 2 The number of embossments per unit is calculated.

[0033] Next, the area is 1 mm 2 Over 40mm 2 The embossing depth is measured for the following embossing units. The embossing depth is determined by measuring the height difference of the embossing using the microscope described above. First, a line segment AB is drawn as shown in Figure 4 to obtain the height profile shown in Figure 5. Note that line segment AB should be drawn so that it crosses the embossment. The height profile is a (measured) cross-sectional curve S that represents the unevenness of the actual sheet sample surface, but it also contains noise (steep peaks due to fiber clumps on the sheet surface, fiber whiskers, and fiber-free areas), and such noise peaks must be removed when calculating the height difference of the unevenness.

[0034] Then, as shown in Figure 6, a "contour curve" W is calculated from the cross-sectional curve S of the height profile. The difference between the average value of the bottoms P1 and P2 and the apex between the bottoms P1 and P2 is calculated and defined as the embossment depth D1. Similarly, the difference between the average value of the bottoms P2 and P3 and the apex between the bottoms P2 and P3 is calculated and defined as the embossment depth D2. Similarly, D3 is measured. Note that D1, D2, and D3 are measured at consecutive locations, as shown in Figure 6. This measurement is performed at 10 locations on the kitchen towel sheet 11x, and the average of the data from a total of 30 locations is defined as the embossment depth. Note that if the distance between the embosses (the distance between P1 and P2) is 1 cm or more, measurements are not performed at consecutive locations. Instead, the difference between the average value of the bottoms P1 and P2 and the apex between the bottoms P1 and P2 is calculated and defined as the embossment depth D1. Alternatively, D1 may be measured at 30 locations and the average value defined as the embossment depth.

[0035] The "profile curve" is a curve obtained by removing surface roughness components with wavelengths shorter than λc: 800 μm (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 using a low-pass filter. Note that if λc is set to be greater than the distance between adjacent embossments P1 and P2, or P2 and P3 (this is called the emboss pitch), there is a risk that the peaks will be recognized as noise, so λc is set to be less than the emboss pitch. For example, if the emboss pitch is 800 μm or less, λc is set to, for example, 250 μm.

[0036] When measuring the embossment, the measurement surface should be the front side. When selecting the embossment, measure from the outer end of the kitchen towel roll 1 (where you start using the kitchen towel sheet 1x) to a point that is 10% of the roll length of the kitchen towel roll 1. For example, if the roll length is 30m, measure from the end at 30m x 10% = 3m. Note that if the 10% portion of the roll length is at the perforation, measure the outer side of the perforation.

[0037] The ply on the back surface 1b of the kitchen towel sheet 11x is not particularly limited as to whether it has an embossed pattern, as long as it has a pattern of protrusions and recesses derived from the papermaking process that is different from the embossed pattern. It may be nested embossed, pin-to-pin embossed, or unembossed, but nested embossing or no embossing is preferred, and no embossing is more preferred.

[0038] As the packaging film 20, for example, a resin film having heat-sealing properties is used. The thickness of the packaging film is preferably 15 μm or more and 40 μm or less. If the thickness is less than 15 μm, scorching occurs during heat sealing, which tends to reduce the aesthetic appeal and cause the film to tear. If the thickness exceeds 40 μm, the ease of opening tends to decrease. The packaging film 20 is not particularly limited as long as it has heat-sealing properties, but for example, a polyethylene film is preferred.

[0039] In addition to the physical properties described above, the kitchen towel sheet 11x of this embodiment preferably has the following physical properties. (DMDT and DCDT) The dry machine direction tensile strength (DMDT) of the kitchen towel sheet 11x according to JIS P 8113 is preferably 5 N / 25 mm to 24 N / 25 mm, more preferably 8 N / 25 mm to 19 N / 25 mm, and even more preferably 10 N / 25 mm to 16 N / 25 mm, from the viewpoint of wiping performance, etc. The dry cross direction tensile strength (DCDT) is preferably 3 N / 25 mm to 19 N / 25 mm, more preferably 5 N / 25 mm to 14 N / 25 mm, and even more preferably 6 N / 25 mm to 12 N / 25 mm, from the viewpoint of wiping performance, etc. If the DMDT is less than 5 N / 25 mm or the DCDT is less than 3 N / 25 mm, the kitchen towel sheet 11x tends to tear easily when absorbing water, resulting in reduced wiping properties. If the DMDT exceeds 24 N / 25 mm or the DCDT exceeds 19 N / 25 mm, the density of the kitchen towel sheet 11x increases, and as the water absorption decreases, the wiping properties decrease or the sheet becomes hard, resulting in reduced wiping properties.

[0040] (WMDT and WCDT) The wet machine direction tensile strength (WMDT) of the kitchen towel sheet 11x based on the old JIS S 3104 is preferably 1.3 N / 25 mm to 7.0 N / 25 mm, more preferably 2.0 N / 25 mm to 6.0 N / 25 mm, and even more preferably 2.5 N / 25 mm to 5.0 N / 25 mm, from the viewpoint of wiping performance, etc. The wet cross direction tensile strength (WCDT) is preferably 0.7 N / 25 mm to 5.5 N / 25 mm, more preferably 1.0 N / 25 mm to 4.0 N / 25 mm, and even more preferably 1.8 N / 25 mm to 3.5 N / 25 mm, from the viewpoint of wiping performance, etc. If the WMDT is less than 1.3 N / 25 mm or the WCDT is less than 0.7 N / 25 mm, the kitchen towel sheet 1x tends to tear easily when absorbing water, resulting in poor wiping performance. If the WMDT exceeds 7.0 N / 25 mm or the WCDT exceeds 5.5 N / 25 mm, the density of the kitchen towel sheet 11x increases, and the wiping performance tends to decrease as the water absorption decreases, or the sheet becomes hard and the wiping performance tends to decrease.

[0041] (specific volume) The specific volume of the kitchen towel sheet 11x is preferably 6 cm 3 from the viewpoint of the feel during use. 3 / g or more 16cm 3 / g or less, more preferably 8cm 3 / g or more 14cm 3 / g or less, more preferably 9cm 3 / g or more 13cm 3 / g or less. The specific volume of the kitchen towel sheet 11x is 6cm 3 If the thickness is less than 16cm / g, the water absorption capacity and feel of the kitchen towel sheet 11x during use tend to decrease. 3 If the specific volume exceeds 1 / g, the kitchen towel sheet 11x becomes bulky, the feel during use deteriorates, and the improvement in water absorption capacity tends to be insufficient. Note that the specific volume is calculated by dividing the paper thickness per kitchen towel sheet 11x by the basis weight, and is expressed as the volume cm per unit g. 3The value is expressed as

[0042] (Method of manufacturing kitchen towel sheets and kitchen towel rolls) The kitchen towel sheet 11x and the kitchen roll towel 2 can be manufactured, for example, in the following order: (1) papermaking and creping, (2) embossing, and (3) roll winding. It is preferable not to use a through-air dryer technique in the manufacturing process. Each step will be described below.

[0043] In the papermaking process, a textured pattern derived from the papermaking process, different from the embossed pattern described above, is applied to the kitchen towel sheet 11x. This textured pattern further increases the water absorption capacity of the kitchen towel sheet 11x. Note that "textured from the papermaking process" means that the textured pattern is applied between the headbox of the papermaking machine and the entrance of the Yankee dryer during the papermaking process of the kitchen towel sheet 11x. Specifically, in part of the papermaking process shown in Figure 9, the textured pattern can be applied in the belt press unit 30, which is positioned between the dewatering roll 31 and the Yankee dryer 32. In the belt press unit 30, the wet paper 34 and the textured belt 33 (the textured belt 33 loops between the belt press unit 30 and the Yankee dryer 32) are pressed together to impart the textured pattern to the wet paper.

[0044] The uneven pattern can be changed as needed by changing the belt pattern (fine pattern, coarse pattern). Changing the uneven pattern will change the specific volume (paper thickness), but it is preferable to select a pattern that will bring the specific volume (paper thickness) of the base paper within the numerical range described below.

[0045] In this case, the basis weight of the two plies of base paper used to manufacture the kitchen towel sheet 11x is 33 g / m 2 More than 68g / m 2 Preferably, it is 39 g / m or less. 2 More than 63g / m 2 More preferably, it is 47 g / m or less. 2 More than 55g / m 2The paper thickness is preferably 1.3 mm / 10 sheets or more and 4.5 mm / 10 sheets or less, more preferably 1.7 mm / 10 sheets or more and 3.5 mm / 10 sheets or less, and even more preferably 2.0 mm / 10 sheets or more and 3.0 mm / 10 sheets or less. Furthermore, the specific volume is 6 cm 3 / g or more 16cm 3 / g or less, and 3 / g or more 15cm 3 / g or less is more preferable, and 3 / g or more 13cm 3 / g or less. In order to improve water absorption, the thickness of kitchen towel sheet 11x is preferably greater than the thickness of the base paper, and the specific volume of kitchen towel sheet 11x is preferably greater than the specific volume of the base paper.

[0046] One or more of the kitchen roll towels 2 thus obtained are arranged side by side in the width direction with their longitudinal directions aligned, and then caramel-wrapped in a wrapping film 20 according to a known method as shown in FIG.

[0047] It goes without saying that the present invention is not limited to the above-described embodiments, but covers various modifications and equivalents that fall within the spirit and scope of the present invention. [Example]

[0048] The kitchen roll towel products of Examples 1 to 25 and Comparative Examples 1 to 12 were manufactured through the following steps: (1) papermaking and creping, (2) embossing, (3) roll winding, and (4) caramel wrapping. Parameters were measured and sensory evaluations were conducted for all of the kitchen towel roll products of the above Examples and Comparative Examples. The results are shown in Tables 1 to 5. The kitchen towel sheets of Examples 1 to 25 and Comparative Examples 1 to 12 had uneven patterns derived from the papermaking machine.

[0049] The sensory evaluation was carried out by 20 monitors who selected "good" or "bad" for each evaluation item. The evaluation criteria were as follows: ◎, ○, and △ were considered to be acceptable. ◎: When 18 to 20 people answered "Good" ○: When 14 to 17 people answered "Good" △: When 10 to 13 people answered "Good" ×: When 6 to 9 people answered "Good" ××: When there are no "good" people or when there are 1 to 5 people

[0050] Each evaluation item will be explained below. <Water absorption per sheet (in each table, it is written as "Water absorption per sheet")> The monitors evaluated the amount of water remaining after using one sheet. <Can the sheets be used without waste? (In each table, this is referred to as "efficiency") The monitors used one sheet and evaluated whether they felt it was a waste to throw it away. <Cosmetic> The occurrence of scorch and unbonded areas was visually evaluated. <Film tear resistance (referred to as "tear resistance" in each table)> The products were evaluated for their resistance to tearing when displayed and carried by hand. <Openability> The ease of opening the film by tearing it with fingers or by making a hole in it was evaluated. <Wipeability> The ease of wiping was evaluated by the monitors when they used the product. <Tactile sensation when in use> The monitors evaluated the quality of the feel when using the product.

[0051] [Table 1]

[0052] [Table 2]

[0053]

Table 3

[0054]

Table 4

[0055] [Table 5]

[0056] From the above, it can be seen that according to the present invention, by setting the basis weight, water absorption capacity, sheet area, roll density of the kitchen roll towel roll (roll), thickness of the packaging film, etc. of the kitchen towel sheet within the ranges set forth in the claims, it is possible to achieve a high level of both water absorption and wiping properties, produce a kitchen towel that feels good to the touch when in use, and package the wound roll with excellent cosmetic properties to produce a commercial product. [Explanation of symbols]

[0057] 1. Kitchen roll towel products 2 kitchen roll towels 10 cores 20 Packaging film 11a surface 11b Back side 11x kitchen towel sheets 30 Belt press section 31 Dewatering roll 32 Yankee Dryer 33 Concave belt 34 Wet Paper 200 specimens 200a, 200d corner 210 Obi 220 Holder

Claims

1. A kitchen roll towel product comprising a kitchen roll towel in the form of a sheet-shaped kitchen towel that is a two-ply laminate wound into a roll, and a packaging film for packaging the kitchen roll towel, The kitchen towel has a paper machine-derived uneven pattern provided between the head box of the paper machine and the inlet of the Yankee dryer, The kitchen towel has a basis weight of 32 g / m ２ 65g / m or more ２ Hereinafter, the water absorption capacity of the kitchen towel is 155 g / m ２ More than 520g / m ２ Below, the roll density is 0.04 g / cm ３ 0.15g / cm or more ３ is as follows: The specific volume of the kitchen towel is 6 cm 3 / g or more and 16 cm 3 / g or less, The kitchen towel has an embossed pattern different from the uneven pattern derived from the paper machine, in addition to the uneven pattern, and the embossed pattern has an area of ​​1 mm 2 or more and 40 mm 2 or less, and the depth of each embossment is 0.10 mm or more and 0.80 mm or less; The roll length of the kitchen roll towel is 20 m or more and 50 m or less, The roll diameter of one roll of the kitchen roll towel is 113 mm or more and 200 mm or less, The kitchen roll towel product is a caramel-wrapped product of a plurality of rolls using the packaging film.

2. The kitchen roll towel further has a plurality of perforations that are provided at predetermined intervals in the length direction and extend in the width direction to cut the kitchen towel in the width direction, and the area of ​​the kitchen towel enclosed by two adjacent perforations in the length direction is 0.02 m ２ 0.10m or more ２ 2. The kitchen roll towel product of claim 1, wherein:

3. The embossing pattern includes a plurality of the embossed units, and each of the embossed units has a unit area of ​​100 cm ２ 2. The kitchen roll towel product according to claim 1, wherein the number of pieces per roll is 20 or more and 1800 or less.

4. The kitchen roll towel product according to any one of claims 1 to 3, wherein the packaging film has heat sealing properties.

5. The kitchen roll towel product according to any one of claims 1 to 4, wherein the thickness of the packaging film is 15 μm or more and 40 μm or less.

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