Kitchen roll towel product

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 Art

[0002] Kitchen towels are widely used, for example, for cleaning cooking appliances such as kitchens, microwave ovens, and stoves, draining and wiping dishes, removing moisture from ingredients such as raw vegetables, meat, and fish, and draining oil from fried foods. Therefore, sufficient water absorption and oil absorption are required for their use. For this reason, a bulky papermaking technique for increasing the water absorption and oil absorption of kitchen towels has been developed (Patent Documents 1 and 2). However, when a bulky kitchen towel is wound into a roll, there is a problem that the winding tends to loosen. When wrapping a roll with a loose winding, seal defects and scorch (holes due to burning) occur, and the cosmetic appearance of the package deteriorates.

[0003] On the other hand, when the winding of the roll is tightened, although seal defects during packaging and deterioration of the cosmetic appearance of the package are less likely to occur, the paper is crushed and the water absorption decreases, and the advantages of the bulky papermaking technique cannot be obtained. In addition, by excessively increasing the basis weight of the kitchen towel and making it a tight roll, it is possible to achieve both the cosmetic appearance of the package and water absorption, but there are problems such as an increase in cost and a decrease in the wiping property due to the hardening of the paper. Therefore, there is a demand for a kitchen roll towel product that is wound into a roll and packaged, has good usability, and is excellent in the cosmetic appearance as a product.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] An object of the present invention is to provide a kitchen roll towel product in which a kitchen roll towel roll having both high water absorption and wiping properties and a good touch during use is packaged with excellent cosmetic properties.

Means for Solving the Problems

[0006] The present invention provides, as a preferred embodiment, a kitchen roll towel product of the following (1) to (7). (1) A kitchen roll towel product comprising a kitchen roll towel obtained by winding a sheet-like kitchen towel, which is a two-ply laminate, in a roll shape, and a packaging film for packaging the kitchen roll towel, An adhesive layer is provided in at least a part between the plies of the two-ply laminate, and the kitchen towel is having an uneven pattern derived from a paper machine applied between the headbox of the paper machine and the Yankee dryer inlet, and the basis weight of the kitchen towel is 47 g / m 2 or more and 2 55 g / m , the water absorption of the kitchen towel is 155 g / m 2 or more and 520 g / m 2 or less, the roll density is 0.04 g / cm 3 or more and 0.15 g / cm 3 or less, and or less. The ply peel strength of the kitchen towel sheet is 0.05 N / 75 mm or more and 2.0 N / 75 mm or less. the kitchen roll towel product is a caramel package of one or more rolls by the packaging film. (2) The kitchen roll towel further has a plurality of perforations provided 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 surrounded by two adjacent perforations in the longitudinal direction is 0.02 m 2 or more and 0.10 m 2 or less. The kitchen roll towel product of (1) above. (3) The kitchen roll towel product of (1) or (2) above, wherein the winding diameter of one roll is 113 mm or more and 200 mm or less. (4) The kitchen towel further has an embossed pattern different from the uneven pattern, together with the uneven pattern derived from the paper-making machine, and the size in the embossed pattern is 1 mm 2 or more and 40 mm 2 or less, and the depth of a single emboss with an area of 0.10 mm or more and 0.80 mm or less is the kitchen roll towel product according to any one of (1) to (3) above. (5) The embossed pattern includes a plurality of the single embosses, and the number per 100 cm 2 of the unit area of the single emboss is 20 or more and 1800 or less, and the kitchen roll towel product according to (4) above. (6) The kitchen roll towel product according to any one of (1) to (5) above, wherein the packaging film has heat sealability. (7) The kitchen roll towel product according to any one of (1) to (6) above, wherein the thickness of the packaging film is 15 μm or more and 40 μm or less.

Effect 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 towel having both high water absorption and wiping property at a high level and a good touch during use is packaged with excellent cosmetic properties.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Embodiments for Carrying Out the Invention

[0009] The kitchen roll towel product of the present embodiment will be described in detail with reference to the following drawings. FIG. 1 is a perspective view showing the external configuration of a kitchen roll towel product 1 according to the first embodiment. FIG. 2 is a perspective view schematically showing the external appearance 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 obtain 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 X-Y plane by a microscope in shades. FIG. 5 is a graph showing the height profile on the X-Y plane by a microscope. FIG. 6 is an embossed unit with an area of 1 mm 2 or more and 40 mm 2 or less, showing how to obtain the depth. 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 a part of the papermaking process of the kitchen towel provided in the kitchen roll towel product 1 shown in FIG. 1.

[0010] (Kitchen roll towel product) As shown in FIGS. 1 and 2, the kitchen roll towel product 1 of the present embodiment is a two-ply laminate, has an uneven pattern derived from a paper-making machine, and is a sheet-like kitchen towel 11x (hereinafter also referred to as "kitchen towel sheet 11x") with a basis weight and water absorption in a predetermined range wound around a core 10 such as a paper tube or a plastic tube. Two kitchen roll towels 2 (hereinafter also simply referred to as "rolls 2") aligned in the longitudinal direction are caramel-wrapped with a packaging film 20 to form a caramel package.

[0011] Here, the uneven pattern derived from the paper-making machine is an uneven pattern automatically imparted between the headbox of the paper-making machine and the Yankee dryer inlet. The kitchen roll towel product 1 of the present embodiment packages two kitchen roll towels 2, but is not limited thereto, and one or a plurality of them may be packaged. In the case of a plurality, preferably two or three from the viewpoint of the aesthetics of the package, etc. By caramel-wrapping the roll, which is the kitchen roll towel 2, it is difficult for seal defects and scorch (holes due to burning) to occur, and the aesthetics of the package are significantly improved. Also, because it is caramel packaging, it is excellent in strength and peelability.

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

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

[0014] In this embodiment, the basis weight of the kitchen towel sheet 11x is 32 g / m 2 or more and 65 g / m 2 or less, preferably 39 g / m 2 or more and 63 g / m 2 or less, and more preferably 47 g / m 2 or more and 55 g / m 2 or less. If the basis weight is less than 32 g / m 2 , the touch feeling of the kitchen towel sheet 11x during use will deteriorate. If the basis weight exceeds 65 g / m 2 , the kitchen towel sheet becomes hard and does not follow the shape of the object, so the wiping property deteriorates. The basis weight is measured based on JIS P 8124.

[0015] In this embodiment, the water absorption of the kitchen towel sheet 11x is 155 g / m 2 or more and 520 g / m 2 or less, preferably 180 g / m 2 or more and 400 g / m 2 or less, and more preferably 200 g / m 2 or more and 260 g / m 2 or less. Here, in the above unit, "g" indicates the weight of the absorbed water, and " 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 with good handleability, if the water absorption is less than 155 g / m 2 , there may be a case where water cannot be sufficiently wiped with one sheet of the sheet, and if the water absorption exceeds 520 g / m 2 , the sheet cannot be effectively used up, and there is a remaining capacity to absorb water but it has to be discarded.

[0016] The measurement of water absorption is carried out as follows, for example. First, a kitchen towel sheet 11x stacked in two-ply is taken, and one piece is cut using a template in the shape of a square with a side length of 7.6 cm (3 inches) to produce a test piece in the form of a rectangle with a side length of 7.6 cm. The mass of the test piece before water absorption is measured using an electronic balance and set aside. The test piece is placed in the holder shown in Fig. 7 (a jig for fixing three points of the test piece, made of a metal that does not absorb moisture).

[0017] Pour 2 cm of distilled water into a commercially available vat, and immerse the test piece placed in the holder in the distilled water for 2 minutes. After 2 minutes of immersion, the test piece is taken out of the distilled water together with the holder, and as shown in Fig. 7, a strip 210 is attached to one corner 200d of the test piece 200. The strip 210 is cut from the same kitchen towel sheet 11x as the sample to be measured to a size of 2 mm in width × 15 mm in length, and attached to a portion 6 mm from the corner 200d of the test piece towards the center. Next, the holder and the test piece 200 are hung on a rod installed in an empty water tank with the corner 200a opposite to the corner 200d facing upwards, the lid of the water tank is closed, and left for 10 minutes. Then, the holder 220 and the test piece 200 are taken out of the water tank, the strip 210 and the holder 220 are removed, and the mass of the test piece 200 is measured using an electronic balance. From the change in the mass of the test piece 200 before and after immersion in distilled water, the amount of distilled water absorbed per 1 m of the test piece 2 (g of water / m of paper 2 ) is calculated. The measurement is performed 5 times for each sample, and the average value is adopted. Note that this measurement is carried out in accordance with JIS P 8111 method under the conditions of a temperature of 23 ± 1°C and a humidity of 50 ± 2%. Also, the distilled water is maintained at 23 ± 1°C.

[0018] Although the roll length of the kitchen towel sheet 11x of the present embodiment is not particularly limited, from the viewpoints of the replacement frequency of the roll 2, the ease of handling the product 1, etc., it is preferably 20 m or more and 50 m or less, more preferably 25 m or more and 45 m or less, still more preferably 30 m or more and 40 m or less. Further, although the thickness of the kitchen towel sheet 11x is not particularly limited, from the viewpoints of the ease of adjusting the basis weight and water absorption amount, strength, etc., it is preferably 1.6 mm / 10 plies or more and 4.7 mm / 10 plies or less. The paper thickness is measured using a thickness gauge (dial thickness gauge "PEACOCK (registered trademark)" manufactured by Ozaki Seisakusho Co., Ltd.). The measurement is carried out with a measurement load of 3.7 kPa and a measuring head diameter of 30 mm. A sample is placed between the measuring head and the measuring table, and the gauge is read when the measuring head is lowered at a speed of 1 mm or less per second. Five sets of the kitchen towel sheets 11x laminated in 2 plies are stacked and measured as 10 sheets. Further, the measurement is repeated 10 times and the measurement results are averaged. Incidentally, the basis weight, water absorption, thickness, etc. of the kitchen towel sheet 11x can be set within a predetermined range by appropriately adjusting, for example, the calendar conditions and embossing conditions of the base paper web.

[0019] In addition, the area per sheet of the kitchen towel sheet 11x is preferably 0.02 m 2 or more and 0.10 m 2 or less, more preferably 0.03 m 2 or more and 0.08 m 2 or less, and still more preferably 0.04 m 2 or more and 0.06 m 2 or less. This area is not set alone, but it is necessary to set it in combination with the characteristics of the kitchen towel sheet 11x, particularly the basis weight and water absorption amount. The kitchen roll towel 2 may be provided with a plurality of perforations at predetermined intervals in the length direction. These perforations extend in the width direction of the kitchen towel sheet 11x and cut the kitchen towel sheet 11x in the width direction. Here, the area surrounded by two adjacent perforations in the longitudinal direction is defined as the area per sheet of the kitchen towel sheet 11x. Further, the kitchen towel sheet 11x may or may not have a print.

[0020] The area per sheet of the kitchen towel sheet 11x is less than 0.02 m 2 If it is less, workability and water absorption decrease, wiping performance deteriorates, it becomes difficult to wipe the object to be wiped, and there is a tendency that it cannot be wiped sufficiently with one sheet, and if it exceeds 0.10 m 2 If it exceeds, the sheet cannot be effectively used up, and there is a tendency for loss of the sheet. More specifically, for example, it should be possible to wipe one dish with one sheet, but if the water absorption of the sheet is high, for example, one dish can be wiped with 0.8 sheets of the sheet, and at this time 0.2 sheets of the sheet are wasted. If the area of one sheet is reduced, workability and water absorption decrease, and wiping of water becomes insufficient. In this embodiment, by setting the optimal water absorption amount and the like when the sheet area with good workability is used, a highly convenient kitchen towel sheet 11x can be obtained.

[0021] In this embodiment, in the kitchen towel roll 2 in which the kitchen towel sheet 11x is wound in a roll shape, the roll density is 0.04 g / cm 3 or more and 0.15 g / cm 3 or less. Instead of setting the roll density range alone, it is necessary to set the roll density according to the basis weight and water absorption of the kitchen towel sheet 11x. If the roll density is less than 0.04 g / cm 3 When caramel packaging, the top surface and / or the bottom surface cannot be neatly folded, and unbonded parts may occur or scorching may occur, etc., and the cosmetic property may be impaired. If the roll density exceeds 0.15 g / cm 3 If the roll diameter is constant, the kitchen towel sheet may be crushed and the water absorption may decrease.

[0022] The roll density can be measured, for example, by the following method. First, the roll volume is expressed as {{cross-sectional area of the outer diameter ( Roll diameter DR) part of the roll}-(cross-sectional area of the core outer diameter DI part)}×roll width (converted to per 206 mm). For example, the roll mass per 206 mm of roll width is 327 g, Roll diameterWhen the outer diameter of the DR is 122 mm and the outer diameter of the core is 39 mm, the roll density = 327 g ÷ [{3.14 × (122 mm ÷ 2 ÷ 10) 2 - 3.14 × (39 mm ÷ 2 ÷ 10) 2} × (206 mm ÷ 10)] = 0.15 g / cm 3 This is the case. When there is no core in the kitchen roll towel 2, the diameter of the central hole is replaced with the outer diameter DI of the core.

[0023] Regarding the kitchen roll towel 2 of the present embodiment, the winding diameter per roll of the kitchen roll towel 2 is preferably 113 mm or more and 200 mm or less, more preferably 135 mm or more and 180 mm or less, and still more preferably 140 mm or more and 160 mm or less. When the winding diameter is less than 113 mm, it is difficult to adjust the roll density and the water absorption amount of the kitchen towel sheet 11x well within a good range. When the winding diameter exceeds 200 mm, the roll density and thus the cosmetic appearance of the package tend to decrease.

[0024] Regarding the kitchen towel sheet 11x of the present embodiment, the kitchen towel sheet 11x may have an embossed pattern in addition to the uneven pattern derived from the paper machine. Such an embossed pattern can be easily formed by, for example, embossing. Also, the kitchen towel sheet 11x of the present embodiment may be a sheet obtained by laminating 2 plies after embossing a 1-ply sheet. When laminating 2 plies, it is preferable to use a ply bond glue (paste) and apply the glue for adhesion treatment. By adhering in this way to make 2 plies, the adhesion of the plies becomes stronger, and the kitchen towel sheet 11x is less likely to peel off the plies and is less likely to tear even when wet with water.

[0025] Preferably, a dot-shaped embossed pattern is applied to the ply of the surface 11a of the kitchen towel sheet 11x. By applying the dot-shaped embossed pattern to the surface 1a, glue can be applied to the embossed part of the embossed pattern for adhesion treatment, making it less likely for the ply of the kitchen towel sheet 11x to peel off and suppressing large fluctuations in the water absorption amount.

[0026] (Peeling Strength) The peeling 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 still more preferably 0.15 N / 75 mm or more and 1.0 N / 75 mm or less. If the peeling strength is less than 0.05 N / 75 mm, the plies will peel off each other and it will be difficult to wipe. If the peeling strength exceeds 2.0 N / 75 mm, the water absorption of the kitchen towel sheet 1x will be inferior.

[0027] The method for measuring the peeling strength is carried out under the standard conditions specified in JIS P 8111 using a tensile testing machine (STB-1225S, manufactured by A&D Company, Limited) in accordance with the tensile test method of JIS P 8113. First, a test piece with a width of 75 mm in the width direction and 200 mm in the flow direction is taken from a sample of the kitchen towel sheet 11x. Next, the ply is peeled 35 mm in the flow direction. One side of the peeled ply is fixed by sandwiching it 15 mm in the flow direction with the upper gripper (width 75 mm). Also, the other ply is fixed by sandwiching it 15 mm in the flow direction with the lower gripper (width 75 mm). The pitch (interval) of the grippers is 20 mm. Next, the ply is pulled (peeled) under the condition of a pulling speed of 100 mm / min, and strength data is collected. The strength data is acquired every 20 μm, and the data from 40 mm to 150 mm (measurement length 110 mm) after the start of measurement is averaged, and this is taken as the peeling strength (N / 75 mm). However, if there are perforations from 40 mm to 150 mm after the start of measurement, the distance after the start of measurement can be shortened to a range without perforations, for example, from 40 mm to 90 mm (measurement length 50 mm).

[0028] In the embossed pattern, an emboss with an area of 1 mm 2 or more and 40 mm 2 or less is regarded as an emboss unit. The emboss unit area in the embossed pattern is 100 cm 2The number of individual embossments per unit area is not particularly limited, but is preferably 20 or more and 1800 or less, more preferably 50 or more and 1000 or less, and still more preferably 80 or more and 500 or less. If the number of individual embossments is less than 20, in the case of the kitchen towel sheet 11x with good water absorption as in this embodiment, the plies tend to be easily peeled off. If the number of individual embossments exceeds 1800, the kitchen towel sheet 11x tends to be crushed and the water absorption amount tends to decrease. Also, the shape of the individual embossments can be used without particular limitation, such as circular, elliptical, rectangular, square, floral pattern, etc.

[0029] Also, in the emboss pattern, the depth of an individual embossment having an area of 1 mm 2 or more and 40 mm 2 or less is preferably 0.10 mm or more and 0.80 mm or less, more preferably 0.25 mm or more and 0.67 mm or less, and still more preferably 0.35 mm or more and 0.55 mm or less. If the depth of the emboss unit of the kitchen roll towel 11x is less than 0.10 mm, the water absorption amount of the kitchen towel sheet 11x tends to decrease or the tactile sensation during use tends to be inferior. If it exceeds 0.80 mm, the kitchen towel sheet 11x tends to become bulky, the roll density decreases, and the cosmetic appearance of the packaging tends to decrease.

[0030] The area and depth 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 is used. As the image observation / measurement / image analysis software for the microscope, the product name "VR-H1A" can be used. Also, the measurement conditions are measurement under the conditions of a magnification of 12 times and a field area of 24 mm × 18 mm. The measurement magnification and the field area may be appropriately changed depending on the size of the emboss to be obtained.

[0031] Incidentally, as shown in Fig. 3, for the area of the emboss, the length a of the longest part of the periphery fr of the emboss and the length b of the longest part in the direction perpendicular to the length a are measured, and a×b is obtained as the area. Fig. 4 shows the height profile on the X-Y plane by a microscope, and the height of the sheet surface is represented by shading. The substantially elliptical part with shading different from the periphery in Fig. 4 indicates individual embosses, and the length a of the longest part of one of these embosses can be visually distinguished. Among these, for emboss units with an area of 1 mm 2 or more and 40 mm 2 or less, the number per 100 cm 2 is counted.

[0032] For the measurement of the number of embosses, from the entire area between two adjacent perforations in the longitudinal direction across the entire width of the sheet, an arbitrary 100 cm 2 portion is selected and measured visually. Incidentally, when a portion of 100 cm 2 cannot be selected, such as when knurling (edge emboss) processing is performed, the number of embosses is measured for the measurable portions excluding the portions that cannot be measured by knurling (edge emboss) processing or the like, and converted to the number of embosses per 100 cm 2 as a result.

[0033] Next, for emboss units with an area of 1 mm 2 or more and 40 mm 2 or less, the depth of the emboss is measured. The depth of the emboss is obtained by measuring the height difference of the above-mentioned emboss using the above microscope. First, a line segment AB is drawn as shown in Fig. 4 to obtain the height profile of Fig. 5. Note that the line segment AB may be drawn so as to cross the emboss. The height profile is a (measured) cross-sectional curve S representing the unevenness of the actual sample surface of the sheet, but it also includes noise (such as fiber lumps on the surface of the sheet, fibers extending in a whisker shape, or steep peaks caused by fiber-free parts). When calculating the height difference of the unevenness, it is necessary to remove such noise peaks.

[0034] Then, as shown in FIG. 6, a "contour curve" W is calculated from the cross-sectional curve S of the height profile. Among this contour curve W, the average value of the bottoms P1 and P2 and the difference between the top part sandwiched between the bottoms P1 and P2 are obtained, and this is taken as the embossing depth D1. Similarly, the average value of the bottoms P2 and P3 and the difference between the top part sandwiched between the bottoms P2 and P3 are obtained, and this is taken as the embossing depth D2. Similarly, D3 is measured. Note that D1, D2, and D3 are measured at continuous locations as shown in FIG. 6. This measurement is performed at 10 locations on the kitchen towel sheet 11x, and the average value of the data at a total of 30 locations is taken as the embossing depth. Note that when the distance between embossings (the distance between P1 and P2) is more than 1 cm apart, instead of measuring at continuous locations, the average value of the bottoms P1 and P2 and the difference between the top part sandwiched between the bottoms P1 and P2 are obtained, and this is taken as the embossing depth D1. D1 can be measured at 30 locations, and the average value can be taken as the embossing depth.

[0035] Note that the "contour curve" is a curve obtained by removing, by a low-pass filter, 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. Note that if λc is set to be equal to or greater than the distance between adjacent embossings P1 and P2, P2 and P3 (this is called the embossing pitch), there is a possibility that the peak will be recognized as noise, so λc is set to be less than the embossing pitch. For example, when the embossing pitch is 800 μm or less, for example, λc is set to 250 μm.

[0036] When measuring the embossing, the measurement surface is the surface side. Also, when selecting the embossing, it is measured at a portion corresponding to 10% of the roll length of the kitchen towel roll 1 starting from the outer end of the outer roll of the kitchen towel roll 1 (the position where the use of the kitchen towel sheet 1x begins). For example, when the roll length is 30 m, it is measured at a portion 30 m × 10% = 3 m from the end. Note that when the portion corresponding to 10% of the roll length hits the perforation, the outer roll side of the perforation is measured.

[0037] The ply on the back surface 1b of the kitchen towel sheet 11x may have an uneven pattern derived from a papermaking process different from the embossed pattern, and there are no particular restrictions regarding whether or not an embossed pattern is applied. Nested embossing or pin-to-pin embossing may be applied, or embossing may not be applied, 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-sealability 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 tends to occur during heat sealing, resulting in a decrease in cosmeticalness or breakage of the film. Also, if the thickness exceeds 40 μm, the peelability tends to decrease. The packaging film 20 is not particularly limited as long as it has heat-sealability, but for example, a polyethylene film is preferred.

[0039] In addition to the above-described physical properties, the kitchen towel sheet 11x of the present embodiment preferably has the following physical properties. (DMDT and DCDT) For the 11x kitchen towel sheet, the dry machine direction tensile strength (DMDT) based on JIS P 8113 is preferably 5 N / 25 mm or more and 24 N / 25 mm or less, more preferably 8 N / 25 mm or more and 19 N / 25 mm or less, and still more preferably 10 N / 25 mm or more and 16 N / 25 mm or less, from the viewpoint of wiping performance and the like. Also, the dry cross direction tensile strength (DCDT) is preferably 3 N / 25 mm or more and 19 N / 25 mm or less, more preferably 5 N / 25 mm or more and 14 N / 25 mm or less, and still more preferably 6 N / 25 mm or more and 12 N / 25 mm or less, from the viewpoint of wiping performance and the like. If DMDT is less than 5 N / 25 mm or DCDT is less than 3 N / 25 mm, the 11x kitchen towel sheet tends to be easily torn when absorbing water and the wiping performance tends to deteriorate. If DMDT exceeds 24 N / 25 mm or DCDT exceeds 19 N / 25 mm, the density of the 11x kitchen towel sheet becomes high, and the wiping performance tends to deteriorate with the decrease in water absorption or the sheet becomes hard and the wiping performance tends to deteriorate.

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

[0041] (Specific volume) The specific volume of the 11x kitchen towel sheet is preferably 6 cm 3 / g or more and 16 cm 3 / g or less, more preferably 8 cm 3 / g or more and 14 cm 3 / g or less, and still more preferably 9 cm 3 / g or more and 13 cm 3 / g or less, from the viewpoint of the touch feeling during use and the like. If the specific volume of the 11x kitchen towel sheet is less than 6 cm 3 / g, the water absorption amount and the touch feeling during use of the 11x kitchen towel sheet tend to decrease. If it exceeds 16 cm 3 / g, the 11x kitchen towel sheet becomes bulky, the touch feeling during use decreases, and the improvement of the water absorption amount also tends to be insufficient. The specific volume is obtained by dividing the paper thickness per 11x kitchen towel sheet by the basis weight, and is the volume in cm 3It is the value represented by

[0042] (Method for manufacturing kitchen towel sheet and kitchen towel roll) The kitchen towel sheet 11x and the kitchen roll towel 2 can be manufactured, for example, in the order of (1) papermaking and creping, (2) embossing, and (3) roll winding. In the manufacturing process, it is preferable not to use the through-air dryer technology. Hereinafter, each process will be described.

[0043] In the papermaking process, an uneven pattern derived from the papermaking process different from the above-described embossing pattern is applied to the kitchen towel sheet 11x. By having this uneven pattern, the water absorption amount of the kitchen towel sheet 11x becomes even higher. Note that being derived from the papermaking process means being applied between the headbox of the paper machine and the inlet of the Yankee dryer in the papermaking process of the kitchen towel sheet 1x. Specifically, in a part of the papermaking process shown in FIG. 9, unevenness can be imparted at the belt press section 30 disposed between the dehydration roll 31 and the Yankee dryer 32. At the belt press section 30, an uneven pattern can be imparted to the wet paper by pressing the wet paper 34 and the uneven belt 33 (the uneven belt 33 loops around the belt press section 30 and the Yankee dryer 32) together.

[0044] Also, the uneven pattern can be appropriately changed by changing the pattern of the belt (fine pattern, rough pattern). When the uneven pattern is changed, the specific volume (paper thickness) changes, but it is preferable to select a pattern such that the specific volume (paper thickness) of the base paper is within the numerical range described later.

[0045] At this time, the basis weight of 2-ply of the base paper used for manufacturing the kitchen towel sheet 11x is preferably 33 g / m 2 or more and 68 g / m 2 or less, more preferably 39 g / m 2 or more and 63 g / m 2 or less, and most preferably 47 g / m 2 or more and 55 g / m 2It is more preferable that the following conditions are met. The 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 still more preferably 2.0 mm / 10 sheets or more and 3.0 mm / 10 sheets or less. Further, the specific volume is preferably 6 cm 3 / g or more and 16 cm 3 / g or less, more preferably 7 cm 3 / g or more and 15 cm 3 / g or less, and still more preferably 9 cm 3 / g or more and 13 cm 3 / g or less. Also, for the kitchen towel sheet 11x, in order to improve water absorption, it is preferable that its thickness is higher than that of the base paper, and for the specific volume of the kitchen towel sheet 11x, in order to improve water absorption, it is preferable that it is higher than that of the base paper.

[0046] One or more of the thus obtained kitchen roll towels are arranged with their longitudinal directions aligned and are juxtaposed in the width direction, and are caramel-wrapped as shown in FIG. 1 by a packaging film 20 according to a known method.

[0047] The present invention is not limited to the above-described embodiments, and it goes without saying that the present invention extends to various modifications and equivalents included in the spirit and scope of the present invention.

Examples

[0048] (1) Through the steps of papermaking, creping, (2) embossing, (3) roll winding, and (4) caramel packaging, kitchen roll towel products of Examples 1 to 25 and Comparative Examples 1 to 12 were manufactured. For all of the above Examples and the kitchen towel roll products of the Comparative Examples, each parameter was measured and a sensory evaluation was conducted. 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 an uneven pattern derived from a paper machine.

[0049] The sensory evaluation was conducted in such a way that 20 monitors selected either "good" or "bad" for each evaluation item. The evaluation criteria are as follows. ◎, ○, and △ were considered passing. ◎: When 18 or more but 20 or fewer people selected "good" ○: When 14 or more but 17 or fewer people selected "good" △: When 10 or more but 13 or fewer people selected "good" ×: When 6 or more but 9 or fewer people selected "good" ××: When none or 1 to 5 people selected "good"

[0050] An explanation will be given for each evaluation item. <Water absorption per sheet (indicated as "Water absorption / sheet" in each table)> The monitors evaluated the amount of water remaining after wiping when using one sheet. <Whether the sheet can be used efficiently (indicated as "Efficiency" in each table)> The monitors evaluated whether they felt it was a waste when using and discarding one sheet. <Cosmetic appearance> Visual evaluation was conducted for scorching and the occurrence of unbonded parts. <Film tear resistance (indicated as "Tear resistance" in each table)> The tear resistance of the product when handling and carrying it by hand was evaluated. <Opening property> The ease of opening the film by tearing it with a finger or making a hole was evaluated. <Wiping property> The ease of the wiping operation when the monitors used it was evaluated. <Tactile sensation during use> The monitors evaluated the goodness of the tactile sensation when using it.

[0051]

Table 1

[0052]

Table 2

[0053]

Table 3

[0054]

Table 4

[0055]

Table 5

[0056] As described above, according to the present invention, by setting the basis weight, water absorption, sheet area of the kitchen towel sheet, roll density of the kitchen roll towel (roll), thickness of the packaging film, etc. within the ranges described in the claims, it is possible to achieve both high water absorption and wiping ability at a high level, and a kitchen towel with a good touch during use can be wound up into a roll, packaged with excellent cosmetic properties, and commercialized.

Explanation of Reference Numerals

[0057] 1 Kitchen roll towel product 2 Kitchen roll towel 10 Core 20 Packaging film 11a Surface 11b Back surface 11x Kitchen towel sheet 30 Belt press section 31 Dehydration roll 32 Yankee dryer 33 Embossed belt 34 Wet paper 200 Test piece 200a, 200d Corners 210 Band 220 Holder

Claims

1. A kitchen roll towel product comprising a kitchen roll towel formed by winding a sheet-like kitchen towel, which is a two-ply laminate, in a roll shape, and a packaging film for packaging the kitchen roll towel, wherein an adhesive layer is provided at least in part between the plies of the two-ply laminate, The kitchen towel has an uneven pattern derived from a paper machine applied between the headbox of the paper machine and the Yankee dryer inlet, the basis weight of the kitchen towel is 47 g / m² or more and 55 g / m² or less, the water absorption of the kitchen towel is 155 g / m² or more and 520 g / m² or less, and the roll density is 0.04 g / cm ３ or more and 0.15 g / cm ３ or less, and the ply peeling strength of the kitchen towel sheet is 0.05 N / 75 mm or more and 2.0 N / 75 mm or less, and the packaging film forms a caramel package for one or more rolls, the kitchen roll towel product.

2. The kitchen roll towel is provided with a plurality of perforations that are spaced at a predetermined interval 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 surrounded by two adjacent perforations in the longitudinal direction is 0.02 m ２ or more and 0.10 m ２ or less. The kitchen roll towel product according to claim 1.

3. The kitchen roll towel product according to claim 1 or 2, wherein the diameter of one roll is 113 mm or more and 200 mm or less.

4. The kitchen towel further has an embossed pattern different from the concavo-convex pattern, together with the concavo-convex pattern derived from the paper-making machine, and the size in the embossed pattern is 1 mm ２ or more and 40 mm ２ The depth of a single emboss having an area of or less is 0.10 mm or more and 0.80 mm or less, and the kitchen roll towel product according to any one of claims 1 to 3.

5. The embossed pattern includes a plurality of the individual embossments, and the number per 100 cm ２ of the unit area of the individual embossment is 20 or more and 1,800 or less. The kitchen roll towel product according to claim 4.

6. The kitchen roll towel product according to any one of claims 1 to 5, wherein the packaging film has heat sealability.

7. The kitchen roll towel product according to any one of claims 1 to 6, wherein the thickness of the packaging film is 15 μm or more and 40 μm or less.

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