JP2021085107A - Kitchen roll towel products - Google Patents

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

The present invention relates to kitchen roll towel products.

Kitchen towels are widely used, for example, for cleaning cooking equipment such as kitchens, microwave ovens, and stoves, draining and wiping tableware, draining ingredients such as raw vegetables, meat, and fish, and draining oil from fried foods. Therefore, a sufficient amount of water absorption and an amount of oil absorption are required. For this reason, bulky papermaking techniques have been developed to increase the water absorption and oil absorption of kitchen towels (Patent Documents 1 and 2). However, when a bulky kitchen towel is wound into a roll, there is a problem that the winding is easily loosened. When a roll with loose winding is wrapped, poor sealing and scorch (holes due to charring) occur, and the cosmeticity of the packaging deteriorates.

On the other hand, if the roll is hardened, poor sealing during packaging and deterioration of the cosmetic appearance of the packaging are less likely to occur, but the paper is crushed and the water absorption is reduced, and the merit of the bulky papermaking technology cannot be obtained. In addition, by making the basis weight of the kitchen towel excessively high and wrapping it tightly, it is possible to achieve both the beauty of the packaging and the water absorption, but the cost increases and the paper becomes expensive. There is a problem that it becomes hard and the wiping property is deteriorated. Therefore, there is a demand for a kitchen roll towel product in which a kitchen towel is rolled and wrapped, which is easy to use and has excellent cosmeticity as a product.

Japanese Patent No. 5373208 Japanese Patent Publication No. 2011-506780

An object of the present invention is to provide a kitchen roll towel product in which a roll of a kitchen towel having a high level of water absorption and wiping property and having a good tactile sensation during use is packaged with excellent cosmeticity. Is.

The present invention provides the following kitchen roll towel products (1) to (7) as a preferred embodiment.
(1) A kitchen roll towel product comprising a kitchen roll towel in which a sheet-shaped kitchen towel, which is a two-ply laminated body, is wound into a roll, and a wrapping film for wrapping the kitchen roll towel, which is a paper making machine. It has an uneven pattern derived from a paper making machine provided between the head box and the entrance of the Yankee dryer, and the basis weight of the kitchen towel is 32 g / m ² or more and 65 g / m ² or less, and the water absorption amount of the kitchen towel is 155 g. / Cm ² or more and 520 g / cm ² or less, roll density is 0.04 g / cm ³ or more and 0.15 g / cm ³ or less, and is a caramel package of one or more rolls made of the packaging film. Roll towel products.
(2) The kitchen roll towel is provided at a predetermined interval in the length direction, extends in the width direction, further has a plurality of perforations for cutting the kitchen towel in the width direction, and has a plurality of perforations in the longitudinal direction. area of the kitchen towel surrounded by two of the perforations adjacent is 0.02 m ² or more 0.10 m ² or less, kitchen roll towels products of (1).
(3) The kitchen roll towel product according to (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 has an embossing pattern different from the unevenness pattern in addition to the unevenness pattern derived from the paper machine, and the size of the embossing pattern is 1 mm ² or more and 40 mm ² or less. The kitchen roll towel product according to any one of (1) to (3) above, wherein the depth of the towel is 0.10 mm or more and 0.80 mm or less.
(5) The kitchen roll towel product according to (4) above, wherein the embossing pattern includes a plurality of the embossing units, and the number of the embossing units ^{per unit area of 100 cm 2 is 20 or more and 1800 or less.}
(6) The kitchen roll towel product according to any one of (1) to (5) above, wherein the packaging film has a heat-sealing property.
(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.

According to the present invention, there is provided a kitchen roll towel product in which a roll of a kitchen towel having both water absorption and wiping property at a high level and having a good tactile sensation during use is packaged with excellent cosmeticity. Can be done.

It is a perspective view which shows typically the appearance structure of the kitchen roll towel product which is 1st Embodiment of this invention. It is a perspective view which shows typically the appearance of the roll provided in the kitchen roll towel product of 1st Embodiment shown in FIG. It is a figure which shows the method of obtaining the embossing area of the kitchen towel provided in the kitchen roll towel product of 1st Embodiment shown in FIG. It is a figure which shows the height profile on the XY plane by a microscope by shading. It is a graph which shows the height profile on the XY plane by a microscope. Area is a diagram showing a method of obtaining the 1 mm ² or more 40 mm ² or less of the embossing depth. It is a figure which shows the measuring method of the water absorption amount of the kitchen towel provided in the kitchen roll towel product of 1st Embodiment shown in FIG. It is a figure which shows a part of the papermaking process of the kitchen towel provided in the kitchen roll towel product of 1st Embodiment shown in FIG.

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 an external configuration of the kitchen roll towel product 1 according to the first embodiment. FIG. 2 is a perspective view schematically showing the appearance of the kitchen roll towel (roll) 2 provided in the kitchen roll towel product 1 shown in FIG. 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. FIG. 4 is a diagram showing the height profile on the XY plane by the microscope in shades. FIG. 5 is a graph showing a height profile on the XY plane with a microscope. FIG. 6 is a diagram showing how to obtain the depth of the embossing unit having an area of 1 mm ² or more and 40 mm ^{2 or less.} FIG. 7 is a diagram showing a method of measuring the water absorption amount of the kitchen towel provided in the kitchen roll towel product 1 shown in FIG. 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.

(Kitchen roll towel products)
As shown in FIGS. 1 and 2, the kitchen roll towel product 1 of the present embodiment is a two-ply laminated body, has an uneven pattern derived from a paper making machine, and has a basis weight and a water absorption amount within a predetermined range. A kitchen roll towel 2 (hereinafter, also simply referred to as “roll 2”) in which a sheet-shaped kitchen towel 11x (hereinafter, also referred to as “kitchen towel sheet 11x”) is wound around a core 10 such as a paper tube or a plastic tube is placed in the longitudinal direction. Two of them are arranged side by side to form a caramel package with a packaging film 20.

Here, the uneven pattern derived from the paper machine is an uneven pattern automatically applied between the head box of the paper machine and the entrance of the Yankee dryer. The kitchen roll towel product 1 of the present embodiment is obtained by packaging two kitchen roll towels 2, but the present invention is not limited to this, and one or more may be packaged. In the case of a plurality, the number is preferably two or three from the viewpoint of the cosmeticity of the packaging and the like. By caramel-wrapping the roll, which is the kitchen roll towel 2, defects in sealing and scorch (holes due to charring) are less likely to occur, and the cosmeticity of the package is remarkably improved. Moreover, since it is caramel-wrapped, it has excellent strength and openability.

The outer diameter D1 of the core 10 of the roll 2 is not particularly limited, but is preferably 35 mm or more and 45 mm or less from the viewpoint of easy adjustment of the winding density of the roll 2 and the handleability of the roll 2 during manufacturing. More preferably, it is 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 referred to as the roll surface 11a, and the surface in contact with the core 20 of the roll 2 or the surface facing the core 20 is referred to as the back surface 11b of the roll.

The kitchen towel sheet 11x of this embodiment is a two-ply laminated body. In the kitchen towel sheet 11x, an adhesive layer may be provided between the plies in order to prevent the plies from peeling off. The adhesive layer may be provided on the entire surface between the plies, or may be provided on a part of the ply. 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 thereof include glue.

In the present 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. ^{It is 2} or less. If the basis weight is ^{less than 32 g / m 2} , the tactile sensation of the kitchen towel sheet 11x during use is reduced. 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 that the wiping property is deteriorated. Basis weight is measured based on JIS P 8124.

In the present embodiment, the water absorption of kitchen towel sheet 11x is 155 g / cm ² or more 520 g / cm ² or less, preferably 180 g / cm ² or more 400 g / cm ² or less, more preferably 200 g / cm ² or more 260 g / cm ^{It is 2} or less. Here, in the unit, "g" indicates the weight ^{of the absorbed water, and "cm 2} " indicates the area of the kitchen towel sheet that has absorbed the water. When the size of the kitchen towel sheet 11x is good for handling, if the water absorption amount is ^{less than 155 g / cm 2} , it may not be possible to sufficiently wipe off the water with the single sheet, and the water absorption amount exceeds ^{520 g / cm 2.} Then, the sheet cannot be used up effectively, and the sheet must be discarded even though it has a capacity to absorb water.

The measurement of the amount of water absorption is carried out, for example, as follows. First, a kitchen towel sheet 11x stacked on two plies is collected and cut using a square mold having a size of 7.6 cm (3 inches) to prepare a rectangular test piece having a side of 7.6 cm. Measure the mass of the test piece before water absorption with an electronic balance. The test piece is set in the holder shown in FIG. 7 (a jig for fixing the three points of the test piece, and the jig is made of a metal that does not absorb water).

Distilled water is placed in a commercially available vat at a depth of 2 cm, and the test piece set in the holder is immersed in the distilled water for 2 minutes. After soaking for 2 minutes, the test piece is taken out from the distilled water together with the holder, and the band 210 is attached to one corner 200d of the test piece 200 as shown in FIG. For the band 210, the same kitchen towel sheet 11x as the sample to be measured is cut into 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 toward the center. Next, the holder and the test piece 200 are hung on a rod installed in an empty water tank with the corner portion 200a facing the corner portion 200d facing up, the lid of the water tank is closed, and the test piece 200 is left for 10 minutes. After that, the holder 220 and the test piece 200 are taken out from the water tank, the band 210 and the holder 220 are removed, and the mass of the test piece 200 is measured with an electronic balance. From the change in mass of the test piece 200 before and after immersion in distilled water, the amount of distilled water absorbed per ^{1 m 2 of the test piece (water g / paper m 2} ) is calculated. The measurement is performed 5 times for each sample, and the average value is adopted. This measurement is carried out in a state where the temperature is 23 ± 1 ° C. and the humidity is 50 ± 2% according to the JIS P 8111 method. The distilled water is kept at 23 ± 1 ° C.

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

Also, the area per one kitchen towel sheet 11x, preferably 0.02 m ² or more 0.10 m ² or less, more preferably 0.03 m ² or more 0.08 m ² or less, more preferably 0.04 m ² It is 0.06 m ² or less. It is necessary to set this area in combination with the characteristics of the kitchen towel sheet 11x, particularly the basis weight and the amount of water absorption, instead of setting this area independently. The kitchen roll towel 2 may be provided with a plurality of perforations at predetermined intervals in the length direction. This perforation extends in the width direction of the kitchen towel sheet 11x and cuts the kitchen towel sheet 11x in the width direction. Here, the area surrounded by two perforations adjacent to each other in the longitudinal direction is defined as the area per kitchen towel sheet 11x. Further, the kitchen towel sheet 11x may or may not have a print.

If the area of one kitchen towel sheet 11x ^{is less than 0.02 m 2} , workability and water absorption will decrease, and wiping performance will decrease, making it difficult to wipe the object to be wiped, or wiping it sufficiently with one sheet. If it ^{exceeds 0.10 m 2} , the sheet cannot be used up effectively, and the sheet tends to be lost. More specifically, it is sufficient that one sheet can wipe off one plate, for example, but if the water absorption of the sheet is high, for example, 0.8 sheet can wipe off one plate. At this time, 0.2 sheets are wasted. If the area of one sheet is reduced, workability and water absorption are reduced, and water wiping becomes insufficient. In the present embodiment, a highly convenient kitchen towel sheet 11x can be obtained by setting an optimum amount of water absorption or the like when the sheet area has good workability.

In the present 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. It is necessary to set the roll density according to the basis weight and water absorption of the kitchen towel sheet 11x, instead of setting the range of the roll density independently. If the roll density is ^{less than 0.04 g / cm 3} , the top surface and / or the bottom surface cannot be folded neatly when caramelized, and unbonded parts or scorch are generated, resulting in cosmeticity. It may be impaired. If the roll density ^{exceeds 0.15 g / cm 3} , the kitchen towel sheet may be crushed and the water absorption amount may decrease when the winding diameter is constant.

The roll density can be measured by, for example, the following method. First, the roll volume is represented by {{cross-sectional area of roll outer diameter (roll diameter DR) portion}-(cross-sectional area of core outer diameter DI portion)} x roll width (converted to around 206 mm). For example, when the roll mass per roll width 206 mm is 327 g, the winding diameter DR 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 . If the kitchen roll towel 2 does not have a core, the diameter of the center hole is replaced with the core outer diameter DI.

Regarding the kitchen roll towel 2 of the present embodiment, the winding diameter of the kitchen roll towel 2 per roll is preferably 113 mm or more and 200 mm or less, more preferably 135 mm or more and 180 mm or less, and further preferably 140 mm or more and 160 mm or less. .. When the winding diameter is less than 113 mm, the roll density and the water absorption of the kitchen towel sheet 11x are well-balanced. It tends to be difficult to adjust to a good range. If the winding diameter exceeds 200 mm, the roll density and thus the cosmeticity of the packaging tend to decrease.

Regarding the kitchen towel sheet 11x of the present embodiment, the kitchen towel sheet 11x may have an embossing pattern in addition to the uneven pattern derived from the paper machine. Such an embossed pattern can be easily formed by, for example, embossing. Further, the kitchen towel sheet 11x according to the present embodiment may be a 1-ply sheet embossed and then a 2-ply laminated sheet. When laminating two plies, it is preferable to use a ply bond glue (glue) and apply the glue for adhesion treatment. By adhering to 2 plies in this way, the adhesion of the plies becomes strong, and even if the kitchen towel sheet 11x gets wet with water, the plies do not come off and are hard to tear.

The ply on the surface 11a of the kitchen towel sheet 11x is preferably provided with a dot-shaped embossing pattern. By applying the dot-shaped embossing pattern to the surface 1a, glue can be applied to the embossed portion of the embossed pattern for adhesion treatment, the ply peeling of the kitchen towel sheet 11x is less likely to occur, and the amount of water absorption is large. Fluctuation can be suppressed.

(Ply peeling strength)
The ply 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 further preferably 0.15 N / 75 mm or more. It is 1.0 N / 75 mm or less. If the ply peeling strength is less than 0.05 N / 75 mm, the plies are peeled off and it becomes difficult to wipe off, and if the ply peeling strength exceeds 2.0 N / 75 mm, the water absorption amount of the kitchen towel sheet 1x is inferior.

The ply peel strength is measured by using a tensile tester (STB-1225S, manufactured by A & D Co., Ltd.) according to the tensile test method of JIS P 8113, and the standard conditions specified in JIS P 8111. Do it below. First, a test piece having a width direction of 75 mm and a flow direction of 200 mm is collected from a sample of a kitchen towel sheet 11x. Next, the ply is peeled off by 35 mm in the flow direction. One side of the peeled ply is sandwiched and fixed to the upper gripper (width 75 mm) by 15 mm in the flow direction. The other ply is also fixed to the lower gripper (width 75 mm) by sandwiching it by 15 mm in the flow direction. The pitch (interval) of the gripping tool is 20 mm. Next, tension (peeling) is performed under the condition of a tensile speed of 100 mm / min, and strength data is collected. The strength data is acquired every 20 μm, and the data from the distance 40 mm to 150 mm (measurement length 110 mm) after the start of measurement is averaged and used as the peel strength (N / 75 mm). However, if the distance after the start of measurement includes perforations from 40 mm to 150 mm, shorten the distance after the start of measurement from 40 mm to, for example, 90 mm (measurement length 50 mm) within the range not including perforations. Can be done.

In the embossing pattern, an emboss having ^{an area of 1 mm 2} or more and 40 mm ² or less in size is used as a single emboss. The number of embossed units per unit area of 100 cm ² in the embossing pattern is not particularly limited, but is preferably 20 or more and 1800 or less, more preferably 50 or more and 1000 or less, and further preferably 80 or more and 500 or less. When the number of embossed units is less than 20, in the case of the kitchen towel sheet 11x having good water absorption as in the present embodiment, the plies tend to be easily peeled off from each other. If the number of embossed units exceeds 1800, the kitchen towel sheet 11x tends to be crushed and the amount of water absorption tends to decrease. Further, the shape of the embossed simple substance can be used without particular limitation, such as a circle, an ellipse, a rectangle, a square, and a floral pattern.

Further, in the embossing pattern, ^{the depth of the embossing unit 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 further. It is preferably 0.35 mm or more and 0.55 mm or less. If the depth of the embossed 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. The kitchen towel sheet 11x tends to be bulky, the roll density is lowered, and the cosmeticity of the packaging is lowered.

The area and depth of embossing are measured using a microscope. As the microscope, the product name "One-shot 3D measurement macroscope VR-3100" manufactured by KEYENCE is used. The product name "VR-H1A" can be used as the image observation / measurement / image analysis software of the microscope. The measurement is performed under the conditions of a magnification of 12 times and a visual field area of 24 mm × 18 mm. The measurement magnification and the visual field area may be appropriately changed depending on the desired size of embossing.

As for the area of embossing, as shown in FIG. 3, the length a of the longest part of the peripheral edge fr of the embossing and the length b of the longest part in the direction perpendicular to the length a are measured, and a × b is calculated. Obtained as the area. Further, FIG. 4 shows a height profile on the XY plane by a microscope, and the height of the sheet surface is represented by shading. The substantially elliptical portion whose shading is different from the periphery in FIG. 4 indicates individual embossing, and the length a of the longest portion of one embossing can be visually distinguished. Of these, for embossing units with an area of 1 mm ² or more and 40 mm ² or less, the number per ^{100 cm 2 is counted.}

The number of embosses is measured visually by selecting ^{an arbitrary 100 cm 2} part from the entire area between two perforations adjacent to each other in the longitudinal direction in the entire width of the sheet. ^{If a 100 cm 2} part cannot be selected, such as when knurling (edge embossing) is performed, the number of embossed parts is measured for the part that can be measured except for the part that cannot be measured by knurling (edge embossing). Converted as the number of embosses per 100 cm ^2.

Next, the embossing depth is measured for the embossing unit having an area of 1 mm ² or more and 40 mm ^{2 or less.} The embossing depth is determined by measuring the height difference of the embossing described above using the microscope. First, the line segment AB is drawn as shown in FIG. 4, and the height profile of FIG. 5 is obtained. The line segment AB may be drawn so as to cross the embossing. The height profile is a (measured) cross-sectional curve S representing the unevenness of the sample surface of the actual sheet, but noise (fiber lumps on the surface of the sheet, fibers extending like a whiskers, or a portion without fibers). It also includes a steep peak due to the above), and it is necessary to remove such a noise peak when calculating the height difference of the unevenness.

Then, as shown in FIG. 6, the "contour curve" W is calculated from the cross-sectional curve S of the height profile, and among the contour curves W, the average value of the bottoms P1 and P2 and the top sandwiched between the bottoms P1 and P2. The difference is calculated, and this is defined as the embossing depth D1. Similarly, the difference between the average value of the bottoms P2 and P3 and the top sandwiched between the bottoms P2 and P3 is obtained, and this is defined as the embossing depth D2. Similarly, D3 is measured. As shown in FIG. 6, D1, D2, and D3 are measured at continuous points. This measurement is measured at 10 locations on the kitchen towel sheet 11x, and the average value of the data at 30 locations in total is used as the embossing depth. If the distance between the embosses (distance between P1 and P2) is 1 cm or more, the measurement is not performed at continuous points, and the average value of the bottoms P1 and P2 and the top sandwiched between the bottoms P1 and P2 are not measured. The difference may be obtained, this may be used as the embossing depth D1, D1 may be measured at 30 points, and the average value may be used as the embossing depth.

The "contour curve" is λc: 800 μm from the cross-sectional curve (however, 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”). It is a curve obtained by removing the component of the surface roughness of a shorter wavelength by a low-pass filter. If λc is set to be greater than or equal to the distance between P1 and P2 and P2 and P3 between adjacent embosses (this is called embossing pitch), the peak may be recognized as noise. Therefore, λc is embossed pitch. Less than. For example, when the embossing pitch is 800 μm or less, for example, λc: 250 μm is set.

When measuring embossing, the measurement surface should be the front side, and when selecting embossing, the kitchen towel roll 1 should be viewed from the end of the outer roll of the kitchen towel roll 1 (the position where the kitchen towel sheet 1x starts to be used). Measure at the part corresponding to 10% of the winding length. For example, when the winding length is 30 m, the measurement is performed at a portion of 30 m × 10% = 3 m from the end portion. If 10% of the winding length hits the perforation, measure the outer winding side of the perforation.

As long as the ply on the back surface 1b of the kitchen towel sheet 11x has an uneven pattern derived from the papermaking process different from the embossing pattern, there is no particular limitation as to whether or not the embossing pattern is applied. It may or may not be nested or pin-to-pin embossed, but is preferably nested or unembossed, more preferably unembossed.

As the packaging film 20, for example, a resin film having a heat-sealing property 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, scorch is generated during heat sealing, which tends to reduce the cosmetic appearance or tear the film. Further, if the thickness exceeds 40 μm, the openability tends to decrease. The packaging film 20 is not particularly limited as long as it has a heat-sealing property, but for example, a polyethylene film is preferable.

The kitchen towel sheet 11x of the present embodiment preferably has the following physical characteristics in addition to the above-mentioned physical characteristics.
(DMDT and DCDT)
The vertical tensile strength DMDT (Dry Machine Direction Tensile Strength) of the kitchen towel sheet 11x at the time of drying based on JIS P 8113 is preferably 5N / 25mm or more and 24N / 25mm or less, more preferably, from the viewpoint of wiping property and the like. Is 8N / 25mm or more and 19N / 25mm or less, more preferably 10N / 25mm or more and 16N / 25mm or less. Further, the lateral tensile strength DCDT (Dry Cross Direction Tensile Strength) at the time of drying is preferably 3N / 25mm or more and 19N / 25mm or less, more preferably 5N / 25mm or more and 14N / 25mm or less from the viewpoint of wiping property and the like. More preferably, it is 6N / 25mm or more and 12N / 25mm or less. If the DMDT is less than 5N / 25mm or the DCDT is less than 3N / 25mm, the kitchen towel sheet 11x tends to tear easily when absorbing water and the wiping property tends to decrease, and the DMDT exceeds 24N / 25mm. Or, when the DCDT exceeds 19 N / 25 mm, the density of the kitchen towel sheet 11x becomes high, and the wiping property tends to decrease as the water absorption decreases, or the kitchen towel sheet tends to become hard and the wiping property decreases.

(WMDT and WCDT)
The longitudinal tensile strength WMDT (Wet Machine Direction Tensile Strength) of the kitchen towel sheet 11x based on the old JIS S 3104 when wet is preferably 1.3 N / 25 mm or more and 7.0 N / from the viewpoint of wiping property and the like. It is 25 mm or less, more preferably 2.0 N / 25 mm or more and 6.0 N / 25 mm or less, and further preferably 2.5 N / 25 mm or more and 5.0 N / 25 mm or less. Further, the lateral tensile strength WCDT (Wet Cross Direction Tensile Strength) at the time of wetting is preferably 0.7 N / 25 mm or more and 5.5 N / 25 mm or less, more preferably 1.0 N / from the viewpoint of wiping property and the like. It is 25 mm or more and 4.0 N / 25 mm or less, more preferably 1.8 N / 25 mm or more and 3.5 N / 25 mm or less. 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 be torn at the time of water absorption, and the wiping property tends to be deteriorated. When WMDT exceeds 7.0 N / 25 mm or WCDT exceeds 5.5 N / 25 mm, the density of the kitchen towel sheet 11x increases, and the wiping property decreases or becomes hard as the water absorption decreases. Wipeability tends to decrease.

(Specific volume)
The specific volume of the kitchen towel sheet 11x 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 further preferably 9 cm ^{3 from the viewpoint of tactile sensation during use.} / G or more and 13 cm ³ / g or less. If the specific volume of ^{the kitchen towel sheet 11x is less than 6 cm 3} / g, the water absorption amount and the tactile sensation of the kitchen towel sheet 11x tend to decrease, and if ^{it exceeds 16 cm 3} / g, the kitchen towel sheet 11x becomes bulky. The tactile sensation during use tends to be reduced, and the improvement in water absorption tends to be insufficient. The specific volume is a value expressed by ^{the volume cm 3} per unit g obtained by dividing the paper thickness per 11x of the kitchen towel sheet by the basis weight.

(Manufacturing method of kitchen towel sheet and kitchen towel roll)
The kitchen towel sheet 11x and the kitchen roll towel 2 can be manufactured in the order of, for example, (1) paper making 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 step will be described.

In the papermaking process, the kitchen towel sheet 11x is subjected to an uneven pattern derived from the papermaking process, which is different from the embossing pattern described above. By having this uneven pattern, the water absorption amount of the kitchen towel sheet 11x is further increased. In addition, the origin of the paper making process means that it is applied between the head box of the paper machine and the entrance of the Yankee dryer in the paper making process of the kitchen towel sheet 1x. Specifically, in a part of the papermaking process shown in FIG. 9, unevenness can be imparted by the belt press portion 30 arranged between the dehydration roll 31 and the Yankee dryer 32. In the belt press portion 30, the wet paper 34 and the uneven belt 33 (the uneven belt 33 loops the belt press portion 30 and the Yankee dryer 32) are pressed together to give the wet paper an uneven pattern. be able to.

Further, the uneven pattern can be appropriately changed by changing the belt pattern (fine pattern, rough pattern). Although the specific volume (paper thickness) changes when the uneven pattern is changed, it is preferable to select a pattern so that the specific volume (paper thickness) of the base paper is within the numerical range described later.

In this case, the basis weight of two-ply base paper used in the manufacture of kitchen towels sheet 11x is preferably 33 g / ^{m 2} or more 68 g / ^{m 2} or less, it is 39g / ^{m 2} or more 63 g / ^{m 2} or less More preferably, it is 47 g / m ² or more and 55 g / m ² or less. 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 2.0 mm / sheet. It is more preferable that the number of sheets is 10 or more and 3.0 mm / 10 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 9 cm ³ / g or more and 13 cm ³ / g or less. Is even more preferable. Further, the thickness of the kitchen towel sheet 11x is preferably higher than the paper thickness of the base paper in order to improve water absorption, and the specific volume of the kitchen towel sheet 11x is larger than the specific volume of the base paper in order to improve water absorption. Higher is preferable.

The kitchen roll towel 2 thus obtained is caramel-wrapped by a packaging film 20 according to a known method in a state where one or more of them are aligned in the longitudinal direction and arranged in parallel in the width direction.

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

Kitchen roll towels from Example 1 to Example 25 and Comparative Examples 1 to 12 through the steps of (1) papermaking and creping, (2) embossing, (3) roll winding, and (4) caramel packaging. Manufactured the product. Each parameter was measured and sensory evaluation was performed on the kitchen towel roll products of all the above examples and comparative examples. The results are shown in Tables 1-5. The kitchen towel sheets of Examples 1 to 25 and Comparative Examples 1 to 12 had an uneven pattern derived from a paper machine.

The sensory evaluation was performed by a method in which 20 monitors select "good" or "bad" for each evaluation item. The evaluation criteria are as follows. ◎, ○, and △ were accepted.
⊚: When “good” is 18 or more and 20 or less ○: When “good” is 14 or more and 17 or less △: When “good” is 10 or more and 13 or less ×: “Good” is 6 people When 9 or more and 9 or less XX: When there is no "good" or 1 or more and 5 or less

Each evaluation item will be described.
<Water absorption per sheet (indicated as "water absorption / one sheet" in each table)>
When the monitor used one sheet, the water residue was evaluated.
<Can the sheet be used without waste (indicated as "efficiency" in each table)>
The monitor used one sheet and evaluated whether it felt wasteful when it was discarded.
<Beauty>
The occurrence of scorch and unbonded parts was visually evaluated.
<Difficulty in tearing the film (indicated as "difficulty in tearing" in each table)>
The product was displayed by hand and evaluated for its resistance to tearing when carried.
<Openability>
The ease of cutting the film with a finger or opening it like a hole was evaluated.
<Wipeability>
We evaluated the ease of wiping work when the monitor was used.
<Tactile sensation during use>
We evaluated the tactile sensation when used by the monitor.

Based on the above, according to the present invention, the basis weight, water absorption amount, sheet area, roll density of kitchen roll towel roll (roll), thickness of packaging film, etc. of the kitchen towel sheet are within the scope of claims. By doing so, it is possible to achieve both water absorption and wiping property at a high level, and to wrap a rolled-up roll of a kitchen towel with a good tactile sensation during use with excellent cosmeticity, and commercialize it. I understand.

1 Kitchen roll towel product 2 Kitchen roll towel 10 core 20 Packaging film 11a Front side 11b Back side 11x Kitchen towel sheet 30 Belt press part 31 Dehydration roll 32 Yankee dryer 33 Concavo-convex belt 34 Wet paper 200 Test piece 200a, 200d Corner 210 Band 220 holder

Claims (7)

A kitchen roll towel product comprising a kitchen roll towel obtained by winding a sheet-shaped kitchen towel which is a two-ply laminated body into a roll shape, and a wrapping film for wrapping the kitchen roll towel.
It has an uneven pattern derived from the paper machine provided between the head box of the paper machine and the entrance of the Yankee dryer, and the basis weight of the kitchen towel is 32 g / m ² or more and 65 g / m ² or less, and the water absorption amount of the kitchen towel. there 155 g / cm ² or more 520 g / cm ² or less, roll density of less 0.04 g / cm ³ or more 0.15 g / cm ^3, is caramel package of one or more rolls by the wrapping film , Kitchen roll towel products. The kitchen roll towels are provided at predetermined intervals in the length direction, extend in the width direction, further have a plurality of perforations for cutting the kitchen towel in the width direction, and are adjacent to each other in the longitudinal direction. One of the areas of the kitchen towel surrounded by perforations is 0.02 m ² or more 0.10 m ² or less, kitchen roll towels product according to claim 1. The kitchen roll towel product according to claim 1 or 2, wherein the winding diameter of one roll is 113 mm or more and 200 mm or less. The kitchen towel has an embossing pattern different from the unevenness pattern in addition to the unevenness pattern derived from the paper machine, and the depth of the embossing unit having an area of ^{1 mm 2} or more and 40 mm ^{2 or less in the embossing pattern.} The kitchen roll towel product according to any one of claims 1 to 3, wherein the size is 0.10 mm or more and 0.80 mm or less. The kitchen roll according to any one of claims 1 to 4, wherein the embossing pattern includes a plurality of the embossing units, and the number of the embossing units ^{per unit area of 100 cm 2 is 20 or more and 1800 or less.} Towel products. The kitchen roll towel product according to any one of claims 1 to 5, wherein the packaging film has a heat-sealing property. 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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