JP2004283358A - Tissue paper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve using sense of soft type tissue paper. <P>SOLUTION: This tissue paper is formed to satisfy that the basis weight of a sheet is 13-20 g/m<SP>2</SP>, a sheet density expressed by formula: (the basis weight of the single tissue paper ×2)/(the thickness of two sheets stacked one upon another) is 0.240 g/cm<SP>3</SP>or less, and the lengthwise and transverse average of surface characteristics expressed by the mean deviation of a friction coefficient which is measured by uniformly applying olive oil on a contact plane composed of an artificial leather is 0.065 or less. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【００３０】
そして、最終的にカレンダー処理工程において、紙厚が過度に低下して本発明の紙厚の範囲から外れないようにオンラインマシンカレンダーおよびプライマシンカレンダーの各カレンダー処理における圧力を調整してカレンダー処理する。
【００３１】
すなわち、上記の製造方法をとると、原料パルプの叩解幅を狭めて高密度化により紙厚が薄くかつ表面の平滑度の高い原紙が形成され、その原紙に対して高いクレープ率でクレープ加工することにより滑らかさを有しつつふっくらとした感じが発現し、その後のカレンダー処理において、最終的な紙厚が調整される。なお、具体的な、クレープ率や、使用する製造設備、添加剤、原料パルプの配合割合により適宜調整すればよい。
【００３２】
【実施例】
市販の製品と本発明に係る製品とに関し、物性等を調査した。その結果を表１〜表２に示す。
【００３３】
【表１】

【００３４】
ここで、実使用評価及び官能評価は、成人３０名に対し、「鼻かみ時の肌触りの良さ」（滑らかさ感）、「ふんわりした厚み感」の各項目について、最も良いもの：５点、良いもの：４点、普通：３点、悪いもの：２点、最も悪いもの：１点の５段評価を行い、その平均点が４．０以上を◎、３．０〜４．０未満を○、２．０〜３．０未満を△、１．０〜２．０未満×としてあらわしたものである。
【００３５】
＜考察＞
本発明の実施例に係る製品は、市販品との比較において、いずれの実使用評価および官能評価項目においても十分な評価がなされていることからして、本発明の実施例に係る製品の区別化は明確である。そして、市販品に比較して、優れた特性を示すものとなっている。さらに、本発明にかかる表面特性値において、他のソフトタイプの表面特性値が高いのに対し、本実施例は低い表面特性値となっている。このことから、本発明にかかる表面特性試験は鼻かみ時の肌触り感（滑らかさ感）との相関が示されている。また、表をみてみると、ＴＭの値と手肉感、Ｔ０−ＴＭの値とふんわり感との相関も示されている。
【００３６】
【発明の効果】
以上、詳述のとおり、本発明によれば、消費者がソフトタイプのティシュペーパーに求める要素を従来製品よりも向上させたティシュペーパーが提供される。
【図面の簡単な説明】
【図１】その測定端子および測定時の概略を示す図である。
【図２】本発明にかかる表面特性の測定装置の例の概略を示す図である。
【図３】その接触平面の構成を説明するための図である。
【図４】ソフトタイプのティシュペーパーが収められた収納箱の一般的態様を示す図である。
【符号の説明】
１…収納箱、１Ａ…窓、２…シート、２Ａ…スリット、３…ティシュペーパー、Ｌ…スリットの長さ、Ｘ…取り出し口[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to tissue paper and articles containing the tissue paper.
[0002]
[Prior art]
The tissue paper is stored in a storage box called a carton having a slit-shaped outlet on the upper surface and is commercially available. Generally, tissue paper is a so-called two-ply state in which two pieces of tissue paper are stacked, and when a piece of tissue paper is taken out through a slit of a film attached to a window on the upper surface of the storage box, a part of the next piece of tissue paper is obtained. Is exposed to the outside and is folded in a so-called pop-up system so that it can be easily taken out next time, and stored in a storage box.
[0003]
In this way, commercially available tissue paper includes a so-called soft type that is specialized for directly touching the skin, and is generally compared to a general-purpose type that is commercially available in a pack of five. Rice tsubo is as high as about 13 to 20 g / m ² .
[0004]
By the way, the present inventors, regarding general-purpose type tissue paper, based on the results of surveying the trends of consumers, based on the results of surveys of consumers, raised the actual feeling of use of consumers considering the use of the most frequently used droppings. A general-purpose tissue paper has been disclosed in Japanese Patent Application No. 2002-255944.
[Patent Document]
JP-A-2002-238799
JP-A-2001-286414
Japanese Patent Application No. 2002-255944
[0005]
[Problems to be solved by the invention]
A survey of the consumer trends of soft tissue paper shows that the majority of consumers must (1) clean their droppings frequently, such as at the birth of hay fever or when suffering from a cold. In most cases, soft tissue paper is purchased, and it has been found that products are selected with an emphasis on the feeling of use of the droppings more than general-purpose tissue paper.
[0006]
Other important factors in purchasing the soft tissue paper are (2) smooth and quick removal from the carton so that the drop can be dealt with quickly, and (3) luxury. More specifically, there is a feeling of hand flesh, softness, and fluffiness when picked up in the hand. (4) Since it is more expensive than general-purpose type, it is used at the start of use (when taking out the first sheet from a carton). )), And there are many opinions that (5) additives and the like are not applied to the tissue paper surface and can be used safely for delicate infants with skin. It was found.
[0007]
In view of the above, the present invention, in view of the above-mentioned consumer's opinion, emphasizes the usage of the consumer and the factors that motivate the purchase of products, and considers the factors that consumers demand for soft-type tissue paper more than conventional products. It is to provide an improved tissue paper.
[0008]
[Means for Solving the Problems]
The present invention which has solved the above-mentioned problems and the operation and effect thereof are as follows.
<Invention according to claim 1>
It is a pair of tissue papers,
A tissue paper which satisfies the following conditions (A) to (C).
(A) A single piece of tissue paper weighs 13 to 20 g / m ² .
(B) The sheet density represented by (one sheet of tissue paper × 2 tsubo) / (paper thickness of two sheets) is 0.240 g / cm ³ or less.
(C) Olive oil is uniformly applied to a contact plane made of artificial leather, and the average of the surface characteristics represented by the average deviation of the measured coefficient of friction is 0.065 or less.
[0009]
<Invention according to claim 2>
The condition (C) is:
4 mg of olive oil is uniformly applied to a 10 mm square contact plane made of artificial leather, and the entire contact plane is brought into contact with a paper sample fixed on a horizontal measurement surface made of artificial leather at a contact pressure of 50 gf / cm ^2. In this state, while applying a tension of 20 gf / cm to the paper sample in the moving direction, the paper sample is horizontally moved at a speed of 0.1 cm / sec in a direction orthogonal to the length direction or width direction of the contact plane. The average length and breadth of the surface characteristics represented by the average deviation of the coefficient of friction when moved by 2 cm for each measurement surface is 0.065 or less;
The tissue paper according to claim 1, which is:
[0010]
<Invention of Claim 3>
At steel sheet having a circular plane of compression the cross-sectional area 2 cm ² at 2-ply, when compressed with a compressive load 50 gf / cm ² and a thickness TM when compressing the tissue paper in compressive load 0.5 gf / cm ² The tissue paper according to claim 1 or 2, wherein a displacement difference (T0-TM) from the thickness T0 is 0.100 mm or more, and the thickness TM is 0.200 mm or more.
[0011]
<Invention of Claim 4>
The dry tensile strength in the longitudinal direction of one sheet is 150 to 350 cN / 25 mm width, the dry tensile strength in the lateral direction is 80 to 140 cN / 25 mm width, and (longitudinal dry tensile strength) / (horizontal direction) The tissue paper product according to any one of claims 1 to 3, having a value of 1.0 to 3.0.
[0012]
<Invention according to claim 5>
The tissue paper according to any one of claims 1 to 4, wherein a pulp fiber having an NBKP blending ratio of 30 to 80% is used as a main raw material.
[0013]
(Effect)
According to the first aspect of the present invention, by satisfying the conditions (A) to (B), the paper has a feeling of thickness when picked up by hand instead of the paper thickness, and the softness and the feeling of thickness are compatible. You. If the conditions of (A) to (C) are satisfied, there is a feeling of smoothness when used for wiping at a site where a lot of sebum exists, despite a feeling of thickness. Therefore, there is a feeling of softness and thickness when picked up by the hand, so that consumers can feel safe.At the same time, there is a feeling of smoothness when used in areas where there is a relatively large amount of sebum, such as around the nose. At times, it becomes a soft tissue paper with excellent usability. The test (C) can be easily performed according to the second aspect of the present invention.
[0014]
On the other hand, when the value of T0-TM is 0.100 mm or more, when the consumer picks up the tissue paper, there is a moderate sinking and repulsion due to compression, giving a sufficient thickness feeling, so-called It has a "fluffy (fluffy thickness)" feeling. Further, when the TM is 0.200 mm or more, the tissue paper has an appropriate thickness even when it is pinched by hand, and has a higher hand-feeling feeling than general-purpose or conventional product tissue paper.
[0015]
On the other hand, tissue paper is usually sold in a storage box called a carton, but the dry tensile strength in the longitudinal direction of one piece is 150 to 350 cN / 25 mm width, and the dry tensile strength in the transverse direction is one. When the strength is 80 to 140 cN / 25 mm width and the value of (longitudinal dry tensile strength) / (longitudinal dry tensile strength) is 1.0 to 3.0, the actual nose may be chewed. Breakage during use is unlikely to occur. In addition, it is possible to smoothly pull out from the carton, and it is difficult for breakage to occur at the time of removal.
[0016]
In producing the soft-type tissue paper, it is preferable to use pulp fibers having an NBKP compounding ratio of 30 to 80% as a main raw material.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of the present invention will be described in detail with reference to FIGS.
The soft-type tissue paper according to the present invention is a tissue paper formed by stacking two pieces of paper, wherein (A) one tissue paper has a U.S.P. of 13 to 20 g / m ² , (B) ( The sheet density represented by (one square meter of tissue paper × 2) / (paper thickness when two sheets are stacked) is 0.240 g / cm ³ or less, preferably 0.220 to 0.230 g / cm ³ . (C) 4 mg of olive oil is uniformly applied to a 10 mm square contact plane made of artificial leather, and the entire contact plane is fixed on a horizontal measurement surface made of artificial leather with a contact pressure of 50 gf / cm ^2. In this state, the paper sample is applied with a tension of 20 gf / cm in the moving direction, and at a speed of 0.1 cm / sec in a direction orthogonal to the length direction or the width direction of the contact plane. Paper sample The vertical and horizontal average of the surface characteristics represented by the average deviation of the coefficient of friction when the horizontal measurement surface is moved by 2 cm is 0.065 or less, preferably 0.060 or less, particularly preferably 0.55 or less. Meet that.
[0018]
The measurement of the rice tsubo under the condition (A) is performed based on JIS P8124.
[0019]
The measurement of the paper thickness under the condition (B) is performed based on JIS P8118.
[0020]
In the measurement of the surface characteristics under the condition (C), an artificial leather (Suppare: Asahi Kasei) is laid and fixed on a base of an ordinary MMD tester, for example, a friction tester (KES SE) manufactured by Kato Tech Co., Ltd. At the same time, the measuring terminal T is covered with artificial leather (Sapurare: Asahi Kasei), and the portion (contact plane) of the measuring surface of the measuring terminal covered with artificial leather is olive oil (BOSCO extra virgin oil: Nisshin Essential Oil) 4 mg is uniformly applied, and the measurement can be performed in the same manner as the MMD measurement procedure. In detail, the contact plane constituted by the artificial leather according to the present invention is made of a piano wire having a cross-sectional diameter of 0.5 mm, and has a unit bulge having a tip with a radius of curvature of 0.25 mm adjacent thereto, An MMD measurement terminal having a continuous measurement surface with a total width of 10 mm and a measurement surface of approximately 10 mm square having a length of the measurement surface of 10 mm can be formed by coating with the artificial leather. The covering of the terminal with the artificial leather is performed such that the artificial leather is in close contact with the measurement surface of the terminal so that a contact plane of 10 mm square is formed, or by applying a slight tension to cover the terminal exactly. Can be achieved. When fixing the artificial leather to the terminal, firmly fix it so that the artificial leather and the internal terminal do not shift during measurement, that is, when the paper sample is moved, and the artificial leather does not deform the contact plane. is important. For fixing, for example, after covering the terminal so that the contact plane is formed, a part that does not constitute the contact plane is firmly fixed to a part that does not affect the measurement of the device with a rubber band or the like, for example, a support material of the terminal. . Also, artificial leather is spread on the base of the MMD testing machine and fixed with an adhesive tape or the like. At this time, it is important that the artificial leather is firmly fixed to the base so as not to be distorted at the time of measurement. Further, the same artificial leather as the artificial leather constituting the contact plane is used as the artificial leather laid on the base. The paper sample was cut into a 10 cm square and used, and fixed to a base on which artificial leather was spread. At the time of measurement, the sample is held down on a paper sample by a sample holding weight (about 100 g). Also, the load on the measuring terminal of the tester was set to 50 g, and the entire contact plane made of artificial leather was brought into contact with the paper sample at a contact pressure of 50 gf / cm ² , which was similar to the MMD measurement. This can be achieved by attaching a disk-shaped weight above the terminal. Of course, the manner of fixing one end (the end opposite to the moving direction of the paper sample) of the support material is in accordance with the MMD measurement. The measurement is performed three times in the vertical direction and three times in the horizontal direction of the paper sample, for a total of six times, and the measured value is an average value of the six times.
[0021]
In addition, artificial leather and olive oil can be replaced with equivalent products. Further, the surface properties can be adjusted by pulp blending, calendering conditions, papermaking moisture, doctor blade angle, blade angle, balance of adhesive / peeling strength, crepe rate, addition and amount of surfactant, and the like. is there.
[0022]
On the other hand, the soft type tissue paper according to the present invention is a steel sheet having a circular flat surface with a compression cross-sectional area of 2 cm ^{2 formed by} stacking two sheets, and has a thickness TM when the tissue paper is compressed under a compression load of 50 gf / cm ^2. It is desirable that the displacement difference (T0−TM) from the thickness T0 when compressed with a compression load of 0.5 gf / cm ² is 0.100 mm or more, and the thickness TM is 0.200 mm or more.
[0023]
T0 and (T0-TM) were measured using Kato Tech Co., Ltd. “Handy Compression Tester KES-G5”, a tissue paper was spread on a horizontal pedestal formed of a steel plate, and a compression area of 2 cm was set at the approximate center. ^The steel plate having the circular flat surface is brought into contact with the steel plate having the circular flat surface at a compression load of 0.5 gf / cm ² and a speed of 10 mm / min. After being moved and compressed to measure the thickness in a state where the indentation is stable, the compression load is further compressed at 50 gf / cm ² and a speed of 10 mm / min to measure the thickness (TM) in a state where the indentation is stable. Then, a thickness displacement difference is calculated from the measured values. The greater the displacement difference, the greater the depth of indentation when pushed up to 50 gf / cm ² , which indicates that the paper is soft and does not make the user feel the thinness of the paper. In addition, each measured value makes the value read from the gauge of the said compression testing machine the measured value.
[0024]
The above T0 and (T0-TM) are the mixing ratio of LBKP and NBKP as raw materials, the type of pulp (fiber roughness, or the type and age of the tree as raw material), beating degree, papermaking moisture, calender gap, pressure and material. It can be adjusted by the addition and amount of a surfactant.
[0025]
On the other hand, the soft-type tissue paper according to the present invention has a single piece of dry tensile strength in the longitudinal direction of 150 to 350 cN / 25 mm width, a transverse dry tensile strength of 80 to 140 cN / 25 mm width, and ( It is desirable that the value of (dry tensile strength in the vertical direction) / (dry tensile strength in the horizontal direction) be 1.0 to 3.0. The dry tensile strength in the machine direction and the transverse direction is measured based on JIS S 3104 and JIS P 8113.
[0026]
With such dry tensile strength, breakage during actual use to wipe off the drop is unlikely to occur, and within the above range of tensile strength, it is a set of two sheets of a normal soft type tissue paper storage form and a commercial form. When folded in a pop-up manner and stored in a storage box having a take-out opening at the top, tissue paper can be smoothly taken out from the take-out opening at the top of the storage box without breaking. In this case, the size (area) of the tissue paper is one size (150 to 200 mm in length × 150 to 200 mm in width) specified in JIS S 3104, and a general storage box as shown in FIG. If it is stored in the storage box, it is preferable that the length of the storage box is 240 ± 25 mm, the width is 115 ± 25 mm, and the height is 30 mm to 150 mm. As shown in the example of the drawing, a sheet 2 covering the window 1A which is opened at the upper part of the storage box 1 is adhered to the take-out opening from the inner side of the box. It is preferable that the length of the slit 2A be 175 mm to 185 mm in the case of a general outlet X provided in this type of storage box provided with a slit 2A along the slit. Then, it is preferable that the slit and the tissue paper are accommodated in a storage box so that the lateral direction is parallel.
[0027]
On the other hand, in the production of the soft tissue paper according to the present invention, it is desirable to use pulp fibers having an NBKP compounding ratio of 30 to 80% as a main raw material. Within such a range, a tissue paper with a high texture can be obtained while maintaining the surface characteristics and the compression characteristics according to the present invention.
[0028]
In addition, the soft tissue paper according to the present invention can be manufactured according to known facilities and manufacturing processes. That is, the raw material pulp can be produced by a production method in which the raw material pulp is subjected to paper making, creping, and calendering.
[0029]
In producing the soft tissue paper of the present invention, the raw material pulp and papermaking conditions are adjusted in the papermaking process so as to fall within the range of the rice tsubo of the present invention. At this time, the beating width of the raw pulp is reduced to increase the density. In general, when the density is increased by defining the rice tsubo, the paper strength is increased, the paper thickness is reduced and the feeling of fluff is not obtained, but in the subsequent creping process, the crepe ratio is adjusted by adjusting the blade angle of the crepe. If you increase it, you will feel softer. The crepe rate is defined by the following equation (1).

[0030]
Finally, in the calendering step, the calendering is performed by adjusting the pressure in each calendering process of the online machine calendar and the ply machine calendar so that the paper thickness is excessively reduced and does not fall out of the range of the paper thickness of the present invention. .
[0031]
That is, when the above-described production method is employed, a base paper having a thin paper thickness and a high surface smoothness is formed by narrowing the beating width of the raw pulp and increasing the density, and creping is performed on the base paper at a high creping rate. As a result, a plump feeling is exhibited while having smoothness, and the final paper thickness is adjusted in the subsequent calendering process. In addition, what is necessary is just to adjust suitably according to the concrete crepe rate, the manufacturing equipment used, an additive, and the compounding ratio of a raw material pulp.
[0032]
【Example】
Physical properties and the like of the commercially available product and the product according to the present invention were investigated. The results are shown in Tables 1 and 2.
[0033]
[Table 1]

[0034]
Here, the actual use evaluation and the sensory evaluation were the best for each of the 30 items of “good touch when sniffing” (smoothness) and “fluffy thickness”: 5 points. Good: 4 points, normal: 3 points, bad: 2 points, worst: 1 point, the five-point evaluation was performed, and the average score was 4.0 or more. ◎ 3.0 to less than 4.0 、, 2.0 to less than 3.0 are represented as Δ, and 1.0 to less than 2.0 ×.
[0035]
<Discussion>
The product according to the embodiment of the present invention is distinguished from the commercial product because it has been sufficiently evaluated in any of the actual use evaluation and the sensory evaluation items in comparison with the commercial product. The transformation is clear. And, it has excellent characteristics as compared with commercial products. Further, in the surface characteristic values according to the present invention, the surface characteristic values of the other soft types are high, whereas the surface characteristic values of the present embodiment are low. From this, the surface property test according to the present invention shows a correlation with the feeling of touch (smoothness) when the nose is blown. The table also shows the correlation between the value of TM and hand feeling, and the correlation between the value of T0-TM and softness.
[0036]
【The invention's effect】
As described above in detail, according to the present invention, there is provided a tissue paper in which elements required by a consumer for a soft type tissue paper are improved as compared with conventional products.
[Brief description of the drawings]
FIG. 1 is a diagram showing a measurement terminal and an outline at the time of measurement.
FIG. 2 is a diagram schematically illustrating an example of an apparatus for measuring surface characteristics according to the present invention.
FIG. 3 is a diagram for explaining the configuration of the contact plane.
FIG. 4 is a diagram showing a general mode of a storage box in which soft-type tissue paper is stored.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Storage box, 1A ... Window, 2 ... Sheet, 2A ... Slit, 3 ... Tissue paper, L ... Slit length, X ... Outlet

Claims (5)

It is a tissue paper that is a set of two sheets,
A tissue paper which satisfies the following conditions (A) to (C).
(A) One tissue paper has a rice tsubo of 13 to 20 g / m ² .
(B) The sheet density represented by (one sheet of tissue paper x 2 tsubos × 2) / (paper thickness when two sheets are stacked) is 0.240 g / cm ³ or less.
(C) Olive oil is uniformly applied to a contact plane made of artificial leather, and the average length and breadth of the surface characteristics represented by the average deviation of the measured friction coefficient is 0.065 or less. The condition (C) is:
4 mg of olive oil is uniformly applied to a 10 mm square contact plane made of artificial leather, and the entire contact plane is brought into contact with a paper sample fixed on a horizontal measurement surface made of artificial leather at a contact pressure of 50 gf / cm ^2. In this state, the paper sample is horizontally moved at a speed of 0.1 cm / sec in a direction perpendicular to the length direction or width direction of the contact plane while applying a tension of 20 gf / cm to the paper sample in the moving direction. The average length and breadth of the surface characteristics represented by the average deviation of the coefficient of friction when moved by 2 cm for each measurement surface is 0.065 or less;
The tissue paper according to claim 1, which is: At steel sheet having a circular plane of compression the cross-sectional area 2 cm ² at 2-ply, when compressed with a compressive load 50 gf / cm ² and a thickness TM when compressing the tissue paper in compressive load 0.5 gf / cm ² The tissue paper according to claim 1 or 2, wherein a displacement difference (T0-TM) from the thickness T0 is 0.100 mm or more, and the thickness TM is 0.200 mm or more. The dry tensile strength in the longitudinal direction of one sheet is 150 to 350 cN / 25 mm width, the dry tensile strength in the lateral direction is 80 to 140 cN / 25 mm width, and (longitudinal dry tensile strength) / (horizontal direction) The tissue paper product according to any one of claims 1 to 3, wherein the dry paper has a value of 1.0 to 3.0. The tissue paper according to any one of claims 1 to 4, wherein a pulp fiber having an NBKP compounding ratio of 30 to 80% is a main raw material.

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