JP2015067348A - Pocket tissue and pocket tissue package - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pocket tissue and a pocket tissue package capable of making a consumer feel the features of products such as softness and a high-grade feeling due to tactility when the consumer picks up the pocket tissue and the pocket tissue package by hands.SOLUTION: A problem is solved by a pocket tissue 1 comprising a plural sheets of thin paper 2 being folded and layered and an individual packaging film 3 housing the thin paper 2 and having a surface roughness Ra of 0.2 μm or more and 5.0 μm or less; and a pocket tissue package comprising the pocket tissue 1 and an external packaging film 4 packaging the pocket tissue 1 and having a surface roughness Ra of 0.2 μm or more and 5.0 μm or less.

Description

  The present invention relates to a pocket tissue and a pocket tissue package.

  Conventionally, a thin paper storage body, for example, a pocket tissue, which is folded and laminated so that tissue paper or the like can be pulled out one by one or one set at a time and stored in a packaging material for individual packaging has transparency as a packaging material. It is often used after printing on individual packaging film. As a form of sales of this pocket tissue, a pocket tissue package in which a plurality of pocket tissues are packaged together with a transparent exterior film and the printed portion is limited so that the pocket tissue can be seen is generally used. (See Patent Document 1).

  In addition, so-called lotion tissue in which softness is improved by impregnating thin paper with glycerin or a moisturizing agent has been conventionally used for pocket tissue. When using soft tissue paper such as lotion tissue, it is difficult to imagine the quality of the product, such as its softness and luxury derived from softness, from the appearance of the pocket tissue. It was hard to imagine. Therefore, a device that makes it easy to convey the image of quality to consumers was necessary.

  As an example of such a device, a satin film having a texture and a unique touch like Japanese paper is used for an exterior film by applying a satin emboss on the surface (see Patent Document 2).

JP 2009-286470 A JP 2007-254012 A

  However, the conventional packaging film has a unique texture, but it is insufficient to appeal the softness and luxury of the product with the touch when the pocket tissue or pocket tissue package is grasped by hand. There was a need for improvement. Further, it has been difficult to obtain a high-quality appearance with respect to the pocket tissue or the pocket tissue package.

  Therefore, the present invention has been made in view of such problems, and the purpose of the present invention is to provide product features such as softness and high-quality feeling when a consumer picks up a pocket tissue or a pocket tissue package. It is an object of the present invention to provide a pocket tissue and a pocket tissue package that can be felt by touch and appearance.

In order to solve the above problems, the present invention is grasped by the following configuration.
(1) The pocket tissue of the present invention comprises a plurality of thin paper sheets that are folded and laminated, and an individual packaging film that houses the thin paper, and the individual packaging film has a surface roughness of 0.2 μm or more and 5.0 μm or less. It is characterized by having Ra.

  (2) The pocket tissue of the present invention is characterized in that, in the configuration of (1), the individual packaging film has a TSA softness index of 5 or more and 70 or less.

  (3) The pocket tissue of the present invention is characterized in that, in the configuration of (1) or (2), the individual packaging film has a bending stiffness of 1 μNm to 18 μNm.

  (4) The pocket tissue of the present invention is characterized in that, in any one of the constitutions (1) to (3), the individual packaging film has a 60-degree specular gloss of 0.1% or more and 60% or less. To do.

  (5) In the pocket tissue of the present invention, the thin tissue paper has a TSA softness index of 6.0 or more and 20.0 or less in a configuration of any one of the above (1) to (4). It has a TS750 value of 0 or less and a D value of 2.3 mm / N or more and 4.5 mm / N or less.

  (6) The pocket tissue package of the present invention comprises a pocket tissue and an exterior film that wraps the pocket tissue, and the exterior film has a surface roughness Ra of 0.2 μm or more and 5.0 μm or less. And

  (7) The pocket tissue package of the present invention is characterized in that, in the configuration of (6), the exterior film has a TSA softness index of 10 or more and 70 or less.

  (8) The pocket tissue package of the present invention is characterized in that, in the configuration of (6) or (7), the exterior film has a bending stiffness of 1 μNm to 25 μNm.

  (9) The pocket tissue package of the present invention is characterized in that, in any one of the constitutions (6) to (8), the exterior film has a haze value of 10% to 82%.

  (10) In the pocket tissue package of the present invention, the exterior film has a 60-degree specular gloss of 0.1% or more and 60% or less in any one of the constitutions (6) to (9). And

  (11) The pocket tissue package of the present invention has 30 or more in the L * a * b * color system as viewed from the outer surface of the exterior film in any one of the constitutions (6) to (10). It has an L * value of 90 or less, an a * value of -50 or more and 50 or less, and a b * value of -50 or more and 50 or less.

  According to the pocket tissue and the pocket tissue package of the present invention, when the consumer picks up the pocket tissue or the pocket tissue package, the product such as softness and luxury can be obtained. The effect is to make the features feel by touch and appearance.

The perspective view which shows the external appearance of the pocket tissue which concerns on this invention. The perspective view which shows the external appearance of the pocket tissue package which concerns on embodiment of this invention. (A) (b) The figure which shows the measurement principle of a TSA softness index | exponent (the 1). (A) (b) The figure which shows the measurement principle of a TSA softness index | exponent (the 2). Sectional drawing of the test piece which shows the measurement position of a TSA softness index and TS750 value.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention (hereinafter referred to as embodiments) will be described in detail with reference to the accompanying drawings. Note that the same number is assigned to the same element throughout the description of the embodiment.

(Pocket tissue)
As an example of this embodiment, a pocket tissue that stores tissue paper as thin paper will be described. FIG. 1 is a perspective view of a pocket tissue according to the present invention. As shown in FIG. 1, the pocket tissue 1 has a configuration in which a tissue bundle 21 formed by folding a tissue paper 2 and laminating a plurality of sheets is wrapped by an individual wrapping film 3. In addition, a tissue paper outlet 31 is provided in the longitudinal direction of the substantially central portion of the surface of the pocket tissue 1.

  Although there is no limitation in particular as a base material of the individual packaging film 3, Resin which can be heat-seal | fused, For example, polypropylene, such as unstretched polypropylene (CPP) and biaxially stretched polypropylene (OPP), linear low density polyethylene ( Examples thereof include polyethylene (PE) such as LLDPE), low density polyethylene (LDPE), and high density polyethylene (HDPE), polypropylene, polyethylene terephthalate, polyvinyl alcohol, polystyrene, and ethylene-vinyl alcohol copolymer. Among these, polyethylene is preferable because it is easy to stretch, heat sealability, and cost. Moreover, it is preferable that the individual wrapping film 3 is subjected to a satin finish on at least the outer surface from the viewpoint of giving a unique texture and feel to the surface of the pocket tissue 1 and imparting a high-class feeling.

  When the individual packaging film 3 has a laminated structure, the lamination method is not particularly limited, and a known lamination method such as extrusion lamination (extrusion lamination), wet lamination, dry lamination, or the like can be used. Among these, it is more preferable to use an extrusion laminate that is excellent in terms of breadth of resin selection and cost. In general, the individual packaging film 3 is provided with a printing layer. The printing layer has an outer surface (a surface in contact with the exterior film 4), an inner surface (a surface in contact with the tissue paper 2), and the inside of the laminated structure. Not limited in terms. Preferably, it is an internal surface of a laminated structure. When the printed layer is the outer surface, when the pocket tissue 1 is carried in a bag or the like, the ink may be rubbed and peeled off. Further, when the printing layer is the inner surface, the ink may adhere to the tissue paper 2.

  The thickness of the individual packaging film 3 is 25 μm or more and 75 μm or less, preferably 30 μm or more and 70 μm or less. If the thickness is less than 25 μm, the film becomes too soft and the tissue bundle 21 may be distorted or misaligned. On the other hand, when the thickness exceeds 75 μm, the rigidity is too high, and the texture becomes rugged.

  The surface roughness Ra of the individual packaging film 3 is a value measured according to the method described in JIS B0601 (1994), and is 0.2 μm or more and 5.0 μm or less, preferably 0.4 μm or more and 5.0 μm or less. More preferably, it is 0.5 μm or more and 3.0 μm or less. When the surface roughness Ra is less than 0.2 μm, the unevenness on the surface of the individual packaging film 3 is small, so that a high-quality touch is not obtained. On the other hand, if it exceeds 5.0 μm, the unevenness on the surface of the individual wrapping film 3 is large, and the touch becomes worse.

  In addition, if the individual packaging film 3 satisfy | filling surface roughness Ra exists in at least one part of an outer surface, the effect of this invention can be acquired. That is, if there is an individual packaging film 3 that satisfies the surface roughness Ra of the present invention even on a part of the outer surface of the pocket tissue 1, it corresponds to the pocket tissue 1 of the present invention. Similarly, if at least a part of the outer surface of the individual packaging film 3 has the individual packaging film 3 that satisfies the values of the TSA softness index, bending stiffness, and 60 degree specular gloss, the effects of the present invention can be obtained. From the viewpoint of improving the recognition of the product features of the pocket tissue 1 by tactile sensation, the area of the individual packaging film 3 that satisfies the above range of the present invention is 10% or more of the outer surface area of the individual packaging film 3, more preferably 30% or more. More preferably, it is 50% or more, and most preferably 70% or more.

  The TSA softness index representing the softness of the individual packaging film 3 is measured by the following method. That is, in this measuring method, for example, as shown in FIG. 3A, a tissue softness measuring apparatus (TSA, manufactured by Nippon Luft Co., Ltd.) is used. The test piece 52 of the individual wrapping film 3 is set on the sample base 51 of the tissue softness measuring device 5 and fixed by the sample fixing ring 53 and the rubber lip 54. Next, as shown in FIG. 3 (b), the bladed rotor 55 is pushed from above with a constant and variable force. In this step, the force sensor 56 controls the contact pressure of the blade 55a. When the set force, for example, 100 mN is reached, the bladed rotor 55 rotates on the test piece 52 at a constant and variable speed by the motor 52b. The blade 55 a induces vibration of the test piece 52. The vibration frequency depends on structural dimensions such as creeping and embossing and the rotational speed of the blade. Induction of horizontal vibration of the blade 55a itself (resonance frequency: approximately 6500 Hz) is caused by momentary interruption by the convex portion 57 of the test piece and vibration of the blade 55a when traveling on the surface of the test piece 52. The vibration sensor 51a receives the vibration of the blade 55a and transmits it to an analysis device (not shown). The analysis device derives TS7 from this data, and uses this TS7 as the TSA softness index.

  FIG. 4A is a diagram showing the movement of the blade 55a when the convex portion 57 of the test piece is hard (the individual wrapping film 3 is hard), and the width of vibration of the blade 55a becomes wide, that is, TSA softness. The index grows. FIG. 4B is a diagram showing the movement of the blade 55a when the convex portion 57 of the test piece is soft (the individual wrapping film 3 is soft), and the width of vibration becomes narrow, that is, the TSA softness index is small. Become.

  In the present embodiment, a sample of the individual packaging film 3 was collected and measured five times, and the average value was taken as the TSA softness index of the individual packaging film 3. The TSA softness index of the individual packaging film 3 is 5 to 70, preferably 15 to 60, and more preferably 25 to 55. By having the TSA softness index within the above range, the individual packaging film 3 can make the product features such as softness and luxury feel by touch when the consumer picks up the pocket tissue 1.

According to the method described in ISO 2493, the bending stiffness of the individual wrapping film 3 is a test piece with a width of 38 mm and a length of 100 mm when the bending angle is 15 degrees and the bending length (span of the sample stage) is 10 mm. The measured value was the bending resistance (load), and the bending stiffness was determined by the following formula. Bending stiffness (μNm) = 60 × bending resistance (mN) × bending length 10 (mm) ² ÷ (π × bending angle 15 (°) × sample width 38 (mm)). In this embodiment, four test pieces were stacked and measured, and the value obtained by converting the total value per sheet was defined as the bending stiffness (μNm) of the individual packaging film 3. The bending stiffness of the individual packaging film 3 is 1 μNm or more and 18 μNm or less, preferably 2.5 μNm or more and 9.0 μNm or less. By having the bending stiffness within the above range, the individual packaging film 3 can obtain a firm feeling while suppressing the feeling of tingling. In addition, when the sample is small and the length of the test piece 100 mm cannot be ensured, it may be shortened within a range that does not affect the bending stiffness result.

  The 60-degree specular gloss of the individual packaging film 3 is a value measured according to JIS Z 8741. The 60 degree specular gloss of the individual wrapping film 3 is 0.1% or more and 60% or less, preferably 0.1% or more and 25% or less, and more preferably 0.1% or more and 15% or less. Since the individual wrapping film 3 having a 60-degree specular gloss in the above range has a low glossiness, a high-grade appearance with a subdued hue is obtained.

(Thin paper)
As the tissue paper 2 included in the individual wrapping film 3, a known paper can be used. The tissue paper 2 preferably has a ply number of 2 or more and 4 or less. In addition, the tissue paper 2 has a basis weight per ply of 10 g / m ² or more and 30 g / m ² or less, preferably 10 g, based on JIS P 8124, from the viewpoint of preventing tearing when pulling out from the tissue paper outlet 31. / M ² or more and 20 g / m ² or less, more preferably 12 g / m ² or more and 18 g / m ² or less. When the basis weight exceeds the above range, the tissue paper 2 is difficult to tear, but becomes hard, so the feeling of use is inferior.

  The tensile strength in the machine direction (MD direction, fiber direction) of the tissue paper 2 in a dry state based on JIS P8113 is 2.0 N / 25 mm or more and 5.0 N / 25 mm or less, preferably 2.3 N / 25 mm or more and 4.7 N / 25 N or less, more preferably 2.5 N / 25 mm or more and 4.5 N / 25 mm or less, and the tensile strength in the transverse direction (CD direction, orthogonal to the fiber) is 0.5 N / 25 mm or more and 2.0 N / 25 mm or less, Preferably they are 0.6N / 25mm or more and 1.8N / 25mm or less, More preferably, they are 0.7N / 25mm or more and 1.6N / 25mm or less. If it is less than these lower limits, the tissue paper 2 will break, and if it exceeds the upper limit, the texture of the tissue paper 2 will deteriorate.

  In the present embodiment, the tissue paper 2 is exemplified as the thin paper stored in the pocket tissue 1, but other thin paper may be used, and examples thereof include toilet paper, paper towel, kitchen towel, and wiper. Of these, lotion tissue is preferred because it is often employed as a high-end product.

  A lotion tissue is a tissue in which these components are supported by applying, impregnating, or spraying a chemical solution to a base material. Examples of the components contained in the chemical solution include components that are commonly used, for example, a moisturizing agent composed of a polyhydric alcohol such as silicone oil or glycerin, or a softening agent such as a quaternary ammonium salt. The application amount of the component excluding moisture in the lotion chemical solution to the substrate is 5% or more and 35% or less, preferably 10% or more and 30% or less, more preferably 15% or more and 25% or less. If it is less than the lower limit value, a moist feeling as a lotion tissue cannot be obtained, and if it exceeds the upper limit value, the strength of the lotion tissue is weakened and the usability may be inferior.

  Moreover, it is also preferable to emboss the tissue paper 2 from the viewpoint of improving flexibility, sublimation, absorbability, and the like.

  The TSA softness index indicating the softness of the thin paper, the TS750 value indicating the smoothness, and the D value indicating the stiffness are measured by a measuring method using the above tissue softness measuring apparatus (TSA, manufactured by Nippon Luft Co., Ltd.). . FIG. 5 is a cross-sectional view of the test piece 52 showing the measurement positions of the TSA softness index and TS750 value. As shown in FIG. 5, the peak P1 of the TSA softness index is a value indicating the softness of the material of the test piece 52, whereas the peak P2 of the TSA 750 value indicates the strength of smoothness and embossing (concaveness). It is a value having a correlation, and it means that the larger the numerical value, the rougher or stronger embossing.

  The D value means that the bladed rotor 55 is applied to the test piece 52 in the vertical direction with a minimum force of 100 mN and a maximum force of 600 mN in the measurement with the tissue softness measuring device. Is the amount of deformation / displacement (mm / N) representing the height of the depression. Moreover, D value has a correlation with the result of a tensile strength test, and it means that it is so hard that a numerical value is small.

  In the tissue paper 2, the TSA softness index is 6.0 or higher and 20.0 or lower, preferably 6.0 or higher and 17.0 or lower, more preferably 7.0 or higher and 14.0 or lower. The TS750 value is 7.0 or more and 20.0 or less, preferably 7.0 or more and 18.0 or less, and more preferably 8.0 or more and 16.0 or less. The D value is 2.3 mm / N or more and 4.5 mm / N or less, preferably 2.5 mm / N or more and 4.2 mm / N or less, more preferably 2.6 mm / N or more and 3.8 mm / N or less. By limiting the TSA softness index, the TS750 value, and the D value to the above ranges, the paper is soft and has a unique texture and becomes a high-quality thin paper.

(Pocket tissue packaging)
In the present embodiment, as shown in FIG. 2, the pocket tissue packaging 10 is configured such that one or a plurality of pocket tissues 1 are packaged together by an exterior film 4. Further, when the pocket tissue package 10 is suspended and displayed, the suspension portion 42 is provided at a substantially central portion of the header portion 41, which is a penetrating hole such as a circle or an ellipse. The number of pocket tissue 1 to be packaged together is not particularly limited, but the pocket tissue package 10 to be hung and displayed is generally an even number such as 2, 4, 6 but may be an odd number. In addition, the pocket tissue package 10 that is displayed without being suspended is generally in the form of 10 to 20 packages.

  The base material of the exterior film 4 is not particularly limited, and a heat-sealable resin can be used in the same manner as the base material of the individual packaging film 3. Among these, polypropylene or polyethylene is preferable from the viewpoint of cost. Moreover, in order to suppress glossiness and obtain a high-quality texture, the exterior film 4 is preferably subjected to embossing such as hairline processing and mat processing on at least the outer surface. Moreover, you may perform a satin embossing process similarly to an individual packaging film.

  When the exterior film 4 has a laminated structure, the lamination method is not particularly limited, and a known lamination method can be used in the same manner as the individual packaging film 3. Among these, it is preferable to use a dry laminate from the viewpoint of productivity and cost. In addition, as with the individual packaging film 3, it is common to provide a printed layer on the exterior film 4, but the printed layer is formed on the outer surface (surface that the consumer touches) and the inner surface (the individual film 3). And the inner surface of the laminated structure is not limited. Preferably, it is an internal surface of a laminated structure. When the printed layer is the outer surface, when the pocket tissue package 10 is carried in a bag or the like, the ink may be removed by rubbing. Moreover, when a printing layer is an inner surface, it may rub against the individual packaging film 3 and ink may peel off.

  The thickness of the exterior film 4 is 25 μm or more and 75 μm or less, preferably 30 μm or more and 70 μm or less. When the thickness is less than 25 μm, the strength is low, and when the thickness exceeds 75 μm, the rigidity becomes high, so that it becomes a rough feel.

  The surface roughness of the exterior film 4 is a value measured in the same manner as the individual packaging film 3, and is 0.2 μm or more and 5.0 μm or less, preferably 0.4 μm or more and 5.0 μm or less, more preferably 0.5 μm or more. 3.0 μm or less. If the surface roughness is less than 0.2 μm, the unevenness of the surface of the exterior film 4 is small, so that a high-quality touch cannot be obtained. On the other hand, when the thickness exceeds 5.0 μm, the surface of the exterior film 4 has large irregularities, and the touch becomes worse.

  In addition, if the exterior film 4 satisfy | filling surface roughness exists in at least one part of an outer surface, the effect of this invention can be acquired. That is, if there is the exterior film 4 that satisfies the surface roughness of the present invention even on a part of the outer surface of the pocket tissue package 10, the pocket tissue package 10 of the present invention is applicable. Similarly, if at least a part of the outer surface of the exterior film 4 has the exterior film 4 that satisfies the values of the TSA softness index, bending stiffness, and 60 degree specular gloss, the effects of the present invention can be obtained. From the viewpoint of improving the recognition of the product features of the pocket tissue package 10 by tactile sensation, the area of the exterior film 4 that satisfies the above range of the present invention is 10% or more of the outer surface area of the exterior film 4, more preferably 30% or more. More preferably, it is 50% or more, and most preferably 70% or more.

  The TSA softness index of the exterior film 4 is a value measured in the same manner as the individual packaging film 3, and is 10 or more and 70 or less, preferably 25 or more and 50 or less. If the exterior film 4 satisfying the TSA softness index is on at least a part of the surface, the effect of the present invention can be obtained. That is, if there is the exterior film 4 that satisfies the TSA softness index of the present invention even on a part of the outer surface of the pocket tissue package 10, it corresponds to the pocket tissue package 10 of the present invention. Similarly, at least a part of the surface of the exterior film 4 has the following bending stiffness, haze value, 60 degree specular gloss, L * value, a * value, b * value in the L * a * b * color system. If there exists the exterior film 4 which satisfy | fills, the effect of this invention can be acquired. From the viewpoint of improving the recognizability of the product features of the pocket tissue 1 by tactile sensation, the area of the pocket tissue package 10 that satisfies the above range of the present invention is 10% or more of the surface area of the individual packaging film 3, more preferably 30% or more. More preferably, it is 50% or more, and most preferably 70% or more.

  The bending stiffness of the exterior film 4 is measured according to the method described in ISO 2493, similarly to the individual packaging film 3, and is 1 μNm to 25 μNm, preferably 2.5 μNm to 15.0 μNm. By having the bending stiffness within the above range, the exterior film 4 containing the pocket tissue 1 has a low feeling of tingling when touched by hand, and a firm feeling can be obtained. The quality information of the pocket tissue 1 can be obtained through the tactile sensation. Can be obtained.

The haze value of the exterior film 4 is a value measured according to the method described in JIS K7136, and is 10% to 82%, preferably 20% to 82%, more preferably 30% to 75%. is there. The haze value is calculated by the following formula [1].
Haze value = (diffuse transmittance / total light transmittance) × 100 (%) [1]
When the haze value of the exterior film 4 is within the above range, the exterior film 4 has a high-quality appearance.

  The 60-degree specular gloss of the exterior film 4 is measured according to JIS Z 8741 as in the case of the individual packaging film 3, and is 0.1% to 60%, preferably 8% to 30%. . When the 60 degree specular glossiness of the exterior film 4 is in the above range, the exterior film 4 has a high-quality appearance.

  In the L * a * b * color system, the pocket tissue package 10 viewed from the outer surface of the exterior film 4 has an L * value of preferably 30 or more and 90 or less, and more preferably 30 or more and 80 or less. The a * value is preferably −50 to 50 and the b * value is preferably −50 to 50, more preferably the a * value is −40 to 40 and the b * value is −40 to 40. It is. Here, the L * value, a * value, and b * value in the L * a * b * color system are values obtained according to ISO 2470. When the L * value, a * value, and b * value in the L * a * b * color system of the exterior film 4 are within the above ranges, the exterior film 4 has a more luxurious appearance.

  Hereinafter, the present invention will be described more specifically with reference to examples and comparative examples.

[Example 1]
An individual packaging film was prepared by laminating a PE resin embossed with a satin texture using polyethylene (PE) resin by an extrusion laminating method and a linear low density polyethylene (LLDPE) resin. Then, using this individual packaging film, a tissue bundle (2 plies and 12 sets) was packaged with an actual processing machine to obtain pocket tissue.

[Example 2] to [Example 6], [Comparative Example 1] to [Comparative Example 3]
In Examples 2 to 6 and Comparative Examples 2 to 3, individual packaging films were produced with the compositions shown in Table 1, and pocket tissue for comparative tests was obtained according to the above production method. Moreover, the comparative example 1 used the commercial item of the pocket tissue packaging body which laminated | stacked OPP (biaxially-stretched polypropylene) and CPP (non-stretched polypropylene) by the dry laminating method. About Examples 1-6 and Comparative Examples 1-3, measurement / calculation of various physical properties and sensory evaluation were performed, and the results are shown in Table 1.

[Example 7]
An exterior film was prepared by laminating OPP (biaxially stretched polypropylene) and CPP (non-stretched polypropylene) matted using a polyurethane adhesive by a dry laminating method. Then, using this exterior film, the pocket tissue obtained in Example 5 was packaged with an actual processing machine to obtain a pocket tissue package.

[Example 8] to [Example 13], [Comparative Example 4] to [Comparative Example 6]
In Examples 8-13, the exterior film was produced with the composition of Table 2, and the pocket-tissue package for comparative tests was obtained according to said manufacturing method. In Comparative Examples 4 to 6, a commercially available pocket tissue package was used. About Examples 7-13 and Comparative Examples 4-6, measurement / calculation of various physical properties and sensory evaluation were performed, and the results are shown in Table 2.

(Surface roughness Ra)
The surface roughness Ra was measured using a laser microscope (ultra-depth color 3D shape measurement microscope VK-9510, manufactured by KEYENCE) in accordance with the method described in JIS B0601 (1994). In addition, observation / measurement software (VK Viewer, manufactured by KEYENCE) was used. Measurement conditions were 1,000 times magnification (standard objective lens using 50 times magnification), measurement mode was color ultra-deep, gain was automatically adjusted by Auto set, measurement pitch was set to 0.01 μm, and measurement was performed. . From the obtained image (width: 270 μm × length: 202 μm), an image analysis software (VK Analyzer, manufactured by KEYENCE) was used to determine the surface roughness (all areas were specified using the measurement analysis menu). .

(TSA softness index)
The TSA softness index was measured using a tissue softness measuring device (product name: TSA, manufactured by Nippon Luft Co., Ltd.) by the method described above. The test piece was formed in a circle having a diameter of 113 mm, and the measurement conditions were a measurement algorithm facial 1, a pressure of 100 (mN), and a blade rotation speed of 2.0 (/ second).

(Measurement of bending stiffness)
The bending stiffness was measured using an L & W bending tester (manufactured by Lorentzen & Wettre) in accordance with the method described in ISO 2493. The individual wrapping film is a test piece having a width of 38 mm and a length of 100 mm. The measurement value when the bending angle is 15 degrees and the bending length (span of the sample stage) is 10 mm is the bending resistance (load). I asked for bending stiffness. Bending stiffness (μNm) = 60 × bending resistance (mN) × bending length 10 (mm) ² ÷ (π × bending angle 15 (°) × sample width 38 (mm)). In this embodiment, four test pieces were stacked and measured, and a value obtained by converting the total value per sheet was defined as bending stiffness (μNm). In addition, the exterior film was measured in a state in which two test pieces in the MD direction and two test pieces in the CD direction were laminated, and the value obtained by dividing the measured value by 4 and converting it per sheet was expressed as bending stiffness (μNm). did.

(Measurement of 60 degree specular gloss)
The 60-degree specular gloss was measured based on the following measurement conditions and analysis conditions using a gloss meter (Gloss Meter VG7000, manufactured by Nippon Denshoku Industries Co., Ltd.) in accordance with the method described in JIS Z8741. . The measurement conditions were measurement method: reflection, measurement angle: incident angle of 60 degrees and light receiving angle of 60 degrees. Both the individual packaging film and the exterior film were measured for the outer surface in a single sheet state.

(Measurement of haze value)
The haze value was measured using a haze meter (NDH5000 manufactured by Nippon Denshoku Industries Co., Ltd.) in accordance with the method described in JIS K7136.

(Measurement of color)
The color measurement in the L * a * b * color system is based on the method described in ISO 2470, and the following measurement is performed using a spectrocolorimeter (CMS-35SPX, manufactured by Murakami Color Research Laboratory Co., Ltd.). Based on conditions and analysis conditions. The measurement conditions were as follows: light source: C light source, viewing angle: 2 degrees, UV-IN, and dedicated white plate use conditions. Each value of the L * a * b * color system in the pocket tissue package was measured for a pocket tissue exterior film where the individual packaging film and the exterior film were in close contact with each other and the haze value was low.

(sensory evaluation)
In the pocket tissues of Examples 1 to 6 and Comparative Examples 1 to 3, the pockets of Examples 7 to 13 and Comparative Examples 4 to 6 were used for a high-quality touch feeling, the feeling of the individual packaging film and the solid feeling of the individual packaging film. In tissue packaging, a comprehensive sensory evaluation by experts on the following five levels is performed for high-quality tactile sensation, high-grade appearance, easy-to-see pocket tissue, the sensation of exterior films, and the firmness of exterior films. I went there.
5: Very good, 4: Excellent, 3: Normal, 2: Inferior, 1: Notably inferior

  As is clear from the results shown in Table 1, Examples 1 to 6 of the present invention have a sense of luxury and a sense of luxury while having a high-quality touch and a high-quality appearance as compared with the pocket tissues of Comparative Examples 1 to 3. Was low and the feeling was good. Further, as is apparent from the results shown in Table 2, Examples 7 to 13 of the present invention have a high-quality touch and a high-quality appearance as compared with the pocket tissue package of Comparative Examples 4 to 6. On the other hand, the feeling of tingling was low, and the pocket tissue was easy to see and firmly.

  As mentioned above, although this invention was demonstrated using embodiment, it cannot be overemphasized that the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above-described embodiments. Further, it is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Pocket tissue 10 Pocket tissue packaging 2 Tissue paper 21 Tissue bundle 3 Individual packaging film 31 Tissue paper outlet 4 Exterior film 41 Header part 42 Locking part 5 Tissue softness measuring device 51 Sample stand 51a Vibration sensor 52 Test piece 53 Sample Fixing ring 54 Rubber lip 55 Bladed rotor 55a Blade 55b Motor 56 Force sensor 57 Test piece convex part P1 TSA softness index peak P2 TS750 peak

Claims (11)

A plurality of thin paper sheets folded and laminated,
An individual wrapping film for storing the thin paper,
The pocket tissue, wherein the individual packaging film has a surface roughness Ra of 0.2 μm or more and 5.0 μm or less.   The pocket tissue according to claim 1, wherein the individual packaging film has a TSA softness index of 5 or more and 70 or less.   The pocket tissue according to claim 1 or 2, wherein the individual packaging film has a bending stiffness of 1 µNm or more and 18 µNm or less.   The pocket tissue according to any one of claims 1 to 3, wherein the individual packaging film has a 60-degree specular gloss of 0.1% to 60%.   The thin paper has a TSA softness index of 6.0 to 20.0, a TS750 value of 7.0 to 20.0, and a D value of 2.3 mm / N to 4.5 mm / N. The pocket tissue according to any one of claims 1 to 4, characterized in that: Pocket tissue,
An exterior film for packaging the pocket tissue,
The pocket tissue packaging body, wherein the exterior film has a surface roughness Ra of 0.2 μm or more and 5.0 μm or less.   The pocket tissue package according to claim 6, wherein the exterior film has a TSA softness index of 10 to 70.   The pocket tissue package according to claim 6 or 7, wherein the exterior film has a bending stiffness of 1 µNm or more and 25 µNm or less.   The pocket tissue package according to any one of claims 6 to 8, wherein the exterior film has a haze value of 10% or more and 82% or less.   The pocket tissue package according to any one of claims 6 to 9, wherein the exterior film has a 60-degree specular gloss of 0.1% to 60%.   When viewed from the outer surface of the exterior film, in the L * a * b * color system, an L * value of 30 to 90, an a * value of −50 to 50, and b of −50 to 50 The pocket tissue package according to any one of claims 6 to 10, which has a value.

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