JP6415085B2 - Tissue paper storage box - Google Patents

Description

  The present invention relates to a thin paper storage box excellent in cosmetics.

In recent years, in the field of thin paper such as tissue paper and kitchen paper, high cosmetics are required for the appearance of a box for storing thin paper in order to urge consumers to purchase.
For example, a thin paper storage box in which the glossiness of the outer surface of the box is increased is known as an example of giving such a box a high cosmetic property (see, for example, Patent Document 1). )
Further, for the purpose of further improving the cosmetics, a thin paper storage box is known in which a paperboard constituting a box is embossed (see, for example, Patent Document 2).

JP 2009-132432 A JP 2008-87854 A

  However, when embossing is performed, in order to form an embossing with a high embossing height, it is necessary to increase the embossing pressure by using an embossing roll as a relief plate and an intaglio plate, which may damage the paper surface during processing. In addition, there is a method of performing simple embossing with an intaglio and a lithographic plate on-line, but in this case there is a problem that the embossing height is low, the three-dimensional effect is poor, and cosmetics cannot be obtained. In this case, especially when the basis weight of the base paper is reduced, the paper thickness of the base paper becomes thin, and this tendency becomes remarkable.

  Accordingly, the present invention has been made to solve such problems, and an object of the present invention is to provide a thin paper storage box with excellent cosmetic properties while suppressing damage to the paper surface during embossing. There is.

  As a result of diligent research to solve the above problems, the present inventors have found that the above problems can be solved by setting the emboss height to a specific range and applying a gradation pattern around the convex emboss. The present invention has been completed.

In order to achieve the above object, the thin paper storage box according to claim 1 is a thin paper storage box comprising a paper box for storing thin paper, wherein the portion of the ground having the largest area is JIS. The 60 degree specular gloss based on K 7105 is 70 to 90, the L * value in the L * a * b * color system is 80 to 95, and the paperboard constituting the box has a height. Convex embossing is formed by press working of 10 to 60 μm, and the top surface of the convex embossing has an L * value of 80 to 95 in the L * a * b * color system, and around the convex embossing, A gradation pattern that is gradually darkened toward the convex emboss is provided.

Thin paper storage box according to claim 2, according to claim 1, the basis weight of the paperboard constituting the box body, characterized in that a 350~450g / m ^2.

The thin paper storage box according to claim 3 is the surface of the box according to claim 1 or 2 , wherein the area of the convex emboss is the same as the area of the top surface in plan view. It is characterized by being within 4%.

According to the present invention, while suppressing breakage of the paper surface of the embossing, it is possible to obtain an embossing having a three-dimensional appearance, and the convex shape of the convex embossing formed on the box, facilities around the convex embossing Due to a synergistic effect with the gradation pattern, an unprecedented cosmetic beauty can be obtained.

It is a perspective view which shows the external appearance of the thin paper storage box which concerns on this invention. It is a front view which shows the long side of a box. It is a partially expanded perspective view which shows a convex emboss and a gradation pattern.

Hereinafter, the form for implementing the thin paper storage box which concerns on this invention is demonstrated in detail.
1 to 3 show an example of an embodiment of a thin paper storage box according to the present invention. FIG. 1 is a perspective view showing an appearance of the thin paper storage box according to the present invention, and FIG. 2 shows a long side of the box. FIG. 3 is a partially enlarged perspective view showing convex embossing and a gradation pattern.

The thin paper storage box of the present invention comprises a paper box 1 for storing thin paper.
The thin paper stored in the box 1 may be any of household, commercial, industrial facial tissue, toilet paper, paper towel, table napkin, and other sanitary paper and paper or non-woven wipers. A sheet shape such as a V-shaped fold, a C-shaped fold, a Z-shaped fold, or a roll shape may be used.

  If the box 1 is made of paper, its size, shape and the like are not particularly limited. In this example, the top surface 4 having a thin paper outlet 3 formed by a cut line 2 such as a perforation, A rectangular parallelepiped structure comprising a bottom surface 5 opposite to the top surface 4, a long side surface 6 having long sides of the top surface 4 and the bottom surface 5, and a short side surface 7 having short sides of the top surface 4 and the bottom surface 5. It has become.

  The type of paperboard constituting the box 1 is not particularly limited as long as it is used for a paper box (decorative box). For example, white balls (coat balls, A white balls) and manila balls (high-quality white paperboard, Special white paperboard, general Manila ball), etc. can be used. In particular, a coated ball is preferred from the viewpoints of appearance, printing suitability, and economy.

The basis weight of the paperboard measured according to JIS P 8124 is 350 to 450 g / m ² , more preferably 400 to 450 g / m ² . In the case of simple embossing, if the basis weight is less than 350 g / m ² , the paper thickness becomes thin and it becomes difficult to obtain the emboss height. On the other hand, if the basis weight exceeds 450 g / m ² , the economic efficiency is deteriorated.

  The box body 1 has a 60 ° specular glossiness of 70 to 90 based on JIS K 7105, more preferably 80 to 90. If the gloss level is less than 70, a high-class feeling cannot be felt and the cosmetic properties are inferior. On the other hand, if the glossiness exceeds 90, a high-grade feeling due to high gloss cannot be obtained, resulting in poor economic efficiency.

As a method of obtaining the above glossiness, a wet or plastic coating layer is pressure-bonded to a mirror-finished heating drum (cast drum), and a mirror-finished surface is simultaneously dried. A cast method (cast coat) to obtain high gloss by copying the film, or by dissolving the resin on the printed surface with a roll coater, roll coating and drying, and a mirror-gloss metal roll or flat plate, or endless Examples thereof include press processing (press coating) in which heat pressing is performed with a steel belt and the like, peeled off after a predetermined time, and imparts high gloss to the printed surface.
In addition, as a method for increasing the glossiness, there is a UV varnishing process in which UV varnish is applied and then irradiated with UV. However, the glossiness and whiteness are lowered by UV irradiation, and desired cosmetic properties are obtained. Is not suitable in the present invention.

  The box 1 has an L * value in the L * a * b * color system of 80 to 95. Within this range, the difference from the gradation pattern described later becomes clear, and the cosmetics are improved. The a * value is preferably 0.1 to 0.3, and the b * value is preferably −0.1 to −0.3. Here, the “L * a * b * color system” referred to in the present invention is a color system defined by CIE (International Lighting Commission) 1976 (JIS Z 8729). The L * value, a * value, and b * value in the L * a * b * color system can be measured using a color difference meter. The L * value is a lightness index, and the a * value and the b * value are perceptual chromaticity indices.

The box 1 has a whiteness degree of 70 to 80, preferably 75 to 80 based on JIS P 8148. Within this range, the difference from the gradation pattern described later becomes clear, and the cosmetics are improved.
In addition, the glossiness, L * a * b * color system and whiteness of the box 1 in the present invention are values of the portion of the ground having the largest area of the box 1.

A convex emboss 8 is formed on the box 1 by embossing the paperboard constituting the box 1. The height of the convex emboss 8 is 10 to 60 μm, more preferably 30 to 60 μm. If the height of the convex emboss 8 is less than 10 μm, the three-dimensional effect is poor and high cosmetic properties cannot be obtained. On the other hand, if the height of the convex emboss 8 exceeds 60 μm, it is necessary to increase the embossing pressure by making the embossing roll or plate into a relief and intaglio, and the paper surface may be damaged during processing. Here, the height of the convex emboss 8 is the distance from the non-convex embossed portion to the highest portion of the top surface 9 of the convex emboss 8.
About the convex embossing 8, it can give by performing press processing with the embossing roll or plate of a flat plate and an intaglio, for example with respect to paperboard.

The convex emboss 8 may be formed on any one of the five surfaces excluding the bottom surface 5 of the box 1, and is formed on two or more of the five surfaces excluding the bottom surface 5 of the box 1. It is preferable.
The area of the convex emboss 8 is 4% or less, more preferably 3% or less of the top surface 9 in a plan view with respect to the surface of the box body to which the convex emboss 8 is attached . When the area of the convex embossing 8 per surface of the box exceeds 4%, the convex embossing 8 becomes inconspicuous and the cosmetics are inferior.

  A gradation pattern 11 that is gradually darkened toward the contour 10 of the convex emboss 8 (thinly becomes thinner toward the direction away from the convex emboss 8) is provided around the convex emboss 8. As a printing method for applying the gradation pattern 11, known printing methods such as gravure printing, flexographic printing, and offset printing are used.

The gradation pattern 11 only needs to be formed on any one of the five surfaces except the bottom surface 5 of the box 1, and is formed on two or more of the five surfaces except the bottom surface 5 of the box 1. It is preferable.
The area of the gradation pattern 11 is within 10%, more preferably within 2.5% with respect to one surface of the box. If the area of the gradation pattern 11 per box exceeds 10%, the gradation of gradation is difficult to break when printing in contact with the emboss.

The convex emboss 8 has an L * value in the L * a * b * color system of the top surface 9 of 80 to 95, and the gradation pattern 11 has an L * value of 77 to 77 in the L * a * b * color system. 92.
The difference between the L * value of the convex emboss 8 and the L * value of the gradation pattern 11 where the gradation pattern 11 is in contact with the convex emboss 8 is 3 or more, more preferably 4 or more. If the difference in L * value is less than 3, the shape of the convex emboss 8 is not noticeable and the cosmetics are inferior.

  EXAMPLES The present invention will be described below with reference to examples, but the present invention is not limited to the following examples. The test methods commonly used in the examples and comparative examples are as follows.

(1) Basis weight Measured according to JIS P 8124.
(2) Glossiness Specular glossiness at 60 degrees was measured according to JIS K 7105.
(3) L * a * b * color system In accordance with the method described in JIS Z 8722, it was measured using a spectrocolorimeter (CMS-35SPX type, Murakami Color Research Laboratory Co., Ltd.). The a * value indicates the red direction, the -a * value indicates the green direction, the b * value indicates the yellow direction, and the -b * value indicates the blue direction.
(4) Whiteness The whiteness was measured in accordance with JIS P 8148 “Paper, paperboard and pulp—Method of measuring ISO whiteness (diffuse blue light reflectance)”.
(5) Printing of gradation pattern and creation of convex embossing After a gradation pattern was printed on a paper board by offset printing, pressing was performed with an intaglio and a lithographic plate engraved with the pattern to create convex embossing. In Comparative Example 3, a monochrome pattern was printed instead of a gradation pattern.
(6) Evaluation (cracking of paper)
After printing the gradation pattern, it was evaluated whether the surface of the paperboard was cracked with respect to the paperboard on which the convex emboss was created. The results are shown in Table 1.
(Beauty)
The box made of the obtained paperboard was subjected to a sensory evaluation of cosmetics. The evaluation was performed by 20 panelists and judged according to the following criteria. The most popular opinion is the result of the evaluation, and the results are shown in Table 1.
○: High cosmetic quality is felt.
Δ: Not very cosmetic.
X: Almost no cosmetics.

As is clear from the results shown in Table 1, the thin paper storage box of Example 1 felt no high cracking on the surface of the paper board and high cosmetics. That is, the thin paper storage box of the present invention can obtain excellent cosmetic properties while preventing damage to the paper surface.
On the other hand, Comparative Example 1 in which the height of the convex embossing is low does not cause cracks on the surface of the paper board, but the cosmetic property is inferior, and Comparative Example 2 in which the height of the convex embossing is high improves the cosmetics. Cracks occurred on the surface of the paper board. Further, in Comparative Example 3 in which a monochrome pattern was printed around the convex emboss, almost no cosmetics were felt. Further, in Comparative Example 4 in which UV varnishing was performed on the paperboard, glossiness and whiteness were lowered by UV varnish treatment, and almost no cosmetics were felt.

DESCRIPTION OF SYMBOLS 1 Box body 2 Cut line 3 Outlet 4 Top surface 5 Bottom surface 6 Long side surface 7 Short side surface 8 Convex emboss 9 Top surface 10 Outline part 11 Gradation pattern

Claims (3)

In a thin paper storage box comprising a paper box for storing thin paper,
The portion of the ground having the largest area of the box body has a 60-degree specular glossiness of 70 to 90 based on JIS K 7105, and an L * value in the L * a * b * color system of 80 to 95. ,
On the paperboard constituting the box, convex embossing is formed by pressing with a height of 10 to 60 μm,
The top surface of the convex emboss has an L * value in the L * a * b * color system of 80 to 95,
A thin paper storage box, characterized in that a gradation pattern that gradually increases toward the convex emboss is provided around the convex emboss. ^2. The thin paper storage box according to claim 1, wherein the paperboard constituting the box has a basis weight of 350 to 450 g / m < ² >. 3. The thin paper according to claim 1, wherein an area of the convex emboss is 4% or less with respect to the surface of the box body to which the convex emboss is attached. Storage box.

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