JP2020196480A - Packaging structure for absorbent article - Google Patents

Abstract

To provide a packaging structure that does not cause a user to feel a significant difference between texture of an absorbent substance which is felt by the user before opening a package and texture of an absorbent article which is felt by the user when taking the absorbent article out from the package.SOLUTION: A packaging structure for an absorbent article is formed by storing an absorbent article in a package. A coefficient of dynamic friction of an exterior surface of the absorbent article stored in the package with respect to a pseudo-skin simulating a human skin is smaller than a coefficient of dynamic friction of an outer surface of the package with respect to the pseudo-skin by 0.10 or less.SELECTED DRAWING: Figure 1

Description

The present invention relates to a packaging structure for an absorbent article.

Generally, packaging structures are known that include a package that houses absorbent articles and has a printed outer surface. A packaging structure including an absorbent article using a non-woven fabric having a low coefficient of friction as an exterior surface is disclosed in order to improve the texture of the absorbent article (Patent Document 1).

JP-A-2003-220660

By the way, the absorbent article contained in the package has the feel when the user touches the surface of the package, the texture of the absorbent article before opening imagined from the information displayed on the surface of the package, and when the package is opened. There may be a difference from the texture of the absorbent article that you actually touch and feel. In particular, when there is a large difference between the texture of the absorbent article that the user imagined before opening and the texture of the absorbent article that he actually feels, a sense of discomfort occurs, leading to distrust of the information displayed on the package surface. It will lead to a decrease in purchasing motivation from the next time onward.

Therefore, the present invention provides a packaging structure in which there is no great discomfort between the texture of the absorbent substance that the user feels before opening the package and the texture of the absorbent article that the user feels when taking out the absorbent article from the package. The purpose.

The packaging structure of the absorbent article of the present invention is formed by accommodating the absorbent article in a package, and the coefficient of dynamic friction of the exterior surface of the absorbent article contained in the package is the pseudo-skin with respect to the pseudo-skin assuming human skin. It is 0.10 or less smaller than the coefficient of dynamic friction of the outer surface of the package.

In the packaging structure of the absorbent article of the present invention, there is a great sense of discomfort between the texture of the absorbent substance that the user feels before opening the package and the texture of the absorbent article that the user feels when removing the absorbent article from the package. Absent.

FIG. 1 is a perspective view showing a packaging structure of an absorbent article according to the first embodiment of the present invention. FIG. 2 is a cross-sectional view of the package according to the first embodiment of the present invention. FIG. 3 is a diagram showing a method for measuring the coefficient of dynamic friction. FIG. 4 is a cross-sectional view of the package according to the second embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described.
[Embodiment 1]
As shown in FIG. 1, the packaging structure 1 includes a plurality of absorbent articles 3 and a package 5. The plurality of absorbent articles 3 are packaged in a package 5. The absorbent article 3 is, for example, a diaper or a napkin.

The absorbent article 3 includes, for example, an exterior surface 6 formed of an air-through non-woven fabric having a basis weight of 20 g / m ² and a PET (polyethylene terephthalate) / PE (polyethylene) resin (average fiber diameter of 12 μm to 15 μm).
The coefficient of dynamic friction of the exterior surface 6 of the absorbent article 3 with respect to the pseudo-skin assuming human skin is, for example, 0.35 or less. Here, the pseudo-skin assuming human skin refers to artificial skin that imitates the texture of human skin, that is, a substance that reproduces physical properties such as surface unevenness pattern, elasticity, water content, and oil content of human skin. For example, a bioskin plate (A4 hybrid gel 5T-11 × 0.21S, wet coating manufactured by Bulux Co., Ltd.) can be used. The above-mentioned dynamic friction coefficient of the exterior surface 6 of the absorbent article 3 is preferably 0.10 or more and 0.35 or less, and more preferably 0.15 or more and 0.30 or less.

The package 5 faces the front surface 7, the back surface 9 facing the front surface 7, the first side surface 11, the second side surface 13 facing the first side surface 11, the top surface 15, and the top surface 15. It is a hexahedron composed of a bottom surface 17. The front surface 7 of the package 5 includes a perforation 22 forming an opening for opening the package 5 and taking out the absorbent article 3, and a region 24 including the perforation 22. Each surface of the package 5 includes a matte layer 19 on the outermost layer, and the first side surface 11 includes a matte layer 19 and a non-matte layer region 21. In the non-matte layer region 21, for example, the size and the number of a plurality of absorbent articles 3 packaged by the package 5 are described.

As shown in FIG. 2, the package 5 has a film base material layer 25 and an ink layer from the inner surface (absorbent article side surface 23) to the outer surface when used for the packaging structure 1. 27 and the mat layer 19 are laminated in this order.

The film base material layer 25 is a material that is a basis for maintaining the shape and strength when the package 5 is used for the packaging structure 1, and is preferably a film material having flexibility and strength. The material of the film base material layer 25 is, for example, polyethylene, polyamide, polyester, polybutylene terephthalate, or polyethylene terephthalate.

The ink layer 27 is a layer for imparting information on the absorbent article 3 such as a pattern, a pattern, and characters to the package 5. The material of the ink layer 27 is an ink composition. The ink composition contains, for example, carbon black, diamine, polyol, curing agent, organic solvent and the like. The curing agent is, for example, isocyanate. The organic solvent is, for example, toluene. The ink layer 27 can be formed by printing (applying) the above composition on the surface of the film base material layer 25 so as to display a desired pattern, pattern, characters, etc., for example, by a gravure printing method or the like. ..

The mat layer 19 is provided as the outermost layer of the package 5. The matte layer 19 is a layer that creates fine irregularities on the surface of the package 5 to give a matte texture. The mat layer 19 is, for example, a resin layer 31 in which the matting agent 29 is dispersed. The matting agent 29 is, for example, silica, alumina, calcium oxide, calcium carbonate, calcium sulfate, calcium silicate, or carbon black. The resin layer 31 is formed of, for example, an acrylic resin, an epoxy resin, a urethane resin, a polyolefin resin, a fluorine resin, a phenoxy resin, or a silicone resin.
As shown in FIG. 2, the mat layer 19 has fine irregularities formed on the surface due to the plurality of matting agents 29 protruding outward from the resin layer 31. Due to these fine irregularities, light is diffusely reflected on the surface of the mat layer 19 to give a matte texture.

In such a package 5, the dynamic friction of the outer surface of the package (at least one surface of the front surface 7, the back surface 9, the first side surface 11, the second side surface 13, the top surface 15, and the bottom surface 17) against the above-mentioned pseudo-skin. The coefficient is, for example, 0.50 or less, preferably 0.20 or more and 0.45 or less, and more preferably 0.25 or more and 0.40 or less.
The coefficient of dynamic friction of the absorbent article side surface 23 of the package with respect to the above-mentioned pseudo-skin is, for example, 0.50 or less, preferably 0.20 or more and 0.45 or less, and more preferably 0.25. It is 0.40 or less.
Further, the coefficient of kinetic friction of the region 24 including the perforation 22 of the package 5 with respect to the above-mentioned pseudo-skin is, for example, 0.35 or less.

In the packaging structure 1 of the first embodiment, the coefficient of kinetic friction of the exterior surface 6 of the absorbent article 3 housed in the package 5 with respect to the simulated skin assuming human skin is the outer surface of the package 5 (for example, with respect to the simulated skin). , Front 7, back 9, first side 11, second side 13, top 15, bottom 17, at least one surface) less than 0.10 or less.
Since the packaging structure 1 of the first embodiment has the above-described configuration, it is between the texture of the exterior surface 6 of the absorbent article 3 housed in the package 5 and the texture of the outer surface of the package 5. There is no big discomfort. As a result, it leads to a sense of trust in the information displayed on the surface of the package, and it is possible to increase the purchasing motivation from the next time onward.
Further, the packaging structure 1 of the first embodiment can further enhance the purchasing motivation of the user by providing the mat layer 19 on the outermost layer of the package 5.
Further, the packaging structure 1 of the first embodiment increases the texture felt when the user touches the surface of the package by increasing the amount of the matting agent 29 contained in the mat layer 19 on the outermost layer of the package 5. You can also do it.

The above-mentioned dynamic friction coefficient can be measured using, for example, a measuring device 37 as shown in FIG. The measuring device 37 is fixed by winding around the test table 39, the pulley 41 installed on the test table 39, the wire 43 hung on the pulley 41, the weight 45 attached to one end of the wire 43, and the weight 45. The first sample 47 and the second sample 49 arranged between the first sample 47 and the test table 39 are provided. The pulley 41 is a fixed pulley having a fixed axis of rotation.

The other end of the wire 43 is connected to a tensile tester (not shown). The tensile tester is, for example, an autograph (Shimadzu Corporation, model number AG-X).
The weight 45 has a weight of 190 g and has a measurement surface (contact surface) dimension of 30 mm × 100 mm (length × width).

When the first sample 47 is in the form of a film, an air-through non-woven fabric (basis weight: 20 g / m ² ) is attached to the non-measurement surface (weight 45) side of the first sample 47 and then fixed to the weight 45. When the second sample 49 is in the form of a film, an air-through non-woven fabric (basis weight: 20 g / m ² ) is attached to the non-measurement surface (test table 39) side of the second sample 49 and then placed on the test table 39.

The tensile tester of the measuring device 37 is driven, and an external force is applied to the weight 45 around which the first sample 47 is wound and fixed via the wire 43 at a tensile speed of 300 mm / min. The external force gradually increases to give friction to the first sample 47 and reach the maximum load. Immediately after reaching the maximum load, the weight begins to move. Ignoring this maximum load, the relative displacement motion between the contact surfaces is started, and the average load from 10 mm to 30 mm is taken as the dynamic friction force.

Subsequently, the coefficient of dynamic friction is obtained by the following equation (1).
μ _K = F _K / _FP (1)
In the above formula (1), μ _K is the coefficient of dynamic friction, _{F K} is dynamic frictional force [N], _{F P} is the normal force caused by the mass of the weight 45 (= 1.86 [N]) .

The present invention is not limited to the above-described embodiment, and can be variously modified without departing from the gist of the present invention. A modified example of the embodiment of the present invention will be described below, but in the modified example described below, the portion exhibiting the same action and effect as that of the above-described embodiment is given the same reference numerals to detail the portion. The description is omitted, and the following description mainly describes the differences from the embodiments.

[Embodiment 2]
The packaging structure 1 of the second embodiment further includes a mat layer 19 on the absorbent article side surface 23 of the package 5, as shown in FIG. 4, as compared with the packaging structure 1 of the first embodiment. The coefficient of dynamic friction of the absorbent article side surface 23 of this package 5 with respect to the simulated skin assuming human skin is, for example, 0.50 or less, preferably 0.20 or more and 0.45 or less, and more preferably. It is 0.25 or more and 0.40 or less.
Since the packaging structure 1 of the second embodiment has the above-described configuration, the texture of the exterior surface 6 of the absorbent article 3 housed in the package 5 and the texture of the surface of the absorbent article 3 of the package 5 There is no big discomfort between them. As a result, the information displayed on the surface of the package can be further trusted, and the purchase motivation from the next time onward can be further enhanced.

In order to confirm the effect of the present invention, the packaging structures of Examples 1 to 3 and Comparative Examples 1 to 3 were manufactured and comparative experiments were conducted.
Example 1
As shown in FIGS. 1 and 2, a package having a perforation 22 on the front surface 7 and a mat layer (a resin layer material used as the resin layer 31 in which silica as a matting agent is dispersed) is provided on the outer surface. (Polyethylene) and a plurality of absorbent articles (diapers) provided with an air-through non-woven fabric having a basis weight of 20 g / m ² and PET (polyethylene terephthalate) / PE (polyethylene) resin (average fiber diameter 12 μm) as an exterior surface were prepared. .. Subsequently, a plurality of absorbent articles were housed in the package to produce the packaging structure of Example 1.

Example 2
As shown in FIGS. 1 and 2, a package having perforations 22 on the front surface 7 and a matte layer on the outer surface, and an air-through non-woven fabric having a basis weight of 20 g / m ² and PET / PE resin (average fiber diameter 15 μm) are attached to the exterior surface. We prepared a plurality of absorbent articles (diapers) to be prepared as. Subsequently, a plurality of absorbent articles were housed in the package to produce the packaging structure of Example 2. Here, the mat layer of Example 2 was formed in an amount of 60% of the matting agent contained in Example 1.

Example 3
As shown in FIGS. 1 and 4, a package having a perforation 22 on the front surface 7, a matte layer on the outer surface and the surface on the absorbent article side, and a basis weight of 20 g / m ² , PET / PE resin (average fiber diameter 12 μm). An absorbent article (diaper) having an air-through non-woven fabric made of the above as an exterior surface was prepared. Subsequently, a plurality of absorbent articles were housed in the package to produce the packaging structure of Example 3. Here, each mat layer of Example 3 was formed by using the same amount of the matting agent and the resin layer of the components as in Example 1.

Comparative Example 1
As shown in FIG. 1, a package having a perforation 22 on the front surface 7 but no matte layer on the outer surface and the surface on the absorbent article side, a basis weight of 20 g / m ² , and a PET / PE resin (average fiber diameter). An absorbent article (diaper) having an air-through non-woven fabric made of 12 μm) as an exterior surface was prepared. Subsequently, a plurality of absorbent articles were housed in the package to produce the packaging structure of Comparative Example 1.

Comparative Example 2
As shown in FIG. 1, a package having a perforation 22 on the front surface 7 but no matte layer on the outer surface and the surface on the absorbent article side, a basis weight of 20 g / m ² , and a PET / PE resin (average fiber diameter). An absorbent article (diaper) provided with an air-through non-woven fabric (15 μm) as an exterior surface was prepared. Subsequently, a plurality of absorbent articles were housed in the package to produce the packaging structure of Comparative Example 2.

Comparative Example 3
As shown in FIGS. 1 and 2, an absorbent article (diaper) having a package having perforations 22 on the front surface 7 and a mat layer on the outer surface, and a spunbonded non-woven fabric having a basis weight of 17 g / m ² and made of PP resin as an exterior surface. ) And prepared. Subsequently, a plurality of absorbent articles were housed in the package to produce the packaging structure of Comparative Example 3. Here, the mat layer of Comparative Example 3 was formed by using the same amount of the matting agent and the resin layer as in Example 1.

Subsequently, the following two evaluations were performed using the packaging structures of Examples 1 to 3 and Comparative Examples 1 to 3.
Evaluation 1 (Package texture evaluation)
Five panelists touched the outer surface of the package of the packaging structure before opening, and evaluated the texture of the package on a five-point scale. For example, like 1 <2 <3 <4 <5, 1 has a poor texture, 2 has a slightly poor texture, 3 cannot be said to be either, 4 has a slightly good texture, and 5 has a very good texture. It was. The average value of the five panelists was calculated as evaluation 1.

Evaluation 2 (Evaluation of texture of absorbent articles)
Five panelists opened the perforated opening of the package, touched the absorbent article, and evaluated the texture of the absorbent article on a five-point scale. For example, like 1 <2 <3 <4 <5, 1 has a poor texture, 2 has a slightly poor texture, 3 cannot be said to be either, 4 has a slightly good texture, and 5 has a very good texture. It was. The average value of the five panelists was calculated as evaluation 2.
The results of evaluations 1 and 2 are shown in Table 1 below together with the measurement results of the dynamic friction coefficient.

As shown in Table 1, comparing the packaging structure of Example 1 with the packaging structure of Comparative Example 1, the packaging structure of Example 1 was housed in a package for pseudo-skin assuming human skin. Since the dynamic friction coefficient (c) of the exterior surface of the absorbent article is 0.10 or less smaller than the dynamic friction coefficient (a) of the outer surface of the package with respect to the above-mentioned pseudo-skin, it is evaluated as compared with the packaging structure of Comparative Example 1. It was confirmed that 1 and 2 were high.
In other words, in the packaging structure of Example 1, since the value of ac shown in Table 1 is smaller than 0.10, the texture of the outer surface of the absorbent article contained in the package and the outer surface of the package There is no big discomfort with the texture.

Similarly, when the packaging structure of Example 2 and the packaging structure of Comparative Example 2 are compared, the packaging structure of Example 2 has a value of ac shown in Table 1 smaller than 0.10. There is no great discomfort between the texture of the exterior surface of the absorbent article contained in the package and the texture of the outer surface of the package.

Next, comparing the packaging structure of Example 1 with the packaging structure of Example 2, the packaging structure of Example 1 was housed in a package because the values of ac shown in Table 1 were smaller. There is less discomfort between the texture of the exterior surface of the absorbent article and the texture of the outer surface of the package.

Next, comparing the packaging structure of Example 1 with the packaging structure of Example 3, the packaging structure of Example 3 is the exterior of the absorbent article contained in the package with respect to the pseudo-skin assuming human skin. Since the dynamic friction coefficient (c) of the surface is 0.10 or less smaller than the dynamic friction coefficient (b) of the surface of the absorbent article side of the package with respect to the above-mentioned pseudo-skin, evaluation 1 and evaluation 1 and comparison with the packaging structure of Example 1 It was confirmed that 2 was higher.
In other words, the packaging structure of Example 3 has a small value of bc shown in Table 1, so that the texture of the outer surface of the absorbent article contained in the package is between the texture of the outer surface of the package. The feeling of strangeness is smaller.

[Modification example]
The outer surface of the package of the packaging structure of the modified example and the surface on the side of the absorbent article can have the coefficient of dynamic friction on the surface of the film base material layer or the ink layer within the above-mentioned range by blasting.

1 ... Packaging structure 3 ... Absorbent article 5 ... Package 19 ... Matte layer 25 ... Film substrate layer 27 ... Ink layer

Claims (5)

A packaging structure for absorbent articles, which is formed by containing the absorbent articles in a package.
The coefficient of kinetic friction of the outer surface of the absorbent article contained in the package with respect to the pseudo-skin assuming human skin is 0.10 or less smaller than the coefficient of kinetic friction of the outer surface of the package with respect to the pseudo-skin. .. The packaging structure according to claim 1, wherein the coefficient of dynamic friction of the exterior surface of the absorbent article contained in the package with respect to the pseudo-skin is 0.35 or less. The coefficient of kinetic friction of the exterior surface of the absorbent article contained in the package with respect to the pseudo-skin is 0.10 or less smaller than the coefficient of kinetic friction of the surface of the absorbent article of the package with respect to the pseudo-skin. 2. The packaging structure according to 2. The package has perforations for opening and
The packaging structure according to any one of claims 1 to 3, wherein the dynamic friction coefficient of the region including the perforation with respect to the pseudo-skin is 0.35 or less. The packaging structure according to any one of claims 1 to 4, wherein the package has a matte layer on the surface.

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