JP7493980B2 - Absorbent article container - Google Patents

Description

The present invention relates to a container for absorbent articles.

A container for absorbent articles is known that includes a container member and an absorbent article contained in the container member (see, for example, Patent Document 1).

JP 2019-59552 A

When absorbent articles are stored in a storage member made of a non-transparent material (e.g., paper), there is a problem that when a consumer purchases an absorbent article, the absorbent article cannot be seen from the outside of the storage body where it is displayed, etc.

Therefore, if the absorbent article is configured to be visible from the outside (for example, by providing a transparent window), the absorbent article will be exposed to ultraviolet rays from sunlight that enter through the visible part of the absorbent article when it is displayed, etc. Furthermore, if the absorbent article is equipped with an indicator for detecting excrement, there is a problem in that the indicator, etc. will deteriorate due to ultraviolet rays from sunlight.

The present invention was made in consideration of the above problems, and its purpose is to enable the absorbent article inside to be visually confirmed from the outside, and to suppress the reaction of the indicator with ultraviolet light during display, etc., thereby suppressing deterioration of the indicator.

The main invention to achieve the above object is:
The vertical direction, the horizontal direction, and the front-rear direction intersect with each other,
An absorbent article container including a container member and an absorbent article that is contained in the container member and has an indicator that detects body waste,
The container member is provided with a window area through which the absorbent article can be viewed from the outside and a non-window area through which the absorbent article cannot be viewed from the outside,
When the lower end of the container is in an upright position with the container touching the ground, at least a portion of the indicator overlaps with the non-window region when viewed in the front-rear direction;
The absorbent article has an abdominal portion that contacts a abdominal side of a wearer and a back portion that contacts a back side of the wearer, the abdominal portion and the back portion being opposed to each other,
The absorbent article is stored such that a crotch side of the absorbent article is located below the storage body, and has a crotch region that is the lowest region when the absorbent article in the stored state is divided into four equal parts in the vertical direction,
The indicator is provided at least in the crotch region,
When the lower end of the container is in an upright position with the container on the ground, the entire crotch region overlaps with the non-window region when viewed in the front-rear direction;
A plurality of the absorbent articles are accommodated in the accommodation member,
The plurality of absorbent articles are arranged in the front-rear direction and in the thickness direction of the absorbent article, but are not arranged in the up-down direction and the left-right direction,
The housing member has a front side portion and a rear side portion in the front-rear direction,
The window area is provided only in the front portion,
When the lower end of the housing is in an upright position with the housing in contact with the ground,
a length in the up-down direction of an overlapping portion where the indicator and the non-window region overlap is longer than a length in the up-down direction of an overlapping portion where the indicator and the window region overlap;
In a state in which the lower end of the container is on the ground and the container is upright, the upside-down relationship is reversed.
The container for absorbent articles is characterized in that , when viewed in the front-rear direction, at least a portion of the indicator overlaps with the non-window region .

Other features of the present invention will become apparent from the description of this specification and the accompanying drawings.

According to the present invention, the absorbent article inside can be visually confirmed from the outside, and the reaction between the indicator and ultraviolet light during display, etc. can be suppressed, thereby preventing deterioration of the indicator.

1A and 1B are a schematic front view and a schematic cross-sectional view of a container 1. FIG. 2A and 2B are schematic front and rear views of a storage member 10. FIG. FIG. 2 is a schematic cross-sectional view of a housing member 10. 1 is a schematic front view and a schematic back view of a diaper 20. FIG. 1A and 1B are a schematic plan view and a schematic cross-sectional view of a diaper 20. FIG. FIG. 2 is a diagram showing a state in which the container 1 is turned upside down. FIG. 13 is a diagram for explaining a friction coefficient. FIG. 13 is a graph showing the measurement results of the friction coefficient. FIG. 1 is a diagram for explaining surface roughness SMD. FIG. 13 is a diagram showing the measurement results of surface roughness SMD. FIG. 2 is a diagram showing a state in which the diaper 20 is being removed from the container member 10. 1 is a diagram showing a state in which a hand is inserted into a gap in the container member 10 to remove a diaper 20. FIG. 1 is a table showing the measured Beck smoothness values for sheet members (samples A to C) made of paper material used as the outermost layer. Fig. 14A is a diagram for explaining the arrangement of the pattern 15 provided on the housing member 10. Fig. 14B is a schematic cross-sectional view showing the XX cross section of Fig. 14A. 11 is a diagram for explaining a storage member 110 having gusset fold portions G1 and G2. FIG.

The following points become clear at least from the description in this specification and the accompanying drawings.

An absorbent article container having vertical, horizontal, and front-to-rear directions that intersect with one another, comprising a container member and an absorbent article that is contained in the container member and has an indicator that detects bodily waste, wherein the container member is provided with a window area through which the absorbent article can be seen from the outside and a non-window area through which it cannot be seen, and when the bottom end of the container is in an upright position with the container on the ground, at least a portion of the indicator overlaps with the non-window area when viewed in the front-to-rear direction.

This type of absorbent article container allows the absorbent article inside to be visually confirmed from the outside, and the indicator that overlaps with the non-window area during display, etc., is prevented from reacting with ultraviolet light, thereby preventing deterioration of the indicator.

In such a container for absorbent articles, a product design is printed on the absorbent article, and it is desirable that at least a portion of the product design be visible through the window area from outside the container member when the container is in an upright position with the bottom end of the container on the ground.

This type of absorbent article container allows consumers to check the product design of the absorbent article without opening it when it is on display, etc.

In such a container for absorbent articles, it is desirable that the product design includes at least one of the following: the name of the country in which the absorbent article was manufactured, a logo of the name of the company that manufactures or sells the absorbent article, a logo of the product name of the absorbent article, and a mark of the material used in the absorbent article.

With such a container for absorbent articles, consumers can check at least one of the country of manufacture, the manufacturer's logo, the product name logo, and the materials used without opening the container when the absorbent article is displayed, etc.

In such an absorbent article container, the absorbent article has an abdominal portion that contacts the wearer's abdominal side and a back portion that contacts the wearer's back side, and it is desirable that the abdominal portion or the back portion faces the window area when the lower end of the container is in an upright position with the container on the ground.

This type of absorbent article container allows consumers to check the front or back of the absorbent article (diaper), which has a larger surface area than the sides, without having to open it when it is on display, etc.

In such an absorbent article container, the absorbent article has an abdominal portion that contacts the wearer's abdominal side and a back portion that contacts the wearer's back side, the abdominal portion and the back portion are opposed to each other, the absorbent article is contained such that the crotch side of the absorbent article is located below the container, the absorbent article has a crotch region that is the lowest region when the absorbent article is divided into four equal parts in the vertical direction in the contained state, and it is desirable that at least a portion of the crotch region overlaps with the non-window region when viewed in the front-to-rear direction when the container is in an upright state with the lower end of the container on the ground.

In this type of absorbent article container, the indicator is particularly needed in the crotch area, so by overlapping the crotch area and the non-window area, the reaction between the indicator and ultraviolet light during display, etc. is suppressed, thereby preventing deterioration of the indicator.

In such an absorbent article container, the absorbent article has, as the indicator, a portion located in the abdominal area and a portion located in the back area, one of the abdominal area and the back area faces the window area, and it is desirable that the portion of the indicator located in the other area extends further upward in the vertical direction than the portion of the indicator located in the one area.

With this type of absorbent article container, the reaction between the indicator and ultraviolet light during display, etc. is suppressed (less indicator overlaps with the window area) compared to when the long indicator portion faces the window area, so deterioration of the indicator can be suppressed.

In such an absorbent article container, the absorbent article has, as the indicator, a portion located in the abdominal region and a portion located in the back region, one of the abdominal region and the back region faces the window region, and it is desirable that the portion located in the one region of the indicator extends further upward in the vertical direction than the portion located in the other region of the indicator.

Compared to a case where a short indicator portion faces the window area, this type of absorbent article container suppresses deterioration of the crotch area in the non-window area, and makes it easier for consumers to see the indicator from the outside when the product is on display, etc.

In such an absorbent article container, when the bottom end of the container is on the ground and the container is upright, it is desirable that the length in the vertical direction of the overlapping portion where the part located on one side overlaps with the non-window area is longer than the length in the vertical direction of the overlapping portion where the part located on one side overlaps with the window area.

With this type of absorbent article container, the indicator with the longer length can be seen from the window area, while the overlapping area in the non-window area is longer, so deterioration of the indicator can be suppressed compared to when the indicator is shorter.

In such an absorbent article container, when the bottom end of the container is on the ground and the container is upright, it is desirable that the length of the overlapping portion where the indicator and the non-window area overlap in the vertical direction is longer than the length of the overlapping portion where the indicator and the window area overlap in the vertical direction.

With this type of absorbent article container, the reaction between the indicator and ultraviolet light during display is suppressed compared to when the window area is longer, so deterioration of the indicator can be suppressed.

In such a container for absorbent articles, it is preferable that the container member has a two-layer structure made of paper and a resin sheet.

In this type of absorbent article container, the paper can prevent deterioration of the indicator due to ultraviolet rays, and the resin sheet can prevent deterioration of the absorbent core due to moisture, etc.

In such a container for absorbent articles, it is desirable that the window area is an area of only the resin sheet without the paper layer laminated thereon, the upper end of the window area is located below the upper end of the container member, and the lower end of the window area is located above the lower end of the container member, and the window area is provided continuously from one end to the other end in the left-right direction along the left-right direction.

With this type of absorbent article container, the window area is provided all the way to the widthwise ends, making it easier for consumers to see the absorbent articles inside.

In such an absorbent article container, when the lower end of the container is on the ground and the container is upright, it is desirable that the upper and lower ends of the window area overlap with the absorbent article when viewed in the front-to-rear direction.

In such an absorbent article container, the boundary between the window area and the non-window area has a change in rigidity and is prone to bending, but by overlapping the upper and lower ends with the absorbent article, it becomes less likely to bend.

In such an absorbent article container, when the lower end of the container is in an upright position with the container's bottom end on the ground, it is desirable that the upper end of the window region be located above the center of the absorbent article in the up-down direction when the absorbent article is in the stored state.

In such an absorbent article container, the boundary between the window area and the non-window area changes rigidity and is easily bent, making it easier to make the container compact, for example, when a used absorbent article is folded in half vertically and placed in the container for disposal.

In such an absorbent article container, when the lower end of the container is on the ground and the container is upright, it is desirable that the upper end of the window area does not overlap with the absorbent article when viewed in the front-to-rear direction.

This type of absorbent article container allows consumers to check even one end of the absorbent article without opening it when it is on display, etc.

In such an absorbent article container, when the bottom end of the container is on the ground and the container is in an upright position, it is desirable that at least a portion of the indicator overlaps with the non-window area when viewed in the front-to-back direction.

With this type of absorbent article container, when the container is turned upside down (as the container is made of paper, there are gaps inside, i.e. when the absorbent article is inside and moves to the upper side of the container), the reaction between the indicator and ultraviolet light is suppressed, so deterioration of the indicator can be suppressed.

In such a container for absorbent articles, it is desirable that the paper be unbleached.

In this type of absorbent article container, unbleached paper contains more lignin than bleached paper, so the reaction between the indicator and ultraviolet light is suppressed compared to when bleached paper is used, and deterioration of the indicator can be suppressed.

In the container for such absorbent articles, the container member has a front portion, a rear portion, and a bottom portion, and a gusset is provided between the lower end of the front portion and the lower end of the rear portion to form the bottom portion, and the upper end of the container member does not have the gusset, and it is preferable that the bottom portion is joined to at least one of the front portion and the rear portion at the lower end of the container member.

In this type of absorbent article container, the number of bonding layers between the components at the lower end of the container member is greater than the number of bonding layers between the components at the upper end of the container member, so the lower end of the container member is reinforced, preventing exposure of the indicator due to damage to the lower end and preventing deterioration of the indicator.

In such an absorbent article container, the absorbent article has an abdominal portion that contacts the wearer's abdominal side and a back portion that contacts the wearer's back side, and it is desirable that the abdominal portion and the back portion face each other, and that the absorbent article is placed in the container member so that the crotch side of the absorbent article is located below the container.

With this type of absorbent article container, the crotch side of the diaper 20 is thick, so the portion of the container member 10 where the crotch side is located is prone to tearing; however, compared to when the crotch side is located on the upper side of the container member 10, the number of bonding layers at the lower end of the container member 10 is greater than the number of bonding layers at the upper end (because the lower end is more firmly bonded), so exposure of the indicator 23 due to damage to the container member 10 is suppressed, and deterioration of the indicator 23 can be suppressed.

====Embodiment====
In this embodiment, a diaper 20 container 1 (hereinafter also simply referred to as container 1) that contains a diaper 20 for newborns (hereinafter also simply referred to as diaper 20) will be described as an example of a container for an absorbent article. Note that the absorbent article of this embodiment also includes, for example, adult diapers, sanitary napkins, etc., and is not limited to the diaper 20.

<Regarding the container 1 and the container member 10>
Fig. 1 is a schematic front view and a schematic A-A cross-sectional view of the housing 1. Fig. 2 is a schematic front view and a schematic back view of the housing member 10, with Fig. 2A being the schematic front view and Fig. 2B being the schematic back view. Fig. 3 is a schematic cross-sectional view of the housing member 10, with Fig. 3A being the schematic B-B cross-sectional view of Fig. 2A and Fig. 3B being the schematic C-C cross-sectional view of Fig. 2A. The dashed lines in Fig. 3 indicate the joints where the respective members are joined.

In the figure, the container 1 has a top-bottom direction, a front-back direction, and a left-right direction that intersect with one another. In the top-bottom direction, the upper side of the container 1 where characters, etc., such as the design 15 on the container member 10 can be correctly recognized and the characters, etc. look natural is referred to as "top," and the opposite side is referred to as "bottom." Also, Figure 1 shows the container 1 in an upright position with its bottom end on the ground.

The container 1 includes a container member 10 and a diaper 20 that is contained in the container member 10 and has an indicator 23 that detects excrement.

The outermost surface of the storage member 10 is made of paper 10a, and because the paper 10a has little elasticity, there is a gap space (the area with diagonal lines slanting upwards to the right in the schematic cross-sectional view of FIG. 1) inside (the internal space) of the storage member 10. In other words, at least a part of the outermost surface of the storage member 10 is made of paper 10a, and the storage member 10 has an internal space inside, and the internal space has a space where the diaper 20 is present and a gap space where the diaper 20 is not present.

The internal space of the storage member 10 is formed by making the storage member 10 three-sided. In other words, the storage member 10 has a front portion 11, a rear portion 12, and a bottom portion 13, and a gusset is provided between the lower end of the front portion 11 and the lower end of the rear portion 12 to form the bottom portion 13, and no gusset is provided at the upper end of the storage member 10.

Furthermore, the front portion 11 and the rear portion 12 of the storage member 10 are joined (welded) in the up-down direction at both left-right ends, and at the lower end, the front portion 11, the rear portion 12, and the bottom portion 13 are joined (welded) in the left-right direction. That is, at the lower end of the storage member 10, the bottom portion 13 is joined to at least one of the front portion 11 and the rear portion 12.

The upper end of the storage member 10 is provided with an opening/closing seal section 14 (corresponding to an opening section) that is opened when removing the diaper 20. The opening/closing seal section 14 can be resealed after opening, and can be opened and closed multiple times. The opening/closing seal section 14 may be provided at the upper end of the storage member 10, but the opening/closing seal section 14 according to this embodiment is located below the upper end of the storage member 10.

In addition, in the state shown in FIG. 1, a gap (clearance space) is generated between the opening and closing seal part 14 and the diaper 20. In other words, when the lower end of the container 1 is in a state where the container 1 is in an upright position with the bottom end of the container 1 in contact with the ground, a gap is generated between the diaper 20 and the opening and closing seal part 14.

As shown in FIG. 1, four diapers 20 are stored in the internal space of the storage member 10, and the diapers 20 are lined up in a row in the thickness direction of the diapers 20. In other words, the storage body 1 stores a plurality of diapers 20, and while the diapers 20 are lined up in the front-to-back direction, they are not lined up in the up-down direction or the left-to-right direction.

As shown in FIG. 3, the storage member 10 has a two-layer structure of paper 10a and resin sheet 10b (having a two-layer structure portion composed of paper 10a and resin sheet 10b), and a layer of resin sheet 10b is provided inside the layer of paper 10a. In other words, the innermost surface of the storage member 10 is composed of resin sheet 10b. As described above, the dashed lines in FIG. 3 indicate the joints, and the joints between the paper 10a and the resin sheet 10b can be formed, for example, by lamination, and the joints between the members of the front portion 11, the rear portion 12, and the bottom portion 13 (resin sheet 10b and resin sheet 10b) can be formed (welded) by, for example, heat fusion.

The paper 10a constituting the storage member 10 can be that defined in "JIS P 0001:1998 Paper, Paperboard and Pulp Terminology, No. 4004, Terminology Paper." The paper 10a used in this embodiment is unbleached (brown paper that has not been treated with bleach or other methods).

The storage member 10 is a composite material that uses materials other than the paper 10a, but it is desirable that the mass of the paper 10a that constitutes the outermost layer of the storage member 10 exceed 50%. By doing so, even if the storage member 10 is made of a composite material, when the mass of the paper 10a exceeds 50%, the paper 10a becomes the main material, and it can be treated as a mark (not shown, the so-called "paper" mark) that is the standard for disposal as paper waste.

The resin of the resin sheet 10b constituting the storage member 10 can be natural or synthetic resin. Natural resins derived from plants, animals, or minerals can be used, such as rosin and lacquer. Synthetic resins can be high molecular weight resinous substances obtained by polycondensation or the like from low molecular weight compounds made from fossil resources, and thermoplastic resins and thermosetting resins can be used. Thermoplastic resins can be polyethylene, polypropylene, polyvinyl chloride, polystyrene, polycarbonate, polysulfone, polyamide, polyphenylene oxide, etc., and thermosetting resins can be urea resin, melamine resin, phenolic resin, epoxy resin, etc.

The resin also contains biomass plastic. "Biomass plastic" is plastic synthesized using renewable biomass resources as raw materials. In general, biomass plastic is so-called carbon neutral, which means that it does not increase the _CO2 concentration in the atmosphere even when incinerated when discarded, and is an environmentally friendly material. Therefore, by including biomass plastic in the resin constituting the innermost layer, it is possible to reduce the proportion of petroleum-derived substances in the innermost layer. Therefore, in this embodiment, it is desirable to increase the weight ratio of biomass plastic contained in the resin constituting the innermost layer as much as possible. Specifically, it is desirable for the weight ratio of biomass plastic to be 10% or more, and more desirable for the weight ratio to be 25% or more.

The resin sheet 10b constituting the storage member 10 also includes films that are thinner than a sheet. In other words, generally, a film is defined as a material having a thickness of 200 μm or less, and the resin sheet 10b according to this embodiment includes such films. It is preferable that the resin sheet 10b has moisture permeability.

As shown in FIG. 2A, a pattern 15 is printed on the front portion 11 (front side) of the storage member 10. The pattern 15 is provided to allow the consumer to visually recognize information about the storage body 1 (diaper 20), and is printed on the upper and lower parts of the storage member 10. In other words, at least a part of the pattern 15 is located on the upper part of the storage member 10. It is preferable that the pattern 15 of the storage member 10 is printed more on the upper part (upper half) than on the lower part (lower half).

In this embodiment, the patterns 15 are a first pattern 15a showing the name of the diaper 20 (product name: Natural Moomy), a second pattern 15b showing the characteristic features of the diaper 20 (material used: organic cotton), a third pattern 15c showing the type of wearer (newborns, birth to 5000g) suitable for wearing the diaper 20, and a fourth pattern 15d depicting a floral pattern.

The pattern 15 is printed on the surface side of the outermost layer by gravure printing or flexographic printing using a specific water-based ink. Generally, water-based inks often use water as a solvent, and are safer and less smelly than oil-based inks that use organic solvents, making them environmentally friendly inks. On the other hand, water-based inks have weaker adhesion to the print medium than oil-based inks, so they are sometimes difficult to use for products distributed in the market. In contrast, in this embodiment, the outermost layer, which is the print medium, is paper 10a, so the water-based ink is more likely to adhere, and the pattern 15 can be stably formed. Therefore, from the perspective of environmental consideration, it is preferable to use water-based ink as the ink for printing the pattern 15 on the storage member 10 of this embodiment.

As shown in Figures 1 to 3, the storage member 10 has a window region 16 through which the diaper 20 can be seen from the outside, and a non-window region 17 through which it cannot be seen. The window region 16 is an area where there is only the resin sheet 10b with no layer of paper 10a laminated therein, and the non-window region 17 is an area where the paper 10a and the resin sheet 10b are laminated together. In other words, the storage member 10 has a non-window region 17 where the paper 10a and the resin sheet 10b overlap, and a window region 16 where there is only the resin sheet 10b.

The window area 16 is provided continuously and almost horizontally from the left end to the right end in the left-right direction, and is provided below the upper end of the storage member 10 and above the lower end. In other words, the upper end of the window area 16 is located below the upper end of the storage member 10, and the lower end of the window area 16 is located above the lower end of the storage member 10, and the window area 16 is provided continuously from one end to the other end in the left-right direction.

<About Diaper 20>
Fig. 4 is a schematic front view and a schematic back view of the diaper 20, Fig. 4A being a schematic front view and Fig. 4B being a schematic back view. Fig. 5 is a schematic plan view and a schematic cross-sectional view of the diaper 20. In the state of Fig. 4, the diaper 20 has a vertical direction and a horizontal direction which are perpendicular to each other. Hereinafter, the upper and lower sides in the vertical direction are also referred to as the "waist side" and the "crotch side", respectively.

In addition, in the unfolded state of FIG. 5, the diaper 20 has three mutually perpendicular directions: a longitudinal direction, a width direction, and a thickness direction. In the following, one side of the longitudinal direction in this unfolded state is referred to as the "ventral side" and the other side as the "dorsal side." Note that the width direction in the unfolded state is the direction along the left-right direction of the container 1, and the longitudinal direction is the direction along the up-down direction. In addition, as shown in FIG. 5, in the thickness direction, the side that comes into contact with the wearer's skin is referred to as the "skin side," and the opposite side is referred to as the "non-skin side."

The diaper 20 has an outer body 21, an absorbent body 22 that is rectangular in plan view and is located on the skin side of the outer body 21, an indicator 23, and a tape 24.

As shown in FIG. 5, the diaper 20 has an abdominal portion 26 and a back portion 27. The abdominal portion 26 is a portion that is located on the ventral side of the wearer when the diaper 20 is worn, and is located on the ventral side of the longitudinal center position CL in FIG. 5. The back portion 27 is a portion that is located on the dorsal side of the wearer when the diaper 20 is worn, and is located on the dorsal side of the longitudinal center position CL in FIG. 5.

In the stored state of the diaper 20, the diaper 20 is folded so that the abdomen 26 and the back 27 of the diaper 20 face each other, and the diaper 20 is placed with the crotch side facing the bottom of the container 1. In other words, the diaper 20 has the abdomen 26 that abuts against the wearer's abdomen and the back 27 that abuts against the wearer's back, and the diaper 20 is placed in the container 10 so that the abdomen 26 and the back 27 face each other and the crotch side of the diaper 20 is located below the container 1. In this embodiment, the diaper 20 is stored so that the back 27 of the diaper 20 faces the window region 16.

In the diaper 20 of this embodiment, the abdomen 26 and the back 27 are integrally configured as shown in FIG. 5, but the abdomen 26 and the back 27 may be separate members. For example, a crotch portion (not shown) located in the crotch area of the wearer may be provided near the center position CL between the abdomen and the back in the longitudinal direction, and the diaper 20 may be configured by the abdomen, the back, and the crotch portion.

The diaper 20 can be put on by, for example, placing the back portion 27 against the wearer's back (buttocks, etc.) and placing the abdomen portion 26 between the legs (through the crotch) against the wearer's abdomen (lower abdomen, etc.), and then joining the adhesive surface of the tape 24 on the back portion 27 to the outer body 21 of the abdomen portion 26.

The exterior body 21 is a part that constitutes the exterior of the diaper 20, and is formed by stacking multiple flexible sheet-like members in the thickness direction. In this embodiment, nonwoven fabric is used as the flexible sheet-like members, and for example, spunbond nonwoven fabric can be used.

The absorbent body 22 has a function of absorbing urine and other excrement, and is generally rectangular in plan view. As shown in FIG. 5, the absorbent body 22 is positioned in the center in the left-right direction with its longitudinal direction aligned with the top-bottom direction of the diaper 20.

The absorbent body 22 has a liquid-absorbent core 22a, a core wrap sheet (not shown) that covers the outer surface of the core 22a, a top sheet 22b, and a back sheet 22c.

The absorbent core 22a is made by molding liquid-absorbent fibers such as pulp fibers into a predetermined shape, and absorbent polymers (so-called SAP) are mixed into it. As shown in the cross-sectional schematic diagram of Figure 5, the absorbent core 22a is the thickest part of the diaper 20.

The core wrap sheet is a liquid-permeable sheet member that covers the outer surface of the absorbent core 22a, and tissue paper, nonwoven fabric, etc. may be used. Note that the core wrap sheet does not necessarily have to be provided.

The top sheet 22b is a liquid-permeable sheet member that is disposed on the skin side of the absorbent core 22a in the thickness direction and that comes into contact with the wearer's skin when the diaper 20 is worn. In this embodiment, the top sheet 22b is formed, for example, from an air-through nonwoven fabric or a spunbond nonwoven fabric.

The back sheet 22c is a liquid-impermeable and moisture-permeable sheet member that is placed on the non-skin side in the thickness direction of the absorbent core 22a, and is formed, for example, from a resin sheet. The provision of the back sheet 22c prevents moisture such as urine absorbed by the absorbent body 22 from migrating (seeping through) to the wearer's clothing.

As shown in FIG. 4, indicators 23 that can be seen from the non-skin side are provided on the front and back of the diaper 20.

The indicator 23 is for visually checking the presence or absence of excrement when the diaper 20 is being worn, and examples include a urine indicator that detects urination and a stool indicator that detects defecation.

The indicator 23 generally reacts with a pH indicator or moisture to produce a color (change in color), allowing the user to detect the excretion of urine or feces. In other words, the indicator 23 contains a pigment, and the pigment changes color to allow the user to detect the excretion of urine or feces.

When pigments are exposed to the ultraviolet light contained in sunlight, the internal bonds of the compounds are generally destroyed and the pigment fades. In other words, if indicator 23 is exposed to sunlight (ultraviolet light) for a long period of time, the color reaction of indicator 23 fades and becomes discolored, and the change in color becomes smaller, making it difficult for the user to detect the excretion of urine or feces.

As shown in FIG. 4, the indicators 23 are located on both the abdominal portion 26 and the back portion 27 of the diaper 20. The indicators 23 may have the same vertical length on the abdominal portion 26 and the back portion 27, but in this embodiment, the abdominal indicator 23a (FIG. 4A) located on the abdominal portion 26 side is longer in the vertical direction than the back indicator 23b (FIG. 4B) located on the back portion 27 side.

As shown in FIG. 4, a product design 25 is printed on the front and back of the diaper 20 so that it can be seen from the non-skin side. The product design 25 is provided to allow the consumer to see information about the diaper 20.

In this embodiment, the product designs 25 include a first product design 25a showing the name of the diaper 20 (product name: Natural mommy), a second product design 25b showing a floral pattern on the front, a third product design 25c showing the characteristic features of the diaper 20 (material used: with organic sheet), and a fourth product design 25d showing a floral pattern on the back.

As shown in FIG. 1, a portion of the product design 25 can be seen from outside the storage member 10 through the window area 16. In other words, when the lower end of the storage body 1 is in an upright position with the bottom end of the storage body 1 on the ground, at least a portion of the product design 25 can be seen from outside the storage member 10. In this embodiment, the third product design 25c and the fourth product design 25d can be seen from outside.

The product design 25 also includes markings such as the country of manufacture of the diaper 20, the company name or product name logo, and materials used, and some of the markings can be seen from the outside. In other words, the product design 25 includes at least one of the markings: the name of the country in which the diaper 20 was manufactured, the logo of the company name that manufactures or sells the diaper 20, the logo of the product name of the diaper 20, and the materials used, and at least some of the markings can be seen from the outside of the container 10 when the bottom end of the container 1 is in the ground and the container 1 is upright. In this embodiment, the material used as the marking (third product design 25c) can be seen from the outside.

The diaper 20 also has a crotch region 28 (the region with diagonal lines slanting downward to the right in FIG. 4) that occupies the lower 1/4 of the diaper in the vertical direction when stored. In other words, the diaper 20 is stored so that the crotch side of the diaper 20 is located below the storage body 1, and has a crotch region 28 that is the lowermost region when the diaper 20 is divided into four equal parts in the vertical direction when stored. The skin side of the crotch region 28 is the portion that comes into contact with at least the crotch of the wearer when worn.

<Regarding the arrangement of the window region 16 and the non-window region 17>
Next, the positions of the window region 16 and the non-window region 17 and the positional relationship (disposition) of other members will be described. Specifically, the positional relationships in the up-down direction between the top and bottom ends of the window region 16 and the diaper 20 (the center position QL of the diaper 20), between the non-window region 17 and the indicator 23, and between the non-window region 17 and the crotch region 28 will be described, with regard to overlap and non-overlap when viewed in the front-to-rear direction.

As shown in FIG. 1, the positional relationship between the upper and lower ends of the window region 16 and the diaper 20 in the vertical direction is such that the upper end of the window region 16 is located below the upper end of the diaper 20, and the lower end of the window region 16 is located above the lower end of the diaper 20. In other words, when the lower end of the container 1 is in an upright position with the container 1 in contact with the ground, the upper and lower ends of the window region 16 overlap with the diaper 20 when viewed in the front-to-rear direction.

The center position QL shown in FIG. 4 indicates the vertical center position of the diaper 20 in the stored state. As shown in FIG. 1 and FIG. 4, the vertical positional relationship between the center position QL and the upper end of the window area 16 is such that the center position QL overlaps with the fourth product design 25d, and the fourth product design 25d is located below the upper end of the window area 16. In other words, when the lower end of the container 1 is in an upright position with the container 1 in contact with the ground, the upper end of the window area 16 is located above the center position QL in the vertical direction of the diaper 20 in the stored state.

As shown in FIG. 1, the vertical positional relationship between the non-window area 17 and the indicator 23 is such that a portion of the indicator 23 is located below the upper end of the lower non-window area 17 (the portion of the indicator 23 shown by the dashed line in FIG. 1). In other words, when the lower end of the container 1 is in a state where the container 1 is in an upright position with the bottom end of the container 1 in contact with the ground, at least a portion of the indicator 23 overlaps with the non-window area 17 when viewed in the front-to-rear direction.

In addition, the vertical length of the overlap between the non-window region 17 and the indicator 23 (the vertical length of the indicator 23 shown in dashed line in FIG. 1) is longer than the vertical length of the overlap between the window region 16 and the indicator 23 (the vertical length of the indicator 23 shown in solid line in FIG. 1). In other words, when the lower end of the container 1 is in an upright position with the container 1 on the ground, the vertical length of the overlap between the indicator 23 and the non-window region 17 is longer than the vertical length of the overlap between the indicator 23 and the window region 16.

Figure 6 shows the container 1 turned upside down, and corresponds to the schematic plan view of Figure 1. The container member 10 according to this embodiment has a clearance space within the internal space, and the diaper 20 can move within the internal space. That is, in the state shown in Figure 6, the diaper 20 moves away from the bottom surface portion 13 and closer to the open/close seal portion 14 (moves to the upper side of the container 1), and therefore the area of the diaper 20 visible from the window area 16 is different.

As shown in FIG. 6, the vertical positional relationship between the non-window area 17 and the indicator 23 in the upside-down state is such that a portion of the indicator 23 is located below the upper end of the non-window area 17 on the lower side (the side facing the ground in FIG. 6) and above the lower end of the non-window area 17 on the upper side (the side facing the ground in FIG. 6) (the area shaded diagonally upwards to the right in FIG. 6). In other words, in a state in which the upper-lower relationship is reversed from the state in which the lower end of the container 1 is grounded and the container 1 stands upright, at least a portion of the indicator 23 overlaps the non-window area 17 when viewed in the front-to-back direction.

As shown in Figs. 1 and 4, the positional relationship between the non-window area 17 and the crotch area 28 in the vertical direction is such that the bottom end of the window area 16 is located near the bottom end of the fourth product design 25d, while the top end of the crotch area 28 is located below the bottom end of the fourth product design 25d. In other words, when the bottom end of the container 1 is on the ground and the container 1 is upright, at least a portion of the crotch area 28 overlaps with the non-window area 17 when viewed in the front-to-back direction.

<About the placement of pattern 15>
Next, the position of the pattern 15 and the positional relationship (arrangement) of other members will be described. Specifically, the overlapping and non-overlapping relationships of the absorbent core 22a, the diaper 20, and the gap spaces with the pattern 15 when viewed in the thickness direction of the diaper 20 (the direction along the front-rear direction; in the schematic plan view on the left of Fig. 1, the direction penetrating the page) will be described. The positional relationship of the open-close seal portion 14 and the pattern 15 will also be described.

As mentioned above, the diaper 20 according to this embodiment can be moved within the internal space of the container 10, so depending on the position of the diaper 20 in the internal space, the positional relationship between the diaper 20 (absorbent core 22a) and the pattern 15 described below may not be established. Therefore, below, a state in which the diaper 20 is located at a certain position among any positions that it can take in the internal space (any position in the internal space) and the described positional relationship is established will be described. Note that there may be cases (always exist) where the positional relationship between the diaper 20 and the pattern 15 described below does not exist, in which case the position of the diaper 20 in the internal space may be any position.

In the following description, the position shown in FIG. 1 will be used as an example of one of the positions that the diaper 20 can take in the internal space. In the position of the diaper 20 shown in FIG. 1 in the internal space, the diaper 20 is in contact with the bottom surface 13 of the container member 10 in the up-down direction and is in the center in the left-right direction.

As shown in FIG. 1, for example, the relationship of overlap/non-overlap between the pattern 15 and the absorbent core 22a is such that part of the fourth pattern 15d overlaps with the absorbent core 22a, and the first pattern 15a to the third pattern 15c do not overlap with the absorbent core 22a. In other words, when the diaper 20 is positioned at a certain position within the container member 10 and viewed in the thickness direction of the diaper 20, at least part of the pattern 15 does not overlap with the absorbent core 22a.

As for the overlapping/non-overlapping relationship between the pattern 15 and the diaper 20, for example, as shown in FIG. 1, the fourth pattern 15d and a portion of the third pattern 15c overlap with the diaper 20, and the first pattern 15a and the second pattern 15b do not overlap with the diaper 20. In other words, when the diaper 20 is positioned at a certain position within the container member 10, at least a portion of the pattern 15 does not overlap with the diaper 20 when viewed in the thickness direction of the diaper 20.

1, for example, the fourth design 15d and a portion of the third design 15c overlap with the diaper 20, while most of the first design 15a, the second design 15b, and the third design 15c do not overlap with the diaper 20. In other words, when the diaper 20 is positioned at a certain position within the container 10 and viewed in the thickness direction of the diaper 20, the area where the design 15 and the diaper 20 do not overlap is larger than the area where the design 15 and the diaper 20 overlap.

As for the overlapping/non-overlapping relationship between the pattern 15 and the gap space, for example, as shown in FIG. 1, the first pattern 15a and the second pattern 15b overlap with the gap space. In other words, when the diaper 20 is positioned at a certain position within the container member 10, at least a portion of the pattern 15 overlaps with the gap space when viewed in the thickness direction of the diaper 20.

The positional relationship between the design 15 and the opening/closing seal portion 14 is such that the design 15 is not present on the opening/closing seal portion 14. In other words, the design 15 is not printed on the opening/closing seal portion 14.

The opening and closing seal portion 14 is located below the upper end of the storage member 10, and there is no pattern 15 above the opening and closing seal portion 14. In other words, the pattern 15 is not printed on the upper side of the opening and closing seal portion 14.

<<<Evaluation of Housing 1>>>
The container 1 was evaluated for its coefficient of friction, surface roughness, and ink density.

<Friction coefficient evaluation>
The friction coefficient was evaluated by measuring the dynamic friction coefficient MIU of the paper 10a constituting the outermost surface of the storage member 10, the resin sheet 10b constituting the innermost surface of the storage member 10, the exterior body 21 constituting the outermost surface and opposing surface of the diaper 20 (the surface facing the innermost surface of the storage member 10 when the diaper 20 is stored is the opposing surface. In other words, at least a part of the outermost surface of the diaper 20 becomes the opposing surface facing the storage member 10), and the top sheet 22b constituting the skin-facing surface of the diaper 20. In addition, the static friction coefficient μs was also measured for the paper 10a constituting the outermost surface of the storage member 10 and the resin sheet 10b constituting the innermost surface of the storage member 10. The static friction coefficient μs was measured based on JIS K7125, using Kanakin as the opposing material.

Fig. 7 is a diagram for explaining the friction coefficient μ. The curve shown in Fig. 7 is the friction coefficient μ, and represents the results of measurement over a measurement length L1. Here, assuming that the load on the friction element (the part in contact with the sample) is W, and the friction force with the sample is F, the friction coefficient μ can be expressed by the following formula.
Friction coefficient μ = friction force F / load W
The dynamic friction coefficient MIU was determined as the average value of the friction coefficient μ over the measurement length L1 (average surface friction coefficient).

As a specific evaluation method, five samples were prepared, and their average value was taken as the dynamic friction coefficient MIU. The measurement device used was an automated surface tester (KESFB4-AUTO-A manufactured by Kato Tech Co., Ltd.) with a friction force detection function. The measurement conditions were that the contact area of the frictional element was 5 mm x 5 mm (0.25 cm ² ), and the load W was 50 gf (about 0.5 N) in the vertical direction including the weight of the frictional element. Then, a tension of 400 g was applied to a sample width of 20 cm, and the sample was set in the automated surface tester, and the frictional element was brought into contact with the sample under the load W, and the frictional element was moved at a speed of 1 mm/sec to measure the frictional force F, and the dynamic friction coefficient MIU and the static friction coefficient μs were calculated using the above formulas and the like.

Figure 8 shows the results of measuring the coefficient of friction. As can be seen, the resin sheet 10b has a smaller dynamic friction coefficient MIU than the paper 10a. In other words, the minimum value of the dynamic friction coefficient MIU on the innermost surface of the storage member 10 (the value of the resin sheet 10b) is smaller than the dynamic friction coefficient MIU of the outermost surface of the storage member 10 made of paper 10a.

Note that "the minimum value of the dynamic friction coefficient MIU on the innermost surface of the storage member 10" refers to the minimum value of the dynamic friction coefficient MIU of each region when the innermost surface is made up of multiple regions with different materials, surface properties, etc. For example, when the innermost surface of the storage member is made up of paper 10a and resin sheet 10b, the value of resin sheet 10b, which has the smallest value of dynamic friction coefficient MIU, is used.

The resin sheet 10b also has a smaller dynamic friction coefficient MIU than the exterior body 21. In other words, the minimum value of the dynamic friction coefficient MIU on the innermost surface of the housing member 10 (resin sheet 10b) is smaller than the minimum value of the dynamic friction coefficient MIU on the opposing surface (exterior body 21).

The "minimum value of the kinetic friction coefficient MIU on the opposing surface" refers to the minimum value of the kinetic friction coefficient MIU of each area when the opposing surface is made up of multiple areas with different materials and surface properties. For example, if a resin-based tape is provided on the opposing surface of a diaper to hold the diaper in place when it is discarded, the value of the tape with the smallest kinetic friction coefficient MIU is used.

The paper 10a also has a smaller dynamic friction coefficient MIU than the outer body 21. In other words, the dynamic friction coefficient MIU of the outermost surface of the paper 10a is smaller than the maximum value of the dynamic friction coefficient MIU of the outermost surface of the diaper 20 (outer body 21).

Note that "the maximum value of the dynamic friction coefficient MIU on the outermost surface of the absorbent article (diaper 20)" refers to the maximum value of the dynamic friction coefficient MIU of each region when the outermost surface is made up of multiple regions with different materials and surface properties. For example, if a resin-based tape is provided on the outermost surface of the diaper to hold the diaper in place when it is discarded, the value of the exterior body 21 with the largest dynamic friction coefficient MIU value is used.

The top sheet 22b also has a smaller dynamic friction coefficient MIU than the outer body 21, i.e., the minimum value of the dynamic friction coefficient MIU on the surface of the diaper 20 closest to the skin (top sheet 22b) is smaller than the minimum value of the dynamic friction coefficient MIU on the opposing surface (outer body 21).

The "minimum value of the dynamic friction coefficient MIU on the surface closest to the skin of the absorbent article (diaper 20)" refers to the minimum value of the dynamic friction coefficient MIU of each region when the surface closest to the skin is made up of multiple regions with different materials and surface properties. For example, when a member different from the top sheet 22b constitutes the surface closest to the skin together with the top sheet 22b, the value of the member with the smallest dynamic friction coefficient MIU is used.

The resin sheet 10b also has a smaller static friction coefficient μs than the paper 10a. In other words, the minimum value of the static friction coefficient μs on the innermost surface of the storage member 10 (resin sheet 10b) is smaller than the static friction coefficient μs of the outermost surface of the storage member 10 made of paper 10a.

Note that "the minimum value of the static friction coefficient μs on the innermost surface of the storage member 10" refers to the minimum value of the static friction coefficient μs of each region when the innermost surface is made up of multiple regions with different materials, surface properties, etc. For example, when the innermost surface of the storage member is made up of paper 10a and resin sheet 10b, the value of resin sheet 10b with the smallest static friction coefficient μs is used.

<Surface roughness evaluation>
The surface roughness was evaluated by measuring the mean deviation SMD of the surface roughness (hereinafter simply referred to as surface roughness SMD) of the paper 10a constituting the outermost surface of the storage member 10, the resin sheet 10b constituting the innermost surface of the storage member 10, and the outer casing 21 constituting the opposing surface of the diaper 20.

Fig. 9 is a diagram for explaining the surface roughness SMD. The curve shown in Fig. 9 is the surface roughness, and represents the result of measurement over a measurement length L2. Here, the surface roughness SMD can be expressed by the following equation using the diagonally upper right shaded area shown in Fig. 9 (the value obtained by integrating the difference from the average surface roughness) and the measurement length L2.
Surface roughness SMD = upper right diagonal line area / measurement length L2

As a specific evaluation method, five samples were prepared, and their average value was taken as the surface roughness SMD. The measuring device used was an automated surface tester (KESFB4-AUTO-A manufactured by Kato Tech Co., Ltd.) with a vertical thickness variation detection function. The measurement conditions were a 0.5 mm wire used as the friction element, a contact surface width of 5 mm, and a load W of 10 gf (approximately 0.1 N) in the vertical direction. Then, a tension of 400 g was applied to a sample width of 20 cm, and the sample was set in the automated surface tester, and the friction element was brought into contact with the sample with the load W, and the friction element was moved at a speed of 1 mm/sec to measure the vertical thickness variation, and the surface roughness SMD was calculated using the above formula, etc.

Figure 10 shows the measurement results of surface roughness SMD. As can be seen, the resin sheet 10b has a smaller surface roughness SMD than the paper 10a. In other words, the minimum value of the surface roughness SMD on the innermost surface of the storage member 10 (the value of the resin sheet 10b) is smaller than the surface roughness SMD of the outermost surface of the storage member 10 made of paper 10a.

Note that "the minimum value of the surface roughness SMD on the innermost surface of the storage member 10" refers to the minimum value of the surface roughness SMD of each region when the innermost surface is made up of multiple regions with different materials, surface properties, etc. For example, when the innermost surface of the storage member is made up of paper 10a and resin sheet 10b, the value of resin sheet 10b, which has the smallest surface roughness SMD value, is used.

The resin sheet 10b also has a smaller surface roughness SMD than the exterior body 21. In other words, the minimum value of the surface roughness SMD on the innermost surface of the housing member 10 (resin sheet 10b) is smaller than the minimum value of the surface roughness SMD on the opposing surface (exterior body 21).

The "minimum value of surface roughness SMD on the opposing surface" refers to the minimum value of the surface roughness SMD of each area when the opposing surface is made up of multiple areas with different materials and surface properties. For example, if a resin-based tape is provided on the opposing surface of a diaper to hold the diaper in place when it is discarded, the value of the tape with the smallest surface roughness SMD value is used.

<Ink Density Evaluation>
The ink density was evaluated by comparing the ink density of the design 15 of the storage member 10 (hereinafter also referred to as the storage section design 15) and the product design 25 of the diaper 20. Note that the ink density here means the darkness of the printed matter when the storage section design 15 or the product design 25 is viewed, and for example, if the product design 25 is printed on the outside of the exterior body 21 of the diaper 20 and the product design 25 is printed on the inside of the exterior body 21 in the same manner as the outside (with the same darkness), the product design 25 is viewed through the exterior body 21 on the inside, so the ink density will be lighter.

Therefore, the comparison of the ink density of the container design 15 and the product design 25 can be done by visual inspection as long as it can be judged by the apparent darkness of the exterior. To make a more precise comparison, for example, as samples, the container design 15 and the product design 25 can each be photographed with a digital camera under the same conditions, and these can be converted to monochrome grayscale with 256 gradations using image processing software on a PC, and the darkest value of each can be compared as the maximum ink density.

In this embodiment, the printout can be confirmed such that the container section design 15 is clearly darker than the product design 25. In other words, the maximum ink density of the container section design 15 is darker than the maximum ink density of the product design 25.

<<<<Regarding the effectiveness of the container 1>>>
The container 1 for diapers 20 according to this embodiment has vertical, horizontal, and front-to-rear directions that intersect with one another, and includes a container member 10 and a diaper 20 contained in the container member 10 and having an indicator 23 for detecting excrement, the container member 10 being provided with a window region 16 through which the diaper 20 can be seen from the outside and a non-window region 17 which cannot be seen, and when the lower end of the container 1 is in an upright position with the container 1 on the ground, at least a part of the indicator 23 overlaps with the non-window region 17 when viewed in the front-to-rear direction. This makes it possible to see the diaper 20 inside from the outside, and also suppresses the reaction of the indicator 23 with ultraviolet light during display, etc., thereby suppressing deterioration of the indicator 23.

When diapers are stored in a storage member made of a non-transparent material such as paper, there is a problem in that the diapers cannot be seen from the outside when a consumer purchases the diapers.

Therefore, if the diapers are configured to be visible from the outside, for example by providing a transparent window, the diapers will be exposed to ultraviolet rays from sunlight entering through the visible part of the diapers when displayed, etc. Furthermore, if the diapers are equipped with an indicator for detecting excrement, there is a problem in that the indicator, etc. will be deteriorated by the ultraviolet rays from sunlight.

In contrast, in this embodiment, a window area 16 and a non-window area 17 are provided, and when the lower end of the container 1 is in contact with the ground and the container 1 is upright, at least a portion of the indicator 23 overlaps with the non-window area 17 when viewed in the front-to-rear direction.

This allows the diapers 20 inside to be seen from the outside, and the indicators 23 that overlap with the non-window areas 17 during display, etc., are prevented from reacting to ultraviolet light, thereby preventing deterioration of the indicators 23.

When the bottom end of the container 1 shown in FIG. 1 is in contact with the ground and the container 1 is in an upright position, the diaper 20 abuts against the bottom surface 13 of the container member 10 due to its own weight and is positioned in the center in the left-right direction. This state can be achieved, for example, by grasping the top end of the container member 10, lifting it up, gently shaking it up and down, and then slowly bringing the container 1 upright.

In addition, in the above description, when the lower end of the container 1 is in contact with the ground and the container 1 is in an upright position, at least a portion of the indicator 23 overlaps with the non-window area 17. However, as described above, the diaper 20 can be moved within the internal space. In other words, the diaper 20 can be brought into contact with the bottom surface 13 of the container member 10 and positioned at any position in the internal space in the left-right direction.

And, "when viewed in the front-to-rear direction, at least a portion of the indicator 23 overlaps with the non-window area 17 with the lower end of the container 1 in contact with the ground and the container 1 standing upright" does not mean that when the diaper 20 moves left-to-right inside the container member 10, "at least a portion of the indicator 23 overlaps with the non-window area 17 with the view in the front-to-rear direction" is satisfied at any position, but rather that it is sufficient if it is satisfied at any one position.

In addition, in the above embodiment, the diaper 20 is printed with a product pattern 25, and when the lower end of the container 1 is in an upright position with the container 1 in contact with the ground, at least a portion of the product pattern 25 can be seen from outside the container member 10 through the window area 16.

This allows consumers to check the product design 25 of the diaper 20 without opening it during display, etc.

In the above embodiment, the product design 25 includes at least one of the following: the name of the country in which the diaper 20 was manufactured, a logo of the company that manufactures or sells the diaper 20, a logo of the product name of the diaper 20, and a marking of the material used in the diaper 20.

This allows consumers to check at least one of the country of manufacture, manufacturer's logo, product name logo, and materials used for the diaper 20 without opening it during display, etc.

In the above embodiment, the diaper 20 has an abdomen 26 that contacts the wearer's abdomen and a back 27 that contacts the wearer's back, with the abdomen 26 and back 27 facing each other. The diaper 20 is stored so that the crotch side of the diaper 20 is located below the container 1, and has a crotch region 28 that is the lowest region when the diaper 20 is divided into four equal parts in the vertical direction when stored. When the bottom end of the container 1 is in a standing position with the container 1 on the ground, at least a portion of the crotch region 28 overlaps with the non-window region 17 when viewed in the front-to-rear direction.

In this way, since the indicator 23 is particularly needed in the crotch region 28, the overlap between the crotch region 28 and the non-window region 17 suppresses the reaction of the indicator 23 with ultraviolet light during display, etc., thereby suppressing deterioration of the indicator 23.

In addition, in the above embodiment, when the lower end of the container 1 is in contact with the ground and the container 1 is upright, the vertical length of the overlapping portion where the indicator 23 and the non-window area 17 overlap is longer than the vertical length of the overlapping portion where the indicator 23 and the window area 16 overlap.

This reduces the reaction between the indicator 23 and ultraviolet light during display, etc., compared to when the window area 16 is longer, thereby preventing deterioration of the indicator 23.

In addition, in the above embodiment, the storage member 10 has a two-layer structure composed of paper 10a and a resin sheet 10b.

In this way, the paper 10a can suppress deterioration of the indicator 23 due to ultraviolet rays, and the resin sheet 10b can suppress deterioration of the absorbent core 22a due to moisture, etc.

In addition, in the above embodiment, the window area 16 is an area of only the resin sheet 10b with no layer of paper 10a laminated thereon, and the window area 16 is provided continuously from one end to the other end in the left-right direction.

In this way, the window area 16 is provided to the ends in the width direction, making it easier for consumers to see the diaper 20 inside. In addition, good visibility reduces the frequency of opening the package, thereby reducing the possibility of moisture getting inside.

In addition, in the above embodiment, when the lower end of the container 1 is in an upright position with the lower end of the container 1 in contact with the ground, the upper and lower ends of the window region 16 overlap with the diaper 20 when viewed in the front-to-rear direction.

In this way, the boundary between the window region 16 and the non-window region 17 has a change in rigidity and is prone to bending, so by overlapping the upper and lower ends with the diaper 20, it becomes less likely to bend.

In addition, in the above embodiment, when the lower end of the container 1 is in contact with the ground and the container 1 is in an upright position, the upper end of the window area 16 is located above the center of the diaper 20 in the up-down direction when the diaper 20 is in the contained state.

In this way, the boundary between the window area 16 and the non-window area 17 changes in rigidity and is easily bent, making it easier to compact the storage member 10, for example, when a used diaper 20 is folded in half vertically and placed in the storage member 10 for disposal.

In addition, in the above embodiment, when the bottom end of the container 1 is in contact with the ground and the container 1 is in an upright position, the top-bottom relationship is reversed, and at least a portion of the indicator 23 overlaps with the non-window area 17 when viewed in the front-to-back direction.

In this way, when the container 1 is turned upside down (the container 10 is made of paper 10a, so there is a gap inside; in other words, when the diapers 20 have moved inside to the upper side of the container 10), the reaction between the indicator 23 and ultraviolet light is suppressed, and deterioration of the indicator 23 can be suppressed.

In addition, in the above embodiment, the paper 10a is unbleached.

As a result, since unbleached paper 10a contains more lignin than bleached paper, the reaction between the indicator 23 and ultraviolet light is suppressed compared to when bleached paper is used, and deterioration of the indicator 23 can be suppressed.

In the above embodiment, the storage member 10 has a front portion 11, a rear portion 12, and a bottom portion 13, and a gusset is provided between the lower end of the front portion 11 and the lower end of the rear portion 12 to form the bottom portion 13. No gusset is provided at the upper end of the storage member 10, and the bottom portion 13 is joined to at least one of the front portion 11 and the rear portion 12 at the lower end of the storage member 10.

In this way, the number of bonding layers between the components at the lower end of the housing member 10 is greater than the number of bonding layers between the components at the upper end of the housing member 10, so that the lower end of the housing member 10 is reinforced, exposure of the indicator 23 due to damage to the lower end is suppressed, and deterioration of the indicator 23 can be suppressed.

In the above embodiment, the diaper 20 has an abdominal portion 26 that contacts the wearer's abdominal side and a back portion 27 that contacts the wearer's back side, and the abdominal portion 26 and the back portion 27 face each other, and the diaper 20 is placed in the container member 10 so that the crotch side of the diaper 20 is located below the container 1.

The crotch side of the diaper 20 is thick, so the portion of the containing member 10 where the crotch side is located is prone to tearing, but compared to when the crotch side is on the upper side of the containing member 10, the number of bonding layers at the lower end of the containing member 10 is greater than the number of bonding layers at the upper end (because the lower end is more firmly bonded), so exposure of the indicator 23 due to damage to the containing member 10 is suppressed, and deterioration of the indicator 23 can be suppressed.

===Other embodiments===
The above-mentioned embodiment is for the purpose of facilitating understanding of the present invention, and is not intended to limit the present invention. The present invention can be modified or improved without departing from the spirit of the present invention, and it goes without saying that the present invention includes equivalents thereof.

In the above embodiment, as shown in FIG. 3, the front portion 11, rear portion 12, and bottom portion 13 are made of separate sheets that are joined together to form a three-sided shape, but this is not limited to the above. For example, the front portion 11 and bottom portion 13 may be made of a single member having the length of the front portion 11 and bottom portion 13 in the vertical direction, and the bottom portion 13 may be formed by folding the bottom side of the sheet.

In addition, in the above embodiment, the housing member 10 has a three-sided shape, but this is not limited to this. For example, the housing member may have six sides.

In the case of a six-sided container, unlike the three-sided container 10, any side can be used as the bottom and the container can stand on its own, so the concept of a bottom may be weak. In other words, the container containing diapers may have a weak concept of up-down, left-right, and front-to-back directions. For this reason, such six-sided containers are often designed so that consumers can check product information such as designs no matter which side is used as the bottom when the container is displayed. In other words, with such six-sided containers, the effects of the present invention can be obtained no matter which side is used as the bottom.

In addition, in the above embodiment, the storage member 10 has a two-layer structure of paper 10a and resin sheet 10b, but this is not limited to this. For example, the inner surface of the paper 10a may be coated with resin to replace the resin sheet 10b.

In addition, in the above embodiment, the innermost surface of the storage member 10 is entirely made of the resin sheet 10b, but this is not limited to this. For example, the upper side of the opening and closing seal portion 14 may be made of paper 10a.

In the above embodiment, at least a portion of the outermost surface of the diaper 20 is an opposing surface facing the container member 10, and the minimum value of the dynamic friction coefficient MIU on the surface of the diaper 20 closest to the skin (top sheet 22b) is smaller than the minimum value of the dynamic friction coefficient MIU on the opposing surface (outer body 21). However, this is not limited to the above, and the minimum value of the dynamic friction coefficient MIU on the opposing surface may be smaller than the minimum value of the dynamic friction coefficient MIU on the surface of the diaper closest to the skin.

In the former case (when the value of the top sheet is smaller than that of the outer body), the wearer is less likely to feel discomfort when the diaper rubs against the skin while wearing it, compared to when the kinetic friction coefficient MIU of the diaper 20 closest to the skin is greater than the kinetic friction coefficient MIU of the opposing surface. Also, when the innermost surface and the opposing surface rub against each other, the surfaces closest to the skin tend to slide against each other, so the opposing surface is more likely to move in conjunction with the innermost surface, which helps to suppress pilling.

In the latter case (when the value of the outer body is smaller than that of the top sheet), the diaper 20 is easier to remove from the container 10 than when the kinetic friction coefficient MIU of the opposing surface of the diaper 20 is greater than the kinetic friction coefficient MIU of the surface closest to the skin.

In addition, in the above embodiment, the back 27 of the diaper 20 and the window region 16 are accommodated facing each other, and as shown in FIG. 1, the back 27 of the diaper 20 can be seen from outside the accommodation member 10, but this is not limited thereto, and the abdomen 26 of the diaper 20 and the window region 16 may be accommodated facing each other.

In other words, when the bottom end of the container 1 is on the ground and the container 1 is upright, the abdomen 26 or back 27 faces the window area 16. This allows consumers to check the front or back of the diaper 20, which has a larger area than the sides, without opening the package during display, etc. (allowing them to see the entire diaper 20).

In the above embodiment, the diaper 20 is housed so that the back 27 and the window region 16 face each other, and the ventral indicator 23a extends further upward than the back indicator 23b, but this is not limited to the above. For example, the back indicator 23b may be longer than the ventral indicator 23a, and the ventral region 26 of the diaper 20 may face the window region 16, or the back 27 of the diaper 20 may face the window region 16. In other words, the longer side of the indicator 23 may face the window region 16, or it may be on the opposite side without facing the window region 16 (the shorter side faces).

In other words, when the longer indicator 23 does not face the window area 16, one of the abdomen 26 and the back 27 faces the window area 16, and the part of the indicator 23 located on the other side extends further upward in the vertical direction than the part of the indicator 23 located on the one side. In this way, the reaction of the indicator 23 with ultraviolet light during display, etc. is suppressed (fewer indicators 23 overlap with the window area 16) compared to when the longer part of the indicator 23 faces the window area 16, and deterioration of the indicator 23 can be suppressed.

In other words, when the longer indicator 23 faces the window region 16, one of the abdomen 26 and the back 27 faces the window region 16, and the portion of the indicator 23 located on one side extends further upward in the vertical direction than the portion of the indicator 23 located on the other side. In this way, compared to when the shorter portion of the indicator 23 faces the window region 16, deterioration of the crotch region 28 is suppressed in the non-window region 17, and the indicator 23 is easier for consumers to see from the outside during display, etc.

In addition, when the longer indicator 23 faces the window region 16 and the container 1 is upright, the length of the overlapping portion between the indicator 23 and the non-window region 17 is longer than the length of the overlapping portion between the indicator 23 and the window region 16. In other words, when the lower end of the container 1 is on the ground and the container 1 is upright, the vertical length of the overlapping portion where the portion located on one side overlaps with the non-window region 17 is longer than the vertical length of the overlapping portion where the portion located on one side overlaps with the window region. In this way, in the longer indicator 23, the indicator 23 can be viewed from the window region 16, while the length of the overlapping region is longer in the non-window region 17, so deterioration of the indicator 23 can be suppressed compared to when it is shorter.

In addition, in the above embodiment, the diaper 20 is placed in the container 10 so that the crotch side of the diaper 20 is located on the lower side of the container 1, but this is not limited to the above. For example, the crotch side of the diaper 20 may be located on the upper side. In other words, the diaper 20 may be placed in the container 10 so that the crotch side of the diaper 20 is located on the upper side of the container 1.

In the former case (when the crotch side is on the bottom), the bottom side of the container 10 has a gusset and spreads out, so by placing the crotch side, which is thicker than the diaper 20, on the bottom, it becomes easier to insert the diaper 20.

In the latter case (when the crotch side is on top), the crotch side of the diaper 20 has high rigidity, so by placing the crotch side on the opening and closing seal portion 14 side when storing, it becomes easier to pull the diaper 20 when removing it.

In addition, in the above embodiment, when the container 1 is in an upright position, the upper end of the window region 16 is below the upper end of the diaper 20, but this is not limited thereto, and the upper end of the window region 16 may be above the upper end of the diaper 20. In other words, when the container 1 is in an upright position with its lower end on the ground, the upper end of the window region 16 does not have to overlap with the diaper 20 when viewed in the front-to-rear direction.

This allows consumers to see all the way to one end of the diaper 20 without opening the container 1 when it is on display, etc.

In the above embodiment, as shown in FIG. 2, the pattern 15 is printed on the front portion 11 of the container 10, but not on the rear portion 12. However, this is not limiting, and the pattern 15 may be printed only on the rear portion 12 without being printed on the front portion 11. In other words, the pattern 15 may be printed on only one of the front portion 11 and the rear portion 12. In this way, it is possible to suppress rubbing of the pattern 15 on the container 10 and color transfer of the pattern 15 to the diaper 20, compared to when the pattern is printed on both.

In addition, in the above embodiment, the opening and closing seal portion 14 is resealable and can be opened and closed multiple times, but this is not limited to this. For example, the opening portion may be perforated and cannot be resealed once opened.

<Other aspects>
In addition, the following aspects are possible:

(Aspect 1)
The container 1 for the diaper 20 comprises a storage member 10 having at least a portion of its outermost surface made of paper 10a, and a diaper 20 contained in the storage member 10 and having at least a portion of its outermost surface made of nonwoven fabric (outer body 21), wherein the minimum value of the dynamic friction coefficient MIU at the innermost surface of the storage member 10 is smaller than the dynamic friction coefficient MIU of the outermost surface of the storage member 10 made of paper 10a.

Figure 11 shows the state in which the diaper 20 is being removed from the storage member 10. As shown in Figure 11, when removing the diaper 20 from the storage member 10, the opening and closing seal portion 14 is opened to widen the opening, and the diaper 20 is pulled and removed from the storage member 10. In other words, the diaper 20 is removed by being pulled out of the storage member 10, and the opposing surface of the diaper 20 rubs against the innermost surface of the storage member 10 as it is removed.

Diaper containers with container members made of paper have been known for some time, but containers made of paper have a higher coefficient of friction than containers made of resin sheets, etc., and this creates the problem that the diaper tends to get caught and fluff when removed from the container.

In contrast, in this embodiment, the minimum value of the dynamic friction coefficient MIU on the innermost surface of the storage member 10 (resin sheet 10b) is smaller than the dynamic friction coefficient on the outermost surface of the storage member 10 made of paper 10a.

In this way, while maintaining the appearance of the container 1 as paper, pilling of the exterior body 21 when the diaper 20 is removed can be suppressed compared to when the kinetic friction coefficient MIU of the innermost surface is greater than the kinetic friction coefficient MIU of the outermost surface.

(Aspect 2)
The container 1 for the diaper 20 is characterized in that at least a portion of the outermost surface of the diaper 20 is an opposing surface facing the container member 10, and the minimum value of the dynamic friction coefficient MIU at the innermost surface of the container member 10 (resin sheet 10b) is smaller than the minimum value of the dynamic friction coefficient MIU at the opposing surface (outer body 21).

This makes it possible to suppress pilling of the outer body 21 when the diaper 20 is removed, compared to when the dynamic friction coefficient MIU of the innermost surface is greater than the dynamic friction coefficient MIU of the opposing surface of the diaper 20.

(Aspect 3)
The container 1 for the diaper 20 is characterized in that the dynamic friction coefficient MIU of the outermost surface of the paper 10a is smaller than the maximum value of the dynamic friction coefficient of the outermost surface of the diaper 20 (the outer body 21).

This makes it possible to suppress pilling of the exterior body 21 caused by contact between the container member 10 and the diaper 20 after the diaper 20 is removed, compared to when the dynamic friction coefficient MIU of the outermost surface is greater than the dynamic friction coefficient MIU of the opposing surface of the diaper 20.

(Aspect 4)
The container 1 for diapers 20 is characterized in that the minimum value of the surface roughness SMD on the innermost surface of the container member 10 (resin sheet 10b) is smaller than the surface roughness SMD on the outermost surface of the container member 10 made of paper 10a.

In this way, the surface roughness SMD of the innermost surface of the container 10 is small, which prevents damage to the diaper 20 due to friction, and the surface roughness SMD of the outermost surface is large, which makes it easy for fingers to catch and makes the container 1 easy to hold.

(Aspect 5)
The container 1 for the diaper 20 is characterized in that at least a portion of the outermost surface of the diaper 20 is an opposing surface facing the container member 10, and the minimum value of the surface roughness SMD at the innermost surface of the container member 10 (resin sheet 10b) is smaller than the minimum value of the surface roughness SMD at the opposing surface (outer body 21).

In this way, the surface roughness SMD of the innermost surface of the storage member 10 is small, which prevents damage to the diaper 20 due to friction, and the surface facing the diaper 20 has a large surface roughness SMD, which makes it easy for fingers to catch and for the diaper 20 to be removed from the storage member 10.

(Aspect 6)
The container 1 for diapers 20 has a top-bottom direction, a left-right direction, and a front-rear direction which intersect with each other, and an opening-closing seal section 14 which is provided at the upper end of the container member 10 and which is opened when the diaper 20 is removed, and when the lower end of the container 1 is in a grounded state and the container 1 is upright, a gap is provided between the diaper 20 and the opening-closing seal section 14.

Figure 12 shows the state in which the diaper 20 is being removed by inserting a hand into the gap in the storage member 10. As shown in Figure 12, when removing the diaper 20, the hand can be inserted into the gap, and the fingers can also be inserted between the storage member 10 and the diaper 20 to remove it, making it easier to spread the storage member 10 with the fingers, and reducing the risk of rubbing the diaper 20 when removing it.

(Aspect 7)
The container 1 for the diaper 20 is characterized in that the openable/closable seal portion 14 is located below the upper end of the container member 10.

In this way, compared to when the opening and closing seal portion 14 is present at the top end of the container member 10, a larger gap is formed (the gap plus the portion from the opening and closing seal portion 14 to the top end), making it easier for the container member 10 to be spread apart by the fingers, and making it even less likely that the diaper 20 will be rubbed when removed.

(Aspect 8)
The container 1 contains a plurality of diapers 20, and the diapers 20 are arranged side by side in the front-rear direction but not arranged side by side in the up-down direction and the left-right direction.

In this way, compared to when there are two or more rows of diapers 20, there is no contact between the rows, which helps prevent the rows of diapers 20 from losing their shape.

(Aspect 9)
The container 1 for diapers 20 has a two-layer structure of paper 10a and a resin sheet 10b, and the innermost layer of the container 10 is made of the resin sheet 10b.

This makes the innermost surface smooth, which helps prevent the outer body 21 from fraying when the diaper 20 is removed from the container 10.

(Aspect 10)
The container 1 for diapers 20 has a top-bottom direction, a left-right direction, and a front-rear direction which intersect with each other, and the container member 10 has a non-window area 17 where the paper 10a and the resin sheet 10b overlap, and a window area 16 of only the resin sheet 10b, and the window area 16 is provided continuously from one end to the other end in the left-right direction.

In this way, the window region 16, which has low rigidity, is provided continuously from one end to the other in the left-right direction, so that a change in rigidity occurs at the boundary between the window region 16 and the non-window region 17 from one end to the other in the left-right direction, and this location makes it easier to bend in the vertical direction. This bending makes it difficult for the diaper 20 to move within the container member 10, and pilling can be suppressed.

(Aspect 11)
The container 1 for a diaper 20 has a top-bottom direction, a left-right direction, and a front-rear direction which intersect with each other, the container member 10 has a front portion 11, a rear portion 12, and a bottom portion 13, a gusset is provided between the lower end of the front portion 11 and the lower end of the rear portion 12 to form the bottom portion 13, and no gusset is provided at the upper end of the container member 10.

In other words, since the bottom end cannot be widened (there is no opening), by providing a gusset in advance to widen the bottom side of the container member 10, it is possible to prevent the container member 10 and the diaper 20 from rubbing against each other when the diaper 20 is removed.

(Aspect 12)
The container 1 for the diaper 20 comprises a container member 10 and a diaper 20 housed in the container member 10 and having an absorbent core 22a, wherein a pattern 15 is printed on the container member 10, and when the diaper 20 is located at a certain position within the container member 10, at least a part of the pattern 15 does not overlap with the absorbent core 22a when viewed in the thickness direction of the diaper 20.

If product information or other patterns are printed on the container, for example, when multiple containers are packed in a single cardboard box, the containers may be pressed closely together, and the thickest part of the absorbent core of the diaper may be compressed strongly. This may cause the pattern to rub off or the ink to bleed through to the diaper.

In contrast, in this embodiment, when the diaper 20 is positioned at a certain position within the container 10, at least a portion of the pattern 15 does not overlap the absorbent core 22a when viewed in the thickness direction of the diaper 20. In other words, by not overlapping at least a portion of the pattern 15 with the absorbent core 22a, which is the thickest in the diaper 20, it is possible to prevent the pattern 15 from rubbing against each other between adjacent containers 1 and the color transfer of the pattern 15 to the diaper 20 during packaging in which multiple containers 1 are arranged side by side.

Note that "when the absorbent article (diaper 20) is located at a certain position in the container 10, at least a part of the pattern 15 does not overlap with the absorbent core 22a when viewed in the thickness direction of the absorbent article (diaper 20)" does not mean that when the diaper 20 moves inside the container 10, at any position, "when viewed in the thickness direction of the absorbent article (diaper 20), at least a part of the pattern 15 does not overlap with the absorbent core 22a" is satisfied, but rather that it is sufficient if it is satisfied at any one position. The "when the absorbent article (diaper 20) is located at a certain position in the container 10" described below has the same meaning.

(Aspect 13)
The container 1 for the diaper 20 is characterized in that, when the diaper 20 is located at a certain position in the container member 10 and viewed in the thickness direction of the diaper 20, at least a part of the pattern 15 does not overlap with the diaper 20.

This prevents the patterns 15 and the diapers 20 from overlapping, which can prevent the patterns 15 from rubbing against each other between adjacent containers 1 and the color transfer of the patterns 15 to the diapers 20 when packing multiple containers 1 side by side.

(Aspect 14)
The container 1 for the diaper 20 is characterized in that, when the diaper 20 is located at a certain position in the container member 10 and viewed in the thickness direction of the diaper 20, the area where the pattern 15 and the diaper 20 do not overlap is larger than the area where the pattern 15 and the diaper 20 overlap.

This can reduce rubbing of the pattern 15 and color transfer of the pattern 15 onto the diaper 20 compared to when the non-overlapping area is small.

(Aspect 15)
At least a portion of the outermost surface of the storage member 10 is made of paper 10a, the storage member 10 has an internal space therein, the internal space having a space in which the diaper 20 is present and a gap space in which the diaper 20 is not present, and when the diaper 20 is positioned at a certain position within the storage member 10, at least a portion of the pattern 15 overlaps with the gap space when viewed in the thickness direction of the diaper 20.

In this way, since the diaper 20 does not exist in the gap space, rubbing of the pattern 15 that overlaps with such parts and color transfer of the pattern 15 to the diaper 20 can be suppressed.

(Aspect 16)
The container 1 for the diaper 20 has a two-layer structure of paper 10a and resin sheet 10b, with the layer of resin sheet 10b being provided inside the layer of paper 10a.

In this way, the resin sheet 10b prevents the ink of the pattern 15 from seeping into the internal space, thereby preventing color transfer of the pattern 15 onto the diaper 20.

(Aspect 17)
The container 1 for diapers 20 is characterized in that the minimum value of the static friction coefficient μs on the innermost surface of the container member 10 is smaller than the static friction coefficient μs on the outermost surface of the container member 10 made of paper 10a.

In this way, the diapers 20 in the internal space are more likely to move inside due to the shaking of the container 1 during transport, etc., compared to when the minimum value of the static friction coefficient μs of the innermost surface is large, so that it is possible to prevent the container member 10 from moving due to the movement of the diapers 20, and thus to prevent rubbing of the pattern 15 on the container member 10.

(Aspect 18)
The container 1 for a diaper 20 has a top-bottom direction, a left-right direction, and a front-rear direction which intersect with each other, the container member 10 has a front portion 11, a rear portion 12, and a bottom portion 13, a gusset is provided between the lower end of the front portion 11 and the lower end of the rear portion 12 to form the bottom portion 13, no gusset is provided at the upper end of the container member 10, and at least a part of a pattern 15 is located at the upper part of the container member 10.

In this way, the distance between the front portion 11 and the rear portion 12 at the center in the left-right direction is shorter at the top than at the bottom, so by printing the pattern 15 at the top, the distance between the patterns 15 of adjacent containers 1 can be increased, preventing the pattern 15 on the container member 10 from rubbing against each other and preventing the color transfer of the pattern 15 onto the diaper 20.

(Aspect 19)
The container 1 for diapers 20 has a vertical direction, a horizontal direction, and a front-rear direction which intersect with each other, an opening/closing seal part 14 is provided at the upper end of the container member 10 to be opened when removing the diapers 20, and no pattern 15 is printed on the opening/closing seal part 14.

In this way, the pattern 15 is not printed on the opening and closing seal portion 14 that is touched when opening the container 1, which prevents ink from transferring to the hands and prevents the pattern 15 from rubbing off.

(Aspect 20)
The container 1 for the diaper 20 is characterized in that the open/close seal portion 14 can be resealed after being opened.

This allows the diaper 20 to be put in and taken out by resealing it multiple times, and since the pattern 15 is not printed on the opening and closing seal 14, which is touched multiple times when putting the diaper 20 in and taking it out, it is possible to further prevent ink from transferring to the hands and the pattern 15 from rubbing off. Even if it is opened once, the container member 10 can be resealed by the opening and closing seal 14 every time it is used, preventing moisture from entering. Furthermore, since it can be resealed, it is possible to prevent the diaper 20 from being exposed to ultraviolet rays through the opening.

(Aspect 21)
The container 1 for diapers 20 is characterized in that the opening and closing seal part 14 is located below the upper end of the container member 10, and no pattern 15 is printed on the upper side of the opening and closing seal part 14.

This allows the diaper 20 to be resealed multiple times to be inserted and removed, and since the pattern 15 is not printed on the upper side of the opening and closing seal portion 14, which is touched multiple times when inserting and removing the diaper 20, ink transfer onto the hands and rubbing of the pattern 15 can be further prevented.

(Aspect 22)
The pattern 15 is a storage section pattern 15, a product pattern 25 is printed on the diaper 20, and the container 1 for the diaper 20 is characterized in that the maximum ink density of the storage section pattern 15 is darker than the maximum ink density of the product pattern 25.

In this way, the storage section pattern 15 can be displayed more clearly and is easier to see than when the ink density of the storage section pattern 15 is light (thick ink density can easily cause color transfer, but by the above embodiment, such as not overlapping the storage section pattern 15 with the absorbent core 22a, it is possible to prevent rubbing of the storage section pattern 15 on the storage member 10 and color transfer of the storage section pattern 15 to the diaper 20). Also, when the ink density of the product pattern 25 is lighter than when it is dark, consumers are more likely to have an image of the diaper 20 being gentle on the skin.

(Aspect 23)
An absorbent article container comprising an absorbent article and a storage member for storing the absorbent article, the storage member having an outermost layer at least in part made of paper and an innermost layer at least in part made of a material (resin sheet 10b) having lower moisture permeability than the paper, and the mass of the paper constituting the outermost layer accounts for more than 50% of the mass of the storage member.

This type of absorbent article container is made not only of paper, but also of a layer on the inside made of a material with lower moisture permeability than paper, which prevents moisture from entering the container and ensures good moisture resistance. Furthermore, since the mass ratio of paper exceeds 50%, it is eligible for the "paper container packaging" identification mark, making it possible to provide an environmentally friendly container.

(Aspect 24)
A container for absorbent articles having a vertical direction, a horizontal direction, and a front-to-back direction which intersect with each other, the container member having a pair of side seal portions joined along the vertical direction at both ends in the horizontal direction, and a bottom seal portion joined along the left-to-right direction at a lower end in the vertical direction, the pair of side seal portions and the bottom seal portion having a low moisture permeability material provided in the innermost layer of one surface constituting the container member and a low moisture permeability material provided in the innermost layer of a surface other than the one surface, which are adjacent to each other in the front-to-back direction and welded together.

In this type of absorbent article container, the low moisture permeability material provided in the innermost layer is welded to each other at all seal portions of the container member, making it difficult for moisture to enter the container.

(Aspect 25)
A container for absorbent articles having a vertical direction, a horizontal direction, and a front-to-rear direction which intersect with each other, and characterized in that the low moisture permeability material provided in the outermost layer and the innermost layer is provided above and below the opening portion in the vertical direction.

With this type of absorbent article container, the upper side of the opening section is the part that is gripped when opening the container, and since this upper side is provided with not only the outermost layer but also a material with low moisture permeability, this gripped part is less likely to tear.

(Aspect 26)
The storage member has a window region, at least a portion of which consists only of a resin sheet, and a non-window region where the paper and the resin sheet overlap, and the surface area of the window region is smaller than the surface area of the non-window region.

With such an absorbent article container, the absorbent articles inside the container can be checked through the window area, and minimizing the window area reduces the possibility of moisture entering the inside of the container. Also, minimizing the window area reduces the possibility of exposure to ultraviolet rays.

(Aspect 27)
A container for absorbent articles, characterized in that a pattern is provided on the outermost layer, and the pattern is made of water-based ink.

With this type of absorbent article container, by using water-based ink, it is possible to reduce the amount of petroleum-derived organic solvents used compared to when images are formed using oil-based ink. This makes it possible to realize a container that is more environmentally friendly. In addition, because the outermost layer, which is the printing medium, is made of paper, the water-based ink adheres easily, and even patterns that look worn can be printed stably.

(Aspect 28)
A container for an absorbent article comprising an absorbent article and a storage member for storing the absorbent article, the storage member having a paper layer at least a portion of which is made of paper, and at least a portion of the paper layer having an unbleached pulp region made of unbleached pulp.

In such an absorbent article container, the unbleached pulp region is less likely to transmit light, and by storing the absorbent article in a container member having such an unbleached pulp region, the effect of ultraviolet rays on materials that tend to yellow, such as elastic materials such as rubber and urethane, which are often contained in absorbent articles, liquid-impermeable films, and inks (inks used to print films, target tapes, indicators, etc.), can be reduced, and yellowing of the absorbent article can be suppressed.

(Aspect 29)
A container for absorbent articles, characterized in that at least a portion of the outer surface of the unbleached pulp region of the container member is provided with a pattern.

In this type of absorbent article container, if a pattern is provided on the outer surface of a paper layer made of bleached pulp, the absorbent article contained therein may show through and the pattern may be difficult to see; however, since the unbleached pulp area is thick and brown or dark brown, the contents do not show through and the pattern is easy to see.

(Aspect 30)
An absorbent article container having vertical, horizontal, and front-to-back directions which intersect with each other, a pattern provided on at least a portion of the outermost surface of the absorbent article, the pattern provided in the unbleached pulp area being a container member pattern and the pattern provided on the absorbent article being a product pattern, and when the absorbent article is positioned at a certain position within the container member, the container member pattern and the product pattern have an overlapping portion when viewed in the front-to-back directions.

In this type of absorbent article container, the unbleached pulp area is thick and brown or dark brown, etc., so even if the pattern in the unbleached pulp area overlaps with the pattern in the absorbent article, the pattern in the absorbent article does not show through, and the visibility of the pattern in the unbleached pulp area can be maintained.

(Aspect 31)
An absorbent article container comprising an absorbent article and a container member for housing the absorbent article, the container member having an outermost layer at least a portion of which is made of paper, and at least a portion of a pattern is printed in the outermost layer in an area having a Beck smoothness of less than 20 seconds.

In the above embodiment, uncoated paper having an area where the Beck smoothness is less than 20 seconds is used as the outermost layer, and printing is performed so that at least a part of the pattern 15 overlaps with the area. Note that Beck smoothness is a value expressed by the time (seconds) required for a certain amount of atmospheric air to flow under a specific initial pressure difference between a test piece and a ring-shaped flat surface that are in contact under specific conditions, and the smaller the Beck smoothness (the smaller the number of seconds), the lower the smoothness. Beck smoothness can be measured based on "Paper and cardboard - Smoothness test method using a Beck smoothness tester" specified in JIS P 8119-1998.

According to the JBMS-32-2002 standard "Cut paper for electrophotographic copiers and printers" established by the Business Machine and Information System Industries Association, the recommended Beck smoothness value, which serves as a guideline when selecting cut paper to be used in printers, etc., is 20 to 150 seconds. This value does not guarantee image performance, but it is at least a standard range for normal printing with little rubbing. Therefore, if printing is performed on media with a Beck smoothness lower than the recommended lower limit of 20 seconds, there is a high possibility that rubbing will occur in the image.

Figure 13 is a table showing the measured Beck smoothness values for the sheet members (samples A to C) made of paper material used as the outermost layer. The Beck smoothness was measured according to the method described above in JIS P 8119-1998. As shown in Figure 13, the Beck smoothness of all of the sheet members A to C is 5.3 seconds or less, which is smaller than the lower limit of 20 seconds for Beck smoothness specified in JBMS-32-2002. In other words, the smoothness is lower than that of the printing paper recommended in JBMS-32-2002. It was confirmed that when printing was actually performed on these sheet members (samples A to C) using water-based ink, density unevenness was easily generated in parts of the pattern 15 formed, making the pattern 15 look rubbed.

Therefore, by using a sheet member (paper) having an area with a Beck smoothness of less than 20 seconds, preferably 5.3 seconds or less, as the outermost layer of the storage member 10 and printing the pattern 15 in that area, the formed pattern 15 appears to be rubbed. This makes it easier for the user to imagine the texture and soft image of the storage member 10 and the absorbent article such as the diaper 20 stored therein being made of paper.

(Aspect 32)
The container for absorbent articles has a top-bottom direction, a left-right direction, and a front-to-back direction which intersect with each other, the pattern has a first part and a second part which is different from the first part, and the positions of the first part and the second part are different in the front-to-back direction.

In addition, by adjusting the arrangement of the design 15 printed on the storage member 10, it is possible to more easily evoke a soft image of the storage body 1 for the user. Figure 14A is a perspective view of the storage body 1, and is a diagram explaining the arrangement of the design 15 provided on the storage member 10. Figure 14B is a schematic cross-sectional view showing the X-X cross section of Figure 14A.

As shown in Fig. 1 and Fig. 14A, a plurality of patterns 15, 15... are provided on the outermost surface of the storage member 10. Of the plurality of patterns 15, the pattern provided on the right end of Fig. 14A is designated as pattern 151. Furthermore, when the portion of pattern 151 located at the left end in the left-right direction is designated as first portion 151A, and the portion located at the right end in the left-right direction is designated as second portion 151B, pattern 151 is arranged such that the position of first portion 151A differs from the position of second portion 151B in the front-rear direction.

The container 10 containing the absorbent article is bulged in the front-rear direction in the region in which the absorbent article is contained. In FIG. 14B, the front portion 11 and the rear portion 12 are joined to each other at the side seal portions ss at both left-right ends, and the thickness of the container 10 in the front-rear direction is at its thinnest. From both left-right ends toward the inside (center), the front portion 11 and the rear portion 12 are curved, and the distance between them in the front-rear direction increases. In other words, the thickness of the container 10 in the front-rear direction increases. The region where the front portion 11 and the rear portion 12 are curved is called the curved region 10cr (see FIG. 14B). The thickness of the container 10 in the front-rear direction is at its thickest in the center in the left-right direction.

14B, the first portion 151A of the pattern 151 is arranged at a position overlapping the curved region 10cr, and the second portion 151B is arranged at a position overlapping the side seal portion ss. In this way, the first portion 151A and the second portion 151B of the pattern 151 are arranged at different positions in the front-to-back direction, so that the pattern 151 appears three-dimensional in the front-to-back direction. Therefore, compared to when the pattern 151 appears flat, the three-dimensionally expanded shape of the storage member 10 is emphasized, making it easier to create a soft impression of the storage body 1 as a whole. In particular, since the pattern 151 is arranged so as to overlap widely with the curved region 10cr of the storage member 10, the pattern appears as a rounded curved surface, giving the user a softer impression.

(Aspect 33)
A container for absorbent articles, characterized in that at both ends in the left-right direction, one surface constituting the storage member and a surface different from the one surface are adjacent in the front-to-back direction and have welded side seal portions, the first portion is positioned in a position that does not overlap with the side seal portion, and the second portion is positioned in a position that overlaps with the side seal portion.

In this type of absorbent article container, the pattern is arranged across the flat area that overlaps with the side seal and the curved area that does not overlap with the side seal, making the pattern appear more complex and three-dimensional, making it easier for the user to imagine a soft image of the container.

(Aspect 34)
A container for absorbent articles, characterized in that at least a portion of the outermost layer is cut out to form a window portion where the innermost layer is exposed to the surface side.

This type of absorbent article container allows the user to see the soft absorbent article, such as a disposable diaper, from outside the container through the window. This makes it easier for the user to imagine the softness of the container.

(Aspect 35)
An absorbent article container characterized in that an innermost layer, at least a portion of which is made of resin, is laminated on the back side of the outermost layer, and the average dynamic friction coefficient of the innermost layer of the container member is smaller than the average dynamic friction coefficient of the outermost layer of the container member.

In this type of absorbent article container, the average value of the dynamic friction coefficient in the outermost layer of the container member is large, which makes the surface shape of the outermost layer more likely to be uneven and makes it easier to form (print) a rubbed pattern. And, the average value of the dynamic friction coefficient in the innermost layer of the container member is small, which reduces the frictional force generated between the innermost layer and the absorbent article, making it easier to smoothly remove the absorbent article.

(Aspect 36)
An absorbent article container comprising an absorbent article and a storage member for storing the absorbent article, the storage member having an outermost layer at least in part made of paper and an innermost layer at least in part made of resin, the resin constituting the innermost layer containing biomass plastic.

With this type of absorbent article container, by making the surface (outermost layer) of the container member out of paper, it is possible to make it easier for the user to remember that the container is an environmentally friendly product. On the other hand, by making the back surface (innermost layer) of the container member out of resin, moisture resistance is improved and it is possible to prevent the absorbent article contained inside from becoming damp. Furthermore, because the resin that makes up the innermost layer contains biomass plastic, it is possible to reduce the content of petroleum-derived substances compared to conventional products. As a result, it is possible to provide an absorbent article container that has excellent moisture resistance and is environmentally friendly.

(Aspect 37)
A container for absorbent articles, characterized in that the weight of the biomass plastic contained in the resin constituting the innermost layer is 10% or more of the weight of the container member.

This type of absorbent article container can meet the standard for the biomass plastic content (biomass plastic content of 10% or more) set out in the Biomass Plastic Identification System established by the Japan Bioplastics Association. This makes it possible to display the certification mark of the system (biomass mark 10%), making it easier for users to recognize that the container is an environmentally friendly product.

(Aspect 38)
A container for an absorbent article, wherein at least a portion of a component constituting the absorbent article contains biomass plastic.

By using such a container for absorbent articles, the absorbent article also contains biomass plastic, making it easier for users to recognize that it is an environmentally friendly product, and allowing users to use the absorbent article with peace of mind.

(Aspect 39)
A container for an absorbent article, characterized in that the ratio of the weight of the biomass plastic contained in the absorbent article to the weight of the container member is greater than the ratio of the weight of the biomass plastic contained in the absorbent article to the weight of the absorbent article.

With this type of absorbent article container, the content of biomass plastics in the container member can be made higher than the content of biomass plastics in the absorbent article, thereby reducing the content of petroleum-derived raw materials in the container member. This makes it possible to reduce the amount of petroleum-derived raw materials used and realize a more environmentally friendly absorbent article container.

(Aspect 40)
A container for absorbent articles, characterized in that the container has a top-bottom direction, a left-right direction, and a front-to-back direction which intersect with each other, and at both ends in the left-right direction and at the bottom end in the top-to-bottom direction, the resin on one surface constituting the container member and the resin provided in the innermost layer of a surface other than the one surface are adjacent to each other in the front-to-back direction and welded together.

In this type of absorbent article container, opposing resin materials are joined together using a welding means, so that both left and right sides and the bottom end in the up and down direction of the container member are tightly sealed. This makes it difficult for moisture to enter the inside of the container (storage space), improving moisture resistance.

(Aspect 41)
An absorbent article container having a top-bottom direction, a left-right direction, and a front-to-back direction that intersect with each other, comprising an absorbent article and a storage member (110) for storing the absorbent article, wherein the storage member (110) has an outermost layer at least in part made of paper and an innermost layer at least in part made of resin, the storage member (110) has a gusset fold structure in which the outermost layers are folded inward from both outer sides in the top-to-bottom direction so that they face each other in the front-to-back direction, and at both left-to-right end portions of the storage member (110), it has joint portions where the innermost layers are joined at the portions that face each other in the front-to-back direction, and it has non-joint portions where the outermost layers are not joined at the portions that face each other in the front-to-back direction.

Figure 15 is a diagram for explaining a storage member 110 having gusset folds G1 and G2. In the storage member 110, as shown in Figure 15A, the sheet members overlapped in the front-rear direction are joined at one end in the left-right direction to form a locking portion SW1. In the locking portion SW1, the innermost layers (resin sheets 10b) arranged opposite each other in the thickness direction, including the gusset folds G1 and G2, are welded and joined to each other using a known welding method such as heat welding. Since the opposing innermost layers are both resin sheet members having thermoplastic properties, the opposing sheet members can be joined to each other with sufficient strength by using a welding method such as heat welding.

After one end in the left-right direction is locked by locking portion SW1, the gusset fold portions G1, G2 are expanded to form a storage space with a generally rectangular cross section, and absorbent articles are stored in the storage space from the other left-right side and sealed by locking portion SW2. In a storage member 110 having a gusset fold structure, the gusset-folded portion of the sheet material that constitutes the exterior spreads out as a so-called "gusset," so that a large storage space can be formed inside. In other words, the volume of the storage space is increased, making it possible to store many absorbent articles.

In this type of absorbent article container, the outermost layers of the fastening parts provided at both left and right ends of the paper-containing container member 110 have non-jointed sections, so the joining strength is not too strong and the fastening parts are easier to open compared to conventional film container members in which the entire fastening part is welded. In addition, because the surface of the package is made of paper, it is easier for users to remember that it is an environmentally friendly product.

(Aspect 42)
A container for absorbent articles, characterized in that the entire portions of the outermost layers facing each other in the front-rear direction at both ends in the left-right direction of the container member 110 are non-jointed portions.

When opening the container for absorbent articles like this, the two opposing surfaces (outermost layers) arranged opposite each other in the front-to-rear direction are not joined to each other, making it easier to separate the two opposing surfaces in the front-to-rear direction when opening the container for absorbent articles like this. This makes it easier for the user to peel off the engaging portion and open the container.

(Aspect 43)
The storage member 110 is a storage body for absorbent articles, characterized in that it has side seal portions at both ends in the left-right direction, in which the resins constituting the innermost layer are welded together in a state adjacent to each other in the front-to-back direction, and a back seal portion at a rear side in the front-to-back direction, in which the resins constituting the innermost layer are welded together in a state adjacent to each other in the front-to-back direction.

With this type of absorbent article container, the sheet members made of thermoplastic resin are placed opposite each other and joined using a welding means, so that both sides in the left-right direction and the rear side in the front-to-rear direction are securely sealed. In other words, the entire innermost layer surrounding the storage space of the storage member 110 is sealed. This makes it difficult for moisture to enter the inside of the container, further improving moisture resistance.

(Aspect 44)
The storage member 110 is a storage body for absorbent articles, characterized in that the portions of the innermost layers facing each other in the front-to-back direction are not joined in a region of a predetermined width from the outermost end in the left-right direction.

With this type of absorbent article container, the sheet members (innermost layers) are not joined together at the outer left and right ends, forming so-called dry edges. This makes it easier to open the container by peeling off the locking parts at both left and right ends, as the dry edges become the peeling starting points for peeling off the locking parts (sealed parts).

1. Container (container for absorbent article),
10 Storage member, 11 Front side portion, 12 Rear side portion, 13 Bottom surface portion (gusset),
14 Opening and closing seal part (opening part), 15 Design (storage part design),
15a first design, 15b second design, 15c third design, 15d fourth design,
16 window portion, 17 non-window portion,
20 Diapers (absorbent articles),
21 Exterior body,
22 absorbent body, 22a absorbent core, 22b top sheet, 22c back sheet 23 indicator, 23a ventral indicator, 23b dorsal indicator 24 tape, 25 product design, 25a first product design,
25b second product design, 25c third product design, 25d fourth product design,
26 abdomen, 27 back, 28 crotch area,
CL center position, QL center position,
SS side seal part, G1 gusset fold part, G2 gusset fold part,
110 Storage member

Claims (14)

The vertical direction, the horizontal direction, and the front-rear direction intersect with each other,
An absorbent article container including a container member and an absorbent article that is contained in the container member and has an indicator that detects body waste,
The container member is provided with a window area through which the absorbent article can be viewed from the outside and a non-window area through which the absorbent article cannot be viewed from the outside,
When the lower end of the container is in an upright position with the container touching the ground, at least a portion of the indicator overlaps with the non-window region when viewed in the front-rear direction;
The absorbent article has an abdominal portion that contacts a abdominal side of a wearer and a back portion that contacts a back side of the wearer, the abdominal portion and the back portion being opposed to each other,
The absorbent article is stored such that a crotch side of the absorbent article is located below the storage body, and has a crotch region that is the lowest region when the absorbent article in the stored state is divided into four equal parts in the vertical direction,
The indicator is provided at least in the crotch region,
When the lower end of the container is in an upright position with the container on the ground, the entire crotch region overlaps with the non-window region when viewed in the front-rear direction;
A plurality of the absorbent articles are accommodated in the accommodation member,
The plurality of absorbent articles are arranged in the front-rear direction and in the thickness direction of the absorbent article, but are not arranged in the up-down direction and the left-right direction,
The housing member has a front side portion and a rear side portion in the front-rear direction,
The window area is provided only in the front portion,
When the lower end of the housing is in an upright position with the housing in contact with the ground,
a length in the up-down direction of an overlapping portion where the indicator and the non-window region overlap is longer than a length in the up-down direction of an overlapping portion where the indicator and the window region overlap;
In a state in which the lower end of the container is on the ground and the container is upright, the upside-down relationship is reversed.
A container for absorbent articles, characterized in that at least a portion of the indicator overlaps with the non-window region when viewed in the front-to-rear direction . The container for the absorbent article according to claim 1,
The absorbent article has a product design printed thereon,
A container for absorbent articles, characterized in that when the lower end of the container is grounded and the container is upright, at least a portion of the product design can be seen through the window area from outside the container member. The container for the absorbent article according to claim 2,
An absorbent article container characterized in that the product design includes at least one of the following symbols: the name of the country in which the absorbent article was manufactured, the logo of the company name that manufactures or sells the absorbent article, the logo of the product name of the absorbent article, and the material used in the absorbent article. A container for an absorbent article according to any one of claims 1 to 3,
A container for absorbent articles, characterized in that when the container is in an upright position with its lower end on the ground, the abdominal portion or the back portion faces the window region. A container for an absorbent article according to any one of claims 1 to 4,
A container for absorbent articles, characterized in that an opening portion that is opened when removing the absorbent articles is provided along the left-right direction at an upper end of the container member. A container for an absorbent article according to any one of claims 1 to 5,
The absorbent article has, as the indicator, a portion located in the abdominal region and a portion located in the back region,
one of the abdominal portion and the dorsal portion faces the window region;
A container for absorbent articles, characterized in that a portion of the indicator positioned at the other one of the indicators extends further upward in the vertical direction than a portion of the indicator positioned at the other one of the indicators. A container for an absorbent article according to any one of claims 1 to 5,
The absorbent article has, as the indicator, a portion located in the abdominal region and a portion located in the back region,
one of the abdominal portion and the dorsal portion faces the window region;
A container for absorbent articles, characterized in that the portion of the indicator located at the one side extends further upward in the up-down direction than the portion of the indicator located at the other side. A container for an absorbent article according to any one of claims 1 to 7 ,
The container for absorbent articles is characterized in that the container member has a two-layer structure portion constituted by paper and a resin sheet. The container for the absorbent article according to claim 8 ,
the window region is a region of only the resin sheet where the paper layer is not laminated,
an upper end of the window area is located below an upper end of the storage member, and a lower end of the window area is located above a lower end of the storage member;
The container for absorbent articles is characterized in that the window area is provided continuously along the left-right direction from one end to the other end in the left-right direction. The absorbent article container according to claim 9 ,
A container for absorbent articles, characterized in that when the lower end of the container is on the ground and the container is upright, the upper and lower ends of the window area overlap with the absorbent article when viewed in the front-to-back direction. The container for the absorbent article according to claim 9 ,
A container for absorbent articles, characterized in that when the lower end of the container is on the ground and the container is upright, the upper end of the window area is located above the center of the absorbent article in the vertical direction when stored. The container for the absorbent article according to claim 9 ,
A container for absorbent articles, characterized in that when the lower end of the container is on the ground and the container is upright, the upper end of the window area does not overlap with the absorbent article when viewed in the front-to-back direction. A container for an absorbent article according to any one of claims 8 to 12 ,
A container for absorbent articles, wherein the paper is unbleached. A container for an absorbent article according to any one of claims 1 to 13 ,
The housing member has a bottom surface,
a gore for forming the bottom surface portion is provided between a lower end portion of the front side portion and a lower end portion of the rear side portion;
The upper end of the housing member is not provided with the gusset,
A container for absorbent articles, characterized in that at a lower end of the container member, the bottom portion is joined to at least one of the front portion and the rear portion.

Images