KR102685753B1 - absorbent article - Google Patents

Abstract

An absorbent article that can improve the visibility of an indicator is provided. The absorbent article 10 includes an indicator pattern 80 including an indicator that changes color due to urine. The indicator pattern 80 includes a high basis weight portion 81 and a low basis weight portion 82. The high basis weight portion 81 is formed at the edge of the indicator pattern 80 in one direction.

Description

absorbent article

The present invention relates to an absorbent article containing an indicator that changes color with urine.

For example, absorbent articles such as diapers are provided with indicators that change color due to urine (Patent Document 1). The absorbent article described in Patent Document 1 has a character pattern formed on an outer cover and a plurality of discretely arranged indicator patterns. In Patent Document 1, the character pattern and the indicator pattern are formed by patterns that are related to each other. Thereby, an absorbent article with high design can be provided.

Patent Document 1: Japanese Patent No. 4721598

The indicator formed on the absorbent article changes color in response to urine. These indicators change color with urine. However, other decorative parts such as character patterns exist around the indicator. Therefore, there is a need for improvement in the visibility of the indicator, and there is room for improvement.

Therefore, an absorbent article that can improve the visibility of the indicator is desired.

An absorbent article according to one aspect includes an indicator pattern including an indicator that changes color due to urine, wherein the indicator pattern includes a high basis weight portion and a low basis weight portion, and the high basis weight portion includes the indicator in a first direction. It is formed at the edge of the pattern.

An absorbent article according to another aspect is formed in a front waist region, a back waist region, a crotch region between the front waist region and the back waist region, and at least the crotch region, and is discolored by urine. It includes an indicator pattern including an indicator, and a back-side pattern that is visible from the non-skin surface side and is different from the indicator pattern. The indicator pattern formed at least in the crotch region includes a pattern formed by the indicator and a separation element surrounding the pattern and visible from the non-skin surface side.

1 is a plan view of an absorbent article according to a first embodiment.
FIG. 2 is a cross-sectional view of the absorbent article along line 2A-2A in FIG. 1.
Fig. 3 is a plan view of an absorbent article according to the second embodiment.

(1) Overview of the invention

An absorbent article according to one aspect includes an indicator pattern including an indicator that changes color due to urine, wherein the indicator pattern includes a high basis weight portion and a low basis weight portion, and the high basis weight portion includes the indicator in a first direction. It is formed at the edge of the pattern.

The indicator pattern changes color in response to urine. The high basis weight portion of the indicator material constituting the indicator pattern changes to a different color depending on the concentration of urine. For example, when the concentration of urine is high, the high basis weight portion changes to the same color as the low basis weight portion. Additionally, when the concentration of urine is small, the high basis weight portion changes to a color different from the color of the low basis weight portion. This is because when the concentration of urine is small, part of the high basis weight portion does not react with urine.

Therefore, when the concentration of urine is high, the high basis weight portion and the low basis weight portion change to almost the same color, so the indicator pattern changes into a substantially monochromatic pattern that is different from the original color. Additionally, when the concentration of urine is small, the high basis weight portion and the low basis weight portion change to different colors, so the indicator pattern changes to a pattern containing different colors. In other words, the indicator pattern may change to have a shade when the concentration of urine is small. As a result, the indicator pattern in the area where the urine concentration is low is easily recognized as a different pattern at first glance from the indicator pattern in the area where the urine concentration is high. Here, the concentration of urine is usually highest at the location where urine first adheres, and decreases as urine diffuses. In other words, the higher the urine concentration, the greater the urine volume, and the lower the urine concentration, the lower the urine volume. Therefore, in the indicator pattern of the above embodiment, it becomes easy to distinguish between an area containing a lot of urine, an area containing some urine, and an area not containing urine due to the difference in urine concentration. Therefore, the visibility of the indicator can be improved.

In addition, even if it does not contain urine, the design of the indicator pattern can be improved because shading appears to be applied to the high basis weight and low basis weight parts of the indicator pattern.

According to one preferred aspect, the high basis weight portion is formed only at the edge of the indicator pattern in the first direction.

As a result, the location where shading may occur in the indicator pattern is identified as a unidirectional edge. Therefore, it is easy for the user and assistant to determine where shading may occur in the indicator pattern, so it becomes easy for the user and assistant to determine whether or not the area contains some urine by looking at the discolored pattern. .

In addition, since the high basis weight portion is present at the edge of the indicator pattern, the high basis weight portion is visible like a shadow and can be recognized as a three-dimensional pattern. Therefore, the design of the indicator pattern can be improved.

According to one preferred aspect, the absorbent article has a front waist region, a crotch region, and a back waist region, and the first direction is a front-to-back direction connecting the front waist region and the back waist region. The high basis weight portion is formed at the rear edge of the indicator pattern.

In users who often lie facing up, such as infants, urine adhering to the crotch area tends to flow from the crotch area to the back. Therefore, if you do not notice that urine is spreading to the back, there are cases where urine leaks from the back. If a high basis weight portion is formed at the rear edge of the indicator pattern, a border of discoloration of the indicator pattern is likely to occur due to a change in urine volume from the crotch area to the back direction. In other words, in the back torso area where urine tends to diffuse, a high basis weight portion that can be used to distinguish the amount of urine is formed more on the dorsal side, so the user or assistant can accurately confirm the judgment of the amount of urine from a position closer to the dorsal side. there is.

According to a preferred embodiment, the high basis weight portion of the indicator pattern formed in the front waist region is formed on one of an edge on the side of the crotch region and an edge on a side opposite to the crotch region, and is formed on the back waist region. The high basis weight portion of the indicator pattern formed in the region is formed on the other side of an edge on the side of the crotch region and an edge on the side opposite to the crotch region.

When lying down facing up, urine adhering to the crotch area tends to flow from the crotch area to the back. Therefore, even when the amount of urination is large, it is difficult for urine to spread to the dorsal side. That is, in the front torso area where urine is difficult to spread, a high basis weight portion that can be used to determine the amount of urine is formed on the crotch side, so the user or assistant can measure the amount of urine on the crotch side, where judgment of the amount of urine is more necessary. You can check it more accurately.

On the other hand, when lying face down, urine adhering to the crotch area tends to flow from the crotch area to the dorsal side. Therefore, even when the amount of urination is large, it is difficult for urine to spread to the dorsal side. That is, in the back torso area where urine is difficult to spread, a high basis weight portion that can be used to determine the amount of urine is formed on the crotch side, so the user or assistant can measure the amount of urine on the crotch side, where judgment of the amount of urine is more necessary. You can check it more accurately.

According to a preferred embodiment, in the indicator pattern formed in the front waist region, the high basis weight portion is formed at an edge of the crotch region side, and in the indicator pattern formed in the back waist region, the high basis weight portion is , is formed at the edge opposite to the crotch area.

In users who often lie facing up, such as infants, urine adhering to the crotch area tends to flow from the crotch area to the back. Therefore, even when the amount of urination is large, it is difficult for urine to spread to the dorsal side. That is, in the front torso area where urine is difficult to spread, a high basis weight portion that can be used to determine the amount of urine is formed on the crotch side, so the user or assistant can measure the amount of urine on the crotch side, where judgment of the amount of urine is more necessary. You can check it more accurately.

According to one preferred aspect, the indicator pattern is formed in plural, and the high basis weight portion of the indicator pattern is formed at an edge on the same side of each indicator pattern.

As a result, the locations where shading can occur in a plurality of indicator patterns become the same, making it easier for users and assistants to understand where shading can occur in the indicator patterns. Therefore, it becomes easier for the user and assistant to determine whether the area contains some urine by looking at the discolored pattern.

Additionally, since the plurality of indicator patterns create a pattern with a unified atmosphere, the design of the absorbent article as a whole is improved.

According to a preferred embodiment, the indicator pattern includes an area surrounded by an area containing the indicator and does not include the indicator, and the high basis weight portion does not include the indicator in the first direction. It is formed at the edge of an area that is not covered.

Since the high basis weight portion exists at the edge of the area that does not include the indicator in the first direction, the high basis weight portion is visible as a shadow of the pattern, and can be recognized as a more three-dimensional pattern. Therefore, the design of the indicator pattern can be further improved.

According to a preferred aspect, the length of the high basis weight portion in the first direction is constant.

As a result, the high basis weight portion can be recognized more like a shadow and more like a three-dimensional pattern. Therefore, the design of the indicator pattern can be further improved.

According to a preferred embodiment, the indicator patterns are arranged in plural numbers, and the types or directions of the indicator patterns adjacent to each other are different from each other.

Since the types or directions of adjacent indicator patterns are different, it becomes easy for the user and assistant to determine which part of the indicator pattern the urine has reached.

Additionally, an assistant, such as a parent, can provide an opportunity for communication between mother and child by conveying information about which type or direction of the indicator pattern urine has reached to a user, such as a baby or toddler.

According to one preferred aspect, the indicator pattern has the function of an adhesive for adhering the sheets constituting the absorbent article.

As a result, the indicator pattern can serve both as an indicator for detecting urine and as an adhesive for joining sheets together.

According to a preferred embodiment, the absorbent article includes a backsheet, an absorbent core positioned on a skin surface side of the backsheet and absorbing liquid, and a core wrap surrounding the absorbent core, wherein the indicator pattern is located on the backside. The sheet and the core wrap are joined.

The indicator pattern is formed at a position where the back sheet and the core wrap are joined. Therefore, urine absorbed by the absorbent core easily comes into contact with the indicator pattern through the core wrap. Therefore, once the liquid is absorbed into the absorbent core, the indicator pattern is likely to react.

According to a preferred embodiment, the core wrap is joined at least in double overlapping portions, and the indicator pattern is bonded to a portion of the core wrap that is different from the overlapping portion.

Since the overlapping portion where the core wrap is doubled is joined, for example, with an adhesive, it is relatively difficult to pass urine compared to a portion different from the overlapping portion. In this embodiment, the indicator pattern is formed in a part different from the overlapping part, that is, in a region where urine easily passes. Thereby, once the liquid is absorbed into the absorbent core, the indicator pattern becomes more responsive.

According to one preferred aspect, the absorbent article includes an absorbent core that absorbs liquid, a back sheet on a non-skin surface side of the absorbent core, and an exterior sheet on a non-skin surface side of the back sheet, wherein the indicator pattern is: It is formed on a back sheet, and the exterior sheet has a hole at least in an area that overlaps the indicator pattern in the thickness direction.

The user and assistant visually see the indicator pattern formed on the back sheet through the exterior sheet from the non-skin side. Here, since the exterior sheet has holes at least in the area that overlaps the indicator pattern in the thickness direction, it becomes easier for the user and assistant to visually recognize the indicator pattern.

An absorbent article according to another aspect is formed in a front waist region, a back waist region, a crotch region between the front waist region and the back waist region, and at least the crotch region, and is discolored by urine. An indicator pattern including an indicator, and a back side pattern that is visible from the non-skin side and is different from the indicator pattern, wherein the indicator pattern formed at least in the crotch region includes a pattern formed by the indicator, and the pattern. It surrounds and includes a separating element that is visible from the non-dermal side.

The pattern formed by the urine-reactive indicator is surrounded by separating elements. Therefore, it becomes easy for the user and assistant to recognize the pattern surrounded by the separating elements as an indicator and to distinguish the pattern not surrounded by the separating elements as the back pattern. Therefore, it becomes easier for users and assistants to know which pattern to look at in order to determine whether urine has adhered to the absorbent article. Therefore, the visibility of the indicator can be improved.

According to a preferred embodiment, the separation element is formed by an indicator that changes color with urine.

The indicator pattern is formed so that the separation element along with the pattern formed by the indicator are discolored by urine. Therefore, it becomes easier for users and assistants to distinguish between the discolored indicator pattern and the back surface pattern. This makes it easier for users and assistants to know which pattern to look at in order to determine whether urine has adhered to the absorbent article.

According to a preferred embodiment, the shortest distance between the indicator pattern and the back surface pattern is shorter than the maximum length of the indicator pattern.

As the distance between the indicator pattern and the back surface pattern becomes relatively small, it becomes easier for the user or assistant to visually compare the indicator pattern and the back surface pattern. This makes it easier to recognize the difference between the indicator pattern and the back surface pattern at a glance.

According to one preferred aspect, the indicator pattern extends from the crotch area to at least one of the front waist area and the back waist area.

Since urine spreads concentrically from the point of attachment (crotch area), discoloration of the indicator pattern occurs from the crotch area toward the front waist area or the back waist area. In this embodiment, the indicator pattern extends from the crotch area to at least one of the front waist area and the back waist area. Therefore, a boundary line of discoloration of the indicator pattern is likely to occur in the crotch area, front torso area, or rear torso area, and this can help the user or assistant recognize that the discolored pattern is an indicator pattern. This makes it easier for the user or assistant to determine to what extent the urine adhering to the absorbent article has reached the front waist area and/or the back waist area.

According to one preferred embodiment, the length of the indicator pattern in the width direction of the absorbent article is 10 mm or more and 20 mm or less.

Users such as infants and toddlers often wear underwear that leaves the crotch area open, such as rompers. In this case, an assistant, such as a parent, opens the crotch area of the underwear to view the indicator pattern formed in the crotch area of the absorbent article, and determines whether urine is adhering to the absorbent article.

Here, in underwear such as rompers, a gap of about 30 mm may occur in the width direction in the crotch area. In this case, since the length of the indicator pattern in the width direction is 20 mm or less, the area around the indicator pattern can be sufficiently visible, so the user and assistant can recognize the indicator pattern by the difference from the surrounding area. It becomes easier to do.

Additionally, when the length of the indicator pattern in the width direction is 10 mm or more, the indicator pattern is prevented from becoming too small, making it easier for users and assistants to recognize the indicator pattern.

According to a preferred embodiment, the indicator patterns are arranged in plurality at intervals in the first direction, and the distance between the indicator patterns in the first direction is the length of the indicator patterns in the first direction. shorter than

Since a plurality of indicator patterns are arranged in the first direction at relatively short intervals, it is easy for the user and assistant to recognize the indicator patterns. Additionally, it becomes easier to determine which part of the indicator pattern the urine has reached.

According to one preferred aspect, the indicator patterns are arranged in plural numbers in the first direction at a pitch of 10 mm or more and less than 30 mm.

In underwear such as rompers, a gap of approximately 30 mm is created in the crotch area in the front-back direction (first direction). In this embodiment, since a plurality of indicator patterns are arranged at a pitch of 10 mm or more and less than 30 mm, at least one entire indicator pattern can be confirmed from a gap of about 30 mm.

According to a preferred aspect, the length of the indicator pattern in the first direction is 15 mm or more.

In underwear such as rompers, a gap of approximately 30 mm is created in the crotch area in the front-back direction (first direction). In this embodiment, since the indicator pattern is 15 mm or more, it is possible to secure the size of the indicator pattern for a gap of about 30 mm. This makes it easier for the user or assistant to recognize the indicator pattern from a gap of about 30 mm.

According to a preferred embodiment, the back surface pattern is formed in plural numbers, and the distance between the back surface patterns is longer than the maximum length of the back surface pattern.

Since a plurality of back patterns are formed at relatively large intervals, it is easy for users and assistants to recognize the difference between the indicator pattern and the back surface pattern.

According to a preferred embodiment, a plurality of the indicator patterns are arranged in the first direction, and the types or directions of the indicator patterns adjacent to each other are different from each other.

Since the types or directions of adjacent indicator patterns are different, it becomes easy for the user and assistant to determine which part of the indicator pattern the urine has reached.

Additionally, an assistant, such as a parent, can provide an opportunity for communication between mother and child by conveying information about which type or direction of the indicator pattern urine has reached to a user, such as a baby or toddler.

According to a preferred embodiment, the indicator pattern extends from the crotch area to both the front waist area and the back waist area, and the indicator patterns are arranged in a plurality in the front-to-back direction, and the front waist area The direction of the indicator pattern in the circumferential region is reversed from the direction of the indicator pattern in the rear torso circumferential region.

Since the direction of the indicator pattern is reversed in the front and back waist regions, the design of the absorbent article can be improved and the front and back can be more clearly distinguished.

According to one preferred embodiment, the separating element is formed in two layers. Since the indicator pattern stands out due to the double separation element being formed, the indicator pattern becomes more easily recognized by the user and assistant, and the user and assistant become more likely to recognize the difference between the indicator pattern and the back surface pattern.

According to one preferred aspect, the indicator pattern and the back surface pattern are formed by patterns having a relationship.

Since the indicator pattern and the back surface pattern are formed by patterns that are related to each other, the design of the absorbent article can be improved. Thereby, the user and/or his/her purchasing motivation can be improved.

According to a preferred embodiment, the color of the indicator pattern discolored by urine is formed of a color opposite to the color of the back surface pattern.

This makes it easier for users and assistants to recognize the difference between the indicator pattern and the back surface pattern.

According to one preferred aspect, the separation element has a shape that surrounds the outline of the pattern formed by the indicator with a thin line.

As a result, the indicator pattern takes on a more characteristic form, making it more noticeable to users and assistants. Therefore, it is easier for users and assistants to recognize the difference between the indicator pattern and the back surface pattern.

(2) First embodiment

Next, with reference to the drawings, an absorbent article according to the first embodiment will be described. In this embodiment, the absorbent article is a tape-type disposable diaper. Instead of this, the absorbent article may be a pants-type disposable diaper. On the other hand, disposable diapers may be diapers for infants or toddlers or may be diapers for adults.

In the description of the drawings below, identical or similar parts are given identical or similar symbols. However, it should be noted that the drawings are schematic and the ratios of each dimension are different from those in reality. Therefore, specific dimensions, etc. must be judged in consideration of the description below. Additionally, parts with different dimensional relationships or ratios may be included between drawings.

1 is a plan view of an absorbent article according to a first embodiment. More specifically, Figure 1 shows an absorbent article that has been stretched until wrinkles are substantially eliminated, as viewed from the non-skin side. FIG. 2 is a cross-sectional view of the absorbent article along line 2A-2A in FIG. 1. Here, the non-skin surface or non-skin surface side means the surface or side facing opposite to the wearer's skin when the absorbent article is worn. Meanwhile, the skin surface or skin surface side refers to the surface or side facing the wearer's skin when the absorbent article is worn.

The absorbent article 10 has a front-back direction (L), a width direction (W), and a thickness direction. The anteroposterior direction L is a direction connecting the dorsal side and the back side of the absorbent article 10 in the wearing state. The width direction W is a direction orthogonal to the front-back direction L in the planar view of the absorbent article 10. The thickness direction is a direction perpendicular to both the front-back direction (L) and the width direction (W).

The absorbent article 10 has a front waist area S1, a crotch area S2, and a back waist area S3. The front torso area S1 is an area facing the front torso of the wearer when the absorbent article is used. The back torso area S3 is an area facing the wearer's back torso when the absorbent article is used. The crotch area S2 is an area located at the crotch of the wearer when using the absorbent article, and is located between the front waist area S1 and the back waist area S3.

The absorbent article 10 may have a top sheet 50, a back sheet 62, and an absorber 40. The top sheet 50 is located closer to the skin surface than the absorber 40. The top sheet 50 covers the skin surface side of the absorber 40. The top sheet 50 may be composed of a liquid-permeable sheet.

The absorbent article 10 may have side sheets 52 on both sides of the center of the absorbent article 10 in the width direction W. The side sheet 52 may be located closer to the skin surface than the top sheet 50. In this embodiment, the side sheet 52 is installed from near the outside of the absorbent article 10 in the width direction W to near the outside of the absorber 40 in the width direction W. there is. More specifically, a part of the side sheet 52 may overlap the outer portion of the absorber 40 in the width direction W in the thickness direction.

An elastic member 30 capable of stretching in the front-back direction may be provided near the inner side of the side sheet 52 in the width direction W. More specifically, the elastic member 30 is joined to the side sheet 52 in an extended state. As a result, the side sheet 52 is contracted in the front-back direction L in its natural state. By contracting the side sheet 52 in the front-back direction L, a cuff (gather) is formed in which the inner portion of the side sheet 52 in the width direction stands up toward the skin.

The backsheet 62 is located on the non-skin surface side of the absorber 40. The back sheet 62 may be made of a liquid-impermeable sheet. The back sheet 62 prevents leakage of liquid from the absorber 40 to the non-skin side.

The absorbent article 10 may have an exterior sheet 60 on the non-skin side of the backsheet 62. The exterior sheet 60 may be made of a sheet with holes (openings) 61 to improve ventilation. A plurality of holes 61 may be formed in the exterior sheet 60 .

The absorber 40 may have an absorbent core 40a and a core wrap 40b. The absorbent core 40a is made of a material that can absorb liquid, such as urine. The absorbent core 40a may be made of, for example, pulp, superabsorbent polymer (SAP), or a combination thereof.

The core wrap 40b may surround the absorbent core 40a. The core wrap 40b may be made of a sheet such as tissue, for example.

In this embodiment, the core wrap 40b is folded so that in the unfolded state, a pair of ends located at both ends of the core wrap 40b overlap each other on the skin surface side of the absorbent core 40a (see Figure 2). (see area (O)). The core wrap 40b may be joined at least in double overlapping portions O.

The absorbent article 10 includes an indicator pattern 80 including an indicator that changes color due to urine, and a back surface pattern 70 that is visible from the non-skin surface side and is different from the indicator pattern 80. The indicator formed on the absorbent article changes color in response to urine. In these indicators, the boundary between the part that is discolored by urine and the part that is not discolored tends to be ambiguous. That is, the color of the indicator changes continuously over a relatively wide area from a location containing a lot of urine to a location containing no urine. Therefore, it may be difficult for users such as infants or assistants such as parents to distinguish between an area containing a lot of urine, an area containing some urine, and an area containing no urine based on the color of the indicator. . Accordingly, the absorbent article of the first embodiment is configured to include an indicator that can easily distinguish between an area containing a lot of urine, an area containing some urine, and an area containing no urine.

The back surface pattern 70 may be formed in plural numbers. The back pattern 70 may be formed on any sheet constituting the absorbent article 10 as long as it is visible from the non-skin surface side. For example, the back pattern 70 may be formed on the back sheet 62. The back pattern 70 may be colored, for example. Meanwhile, please note that the back surface pattern 70 is not comprised of an indicator that reacts with urine, as will be described later.

The indicator pattern 80 is formed at least in the crotch area S2. The indicator constituting the indicator pattern 80 can indicate the wetness of the absorbent article 10 by being discolored by urine. The indicator pattern 80 may be formed on the back sheet 62. Preferably, the indicator pattern 80 may be formed on the side of the backsheet 62 that faces the absorber 40.

The indicator pattern 80 includes a high basis weight portion 81 and a low basis weight portion 82. The high basis weight portion 81 is a portion where the basis weight of the material constituting the indicator is higher than that of the low basis weight portion 82. The high basis weight portion 81 is formed at the edge of the indicator pattern 80 in one direction, for example, the front-back direction (L). Preferably, the high basis weight portion 81 is formed only at the edges of the indicator pattern 80 in the first direction.

The indicator pattern 80 changes color in response to urine. The high basis weight portion 81, which has a high basis weight of the indicator material constituting the indicator pattern 80, changes to a different color depending on the concentration of urine. For example, when the concentration of urine is high, the high basis weight portion 81 changes to the same color as the low basis weight portion 82. Additionally, when the concentration of urine is low, the high basis weight portion 81 changes to a color different from the color of the low basis weight portion 82. This is because when the concentration of urine is low, part of the high basis weight portion 81 does not react with urine.

When the concentration of urine is high, the high basis weight portion 81 and the low basis weight portion 82 change to almost the same color, so the indicator pattern 80 changes to a substantially monochromatic pattern different from the original color. . Additionally, when the concentration of urine is low, the high basis weight portion 81 and the low basis weight portion 82 change to different colors, so the indicator pattern 80 changes to a pattern containing different colors. In other words, the indicator pattern 80 may change to have a shade when the concentration of urine is low. As a result, the indicator pattern 80 in the area where the urine concentration is low is easily recognized as a different pattern at first glance from the indicator pattern 80 in the area where the urine concentration is high. Here, the concentration of urine is usually highest at the location where urine first adheres, and decreases as urine diffuses. In other words, the higher the urine concentration, the greater the urine volume, and the lower the urine concentration, the lower the urine volume. Therefore, it becomes easy for the user or assistant to distinguish between an area containing a lot of urine, an area containing some urine, and an area containing no urine.

In addition, even if it does not contain urine, shading appears to be applied to the high basis weight portion 81 and the low basis weight portion 82 of the indicator pattern 80, thereby improving the design of the indicator pattern 80. It may be possible.

When the high basis weight portion 81 is formed only at the edge of the indicator pattern 80, the location where shading may occur in the indicator pattern 80 is specified as an edge in one direction. Therefore, since it is easy for the user and assistant to determine where shading may occur in the indicator pattern 80, the user and assistant can detect some amount of urine, that is, urine containing low concentration, by looking at the discolored pattern. It becomes easier to determine whether it is an area or not. Additionally, since the high basis weight portion 81 is present at the edge of the indicator pattern 80, the high basis weight portion 81 is visible like a shadow and can be recognized as a three-dimensional figure. Therefore, the design of the indicator pattern 80 can be improved.

The indicator patterns 80 may be arranged in plural numbers at intervals in one direction. In this embodiment, the indicator patterns 80 are arranged along the front-back direction L. The distance L5 between adjacent indicator patterns 80 is preferably shorter than the length L4 of the indicator patterns 80 in the direction in which the indicator patterns 80 are arranged. Since the indicator patterns 80 are arranged in one direction at relatively short intervals, it becomes easy to determine which area of the absorbent article 10 the urine is reaching. The indicator pattern 80 preferably extends from the crotch area S2 to at least one of the front waist area S1 and the back waist area S3. More preferably, the indicator pattern 80 extends from the crotch area S2 to both the front waist area S1 and the back waist area S3.

The high basis weight portion 81 of the indicator pattern 80 formed in the front waist area S1 is formed on one of the edges on the crotch area side and the edge opposite to the crotch area, and is formed on the back waist area (S1). The high basis weight portion 81 of the indicator pattern 80 formed in S3) is formed on the other side of the edge on the crotch region side and the edge on the opposite side from the crotch region. In the example shown in FIG. 1, the high basis weight portion 81 of the indicator pattern 80 formed in the front waist area S1 is formed at the edge of the crotch area side, and is formed in the back waist area S3. The high basis weight portion 81 of the indicator pattern 80 is formed at the edge opposite to the crotch region.

When lying down facing up, urine adhering to the crotch area S2 tends to flow from the crotch area S2 to the dorsal side. Therefore, even when the amount of urination is large, it is difficult for urine to spread to the dorsal side. That is, in the front torso area S1 where urine is difficult to spread, the high basis weight portion 81 that can be used to distinguish the amount of urine is formed more on the crotch side, so the user or assistant can better judge the amount of urine. You can check the amount of urine more accurately from the crotch side where it is needed.

On the other hand, when lying face down, urine adhering to the crotch area S2 tends to flow from the crotch area S2 to the dorsal side. Therefore, even when the amount of urination is large, it is difficult for urine to spread to the dorsal side. That is, in the back torso area S3 where urine is difficult to spread, the high basis weight portion 81 that can be used to distinguish the amount of urine is formed more on the crotch side, so the user or assistant can better judge the amount of urine. You can check the amount of urine more accurately from the crotch side where it is needed.

In users who often lie facing up, such as infants, the high basis weight portion 81 of the indicator pattern 80 formed on the front torso area S1 is positioned on the crotch area side, as shown in the example shown in FIG. It is more preferable that the high basis weight portion 81 of the indicator pattern 80 formed on the edge and in the rear waist region S3 is formed on the edge opposite to the crotch region.

In a plurality of indicator patterns 80, the high basis weight portion 81 of the indicator patterns 80 is preferably formed at an edge on the same side of each indicator pattern 80. Since the shades of the plurality of indicator patterns 80 appear to be generated on the same side, the plurality of indicator patterns 80 become a pattern with a unified atmosphere. Accordingly, the design of the absorbent article as a whole is improved.

In addition, since the high basis weight portion 81 is located on the same side of the indicator pattern 80, the high basis weight portion 81 is arranged like a memory, for example, in the front-back direction (L), as shown in FIG. 1. Accordingly, the user and the assistant can more easily determine to what position in the absorbent article 10 liquid such as urine has spread.

The high basis weight portion 81 is preferably formed at the rear edge of the indicator pattern 80. In users who often lie facing up, such as infants, urine adhering to the crotch area S2 tends to flow from the crotch area S2 to the back side. Therefore, if you do not notice that urine is spreading to the back, there are cases where urine leaks from the back. If the high basis weight portion 81 is formed at the rear edge of the indicator pattern 80, a border of discoloration of the indicator pattern 80 is likely to occur due to a change in urine volume from the crotch area S2 to the back direction. . That is, in the rear torso area S3 where urine easily spreads, the high basis weight portion 81 that can be used to distinguish the amount of urine is formed more on the dorsal side, so the user or assistant can use it in a position closer to the dorsal side. You can accurately determine the amount of urine.

It is preferable that the length of the high basis weight portion 81 in one direction, for example, the length in the front-back direction (L), is constant. As a result, the high basis weight portion 81 can be recognized more like a shadow and more like a three-dimensional pattern. Therefore, the design of the indicator pattern 80 can be further improved.

Preferably, a plurality of indicator patterns 80 are arranged in a first direction, for example, the front-back direction (L), and the types or directions of the indicator patterns 80 adjacent to each other are different from each other. In the example shown in FIG. 1, the types of indicator patterns 80 adjacent to each other imitate flowers and bees. Instead of this, the indicator patterns 80 adjacent to each other may be the same and only their directions may be different. In this way, when the types or directions of the indicator patterns 80 adjacent to each other are different, it becomes easy for the user and the assistant to determine which part of the indicator pattern 80 the urine has reached. Additionally, an assistant, such as a parent, can serve as an opportunity for communication between mother and child by conveying information about which type or direction of urine has reached the indicator pattern 80 to a user, such as a baby or toddler.

The indicator pattern 80 may include an area 85 that is surrounded by the high basis weight portion 81 and the low basis weight portion 82, which is an area containing the indicator, and does not contain the indicator. In this case, the high basis weight portion 81 is preferably formed at the edge of the area 85 that does not include the indicator in one direction, for example, the front-back direction (L). In this case, since the high basis weight portion 81 exists at the edge of the area 85 that does not include the indicator in one direction, for example, the front-back direction (L), the high basis weight portion 81 forms the indicator pattern 80. It is recognized as a shade of , and can be perceived as a more three-dimensional pattern. Therefore, the design of the indicator pattern 80 can be further improved.

It is preferable that the indicator pattern 80 and the back surface pattern 70 are formed by related patterns. For example, in the example shown in FIG. 1, the indicator pattern 80 is composed of a flower and bee pattern, and the back surface pattern 70 is composed of a flower and honey pattern. As a result, a design with a sense of unity as a whole is obtained.

In this way, since the indicator pattern 80 and the back surface pattern 70 are formed by patterns that are related to each other, the design of the absorbent article 10 can be improved. Thereby, the user and/or his/her purchasing motivation can be improved.

The indicator pattern 80 preferably has the function of an adhesive for adhering the sheets constituting the absorbent article 10. As a result, the indicator pattern 80 can serve both as an indicator for detecting urine and as an adhesive for joining sheets together.

Preferably, the indicator pattern 80 joins the back sheet 62 and the core wrap 40b. In this case, urine absorbed by the absorbent core 40a easily reaches the indicator pattern 80 through the core wrap 40b. Therefore, once the liquid is absorbed into the absorbent core 40a, the indicator pattern 80 is likely to react.

More preferably, the indicator pattern 80 is bonded to a portion different from the overlapping portion O of the core wrap 40b. Since the overlapping portion O in which the core wrap 40b is doubled is joined, for example, with an adhesive, it is relatively difficult to pass urine compared to portions different from the overlapping portion O. Since the indicator pattern 80 is formed in a part different from the overlapping portion O, that is, in a region where urine easily passes, the liquid absorbed by the absorbent core 40a becomes easy to contact the indicator pattern 80. Therefore, the indicator pattern 80 becomes more responsive.

The hole 61 formed in the above-described exterior sheet 60 is preferably formed at least in an area that overlaps the indicator pattern 80 in the thickness direction. The user and assistant visually see the indicator pattern 80 formed on the back sheet 62 through the exterior sheet 60 from the non-skin surface side. When the exterior sheet 60 has holes 61 at least in an area that overlaps the indicator pattern 80 in the thickness direction, it becomes easier for the user and assistant to see the indicator pattern 80.

Next, the absorbent article 10X according to the second embodiment will be described. Meanwhile, in the following description, the same components as those in the first embodiment are given the same reference numerals and descriptions are omitted. The absorbent article 10X according to the second embodiment has a different indicator configuration from the first embodiment. Figure 3 is a top view of an absorbent article 10X according to one embodiment. More specifically, Figure 3 shows an absorbent article that has been stretched until wrinkles are substantially eliminated, as viewed from the non-skin side.

The absorbent article 10X according to the second embodiment has an indicator pattern 80X. Conventional absorbent articles include character patterns that do not react to urine and indicator patterns that react to urine. In this case, it may be difficult for users such as infants and toddlers and assistants such as parents to distinguish the difference between the character pattern and the indicator pattern. Therefore, it may be difficult for users and assistants to know which pattern to look at in order to determine whether urine has adhered to the absorbent article. Accordingly, the absorbent article of the second embodiment is configured to make it easy to recognize the difference between a pattern that does not react to urine and an indicator pattern that reacts to urine.

The indicator pattern 80X is formed at least in the crotch area S2. The indicator constituting the indicator pattern 80X may indicate the wetness of the absorbent article 10X by being discolored by urine, for example. The indicator pattern 80X may be formed on the back sheet 62. Preferably, the indicator pattern 80X may be formed on the side of the backsheet 62 facing toward the absorber 40.

The indicator pattern 80X formed at least in the crotch area S2 includes a pattern 84 formed by the indicator and a separation element 88 surrounding the pattern 84 and visible from the non-skin surface side. The separation element 88 is preferably formed by an indicator that changes color with urine.

The pattern 84 formed by the urine-reactive indicator is surrounded by a separating element 88. Therefore, it becomes easy for the user and assistant to recognize the pattern 84 surrounded by the separating elements 88 as an indicator and to distinguish the pattern not surrounded by the separating elements 88 as the back pattern 70. Therefore, it becomes easier for users and assistants to know which pattern to look at in order to determine whether urine has adhered to the absorbent article.

Additionally, when the separation element 88 is also formed by an indicator, the separation element 88 along with the pattern 84 formed by the indicator is discolored by urine, so the user and assistant must use the indicator pattern 80X. It becomes easier to recognize it as a characteristic. Therefore, it becomes easier for users and assistants to distinguish between the discolored indicator pattern 80X and the back pattern 70. This makes it easier for the user and assistant to know which pattern to look at in order to determine whether urine has adhered to the absorbent article 10X.

The separation element 88 may have a shape that wraps around the outline of the pattern 84 formed by the indicator. In the example shown in Figure 1, the separation element 88 has a rectangular shape surrounding the pattern 84 formed by the indicator. As an example, the separation element 88 may be formed to surround the pattern 84 at a distance of less than 6 mm from the pattern 84 formed by the indicator.

If the separation element 88 has a shape that encircles the outline of the pattern 84 formed by the indicator, the indicator pattern 80X has a more characteristic shape and is therefore more likely to be noticed by users and assistants. Therefore, it is easier for users and assistants to recognize the difference between the indicator pattern (80X) and the back pattern (70).

In Figure 3, a separate element 88 surrounds the pattern 84 formed by the indicator. Instead of this, the separation element 88 may be formed in two layers. If the separation element 88 is formed in two layers, the indicator pattern 80X becomes more conspicuous, so that the indicator pattern is more easily recognized by the user and assistant. This makes it easier for users and assistants to recognize the difference between the indicator pattern 80X and the back surface pattern 70.

A plurality of indicator patterns 80X may be arranged at intervals in one direction. In this embodiment, the indicator patterns 80X are arranged along the front-back direction L. The distance (L5) between adjacent indicator patterns (80X) is preferably shorter than the length (L4) of the indicator patterns (80X) in the direction in which the indicator patterns (80X) are arranged. As a result, since the plurality of indicator patterns 80X are arranged in one direction at relatively short intervals, it is easy for the user and assistant to distinguish the indicator pattern 80X from the back surface pattern 70. Additionally, since the indicator patterns 80X are arranged in one direction at relatively short intervals, it becomes easy to determine which area of the absorbent article 10X the urine is reaching.

It is preferable that the indicator patterns 80X are arranged in one direction, for example, in the front-back direction (L), at a pitch of 10 mm or more and less than 30 mm. In underwear such as a romper, when the button at the position opposite to the crotch area S2 is released, a gap of about 30 mm is created in the front-back direction L in the crotch area S2. If a plurality of indicator patterns 80X are arranged at a pitch of 10 mm or more and less than 30 mm, at least one entire indicator pattern 80X can be confirmed from a gap of about 30 mm (gap of the romper). Thereby, the user and the assistant can easily determine whether urine has adhered to the crotch area S2 of the absorbent article from the gap in the romper.

The indicator pattern 80X preferably extends from the crotch area S2 to at least one of the front waist area S1 and the back waist area S3. More preferably, the indicator pattern 80X extends from the crotch area S2 to both the front waist area S1 and the back waist area S3.

Since urine spreads concentrically from the point of attachment (crotch area), the discoloration of the indicator pattern (80X) occurs from the crotch area (S2) to the front torso area (S1) or back torso area (S3). occurs towards. If the indicator pattern 80 In S3), a border of discoloration in the indicator pattern (80X) is likely to occur. This can help the user or assistant recognize that the discolored pattern is an indicator pattern. Accordingly, it becomes easy for the user or assistant to determine to what extent the urine adhering to the absorbent article 10X has reached the front waist area S1 and/or the back waist area S3.

The length of the indicator pattern 80X in the width direction (W) of the absorbent article 10X is preferably 10 mm or more and 20 mm or less. Users such as infants and toddlers often wear underwear that leaves the crotch area open, such as rompers. In this case, an assistant, such as a parent, opens the crotch area of the underwear to view the indicator pattern formed in the crotch area of the absorbent article, and determines whether urine has adhered. Here, in underwear such as rompers, a gap of about 30 mm may occur in the width direction in the crotch area. In this case, since the length of the indicator pattern (80X) in the width direction (W) is 20 mm or less, the area around the indicator pattern (80X) can be sufficiently visible, so the user and assistant can It becomes easier to recognize the indicator pattern (80X) due to the difference.

In addition, by setting the length of the indicator pattern (80X) in the width direction (W) to 10 mm or more, the indicator pattern (80X) is prevented from becoming too small, and the user and assistant can easily recognize the indicator pattern (80X) .

In the direction in which the indicator pattern 80X is arranged, for example, the front-back direction (L), the length of the indicator pattern 80X is preferably 15 mm or more. In underwear such as rompers, a gap of about 30 mm may occur in the crotch area, as described above. Therefore, if the length of the indicator pattern (80X) is 15 mm or more, it is possible to secure the size of the indicator pattern (80X) for a gap of about 30 mm. This makes it easier for the user or assistant to recognize the indicator pattern 80X from a gap of about 30 mm.

In order to make it easier for the user or assistant to recognize the indicator pattern, it is desirable to make one, preferably two, indicator patterns visible from a gap of about 30 mm. In addition, so that the indicator pattern (80X) does not become too small, it is more preferable that the indicator pattern visible from a gap of about 30 mm is less than 3. Considering these conditions, the length of the indicator patterns 80X in one direction may be in the range of 9 to 29 mm, and the distance between the indicator patterns 80X may be in the range of 1 to 21 mm.

The shortest distance (L1) between the indicator pattern (80X) and the back surface pattern (70) is preferably shorter than the maximum length (L2) of the indicator pattern (80X). More preferably, in the direction perpendicular to the direction in which the indicator pattern 80X is arranged, for example, the width direction W, the shortest distance L1 between the indicator pattern 80X and the back surface pattern 70 is the indicator pattern 80X. It is shorter than the length (L3) of the pattern (80X). This makes it easier for the user or assistant to visually recognize the indicator pattern 80X and the back surface pattern 70. Therefore, it becomes easy to recognize the difference between the indicator pattern (80X) and the back surface pattern (70) at a glance.

The back pattern 70 is formed in plural, and the distance between the back surface patterns 70 is preferably longer than the maximum length of the back surface pattern 70. If a plurality of back patterns 70 are formed at relatively large intervals, it is easy for users and assistants to recognize the difference between the indicator pattern 80X and the back pattern 70. In particular, if the distance (L5) between the indicator patterns (80X) is shorter than the length (L4) of the indicator patterns (80X), the difference between the indicator patterns (80X) and the back surface pattern 70 becomes significant.

Preferably, a plurality of the indicator patterns 80X are arranged in the first direction, for example, the front-back direction (L), and the type or direction of the indicator patterns 80X adjacent to each other are different from each other. In the example shown in FIG. 1, the types of indicator patterns (80X) adjacent to each other imitate flowers and bees. Instead of this, the indicator patterns 80X adjacent to each other may be the same and only their directions may be different. In this way, when the types or directions of the adjacent indicator patterns 80X are different, it becomes easy for the user and the assistant to determine which part of the indicator pattern 80X the urine has reached. Additionally, an assistant such as a parent can provide an opportunity for communication between mother and child by conveying information about which type or direction of urine has reached the indicator pattern (80X) to a user such as a baby or toddler.

Preferably, the direction of the indicator pattern 80X in the front waist area S1 may be reversed from the direction of the indicator pattern 80X in the back waist area S3. If the direction of the indicator pattern (80X) is reversed in the front waist area (S1) and the back waist area (S3), the design of the absorbent article (10 .

It is preferable that the indicator pattern 80X and the back surface pattern 70 are formed by related patterns. For example, in the example shown in FIG. 1, the indicator pattern 80X is composed of a flower and bee pattern, and the back surface pattern 70 is composed of a flower pattern. As a result, a design with a sense of unity as a whole is obtained.

In this way, since the indicator pattern 80X and the back surface pattern 70 are formed by patterns that are related to each other, the design of the absorbent article 10X can be improved. Thereby, the user and/or his/her purchase motivation can be improved.

The color of the indicator pattern 80X discolored by urine is preferably formed of a color opposite to the color of the back surface pattern 70. Here, the opposite color of a certain color means the complementary color of a certain color (a color located on the opposite side of the color wheel) and the colors one and two next to the complementary color in the color wheel based on the Munsell color system, which divides colors into 20 equal parts. do.

If the color of the indicator pattern (80 It gets easier.

Additionally, in a variant, the separating element 88 is preferably formed by an indicator that changes color with urine, as described above. However, the separation element 88 does not necessarily have to be formed by an indicator. For example, the separation element 88 may be formed of an ink layer (colored) or may be formed of a region (ground color) sandwiched between ink layers (colored).

Although the present invention has been described in detail using the above-described embodiments, it is clear to those skilled in the art that the present invention is not limited to the embodiments described in this specification. The present invention can be implemented in modifications and variations without departing from the spirit and scope of the invention as defined by the claims. Accordingly, the description in this specification is for the purpose of illustrative explanation and does not have any restrictive meaning with respect to the present invention.

Meanwhile, all contents of Japanese Patent Application No. 2018-096418 and Japanese Patent Application No. 2018-096409 filed on May 18, 2018 are incorporated herein by reference.

According to this aspect, an absorbent article including an indicator that can easily distinguish between an area containing a lot of urine, an area containing some urine, and an area containing no urine can be provided.

10: Absorbent article 40: Absorber
50: surface sheet 60: exterior sheet
62: Back sheet 70: Back pattern
80, 80X: Indicator pattern 81: High basis weight section
82: Low basis weight part 84: Pattern formed by indicator
88: Separating element S1: Front torso area
S2: Crotch area S3: Back torso area

Claims (28)

front torso area,
crotch area,
a back torso circumference area,
Contains an indicator pattern including an indicator that changes color due to urine,
The indicator pattern is formed in plural,
Each of the indicator patterns includes a high basis weight portion and a low basis weight portion,
The high basis weight portion of the indicator pattern formed in the front waist region is formed at the front edge of the indicator pattern,
The absorbent article wherein the high basis weight portion of the indicator pattern formed on the back waist region is formed on an edge of the crotch region. front torso area,
crotch area,
a back torso circumference area,
Contains an indicator pattern including an indicator that changes color due to urine,
The indicator pattern is formed in plural,
Each of the indicator patterns includes a high basis weight portion and a low basis weight portion,
The high basis weight portion of the indicator pattern formed on the front waist region is formed on an edge of the crotch region,
The absorbent article wherein the high basis weight portion of the indicator pattern formed on the rear waist region is formed on a rear edge. The absorbent article according to claim 1 or 2, wherein the high basis weight portion is formed only at the edge of the indicator pattern in the front-back direction. According to claim 1 or 2,
The indicator pattern is formed in plural,
The absorbent article wherein the high basis weight portion of the indicator pattern is formed on an edge on the same side of each of the indicator patterns. According to claim 1 or 2,
The indicator pattern is an area surrounded by an area containing the indicator and includes an area not containing the indicator,
An absorbent article in which the high basis weight portion is formed at an edge of an area that does not include the indicator in the front-back direction. The absorbent article according to claim 1 or 2, wherein the length of the high basis weight portion in the front-back direction is constant. According to claim 1 or 2,
The indicator patterns are arranged in plural numbers,
An absorbent article in which the types or directions of the indicator patterns adjacent to each other are different from each other. The absorbent article according to claim 1 or 2, wherein the indicator pattern has the function of an adhesive to adhere the sheets constituting the absorbent article. According to clause 8,
Back sheet,
an absorbent core located closer to the skin than the backsheet and absorbing liquid;
comprising a core wrap surrounding the absorbent core,
The indicator pattern is an absorbent article that joins the back sheet and the core wrap. According to clause 9,
The core wrap is joined at least in double overlapping portions,
An absorbent article in which the indicator pattern is bonded to a portion of the core wrap that is different from the overlapping portion. According to claim 1 or 2,
an absorbent core that absorbs liquid,
A back sheet on a non-skin surface side of the absorbent core,
An exterior sheet on a non-skin surface side of the back sheet,
The indicator pattern is formed on the back sheet,
The absorbent article wherein the exterior sheet has holes at least in an area that overlaps the indicator pattern in the thickness direction. front torso area,
a back torso circumference area,
a crotch area between the front torso area and the back torso area;
an indicator pattern formed at least in the crotch area and including an indicator that changes color due to urine;
It is visible from the non-skin side and includes a backside pattern that is different from the indicator pattern,
The indicator pattern formed at least in the crotch region includes a pattern formed by the indicator and a separation element surrounding the pattern and visible from the non-skin surface side,
An absorbent article wherein the separating element is formed by an indicator that changes color with urine. front torso area,
a back torso circumference area,
a crotch area between the front torso area and the back torso area;
an indicator pattern formed at least in the crotch area and including an indicator that changes color due to urine;
It is visible from the non-skin side and includes a backside pattern that is different from the indicator pattern,
The indicator pattern formed at least in the crotch region includes a pattern formed by the indicator and a separation element surrounding the pattern and visible from the non-skin surface side,
The indicator pattern extends from the crotch area to both the front waist area and the back waist area,
The indicator patterns are arranged in plural numbers in the front-back direction,
The absorbent article wherein the direction of the indicator pattern in the front waist region is reversed from the direction of the indicator pattern in the back waist region. The absorbent article according to claim 12 or 13, wherein the shortest distance between the indicator pattern and the back surface pattern is shorter than the maximum length of the indicator pattern. The absorbent article according to claim 12 or 13, wherein the indicator pattern extends from the crotch area to at least one of the front waist area and the back waist area. The absorbent article according to claim 12 or 13, wherein the length of the indicator pattern in the width direction of the absorbent article is 10 mm or more and 20 mm or less. According to claim 12 or 13,
The indicator patterns are arranged in plurality at intervals in the first direction,
An absorbent article wherein the distance between the indicator patterns in the first direction is shorter than the length of the indicator patterns in the first direction. The absorbent article according to claim 12 or 13, wherein the indicator patterns are arranged in plural numbers in the first direction at a pitch of 10 mm or more and less than 30 mm. The method of claim 12 or 13, wherein a plurality of indicator patterns are arranged at intervals in the first direction,
An absorbent article wherein the length of the indicator pattern in the first direction is 15 mm or more. According to claim 12 or 13,
The back surface pattern is formed in plural,
An absorbent article in which the distance between the backing patterns is longer than the maximum length of the backing patterns. According to claim 12 or 13,
The indicator patterns are arranged in plural numbers in a first direction,
An absorbent article in which the types or directions of the indicator patterns adjacent to each other are different from each other. 14. The absorbent article according to claim 12 or 13, wherein the separating element is formed in two layers. The absorbent article according to claim 12 or 13, wherein the indicator pattern and the back surface pattern are formed by related patterns. The absorbent article according to claim 12 or 13, wherein the color of the indicator pattern discolored by urine is a color opposite to the color of the back surface pattern. The absorbent article according to claim 12 or 13, wherein the separating element has a shape that surrounds the outline of the pattern formed by the indicator. delete delete delete