WO2015198664A1

WO2015198664A1 - Pull-on wearable article

Info

Publication number: WO2015198664A1
Application number: PCT/JP2015/058464
Authority: WO
Inventors: 潤深澤; 栗田　典之
Original assignee: ユニ・チャーム株式会社
Priority date: 2014-06-27
Filing date: 2015-03-20
Publication date: 2015-12-30
Also published as: JP2016010519A; JP6246082B2

Abstract

An outer-layer sheet (30) formed from a nonwoven fabric of colored fibers is positioned on an outer face of a front waist region (11) and a crotch region (13), a plurality of lines of waist elastic bodies (41, 42) extending in a transverse direction (X) and attached in a stretched state to the outer-layer sheet (30) so as to be able to contract are arranged in the front waist region (11), and first colored regions (61-64) are demarcated in which a gather is formed in the outer-layer sheet (30) and the visually apparent density of color therein is increased by contraction of the waist elastic bodies (41, 42). Indicators (60) are positioned in a second colored region (65) between an absorbent body (14) and the outer-layer sheet (30) in the crotch region (13), the elastic bodies extending in the transverse direction (X) not being arranged therein, and the visually apparent density of color of the second colored region (65) being lower than that of the first colored regions (61-64). A change in color of the indicators (60) after contact thereof with urine can be recognized from outside the outer-layer sheet (30).

Description

Pull-on wearing items

The present invention relates to a pull-on wearing article.

Conventionally, pull-on (pants-type) wearing articles using colored sheets are known. For example, in Patent Document 1, a liquid-permeable inner layer sheet, a liquid-impermeable outer layer sheet, an absorber interposed between the inner and outer layer sheets, and an absorber and an outer layer sheet are disposed, Disposable diapers are disclosed that include a colored (designed) leakproof film having an indicator function for identifying the presence or absence of urination. Further, Patent Document 2 includes a liquid-permeable inner layer sheet, a liquid-impermeable outer layer sheet, and an absorbent body interposed between the inner and outer layer sheets, and is a disposable type in which the outer layer sheet is colored. Diapers are disclosed.

JP 2003-199791 A (P2003-199791) JP 2012-170577 A (P2012-170577)

In the diaper disclosed in Patent Document 1, the presence or absence of urination can be visually recognized from the outside by arranging a leak-proof film having an indicator function in the region where the absorber exists, and the design and prevention of the indicator can be improved. The design is improved by the color of the leakage film itself. Moreover, in the wearing article disclosed by patent document 2, design property is provided by coloring to a diaper by coloring the outer layer sheet | seat, and design property improves.

However, in the diaper disclosed in Patent Document 1, only the leak-proof film disposed in the region where the absorber is present has a design property, and therefore the design property of the diaper cannot be improved. On the other hand, when a color is applied to the outer surface of the diaper using a sheet colored on the outer layer sheet like the diaper disclosed in Patent Document 2, it is possible to visually recognize changes in the color and design of the indicator during urination. It becomes difficult.

Accordingly, an object of the present invention is to provide a pull-on wearing article that is an improvement of the prior art and improves the designability by imparting color to the outer surface of the diaper and does not reduce the visibility of the indicator. .

The present invention has a longitudinal direction and a lateral direction, a front waist region, a rear waist region, a crotch region located between the front and rear waist regions, an absorber located at least in the crotch region, a waist opening, The pull-on wearing article includes a pair of leg openings and an indicator arranged in the crotch region and capable of identifying the presence or absence of urination.

In the above-mentioned wearing article, the outer layer sheet formed of a colored fiber nonwoven fabric is located on the outer surface of the front waist region and the crotch region, and the front waist region extends in the lateral direction. A plurality of waist elastic bodies attached to the outer layer sheet so as to be shrinkable in a stretched state are disposed, and gathers are formed in the outer layer sheet due to the shrinkage of the waist elastic body, and the color density increases in appearance. A first colored area is defined, and the indicator is between the absorber and the outer layer sheet in the crotch area, the elastic body extending in the lateral direction is not disposed, and the appearance It is located in the second color gamut where the color density is lower than that of the first color gamut, and the color change after urine contact in the indicator is visible from the outside of the outer layer sheet. Rukoto can.

According to the pull-on wearing article according to one or more embodiments of the present invention, the outer surface of the front waist region and the crotch region is formed from a colored outer layer sheet, and gathers generated by contraction of the waist elastic body in the front waist region. The first colored gamut in which the colored fibers are relatively dense due to the influence and the color density is high in appearance is formed, and the design is improved. In addition, since the indicator does not have an elastic body extending in the lateral direction and is located in the second color gamut having a lower color density in appearance than the first color gamut, the outer side of the outer layer sheet before and after the color change. The presence or absence of urination can be reliably identified.

The drawings illustrate specific embodiments of the invention and include selective and preferred embodiments as well as the essential features of the invention.
The perspective view of the disposable diaper in 1st Embodiment shown as an example of the pull-on wearing article which concerns on this invention. The partially broken expansion | deployment top view of the diaper extended to the vertical direction and the horizontal direction until the maximum expansion | extension of each elastic body (the extent which the gathers of the sheet | seat which attached the material by the contraction effect | action of an elastic material disappear). The exploded perspective view of a diaper. Sectional drawing which follows the IV-IV line shown in FIG. The top view of the front waist area and the front area of a crotch area in the state where each elastic body contracts slightly and the outer layer sheet is gathered. The disassembled perspective view of the diaper which concerns on 2nd Embodiment. The figure similar to FIG. 5 of the diaper which concerns on 2nd Embodiment.

<First Embodiment>
1 to 3, a disposable diaper 10 as an example of a pull-on wearing article according to a first embodiment of the present invention has a longitudinal direction Y and a lateral direction X, and has a skin facing surface and a non-skin on the opposite side thereof. The opposite surface, the front waist region 11, the rear waist region 12, the crotch region 13 located between the front and

rear waist regions

11 and 12, and the liquid absorbing structure extending to the front and

rear waist regions

11 and 12 around the crotch region 13 Body 14. In each figure in which the diaper 10 is developed, each elastic body to be described later is in an extended state against the contraction force. The diaper 10 has a vertical axis P that bisects the dimension in the horizontal direction X, and a horizontal axis Q that bisects the dimension in the vertical direction Y. The crotch area 13 is divided into a front area 21 extending from the horizontal axis P toward the front waist area 11 and a rear area 22 extending from the horizontal axis Q toward the rear waist area for convenience of description. An indicator 60 that causes a color change before and after urination is disposed in the front area 21 of the crotch area 13. In addition, the area | region shown with a dot in each figure shows the density of the color attached | subjected to the outer layer sheet 30, and means the area | region where the density of the color in external appearance is so high that the density of a dot is high. Further, in the present embodiment, “the color density is high in the appearance of the diaper” means that the fibers are dense due to the influence of gathers caused by the arrangement of the elastic body and the outer layer sheet 30 is colored in the appearance. It means that the color looks dark, or the colored sheet looks dark when the colored sheet is laminated on the outer layer sheet 30. Therefore, it does not represent the color density of the outer layer sheet 30 in the developed state of the diaper 10 in which the elastic body shown in FIG.
In the specification, the term "pull-on wearing article" has a defined waist opening and a pair of leg openings, and inserts the wearer's leg into the leg opening and lifts the article over the waist to wear the wearer's body. It means what is attached to.

The diaper 10 has front and rear end portions (outer end portions of the front and rear waist regions 11 and 12) 17 and 18 extending in the horizontal direction X, and both side edge portions 19 extending in the vertical direction Y and facing each other in the horizontal direction X. Both side edges 19 have a concave curvature in the crotch region 13 to fit along the wearer's thigh. The

front side edges

11a and 11b of the front waist region 11 and the

rear side edges

12a and 12b of the rear waist region 12 are intermittently connected to each other in the longitudinal direction Y in the front-rear direction when the diaper 10 is worn. A waist opening 24 and a pair of leg openings 25 are defined by being connected by side seams 23 that extend in the direction. In the side seam 23, the overlapping sheets are fused together by embossing / debossing by heat or ultrasonic waves.

The diaper 10 is located on the non-skin facing surface, and extends to the front and

rear waist regions

11, 12 and the crotch region 13, and the outer layer sheet (colored sheet) 30, located on the skin-facing surface, and substantially the same shape as the outer layer sheet 30. An inner layer sheet 31. The inner layer sheet 31 has an opening 32 at the center, and a part of the liquid absorbing structure 14 is exposed in an inner surface view. The outer layer sheet 30 has a dimension in the longitudinal direction Y larger than that of the inner layer sheet 31, and includes extending

portions

30 a and 30 b that extend from the front and rear end edges of the inner layer sheet 31 to the outside in the longitudinal direction Y.

Between the outer layer sheet 30 and the inner layer sheet 31, a plurality of first and second waist

elastic bodies

41, 42 extending in the transverse direction X between the front and rear side edges of the front and

rear waist regions

11, 12, and the crotch region 13 The first and second leg

elastic bodies

45, 46 extending from the front to the front

end waist regions

11, 12 to the

inner ends

43, 44 are disposed so as to be contractable in an extended state. The first waist elastic body 41 extends in the lateral direction X along the outer end portions (front and rear end portions 17 and 18) of the front and

rear waist regions

11 and 12, and the second waist elastic body 42 is the first waist elastic body. It is located inward in the longitudinal direction Y with respect to 41, and a part thereof is located so as to overlap with the liquid absorbing structure 14 in a plan view of the diaper 10.

1st and 2nd leg elastic bodies have the shape which curved toward 45,46 and the horizontal axis Q. The first leg elastic body 45 includes a curved portion 45a that extends to the inner end 43 of the front waist region 11 along the side edge of the front region 21 of the crotch region 13, and a lateral direction along the horizontal axis Q in the front region 21. And a straight portion 45b extending to X. The second leg elastic body 46 extends to the inner end portion 44 of the rear waist region 12 along the side edge of the rear region 22 of the crotch region 13 and intersects the horizontal axis Q, and the front region 21. And a straight portion 46b extending in the lateral direction X. Since the second leg elastic body 46 extends to the front area 21, the intersecting portion 49 where the first leg elastic body 45 and the second leg elastic body 46 intersect with each other is located in the front area 21. The

straight portions

45b and 46b are spaced apart in the longitudinal direction Y in the longitudinal direction Y by a given dimension. In the present embodiment, the first and second leg

elastic bodies

45, 46 intersect with each other in the front section 21, but as long as the effects of the present invention described later are obtained, they do not have the

straight portions

45b, 46b. Further, it may be formed of only the

curved portions

45a and 46b and may extend along the leg opening edge on both sides of the indicator 60, or only the first leg elastic body 45 may be disposed.

The extended

portions

30a and 30b of the outer layer sheet 30 are bent inward along the folding line 50 and joined to the inner layer sheet 31 with, for example, a hot melt adhesive. Since the extending

portions

30a and 30b form such a joining mode, the extending

portions

30a and 30b cover the first waist elastic body 41 fixed between the inner and

outer layer sheets

30 and 31 from the skin facing surface side. The outer end portions (front and rear end portions 17 and 18) of the

waist regions

11 and 12 are formed by laminating a plurality (two layers) of colored outer layer sheets 30. In addition, in the

inner end portions

43 and 44 of the front and

rear waist regions

11 and 12 where the first and second leg

elastic bodies

45 and 46 and the second waist elastic body 42 intersect, a part of the second waist elastic body 42 is formed. An auxiliary sheet (colored sheet) 51 is disposed so as to cover. By arranging the auxiliary sheet 51, the sheet strength at the leg opening can be improved, and the first and second leg

elastic bodies

45, 46 intersecting the second waist elastic body 42 can be prevented from coming out.

The inner and

outer layer sheets

30, 31 and the auxiliary sheet 51 are, for example, liquid-impermeable and preferably moisture-permeable, have a mass of about 10 to 40 g / m ² and a fiber density of about 0.03 to 0.1 g. Various known fiber nonwoven fabrics such as / cm ³ spunbond fiber nonwoven fabric, SMS (spunbond / meltblown / spunbond) fiber nonwoven fabric, and air-through fiber nonwoven fabric can be used. The outer layer sheet 30 has a total light transmittance such that the indicator 60 is visible from the outer surface. Specifically, the total light transmittance based on JIS K7375 is 50% or more, preferably 60% or more, and more preferably 70% or more. The outer layer sheet 30 can be formed by laminating a plurality of fiber nonwoven fabrics, but is preferably formed from a single fiber nonwoven fabric having the required total light transmittance in consideration of the visibility of the indicator 60. .

In addition, the outer layer sheet 30 and the auxiliary sheet 51 are substantially uniformly colored by adding achromatic or chromatic pigments throughout. The non-woven fabric that forms the outer layer sheet 30 and the auxiliary sheet 51 has a color that is colored in appearance when the diaper is not worn (when the elastic body is disposed, the stretched state). The sheet thickness and fiber density are generally the same so as to be substantially uniform. It is possible to color the outer layer sheet 30 and the auxiliary sheet 51 by printing, but by adding a pigment or a dye to the raw material resin and coloring the constituent fibers, a fiber nonwoven fabric with uneven texture unlike a plastic film. Even if it exists, it can be colored uniformly. The colors of the constituent fibers of the outer layer sheet 30 and the auxiliary sheet 51 may be different from each other. However, when the sheets are laminated, the outer layer sheet 30 has the same color or a similar color. The color density becomes darker. The leak-proof film 56 to which the outer layer sheet 30 and the indicator 60 are applied is a color different from the color before and after the change of the indicator 60, and when they are compared, they are colored in chromatic colors that can be visually discriminated from each other. It is preferable. It is preferable to select arbitrarily the chromatic color employ | adopted for the outer layer sheet 30 using well-known hue rings, such as a Munsell hue ring. For example, when the colors before and after the color change of the indicator 60 are red and blue, as the colors of the outer layer sheet 30 and the leak-proof film 56, a yellow color or a green color can be selected. Further, the color of the outer layer sheet 30 may be a complementary color of the color after the color change of the indicator 60. In such a case, even when the total light transmittance of the outer layer sheet 30 is reduced by coloring, the discoloration of the indicator 60 can be emphasized when urine is excreted. Although the outer layer sheet 30 is colored, it has a relatively high total light transmittance as described above, and thus appears as a lighter color than the actually colored color.

As the first and second waist

elastic bodies

41, 42, for example, a string shape or a strand shape having a fineness of about 400 to 1200 dtex and being stretched about 1.5 to 3.5 times The elastic material can be used. Conditions such as the thickness of the first and second waist

elastic bodies

41 and 42, the expansion ratio, and the separation dimension (pitch) between the elastic bodies can be appropriately changed, but can be stably applied to the wearer's body. In order to be worn, it is preferable to set the conditions of each elastic body so that the extension force of the stretchable region by the first waist elastic body 41 is larger than that of the stretchable region by the second waist elastic body 42. Further, as the first and second leg

elastic bodies

45, 46, for example, the fineness is about 350 to 600 dtex, and the string shape or the like arranged in a state of being stretched about 1.5 to 3.5 times, or A strand-like elastic material can be used.

Referring to FIGS. 2 to 4, the liquid absorbing structure 14 includes a pad-like absorbent body 53 having liquid absorbency, and a body side liner 54 made of a fiber non-woven fabric that is located on the skin facing surface side and has liquid permeability. The body side liner 54 has a pair of barrier sheets 55 disposed on both sides in the lateral direction X, and a leakage prevention film 56 formed between the absorber 53 and the outer layer sheet 30. The absorbent body 53 includes a core material formed from a mixture of wood fluff pulp, absorbent polymer particles, and the like, and a liquid diffusible core cover sheet such as tissue paper covering the entire core material. The leak-proof film 56 is formed from a plastic film having liquid impermeability and moisture permeability.

The pair of barrier sheets 55 are arranged to be separated from each other in the lateral direction X. The proximal edge portion fixed to both sides of the body side liner 54 with, for example, hot melt adhesive, and the front and rear end portions of the body side liner 54 For example, a sleeve-like distal end formed by bending and fixing a side portion of the barrier sheet 55 that extends in the longitudinal direction Y between the front and rear fixed ends fixed with a hot melt adhesive. And a peripheral edge. A flap elastic body 57 is attached to the inside of the distal edge so as to be retractable in an extended state. In the wearing state of the diaper 10, in the barrier sheet 55 exposed from the opening 32 of the inner layer sheet 31, the flap elastic body 57 contracts to separate the distal edge from the body side liner 54 to the wearer's body side, A leak-proof wall is formed which fits the wearer's thigh and prevents leakage of excrement.

As described above, an indicator 60 is provided between the absorber 53 and the leak-proof film 56 in the front area 21 of the crotch area 13 to inform the mother or the wearer of the presence or absence of urination. The indicator 60 has a plurality of lines that are separated from each other in the vertical direction Y and extend in the horizontal direction X. When the indicator 60 gets wet with body fluid such as urine, it becomes colored or discolored and can be visually recognized from the outside. And is applied to the surface of the leak-proof film 56 facing the absorber 53. In this way, by disposing the indicator 60 on the surface of the leak-proof film 56 facing the absorber 53, compared to the case where it is disposed on the surface of the leak-proof film 56 facing the outer layer sheet 30, the absorber The urine exuded from the urine 53 can be contacted promptly and has excellent reactivity. However, in such a case, since the indicator 60 is viewed through the leak-proof film 56 and the outer layer sheet 30, the leak-proof film 56 has at least the same total light transmittance as that of the outer layer sheet 30, that is, at least 50. % Total light transmittance (based on JISK7375) is required. Moreover, it is preferable that the total light transmittance in the state in which the outer layer sheet 30 and the leak-proof film 56 are laminated is about 40% or more.

Further, unlike the present embodiment, the indicator 60 may be disposed on the surface of the leak-proof film 56 that faces the outer layer sheet 30. In such a case, although the indicator 60 is inferior in reactivity as compared with the arrangement mode of the present embodiment, the indicator 60 is visible through only the outer layer sheet 30, and thus has excellent visibility. In addition to forming only the ink layer, the indicator 60 can be formed from an ink layer and a base sheet that preferably contains a required amount of a surfactant. The ink layer of the indicator 60 uses a known material used in this type of field, for example, an ink material containing a PH indicator, and changes color when it comes into contact with urine. The indicator 60 may be various known figures, decorative patterns, patterns, characters, etc. in addition to the line shape in order to improve the design. The color before and after urination of the indicator 60 is either an achromatic color or a chromatic color, but a color different from the color colored on the outer layer sheet 30 so as to be distinguished from the color colored on the outer layer sheet 30 ( (It is not a similar color).

FIG. 5 is a plan view of the front waist region 11 and the front region 21 in a state where the

elastic bodies

41, 42, 45 are slightly contracted and gathers are formed on the outer layer sheet 30. Referring to FIG. 5, when the diaper 10 has the above-described basic configuration, a plurality of regions in which the density of the colored color of the outer layer sheet 30 is different in appearance are formed in the front view of the diaper 10. Specifically, in the front view of the diaper 10, the first region 61 located at the outer end portion 17 of the front waist region 11 and the inner end portion 43 of the front waist region 11 due to the difference in color density. A second region 62 positioned, a third region 63 positioned between the first region 61 and the second region 62, and a fourth region 64 positioned along the leg opening edge in the front region 21 of the crotch region 13. And the fifth area 65 in which the indicator 60 is disposed, surrounded by the second and

fourth areas

62 and 64 in the front area 21.

In the first to fourth areas 61 to 64, the first waist elastic body 41, the second waist elastic body 42, and the first leg elastic body 45 are arranged, and a plurality of such areas that can be visually recognized in the external view are disposed. Large and small gathers are formed. By forming the gathers on the outer surface of the diaper 10, the colored fibers constituting the outer layer sheet 30 formed from the fiber nonwoven fabric become denser than the portion where the gathers are not formed, and the color density is increased. Get higher. Accordingly, the first to fourth regions 61 to 64 in which the

elastic bodies

41, 42, and 45 are disposed and the gathers are formed on the outer surface are the fifth regions 65 in which the elastic members are not disposed and the gathers are not formed on the outer surface. In comparison, it can be said that the color density is high in the appearance of the diaper 10. Therefore, the first to fourth areas 61 to 64 can be defined as a color high-density visual recognition area (first color gamut), and the fifth area 65 can be defined as a color low-density visual recognition area (second color gamut).

In this way, by providing the gradation of the color of the uniformly colored outer layer sheet 30 due to the influence of gathers caused by the contracting action of the elastic body and the lamination of the colored sheets to such an extent that it can be visually distinguished, Contrast is produced and design properties are improved. Further, it is simpler than the case where the ink amount is adjusted in printing to provide color shading, and the production cost can be reduced. The fifth region 65 in which the indicator 60 is arranged has a low color density due to the colored fibers forming the outer layer sheet 30 being relatively sparse with other regions in the front view of the diaper 10, and the indicator 60. Can be prevented from being disturbed by coloring. In the present embodiment, “the colored fibers of the outer layer sheet 30 become dense” means that a part of the outer layer sheet 30 is folded at a gathered portion formed on the outer layer sheet 30 by the contraction action of each elastic body. In the plan view of the diaper 10 in a state where each elastic body is contracted, the mass of the colored fibers per unit area (for example, 1.0 cm ² ) of the outer layer sheet 30 is compared with a state where no gathers are formed. It means to become higher.

Further, in the first region 61, the portion of the outer layer sheet 30 laminated with the inner layer sheet 31 and the extending portion 30a overlap each other in a plan view, and two layers of colored sheets are located. Combined with the formation of gathers by the contracting action of the 1 waist elastic body 41, the colored fibers become denser. Similarly, in the second region 62, the outer layer sheet 30 and the colored auxiliary sheet 51 overlap each other in a plan view, and the two colored sheets are positioned, so that the contraction of the second waist elastic body 42 occurs. Combined with the gathering of the action, the colored fibers become more dense. Therefore, it can be said that the first and

second regions

61 and 62 have higher color density in appearance as compared with the third and

fourth regions

63 and 64 in which a plurality of colored sheets are not stacked. Furthermore, by setting the separation dimension (pitch) of the first waist elastic body 41 to be smaller than that of the second waist elastic body 42, more fine gathers are formed in the first region 61, and the fibers than the second region 62 are formed. Can be dense. Furthermore, by setting the separation dimension of the first leg elastic body 41 to be smaller than the separation dimension of the second waist elastic body 42, more fine gathers can be formed in the fourth region 64 than in the third region 63. The fibers can also be dense.

From the above, the correlation between the color densities of the front waist area 11 and the front area 21 of the crotch area 13 in each of the areas 61 to 65 is as follows: first area 61 ≧ second area 62 ≧ fourth area 64 ≧ third area 63> the fifth region 65. Thus, in the front view of the diaper 10, when there are a plurality of regions having different color densities, the color gradation and contrast become clear and the design is improved. Moreover, the position of the front waist region 11 in the wearing state of the diaper 10 is provided by arranging the relatively high-concentration first and

second regions

61 and 62 at the inner and

outer end portions

17 and 43 of the front waist region 11. It can be easily recognized from the outside, and can function as positioning for easily correcting the position of the diaper 10 that has been displaced in the vertical direction to an appropriate position according to the wearer's body.

In addition, since the auxiliary sheet 51 is an option, there may be a case where the auxiliary sheet 51 is not disposed in the second region 62. In such a case, the color densities of the second area 62 and the third area 63 are substantially equal. It is also conceivable to make the distance between the first and second leg

elastic bodies

45, 46 equal to that of the second waist elastic body 42. Therefore, in addition to the above, the correlation between the color densities of the front waist region 11 and the front region 21 in each region is as follows: first region 61> second region 62≈third region 63≈fourth region 64> fifth region 65. Further, since the central portion of the third region 63 overlaps with the liquid absorbing structure 14 in a plan view, when the liquid absorbing structure 14 is achromatic such as white, it is transmitted and the outer layer sheet is viewed in appearance. The color colored 30 can be seen lighter than both sides of the third region 63.

As described above, in the fifth region 65 in which the indicator 60 is disposed, no elastic body is disposed, and the gathering due to the contraction action is not formed, so that the color of the outer layer sheet 30 is the most in the front view of the diaper 10. This is a region where the density of the low is low. The indicator 60 is surrounded by the second region 62 and the fourth region 64 having a higher color density than that, thereby attracting the eyes of the wearer / wearing assistant in a front view. Since the second and

fourth regions

62 and 64 surrounding the liquid absorbing structure 14 are separated from each other by a given dimension, the first leg elastic body 41 and the second leg elastic body 41 and the second region disposed in each region are separated from each other. Gather due to the contracting action of the waist elastic body 42 is not formed in the area where the indicator 60 is disposed. Since the fifth region 65 is adjacent to the second region 62 having a relatively high color density, the contrast of the color becomes clear and the visibility of the indicator 60 is improved.

For example, when the outer layer sheet 30 is pink and the leak-proof sheet 56 and the liquid absorbing structure 14 are white, the fifth region 65 where the indicator 60 is located has a relatively low color density of the outer layer sheet 30. Therefore, the white color of the leak-proof sheet 56 and the liquid absorbing structure 14 is transmitted. Accordingly, in each of the areas 61 to 64 forming the first color gamut, a dark gradation and a light pink color are mixed to generate a color gradation, and the white color transmitted from the outer layer sheet 30 and the pink color thereof are used. Contrast is formed, and the indicator 60 (for example, yellow) located in the white fifth region 65 is more conspicuous than the external appearance and is easily visible.

Moreover, the outermost part 60a located in the front waist area 11 side among the indicators 60 is adjoining to the 2nd area | region 62 where the 2nd waist elastic body 42 is arrange | positioned, and is influenced by the contraction effect | action. There is a possibility that in the second region 62, the auxiliary sheet 51 is arranged in addition to the inner and

outer layer sheets

30 and 31, so that the contraction of the second waist elastic body 42 is suppressed. It can be said that gathers are hardly formed in the outermost portion 60a and the vicinity thereof. Therefore, there is no possibility that the colored fibers in the outermost portion 60a of the indicator 60 become relatively dense, and the indicator 60 is not gathered to deform it.

It should be noted that the portions where the elastic bodies overlap with each other in the plan view of the diaper 10, for example, the end portions of the second waist elastic body 42 and the end portions of the first leg elastic body 41 at the inner ends of the front

side edge portions

11 a and 11 b. In the intersecting portion 70 that overlaps or the intersecting portion 49 between the first leg elastic body 45 and the second leg elastic body 46, the fibers are more fibers than the other portions where the elastic bodies are disposed by the contraction force of the overlapping elastic bodies. It is conceivable that the color density becomes higher and the color density becomes higher. Therefore, when the color density is locally increased by the intersecting

portions

49 and 70, variations due to color shading in the front view of the diaper 10 are increased, and the design is excellent. In addition, the cross section 49 having a high concentration in the second area 62 and the fourth area 64 is located on the inner and outer sides of the indicator 60 in the longitudinal direction Y, respectively. 60 can be made more prominent.

Second Embodiment
Since the basic configuration of the diaper 10 according to the present embodiment is the same as that of the first embodiment, only different configurations will be described below. 7 is a plan view of the front waist region 11 and the front region 21 in a state in which each

elastic body

41, 42, 45 is slightly contracted and a gather is formed in the outer layer sheet 30 as in FIG. It is.

With reference to FIGS. 6 and 7, in the diaper 10 according to the present embodiment, the second waist elastic body 42 is partially cut or removed in the front and

rear waist regions

11, 12, thereby substantially exhibiting a stretching action.

Non-elastic regions

71 and 72 are located. The

inelastic regions

71 and 72 are located in the central portions of the front and

rear waist regions

11 and 12 and overlap the front and rear end portions of the liquid absorbing structure 14 in plan view. As described above, the

non-elastic regions

71 and 72 are disposed in the portion overlapping the liquid absorbing structure 14, thereby causing a decrease in liquid absorbing performance caused by the direct action of the contraction force by the second waist elastic body 42. Such large wrinkles and bends can be suppressed from being formed in the liquid absorbing structure 14. The

non-elastic regions

71 and 72 are snap-backs of a part of the second waist elastic body 42 (the vicinity of the joint end where the non-fixed part of the elastic body that is not fixed to the sheet is fixed to the sheet by its contraction) Or by heat treatment or chemical treatment so that the expansion and contraction force does not substantially function.

In the present embodiment, since the non-elastic region 71 where the expansion / contraction function of the second waist elastic body 42 is not substantially expressed is located in the central portion of the front waist region 11, no gather is formed in the region, and the outer layer sheet The colored fibers constituting 30 do not become dense, and sixth regions 66 having a lower color density than the third regions 63 located on both sides are located. Further, since the liquid absorbing structure 14 is disposed in the same manner as the fifth region 65 in which the indicator 60 is disposed, the sixth region 66 has the same color density as the fifth region 65. As described above, in the front waist region 11, the first region 61 and the sixth region 66 having substantially the same color as the fifth region 65 surrounded by the pair of third regions 63 and the second region 62 are located. Therefore, the design by color gradation and shade change is improved. Further, since the fifth region 65 and the sixth region 66 having the same color density are arranged in the vertical direction Y across the second region, the color change of the indicator 60 at the time of urination can be made clearer by comparing them. Can be identified.

In the

inelastic regions

71 and 72, decorative sheets (patches) 75 and 76 in which decorative elements such as symbols and characters are arranged on the surface facing the outer layer sheet 30 are arranged. By disposing the

decorative sheets

75 and 76 in the

inelastic regions

71 and 72, the contraction force by the second waist elastic body 42 is hardly applied to the

decorative sheets

75 and 76, and gathers are formed to deform the decorative elements. It will not be difficult to see or see. The decorative element has a color different from the color of the outer layer sheet 30 so as to be visible from the colored outer layer sheet 30 or overlaps with the outer layer sheet 30, thereby differentiating the other portions of the front and

rear waist regions

11 and 12. You may have the hue | tone which produces the color which can be distinguished on an external appearance.

In the present specification, the color density in the front waist region 11 and the front region 21 of the crotch region 13 constituting the front view of the diaper 10 is mainly described, but as long as the outer layer sheet 30 forms the entire outer surface of the diaper. In this case, it can be said that the same configuration and the effect are produced in the rear waist region 12 and the rear region 22. Therefore, for example, when the first leg elastic body 45 and the second leg elastic body 26 are arranged so as to intersect in the rear area 22 and the indicator 60 is arranged in the rear area 22, the rear view of the diaper 10 is obtained. Therefore, the correlation of the color density as in the front view of the diaper 10 occurs.

As each constituent material constituting the diaper 10 according to the present invention, various known materials that are usually used in this type of article can be used without limitation in addition to the materials described in the specification. Moreover, the outer surface of the whole diaper 10 is not the structure formed from one outer layer sheet 30, but the front and

rear waist regions

11, 12 and the crotch region 13 are configured from separate waist panels, and the outer layer sheet is a plurality of colored sheets. The aspect formed from may be sufficient. In the specification and claims, terms such as “first”, “second”, and “third” are used to simply distinguish similar elements, positions, and the like.

The disclosure relating to the present invention described above can be organized into at least the following matters.
A front waist region, a rear waist region, a crotch region positioned between the front and rear waist regions, an absorber positioned at least in the crotch region, a waist opening, and a pair of leg openings. And a pull-on wearing article that includes an indicator that can be used to identify the presence or absence of urination disposed in the crotch region, on the outer surface of the front waist region and the crotch region, an outer layer sheet formed from a colored fiber nonwoven fabric. Located in the front waist region is a plurality of waist elastic bodies that extend in the lateral direction and are attached to the outer layer sheet so as to be contractible in an expanded state, and the outer layer is contracted by the contraction of the waist elastic body. A first color gamut is defined in which gathers are formed in the sheet and the color density is high in appearance,
The indicator is located between the absorber and the outer layer sheet in the crotch region, the elastic body extending in the lateral direction is not disposed, and has a color density higher than that of the first colored region in appearance. Is located in a low second color gamut, and the color change after urine contact in the indicator can be visually recognized from the outside of the outer layer sheet.

The pull-on wearing article according to the present invention disclosed in the above paragraph includes at least the following embodiment, which may be adopted alone or in combination.
(1) The total light transmittance based on JISK7375 of the outer layer sheet is at least 50%.
(2) Between the said absorber and the said outer layer sheet, the leak-proof film formed from the plastic film located in the non-skin opposing surface side of the said absorber is arrange | positioned, The said indicator is the said absorber and It is located between the leakproof film and the leakproof film has a color different from the color before and after the color change of the indicator.
(3) The front waist region has an outer end portion along the waist opening, the outer end portion, and an inner end portion facing and spaced apart in the longitudinal direction, in which the waist elastic body is disposed, and the outer end portion In the part, a first region having the darkest color in the outer surface view is defined in the front waist region where the outer layer sheets are laminated.
(4) A colored auxiliary sheet is disposed at the inner end portion of the front waist region, and the auxiliary sheet has the same color or a similar color as the outer layer sheet.
(5) The waist elastic body includes a plurality of first waist elastic bodies arranged at the outer end portion, and a plurality of second waist elastic bodies positioned on the inner side in the longitudinal direction than the first waist elastic body. The separation dimension of the second waist elastic bodies is larger than the separation dimension of the first waist elastic bodies.
(6) A pair of curved portions extending in a convex shape from the inner end portion of the front waist region to the crotch region and extending along the leg opening, and a straight portion extending in the lateral direction in the crotch region. A leg elastic body is further provided, and the indicator is positioned between the pair of curved portions.
(7) A first region located at the outer end of the front waist region, a second region located at the inner end of the front waist region, and between the first region and the second region A third region located; a portion located on the front waist region side of the crotch region; and a fourth region where the leg elastic body is disposed; and surrounded by the second region and the fourth region; It is divided into a fifth area where the indicator is located, the first area has the highest color density in appearance as compared with other areas, and the fifth area has an appearance as compared with other areas. The color density in vision is the lowest.
(8) The correlation of the color density in the external appearance of the first to fifth regions is: first region ≧ second region ≧ fourth region ≧ third region> fifth region.
(9) The second waist elastic body is cut or removed in a region where the absorber is present to form a non-elastic region, and the decorative element is visible from the outside of the outer layer sheet on the surface facing the outer layer sheet. A decorative sheet having a

10 Disposable diapers (wearing pull-on items)
DESCRIPTION OF SYMBOLS 11 Front waist area 12 Rear waist area 13 Crotch area 14 Liquid absorption structure 17 Outer end part 30 of front waist area Outer sheet 41 First waist elastic body (waist elastic body)
42 2nd waist elastic body (waist elastic body)
43 Inner end 45 of the front waist region First leg elastic body (leg elastic body)
45a Curved portion 45b of the first leg elastic body Straight portion 56 of the first leg elastic body Leakproof film 60 Indicator 61 First region (first colored region)
62 Second area (first colored area)
63 Third area (first colored area)
64 Fourth area (first colored area)
65 5th area (2nd color gamut)
71 Inelastic region 75 Decorative sheet

Claims

A front waist region, a rear waist region, a crotch region positioned between the front and rear waist regions, an absorber positioned at least in the crotch region, a waist opening, and a pair of leg openings. And a pull-on wearing article comprising an indicator capable of identifying the presence or absence of urination disposed in the crotch region,
On the outer surface of the front waist region and the crotch region, an outer layer sheet formed from a colored fiber nonwoven fabric is located,
A plurality of waist elastic bodies extending in the lateral direction and attached to the outer layer sheet so as to be contractible in an expanded state are disposed in the front waist region, and the outer layer sheet is gathered by contraction of the waist elastic body. Is defined, and a first color gamut having a high color density in appearance is defined,
The indicator is located between the absorber and the outer layer sheet in the crotch region, the elastic body extending in the lateral direction is not disposed, and has a color density higher than that of the first colored region in appearance. Is located in the low second color gamut,
The wearing article, wherein a color change after urine contact in the indicator can be visually recognized from the outside of the outer layer sheet.
The wearing article according to claim 1, wherein the total light transmittance based on JISK7375 of the outer layer sheet is at least 50%.
Between the absorber and the outer layer sheet, a leak-proof film formed from a plastic film located on the non-skin-facing surface side of the absorber is disposed, and the indicator includes the absorber and the leak-proof The wearing article according to claim 1 or 2, which is located between the film and the leak-proof film has a color different from the color before and after the discoloration of the indicator.
The front waist region has an outer end portion along the waist opening, the outer end portion and an inner end portion facing and spaced apart in the longitudinal direction, in which the waist elastic body is disposed, and the outer end portion includes The wearing article according to any one of claims 1 to 3, wherein, in the front waist region where the outer layer sheets are laminated, a first region darkest in color when viewed from the outside is defined.
The wearing article according to claim 4, wherein a colored auxiliary sheet is disposed at the inner end portion of the front waist region, and the auxiliary sheet has the same color or a similar color as the outer layer sheet.
The waist elastic body includes a plurality of first waist elastic bodies arranged at the outer end portion, and a plurality of second waist elastic bodies positioned on the inner side in the longitudinal direction than the first waist elastic body. The wearing article according to claim 4 or 5, wherein the wearing article is configured such that a distance between the second waist elastic bodies is larger than a distance between the first waist elastic bodies.
A leg elastic body having a pair of curved portions extending in a convex shape from the inner end portion of the front waist region to the crotch region and extending along the leg opening, and a straight portion extending in the lateral direction in the crotch region. The wearing article according to any one of claims 4 to 6, wherein the indicator is located between the pair of curved portions.
A first region located at the outer end portion of the front waist region, a second region located at the inner end portion of the front waist region, and a first region located between the first region and the second region. 3 area, 4th area | region which is located in the part by the side of the said front waist area of the said crotch area, and the said leg elastic body is arrange | positioned, The said indicator surrounded by the said 2 area | region and the said 4th area | region is The first region has the highest color density in appearance as compared with other regions, and the fifth region is most in appearance as compared with other regions. The wearing article according to claim 7, wherein the color density is the lowest.
The wearing article according to claim 8, wherein the correlation of color density in the appearance of the first to fifth regions is: first region ≧ second region ≧ fourth region ≧ third region> fifth region.
A decoration having a decorative element visible from the outside of the outer layer sheet on the surface facing the outer layer sheet, wherein the second waist elastic body is cut or removed in a region where the absorber is present to form an inelastic region. The wearing article according to any one of claims 6 to 9, wherein a sheet is disposed.