JP5816036B2 - Absorbent articles - Google Patents

Description

  The present invention relates to an absorbent article having overhang portions on both sides in the width direction.

  Some absorbent articles such as diapers apply a technique for visually informing a guardian, a caregiver, or the like that urination or the like has been absorbed and held in an absorber. For example, there is a method of visually recognizing the discoloration by providing an indicator that changes color when it comes into contact with moisture between the back sheet and the absorber, and enabling the see-through from the back sheet side (see, for example, Patent Documents 1 to 3). Some urine pads for adults, such as those placed on diaper absorbers or underwear, can be seen through from the back sheet side of the urine pad by providing an indicator between the back sheet and the absorber. . On the other hand, there exists a technique which provides the hole for making it easy to visually recognize the indicator of an internal urine pad in the absorber of the diaper main body which covers an outer side (refer patent document 4).

Japanese Patent Laid-Open No. 11-4852 JP 2004-222868 A Japanese Utility Model Publication No. 58-7809 JP 2007-97627 A

  The techniques disclosed in Patent Documents 1 to 3 are based on the premise that an indicator is arranged in the center of the diaper, and do not consider arranging the indicator inside the outer wearing article like a urine collecting pad. Assuming that a urine collecting pad with an indicator provided at the center of the article is used inside a diaper, underwear, pad holder or the like as in the above document, it is difficult to visually recognize the indicator from the outside. Usually, the inner indicator cannot be confirmed unless the outer garment such as a diaper is moved or the belly around the diaper is widened and opened. Moreover, in the technique of the said patent document 4, since there exists a hole in the absorber by the side of a diaper, the absorption performance will fall inevitably. If it is possible to make it easier to confirm the replacement time of the internal urine collection pad without degrading the inherent absorption performance of the absorbent body and wearing an absorbent article or underwear, the convenience is greatly improved. Considering that urination is frequent during the day, unlike defecation, it is possible for the user or caregiver to greatly improve the annoyance associated with replacing the urine collection pad.

  Accordingly, the present invention provides an absorbent article such as a urine pad that can be used by placing it inside an outer-wearing article such as a diaper, underwear, or pad holder, and makes it easy to confirm that urination has occurred. With the goal.

  The present invention comprises a liquid-permeable top sheet disposed on the skin contact surface side, a waterproof back sheet disposed on the non-skin contact surface side, and an absorbent body interposed between the two sheets. An absorbent article having an absorbent main body portion, the absorbent article having a longitudinal direction in a direction connecting the abdominal side portion and the back side portion via the crotch portion and a width direction intersecting with the longitudinal direction. The absorber portion is used by being placed on the inner side surface of the outer-wearing article, and can be folded back to the back sheet side projecting outward in the article width direction on both sides of the absorbent main body. There is an overhanging portion, and the overhanging portion is configured such that an indicator portion that changes color when in contact with liquid is disposed between two layers of a liquid-impervious sheet, and the member constituting the overhanging portion absorbs the overhanging portion. Provided with an intrusion part that enters the side of the main body part, the intrusion part and the absorption body Are provided at the joint, and the joint has an area through which moisture can permeate, and the moisture-permeable area provides an absorbent article capable of guiding the liquid to the indicator section. It is.

  The absorbent article of the present invention is an absorbent article such as a urine pad that can be used by placing inside an outer-wearing article such as a diaper, underwear, or pad holder, and is excellent in that it is easy to confirm that urination has occurred. There is an effect.

It is a partially cutaway perspective view schematically showing a state in which the urine collecting pad as one embodiment (Embodiment 1) in the absorbent article of the present invention is developed and slightly curved along the crotch. It is a top view which shows typically the state which expand | deployed and extended the urine collection pad of FIG. It is an expanded sectional view containing the marker area | region of the III-III line cross section of FIG. FIG. 4 is an enlarged cross-sectional view including a liquid hardly diffusible region taken along line IV-IV in FIG. 1. FIG. 2 is a partially enlarged plan view schematically showing the periphery of a portion where the left wing portion of FIG. 1 and the wing portion of the absorption main body portion are inserted. It is an expanded sectional view of the VI-VI line section of Drawing 1, (a) shows the state where the wing part before wearing was extended, and (b) shows the state where the wing part was folded and fixed to clothes. It is an expanded sectional view containing the label | marker area | region equivalent to FIG. 3 in the urine collection pad as another embodiment (Embodiment 2) of this invention. FIG. 5 is an enlarged cross-sectional view including a liquid non-diffusible region corresponding to FIG. 4 in a urine collection pad as another embodiment (Embodiment 2) of the present invention. FIG. 6 is a partially enlarged plan view corresponding to FIG. 5 in a urine collection pad as another embodiment (Embodiment 2) of the present invention. It is a top view which shows typically the state which expand | deployed and extended | stretched the urine collection pad as another embodiment (Embodiment 3) of this invention. It is sectional drawing of the XI-XI line cross section of FIG. It is explanatory drawing which shows typically the other preferable plane arrangement | positioning in the indicator in a wing part, and a liquid diffusable sheet.

(Embodiment 1)
FIG. 1 is a partially cutaway perspective view schematically showing a state in which a urine collecting pad as a preferred embodiment (Embodiment 1) in the absorbent article of the present invention is developed and slightly bent along the crotch. . 2 is an expanded plan view of FIG. 1, and FIG. 3 is an enlarged cross-sectional view including a marker region taken along line III-III of FIG. 1 and 2, the indicator portion (indicator 6) is shown in a spotted pattern so that the shape and arrangement of the indicator portion (indicator 6) are clear (the same applies to FIGS. 5, 9, 10, and 12).

  As shown in FIG. 1, the urine collecting pad 10 of Embodiment 1 includes a liquid-permeable top sheet 1 disposed on the skin contact surface side, and a waterproof back sheet disposed on the non-skin contact surface side. 2 and an absorbent main body portion 10a made of an absorbent body 3 interposed between the two sheets and a wing portion 5 as an overhanging portion projecting outward in the width direction. The absorption main body 10a is rectangular in plan view, and includes an abdominal side F disposed on the wearer's abdomen, a crotch C extending along the crotch, and a back side R disposed on the back. It consists of each part.

  In the present invention, unless otherwise noted, the side relatively close to the human body when worn by the wearer (typically, the side that comes in contact) is the skin surface side, the skin contact surface side, or the surface side. The inner side is referred to as the non-skin surface side or non-skin contact surface side or the back side or outer side. The direction positioned on the front side of the human body when worn is referred to as the front, and its end is referred to as the front end, and the direction positioned on the rear is referred to as the rear, and the end is referred to as the rear end. The normal direction of the front surface or the back surface of the absorbent article is referred to as the thickness direction. Furthermore, in the plan view of the absorbent article, a direction from the ventral side F to the back side R via the crotch C is referred to as a vertical direction (Y direction in FIG. 1), and a direction orthogonal to the vertical direction is the width direction. (X direction in FIG. 1). The vertical direction typically coincides with the front-rear direction of the human body when worn. Further, the overhanging portion (wing portion) is referred to as a surface direction that coincides with the skin surface side or the non-skin surface side of the absorbent main body portion in the expanded and elongated state. Moreover, an outer-wearing article refers to the wearing article which can arrange | position and fix the absorbent article of this invention inside, and is specifically an underwear, a diaper, or a pad holder.

  In the urine collecting pad 10, the top sheet 1 exists so as to cover the skin contact surface side of the absorbent body 3 formed by covering the absorbent core 31 with the covering sheet 32 up to the left and right edges in the width direction (see FIG. 1). ). Further, a pair of side sheets 4, 4 are laminated on the skin contact surface side of the top sheet 1 with a length that matches the longitudinal direction of the top sheet 1, and respectively extend outward in the width direction left and right side edges of the absorber 3. (See FIGS. 1 and 2). The extending part of the side sheet 4 and the extending part of the back sheet 2 in the width direction are laminated and joined on the outer side in the width direction (see FIGS. 1 and 2). The side sheet 4 has a free end 41 that forms an orthostatic leak-proof cuff as a three-dimensional gather forming member, and the three-dimensional gather elastic member 42 built in the free end 41 is in the longitudinal direction of the urine collecting pad when worn. To stand up so as to protrude toward the wearer's skin surface (see FIGS. 3, 4 and 6). As a result, the free edge 41 firmly abuts the skin, effectively blocking excretion to the outside and effectively preventing side leakage. It is preferable that the elastic member for three-dimensional gathers is disposed at least in the crotch portion C and further extends to the abdominal side F and / or the back side R. As the bonding method, a normal method used for this type can be used. 3, 4, and 6, the three-dimensional gather is shown standing for the sake of understanding, but is not standing in the extended and unfolded state shown in FIG. 2.

  The urine pad 10 is formed with a wing portion 5 as an overhanging portion protruding outward from the edge in the left-right width direction in the vicinity of the crotch portion C of the absorbent body portion 10a in plan view (see FIG. 5). 2). The wing part 5 has a configuration in which an indicator part (indicator 6) that changes color when in contact with liquid is disposed between two layers of liquid-impervious sheets (see FIG. 3). Here, the difficult liquid permeability means a property that hardly allows the liquid to pass through, and includes waterproof properties, water repellency, and liquid impermeability properties. In the first embodiment, the two layers of the hardly liquid-permeable sheet are a water-repellent front side sheet 51 and a waterproof back side sheet part 52. The front sheet portion 51 is a sheet disposed on the same surface side as the top sheet 1 of the absorbent main body 10a in a state where the urine collecting pad 10 is expanded and extended. The front-side sheet 51 is folded in a mountain when the urine collecting pad 10 is attached and comes into contact with the skin of the wearer's crotch and the like, and is disposed on the non-skin-contacting side rather than the outer wearing article such as an underwear or a diaper cover. (See FIG. 6). On the other hand, the back side sheet | seat 52 is a sheet | seat distribute | arranged to the same surface side as the back surface sheet 2 of the absorption main body part 10a in the said expansion | deployment state. The back sheet 52 is arranged so as to be folded at the time of wearing and come into contact with the outer wearing article (see FIG. 6). Moreover, the front side sheet | seat 51 becomes a non-skin contact side rather than an outer side wearing article at the time of mounting | wearing, and can be visually recognized from the outer side of this outer side wearing article. Therefore, it is preferable that the front sheet 51 has a high light transmittance so that the discoloration of the indicator 6 inside the wing portion 5 can be visually recognized.

  The indicator 6 is disposed between the front side sheet 51 and the back side sheet part 52, and has a function of enabling visual detection of liquid excretion when it comes into contact with the liquid. The visual change of the indicator 6 is visible through the front side sheet 51. The indicator 6 has a function of reacting to moisture such as urination, and is formed using a hydrophilic composition including a color indicator whose color changes with a change in pH, for example. The indicator 6 can be formed by a method used for this type of article. For example, the indicator 6 may be formed by directly applying or impregnating the back sheet 52 with a discolorable material such as the above-described composition. What applied and impregnated sheet members, such as a hydrophilic nonwoven fabric, may be used. “Visual change” or “discoloration” means a color change from one color to another, a color disappearance from colored to colorless, and a color appearance from colorless to colored by contact with moisture. .

  The wing portion 5 having such a configuration has a wing outer peripheral edge portion 5s so as to draw a gentle trapezoidal curve from the wing base end position 5t, which is a boundary with the absorption main body portion 10a, in the plan view. (See FIG. 2). Furthermore, the wing part 5 enters the inside of the absorption main body part 10a beyond the wing base end position 5t, and constitutes an entry part. In addition, the entering part of the wing part 5 is not limited to the part into which the entire constituent member enters, but also refers to a part into which only a part of the constituent member enters. Due to this entering portion, a part of the liquid absorbed in the absorber 3 is taken in from the inner end of the wing portion 5, and the indicator 6 is discolored in a timely manner. Thereby, even if the absorbent body 3 portion of the urine collecting pad 10 is placed on the inner side surface of the outer wearing article and used, the discoloration of the indicator 6 on the outer side of the outer wearing article is recognized, and the urine collecting pad is recognized. 10 wetness can be known. And it is possible to know the replacement time of the urine collecting pad 10 in a timely manner. The configuration of the part where the wing part 5 enters the absorption body part 10a and the details of the mechanism of action will be described later. In the present invention, the wing portion refers to a member that can be folded back and positioned on the outer surface of clothing or the like, and the shape is not limited to the wing shape as shown in FIG.

  From the viewpoint of ease of taking in the liquid, the application object of the indicator 6 is preferably the liquid diffusable sheet 7. By using the liquid diffusable sheet 7, the liquid diffusing function of the liquid diffusable sheet 7 actively draws the amount necessary for the discoloration of the liquid in the absorber 3 toward the indicator 6, and as a result, the indicator 6 Discoloration can be caused smoothly. In Embodiment 1, the strip-shaped liquid diffusable sheet 7 having a length in the article width direction (X direction) is wider than the indicator 6 and the skin of the liquid diffusible sheet 7 is wide. An indicator 6 is applied to the central portion of the width on the contact surface side (see FIG. 2). In this way, the band-like liquid diffusive sheet 7 and the indicator 6 are laminated to form the marker region 9 in the wing portion 5. With such an arrangement, it becomes possible to guide body fluid such as urine to the indicator part in a wide range, and it becomes easier to visually recognize that the indicator is gradually discolored as the amount of urination increases. It is preferable because the timing for exchanging articles can be easily measured.

  It is preferable that a plurality of marker regions 9 composed of the indicator 6 and the liquid diffusable sheet 7 are arranged at intervals in the longitudinal direction (Y direction) of the article. Such an intermittent arrangement is effective in preventing liquid leakage because the area of the liquid drawing region necessary for discoloration of the indicator 6 can be minimized. Further, the amount of urine drawn is increased near the urination point portion, and the discoloration of the portion becomes easy to see due to the difference in the discoloration amount from the other portions, so that the timing of article replacement can be easily measured. In the first embodiment, the sign areas 9 are arranged on the left and right wing parts 5 at four equal intervals in the article longitudinal direction (Y direction) at equal intervals. As described above, the marker regions 9 are arranged at equal intervals over the entire wing portion 5, so that the amount of discoloration of the indicator tends to increase in the vicinity of the portion where the amount of urination is large, and the indicator increases as the amount of urination increases. Since it is easy to visually confirm that the discoloration gradually occurs, it is easy to measure the replacement timing, which is preferable.

  In the urine pad 10, the portion of the wing portion 5 where the marker region 9 is not disposed is a portion where the water-repellent front sheet 51 and the waterproof back sheet 52 are joined and the liquid diffusible sheet 7 is disposed. It is preferable that the liquid diffusibility region 8 is relatively inferior in liquid diffusibility as compared with (see FIG. 2). The liquid non-diffusible region 8 is preferably a hydrophobic bonding form between the front side sheet 51 and the back side sheet 52, and in particular, a hydrophobic adhesive, a heat sealing process or an ultrasonic sealing process between the both sheets. Etc. are preferable. With such a configuration, moisture is preferentially induced in the indicator 6 portion, and the color change timing of the indicator 6 is improved. Further, since it is difficult for excessive moisture to be guided to the wing portion 5, it is useful for suppressing moisture from leaking outside through the wing portion 5.

In order to achieve both the preferential guidance of the liquid to the indicator 6 as described above and the prevention of side leakage of liquid by suppressing unnecessary liquid diffusion, the width of each indicator 6 (length in the longitudinal direction of the article) (w ₁ ) , the ratio of the width of each liquid diffusive sheet 7 (the length of the article longitudinal) (w _2), and a width (in the article longitudinal length) of each liquid flame diffusion region _{8 (w 3) (w 1} / w ₂ / w ₃ ) is preferably 1 / 1.5 / 1 to 1/3/5, and more preferably 1/2/1 to 1/3/4. By being within the above-mentioned range, it becomes easy to achieve both good body fluid drawability and body fluid leakage control in the wing portion. Also, by setting it above the lower limit, it becomes easier to design the wing part to a size that can be fixed to underwear, diapers, or pad holders. By setting the wing part below the upper limit, if the left and right wing parts overlap when worn It becomes easy to design to the magnitude | size to mount without attaching.

  In the first embodiment, the liquid diffusive sheet 7 is arranged so as to reach between the top sheet 1 and the absorber 3 from the viewpoint of the above-described ease of liquid uptake (see FIGS. 2 and 3). With this configuration, moisture such as urine excreted by the absorbent article is easily guided to the wing part 5, and the timing of discoloration of the indicator 6 becomes more appropriate. When the liquid diffusable sheet 7 is disposed between the top sheet 1 and the absorber 3 as in the first embodiment, it is suitable for knowing the urination time early. In particular, in the case of a type having a small absorption capacity, when a large amount of urine is discharged at a time, discoloration can be known faster than reaching the absorption limit, which is suitable for preventing leakage.

  As a preferable range in a plan view in which the liquid diffusable sheet 7 is disposed, from the viewpoint of both preferential guidance of the liquid to the indicator 6 and prevention of liquid side leakage by suppressing unnecessary liquid diffusion, The longitudinal end preferably has a width of 50 mm back and forth from the longitudinal center line, and more preferably has a width of 30 mm. Moreover, it is preferable from a viewpoint of the visual change with the sufficient timing of the indicator 6 that it is staying in the side part area | region of an absorber as an edge part inside a width direction. More specifically, the inner edge of the liquid diffusable sheet 7 exists outside in the width direction from the region of the width of 1/3 left and right when the absorber 3 is divided into three in the width direction on the basis of the maximum width portion. Is preferred. Moreover, when the water-repellent side sheet is provided in the width direction side part of the absorber 10 like this embodiment, the free end inside the width direction of the side sheet when the absorbent article is in the extended state It is preferable that the inner edge of the liquid diffusive sheet exists outside the edge 41. It is preferable that the said conditions are achieved in the crotch part C of an absorbent article. In addition, the shape of the absorber 3 is a so-called hourglass shape, and the maximum width in the longitudinal direction of the absorber 3 is divided into three parts. It is also possible not to. If there is no part, it is only necessary to satisfy the above conditions in the other part, and if there is no right and left 1/3 region in the crotch part C, in the ventral part or the dorsal part It is sufficient if the above conditions are satisfied.

  In the first embodiment, the indicator 6 extends to the absorption main body portion 10a, but the indicator 6 may exist only in the wing portion 5. In that case, from the viewpoint of reliably delivering the liquid in a state where the wing 5 is bent, the indicator 6 located closest to the absorption body is disposed within a distance of 20 mm from the joint end k (see FIGS. 3 and 4). It is preferable to be arranged within 10 mm, more preferably within 2 mm.

  In the urine collection pad 10 of Embodiment 1, the entry portion of the wing portion 5 and the absorption main body portion 10a are fixed by a joint portion formed along the vertical direction (Y direction). As a method for forming the joint, a method used for this type of article can be used. For example, joining between members using a hot melt adhesive, joining such as embossing, heat sealing, ultrasonic sealing, or the like, by partially fusing and laminating members laminated by pressure treatment, and the like. Examples of the embossing include thermal embossing, ultrasonic embossing, and high-frequency embossing. This joint portion is for firmly fixing the wing portion 5 so as not to be displaced or separated from the absorption main body portion 10a when the urine collecting pad 10 is used, and for preventing liquid leakage. On the other hand, the entry part of the wing part 5 as a joining target is also a part that should become a liquid guiding path so that the indicator 6 can be easily discolored. Therefore, the joint between the wing part 5 and the absorption main body part 10a needs to be compatible with both the fixing property, the liquid leakage preventing property, and the liquid drawing.

  Therefore, in the present invention, by arranging a water-permeable region (hereinafter also referred to as “moisture-permeable region”) in the joint portion, while maintaining the fixing property and liquid leakage prevention property of the wing portion 5, The uptake of liquid can be ensured. That is, in the joint portion, the moisture permeable region can guide the liquid to the indicator 6. This moisture permeable region is obtained by a method such as (1) weakening the bonding strength, (2) non-bonding, or (3) easily dissolving water using a water-soluble adhesive, for a part of the bonding portion. Can be formed. In addition, the arrangement position and range of the joint portion and the moisture permeable region vary depending on the entry range of the wing portion 5 and the entry component. It is preferable that the moisture permeable region is arranged at least corresponding to the arrangement position of the indicator 6 or the liquid diffusable sheet 7. In the first embodiment, a moisture permeable region is formed at least at the arrangement position of the marker region 9 near the inner end where the wing portion 5 enters the absorption main body portion 10a. The arrangement position and range of the joint portion will be described below with reference to FIGS. 3 to 5 together with a preferable member structure in the entrance portion of the wing portion 5. The following description is made with reference to FIGS. 3 to 5 with respect to the portion related to the left wing portion 5 in FIG. 1, but is the same except that the portion related to the right wing portion 5 is also symmetrical (described later). The same applies to the second and third embodiments). In addition, when it says the entrance part of the wing part 5, as above-mentioned, not only the part into which the whole structural member entered but the part into which only the one part structural member entered also means.

FIG. 3 is an enlarged cross-sectional view taken along the line III-III in FIG. 1, and is a cross-sectional view of a marker region where the liquid diffusable sheet 7 is disposed. FIG. 4 is an enlarged cross-sectional view taken along the line IV-IV in FIG. 1, and is a cross-sectional view of a liquid hardly diffusible region where the liquid diffusable sheet 7 is not disposed. FIG. 5 is a partially enlarged plan view schematically showing the periphery of a portion where the wing portion on the left side of FIG. 1 and the wing portion of the absorption main body portion enter, and the arrangement positions of the joint portion and the moisture permeable region will be described. It is a figure for doing. In FIGS. 3 to 5, the region g ₁ (region g ₁₁ and region g ₁₂ ) and region g ₂ (region g ₂₁ and region g ₂₂ ) will be described in the article width direction (X direction). The region g ₁ is a region where the side sheet 4 is laminated with the back sheet 2 via the wing part 5, and is a region where the absorber 3 is not arranged. More specifically, the region g ₁₁ is a base region of the wing part 5, and the region g ₁₂ is a region connecting the base region of the wing part 5 of the region ₁₁ to the side edge of the absorber 3. On the other hand, the area g ₂ is a near width direction (X-direction) side edges of the skin of the absorbent body 3 contacting side, overlapping the region where the three-dimensional gathers is arranged to be formed from the side sheet 4. More specifically, the region g ₂₁ is a base region of a three-dimensional gather formed from the side sheets 4, and the region g ₂₂ extends further inward in the width direction than the region g ₂₁ and forms a leak-proof cuff. It is an area up to 41.

First, a preferable member arrangement will be described with reference to FIGS. Region g ₂ is a portion to be a so-called breakwater to prevent side leakage of the liquid by the upright three-dimensional gathers. The liquid diffusive sheet 7 is arranged on the skin contact surface side of the absorbent body 3 in this region g ₂ , particularly in the region g _{22, so} that the liquid to be diffused outward in the width direction of the absorbent body 3 is captured at a good timing. Then, it can be guided to the indicator 6. Therefore the region g ₂₂ of the first embodiment, (see FIGS. 3 and 5) in the indicator area 9 of the wing 5, the liquid diffusing sheet 7 with the face sheet 51 Article 4, directly in contact with the absorbent core 3 placed Has been. Furthermore, the liquid diffusive sheet 7 is accompanied by the indicator 6 and makes it easy to produce discoloration. Alternatively not limited to this embodiment, the back sheet 52 of the wing portions 5 together with the liquid拡性sheet 7 may be provided a number of partial holes is extended to a region g _22. In this case, it is possible to adjust so as to suppress the liquid diffusion of the liquid more effectively. Further, the front sheet 51 of the wing portions 5 may cover the skin contact surface side of the liquid-diffusive sheet 7 extends to a region g _22, it may remain in the region g _21. Face sheet 51 as in the present embodiment 1 is that which extends to the region g _22, preferably so may inhibit liquid return to the top sheet 1 side of the liquid.
The region g ₂₁ is an area where the side sheet 4 and the topsheet 1 as the base region of the standing gathers are securely bonded and fixed at the joint 87 by adhesive or the like. Thus in the region g ₂₁ of the first embodiment, (see FIGS. 3 and 5) in the indicator area 9 of the wing portions 5, the front side of the water repellent sheet 51 and the liquid-diffusing sheet 7 constituting the wing portions 5 are stacked It is a structure that retains leakproofness. Accordingly, it is preferable that the liquid guided by the liquid diffusive sheet 7 is not unnecessarily leaked to the skin contact surface side. In the present embodiment 1, the region g ₂₁ not disposed backsheet 52 waterproof wing portion 5 is liquid-diffusive sheet 7 is easy to capture and absorb body 3 contact with the liquid From the viewpoint of leakage prevention, the back sheet 52 may be disposed in this region as necessary. On the other hand, in the region g ₂₁ and g _22, (see FIGS. 4 and 5) the liquid-diffusing sheet 7 In the liquid flame diffusion region 8 of the wing portions 5 which are not provided, only the front sheet 51 of water-repellent topsheet 1 absorber 3 is interposed so as to suppress the diffusion of the liquid.

The region g ₁ is a region located on the outer side in the width direction from the side edge of the absorber 3. In this region g ₁ , it is preferable that the movement of the liquid is extremely limited from the viewpoint of preventing the lateral leakage of the liquid. Therefore, in any region of the region g ₁₁ and the region g _12, in indicator area 9 of the wing portions 5 (see FIG. 3 and 5), the back sheet of the waterproof liquid diffusive sheet 7 with the face sheet 51 of water-repellent The laminated structure is sandwiched by 52 and covered with a water-repellent side sheet 4 and a waterproof back sheet 2. On the other hand, in the liquid non-diffusible region 8 of the wing portion 5 in the region g ₁ (see FIGS. 4 and 5), the front side sheet 51 and the back side sheet 52 are arranged in a hydrophobic bonding form.

Next, a preferred joining structure will be described with reference to FIG. In FIG. 5, the above-mentioned region g ₁ (region g ₁₁ and region g ₁₂ ) and region g ₂ (region g ₂₁ and region g ₂₂ ) are shown in correspondence with FIGS. The four marked areas 9 composed of the indicator 6 and the liquid diffusive sheet 7 are arranged in the width direction (X direction) with the front side sheet 51 at intervals in the vertical direction (Y direction). The indicator area 9 traverses an area _{g 1} and _{g 2,} the end portion is extends to a region _{g 22.} With respect to such a structure, from the viewpoint of the fixing property of the wing part 5 and the liquid leakage preventing property, at least the region g ₂₂ is joined within the range covering the vertical width (Y direction) maximum width of the entering portion of the wing part 5. It is preferable that a part is formed.

First, Example 1 will be described based on Embodiment 1. In the urine collecting pad 10, the joint portion 100 is formed in the region g ₂₂ . In the joint portion 100, moisture permeable regions 91 are formed at four locations in the position of the marker region 9 including the liquid diffusible sheet 7 from the viewpoint of fixability of the wing portion 5 and liquid leakage prevention property as well as liquid uptake. ing. More specifically, the moisture permeable region 91 is formed in a region intermittently extending in the longitudinal direction (Y direction) corresponding to the labeling region 9 at the position in the width direction (X direction) that is the region g ₂₂ that has entered the absorber 3 most. Has been. In other words, the joint portion 100 is located at the position of the region g _{22 serving} as a liquid intake port, and the contact between the diffusible sheet 7 and the liquid is not inhibited by providing the moisture permeable region 91. As a result, while the wing part 5 is firmly fixed at a part other than the moisture permeable region 91 of the joint part 100, the liquid is captured at a timing at the absorber-side end of the liquid diffusable sheet 7, and the liquid is supplied to the indicator 6. Can be guided. When this is viewed as a joint structure between members in the cross section in the thickness direction of the urine pad 10, the following is obtained.

Looking at this junction 100 in the thickness direction, first (see FIG. 3) in the indicator area 9 of the wing 5, the topsheet 1 of the joint 101 (absorber body portion 10a of the region _{g 22} and wing portions 5 of the face sheet 51 a joint) with a junction 102 of the region g ₂₂ (junction between the liquid-diffusing sheet 7 and the absorber 3). Further, (see FIG. 4) In the liquid flame diffusion region 8 of the wing 5, there at the junction 103 of the region g ₂₂ (junction between the topsheet 1 and the face sheet 51 of the wing portions 5 of the absorbent body portion 10a) a junction 104 of the region _{g 22} (junction with the face sheet 51 and the absorbent body 3). In the joint portion 100, the moisture permeable region 91 is formed at the joint portion 102 (joint portion between the liquid diffusable sheet 7 and the absorber 3) in the labeling region 9, and the other joint portions 101, 103, and 104 are fixed. It is firmly joined and fixed from the standpoint of safety and liquid leakage. In the liquid non-diffusible region 8 shown in FIG. 4, the contact portion of the front sheet 51 and the back sheet 52 has a hydrophobic bonding form (hydrophobic adhesive, heat seal processing, ultrasonic seal processing as described above). Etc.). As described above, the bonding part 100 is formed by partially fusing members laminated by heating and pressurizing processes such as bonding between members using a hot melt adhesive, embossing, heat sealing, ultrasonic sealing, and the like. Can be used as a joint. However, since the joint portions 101 to 104 are joints including the liquid-permeable surface sheet 1 and the liquid-absorbing / retaining absorbent body 3, from the viewpoint of liquid leakage prevention and liquid absorbability, the joint is not formed into a film. Preferably it is. For example, it is preferable to perform the embossing or the like so as not to form a film between the members by using an adhesive.

  And the formation method of the junction part 102 used as the moisture permeable area | region 91 is a joining form which a liquid can pass in order to ensure the liquid diffusion from the absorption main body part 10a to the wing part 5 by the liquid diffusable sheet 7. It is preferable. For example, (1) the basis weight of the adhesive of the joint portion 102 is set to be weak adhesion smaller than other joint portions (strongly bonded portions), and the joint portions 101, 103, and 104 are strongly bonded. 102 is made non-adhesive, (3) the joint portion 102 is easily soluble in water using a water-soluble adhesive material, and the joint portions 101, 103, and 104 are hardly soluble in water using a water-insoluble adhesive material. Can be mentioned.

In the case where the basis weight of the adhesive of the joint portion 102 of (1) is made smaller than that of other joint portions, the basis weight of the adhesive of the joint portion 102 is 0.1 to 9 g / m ² , particularly 0.5. ˜8 g / m ² is preferable from the viewpoint of allowing the liquid to pass while maintaining the bonding strength between the wing part 5 and the absorption main body part 10a. In contrast, it is preferred that the basis weight of the adhesive joint 101, 103 and 104 and 0.5~17g / ^{m 2,} and even more preferably from 1 to 15 g / ^{m 2.} In addition, as a method of applying the adhesive, a method of applying the hot melt adhesive roughly by spiral coating, a method of applying the hot melt adhesive in a fiber shape by curtain spray coating, and applying a plurality of beads in a bead shape The method etc. to do can be employ | adopted. In this case, it is preferable from the viewpoint of liquid passage that the width of the joint is reduced. Further, the spiral shape is preferable since it is easy to achieve a joint strength. In particular, it is preferable to combine the basis weight and the spiral.

In the case where the joint portion 102 of (3) is easily soluble in water using a water-soluble adhesive material, as the water-soluble adhesive material, it is also possible to use a pressure-sensitive adhesive such as polyvinyl alcohol or starch-based adhesive material. As the construction method, it is preferable to use a method of rough coating by spiral coating, etc., since it can be easily dissolved with a very small amount of liquid. When this water-solubility or water-solubility is used, the degree is that the joint is peeled off or a gap is formed by contact with the liquid or penetration of the liquid from the viewpoints of fixability, leakage prevention and liquid uptake. Preferably there is. The basis weight of the water-soluble adhesive material, preferably ^{0.1~9g / cm 2, 0.5~8g / cm} 2 is sufficient bonding strength before contact with body fluids, the after contact with body fluids It is more preferable because easy dissociation of joining is easy to achieve.
Further, when the joint portions 101, 103, and 104 are made to be hardly soluble using a water-insoluble adhesive material, it is preferable to use a resin-based adhesive as the water-insoluble adhesive material, and a hydrophobic adhesive as a coating method. It is preferable to use a method of coating the agent in a bead shape. When this poorly water-soluble or water-insoluble, the degree is preferably such that the joint is not peeled off by contact with the liquid. The basis weight of the water-insoluble adhesive material, preferably 0.5~17g / cm ^2, more preferably 5 to 15 g / cm ^2.

When the joint 102 of (1) is weakly bonded or when the joint 102 of (2) is not bonded, it is not only a method of not applying an adhesive to the joint 102 but also a method by embossing. Also good. Specifically, the joint 100 Oite formed longitudinally region g _22, and integrated with crimped liquid flame diffusion region 8 of the wing portions 5 (see FIGS. 4 and 5), while the indicator area 9 (see FIGS. 3 and 5) may be non-compressed, or may be weakly crimped to such an extent that the movement of the liquid between the liquid diffusable sheet 7 and the absorber 3 is not hindered.
When embossing is used, in the liquid diffusible region 8 of the wing portion 5 (see FIG. 4), the top sheet 1, the front side sheet 51, the back side sheet 52 and the absorber 3 including the joint portions 103 and 104 are integrated. Since it is firmly crimped and joined, the fixing property and the liquid leakage prevention property between the wing part 5 and the absorption main body part 10a become strong, which is preferable. However, as described above, it is preferable that the film is not formed into a film. From this point of view, the degree of embossment in the hard-to-liquid diffusible region 8 preferably ranges from 20 to 80% of the product thickness, and particularly preferably from 30 to 75%. By setting it to the above lower limit or more, a sufficient difference in thickness occurs between the hard-to-liquid diffusible region 8 and the labeling region 9, and it becomes easy to guide the liquid to the labeling region 9. It becomes a thing with a favorable feeling of use at the time of use in which crystallization and hardening were suppressed. Further, the embossing is preferably performed after fixing the joint portions 101, 103, and 104 with the above-described adhesive from the viewpoint of fixability and leakage prevention.
On the other hand, in the label | marker area | region 9 (refer FIG. 3), it is preferable that the degree of the embossing made into weak press bonding is 2 to 40% of a product thickness, and it is preferable that it is 5 to 20%. By setting it to the above lower limit or more, a difference in thickness occurs between the liquid difficulty diffusible region 8 and the labeling region 9, and it becomes easy to guide the liquid to the labeling region 9. There is no curing and the wearing feeling during use is good.
In addition, it is preferable that the difference of the degree of each embossing of strong pressure bonding and weak pressure bonding is 5 to 75%, particularly 10 to 60% in terms of product thickness.

Further joint structure of the joint portion 100 includes a wing portion 5 and an absorbent body portion 10a as to prevent fixed leakage may be formed only in the region g _22, further joint same joint structure is in the region g ₂₁ 110 may be formed (see FIG. 5). Or the junction part 100 and the junction part 110 may be formed as what was continued. The joining portion 100 and the joint 110 may be formed to match the width direction of each of the regions g ₂₂ and g ₂₁ (X direction) may be narrower than that.

As described above, the region g _{21 in} which the joint portion 110 is formed is a region where the side sheet 4 and the topsheet 1 are firmly joined and fixed by the joint portion 87 made of an adhesive or the like as the base region of the three-dimensional gather. Therefore, while providing a moisture transmissive region 91 also, in view of enhancing the leakproofness of the region g _21, the bonding strength of the joint 110 preferably made higher than the joint 100. Specifically, when the joint portion 110 is viewed in the thickness direction, the joint portion 111 (the joint between the top sheet 1 of the absorbent main body portion 10a and the front side sheet 51 of the wing portion 5) in the marker region 9 (see FIG. 3) of the wing portion 5 is observed. parts), the junction between the face sheet 51 of the joint 113 (absorber body portion 10a topsheet 1 and the wing portions 5 of the region g ₂₁ in the liquid flame diffusion region 8 of the wing portions 5 (see FIG. 4)), and joint 114 (joint between the face sheet 51 and the absorbent body 3) is to the strong bonding of the junction 101, 103 and 104 at the junction 100 of the region _{g 22.} On the other hand, (the junction between the liquid-diffusing sheet 7 and the absorbent body 3) junction 112 of the region _{g 21} is a moisture permeable region 91 in the same manner as the junction 102 of the region _{g 22.} In combination with such bonded with strength or non-bonding of the bonding strength, while maintaining the fixity and Ekibo seborrheic, when forming a moisture permeable region 91, the junction 101 to 104 of the region g ₂₂ and region The joint strength ratio of the joint portions 111 to 114 of g ₂₁ is 102 joint portion <112 joint portion ≦ 101 joint portion ≦ 103 joint portion ≦ 104 joint portion <111 joint portion ≦ 113 joint portion ≦ 114 joint portion. preferable.

  In the case where the joint portion is provided by a combination of strong and weak joints, the joint strength of the liquid diffusible region 8 is preferably 500 to 3000 cN / 30 mm, particularly 500 to 1500 cN / 30 mm. On the other hand, the bonding strength of the moisture permeable region 91 is preferably 50 to 500 cN / 30 mm, particularly 50 to 250 cN / 30 mm. The joint strength of the whole joint is preferably 500 to 2500 cN / 30 mm. The method for measuring the bonding strength was to cut each sample into a suitable size and use it as a sample. The obtained sample was measured for 180 ° peel strength at 300 mm / min using a tensile tester, and this was 30 mm in width. Convert to. In addition, about a strong junction part and a weak junction part, you may measure using the wide sample produced on the same conditions as each junction part artificially.

In addition to the joint 100 and 110, of the same joint structure and the joining portion 100 may be formed as a joining portion 130 in the region g ₁₁ (or not shown, joined as similar joint structure joint 130 part 120 may be formed in a region _{g 12).} In this case, the region g ₁ including the regions g ₁₁ and g ₁₂ is a region where the absorber 3 is not disposed as described above, and is a region from the base region of the wing part 5 to the side edge of the absorber 3. Therefore, this is the region where the most leak-proof property is required. Since the joining portion 130 (or the joining portion 120 in addition thereto) in this region does not have the absorber 3, it is also preferable that the joining portion 130 is formed into a strong joint by embossing, heat sealing, or ultrasonic sealing to integrate the members. . Specifically, when the joint portion 130 is viewed in the thickness direction, the side sheet 4 of the absorbent main body portion 10a, the front side sheet 51 of the wing portion 5 and the back side sheet 52 in the liquid diffusibility region 8 of the wing portion 5 (see FIG. 4). In addition, it is preferable that the strong bonding portion 131 is formed by integrating up to the back sheet 2 of the absorption main body portion 10a. Further, the side sheet 4, the wing part 5 (the front sheet 51, the indicator 6, the liquid diffusible sheet 7, and the back sheet 52) of the absorbent main body 10a in the labeling region 9 (see FIG. 3) of the wing part 5, and the absorbent main body The back sheet 2 of the portion 10a is preferably a weak joint 132 that is integrated to the extent that the liquid diffusibility of the liquid diffusible sheet 7 is not impaired. The weakly bonded portion 132 is a moisture permeable region 91 that does not hinder the liquid drawing property of the liquid diffusable sheet 7. As a method for forming the strong joint 131, a hydrophobic adhesive, heat sealing, ultrasonic sealing, or the like is preferable.

Next, Example 2 of the joint part including the moisture permeable region of the present invention will be described with reference to FIGS.
In the second embodiment, unlike the first embodiment described above, the entire joint portion 100 (see FIG. 5) is a moisture permeable region, and the joint portion 110 (or the joint portions 120 and 130) (see FIG. 5) is a strong joint. It is the junction structure used as a part. Making the entire joint 100 a moisture permeable region means that the joints 101 to 104 (see FIGS. 3 and 4) are reduced in the basis weight of the adhesive (1) or reduced in pressure as described above. It can be formed by weakening the strength or weakening the joint strength, (2) making it a non-joined part, and (3) making it water-soluble using a water-soluble adhesive material.

In the second embodiment, the entire bonding portion 110 (or the bonding portions 120 and 130) is bonded to the bonding portion 100 which is a moisture permeable region in order to increase the bonding strength from the viewpoint of fixability and liquid leakage prevention. ing. Examples of the method of strong bonding include increasing the application basis weight of the adhesive, increasing the pressure bonding strength such as embossing and heat sealing to form a film, or making it poorly water-soluble using a water-insoluble adhesive material. In Example 2, since the end portion of the liquid diffusable sheet 7 in the joint portion 100 can take in the liquid more strongly, the joint of the joint portion 110 (or the joint portions 120 and 130) is bonded to the liquid diffusible sheet 7. It is also possible to achieve a bonding in which the drawability of the liquid is somewhat less than that of the bonding portion 100. However, the bonding strength of the bonding portion 110 (or the bonding portions 120 and 130) needs to be such that the liquid drawing property of the liquid diffusable sheet 7 is not completely hindered and the color can be changed throughout the indicator 6. . From this viewpoint, preferably 0.1~9g / ^{m 2} in basis weight of the adhesive, more preferably 0.5 to 8 g / ^{m 2.} In the case of pressure bonding such as embossing or heat sealing, 2 to 40% of the product thickness is preferable, and 5 to 20% is more preferable.

Next, with reference to FIG. 6, the use state of the urine pad 10 will be described, and a method for detecting liquid excretion by the indicator 6 of the wing part 5 will be described. 6 is an enlarged cross-sectional view taken along the line VI-VI in FIG. 1, (a) shows a state in which the wing portion before wearing is extended, and (b) shows a state in which the wing portion is folded and fixed to the clothes. Show. In addition, in order to demonstrate the relationship between the wing | wing part 5 and the back surface sheet 2 in FIG.6 (b), the clothing w was shown with the dashed-two dotted line.
When the urine collection pad 10 is used with the urine collection pad 10 used, the urine collection pad 10 in the unfolded state shown in FIG. 6A is directed toward the inside in the article width direction along the wing base end position 5t or its peripheral position. And it bends to the side where the back sheet 2 exists, and is fixed with the adhesive 53 so that the crotch part of the clothing w which is an outer wearing article is caught. This fixed state is the use state of the urine pad, and as shown in FIG. 6 (b), the indicator 6 of the wing part 5 and the absorbent body 3 in the absorbent main body part 10a are stacked in the thickness direction. Become.

  In the first embodiment, the front side sheet 51 is reversed and disposed on the non-skin contact surface side in the mounted state. Since the front side sheet 51 is positioned outside the clothing or the like, the visual change of the indicator 6 can be recognized through the front side sheet 51 of the wing portion 5 and the outside of the clothing w. As described above, the liquid diffusable sheet 7 coated with the indicator 6 reaches the skin contact surface side of the absorbent body 3 inside the absorbent main body 10a, and is bonded to the absorbent main body 10a without hindering the liquid diffusion function. Has been. Therefore, when the excretory liquid is absorbed from the top sheet 1 to the absorber 3 and diffused in the width direction, the liquid is captured by the liquid diffusive sheet 7. Then, the liquid is accurately delivered to the indicator 6 and the indicator 6 is discolored. That is, it is possible to recognize that excreted urine or the like has been absorbed and held in the absorbent body 3 even with the urine collecting pad 10 attached to the clothes w. As a result, the urine collecting pad can be replaced in a timely manner before urine leaks. In the urine collection pad according to the first embodiment, it is not necessary to provide a hole for visual recognition in the absorbent body 3 as in the prior art, and it is not necessary to deteriorate the absorbent performance of the absorbent body. Moreover, in the urine collection pad 10 of this Embodiment 1, by providing the wing parts 5 and 5, the said crotch part C including the wearer's urination point p (refer FIG. 2) can be fixed firmly, and gap | shift can be suppressed. Here, the urination point p means a region where the urine is excreted when the wearer wears the urine collecting pad 10 and its periphery, and is a portion mainly having the crotch C as a center. If the overhang | projection part of this invention is distribute | arranged so that the area | region extended outward from the urination point p regarding a width direction may be arranged, it will be easy to obtain the visual change of a timely indicator. In the first embodiment, the wing portions 5 and 5 are disposed outward in the width direction of the crotch portion C including the urination point.

  The liquid diffusing performance of the liquid diffusing sheet 7 is indicated by the Klem water absorption height obtained by the measurement method described later. From the viewpoint of propagating the liquid to the wing part 5 quickly and accurately, the width of the Klem water absorption in the width direction is preferably 25 mm or more, more preferably 25 mm to 100 mm, and preferably 35 mm to 80 mm. Further preferred. By disposing the liquid diffusive sheet 72 having excellent liquid diffusivity in this manner, liquid diffusion in the width direction can be easily and appropriately guided and effective in changing the indicator 6. In order to effectively diffuse the liquid in the width direction, the liquid can be reliably transmitted to the indicator of the wing part by disposing a rectangular liquid diffusive sheet in the crotch part C in the vicinity of the excretion point.

  In the first embodiment, it is preferable that the front side sheet 51 of the wing portion 5 is visible to the visual change (discoloration, color disappearance, color appearance) of the indicator 6. As an index of transparency, opacity measured according to JIS P8138 is preferably 50% or less, more preferably 40% or less, and further preferably 30% or less. A method for measuring the opacity will be described later. In the first embodiment, the front sheet 51 is configured to join one sheet material to the side sheet 4, but instead of this, it is one of the sheet materials such as the side sheet 4 constituting the absorbent main body 10a. The portion may be extended to form the front side sheet 51, and a process of partially reducing the opacity may be performed. The first embodiment is preferably a napkin or a urine pad used by being attached to an underwear or a diaper cover, and the underwear or the diaper cover preferably has moisture permeability that does not impede the permeation of vapor.

In the first embodiment, the degree of waterproofness of the back sheet 52 of the wing part 5 is preferably 100 mm or more, more preferably 500 mm or more in terms of water pressure resistance, from the viewpoint of sufficiently preventing liquid permeation. Further, when the back sheet 2 or the back sheet portion 52 is moisture permeable, the degree thereof is sufficient to cause the discoloration of the indicator and maintain waterproofness, and the diaper inside the diaper and the wearer's skin to be fogged accordingly. from the viewpoint of preventing ^{the, 0.5~4.0g / (100cm 2 · h} ) are ^{preferred, 1.0~2.5g / (100cm 2 · h} ) is more preferred. By being in this range, the liquid itself reaching the back sheet 2 does not pass but only the vapor can pass. Further, although the vapor itself passes through the back side seat portion 52 of the wing portion 5, moisture condensed inside the wing portion 5 is prevented from returning to the clothing side without passing through the back side seat portion 52. By doing in this way, adhesion of the water | moisture content to clothing can be suppressed. A method for measuring the waterproofness and moisture permeability of the sheet material will be described later.

(Embodiment 2)
7 and 8 are drawings corresponding to FIGS. 3 and 4 of a urine collecting pad 20 as another embodiment (Embodiment 2) of the present invention. In the urine collection pad 20 of the second embodiment, the liquid diffusable sheet 7 constituting the wing part 5 of the first embodiment extends between the absorber 3 and the back sheet 2. This diffusion sheet can guide the moisture from urination to the indicator 6. For example, when the liquid is gradually absorbed into the absorbent body 3 by repeated urination, the replacement time may be close at a stage where the liquid reaches the non-skin side surface of the absorbent body 3. Therefore, if the liquid can be accurately captured at that time and the indicator 6 can be discolored, it is preferable because the replacement timing of the urine collecting pad 10 can be determined in a timely manner.

In the urine collecting pad 20, the liquid that has reached the non-skin surface side of the absorbent body 3 diffuses in the width direction from the vicinity of the center line in the width direction of the absorbent body 3 by the liquid diffusible sheet 7 of the side sheet lower flat portion 42. To the vicinity of the joining end k of the sheet material. This moved the liquid passes between the face sheet 51 and the back sheet 2 of the base region g ₁₁ wing section 5, visual changes in the indicator 6 in the wing portions 5 give rise.

  As a preferable range in a plan view in which the liquid diffusable sheet 7 is disposed, from the viewpoint of both preferential guidance of the liquid to the indicator 6 and prevention of liquid side leakage by suppressing unnecessary liquid diffusion, The longitudinal end preferably has a width of 50 mm back and forth from the longitudinal center line, and more preferably has a width of 30 mm. Moreover, it is preferable from the viewpoint of the visual change with the good timing of the indicator 6 that it reaches to the width direction center vicinity of the absorber 3 as an edge part inside a width direction. More specifically, the inner edge of the liquid diffusable sheet 7 exists in the width direction inward of the region of the width of 1/3 left and right when the absorber 3 is divided into three in the width direction with the maximum width portion as a reference. It is preferable to do. It is preferable that the said conditions are achieved in the crotch part C of an absorbent article. In addition, the shape of the absorber 3 is a so-called hourglass shape, and the maximum width in the longitudinal direction of the absorber 3 is divided into three parts. It is also possible not to. If there is no part, it is only necessary to satisfy the above conditions in the other part, and if there is no right and left 1/3 region in the crotch part C, in the ventral part or the dorsal part It is sufficient if the above conditions are satisfied. Furthermore, it is preferable to reach the position corresponding to the urination point from the viewpoint of accurately capturing the liquid that is transmitted in the thickness direction of the absorber 3.

  In the second embodiment, the indicator 6 extends to the absorption main body portion 20a, but the indicator 6 may exist only in the wing portion 5. In that case, from the viewpoint of reliably delivering the liquid in a state where the wing portion 5 is bent, the indicator 6 located closest to the absorption body is disposed within a distance of 20 mm from the joint end k (see FIG. 7). In particular, it is preferable to be disposed within 10 mm, more preferably within 2 mm.

In incontinence pad 20, preferably arranged and preferred bonding structure of each member of the wing portions 5 and the absorption body portion 10a including a liquid diffusion sheet 7, as in the first embodiment described above, the area g ₁ and area g ₂ It can be explained separately. This point will be described below with reference to FIGS.

First, a preferable member arrangement will be described. The region g ₂ is a region around the side portion of the absorber 3. The liquid diffusive sheet 7 is arranged on the non-skin contact surface side of the absorbent body 3 in this region g ₂ , particularly the region g ₂₂ , so that it diffuses outward in the width direction from the non-skin contact surface side of the absorbent body 3. The liquid to be tried can be captured in a timely manner and guided to the indicator 6. Further, when the liquid diffusive sheet 7 is disposed to the vicinity of the center in the width direction of the absorbent body 3 beyond the region g _22, among the large quantities captured body fluid urination point portion of the absorbent body 3, the non-skin-contacting side Since the liquid which reached | attained can be trapped earlier, it is preferable. Therefore, in the second embodiment, the four liquid diffusable sheets 7 are not accompanied by the front side sheet 51 and the back side sheet 52 in the labeling region 9 of the wing part 5 (see FIGS. 7 and 9), and extend to the vicinity of the center in the width direction. It is supposed to be arranged. As a result, the liquid diffusive sheet 7 is in direct contact with the absorbent body 3 to easily capture the liquid, and in the relationship with the back sheet 2, the body fluid is easily diffused in the surface direction, so that the body fluid is placed in one place. Is difficult to concentrate, and it is difficult for the body fluid to ooze out from the back sheet 2, which is preferable because it is easy to maintain a high leak-proof property. Alternatively not limited to this embodiment, the case of extending the face sheet 51 to the region g _22, may be provided a number of partial holes to allow capture of accurate liquid. In this case, adjustment can be made to more effectively suppress the diffusion of the liquid. Furthermore, if the backsheet 52 of the wing portions 5 causes extend to regions g _22, may be integrally formed with the backsheet 2.
The region g ₂₁ is a side edge region of the absorber 3 and is a region adjacent to the region g ₁ without the absorber 3. Therefore, it is preferable not to unnecessarily spreading the liquid drawn by a liquid diffusion sheet 7 in the region g _1. In the second embodiment, the water-repellent front side sheet 51 and the liquid diffusive sheet 7 constituting the wing part 5 are laminated and disposed in the marker region 9 of the wing part 5 (see FIGS. 7 and 9). Is a structure that holds On the other hand, in the liquid non-diffusible region 8 of the wing part 5 where the liquid diffusion sheet 7 is not disposed (see FIGS. 8 and 9), only the water repellent front side sheet 51 and the waterproof back side sheet 52 are in a hydrophobic bonding form. to a region _{g 22} and extends g ₂₁ does not extend.

The region g ₁ is a region located on the outer side in the width direction from the side edge of the absorber 3. In this region g ₁ , it is preferable that the movement of the liquid is extremely limited from the viewpoint of preventing the lateral leakage of the liquid. Therefore, in any region of the region g ₁₁ and the region g _12, in indicator area 9 of the wing portions 5 (see FIGS. 7 and 9), the back sheet of the waterproof liquid diffusive sheet 7 with the face sheet 51 of water-repellent The laminated structure is preferably sandwiched by 52 and covered with the water-repellent side sheet 4 and the waterproof back sheet 2. On the other hand, in the region g ₁ where the liquid diffusible region 8 of the wing part 5 where the liquid diffusion sheet 7 is not disposed (see FIGS. 8 and 9), the water-repellent front sheet 51 and the waterproof back sheet 52 are hydrophobic. It is arranged in a joined form.

Next, a preferable joining structure will be described. Also in the second embodiment, the wing portion 5 and the absorption main body portion 20a are joined by a joining portion along the longitudinal direction. The bonding portion can form a moisture permeable region by using the above-described preferable bonding structure of the first embodiment (Examples 1 and 2). Thereby, the uptake | capture property of a liquid can be ensured, maintaining the fixed property of the wing part 5, and liquid leak-proof property.
In the second embodiment, as shown in FIGS. 7 and 9, the joint portion 200 is disposed in alignment with the marker region 9 extending from the region g ₂₂ to the vicinity of the center in the width direction of the absorber 3. In the joint portion 200, four moisture permeable regions 92 are formed at the position of the marker region 9. When viewed in the thickness direction, in the marker region 9 of the wing part 5 (see FIGS. 7 and 9), the joint part 201 (joint part between the liquid diffusable sheet 7 and the absorber 3) and the joint part 202 (liquid diffusible sheet 7). And the back surface sheet 2 of the absorption main body portion 10a) is a moisture permeable region 92. On the other hand, in the liquid difficulty diffusibility area | region 8 of the wing part 5, the structural member of the wing part 5 is not distribute | arranged, but the junction part is not formed. That is, the joining form of Embodiment 2 also serves as Examples 1 and 2 of Embodiment 1 described above. Furthermore, the joints 210, 220, and 230 in the regions g ₂₁ , g ₁₂ and g ₁₁ can be combined by adopting those of the first embodiment.

(Embodiment 3)
Next, the member arrangement and joining structure of the urine pad 20 including the wing part 5 without the liquid diffusive sheet 7 will be described with reference to FIGS. FIG. 10 is a plan view schematically showing a state in which a urine collecting pad as another embodiment (Embodiment 3) of the present invention is developed and extended. FIG. 11 is an enlarged cross-sectional view taken along line XI-XI in FIG. In addition, in FIG. 10, illustration by the broken line (hidden line) is abbreviate | omitted in the external shape of a surface sheet, and only the absorber 3 enclosed by this is shown with the broken line. Moreover, in FIG. 11, the covering sheet of the absorber 3 is omitted. In the urine collecting pad 30 of Embodiment 3, the wing part 5 includes a water-repellent front side sheet 51 and a back side sheet part 52 formed by extending the back sheet 2 of the absorbent main body part 30a outward in the width direction (X direction). It consists of Furthermore, the indicator 6 is directly coated between the front sheet 51 and the back sheet portion 52 and does not have the liquid diffusion sheet 7. Face sheet 51 of the wing portions 5, the absorption body portion 30a side of which is joined enters the joint end of the base region g _11, indicator 6 is disposed from the width direction outside it. That is, the wing portion 5 is disposed so as not to contact the absorber 3. In the absorbent main body 30a, the water-repellent side sheet 4 of the first embodiment wraps around the absorbent body 3 in the width direction and covers the entire surface of the absorbent body 3 on the non-skin surface side. A liquid diffusion space 71 for diffusing the liquid in the width direction is disposed between the absorber 3 and the waterproof back sheet 2. Further, the water-repellent side sheet lower flat portion 42 has a liquid permeation region v in which the liquid permeability is partially increased by a hydrophilic treatment or the like in the vicinity of the center line in the width direction of the absorber, and the liquid diffusion from the absorber 3 It becomes a passage for the liquid to the space 71. As a result, the liquid that has reached the non-skin surface side of the absorbent body 3 passes through the liquid easy transmission region v of the side sheet lower plane part 42 from the vicinity of the center line in the width direction of the absorbent body 3, and further passes through the liquid diffusion space 71. The liquid spreads in the space, diffuses in the width direction, and moves to the vicinity of the joining end k of the sheet material. The moved liquid passes between the front sheet 51 and the back sheet 2 in the base region g ₁₁ and contacts the indicator 6 in the wing part 5. A visual change occurs in the indicator 6 by contact with the liquid.

In incontinence pad 30, the wing portions 5 intrudes into the absorption body portion 30a in the wing basal area _{g 11.} Therefore, the joint portion 300 that fixes both is disposed in the vertical direction (Y direction) only in the region ₁₁ . In this Embodiment 3, the junction part 300 is made into the same joining form as the junction part 100 in Example 1 of Embodiment 1. FIG. In other words, the moisture permeable regions 93 are formed at intervals in the vertical direction (Y direction) at four locations of the joint portion 300 where the indicator 6 is disposed. The moisture permeable region 93 can serve as a liquid intake and guide the liquid from the liquid diffusion space 71 to the indicator 6. Further, the wing portion 5 and the absorption main body portion 30a are firmly fixed at a portion other than the moisture permeable region 93 of the joint portion 300 to enhance the liquid leakage prevention property.

The liquid permeation region v is formed by a method of increasing the liquid permeability by providing a large number of holes, or a method of imparting a hydrophilic agent (such as a hydrophilic surfactant) to the water repellent material. A method is mentioned. The urine collecting pad 20 of the present embodiment can effectively diffuse the liquid in the width direction while suppressing liquid leakage by such an arrangement of the side sheets 4. In addition, the liquid permeable region v is not limited to the forming method of the second embodiment. For example, the vicinity of the center line in the width direction of the absorbent body 3 may not be covered with the side sheet 4, and the center line in the width direction may be further used. Another hydrophilic sheet material may be arranged in the vicinity.
The liquid diffusion space 71 does not need to be formed before using the urine collection pad. When the product is sold in a package form, even if the space is crushed and the excretion liquid reaches It is sufficient that a space is formed. Further, before use, the material may be fixed by a hydrophilic fixing means, and the fixation between the materials may be released by contact with the excretory fluid. In addition, the liquid diffusion space 71 has a shape in which at least the crotch part C has the entire liquid diffusion space 71 as one gap, a shape in which a plurality of elongated passages extending in the width direction in the liquid diffusion space 71 are disposed, and the like. However, it is preferable to use a passage extending in the width direction of the plurality of strips from the viewpoint of suppressing the feeling of floating of the crotch portion during mounting. The method for forming the liquid diffusion space 71 is not particularly limited as long as it has this function, and various methods can be adopted.For example, a method of providing a non-adhesive portion of both the sheet materials may be used. Method of forming, hot melt bonding between the side sheet lower flat portion 42 and the back sheet 2 by spiral coating to form a liquid diffusion path utilizing capillary force by the adhesive being applied densely You can also.

In the third embodiment, the vertical end of the liquid diffusion space 71 preferably has a width of 50 mm back and forth from the vertical center line, and more preferably a width of 30 mm. In the third embodiment, from the viewpoint of a liquid in a state of bending the wings 5 are reliably transfer, the position of the inner end 6b of the indicator 6, a distance from the joint end k (Distance basal area g ₁₁₎ is 20mm Is preferably within 10 mm, more preferably within 10 mm, and even more preferably within 2 mm.

(Modification of wing part 5)
In any wing part 5 of the first to third embodiments, if the intermittent arrangement of the indicator 6 and the liquid diffusable sheet 7 is on the absorption main body part 10a side, the liquid can be effectively taken in effectively. preferable. Therefore, the planar arrangement in the wing part 5 is not limited to the arrangement in which the four strips are arranged at regular intervals as in the first and second embodiments, and any arrangement can be adopted. For example, as shown in FIG. 12, various shapes such as a shape in which the four indicators 6 and the liquid diffusive sheet 7 are curved on a parabola can be employed.

Hereinafter, the material of the members constituting the urine collecting pads of Embodiments 1 to 3 will be described.
(Liquid diffusion sheet)
Examples of the material for forming the liquid diffusable sheet 7 include ordinary hydrophilic sheets, specifically those containing hydrophilic fibers such as rayon, cotton, and pulp. The diffusion sheet preferably has a Klem water absorption height of 25 mm or more in the width direction from the viewpoint of quickly transmitting body fluid information to the wing part 5. Preferably, the thickness is 25 mm to 100 mm, particularly 35 mm to 80 mm, because body fluid information is quickly and accurately transmitted to the indicator. Examples of the method for controlling the diffusibility include (1) including hydrophilic particles and (2) including hydrophobic fibers in addition to the hydrophilic fibers constituting the sheet. Examples of the hydrophilic particles include silica, titanium oxide, aluminum oxide and the like, and titanium oxide is particularly preferable. In the case of adding hydrophobic fibers, hydrophilic fibers can be contained in an amount of 50% by mass or more, particularly 60% by mass or more, and hydrophobic fibers in an amount of less than 50% by mass, particularly less than 40% by mass. As the hydrophobic fiber, for example, fibers made of various thermoplastic resins can be used. The hydrophilic fibers (nonwoven fabrics) used in the present invention include fibers obtained by subjecting fibers made of a hydrophobic thermoplastic resin to various hydrophilic treatments, and nonwoven fabrics obtained by subjecting a nonwoven fabric made of hydrophobic fibers to various hydrophilization treatments. . Examples of the fiber sheet containing these fibers include spunlace nonwoven fabric, air-through nonwoven fabric, and paper. Specifically, a spunlace nonwoven fabric composed of rayon and polyolefin fibers can be mentioned. The basis weight of these fiber sheets is preferably 15 to 50 g / m ² , particularly preferably 18 to 35 g / m ² .

(Measurement method of the water absorption height of liquid diffusable sheet)
The measurement of the water absorption height of the clem showing the liquid diffusibility of the liquid diffusive sheet 72 can be performed in accordance with the paper and paperboard-water absorption test method-Klem method of JIS P8141. That is, after the liquid diffusive sheet is cut into a strip shape having a width of 20 mm and a length of 200 mm, the longitudinal direction is set to the vertical direction and the portion from the lower end to 15 mm is immersed in water. Measure how much mm was sucked up. This measured value is defined as the Klem water absorption height.

(indicator)
The color indicator contained in the hydrophilic composition constituting the indicator 6 preferably has a pH of 3 to 7 and changes its color. Examples thereof include bromophenol blue, methyl orange, alizarin S, bromocresol green, Examples include, but are not limited to, methyl red and bromocresol purple. Particularly preferred among these color indicators are bromophenol blue, bromocresol green, bromocresol purple, and the like. These color indicators are preferably 0.01 to 50% by mass, more preferably 0.01 to 40% by mass, and still more preferably 0% with respect to the total amount of the hydrophilic composition (acidic compound + color indicator). 0.01 to 1% by mass, most preferably 0.01 to 0.5% by mass. If the amount of the color indicator is less than 0.01% by mass, the color may be thin even if the color is changed and it may be difficult to visually recognize from the outside. If the amount exceeds 50% by mass, the color before the color change of the hydrophilic composition is dark. Since the appearance is not good and the cost may be further increased, it is preferably within the above range.

  In the present invention, from the viewpoint of avoiding discoloration other than a small amount of water or excreted urine under high temperature and high humidity, the hydrophilic composition described in Japanese Patent No. 3558828 is provided with a pH of the hydrophilic composition. An acidic compound that can be maintained and can be maintained such that the pH of the hydrophilic composition does not exceed 4 only by contact with water, and the back sheet portion 52 of the wing portion 5 includes A water-soluble compound that exhibits alkalinity when dissolved in water can also be contained. Moreover, the hydrophilic composition which makes the indicator 6 can also contain the hydrophilic polymer which has adhesiveness further. If the hot melt adhesiveness is imparted to the hydrophilic composition, the bonding and fixing of the front side sheet 51 of the wing part 5 and the liquid diffusable sheet 71 become stronger, and if there is a hot melt coating apparatus, Coating is possible on the top, and the processability is improved. That is, the hydrophilic composition containing the acidic compound, the color indicator, and the hydrophilic polymer functions as a hot melt adhesive. The hydrophilic composition may contain an antioxidant, an ultraviolet absorber and the like in addition to the components described above. These components are preferably contained in an amount of 0.5 to 5% by mass, more preferably 0.5 to 3% by mass, based on the total amount of the hydrophilic composition.

(Front sheet)
As a material of the front side sheet 51 of the wing part 5, it is preferable to use a water-repellent material from the viewpoint of liquid leakage prevention. Examples thereof include a sheet obtained by applying a hot melt adhesive on the surface of a water-repellent nonwoven fabric, a hydrophilic nonwoven fabric, paper, or the like to reduce the liquid permeability, and an olefin film (PE, PP). Further, from the viewpoint of visibility, a sheet (nonwoven fabric or film, or a composite thereof) in which the basis weight, bulk density, and void amount are controlled to such an extent that the color of the indicator can be visually recognized, or a sheet having high light transmittance ( For example, it is possible to use a highly transparent sheet or a sheet partially having holes.
When using a film as a forming material of the front side sheet 51 of the wing part 5, if a porous film having a basis weight of 10 to 40 g / m ² is used, the visual change of the changing agent can be easily recognized from the outside of the diaper and flexible It is preferable because a feeling can be obtained. As the film material, for example, a transparent film can be used. The transparent film is, for example, a transparent film made of a thermoplastic resin such as polyethylene, polyvinyl acetate, ethylene-vinyl acetate copolymer, or a composite film formed by bonding these transparent films, and includes a colorant. Those that are not can be used. Although this film material may be composed of only a highly transparent film, it is preferable to have a laminate structure in which a nonwoven fabric is disposed on the surface side sheet portion. Moreover, you may comprise only a water-repellent nonwoven fabric (in this case, preferably the water pressure-resistant pressure of 100 mm or more). When using a nonwoven fabric as a forming material of the front side sheet | seat 51 of the wing part 5, it is preferable to use the thing of the basic weight and / or thickness from which moderate light transmittance is acquired. The basis weight of the non-woven fabric is preferably 5 to 45 g / m ² , particularly 10 to 40 g / m ² , from the viewpoint of achieving both the recognizability of visual changes and the sensory performance such as texture and touch. Nonwoven fabrics include, for example, a single fiber of thermoplastic resin made of polyolefin such as polyethylene or polypropylene, or polyester such as polyethylene terephthalate, or a composite fiber having a core-sheath type or side-by-side structure using two or more of these resins. Non-woven fabric composed of Moreover, it is preferable to use a non-woven fabric having a high transparency of the ground color and a high whiteness, since the recognition of visual changes is enhanced. However, in the non-woven sheet, in the thickness direction of the wing portion 5, in the overlapping portion with the region where the indicator is arranged, most of the overlapping portion may be white, and in the region other than the overlapping portion, the visual indicator 6 You may print in the range which does not disturb the recognition property of a change.

(Measurement method of transparency of front side sheet 51 of wing part 5)
The index indicating the transparency of the front sheet 51 of the wing portion 5 can be represented by the numerical value of opacity as described above. This opacity is measured according to the method A or B of JIS P8138 using, for example, a spectral color difference meter (SE-2000, 6000, etc.) manufactured by Nippon Denshoku Industries Co., Ltd. and calculated by the following equation: Can do.
Opacity (%) C = (R ₀ / R _0.89 ) × 100
R ₀ : reflectance of the sample when using the backing black plate R _0.89 : reflectance of the sample when using the backing white plate

(Back sheet / Back sheet)
A material for forming the back sheet 52 and the back sheet 2 is not particularly limited as long as it is waterproof. In addition, it is preferable to have moisture permeability from the viewpoint of preventing stuffiness. For example, it is obtained by melt-kneading a hydrophobic thermoplastic resin and a fine inorganic filler made of calcium carbonate or the like or an incompatible organic polymer to form a film, and uniaxially or biaxially stretching the film. A porous film is mentioned. Examples of the thermoplastic resin include polyolefin. Examples of the polyolefin include high to low density polyethylene, linear low density polyethylene, polypropylene, polybutene and the like, and these can be used alone or in combination. Furthermore, it is preferable to employ an appropriate material for the back sheet 52 so as to improve the visibility of the indicator 6. For example, it is preferable that the basis weight of the sheet material and 15~70g / ^{m 2,} and even more preferably from 25 to 50 g / ^{m 2.} The color of the sheet material may be transparent or colored, but depending on the color of the article to be worn such as underwear (especially colored such as beige preferred by older women as the color of underwear) From the viewpoint of avoiding difficulty in visually recognizing the color (particularly, the color after discoloration), it is preferable that the color is light, particularly light gray or white. When the sheet material having such a color arrangement is adopted for the back side sheet portion 52, it is sufficient that the sheet material is disposed at least in a region overlapping with the indicator 6. In addition, in this embodiment, although the back side sheet | seat part 52 is a different member from the back surface sheet 2, the back side sheet 52 may be formed as a part which the back surface sheet 2 extended.

(Measurement of water pressure resistance)
Unless otherwise specified, the measurement of the water pressure resistance indicating the waterproof property of the back sheet 52 and the back sheet 2 is performed according to the waterproof test method for JIS L1092 textiles. The water resistance test (hydrostatic pressure method, method A) shown in JIS is mainly applied to non-breathable textile products. When applying to breathable products, the spray method is applied. To do. However, in the case of an absorbent article, it is unlikely that a liquid load is applied in the form of a spray assuming actual use, but rather it is considered to be in accordance with the conditions of the water resistance test.

(Measurement of moisture permeability)
Unless otherwise specified, the moisture permeability of the sheet material is measured according to the moisture permeability test method for JIS Z0208 moisture-proof packaging material at a temperature condition of 35 ° C.
Specifically, a moisture absorbent (calcium chloride) is first placed in a moisture permeable cup, a test piece cut to a diameter of 70 mm is placed on the mouth of the moisture permeable cup, the packing and ring are fixed with a wing nut, The joint between the wet cup and the sample is sealed with a vinyl adhesive tape to obtain a test specimen. This specimen is left in a constant temperature and humidity apparatus at 35 ± 2 ° C. and 90 ± 5% RH for a predetermined time. After 1 hour, remove the specimen, measure the mass, place it in the thermo-hygrostat again after measurement, take out the mass after 4 hours, measure the mass, and pass the moisture permeability through the sheet (per 1 m ² ) according to the following formula: It is determined as the mass (g) of water vapor. In addition, the preferable numerical range of the above-mentioned moisture permeability is shown as 1 g / 100 cm ² · h = 2400 g / m ² · 24 h.
Moisture permeability (g / m ² · 24h) = (240 × m) / (t · s)
s: Moisture permeable area (cm ² )
t: total time of last two weighing intervals tested (h)
m: Sum of the last two weighing intervals and increased masses tested (mg)

[Adhesive]
Moreover, although the adhesive 53 arrange | positioned by the non-skin side surface of the back side sheet | seat 52 can employ | adopt what is used for this kind of articles | goods, a suitable raw material is employ | adopted from a viewpoint of the visibility improvement of the indicator 6. FIG. be able to. For example, the color of the adhesive 53 is preferably lighter or more transparent than the color after the discoloration of the indicator 6. The light-colored pressure-sensitive adhesive 53 can be formed by applying a hot-melt pressure-sensitive adhesive or the like that forms a transparent film. Examples of the pressure-sensitive adhesive that forms the transparent pressure-sensitive adhesive 53 include styrene-butadiene-styrene (SBS), styrene-ethylene-butadiene-styrene (SEBS), and olefin hot melt. As for the application quantity of the adhesive in the adhesive 53, 10-70 g / m < ² > is preferable.

[Other materials]
As a forming material of the surface sheet 1, the side sheet 4, and the absorber 3, what is normally used for the absorbent article can be used.
The surface sheet 1 is preferably a hydrophilic non-woven fabric, and is a non-woven fabric called an air-through non-woven fabric, a point-bonded non-woven fabric, a spun-bonded non-woven fabric, a spun lace non-woven fabric, or a three-dimensional shaped non-woven fabric. Fibers that have been hydrophilized with polyethylene composite fibers, polyethylene terephthalate and polyethylene composite fibers, and the like are preferred, and those having a basis weight of 15 to 50 g / m ² can be suitably used. Further, a hydrophilic perforated film or a hydrophilic nonwoven fabric may be partially overlapped on the crotch portion of the topsheet 1 on the non-skin surface side of the topsheet 1.
As the side sheet 4, a water-repellent nonwoven fabric is preferable, and specifically, a spunbond nonwoven fabric, a spunbond-meltblown (SM) nonwoven fabric, a spunbond-meltblown-spunbond (SMS) nonwoven fabric, or the like is used. As the elastic member 42 for the three-dimensional gathers of the side sheet 4, a normal elastic member used for this type of article can be used. For example, as a material, synthetic rubber such as styrene-butadiene, butadiene, isoprene, neoprene, natural Examples include rubber, EVA, stretchable polyolefin, polyurethane, etc. The shape of the cross-section is rectangular, square, circular, polygonal or other thread-like or string-like (flat rubber, etc.), or multifilament type thread-like Can be used.

As a material for forming the absorbent body 3, those normally used for absorbent articles can be used. Specifically, for example, as the absorbent core, a fiber aggregate or a combination of this and a polymer water-absorbing polymer can be used. As the fibers constituting the fiber assembly, hydrophilic natural fibers such as pulp fibers, synthetic fibers (preferably subjected to hydrophilic treatment), and the like can be used. The basis weight is not particularly ^limited, preferably ^{150g / m 2 ~500g / m 2} . Moreover, as a covering sheet which coat | covers an absorptive core, what consists of thin papers (thin paper), such as hydrophilic tissue paper, and hydrophilic nonwoven fabrics (composite nonwoven fabrics, such as SMS, SMMS, and SSMS) can be used.

  The case where the overhanging portion has a wing shape has been described as a specific embodiment. The wing-shaped overhanging part (wing part) is highly exposed to the outside of outer-wearing articles such as diapers, underwear, and pad holders, and has good visibility. It is preferable from the viewpoint of fixability to the outer worn article such as. On the other hand, in the present invention, the “overhang portion” is not limited to the wing shape, and may be, for example, one or a plurality of strip shapes protruding outward in the width direction from the absorption main body portion, or a plurality extending in the vertical direction. It may be a bowl shape. The “overhang” was made to be exposed to the outside of the absorbent main body located inside the outer wear article such as diapers, underwear and pad holders that are usually worn on the outside (non-skin side). A part is preferred. However, if the outer wear article is a so-called boxer brief type that extends around the leg to the wearer's thigh, the overhanging part can be folded back to the thigh contact part of the outer wear article Since the visual change of the indicator can be confirmed by rolling the leg opening of the outer wearing article, it is not necessary for the overhanging portion to be exposed to the outside of the outer wearing article. Moreover, although the overhang | projection part was distribute | arranged to the vertical direction center part in the crotch part C of an article in the said embodiment, you may be biased toward the stomach side part or back side part. Furthermore, the overhanging part may be provided on the ventral part F or the dorsal part R.

  The absorbent article of the present invention is not limited to the above embodiment, and may be a combination of the label regions 9 of Embodiments 1 and 2, and the liquid passes through the liquid diffusion mechanism from the absorber. As long as the indicator is changed, the members used in the first and second embodiments may be appropriately replaced and combined. The absorbent article of the present invention is not limited to the urine collection pad in the above embodiment, but may be a deployable disposable diaper or a pants-type disposable diaper for infants or adults, and a sanitary napkin, panty liner or light incontinence. It may be a pad.

DESCRIPTION OF SYMBOLS 1 Top sheet 2 Back sheet 3 Absorber 4 Side sheet 5 Wing part 51 Front side sheet 52 Back side sheet 53 Adhesive 5t Wing base end position 6 Indicator 7 Liquid diffusible sheet 8 Liquid hard diffusible area 9 Marking area 91,92,93 Moisture permeable area 10, 20 Urine pad

Claims (6)

Absorption main body having a liquid-permeable top sheet disposed on the skin contact surface side, a waterproof back sheet disposed on the non-skin contact surface side, and an absorbent body interposed between the two sheets An absorbent article comprising:
The absorbent article has a longitudinal direction in a direction connecting the abdominal side part and the back side part via the crotch part and a width direction intersecting the longitudinal direction, and the absorbent body part is on the inner side surface of the outer wearing article. It is used by placing it,
On both sides of the absorbent main body part, there is an overhanging part that can be folded back to the back sheet side that protrudes outward in the article width direction, and the overhanging part includes a liquid and a liquid-permeable sheet between two layers. It has a configuration in which an indicator part that changes color when touched is arranged,
A member that constitutes the overhanging portion includes an intrusion portion that enters the side of the absorption main body portion, and the intrusion portion and the absorption main body portion are fixed at a joint portion, and the joint portion is an easily water-soluble region. An absorbent article comprising a poorly water-soluble region, wherein the readily water-soluble region is a water-permeable region, and the water-permeable region is capable of guiding liquid to the indicator portion.   The absorbent article according to claim 1, wherein the moisture permeable region is disposed near an inner end of the entering portion. The absorbent article according to claim 1 or 2, wherein a liquid diffusive sheet is disposed in a portion where the indicator portion is present in the overhang portion. In the projecting portion is disposed so as the indicator of the plural rows are in contact with the plural rows the liquid diffusing sheet that corresponds thereto constitutes a label area, part of the overhang portion other than the indicator area The absorbent article according to claim 3 , wherein liquid diffusibility is lower than that of the label region. The absorbent article according to claim 3 or 4 , wherein the liquid diffusive sheet extends to the entering portion. 6. The absorbent article according to any one of claims 1 to 5 , wherein the absorbent article can be used by being disposed inside an outer-wearing article, and the overhanging portion is folded back toward the wearer's thigh and is easily worn externally. Absorbent article according to item.

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