JP2020168213A - Absorbent article - Google Patents

Abstract

To provide an absorbent article capable of holding a urine sensor in a desired position, and facilitating attaching the urine sensor to a desired position and removing the sensor.SOLUTION: An absorbent article comprises a top sheet disposed at a skin-facing side, a rear surface sheet disposed at a non-skin-facing side, and an absorber disposed between both sheets. The absorbent article has a holding area of a urine sensor between a sheet positioned at a side closest to the skin, and the absorber. It is preferable that the sheet positioned at a side closest to the skin is the top sheet, and the top sheet is formed with an opening to take in and out the urine sensor. It is also preferable that the sheet positioned at a side closest to the skin is a skin-side holding sheet arranged at the skin-facing side of the top sheet, and has the holding area of the urine sensor between the top sheet and the skin-side holding sheet.SELECTED DRAWING: Figure 1

Description

The present invention relates to absorbent articles.

In recent years, diapers have been proposed that detect the presence or absence of excretion by the wearer using an excrement detection sensor and analyze the components of excrement. For example, Patent Document 1 discloses a diaper including an inner surface sheet that allows liquid to permeate, an outer surface sheet, an absorber arranged between these sheets, and an excretion detection element that detects excrement. .. It is also disclosed in the same document that this diaper has a recess on the inner surface sheet side for flowing excrement, and an excretion detection element is arranged in the recess.

JP-A-2018-68321

By the way, excretion detection sensors such as urine sensors have different dimensions and appropriate arrangements depending on the purpose. When these urine sensors are applied to the diapers described in Patent Document 1, it becomes difficult to attach the sensors to appropriate positions, and excretion detection and component analysis of excrement may not be performed well. Further, the urine sensor is generally expensive and it is usually used to be reused. However, it is difficult to attach and remove the sensor with the diaper described in Patent Document 1, and it takes time and effort to reuse the sensor. The cost will increase.

Therefore, the present invention relates to an absorbent article that can eliminate the drawbacks of the above-mentioned prior art.

The present invention includes a front surface sheet arranged on the skin facing surface side, a back surface sheet arranged on the non-skin facing surface side, and an absorber arranged between the two sheets.
The present invention provides an absorbent article having a holding region for holding a urine sensor between a sheet located closest to the skin and the absorber.

According to the present invention, there is provided an absorbent article that can hold the urine sensor in a desired position, easily attach the urine sensor to the desired position, and easily remove the sensor.

FIG. 1 (a) is a plan view showing an embodiment of the absorbent article of the present invention, and FIG. 1 (b) is a cross-sectional view taken along line I-I of the absorbent article shown in FIG. 1 (a). Is. 2 (a) to 2 (e) are schematic views showing the morphology of the opening formed in the absorbent article shown in FIG. FIG. 3A is a plan view showing another embodiment of the absorbent article of the present invention, and FIG. 3B is a cross-sectional view taken along line II-II of the absorbent article shown in FIG. 3A. It is a figure. 4 (a) to 4 (c) are schematic views showing the form of the joint row. FIG. 5 (a) is a plan view showing still another embodiment of the absorbent article of the present invention, and FIG. 5 (b) is a line III-III of the absorbent article shown in FIG. 5 (a). It is a sectional view. 6 (a) to 6 (c) are cross-sectional views showing the morphology of the recessed portion in the absorbent article of the present invention. FIG. 7 (a) is a plan view showing still another embodiment of the absorbent article of the present invention, and FIG. 7 (b) is a line IV-IV of the absorbent article shown in FIG. 7 (a). It is a sectional view.

Hereinafter, the present invention will be described based on the preferred embodiment with reference to the drawings. FIG. 1 shows a urine absorbing pad, which is an embodiment of an absorbent article of the present invention. The absorbent article 1 shown in FIG. 1 is arranged between the front surface sheet 2 arranged on the skin facing surface side, the back surface sheet 3 arranged on the non-skin facing surface side, and the front surface sheet 2 and the back surface sheet 3. It is provided with a liquid-retaining absorber 4. The absorbent article 1 may be arranged on the non-skin facing surface side of the back surface sheet 3 and may include an exterior body forming the outer surface of the absorbent article 1.

In the present specification, the "skin facing surface" is a surface that is directed toward the wearer's skin when the absorbent article is worn when focusing on the absorbent article or its constituent members (for example, the absorber 4), and is "non-skin facing surface". The “skin-facing surface” is a surface that faces the wearer's skin when the absorbent article is worn. That is, the skin-facing surface is the surface relatively close to the wearer's skin, and the non-skin-facing surface is the surface relatively far from the wearer's skin. “When worn” refers to a state in which the proper wearing position of the absorbent article is maintained.

As shown in FIG. 1A, the absorbent article 1 has a longitudinal direction X extending from the ventral side of the wearer to the dorsal side via the crotch portion in a direction corresponding to the front-back direction of the wearer, and the longitudinal direction X thereof. It has a width direction Y that is orthogonal to each other. Further, the absorbent article 1 has a shape symmetrical with respect to the longitudinal center line extending in the longitudinal direction X and passing through the central portion in the width direction Y. Further, as shown in FIG. 1 (b), the absorbent article 1 has a thickness direction Z.

The absorbent article 1 has an inseam region 1C arranged in the crotch portion of the wearer at the time of wearing in the central portion in the longitudinal direction X, and has an anterior region 1A and a posterior region 1B with the inseam region 1C interposed therebetween. ing. The inseam area 1C has an excretion portion facing portion which is arranged to face the excretion portion of the wearer when the absorbent article 1 is worn. The anterior region 1A is arranged on the ventral side of the wearer with respect to the inseam region 1C when the absorbent article 1 is worn, and the posterior region 1B is arranged on the back side of the wearer with respect to the inseam region 1C when worn. The anterior region 1A, the posterior region 1B, and the inseam region 1C are each regions when the absorbent article 1 is divided into three regions by dividing the total length in the longitudinal direction X into three. The urine collecting pad 1 of the present embodiment has a portion constricted inward in the width direction Y in the inseam region 1C. The anterior region 1A and the posterior region 1B have a wider width than the constricted portion. Further, the rear region 1B has a wider width than the front region 1A.

As shown in FIG. 1A, the surface sheet 2 covers the entire area of the absorber 4 facing the skin. Further, the back surface sheet 3 arranged on the non-skin facing surface side of the absorber 4 covers the entire area of the non-skin facing surface of the absorber 4. The front surface sheet 2 and the back surface sheet 3 further have extending portions extending outward in the width direction Y from both side edges of the absorber 4 along the longitudinal direction X. The extending portion of the surface sheet 2 is joined to the leak-proof cuff 7, which will be described later, by a known joining means. Known bonding means include, for example, adhesives, heat seals, ultrasonic seals, high frequency seals and the like.

The absorber 4 shown in FIGS. 1 (a) and 1 (b) is a main liquid absorbing portion of the absorbent article 1, and has a shape substantially similar to the shape of the absorbent article 1 in a plan view. As shown in FIG. 1B, the absorber 4 includes an absorbent core 41 capable of absorbing and holding body fluid such as urine, and a core wrap arranged on the skin-facing surface and the non-skin-facing surface of the absorbent core 41. It has a sheet 42 and. In the present embodiment, the absorbent core 41 is arranged between the two core wrap sheets 42, 42, but the present embodiment is not limited to this form, and each surface of the absorbent core 41 is covered with one core. The absorbent core 41 may be coated with the wrap sheet 42, and the absorbent core 41 may not be coated with the core wrap sheet. Such an absorber 4 is, for example, between two core wrap sheets 42, 42 having a shape substantially similar to the plan view shape of the target absorbent article 1, the plane of the target absorbent article 1. After arranging the absorbent core 41 having a shape substantially similar to the visual shape, or covering the absorbent core 41 with a single core wrap sheet 42, the shape is substantially the same as the plan view shape of the target absorbent article 1. It can be obtained by cutting in the thickness direction so as to have a similar shape.

A pair of leak-proof cuffs 7 and 7 made of a liquid-resistant or water-repellent and breathable sheet are provided on both sides of the absorbent article 1 on the skin-facing surface along the longitudinal direction X. One or more elastic members 71 for forming a leak-proof cuff are arranged in the vicinity of the free end of each leak-proof cuff 7 in an extended state in the longitudinal direction X. The leak-proof cuff 7 stands up at least in the inseam region 1C by contracting the elastic member 71 arranged in the extended state, thereby preventing the outflow of excrement such as urine to the outside in the width direction Y.

Focusing on the thickness direction of the absorbent article 1, the absorbent article 1 is capable of holding the urine sensor U between the sheet located closest to the skin and the absorber 4. In the embodiment shown in FIG. 1A, the surface sheet 2 constitutes a sheet located on the side closest to the skin. For holding the urine sensor U, for example, the unbonded region between the sheet located closest to the skin and the absorber 4 is set as a holding region, and the urine sensor U is sandwiched in the region, or as will be described later. In addition, a mode in which a region capable of holding the urine sensor U is formed by a member constituting the absorbent article and the sensor is arranged in the region is included. In the present embodiment, as shown in FIG. 1 (b), the urine sensor U can be sandwiched in the unbonded region between the surface sheet 2 and the absorber 4. From the viewpoint of accurately detecting and analyzing urine, the urine sensor U is preferably arranged at least in the inseam area 1C.

As long as the urine sensor U can be held in the absorbent article of the present invention, the object of urine detection and analysis, and the arrangement position and size are not particularly limited. Examples of the detection target of the urine sensor U include the presence / absence and range of excretion of urine. In addition, the analysis target of the urine sensor U includes components in urine, and specifically, the composition in urine, the components contained therein, and the concentration thereof. The urine sensor U may detect and analyze one or more of these. Further, the urine sensor U may detect and analyze one or more objects using one sensor, or may detect and analyze a plurality of objects using a plurality of sensors. Examples of the composition and contained components in urine to be analyzed include water, pH (hydrogen ion), urinary sugar, urinary protein, urinary occult blood, uric acid, creatine, creatinine, various hormones and the like. The urine sensor U may be wirelessly or wiredly connected to another device and have a function of transmitting and receiving measurement data to the other device.

The length of the urine sensor U is preferably 30 mm or more, more preferably 50 mm or more, and preferably 150 mm or less, further preferably 100 mm or less. The width of the urine sensor U is preferably 10 mm or more, more preferably 20 mm or more, and preferably 50 mm or less, further preferably 40 mm or less. The thickness of the urine sensor U is preferably 2 mm or more, preferably 15 mm or less, and more preferably 10 mm or less. The shape of the urine sensor U in a plan view may be a sheet shape, a plate shape, a columnar shape, a prismatic shape, or the like.

As shown in FIG. 1A, the absorbent article 1 in which the sheet located closest to the skin is the surface sheet 2 has an opening 1P formed in the surface sheet for inserting and removing the urine sensor U. Is preferable. The opening 1P in the present embodiment is formed at a position where the urine sensor U can be arranged in the inseam region 1C and penetrates the surface sheet 2 in the thickness direction Z. As a result, the urine sensor U can be attached and held between the surface sheet 2 and the absorber 4 via the opening 1P, and can be held or removed. That is, the opening 1P is an entrance / exit for inserting / removing the urine sensor U. The opening 1P may have a notch mode as shown in the figure, or the opening may be visible in a plan view. Specifically, as shown in FIGS. 2 (a) and 2 (b), the opening 1P has, for example, a linear or V-shaped notch, or a circular shape as shown in FIGS. 2 (c) to 2 (e). The opening can have a geometric shape such as a triangle shape, a square shape, a semicircular shape, or a semicircular shape. As another embodiment, for example, a semicircular or semi-elliptical notch can be used. By having such a configuration, the urine sensor U can be easily attached to and detached from the absorbent article 1.

When the opening 1P is a linear notch, the opening 1P may or may not coincide with the longitudinal end of the absorbent article in the anterior region 1A. If the opening 1P and the longitudinal end of the absorbent article in the anterior region 1A do not coincide, the opening 1P is between the longitudinal end of the absorbent article in the anterior region 1A and the opening 1P. Distance D1 (see FIG. 1) is preferably formed at a position of more than 0 mm and less than 5 mm. Instead, the opening 1P may be formed at a position where the distance D1 is preferably more than 0 mm, more preferably 5 mm or more, still more preferably 10 mm or more.

The length W1 (see FIG. 1) of the opening 1P in the width direction Y is not particularly limited as long as the urine sensor U can be taken in and out, but is preferably 20 mm or more, more preferably 30 mm or more, and preferably 60 mm or less. More preferably, it is 50 mm or less. The length W1 of the opening 1P in the width direction Y is the maximum length along the width direction Y. The arrangement of the opening 1P in the width direction Y is preferably formed in the central region of the absorbent article 1 in the width direction from the viewpoint of accurately detecting and analyzing urine by the urine sensor U.

According to the absorbent article 1 of the present invention, since the urine sensor U can be easily attached to an appropriate position such as a portion facing the excretion portion, a deviation when arranging the urine sensor U is unlikely to occur, and urine detection and analysis can be successfully performed. It can be carried out. Further, since the urine sensor U can be easily removed from the absorbent article after use, the labor and cost of removal can be reduced. In particular, according to the present embodiment, there is an advantage that the urine sensor U can be more easily attached and detached by forming the opening in the sheet located on the side closest to the skin.

3A and 3B show another embodiment in the case where the sheet located closest to the skin is the surface sheet 2. As shown in FIG. 3A, the absorbent article 1 is a sheet in which the surface sheet 2 is located closest to the skin, and the non-skin side holding sheet 8a is on the non-skin facing surface side of the surface sheet 2. Is arranged. That is, a holding region of the urine sensor is formed between the surface sheet 2 and the non-skin side holding sheet 8a arranged between the surface sheet 2 and the absorber 4, and the urine sensor U can be held. The non-skin side holding sheet 8a shown in the figure is a rectangular sheet in a plan view, and the longitudinal direction X of the absorbent article 1 and the longitudinal direction of the non-skin side holding sheet 8a are made to coincide with each other so that the absorbent article 1 It is arranged in the central region in the width direction Y and at least the inseam region 1C in the longitudinal direction X. The surface sheet 2 has an opening 1P formed in or near the non-skin side holding sheet 8a in the thickness direction of the absorbent article 1, preferably at a position overlapping the non-skin side holding sheet 8a. Has been done. The urine sensor U can be taken in and out through the opening 1P. The attachment of the urine sensor U and the attachment of the urine sensor U and the fact that the vicinity of the opening 1P in the surface sheet 2 and the non-skin side holding sheet 8a are joined to each other at a position where a width is formed so that the urine sensor U can be taken in and out are formed. It is preferable because it can be removed successfully. The surface sheet 2 and the non-skin side holding sheet 8a can be joined by, for example, a joint row L1 described later. Further, the urine sensor U can be taken in and out by appropriately adjusting the length in the width direction between the joint rows L1.

As an arrangement form of the non-skin side holding sheet 8a, the surface sheet 2 and the flat non-skin side holding sheet 8a are joined in a laminated state, and between the surface sheet 2 and the non-skin side holding sheet 8a. The urine sensor U may be sandwiched, or as shown in FIG. 3B, the surface sheet 2 faces the non-skin in a state where both ends in the width direction of the skin-side holding sheet 8a are bent toward the surface sheet 2. It may be joined to the surface to form a space described later. In any case, for example, a row of joints described later can be formed and easily joined.

Of these, as shown in FIG. 3B, both ends of the non-skin side holding sheet 8a in the width direction are joined to the non-skin facing surface of the surface sheet 2 in a state of being bent toward the surface sheet 2. It is preferable that the urine sensor U is held by the sensor holding portion 1S formed between the surface sheet 2 and the non-skin side holding sheet 8a. Specifically, the sensor holding portion 1S is non-skinned with the surface sheet 2 by deforming the portions of the non-skin side holding sheet 8a that are bent toward the surface sheet 2 side at both ends in the width direction so as to expand in the thickness direction Z. It is formed as a space defined by the side holding sheet 8a, and the space serves as a holding region of the urine sensor U. By having such a configuration, it becomes easy to form a wide space in which the urine sensor U can be held, so that the attachment and detachment of the urine sensor U becomes easier. In addition to this, when the urine sensor U is attached and when the absorbent article 1 to which the urine sensor U is attached is used, there are problems such as damage to the absorber 4 located in the region overlapping the urine sensor U in the thickness direction Z. Can be reduced, and the absorption performance of excrement contained in the absorbent article can be less likely to be impaired. In addition, since the urine sensor U can be maintained in a predetermined position, the urine detection and analysis function of the urine sensor U can be fully exerted.

The length D2 (see FIG. 3A) of the non-skin side holding sheet 8a in the longitudinal direction is preferably 30 mm or more, more preferably 50 mm or more, and preferably 150 mm or less, further preferably 100 mm or less. .. The length W2 (see FIG. 3A) of the non-skin side holding sheet 8a in the width direction is preferably 40 mm or more, more preferably 50 mm or more, and preferably 100 mm or less, further preferably 90 mm or less. Is. The distance D3 (see FIG. 3A) between the longitudinal end of the absorbent article 1 and the longitudinal end of the non-skin side holding sheet 8a in the front region 1A is preferably 100 mm or more, more preferably 120 mm. As mentioned above, it is preferably 200 mm or less, more preferably 180 mm or less.

As shown in FIG. 3A, it is preferable that the absorbent article 1 is formed with a pair of joint rows L1 and L1 for joining the surface sheet 2 and the non-skin side holding sheet 8a. At least one of the joint rows L1 and L1 shown in the figure is located at a distance from the central portion in the width direction of the absorbent article 1 and extends in the longitudinal direction X of the absorbent article 1, respectively. The distance in the width direction from one joint row L1 to the central portion in the width direction of the absorbent article 1 and the distance in the width direction from one joint row L1 to the central portion in the width direction of the absorbent article 1 are the same. It may be, or it may be different. From the viewpoint of accurately detecting and analyzing urine, the joint rows L1 and L1 are both located at a distance from the center of the absorbent article 1 in the width direction and extend in the longitudinal direction X of the absorbent article 1. It is more preferable that they are arranged symmetrically with respect to the line. The region between the joint rows L1 and L1 is a region where the urine sensor U can be held together with the surface sheet 2 and the non-skin side holding sheet 8a. The surface sheet 2 and the non-skin side holding sheet 8a may be joined at one or more parts other than the joint row L1.

In the absorbent article shown in FIG. 3A, a curved joint portion connecting one ends of the joint portion rows L1 and L1 is further formed, forming a U-shaped joint portion as a whole. An opening 1P is formed at or near the other end of each of the joint rows L1 and L1. As a result, the absorbent article 1 can be taken in and out of the urine sensor U through the opening 1P, and is defined by the joint rows L1 and L1, the surface sheet 2 and the non-skin side holding sheet 8a. The urine sensor U can be held in the designated area. By having such a configuration, the urine sensor U can be easily attached and detached, and the urine sensor U can be prevented from being displaced due to the movement of the wearer. As a result, urine detection and urine detection and The analysis can be performed accurately.

Examples of the arrangement form of the joint row L1 include the forms shown in FIGS. 3A and 4A to 4C. Specifically, for example, in the embodiments shown in FIGS. 4A and 4B, the joint rows L1 and L1 are arranged in parallel so as to extend along the longitudinal direction X, or the joint rows L1 are arranged in parallel. , L1 is arranged so as to extend in the longitudinal direction X so that the length in the width direction gradually decreases from one end to the other end of the absorbent article 1 in the longitudinal direction X. In the form shown in the figure, no joints are formed at both ends of the joint rows L1 and L1, and an opening 1P is provided at one end thereof. Further, in the form shown in FIGS. 3A and 4C, the joint rows L1 and L1 are arranged, and one ends of the joint rows L1 and L1 are connected in a curved shape. The joint row L1 may be a straight line or a curved line. Alternatively, it may be a continuous line or a discontinuous line such as a broken line, and may be composed of a row formed by a large number of discontinuous point embosses or a row joined by an adhesive or the like. There may be. Instead of this, a second joint row may be formed so as to extend in the width direction Y and linearly connect one ends of the joint row L1 and L1 to each other. Further, other joining means may be used in addition to or in place of the joining row.

The length D5 of the joint row L1 in the longitudinal direction (see FIGS. 3A and 4A to 4C) is preferably 100 mm or more, more preferably 120 mm or more, and preferably 200 mm or less, further. It is preferably 180 mm or less. Further, the length W5 in the width direction (see FIGS. 4A to 4C) between the joint rows L1 on the side where the opening 1P is located is preferably 20 mm or more, more preferably 30 mm or more, and also. It is preferably 60 mm or less, more preferably 50 mm or less.

The above has been described with respect to one embodiment of the absorbent article of the present invention, and yet another embodiment of the present invention will be described with reference to FIGS. 5 to 7. The embodiments described below will be described focusing on points different from the above-described embodiments, and the above-described description of each embodiment will be appropriately applied to points not particularly described. Further, in FIGS. 5A and 5B, the same members as those in FIGS. 1 to 4 are designated by the same reference numerals.

5 (a) and 5 (b) show another embodiment of the absorbent article having a configuration capable of holding the urine sensor U. In the present embodiment, instead of the non-skin side holding sheet 8a described above, as shown in FIG. 5A, the skin side holding sheet 8b is arranged on the skin facing surface side of the surface sheet 2 to hold the skin side. The sheet 8b is a sheet located on the side closest to the skin. That is, in the present embodiment, a holding region capable of holding the urine sensor U is formed between the skin side holding sheet 8b and the surface sheet 2 located on the side closest to the skin. The arrangement of the skin side holding sheet 8b is such that the surface sheet 2 and the flat non-skin side holding sheet 8a are joined in a laminated state, and the urine sensor U is formed between the surface sheet 2 and the skin side holding sheet 8b. Or, as shown in FIG. 5B, both ends of the skin-side holding sheet 8b in the width direction are joined to the skin-facing surface of the surface sheet 2 in a state of being bent toward the surface sheet 2. Alternatively, a space described later may be formed.

Of these, it is preferable that the sensor holding portion 1S is formed as a space between the surface sheet 2 and the skin side holding sheet 8b according to the form shown in FIG. 5B described above. Specifically, the sensor holding is a region in which the urine sensor U can be held by deforming the portions of the skin-side holding sheet 8b that are bent toward the surface sheet 2 at both ends in the width direction so as to expand in the thickness direction Z. Part 1S is formed as a space between the surface sheet 2 and the skin side holding sheet 8b. Even with such a configuration, the effect of the present invention that the urine sensor U can be easily attached to a desired position and the sensor can be easily removed can be sufficiently exhibited. In particular, according to the present embodiment, since the sensor holding portion 1S is formed on the skin-facing surface side of the absorbent article 1, the absorbent article 1 to which the urine sensor U is attached and the urine sensor U are attached. When used, defects such as damage to the absorber 4 located in the region overlapping the urine sensor U in the thickness direction Z can be further reduced, and as a result, the absorption performance of excrement possessed by the absorbent article is less likely to be impaired. can do. Further, even when the absorbent article 1 is used, the urine sensor U can be maintained in a position where it easily comes into contact with urine, so that the urine detection and analysis function of the urine sensor U can be more effectively exerted. Can be made to urinate.

As shown in FIG. 5A, it is preferable that the absorbent article 1 is formed with a pair of joint rows L1 and L1 for joining the surface sheet 2 and the skin-side holding sheet 8b. At least one of the joint rows L1 and L1 shown in the figure is located at a distance from the central portion in the width direction of the absorbent article 1 and extends in the longitudinal direction X of the absorbent article 1, respectively. The distance in the width direction from one joint row L1 to the central portion in the width direction of the absorbent article 1 and the distance in the width direction from one joint row L1 to the central portion in the width direction of the absorbent article 1 are the same. It may be, or it may be different. From the viewpoint of accurately detecting and analyzing urine, the joint rows L1 and L1 are both located at a distance from the center of the absorbent article 1 in the width direction and extend in the longitudinal direction X of the absorbent article 1. It is more preferable that they are arranged symmetrically with respect to the line. The region between the joint rows L1 and L1 is a region where the urine sensor U can be held together with the surface sheet 2 and the skin side holding sheet 8b.

In the absorbent article 1 shown in FIG. 5A, a curved joint portion connecting one ends of the joint portion rows L1 and L1 is formed, and a U-shaped joint portion is formed as a whole. An opening 1P is formed at or near the other end of each of the joint rows L1 and L1. As a result, the urine sensor U can be taken in and out through the opening 1P, and the urine sensor U is located in the region defined by the joint rows L1 and L1, the surface sheet 2 and the skin side holding sheet 8b. Can be held. By having such a configuration, the urine sensor U can be easily attached and detached, and the urine sensor U can be prevented from being displaced due to the movement of the wearer. As a result, urine detection and urine detection and The analysis can be performed accurately.

In the present embodiment, the length in the longitudinal direction and the length in the width direction of the skin-side holding sheet 8b, and the longitudinal end of the absorbent article 1 in the front region 1A and the longitudinal end of the skin-side holding sheet 8b. The distances between them can be the same dimensions as the length D2, the length W2, and the distance D4 in the non-skin side holding sheet 8a, respectively. Further, the form of the joint row L1 formed on the skin side holding sheet 8b and the surface sheet can be the form shown in FIG. Further, in the present embodiment, the length in the longitudinal direction of the joint row L1 and the length in the width direction between the joint row L1 can be the same dimensions as the length D5 and the length W5, respectively. ..

Next, matters commonly applicable to each of the above-described embodiments will be described. From the viewpoint of bringing the excreted urine into contact with the urine sensor U to detect and analyze the urine quickly and accurately, the sheet located closest to the skin penetrates in the thickness direction Z of the absorbent article 1. It is preferable that a hole or a slit is formed. It is also preferable that the openings or slits are located in a region that overlaps the region in which the urine sensor U can be held in the thickness direction. In the following description, an opening refers to an opening in the natural state of the sheet, and a slit refers to a penetrating or non-penetrating notch that is not substantially open in the natural state of the sheet.

For example, in the embodiment shown in FIGS. 1 to 3, it is preferable that the surface sheet 2, which is the sheet located closest to the skin, is provided with holes or slits. The holes or slits are provided in a region that overlaps the region in which the urine sensor U can be held in the thickness direction. In the modes shown in FIGS. 1A and 1B, the region where the urine sensor U can be sandwiched between the surface sheet 2 and the absorber 4 is the region where the urine sensor U can be held. Further, in the modes shown in FIGS. 3A and 3B, a region where the urine sensor U can be sandwiched between the surface sheet 2 and the non-skin side holding sheet 8a, or the sensor holding portion 1S holds the urine sensor U. It becomes a possible area. In particular, in the forms shown in FIGS. 1 (a) and 1 (b) and 3 (a) and 3 (b), the opening or slit is a urine sensor U from the viewpoint of performing urine detection and analysis more quickly and accurately. It is more preferable that the urine is located only in a region that overlaps with the region in which the

Further, in the embodiment shown in FIG. 5A, it is preferable that the skin-side holding sheet 8b, which is the sheet located closest to the skin, is provided with an opening or a slit penetrating in the thickness direction. In the embodiment shown in the figure, the urine sensor U can be sandwiched between the surface sheet 2 and the skin side holding sheet 8b, or the sensor holding portion 1S becomes a region where the urine sensor U can be held.

From the viewpoint of forming a space for making it easy to put in and take out the urine sensor U, effectively preventing the urine sensor U from slipping when attached, and accurately detecting and analyzing urine, FIGS. As shown in (c), the absorber 4 preferably has a recessed portion 4L in which the absorber 4 is recessed toward the back surface sheet 3. The recessed portion 4L is a portion whose thickness is relatively thinner than the portion other than the recessed portion 4L in the absorber 4, or the basis weight thereof is other than the recessed portion 4L in the absorber 4. It is a part that is relatively lower than the part. Specifically, as shown in FIGS. 6A and 6B, the recessed portion 4L has a configuration in which the thickness of the absorber is reduced by pressing or the like, or the basis weight of the absorbent core 41 is reduced. The thickness or basis weight of the absorbent core 41 is relatively lower than that of other parts, or as shown in FIG. 6C, the part where the absorbent core 41 constituting the absorber 4 does not exist. is there. The cross-sectional shape of the recess of the recessed portion 4L is not particularly limited, and can be formed from, for example, a linear shape, a curved shape, or a ridge line composed of a combination thereof in a cross-sectional view.

From the same viewpoint, it is also preferable that the recessed portion 4L is located in a region where the urine sensor U can be held and a region where it overlaps in the thickness direction Z. In the form shown in FIG. 6A, a region capable of holding the urine sensor U is provided between the surface sheet 2 which is the sheet located closest to the skin and the absorber 4, and the region and the region. The region where the recessed portion 4L is formed overlaps in the thickness direction Z. In the present embodiment, since the recessed portion 4L is formed, the sensor holding portion 1S, which is a region capable of holding the urine sensor U, is formed between the surface sheet 2 and the absorber 4.

Further, in the forms shown in FIGS. 6 (b) and 6 (c), the non-skin side holding sheet 8a is arranged between the surface sheet 2 and the absorber 4, which are the sheets located closest to the skin. The non-skin side holding sheet 8a and the recessed portion 4L are arranged at positions where they overlap in the thickness direction. As a result, the sensor holding portion 1S, which is a region in which the urine sensor U can be held, is formed. In this embodiment, the sensor holding portion 1S and the region where the recessed portion 4L is formed overlap each other in the thickness direction. In any of the above-described forms, it is preferable that the recessed portion 4L is provided at least in the central region in the width direction Y and the inseam region 1C in the longitudinal direction of the absorbent article 1.

As shown in FIG. 7A, it is preferable that the absorbent core 41 extends along the longitudinal direction X and has a penetrating or non-penetrating absorber opening 4S in the thickness direction Z. By providing the absorbent core 41 with the absorbent opening 4S, it is possible to improve the fit of the absorbent article 1 when worn. The absorber openings 4S shown in the figure are formed in pairs with a distance from the central portion in the width direction Y of the absorber 4, and extend in the longitudinal direction X of the absorber 4, respectively. As shown in the figure, when the absorber 4 has a recessed portion 4L, it is preferable that each absorber opening 4S is located outside the recessed portion 4L in the width direction Y. The absorber opening 4S in the present embodiment may be a groove or a cavity that is opened in the natural state of the absorber 4, and instead, a penetration or a cavity that is not substantially opened in the natural state of the absorber 4 It may be a non-penetrating notch. The absorber opening 4S shown in FIG. 7B has a tapered shape in which the length in the width direction Y gradually decreases from the non-skin facing surface side to the skin facing surface side of the absorber 4. However, the present invention is not limited to this, and the lengths in the width direction Y may have the same shape.

The length W9 (see FIG. 7A) of the recessed portion 4L in the width direction Y is preferably 5 mm or more, more preferably 20 mm or more, and preferably 50 mm or less, further preferably 40 mm or less. The length D9 (see FIG. 7A) of the recessed portion 4L in the longitudinal direction X is preferably 5 mm or more, more preferably 20 mm or more, and the upper limit thereof is the total length or less in the longitudinal direction of the absorber 4. Yes, preferably 50 mm or less, more preferably 40 mm or less.

The absorption body opening 4S has an opening width on the skin facing surface side of preferably 1.2 mm or less, more preferably 1.0 mm or less, and further preferably 0.5 mm or less. Further, the lower limit of the opening width is substantially 0 mm as long as the absorber opening 4S is formed by a notch, but may be 0.01 mm or more. Further, the distance between the absorber openings 4S and 4S adjacent to each other in the width direction Y is preferably larger than the width W9 of the recessed portion 4L when the recessed portion 4L is provided, and the holding sheets 8a and 8b are further provided. When it is provided, it is preferably larger than the width W2 of each of the holding sheets 8a and 8b. Specifically, the distance between the absorber openings 4S, 4S adjacent to each other in the width direction Y is preferably 20 mm or more, more preferably 40 mm or more, and preferably 100 mm or less, more preferably 70 mm or less. The distance between the absorber openings 4S and 4S shall be measured from the ridgeline at the position closest to the central portion in the width direction.

In any of the above-described forms, it is preferable to provide a discriminating unit for discriminating the position where the urine sensor U is installed in the vicinity of the opening 1P in the absorbent article 1. As an aspect of the discriminating portion, for example, printing is performed at a predetermined position on the surface sheet 2 or each of the holding sheets 8a and 8b, or an uneven shape is formed in the vicinity of the opening 1P, and the urine sensor U is visually or tactilely used. There is an embodiment in which the position where the urine is installed can be recognized. By having such a configuration, the urine sensor U can be easily attached to a desired position, and the accuracy of urine detection and analysis can be improved.

As the members constituting the front surface sheet 2, the back surface sheet 3, the absorber 4, the non-skin side holding sheet 8a and the skin side holding sheet 8b, those used for the absorbent article can be used without particular limitation. For example, the sheet for forming the surface sheet 2, the non-skin side holding sheet 8a, and the skin side holding sheet 8b may be any liquid permeable material, for example, various liquid permeable non-woven fabrics and unevenness. A shaped non-woven fabric, a non-woven fabric having perforations, a perforated film, or the like can be used. The sheet for forming the back surface sheet 3 may be a sheet that is impervious to liquids, and for example, a resin film or a laminate of a resin film and a non-woven fabric or the like can be used. Further, as the sheet for forming the exterior body and the leakage-proof cuff 7, for example, the same sheet as the back sheet 3 can be used.

As the absorbent body 4, as a member constituting the absorbent core 41, an aggregate of hydrophilic fibers such as wood pulp and a hydrophilized synthetic fiber, or an aggregate in which a water-absorbing polymer is retained is used. Can be done. As the core wrap sheet 42, a liquid-permeable material can be used, for example, a thin paper such as tissue paper, a water-permeable non-woven fabric, or the same material as the surface sheet 2 can be used.

Although the present invention has been described above based on the preferred embodiment, the present invention is not limited to the above embodiment. The absorbent article of the present invention has been described by taking a urine absorbing pad as an example, but the present invention is not limited to this form, and is an article provided with an absorbent core such as an absorbent pad, a light incontinence pad, a deployable disposable diaper, and a pants-type disposable diaper. Applicable to.

Further, although the absorbent article of each of the above-described embodiments has been described as having a single-layer absorbent core, the present invention is not limited to this, and the absorbent article may have a multi-layer absorbent core. Examples of the multi-layered absorbent core include a form having a lower layer absorbent core and an upper layer absorbent core arranged on the skin facing surface side of the lower layer absorbent core. In this case, the recessed portion can be formed, for example, in at least one of the lower layer absorbent core and the upper layer absorbent core, preferably the upper layer absorbent core.

1 Absorbent article (urine collecting pad)
2 Front sheet 3 Back sheet 4 Absorber 4L Recessed part 8a Non-skin side holding sheet 8b Skin side holding sheet L1 Joint row U Urine sensor X Longitudinal direction Y Width direction Z Thickness direction

Claims (8)

It is provided with a front surface sheet arranged on the skin facing surface side, a back surface sheet arranged on the non-skin facing surface side, and an absorber arranged between the two sheets.
An absorbent article having a holding area for holding a urine sensor between the sheet located closest to the skin and the absorber. The sheet located closest to the skin is the surface sheet.
The absorbent article according to claim 1, wherein an opening for inserting and removing the urine sensor is formed in the surface sheet. A non-skin side holding sheet is provided between the surface sheet and the absorber.
The absorbent article according to claim 2, wherein the holding area is provided between the surface sheet and the non-skin side holding sheet. A pair of joint rows for joining the surface sheet and the non-skin side holding sheet are formed.
The joint row is located at a distance from the widthwise central portion of the absorbent article and extends in the longitudinal direction of the absorbent article.
The absorbent article according to claim 3, wherein the holding region is formed by the region between the joint rows. The sheet located closest to the skin is the skin-side holding sheet arranged on the skin-facing surface side of the surface sheet.
The absorbent article according to claim 1, wherein the holding area is provided between the surface sheet and the skin-side holding sheet. A pair of joint rows for joining the surface sheet and the skin-side holding sheet are formed.
The joint row is located at a distance from the widthwise central portion of the absorbent article and extends in the longitudinal direction of the absorbent article.
The absorbent article according to claim 5, wherein the holding region is formed by a region between the joint rows. The sheet located on the side closest to the skin is formed with an opening or a slit penetrating in the thickness direction of the absorbent article.
The absorbent article according to any one of claims 1 to 6, wherein the opening or the slit is located in a region where the holding region overlaps with the holding region in the thickness direction. The absorber has a recessed portion in which the absorber is recessed toward the back surface sheet side.
The absorbent article according to any one of claims 1 to 7, wherein the recessed portion is located in a region overlapping the holding region in the thickness direction.

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