JP6339440B2 - Drainage sensor sheet, wearing article having drainage sensor sheet, and method for producing drainage sensor sheet - Google Patents

Description

  The present invention relates to a drainage sensor sheet for a worn article for adults or infants, a worn article having the drainage sensor sheet, and a method for producing the drainage sensor sheet.

  Conventionally, a disposable diaper for adults that includes a sensor for detecting urination and the like, for example, allows a caregiver to detect the presence or absence of urination of a cared person is known (Patent Documents 1 and 2). The absorbent article described in Patent Literature 1 is an absorbent article in which a body fluid detection device is incorporated, and the absorbent article absorbs a plurality of conductive elements including a conductive nonwoven web. A signal device is connected to the plurality of conductive elements. Moreover, the disposable diaper described in Patent Document 2 includes a plurality of electrode arrays in which a plurality of electrodes are arranged, and includes a detection device that detects urination based on an impedance change between the plurality of electrodes.

Japanese Patent No. 5307811 JP 2013-39158 A

  In the bodily fluid detection device provided in the absorbent article described in Patent Document 1, an open circuit is formed by the signal device and the plurality of conductive elements. Therefore, when the bodily fluid is excreted in the absorbent article, the open circuit is closed. As a result, the signal device is activated, and the excretion of body fluid can be notified. Further, since the plurality of conductive elements are configured to include the conductive nonwoven web, they are soft.

  However, the body fluid detection device provided in the absorbent article described in Patent Document 1 is a sensor that detects only the presence or absence of excreted body fluid, and is not a sensor that measures the amount of urination or the like with high accuracy.

  On the other hand, the detection device provided with the disposable diaper described in Patent Document 2 can measure the amount of urination with high accuracy and can also detect the spread of urine. However, in Patent Document 2, there is a description of an electrode disposed on a film surface that is an insulator as a plurality of electrodes included in the detection device. However, the electrode and the conductor are formed of any material and how. It is not specifically described whether or not.

  Accordingly, it is an object of the present invention to provide a drainage sensor sheet and a wearing article having the drainage sensor sheet that can eliminate the drawbacks of the above-described prior art. Moreover, this invention is providing the manufacturing method of the drainage sensor sheet | seat which manufactures such a drainage sensor sheet | seat efficiently.

  The present invention is a drainage sensor sheet for a wearing article that detects the spread of a body fluid based on a change in impedance between a plurality of electrode groups, and the drainage sensor sheet has a body fluid spread on one surface thereof. A plurality of the electrode groups that maintain a state of being insulated from each other, each of the electrode groups is composed of at least two electrodes connected to each other via a conductive wire, the conductive wire is composed of a conductive yarn, The electrode is made of a conductive fiber sheet, and the plurality of electrode groups have an adhesive portion disposed on one surface of the drainage sensor sheet, and the conductive yarn is disposed adjacent to the adhesive portion, The present invention provides a drainage sensor sheet in which the conductive fiber sheet is arranged adjacent to the conductive yarn.

  Further, the present invention is a wearing article having the drainage sensor sheet, wherein the wearing article comprises a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body disposed between the two sheets. The drainage sensor sheet provides a worn article that is a separate sheet from the absorbent article disposed on the non-skin facing surface side of the back sheet.

  Further, the present invention is a method for manufacturing a drainage sensor sheet for a worn article that detects the spread of body fluid based on a change in impedance between a plurality of electrode groups, and is preliminarily arranged for conducting wires constituting the electrode groups Create an arrangement pattern diagram that describes the position, the arrangement position of the electrodes constituting the electrode group, and the arrangement position of the terminal for connecting the electrode group to an electronic device, and then on the arrangement pattern diagram, A base sheet having an adhesive portion disposed on the entire surface is disposed facing the other side of the base sheet on which the adhesive portion is not disposed, and then the base sheet is placed on one surface of the base sheet. A conductive thread to be the conductive wire is arranged and fixed via the adhesive portion following the planned arrangement position of the conductive wire in the arrangement pattern diagram that is seen through the material sheet, and then on one surface of the base sheet Fixed to the conductive On the yarn, a conductive fiber sheet serving as the electrode is arranged following the planned arrangement position of the electrode in the arrangement pattern diagram that is seen through the base sheet, and is fixed through the adhesive portion, and then, When the body fluid spreads by forming a through-hole penetrating the base sheet at the planned placement position of the terminal in the placement pattern diagram seen through the base sheet, and attaching the terminal to the through-hole. Provided is a method for producing a drainage sensor sheet, which maintains the state of being insulated from each other and has the electrode group consisting of at least two electrodes connected to each other via the conductive wires on one surface. is there.

  According to the drainage sensor sheet of the present invention, it is soft and the spread of body fluid can be measured with high accuracy. Moreover, according to the manufacturing method of the drainage sensor sheet of this invention, such a drainage sensor sheet can be manufactured efficiently.

It is a perspective view of a wearing article of a preferred embodiment provided with a drainage sensor sheet of the present invention. FIG. 2 is a partially cutaway plan view of the wearing article shown in FIG. 1 as viewed from the skin facing surface side in a state where the drainage sensor sheet is exposed by removing the urine collection pad. 3 is a cross-sectional view taken along line III-III in FIG. 4 (a) to 4 (g) are explanatory views for explaining the steps of the method for manufacturing the drainage sensor sheet shown in FIG. FIG. 5 is a perspective view illustrating an example of a conductive fiber sheet serving as an electrode included in the drainage sensor sheet illustrated in FIG. 2. FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. FIG. 7 is a block diagram illustrating a detailed configuration example of the data collection unit. FIG. 8 is a block diagram showing a detailed configuration example of the information processing means.

Hereinafter, the drainage sensor sheet of the present invention will be described based on preferred embodiments with reference to the drawings.
The drainage sensor sheet of the present invention is used for a worn article, and detects the spread of body fluid based on a change in impedance between electrodes. A wearing article 100 of a preferred embodiment provided with the drainage sensor sheet of the present invention includes a urine collecting pad 10 (absorbent article) provided with an absorbent main body 5 having a vertically long absorbent body 4, as shown in FIG. The disposable diaper 30 disposed on the non-skin facing surface side of the urine collecting pad 10, and the drainage sensor sheet 20 which is a separate and independent sheet disposed between the disposable diaper 30 and the urine collecting pad 10, It has.

As shown in FIG. 1, the wearing article 100 can be divided into a ventral region A, a back region B, and a crotch region C. Here, the abdominal area A is a part located on the abdomen side of the wearer at the time of wearing, the dorsal area B is a part located on the dorsal side of the wearer at the time of wearing, and the crotch area C is It is a part arranged between the dorsal region B.
The “Y direction” shown in the figure is a direction extending from the ventral region A to the dorsal region B or from the dorsal region B to the ventral region A, and the urine collecting pad 10, the drainage sensor sheet 20, or the disposable diaper 30. It is also the same direction as the longitudinal direction. The “X direction” shown in the figure is a direction orthogonal to the Y direction, and is also the same direction as the width direction of the urine collection pad 10, the drainage sensor sheet 20, or the disposable diaper 30. Further, the “Z direction” is also the same direction as the thickness of the urine collecting pad 10, the drainage sensor sheet 20, or the disposable diaper 30.
Moreover, in this specification, a "skin opposing surface" is a surface turned to a wearer's skin side at the time of wear among front and back both surfaces of each member, such as the surface sheet 2 mentioned later which comprises the urine collection pad 10, for example. Yes, the “non-skin facing surface” is, for example, a surface that is directed to the side opposite to the skin side of the wearer at the time of wearing, among the front and back surfaces of each member such as the surface sheet 2 to be described later that constitutes the urine collecting pad 10. is there.
Furthermore, a line CL shown in the figure is a center line extending in the longitudinal direction (Y direction) of the urine collecting pad 10, the drainage sensor sheet 20, or the disposable diaper 30.

  The urine removing pad 10 of the wearing article 100 of the present embodiment includes a liquid-permeable top sheet 2 disposed on the skin facing surface side, a liquid-impermeable back sheet 3 disposed on the non-skin facing surface side, A vertically long absorbent main body 5 having an absorbent body 4 disposed between the two sheets 2 and 3 is provided. The urine collecting pad 10 will be described in detail. The top sheet 2, the back sheet 3 and the absorbent body 4 have a long rectangular shape in the longitudinal direction (Y direction) of the absorbent main body 5 as shown in FIGS. ing. The top sheet 2 and the back sheet 3 respectively extend outward from left and right side edges along the longitudinal direction (Y direction) of the absorber 4 and front and rear end edges in the longitudinal direction (Y direction). As shown in FIG. 1, the surface sheet 2 has the same longitudinal dimension (Y direction) as the longitudinal direction (Y direction) of the back sheet 3, but as shown in FIG. The dimension in the direction (X direction) is smaller than the dimension in the width direction (X direction) of the back sheet 3. Each of the top sheet 2 and the back sheet 3 is formed directly on the extended portion extending outward from the peripheral edge of the absorbent body 4 or another member (a side that forms a three-dimensional gather 6 described later in the urine collecting pad 10). The sheet 61) is interposed, and is bonded to each other by an adhesive, heat fusion, or the like, and the absorber 4 is sandwiched and fixed. As shown in FIG. 3, the absorbent body 4 is formed by covering an absorbent core 41 formed by holding a water-absorbing polymer particle in an aggregate of fibers such as pulp fibers with a single core wrap sheet 42. Is formed.

  Moreover, as shown in FIGS. 1 and 3, the urine collecting pad 10 of the wearing article 100 of the present embodiment is arranged in the longitudinal direction (Y direction) of the absorbent main body 5 on the skin facing surface 5 u side of the absorbent main body 5. A water-repellent side sheet 61 disposed and fixed on each of the side portions 5s and 5s along the side, and a free end portion 61f of the side sheet 61 is extended in the longitudinal direction (Y direction) of the absorbent main body 5 The forming elastic member 62 is disposed and fixed, and when worn, the free end 61f of the side seat 61 rises to form the three-dimensional gather 6 by the contraction force of the three-dimensional gather forming elastic member 62. In other words, on both sides 5s and 5s along the longitudinal direction (Y direction) of the absorbent main body 5, the skin facing surface 5u side of the absorbent main body 5, that is, the skin facing surface 2u of the topsheet 2, is in the Y direction. A side sheet 61 having an elastic member 62 fixed in an elongated state is arranged and fixed on each side of the top sheet 2 over the entire length in the longitudinal direction (Y direction) of the absorbent main body 5. Thus, a pair of three-dimensional gathers 6 and 6 are formed. In addition, leg elastic members (not shown) for forming leg gathers are extended in the longitudinal direction (Y direction) on both side portions 5s, 5s along the longitudinal direction (Y direction) of the absorbent body 5 of the urine collecting pad 10. The leg gathers may be formed by contraction of the leg elastic members (not shown).

  As shown in FIGS. 1 to 3, the drainage sensor sheet 20 of the present embodiment is disposed on the non-skin facing surface side of the back surface sheet 3 of the urine collection pad 10, and what are the urine collection pad 10 and the disposable diaper 30? It is a separate and independent sheet. In the present embodiment, the drainage sensor sheet 20 is disposed on the non-skin facing surface side of the back sheet 3 and is fixed to the non-skin facing surface of the back sheet 3 constituting the urine collecting pad 10 via the adhesive portion 29. ing. In the present embodiment, the drainage sensor sheet 20 is formed in a rectangular shape that is long in the longitudinal direction (Y direction). The drainage sensor sheet 20 is preferably arranged over at least the crotch region C when detecting the spread of body fluid. In the wearing article 100 of the present embodiment, the outer peripheral edge is a urine collection pad. 10 is narrower than the outer peripheral edge, and narrower than the outer peripheral edge of the absorbent body 4 of the urine collecting pad 10. Specifically, in the longitudinal direction (Y direction), the drainage sensor sheet 20 substantially coincides with the length in the longitudinal direction (Y direction) of the absorbent body 4 of the urine collecting pad 10 and the width direction (X direction). Is formed shorter than the length of the absorbent body 4 of the urine collecting pad 10 in the width direction (X direction).

  The drainage sensor sheet of the present invention includes a plurality of electrode groups that maintain a state of being insulated from each other when body fluid spreads on the absorbent body 4 of the absorbent main body 5 on one surface thereof. It consists of at least two electrodes connected to each other via a conducting wire. Specifically, in the present embodiment, the drainage sensor sheet 20 spreads body fluid in the absorbent body 4 of the absorbent main body 5 on the skin facing surface 20u of the drainage sensor sheet 20, as shown in FIG. A plurality of electrode groups ET to be detected are provided. Each of the electrode groups ET preferably extends over at least the crotch region C and is formed in the number of 2 to 32 in the X direction from the viewpoint of detecting the spread of body fluid in the absorbent body 4 of the absorbent main body 5. More preferably, 2 to 8 are formed. Specifically, in the present embodiment, four electrode groups ET1 are formed on the skin facing surface 20u of the drainage sensor sheet 20 from the entire crotch region C to a part of the ventral region A and the dorsal region B. -ET4 is formed. Each of the electrode groups ET1 to ET4 is provided with a plurality of electrodes 21 and a conductor 22 which is a conductor connecting the plurality of electrodes 21 to each other. In this way, each electrode group is formed with a plurality of columns of electrodes 21, and a plurality of columns of the electrodes are formed (in this embodiment, four columns corresponding to the four electrode groups ET1 to ET4). As a result, a plurality of sensor elements constituted by a pair of mutually insulated electrodes and the gaps between them are formed in a wide range of the skin facing surface 20 u of the drainage sensor sheet 20. Each sensor element detects a change in impedance between the pair of electrodes. The sensor element is not accurate because AC, positive or negative half-wave, rectangular wave, triangular wave, etc. are applied, but in the following, for convenience, one of the paired electrodes is a positive electrode and the other is a negative electrode. Call.

  In the drainage sensor sheet of the present invention, the conductive wire is made of a conductive yarn, and the electrode is made of a conductive fiber sheet. The plurality of electrode groups are formed by arranging a conductive yarn adjacent to the adhesive portion arranged on one surface of the drainage sensor sheet and arranging a conductive fiber sheet adjacent to the conductive yarn. Has been. Specifically, in the drainage sensor sheet 20 of the present embodiment, as shown in FIG. 2, an adhesive portion 29 is disposed on the entire surface of the skin facing surface 20 u, and the conductive portion 29 is in contact with the adhesive portion 29 on the adhesive portion 29. Conductive wires 22 that are yarns are arranged, electrodes 21 that are conductive fiber sheets are arranged on the conductive yarns (conductive wires 22) in contact with the conductive yarns, and an electrode group ET is formed on the skin facing surface 20u. . The manufacturing method of the drainage sensor sheet 20 of this embodiment will be described in detail later. In addition, the adhesion part 29 does not exist uniformly on the whole surface on the skin opposing surface 20u, but a small clearance gap exists. As a result, the drainage sensor sheet 20 has air permeability.

  Two to fifty electrodes 21 made of a conductive fiber sheet are preferably arranged in the longitudinal direction (Y direction) of the drainage sensor sheet 20, and in this embodiment, as shown in FIG. Individually distributed. The electrodes 21 adjacent to each other in the Y direction are arranged in the order of positive electrode, negative electrode, positive electrode, or negative electrode, positive electrode, negative electrode, and so on, and constitute 11 sensor elements. ing. Moreover, it is preferable that 1 to 16 electrodes 21 are arranged in the width direction (X direction) of the drainage sensor sheet 20, and two electrodes 21 are arranged in the present embodiment. By arranging in this way, in this embodiment, for convenience, 22 sensor elements are configured. The electrodes 21 adjacent to each other in the X direction may be arranged in a relationship of a negative electrode with respect to the positive electrode and a positive electrode with respect to the negative electrode. However, in the present embodiment, the positive electrode is negative with respect to the positive electrode. It is arranged in a negative electrode relationship with respect to the electrode. When either positive or negative half wave, rectangular wave, triangular wave, or the like is applied, one electrode may be grounded.

  Specifically, in the drainage sensor sheet 20 of the present embodiment, six electrodes 21 are arranged in each of the four electrode groups ET1 to ET4. The plurality of electrodes 21 of each of the four electrode groups ET1 to ET4 are formed in the same rectangular shape and are formed in the same size. The electrode groups ET1 to ET4 are arranged in the width direction (X direction) of the drainage sensor sheet 20. The electrode 21a composed of the six conductive fiber sheets 211a of the electrode group ET1 is a negative electrode, and the drainage sensor sheet 20 extends from the entire crotch region C to a part of the ventral region A and the dorsal region B. Are arranged at equal intervals in the longitudinal direction (Y direction). The six electrodes 21a of the electrode group ET1 are connected via a conducting wire 22a made of a linear conductive thread 222a disposed on the outer end in the width direction (X direction) of each electrode 21a.

  Further, the six electrodes 21b of the electrode group ET2 are positive electrodes, and extend from the entire crotch region C to a part of the ventral region A and the dorsal region B in the width direction (X (Direction) in the width direction (X direction) inner side (close to the center line CL) than the electrode group ET1, and in the longitudinal direction (Y direction), between the electrodes 21a, 21a of the adjacent electrode group ET1. Is arranged. And the electrode 21b which consists of the six conductive fiber sheets 211b of the electrode group ET2 is from the linear conductive yarn 222b arranged in the width direction (X direction) inner end (near the centerline CL) of each electrode 21b. Are connected via a conductive wire 22b.

  The six electrodes 21c of the electrode group ET3 are negative electrodes and extend from the entire crotch region C to a part of the ventral region A and the dorsal region B in the width direction (X direction). In FIG. 2, the electrodes are arranged at equal intervals in the longitudinal direction (Y direction) with a space from the electrode group ET1. The electrode 21c composed of the six conductive fiber sheets 211c of the electrode group ET3 and the six electrodes 21a of the electrode group ET1 are arranged symmetrically with respect to the center line CL. The six electrodes 21c of the electrode group ET3 are connected via a conducting wire 22c made of a linear conductive thread 222c disposed on the outer end in the width direction (X direction) of each electrode 21c.

  The six electrodes 21d of the electrode group ET4 are positive electrodes, and extend from the entire crotch region C to a part of the ventral region A and the dorsal region B in the width direction (X (Direction) in the width direction (X direction) inner side (close to the center line CL) than the electrode group ET3, and in the longitudinal direction (Y direction), between the electrodes 21c, 21c of the adjacent electrode group ET3. Is arranged. The electrode 21d composed of the six conductive fiber sheets 211d of the electrode group ET4 and the six electrodes 21b of the electrode group ET2 are arranged symmetrically with respect to the center line CL. The six electrodes 21d of the electrode group ET4 are connected via a conductive wire 22d made of a linear conductive thread 222d disposed on the inner end (near the center line CL) in the width direction (X direction) of each electrode 21d. Has been.

Each electrode 21a of the electrode group ET1 is from the viewpoint of measurement accuracy for a plurality of times of urination and a large amount of urination, its area, is preferably 100 mm ² or more 7000 mm ² or less, is 100 mm ² or more 2000 mm ² or less Is more preferably 400 mm ² or more and 900 mm ² or less. From the same viewpoint, the length of each electrode 21a in the Y direction is preferably 1 mm or more and 100 mm or less, more preferably 5 mm or more and 50 mm or less, and the length of each electrode 21a in the X direction. Is preferably 3 mm or more and 150 mm or less, and more preferably 20 mm or more and 40 mm or less.

  Further, a separation distance (a separation distance between electrodes in the longitudinal direction (Y direction)) d (see FIG. 2) between the electrode 21a of the electrode group ET1 and the electrode 21b of the electrode group ET2 adjacent in the longitudinal direction (Y direction) is: From the viewpoint of improving measurement accuracy with respect to multiple urinations or a large amount of urination, it is preferably 1 mm or more and 50 mm or less, and more preferably 2 mm or more and 25 mm or less. The same applies to the distance between the electrode 21c of the electrode group ET3 and the electrode 21d of the electrode group ET4 adjacent in the longitudinal direction (Y direction).

Further, the electrode interval (electrode interval in the longitudinal direction (Y direction)) d ′ (see FIG. 2) between the electrode 21a of the electrode group ET1 and the electrode 21b of the electrode group ET2 adjacent in the longitudinal direction (Y direction) is plural times. From the viewpoint of improving measurement accuracy with respect to urination and a large amount of urination, it is preferably from 1.5 mm to 100 mm, and more preferably from 4.5 mm to 50 mm. The electrode interval d ′ is described by taking the electrode 21a of the electrode group ET1 and the electrode 21b of the electrode group ET2 as an example. The distance d between the electrodes in the longitudinal direction (Y direction) and the area of each electrode 21a, 21b are 4 It is defined as the total value of the distances a1 / 4 and b1 / 4 from the straight line close to the electrode end on the opposite side of the straight lines extending in parallel to the equally divided width direction (X direction) to the electrode end. . That is, the electrode interval d ′ (see FIG. 2) is expressed by the following formula (1).
d ′ = d + a1 / 4 + b1 / 4 (1)

The distances a1 / 4 and b1 / 4 are the electrodes closest to the other electrode when the area of the electrode is divided into ¼ by a straight line extending in parallel in the width direction (X direction) in one electrode. Is a distance between a straight line obtained by dividing the area of into 1/4 and an end facing the other electrode. In the present embodiment, since the shape of the electrode is rectangular, the position is the same as a quarter of the length of the electrode in the longitudinal direction (X direction).
The electrode interval between the electrode 21c of the electrode group ET3 and the electrode 21d of the electrode group ET4 that are adjacent in the longitudinal direction (Y direction) is defined in the same manner.

  The total length of the electrode row (distance from the outer end of the outermost electrode 21a of the electrode group ET1 to the outer end of the outermost electrode 21b of the electrode group ET2) L (see FIG. 2) is a plurality of times. From the viewpoint of improving measurement accuracy with respect to urination of urine and a large amount of urination, it is preferably from 100 mm to 620 mm, and more preferably from 180 mm to 520 mm. The same applies to the distance from the outer end of the outermost electrode 21c of the electrode group ET3 to the outer end of the outermost electrode 21d of the electrode group ET4.

  Further, there are a plurality of intervals W (see FIG. 2) between the conductive yarn 222a constituting the conductive wire 22a of the electrode group ET1 adjacent in the width direction (X direction) and the conductive yarn 222b constituting the conductive wire 22b of the electrode group ET2. From the viewpoint of improving measurement accuracy for single urination or a large amount of urination, it is preferably 5 mm or more and 155 mm or less, and more preferably 25 mm or more and 45 mm or less. The same applies to the distance between the conductive yarn 222c constituting the conductive wire 22c of the electrode group ET3 and the conductive yarn 222d constituting the conductive wire 22d of the electrode group ET4.

Further, the interval W ′ (see FIG. 2) between the conductive yarn 222b constituting the conductive wire 22b of the electrode group ET2 adjacent in the width direction (X direction) and the conductive yarn 222d constituting the conductive wire 22d of the electrode group ET4 is From the viewpoint of improving measurement accuracy with respect to multiple urinations or a large amount of urination, it is preferably 10 mm to 30 mm.
The shape (design), size, and arrangement interval of each electrode 21 are not limited to the above embodiment.

  The electrode groups ET1 to ET4 are connected to terminals 23 and 24 for connection to electronic devices, respectively. Specifically, in the ventral region A, the drainage sensor sheet 20 of the present embodiment includes the lead wires 22a that connect the electrodes 21a, 21a,... Of the electrode group ET1, and the electrodes 21c, 21c,. The conductive wire 22c to be connected extends to a rectangular connection electrode 231 that is long in the width direction (X direction), and has a conductive terminal 23 at the center in the width direction (Y direction) of the connection electrode 231. Are continuous. That is, the electrode group ET1 and the electrode group ET3 are connected to the terminal 23. In the ventral region A, the drainage sensor sheet 20 includes a conductive wire 22b that connects the electrodes 21b, 21b,... Of the electrode group ET2, and a conductive wire 22d that connects the electrodes 21d, 21d,. The connection electrode 241 extends in the width direction (X direction) and is continuous through the terminal 24 at the center in the width direction (Y direction) of the connection electrode 241. That is, the electrode group ET2 and the electrode group ET4 are connected to the terminal 24. The positions of the terminals 23 and 24 are not limited to the ventral region A and may not be on the drainage sensor sheet 20.

  The rectangular connection electrodes 231 and 241 are made of a conductive fiber sheet, like the electrode 21, and the conductive thread (through the adhesive portion 29 disposed on the entire skin facing surface 20 u of the drainage sensor sheet 20) The conductive wire 22) is fixed in contact with the conductive yarn so as to be electrically connected. The drainage sensor sheet 20 has rectangular connection electrodes 231 and 241, but does not have the connection electrodes 231 and 241, and the conducting wire 22 a and the conducting wire 22 c are directly connected via the terminal 23. The conducting wire 22b and the conducting wire 22d may be continuous via the terminal 24 directly. Further, the adhesive part 29 on the skin facing surface 20u of the drainage sensor sheet 20 is drained by arranging the adhesive part sparsely enough to fix the conductive yarn or conductive fiber sheet by spiral coating or the like on the entire surface. The air permeability of the sensor sheet 20 may be increased.

Hereinafter, the manufacturing method of the drainage sensor sheet | seat for wear articles which detects the spreading of the bodily fluid in the absorber 4 of the absorptive main body 5 based on the impedance change between several electrode groups is demonstrated.
Specifically, the drainage sensor sheet 20 of the present embodiment described above will be described as an example.
First, as shown to Fig.4 (a), the base material sheet | seat 20f by which the adhesion part 29 was distribute | arranged to the whole surface (surface on the side used as the skin opposing surface 20u) is prepared. The base material sheet 20f to be prepared is a sheet having the same shape and size as the drainage sensor sheet 20 corresponding to the shape of the drainage sensor sheet 20 to be formed, or from the shape of the drainage sensor sheet 20 to be formed. Is also a large sheet. In this embodiment, as shown in FIG. 4A, the prepared base sheet 20f is the former sheet corresponding to the shape of the drainage sensor sheet 20 to be formed, and has a rectangular shape that is long in the Y direction. Is formed. In addition, when the base material sheet 20f larger than the shape of the drainage sensor sheet 20 to be formed is prepared, for example, the drainage sensor to be formed after the terminals 23 and 24 shown in FIG. What is necessary is just to cut to the shape and magnitude | size of the sheet | seat 20. FIG.

The base material sheet 20f is made of a material conventionally used for wearing articles, specifically, non-woven fabric such as spunbond, spunlace and air-through, fabric such as woven fabric and knitted fabric, and plastic film. Etc. In addition, when using a spunbonded nonwoven fabric as the base material sheet 20f, the basis weight is preferably 5 g / m ² or more and 100 g / m ² or less, more preferably 10 g / m ² or more and 80 g / m ² or less. .
Moreover, as the adhesion part 29, the adhesive agent conventionally used for the wearing article can be used.
Moreover, as the base material sheet 20f having the adhesive portion 29 disposed on the entire surface, an adhesive tape in which an acrylic adhesive is disposed on a rayon nonwoven fabric, or an adhesive tape in which a rubber adhesive is disposed on a polyester nonwoven fabric. May be used. Specifically, as a pressure-sensitive adhesive tape in which an acrylic pressure-sensitive adhesive is arranged on a rayon nonwoven fabric, from the viewpoint that it can be used repeatedly, for example, “Micropore TM Surgical Tape” manufactured by Sumitomo 3M Limited is preferably used, and polyester As a pressure-sensitive adhesive tape in which a rubber-based pressure-sensitive adhesive is arranged on a non-woven fabric, for example, “Nito Through” manufactured by Nitto Denko Corporation is preferably used from the viewpoint of high adhesiveness. Both are preferably used from the viewpoint of air permeability.

  Produced in advance an arrangement pattern diagram describing the arrangement positions of the conductive wires constituting the electrode group, the arrangement positions of the electrodes constituting the electrode group, and the arrangement positions of terminals for connecting the electrode group to an electronic device. To do. In this embodiment, as shown in FIG. 4 (b), a general paper 7 is prepared, and on one surface of the paper 7, the planned arrangement positions 22af of the conducting wires 22a to 22d constituting the electrode groups ET1 to ET4. To 22df, planned placement positions 21af to 21df of the electrodes 21a to 21d constituting the electrode groups ET1 to ET4, planned placement positions 23f and 24f of the terminals 23 and 24 for connecting the electrode groups ET1 to ET4 to an electronic device, and a conductor 22a , 22c, a layout pattern diagram 7f describing the planned layout position 231f of the connection electrode 231 connecting the two conductors 22b and 22d and the planned layout position 241f of the connection electrode 241 connecting the conductive wires 22b, 22d. In addition, any of the process of preparing the base material sheet 20f shown in FIG. 4A and the process of preparing the paper 7 describing the arrangement pattern diagram 7f shown in FIG. 4B may be upstream processes. .

  Next, on the arrangement pattern diagram, the base sheet in which the adhesive portion is disposed on the entire surface is disposed with the other surface side of the base sheet on which the adhesive portion is not disposed facing each other. In this embodiment, as shown in FIG. 4C, the outer shape of the paper 7 and the outer shape of the base sheet 20f are made to coincide with each other on the arrangement pattern diagram 7f described on one surface of the paper 7 ( The base material sheet 20f on which the adhesive portion 29 is disposed on the surface facing the skin 20u), and the other surface side of the base material sheet 20f on which the adhesive portion 29 is not disposed (side on which the non-skin facing surface 20d is provided). Are placed facing each other.

Next, on one surface of the base material sheet, conductive yarns serving as the conductive wires are arranged and fixed through the adhesive portions following the planned placement positions of the conductive wires in the arrangement pattern diagram that can be seen through the base material sheet. In the present embodiment, as shown in FIG. 4 (d), the sheet 7 is described on the paper 7 that is seen through the base sheet 20f on one surface (the surface on the side facing the skin 20u) of the base sheet 20f. The conductive yarns 222a to 222d constituting the conducting wires 22a to 22d are arranged along the planned arrangement positions 22af to 22df of the conducting wires 22a to 22d in FIG. 7f, and are arranged on the entire surface of the base sheet 20. It fixes on one surface (surface which becomes the skin opposing surface 20u) through the adhesion part 29 on the one surface of the base material sheet 20f.
When the substrate sheet 20f is thick, such as when the figure is difficult to see through, it may be illuminated using a light source such as a lamp from the side of the paper 7 that does not contact 20f.

  The conductive yarns 222a to 222d to be the conductive wires 22a to 22d include synthetic fibers made by mixing metal or carbon particles that conduct electricity, fibers coated with metal or carbon on the fiber surface, metal fibers such as stainless steel, etc. Can be mentioned. Specifically, trade names “Super α Fiber”, “Stainless Steel Fiber”, “Sunderron Dyna Fiber”, etc., manufactured by Ken A Co., Ltd., are used for the conductive yarn 222. The resistance value is preferably 0.08 Ω to 40 Ω when the probe is placed at an interval of 2 cm with a digital multimeter COSTOM POKET DMM CDM-12D.

  Next, a conductive fiber sheet serving as an electrode is arranged on the conductive yarn fixed on one surface of the base sheet, following the planned placement position of the electrode in the layout pattern diagram that can be seen through the base sheet. Fix through the adhesive section. In this embodiment, as shown in FIG.4 (e), the conductive fiber sheets 211a-211d used as the electrodes 21a-21d are prepared beforehand. The prepared conductive fiber sheets 211a to 211d are sheets corresponding to the shapes of the electrodes 21a to 21d to be formed, and are formed in the same shape and size as the electrodes 21a to 21d following the electrodes 21a to 21d. . Using the conductive fiber sheets 211a to 211d formed in this way, as shown in FIG. 4E, the arrangement pattern positions 21af to the electrodes 21a to 21d in the arrangement pattern FIG. Conductive fiber sheets 211a to 211d to be electrodes 21a to 21d are arranged on 21df. In this way, the conductive fiber sheets 211a to 211d are fixed on the conductive yarns 222a to 222d on one surface of the base sheet 20f (the surface on the side facing the skin 20u) so as to be in contact therewith.

  From the viewpoint of preventing contamination before use, as shown in FIG. 5, the conductive fiber sheets 211 a to 211 d are provided with a sheet adhesive portion 212 on the entire surface (the surface on the side facing the skin). The release paper 213 that covers the sheet adhesive portion 212 is preferably provided in advance. In the case where the conductive fiber sheets 211a to 211d in which the release paper 213 is arranged in advance on one surface (surface on the side facing the skin) are used, the sheet adhesive portion 212 in the conductive fiber sheets 211a to 211d is used. The other surface side that is not disposed (the side that is the non-skin facing surface) is disposed to face one surface of the base sheet 20f (the surface that is the skin facing surface 20u), and on the one surface of the base sheet 20f. The conductive fiber sheets 211a to 211d are fixed on the conductive yarns 222a to 222d through the adhesive portion 29 in contact therewith.

As the conductive fiber sheets 211a to 211d to be the electrodes 21a to 21d, the surface of the non-woven fabric or woven fiber is plated with a thin film of copper, nickel, gold, silver, or the like, or copper, nickel, Examples thereof include a mesh sheet woven with a synthetic resin monofilament yarn obtained by plating a thin film of gold, silver or the like. Specifically, a conductive fabric, a conductive nonwoven fabric, a conductive mesh, or the like manufactured by Seiren Co., Ltd. is used for the conductive fiber sheet.
Moreover, as the sheet | seat adhesion part 212, the adhesive agent conventionally used for the wearing article can be used. As the release paper 213, a general release paper can be used.
The resistance value of the conductive fiber sheet is preferably 0.01Ω to 100Ω when measured with a digital multimeter COSTOM POKET DMM CDM-12D with the probe vertically applied at intervals of 2 cm.

  Moreover, in this embodiment, as shown in FIG.4 (e), the conductive fiber sheets 232 and 242 for connection electrodes used as the connection electrodes 231 and 241 are prepared beforehand. The prepared conductive fiber sheets 232 and 242 for connection electrodes are sheets corresponding to the shapes of the connection electrodes 231 and 241 to be formed, and follow the connection electrodes 231 and 241 and have the same shape and shape as the connection electrodes 231 and 241. Largely formed. Using the conductive electrode sheets 232 and 242 for the connection electrode formed in this way, the conductive yarn fixed via the adhesive portion 29 on one surface of the base material sheet 20f (surface on the side facing the skin facing surface 20u). The conductive fiber sheet 232 for connection electrodes to be the connection electrodes 231 and 241 on the arrangement positions 231f and 241f of the connection electrodes 231 and 241 in FIG. , 242 are arranged. In this way, the conductive fiber sheets 232 and 242 for connection electrodes are fixed on the conductive yarns 222a to 222d on one surface of the base sheet 20f (the surface on the side facing the skin 20u) by contacting them. .

  In addition, as the conductive fiber sheets 232 and 242 for connection electrodes, sheets made of the same material as the conductive fiber sheets 211a to 211d can be used. In addition, from the same viewpoint as the conductive fiber sheets 211a to 211d, the conductive fiber sheets 232 and 242 for connection electrodes are provided with a sheet adhesive portion 212 on the entire surface (surface on the side facing the skin). It is preferable that a release paper 213 that covers the adhesive portion 212 is provided in advance.

  Next, a through-hole penetrating the base material sheet is formed at a planned placement position of the terminal in the layout pattern diagram that can be seen through the base material sheet, and the terminal is attached to the through hole. In this embodiment, as shown in FIG. 4 (f), the conductive fiber sheet for connection electrodes in which the planned placement position 23f of the terminal 23 in the placement pattern FIG. 7f is the connection electrode 231 that connects the conductors 22a and 22c. 232. Moreover, the arrangement | positioning plan position 24f of the terminal 24 of arrangement | positioning pattern figure 7f exists in the range of the conductive fiber sheet 242 for connection electrodes used as the connection electrode 241 which connects conducting wire 22b, 22d. And the through-hole which penetrates not only the connection electrode conductive fiber sheets 232 and 242, but also the base material sheet 20f at the arrangement positions 23f and 24f of the terminals 23 and 24 on the connection electrode conductive fiber sheets 232 and 242 233 and 243 are formed. And as shown in FIG.4 (g), the terminals 23 and 24 are attached to each through-hole 233,243, and the drainage sensor sheet | seat 20 is manufactured.

  As the terminals 23 and 24, any cooperating male and female such as metal connectors or conductive snaps, fasteners, hook-and-loop fasteners (magic tape (registered trademark), etc.), screws, hooks, biting fasteners, etc. In this embodiment, a metal snap 8 is used. The metal snap 8 includes a metal male member 81 and a metal female member 82. As shown in FIG. 6, the metal snap 8 is inserted into the through-holes 233 and 243 from the connection electrode conductive fiber sheets 232 and 242 on one surface (skin facing surface 20u) of the base sheet 20f. 81 is inserted and fitted and fixed to a female member 82 disposed in contact with the other surface side of the base sheet 20f (the side to be the non-skin facing surface 20d). The terminal 23 fixed as described above is connected to conductive fiber sheets 211a and 211c to be electrodes 21a and 21c and connection electrode conductive to be connection electrodes 231 through conductive yarns 222a and 222c to be conductive wires 22a and 22c. The electrically conductive fiber sheet 232 is electrically connected. Further, the terminal 24 fixed as described above is connected to the conductive fiber sheets 211b and 211d to be the electrodes 21b and 21d and the connection electrode to be the connection electrode 241 through the conductive yarns 222b and 222d to be the conductive wires 22b and 22d. The conductive fiber sheet 242 is electrically connected. The male member may be a plastic plated with metal.

  The drainage sensor sheet manufactured through the above steps maintains an insulated state when the body fluid spreads on the absorbent body 4 of the urine collection pad 10 by being attached to the back sheet 3 of the urine collection pad 10. The electrode group which consists of at least two electrodes where electrodes are connected to each other via a conducting wire is provided on one surface. Specifically, as shown in FIG. 4G, the drainage sensor sheet 20 manufactured according to this embodiment is applied to the body fluid on the absorbent body 4 of the urine collecting pad 10 attached on one surface (skin facing surface 20u). From the electrodes 21a to 21d (conductive fiber sheets 211a to 211d) connected to each other via the conductive wires 22a to 22d (conductive threads 222a to 222d) The four electrode groups ET1 to ET4 are provided. According to the manufacturing method of the drainage sensor sheet 20 of this embodiment, such a drainage sensor sheet 20 can be manufactured efficiently.

In addition, in the manufacturing method (this manufacturing method 1) of the drainage sensor sheet 20 of this embodiment, the arrangement pattern figure 7f described on one surface of the paper 7 was used, However, An arrangement pattern is input into PC etc., and drainage is performed. A conductive yarn (conductive wire 22) is disposed on the adhesive portion 29 disposed on the front surface of the liquid sensor sheet 20 (skin opposing surface 20u), and a second conductive fiber sheet (electrode 21) is disposed thereon. The manufacturing method (manufacturing method 2) of the drainage sensor sheet 20 of the embodiment may be used.
In this manufacturing method 1, the electrode sheet is arranged so as to overlap the layout pattern diagram when manufacturing the drainage sensor sheet. However, the manufacturing method 2 is also used in which a sheet on which the electrode portion is printed is prepared and bonded. Liquid sensor sheet can be made. According to the manufacturing method 2, the shape and size of the sheet can be easily changed using a printed CAD or the like.

When manufacturing method 2 is explained in full detail, an electrode sheet is produced by printing an electrode using a conductive ink in the arrangement position of the electrode which constitutes an electrode group.
And the conductive thread used as conducting wire is arranged and fixed on one surface of the base material sheet in which the adhesive part is arranged on the entire surface. And a through-hole is formed in the arrangement | positioning planned position of the terminal electrically connected with an electrode or an electroconductive thread | yarn, and a terminal is attached to this through-hole. That is, a through hole for attaching a terminal so as to be in contact with the connection electrode printing portion is formed so as to penetrate the base sheet, and the terminal is attached. Then, the produced electrode sheet is fixed on the conductive yarn fixed on one surface of the base sheet. Specifically, the electrode sheet produced as described above is bonded and fixed so that the surface on which the electrode is printed is in contact with the adhesive portion. By carrying out like this, an electrode, a conductive thread | yarn, a connection electrode printing part, and a terminal are electrically connected.
By manufacturing method 2, mechanization can be performed and continuous production is also possible.
In addition, an electrode sheet can be made smaller than a base material sheet, and an adhesive can also be printed on a base material sheet only in the range of an electrode sheet.
Moreover, you may print an adhesive to the adhesive part other than the electrode part of an electrode sheet instead of a base material sheet. In this case, the electrode sheet can be made smaller than the base sheet. Conversely, the base sheet may be made smaller than the electrode sheet, and the adhesive may be printed on the electrode sheet only in a range where the base sheet is pasted. When printing the adhesive part on the electrode sheet, it is preferable to fix the base sheet to the electrode sheet after fixing the conductive yarn to the electrode sheet.

  In addition, with respect to the manufacturing method 2, an electrode sheet is produced by printing an electrode using conductive ink at a position where an electrode constituting the electrode group is to be arranged, and then printed on one surface of the produced electrode sheet (printing) It is also possible to dispose and fix a conductive yarn to be a conductive wire on the surface of the electrode sheet and fix the base sheet on the conductive yarn fixed on one surface of the electrode sheet. Moreover, after fixing an electrode sheet and a base material sheet, a through-hole may be formed in the arrangement | positioning planned position of the terminal electrically connected with an electrode or a conductive thread | yarn, and a terminal may be attached to this through-hole.

  In the present embodiment, in the drainage sensor sheet 20, the conductive wires 22a to 22d constituting the electrode groups ET1 to ET4 are formed from the conductive yarns 222a to 222d, and the electrodes 21a to 21d constituting the electrode groups ET1 to ET4 are electrically conductive. Since the connection electrodes 231 and 241 formed from the conductive fiber sheets 211a to 211d and forming the electrode groups ET1 to ET4 are formed from the conductive fiber sheets 232 and 242 for connection electrodes, they are soft. These sheets have a bending stiffness value in the MD direction of preferably 10 g or more and 80 g or less, more preferably 15 g or more and 60 g or less, and a bending stiffness value in the CD direction is preferably 5 g or more and 60 g or less, more preferably 10 g. It is 40 g or less. The bending stiffness value can also be measured by a handometer, a taber tester, a KES bending tester, or the like. In addition, MD direction means the machine direction (flow direction) at the time of manufacture of a nonwoven fabric etc., and CD direction means the direction orthogonal to the machine direction at the time of manufacture of a nonwoven fabric etc. The measurement sample was measured at a length of 17 cm in the MD direction and from 8 cm to 9 cm in the CD direction.

Further, the drainage sensor sheet 20 having a plurality of electrode groups ET1 to ET4 has an air permeability of preferably 10 μm / Pa · s or more and 1500 m when the raw material base sheet 20f has air permeability. / KPa · s or less, more preferably 20 μm / Pa · s or more and 800 m / kPa · s or less.
The air permeability is obtained as the reciprocal of the airflow resistance measured by AUTOMATIC AIR-PERMEABILITY TESTER KES-F8-AP1 (breathability tester) manufactured by Kato Tech. A thing with small air permeability may be calculated | required from the measured value of a galley densometer.

  The data collection means 27 which is an electronic device is fixed to the terminals 23 and 24 arranged in the ventral region A of the drainage sensor sheet 20. In the drainage sensor sheet 20, since four electrode groups ET1 to ET4 each having six electrodes 21 are formed on the skin facing surface 20u of the drainage sensor sheet 20, a plurality of sensor elements are drainage sensors. The sheet 20 is configured on the skin facing surface 20u. Each sensor element changes the impedance between the electrode 21a (negative electrode) of the electrode group ET1 and the electrode 21b (positive electrode) of the electrode group ET2, and the electrode 21c (negative electrode) and electrode group ET4 of the electrode group ET3. Change in impedance between the electrode 21d (positive and negative electrodes) of the electrode group ET1, change in impedance between the electrode 21a (negative electrode) of the electrode group ET1 and the electrode 21d (positive electrode) of the electrode group ET4, and electrodes of the electrode group ET3 A change in impedance between 21c (negative positive electrode) and the electrode 21b (positive electrode) of the electrode group ET2 is measured, and the spread of body fluid such as urine is detected based on the change in impedance. The spread of body fluid such as urine is calculated by the information processing means 28 using the data collected by the data collecting means 27 fixed to the drainage sensor sheet 20. That is, when the body fluid spreads, the dielectric constant of the absorbent body 4 included in the urine pad 10 (absorbent article) changes, and as a result, the impedance between the individual electrodes 21 changes. As the body fluid spreads, there occurs between the electrodes 21 whose impedance has changed and between the electrodes 21 which have not changed, and as a result, the spread of the body fluid can be detected by measuring the entire impedance. Hereinafter, the data collection unit 27 and the information processing unit 28 will be described in detail.

As shown in FIG. 7, the data collection unit 27 includes a voltage control unit 271, an acceleration sensor 272, and a data logger 273.
The voltage control means 271 applies a rectangular wave voltage of, for example, 400 kHz to 700 kHz to the entire electrode circuit formed on the drainage sensor sheet 20, and detects a change in impedance between the electrodes 21 constituting the sensor element. The voltage control unit 271 converts the impedance change between the electrodes per unit time into an output of a voltage value, and outputs and stores it in the data logger 273 for each unit time. The unit time is preferably 0.1 to 60 seconds, more preferably 0.2 to 20 seconds.

  The acceleration sensor 272 detects (collects) accelerations in the X direction, the Y direction, and the Z direction due to the displacement of the user, and outputs the detection results to the data logger 273 for storage.

  The data logger 273 is an electronic measuring instrument that stores data acquired from the voltage control unit 271 and the acceleration sensor 272. The data logger 273 transfers the stored data to the information processing unit 28 in response to a request from the information processing unit 28 or when it is detected that it is connected to the information processing unit 28.

  The information processing means 28 is, for example, a computer and includes a CPU (Central Processing Unit), ROM (Read Only Memory), RAM (Random Access Memory), HDD (Hard Disk Drive), etc. As shown, the data acquisition means 281, body fluid discharge amount calculation means 282, body fluid discharge time calculation means 283, and body fluid discharge speed calculation means 284 are configured.

  When the data acquisition unit 281 is connected to the data collection unit 27 via a cable, the data acquisition unit 281 acquires data stored in the data logger 273 of the data collection unit 27, and calculates a body fluid discharge amount calculation unit 282 and a body fluid discharge time calculation. The result is supplied to the means 283, and the calculation results are supplied to the body fluid discharge speed calculation means 284.

  The body fluid discharge amount calculation unit 282 calculates the body fluid discharge amount based on the data acquired from the data acquisition unit 281. The body fluid discharge time calculation unit 283 calculates the body fluid discharge time based on the data acquired from the data acquisition unit 281. The bodily fluid discharge speed calculating means 284 calculates the bodily fluid discharge speed based on the data acquired from the bodily fluid discharge amount calculating means 282 and the data acquired from the bodily fluid discharge time calculating means 283.

  According to the drainage sensor sheet 20, the data collection unit 27, and the information processing unit 28 having the electrodes configured as described above, the data collected by the data collection unit 27 is acquired, and the information processing unit 28 spreads the body fluid. It is possible to calculate the body fluid discharge amount, the body fluid discharge time, and the body fluid discharge speed, which are the elements of.

Next, the disposable diaper 30 disposed on the non-skin facing surface side of the urine collecting pad 10 will be described in detail.
As shown in FIG. 1, the disposable diaper 30 includes a diaper top sheet 32 to which the urine collecting pad 10 is attached, a diaper back sheet 33 arranged on the most non-skin facing side, and a space between the two sheets 32 and 33. And a diaper absorber 34 disposed on the diaper. Moreover, the disposable diaper 30 distribute | arranges the diaper leg elastic member (not shown) for leg gather formation in the expansion | extension state to a longitudinal direction (Y direction) outward of the width direction (X direction) of the absorber 34 of a diaper, A diaper leg gather 35 is formed by contraction of the diaper leg elastic member (not shown).

  As shown in FIG. 1, the diaper absorber 34 is wider than, for example, the urine collection pad 10 used on the skin-facing surface (inner side) of the disposable diaper 30, and the left and right side edges and the back of the ventral region A. The left and right side edges of the side region B extend outward in the width direction (X direction) from the left and right side edges of the crotch region C. The left and right side edges of the crotch region C are curved in an arc shape inward in the width direction (X direction), and the central part in the longitudinal direction (Y direction) is constricted inward as a whole. Yes. In addition, the absorbent body 34 of the diaper is composed of an absorbent core in which water absorbent polymer particles are held in an aggregate of fibers such as pulp fibers, like the absorbent body 4 of the urine pad 10. It is formed by covering with a sheet.

  The front sheet 32 of the diaper and the back sheet 33 of the diaper extend outward from the left and right side edges along the longitudinal direction (Y direction) of the diaper absorber 34 and the front and rear end edges in the longitudinal direction (Y direction), respectively. The diaper absorber 34 is bonded to each other directly by an adhesive, heat fusion, or the like at the extending portion extending outward from the periphery of the diaper absorber 34, and the diaper absorber 34 is sandwiched and fixed.

  As shown in FIG. 1, the disposable diaper 30 formed as described above has a shape in which a central portion in the longitudinal direction (Y direction) is inwardly bound as a whole. The disposable diaper 30 is a so-called unfolded diaper, and two pairs of fastening tapes 36 and 36 are provided on the left and right side edges of the dorsal region B, and on the outer surface (non-skin facing surface) of the ventral region A, A landing tape (not shown) for fastening the fastening tapes 36, 36 is provided.

The material for forming the urine pad 10 and the disposable diaper 30 provided in the wearing article 100 of the present embodiment will be described.
As the surface sheet 2 of the urine pad 10 and the diaper surface sheet 32 of the disposable diaper 30, and the absorbent body 4 of the urine pad 10 and the absorbent body 34 of the disposable diaper 30, respectively, a conventional disposable diaper and a sanitary body are respectively used. What is used for absorbent articles, such as a napkin, can be used without a restriction | limiting in particular. For example, as the surface sheet 2 and the surface sheet 32 of the diaper, a hydrophilic and liquid-permeable nonwoven fabric, a three-dimensional aperture film, or the like can be used. In addition, as the absorbent core 41 constituting the absorbent body 4 and the absorbent core constituting the absorbent body 34 of the diaper, a structure in which absorbent polymer particles are held in an aggregate of fibers such as pulp fibers can be used. The core wrap sheet 42 constituting the absorbent body 4 and the core wrap sheet constituting the absorbent body 34 of the diaper are hydrophilic sheets, for example, core wrap made of water-permeable thin paper (tissue paper) or water-permeable nonwoven fabric. A sheet or the like can be used. In addition, as the water-repellent side sheet 61 which comprises the three-dimensional gather 6, a nonwoven fabric, a woven fabric, or the laminated sheet of a nonwoven fabric and a film etc. can be used.

  In addition, as the back sheet 3 of the urine pad 10 and the back sheet 33 of the disposable diaper 30, a liquid film having poor liquid permeability (including water repellency), or a nonwoven fabric (for example, a variety of manufacturing methods) An air-through nonwoven fabric, a spunbond nonwoven fabric, a spunlace nonwoven fabric, a needle punched nonwoven fabric, or the like can be used. Here, the liquid impermeability includes liquid impermeability. Since the liquid-impervious back sheet exists between the absorber 4 and the electrode, the electrodes remain insulated from each other even when the body fluid spreads. The electrode group having an electrode for detecting bodily fluid discharge by directly contacting with a bodily fluid has to be disposed in the absorbent body, for example, on the skin-facing surface side of the back sheet of the urine collecting pad due to its nature. Although the drainage sensor sheet 20 having the electrode included in the wearing article 100 has to be disposed of every time, the electric lines of force from the electrode can be transferred from the surface of the electrode into the absorber even if the electrode does not directly contact urine. Returning to the other electrode via, and as a result, the change in impedance of the absorber due to the body fluid can be captured, so urination can be detected. Therefore, the drainage sensor sheet 20 having an electrode can be disposed on the non-skin facing surface side of the back sheet of the urine collection pad, is difficult to wet with body fluid, and can be used repeatedly in a sanitary manner.

  Further, the members constituting the urine pad 10 and the disposable diaper 30 can be fixed using an adhesive or heat fusion. As the adhesive, any adhesive that can be used for absorbent articles such as disposable diapers can be used without particular limitation. For example, a hot melt adhesive can be used. Examples of the hot melt adhesive include blocks such as styrene-isoprene-styrene block copolymer (SIS), styrene-butadiene-styrene block copolymer (SBS), and styrene-ethylene-butylene-styrene copolymer (SEBS). Copolymer-based hot melt adhesives may be mentioned. As heat fusion, if it is used for absorbent articles, such as a disposable diaper, it can use without a restriction | limiting especially, For example, a high frequency seal | sticker and an ultrasonic seal | sticker can be used.

  As the elastic member 62 for forming the three-dimensional gathers of the urine pad 10 and the diaper leg elastic member (not shown) for forming the leg gathers 35 of the disposable diaper 30, natural rubber, polyurethane, polystyrene-polyisoprene copolymer, polystyrene- A thread-like stretchable material made of a polybutadiene copolymer, a polyethylene-α-olefin copolymer such as ethyl acrylate-ethylene, or the like can be used.

The effect at the time of using the wearing article 100 of preferable embodiment which has the drainage sensor sheet | seat of this invention mentioned above is demonstrated.
As shown in FIG. 1, the drainage sensor sheet 20 of the present embodiment corresponds to a site where body fluid is discharged when, for example, urination is present in the wearing article 100 and body fluid is absorbed by the urine collecting pad 10. The impedance of the sensor elements of the electrode groups ET1 to ET4 changes significantly. That is, when body fluid discharge is large and spreads over a wide range, the impedance of a considerable number of sensor elements in the electrode groups ET1 to ET4 arranged on the skin facing surface 20u of the drainage sensor sheet 20 changes significantly. Then, the voltage control means 271 of the data collection means 27 outputs a voltage signal of the total amount of change in impedance of the plurality of sensor elements, and the information processing means 28 outputs the body fluid discharge amount, body fluid discharge time, In addition, the body fluid discharge speed can be accurately detected. In particular, since the drainage sensor sheet 20 is provided with the adhesive portion 29 on the entire surface of the skin facing surface 20u, the drainage sensor sheet 20 is firmly fixed to the non-skin facing surface of the back sheet 3 of the urine collecting pad 10. Therefore, the impedance change of the sensor elements of the electrode groups ET1 to ET4 can be detected with higher accuracy.

  Further, in the drainage sensor sheet 20 of the present embodiment, the conductive wires 22a to 22d constituting the electrode groups ET1 to ET4 are formed from the conductive yarns 222a to 222d, and the electrodes 21a to 21d constituting the electrode groups ET1 to ET4 are electrically conductive. Since the connection electrodes 231 and 241 formed from the conductive fiber sheets 211a to 211d and forming the electrode groups ET1 to ET4 are formed from the conductive fiber sheets 232 and 242 for connection electrodes, they are formed softly. Therefore, the wearing article 100 of the present embodiment is less discomfort even if the drainage sensor sheet 20 having the electrode groups ET1 to ET4 is disposed between the urine collecting pad 10 and the disposable diaper 30 and used. Usability is improved.

The drainage sensor sheet of this invention and the wearing article which has this drainage sensor sheet are not restrict | limited to the above-mentioned embodiment at all, and can be changed suitably.
For example, as shown in FIG. 1, the wearing article 100 is used by disposing a drainage sensor sheet 20 having electrode groups ET <b> 1 to ET <b> 4 between a urine pad 10 and a disposable diaper 30. Instead of the diaper 30, an undergarment such as a brief, shorts, girdle, paper pants, rehabilitation pants, or the like that can fix the urine collecting pad 10 and the drainage sensor sheet 20 to the human body may be used. Further, instead of the urine pad 10 and the disposable diaper 30, other absorbent articles such as a sanitary napkin may be used. Therefore, the wearing article having the drainage sensor sheet of the present invention can also detect the spread of body fluid other than urine, such as menstrual blood.

  As shown in FIG. 2, the drainage sensor sheet 20 of the wearing article 100 has an adhesive portion 29 disposed on the entire surface of the skin facing surface 20 u, but the electrode 21 and the conductor 22 on the skin facing surface 20 u are arranged. The adhesion part 29 may be distribute | arranged only to the part in which the electrode 21 is arrange | positioned at least. In this way, the drainage sensor sheet 20 in which the adhesive portion 29 is partially disposed is disposed between the urine collection pad 10 and the disposable diaper 30, and the electrode groups ET1 to ET4 side of the drainage sensor sheet 20 are connected to the urine collection pad 10. It is arranged and used so that it may touch. By being arranged and used in this manner, the disposable diaper 30 presses the drainage sensor sheet 20 having the electrode groups ET1 to ET4 and the urine collection pad 10, and the urine collection pad 10 comes into contact with the wearer, and the electrode The drainage sensor sheet 20 having the groups ET1 to ET4 is fixed between the disposable diaper 30 and the urine collecting pad 10. Therefore, the drainage sensor sheet 20 in which the adhesive part 29 is partially disposed is similar to the drainage sensor sheet 20 in which the adhesive part 29 is disposed on the entire surface, and the body fluid discharge amount that is an element of spreading of the body fluid, The body fluid discharge time and body fluid discharge speed can be detected with high accuracy.

  Moreover, as for the drainage sensor sheet | seat 20 of this embodiment mentioned above, the conducting wire 22a which connects electrode 21a, 21a ... and the conducting wire 22c which connects electrode 21c, 21c ... extend to the connecting electrode 231, Although connected via the terminal 23 disposed on the connection electrode 231, the connection electrode 231 may not be provided, and the conducting wire 22 a and the conducting wire 22 c may be directly connected to the terminal 23. Similarly, in the drainage sensor sheet 20 of the present embodiment described above, the conductive wire 22b connecting the electrodes 21b, 21b... And the conductive wire 22d connecting the electrodes 21d, 21d. However, the connection electrode 241 may not be provided, and the conducting wire 22b and the conducting wire 22d may be directly connected to the terminal 24.

  Moreover, although the drainage sensor sheet 20 of this embodiment mentioned above is formed in the rectangular shape, the shape of the drainage sensor sheet 20 is not limited to a rectangular shape.

  Moreover, although the electrode group is formed in the skin opposing surface 20u, the drainage sensor sheet 20 of this embodiment mentioned above may be formed in the non-skin opposing surface of the drainage sensor sheet 20. FIG.

  The wearing article having the drainage sensor sheet of the present invention may be a wearing article for adults or infants.

DESCRIPTION OF SYMBOLS 100 Wear article 10 Urine pad 2 Top sheet 3 Back sheet 4 Absorber 41 Absorbent core 42 Core wrap sheet 5 Absorbent body 6 Solid gather 61 Side sheet 20 Drainage sensor sheet ET Electrode group 21 Electrode 211 Conductive fiber sheet 212 Sheet adhesive part 213 Release paper 22 Conductor 222 Conductive thread 23, 24 Terminal 231, 241 Connection electrode 232, 242 Connection electrode conductive fiber sheet 233, 243 Through hole 27 Data collection means 28 Information processing means 30 Disposable diaper 32 Diaper Top sheet 33 Back sheet 34 of diaper Absorbent body 36 of diaper Fastening tape 7 Paper 7f Arrangement pattern figure 8 Snap 81 Male member 82 Female member A Abdominal area, B Dorsal area, C Inseam area

Claims (9)

A drainage sensor sheet for a worn article that detects the spread of bodily fluids based on impedance changes between a plurality of electrode groups,
The drainage sensor sheet includes a plurality of the electrode groups that maintain a mutually insulated state when body fluid spreads on the absorbent body of the wearing article disposed on one surface thereof,
Each of the electrode groups is composed of at least two electrodes connected to each other via a conducting wire,
The conducting wire is made of conductive yarn,
The electrode comprises a mesh-like conductive fiber sheet,
In the plurality of electrode groups, an adhesive portion having a gap is disposed on one surface of the drainage sensor sheet, the conductive yarn is disposed adjacent to the adhesive portion, and is adjacent to the conductive yarn. A drainage sensor sheet formed by arranging the conductive fiber sheet. The drainage sensor sheet according to claim 1, wherein the conductive fiber sheet is a sheet woven with a synthetic resin monofilament yarn whose surface is plated. The adhesive portion may drainage sensor sheet according to the drainage claim 1 or 2 are arranged over the entire surface of one side of the sensor sheet. The wearing article includes a liquid-permeable top sheet, a liquid-low-permeable back sheet, and an absorbent article having an absorber disposed between these two sheets,
The drainage sensor sheet according to any one of claims 1 to 3, wherein the drainage sensor sheet is a separate sheet from the absorbent article disposed on the non-skin facing surface side of the back sheet. . The absorbent article is a urine pad;
The drainage sensor sheet, a disposable diaper that is disposed non-skin facing side of the incontinence pad, according to claim 4 which is a sheet of separate independent separate disposed between said incontinence pad Drainage sensor sheet. A wearing article having the drainage sensor sheet according to any one of claims 1 to 3 ,
The wearing article includes a liquid-permeable top sheet, a liquid-low-permeable back sheet, and an absorbent article having an absorber disposed between these two sheets,
The drained sensor sheet is a worn article that is a separate sheet from the absorbent article that is disposed closer to the non-skin facing surface than the back sheet. The absorbent article is a urine pad;
The wearing article according to claim 6 , wherein the drainage sensor sheet is a separate and independent sheet disposed between the disposable diaper disposed on the non-skin facing surface side of the urine collection pad and the urine collection pad. . A method for producing a drainage sensor sheet for a worn article that detects the spread of a body fluid based on an impedance change between a plurality of electrode groups,
The arrangement pattern figure which described the arrangement plan position of the lead which constitutes the electrode group beforehand, the arrangement position of the electrode which constitutes the electrode group, and the arrangement plan position of the terminal for connecting the electrode group to electronic equipment beforehand Made,
Next, on the arrangement pattern diagram, the base sheet in which the adhesive portion is disposed on the entire surface is disposed so that the other surface side of the base sheet on which the adhesive portion is not disposed is opposed,
Next, on one surface of the base sheet, conductive yarns serving as the conductors are arranged following the planned placement positions of the conductors in the arrangement pattern diagram that can be seen through the base sheet, and the adhesive parts are interposed therebetween. Fixed,
Next, a conductive fiber that becomes the electrode following the planned placement position of the electrode in the placement pattern diagram that is seen through the base material sheet on the conductive thread fixed on one surface of the base sheet. Place the sheet and fix it through the adhesive part,
Next, a through hole that penetrates the base sheet is formed at a position where the terminal is to be arranged in the arrangement pattern diagram that is seen through the base sheet, and the terminal is attached to the through hole,
Manufacture of a drainage sensor sheet comprising the electrode group consisting of at least two electrodes connected to each other via the conducting wires while maintaining a state of being insulated from each other when the body fluid spreads Method. In the conductive fiber sheet, a sheet adhesive part is arranged on the entire surface of the conductive fiber sheet, and a release paper covering the sheet adhesive part is arranged in advance,
The method for producing a drainage sensor sheet according to claim 8 , wherein the other surface side of the conductive fiber sheet on which the sheet adhesive portion is not disposed is opposed to one surface of the base sheet.

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