JP6301773B2 - Wearing article - Google Patents

Description

  The present invention relates to a worn article for adults or infants.

  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 absorbent article described in Patent Document 1, since an open circuit is formed by the signal device and the plurality of conductive elements, when the body fluid is excreted in the absorbent article, the open circuit is closed. A signaling device can be activated to signal the excretion of body fluids. 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, there was a need to measure the amount of urination more accurately. And in patent document 2, although what has arrange | positioned the electrode on the film surface which is an insulator as several electrodes with which a detection apparatus is equipped is described, it is described at all about the relationship between an electrode and the conducting wire which connects electrodes. Absent.

  Therefore, this invention is providing the wearing article which can eliminate the fault which the prior art mentioned above has.

  The present invention is 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 electrode group is formed on one sheet surface of a plurality of sheets constituting the wearing article. It is formed and consists of at least two electrodes that are insulated from each other when the body fluid spreads and is connected to each other via a conductive wire, and the conductive wire has a resistance value that is greater than the resistance value of the electrode. A low wearing article is provided.

  According to the present invention, the spread of body fluid can be measured with higher accuracy.

It is a perspective view of a wearing article which is a 1st embodiment of the present invention. FIG. 2 is a partially cutaway plan view of a state in which the wearing article shown in FIG. 1 is extended to remove another urine pad and the other sheet is exposed from the skin facing surface side. 3 is a cross-sectional view taken along line III-III in FIG. 4 is an enlarged cross-sectional view of another sheet shown in FIG. FIG. 5 is a block diagram illustrating a detailed configuration example of the data collection unit. FIG. 6 is a block diagram showing a detailed configuration example of the information processing means. FIG. 7 is a partially cutaway plan view of the second embodiment of the present invention, in which the wearing article is extended and the other sheet is exposed except for the urine collecting pad as seen from the skin facing surface side (FIG. 2). Equivalent figure). FIG. 8 is a partially broken plan view of the third embodiment of the present invention, in which the wearing article is extended and the other sheet is exposed except for the urine collecting pad as seen from the skin facing surface side (FIG. 2). Equivalent figure). FIG. 9 is a partially cutaway plan view of the fourth embodiment of the present invention, in which the wearing article is extended and the other sheet is exposed except for the urine collecting pad as seen from the skin facing surface side (FIG. 2). Equivalent figure). FIG. 10 is a diagram in which the relationship between the amount of injected physiological saline and the amount of change in capacitance sensor output is measured in the example.

Hereinafter, the wearing article of the present invention will be described based on the preferred first embodiment with reference to the drawings.
The wearing article of the present invention detects the spread of body fluid based on the impedance change between a plurality of electrode groups. As shown in FIG. 1, a wearing article 100 </ b> A according to a first preferred embodiment of the present invention includes a urine collection pad 10 (absorbent article) including an absorbent main body 5 having a vertically long absorbent body 4, and a urine collection pad 10. The disposable diaper 30 disposed on the non-skin facing surface side, and a separate and separate sheet 20 disposed between the disposable diaper 30 and the urine collecting pad 10 are provided.

As shown in FIG. 1, the wearing article 100 </ b> A can be divided into a ventral region A, a dorsal 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 the abdomen area A. 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 length of the urine collecting pad 10, the separate sheet 20, or the disposable diaper 30. It is also the same direction as the 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 collecting pad 10, the separate sheet 20, or the disposable diaper 30. The “Z direction” is also the same direction as the thickness of the urine pad 10, the separate 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 separate sheet 20, or the disposable diaper 30.

  The urine pad 10 of the wearing article 100A of the first embodiment includes a liquid permeable top sheet 2 disposed on the skin facing surface side, and a liquid permeable 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 </ b> A of the first embodiment has a longitudinal direction (Y direction) of the absorbent main body 5 on the skin facing surface 5 u side of the absorbent main body 5. The water-repellent side sheets 61 are disposed and fixed on both side portions 5s and 5s, respectively. The free end portion 61f of the side sheet 61 has a three-dimensional shape that extends in the longitudinal direction (Y direction) of the absorbent main body 5. The elastic member 62 for gathering 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 elastic member 62 for three-dimensional gathering. 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 separate sheet 20 of the wearing article 100 </ b> A of the first embodiment is arranged on the non-skin facing surface side of the back sheet 3 of the urine collection pad 10, and the urine collection pad 10 and the disposable diaper 30 is a separate and independent sheet. In the first embodiment, the separate sheet 20 is formed in a rectangular shape that is long in the longitudinal direction (Y direction). When detecting the spread of the body fluid, the separate sheet 20 is preferably arranged at least over the crotch region C. In the wearing article 100A of the first embodiment, the outer peripheral edge is the urine collecting pad 10. It is narrower than the outer peripheral edge of the urine collecting pad 10 and narrower than the outer peripheral edge of the absorbent body 4 of the urine collecting pad 10. More specifically, in the longitudinal direction (Y direction), the separate 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 in the width direction (X direction). The length of the absorbent body 4 of the urine collecting pad 10 is shorter than the length in the width direction (X direction).

In the wearing article of the present invention, the electrode group is formed on the surface of one of the plurality of sheets constituting the wearing article, and maintains a state of being insulated from each other when the body fluid spreads. It consists of at least two electrodes connected via a conducting wire.
In the wearing article 100A of the first embodiment, the separate sheet 20 corresponds to “one sheet” among a plurality of sheets constituting the wearing article. More specifically, each of the electrode groups ET, when detecting the spread of the body fluid, extends over at least the crotch region C, and preferably 2 to 32 are formed in the X direction. More preferably, it is individually formed. In the wearing article 100A of the first embodiment, on the skin facing surface 20u of the separate sheet 20, as shown in FIG. 2, from the entire area of the crotch region C to a part of the ventral region A and the dorsal region B, Four electrode groups ET1 to ET4 are 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. Thus, each electrode group ET1 to ET4 is formed with a plurality of electrodes 21, and the electrode columns correspond to a plurality of columns (in the first embodiment, corresponding to the four electrode groups ET1 to ET4). 4 rows), a plurality of sensor elements constituted by a pair of mutually insulated electrodes and a gap between them are formed in a wide range of the skin facing surface 20u of another 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 wearing article 100A of the first embodiment, as shown in FIG. 4, the electrodes 21 constituting each of the electrode groups ET1 to ET4 are formed by applying a conductive material to the skin facing surface 20u of the separate sheet 20. Yes. Moreover, the conducting wire 22 which comprises each electrode group ET1-ET4 has the electroconductive application part 221 formed by apply | coating a conductive material to the skin opposing surface 20u of the separate sheet 20, and the electroconductive thread | yarn 222. . The conductive wire 22 is formed by arranging a conductive yarn 222 on the conductive coating portion 221. Specifically, the conductive wire 22 is formed by arranging a conductive thread 222 so as to connect the conductive coating portion 221, and the conductive thread 222 is sewn to another sheet 20. The formation of the electrode 21 and the conductive wire 22 in the wearing article 100A of the first embodiment will be described in detail later.

  As shown in FIG. 2, it is preferable that 2 to 50 electrodes 21 are arranged in the longitudinal direction (Y direction) of the separate sheet 20, and 8 electrodes 21 are arranged in the wearing article 100A of the first embodiment. ing. 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,. Yes. Moreover, it is preferable that 1 to 16 electrodes 21 are arranged in the width direction (X direction) of the separate sheet 20, and two electrodes 21 are arranged in the wearing article 100A of the first embodiment. By arranging in this way, in the first embodiment, for convenience, 14 sensor elements are configured. The electrodes 21 adjacent 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, but in the wearing article 100A of the first embodiment, with respect to the positive electrode. The positive electrode and the negative electrode are arranged in a negative electrode relationship. When either positive or negative half wave, rectangular wave, triangular wave, or the like is applied, one electrode may be grounded.

  Specifically, as shown in FIG. 2, in the wearing article 100A of the first embodiment, four 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 separate sheet 20. The four electrodes 21a of the electrode group ET1 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 longitudinal direction (Y direction) of the separate sheet 20. They are arranged at equal intervals. And the four electrodes 21a of the electrode group ET1 are connected via the linear conducting wire 22a distribute | arranged to the width direction (X direction) outer side from each electrode 21a. The conductive wire 22a is formed by sewing the conductive yarn 222a linearly on the separate sheet 20 within the range of the linear conductive coating portion 221a arranged on the outer side in the width direction (X direction) than each electrode 21a. ing.

  Further, the four electrodes 21b of the electrode group ET2 are negative electrodes, and as shown in FIG. 2, the separate 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 the same position as the electrode group ET1 in the width direction (X direction) and between the electrodes 21a, 21a of the adjacent electrode group ET1 in the longitudinal direction (Y direction). The four electrodes 21b of the electrode group ET2 are connected via linear conductive wires 22b arranged on the inner side (close to the center line CL) in the width direction (X direction) than each electrode 21b. The conductive wire 22b is formed by sewing the conductive yarn 222b linearly to the other sheet 20 within the range of the linear conductive coating portion 221b arranged on the inner side in the width direction (X direction) than each electrode 21b. ing.

  The four electrodes 21c of the electrode group ET3 are positive electrodes, and the width of the separate sheet 20 extends from the entire crotch region C to a part of the ventral region A and the dorsal region B as shown in FIG. In the direction (X direction), the electrodes are arranged at equal intervals in the longitudinal direction (Y direction) with a gap from the electrode group ET1. The four electrodes 21c of the electrode group ET3 and the four electrodes 21a of the electrode group ET1 are arranged symmetrically with respect to the center line CL. And the four electrodes 21c of the electrode group ET3 are connected via linear conducting wires 22c arranged on the outer side in the width direction (X direction) than each electrode 21c. The conductive wire 22c is formed by sewing the conductive thread 222c linearly on the other sheet 20 within the range of the linear conductive coating portion 221c arranged on the outer side in the width direction (X direction) than each electrode 21c. ing.

  Further, the four electrodes 21d of the electrode group ET4 are negative electrodes, and are separated from the entire crotch region C to part of the ventral region A and the dorsal region B as shown in FIG. Are arranged at the same position as the electrode group ET3 in the width direction (X direction) and between the electrodes 21c and 21c of the adjacent electrode group ET3 in the longitudinal direction (Y direction). The four electrodes 21d of the electrode group ET4 and the four electrodes 21b of the electrode group ET2 are arranged symmetrically with respect to the center line CL. The four electrodes 21d of the electrode group ET4 are connected to each other through linear conductors 22d arranged on the inner side (close to the center line CL) in the width direction (X direction) than each electrode 21d. The conductive wire 22d is formed by sewing the conductive yarn 222d linearly on the other sheet 20 within the range of the linear conductive coating portion 221d arranged on the inner side in the width direction (X direction) than each electrode 21d. ing.

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 preferable, and still 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 side facing each other among the straight lines extending in parallel in the equally divided width direction (X direction). 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. Means the distance between the straight line obtained by dividing the area of ¼ into 1/4 and the end facing the other electrode. In the wearing article 100A of the first embodiment, since the shape of the electrode is rectangular, the position is the same as a quarter of the length in the longitudinal direction (Y direction) of the electrode.
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 100 mm or more and 620 mm or less, and more preferably 180 mm or more and 520 mm or less. 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 10 mm. It is preferable that it is 30 mm or less.
The shape (design), size, and arrangement interval of each electrode 21 are not limited to the above embodiment.

  In the wearing article of the present invention, the resistance value of the conductive wire is lower than the resistance value of the electrode. More specifically, in the wearing article 100A of the first embodiment, the resistance value of the conducting wire 22a constituting the electrode group ET1 is lower than the resistance value of the electrode 21a from the viewpoint of measuring the spread of body fluid with higher accuracy. ing. Specifically, the relationship between the resistance value (R1) of the conductive wire 22a and the resistance value (R2) of the electrode 21a is preferably R1 = 0.001 to 0.95 × R2, and R1 = 0.01 to More preferably, it is 0.6 × R2. The same applies to the relationship between the resistance values of the conductive wires 22b to 22d constituting the electrode groups ET2 to ET4 and the resistance values of the electrodes 21b to 21d constituting the electrode groups ET2 to ET4. Here, the resistance value of the conducting wire means a value obtained by dividing the resistance value between two predetermined points on the conducting wire by the distance between the two points, and the resistance value of the electrode means between the two points on the electrode surface. A value obtained by dividing the resistance value by the distance between the two points. Specifically, it is measured by the method described later.

Specific values of the resistance values R1 and R2 of the conducting wire 22a and the electrode 21a are as follows.
The resistance value (R1) of the lead wire 22a constituting the electrode group ET1 is preferably 0.05Ω / cm or more and 175Ω / cm or less, more preferably 0.05Ω / cm or more and 47.5Ω / cm or less. 0.05Ω / cm or more and 16.5Ω / cm or less is particularly preferable. The same applies to the resistance values of the conductive wires 22b to 22d constituting the electrode groups ET2 to ET4.
The resistance value (R2) of the electrode 21a constituting the electrode group ET1 is preferably 0.05Ω / cm or more and 4370Ω / cm or less, and more preferably 0.05Ω / cm or more and 1094Ω / cm or less. 0.05Ω / cm or more and 291.5Ω / cm or less is particularly preferable. The same applies to the resistance values of the electrodes 21b to 21d constituting the electrode groups ET2 to ET4.
The resistance value (R1) of the conducting wire 22 and the resistance value (R2) of the electrode 21 use a digital multimeter manufactured by Custom Co., Ltd. (MODEL: CDM-12D). For example, the resistance value of the conducting wire 22 is the value of the digital multimeter. In the case of a sheet in which two tester rods (test probes) are arranged at intervals of 2 cm and measured by passing the conductor 22 or a conductive thread is sewn on the conductive coating portion, two of the digital multimeter The tester rods (test probes) are arranged at intervals of 2 cm and measured. When there is no length of 2 cm, prepare the same material with a length of 2 cm or more and measure. The measurement is performed three times at different sites, and a value (Ω / cm) obtained by dividing the average value by 2 is defined as the resistance value (R1) of the conductive wire 22. As for the resistance value (R2) of the electrode 21, the digital multimeter is used, and the same configuration as the electrode 21 is used, and the vicinity of the center in the width direction of the electrode surface of three rectangular sheets having a size of 22 mm to 25 mm × 22 mm to 25 mm is 2 A tester bar is vertically applied at intervals of 2 cm, and the average value divided by 2 (Ω / cm) is defined as the resistance value (R2) of the electrode 21.

In the wearing article 100A of the first embodiment, the electrodes 21a to 21d of the electrode groups ET1 to ET4 are formed by applying a conductive material to one sheet of a material conventionally used for wearing articles. Yes. That is, in the wearing article 100A of the first embodiment, the electrodes 21a to 21d of the four electrode groups ET1 to ET4 are formed on the skin facing surface 20u of the separate sheet 20 by applying a conductive material.
Moreover, in the wearing article 100A of 1st Embodiment, the electrically conductive application parts 221a-221d which comprise each conducting wire 22a-22d of electrode group ET1-ET4 are the same sheets as the sheet | seat in which each electrode 21a-21d is formed, It is formed by applying a conductive material. That is, in the wearing article 100A of the first embodiment, the conductive application portions 221a to 221d of the conductive wires 22a to 22d of the four electrode groups ET1 to ET4 apply the conductive material to the skin facing surface 20u of the separate sheet 20, respectively. And it is formed linearly.

Hereinafter, the formation method of electrode group ET1-ET4 in 100 A of wearing articles of 1st Embodiment is explained in full detail.
First, as shown in FIGS. 2 and 4, the insulating ink is printed in a region wider than the region where all the electrodes ET <b> 1 to ET <b> 4 are to be formed on the skin facing surface 20 u of the rectangular separate sheet 20 extending in the Y direction. To form a rectangular lower insulating layer 25 that is long in the Y direction. Examples of the insulating ink include acrylic resins, urethane resins, epoxy resins, polyimide resins, and polyethylene resins.

  Next, ink made of a conductive material is applied to the skin facing surface of the formed lower insulating layer 25 by printing to form the conductive application portion 221 and the electrode 21 of the conductive wire 22. That is, within the range of the outer peripheral edge of the lower insulating layer 25, four electrodes 21a of the electrode group ET1, four electrodes 21b of the electrode group ET2, four electrodes 21c of the electrode group ET3, and 4 of the electrode group ET4 Ink made of a conductive material is printed at a position where the individual electrodes 21d are to be formed. At the same time, in the range of the outer peripheral edge of the lower insulating layer 25, the electrodes 21a and 21c are connected to the outside in the width direction (X direction) from the electrodes 21a and to the outside in the width direction (X direction) from the electrodes 21c. In this manner, the linear conductive coating portions 221a and 221c are printed, respectively. At the same time, within the range of the outer peripheral edge of the lower insulating layer 25, the electrodes 21b and 21d are also arranged on the inner side in the width direction (X direction) than the electrodes 21b and on the inner side in the width direction (X direction) than the electrodes 21d. The linear conductive coating portions 221b and 221d are printed so as to be connected to each other.

  Examples of the conductive material of the ink include those containing carbon powder as a main component, or those containing a metal powder such as silver or copper, and are metal detectors because they are not expensive (not cheap) or metal. From the viewpoint of preventing malfunctions such as security gates and crime prevention gates, those containing carbon powder as a main component are preferably used. Examples of the ink made of a conductive material include a mixture in which carbon nanotubes, a dispersant, a binder, a resin, a curing agent, and the like are mixed. The conductive material of the electrode 21 and the conductive material of the conductive coating portion 221 of the conductive wire 22 are preferably the same, but may be different. If they are different, after applying the ink made of a conductive material by printing to form the electrode 21, the ink made of a different conductive material is applied by printing to form the conductive coating portion 221 of the conductor 22 or made of the conductive material. After the ink is applied by printing to form the conductive application portion 221 of the conductor 22, the electrode 21 can be formed by applying an ink made of a different conductive material by printing. Similarly, even when the conductive material is the same, the electrodes and the conductive wires can be formed by a method of sequentially printing each part.

  When the electrode 21 or the conductive coating portion 221 is formed by applying ink made of a conductive material by printing, it may be printed only once, but from the viewpoint of body fluid discharge detection sensitivity, it may be printed multiple times. Good. The number of times of repeated printing is preferably 2 to 10 times.

  Next, as shown in FIG. 4, an insulating ink is applied by printing on the skin facing surfaces of the conductive coating portions 221 a to 221 d so as to cover the conductive coating portions 221 a to 221 d, and the upper insulating layer 26 is formed. Form. As the insulating ink for the upper insulating layer 26, the same ink as the insulating ink for the lower insulating layer 25 can be used. In the wearing article 100A of the first embodiment, the lower insulating layer 25 is provided on the non-skin facing surface of all the electrodes 21 and all the conductive coating portions 221a to 221d, and the upper insulating layer 26 is provided on the skin facing surface of all the conductive coating portions 221a to 221d. And are arranged.

  Next, the conductive yarns 222a to 222d are arranged in the upper portion within the range of the conductive coating portions 221a to 221d so that the conductive yarns 222a to 222d are arranged in the formed conductive coating portions 221a to 221d. The insulation layers 26, the conductive coating portions 221a to 221d, the lower insulation layer 25, and the separate sheet 20 are sewn linearly to the separate sheet 20 to form the conductive wires 22a to 22d of the electrode groups ET1 to ET4. .

  Examples of the conductive yarn 222 include a synthetic fiber made by mixing metal or carbon particles that conduct electricity, a fiber whose surface is coated with metal or carbon, a metal fiber such as stainless steel, and the like. Specifically, for the conductive yarn 222, trade names “Super α Fiber”, “Stainless Steel Fiber”, “Sunderron Dyna Fiber” manufactured by Ken A Co., Ltd., Conductive Threading of Statex Products & Vertriebs GmbH, etc. are used. .

  As described above, in the wearing article 100A according to the first embodiment, after the insulating ink is applied on the formed conductive coating portions 221a to 221d to form the upper insulating layer 26, the conductive coating portions are formed. Within the range of 221a to 221d, the conductive yarns 222a to 222d are sewn to another sheet 20 to form the conductive wires 22a to 22d of the electrode groups ET1 to ET4. However, after the conductive yarns 222a to 222d are arranged on the conductive coating portions 221a to 221d to form the conductive wires 22a to 22d of the electrode groups ET1 to ET4, the insulating wires are covered so as to cover the conductive wires 22a to 22d. The upper insulating layer 26 may be formed by applying ink.

  Each electrode group is connected to a terminal for connecting to an electronic device. Specifically, as shown in FIG. 2, in a ventral region A of another sheet 20 having an electrode group, a lead wire 22a that connects the electrodes 21a, 21a,... Of the electrode group ET1 and an electrode 21c of the electrode group ET3, The lead wires 22c connecting the wires 21c... That is, the electrode group ET1 and the electrode group ET3 are connected to the terminal 23. Further, in the ventral region A of another sheet 20 having an electrode group, a conductor 22b that connects the electrodes 21b, 21b,... Of the electrode group ET2, and a conductor 22d that connects the electrodes 21d, 21d,. Are continuous via a terminal 24. That is, the electrode group ET2 and the electrode group ET4 are connected to the terminal 24. 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. A member is mentioned and metal snaps are used in the wearing article 100A of the first embodiment. The data collecting means 27, which is an electronic device, is fixed to the ventral region A of another sheet 20 having an electrode group via the metal snap. If the terminal 23 or 24 is not a male or female member, a conductive terminal is clipped, a stapler, a string, a crab, a kanikan, a clasp such as hikiwa, a conductive adhesive, a conductive double-sided adhesive tape, heat, a conductive fiber / thread, etc. It is also possible to connect by using a method such as tying, hooking, or sewing. The position of the terminal is not limited to the ventral side, and may not be on the separate sheet 20.

The other sheet 20 to which the ink is applied is made of a material conventionally used for wearing articles, specifically, non-woven fabric such as spunbond, spunlace, air-through, woven fabric, knitted fabric, plastic, etc. The film etc. which are made are mentioned. In addition, when using a spunbonded nonwoven fabric as the separate sheet 20, the basis weight thereof 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.

  Examples of printing that applies ink include inkjet printing, rotary printing, flexographic printing, screen printing, and gravure printing.

  As described above, in the wearing article 100A of the first embodiment, since the plurality of electrode groups ET1 to ET4 of the separate sheet 20 are formed by applying ink, the separate sheet 20 is formed softly as a result. Specifically, the bending rigidity value in the MD direction of the sheet is preferably 10 g or more and 80 g or less, more preferably 15 g or more and 60 g or less, and the bending rigidity value in the CD direction of the sheet is preferably 5 g. It is 60 g or less, more preferably 10 g or more and 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 separate 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 / kPa · when the separate sheet 20 of the raw material has air permeability. or less, and 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.

  In the wearing article 100A of the first embodiment, since four electrode groups ET1 to ET4 each having four electrodes 21 are formed on the skin facing surface 20u of the separate sheet 20, a plurality of sensor elements are separate sheets. 20 skin facing surfaces 20u. Each sensor element changes the impedance between the electrode 21a (positive electrode) of the electrode group ET1 and the electrode 21b (negative electrode) of the electrode group ET2, and the electrode 21c (positive electrode) and electrode group ET4 of the electrode group ET3. Change in the impedance between the electrode 21d (negative electrode) of the electrode group, the change in impedance between the electrode 21a (positive electrode) of the electrode group ET1 and the electrode 21d (negative electrode) of the electrode group ET4, and the electrode of the electrode group ET3 The change in impedance between 21c (positive electrode) and the electrode 21b (negative 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. For example, 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 separate 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. 5, 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 separate 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), a ROM (Read Only Memory), a RAM (Random Access Memory), an HDD (Hard Disk Drive), and the like. By operating, as shown in FIG. 6, 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 separate sheet 20 having the electrodes configured as described above, the data collecting means 27, and the information processing means 28, the data collected by the data collecting means 27 is acquired, and the information processing means 28 causes the body fluid to spread. The body fluid discharge amount, body fluid discharge time, and body fluid discharge speed can be calculated.

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.

A material for forming the urine pad 10 and the disposable diaper 30 included in the wearing article 100A of the first embodiment will be described.
The surface sheet 2 of the urine pad 10 and the 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 have been conventionally used as disposable diapers and sanitary diapers, respectively. 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. However, the separate sheet 20 having the electrode included in the wearing article 100A has a line of electric force from the electrode passing through the absorber from the surface of the electrode even if the electrode does not directly contact urine. Returning to the other electrode via this, and as a result, it is possible to capture the change in the impedance of the absorber due to the body fluid, so urination can be detected. Therefore, the separate sheet 20 having electrodes can be arranged on the non-skin facing surface side than the back sheet of the urine collecting pad, is difficult to wet with body fluid, and can be used repeatedly hygienically.

  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 100 A of wearing articles of 1st Embodiment of this invention mentioned above is demonstrated.
As shown in FIG. 1, the wearing article 100 </ b> A according to the first embodiment includes another sheet 20 having electrode groups ET <b> 1 to ET <b> 4 between the urine collecting pad 10 and the disposable diaper 30, It is used by being arranged so as to be in contact with the pad 10. By being arranged and used in this manner, the disposable diaper 30 presses the separate sheet 20 having the electrode groups ET1 to ET4 and the urine collecting pad 10, and the urine collecting pad 10 comes into contact with the wearer, and the electrode group ET1. Another sheet 20 having ET4 is fixed between the disposable diaper 30 and the urine collecting pad 10. And, for example, when there is urination in the wearing article 100A and the body fluid is absorbed by the urine collecting pad 10, the impedance of the sensor element of the separate sheet 20 having the electrode groups ET1 to ET4 corresponding to the site where the body fluid is discharged is obtained. It changes a lot. 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 changes significantly. Then, the voltage control means 271 of the data collection means 27 outputs a voltage signal corresponding to the total change amount of impedance of the plurality of sensor elements (capacitance sensor output change amount), and the information processing means 28 causes the spread of the body fluid. It is possible to accurately detect the body fluid discharge amount, the body fluid discharge time, and the body fluid discharge speed, which are elements. Here, the resistance values of the conducting wires 22a to 22d constituting the electrode groups ET1 to ET4 are set to be lower than the resistance values of the electrodes 21a to 21d constituting the electrode groups ET1 to ET4. Therefore, the amount of change in impedance in a wide range can be detected from the electrode in the region close to the terminals 23 and 24 to the electrode in the far region as well as the body fluid in the urine collecting pad 10, thereby further expanding the body fluid. It can measure with high accuracy.

  Moreover, as for the wearing article 100A of 1st Embodiment, the electrode 21 of several electrode group ET1-ET4 which the separate sheet | seat 20 has is formed by apply | coating an ink. Further, the conductive wires 22 of the electrode groups ET1 to ET4 are formed by disposing conductive yarns 222 on a conductive coating portion 221 formed by applying ink. Therefore, the separate sheet 20 is softly formed as a whole, and even when the separate sheet 20 having the electrode groups ET1 to ET4 is disposed between the urine collecting pad 10 and the disposable diaper 30 and used, there is little discomfort. , The feeling of use improves.

  Moreover, in the wearing article 100A of the first embodiment, conductive yarns 222 that constitute the conductive wires 22 of the plurality of electrode groups ET1 to ET4 included in the separate sheet 20 are sewn to the separate sheet 20. Therefore, even if the electrode 21 of the electrode group ET1 to ET4 and the conductor 22 of the electrode group ET1 to ET4 are in firm contact with each other and the wearer of the wearing article 100A moves, a plurality of sensors are transmitted through the conductors 22a to 22d. It is easy to output a voltage signal of the total change amount of the element impedance (capacitance sensor output change amount).

  In addition, another sheet 20 of the wearing article 100A of the first embodiment is formed by applying ink to the electrodes 21 of the plurality of electrode groups ET1 to ET4. Further, since the conductive coating portion 221 constituting the conductive wire 22 of the electrode groups ET1 to ET4 is formed by applying ink and the conductive yarn 222 constituting the conductive wire 22 is formed of yarn, the air permeability is maintained. ing. Therefore, even if another sheet 20 having the electrode groups ET1 to ET4 is disposed between the urine collecting pad 10 and the disposable diaper 30, the air permeability is hardly hindered and the usability is improved.

  In addition, in the wearing article 100A of the first embodiment, the electrode 21 and the conductive application part 221 are formed by applying ink to the separate sheet 20 by printing, so the shape, design, and color of the electrode 21 and the conductive application part 221 are the same. Etc. can be freely redesigned.

The wearing article of the present invention is not limited to the wearing article 100A of the first embodiment described above, and can be appropriately changed.
Specifically, the conductive wires 22 constituting the electrode groups ET1 to ET4 of the separate sheet 20 included in the wearing article 100A of the first embodiment have the conductive yarns 222 arranged on the conductive application portions 221 formed by applying ink. However, like the separate sheets 20 included in the wearing articles 100B to 100D of the second to fourth embodiments, the conductive wires 22 constituting the electrode groups ET1 to ET4 are formed only from the conductive yarn 222. It may be.

Hereinafter, the separate sheet | seat 20 with which the wearing articles 100B-100D of 2nd-4th embodiment are provided specifically is demonstrated.
Regarding the separate sheets 20 included in the wearing articles 100B to 100D of the second to fourth embodiments, differences from the separate sheets 20 included in the wearing article 100A of the first embodiment will be mainly described, and similar components will be the same. The reference numerals are attached and the description is omitted. For the constituent elements that are not particularly mentioned, the description regarding the wearing article 100A of the first embodiment is appropriately applied. Moreover, about the effect of the wearing article 100B of 2nd-4th embodiment, the effect different from the wearing article 100A of 1st Embodiment is demonstrated. About the others, it is the same as that of 100 A of wearing articles, and description of the effect of 100 A of wearing articles is applied suitably.

  As shown in FIGS. 7 to 9, the other sheets 20 included in the wearing articles 100 </ b> B to 100 </ b> D of the second to fourth embodiments have six electrodes 21 arranged on each of the four electrode groups ET <b> 1 to ET <b> 4. Yes. The six electrodes 21 of each of the electrode groups ET1 to ET4 are formed in the same size. Each electrode 21 is formed by arranging a cloth coated with ink on the skin facing surface 20 u of another sheet 20. Here, as shown in FIG. 7, the plurality of electrodes 21 of the separate sheet 20 included in the wearing article 100 </ b> B of the second embodiment are each formed in a rectangular shape that is long in the same longitudinal direction (Y direction). As shown in FIG. 8, the plurality of electrodes 21 of the separate sheet 20 included in the wearing article 100 </ b> B of the third embodiment are each formed in a rectangular shape that is long in the same width direction (X direction). The plurality of electrodes 21 of the separate sheet 20 included in the wearing article 100D are each formed in the same hexagonal shape as shown in FIG. The six electrodes 21a of the electrode group ET1 of the separate sheets 20 included in the wearing articles 100B to 100D of the second to fourth embodiments and the six electrodes 21b of the electrode group ET2 are shifted in the width direction (X direction). The six electrodes 21c of the electrode group ET3 and the six electrodes 21d of the electrode group ET4 are arranged so as to be shifted in the width direction (X direction).

  As shown in FIGS. 7 to 9, in the other sheets 20 included in the wearing articles 100 </ b> B to 100 </ b> D of the second to fourth embodiments, the conductor 22 a of the electrode group ET <b> 1 is closer to the outer side in the width direction (X direction) of each electrode 21 a. In addition, the conductive thread 222a is formed by sewing the other sheet 20 in a straight line. Further, the conductive wire 22b of the electrode group ET2 is formed by sewing the conductive yarn 222b linearly on the other sheet 20 closer to the inner side in the width direction (X direction) of each electrode 21b. Further, the conductive wire 22c of the electrode group ET3 is formed by sewing the conductive yarn 222c linearly on the separate sheet 20 on the outer side in the width direction (X direction) of each electrode 21c. Further, the conductive wire 22d of the electrode group ET4 is formed by sewing the conductive yarn 222d linearly on the other sheet 20 closer to the inner side in the width direction (X direction) than each electrode 21d. Since the conducting wire 22 of the separate sheet 20 included in the wearing articles 100B to 100D of the second to fourth embodiments is formed only from the conductive yarn, it is easy to create and inexpensive. In addition, although the conducting wire 22 is formed by sewing the conductive thread to the separate sheet 20, it is not necessary to sew, and it may be arranged so as to be in contact with the electrode 21.

  The wearing article of the present invention is not limited to the wearing articles 100A to 100D of the first to fourth embodiments described above, and can be appropriately changed. Moreover, each component in the wearing article 100A-100D of the above-mentioned 1st-4th embodiment can be implemented suitably combining in the range which does not impair the meaning of this invention.

  For example, the wearing article 100A described above is used by disposing another sheet 20 having electrode groups ET1 to ET4 between the urine pad 10 and the disposable diaper 30 as shown in FIG. Instead of 30, it is also possible to use an underwear such as a brief, shorts, girdle, paper pants, rehabilitation pants, or the like that can fix the urine collecting pad 10 and the separate sheet 20 to the human body.

  In the wearing article 100A described above, the urine pad 10, the separate sheet 20, and the separate sheet 20 of the disposable diaper 30 correspond to "one sheet" among a plurality of sheets constituting the worn article. However, it is not limited to that. Specifically, as “one sheet” of the plurality of sheets constituting the wearing article, the top sheet 2, the back sheet 3, the core wrap sheet 42 of the absorbent body 4 constituting the urine collecting pad 10, or The side sheet 61 of the three-dimensional gather 6, or the top sheet 32 of the diaper constituting the disposable diaper 30, the back sheet 33 of the diaper, the core wrap sheet constituting the absorbent body 34 of the diaper, or the side sheet of the three-dimensional gather (not shown). (Not shown). When it is disposed in a place where it touches body fluid, it is preferable to provide an insulating layer or a waterproof layer on the skin facing surface so that the body fluid does not touch the sheet directly. In addition, as "one sheet", from the viewpoint of preventing the contamination of the electrode group ET, another sheet 20, which is disposed on the non-skin facing surface side of the urine collecting pad 10 from the liquid-impermeable back surface sheet 3, A diaper top sheet 32 and a diaper back sheet 33 constituting the disposable diaper 30 are preferable.

  Moreover, in the wearing article 100A described above, the separate sheet 20 is formed in a rectangular shape, but the shape of the separate sheet 20 is not limited to a rectangular shape.

  Moreover, in the wearing article 100A described above, the electrode group is formed on the skin facing surface 20u of the separate sheet 20, but may be formed on the non-skin facing surface of the separate sheet 20.

  Further, in the above-described wearing article 100A, the upper insulating layer 26 is formed by applying insulating ink on the skin facing surface of each conductor 22 by printing so as to cover each conductor 22. 26 may be omitted. Further, the range where the insulating ink is applied by printing may be expanded so as to cover the electrode 21 as well. Further, the upper insulating layer 26 is not necessarily formed by applying an insulating ink, and may cover the conductive wires 22 or the electrodes 21 by attaching an insulating sheet or the like. The insulation layer may be formed so as to cover only the electrode 21 with a so-called covered electric wire wrapped around.

  Moreover, although the wearing article 100A described above includes the urine collecting pad 10, the separate sheet 20, and the disposable diaper 30, other absorbent articles such as a sanitary napkin instead of the urine collecting pad 10 and the disposable diaper 30 are provided. It may be. Therefore, the wearing article of the present invention can detect the spread of body fluids other than urine, such as menstrual blood.

  The wearing article of the present invention may be an wearing article for adults or infants.

  EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited to such examples.

[Example 1]
A sheet having the electrode group shown in FIG. 2 formed on the surface was prepared. Specifically, first, a rectangular cloth (100% polyester, thickness 0.24 mm, basis weight 140 g / m ² ) long in the Y direction was prepared. The thickness was measured using a digital length measuring device (MODEL: E-ST-100G) manufactured by Tokyo Seimitsu Co., Ltd. The length of the cloth in the Y direction was 531 to 532 mm, and the length in the X direction was 88 to 90 mm. Next, ink having carbon powder as a main component was applied on one surface of the cloth by printing to form an electrode and a conductive coating portion shown in FIG. In addition, the electrode and the conductive coating portion were formed by overlapping and printing three times.
Next, as the conductive yarn, using the trade name “Super α Fiber” manufactured by Kenei Co., Ltd., within the range of each formed conductive coating portion, as shown in FIG. A conductive wire was formed by sewing, and an electrode group was formed on one surface of the cloth. As shown in FIG. 2, the thus formed sheet was placed between a disposable diaper and a urine collection pad to produce the wearing article of Example 1. The electrode group thus formed will be described in detail. The area of each electrode is 551.2 mm ² , the distance d between the electrodes in the longitudinal direction (Y direction) is 14.4 mm, and the longitudinal direction (Y direction) ) Was 26.1 mm, the total length L of the electrode array was 437.9 mm, and the distance W ′ between the conductive yarns adjacent in the width direction (X direction) was 14.1 mm. Moreover, the resistance value (R1) of the conducting wire constituting each electrode group is 0.8 Ω / cm, the resistance value (R2) of the electrode constituting each electrode group is 47.5 Ω / cm, and the resistance value of the conducting wire. The relationship between (R1) and the resistance value (R2) of the electrode was R1 = 0.177 × R2.

[Example 2]
A sheet having the electrode group shown in FIG. 7 formed on the surface was prepared. Specifically, the same rectangular cloth as in Example 1 and ink mainly composed of carbon powder were prepared, and the electrode shown in FIG. 7 was formed. In addition, the electrode was formed by overlapping and printing three times. Next, an electrode was placed at the position of FIG. 7 on a polyester / cotton blended fabric (65% polyester, 35% cotton, thickness 0.17 mm, basis weight 115 g / m ² ). The thickness was measured using a digital measuring instrument (MODEL: DH-120) manufactured by Tokyo Seimitsu Co., Ltd. Next, the same conductive yarn as in Example 1 was prepared, and as shown in FIG. 7, the conductive yarn was sewn on the polyester / cotton blended cloth to form a conductor, and the electrode group was placed on one side of the cloth. Formed. In the same manner as in Example 1, the sheet thus formed was placed between a disposable diaper and a urine collection pad to produce a wearing article of Example 2. The electrode group thus formed will be described in detail. The area of each electrode is 894.8 mm ² , the distance d between the electrodes in the longitudinal direction (Y direction) is 4.9 mm, and the longitudinal direction (Y direction) ) Was 20.8 mm, the total length L of the electrode array was 436.8 mm, and the distance W ′ between the conductive yarns adjacent in the width direction (X direction) was 14.1 mm. Moreover, the resistance value (R1) of the conducting wire constituting each electrode group is 0.8 Ω / cm, the resistance value (R2) of the electrode constituting each electrode group is 47.5 Ω / cm, and the resistance value of the conducting wire. The relationship between (R1) and the resistance value (R2) of the electrode was R1 = 0.177 × R2.
In addition, the sheet on which the electrode group shown in FIG. 7 is formed has the same rectangular cloth as in the first embodiment, and the electrode is formed by applying ink mainly composed of carbon powder on the same cloth as in the first embodiment. The conductive thread can be prepared and, as shown in FIG. 7, the conductive thread can be sewn to the cloth on which the electrode is formed.

Example 3
A sheet having the electrode group shown in FIG. 8 formed on the surface was produced. Specifically, the same rectangular cloth as in Example 1 and an ink mainly composed of carbon powder were prepared, and the electrode shown in FIG. 8 was formed. In addition, the electrode was formed by overlapping and printing three times. Next, an electrode was disposed at the position shown in FIG. 8 on a polyester / cotton blended fabric (65% polyester, 35% cotton, thickness 0.17 mm, basis weight 115 g / m ² ). The thickness was measured using a digital measuring instrument (MODEL: DH-120) manufactured by Tokyo Seimitsu Co., Ltd. Next, the same conductive yarn as in Example 1 was prepared, and as shown in FIG. 8, the conductive yarn was sewn on the polyester / cotton blended cloth to form a conductor, and the electrode group was placed on one side of the cloth. Formed. In the same manner as in Example 1, the sheet thus formed was placed between a disposable diaper and a urine collection pad to produce a wearing article of Example 3. The electrode group formed in this way will be described in detail. The area of each electrode is 433.5 mm ² , the distance d between the electrodes in the longitudinal direction (Y direction) is 21.5 mm, and the longitudinal direction (Y direction) ) The electrode spacing d) was 29.0 mm, the total length L of the electrode array was 416.5 mm, and the spacing W ′ between adjacent conductive yarns in the width direction (X direction) was 13.9 mm. . Moreover, the resistance value (R1) of the conducting wire constituting each electrode group is 0.8 Ω / cm, the resistance value (R2) of the electrode constituting each electrode group is 47.5 Ω / cm, and the resistance value of the conducting wire. The relationship between (R1) and the resistance value (R2) of the electrode was R1 = 0.177 × R2.
In addition, the sheet on which the electrode group shown in FIG. 8 is formed has the same electrode as that of Example 1 by applying ink having carbon powder as a main component to the same rectangular cloth as in Example 1 by printing. It is also possible to prepare the conductive thread and sew the conductive thread on the cloth on which the electrodes are formed as shown in FIG.

Example 4
A sheet having the electrode group shown in FIG. 9 formed on its surface was produced. Specifically, the same rectangular cloth as in Example 1 and ink mainly composed of carbon powder were prepared, and the electrode shown in FIG. 9 was formed. In addition, the electrode was formed by overlapping and printing three times. Next, an electrode was placed at the position shown in FIG. 9 on a polyester / cotton blended fabric (65% polyester, 35% cotton, thickness 0.17 mm, basis weight 115 g / m ² ). The thickness was measured using a digital measuring instrument (MODEL: DH-120) manufactured by Tokyo Seimitsu Co., Ltd. Next, the same conductive yarn as in Example 1 was prepared, and as shown in FIG. 9, the conductive yarn was sewn on the polyester / cotton blended cloth to form a conductor, and the electrode group was placed on one side of the cloth. Formed. The wearing article of Example 4 was produced by arranging the sheet thus formed between the disposable diaper and the urine collecting pad in the same manner as in Example 1. The electrode group thus formed will be described in detail. The area of each electrode is 765.8 mm ² , the distance d between the electrodes in the longitudinal direction (Y direction) is 4.6 mm, and the longitudinal direction (Y direction) ) Was 23.7 mm, the total length L of the electrode array was 435.0 mm, and the distance W ′ between the conductive yarns adjacent in the width direction (X direction) was 14.0 mm. Moreover, the resistance value (R1) of the conducting wire constituting each electrode group is 0.8 Ω / cm, the resistance value (R2) of the electrode constituting each electrode group is 47.5 Ω / cm, and the resistance value of the conducting wire. The relationship between (R1) and the resistance value (R2) of the electrode was R1 = 0.177 × R2.
In addition, the sheet on which the electrode group shown in FIG. 9 is formed is coated with an ink mainly composed of carbon powder on the same rectangular cloth as in Example 1 to form an electrode, and is the same as in Example 1. The conductive thread can be prepared, and as shown in FIG. 9, the conductive thread can be sewn to the cloth on which the electrode is formed.

[Comparative Example 1]
Compared with the electrode group formed in the sheet | seat with which the wearing article of Example 1 is equipped, the sheet | seat which formed the electrode group which does not use an electroconductive thread | yarn on the surface was produced. Specifically, the same rectangular cloth as in Example 1 and an ink mainly composed of carbon powder were prepared, and the electrode and the conductive coating portion shown in FIG. 2 were formed. The electrode and the conductive coating portion were formed by one printing. A conductive yarn was not used, and an electrode group having a conductive wire consisting only of a conductive coating portion was formed on one surface of the cloth. In the same manner as in Example 1, the sheet thus formed was placed between a disposable diaper and a urine collecting pad to produce a wearing article of Comparative Example 1. The electrode group thus formed will be described in detail. The area of each electrode, the separation distance d, the electrode interval d ′, the total length L of the electrode rows, and the interval W between the conductive yarns are formed on the sheet of Example 1. The same as the electrode group formed. Moreover, the resistance value (R1) of the conducting wire constituting each electrode group is 175 Ω / cm, the resistance value (R2) of the electrode constituting each electrode group is also 175 Ω / cm, and the resistance value (R1) of the conducting wire. And the resistance value (R2) of the electrode was R1 = 1.0 × R2.

[Comparative Example 2]
Compared with the electrode group formed in the sheet | seat with which the wearing article of Example 1 is equipped, the sheet | seat which formed the electrode group which does not use an electroconductive thread | yarn on the surface was produced. Specifically, the same rectangular cloth as in Example 1 and an ink mainly composed of carbon powder were prepared, and the electrode and the conductive coating portion shown in FIG. 2 were formed. The electrode and the conductive coating part were formed by printing three times. A conductive yarn was not used, and an electrode group having a conductive wire consisting only of a conductive coating portion was formed on one surface of the cloth. The sheet thus formed was disposed between a disposable diaper and a urine collection pad in the same manner as in Example 1 to produce a wearing article of Comparative Example 2. The electrode group thus formed will be described in detail. The area of each electrode, the separation distance d, the electrode interval d ′, the total length L of the electrode rows, and the interval W between the conductive yarns are formed on the sheet of Example 1. The same as the electrode group formed. In addition, the resistance value (R1) of the conducting wire constituting each electrode group is 47.5Ω / cm, and the resistance value (R2) of the electrode constituting each electrode group is also 47.5Ω / cm, which is the resistance of the conducting wire. The relationship between the value (R1) and the resistance value (R2) of the electrode was R1 = 1.0 × R2.

[Comparative Example 3]
Compared with the electrode group formed in the sheet | seat with which the wearing article of Example 1 is equipped, the sheet | seat which formed the electrode group which does not use an electroconductive thread | yarn on the surface was produced. Specifically, the same rectangular cloth as in Example 1 and an ink mainly composed of carbon powder were prepared, and the electrode and the conductive coating portion shown in FIG. 2 were formed. The electrode and the conductive coating part were formed by printing five times. A conductive yarn was not used, and an electrode group having a conductive wire consisting only of a conductive coating portion was formed on one surface of the cloth. The sheet thus formed was disposed between a disposable diaper and a urine collection pad in the same manner as in Example 1 to produce a wearing article of Comparative Example 3. The electrode group thus formed will be described in detail. The area of each electrode, the separation distance d, the electrode interval d ′, the total length L of the electrode rows, and the interval W between the conductive yarns are formed on the sheet of Example 1. The same as the electrode group formed. Moreover, the resistance value (R1) of the conducting wire constituting each electrode group is 18Ω / cm, the resistance value (R2) of the electrode constituting each electrode group is also the same 18Ω / cm, and the resistance value (R1) of the conducting wire. And the resistance value (R2) of the electrode was R1 = 1.0 × R2.

[Performance evaluation]
The wearing articles of Examples 1 to 4 and Comparative Examples 1 to 3 were put on dolls, respectively, and the discharge port of the tube was arranged in a region corresponding to a human urination part. Next, a physiological saline is injected into the region corresponding to the urination portion by a certain amount through the tube, the capacitance sensor output change amount at that time is measured, and the amount of injected physiological saline, The relationship with the capacitance sensor output change was evaluated. The evaluation environment was a room temperature of 24 to 27 ° C. and a humidity of 31 to 64% RH. The results are shown in FIG.

  As shown in FIG. 10, from the results of the wearing articles of Comparative Examples 1 to 3, when forming the electrode and the conductive coating portion, the capacitance sensor output increases as the number of printings of the ink mainly composed of carbon powder increases. It can be seen that the amount of change is high. However, it can be seen that in any of the wearing articles of Comparative Examples 1 to 3, the capacitance sensor output change amount is saturated at a stage where the amount of physiological saline to be injected is small. On the other hand, as for the wearing articles of Examples 1-4, it turns out that an electrostatic capacitance sensor output variation | change_quantity becomes high with the quantity of the physiological saline to inject | pour. Therefore, from the results shown in FIG. 10, it can be expected that the worn articles of Examples 1 to 4 can measure the spread of body fluid with higher accuracy than the worn articles of Comparative Examples 1 to 3.

100A, 100B, 100C, 100D 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 62 Elastic member 20 Separate sheet ET Electrode group 21 Electrode 22 Conductive wire 221 Conductive coating portion 222 Conductive thread 23, 24 Terminal 25 Lower insulating layer 26 Upper insulating layer 27 Data collection means 28 Information processing means 281 Data acquisition means 282 Body fluid discharge amount calculation means 283 Body fluid discharge time calculation means 284 Body fluid discharge Speed calculation means 30 Disposable diaper 32 Diaper top sheet 33 Diaper back sheet 34 Diaper absorbent body 36 Fastening tape A Ventral region, B Dorsal region, C Inseam region

Claims (11)

A wearing article that detects the spread of bodily fluids based on impedance changes between a plurality of electrode groups,
The electrode group is formed on the surface of one of a plurality of sheets constituting the wearing article, and maintains an insulated state when body fluid spreads and is connected to each other via a conductor. Consisting of at least two electrodes,
The conducting wire is a worn article having a resistance value lower than that of the electrode. The relationship between the resistance value (R1) of the conducting wire and the resistance value (R2) of the electrode is:
The wearing article according to claim 1, wherein R1 = 0.001 to 0.95 × R2.   The wearing article according to claim 1 or 2, wherein the resistance value (R1) of the conducting wire is 0.05Ω / cm or more and 175Ω / cm or less.   4. The wearing article according to claim 1, wherein the electrode has a resistance value (R2) of 0.05Ω / cm or more and 4370Ω / cm or less.   The wearing article according to any one of claims 1 to 4, wherein the electrode is formed by applying a conductive material to the one sheet. The conducting wire has a conductive yarn,
The worn article according to any one of claims 1 to 5, wherein the conductive wire is formed by arranging the conductive yarn on the one sheet. The conducting wire has a conductive coating portion formed by coating a conductive material on the one sheet,
The wearing article according to claim 6, wherein the conductive wire is formed by arranging the conductive yarn in the conductive coating portion.   The wearing article according to claim 6 or 7, wherein the conductive thread is sewn on the one sheet. The wearing article includes a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent main body having an absorber disposed between the two sheets.
The one sheet is another sheet arranged on the non-skin facing surface side than the back sheet,
The wearing article according to claim 1, wherein the electrode group is formed on one surface of the separate sheet. The wearing article comprises an absorbent article having the absorbent main body,
The wearing article according to claim 9, wherein the separate sheet is a separate sheet from the absorbent article disposed on the non-skin facing surface side of the absorbent article with respect to the back sheet. The absorbent article is a urine pad;
The wearing article according to claim 9 or 10, wherein the separate 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. .

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