JP2017176252A - Disposable diaper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate disposing a sensor at a proper position in a diaper and simplify repetitive use of the sensor.SOLUTION: Over the full length of an absorber 13, a sensor insertion space 31 for inserting a sensor 30 for detecting an excretion is formed. Disposed through the sensor insertion space 31 is a pull-in member 32 which pulls the sensor 30 into the sensor insertion space 31 when one end of the member is pulled while the sensor 30 is fixed to a sensor fixation part 33 provided at the other end.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a disposable diaper in which a sensor for detecting excretion can be installed at an appropriate position.

  Conventionally, a system has been developed in which a sensor for detecting moisture due to urination is arranged in a diaper so as to notify a guardian or a caregiver of excretion. In this system, when a sensor detects moisture, moisture, or the like generated during excretion, the transmitter is activated and the receiver receives the information and informs that excretion has occurred by means such as an alarm. As a result, it is possible to confirm the presence or absence of excretion without directly touching the diaper, to reduce the burden on parents and caregivers, and to replace hygienic and dirty diapers quickly. It also helps to reduce pleasure and skin problems such as rash.

  As a disposable diaper provided with the sensor which detects such excretion, the following patent documents 1 and 2 etc. can be mentioned, for example. Patent Document 1 below discloses a diaper in which a sensor attachment part capable of attaching a sensor for detecting moisture is provided inside the absorption part in a diaper having an absorption part that absorbs moisture. Patent Document 2 below discloses an absorbent article that uses a planar sensor fixed to the non-skin contact surface side of the back sheet.

JP-A-11-33055 Japanese Patent Laying-Open No. 2015-27391

  However, in the diaper described in Patent Document 1, in order to place the sensor on the diaper (spare pad main body), the sensor must be attached by inserting it into the space of the spare pad main body from the notch provided in the topsheet. Therefore, when the sensor is formed into a sheet shape that can be flexibly deformed with the body's roundness and movement, when inserting it from the notch provided in the top sheet into the space of the spare pad body, it may be bent in the middle, It was very difficult to place the sensor on the diaper because the tip of the sensor was caught on the fiber of the sheet. In addition, after inserting the sheet-like sensor into the space of the spare pad body, the sensor and the space are considered to be formed in a size that is almost the same so that the sensor does not shift in this space. The sensor cannot be placed in an appropriate position due to the difference in urination position depending on the gender of the user, or the diffusion range of urine depending on the user's main posture (e.g., supine, standing, sitting). There was a problem that it could not be placed in a fixed position where the portion was formed.

  Further, in the absorbent article described in Patent Document 2, as a means for attaching the sensor to the back sheet of the urine pad (sensor fixing means), a fixing means that can be peeled off such as an adhesive such as hot melt, a double-sided tape, and a hook-and-loop fastener Therefore, the attachment and detachment of the sensor is troublesome, and the adhesive strength of the adhesive and the double-sided tape is reduced by repeated use, and there is a possibility that it cannot be fixed well.

  SUMMARY OF THE INVENTION Accordingly, a main object of the present invention is to provide a disposable diaper that makes it possible to easily place a sensor at an appropriate position of a diaper and that makes repeated use of the sensor simple.

In order to solve the above problems, as the present invention according to claim 1, in a disposable diaper in which an absorbent body is interposed between a liquid-permeable top sheet and a back sheet,
A sensor insertion space for inserting a sensor for detecting excretion is formed over the entire length of the absorber, and a sensor fixing portion provided at one end through the sensor insertion space A disposable diaper is provided, wherein a pull-in member is provided for pulling the sensor into the sensor insertion space by pulling the other end while the sensor is fixed.

  In the first aspect of the present invention, a sensor insertion space is formed over the entire length of the absorber, and a pull-in member for pulling in a sensor that detects excretion through the sensor insertion space is provided. It is arranged. Therefore, by pulling the other end of the retracting member while the tip of the sensor is fixed to the sensor fixing portion provided at one end of the retracting member, the sensor is brought into an appropriate position in the sensor insertion space. It becomes possible to arrange easily. In addition, since the sensor only fixes the distal end portion to the fixing portion of the retracting member, after use, the sensor can be easily and repeatedly used by simply pulling out the sensor from the sensor insertion space and removing it from the fixing portion. .

  As the present invention according to claim 2, the disposable diaper according to claim 1, wherein the sensor insertion space portion comprises a concave portion in which the widthwise central portion of the absorber is recessed from the non-skin side toward the skin side. Is done.

  In the invention according to the second aspect, the sensor insertion space portion is formed by a concave portion in which the central portion in the width direction of the absorbent body is recessed from the non-skin side toward the skin side. As well as being easy to remove, the feeling of discomfort when worn by the sensor can be reduced.

  According to a third aspect of the present invention, the sensor fixing portion is constituted by a pressure-sensitive adhesive layer in which the tip end portion of the sensor is detachable or a notch in which the tip end portion of the sensor can be engaged. Item 10. A disposable diaper according to any one of Items 1 and 2 is provided.

  In the third aspect of the invention, the sensor is fixed to the sensor fixing part by a detachable pressure-sensitive adhesive layer, or by a notch that can be engaged with the sensor tip. ing. As a result, the sensor can be easily attached to and detached from the sensor fixing portion, and the sensor can be easily used repeatedly.

  As a fourth aspect of the present invention according to any one of the first to third aspects, there is provided one or a plurality of cut lines that are capable of cutting the pull-in member in accordance with the pull-in length of the sensor. The disposable diaper described in 1. is provided.

  In the invention described in claim 4 above, when the sensor fixed to the sensor fixing portion is pulled into the sensor insertion space, it serves as a mark to which position the sensor has been pulled and the protrusion member protrudes from the diaper. In order to cut out the cut portion, one or a plurality of cut lines that can cut off the pull-in member according to the pull-in length of the sensor are formed apart from each other in the longitudinal direction of the member.

  As the present invention according to claim 5, an adhesive layer covered with a peelable release material is provided only on the sensor fixing portion on one end side and the end portion on the other end side of the drawing member. The disposable diaper in any one of 1-4 is provided.

  In the invention according to claim 5, an adhesive layer covered with a detachable release material is provided only on the sensor fixing portion on one end side and the end portion on the other end side of the retracting member, and in the middle thereof. Does not provide the pressure-sensitive adhesive layer. For this reason, the pressure-sensitive adhesive layer on one end side can be used as a sensor fixing portion for fixing the tip of the sensor, and the pressure-sensitive adhesive layer on the other end side can be used as a retracting member after the sensor is installed in the sensor insertion space. Can be used as a fixing part for fixing the diaper to the diaper.

  According to a sixth aspect of the present invention, an adhesive layer covered with a peelable release material is provided over the entire length of the pull-in member, and corresponds to the sensor fixing portion on one end side of the release material. A cut line that can cut off the part of the release material is formed, and one or more cut lines that can cut off the release material according to the pull-in length of the sensor are formed on the other end side of the release material. A disposable diaper according to any one of claims 1 to 4, wherein a plurality of the disposable diapers are formed apart from each other.

  In the invention of claim 6, a pressure-sensitive adhesive layer covered with a peelable release material is provided over the entire length of the pull-in member, and corresponds to the sensor fixing portion on one end side of the release material. A cut line that can cut off the part of the release material that is to be cut off is formed, and one cut line that can cut off the release material according to the pull-in length of the sensor is separated from the other end of the release material in the longitudinal direction of the member A plurality are formed. For this reason, the release material is peeled off to an appropriate position according to the retracted length of the sensor to expose the adhesive layer, and the retractable member can be fixed to the diaper with the adhesive layer.

  The present invention according to claim 7 is the invention according to any one of claims 1 to 6, wherein the pull-in member is provided with one mark or a plurality of marks which can identify the pull-in length of the sensor separated in the longitudinal direction of the member. A disposable diaper is provided.

  In the invention of claim 7, the sensor is pulled into the sensor insertion space by pulling the other end of the pull-in member by attaching a mark to the pull-in member so that the pull-in length of the sensor can be identified. Sometimes you can see at a glance where the tip of the sensor is located.

  As the present invention according to claim 8, a plurality of main body designs identifiable from the backsheet side are provided apart from each other in the longitudinal direction of the diaper, and the retracting member is retracted when the sensor is retracted into the sensor insertion space. 8. A plurality of retractable member designs, each of which has a design corresponding to the design for the main body where the tip of the sensor is located, are provided at positions projecting from the diaper, spaced apart in the longitudinal direction of the member. The disposable diaper described in 1. is provided.

  In the invention of claim 8 above, the diaper body is provided with a body design that can be identified from the back sheet side, and the retracting member protrudes from the diaper when the sensor is pulled into the sensor insertion space. A retractable member design comprising a design corresponding to the design for the main body where the tip of the sensor is located is provided. For this reason, when a predetermined design appears in a portion where the retracting member protrudes from the diaper, it can be seen at a glance that the sensor is located in the portion to which the corresponding body design is attached.

  As described above in detail, according to the present invention, the sensor can be easily disposed at an appropriate position of the diaper, and the repeated use of the sensor can be easily performed.

It is a product state appearance figure of disposable diaper 1 concerning the present invention. It is an assembly drawing in the unfolded state. FIG. 3 is a development view of the exterior sheet 20. 2 is a plan view of the absorbent main body 10. FIG. FIG. 5 is a view taken along line VV in FIG. 4. It is the VI-VI line arrow directional view of FIG. It is an expanded view of the disposable diaper 1 which shows the installation point (the 1) of the sensor 30. FIG. It is an expanded view of the disposable diaper 1 which shows the installation point (the 2) of the sensor 30. FIG. It is a top view of the drawing member 32 concerning a modification. The drawing member 32 which concerns on a modification is shown, (A) is a top view, (B) is a side view. (A), (B) is an assembly drawing of the drawing member 32 which concerns on a modification. It is an expanded view of the outer surface side of the disposable diaper 1 which concerns on a modification. It is sectional drawing of the absorptive main body 10 which concerns on another form example. It is an expanded view of disposable diaper 1A which concerns on the other form example. (A), (B) is a perspective view which shows the fixation point when the sensor fixing | fixed part 33 is comprised by cutting.

[Basic composition of absorbent article]
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In this document, “longitudinal direction” means a direction connecting the front side and the rear side of the disposable diaper 1, and “width direction” means a direction orthogonal to the longitudinal direction (left and right direction when the disposable diaper 1 is unfolded). .

  As shown in FIGS. 1 to 5, the present disposable diaper 1 (hereinafter also simply referred to as a diaper) is provided between a liquid-permeable top sheet 11 made of a nonwoven fabric and a waterproof sheet 12 made of polyethylene or the like. An absorbent main body 10 having a pair of left and right three-dimensional gathers BS, BS standing on the skin side along the diaper longitudinal direction on both sides of the skin surface, with an absorbent body 13 such as cotton pulp interposed therebetween, The body 10 is integrally provided on the outer surface side (non-skin side) of the absorbent main body 10 and includes an exterior sheet 20 that constitutes a diaper back sheet. In the product state, the front body and the back body of the exterior sheet 20 are on both sides. It is the underpants type diaper of the structure where the waist opening part and the left-right paired leg opening part were formed by joining in a part.

  Hereinafter, each constituent member will be described in detail.

(Exterior sheet 20)
First, an example of the structure of the exterior sheet 20 will be described in detail with reference to FIG.
The exterior sheet 20 is a nonwoven fabric sheet having a two-layer structure composed of an upper layer nonwoven fabric 20A and a lower layer nonwoven fabric 20B. Yes. The planar shape forms a pseudo hourglass shape as a whole by the concave leg circumference cut lines 29 for forming leg openings on both sides of the middle.

  In the exterior sheet 20 according to the present invention, as the elastic member, in the developed shape shown in FIG. 3, the waist elastic members 24, 24... Arranged around the waist opening 23, and the front body and the back body , And a plurality of waistline elastic member groups 25, 25... Arranged along the horizontal direction at intervals in the vertical direction. A so-called leg-hole elastic member that is substantially continuous along the leg-cut line 29 may be provided.

  The waist elastic members 24, 24... Are arranged in the vicinity of the waist opening edge within the range of the side part joining edges 21 and 22 where the front body and the back body are joined. It is a thread rubber-like elastic member, and is used to attach a diaper to the body by applying an expansion / contraction force so as to tighten around the waist of the body. For the waist elastic member 24, rubber thread is used in the illustrated example. However, for example, a tape-like elastic member may be used.

  The waist elastic members 25, 25... Are thread rubbers arranged in the horizontal direction at intervals in the vertical direction over the range from the upper part to the lower part of the side joint edges 21, 22. This is an elastic member, which applies a horizontal expansion / contraction force to the waist portions of the front body and the back body so that the diaper is in close contact with the body. The boundary between the waist elastic members 24, 24 ... and the waist elastic members 25, 25 ... is not necessarily clear. For example, even if the number of elastic members arranged in the horizontal direction with an interval in the vertical direction between the front body and the back body cannot be specified, some on the upper side function as waist elastic members, and the rest The elastic member may function as a waist elastic member.

(Absorbent body 10)
As shown in FIGS. 4 and 5, the absorbent main body 10 includes an absorbent body 13 such as cotton-like pulp between a liquid-permeable top sheet 11 made of a nonwoven fabric and a waterproof sheet 12 made of polyethylene or the like. It has an intervening structure and absorbs and retains body fluids.

  In the illustrated example, the absorbent body 13 is formed with a substantially square shape in plan view, and the width dimension thereof is a dimension width that does not give the wearer a feeling of gore by hitting the crotch portion. The absorbent body 13 is surrounded by an encapsulating sheet 14 made of crepe paper or non-woven fabric in order to maintain the shape and improve the diffusibility of the body fluid that has passed through the liquid-permeable top sheet 11. As the absorber 13, it is desirable to use an airlaid absorber that can reduce the bulk.

  As the liquid-permeable top sheet 11 covering the surface side (skin contact surface side) of the absorbent body 13, a porous or non-porous nonwoven fabric or a porous plastic sheet is preferably used. The material fibers that make up the nonwoven fabric can be synthetic fibers such as olefins such as polyethylene or polypropylene, polyesters, and polyamides, recycled fibers such as rayon and cupra, and natural fibers such as cotton. A nonwoven fabric obtained by an appropriate processing method such as a spun bond method, a thermal bond method, a melt blown method, or a needle punch method can be used. Among these processing methods, the spunlace method is excellent in terms of flexibility and drapeability, and the thermal bond method is excellent in terms of being bulky and soft. When a large number of through holes are formed in the liquid permeable top sheet 11, urine and the like are quickly absorbed, and the dry touch property is excellent. The liquid-permeable top sheet 11 extends to the back side of the absorbent body 13 around the side edge of the absorbent body 13.

  As the waterproof sheet 12 that covers the back surface side (non-skin contact surface side) of the absorbent body 13, a liquid-impervious plastic sheet such as polyethylene or polypropylene is used, but in recent years, it has moisture permeability from the viewpoint of preventing stuffiness. Are preferably used. This water-impervious / breathable sheet is a microporous sheet obtained by, for example, melt-kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene to form a sheet, and then stretching in a uniaxial or biaxial direction. If the sheet thickness is the same, the rigidity is lower than that of the non-porous sheet, which is superior in terms of flexibility.

  A pair of left and right three-dimensional gathers BS standing on the skin side along the longitudinal direction of the diaper is formed on both sides of the absorbent main body 10 on the skin surface side. As shown in FIG. 5 and FIG. 6, the gathered nonwoven fabric 15 forming the three-dimensional gathered BS is a nonwoven fabric made into a double sheet by folding, and the absorbent body 13 wound by the liquid-permeable topsheet 11 is used. The side edge portion is further rolled up from the upper side and extends to the back side of the absorbent body 13 to be bonded. More specifically, the gathered nonwoven fabric 15 has a three-dimensional gather BS forming portion at the middle part in the longitudinal direction of the diaper, and a range extending from the middle part in the width direction to the back side of the absorbent body 13 as shown in FIG. Is bonded by a hot-melt adhesive or the like, and at the front and rear end portions in the longitudinal direction, as shown in FIG. 6, the section from the intermediate portion in the width direction to the one side edge extends to the back side of the absorber 13. In addition to being bonded, the portion forming the three-dimensional gather BS is bonded by a hot melt adhesive or the like while being folded at the upper surface portion of the absorber 13.

  Inside the gathered nonwoven fabric 15 formed of the double sheet nonwoven fabric, one or a plurality of yarns are formed along the longitudinal direction of the diaper at the standing tip side portion, and in the illustrated example, a plurality of yarns are spaced apart in the gather standing direction. Elastic elastic members 16, 16... Are arranged. The thread-like elastic elastic members 16, 16,... Are for forming a three-dimensional gather BS by raising the gathered nonwoven fabric 15 to the skin side by elastic elastic force as shown in FIG.

  The waterproof sheet 12 enters both sides of the double sheet-like gathered nonwoven fabric 15 and constitutes a leak-proof wall on the lower side (standing base end side) of the three-dimensional gather BS as shown in FIG. It is supposed to be. In order to improve the contact of the three-dimensional gather BS with the waterproof sheet 12, the three-dimensional gather BS is left on the folded end side of the gather non-woven fabric 15 except for a portion of the double sheet-shaped gather non-woven fabric 15, 15 having a slight width. It extends to the vicinity of the tip. As such a waterproof sheet 12, it is desirable to use an opaque sheet so as not to cause browning such as defecation and urine. As the opacification, a plastic film and a pigment and filler such as calcium carbonate, titanium oxide, zinc oxide, white carbon, clay, talc and barium sulfate are preferably used.

  As the thread-like elastic stretchable member 16, materials such as styrene rubber, olefin rubber, urethane rubber, ester rubber, polyurethane, polyethylene, polystyrene, styrene butadiene, silicon, polyester, and the like that are usually used can be used. In order to make it difficult to see from the outside, the thickness is 310 to 940 dtex and the tension is 250 to 290% (2.5 to 2.9 times) when the natural length is 100%. Is good. Instead of the thread-like elastic elastic member, a tape-like elastic elastic member having a certain width may be used.

  In the same manner as the liquid permeable top sheet 11, the material fiber constituting the gathered nonwoven fabric 15 is not limited to synthetic fibers such as polyethylene or polypropylene, such as olefin, polyester or amide, but also regenerated fibers such as rayon or cupra, Non-woven fabric obtained by an appropriate processing method such as a spunbond method, a thermal bond method, a melt blown method, a needle punch method, etc. can be used. It is preferable to use a non-woven fabric with a low basis weight and excellent air permeability. Further, with respect to the gathered nonwoven fabric 15, in order to prevent the transmission of urine and the like, to prevent fogging and to improve the feel to the skin (dry feeling), a silicon-based, paraffin-metal-based, alkylchromic chromoid-based water repellent It is desirable to use a water-repellent non-woven fabric coated with such as.

(About sensor pull-in structure)
In the present disposable diaper 1, as shown in FIG. 4, a sensor insertion space 31 for inserting a sensor 30 (see FIG. 7) for detecting excretion is formed over the entire length of the absorber 13. At the same time, the sensor 30 is pulled into the sensor insertion space 31 by pulling the other end through the sensor insertion space 31 and the sensor 30 fixed to the sensor fixing portion 33 provided at one end. A retracting member 32 for retracting is provided.

  Accordingly, by pulling the other end of the retracting member 32 in a state where the distal end portion of the sensor 30 is fixed to the sensor fixing portion 33 provided at one end of the retracting member 32, the sensor 30 is inserted into the sensor insertion space portion. 31 can be arranged at appropriate positions. Further, since the sensor 30 only fixes the distal end portion to the sensor fixing portion 33 of the retracting member 32, after use, the sensor 30 is pulled out from the sensor insertion space portion 31 and then removed from the sensor fixing portion 33. Just be able to use it easily and repeatedly.

  The sensor 30 can detect excretion such as urination or defecation, such as a sensor that detects a change in resistance value or capacitance between two or more electrodes, a sensor that detects humidity, or a sensor that detects odor. Any known sensor can be widely used. As the shape of the sensor 30, a sensor body having a detection function provided at the distal end portion and a signal detected by the sensor body that is connected to the sensor body and extends to the outside of the diaper when inserted are transmitted to the outside. Examples include transmission means. As for the size of the sensor main body, the length corresponding to the diaper longitudinal direction is 20 to 40 mm, the width corresponding to the diaper width direction is 5 to 15 mm, and the thickness corresponding to the diaper thickness direction is about 2 to 8 mm. The thing is common, and if an example is given, a thing of length 30mm x width 10mm x thickness 5mm can be used.

  As shown in FIGS. 5 and 6, the sensor insertion space portion 31 is preferably formed of a concave portion in which the central portion in the width direction of the absorber 13 is recessed from the non-skin side toward the skin side. This facilitates detection of excretion by the sensor 30 inserted in the sensor insertion space 31 and at least the encapsulating sheet 14 is interposed between the sensor 30 and the liquid-permeable top sheet 11. The uncomfortable feeling at the time of wearing by 30 can be reduced.

  The structure of the sensor insertion space 31 in the illustrated example will be described in more detail. The sensor insertion space 31 penetrates the front and back of the absorber 13 formed over the entire length in the center in the width direction of the absorber 13. A portion in which the encapsulating sheet 14 encapsulating the non-skin side of the absorbent body 13 along the encapsulating sheet 14 covering both side surfaces of the slit 17 and the skin side of the slit 17 is disposed in a U-shaped cross section; It is comprised by the space part enclosed with the waterproof sheet 12 arrange | positioned by the non-skin side of the to-be-wrapped sheet | seat 14. FIG. The waterproof sheet 12 is joined to the non-skin side of the encapsulating sheet 14 along the longitudinal direction on both sides of the sensor insertion space 31 by a joining means such as a hot melt adhesive or heat seal. In addition, a laminated portion of the encapsulating sheet 14 covering the skin side of the absorber 13 and the encapsulating sheet 14 covering the non-skin side in the slit 17 is joined by a joining means such as a hot melt adhesive or heat seal.

  It is preferable that the sensor insertion space 31 is formed in a linear shape over the entire length in the longitudinal direction at the center in the width direction of the absorber 13. That is, the sensor insertion space 31 is formed straight through the front edge and the rear edge of the absorber 13 in the longitudinal direction. Thus, when the retracting member 32 is disposed in the sensor insertion space 31, both ends of the retracting member 32 can be protruded from the front edge and the rear edge of the absorber 13, respectively.

  The cross-sectional shape of the sensor insertion space 31 is a horizontally long and substantially rectangular shape, and is substantially the same throughout the entire length of the absorber 13. The size of the cross section is formed such that the sensor 30 can be inserted. Specifically, in order to facilitate the insertion of the sensor 30 and to prevent the sensor 30 from being displaced at the time of mounting, the width dimension is 8 to 8 mm. It is preferable that 20 mm and a height dimension (dimension of the absorber 13 in the thickness direction) be about 4 to 10 mm.

  Next, the pull-in member 32 will be described. The pull-in member 32 is made of a plastic film, a non-woven fabric, a woven fabric, and the like. The pull-in member 32 is highly flexible, has low elasticity, and has a certain tensile strength that does not break when the sensor 30 is pulled. It is formed by the elongate member of the equal width belt | band | zone provided with.

The width of the pull-in member 32 is preferably smaller than the width of the sensor insertion space 31 and is generally 5 to 18 mm. When the drawing member 32 is made of a nonwoven fabric, it is preferable to use a fabric weight of 10 to 60 g / m ² . On the other hand, when the drawing member 32 is made of a film, it is preferable to use a film having a thickness of 30 to 80 μm. Further, as the tensile strength of the pull-in member 32, it is desirable to use a member having 15 N / 50 mm or more.

  Before using the diaper, the retracting member 32 penetrates the sensor insertion space 31 so that both ends extend from the front end and the rear end of the sensor insertion space 31 as shown in FIG. Thus, it is formed longer than the longitudinal dimension of the absorber 13. In addition, the pull-in member 32 has the absorbent main body 10 (the liquid-permeable top sheet 11 and the liquid-permeable top sheet 11 and the like) for manufacturing reasons such as when a continuous body of the absorbent main body continuous in the longitudinal direction is cut into individual absorbent main bodies 10. It is desirable to form it approximately equal to the longitudinal dimension of the waterproof sheet 12). Furthermore, it may be formed so as to extend from the front end and the rear end of the absorbent main body 10 in consideration of fixing of the sensor 30 and ease of picking at the time of pulling in. In this case, before use of the diaper, both end portions of the retracting member 32 are exposed to the skin contact surface side of the disposable diaper 1.

  A sensor fixing portion 33 for fixing the sensor 30 is formed at one end of the pull-in member 32, in the example shown in FIG. As shown in FIG. 10, the sensor fixing part 33 may be configured by a removable adhesive layer at the tip of the sensor 30, or the tip of the sensor 30 as shown in FIG. May be constituted by an elongated notch 33a that is long in the longitudinal direction of the engageable member. For example, as shown in FIG. 15A, the fixing method in the case of the notch 33a is such that the sensor 30 is inserted into the notch 33a so that the width of the sensor 30 coincides with the longitudinal direction of the notch 33a. In the state where the transmission means 30b and the notch 33a are engaged with each other through the notch 33a, the sensor 30 is rotated about 90 ° and the stepped portion between the sensor main body 30a and the transmission means 30b is hooked on the notch 33a. The sensor 30 is fixed to the retracting member 32 as shown in FIG. Therefore, it is preferable that the thickness of the transmission means 30b of the sensor 30 (the length in the width direction of the sensor body 30a) is equal to or less than the width dimension of the cut 33a. The notch 33a is formed long from the center in the width direction at a position 5 to 10 mm away from the one end of the retracting member 32 in the longitudinal direction of the member toward the other end. The size of the cut 33a is preferably about 5 to 15 mm in length and about 2 to 8 mm in width. When the sensor fixing portion 33 is made of an adhesive layer, the adhesive layer is covered with a release material that can be removed before using the diaper.

  By pulling the other end (rear side end in the example shown in FIG. 7) of the retracting member 32 in a state where the front end portion of the sensor 30 is fixed to the sensor fixing portion 33, as shown in FIG. 30 is drawn into the sensor insertion space 31. When the length of the pull-in member 32 is formed substantially equal to the length of the absorbent main body 10, the end of the pull-in member 32 is covered with the liquid-permeable top sheet 11 and the waterproof sheet 12. The sensor 30 is fixed and the pulling member 32 is pulled by turning the non-bonded portions of the top sheet 11 and the waterproof sheet 12 or by picking out the end of the pulling member 32.

  As shown in FIG. 8, the pulling member 32 is preferably formed with a cut line 34 capable of cutting the pulling member 32 in accordance with a predetermined pulling length of the sensor 30. By cutting off the pull-in member 32 with the cut line 34, an excess portion protruding from the rear end of the absorbent main body 10 can be removed, so that it does not get in the way during use. In addition, it becomes possible to grasp where the sensor 30 drawn into the sensor insertion space 31 is located by using the cut line 34 as a mark, and the sensor 30 can be arranged at an appropriate position. It becomes.

  The cut line 34 is an easy tear portion such as a perforation line or a compression line provided over the entire width of the retracting member 32, and is particularly preferably a perforation of tie: cut = 1-5 mm: 2-5 mm. . Further, in order to clarify the role of the mark, it is preferable to perform coloring along the cut line 34.

  As shown in FIG. 8, the cut line 34 may be provided at only one location with respect to the retracting member 32, or as shown in FIG. Also good. When providing the said cut line 34 in multiple places, it is preferable to provide one place in the center part of the member longitudinal direction of the drawing-in member 32, and one place or multiple places at intervals of 2-5 cm, respectively. In the example of FIG. 9, it forms in three places. When it is formed at a plurality of locations, the sensor 30 can be arranged at a more appropriate position based on the user's gender, body shape, main posture, etc., and it becomes easier to detect excretion. preferable.

  As a modification of the pull-in member 32, as shown in FIG. 10, release members 37 and 38 that can be peeled only at the sensor fixing portion 33 on one end side and the end portion on the other end side of the pull-in member 32, respectively. You may make it provide the adhesive layers 35 and 36 covered with. Thereby, the adhesive layer 35 on the one end side can be used as a sensor fixing portion 33 that peels the release material 37 and fixes the front end portion of the sensor 30, and the adhesive layer 36 on the other end side serves as a sensor insertion space portion. After the sensor 30 is pulled into 31, the release material 38 is peeled off and can be used as a fixing portion for fixing to the diaper. In FIG. 10, the pressure-sensitive adhesive layer 36 on the other end side and the pressure-sensitive adhesive layer 35 constituting the sensor fixing portion 33 on the one end side are provided on the same surface, that is, the skin side surface of the retracting member 32. In order to make it easy to fix the end-side pressure-sensitive adhesive layer 36 to the diaper, the end-side pressure-sensitive adhesive layer 35 may be provided on the surface opposite to the one-end-side pressure-sensitive adhesive layer 35, that is, on the non-skin side surface of the retracting member 32.

  Further, as another modification of the pulling member 32, as shown in FIG. 11, an adhesive layer 39 covered with a peelable release material 40 is provided over the entire length of the pulling member 32, and this peeling is performed. A cut line 41 is formed on one end side of the material 40 so that the part of the release material 40 corresponding to the sensor fixing portion 33 can be cut off, and on the other end side of the release material 40 according to the pull-in length of the sensor 30. It is good also as what formed the cutting line 42 which can cut off the peeling material 40. FIG. The cut line 42 on the other end side may be one as shown in FIG. 11 (A) or a plurality of places as shown in FIG. 11 (B). As a result, the release material 40 is peeled off to an appropriate position according to the retracted length of the sensor 30 to expose the adhesive layer 39, and the exposed adhesive layer 39 can be fixed to the diaper.

  As the pressure-sensitive adhesive constituting the pressure-sensitive adhesive layers 35, 36, and 39, for example, a styrene polymer, a tackifier, or a plasticizer that is a main component is preferably used. Examples of the styrenic polymer include styrene-ethylene-butylene-styrene block copolymers, styrene-butylene-styrene block copolymers, and styrene-isobutylene-styrene copolymers. It may be used or two or more polymer blends. Among these, a styrene-ethylene-butylene-styrene block copolymer is preferable in terms of good thermal stability. As the tackifier and plasticizer, those that are solid at room temperature can be preferably used. Examples of the tackifier include C5 petroleum resins, C9 petroleum resins, dicyclopentadiene petroleum resins, and rosin petroleum resins. Polyterpene resin, terpene phenol resin, etc., and examples of the plasticizer include monomer plasticizers such as trifresil phosphate, dibutyl phthalate, dioctyl phthalate, and polymer plasticizers such as vinyl polymers and polyesters. It is done.

  Moreover, as the disposable diaper 1 which concerns on another modification, as FIG. 12 shows, the design 43,43 ... for main bodies which can be identified from the exterior sheet 20 side which comprises the back sheet | seat of a diaper is spaced apart in the diaper longitudinal direction. The leading end of the sensor 30 is located at a position where the other end of the retracting member 32 protrudes from the rear end of the disposable diaper 1 when the sensor 30 is pulled into the sensor insertion space 31. A plurality of retractable member designs 44 having a design corresponding to the main body design 43 can be provided apart from each other in the longitudinal direction of the member.

  Describing in more detail based on FIG. 12, the main body design 43 is configured so that the disposable diaper 1 can be visually recognized directly from the exterior sheet 20 side or indirectly through the exterior sheet 20. Or it is printed on the member inside this. In the illustrated example, the main body design 43 is provided with three designs 43a, 43b, and 43c in order from the front side. These three designs 43a, 43b, 43c may have the same shape and color, or may be different in one or both of the shape and color. Further, the non-skin surface of the retracting member 32 is directly from the position where the retracting member 32 protrudes from the rear end of the diaper when the sensor 30 is retracted, that is, directly from the outer surface side protruding from the rear end of the exterior sheet 20. The retractable member design 44 having a shape and color corresponding to the main body design 43 where the tip of the sensor 30 is located at a visible position is the same as the interval between the main body designs 43a, 43b, 43c in the longitudinal direction of the member. Are spaced apart from each other. In the illustrated example, since the front end of the sensor 30 is located in the second body design 43b from the front side, in the retracting member 32 protruding from the rear end of the diaper, at a position near the rear side end of the exterior sheet 20, A retractable member design 44b corresponding to the main body design 43b is provided. Thereby, it is possible to know at a glance where the sensor 30 is located in the diaper.

[Other examples]
(1) In the above-described embodiment, the sensor insertion space 31 is configured by forming the slit 17 penetrating the front and back at the central portion in the width direction of the absorber 13, but as shown in FIG. A recess 18 that is recessed from the non-skin side toward the skin side is formed in the center in the width direction over the entire length of the absorber 13, and the non-skin side of the absorber 13 disposed along the recess 18 is covered You may comprise by the space part enclosed with the to-be-wrapped sheet | seat 14 and the waterproof sheet 12 of the U-shaped cross section to wrap. The concave portion 18 may be a depression formed by squeezing the flat absorbent body 13 from the non-skin side. The one formed by doing so is preferable because the skin contact at the time of wearing the diaper becomes soft.

(2) In the above-described embodiment, the pants-type disposable diaper 1 including the absorbent main body 10 and the exterior sheet 20 has been described as an example. However, as shown in FIG. 14, the absorption surrounded by the encapsulating sheet 14A A body 13A, a liquid-permeable top sheet 11A disposed so as to cover the skin side of the absorbent body 13A, and a non-skin side of the absorbent body 13A so as to cover at least the entire area of the absorbent body 13A. A waterproof sheet 12A made of polyethylene or the like disposed on the sheet, a non-woven fabric provided on the non-skin side of the waterproof sheet 12A, a back sheet 20A defining an outer shape of the diaper, and provided on both sides of the diaper back side. The tape-type disposable diaper 1 </ b> A mainly composed of the mechanically-joined fastening tape 19 can be similarly applied. In the case of this tape-type disposable diaper 1A, notches 11a and 11a for projecting both end portions of the pull-in member 32 toward the skin contact surface side on the liquid-permeable top sheet 11A at or near the front and rear ends of the absorbent body 13A. The sensor 30 is fixed and the sensor 30 is pulled in such a manner that the tip of the pull-in member 32 is extracted from the notch 11a.

(3) In the above embodiment, the sensor fixing portion 33 is formed at the front end of the retracting member 32 and the sensor 30 is pulled into the sensor insertion space 31 by pulling the rear end of the diaper. Alternatively, the sensor fixing part 33 may be formed at the rear end of the diaper of the retracting member 32, and the sensor 30 may be pulled into the sensor insertion space 31 by pulling the front end of the diaper.

  DESCRIPTION OF SYMBOLS 1 ... Disposable diaper, 10 ... Absorbent main body, 11 ... Liquid-permeable top sheet, 12 ... Waterproof sheet, 13 ... Absorber, 14 ... Encapsulated sheet, 15 ... Gathered nonwoven fabric, 16 ... Filamentary elastic elastic member, 17 ... Slit , 18 ... recess, 20 ... exterior sheet, 30 ... sensor, 31 ... sensor insertion space, 32 ... retracting member, 33 ... sensor fixing part, 34 ... tear line, 35 · 36 ... adhesive layer, 37 · 38 ... Release material, 39 ... Adhesive layer, 40 ... Release material, 41, 42 ... Cut line, 43 ... Design for main body, 44 ... Design for retractable member

Claims (8)

In a disposable diaper in which an absorbent body is interposed between a liquid-permeable top sheet and a back sheet,
A sensor insertion space for inserting a sensor for detecting excretion is formed over the entire length of the absorber, and a sensor fixing portion provided at one end through the sensor insertion space A disposable diaper, wherein a pull-in member for pulling the sensor into the sensor insertion space is provided by pulling the other end while the sensor is fixed.   2. The disposable diaper according to claim 1, wherein the sensor insertion space portion is a concave portion in which a central portion in the width direction of the absorber is recessed from the non-skin side toward the skin side.   The said sensor fixing | fixed part is comprised by the notch | incision in which the front-end | tip part of the said sensor is comprised by the removable adhesive layer, or the front-end | tip part of the said sensor can be engaged. Disposable diapers.   The disposable diaper according to any one of claims 1 to 3, wherein a plurality of cut lines that can cut the pull-in member according to a pull-in length of the sensor are formed in one or a plurality in the longitudinal direction of the member.   The disposable according to any one of claims 1 to 4, wherein an adhesive layer covered with a peelable release material is provided only on the sensor fixing portion on one end side and the end portion on the other end side of the drawing member. Diapers.   A pressure-sensitive adhesive layer covered with a releasable release material is provided over the entire length of the pull-in member, and the part of the release material corresponding to the sensor fixing portion can be cut off on one end side of the release material. A cut line is formed, and on the other end side of the release material, one or more cut lines capable of cutting the release material according to the pull-in length of the sensor are formed apart from each other in the longitudinal direction of the member. The disposable diaper in any one of Claims 1-4.   The disposable diaper according to any one of claims 1 to 6, wherein the pull-in member is provided with one mark or a plurality of marks separated from each other in a longitudinal direction of the member so that the pull-in length of the sensor can be identified.   A plurality of main body designs identifiable from the backsheet side are provided spaced apart in the diaper longitudinal direction, and the retracting member protrudes from the diaper when the sensor is pulled into the sensor insertion space. The disposable diaper according to any one of claims 1 to 7, wherein a plurality of retractable member designs each having a design corresponding to the design for the main body on which the tip portion of the sensor is located are provided apart from each other in the longitudinal direction of the member.

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