JP2011078491A - Disposable diaper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disposable diaper capable of surely and easily fixing and peeling first and second fixing elements provided to respective right and left first fixing members to/from a second fixing member by one fixing or peeling workpiece. <P>SOLUTION: On the inner side in the lateral direction X of side ends on the outer side in the lateral direction X on the skin surface side of the fastening base material 31 of respective right and left fastening members 3, first and second fixing elements 32 and 33 are provided side by side in the longitudinal direction Y at a predetermined interval in the longitudinal direction Y. On an intermediate part positioned between the first fixing element 32 and the second fixing element 33 at the side ends on the outer side in the lateral direction X of the fastening base material 31, a recessed part 34 is provided by recessing the side end partially to the inner side in the lateral direction X. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a disposable diaper to be worn in an area including a wearer's crotch.

  There exists a thing of patent document 1 as a conventional disposable diaper. In this disposable diaper, the first fastening members provided on the left and right edges of the rear part of the diaper main body are detachably fastened to the second fastening member provided on the outer surface side of the front part of the diaper main body. Is done. The left and right first fastening members are provided with two fastening elements spaced apart in the vertical direction, and the two fastening elements are detachably fastened to the second fastening member. With such a configuration, two fastening elements provided on each first fastening member can be fastened to the second fastening member at the same time when the disposable diaper is attached, and the two fastening elements can be separated separately. There is no need to fix it.

JP-A-10-155834

  However, in the conventional disposable diaper described above, it is difficult to understand the arrangement position and the like of the fastening element when the first fastening member is viewed from the outer surface side. For this reason, when the operator who removes and installs the diaper pulls the first fastening member off the second fastening member, which part of the first fastening member should be gripped with a finger to easily pull out the work May be difficult to understand and may take time for the peeling work. For example, in one pulling operation with respect to each first fastening member, the two fastening elements cannot be peeled off at the same time by the pulling-out operation, and there is a case where the work of peeling off the two fastening elements separately is required.

  Therefore, the problem to be solved by the present invention is that the first and second fastening elements provided on the first fastening members on the left and right sides are fastened and peeled off from the second fastening member once. Or it is providing the disposable diaper which can be performed reliably and easily by the peeling operation | work.

  In order to solve the above-described problem, in the invention of claim 1, the disposable diaper is mounted in a region including the wearer's crotch, has an absorbent core that absorbs liquid, and includes the wearer's crotch. A diaper body applied to the region, left and right first fastening members provided at both lateral edges of a rear portion located on the rear side of the diaper body, and a front side of the diaper body A second fastening member that is provided on the outer surface side of the front side portion to which the left and right first fastening members are detachably fastened, wherein the first fastening member is the rear side of the diaper body. Fastening base material joined to the left or right edge of the part, and in the longitudinal direction on the inner side in the lateral direction from the lateral outer side edge on the skin surface side of the fastening base material Provided side by side in the vertical direction with a predetermined interval First and second fastening elements that are detachably fastened to the second fastening member, and the first fastening element and the second at the laterally outer side end of the fastening base material. In the intermediate portion located between the fastening elements, the side end is smaller in depth than the dimension along the lateral direction from the side ends to the first fastening element and the second fastening element. And a recess provided by being partially recessed inward in the lateral direction.

  Moreover, in invention of Claim 2, in the disposable diaper which concerns on invention of Claim 1, it opposes mutually in the said vertical direction in the said 1st fastening element of each said 1st fastening member, and the said 2nd fastening element. At least in the laterally outward portion of the edge, there is provided an interval expanding portion that is inclined or curved in a direction away from the longitudinal direction toward the laterally outward side. .

  According to a third aspect of the invention, in the disposable diaper according to the first or second aspect of the invention, the first fastening member is treated so as to bend more easily than other portions of the fastening base material. , Located substantially in the longitudinal center of the concave portion provided in the fastening base material when viewed from the lateral direction, substantially along the lateral direction from the side end toward the lateral inward side. A fold portion extending further is provided.

  Moreover, in invention of Claim 4, in the disposable diaper which concerns on invention of Claim 3, the said crease | fold part is the said 1st fastening element and the said 2nd fastening element from the substantially said side end of the said fastening base material. It extends toward the inner side in the lateral direction beyond the lateral side edge in the lateral direction.

  Moreover, in invention of Claim 5, in the disposable diaper which concerns on Claim 3 or Claim 4, the said crease | fold part is formed by partially pressing the said fastening base material.

  According to a sixth aspect of the present invention, in the disposable diaper according to any one of the first to fifth aspects of the present invention, the concave portion provided in the fastening base material has a smooth curved dent shape. .

  According to a seventh aspect of the present invention, in the disposable diaper according to any one of the first to sixth aspects of the present invention, the first fastening element and the second fastening element of each of the first fastening members. The spacing between the fastening base and the second fastening member is such that the first fastening element and the second fastening element are fastened to the second fastening member. It is a dimension in which one or two fingers can be inserted into a portion between the first fastening element and the second fastening element.

  According to the first aspect of the present invention, the first and second left and right first fastening members are arranged on the inner side in the lateral direction from the lateral outer side edge on the skin surface side of the fastening base material. The second fastening elements are provided side by side in the vertical direction at a predetermined interval in the vertical direction. At the same time, in the intermediate portion located between the first fastening element and the second fastening element at the laterally outward side end of the fastening base material of each first fastening member, the side end is a part. Thus, a recess is provided by being recessed inward in the lateral direction. For this reason, the operator who attaches / detaches the diaper is in a state where each first fastening member is fastened to the second fastening member, and the first and second fastening elements are hidden on the skin surface side of the fastening base material. Even so, an intermediate portion between the first fastening element and the second fastening element in the fastening base material can be easily recognized using the concave portion of the fastening base material as a mark. Therefore, when the first fastening member is peeled off, the operator can easily recognize and grip the portion between the first fastening element and the second fastening element in the fastening base material. By grasping the portion of the first fastening member and peeling the first fastening member from the second fastening member, the force for peeling applied to the first fastening member from the operator's hand is the first. It acts on the first and second fastening elements substantially equally at the same time, and the first and second fastening elements can be peeled from the second fastening member at the same time. As a result, for the attachment and detachment of the first and second fastening elements provided on each first fastening member with respect to the second fastening member, not only the fastening but also the peeling operation is performed once. And can be attached and detached reliably and easily.

  Moreover, the recessed part is provided in the intermediate part located between the 1st fastening element and the 2nd fastening element in the side edge of the lateral direction outer side of a fastening base material. For this reason, when inserting a finger between the fastening base material and the second fastening member, the finger is easily inserted between the fastening base material and the second fastening member by inserting the finger at the position of the recess. While being able to insert, a finger can be reliably inserted in the part between a 1st fastening element and a 2nd fastening element between a fastening base material and a 2nd fastening member. As a result, the portion between the first fastening element and the second fastening element in the fastening substrate can be easily gripped with a finger, and the first fastening member can be peeled off smoothly. .

  Moreover, the depth dimension of the recess of the concave portion provided at the side end of the fastening base material is smaller than the dimension along the lateral direction from the side end to the first fastening element and the second fastening element. Therefore, the concave portion provided on the side edge of the fastening base material divides the portion provided with the first fastening element and the portion provided with the second fastening element in the fastening base material, and those parts are attached during the attaching / detaching operation. Loss of unity in movement between parts is avoided. For this reason, it is not necessary to perform the operation | work for attachment / detachment separately with respect to each of the 1st fastening element and the 2nd fastening element of each 1st fastening member, and attachment / detachment of the 1st and 2nd fastening element The advantage of the present invention that can be performed simultaneously in one attachment / detachment operation is not impaired.

  According to the second aspect of the present invention, at least the laterally outward portion of the first fastening element and the second fastening element of each first fastening member at the edges of the first fastening member that are opposed to each other in the longitudinal direction. In addition, an interval enlarging portion that is inclined or curved in a direction away from each other in the longitudinal direction is provided toward the outer side in the lateral direction. Since the edges on the inner side in the longitudinal direction of the first and second fastening elements have such a configuration, when the first fastening member is peeled off from the second fastening member, in the fastening base material By applying a force to the portions on both sides in the longitudinal direction of the intermediate portion so as to push the portions against the intermediate portion in the longitudinal direction, the intermediate portion of the fastening base material is approximately in a direction away from the second fastening member. It rises in Yamagata. Thereby, a gap for inserting a finger is formed between the intermediate portion of the fastening base material and the second fastening member. As a result, it becomes easy to insert a finger between the intermediate portion of the fastening base material and the second fastening member, and the portion between the first fastening element and the second fastening element on the fastening base material is fingered. It can be easily gripped and the first fastening member can be peeled off smoothly.

  According to invention of Claim 3, the crease | fold part is provided in the fastening description of the 1st fastening member. This crease portion is processed so as to be bent more easily than other portions of the fastening base material, and is located at the approximate center in the vertical direction of the concave portion provided in the fastening base material when viewed from the lateral direction. It extends along the substantially horizontal direction from the said side end toward the inner side of the horizontal direction. Therefore, when the first fastening member is peeled off, a force is applied to the longitudinally opposite sides of the intermediate portion of the fastening substrate so as to push the portion inwardly in the longitudinal direction. A first fastening element and a second fastening element of the fastening base material so that the crease part of the fastening base material becomes a peak when the substantially central part of the longitudinal direction of the concave portion of the material is raised in a substantially mountain shape; The portion between the two can be smoothly deformed into a substantially mountain shape. Accordingly, a gap for inserting a finger can be formed more smoothly between the intermediate portion of the fastening base material and the second fastening member. As a result, it becomes easy to insert a finger between the portion where the concave portion is provided in the intermediate portion of the fastening base material and the second fastening member, and the first fastening element and the second fastening element in the fastening base material. The part between the two can be easily grasped with a finger, and the first fastening member can be peeled off smoothly.

  According to invention of Claim 4, a crease part exceeds the side edge of the lateral direction outside of the 1st fastening element and the 2nd fastening element from the approximately said side end of a fastening base material, It extends toward the inner side in the lateral direction. For this reason, when a force is applied so as to push the portions on both sides in the longitudinal direction of the intermediate portion of the fastening base material toward the intermediate portion side, the substantially central portion in the longitudinal direction of the concave portion of the fastening base material is second fastened. In order to insert a finger between the second fastening member and the portion between the first fastening element and the second fastening element of the fastening base material, which is more easily raised in a substantially chevron shape in a direction away from the member. The gap is more likely to occur.

  According to invention of Claim 5, since a crease part is formed by pressing a fastening base material partially, a crease part can be formed in a fastening base material by simple processing, and disposable by formation of a crease part Decrease in manufacturing efficiency of diapers can be avoided.

  According to invention of Claim 6, since the recessed part provided in a fastening base material has a smooth curvilinear hollow shape, the hollow shape of the recessed part 34 becomes easy to follow the shape of a finger | toe. When peeling off the first fastening member, it is possible to smoothly insert a finger into a portion between the first fastening element and the second fastening element between the fastening base material and the second fastening member. it can.

  According to the seventh aspect of the present invention, when the first fastening member is peeled off, between the first fastening element and the second fastening element between the fastening base material and the second fastening member. One or two fingers can be surely inserted into this part, and the part between the first fastening element and the second fastening element in the fastening substrate can be gripped by the finger.

It is a top view of the deployment state of the disposable diaper concerning one embodiment of the present invention. It is a perspective view which shows a structure in the state with which the disposable diaper of FIG. 1 was worn. It is a top view which shows the structure of a fastening member. It is a figure which shows a mode at the time of peeling a fastening member from a fastening sheet. Fig.5 (a) is a top view of the part by which the crease | fold part of the fastening base material was provided, FIG.5 (b) is sectional drawing along the AA line of Fig.5 (a). It is a figure which shows the modification of the fastening member of FIG.

  FIG. 1 is a plan view of a deployed state of a disposable diaper (hereinafter simply referred to as “diaper”) according to an embodiment of the present invention, and FIG. 2 is a perspective view showing a configuration of the worn state of the diaper. In addition, in this specification, the horizontal direction X and the vertical direction Y are based on the state where the diaper 1 is unfolded as shown in FIG. 1, and correspond to the wearer's left-right direction and front-rear direction. Further, the upper side in FIG. 1 corresponds to the rear side with respect to the wearer.

  As shown in FIGS. 1 and 2, the diaper 1 includes a diaper main body 2, left and right fastening members 3 corresponding to left and right first fastening members, and a fastening sheet 4 corresponding to a second fastening member. It is configured with.

  The diaper main body 2 includes an inner sheet member 11, an outer sheet member 12, and an absorbent core 13, and is applied to a region including a wearer's crotch. At least a part of the inner sheet member 11 has liquid permeability. The inner sheet member 11 includes an inner sheet member main body 21, left and right standing sheet portions 22, and left and right elastic members 23.

  The inner sheet member main body 21 of the inner sheet member 11 is disposed on the skin surface side of the absorbent core 13. The left and right standing sheet portions 22 are provided along the vertical direction Y with a gap in the lateral direction X on the skin surface side of the inner sheet member main body 21, and in a direction (skin surface side) away from the inner sheet member main body 21. It is possible to stand up. The left and right elastic members 23 are respectively provided in the extended state in the longitudinal direction Y at the tip portions of the left and right upright seat portions 22, and the upright seat portions 22 are raised toward the wearer's skin surface by the contraction force. Let The elastic member 23 and the upright sheet portion 22 constitute a three-dimensional gather, and side leakage of urine and feces excreted by the three-dimensional gather is prevented.

  The inner sheet member main body 21 and the upright sheet portion 22 of the inner sheet member 11 are configured by, for example, a top sheet 24 and left and right side sheets 25. The top sheet 24 has liquid permeability, and is disposed along the vertical direction Y at the central portion in the horizontal direction X of the inner sheet member main body 21. As a material of the top sheet 24, for example, a hydrophilic nonwoven fabric or the like is used.

  The left and right side sheets 25 have liquid impermeability, and the vertical direction Y is overlapped from the skin surface side on both sides of the top sheet 24 in the horizontal direction X (for example, edges on both sides in the horizontal direction X). , And are joined to the portions of the top sheet 24 on both sides in the lateral direction X (for example, edges on both sides in the lateral direction X) by a joining means such as an adhesive (for example, hot melt adhesive). As a material of the side sheet 25, for example, a water-repellent nonwoven fabric or the like is used. A portion on the inner side in the lateral direction X of the side seat 25 is configured to be able to stand up in a direction away from the top sheet 24 (skin surface side), and constitutes a standing seat portion 22. In addition, in this embodiment, although the standing sheet | seat part 22 was comprised by the part of the inner side of the horizontal direction X of the side seat 25, not only this structure but a various structure is employable.

  The outer sheet member 12 is liquid-impermeable and is disposed on the outer surface side of the absorbent core 13. More specifically, the outer sheet member 12 includes, for example, a non-woven sheet, a liquid-impervious resin film bonded to the skin side of the non-woven sheet, and portions around the left and right legs of the outer sheet member 12. And an elastic member 26 around the legs arranged in a stretched state. As the nonwoven fabric sheet, for example, a synthetic fiber nonwoven fabric having water repellency is used. As the resin film, for example, a synthetic resin film such as polyethylene (a liquid impervious and air permeable film is preferable) is used.

  The inner sheet member 11 and the outer sheet member 12 are joined by an adhesive (for example, a hot melt adhesive) so as to sandwich the absorbent core 13 therebetween. Absorption core 13 absorbs excretion fluid (for example, water contained in urine or feces) excreted by the wearer. More specifically, the absorbent core 13 is configured to include at least one of a fiber assembly including a liquid absorbent polymer and an aggregate of aggregated fibers. Moreover, in this diaper 1, the waist elastic members 27 and 28 are provided in the state extended | stretched along the edge part of the front side of the diaper main body 11, and a rear side.

  As shown in FIG. 3, the right and left fastening members 3 are joined and joined to the edges on both sides in the lateral direction X in the rear portion located on the rear side in the longitudinal direction Y of the diaper main body 1. Used for. More specifically, each fastening member 3 includes a fastening base material 31 and substantially sheet-like first and second fastening elements 32 and 33. The fastening base material 31 is a sheet-like member formed of a nonwoven fabric or the like, and the inner side portion in the lateral direction X is sandwiched between the inner sheet member 11 and the outer sheet member 12 of the diaper main body 2. In the state, it is joined to the diaper main body 2 by an adhesive (for example, hot melt adhesive).

  The first and second fastening elements 32, 33 can be detachably fastened to a fastening sheet 4 to be described later, and are closer to the outward side in the lateral direction X on the skin surface side of the fastening base material 31. Are aligned along the longitudinal direction Y, and are joined to the fastening substrate 31 by joining means such as an adhesive. Between the first fastening element 32 and the second fastening element 33, an interval of a dimension D <b> 1 is provided in the longitudinal direction Y. The lateral edges 32a, 33a on the lateral direction X outward side of the first and second fastening elements 32, 33 are lateral lateral X inward side from the lateral end X lateral side end 31a of the fastening base 31. It is located at a position where only the dimension D2 enters.

  The first and second fastening elements 32 and 33 and a fastening sheet 4 described later constitute a so-called hook-and-loop fastener constituted by a loop material and a hook material that are detachably engaged. A hook material is used for the first and second fastening elements 32 and 33, and a loop material is used for the fastening sheet 4. A plurality of loop structures are formed on the surface of the fastening sheet 4. A plurality of hook structures that are detachably engaged with the loop structure of the fastening sheet 4 are formed on the surfaces of the fastening elements 32 and 33. As a modification, a loop material may be used for the first and second fastening elements 32 and 33 and a hook material may be used for the fastening sheet 4. Further, the first and second fastening elements 32 and 33 and the fastening sheet 4 are not limited to the hook-and-loop fastener, and any configuration can be adopted as long as they can be detachably fastened to each other. For example, as the first and second fastening elements 32 and 33 and the fastening sheet 4, an adhesive tape and an adhesive sheet to which the adhesive tape is detachably attached may be used.

  The fastening sheet 4 has a sheet-like form, and is joined to a front portion on the outer surface side of the outer sheet member 12, and first and second fastening elements 32 provided to the left and right fastening members 3, 33 is detachably attached.

  Further, a concave portion 34 is provided in an intermediate portion 31 b located between the first fastening element 32 and the second fastening element 33 at the side end 31 a of the fastening base material 31. The recess 34 has a depth dimension D3 in which the side end 32b of the fastening base 31 is smaller than the dimension D2 between the side end 32b and the side edges 32a and 33a of the first and second fastening elements 32 and 33. In part by being recessed inward in the lateral direction X. The concave portion 34 has a smooth curved dent shape when viewed from the thickness direction of the fastening base material 31.

  The dimension D1 of the distance along the longitudinal direction Y between the first fastening element 32 and the second fastening element 32 of each fastening member 3 is such that the first and second fastening elements 32 and 33 are fastened to the fastening sheet 4. 1 or 2 fingers can be inserted into the portion between the first fastening element 32 and the second fastening element 33 between the fastening base material 31 and the fastening sheet 4. Dimensions. As a specific example of the dimension D1, when it is mainly assumed that one finger is inserted between the first fastening element 32 and the second fastening element 33, for example, a range of about 25 mm to about 35 mm. When it is mainly assumed that two fingers are inserted, for example, it is set to any value within a range of about 45 mm to about 55 mm.

  With the above-described configuration of the diaper 1 according to the present embodiment, an operator who attaches and detaches the diaper 1 fixes each fastening member 3 to the fastening sheet 4, and the first and second fastening elements 32 and 33. Is hidden on the skin surface side of the fastening base material 31, and the first fastening element 32 and the second fastening element 32 in the fastening base material 31 are used as a mark by using the concave portion 34 provided on the side end 31 a of the fastening base material 31. The intermediate portion 31b with the fastening element 33 can be easily recognized. Therefore, the operator can easily recognize and grip the portion between the first fastening element 32 and the second fastening element 33 in the fastening base material 31 during the peeling operation of the fastening member 3. And the force for the peeling given to the fastening member 3 from an operator's hand by grasping the part which concerns in the fastening base material 31, and peeling off the fastening member 3 from the fastening sheet | seat 4 is 1st and 2nd. The first and second fastening elements 32, 33 can be peeled from the fastening sheet 4 at the same time by acting on the fastening elements 32, 33 almost equally at the same time. As a result, when the first and second fastening elements 32 and 33 provided on each fastening member 3 are attached to and detached from the fastening sheet 4, not only fastening but also peeling is performed once. And can be attached and detached reliably and easily.

  Further, the recess 34 is provided in an intermediate portion 31 b located between the first fastening element 32 and the second fastening element 33 at the lateral end 31 a in the lateral direction X of the fastening base material 31. . For this reason, when inserting a finger between the fastening base material 31 and the fastening sheet 4, the finger is easily inserted between the fastening base material 31 and the fastening sheet 4 by inserting the finger at the position of the recess 34. And the finger can be reliably inserted into the portion between the first fastening element 32 and the second fastening element 33 between the fastening base material 31 and the fastening sheet 4. As a result, the portion between the first fastening element 32 and the second fastening element 33 in the fastening base material 31 can be easily grasped with a finger, and the fastening work of the fastening member 3 can be performed smoothly. it can.

  Further, the dimension D1 of the distance between the first fastening element 32 and the second fastening element 33 of each fastening member 3 is set to a size corresponding to the insertion of one or two fingers as described above. Therefore, when the fastening member 3 is peeled off, one or two fingers are provided in the portion between the first fastening element 32 and the second fastening element 33 between the fastening base material 31 and the fastening sheet 4. A book can be inserted reliably and the part between the 1st fastening element 32 and the 2nd fastening element 33 in the fastening base material 31 can be hold | gripped with a finger | toe.

  Moreover, since the recessed part 34 provided in the fastening base material 31 has a smooth curvilinear recessed shape, the recessed shape of the recessed part 34 becomes easy to follow the shape of a finger | toe. For this reason, when the fastening member 3 is peeled off, a finger is smoothly inserted into the portion between the first fastening element 32 and the second fastening element 33 between the fastening base material 31 and the fastening sheet 4. can do.

  In addition, the depth dimension D3 of the recess 34 provided in the side end 31a of the fastening base material 31 is the lateral direction X from the side end 31a to the side edges 32a, 33a of the first and second fastening elements 32, 33. Is smaller than the dimension D2 along. Therefore, the recessed portion 34 provided at the side end 31a of the fastening base material 31 separates the portion of the fastening base material 31 where the first fastening element 32 is provided from the portion where the second fastening element 33 is provided. It is avoided that the movement becomes inconsistent between the parts during the attaching / detaching operation. For this reason, it is not necessary to perform the operation | work for attachment / detachment separately with respect to each of the 1st fastening element 32 and the 2nd fastening element 33 of each fastening member 3, 1st and 2nd fastening element 32, The advantage of this embodiment that 33 can be attached and detached simultaneously by one attachment and detachment work is not impaired.

  Further, in the present embodiment, the first fastening element 32 and the second fastening element 33 of each fastening member 3 have the edge portions 32b and 33b facing each other in the longitudinal direction Y, on the outer side in the lateral direction X. On the other hand, there are provided interval expanding portions 35 and 36 which are inclined or curved in a direction away from each other with respect to the vertical direction Y. In the present embodiment, the interval expanding portions 35 and 36 have an inclined shape that expands toward the outer side in the lateral direction X, but may have a curved shape such as a trumpet shape. Further, in the present embodiment, substantially the entire area in the lateral direction X of the edge portions 32b and 33b of the first and second fastening elements 32 and 33 is defined as the interval expanding portions 35 and 36, but the lateral direction of the edge portions 32b and 33b. A part on the outer side of X may be used as the interval expanding portions 35 and 36.

  Therefore, when the fastening member 3 is peeled off from the fastening sheet 4, as shown in FIG. 4, the portions on both sides in the longitudinal direction Y of the intermediate portion 31 b in the fastening base material 31, as shown by arrows F 1 and F 2. By applying a force so as to push the intermediate portion 31 toward the intermediate portion side in the longitudinal direction Y, the intermediate portion 31 b of the fastening base material 31 is raised in a substantially mountain shape in a direction away from the fastening sheet 4. Accordingly, a gap 41 for inserting a finger is formed between the intermediate portion 31 b of the fastening base material 31 and the fastening sheet 4. As a result, it becomes easy to insert a finger between the intermediate portion 31 b of the fastening base material 31 and the fastening sheet 4, and the portion between the first fastening element 32 and the second fastening element 33 in the fastening base material 31. Can be easily gripped with a finger, and the fastening member 3 can be peeled off smoothly.

  Moreover, in this embodiment, as shown in FIG. 2, the crease | fold part 42 is provided in the fastening base material 31. As shown in FIG. The crease part 42 is provided by processing a part of the fastening member 42 so as to be bent more easily than the other part of the fastening base material 31. Further, the crease portion 42 is positioned substantially at the center in the longitudinal direction Y of the recess 34 provided in the fastening base material 31 when viewed from the lateral direction X, and is substantially directed inward in the lateral direction X from the substantially lateral end 31a. It extends along the lateral direction X. The inner end 42a in the lateral direction X of the fold portion 42 is inward in the lateral direction X relative to the lateral edges 32a and 33a on the outer side in the lateral direction X of the first and second fastening elements 32 and 33. Located on the side. The end part 42a of the crease part 42 is located in the vicinity of the side edges 32c and 33c on the inner side in the lateral direction X of the first and second fastening elements 32 and 33 when viewed from the longitudinal direction Y, for example. .

  Such a fold part 42 is formed by, for example, partially pressing the fastening substrate 31 as shown in FIGS. 5 (a) and 5 (b). In the configuration shown in FIGS. 3 and 5A, the crease portion 42 is formed by the press portion 42 b that is intermittently arranged in the lateral direction X on the fastening base material 31. The crease portion 42 may be formed by a press portion that is continuous with.

  By providing the crease portion 42 on the fastening base material 31 as described above, when the fastening member 3 is peeled off, the portion is placed on both sides of the intermediate portion 31b in the longitudinal direction Y of the fastening base material 31 in the intermediate portion 31b. Applying a force so as to push to the side, when the substantially central portion in the longitudinal direction Y of the concave portion 34 of the fastening base material 31 is raised in a substantially mountain shape, the fold portion 42 of the fastening base material 31 becomes a peak, The portion between the first fastening element 32 and the second fastening element 33 of the fastening substrate 31 can be smoothly deformed into a substantially chevron shape. Thereby, the clearance gap 41 for inserting a finger | toe between the intermediate part 31b of the fastening base material 31 and the fastening sheet | seat 4 can be formed more smoothly. As a result, it becomes easy to insert a finger between the portion where the recess 34 is provided in the intermediate portion 31 b of the fastening base material 31 and the fastening sheet 4, and the first fastening element 32 and the second fastening element 32 in the fastening base material 31. The part between the wearing elements 33 can be easily grasped with a finger, and the fastening member 3 can be peeled off smoothly.

  Further, as described above, the crease portion 42 extends beyond the side edges 32a and 33a on the outer side in the lateral direction X of the first and second fastening elements 32 and 33 from the substantially side end 31a of the fastening base material 31. , Extending inward in the lateral direction X. For this reason, when a force is applied to push the portions on both sides in the longitudinal direction Y of the intermediate portion 31b of the fastening base material 31 toward the intermediate portion 31b, the substantially central portion in the longitudinal direction Y of the concave portion 34 of the fastening base material 31. Is more likely to rise in a substantially chevron shape in a direction away from the fastening sheet 4, and between the fastening sheet 4 and a portion between the first fastening element 31 and the second fastening element of the fastening base material 31. The gap 41 for inserting the finger is more likely to be generated.

  Moreover, since the crease part 42 is formed by partially pressing the fastening base material 31, the crease part 42 can be formed on the fastening base material 31 by a simple process, and the production efficiency of the diaper 1 by the formation of the crease part 42. Can be avoided.

  As a modification of the fastening member 3 shown in FIG. 3, as shown in FIG. 6, the edges 32b and 33b of the first and second fastening elements 32 and 33 facing each other in the longitudinal direction Y are formed in an inclined shape or the like. The width between the edges 32b and 33b facing each other in the longitudinal direction Y of the first and second fastening elements 32 and 33 is substantially parallel to the lateral direction X. The configuration may be substantially constant. Further, the crease portion 42 may be omitted as shown in FIG.

  DESCRIPTION OF SYMBOLS 1 Diaper, 2 diaper main body, 3 Fastening member, 4 Fastening sheet, 11 Inner sheet member, 12 Outer sheet member, 13 Absorption core, 21 Inner sheet member main body, 22 Standing sheet part, 23 Elastic member, 24 Top sheet, 25 Side seat, 26 Leg elastic member, 27, 28 Waist elastic member, 31 Fastening base material, 32 First fastening element, 33 Second fastening element, 34 Recess, 35, 36 Spacing enlargement part, 42 Crease part, X Horizontal direction, Y Vertical direction.

Claims (7)

A disposable diaper to be worn in an area including the wearer's crotch,
A diaper body that has an absorbent core that absorbs liquid and is applied to an area that includes the crotch of the wearer;
Left and right first fastening members provided at both lateral edges of the rear portion located on the rear side of the diaper body;
A second fastening member provided on the outer surface side of the front portion located on the front side of the diaper main body, wherein the left and right first fastening members are detachably fastened;
With
The first fastening member is
A fastening base material joined to the left or right edge of the rear portion of the diaper body;
The second side of the fastening base material is arranged side by side with the vertical direction at a predetermined interval on the inner side in the lateral direction with respect to the laterally outer side edge on the skin surface side of the fastening base material. First and second fastening elements that are detachably fastened to the fastening member;
In the intermediate portion located between the first fastening element and the second fastening element at the laterally outward side edge of the fastening base material, the side edge extends from the side edge to the first side. A recess provided by being partially recessed inward in the lateral direction with a depth dimension smaller than the dimension along the lateral direction to the first fastening element and the second fastening element;
A disposable diaper characterized by comprising. The disposable diaper according to claim 1,
The lateral direction of the first fastening element and the second fastening element of each of the first fastening members are at least laterally opposed to each other in the longitudinal direction. A disposable diaper characterized in that an outwardly-facing side is provided with an interval expanding portion that is inclined or curved in a direction away from the longitudinal direction. In the disposable diaper according to claim 1 or 2,
The first fastening member is
Processed to bend more easily than other portions of the fastening base material, and is located at substantially the center in the vertical direction of the concave portion provided in the fastening base material when viewed from the lateral direction, and substantially at the side end. The disposable diaper further comprising a fold portion extending substantially along the lateral direction from the inner side toward the inner side in the lateral direction. The disposable diaper according to claim 3,
The crease portion extends from the substantially side end of the fastening base material to the laterally outward side edge of the first fastening element and the second fastening element beyond the lateral outer side edge. A disposable diaper characterized by extending toward the side. In the disposable diaper according to claim 3 or claim 4,
The disposable diaper is characterized in that the fold portion is formed by partially pressing the fastening base material. In the disposable diaper in any one of Claim 1 thru | or 5,
The disposable diaper characterized in that the concave portion provided in the fastening base material has a smooth curved dent shape. The disposable diaper according to any one of claims 1 to 6,
The distance along the longitudinal direction between the first fastening element and the second fastening element of each first fastening member is determined by the first fastening element and the second fastening element. 2 In a state of being fastened to the fastening member, one finger or a finger is provided at a portion between the first fastening element and the second fastening element between the fastening base material and the second fastening member. A disposable diaper characterized in that two of them are insertable dimensions.

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