JP6349148B2 - Disposable diapers - Google Patents

Description

  The present invention relates to a deployable disposable diaper for a child weighing 3000 g or less.

  The unfoldable disposable diaper has a pair of fastening tapes (fastening members) that extend from the rear waist area toward the outside in the width direction after being applied to the wearer's body. It is fixed to the wearer by being fastened. Moreover, there exists what formed the whole exterior sheet | seat of the disposable diaper with the member which can fix a fastening tape. However, in that case, there is no front target tape which has been a guide for the fastening position of the fastening dome, and it becomes difficult to attach the disposable diaper. In view of this, a disposable diaper has been proposed in which target printing (for example, numbers and illustrations), which serves as an indication of the fastening position of the fastening tape, can be viewed through an exterior sheet (see, for example, Patent Document 1).

JP 2002-253608 A

  In order to be able to accommodate wearers of various sizes, the target printing is generally applied to both ends in the width direction of the front waistline region. However, when wearing disposable diapers for small babies weighing 3000 g or less, the consciousness that they want to wear loosely works, and fastening tape is fastened to both ends in the width direction of the front waist area according to the target printing position. It is easy to be done. If it does so, a clearance gap will arise in a trunk periphery opening and a leg periphery opening, and the problem that excrement leaked easily occurred.

  This invention is made | formed in view of the above conventional problems, The objective is to suppress the leakage of excrement in the deployment-type disposable diaper for the children whose weight is 3000 g or less. .

The main invention for achieving the above object has a longitudinal direction, a width direction, and a thickness direction orthogonal to each other, and includes a front waistline region, a crotch region, and a rear waistline region, and a child weighing 3000 g or less. An unfoldable disposable diaper for
An absorber,
A pair of fastening members extending from the rear waistline region toward the outside in the width direction;
A leg-hole stretchable member provided along a pair of leg-hole openings formed by the pair of fastening members being fastened to the front waistline region and provided on the outer side in the width direction than the absorber. When,
A target display unit indicating a position where the pair of fastening members should be fastened to the front waistline region;
Have
The absorber includes an overlapping region overlapping with the target display unit in the thickness direction in the longitudinal direction,
The length in the width direction of the target display unit is equal to or less than the maximum length in the width direction of the absorber in the overlapping region ,
A pair of three-dimensional gathers standing on the wearer side are provided along the longitudinal direction on both sides in the width direction,
In the width direction,
The standing point of the three-dimensional gather is located inside the outer end in the width direction of the stretchable region where the leg-holes stretchable member is provided, and outside the outer end in the width direction of the absorber. It is a disposable diaper characterized by doing.
Other features of the present invention will become apparent from the description of the present specification and the accompanying drawings.

  ADVANTAGE OF THE INVENTION According to this invention, the leakage of excrement can be suppressed in the deployment-type disposable diaper for the children whose weight is 3000 g or less.

It is a schematic plan view of the skin side of the wearer of a disposable diaper. It is a schematic plan view of the non-skin side of a disposable diaper. 3A to 3C are cross-sectional views of the disposable diaper at positions AA, BB, and CC in FIG. It is a schematic perspective view of the disposable diaper at the time of wear. FIG. 5A is an explanatory diagram of a state in which a fastening tape is fastened to the outer end portion in the width direction of the front waistline region, and FIG. 5B is a state in which the fastening tape is fastened to a center portion in the width direction of the front waistline region. It is explanatory drawing. 6A and 6B are explanatory diagrams of postures of low-weight children. It is a figure explaining the state by which the sheet | seat member between an absorber core and a leg periphery elastic member was folded. It is explanatory drawing of the state which fastened fastening tapes. It is explanatory drawing of the measuring method of fastening force.

  At least the following matters will become apparent from the description of the present specification and the accompanying drawings.

A deployable disposable diaper for a child having a longitudinal direction, a width direction, and a thickness direction orthogonal to each other, including a front waistline region, a crotch region, and a rear waistline region and having a weight of 3000 g or less, An absorber, a pair of fastening members extending from the rear waistline region toward the outer side in the width direction, and a pair of fastening members formed by fastening the pair of fastening members to the front waistline region A target display indicating a leg stretchable member provided along the leg opening and provided on the outer side in the width direction than the absorber, and a position where the pair of fastening members should be fastened to the front waistline region. And the absorber includes an overlapping region that overlaps the target display unit in the thickness direction in the longitudinal direction, and the length of the target display unit in the width direction is in the overlapping region. The absorber Or less the direction of maximum length, a disposable diaper characterized by.
According to such a disposable diaper, the user can be guided so that the fastening member is fastened to the central portion in the width direction of the front waist region by the target display portion that overlaps the absorber in the thickness direction. And a fastening member is fastened to the center part of the width direction of a front waist area, a waist opening and leg opening can be made small, and the leakage of excrement from each opening can be suppressed. Further, even if the wearer takes an M-shaped posture in which the legs are strongly bent in an M-shape until both knees are located in the abdomen, the contact between the wearer's leg and the fastening member is avoided and the fastening member is detached. Can prevent the leakage of excrement.

In such disposable diapers, a pair of three-dimensional gathers standing on the wearer side is provided along the longitudinal direction on both sides in the width direction, and the standing points of the three-dimensional gathers are the leg-hole stretchable members. The disposable diaper is located between an outer end in the width direction of the stretchable region provided and an outer end in the width direction of the absorber.
According to such a disposable diaper, it is possible to prevent the three-dimensional gather from coming into close contact with the wearer along with the absorbent body and the leg-stretchable elastic member. Therefore, the excrement can be blocked by the standing three-dimensional gather, and the leakage of excrement can be suppressed.

In this disposable diaper, the rising point of the three-dimensional gather is located on the outer end side in the width direction of the absorbent body rather than the inner end in the width direction of the stretchable region. It is a disposable diaper.
According to such a disposable diaper, since the position of the absorber is more stable than the leg elastic member that moves together with the wearer's leg, the three-dimensional position is closer to the absorber than the leg elastic member. By providing the gathering points, the solid gathering points can be stabilized. Therefore, the three-dimensional gather can be raised up beautifully and the leakage of excrement can be suppressed.

In this disposable diaper, the absorbent body includes an absorbent core and a covering material for the absorbent core, and the leg-stretchable elastic member is provided from an outer end in the width direction of the absorbent core. The disposable diaper is characterized in that the length in the width direction to the inner end in the width direction of the stretchable region is equal to or greater than the length in the width direction of the stretchable region.
According to such a disposable diaper, it is possible to prevent the stretchable region from being pulled inward and to fall down, and to adhere the stretchable region to the wearer's leg. Therefore, the fit around the leg is improved, and excrement leakage can be suppressed.

This is a disposable diaper, and one side surface in the thickness direction of one fastening member of the pair of fastening members and the other side surface in the thickness direction of the other fastening member, A disposable diaper characterized in that it can be fastened with a fastening force of 0.1 N / 10 mm or more.
According to such a disposable diaper, the fastening member can be fastened at a more central position in the width direction of the front waistline region, and the waistline opening and the leghole opening can be made smaller. Therefore, the leakage of excrement can be suppressed even when worn on a particularly small low-weight child.

=== General configuration of disposable diaper ===
The disposable diaper according to the present embodiment is a deployable disposable diaper for a child having a weight of 3000 g (gram) or less (hereinafter referred to as a low-weight child). It is a suitable diaper for very low birth weight infants with a weight of less than 1000 g and very low birth weight infants with a weight of less than 1000 g.

  FIG. 1 is a schematic plan view of the wearer's skin side (inside) of the disposable diaper 1 in the expanded and extended state, and FIG. 2 is a non-skin side (outside) of the disposable diaper 1 in the expanded and extended state. It is a schematic plan view. 3A to 3C are cross-sectional views of the disposable diaper 1 at positions AA, BB, and CC in FIG. FIG. 4 is a schematic perspective view of the disposable diaper 1 when worn. As shown in the figure, the disposable diaper 1 has a longitudinal direction, a width direction, and a thickness direction that are orthogonal to each other, and a front waistline region 1a that covers the wearer's abdomen, and a back side that covers the wearer's back. A waistline region 1c and a crotch region 1b located between the front waistline region 1a and the rear waistline region 1c are provided.

  As shown in FIG. 3, the disposable diaper 1 includes an absorbent body 4 between a liquid-permeable top sheet 2 and a liquid-impermeable back film 3. The absorbent body 4 extends in the longitudinal direction from the front waistline area 1a to the back waistline area 1c, and covers the absorbent core 41 (for example, composed of pulverized pulp or superabsorbent polymer) that absorbs and holds excreta. And a liquid-permeable covering material 42 (for example, a tissue sheet or a spunbonded nonwoven fabric). In the present embodiment, the planar shape of the absorber 4 is a rectangle, and the planar shape of the absorber core 41 is an hourglass shape with a narrowed central portion in the longitudinal direction. Moreover, the exterior sheet 5 (for example, nonwoven fabric) which comprises the exterior of the disposable diaper 1 whole is provided in the non-skin side of the back film 3. FIG. Although not shown, in order to improve the fit around the waist, a stretchable member (for example, a stretchable sheet member or a thread-like stretchable member) that can be stretched in the width direction may be provided in the rear waistline region 1c.

  The rear waistline region 1c is provided with a pair of fastening tapes 10 (fastening members) extending to both outer sides in the width direction. As shown in FIG. 2, a target tape 14 having a rectangular planar shape is provided in the front waistline region 1 a on the non-skin side surface of the exterior sheet 5. The base material 11 of the fastening tape 10 is provided with a hook sheet 12 on the skin side surface in the thickness direction (that is, the surface facing the target tape 14 when folded to the front waistline region 1a side). On the other hand, a target sheet 13 is provided on the non-skin side surface of the substrate 11. The hook sheet 12 (for example, a sheet including a male material for a hook-and-loop fastener) is configured to be attachable to and detachable from a target sheet 13 and a target tape 14 (for example, a sheet or a nonwoven fabric including a female material for a hook-and-loop fastener). . In addition, the structure which does not provide the target tape 14, but fastens the fastening tape 10 directly to the exterior sheet | seat 5 may be sufficient. The target sheet 13 and the target tape 14 may be made of different materials.

  In the front waistline area 1a on the non-skin side of the back film 3, a target display unit 15 (for example, a rectangle painted in a color different from the surroundings) indicating a position where the pair of fastening tapes 10 should be fixed to the front waistline area 1a, A hatched area in FIG. 2 is printed. Note that the exterior sheet 5 and the target tape 14 positioned on the non-skin side of the target display unit 15 are members that allow the target display unit 15 to be visually recognized from the outside. In the present embodiment, the target tape 14 is made slightly larger than the target display unit 15. However, the present invention is not limited to this, and the size of the target tape 14 and the target display unit 15 may be the same.

  When the disposable diaper 1 is worn, the disposable diaper 1 is first folded in two in the longitudinal direction while being applied to the wearer, and then the pair of fastening tapes 10 and their peripheral parts are folded to the center side in the width direction. A pair of fastening tapes 10 is fastened to the target tape 14 in the region 1a. Then, as shown in FIG. 4, a waist opening HB and a pair of leg openings HL are formed.

  As shown in FIG. 1, in the disposable diaper 1 in the expanded and extended state, the central portion in the longitudinal direction is constricted, and both side edges in the width direction of the crotch region 1b are curved in an arc shape, and the curved portion is at the time of wearing. A pair of leg openings HL are formed. Further, the disposable diaper 1 extends along the pair of leg openings HL (in the present embodiment, along the longitudinal direction) and extends around the legs in the width direction beyond the absorbent body 4 so as to extend and contract in the longitudinal direction. A sex member 6 is provided. The leg-holes stretchable member 6 is fixed between the three-dimensional gather sheet 21 (described later), the back film 3 and the exterior sheet 5 in a state of extending in the longitudinal direction. Therefore, in the disposable diaper 1 in the natural state, the leg-hole stretchable member 6 contracts, and a leg-hole gather is formed at the peripheral edge of the leg-hole opening HL to fit around the wearer's leg.

  In this embodiment, the leg stretchable member 6 is made of a stretchable sheet member (for example, a stretchable film in which a thermoplastic elastomer resin such as urethane or styrene is melted to form a film or stretchable fibers. Non-woven fabric), but is not limited thereto. For example, a plurality of thread-like stretchable members (for example, a thread-like polyurethane stretchable fiber or a thread-like natural rubber) may be provided as the leg-stretchable stretchable members 6 at intervals in the width direction.

  In addition, a pair of three-dimensional gathers 20 standing on the skin side (wearer side) are provided along the longitudinal direction on both sides in the width direction of the disposable diaper 1 (skin side surface of the top sheet 2). Each three-dimensional gather 20 includes a three-dimensional gather sheet 21 and a three-dimensional gather elastic member 22. As shown in FIG. 3, the outer ends in the width direction of the three-dimensional gather sheet 21 and the exterior sheet 5 coincide. On the other hand, the center-side end 21a in the width direction of the three-dimensional gather sheet 21 is folded to the top sheet 2 side (non-skin side), and the three-dimensional gather sheet 21 is expanded and contracted between the two-layered three-dimensional gather sheet 21. The elastic member 22 (for example, a thread-like elastic member, which is two elastic members in the present embodiment) is provided. The elastic member 22 for three-dimensional gathers is being fixed to the three-dimensional gather sheet | seat 21 in the state expanded in the longitudinal direction.

  As shown in FIG. 1, the three-dimensional gathered sheet 21 is joined to the top sheet 2 by a first joining portion 23 and a second joining portion 24 (for example, by a region where a hot melt adhesive is applied). . The first joint portions 23 are both end portions in the longitudinal direction of the respective three-dimensional gather sheets 21 and the top sheet 2, and are provided closer to the center side in the width direction than the second joint portions 24. In the present embodiment, three first joint portions 23 are arranged in the width direction at each longitudinal end portion of each three-dimensional gather 20. The second joint 24 extends from one end to the other end in the longitudinal direction of each three-dimensional gather sheet 21 and the top sheet 2. Therefore, the three-dimensional gather sheet 21 between the first joint portions 23 positioned at both ends in the longitudinal direction starts from the second joint portion 24 as a starting point and is contracted from the top sheet 2 by the contraction force of the three-dimensional gather elastic member 22. To stand up.

  Moreover, the disposable diaper 1 of this embodiment is for low weight children. Therefore, the state where the product is extended without wrinkles, specifically, the state where the dimension of the member (for example, the exterior sheet 5) constituting the disposable diaper 1 is equal to or close to the dimension of the single member. The product dimensions should be as follows. The product length in the longitudinal direction when the product is extended in the longitudinal direction is in the range of 210 to 330 mm. Specifically, the product length for a weight less than 2500 g is 310 mm, the product length for a weight less than 1500 g is 270 mm, and the weight is less than 1000 g. The product length is preferably 230 mm. The waist dimension (peripheral length of the waist opening HB) is in the range of 160 to 295 mm. Specifically, the waist dimension for a weight of less than 2500 g is 273.5 mm, and the waist dimension for a weight of less than 1500 g is 220 mm. The waist dimension is a dimension in a state in which the front end in the width direction of one fastening tape 10 is aligned with the end of the hook sheet 12 in the width direction of the other fastening tape 10 in the width direction. In the case where a sex member is provided, it is a dimension when the product is extended in the width direction.

=== Problems specific to low weight children ===
FIG. 5A is an explanatory diagram of a state in which the fastening tape 10 is fixed to the outer end portion in the width direction of the front waistline region 1a, and FIG. 5B is a diagram illustrating the fastening tape 10 in the center portion in the width direction of the front waistline region 1a. It is explanatory drawing of the state fastened. 6A and 6B are explanatory diagrams of postures of low-weight children. For low-weight children weighing 3000 g or less, there is a desire to loosely wear the disposable diaper 1, and as shown in FIG. 5A, the fastening tape 10 is attached to the outer end of the front waistline region 1 a in the width direction. Easy to fasten. As a result, as shown in FIG. 5B, the circumferential length of the waistline opening HB and the leghole opening HL becomes larger than when the fastening tape 10 is fastened to the center in the width direction of the front waistline region 1a. In particular, low-weight infants who weigh less than 2500 g are born before fat gets on their bodies, so their torso and legs are thinner than general newborns. Therefore, as shown in FIG. 5A, if the disposable diaper 1 is loosely attached, a gap is likely to occur in the waistline opening HB and the leghole opening HL.

  In a low-weight infant, as shown in FIGS. 6A and 6B, the posture when in the womb, that is, the back 30 is curved in a C shape and the legs 31 are in an M shape until both knees are positioned in the abdomen. A strongly bent posture (hereinafter referred to as a positioning posture) is maintained. Therefore, a gap h <b> 1 is likely to occur between the back 30 and the disposable diaper 1. Further, when the fastening tape 10 is fixed to the outer end portion in the width direction of the front waistline region 1a (FIG. 5A), the leg hole opening HL faces the outer side in the width direction, so that the leg hole gather is not the base of the thigh. It will be located on a thin thigh and a gap is likely to occur. Further, when the low-weight child takes a positioning posture, the leg opening HL that has been directed outward in the width direction is brought to the center in the width direction and pulled up to the ventral side, so that the rear side of the leg 31 and the disposable opening are disposed. A gap h <b> 2 is easily generated between the diaper 1. As mentioned above, when a clearance gap arises between the disposable diaper 1 and a wearer, excrement will leak from the clearance gap.

  Further, when the fastening tape 10 is fixed to the outer end portion in the width direction of the front waistline region 1a, as shown in FIG. 6B, the leg 31 of the low-weight infant taking the positioning posture and the fastening tape 10 come into contact with each other. Or a force to turn up the fastening tape 10 and its peripheral portion to the ventral side is strongly generated. If it does so, there exists a possibility that the fastening tape 10 may remove | deviate from the target tape 14, and excrement will leak.

  Therefore, in this embodiment, it aims at suppressing the leakage of excrement in the deployment-type disposable diaper for the children whose weight is 3000 g or less.

=== Target Display Unit 15 ===
In the disposable diaper 1 of this embodiment, the absorber 4 is provided in the center side of the width direction rather than the leg-holes elastic member 6, and the absorber 4 is a target display part 15 in a longitudinal direction as shown in FIG. And an overlapping region A overlapping in the thickness direction. The overlapping area A is an area indicating the position in the longitudinal direction, and one end A1 of the overlapping area A coincides with the end 15a on the rear waistline area 1c side in the longitudinal direction of the target display unit 15, and the other end A2 of the overlapping area A is The end 4a on the front waistline region 1a side in the longitudinal direction of the absorber 4 coincides with the end 4a. And in the disposable diaper 1 of this embodiment, the length L1 of the width direction of the target display part 15 is smaller than the length L2 of the width direction of the absorber 4 in the overlap area | region A. FIG. Further, since the center position CL in the width direction of the target display portion 15 and the center position CL in the width direction of the absorber 4 are aligned, the outer end 15b in the width direction of the target display portion 15 is in the overlapping region A. It is located on the inner side (center side) in the width direction than the outer end 4 b in the width direction (on the same side) of the absorber 4.

  Therefore, the user who has seen the target display unit 15 that is located inside the widthwise direction of the absorbent body 4 positioned at the widthwise center portion stops the fastening tape 10 at the widthwise center portion of the front waistline region 1a. It is induced to wear (FIG. 5B). Therefore, it is possible to prevent the fastening tape 10 from being fixed to the outer end portion in the width direction of the front waistline region in a low-weight child who is conscious of wanting to wear it loosely.

  The fastening tape 10 is fastened to the center portion in the width direction of the front waistline region 1a, so that the circumferences of the waistline opening HB and the leg hole opening HL can be reduced, and between the openings HB and HL and the wearer. It is possible to suppress the occurrence of a gap in the body and to suppress the excrement leakage. Further, as shown in FIG. 5B, the leg opening HL can be directed forward. That is, the leg hole opening HL can be shifted to the center side in the width direction as compared with FIG. 5A to open in the thickness direction. Therefore, the direction of the leg of the low-weight child who takes the positioning posture matches the direction of the leg opening HL, and the leg elastic member 6 along the leg opening HL fits evenly on the outer circumference of the wearer's leg. To do. Moreover, the leg-holes elastic member 6 fits the base of the thigh instead of the thin thigh. Therefore, generation | occurrence | production of the clearance gap in the leg periphery opening HL can be suppressed, and the leakage of the excretion from the leg periphery opening HL can be suppressed. In addition, the leg elastic member 6 can be fitted to the base of the thigh, which moves less than the thigh, so that the position of the leg elastic member 6 can be stabilized. It can be said that it can be suppressed.

  Further, the fastening tape 10 is fastened to the center portion in the width direction of the front waistline region 1a, so that the contact between the fastening tape 10 and the leg of the low-weight child taking the positioning posture is avoided, and the fastening tape 10 is removed from the target tape 14. Can be prevented, and excrement leakage can be suppressed. Moreover, since the fastening tape 10 is a member with comparatively high rigidity, rough skin of a low-weight child can be suppressed by avoiding contact between the leg of the low-weight child having weak skin and the fastening tape 10.

  In addition, the fastening tape 10 is fastened to a region of the target tape 14 that overlaps the absorber 4 by the target display unit 15 that is located inside the width direction of the absorber 4. Therefore, the fastening tape 10 receives a force for turning up the fastening tape 10 from the leg of the low-weight infant taking the positioning posture through the absorber 4 having relatively high rigidity. Therefore, the force to turn up the fastening tape 10 is alleviated by the absorber 4, and the fastening tape 10 can be further prevented from coming off from the target tape 14.

  In the case of a low-weight child, it is said that it is better not to touch the body as much as possible (so-called minimum handling) in order to stabilize breathing and prevent intracerebral hemorrhage. Therefore, in the disposable diaper 1 for low-weight children, suppressing the leakage of excrement and reducing the number of replacements of the disposable diaper 1 not only reduces the burden on nurses and mothers, but also the life of low-weight children. It is also effective in terms of maintenance.

  Note that the length L1 in the width direction of the target display unit 15 may be equal to the length L2 in the width direction of the absorber 4 in the overlapping region A. That is, L1 may be equal to or less than L2, and the outer end 15b in the width direction of the target display unit 15 and the outer end 4b in the width direction of the absorber 4 in the overlapping region A (same outer side) are matched. Also good. Also in this case, since the user can be guided so that the fastening tape 10 is fastened to the center portion in the width direction of the front waistline region 1a, the above-described effect can be obtained.

  Since the planar shape of the absorbent body 4 of the present embodiment is rectangular, the length of the absorbent body 4 in the width direction is constant regardless of the position in the longitudinal direction. However, the present invention is not limited to this, and the length in the width direction of the absorbent body 4 may vary depending on the position in the longitudinal direction. Even in this case, if the length in the width direction of the target display portion 15 is equal to or less than the maximum length in the width direction of the absorber 4 in the overlapping region A, the fastening tape 10 is provided at the center portion in the width direction of the front waistline region 1a. Can be fixed.

  In FIG. 2, the target display unit 15 is printed with a rectangle filled with a color different from the surroundings. However, the target display unit 15 is not limited to this, and can print numbers, characters, lines, illustrations, ellipses, and the like. There may be. In this case, the length in the width direction of the target display unit 15 is the length in the width direction from the contour printed on the one side in the width direction to the contour printed on the other side in the width direction. . Further, the target display unit 15 is not limited to be printed on the back film 3, and the target display unit 15 may be printed on the exterior sheet 5 or the target tape 14. In addition, the target display unit 15 is not limited to be formed by printing, and a portion provided with a material different from the surroundings may be used as the target display unit 15. For example, the target tape 14 may be a member having a different color from the surroundings, and the target tape 14 itself may be the target display unit 15.

  Further, the center position CL in the width direction of the target display unit 15 and the center position CL in the width direction of the absorber 4 may be shifted due to a manufacturing error or the like. In that case, the end 15b on one side in the width direction of the target display unit 15 may be located on the outer side in the width direction than the end 4b on the one side in the width direction of the absorber 4 in the overlapping region A. However, even in that case, by making the length in the width direction of the target display unit 15 equal to or less than the maximum length in the width direction of the absorber 4 in the overlapping region A, the other in the width direction of the target display unit 15 The end 15b on the side is located on the inner side (center side) in the width direction than the end 4b on the other side in the width direction of the absorber 4 in the overlapping region A. In addition, the end 15 b on one side in the width direction of the target display unit 15 does not protrude greatly from the end 4 b on one side in the width direction of the absorber 4. Therefore, the same effect as described above can be obtained.

=== Long leg elastic member 6 ===
In the disposable diaper 1 of this embodiment, a pair of leg-holes elastic members 6 are provided on both outer sides in the width direction than the absorbent body 4. Specifically, the innermost (center side) end 6a in the width direction of the leg-holes stretchable member 6 is located on the outer side in the width direction than the outermost end 4a in the width direction of the absorbent body 4. . That is, since the leg-holes stretchable member 6 is provided on a sheet member (solid gather sheet 21, back film 3, exterior sheet 5) that is less rigid than the absorber 4, the absorber 4 and leg legs that are in close contact with the wearer A space is formed between the elastic members 6, and a shape like a puff sleeve is formed. Therefore, while the absorbent body 4 is kept in close contact with the body, the leg-holes stretchable member 6 follows the movement of the leg by a freely movable sheet member between the absorbent body 4 and the absorbent body 4. Therefore, the wearer can easily move the leg and take a positioning posture (the leg hole opening HL can be easily directed forward). In other words, even if the wearer takes a positioning posture, it is possible to keep the leg stretchable member 6 fitted to the leg while suppressing the swaying of the absorbent body 4, thereby suppressing the excrement leakage. Moreover, since excrement can be stored in the space formed between the absorber 4 and the leg-holes elastic member 6, it can be said that the excrement leakage can be suppressed.

  Furthermore, in the disposable diaper 1 of this embodiment, as shown in FIG. 2, the legs (on one side in the width direction) from the outer end (one side) 41 a in the width direction of the absorber core 41 of the absorber 4. The length L3 in the width direction to the inner side (center side) end 6a in the width direction of the swivel elastic member 6 is longer than the length L4 in the width direction of the leg stretchable member 6. Therefore, the length of the freely movable seat member (such as the three-dimensional gathered sheet 21) located between the leg-stretchable elastic member 6 and the highly rigid absorber core 4a is long, and the wearer positions as described above. It is easy to take a posture, and the leg stretchable member 6 is kept in a state of being fitted to the leg, so that excrement leakage can be suppressed.

  FIG. 7 is a diagram illustrating a state in which a sheet member (such as the three-dimensional gather sheet 21) between the absorbent core 41 and the leg-holes stretchable member 6 is folded. In addition, in the figure, the covering material 42, the back film 3, the exterior sheet 5, etc. of the absorber 4 are omitted for simplification of description. In the disposable diaper 1 of the present embodiment, as described above, the user is guided to fasten the fastening tape 10 to the central portion in the width direction of the front waistline region 1a, as shown in FIG. Starting from the outer end 41a in the width direction of the body 4, in particular, the highly absorbent core 41, the three-dimensional gathered sheet 21 and the like can easily enter the inner side (center side) in the width direction. Therefore, the width direction length L3 from the outer end 41a in the width direction of the absorbent core 41 to the inner end 6a in the width direction of the leg stretchable member 6 is assumed to be the width direction of the leg stretchable member 6. If it is shorter than the length L4, the leg-holes stretchable member 6 is drawn inward (non-skin side) and falls inward. If it does so, the sheet-like leg periphery elastic member 6 cannot contact | abut to a wearer's leg on a surface, the fitting property of the leg periphery opening HL will fall, and it will lead to the leakage of excrement.

  Therefore, like the disposable diaper 1 of the present embodiment, the length L3 in the width direction from the outer end 41a in the width direction of the absorbent core 41 to the inner end 6a in the width direction of the leg stretchable member 6 is It is good to make it the length L4 or more of the width direction of the leg-holes elastic member 6. By doing so, as shown in FIG. 7, the three-dimensional gather sheet 21 or the like is folded into a Z shape, and the region (stretchable region) in which the leg-hole stretchable member 6 is provided is orthogonal to the surface (thickness direction). Surface). Therefore, the leg-holes elastic member 6 can be brought into contact with the wearer's leg on the surface, and the fit of the leg-hole opening HL can be enhanced, so that excrement leakage can be suppressed.

  The planar shape of the absorber core 41 of the present embodiment is an hourglass shape. Therefore, from the outermost end 41 a in the width direction of the absorber core 41 to the innermost end 6 a in the width direction of the leg-holes stretchable member 6 from the most central end in the width direction (outer end 41 a of the constricted portion). The length L3 in the width direction may be not less than the length L4 in the width direction of the leg-holes stretchable member 6. Desirably, as shown in FIG. 2, the length L5 in the width direction from the outermost end 41a in the width direction of the absorbent core 41 to the inner end 6a in the width direction of the leg stretchable member 6 is It is good to make it the length L4 or more of the elastic member 6 in the width direction. By doing so, the leg-holes elastic member 6 can be made to contact | abut to a wearer's leg on a surface more reliably.

  The leg stretchable member 6 is not limited to the stretchable sheet member, and a plurality of thread-like stretchable members arranged in the width direction may be used as the leg stretchable member 6. Also in this case, by doing as described above, the stretchable region provided with the plurality of thread-like stretchable members can be held on the surface, and the plurality of thread-like stretchable members (stretchable regions) are attached to the wearer's legs. Since it can be made to contact | abut, the fitting property of the leg periphery opening HL can be improved.

  Moreover, in the production line of the disposable diaper 1, the disposable diaper 1 which is an unfolded state is folded in the width direction or the longitudinal direction. Therefore, the folding position in the width direction is preferably a position where the leg-holes stretchable member 6 does not exist. By doing so, it is possible to prevent the sheet-like leg-holes stretchable member 6 from being creased and to easily bring the leg-holes stretchable member 6 into contact with the wearer's leg on the surface. Further, by setting the outermost end 4a in the width direction of the absorbent body 4 to the folding position, the three-dimensional gathered sheet 21 and the like are easily folded into a Z shape as shown in FIG.

=== Solid Gather 20 ===
In the disposable diaper 1 of the present embodiment, as shown in FIG. 1, the standing point of the three-dimensional gather 20, that is, the three-dimensional gather sheet 21 is joined to the top sheet 2 (on one side in the width direction) of the second joint portion 24. An end 24a on the inner side (center side) in the width direction is connected to an end 6a on the inner side (center side) in the width direction of the leg-holes stretchable member 6 (one side in the width direction) and (one side in the width direction of the absorber 4) Between the outer edge 4a. That is, the standing point of the three-dimensional gather 20 is provided between the absorbent body 4 that is in close contact with the wearer's body and the leg-hole elastic member 6 that is in close contact with the wearer's leg. By doing so, it is possible to suppress the three-dimensional gather 20 from being crushed, to prevent the excrement from being dammed by the three-dimensional gather 20, and to suppress the leakage of the excrement. In particular, in the case of a low-weight child taking a positioning posture, the disposable diaper 1 and the wearer are likely to be in close contact with each other. Therefore, the standing point of the three-dimensional gather 20 is placed on a freely movable sheet member (such as the three-dimensional gather sheet 21) located between the absorbent body 4 and the leg-stretchable elastic member 6, that is, a part easily separated from the wearer. The provision of the three-dimensional gather 20 in the space between the absorber 4 and the leg-holes stretchable member 6 is effective because it is provided.

  In addition, the edge 6b of the outer side in the width direction of the leg-holes stretchable member 6 is most likely to be in close contact with the wearer's leg. Therefore, if the standing point of the three-dimensional gather 20 is provided at least between the outer end 6b in the width direction of the leg-holes stretchable member 6 (stretchable region) and the outer end 4a in the width direction of the absorber 4. The same effects as described above can be obtained.

  Further, the leg-hole stretchable member 6 that is in close contact with the wearer's leg is easier to move and has lower rigidity than the absorbent body 4 that is in close contact with the wearer's body. Therefore, as shown in FIG. 1, in the disposable diaper 1 of the present embodiment, the rising point of the three-dimensional gather 20 (one side in the width direction) (the inner end 24 a in the width direction of the second joint portion 24) is ( It is provided on the outer end 4a side (one side) in the width direction of the absorbent body 4 rather than the inner end 6a in the width direction of the leg-hole stretchable member 6 (one side in the width direction). That is, the width direction of the absorbent body 4 from the standing point 24a of the three-dimensional gather 20 is larger than the length L7 in the width direction from the standing point 24a of the three-dimensional gather 20 to the inner end 6a in the width direction of the leg stretchable member 6. The length L6 in the width direction to the outer end 4a is shortened. By doing so, the position of the standing point 24a of the three-dimensional gather 20 can be stabilized, and the three-dimensional gather 20 can be raised neatly. Therefore, the excrement leakage can be more reliably suppressed.

  In the present embodiment, the planar shape of the absorber core 41 that greatly affects the rigidity of the absorber 4 is an hourglass shape, but is not limited thereto, and may be a rectangular shape, for example. In that case, the standing point 24 a of the three-dimensional gather 20 can be provided on the outer end 41 a side in the width direction of the absorbent core 41 with respect to the inner end 6 a in the width direction of the leg stretchable member 6. Therefore, the position of the standing point 24a of the three-dimensional gather 20 can be further stabilized, and the three-dimensional gather 20 can be erected cleanly.

=== Fastening tape 10 ===
FIG. 8 is an explanatory diagram of the state where the fastening tapes 10 are fastened together. As shown in FIG. 1, the fastening tape 10 of the present embodiment is provided with a hook sheet 12 on the skin side surface (a surface facing the target tape 14 when folded into the front waistline region 1a) and hooks on the non-skin side surface. A target sheet 13 that can be fixed to the sheet 12 is provided. Therefore, in the disposable diaper 1 of this embodiment, as shown in FIG. 8, when it is folded in one surface (in the front waistline area 1a) in the thickness direction of one fastening tape 10a among a pair of fastening tapes 10. And a surface on the other side in the thickness direction of the other fastening tape 10b (a surface facing inward when folded into the front waistline region 1a) can be fastened. At the time of mounting, first, the hook sheet 12 of one fastening tape 10a is fastened to the center in the width direction of the target tape 14, and then the hook of the other fastening tape 10b is placed on the target sheet 13 of one fastening tape 10a. The sheet 12 is fastened.

  Even if the fastening tapes 10 cannot be fastened to each other, the fastening tape 10 can be stopped at a more central position in the width direction of the front waist region 1a by shifting the fastening position of each fastening tape 10 in the longitudinal direction. I can wear it. However, in that case, there is a risk that excrement may leak due to a gap in one leg opening HL or the absorber 4 being swung. Therefore, as in the present embodiment, the fastening tapes 10 can be fastened to each other, whereby the waistline opening HB and the leghole opening HL can be reduced and the absorber 4 can be prevented from being twisted. Moreover, it can prevent more reliably that the leg of the low weight child who takes the positioning posture contacts the fastening tape 10. Therefore, also when wearing the disposable diaper 1 with respect to a smaller low weight infant, the leakage of excrement can be suppressed.

  In addition, the fastening force (fastening force of the hook sheet 12 and the target sheet 13) of the fastening tapes 10 is set to 0.1 N / 10 mm or more so that the fastening tapes 10 do not come off at the time of wearing. On the other hand, if the fastening force is too strong, it becomes difficult to remove the fastening tape 10 when the disposable diaper 1 is replaced. Therefore, the fastening force between the fastening tapes 10 is preferably 0.5 N / 10 mm or less. Similarly, the fastening force of the hook sheet 12 to the target tape 14 is preferably 0.1 N / 10 mm or more and 0.5 N / 10 mm or less. Moreover, you may provide the target sheet | seat 13 only in one fastening tape 10, In that case, material can be reduced. However, by providing the target sheet 13 on both fastening tapes 10, the user can fasten without being aware of the upper and lower sides of the fastening tape 10.

  In addition, the fastening tape 10 of the present embodiment has a substantially trapezoidal shape, and the length in the longitudinal direction is shorter at the tip in the width direction than at the root. Therefore, as shown in FIG. 8, the upper fastening tape 10 b has a region (shaded portion) that does not overlap with the lower fastening tape 10 a, and the region that does not overlap can be fixed to the target tape 14. In addition, the root portion is more likely to receive a force from the leg of the low-weight child who takes the positioning posture than the distal end portion of the fastening tape 10b. Therefore, the fastening force of the fastening tape 10 to the target tape 14 may be higher than the fastening force between the fastening tapes 10. By doing so, since the root portion (shaded portion) of the upper fastening tape 10b is fastened to the target tape 14 by a strong fastening force, the upper fastening tape 10b can be further prevented from coming off, and excrement leaks. Can be suppressed. On the other hand, the front end portion of the upper fastening tape 10b is fixed to the lower fastening tape 10a with a relatively weak fixing force. Therefore, at the time of replacement of the disposable diaper 1, the user can easily pick the tip of the upper fastening tape 10a and easily remove the fastening tape 10.

  FIG. 9 is an explanatory diagram of a method for measuring the fastening force. The fastening force (N / 10 mm) between the fastening tapes 10 is measured, for example, using an autograph tester AG-X10plus (manufactured by Shimadzu Corporation) as an example of a tensile tester as follows. First, from the fastening tape 10 to be measured, a sample S1 obtained by cutting out a region where the hook sheet 12 is provided into a rectangle is obtained. Similarly, a sample S2 obtained by cutting out a region where the target sheet 13 is provided into a rectangle is obtained from the fastening tape 10. Next, the hook sheet 12 of the sample S1 is overlaid on the target sheet 13 of the sample S2 in a state where the longitudinal direction and the width direction of the disposable diaper 1 of both the samples S1, S2 are aligned. And a 700-g roller is rolled on both sample S1, S2 at the speed | rate of 5 mm / min in the width direction of the disposable diaper 1 (peeling direction of the fastening tape 10), and both sample S1, S2 is fixed. .

  Next, both samples S1 and S2 fixed to each other are set in a tensile tester. Specifically, the sample S2 side is fixed to the inclined surface 50a of the base 50, and the end of the sample S1 is held by the moving member 51. In addition, the width direction of the disposable diaper 1 is made to follow the inclination direction of the inclined surface 50a. Thereafter, the moving member 51 is moved upward with respect to the base 50 at a constant moving speed of 300 mm / min, and both samples S1 and S2 are peeled off. Then, the load value when the angle formed by the moving member 51 pulling the sample S1 (the direction of the peeling force applied to the sample S1) and the inclined surface 50a becomes 135 degrees is acquired.

  Finally, the acquired load value is converted into a load value when the dimension of the sample S1 (hook sheet 12) in the longitudinal direction of the disposable diaper 1 is 10 mm, and the converted value is the above-mentioned fastening force (N / 10 mm). And In addition, the fastening force of the hook sheet 12 with respect to the target tape 14 can be measured similarly.

  As mentioned above, the said embodiment is for making an understanding of this invention easy, and is not for limiting and interpreting this invention. Further, the present invention can be changed or improved without departing from the gist thereof, and needless to say, the present invention includes equivalents thereof.

  For example, the disposable diaper 1 that does not have the three-dimensional gather 20, the disposable diaper 1 in which the standing point 24a of the three-dimensional gather 20 is positioned on the outer side of the absorbent body 4 or the leg stretchable member 6, and the three-dimensional gather 20 From the outer end 41a in the width direction of the absorbent core 41 to the inner end 6a in the width direction of the leg elastic member 6 The disposable diaper 1 in which the length in the width direction is shorter than the length in the width direction of the leg-holes stretchable member 6 or the disposable diaper 1 in which the fastening tape 10 does not have the target sheet 13 may be used.

DESCRIPTION OF SYMBOLS 1 Disposable diaper, 1a Front waist area, 1b Crotch area, 1c Rear waist area, 2 Top sheet, 3 Back film, 4 Absorber, 41 Absorber core, 42 Coating material, 5 Exterior sheet, 6 Stretchable member around leg ( Stretchable area), 10 Fastening tape (fastening member), 11 Base material, 12 Hook sheet, 13 Target sheet, 14 Target tape, 15 Target display part, 20 Solid gather, 21 Solid gather sheet, 22 Stretch for solid gather Member, 23 1st joint part, 24 2nd joint part, 24a Standing point of three-dimensional gather, 30 back, 31 legs, 50 base, 50a inclined surface, 51 moving member, HB waistline opening, HL leg-hole opening, A overlap region

Claims (4)

A deployable disposable diaper for a child having a longitudinal direction, a width direction, and a thickness direction orthogonal to each other, including a front waistline region, a crotch region, and a rear waistline region and having a weight of 3000 g or less,
An absorber,
A pair of fastening members extending from the rear waistline region toward the outside in the width direction;
A leg-hole stretchable member provided along a pair of leg-hole openings formed by the pair of fastening members being fastened to the front waistline region and provided on the outer side in the width direction than the absorber. When,
A target display unit indicating a position where the pair of fastening members should be fastened to the front waistline region;
Have
The absorber includes an overlapping region overlapping with the target display unit in the thickness direction in the longitudinal direction,
The length in the width direction of the target display unit is equal to or less than the maximum length in the width direction of the absorber in the overlapping region ,
A pair of three-dimensional gathers standing on the wearer side are provided along the longitudinal direction on both sides in the width direction,
In the width direction,
The standing point of the three-dimensional gather is located inside the outer end in the width direction of the stretchable region where the leg-holes stretchable member is provided, and outside the outer end in the width direction of the absorber. A disposable diaper characterized by The disposable diaper according to claim 1 ,
The disposable diaper characterized in that the standing point of the three-dimensional gather is located on the outer end side in the width direction of the absorbent body, rather than the inner end in the width direction of the stretchable region. The disposable diaper according to claim 1 or 2 ,
The absorber has an absorber core and a covering material for the absorber core,
The length in the width direction from the outer end in the width direction of the absorbent core to the inner end in the width direction of the stretchable region in which the leg stretchable member is provided is the length of the stretchable region. The disposable diaper characterized by being not less than the length in the width direction. The disposable diaper according to any one of claims 1 to 3 ,
The surface on one side in the thickness direction of one fastening member of the pair of fastening members and the surface on the other side in the thickness direction of the other fastening member are 0.1 N / 10 mm or more. A disposable diaper characterized in that it can be fastened with a fastening force of.

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