JP2014014412A - Disposable pant-type diaper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique capable of easily adjusting a position of an absorbent body according to a body type of each wearer even with the diaper on.SOLUTION: The disposable pant-type diaper comprises an outer body 10 and an absorbent body 20. The absorbent body 20 includes: an absorber 21 for absorbing and retaining liquid; a top sheet for covering the absorber from a surface side; a back sheet for covering the absorber from the back side; a front end portion 30 extending longitudinally outward the absorber in a front piece 1; a front locking part 31 provided at the back side of the front end portion; a back end portion 40 extending longitudinally outward the absorber in a back piece 2; and a back locking part 41 provided at the back side of the back end portion 40. At least both or either one of the front end portion and the back end portion has an extension area 32 extending longitudinally farther with respect to the end edge of the outer body forming a waist opening part 4.

Description

  The present invention relates to a disposable diaper that is attached to a wearer's crotch and absorbs and holds a liquid such as urine. More specifically, the present invention relates to a pant-type disposable diaper in which a pant-type exterior body and an absorbent main body that absorbs and holds urine and the like are separately formed, and the attachment position of the absorbent body to the exterior body can be freely adjusted. It is about.

  Conventionally, for example, a pants-type diaper is known as a disposable diaper worn by an infant or an elderly person. In a pants-type disposable diaper, both ends of the front and back bodies are pre-joined, and the wearer inserts both legs through the opening around the torso, and inserts each leg through the openings around both legs. It can be installed by putting it out.

  Moreover, as described in, for example, Patent Document 1, as a form of disposable diaper, a pants-type exterior body and a removably attached inner side of the exterior body are arranged in the longitudinal direction of the front and rear side areas centering on the crotch area. What consists of an extending bodily fluid absorbent pad is known. In the disposable diaper disclosed in Patent Document 1, the pants-type exterior body has a flexible hanging piece that hangs down from the waistline edge toward the crotch area inside the circumferential central part in each of the front and rear side areas. doing. The body fluid absorbent pad is composed of upper and lower sheets and an absorbent panel interposed between the sheets. The front and rear ends of the absorbent panel are fixed to the suspension pieces of the exterior body. It has become. Thus, the disposable diaper of patent document 1 can attach a bodily fluid absorptive pad removably through a suspension piece inside a pants-type exterior body.

  As the disposable diaper described in Patent Document 1 above, the body fluid absorbent pad is detachable. For example, after urination, only the body fluid absorbent pad is replaced and the pants-type exterior body continues to be used. It has the advantage of being economical. Moreover, since the diaper of patent document 1 can adjust the position of the bodily fluid absorption pad attached to an exterior body, there also exists an advantage that the fitting property of a bodily fluid absorption pad can be improved according to a wearer's individual body shape. .

JP-A-9-75390

  However, the diaper described in Patent Document 1 is used by attaching an absorbent main body to the inside of a pant-type exterior body. For this reason, when trying to adjust the mounting position of the absorbent main body according to the wearer's individual body shape, it was necessary to wear it after determining the mounting position of the absorbent main body. Therefore, if the wearer feels uncomfortable after installing the diaper, the wearer needs to remove the diaper, readjust the body fluid absorption pad, and put on the diaper again.

  In addition, even with conventional disposable diapers, there is a gap between the body and the absorbent body when the wearer moves the body even if the position of the absorbent body can be adjusted to the urination opening when worn. There is. In such a case, in the conventional diaper structure, in order to press the absorbent main body against the urination port again, it is necessary to put the hand between the outer body and pull up the absorbent main body or to put on the outer body again. There is.

  As described above, the conventional diaper cannot adjust the position of the absorbent main body with the diaper attached, and the position adjustment work of the body fluid absorbent pad is very troublesome. Therefore, at present, there is a need for a pants-type disposable diaper that can easily adjust the position of the absorbent main body in accordance with the wearer's individual body shape even when worn.

Accordingly, the inventors of the present invention have intensively studied the means for solving the problems of the above-described conventional invention, and as a result, one end or both ends of the absorbent main body attached to the inside of the pant-type exterior body are opened to the waist of the exterior body. Even if the diaper is still worn, the body shape of the individual wearer should be long enough to extend from the body and be able to adjust the position of the absorbent body by gripping the extended part of the absorbent body. In line with the above, we obtained the knowledge that the mounting position of the absorbent main body can be easily adjusted. The inventor has conceived that the problems of the prior art can be solved based on the above knowledge, and has completed the present invention.
More specifically, the present invention has the following configuration.

The present invention relates to a pants-type disposable diaper.
The disposable diaper of the present invention basically includes an exterior body 10 and an absorbent main body 20.
The exterior body 10 is a pants-type member in which a crotch portion 3 is interposed between a front body 1 and a back body 2 to form a waist opening 4 and a pair of left and right leg openings 5.
The absorbent main body 20 is a member that extends in the longitudinal direction from the front body 1 to the back body 2 with respect to the exterior body 10 and is disposed at a position including the crotch 3.
This absorbent body 20 is
An absorber 21 for absorbing and holding liquid;
A top sheet 22 for covering the absorber 21 from the surface side;
A back sheet 23 for covering the absorber 21 from the back side;
On the front body 1 side, a front end 30 extending outward in the longitudinal direction from the absorber 21,
A front side fastening part 31 provided on the back side of the front side end part 30 and fastened to the exterior body 10;
On the rear body 2 side, a rear side end 40 extending outward in the longitudinal direction from the absorber 21,
A rear fastening portion 41 provided on the back side of the rear end portion 40 and capable of fastening to the exterior body 10.
Here, “can be fastened” means both the case where it is fastened so that it can be removed and the case where it is fastened so that it cannot be removed.
And in the absorptive main body 20, the front side edge part 30 and / or the rear side edge part 40 form the trunk periphery opening 4 in a state where the absorber 21 is arranged in alignment with the center of the exterior body 10. It has the extension area | regions 32 and 42 extended from the edge of the exterior body 10 to perform.

As described above, in the diaper of the present invention, when the absorbent main body 20 is arranged inside the exterior body 10, both ends or one end of the absorbent main body 20 extend from the waist opening 4 of the exterior body 10. It is supposed to be. As described above, since a part of the absorbent main body 20 extends from the waist opening 4, a person wearing a diaper or a person who wears a diaper (such as a wearer) The position of the absorbent main body 20 can be adjusted so that there is no gap between the wearer's urination port and the absorbent main body 20 by grasping the extended portion. Therefore, even if the diaper of the present invention is worn, the position of the absorbent main body 20 can be easily adjusted according to the body shape of the wearer.
Moreover, since the fastening parts 31 and 41 are provided in the back surface side of the extension part (extension area | regions 32 and 42) of the absorptive main body 20, this extension part is turned up and the exterior body 10 is folded. Can be kept outside. For this reason, even when the wearer of the diaper exercises, the situation in which the position of the absorbent main body 20 is displaced can be suppressed, and the extended portion of the absorbent main body 20 does not get in the way.

In the diaper of the present invention, the exterior body 10 preferably has one or a plurality of waist elastic members 11 fixed in the stretched state along the short direction in the vicinity of the waist opening 4.
Further, when the distance from the edge that forms the waistline opening 4 to the waist elastic member 11 provided at the position closest to the crotch 3 is W, the extension region of the absorbent main body 20 It is preferable that the length E that 32 and 42 extend from the edge of the exterior body 10 is longer than this distance W.

First, as described above, by providing one or a plurality of waist elastic members 11 along the trunk periphery opening 4 of the outer body 10, the waist elastic members 11 are disposed inside the outer body 10 by the contraction force of the waist elastic members 11. The position of the absorbent main body 20 is fixed. For this reason, the adhesiveness between the absorbent main body 20 and the wearer's body is enhanced, and the attachment position of the absorbent main body 20 is less likely to shift even when the wearer moves.
In addition, as described above, the extension regions 32 and 42 of the absorbent main body 20 are sufficiently large so as to be able to cross over the waist elastic member 11 provided in the vicinity of the waist opening 4 of the exterior body 10. Having the length makes it easy to grip the extended regions 32 and 42.
Furthermore, since the extension regions 32 and 42 of the absorbent main body 20 extend to a position beyond the waist elastic member 11, the extension regions 32 and 42 of the absorbent main body 20 are affected by the expansion and contraction of the waist elastic member 11. Without being received, it can be firmly fixed to the outside of the exterior body 10. That is, if the extension lengths 32 and 42 of the absorbent main body 20 are short, it is necessary to fix the extension regions 32 and 42 to the exterior body 10 so as to overlap the waist elastic member 11. There is a problem that the extension regions 32 and 42 are peeled off from the exterior body 10 due to the expansion and contraction of the waist elastic member 11. In this regard, such problems can be solved by extending the extending regions 32 and 42 of the absorbent main body 20 to a position exceeding the waist elastic member 11.

In the diaper of the present invention, the exterior body 10 has one or more Tammy elastic members 12 fixed in an extended state along the short direction at a position closer to the crotch 3 than the one or more waist elastic members 11. , And preferably.
Further, the tammy expansion / contraction member 12 has a discontinuous region 12a that is discontinuous at the center of the outer body 10 in the short direction.
In this case, the length D in the short direction of the exterior body 10 of the discontinuous region 12a is longer than the length B in the short direction of the absorbent main body 20 of the front side fastening part 31 and the rear side fastening part 41. It is preferable.

As in the above configuration, by providing one or a plurality of Tammy stretchable members 12 around the abdomen of the exterior body 10, the absorbent main body 20 disposed inside the exterior body 10 and the wearer's body can be adhered to each other. Further improvement can be achieved.
Further, in a preferred embodiment of the present invention, the tammy expansion / contraction member 12 has a discontinuous region 12a, and the length D of the discontinuous region 12a in the short direction is the length of the fastening portions 31 and 41 in the short direction. It is formed longer than B. For this reason, the tammy elastic member 12 can be fixed to the discontinuous region 12a by the fastening portions 31 and 41 provided in the extending regions 32 and 42 of the absorbent main body 20. Thereby, the extension regions 32 and 42 of the absorptive main body 20 can be firmly fixed to the outside of the exterior body 10 without being affected by the expansion and contraction of the tammy expansion / contraction member 12.

  In the diaper of the present invention, the front fastening portion 31 provided on the back surface side of the extension region 32 of the front end portion 30 is fastened to the skin non-contact surface side of the exterior body 10, and the rear end The rear fastening portion 41 provided on the back side of the tip portion of the portion 40 may be fastened to the skin contact surface side of the exterior body 10.

  In short, in the above-described configuration, the end part on the front body side of the absorbent main body 20 extends from the trunk periphery opening 4 of the exterior body 10 and is fastened to the skin non-contact surface side of the exterior body 10. The end part on the rear body side of 20 does not extend from the waist opening 4 of the exterior body 10 and is fastened to the skin contact surface side of the exterior body 10. At this time, the front side fastening part 31 of the absorbent main body 20 may have removable adhesiveness, and the rear side fastening part 41 may have non-peelable adhesiveness. Thus, the person who wears a diaper by extending only the end part on the front body side of the absorbent main body 20 from the waist opening 4 of the exterior body 10 allows the extended part from the abdomen side of the wearer. The operation of gripping and adjusting the position of the absorbent main body 20 can be easily performed.

  In the diaper of the present invention, the front end portion 30 and / or the rear end portion 40 are located between the extension regions 32 and 42 and the absorber 21 and the extension regions 32 and 42 in the longitudinal direction. The adjustment margin regions 33 and 43 may be included, and the extension regions 32 and 42 may be formed wider than the regulation margin regions 33 and 43.

  As described above, since the extended regions 32 and 42 of the absorbent main body 20 are wide, the extended regions 32 and 42 can be easily gripped. Thereby, position adjustment of the absorptive main body 20 becomes still easier. Further, the extension regions 32 and 42 are wider than the adjustment margin regions 33 and 43 so that the extension regions 32 and 42 are formed at the boundary between the extension regions 32 and 42 and the adjustment margin regions 33 and 43. It becomes easy to bend. For this reason, the handling of the extension part of the absorptive main body 20 becomes easy.

  In the diaper of the present invention, the front fastening part 31 provided in the extension regions 32 and 42 is provided on both the front body 1 side and the back body side 2 of the exterior body 10 or on the skin non-contact surface side. And the target member 7 engaged with both or any one of the rear side fastening part 41 is good also as being provided.

  As described above, by providing a dedicated member (target member 7) that engages with the front side fastening part 31 and the rear side fastening part 41 on the skin non-contact surface side of the exterior body 10, the front side fastening is achieved. The part 31 and the rear fastening part 41 are difficult to peel off from the outer surface of the exterior body 10.

  The present invention is provided in the form in which the exterior body 10 has one or a plurality of Tammy stretchable members 12 as described above, and is provided at a position closest to the crotch 3 among the Tammy stretchable members 12 from the edge forming the waist opening 4. When the distance to the object is T, the length E of the extended regions 32 and 42 extending from the edge of the exterior body 10 may be longer than the distance T.

As described above, the extension regions 32 and 42 of the absorbent main body 20 have a sufficient length so as to be able to cross over the waist elastic member 11 and the tammy elastic member 12 provided in the exterior body 10. Thus, the extension regions 32 and 42 can be easily fixed to the skin non-contact surface side of the exterior body 10.
Furthermore, by extending the extension regions 32 and 42 of the absorbent main body 20, for example, as described above, the Tammy stretchable member 12 need not be discontinuous at the center in the width direction. For this reason, the adhesiveness of the exterior body 10 and a wearer's body will increase, As a result, the position shift of the absorptive main body 20 located between the exterior body 10 and a wearer's body can be prevented effectively.

  In the diaper of the present invention, a plurality of the absorbent main bodies 20 may be arranged so as to overlap with the exterior body 10. In this case, it is preferable that at least one of the plurality of absorbent main bodies 20 is detachable from the exterior body 10.

  By arranging a plurality of absorbent main bodies 20 so as to overlap the exterior body 10 as in the above configuration, after urination, the absorbent main body 20 located closest to the wearer's body can be removed. , Urination can be handled easily.

  In the diaper of the present invention, when the absorbent main body 20 is disposed inside the exterior body 10, both ends or one end of the absorbent body 20 extend from the trunk periphery opening 4 of the exterior body 10. . As described above, a part of the absorbent main body 20 extends from the waist opening 4 so that the person wearing the diaper or the person wearing the diaper is the part of the absorbent main body 20 extending. The position of the absorbent main body 20 can be adjusted so that there is no gap between the wearer's urination port and the absorbent main body 20. Therefore, even if the diaper of the present invention is still worn, the position of the absorbent main body can be easily adjusted according to the body shape of each wearer.

  In the diaper of the present invention, since the fastening portions 31 and 41 are provided on the back side of the extended portion (the extended regions 32 and 42) of the absorbent main body 20, the extended portion is folded back. , It can be fastened to the outside of the exterior body 10. Therefore, even when the wearer of the diaper exercises, the position of the absorbent main body 20 can be prevented from shifting, and the extended portion of the absorbent main body 20 does not get in the way.

Drawing 1 is a perspective view showing the state where the disposable diaper concerning a 1st embodiment was seen from the front body side. FIG. 2 is a development view of the disposable diaper according to the first embodiment, in which an exterior body and an absorbent main body are drawn side by side. FIG. 3 is a cross-sectional view showing a state where the absorbent article is cut along the YY line shown in FIG. 2. FIG. 4 is a cross-sectional view showing a state where the absorbent article is cut along the line XX shown in FIG. FIG. 5 is a side cross-sectional view of the disposable diaper according to the first embodiment, and schematically shows a usage state of the disposable diaper. FIG. 6 is a development view of the disposable diaper according to the second embodiment, in which an exterior body and an absorbent main body are drawn side by side. FIG. 7: is a perspective view which shows the state which looked at the disposable diaper which concerns on 3rd Embodiment from the front body side. FIG. 8: is a perspective view which shows the state which looked at the disposable diaper which concerns on 4th Embodiment from the front body side. FIG. 9 is a development view of the disposable diaper according to the fourth embodiment, in which an exterior body and an absorbent main body are drawn side by side. FIG. 10 is a development view of the disposable diaper according to the fifth embodiment, in which an exterior body and an absorbent main body are drawn side by side. FIG. 11 is a side sectional view showing a disposable diaper according to the sixth embodiment.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments described below, but includes those appropriately modified by those skilled in the art from the following embodiments.
In the present specification, “longitudinal direction” means a direction connecting the front body side and the back body side (for example, the vertical direction in FIG. 2), and “short direction” is a direction orthogonal to the longitudinal direction. (For example, the left-right direction in FIG. 2).
In the present specification, “A to B” means “A or more and B or less”.

(1. First embodiment)

First, the outline | summary of the underpants type disposable diaper 100 which concerns on the 1st Embodiment of this invention is demonstrated.
FIG. 1 is a perspective view showing an appearance of a pants-type disposable diaper 100 according to the first embodiment of the present invention. As shown in FIG. 1, the disposable diaper 100 includes an exterior body 10 formed in a pants shape, and an absorbent main body 20 disposed on the skin contact surface side (inside) of the exterior body 10.

  The exterior body 10 is divided into a front body 1 in contact with the wearer's abdomen, a back body 2 in contact with the back of the wearer, and a crotch 3 in contact with the inseam of the wearer. In the present embodiment, the exterior body 10 is integrally formed from the front body 1 to the back body 2. A pair of side seal portions 6 are provided at both ends in the width direction of the front body 1 and the back body 2 of the exterior body 10. The exterior body 10 is formed in a pants shape as shown in FIG. 1 by joining the side seal part 6 on the front body 1 side and the side seal part 6 on the back body 2 side in correspondence with each other. In the exterior body 10, the waistline opening 4 is formed by the longitudinal edge 1 a of the front body 1 and the longitudinal edge 2 a of the back body 2 by joining the side seal portions 6. In addition, the outer body 10 is formed with a pair of left and right leg openings 5 provided on both sides of the crotch 3 in the width direction so as to follow the legs of the wearer.

  An absorbent main body 20 extending in the longitudinal direction from the front body 1 of the exterior body 10 through the crotch 3 to the back body 2 is disposed inside the exterior body 10 formed in a pants shape. The absorptive main body 20 includes an absorber 21 that absorbs and holds a liquid such as urine. The absorbent main body 20 is held around the crotch of the wearer by the exterior body 10 and is interposed between the exterior body 10 and the wearer's body. It is preferable that only the both ends of the absorptive main body 20 are fixed to the exterior body 10 and the adhesive body 20 is in a non-adhesive state at the central portion in the longitudinal direction. In the present invention, at least one of the end part on the front body 1 side or the end part on the back body side 2 of the absorbent main body 20 extends from the waist opening 4 of the exterior body 10. In the present embodiment, the absorbent main body 20 has an end portion of the front body 1 (a front extension region 32 of the front end portion 30) extending from the waist opening 4 of the exterior body 10, and an end portion on the rear body side ( The rear end portion 40) is configured not to extend from the trunk periphery opening 4 of the exterior body 10. That is, the absorbent main body 20 has a front fastening portion 31 provided on the back surface of the end portion on the front body 1 side, which is detachably secured to the skin non-contact surface side of the exterior body 10. A rear-side fastening portion 41 provided on the back surface of the two-side portion is fastened to the skin contact surface side of the exterior body 10.

  A wearer arrange | positions the absorptive main body 20 inside the exterior body 10 formed in the underpants type, and the abdomen is in contact with the front body 1 and the back is in contact with the back body 2 in a state where both are stacked. The disposable diaper 100 can be worn by inserting both leg portions into the waist opening 4 and taking out each leg from the left and right leg openings 5. After wearing the diaper, the wearer grasps the end of the absorbent main body 20 (the front extension region 32 of the front end 30) extending from the waist opening 4 on the front body 1 side of the exterior body 10. By performing the operation of pulling up the extension part, the absorbent main body 20 can be brought into close contact with the urination port, for example, according to the shape of the body.

  FIG. 2 shows a state in which the disposable diaper 100 according to the first embodiment shown in FIG. 1 is developed and the exterior body 10 and the absorbent main body 20 are juxtaposed. In FIG. 2, the center position of the exterior body 10 and the center of the absorbent body 21 included in the absorbent main body 20 are drawn side by side so that they are aligned in the left-right direction of the figure. That is, the straight line L1 extending in the left-right direction shown in FIG. 2 is a straight line that passes through both the center position in the longitudinal direction of the exterior body 10 and the center position in the longitudinal direction of the absorber 21. Hereinafter, the structure of each part of the disposable diaper 100 which concerns on 1st Embodiment is demonstrated.

(1-1. Exterior body)
The exterior body 10 is a member for holding the absorbent main body 20 while being addressed to the wearer's body when the disposable diaper 100 is worn. A pair of side seal portions 6 are located at the left and right side edges of the front body 1 and the back body 2 of the exterior body 10. The front body 1 and the back body 2 are joined together at a pair of side seal portions 6 in a state where the right and left side edges in the width direction of the diaper are overlapped with each other to form a pants shape. The side seal portion 6 extends in the length direction of the diaper and is linearly formed. The front body 1 and the back body 2 are joined to the side seal portion 6 by a known joint such as hot emboss welding or ultrasonic emboss welding. Joined by means.

  The exterior body 10 can be configured by a known method by overlapping a plurality of sheet-like members at appropriate positions. For example, the exterior body 10 can be configured by overlapping and bonding the inner sheet 14 and the outer sheet 15. The inner sheet 14 is disposed on the surface side (skin contact surface side) that contacts the wearer's skin, and the outer sheet 15 is disposed on the surface side (skin non-contact surface side) that does not contact the wearer's skin. . The inner sheet 14 and the outer sheet 15 may be separately formed sheet members, or by folding one sheet member at a position corresponding to the edges 1a and 2a of the waist circumference opening 4 of the disposable diaper. It may be integrally formed. Further, another sheet member may be interposed between the inner sheet 14 and the outer sheet 15. The inner sheet 14 and the outer sheet 15 can be formed of, for example, a flexible fiber nonwoven fabric, a plastic sheet, or a laminate sheet thereof. The inner sheet 14 and the outer sheet 15 are bonded by, for example, a known hot melt adhesive. Furthermore, various elastic elastic members can be fixed between the inner sheet 14 and the outer sheet 15 in an extended state along the width direction of the diaper.

  In the exterior body 10, the elastic elastic members 11, 12, and 13 disposed between the inner sheet 14 and the outer sheet 15 are members for forming a gather around the waist and the abdomen. The gather is formed by causing wrinkles in the sheet member when the plurality of elastic elastic members 11, 12, 13 sandwiched between the inner sheet 14 and the outer sheet 15 in a stretched state contract. . By forming the gathers, the flexibility and adhesion of the exterior body 10 can be increased.

  As shown in the development view of FIG. 2, the exterior body 10 includes a plurality of waists extending in the width direction in the vicinity of the edge 1 a of the front body 1 and the edge 2 a of the back body 2 that form the waist opening 4. The elastic member 11 is fixed in an extended state. “Near edge” means, for example, an area of about 1 mm to 50 mm from the edge. The waist elastic member 11 is interposed between the inner sheet 14 and the outer sheet 15, and contracts to cause wrinkles in these sheet members, forming a waist gather in a portion corresponding to the wearer's torso. To do. The number of the waist elastic materials 11 attached to the exterior body 10 may be one, but is preferably two or more. The plurality of waist elastic members 11 are arranged substantially in parallel with a predetermined interval in the longitudinal direction of the diaper. The waist elastic member 11 is preferably 2 to 15, 4 to 12, or 6 to 9, for example.

  Further, as shown in FIG. 2, in the front body 1 and the back body 2, a plurality of tammy expansion members 12 extending in the width direction are fixed in an extended state at a position closer to the crotch 3 than the waist expansion member 11. ing. The tammy expansion / contraction member 12 is interposed between the inner sheet 14 and the outer sheet 15, and contracts to cause wrinkles in these sheet members, thereby forming a tammy gather in a portion corresponding to the wearer's stomach. To do. The number of Tammy elastic members 12 attached to the exterior body 10 may be one, but is preferably two or more. The plurality of Tammy elastic members 12 are arranged substantially in parallel with a predetermined interval in the longitudinal direction of the diaper.

  As shown in FIG. 2, it is preferable that the plurality of Tammy stretchable members 12 have a discontinuous region (discontinuous region 12 a) in the central portion in the width direction of the exterior body 10. For example, in the manufacturing process of the diaper, the plurality of tammy elastic members 12 are arranged to extend over substantially the entire width direction of the exterior body 10, and in the middle of the manufacturing process of the diaper, It is preferable to be discontinuous by cutting. As described above, in the present embodiment, the plurality of Tammy stretchable members 12 are intermittently cut in the discontinuous region 12a and are disposed only on the left and right sides in the width direction of the discontinuous region 12a.

  The plurality of waist elastic members 11 and the plurality of tammy elastic members 12 may be distinguished by making the thicknesses different. For example, the elastic waist member 11 can be made of thread elastic rubber that is thicker than the tammy stretch member 12. For example, the thickness of the waist elastic member 11 may be 300 denier to 1500 denier, and the thickness of the tammy elastic member 12 may be 150 denier to 700 denier.

  Further, as shown in FIG. 2, the exterior body 10 may have leg elastic members 13 arranged along the leg periphery openings on the front body 1 side and the back body 2 side. The leg elastic member 13 is curved along the edge forming the leg periphery opening over the entire width direction of the exterior body 10, and is fixed in an extended state. The leg elastic member 13 contracts to form a leg gather in the exterior body 10.

  Known elastic elastic members can be used for the various elastic elastic members 11, 12, and 13 described above. For example, thread elastic rubber or flat elastic rubber can be applied to the elastic elastic members 11, 12, 13. As such a rubber member, materials such as styrene rubber, olefin rubber, urethane rubber, ester rubber, polyurethane, polyethylene, polystyrene, styrene butadiene, silicone, or polyester can be used. In addition, for each elastic member, a known member having elasticity such as a thermoplastic elastomer, a plastic sheet, or a rubber sheet can be used. Moreover, what is necessary is just to let the elongation rate at the time of fixing the elastic elastic members 11, 12, 13 to the exterior body 10 be 120%-400%, 180%-350%, or 240%-290%, for example. As the flat elastic rubber, it is preferable to use one having a width of, for example, 0.5 to 5.0 mm or 0.8 to 3.0 mm. Further, it is preferable to use a flat elastic rubber having a thickness of, for example, 0.1 to 1.0 mm or 0.2 to 0.5 mm.

(1-2. Absorbent body)
The absorptive main body 20 is used by being placed inside the outer body 10 formed in a pants shape. When the diaper is worn, the absorbent main body 20 is located in the crotch of the wearer and absorbs and holds liquid such as urine excreted by the wearer. It is a member for doing. In this embodiment, the absorptive main body 20 is formed in the substantially rectangular shape extended in a longitudinal direction.

3 is a cross-sectional view showing a state in which the absorbent main body 20 is cut along the longitudinal direction along the line YY shown in FIG.
As shown in FIG. 3, the absorbent main body 20 basically includes an absorbent body 21 that absorbs and holds liquid, a liquid-permeable top sheet 22 that covers the absorbent body 21 from the surface side, and an absorbent body 21. Including a liquid-impermeable back sheet 23 that covers the surface from the back side. The absorber 21 is a member that is disposed at a position including the crotch 3 of the exterior body 10 and extends in the longitudinal direction. The top sheet 22 allows liquid such as urine to permeate the absorber 21. The back sheet 23 is coated from the back side so that the liquid held in the absorber 21 does not leak.

  As shown in FIGS. 2 and 3, the absorbent main body 20 includes a front end 30 extending outward in the longitudinal direction from the absorbent body 21 on the front body 1 side of the exterior body 10, and the exterior body 10. The rear body 2 has a rear end 40 extending outward in the longitudinal direction from the absorber 21 on the rear body 2 side. In the present embodiment, the front end 30 and the rear end 40 are formed by extending the top sheet 22 and the back sheet 23 covering the absorber 21 outward in the longitudinal direction.

Moreover, in FIG. 2, the center position of the exterior body 10 and the center position of the absorber 21 included in the absorbent main body 20 are arranged so as to be aligned on the straight line L1. As shown in FIG. 2, the front end 30 of the absorbent main body 20 extends from the edge 1 a of the front body 1 of the exterior body 10 in a state where the center positions of the exterior body 10 and the absorber 21 are aligned. It is divided into a front extension region 32 that extends and a front adjustment margin region 33 that does not extend from the edge 1a of the front body 1 of the exterior body 10. That is, the front side end portion 30 has a straight line L2 extending in the left-right direction in the drawing along the edge 1a of the front body 1 of the exterior body 10 as a boundary line, and a region outward in the longitudinal direction from the straight line L2 is a front side extension region. 32, a region closer to the absorber 21 than the straight line L2 is defined as a front adjustment margin region 33.
On the other hand, in 1st Embodiment, the back side edge part 40 of the absorptive main body 20 does not have the area | region extended from the edge 2a of the back body 2 of the exterior body 10. FIG. That is, the rear end portion 40 of the absorbent main body 20 has a region extending outward in the longitudinal direction from the straight line L3 extending in the left-right direction in the drawing along the edge 2a of the back body 2 of the exterior body 10. Absent.

  Further, as shown in FIG. 3, a front side fastening portion 31 and a rear side fastening portion 41 are provided on the back side of the front end portion 30 and the rear end portion 40 of the absorbent main body 20, respectively. In the first embodiment, the front fastening portion 31 is provided in the front extension region 32 of the front end 30. In particular, the front side fastening portion 31 and the rear side fastening portion 41 are preferably provided at the front end portion and the rear end portion of the absorbent main body 20. The front side fastening part 31 and the rear side fastening part 41 may be detachably fastened to the exterior body 10 or may be fastened so as not to be peeled off. However, it is preferable that the front fastening portion 31 is detachably fastened to the exterior body 10 so that the wearer can repeatedly adjust the position of the absorbent main body 20 when the diaper is worn. In this case, it is preferable that the rear fastening portion 41 be detachably fastened to the exterior body 10 because the absorbent main body 20 itself can be detached from the exterior body 10. The front side fastening part 31 and the rear side fastening part 41 may be formed of, for example, an adhesive or an adhesive tape, and are mechanically coupled to a sheet member such as a nonwoven fabric forming the exterior body 10. It may be a planar fastener. The surface fastener is formed of a hook material having a large number of protrusions (such as hooks and mushrooms) formed on the surface, and the hook material can be engaged with the constituent fibers of the nonwoven fabric.

Then, the preferable dimension of each element of the absorptive main body 20 is demonstrated. However, the dimension demonstrated below is an example to the last, and the disposable diaper of this invention is not limited to this.
First, since the absorbent body 21 included in the absorbent main body 20 needs to be capable of sufficiently absorbing liquid such as urine, the length of the absorbent body 21 in the longitudinal direction is the length of the exterior body 10 in the longitudinal direction. When the length is 100%, it is preferable to be about 50% to 90%, or about 60% to 80%. Further, the length (width) in the short direction of the absorbent main body 20 is about 70% to 95%, or about 80% to 90% with respect to the minimum length (width) in the short direction of the exterior body 10. It is preferable to do.

  The front end 30 of the absorbent main body 20 includes a front extension region 32 extending from the edge 1 a of the front body 1 of the exterior body 10. When the absorbent main body 20 is disposed on the exterior body 10, the front side extension region 32 is configured so that the front fastening portion 31 provided at the front end portion of the front side extension region 32 is the end 1 a around the trunk of the exterior body 10. It is preferable to have an extension length that can extend over the plurality of waist elastic members 11 disposed in the vicinity. That is, in FIG. 2, the symbol E indicates the length in the longitudinal direction of the front extension region 32 in the absorbent main body 20. Further, the symbol W indicates the distance from the edge 1a on the front body 1 side of the exterior body 10 to the waist elastic member 11 disposed at the position closest to the crotch 3 among the plurality of waist members 11. . The extension length E of the front extension region 32 is preferably longer than the distance W from the end edge 1a to the waist elastic member 11 closest to the crotch 3 (E> W). For example, the extension length E may be 110% to 700%, 200 to 600%, or 300% to 500% with respect to the distance W. As described above, the front extension region 32 has a length that can extend over the plurality of waist elastic members 11, so that the front-side fastening portion provided at the front end portion of the front extension region 32 is provided. 31 can be firmly fixed to the outer sheet 15 of the exterior body 10 without being affected by wrinkles caused by the shrinkage of the waist elastic member 11.

  Further, in the first embodiment, the front extension region 32 of the absorbent main body 20 has a front-side fastening provided at the front end portion of the front extension region 32 when the absorbent main body 20 is disposed on the exterior body 10. The extension length is such that the portion 31 can be fixed to the discontinuous regions 12 a of the plurality of Tammy elastic members 12 arranged around the stomach of the exterior body 10. That is, in FIG. 2, the symbol T is from the edge 1 a on the front body 1 side of the exterior body 10 to the Tammy stretchable member 12 disposed at the position closest to the crotch 3 among the plurality of Tammy stretchable members 12. Shows the distance. The extension length E of the front extension region 32 is preferably shorter than the distance T from the edge 1a to the tammy expansion / contraction member 12 closest to the crotch 3 (E <T). For example, the extension length E may be 50% to 90% or 70% to 80% with respect to the distance T. That is, in the present embodiment, the extension length E is longer than the distance W and shorter than the distance T (W <E <T). By setting the extension length E of the front extension region 32 so as to satisfy such a condition, as shown in FIG. 1, the front fastening portion 31 provided in the front extension region 32 is It becomes possible to stop at the discontinuous region 12a of the Tammy stretchable member 12 provided in the exterior body 10. In this way, by allowing the front side fastening portion 31 to be fastened to the discontinuous region 12a of the Tammy stretchable member 12, the extension length of the front side extension region 32 is an appropriate length without excess or deficiency. In addition, the front-side fastening portion 31 can be securely fastened to the exterior body 10 without being affected by wrinkles caused by the shrinkage of the Tammy stretchable member 12.

  In addition, in order to firmly fix the front fastening portion 31 of the absorbent main body 20 to the discontinuous regions 12a of the plurality of Tammy stretchable members 12, the length of the front fastening portion 31 in the short direction of the diaper, The relationship between the lengths of the continuous regions 12a is also important. Here, in FIG. 2, the code | symbol B shows the length of the front side fastening part 31 in the transversal direction of a diaper, and the code | symbol D has shown the length of the discontinuous area | region 12a. And as FIG. 2 shows, it is preferable that the length B of the front side fastening part 31 is shorter than the length D of the discontinuous area | region 12a (B <D). For example, the length B may be 20% to 90% and 50% to 80% with respect to the length D. By adjusting the length B of the front fastening part 31 and the length D of the discontinuous region 12a so as to satisfy such a condition, the whole front fastening part 31 is made as shown in FIG. , It is possible to fasten to the discontinuous regions 12a of the plurality of Tammy elastic members 12 arranged around the abdomen of the exterior body 10, so that the fastening strength by the front side fastening part 31 is improved.

  Similarly, the rear fastening part 41 of the absorbent main body 20 may have a shorter length in the short direction of the diaper than the length of the discontinuous region 12a. preferable. As a result, the entire rear fastening portion 41 can be fastened to the discontinuous regions 12a of the plurality of tammy stretchable members 12.

  FIG. 4 is a cross-sectional view showing a state in which the absorbent main body 20 is cut in the lateral direction along the line XX shown in FIG. As shown in FIG. 4, the absorbent main body 20 basically includes an absorbent body 21, a top sheet 22, and a back sheet 23. The absorbent main body 20 further includes a pair of left and right side sheets 24.

  The absorber 21 is a member for absorbing liquid such as urine and holding the absorbed liquid. The absorber 21 is disposed between a liquid-permeable top sheet 22 and a liquid-impermeable back sheet 23. The absorber 21 is made of an absorbent material having a function of absorbing the liquid that has passed through the top sheet 22. A well-known material can be employ | adopted for the absorptive material which comprises the absorber 21. FIG. As an absorptive material, for example, one kind of fluff pulp, a superabsorbent polymer, or a hydrophilic sheet may be used alone, or two or more kinds may be used in combination. The absorbent material is usually used in the form of a single layer or a plurality of layers. The absorber 21 is preferably enclosed in a region between the top sheet 22 and the back sheet 23. That is, it is preferable that the top sheet 22 and the back sheet 23 are joined to each other so as to surround the absorber 21. The shape of the absorber 21 can be appropriately designed according to the shape, size, and application of the disposable diaper. For example, the shape of the absorbent body 21 is preferably an hourglass shape as shown in FIG. Moreover, the absorber 21 is good also as a rectangular shape, an ellipse shape, or a gourd shape currently used for the general disposable diaper.

  The top sheet 22 is a member that directly contacts the skin of the wearer's crotch and allows liquid such as urine to pass through the absorbent body 21. For this reason, the top sheet 22 is composed of a liquid-permeable material having high flexibility. Further, the top sheet 22 is disposed so as to cover the surface of the absorber 21. The example of the impermeable material which comprises the top sheet 22 is a woven fabric, a nonwoven fabric, or a porous film. Further, for example, a fiber made of a thermoplastic resin such as polypropylene, polyethylene, polyester, or nylon, which has been subjected to a hydrophilization treatment and further made into a non-woven fabric may be used.

  The back sheet 23 is a member for preventing the liquid that has passed through the top sheet 22 and absorbed by the absorber 21 from leaking. For this reason, the back sheet 23 is made of a liquid-impermeable material. The back sheet 23 is disposed so as to cover the bottom surface of the absorber 21 in order to prevent liquid leakage from the bottom surface of the absorber 21. An example of the liquid-impermeable material constituting the back sheet 23 is a liquid-impermeable film made of polyethylene resin. In particular, it is preferable to use a microporous polyethylene film in which a plurality of fine pores of 0.1 to 4 μm are formed. As shown in FIG. 4, the absorber 21 is placed on the back sheet 23, the top surface of the placed absorber 21 is covered with the top sheet 22, and the top sheet 22 covering the absorber 21 is formed. , And bonded to the back sheet 23 along both side edges of the absorber 21. The top sheet 22 and the back sheet 23 may be bonded by, for example, an adhesive method using a hot melt adhesive or other fluid adhesive, or may be bonded by heat welding such as heat sealing or ultrasonic welding. It may be.

  The pair of side sheets 24 is a member that is provided on both sides of the absorbent body 21 and forms a pair of three-dimensional gathers. The pair of three-dimensional gathers stands along both side edges of the absorbent main body 20, and functions as a leak-proof wall to prevent side leakage of urine excreted by the wearer. A pair of side sheets 24 arranged along both side edges of the absorbent body 21 is fixed on the top sheet 22 along the longitudinal direction of the diaper. The pair of side sheets 24 is fixed to the top surface of the top sheet 22 and the bottom surface of the back sheet 23 so as to sandwich both side edges of the top sheet 22 and the back sheet 23. In the side sheet 24, a plurality of elastic elastic members 25, 26 are disposed along the length direction of the disposable diaper, and a three-dimensional gather is formed using the contraction force of the plurality of elastic elastic members 25, 26. . That is, when the plurality of elastic elastic members 25 and 26 contract, the pair of side sheets 24 contracts and the three-dimensional gather rises.

  As shown in FIG. 4, the plurality of elastic elastic members are arranged on the outer gather elastic members 25 arranged on the outer side in the short direction of the pair of side sheets 24 and on the inner side in the short direction of the pair of side sheets 24. The inner gathered elastic member 26 is classified. That is, as shown in FIG. 4, the side sheet 24 partially fixed to the back surface (non-skin contact surface) of the back sheet 23 along the length direction of the absorber 21 is replaced with the top sheet 22 and the back sheet. The outer folded portion 24a is formed by folding back toward the inside of the absorbent main body 20 on the outer side in the width direction from the joining position of 23. A plurality of outer gather expansion / contraction members 25 are arranged along the length direction of the disposable diaper on the outer folded portion 24a of the side seat 24. Thereby, the side seat | sheet 24 stands | stands up in the outer side folding | returning part 24a using the contraction force of the outer gather expansion-contraction member 25, and forms an outer gather part. Further, a part of the side sheet 24 folded at the outer folding part 24 a is fixed on the surface (skin contact surface) of the top sheet 22 so as to sandwich the top sheet 22 and the back sheet 23. Further, the side sheet 24 extends inward in the width direction from the fixed line with the top sheet 22, and the extending part faces inward in the width direction or outward in the width direction of the absorber 21. Are folded back to form the inner folded portion 24b. A plurality of inner gather expansion / contraction members 26 are arranged along the length direction of the disposable diaper in the inner folded portion 24b of the side seat 24. Thereby, the side seat | sheet 24 stands up using the contraction force of the inner gather expansion-contraction member 26 in the inner side folding | returning part 24b, and forms an inner gather part.

  Then, with reference to FIG. 5, the usage method of the underpants type disposable diaper which concerns on the 1st Embodiment of this invention is demonstrated. Fig.5 (a)-(c) is the schematic diagram which showed the cross section of the side of the underpants type disposable diaper 100.

  As shown in FIG. 5A, before the disposable diaper 100 is worn, the absorbent main body 20 is disposed inside the exterior body 10 formed in a pants shape. At this time, the rear fastening portion 41 provided on the back surface side of the rear end portion 40 of the absorbent main body 20 is fastened to the skin contact surface side of the exterior body 10. Thereby, the absorptive main body 20 is partially fixed to the exterior body 10. Further, as shown in FIG. 5A, in a state where the absorbent main body 20 is disposed inside the exterior body 10, the absorbent main body 20 has a part of the front end portion 30 around the trunk of the exterior body 10. A front extension region 32 is formed extending from the opening. A front fastening portion 31 is provided on the back side of the front extension region 32. In the initial state as shown in FIG. 5 (a), the front extension portion 32 is bent outward along the boundary line with the front adjustment margin region 33, so that the front fastening portion 31 is attached to the exterior body. 10 can be fixed to the non-skin contact surface side. The wearer can wear the disposable diaper 100 on the crotch in the state shown in FIG.

  Next, after the disposable diaper 100 is mounted, in order to bring the absorbent main body 20 into close contact with the body (particularly the urination opening), the wearer or the like grasps the front end 30 of the absorbent main body 20 and moves upward. Pull up. Thereby, as FIG.5 (b) shows, only the absorptive main body 20 lifts upwards. In this way, the upper and lower positions of the absorbent main body 20 can be adjusted so as to be closely attached to the urination port according to the wearer's individual body.

  When the adjustment of the vertical position of the absorbent main body 20 is completed, the front end 30 of the absorbent main body 20 is folded outward in the front adjustment margin region 33 as shown in FIG. After the front end portion 30 of the absorbent main body 20 is folded back, the front fastening portion 31 provided on the back surface of the front end portion of the front extension region 32 is fastened to the skin non-contact surface side of the exterior body 10. Thereby, the longitudinal direction both ends of the absorptive main body 20 are fixed to the exterior body 10, and the absorptive main body 20 is fixed to the exterior body 10.

  In addition, even if the wearer exercises and the position of the absorbent main body 20 is shifted, the absorbency can be achieved by performing the procedure shown in FIGS. 5 (a) to 5 (c). The vertical position of the main body 20 can be adjusted repeatedly. The pants-type disposable diaper 100 of the present invention does not require the exterior body 10 or the absorbent main body 20 to be lowered to below the knee when adjusting the vertical position of the absorbent main body 20, and the wearer keeps wearing the disposable diaper 100. The vertical position of the absorbent main body 20 can be adjusted.

(2. Second Embodiment)
FIG. 6 shows a pants-type disposable diaper 200 according to the second embodiment of the present invention. FIG. 6 shows a state where the disposable diaper 200 according to the second embodiment is developed and the exterior body 10 and the absorbent main body 20 are juxtaposed. Here, the pants-type disposable diaper 200 according to the second embodiment will be described with a focus on differences from the first embodiment described above. In FIG. 6, the same elements as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  As shown in FIG. 6, in the second embodiment, in the front end portion 30 of the absorbent main body 20, the front extension region 32 is formed to extend in the shorter direction than the front adjustment margin region 33. Yes. That is, as shown in FIG. 6, the front end 30 of the absorbent main body 20 has protrusions 32 a that protrude in the left and right sides in the front extension region 32. For example, it is preferable that the lateral width including the protruding portion 32 a of the front extension region 32 is widened to about 105% to 150%, or 110% to 130% with respect to the lateral width of the front adjustment margin region 33.

  As described above, by forming the protrusion 32 a in the front extension region 32, the wearer or the like holds the front extension region 32 and positions the absorbent main body 20 disposed inside the exterior body 10. It becomes easy to adjust. Furthermore, by forming the protrusion 32a, the front extension region 32 can be easily folded back toward the back surface along the boundary line with the front adjustment margin region 33. Therefore, the second embodiment is excellent in the operability of the absorbent main body 20.

(3. Third embodiment)
FIG. 7 shows a pants-type disposable diaper 300 according to the third embodiment of the present invention. FIG. 7 is a perspective view showing a pant-type disposable diaper 300 according to the third embodiment as viewed from the front body 1 side. Here, the pants-type disposable diaper 300 according to the third embodiment will be described with a focus on differences from the first embodiment described above.

As shown in FIG. 7, in the third embodiment, the target member 7 is attached to the skin non-contact surface side of the front body 1 of the exterior body 10. The target member 7 is a member for fastening and holding the front side fastening part 31 provided on the back side of the front side extension region 32 of the absorbent main body 20.
The target member 7 is provided on the outer surface of the front body 2 of the exterior body 10 and constitutes a fastening mechanism together with the front side fastening part 31. For example, when an adhesive tape is employed as the front side fastening portion 31, the target member 7 may be formed of a plastic film having a smooth surface. On the other hand, when a hook material of a planar fastener is employed as the front side fastening portion 31, a loop material may be employed as the target member 7. Thus, as the fastening mechanism, it is particularly preferable to use a planar fastener that is fixed by mechanical coupling of a hook material (male member) and a loop material (female member). The surface fastener is composed of, for example, a combination of a hook material having a large number of protrusions (such as hooks and mushrooms) formed on the surface and a loop material having loop-shaped fibers disposed on the surface. For example, a hook material may be adopted as the front side fastening portion 31 and a loop material may be formed on the target member 7. In the surface fastener, when the hook material is bonded to the surface of the loop material, a large number of protrusions of the hook material are engaged with the surface of the loop material. For this reason, the surface fastener is preferable in that the hook material and the loop material are peelable and can be firmly fixed, can be repeatedly used, and has high fixing strength. .

  The front fastening part 31 provided in the absorbent main body 20 is fastened to the target member 7 while adjusting the position in the vertical direction. For this reason, it is preferable that the target member 7 has a vertically long shape that is long in the vertical direction of the diaper, as shown in FIG. In other words, the target member 7 is preferably formed in a rectangular shape that is long in the longitudinal direction of the diaper. Further, the lateral width of the target member 7 is formed wider than at least the lateral width of the front fastening portion 31 provided in the absorbent main body 20. By making the target member 7 in such a shape, it becomes easy to fasten to the target member 7 while adjusting the vertical position of the front fastening portion 31 provided in the absorbent main body 20.

(4. Fourth embodiment)
8 and 9 show a pants-type disposable diaper 400 according to the fourth embodiment of the present invention. FIG. 8 is a perspective view showing a pants-type disposable diaper 400 according to the fourth embodiment as viewed from the front body 1 side. Moreover, FIG. 9 has shown the state which expand | deployed the disposable diaper 400 which concerns on 4th Embodiment, and arranged the exterior body 10 and the absorptive main body 20 side by side. Here, the pants-type disposable diaper 400 according to the fourth embodiment will be described with a focus on differences from the first embodiment described above.

  As shown in FIGS. 8 and 9, in the fourth embodiment, the front extension region 32 in the front end 30 of the absorbent main body 20 extends longer than that in the first embodiment. More specifically, in the fourth embodiment, the front extension region 32 is a front fastening portion provided at the tip of the front extension region 32 when the absorbent main body 20 is disposed on the exterior body 10. 31 has an extension length that can extend over a plurality of Tammy elastic members 12 arranged around the belly of the exterior body 10. That is, as shown in FIG. 9, the extension length E of the front side extension region 32 is a Tammy stretchable member disposed at a position closest to the crotch 3 from the edge 1 a on the front body 1 side of the exterior body 10. It is longer than the distance T up to 12 (E> T). For example, the extension length E may be 105% to 150%, 110% to 140%, or 120% to 130% with respect to the distance T. As described above, the front extension region 32 has a length that can extend over the plurality of Tammy elastic members 12, so that the front-side fastening portion provided at the front end portion of the front extension region 32 is provided. 31 can be firmly fixed to the outer sheet 15 of the exterior body 10 without being affected by wrinkles caused by the shrinkage of the waist elastic member 11 and the tammy elastic member 12.

  Further, since the front extension region 32 of the absorbent main body 20 has a sufficient extension length as described above, discontinuous regions 12a are formed in the plurality of Tammy stretchable members 12 as in the first embodiment. No need to do. For this reason, as shown in FIGS. 8 and 9, in the fourth embodiment, a plurality of Tammy stretchable members 12 are continuously provided over the entire width direction in the front body 1 and the back body 2 of the exterior body 10. Has been placed. Thus, by arranging the plurality of Tammy stretchable members 12 over the entire width direction of the exterior body 10, the adhesion between the exterior body 10 and the wearer's body (particularly around the abdomen) is improved. Furthermore, since the absorptive main body 20 interposed between the exterior body 10 and the wearer's body is firmly fixed, the misalignment of the absorptive main body 20 hardly occurs.

(5. Fifth embodiment)
FIG. 10 shows a pants-type disposable diaper 500 according to the fifth embodiment of the present invention. FIG. 10 shows a state where the disposable diaper 500 according to the fifth embodiment is developed and the exterior body 10 and the absorbent main body 20 are juxtaposed. Here, the pants-type disposable diaper 500 according to the fifth embodiment will be described with a focus on differences from the above-described first embodiment.

  As shown in FIG. 10, in the fifth embodiment, the front end 30 of the absorbent main body 20 only has a front extension region 32 extending from the edge 1 a on the front body 1 side of the exterior body 10. Instead, the rear end portion 40 of the absorbent main body 20 has a rear extension region 42 extending from the end edge 2 a on the rear body 2 side of the exterior body 10. That is, as shown in FIG. 10, when the rear end 40 is arranged so that the center position of the outer package 10 and the center position of the absorbent body 21 included in the absorbent main body 20 are aligned on the straight line L1, From the straight line L3, the rear side extended region 42 extending outward in the longitudinal direction from the straight line L3, with the straight line L3 extending in the left-right direction of the figure along the edge 2a of the back body 2 of the exterior body 10 as a boundary line Is also divided into a rear adjustment margin region 43 located closer to the absorber 21.

  As described above, a diaper is formed by forming a rear extension region 42 extending from the edge 2a of the exterior body 10 not only at the front end 30 but also at the rear end 40 of the absorbent body 20. When mounting the body, the position of the absorbent main body 20 can be adjusted from either the front body 1 side or the back body 2 side. Further, both the front end portion 30 and the extension regions 32 and 42 of the rear end portion 40 of the absorbent main body 20 can be grasped with both hands, and the position of the absorbent main body 20 can be adjusted more easily. Become.

  Regarding the rear end portion 40 (the rear extension region 42 and the rear adjustment margin region 43) of the absorbent main body 20, the first embodiment, the second embodiment, the third embodiment, and the first embodiment described above. All the features of the front end 30 (the front extension region 32 and the front adjustment margin region 33) of the fourth embodiment can be employed. For example, the rear end portion 40 of the absorbent main body 20 may be wider than the rear extension region 42 and the rear adjustment margin region 43. Moreover, even if the skin contact surface side of the back body 2 of the absorbent main body 20 is provided with a target member to which the rear fastening portion 41 provided on the back side of the rear extension region 42 is fastened. Good. In addition, the extension length of the rear extension region 42 of the absorbent main body 20 may be a length that can exceed the plurality of waist elastic members 11, and the plurality of tammy elastic members 12 may be further extended. It may be a length that can be crossed over.

(6. Sixth embodiment)
FIG. 11: is a figure for demonstrating the underpants type disposable diaper 600 which concerns on the 6th Embodiment of this invention. FIG. 11 is a schematic diagram showing a cross section of a side surface of a pants-type disposable diaper 600. Here, the pants-type disposable diaper 600 according to the sixth embodiment will be described with a focus on differences from the above-described first embodiment.

  As shown in FIG. 11, in the sixth embodiment, the disposable diaper 600 has a plurality of absorbent main bodies 20 with respect to one exterior body 10. Specifically, two absorptive main bodies 20 are attached to the inside of one exterior body 10. As the configurations of the exterior body 10 and the absorbent main body 20, those of the above-described embodiment can be adopted. Thus, when a plurality of absorptive main bodies 20 are attached to one exterior body 10, it is preferable that at least the absorptive main body 20 located at the uppermost part is detachably attached.

  By arranging a plurality of absorbent main bodies 20 so as to overlap one exterior body 10 as described above, urination can be easily performed by simply removing the absorbent main body 20 that has absorbed liquid after urination. Can be processed. For this reason, the replacement | exchange operation | work of the absorptive main body 20 which absorbed liquids, such as urine, becomes a simple thing.

As described above, the pants-type disposable diaper of the present invention has been described by taking a preferable embodiment as an example. However, the present invention is not limited to the above-described embodiments, and those skilled in the art can make appropriate modifications and alterations within the obvious range based on the above-described embodiments.
For example, in the above-described embodiment, an example in which the front end 30 and the rear end 40 of the absorbent main body 20 are formed by extending the top sheet 22 and the back sheet 23 has been described. The rear end 40 may be formed of a sheet member such as a non-woven fabric separate from the top sheet 22 and the back sheet 23.
In addition, for example, the pair of left and right side sheets 24 can be extended to a position where the front end 30 and the rear end 40 of the absorbent main body 20 are formed.

  The pants-type disposable diaper according to the present invention can be applied to diapers for infants and the elderly. Therefore, the present invention can be suitably used in industries related to childcare and nursing care.

DESCRIPTION OF SYMBOLS 1 Front body 1a Edge 2 Back body 2a Edge 3 Crotch part 4 Trunk opening 5 Leg opening 6 Side seal part 7 Target member 10 Exterior body 11 Waist elastic member 12 Tammy elastic member 12a Discontinuous area 13 Leg expansion and contraction Member 14 Inner sheet 15 Outer sheet 20 Absorbent body 21 Absorber 22 Top sheet 23 Back sheet 24 Side sheet 24a Outer folded part 24b Inner folded part 25 Outer gather elastic member 26 Inner gather elastic member 30 Front end 31 Front fastening part 32 Front side extension region 33 Front side adjustment margin region 40 Rear side end portion 41 Rear side fastening portion 42 Rear side extension region 43 Rear side adjustment margin region 100 Disposable diaper (first embodiment)
200 disposable diapers (second embodiment)
300 disposable diapers (third embodiment)
400 disposable diapers (fourth embodiment)
500 disposable diapers (fifth embodiment)
600 disposable diapers (sixth embodiment)

Claims (8)

A crotch part (3) is interposed between the front body (1) and the back body (2) to form a waist opening (4) and a pair of left and right leg openings (5). An exterior body (10);
An absorbent main body (20) that extends in the longitudinal direction from the front body (1) to the back body (2) with respect to the outer body (10) and is disposed at a position including the crotch part (3); A pants-type disposable diaper comprising
The absorbent body (20)
An absorber (21) for absorbing and holding liquid;
A top sheet (22) covering the absorbent body (21) from the surface side;
A back sheet (23) covering the absorber (21) from the back side;
On the front body (1) side, a front end (30) extending outward in the longitudinal direction from the absorber (21);
A front side fastening portion (31) provided on the back side of the front side end portion (30) and fastened to the exterior body (10);
On the back body (2) side, a rear end (40) extending outward in the longitudinal direction from the absorber (21);
A rear side fastening part (41) provided on the back side of the rear side end part (40) and fastened to the exterior body (10),
The front end (30) and / or the rear end (40) are either
An extension region extending from an edge of the exterior body (10) forming the trunk periphery opening (4) in a state where the absorbent body (21) is disposed in alignment with the center of the exterior body (10). A pants-type disposable diaper having (32, 42). The exterior body (10) has one or a plurality of waist elastic members (11) fixed in an elongated state along the short direction in the vicinity of the waist opening (4).
When the distance from the edge that forms the waist opening (4) to the one provided at the position closest to the crotch (3) of the waist elastic member (11) is W,
The disposable diaper according to claim 1, wherein a length E of the extension region (32, 42) extending from an edge of the exterior body (10) is longer than the distance W. The exterior body (10) is one or a plurality of tammy expansion / contraction members fixed in an elongated state along the short direction at a position closer to the crotch (3) than the one or a plurality of waist expansion / contraction members (11). (12)
The one or more Tammy elastic members (12) have a discontinuous region (12a) that is discontinuous at the center in the short direction of the exterior body (10),
The length D in the short direction of the exterior body (10) of the discontinuous region (12a) is the length of the absorbent main body (20) of the front side fastening part (31) and the rear side fastening part (41). The disposable diaper according to claim 2, wherein the disposable diaper is longer than a length B in a short direction. The front end (30) has the extension region (32),
The front side fastening part (31) provided on the back side of the extension region (32) of the front side end part (30) is fastened to the skin non-contact surface side of the exterior body (10). Yes,
The rear fastening portion (41) provided on the back surface side of the distal end portion of the rear end portion (40) is fastened to the skin contact surface side of the exterior body (10). The disposable diaper according to claim 3. The front end (30) and / or the rear end (40) are either
The extension region (32, 42);
In the longitudinal direction, it has a regulation margin region (33, 43) located between the absorber (21) and the extension region (32, 42),
The disposable diaper according to any one of claims 1 to 3, wherein the extension region (32, 42) is formed wider than the adjustment margin region (33, 43). Both the front body (1) side and the rear body side (2) of the exterior body (10) or any one of the skin non-contact surface side,
A target member (7) is provided that engages with or either one of the front side fastening part (31) and the rear side fastening part (41) provided in the extension region (32, 42). The disposable diaper according to any one of claims 1 to 3. The exterior body (10) is one or a plurality of tammy expansion / contraction members fixed in an elongated state along the short direction at a position closer to the crotch (3) than the one or a plurality of waist expansion / contraction members (11). (12)
When the distance from the edge that forms the waistline opening (4) to the one provided at the position closest to the crotch (3) of the tammy stretchable member (12) is T,
The disposable diaper according to claim 2, wherein a length E of the extension region (32, 42) extending from an edge of the exterior body (10) is longer than the distance T. A plurality of the absorbent main bodies (20) are arranged so as to overlap the exterior body (10),
The disposable diaper according to claim 1, wherein at least one of the plurality of absorbent main bodies (20) is detachable from the exterior body 10.

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