JP2017064328A - Pants-type diaper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To widely secure an effective absorbent width of an absorber, suppress the formation of a gap between a wearer and the absorber, and also reduce resistance felt at the wearing time.SOLUTION: A pants-type diaper 1 includes: extensible zones A where an elastic member FG can extend, on both sides of a width direction W outside superposed on an absorber 30 and including both side edges 30E along the longitudinal direction L of the absorber 30, in at least one of a front girth member 4 and a rear girth member 5; and a non-extensible zone B where the elastic member FG cannot extend, in a width direction W inner side than both side edges 30E of the absorber 30. A position of an end E1 in the width direction W inside of the extensible zone A on one side of the width direction W outside including both side edges 30E, and a position of an end E2 in the direction W inside of the extensible zone A on the other side of the width direction W outside including both side edges 30E are provided while being deviated from each other in the longitudinal direction L.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a pants-type diaper.

  Conventionally, in the center region in the width direction of the front waistline member (the region where the absorber is disposed), by cutting an elastic member (an elastic member for fit gather) that can be expanded and contracted in the width direction, the width direction of the elastic member A pants-type diaper is known that is configured to partially suppress the stretchability in order to maintain the absorber in a flat state as much as possible and to ensure a wide effective absorption width of the absorber (see Patent Document 1). ).

JP 2014-221112 A (paragraph 0031)

  However, even if the elastic member is cut in the center region in the width direction of the above-mentioned front waistline member and the elastic member forms a non-stretchable region that cannot be stretched, the longitudinal direction is formed on both sides of the non-stretchable region on the outer side in the width direction. If the elastic member is arranged at the same position in the longitudinal direction so as to be the stretchable area of the same length at the same position, the reduction of the effective absorption width of the absorber due to the contraction of the elastic member can be suppressed, but such non-stretching When there is an elastic member in the region, there is a tendency for wrinkles to occur in the width direction of the absorber in the virtual part, so that the absorber is warped and a gap is easily formed between the wearer and the absorber was there.

  Further, when the wearer tries to pull up the pant-type diaper one side at a time, the force applied to one side of the pant-type diaper is transmitted to the elastic member provided on the other side, and the pant-type diaper There is a tendency to increase the resistance felt by the wearer when pulling up. This has the problem that it is inconvenient for elderly people with physical disabilities.

  Therefore, the present invention has been made in view of the above-described problems, and while ensuring a wide effective absorption width of the absorbent body, suppressing the formation of a gap between the wearer and the absorbent body, and wearing it together An object of the present invention is to provide a pants-type diaper that can reduce resistance sometimes felt.

  The first feature of the present invention includes a front waistline member, a rear waistline member, an absorber body extending from the front waistline member to the rear waistline member, and the absorber body having a width direction and a longitudinal direction orthogonal to each other. A pants-type diaper having an absorbent body disposed on the front waistline member and the rear waistline member at a predetermined interval in the longitudinal direction, wherein the front waistline member and Both side portions of the rear waistline member are joined to form a waist opening and a leg opening, and at least one of the front waistline member and the rear waistline member overlaps the absorber and the absorber The elastic member has stretchable areas that can expand and contract on both sides in the width direction outside including both side edges along the longitudinal direction, and on the inner side in the width direction than the both side edges of the absorber. The elastic member has a non-stretchable region that cannot be stretched and includes the position of the end portion on the inner side in the width direction of the stretchable region on the outer side in the width direction including the both side edges, and the width direction including the both side edges. The gist is that the position of the end portion on the inner side in the width direction of the stretchable region on the other outer side is shifted from each other in the longitudinal direction.

  As described above, according to the present invention, the effective absorption width of the absorbent body is ensured widely, the formation of a gap between the wearer and the absorbent body is suppressed, and the resistance felt during wearing is reduced. A pants-type diaper that can be used can be provided.

It is an external view of an example of the underpants type diaper which concerns on the 1st Embodiment of this invention. It is the top view (skin contact surface side) which fractured | ruptured and developed one example of the underpants type diaper which concerns on the 1st Embodiment of this invention in a junction part. It is XX sectional drawing in FIG. It is the top view (skin contact surface side) which fractured | ruptured and expanded one example of the underpants type diaper which concerns on the example of a change of this invention.

(First embodiment)
With reference to FIG. 1 thru | or FIG. 3, the underpants type diaper 1 which concerns on the 1st Embodiment of this invention is demonstrated.

  In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic and ratios of dimensions and the like are different from actual ones.

  Therefore, specific dimensions and the like should be determined in consideration of the following description. Moreover, the part from which the relationship and ratio of a mutual dimension differ also in between drawings may be contained.

  As shown in FIGS. 1 to 3, the pants-type diaper 1 according to the present embodiment has a width direction W and a longitudinal direction L that are orthogonal to each other, and includes a front waistline member (front body) 4 and a rear waistline member (rear). Body) 5, absorber body (interior body) 3, absorber (absorber core) 30, and a plurality of elastic members WG, FG, LG.

  Moreover, in the underpants type diaper 1 which concerns on this embodiment, both the side parts 50E of the front waistline member 4 and the back waistline member 5 are joined, and the waist opening part H2 and the leg opening part H1 are formed.

  The absorber body 3 extends to the front waistline member 4 and the rear waistline member 5. For example, the absorbent body 3 may be disposed so as to overlap the front waistline member 4 and the rear waistline member 5, or may be disposed so as to overlap only at least one of the front waistline member 4 and the rear waistline member 5. . The absorber 30 is disposed in the absorber body 3.

  Further, the elastic members WG, FG, LG are arranged at a predetermined interval in the longitudinal direction L in the front waistline member 4 and the rear waistline member 5. Here, the elastic member WG is an elastic member (a waistline elastic member) that is disposed on the side of the waist opening H2 and forms a waist gather, and the elastic member FG is an elastic member that forms a fit gather, and the elastic member LG is an elastic member (leg elastic member) that is disposed on the leg opening H1 side and constitutes a leg gather.

  As shown in FIG. 3, in the front waistline member 4 and the rear waistline member 5, the elastic members WG, FG, LG and the adhesive are laminated between the top sheet 20 and the back sheet 10 (a pair of sheet members). It is configured.

  Further, the absorbent body 3 is configured such that the absorbent body 30 and the adhesive are laminated between the top sheet 40 and the back sheet 41 (a pair of sheet members).

  As shown in FIGS. 1 and 2, at least one of the front waistline member 4 and the rear waistline member 5 is provided with a stretchable area A and a non-stretchable area B. In the pants-type diaper 1 according to the present embodiment, a case where the stretchable region A and the non-stretchable region B are provided only in the front waistline member 4 will be described, but the present invention is not limited to such a case.

  Here, the stretchable area A overlaps with the absorber 30 and is provided on both sides on the outer side in the width direction W including both side edges 30E along the longitudinal direction L of the absorber 30 (left and right sides of both side edges 30E). This is a region where the member FG (or elastic member LG, hereinafter the same) can expand and contract. In the stretchable region A, the elastic member FG is joined to the back sheet 10 (and the top sheet 20). In the present embodiment, the both side edges 30 </ b> E described above include an area of about 10 mm inside the width direction W from the edge outside the width direction W of the absorber 30.

  On the other hand, the non-stretchable region B is a region that is provided on the inner side in the width direction W with respect to both side edges 30E of the absorber 30, and the elastic member FG is not stretchable.

  Here, the non-stretchable region B in which the elastic member FG is not stretchable means that the elastic member FG is not fixedly arranged in the stretched state, and is regarded as not stretched if the stretch rate is up to about 10%. . The stretch rate is obtained by pulling and fixing the pants-type diaper 1 in a state where there is no wrinkle in the longitudinal direction L and the width direction W at the position where the elastic member FG is present, and the entire member overlapping the elastic member FG. The pants-type diaper 1 is cut out of a certain length Amm in the width direction W, only the elastic member FG contained therein is immersed in toluene, and then taken out, and the length Bmm after drying is measured. The expansion / contraction rate is (A / B × 100-100)%. If it is negative, the expansion rate is considered to be zero. That is, in the non-stretchable region B, the elastic member FG is not joined to the top sheet 20 and the back sheet 10 of the front waistline member 4 in an expanded state.

  In addition, outside the width direction W of the non-stretchable region B, the elastic member FG that is 1/2 or less the length of the stretchable region A in the width direction may be joined to the backsheet 10 (and the topsheet 20). . Thus, the area | region where the elastic member FG is joined to the back seat | sheet 10 (and top sheet 20) shall not be regarded as the expansion-contraction area A.

  In this way, the elastic member FG is joined to the back sheet 10 (and the top sheet 20) in a region that is 1/2 or less of the length of the stretch region A in the width direction W outside the non-stretch region B in the width direction W. Even so, it is easy to obtain the effect of reducing wrinkles due to the displacement of the elastic member FG in the longitudinal direction L.

  As shown in FIG. 2, the position of the end E1 in the width direction W of the stretchable area A on one side (for example, the left side of the side edges 30E) on the outer side in the width direction W including the side edges 30E and the side edges 30E are included. The position of the end portion E2 inside the width direction W of the stretchable region A on the other side outside the width direction W (for example, the right side of both side edges 30E) is shifted from each other in the longitudinal direction L. That is, the end E1 inside the width direction W and the end E2 inside the width direction W of the stretchable region A are not on the same straight line in the width direction.

  Here, the position of the end portion E1 inside the width direction W of the stretchable area A on the one side outside the width direction W including the side edges 30E (for example, the left side of the side edges 30E), and the width direction W outside including the side edges 30E Whether or not the position of the end portion E2 on the inner side in the width direction W of the stretchable area A on the other side (for example, the right side of both side edges 30E) is shifted from each other in the longitudinal direction L. It can confirm by measuring the distance from the waist opening part H2 of the elastic member FG which exists in edge part E1, E2 inside the width direction W of this. In other words, it can be said that the elastic members FG present at the end portions E1 and E2 on the inner side in the width direction W of the respective stretchable areas A are different when the distance from the waist opening H2 is different.

  According to this configuration, since the stretchability in the region where the absorber 30 is disposed is suppressed by providing the non-stretchable region B, the absorber 30 is maintained in a flat state in the front waistline member 4. And the effective absorption width of the absorber 30 can be ensured widely.

  Moreover, according to this structure, between the one side of the width direction W outer side including the both-sides edge 30E of the area | region where the absorber is arrange | positioned, the edge part E1 of the width direction W inner side of the elastic member FG, Since the position of E2 is provided so as to be shifted from each other in the longitudinal direction L, it is possible to suppress wrinkles from occurring along the width direction W in the region where the absorber 30 is disposed, and the wearer and the absorber It is possible to prevent a gap from being formed between them.

  Further, according to this configuration, when the wearer intends to pull up the pant-type diaper 1 one side at a time, the force applied to one side holding the pant-type diaper 1 in the hand is applied to the elastic member provided on the other side. As a state that is difficult to be transmitted, the resistance felt at the time of wearing can be reduced.

  Moreover, in the underpants type diaper 1 which concerns on this embodiment, the measurement of the adhesive agent arrange | positioned between the top sheet 20 and the back seat | sheet 10 (a pair of sheet | seat member) in the non-stretchable region B is carried out to the elastic member FG of the stretchable region A. You may be comprised so that it may become lower than the measurement of the adhesive agent arrange | positioned along.

  According to this configuration, the amount of adhesive (weight per unit area) in the non-stretchable region B in which the elastic member FG is discontinuous is the amount of adhesive (unit per unit weight) in the stretchable region A in which the elastic member FG is continuous. Is lower, the flexibility of the region where the absorber is disposed can be secured, the front waistline member 4 and the rear waistline member 5 can be configured flexibly as a whole, and the elastic member FG in the stretchable region A Since the back sheet 10 (or the top sheet 20) is firmly joined, it is easy to convey the force to pull up the pant diaper 1 to the entire pant diaper 1.

  Furthermore, in the pants-type diaper 1 according to the present embodiment, in the longitudinal direction L, the width E of the stretched area A on the one side of the side edges 30E in the width direction W and the width of the stretched area A on the other side of the side edges 30E. The ends E2 on the inner side in the direction W may be alternately arranged. That is, in the elastic member FG on both sides (the left side and the right side) on the outer side in the width direction W including both side edges 30E of the absorber 30, the inner side in the width direction W of the stretchable region A closest to the center in the width direction W of the absorber 30 When the positions of the end portions E1 / E2 are compared on the left side and the right side, they are shifted from each other in the longitudinal direction L of the end portion E1 / E2 inside the width direction W of each stretchable area A.

  Further, on the outer side in the width direction W including both side edges 30E, the predetermined interval at which the elastic members FG are arranged in the longitudinal direction L on the side edges 30E side may be in a range of 5 mm to 50 mm. When the predetermined interval is smaller than 5 mm, the effect of reducing wrinkles due to the displacement of the elastic member FG in the longitudinal direction L is reduced, and wrinkles are easily formed in the width direction W, and the elongation stress is increased. It takes power to raise 1. On the other hand, when the predetermined interval is larger than 50 mm, the fit property to the wearer's body is lowered.

  Moreover, the predetermined intervals on the one side (for example, the left side) and the other side (for example, the right side) outside the width direction W including both side edges 30E of the absorber 30 may be configured to be substantially equal. According to such a configuration, the stretchable area A can be evenly provided on both sides of the side edges 30E, and the fit can be enhanced and the shift during wearing can be prevented without impairing the appearance.

  Moreover, in the underpants type diaper 1 which concerns on this embodiment, the width direction W of the expansion | extension area | region A is at least one side (for example, the left side of the both-sides edge 30E) of the both sides of the width direction W including the both-sides edge 30E of the absorber 30. May be configured to be different in the longitudinal direction L.

  According to this configuration, the length in the width direction W of the stretchable region A formed by the plurality of elastic members FG arranged at predetermined intervals in the longitudinal direction L is different in the longitudinal direction L, so that the pants-type diaper 1 can be adjusted in the width direction W. Accordingly, the portion having a short length in the width direction W of the expansion / contraction area A is weaker than the provision of the expansion / contraction area A having a relatively long length in the width direction W while ensuring the fit according to the part. Thus, the front waistline member 4 (or the rear waistline member 5) can be easily stretched.

  Further, according to this configuration, since the length in the width direction W of the non-stretchable region B corresponding to the virtual portion is different in the longitudinal direction L when the elastic member FG is present, wrinkles along the width direction W are formed in the non-stretchable region B. In addition, it is difficult to do.

  Here, in the underpants type diaper 1 which concerns on this embodiment, the absorber 30 is arrange | positioned on the non-skin contact surface side rather than the 1st layer absorber, and the 1st layer absorber arrange | positioned on the skin contact surface side. The second layer absorber may be included. In such a case, the elastic member FG has a width including both side edges 30E in a region where at least one of the first layer absorber and the second layer absorber is arranged among the regions where the absorber 30 is arranged. You may be comprised so that it may be arrange | positioned in the direction W outer side.

  According to such a configuration, the elastic member FG is provided in the region where only one of the first layer absorber and the second layer absorber is disposed in the region where the absorber 30 is disposed. The absorbent body 30 having only one layer, which is relatively prone to wrinkles, is arranged while improving the fit to the body of the wearer of the absorbent body 30 due to the presence of the region where the absorbent body 30 of only one layer is disposed. It is possible to prevent the formation of wrinkles in the region where the light is absorbed, and to effectively ensure the effective absorption width of the absorber 30.

  Moreover, in the underpants type diaper 1 which concerns on this embodiment, the absorptive main body 3 may have the both-sides part S1 located in the width direction W outer side rather than the both-sides edge 30E of the absorber 30. FIG. Here, as shown in FIG. 2, a fixed end LSG1 extending along the longitudinal direction L and a cuff elastic member are arranged in the longitudinal direction L on both sides in the width direction W of the absorbent body 3 including both sides S1. And a leak-proof cuff LSG having a free end LSG2 standing on the skin contact surface side.

  The leak-proof cuff LSG is formed by a liquid-impermeable side sheet and a leak-proof elastic member. The end portions in the width direction W of the side sheets are folded back, and the side sheets overlap each other. Here, a plurality of leak-proof elastic materials are provided in a state where the side sheets overlap with each other in a state of extending along the longitudinal direction L.

  As shown in FIG. 2, in the part where the front waistline member 4 (or rear waistline member 5) and the arrangement region of the free end LSG2 overlap, the stretchable region A is arranged outside the free end LSG2 in the width direction W. It may be configured as follows.

  According to such a configuration, the fixed end LSG1 extending along the longitudinal direction L serving as a standing fulcrum portion of the leakage preventing cuff LSG provided on both side edges of the absorbent body 3 is pulled in the width direction W to enhance the standing property, Since the stretchable region A does not cross the standing region of the leak-proof cuff LSG, side leakage can be prevented without disturbing the standing of the leak-proof cuff LSG.

  In the underpants type diaper 1 according to the present embodiment, as shown in FIG. 2, in the front waistline member 4, the plurality of leg-hole elastic members LG have narrower intervals in the longitudinal direction L than the plurality of elastic members FG, and The other side of the outer side in the width direction including the side edges 30E at the same position as the position in the longitudinal direction L of the leg elastic member LG on the one side outside the width direction W including the side edges 30E (for example, the left side of the side edges 30E). The leg-around elastic member LG at (for example, the right side of both side edges 30E) may be disposed.

  According to such a configuration, when the wearer pulls the waist opening H2 by hand, the leg opening H1 that requires the most force to lift the absorber 30 away from the hand is reduced in the interval between the leg elastic members LG. This makes it easy to transmit the pulling force to the absorber 30, and the end portions E1 and E2 on the inner side in the width direction W of the stretchable region A are in the same position in the longitudinal direction L. Since the elongation stress by the elastic member LG can be set evenly in the direction L, the body can be fitted to the body without a sense of incongruity that makes it difficult to butt on only one side.

  In the pants-type diaper 1 according to the present embodiment, the end portions E1 and E2 on the inner side in the width direction W of the stretchable region A may be formed so as to overlap both side edges 30E of the absorbent body 30.

  According to such a configuration, when the wearer pulls the waist opening H2 with his / her hand, the width of the stretchable area A of the elastic member FG is the leg opening H1 which requires the most force to lift the absorber 30 away from the hand. By forming the end portions E1 and E2 on the inner side in the direction W on both side edges 30E of the absorber 30, the width of the non-stretchable region B can be narrowed, so that the pulling force can be easily transmitted and both side edges of the absorber 30 Since 30E is pulled by the elastic member FG, the heel can be reliably extended.

(Example of change)
Hereinafter, with reference to FIG. 4, the modified example of this invention is demonstrated paying attention to difference with the underpants type diaper 1 which concerns on the above-mentioned 1st Embodiment.

  As shown in FIG. 4, in the pants-type diaper according to this modification, at least one of the front waistline member 4 and the rear waistline member 5 has a first region R1 and a second region R2. In the example of FIG. 4, the case where the first region R1 and the second region R2 are provided only in the front waistline member 4 will be described, but the present invention is not limited to such a case.

  Here, the first region R1 is a region provided on the outer side in the width direction W including both side edges 30E along the longitudinal direction L of the region where the absorber 30 is disposed, and the second region R2 is the first region R2. This is a region provided outside the region R1 in the width direction W.

  As shown in FIG. In the pants-type diaper according to this modification, the stretchable area A1 extending in the width direction W over the first area R1 and the second area R2 and the stretchable area A2 extending in the width direction W only within the second area R2. Is provided.

  In the pants-type diaper according to the present modification example, the stretchable area between one side (for example, the left side of both side edges 30E) and the other side (for example, the right side of both side edges 30E) outside the side edges 30E in the width direction W. The end portions E1 and E2 on the inner side in the width direction W near the absorber 30 of the elastic member FG provided in A1 are shifted from each other in the longitudinal direction L. That is, the end E1 on the inner side in the width direction W and the end E2 on the inner side in the width direction W of the stretchable region A are not on the same straight line in the width direction W.

  According to this structure, it can suppress that a wrinkle arises in the area | region where the absorber 30 is arrange | positioned along the width direction W, and can prevent that a clearance gap is made between a wearer and the absorber 30. . On the other hand, in the underpants type diaper according to the present modification, between one side (for example, the left side of both side edges 30E) and the other side (for example, the right side of both side edges 30E) outside the side edges 30E in the width direction W, Ends E1 and E2 on the inner side in the width direction W of the elastic member FG provided in the stretchable region A2 may be provided so as to be shifted from each other in the width direction W, or provided so as not to be shifted from each other in the width direction W. However, there may be provided a stretchable region A1 extending in the width direction W over the first region R1 and the second region R2 and a stretchable region A2 extending in the width direction W only within the second region R2. Are alternately formed in the longitudinal direction L, so that the extension stress of the first region R1 can be reduced while the extension stress of the second region R2 can be increased, so that the stretchability is adjusted in the width direction W. can do. As a result, for example, when the pant-type diaper 1 is worn, the pant-type diaper 1 can be expanded from the first region R1 having a small elongation stress, and wrinkles are generated over a wider range including the absorber 30. The wearability of the absorbent body 30 can be made better by suppressing the absorbent body 30 so that the absorbent body 30 can be worn in a greatly expanded state.

  Moreover, in the underpants type diaper 1 which concerns on this example of a change, a predetermined space | interval may exist in the range of 5 mm-50 mm in a 1st area | region. In the first region, when the predetermined interval is smaller than 5 mm, the effect of reducing wrinkles due to the displacement of the elastic member FG in the longitudinal direction L is reduced, and wrinkles are easily formed in the width direction W, and the elongation stress is increased. For this reason, a force is required to pull up the pants-type diaper 1. On the other hand, when the predetermined interval is larger than 50 mm in the first region, the fit to the wearer's body is degraded.

 Here, in the underpants type diaper 1 according to this modification, the absorbent body 30 is disposed on the skin contact surface side of the first layer absorbent body 30A, and on the non-skin contact surface side of the first layer absorbent body. You may have the 2nd layer absorber 30B arrange | positioned. In such a case, the elastic member FG has both side edges 30E in a region where only one of the first layer absorber 30A and the second layer absorber 30B is arranged in the region where the absorber 30 is arranged. You may be comprised so that it may arrange | position outside the width direction W containing.

  According to such a configuration, the elastic member FG is provided in a region where only one of the first layer absorber 30A and the second layer absorber 30B is disposed in the region where the absorber 30 is disposed. Absorber 30 having only one layer is provided with a region where absorber 30 of only one layer is disposed, and the absorber 30 having only one layer is relatively easy to cause wrinkles while improving fit to the wearer's body. It is possible to prevent the formation of wrinkles in the arranged region and to effectively ensure the effective absorption width of the absorber 30.

  As mentioned above, although this invention was demonstrated in detail using the above-mentioned embodiment, description of this specification aims at illustration description, and does not have a restrictive meaning at all with respect to this invention. .

DESCRIPTION OF SYMBOLS 1 ... Pants-type diaper 10, 41 ... Back sheet 20, 40 ... Top sheet 3 ... Absorber body 30 ... Absorber 30A ... 1st layer absorber 30B ... 2nd layer absorber 30E ... Both sides edge 4 ... Front waistline member 5 ... Rear waistline member 50 ... Joining part A ... Stretchable region B ... Non-stretchable region FG, WG, LG ... Elastic member S1 ... Both sides LSG ... Leak-proof cuff LSG1 ... Fixed end LSG2 ... Free end H1 ... Leg opening H2 ... Waist Aperture

Claims (10)

Having a width direction and a longitudinal direction orthogonal to each other,
In the front waistline member, the rear waistline member, the absorber body extending from the front waistline member to the rear waistline member, the absorber disposed in the absorber body, the front waistline member, and the rear waistline member A pants-type diaper having a plurality of elastic members arranged at predetermined intervals in the longitudinal direction,
A waist opening and a leg opening are formed by joining both sides of the front waistline member and the rear waistline member,
In at least one of the front waistline member and the rear waistline member, an elastic region in which the elastic member can extend and contract on both sides of the outer side in the width direction, including both side edges along the longitudinal direction of the absorber. And has a non-stretchable region in which the elastic member is not stretchable on the inner side in the width direction than the both side edges of the absorber,
The position of the inner end in the width direction of the stretchable region on the one side outside the width direction including the both side edges, and the inner side in the width direction of the stretchable region on the other side outside the width direction including the both side edges. A pants-type diaper characterized in that the positions of the end portions are shifted from each other in the longitudinal direction. In at least one of the front waistline member and the rear waistline member, the elastic member and the adhesive are laminated between a pair of sheet members,
The weight of the adhesive disposed between the pair of sheet members in the non-stretchable region is configured to be lower than the weight of the adhesive disposed along the elastic member of the stretchable region. The underpants type diaper according to claim 1, wherein:   The pants-type diaper according to claim 1 or 2, wherein the predetermined interval on the both side edge sides is in a range of 5 mm to 50 mm on the outer side in the width direction including the both side edges.   The end portion on the inner side in the width direction of the stretchable region on the one side and the end portion on the inner side in the width direction of the stretchable region on the other side are alternately arranged in the longitudinal direction. The underpants type diaper as described in any one of 1-3.   The said predetermined space | interval in the one side and the other side of the said width direction outer side containing the said both-sides edge is comprised so that it may become substantially equal space | interval, The Claim 1 characterized by the above-mentioned. Pants-type diaper.   The length of the said width direction of the said expansion-contraction area is comprised so that it may differ in the said longitudinal direction in at least one side of the both sides of the said width direction outer side including the said both-sides edge. The underpants type diaper as described in any one of Claims. The absorber includes a first layer absorber disposed on the skin contact surface side, and a second layer absorber disposed on the non-skin contact surface side with respect to the first layer absorber.
The said elastic member is the said width | variety including the both-sides edge in the area | region in which only any one of the said 1st layer absorber and the said 2nd layer absorber is arrange | positioned among the area | regions where the said absorber is arrange | positioned. It is comprised so that it may be arrange | positioned in the direction outer side, The underpants type diaper as described in any one of Claims 1-6 characterized by the above-mentioned. The absorbent main body has both side portions located on the outer side in the width direction than the both side edges,
On both sides of the absorbent body including the both sides, there are a fixed end extending along the longitudinal direction, and a free end where a cuff elastic member is arranged in the longitudinal direction and stands on the skin contact surface side. Has a leak-proof cuff,
In the portion where the front waistline member or the rear waistline member overlaps with the arrangement region of the free end, the stretchable region is configured to be arranged on the outer side in the width direction than the free end. The underpants type diaper according to any one of claims 1 to 7.   Among the elastic members, a plurality of leg-holes elastic members arranged on the leg opening side have narrower intervals in the longitudinal direction than the elastic members, and the longitudinal sides of the leg-hole elastic members on the one side. The pants-type diaper according to any one of claims 1 to 8, wherein the leg-around elastic member on the other side is disposed at the same position as the direction position.   The pants-type diaper according to any one of claims 1 to 9, wherein an end portion in the width direction of the stretchable region is formed so as to overlap the both side edges.

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