JP2010264042A - Pants type disposable diaper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pants type disposable diaper in which body fluid hardly leaks from a leg opening of one leg side even though a diaper is selected according to the size around the other leg. <P>SOLUTION: The pants type disposable diaper 1A includes symmetrical leg gathers 70a, 70b of first and second elastic members 71, 72. The first and second under-crotch adhesive areas G1, G2 for fixing the first and second elastic members 71, 72 are formed in an under-crotch part C of the diaper 1A and a non-adhesive area N is formed therebetween. The elastic members 71, 72 are cut in the center part N1 of the non-adhesive area N. The elastic members 71, 72 crosses each other in one of the under-crotch part C and the intersections 73 of the same are arranged outside of first and second under-crotch adhesive areas G1, G2. The elastic members 71, 72 overlap with each other or arranged parallel in the other of the under-crotch part C. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a pants-type disposable diaper having excellent wearing feeling and leakproofness.

  2. Description of the Related Art Conventionally, a pants-type disposable diaper in which a plurality of elastic members are arranged to form a symmetrical gather in a waist opening or a pair of leg openings is known. For example, in Patent Document 1, a symmetrical leg elastic region is formed along the periphery of the leg opening, and the leg elastic region includes a plurality of first elastic regions arranged from the ventral side to the crotch. A pants-type disposable comprising one elastic member and a plurality of second elastic members arranged from the back side portion to the crotch portion, wherein the plurality of first and second elastic members overlap each other in the crotch portion Diapers are disclosed.

  Further, in Patent Document 2, an elastic member for forming a symmetrical leg gather is present mainly in the vicinity of the leg hole in a state where the elastic member is attached to the two-layer sheet material constituting the top sheet. A pants-type disposable diaper is disclosed in which only a small tail portion remains in the crotch area which does not require an elastic member.

  By the way, when a pants-type disposable diaper is used in a nursing situation, a pants-type disposable diaper having a symmetric leg elastic region (leg gather) may frequently cause a body fluid leak from one leg opening. For example, a pants-type disposable as described in Patent Document 1 or Patent Document 2 is a person whose right leg is inconvenient, the muscles of the right leg are weakened, and the thigh of the right leg is thinner than the thigh of the left leg. Even if you wear a diaper, the leg elastic area is symmetrical, so if you choose a pants-type disposable diaper according to the size around the left leg, it is easy to cause fluid leakage from the leg opening on the right leg side, If you choose a pants-type disposable diaper according to the size around the right leg, it will be difficult to wear because the body shape and left leg size do not match.

  At present, the present inventor has not found any prior art document that raises the problem of the use scene described above. However, as mentioned above, there are many people who frequently leak fluid from one leg opening, and it has the potential to have a significant impact on the care and lifestyle of such people. it is conceivable that.

JP 2003-102777 A JP-A-6-327716

  Therefore, the problem of the present invention is that even if a person whose one leg is unusually thin compared to the other leg for some reason chooses a pants-type disposable diaper according to the size of the other leg, the leg on the one leg side An object of the present invention is to provide a pants-type disposable diaper that hardly causes a body fluid leak from an opening.

  In the present invention, both sides of the ventral side and both sides of the dorsal side are joined together to form a waist opening and a pair of leg openings, which are arranged along each of the pair of leg openings. A pair of leg gathers formed by a plurality of first elastic members and a plurality of second elastic members, and the pair of leg gathers are asymmetric pant-type disposable diapers, wherein the first elastic members Is arranged in a stretched state from one leg opening of the abdominal side to the other leg opening of the abdominal side through the crotch, and the second elastic member is the back side Extending from one leg opening to the other leg opening on the back side through the crotch, and the crotch has the first opening on the one leg opening. 1st inseam bonding area which fixes 1 and 2nd elastic member And a second crotch adhesive region for fixing the first and second elastic members to the other leg opening side, and a non-between is formed between the first crotch adhesive region and the second crotch adhesive region. An adhesive region is formed, and the first and second elastic members are fixed in the first and second crotch adhesive regions, and are cut at a central portion of the non-adhesive region. And at least one second elastic member intersects each other on one leg opening side of the crotch part, and an intersection of the first and second elastic members intersects with the first crotch part. A pants-type disposable diaper that is arranged outside the leg opening portion side of the adhesive region and at least one of them overlaps or juxtaposes with each other in the second inseam adhesive region. .

  According to the pants-type disposable diaper of the present invention, even if a person whose leg is unusually thin compared to the other leg for some reason chooses the pants-type disposable diaper according to the size of the other leg, It is difficult for body fluid to leak from the leg opening on the side.

FIG. 1 is a perspective view showing a pants-type disposable diaper according to the first embodiment of the present invention. FIG. 2 is a developed plan view showing a state where the pants-type disposable diaper shown in FIG. 1 is developed and extended. FIG. 3 is an enlarged plan view of a crotch part of the pants-type disposable diaper shown in FIG. FIG. 4 is an enlarged view of the main part showing the positional relationship between the plurality of first elastic members and the plurality of second elastic members of the pants-type disposable diaper shown in FIG. 2 and the first crotch adhesive region and the second crotch adhesive region. It is a top view. FIG. 5 shows the positional relationship between a plurality of first elastic members and a plurality of second elastic members of a pants-type disposable diaper according to the second embodiment of the present invention, and a first crotch adhesive region and a second crotch adhesive region. It is a principal part enlarged plan view which shows.

  Hereinafter, a preferred first embodiment of the pants-type disposable diaper of the present invention will be described with reference to FIGS.

The pants-type disposable diaper 1A of the first embodiment (hereinafter also referred to as “diaper 1A”) is provided on both sides 6a, 6a of the ventral side A and both sides of the back side B as shown in FIGS. The portions 6b and 6b are joined to each other to form a waist opening D and a pair of leg openings E and E, and a plurality of first elastic members arranged along the pair of leg openings E and E, respectively. 71 and a pair of leg gathers 70a and 70b formed by a plurality of second elastic members 72, and the pair of leg gathers 70a and 70b are asymmetric.
As shown in FIGS. 2 to 4, the diaper 1 </ b> A is formed symmetrically with respect to a center line CL extending in the longitudinal direction of the diaper 1 </ b> A. Therefore, in the following description, the left and right symmetrical parts will be mainly described.

  The diaper 1A will be described in detail. As shown in FIG. 2, the diaper 1A includes a liquid-permeable top sheet 2, a liquid-impermeable (including water-repellent) back sheet 3, and both sheets 2 and 3. A substantially vertically long absorbent main body 5 having the absorbent body 4 formed, and an outer layer body 6 disposed on the back sheet 3 side of the absorbent main body 5 and extending over the entire outer side of the absorbent main body 5. I have. The absorbent main body 5 is bonded and fixed to the outer layer body 6. As shown in FIGS. 1 and 2, the diaper 1 </ b> A is melted by superimposing both side edges 6 a, 6 a of the ventral side A of the extended outer layer body 6 and both side edges 6 b, 6 b of the back side B on each other. A waist opening D and a pair of leg openings E, E are formed. As shown in FIGS. 1 and 2, the diaper 1A includes an abdominal side A located on the abdomen side of the wearer, a dorsal side B located on the back side of the wearer at the time of wearing, and an abdomen A and the dorsal side A crotch portion C is provided between the portion B and the portion B.

  In the diaper 1A, the absorbent body 4 has an hourglass shape (see FIGS. 1 and 3) in which the central portion is confined, and the top sheet 2 and the back sheet 3 are each rectangular as shown in FIG. The sheet 2 and the back sheet 3 are bonded to each other at a portion extending from both ends of the longitudinal direction of the absorber 4 (hereinafter referred to as “Y direction”; Y direction: a direction parallel to the center line CL). They are joined to each other at portions extending from both ends of the direction (hereinafter referred to as “X direction”. X direction: a direction perpendicular to the center line CL extending in the longitudinal direction of the disposable diaper 1A). By joining in this way, the vertically long rectangular absorbent main body 5 is formed.

  As shown in FIG. 2, the outer layer body 6 has an abdominal part A, a crotch part C, and a dorsal part B in the longitudinal direction (Y direction). As shown in FIG. 2, the outer layer body 6 extends over the entire outer region of the absorbent main body 5, and a constricted portion 6 d that is constricted inward in the longitudinal direction (Y direction) center portion on both side edges thereof. , 6d. These constricted portions 6d and 6d have a pair of leg openings when the side edge portions 6a and 6a of the ventral side portion A of the outer layer body 6 and the side edge portions 6b and 6b of the back side portion B are overlapped and fused to each other. This is a part that becomes parts E and E. As shown in FIG. 2, the outer layer body 6 in the first embodiment is formed by an outer layer sheet 61 that is the outermost surface of the pant-type absorbent article and an inner layer sheet 62 that is disposed on the inner surface side of the outer layer sheet 61. Yes.

  As shown in FIGS. 1 and 2, a first elastic member 71 and a second elastic member 72, a waist elastic member 8, and a waist elastic member 9 are disposed between the outer layer sheet 61 and the inner layer sheet 62 constituting the outer layer body 6. A pair of leg elastic regions (leg gathers) 70a and 70b, a waist elastic region (waist gather) 80, and a waistline elastic region (waistline gather) 90 are formed. As shown in FIGS. 1 and 2, the waist elastic region (waist gather) 80 has a plurality of waist elastic members 8 outward in the longitudinal direction (Y direction) from the absorbent main body 5. It is formed by arranging in a stretched state between both side edges 6a, 6b on the ventral side A and between both side edges 6b, 6b on the back side B. A waistline elastic region (a waistline gather) 90 includes a plurality of waistline elastic members 9 between the waist elastic member 8 and the constricted portion 6d of the outer layer body 6 as shown in FIGS. 6 is formed by extending in a stretched state between both side edges 6a and 6b on the ventral side A and between both side edges 6b and 6b on the back side B.

  Between the outer layer sheet 61 and the inner layer sheet 62 constituting the outer layer body 6 of the diaper 1A, as shown in FIGS. 2 and 3, an abdominal side adhesion region G3 in which an adhesive is applied in the entire region of the abdominal side part A and The back side adhesion region G4 where the adhesive is applied in the entire region of the back side portion B, and the first crotch adhesion region G1 and the second crotch adhesion region G2 where the adhesive is applied are formed in the crotch part C. . As shown in FIG. 3, a plurality of first elastic members 71 and a plurality of second elastic members 72 are fixed to the crotch part C of the diaper 1A on one leg opening E (constricted portion 6d) side. A first crotch adhesive region G1 and a second crotch adhesive region G2 for fixing the plurality of first elastic members 71 and the plurality of second elastic members 72 to the other leg opening E (constricted portion 6d) side are formed. A non-bonding region N is formed between the first crotch bonding region G1 and the second crotch bonding region G2, and the plurality of first elastic members 71 and the plurality of second elastic members 72 are the first It is fixed in the crotch adhesion region G1 and the second crotch adhesion region G2, and is cut at the central portion N1 of the non-adhesion region N. The crotch part C of the diaper 1A will be specifically described below with reference to FIGS.

  As shown in FIG. 2, the plurality of first elastic members 71 are connected to the crotch portion C from the leg opening E (the constricted portion 6 d) on one side of the ventral side A (the left side in FIG. 2 in the present embodiment). And the other leg opening E (the right side in FIG. 2 in the present embodiment) of the ventral side A is stretched over the leg opening E (the constricted part 6d). Cut at the center N1. More specifically, as shown in FIGS. 2 and 3, the plurality of first elastic members 71 are arranged from one side edge 6 a of the ventral side A (left side of FIG. 2) to one of the ventral side A (see FIG. 2). 2 (left side) 2 along the leg opening E (constricted part 6d), passes through the crotch part C, and along the leg opening part E (constricted part 6d) on the other side of the ventral side A (right side in FIG. 2). In the crotch part C, the center part (center line) of a non-adhesive region N (described later) that is arranged in an extended state until reaching the other side edge 6a of the ventral side part A (right side in FIG. 2) and no adhesive is applied. The portion including CL is cut at N1.

  As shown in FIG. 2, the plurality of second elastic members 72 pass from the leg opening E (constricted portion 6 d) on one side (left side in FIG. 2) of the back side portion B through the crotch C to the back side portion B. The other leg opening (the right side in FIG. 2) is extended in a stretched state and is cut at the central portion N1 of the non-bonding region N of the crotch C. More specifically, as shown in FIGS. 2 and 3, the plurality of second elastic members 71 are arranged on one side edge 6 a of the back side portion B (left side in FIG. 2), similarly to the first elastic member 71. To the back side B (left side in FIG. 2) of the leg opening E (constricted part 6d), passing through the crotch C and the other side of the back side B (right side of FIG. 2) leg opening A non-adhesive region in which the adhesive is not applied in the crotch part C, which extends along the part E (the constricted part 6d) to the side edge part 6a on the other side (the right side in FIG. 2) of the back side part B. N is cut at the central portion N1.

  In the first crotch adhesion region G1 and the second crotch adhesion region G2 of the outer layer body 6 of the diaper 1A, a plurality of first elastic members 71 and a plurality of second elastic members 72 are fixed. As shown in FIG. 3, the first crotch adhesive region G1 and the second crotch adhesive region G2 are formed apart from the ventral adhesive region G3 and the back adhesive region G4 in the longitudinal direction (Y direction) of the diaper 1A. In the width direction (X direction) of the diaper 1 </ b> A, the diaper 1 </ b> A is disposed on the inner side of the opening edge of the leg opening E (the constricted portion 6 d). As shown in FIG. 3, a non-adhesive region N to which no adhesive is applied is formed between the first crotch adhesive region G1 and the second crotch adhesive region G2.

The first crotch adhesive region G1 and the second crotch adhesive region G2 are each rectangular as shown in FIGS. As shown in FIGS. 2 and 3, the first crotch adhesive region G1 and the second crotch adhesive region G2 are formed symmetrically with respect to the center line CL of the diaper 1A and have the same shape. Hereinafter, the first crotch adhesion region G1 will be described.
As shown in FIG. 2, the first crotch adhesive region G1 has a length L1 in the longitudinal direction (Y direction) at the crotch part C of the diaper 1A. It is preferable that the elastic member 72 is wider than the arrangement region of the elastic member 72. Specifically, the elastic member 72 is preferably 10 mm to 50 mm, and the length L1 in the longitudinal direction (Y direction) and the maximum distance in the longitudinal direction (Y direction) of the diaper 1A. The ratio to L2 (L1 / L2) is preferably 1/54 to 5/49, and more preferably 3/54 to 3/49. 2, the width W1 in the width direction (X direction) of the first crotch adhesive region G1 is preferably 25 mm to 75 mm, and the width W1 in the width direction (X direction) and the crotch of the diaper 1A The ratio (W1 / W2) to the minimum distance W2 in the width direction (X direction) in the portion C is preferably 1/16 to 5/22, and more preferably 1/8 to 5/33.

  As shown in FIG. 3, the first crotch adhesive region G1 has an outer edge g1 on the leg opening E (constricted part 6d) side along an outer edge 41 on the leg opening E (constricted part 6d) side of the absorber 4. Are arranged. The shape of the outer edge g1 of the first inseam adhesion region G1 corresponds to the shape of the outer edge 41 of the absorbent body 4 as shown in FIG. The distance between the outer edge g1 of the first inseam adhesion region G1 and the outer edge 41 of the absorbent body 4 is preferably 0 mm to 50 mm, and preferably 0 mm to 20 mm, from the viewpoint of imparting the lifting effect of the absorbent body to the elastic body. Is more preferable.

  The non-adhesion region N between the first crotch adhesion region G1 and the second crotch adhesion region G2 will be described in detail. As shown in FIG. 3, the width direction of the non-adhesion region N to which no adhesive is applied ( The width W3 in the X direction is preferably 10 mm to 70 mm, and the ratio of the width W3 in the width direction (X direction) and the minimum distance W2 in the width direction (X direction) in the crotch C of the diaper 1A (W3 / W2) is preferably 1/18 to 7/18, more preferably 2/9 to 1/3.

  As shown in FIGS. 2 and 3, the diaper 1 </ b> A has an outer layer sheet 61 on the abdominal side A and an inner layer sheet 62 on the abdominal side A fixed in the abdominal side adhesion region G <b> 3. Between the sheet 61 and the inner layer sheet 62 of the ventral side A, the waist elastic member 8 of the ventral side A, the waist elastic member 9 of the ventral side A, and a part of the first elastic member 71 are fixed. As shown in FIGS. 2 and 3, the diaper 1 </ b> A has an outer layer sheet 61 on the back side portion B and an inner layer sheet 62 on the back side portion B fixed to each other in the back side adhesion region G <b> 4. A part of the waist elastic member 8 of the back side B, the waist elastic member 9 of the back side B, and the second elastic member 72 are fixed between the outer layer sheet 61 and the inner layer sheet 62 of the back side B. Yes. 2 and 3, the diaper 1A has an outer layer sheet 61 at the crotch C and an inner layer sheet 62 at the crotch C fixed in the first crotch adhesive region G1 and the second crotch adhesive region G2. A part of the first elastic member 71 and a part of the second elastic member 72 disposed on the crotch part C are fixed between the outer layer sheet 61 of the crotch part C and the inner layer sheet 62 of the crotch part C. The first elastic member 71 and the second elastic member 72 arranged in the crotch part C are cut at the central portion N1 of the non-adhesive region N as shown in FIGS.

  By cutting the plurality of first elastic members 71, the plurality of first elastic members 71 are, as shown in FIGS. 2 to 4, leg opening portions on one side of the ventral side A (left side in FIG. 2). In E (bending portion 6d), a gather forming portion 71a disposed along the leg opening E (bending portion 6d), and a gather forming extending portion 71b extending from the gather forming portion 71a toward the center line CL. It becomes. Similarly, in the leg opening E (constricted part 6d) on the other side of the ventral side A (the right side in FIG. 2), the plurality of first elastic members 71 have leg openings as shown in FIGS. A gather forming portion 71a arranged along the portion E (the constricted portion 6d) and a gather forming extension portion 71b extending from the gather forming portion 71a toward the center line CL.

  By cutting the plurality of second elastic members 72, as with the first elastic member 71, the plurality of second elastic members 72 can be connected to one of the back side portions B (see FIG. 2 to FIG. 4). In the leg opening E (constricted part 6d) on the left side of FIG. 2, the gather forming part 72a arranged along the leg opening E (constricted part 6d) and the gather forming part 72a toward the center line CL. It becomes the gather formation extension part 72b extended. Similarly, in the leg opening E (constricted part 6d) on the other side of the back side B (the right side in FIG. 2), the plurality of second elastic members 72 have leg openings as shown in FIGS. A gather forming portion 72a disposed along the portion E (the constricted portion 6d) and a gather forming extending portion 72b extending from the gather forming portion 72a toward the center line CL.

  The diaper 1A has a leg opening by a gather forming portion 71a and a gather forming portion 72a arranged along one leg opening E (the constricted portion 6d) of one of the ventral side A and the back side B (left side in FIG. 2). A leg elastic region (leg gather) 70a which is closed in a ring shape along the periphery of the portion E and further extends from the gather forming portion 71a and the gather forming portion 72a toward the center line CL by the gather forming extensions 71b and 72b. Has been. Similarly, the diaper 1A includes a gather forming portion 71a and a gather forming portion 72a disposed along the leg opening E (the constricted portion 6d) on the other side (the right side in FIG. 2) of the ventral side A and the back side B. Leg elastic regions (leg gathers) that are closed annularly along the periphery of the leg opening E, and further extended toward the center line CL from the gather forming portion 71a and the gather forming portion 72a by the gather forming extension portions 71b and 72b. 70b is formed.

  The gather forming extension 71b of the first elastic member 71 and the gather forming extension 72b of the second elastic member 72 are formed by cutting the stretched first elastic member 71 or the stretched second elastic member 72. Therefore, in the 1st crotch adhesion area | region G1 and the 2nd crotch adhesion area | region G2, it is adhering in the expansion | extension state, The part extended to the centerline CL side from the 1st crotch adhesion area | region G1 and the 2nd crotch adhesion area | region G2. (The portion of the non-adhesion region N between the first crotch adhesion region G1 and the second crotch adhesion region G2) includes a portion that has returned to the natural state by snapback.

  As described above, the leg elastic region (leg gather) 70a of the diaper 1A has the gather forming portion 71a and the gather forming portion 72a arranged along the leg opening E (constricted portion 6d) on one side (left side in FIG. 2). And the gather forming extensions 71b and 72b extending from them, the leg elastic region (leg gather) 70b of the diaper 1A is the leg opening E (constriction) on the other side (the right side in FIG. 2). A gather forming portion 71a and a gather forming portion 72a arranged along the portion 6d), and gather forming extensions 71b and 72b extending from the gather forming portion 71a and the gather forming portion 72a, and a leg elastic region (leg gather) 70a; This is different from the leg elastic region (leg gather) 70b. The leg elastic region (leg gather) 70a and the leg elastic region (leg gather) 70b are formed asymmetrically in particular in the following points. This will be specifically described below.

The plurality of first elastic members 71 and the plurality of second elastic members 72 are, as shown in FIGS. 3 and 4, leg opening E (constricted portion 6d) on one side of crotch C (left side in FIG. 2). On the side, at least one piece intersects each other, and the intersection 73 where the first elastic member 71 and the second elastic member 72 intersect is the leg opening E (narrow portion 6d) side of the first crotch adhesive region G1. It is arranged outside. The plurality of first elastic members 71 and the plurality of second elastic members 72 are, as shown in FIGS. 2 and 3, the leg opening E (constricted portion 6d) on the other side of the crotch C (the right side in FIG. 2). On the side (second inseam adhesion region G2), at least one of them overlaps with each other or is juxtaposed.
The positional relationship between the plurality of first elastic members 71 and the plurality of second elastic members 72 and the first crotch adhesive region G1 and the second crotch adhesive region G2 will be described in more detail.

  1 to 5 first elastic members 71 are preferably arranged, and the first elastic member 71 of the first embodiment is formed of three elastic members as shown in FIGS. ing. As shown in FIGS. 2 to 4, the three first elastic members 71 are arranged at substantially equal intervals so as not to overlap each other. As shown in FIGS. 3 and 4, the three first elastic members 71 of the first embodiment include one leg opening E (the constricted portion 6 d) on the ventral side A (left side in FIG. 2) and the ventral side. A first elastic member 71A disposed closest to the leg opening E (constricted portion 6d) on the other side (right side in FIG. 2) of the portion A, and a first elastic member 71C disposed farthest away The first elastic member 71B is disposed between the first elastic member 71A and the first elastic member 71C.

  One to five second elastic members 72 are preferably arranged, and the second elastic member 72 of the first embodiment is similar to the first elastic member 71 as shown in FIGS. It is formed from three elastic members. As shown in FIGS. 2 to 4, the three second elastic members 72 are arranged at substantially equal intervals so as not to overlap each other, like the first elastic member 71. As shown in FIGS. 3 and 4, the three second elastic members 72 of the first embodiment include one leg opening E (constricted portion 6 d) on the back side B (left side in FIG. 2) and the back side. A second elastic member 72A disposed closest to the leg opening E (constricted portion 6d) on the other side (right side in FIG. 2) of the portion B; The second elastic member 72A is disposed between the second elastic member 72A and the second elastic member 72C.

  As shown in FIG. 4, the diaper 1 </ b> A has a first elastic member among the three first elastic members 71 in the leg opening E (constricted portion 6 d) on one side of the crotch part C (left side in FIG. 2). 71A intersects with each of the three second elastic members 72A, 72B, 72C, and three intersections 73AA (A on the front side of the intersection 73AA means A of the first elastic member 71A and A on the rear side) Means A of the second elastic member 72A.), 73AB, 73AC. Further, as shown in FIG. 4, the diaper 1B has a first elasticity among the three first elastic members 71 in the leg opening E (constricted part 6d) on one side of the crotch part C (left side in FIG. 2). The member 71B intersects with each of the two second elastic members 72A and 72B, and has two intersections 73BA and 73BB. As shown in FIG. 4, the diaper 1 </ b> B has a first elastic member 71 </ b> C among the three first elastic members 71 in one leg opening E (constricted portion 6 d) of the crotch part C (left side in FIG. 2). However, it intersects with one second elastic member 72A and has one intersection 73CA.

  In the leg opening E (constricted portion 6d) on one side of the crotch portion C (left side in FIG. 2), as shown in FIG. 4, three first elastic members 71A, 71B, 71C and three second elastic members are provided. Of the five intersections 73AA, 73AB, 73AC, 73BA, 73BB, 73, 73CA where the members 72A, 72B, 72C intersect, the intersection 73CA located closest to the center N1 side of the crotch C is shown in FIG. As described above, the first crotch adhesion region G1 is disposed outward on the leg opening E (constricted portion 6d) side.

  In one leg opening E (constricted part 6d) of the crotch part C (left side in FIG. 2), the three first elastic members 71A, 71B, 71C and the three second elastic members 72A, 72B, 72C are As shown in FIG. 4, they do not overlap and do not intersect, except at six intersections 73AA, 73AB, 73AC, 73BA, 73BB, 73, 73CA that intersect each other. As shown in FIG. 4, each of the three first elastic members 71A, 71B, 71C and the three second elastic members 72A, 72B, 72C has a leg opening E (constricted portion) in the first crotch adhesion region G1. 6d) are arranged from the side toward the center line CL, and are arranged in a wide range substantially in parallel with a substantially equal interval therebetween.

  On the other hand, in the leg opening E (constricted part 6d) on the other side (the right side in FIG. 2) of the crotch part C of the diaper 1A, as shown in FIG. The elastic member 71A intersects with each of the three second elastic members 72A and 72B, has two intersections 73AA and 73AB, and comes in contact with the remaining one second elastic member 72C. ing. Further, as shown in FIG. 4, the diaper 1A has a first elasticity among the three first elastic members 71 in the leg opening E (constricted portion 6d) on the other side of the crotch part C (right side in FIG. 2). The member 71B intersects with one second elastic member 72A, has one intersection 73BA, and is juxtaposed after contacting with one second elastic member 72. Further, as shown in FIG. 4, the diaper 1A has a first elasticity among the three first elastic members 71 in the leg opening E (constricted portion 6d) on the other side of the crotch part C (right side in FIG. 2). The member 71C is juxtaposed after being in contact with one second elastic member 72A.

  At the other leg opening E (constricted portion 6d) of the crotch portion C of the diaper 1A, as shown in FIG. 4, three first elastic members 71A, 71B, 71C and three All of the three intersections 73AA, 73AB, 73BA where the second elastic members 72A, 72B, 72C intersect are arranged on the outer side of the second crotch adhesive region G2 on the leg opening E (constricted portion 6d) side. Yes.

  In the leg opening E (constricted portion 6d) on the other side of the crotch C (the right side in FIG. 2), the three first elastic members 71A, 71B, 71C and the three second elastic members 72A, 72B, 72C are As shown in FIG. 4, in the second inseam adhesion region G2, the leg opening E (constricted portion 6d) in a state where the first elastic member 71A and the second elastic member 72C are juxtaposed as a single elastic member. The first elastic member 71B and the second elastic member 72B are arranged side by side like a single elastic member from the side toward the center line CL, and the center line CL from the leg opening E (constricted portion 6d) side. The first elastic member 71C and the second elastic member 72A are arranged side by side like a single elastic member, and are arranged from the leg opening E (constricted portion 6d) side toward the center line CL. They are almost equally spaced from each other They are arranged in a row.

The material for forming the diaper 1A of the first embodiment will be described.
As the surface sheet 2, the back sheet 3, and the absorbent body 4, each can be used without particular limitation as long as it is usually used for absorbent articles such as disposable diapers. For example, a hydrophilic and liquid-permeable non-woven fabric can be used as the top sheet 2, and a liquid-impermeable or water-repellent resin film or a laminate of a resin film and a non-woven fabric is used as the back sheet 3. be able to. As the absorbent body 4, an absorbent body composed of absorbent polymer particles and fiber material and covered with tissue paper (not shown) can be used.

  As the outer layer sheet 61 constituting the outer layer body 6 and the inner layer sheet 62 of the back side portion B, any sheet can be used without particular limitation as long as it is normally used for absorbent articles such as disposable diapers. For example, as the outer layer sheet 51 and the inner layer sheet 52, a water-repellent nonwoven fabric or the like can be used.

  The waist elastic member 8, the waistline elastic member 9, the first elastic member 71, and the second elastic member 72 can be used without particular limitation as long as they are usually used in absorbent articles such as disposable diapers. For example, a stretchable material made of natural rubber, polyurethane, polystyrene-polyisoprene copolymer, polystyrene-polybutadiene copolymer, polyethylene-α olefin copolymer such as ethyl acrylate-ethylene, or the like can be used.

The expansion ratio of the first elastic member 71 and the second elastic member 72 before cutting is 160% from the viewpoint of achieving both troubles such as elastic traces on the skin and no gap around the legs. It is preferably ˜250%, more preferably 200% to 240%. The expansion magnification here is a value obtained from the following equation when the length when not stretched is A (mm) and the length when stretched is B (mm).
Stretch magnification (%) = (B / A) × 100

  The adhesive applied to each of the first crotch adhesive region G1, the second crotch adhesive region G2, the abdomen adhesive region G3, and the back adhesive region G4 is usually used for absorbent articles such as disposable diapers. For example, it can be used without particular limitation. For example, hot melt adhesives such as styrene-isoprene-styrene block copolymer (SIS), styrene-butadiene-styrene block copolymer (SBS), styrene-ethylene-butylene-styrene copolymer (SEBS), etc. A gel-like pressure-sensitive adhesive or the like used in the agent can be used. Examples of the adhesive application pattern include a stripe shape, a spiral shape, a solid coating, and a dot shape.

The amount of adhesive applied in each of the first crotch adhesive region G1 and the second crotch adhesive region G2 is such that the elastic body is held along the leg hole while firmly fixing the end of the elastic body, so that the entire circumference around the leg In view of the influence of the elastic body, it is preferable that the amount of adhesive applied in the abdomen-side adhesive region G3 or the amount of adhesive applied in the back-side adhesive region G4 is larger. The coating amount of the adhesive in the first crotch bonding areas G1 and the second crotch adhesive region G2, it is preferably ^{2.5g / m 2 ~20g / m 2} , a 10g / m ² ~16g / m ² Is more preferable. On the other hand, the amount of adhesive applied in the ventral adhesive region G3 or the amount of adhesive applied in the back adhesive region G4 is preferably 1.0 g / m ^{2 to} 5.0 g / m ² , and 2.0 g / m ^2. it is more preferably m ² ~4.0g / m ^2.

  Various known cutting means can be used for cutting at the central portion N1 of the non-bonded region N of the first elastic member 71 and the second elastic member 72. For example, a pinch cutter, a rotary die cutter, a heat seal cutter, an ultrasonic cutter, a water jet cutter, or the like can be used.

The effect at the time of using the diaper 1A of 1st Embodiment of this invention mentioned above is demonstrated.
As shown in FIGS. 3 and 4, the diaper 1A has three first elastic members 71A, 71B, 71C and a leg opening E (constricted portion 6d) on one side of the crotch part C (left side in FIG. 2). The three second elastic members 72a, 72B, 72C are arranged at five intersections 73AA, 73AB, 73AC, 73BA, 73BB on the outer side of the first crotch adhesion region G1 on the leg opening E (constricted portion 6d) side. 73, 73CA, and in the first inseam adhesion region G1, none of the elastic members 71, 72 cross each other and are widely distributed with a gap therebetween. On the other hand, as shown in FIGS. 3 and 4, in the second crotch adhesion region G2 of the leg opening E (constricted portion 6d) on the other side of the crotch C (the right side in FIG. 2), the first elastic member 71A and the first elastic member 71A The second elastic member 72C is arranged in a juxtaposed manner as one elastic member, the first elastic member 71B and the second elastic member 72B are arranged in a juxtaposed state as one elastic member, The first elastic member 71C and the second elastic member 72A are arranged side by side like a single elastic member, and they are arranged substantially in parallel with each other at substantially equal intervals. Accordingly, the diaper 1A in use has an elastic member arranged in a wide range without overlapping each other in the first crotch adhesive region G1, so that the wearing feeling is improved and the second crotch adhesive region G2 is used. 1, the first elastic member 71 and the second elastic member 72 are arranged side by side like a single elastic member, and the contraction force of the elastic member is improved. It can pull up rather than adhesion field G1. Therefore, a person whose right leg is unusually thinner than the left leg for some reason is matched with the size of the leg circumference of the left leg where the leg gather 70a on the left side of the first inseam adhesion region G1, that is, the left side in FIG. Even when a pants-type disposable diaper is selected, it is difficult for body fluid to leak from the leg opening of the right leg where the second leg gathering region G2 side, that is, the right leg gather 70b in FIG.

  As shown in FIGS. 3 and 4, the diaper 1 </ b> A has a first elastic member 71 </ b> A and a second elastic member 72 </ b> C, a first elastic member 71 </ b> B and a second elastic member 72 </ b> B, and a second elastic member in the second inseam adhesion region G <b> 2. In the state where the first elastic member 71C and the second elastic member 72A are juxtaposed like one elastic member, they are arranged at substantially equal intervals and substantially in parallel. Despite the improvement, the absorbent body 4 is unlikely to be broken and the crotch portion C is less likely to wrinkle, so that the feeling of wearing is improved.

  Further, as shown in FIG. 3, in the diaper 1A, the non-adhesive region N is formed between the first crotch adhesive region G1 and the second crotch adhesive region G2, so that the air permeability of the crotch portion C is improved. Can prevent diaper rash and the like.

  Further, as shown in FIG. 3, the diaper 1A includes a first crotch adhesive region G1 and a second crotch adhesive region G2 in the longitudinal direction (Y direction) of the diaper 1A. In the width direction (X direction) of the diaper 1 </ b> A, and is arranged on the inner side of the opening edge of the leg opening E (the constricted portion 6 d). In the diaper 1A, as shown in FIG. 3, a non-adhesive region N is formed between the first crotch adhesive region G1 and the second crotch adhesive region G2. Thus, since the diaper 1A has the area | region where the adhesive agent is not apply | coated, it can reduce cost.

Next, the disposable diaper of 2nd Embodiment of this invention is demonstrated based on FIG.
About the disposable diaper 1B of 2nd Embodiment, a different point from the disposable diaper 1A of 1st Embodiment is demonstrated. The point which is not demonstrated especially is the same as that of 1 A of disposable diapers of 1st Embodiment, and description of 1 A of disposable diapers of 1st Embodiment is applied suitably.

  The disposable diaper 1B of the second embodiment (hereinafter also referred to as “diaper 1B”) is as shown in FIG. 5 in the leg opening E (constricted part 6d) on one side of the crotch part C (left side in FIG. 2). In addition, the first elastic member 71A and the second elastic member 72A intersect each other at one place, and an intersection 73AA where the first elastic member 71A and the second elastic member 72A intersect is a leg of the first inseam adhesion region G1. It is arranged outward on the opening E (constricted portion 6d) side (side away from the center line CL). The first elastic members 71A, 71B, 71C and the second elastic members 72A, 72B, 72C do not overlap and do not intersect except at the intersection 73AA. As shown in FIG. 5, each of the three first elastic members 71A, 71B, 71C and the three second elastic members 72A, 72B, 72C has a leg opening E (constricted portion) in the first crotch adhesion region G1. 6d) are arranged from the side toward the center line CL, and are arranged substantially in parallel with a space therebetween.

  On the other hand, in the leg opening E (constricted part 6d) on the other side (the right side in FIG. 2) of the crotch part C of the diaper 1B, as shown in FIG. The elastic member 71A intersects each of the three second elastic members 72A and 72B, has two intersections 73AA and 73AB, and overlaps after contacting the remaining one second elastic member 72C. . Further, as shown in FIG. 4, the diaper 1B has a first elasticity among the three first elastic members 71 in the leg opening E (constricted portion 6d) on the other side of the crotch C (the right side in FIG. 2). The member 71B intersects with one second elastic member 72A, has one intersection 73BA, and overlaps after contacting with one second elastic member 72. Further, as shown in FIG. 5, the diaper 1B has a first elasticity among the three first elastic members 71 in the leg opening E (the constricted portion 6d) on the other side of the crotch C (the right side in FIG. 2). The member 71C overlaps with the second elastic member 72A after contacting it. Note that the term “overlapping” includes not only the state in which the elastic members 71 and 72 are coincident with each other but also the state in which the respective parts are overlapping with each other, as shown in FIG.

  At the other leg opening E (constricted part 6d) of the crotch part C of the diaper 1B, as shown in FIG. 5, three first elastic members 71A, 71B, 71C and three All of the three intersections 73AA, 73AB, 73BA where the second elastic members 72A, 72B, 72C intersect are arranged on the outer side of the second crotch adhesive region G2 on the leg opening E (constricted portion 6d) side. Yes.

  In the leg opening E (constricted portion 6d) on the other side of the crotch C (the right side in FIG. 2), the three first elastic members 71A, 71B, 71C and the three second elastic members 72A, 72B, 72C are As shown in FIG. 5, in the second inseam adhesion region G2, the leg opening E (constricted portion 6d) in a state where the first elastic member 71A and the second elastic member 72C overlap each other like a single elastic member. The first elastic member 71B and the second elastic member 72B are overlapped like a single elastic member from the side toward the center line CL, and the center line CL from the leg opening E (constricted portion 6d) side. The first elastic member 71C and the second elastic member 72A are arranged like a single elastic member and are arranged from the leg opening E (constricted portion 6d) side toward the center line CL. They are almost equally spaced from each other They are arranged in a row.

The effect at the time of using the disposable diaper 1B of 2nd Embodiment of this invention mentioned above is demonstrated.
The disposable diaper 1B of the second embodiment has the same effects as the disposable diaper 1A of the first embodiment. Hereinafter, effects different from those of the deployable disposable diaper 1A of the first embodiment will be described.

  Disposable diaper 1B of 2nd Embodiment can change the force which lifts the absorber 4 in the crotch part C on either side. In other words, if the left and right leg thicknesses are different for some reason, the left and right leg lengths are different and the body is tilted, or if you can only sleep sideways, the left or right absorbent body 4 is placed on your skin. This is effective when you want to lift and stick.

  The disposable diaper of this invention is not restrict | limited at all to the disposable diaper 1A of the above-mentioned 1st Embodiment, and the disposable diaper 1B of 2nd Embodiment, It can change suitably.

  For example, in the disposable diaper 1A of the first embodiment and the disposable diaper 1B of the second embodiment, as shown in FIGS. 4 and 5, the leg opening E ( On the side of the constricted portion 6d), the first elastic member 71 and the second elastic member 72 are juxtaposed or overlapped, but at least one piece may be juxtaposed or overlapped with each other. A combination thereof may also be used.

  Moreover, in the above-mentioned diaper 1A and diaper 1B, as shown in FIGS. 4 and 5, a non-adhesive region N where no adhesive is applied between the first crotch adhesive region G1 and the second crotch adhesive region G2. However, a small amount of adhesive may be applied so that the stretched first elastic member 71 or the stretched second elastic member 72 cannot be fixed.

  Further, as shown in FIG. 3, the diaper 1A described above includes a first crotch adhesive region G1 and a second crotch adhesive region G2 in the longitudinal direction (Y direction) of the diaper 1A. Although it is separated from the region G and no adhesive is applied to the separated portion, a smaller amount of adhesive is applied than the amount of adhesive applied in the first crotch adhesive region G1 and the second crotch adhesive region G2. It may be applied. Similarly, in the diaper 1A, as shown in FIG. 3, the first crotch adhesive region G1 and the second crotch adhesive region G2 are formed in the leg opening E (constricted portion 6d) in the width direction (X direction) of the diaper 1A. Although it is distribute | arranged inside the opening edge and the adhesive agent is not apply | coated to the leg opening part E (constriction part 6d) side from the 1st crotch adhesion area | region G1 and the 2nd crotch adhesion area | region G2, 1st crotch adhesion | attachment is carried out. A smaller amount of adhesive may be applied than the amount of adhesive applied in the region G1 and the second inseam adhesion region G2.

  Further, as shown in FIG. 2, the diaper 1 </ b> A and the diaper 1 </ b> B described above include the outer layer body 6 composed of two sheets of the outer layer sheet 61 and the inner layer sheet 62. No pants-type disposable diaper may be used, and even if the outer layer body 6 is provided, the outer layer body 6 may not be formed from two sheets.

1A, 1B Pants-type disposable diaper 2 Top sheet 3 Back sheet 4 Absorber 41 Outer edge 5 on the leg opening E (bending portion 6d) side Absorbent body 6 Outer layer body 61 Inner layer sheet 62 Outer layer sheet 6d Bending portion 70a, 70b Leg elasticity Area (Leg Gather)
71 (71A, 71B, 71C) 1st elastic member 72 (72A, 72B, 72C) 2nd elastic member 71a, 72a Gather formation part 71b, 72b Gather formation extension part 73 (73AA, 73AB, 73AC, 73BA, 73BB, 73CA ) Intersection 8 Waist elastic member 80 Waist elastic region (waist gather)
9 Girth elastic member 90 Girth elastic region (gather gather)
A back side part, B ventral side part, C crotch part, D waist opening part, E leg opening part G1 first crotch adhesion area g1 outer edge G2 on leg opening part E (constriction part 6d) side second crotch adhesion area, G3 Ventral bonding area, G4 Dorsal bonding area N Non-bonding area N1 Center

Claims (5)

The both sides of the abdomen and the sides of the dorsal side are joined together to form a waist opening and a pair of leg openings, and a plurality of second openings arranged along each of the pair of leg openings. A pair of leg gathers formed by one elastic member and a plurality of second elastic members, and the pair of leg gathers are asymmetric pants-type disposable diapers,
The first elastic member is arranged in an extended state from the one leg opening on the abdominal side, through the crotch, to the other leg opening on the abdominal side,
The second elastic member is arranged in an extended state from one leg opening portion of the back side portion through the crotch portion to the other leg opening portion of the back side portion,
A first crotch adhesive region for fixing the first and second elastic members to one leg opening side, and the first and second elastic members to the other leg opening side are fixed to the crotch part. A second crotch adhesive region is formed, a non-adhesive region is formed between the first crotch adhesive region and the second crotch adhesive region, and the first and second elastic members are Fixed in the first and second inseam adhesion areas, and cut in the center of the non-adhesion area;
A plurality of the first and second elastic members intersect each other at one leg opening portion side of the crotch part, and an intersection at which the first and second elastic members intersect. Are disposed on the outer side of the first crotch adhesive region on the leg opening side, and in the second crotch adhesive region, at least one pants-type disposable diaper that overlaps or juxtaposes with each other . The plurality of first elastic members and the plurality of second elastic members intersect with each other at a plurality of locations on one leg opening side of the crotch part,
Of the plurality of intersections where the first elastic member and the second elastic member intersect, the intersection located closest to the center of the crotch is on the leg opening side of the first crotch adhesion region. The pants-type disposable diaper according to claim 1, which is arranged outward.   Each of the application amounts of the adhesive in the first and second crotch adhesion regions includes the application amount of the adhesive that fixes the plurality of first elastic members on the abdomen, or the plurality of second elastic members. The underpants-type disposable diaper according to claim 1 or 2, wherein the amount is larger than the amount of adhesive applied on the back side.   The outer edge on the leg opening portion side of each of the first and second crotch adhesion regions is arranged along the outer edge on the leg opening portion side of an absorbent body provided in the pant-type disposable diaper. A pants-type disposable diaper according to any one of the above. The pants-type disposable diaper includes a topsheet, a backsheet, and an absorbent main body having an absorbent body interposed between both sheets, and is disposed on the backsheet side of the absorbent main body and on the entire outer side of the absorbent main body. A pants-type disposable diaper provided with an outer layer body extending over,
The outer layer body is formed from an outer layer sheet which is the outermost surface of the pants-type disposable diaper, and an inner layer sheet disposed on the inner surface side of the outer layer sheet,
The plurality of first and second elastic members are each a pants-type disposable diaper according to any one of claims 1 to 4, which is disposed between the outer layer sheet and the inner layer sheet.

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