JP5901174B2 - Disposable wearing items - Google Patents

Description

  The present invention relates to disposable wearing articles, and more specifically, disposable disposable diapers, disposable toilet training pants, disposable incontinence pants, disposable sanitary pants, etc. that are used by connecting the front and rear waist regions with a connecting member. It relates to worn articles.

  2. Description of the Related Art Conventionally, so-called open-type disposable wearing articles that are used by connecting front and rear waist regions with fastening members are known. For example, Patent Document 1 discloses a disposable diaper having a liquid-permeable surface sheet, a liquid-impermeable leak-proof sheet, a liquid-retaining absorbent body, and side flaps formed on both sides of the absorbent body. Is disclosed. A fastening tape is provided on the side flap, and the back side portion and the abdominal side portion are connected to each other by the fastening tape, so that a pants-shaped diaper can be obtained. A flap portion elastic member extending in the vertical direction is attached to the side flap, and the side flap is elasticized in the vertical direction. Patent Document 2 discloses a disposable diaper having an absorbent main body and a flap portion extending outward in the width direction of the absorbent main body. A fastening tape is provided in the flap portion, and the back side and the abdomen side of the diaper are connected by this fastening tape, so that a pants-shaped diaper can be obtained. In the flap part, a plurality of flap elastic members are arranged along the width direction of the diaper.

JP 2001-212175 A (JP2001-212175A) JP2008-161527A (JP2008-161527A)

  In the disposable diaper described in Patent Documents 1 and 2 described above, by attaching an elastic member extending in the vertical direction or the horizontal direction to the side flap, the side flap is in close contact with the wearer's body so that the side flap does not turn over. Yes. Such a diaper has a problem that when the absorber absorbs urine or the like and becomes heavier, the crotch portion of the diaper is lowered and the entire diaper is lowered.

  An object of the present invention is to provide a disposable wearing article that does not slide down even when urination or the like occurs.

The present invention has a vertical direction and a horizontal direction, the body side and the non-body side that is the opposite side, the first waist region that is one of the front and rear waist regions, and the second waist region that is the other A chassis having a crotch region located between the first and second waist regions, a virtual lateral center line that bisects the dimension in the longitudinal direction, and a water absorption absorption located at least in the crotch region The present invention relates to an improvement of a disposable wearing article including a body, a side flap located on the laterally outer side of the absorbent body, and a connecting means attached to the second waist region and connecting the first and second waist regions to each other. .
The present invention provides the disposable wearing article, wherein the side flap includes a second side flap located in the second waist region and a crotch side flap located in the crotch region, and the connecting means includes the first A fixing portion fixed to the two side flaps, and an extending portion extending outward in the lateral direction from the fixing portion and connectable to the first waist region, the fixing portion being an inner portion extending in the longitudinal direction An imaginary line defined by an outer edge and front and rear end edges extending in the lateral direction, connecting an intersection of the outer edge and the front end edge, and an intersection of the side edge of the absorber and the virtual lateral center line, Located on the second side flap and the crotch side flap, the bending rigidity in the longitudinal direction of the second side flap is 0.10 to 0.20 N / m, and in the lateral direction Lower rigidity Ri 0.05~0.10N / m der, the chassis has a topsheet positioned on the body side, and a back sheet positioned on said non-body side, on the between the sheets The leak prevention sheet is attached, and the back sheet and the leak prevention sheet are joined to each other by the joining means, and the back sheet and the leak prevention sheet are mutually attached to the laterally outer side of the joining means. A non-bonded region that is not bonded is formed, and is located on the opposite side of the surface of the leak-proof sheet that faces the back sheet, and is positioned at least on the crotch side flap in a position that overlaps the non-bonded region. A side flap elastic body that can contract in the stretched state in the longitudinal direction is attached .

  According to one or more embodiments of the present invention, in particular, the bending rigidity in the longitudinal direction of the second side flap and the crotch side flap is 0.10 to 0.20 N / m, and the bending rigidity in the lateral direction is 0.05. Since it is ˜0.10 N / m, the second side flap and the crotch side flap are difficult to bend. Moreover, since the edge part of an imaginary line is located on a 2nd side flap, it is hold | maintained reliably by a wearer's waist by connecting a back-and-front waist area with the connection means located in a 2nd side flap. Can do. Therefore, the worn article is difficult to slide down.

The perspective view which shows the state made into the underpants type of the disposable diaper which is one Embodiment of a disposable wearing article. The top view of the developed diaper. The exploded perspective view of a diaper. FIG. 4 is an end view taken along line IV-IV in FIG. 2. The VV line | wire cutting end view of FIG. The figure which shows the wearing condition of a diaper.

  FIG. 1 is a perspective view showing a disposable diaper 1 as an example of the disposable wearing article according to the present invention in a state where the front and rear waist regions of the disposable diaper 1 are connected to each other with a connecting member to form a pants, FIG. 4 is an exploded perspective view of the diaper 1, FIG. 4 is an end view taken along the line IV-IV of FIG. 2, and FIG. 5 is an end view taken along the line VV of FIG. 2-5, each elastic body is shown in the state extended against the contraction force. Drawing 6 is a figure which looked at a wearing state of diaper 1 from a wearer's side.

  As shown in FIG. 1, the diaper 1 has a longitudinal direction Y and a lateral direction X, a front waist region 11 and a rear waist region 12, a crotch region 13 positioned between these front and rear waist regions 11, 12, It has front and rear end edges 14 and 15 extending in the direction X, and both side edges 16 extending in the longitudinal direction Y. The front waist region 11 is the first waist region of the present invention, and the rear waist region 12 is the second waist region. The diaper 1 can be made into a pants type by connecting a hook element 81 attached to the rear waist region 12 and a loop element 82 attached to the front waist region.

  As shown in FIGS. 2 to 5, the diaper 1 includes a virtual vertical center line PP that bisects the dimension in the horizontal direction X and a virtual horizontal center line QQ that bisects the dimension in the vertical direction Y. And is substantially symmetric about the virtual vertical center line PP. Some of the reference numerals are omitted for any one of the symmetrically formed components.

  As shown in FIG. 3, the diaper 1 includes a liquid-permeable top sheet 20 positioned on the body side, and a liquid-impermeable back sheet 30 positioned on the non-body side (clothing side) opposite to the diaper 1. The water-absorbing absorber 40 positioned between the front and back sheets 20 and 30 and the leakage preventing sheet 50 positioned between the absorber 40 and the back sheet 30 are provided. A pair of leakage barrier cuffs 60 spaced apart in the lateral direction X are formed on the body side of the topsheet 20. The top sheet 20 and the back sheet 30 form the chassis 10 of the present invention.

As the surface sheet 20, for example, a point bond fiber nonwoven fabric having a mass of about 15 to 35 g / m ² can be used. As the back sheet 30, a spunbond / meltblown / spunbond (SMS) fiber nonwoven fabric or a spunbond fiber nonwoven fabric having a mass of about 10 to 30 g / m ² , or a plastic sheet or a laminate of the fiber nonwoven fabric and the plastic sheet may be used. it can.

As the leak barrier cuff 60, a spunbond / meltblown / spunbond (SMS) fiber nonwoven fabric having a mass of about 10 to 30 g / m ² can be used. The front and rear end edges 61 and 62 of the leak barrier cuff 60 are laminated in alignment with the front and rear end edges 21 and 22 of the topsheet 20, and are joined to each other by a hot melt adhesive (not shown) or the like. The outer edge 63 of the leakage barrier cuff 60 overlaps both side edges 33 of the back sheet 30 and is joined to each other by a hot melt adhesive (not shown) or the like. The inner edges 64 of the leakage barrier cuff 60 are spaced apart from each other in the lateral direction X, and the inner edges 64 overlap the top sheet 20 but are not joined thereto, and can be separated from the top sheet 20. A cuff elastic body 65 extending in the longitudinal direction Y is attached to the inner edge 64 so as to be retractable in an extended state. By attaching the cuff elastic body 65 in this manner, the inner edge 64 is spaced apart so as to stand up from the top sheet 20, and adheres to the wearer's skin, preventing urine and the like from leaking to the outside of the diaper 1.

  The absorber 40 is located at least in the rear waist region 12 and the crotch region 13, and in this embodiment, extends from the crotch region 13 to the front and rear waist regions 11 and 12. As shown in FIG. 5, the absorbent body 40 includes a water-absorbing core material 44 and tissue papers 45 and 46 that cover the core material 44. As the core material 44, fluff pulp, superabsorbent polymer particles, or a mixture thereof can be used. As shown in FIG. 2, in the absorbent body 40, the dimensions in the lateral direction X of the front and rear waist regions 11 and 12 are made larger than the dimensions in the virtual lateral center line QQ. More specifically, the absorber 40 has the same dimension in the lateral direction X at least in the front and rear waist regions 11 and 12, and in the crotch region 13, the dimension in the lateral direction X faces the virtual lateral center line QQ. It is gradually getting smaller.

  The front and back sheets 20 and 30 and the absorber 40 are joined to each other by a joining means such as a hot melt adhesive (not shown). The absorber 40 has a smaller surface area than the front and back sheets 20 and 30, and the front and back sheets 20 and 30 extend from the front and rear end edges 41 and 42 and both side edges 43 of the absorber 40. Therefore, front and rear flaps 74 and 75 and side flaps where the absorber 40 does not exist are formed on the outer side in the longitudinal direction Y and the lateral direction X of the absorber 40. The side flap includes a first side flap 71 located in the front waist region 11, a second side flap 72 located in the rear waist region 12, and a crotch side flap 73 located in the crotch region 13. A side flap elastic body 76 extending in the vertical direction Y is attached to the crotch side flap 73. The side flap elastic body 76 is bonded to at least one of the front and back sheets 20 and 30 via an adhesive means such as a hot melt adhesive, and is attached to be stretchable in the longitudinal direction Y.

  A leakage prevention sheet 50 is disposed between the absorber 40 and the back sheet 30. As the leakage preventing sheet 50, a liquid-impermeable and non-breathable plastic film can be used. The area of the leakage preventing sheet 50 is made larger than that of the absorber 40. Therefore, it is possible to prevent urine or the like absorbed by the absorber 40 from leaking out of the diaper 1.

  The back sheet 30 and the leakage prevention sheet 50 are joined to each other by a joining means 90 such as a hot melt adhesive. Both side edges 93 of the joining means 90 are positioned inward in the horizontal direction X with respect to both side edges 33 of the back sheet 30, and are positioned inward in the horizontal direction X with respect to both side edges 53 of the leakage prevention sheet 50. In the vicinity of both side edges 33 and 53, a non-bonding region 94 in which the bonding means 90 is not formed is formed. In the non-bonded region 94, the back sheet 30 and the leakage prevention sheet 50 are not bonded to each other. The side flap elastic body 76 is attached to the surface of the leakage prevention sheet 50 opposite to the surface facing the back sheet 30 and overlapping the non-bonding region 94. In this embodiment, a plurality of string-shaped or strand-shaped side flap elastic bodies 76 are attached so that the side flap elastic bodies 76 and the joining means 90 do not overlap. It should be noted that at least a part of the side flap elastic body 76 may be located outside the lateral direction X of the joining means 90, and a part thereof may overlap the joining means 90. The joining means 90 may be continuously formed on the back sheet 30 by, for example, coater coating or may be intermittently formed by spiral spray or the like.

  The hook element 81 is attached to the rear waist region 12 via a support sheet 83. The support sheet 83 includes a fixing portion 84 that is fixed to the second side flap 72, and an extension portion 85 that extends from the fixing portion 84 to the lateral direction X outside the side edge 16, and is hooked to the extension portion 85. Element 81 is attached. The fixing portion 84 is located between the leak barrier cuff 60 and the back sheet 30 (see FIGS. 3 and 4), and inner and outer edges 84a and 84b extending in the vertical direction Y, and front and rear end edges 84c and 84d extending in the horizontal direction X. And is defined by

  An imaginary line R connecting the intersection A of the outer edge 84b and the front edge 84c of the fixing portion 84 and the intersection B of the side edge 43 of the absorber 40 and the imaginary horizontal center line QQ is represented by the second side flap 72 and Located on the crotch side flap 73. In other words, the imaginary line R does not overlap the absorber 40 but is positioned outside the lateral direction X.

  The side flap elastic body 76 has a rear end 76 b extending from the imaginary line R toward the rear waist region 12. That is, the side flap elastic body 76 and the virtual line R intersect each other. The front end 76a of the side flap elastic body 76 extends from the crotch region 13 to the front waist region 11 side.

  The bending stiffness in the longitudinal direction Y of the first and second side flaps 71 and 72 and the crotch side flap 73 is about 0.10 to 0.20 N / m, and the bending stiffness in the lateral direction X is about 0.05. -0.10 N / m. These bending stiffnesses were measured by the following method.

<Measurement method of bending stiffness>
The bending stiffness was measured by the KES test. The KES test was measured using a KES-FB2-AUTO-A automatic pure bending tester (Kato Tech Co., Ltd.). Measurement was performed under the conditions of a temperature of 20 ° C. and a humidity of 60% using 10 mm × 10 mm as a sample piece within the range including the virtual line R. More specifically, as a sample piece, a portion where the back sheet 30, the leakage prevention sheet 50, and the leakage barrier cuff 60 are laminated is 10 mm in the vertical direction Y and 10 mm in the horizontal direction X as a sample piece. It is cut and used.
Such a sample piece was set in a KES testing machine and measured with a curvature (1 / cm) using a sensor of SEN10 having a torque sensitivity of up to 10 gf / cm / 10v full scale. The sample pieces were measured for bending rigidity in the longitudinal direction Y and the transverse direction X, respectively.

  As shown in FIG. 6, the diaper 1 can be worn by the wearer H as a pant-type diaper 1 by connecting the front and rear waist regions 11 and 12 by connecting the hook element 81 to the loop element 82. When urination occurs when the diaper 1 is worn, the absorber 40 absorbs urine and becomes heavy, and the entire diaper 1 is pulled downward in the drawing. At the intersection A located at one end of the imaginary line R, the diaper 1 is held by the wearer's waist by the hook element 81, and at the intersection B located at the other end of the imaginary line R, the diaper 1 is Since the diaper 1 is pulled downward, the diaper 1 is pulled along the virtual line R. While the intersection A is securely held by the wearer H, the bending rigidity in the longitudinal direction Y of the second side flap 72 and the crotch side flap 73 where the virtual line R is located is about 0.10 to 0.20 N / m, Since the bending rigidity in the direction X is about 0.05 to 0.10 N / m, the diaper 1 does not hang down due to its weight even if urination occurs. Since the diaper 1 does not hang down due to the weight of the absorbent body, the diaper 1 does not hang down with respect to the wearer's waist, and can maintain a wearing state in close contact with the wearer.

  Since the bending rigidity of the second side flap 72 and the crotch side flap 73 is set as described above, the side flaps are not easily bent, and are prevented from rolling up to the back sheet 30 side or being caught on the top sheet 20 side. be able to. Therefore, these 2nd side flaps 72 and crotch side flaps 73 can cover this along a wearer's buttocks. When the wearer's buttocks are covered with the flap, even if excrement leaks from these side flaps, it can be retained and prevented from adhering to the clothing. Moreover, the diaper 1 which is good also in appearance can be provided by covering the buttocks with a flap. Furthermore, when these flaps are wound on the surface sheet 20 side, the wound portions may enter the inside of the diaper 1 and excrement may adhere, but this can be prevented in advance.

  When the diaper 1 as described above is worn, the pulled virtual line R closely adheres to the wearer's H crotch root. Since the imaginary line R is in close contact with the base of the thigh where the leg moves, the urine or the like can be prevented from leaking without hindering the movement of the leg of the wearer H. Moreover, the diaper 1 which is going to fall can be hold | maintained by the wearer's H crotch root with the virtual line R, and the diaper 1 can be prevented from sliding down. When the bending rigidity in the longitudinal direction Y of the second side flap 72 and the crotch side flap 73 is 0.20 N / m and the bending rigidity in the lateral direction X is larger than 0.10 N / m, the whole becomes hard. Since the tension acting on the side flaps when worn does not concentrate on the imaginary line R, the imaginary line R of the side flaps hardly adheres to the wearer's body.

  The imaginary line R is located outside the absorbent body 40 in the lateral direction X so as not to overlap the absorbent body 40. Therefore, the virtual line R is not divided by the absorber 40. When the imaginary line R overlaps with the absorber 40, the continuous pulling force from the intersection A to the intersection B is divided, so that the tension state of the side flaps collapses and the side flaps droop outside the diaper 1. There is a possibility of getting caught inside. In the present invention, since the extended state of the side flaps can be maintained by the imaginary line R, they are not twisted or caught.

  Since the imaginary line R and the side flap elastic body 76 intersect each other, the side flap elastic body 76 is held by the imaginary line R, and the side flap elastic body 76 can be prevented from hanging down. Accordingly, the side flap elastic body 76 and the crotch side flap 73 to which the side flap elastic body 76 is attached can be brought into close contact with the wearer's buttocks and can prevent excrement from leaking out of the diaper 1. Moreover, since the crotch area 13 of the diaper 1 is also pulled up along the virtual line R when the front and rear end edges 14 and 15 of the diaper 1 are grasped and pulled up, the wearing state can be easily adjusted.

  The side flap elastic body 76 is attached to a non-joining region 94 where the joining means 90 is not formed. In the non-joining region 94, the bending rigidity is reduced as compared with the region where the joining means 90 is formed. Therefore, the crotch side flap 73 can flexibly adhere to the wearer's leg in conformity with the expansion and contraction of the side flap elastic body 76. Furthermore, since the side flap elastic body 76 is attached to the leakage prevention sheet 50 and can be separated from the back sheet 30 and can be in close contact with the wearer, the side flap elastic body 76 is more likely to be in close contact. Further, since the side flap elastic body 76 is attached to a region where the bending rigidity is small, when the diaper 1 is pulled up, the pulling force is easily transmitted to the side flap elastic body 76, and the crotch side flap 73 is attached to the wearer. It can be closely attached to the buttocks. When a part of the plurality of side flap elastic bodies 76 overlaps with the joining means 90, the overlapped side flap elastic bodies 76 press the leakage preventing sheet 50 and the back sheet 30 toward the wearer side. Since the side flap elastic body 76 that does not overlap the joining means 90 can be accommodated, the crotch side flap 73 can be further closely attached to the wearer's body.

  Although the elastic yarn is used as the side flap elastic body 76 in this embodiment, it is not limited to this, and an elastic sheet or the like can also be used. Further, the rear end 76b of the side flap elastic body 76 is located on the rear waist region 12 side with respect to the imaginary line R. The rear end 76b here is substantially elastic in the side flap elastic body 76. This means the rear end of the part to be expressed.

  The distance between the virtual line R and the side edge 16 of the chassis 10 is about 5 to 20 mm. Note that the imaginary line R and the side edge 16 are not necessarily formed in parallel, so even if they are the closest parts, they are larger than about 5 mm, and even if they are the most separated parts, they are about 20 mm. Is made smaller. Therefore, the 2nd side flap 72 and the crotch side flap 73 can cover a wearer's buttocks stably. When the separation dimension is smaller than 5 mm, the flap is easily caught inside the diaper 1, and when larger than 20 mm, the diaper 1 is easily displaced by being pulled by the movement of the wearer's leg.

  As shown in FIG. 2, the chassis 10 has a dimension W1 in the virtual horizontal center line QQ of about 180 to 300 mm, and in this embodiment, about 205 mm. The absorber 40 has the virtual horizontal center line Q- The dimension W2 at Q is about 70 to 100 mm, and in this embodiment is about 80 mm. The dimension W2 of the absorber 40 is about 0.2 to 0.4 times the dimension W1 of the chassis 10. That is, W2 / W1 = 0.2 to 0.4. By doing in this way, the crotch side flap 73 is not caught inside the diaper 1, and can cover a wearer's buttocks.

  The angle formed by the imaginary line R and the imaginary horizontal center line QQ is about 45 to 60 °. Therefore, the entire collar portion can be covered with the second side flap 72 and the crotch side flap 73. When the angle is smaller than 45 °, the virtual line R is located on the crotch side from the wearer's buttocks, pulls the diaper 1 downward in accordance with the wearer's movement, and the diaper 1 shifts downward. End up. When the said angle is larger than 60 degrees, the virtual line R will be located in a wearer's buttocks and cannot fully cover a buttocks.

  When the dimension L1 in the longitudinal direction Y of the rear waist region 12 and the dimension L2 from the rear end edge 15 of the diaper 1 to the virtual lateral center line QQ are compared, the dimension L1 is about 0.4-0. It is supposed to be 7 times. That is, L1 / L2 = 0.4 to 0.7. The rear waist region 12 is a portion where both side edges extend in parallel. When the L1 / L2 is smaller than 0.4, the area of the second side flap 72 becomes small, and the wearer's buttocks cannot be sufficiently covered. It becomes easy to get caught inside the diaper 1. When L1 / L2 is larger than 0.7, the area of the second side flap 72 is too large, and this is pulled by the movement of the wearer's leg, so that the diaper 1 is easily displaced.

  In the rear waist region 12 to which the support sheet 83 is attached, a virtual parallel line SS, a virtual line R, and a side edge 43 of the absorber 40 parallel to the virtual horizontal center line QQ along the lower edge of the support sheet 83. Are compared with the region S2 defined by the virtual line R, the side edge 16, and the virtual lateral center line QQ, the region S2 is about 0.41 to 0.8 of the region S1. It has been doubled. That is, S2 / S1 = 0.41 to 0.8. The region S1 is easily adhered to the wearer's buttocks, and the region S2 is spaced apart from the wearer's buttocks and covers the buttocks. When S2 / S1 is smaller than 0.41, the region covering the heel portion becomes small, and the wearer's heel portion cannot be sufficiently covered. Moreover, it will become easy to be caught inside the diaper 1. If S2 / S1 is greater than 0.8, the region S2 covering the buttocks is too large, and the diaper 1 is easily displaced by being pulled by the movement of the wearer's leg. Moreover, when the diaper 1 is worn, it may be caught on the wearer's foot and difficult to wear.

The disclosure relating to the present invention described above can be summarized at least in the following matters.
The present invention relates to the improvement of the following disposable wearing article 1. The disposable wearing article 1 has a longitudinal direction Y and a transverse direction X, and a non-body side that is the body side and the opposite side thereof, and a first waist region that is one of the front and rear waist regions 11 and 12, and either The chassis 10 which has the 2nd waist area which is the other, the crotch area 13 located between these 1st and 2nd waist areas, and the virtual horizontal centerline QQ which bisects the dimension in the said vertical direction Y. And at least the water-absorbing absorber 40 located in the crotch region 13, side flaps 71, 72, 73 located outside the lateral direction X of the absorber 40, and the second waist region attached to the second waist region. Connecting means 81 and 82 for connecting the first and second waist regions to each other.

  In the disposable wearing article 1 according to the present invention, the side flap includes a second side flap 72 located in the second waist region 12 and a crotch side flap 73 located in the crotch region 13. The connecting means includes a fixing portion 84 fixed to the second side flap 72, and an extending portion 85 that extends outward in the lateral direction X from the fixing portion 84 and can be connected to the first waist region. The fixing portion 84 is defined by inner and outer edges 84a and 84b extending in the vertical direction Y and front and rear end edges 84c and 84d extending in the horizontal direction X. An imaginary line R connecting the intersection A of the outer edge 84b and the front edge 84c, the side edge 43 of the absorber 40 and the intersection B of the virtual lateral center line QQ is the second side flap 72 and Located on the crotch side flap 73, the bending rigidity in the longitudinal direction Y of the second side flap 72 is 0.10 to 0.20 N / m, and the bending rigidity in the lateral direction X is 0.05 to 0. .10 N / m.

The above invention can include at least the following embodiments.
(1) The virtual line R is located on the outer side in the lateral direction X with respect to the side edge 43 of the absorber 40.
(2) The chassis 10 includes a top sheet 20 located on the body side and a back sheet 30 located on the non-body side. A leakage prevention sheet 50 is attached between the sheets 20 and 30, and the back sheet 30 and the leakage prevention sheet 50 are joined to each other by the joining means 90 and the transverse direction X of the joining means 90. A non-joining region 94 where the back sheet 30 and the leakage prevention sheet 50 are not joined to each other is formed on the outside. The surface of the leakage prevention sheet 50 opposite to the surface facing the back sheet 30, is located at least in the crotch side flap 73 at a position overlapping the non-bonding region 94, and the longitudinal direction Y A side flap elastic body 76 that can be contracted in an extended state is attached to the.
(3) The side flap elastic body 76 intersects the virtual line R.
(4) The space | interval dimension in the said horizontal direction X of the said virtual line R and the side edge 16 of the said chassis 10 is 5-20 mm.
(5) An angle formed by the virtual line R and the virtual horizontal center line QQ is 45 ° to 60 °.
(6) The dimension in the said horizontal direction X of the said 2nd waist area 12 of the said absorber 40 is made larger than it in the said virtual horizontal centerline QQ.
(7) In the virtual horizontal center line QQ, the size of the absorber 40 is 0.2 to 0.4 times the size of the chassis 10.

  In addition to the materials described in this specification, various constituent materials that are normally used in this type of field are limited to the constituent members of the disposable diaper 1 that is an example of a disposable wearing article. Can be used. Further, in the specification of the present invention, the terms “first” and “second” are used merely to distinguish similar elements, positions, and the like.

1 Disposable wearing articles (disposable diapers)
10 Chassis 11 Front waist area (first waist area)
12 Rear waist area (second waist area)
13 Crotch region 16 Both side edges 20 Top sheet 30 Back sheet 40 Absorber 43 Both side edges 50 Leak prevention sheet 71 First side flap 72 Second side flap 73 Crotch side flap 76 Side flap elastic body 81 Connecting means (hook element)
82 Connection means (loop element)
83 Connection means (support sheet)
84 Fixing portion 85 Extension portion 90 Joining means 94 Non-joining region R Virtual line X Horizontal direction Y Vertical direction PP Virtual vertical center line QQ Virtual horizontal center line

Claims (7)

A non-body side that has a longitudinal direction and a transverse direction, that is the body side and the opposite side thereof, a first waist area that is one of the front and rear waist areas, and a second waist area that is the other side; A chassis having a crotch region located between the first and second waist regions, a virtual lateral center line that bisects the dimension in the longitudinal direction, and a water absorption property located at least in the second waist region and the crotch region A disposable wearing article comprising: the absorbent body; a side flap located on the laterally outer side of the absorbent body; and a connecting means attached to the second waist region and connecting the first and second waist regions to each other.
The side flap has a second side flap located in the second waist region, and a crotch side flap located in the crotch region,
The connecting means includes a fixing portion fixed to the second side flap, and an extending portion that extends outward in the lateral direction from the fixing portion and can be connected to the first waist region, and the fixing portion is The inner and outer edges extending in the longitudinal direction and the front and rear edge extending in the lateral direction;
An imaginary line connecting the intersection of the outer edge and the front edge and the intersection of the side edge of the absorber and the virtual lateral center line is located on the second side flap and the crotch side flap, and 2 flexural rigidity in the longitudinal direction of the side flaps is 0.10 to 0.20 / m, flexural rigidity in the transverse direction Ri 0.05~0.10N / m der,
The chassis has a top sheet located on the body side and a back sheet located on the non-body side,
Between these sheets, a leakage prevention sheet is attached, and the back sheet and the leakage prevention sheet are joined to each other by joining means, and the back sheet and the laterally outside of the joining means A non-joining region is formed in which the leakage prevention sheet and the leak preventing sheet are not joined to each other,
The surface of the leakage prevention sheet that is opposite to the surface facing the back sheet, and is positioned at least on the crotch side flap at a position overlapping the non-bonded region and contracted in an elongated state in the longitudinal direction. The disposable wearing article, wherein a possible side flap elastic body is attached .   The disposable wearing article according to claim 1, wherein the virtual line is located on the outer side in the lateral direction with respect to a side edge of the absorber. The disposable wearing article according to claim 1 or 2 , wherein the side flap elastic body intersects the imaginary line. The disposable wearing article according to any one of claims 1 to 3 , wherein a distance between the virtual line and a side edge of the chassis in the lateral direction is 5 to 20 mm. The disposable wearing article according to any one of claims 1 to 4 , wherein an angle formed between the virtual line and the virtual horizontal center line is 45 ° to 60 °. The disposable wearing article according to any one of claims 1 to 5 , wherein a dimension in the lateral direction of the second waist region of the absorbent body is made larger than that in the virtual lateral center line. The disposable wearing article according to any one of claims 1 to 6 , wherein in the virtual lateral center line, the size of the absorber is 0.2 to 0.4 times the size of the chassis.

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