JP4354827B2 - Disposable wearing items - Google Patents

Description

The present invention relates to a disposable wearing article on which a pad for absorbing and holding excrement is placed and worn together with the pad.

It has a front waist area and a back waist area in the vertical direction, and a crotch area located between the waist areas, and is interposed between the liquid-permeable surface sheet and the liquid-impermeable back sheet, and the sheets. In addition, there is a disposable wearing article that is composed of a liquid-absorbent core extending between the front and rear waist regions and that is worn together with the pad by placing a pad that absorbs and holds excrement on the outer surface of the topsheet (see Patent Document 1).

A concave region in which a pad is disposed is formed in the center in the lateral direction of the crotch region of the article. The recessed area is formed from front and back sheets excluding the core, and has a substantially rectangular shape that is long in the vertical direction. A stretchable elastic member extending in an annular shape is attached to the periphery of the recessed region so as to be contractible. In this article, the contraction force of the elastic member acts so as to reduce the area of the recessed area, and the recessed area is recessed downward in the thickness direction of the article by the action, so the pad can be fitted into the recessed area, It is possible to prevent the pad from moving while the article is worn.
JP 2003-116910 A

  In the article disclosed in Patent Document 1, if the thickness dimension of the pad is smaller than the depth dimension of the recessed area, the skin contact surface of the pad is positioned below the top sheet when the pad is fitted into the recessed area. Therefore, a gap is generated between the pad and the wearer's skin, and the pad cannot be brought into close contact with the wearer's skin. In this article, in order to bring the pad into close contact with the wearer's skin, when the pad thickness dimension is made larger than the depth dimension of the recessed area so that the skin contact surface of the pad is located above the surface sheet, the article is worn. The pad is bulky and gives the wearer a feeling of strangeness.

  An object of the present invention is to provide a disposable wearing article that allows the pad to be in close contact with the wearer's skin and does not give the wearer a sense of incongruity.

The premise of the present invention to solve the above-mentioned problems is that the front waist area and the back waist area in the vertical direction and the crotch area located between these waist areas are located on the skin contact side. It is composed of a liquid-permeable top sheet, a liquid-impervious back sheet located on the non-skin contact side, and a liquid-absorbent core having a predetermined thickness that extends between the front and rear waist regions interposed between the sheets. A disposable wearing article that is provided with a recessed pad arrangement portion for positioning at least a central portion of a pad that absorbs and holds excrement in a surface sheet and is worn with the pad.

The feature of the present invention in the premise is that the pad arrangement portion is formed from front and back sheets excluding the core and is surrounded by the core, and at least a lateral direction of the crotch region of the front and rear waist region and the crotch region A plurality of stretchable elastic members defined in the center and extending in the vertical direction are attached to the placement portion so as to be shrinkable. When this article is worn, the elastic member is curved in a U shape at the wearer's crotch, and the elastic member extends from the crotch toward the wearer's abdomen and buttocks. In this article, contractile force of the elastic member acts on the placement portion, the pad placement portion is lifted toward the crotch portion of the wearer by the contraction force of the elastic member, the thickness pad of the article put on the placement unit with it Lifted upward in the direction.

The present invention has the following embodiments.
(1) In the article, the elastic elastic member cuts the pad placement portion vertically, and both longitudinal end portions of the elastic member extend to the lower surface side of the core located in the front and rear waist area. In the article of this aspect, the core located in the front and rear waist area is pressed against the wearer's abdomen and buttocks by the contraction force of the elastic member.
(2) In the article, the stretchable elastic member is composed of a first stretchable elastic member and a second stretchable elastic member that extend in a laterally spaced manner. In the article of this aspect, the contraction force of the first and second elastic elastic members acts on substantially the entire pad arrangement part, and the entire arrangement part is lifted toward the wearer's crotch part by the contraction force of these elastic members. Accordingly, the entire pad placed on the placement portion is lifted upward in the thickness direction of the article.
(3) In the article, the first and second stretchable elastic members make an arc inwardly in the transverse direction of the article, and the lateral separation dimension of the first and second stretchable elastic members is the length of the pad placement portion. It is the smallest at the center of the direction. In the article of this aspect, the contraction force of the first and second elastic elastic members acts on substantially the entire pad arrangement portion, and the elastic elastic members extend along the curve of the wearer's crotch portion. Therefore, the arrangement part is reliably lifted toward the crotch part, and the pad placed on the arrangement part is lifted toward the crotch part accordingly.
(4) In the article, the surface sheet extends from the upper surface of the core toward the lower surface along the inner peripheral wall of the core surrounding the pad arrangement portion, and the front and back sheets positioned in the arrangement portion are fixed to each other on the lower surface side of the core. A step corresponding to the thickness dimension of the core is formed between the upper surface of the core and the arrangement portion. In the article of this aspect, the displacement movement of the pad placed on the pad placement portion is prevented by the inner peripheral wall of the core.
(5) The article has a long rectangular pad arrangement portion in the longitudinal direction, the transverse direction of the length dimension is slightly larger than that of the lateral identical or the pad in the transverse direction of the pad arrangement portion. In the article of this aspect, the lateral movement of the pad placed on the pad placement portion is prevented by the inner peripheral wall of the core.
(6) In the article, the elongation stress of the first and second elastic elastic members is in the range of 0.1 to 4.0 N.

  According to the disposable wearing article according to the present invention, when it is worn, the pad placement portion is lifted toward the wearer's crotch portion by the contraction force of the elastic elastic member, and the pad is lifted upward in the thickness direction of the article. Therefore, the pad can be brought into close contact with the wearer's skin, and no gap is formed between the pad and the wearer's skin, and the excrement can be reliably absorbed and held by the pad.

  An article in which both ends in the longitudinal direction of the elastic elastic member extend to the lower surface side of the core located in the front and rear waist region is a core located in the front and rear waist region by the contraction force of the elastic elastic member when worn. Is pressed against the wearer's abdomen and buttocks, and the core located in the waist area can be brought into close contact with the wearer's skin.

A wearing article formed of a first elastic elastic member and a second elastic elastic member, which extend with the elastic elastic member spaced apart and facing in the lateral direction, has a contracting force of the first elastic elastic member and the second elastic elastic member arranged in a pad. The entire arrangement portion is lifted toward the wearer's crotch portion by the contraction force of the elastic elastic member, and the entire pad placed on the arrangement portion is lifted upward in the thickness direction of the article. Therefore, the entire pad can be brought into close contact with the wearer's skin.

In the article in which the first and second stretchable elastic members are arced inward in the lateral direction of the article, and the lateral separation dimension of the stretchable elastic members is minimized at the center in the longitudinal direction of the placement portion. The contraction force of these elastic elastic members acts on almost the entire pad arrangement part, and the entire arrangement part is lifted toward the wearer's crotch part by the contraction force of these elastic elastic members, and is placed on the arrangement part accordingly. The entire pad is lifted upward in the thickness direction of the article. In this article, these elastic elastic members extend along the curvature of the wearer's crotch, the pad placement portion is lifted toward the crotch, and the pad is lifted toward the wearer's crotch accordingly. Therefore, the pad can be securely attached to the crotch portion.

In an article in which a step corresponding to the thickness of the core is formed between the upper surface of the core and the pad placement part, the displacement of the pad placed on the placement part is prevented by the inner peripheral wall of the core. In this case, the pad does not move inadvertently from the arrangement portion. In this article, when the wearer's body pressure is applied to the pad, a force that pushes the pad placement portion downward in the thickness direction of the article acts on the placement portion from the pad, and the placement portion resists the contraction force of the elastic elastic member. Since the pad is recessed downward in the thickness direction of the article and the pad is lowered downward in the thickness direction of the article, the pad does not become bulky and there is no sense of incongruity with the worn article.

An article in which the lateral length of the pad placement portion is the same as or slightly larger than that of the pad in the lateral direction is such that the sides of the pad are positioned on the core when the pad is placed on the placement portion. Since the pad is prevented from shifting in the lateral direction by the inner peripheral wall of the core and located on the inner side of the inner peripheral wall, it is possible to prevent the pad from shifting in the lateral direction during wearing of the article.

  In an article in which the elongation stress of the first and second elastic elastic members is in the range of 0.1 to 4.0 N, the contraction force of the first and second elastic elastic members sufficiently acts on the pad arrangement portion, and The arrangement portion can be reliably lifted toward the wearer's crotch portion by the contraction force of the elastic elastic member, and the pad can be reliably lifted upward in the thickness direction of the article.

  The details of the disposable wearing article according to the present invention will be described below with reference to the accompanying drawings.

1 and 2, a perspective view of a disposable wearing article 20A shown in a state carrying the pad 43 to the unit 36 is in the plane view of the article 20A of Fig. 1 showing a previous state Ru placing the pad 43, Fig. 3 and 4 are a sectional view taken along line 3-3 in FIG. 1 and a sectional view taken along line 4-4 in FIG. 1 and 2, the horizontal direction is indicated by an arrow L, the vertical direction is indicated by an arrow M, and the thickness direction is indicated by an arrow N (only in FIG. 1). FIG. 2 shows the article 20 </ b> A deployed in the vertical and horizontal directions against the contraction force of the elastic members 40, 41, 54, 57, and 60. The inner surfaces of the front and back sheets 26 and 27 and the leak-proof sheet 28 are surfaces facing the core 29, and the outer surfaces of the sheets 26, 27 and 28 are surfaces not facing the core 29. The inner surfaces of the front and back sheets 44 and 45 forming the pad 43 are surfaces facing the core 46 forming the pad 43, and the outer surfaces of the sheets 44 and 45 are surfaces not facing the core 46. Say.

The article 20 </ b> A has both end portions 21 extending in the lateral direction and both side portions 22 extending in the vertical direction, and the front waistline region 23 and the back waistline region 25 in the vertical direction, and between these waistline regions 23, 25. And a crotch region 24 located at the bottom. The article 20A is composed of a liquid-permeable top sheet 26 located on the skin contact side, a liquid-impervious back sheet 27 located on the skin non-contact side, and a pair of non-extends extending in the vertical direction so as to face each other in the lateral direction. A liquid-permeable leak-proof sheet 28 and a liquid-absorbent core 29 having a predetermined thickness are provided between the front and back sheets 26 and 27 and joined to the inner surfaces of the sheets 26 and 27. Both side portions 22 of the crotch region 24 are arced inwardly in the lateral direction of the article 20A. As shown in FIG. 2, the planar shape of the article 20 </ b> A has an hourglass shape. The article 20 </ b> A is an open-type disposable diaper that connects both side portions 22 of the front and rear waist regions 23 and 25 when worn, and a pad 43 that absorbs and holds excrement is placed on the outer surface of the topsheet 26 and worn together with the pad 43. .

  The top sheet 26 is formed from a hydrophilic fiber nonwoven fabric 30. The back sheet 27 is formed of a composite sheet obtained by laminating a gas-impermeable liquid-impervious plastic film 31 and a hydrophobic fiber nonwoven fabric 32. The leak-proof sheet 28 is formed of a hydrophobic fiber nonwoven fabric 33 that has been subjected to water repellent treatment. The core 29 is a mixture of particulate or fibrous superabsorbent polymer and fluff pulp, or a mixture of particulate or fibrous superabsorbent polymer, fluff pulp and thermoplastic synthetic resin fiber. The core 29 is compressed to a predetermined thickness, and its rigidity is higher than that of the front and back sheets 26 and 27 and the leak-proof sheet 28. The core 29 is entirely covered with a tissue paper (not shown) in order to prevent the core 29 from being deformed. The core 29 is located in the front and rear waist regions 23 and 25 and the crotch region 24 and has both end edges 34 extending in the horizontal direction and both side edges 35 extending in the vertical direction.

The transverse center of the front and rear waist regions 23, 25 and the crotch region 24, the pad unit 36 of Ru carrying the pads 43 are defined. The placement portion 36 has a rectangular shape whose plan shape is long in the vertical direction, and extends from the crotch region 24 to the rear half of the front waistline region 23 and the front half of the back waistline region 25. The placement portion 36 is formed of a top sheet 26 and a back sheet 27 excluding the core 29, and is surrounded by an inner peripheral wall 37 of the core 29. The arrangement portion 36 has both end edges 38 that are located in the front and rear waist regions 23 and 25 and extend in the lateral direction, and both side edges 39 that are located between both end edges 38 and extend in the vertical direction. The arrangement portion 36 has a horizontal length dimension between the side edges 38 that is the same as or slightly larger than that of the pad 43 in the horizontal direction, and a vertical length dimension between the end edges 39. Is the same as that in the vertical direction of the pad 43 or slightly larger than that in the vertical direction of the pad 43.

The top sheet 26 extends from the upper surface of the core 29 toward the lower surface along the inner peripheral wall 37 of the core 29 surrounding the placement portion 36, and the inner surface thereof is fixed to the inner peripheral wall 37 of the core 29. In the arrangement portion 36, the inner surfaces of the front and back sheets 26 and 27 are fixed to each other on the lower surface side of the core 29. The placement portion 36 is located on the lower surface side of the core 29, and a step according to the thickness dimension of the core 29 is formed between the upper surface of the core 29 and the placement portion 36. A plurality of first elastic elastic members 40 and second elastic elastic members 41 extending straight in the vertical direction are attached to the arrangement portion 36 so as to be contractible. In addition, the shape of the arrangement | positioning part 36 is not limited to the rectangle of illustration, Other shapes, such as an ellipse, a rhombus, and a trapezoid, can also be employ | adopted for the arrangement | positioning part 36.

  The first and second elastic members 40 and 41 are arranged inside the side edges 39 of the arrangement portion 36 and are arranged to be spaced apart and opposed in the lateral direction. The first and second elastic members 40, 41 run vertically through the placement portion 36, reach the front half of the front waistline region 23 and the back half of the back waistline region 25 beyond both end edges 38 of the placement portion 36. Yes. The elastic members 40 and 41 are interposed between the top sheet 26 and the back sheet 27 and are fixed to the inner surfaces of the sheets 26 and 27 in a state where the elastic members 40 and 41 are stretched at a predetermined magnification in the vertical direction. Both longitudinal ends 42 of the first and second elastic members 40, 41 extend to the lower surface of the core 29 located in the front and rear waist regions 23, 25, and between the inner surface of the back sheet 27 and the lower surface of the core 29. And is fixed to the inner surface of the back sheet 27. The elastic members 40 and 41 are yarns, but a band-like elastic member can also be used in addition to the yarn shape.

  The pad 43 is interposed between the liquid-permeable surface sheet 44 positioned on the skin contact side, the liquid-impermeable back sheet 45 positioned on the skin non-contact side, and the front and back sheets 44 and 45. The liquid-absorbent core 46 has a predetermined thickness and is joined to the inner surfaces of 44 and 45. The pad 43 has a substantially rectangular shape that is long in the vertical direction, and has both end portions 47 that extend in the horizontal direction and both side portions 48 that extend in the vertical direction. The thickness dimension of the core 46 that forms the pad 43 is substantially the same as that of the core 29 that forms the article 20A. The front and back sheets 44 and 45 overlap each other at both end portions 47 and both side portions 48 of the pad 43, and the inner surfaces of the sheets 44 and 45 are fixed to each other. The top sheet 44 is formed from a hydrophilic fiber nonwoven fabric 49, and the back sheet 27 is formed from a hydrophobic fiber nonwoven fabric 50. The core 46 is the same mixture as that of the article 20A, and the whole is encased in a tissue paper (not shown). The pad 43 may be formed of a core 46 and a liquid-permeable sheet that covers the entire core 46.

  The leak-proof sheet 28 is disposed on the outer surface side of the top sheet 26. The leak-proof sheet 28 is positioned on the both side portions 22 and extends in the vertical direction, and the free portion 52 extends in the vertical direction in parallel with the fixed side portion 51 and has an upright orientation above the topsheet 26. And fixed both end portions 53 located at both end portions 21 and lying inward in the lateral direction of the article 20A. The fixed side portion 51 and the free portion 52 extend between both end portions 21 of the article 20A. A stretchable elastic member 54 extending in the vertical direction is attached above the free portion 52 so as to be shrinkable. The elastic member 54 is fixed to the free portion 52 in a state where the elastic member 54 is extended in the vertical direction at a predetermined magnification. In the leak-proof sheet 28, the free portion 52 contracts in the vertical direction by the contraction force of the elastic member 54, and the free portion 52 stands up above the top sheet 26 to form a barrier against excrement.

  Both end portions 21 are formed from end portions 55 and 56 of front and back sheets 26 and 27 extending from the end edge 34 of the core 29 in the longitudinal direction outward and a fixed end portion 53 of the leak-proof sheet 28. At both end portions 21, the end portions 55, 56 of the front and back sheets 26, 27 overlap the end portion 53 of the leak-proof sheet 28, and the inner surfaces of the front and back sheets 26, 27 are fixed to each other. The inner surface of the leakage sheet 28 is fixed. A plurality of waistline elastic members 57 are attached to the end portion 21 so as to be retractable, being positioned outwardly in the longitudinal direction of the edge 34 of the core 29 and extending in the lateral direction. The waist elastic member 57 is interposed between the end portion 55 of the top sheet 26 and the end portion 56 of the back sheet 27, and is fixed to the inner surfaces of the sheets 26 and 27 in a state of being stretched at a predetermined magnification in the lateral direction. Has been.

  Both side portions 22 are formed by side portions 58 and 59 of front and back sheets 26 and 27 extending laterally outward from the side edge 35 of the core 29 and a fixed side portion 51 of the leak-proof sheet 28. In both side portions 22, the side portions 58 of the top sheet 26 slightly extend laterally outward from the side edges 35 of the core 29, and further laterally outward from the side portions 58 to the side portions 59 of the back sheet 27 and the leak-proof sheet. 28 side portions 51 extend. In the both side portions 22, the side portions 58 and 59 of the front and back sheets 26 and 27 and the side portion 51 of the leak-proof sheet 28 are overlapped, and the inner surfaces of the front and back sheets 26 and 27 are fixed to each other. The inner and outer surfaces and the inner surface of the leak-proof sheet 28 are fixed. A plurality of leg-around elastic members 60 extending in the vertical direction and extending in the vertical direction are attached to the both side portions 22 so as to be shrinkable. The leg-around elastic member 60 is interposed between the side portion 59 of the back sheet 27 and the fixed side portion 51 of the leak-proof sheet 28, and extends in a lateral direction at a predetermined magnification. It is fixed to the inner surface.

  A flexible tape fastener 61 formed of a fiber nonwoven fabric is attached to both side portions 22 of the rear waistline region 25. The tape fastener 61 has a fixed end 62 and a free end 63 that extend in the lateral direction. The fixed end portion 62 is interposed between the side portion 59 of the back sheet 27 and the fixed side portion 51 of the leak-proof sheet 28, and is fixed to the inner surfaces of the sheets 27 and 28. A hook member 64 is attached to the free end 63. The free end 63 may be coated with an adhesive coated with release paper instead of the hook member 64.

  A flexible target tape 65 for attaching the free end 63 of the tape fastener 61 detachably is attached to the front waistline region 23. The target tape 65 has a rectangular shape that is long in the lateral direction, and is formed of a plastic film 66 and a loop member 67 attached to the film 66 (see FIG. 5). The target tape 65 has a film 66 forming it fixed to the outer surface of the back sheet 27. When an adhesive is applied to the free end 63 of the tape fastener 61, a plastic film is used for the target tape 65.

5 and 6 are a perspective view of the article 20A of FIG. 1 shown in a worn state and a cross-sectional view taken along line 6-6 in FIG. In FIG. 6, a wearer is shown with a dashed-two dotted line. The procedure for wearing the article 20A is as follows. As the outer surface of the backsheet 45 of the outer surface and the pad 43 of the topsheet 26 is in contact, Ru place the pad 43 to the unit 36. When Ru Place the pad 43 to the unit 36, both end portions 47 of the pad 43 is located inside the end edges 38 of the unit 36, both side portions 48 of the pad 43 is located inside the side edges 39 of the unit 36 . After placing the pads 43 to the unit 36, placing the buttocks 74 of the wearer in the rear waist region 25, Ru place the front waist region 23 on the abdomen 72 by folding the crotch region 24. Next, both side portions 22 of the rear waist region 25 are overlapped on the outside of both side portions 22 of the front waist region 23, and the free end 63 of the tape fastener 61 is fixed to the target tape 65 via the hook member 64. The front waistline region 23 and the back waistline region 25 are connected. In the article 20A in which the front and rear waist regions 23 and 25 are coupled, a waist opening 68 and a pair of leg openings 69 are formed below the waist opening 68. In the article 20 </ b> A, the front waist region 23 abuts the wearer's abdomen 72, the crotch region 24 abuts the crotch portion 73, and the back waist region 25 abuts the buttocks 74 and the back 75. Excretion excreted while wearing the article 20 </ b> A passes through the top sheet 44 of the pad 43 and is absorbed by the core 46.

When the article 20A is worn, the first and second elastic members 40 and 41 are curved in a U shape at the crotch portion 73 of the wearer, and the elastic members 40 and 41 extend from the crotch portion 73 to the abdomen 72 of the wearer. And extending toward the flange 74. In the article 20A, the contraction force of the first and second elastic members 40 and 41 acts on substantially the entire placement portion 36, and the placement portion 36 is lifted toward the wearer's crotch portion 73 and placed on the placement portion 36. The entire pad 43 is lifted upward in the thickness direction of the article 20A. In the article 20A, since the skin contact surface of the pad 43 lifted by the contraction force of the elastic members 40 and 41 is located above the top sheet 26, the pad 43 is in close contact with the wearer's skin, and the pad 43 and the wearer There is no gap between the skin and the excrement can be reliably absorbed and retained by the pad 43. In the article 20A, the excrement leaking from the both ends 47 and both sides 48 of the pad 43 passes through the surface sheet 26 of the article 20A and is absorbed by the core 29 surrounding the arrangement part 36, so the excrement is absorbed in the article 20A. There is no leakage outside.

  In the article 20A, the pad 43 is lifted upward in the thickness direction of the article 20A by the contraction force of the elastic members 40 and 41. Therefore, even if the thickness dimension of the core 46 of the pad 43 is smaller than the thickness dimension of the core 29 of the article 20A. The pad 43 can be brought into close contact with the skin of the wearer, and the core 46 having a thickness smaller than that of the core 29 can be used for the pad 43, and the pad 43 can be prevented from being bulky. In the article 20A, the longitudinal end portions 42 of the first and second elastic members 40, 41 extend to the lower surface of the core 29 located in the front and rear waist regions 23, 25. Thus, the core 29 located in the front and rear waist regions 23 and 25 can be pressed against the skin of the wearer.

  The article 20 </ b> A has a step in the thickness direction of the article 20 </ b> A between the upper surface of the core 29 and the arrangement portion 36, and both end portions 47 and both side portions 48 of the pad 43 are positioned inside the inner peripheral wall 37 of the core 29. Therefore, the inner wall 37 of the core 29 prevents the pad 43 from moving in the vertical and horizontal directions, and the pad 43 can be prevented from being moved unintentionally while the article 20A is worn. When the wearer's body pressure is applied to the pad 43, the article 20 </ b> A exerts a force that pushes the arrangement part 36 downward in the thickness direction of the article 20 </ b> A from the pad 43 to the arrangement part 36. The article 43 is recessed downward in the thickness direction of the article 20A against the contraction force of the article 41, and the pad 43 is lowered downward in the thickness direction of the article 20A. Accordingly, the pad 43 is not bulky and there is no sense of incongruity with the worn article 20A.

In the article 20A, the rigidity value of the arrangement portion 36 is in the range of 0.1 to 2.0 mN · cm, preferably in the range of 0.8 to 1.5 mN · cm. If the rigidity value of the arrangement part 36 is less than 0.1 mN · cm, the arrangement part 36 contracts in the longitudinal direction more than necessary due to the contraction force of the elastic members 40 and 41, depending on the elongation stress of the elastic members 40 and 41, and the article. The vertical dimension of 20A may be reduced. When the rigidity value of the arrangement part 36 exceeds 2.0 mN · cm, the contraction force of the elastic members 40 and 41 is hindered by the rigidity of the arrangement part 36, and the contraction force of the elastic members 40 and 41 cannot be used. The pad 43 placed on the placement portion 36 cannot be lifted upward in the thickness direction of the article 20A. In addition, the rigidity value of the arrangement | positioning part 36 was measured based on the Gurley method (JISL1096-01-8.20.1). The measurement method is as follows.
(1) The arrangement portion 36 is cut from the article 20A, and a measurement sample having a vertical dimension of 25.0 mm and a horizontal dimension of 38.0 mm is created. A Gurley flexibility tester is used to measure the stiffness value.
(2) One end of the sample in the vertical direction is sandwiched between chucks of the tester, the other end of the sample in the vertical direction is placed on the pendulum of the tester, and an auxiliary weight is attached so that the scale of the tester is between 3 and 6. Switch on the tester, read the scale at the moment when the rotating rod of the pendulum leaves the sample, and measure the first stiffness value. Next, the other end in the vertical direction of the sample is sandwiched between chucks of the tester, one end in the vertical direction of the sample is placed on the pendulum of the tester, and an auxiliary weight is attached so that the scale of the tester is between 3 and 6. Turn on the tester, read the scale at the moment when the rotating rod of the pendulum leaves the sample, and measure the second stiffness value. The average of the measured first and second stiffness values is taken as the sample stiffness value. The measured stiffness value of the sample is 0.1 to 2.0 mN · cm, and the stiffness value of the sample is taken as the stiffness value of the placement portion 36.

In the article 20A, the elongation stress of the first and second elastic members 40 and 41 is in the range of 0.1 to 4.0 N. The extension stress of the elastic members 40 and 41 is the extension stress of one elastic member. When the elongation stress of the elastic members 40 and 41 is less than 0.1 N, the contraction force of the elastic members 40 and 41 does not act on the arrangement portion 36 and the elastic members 40 and 41 contract depending on the rigidity value of the arrangement portion 36. The pad 43 placed on the placement portion 36 cannot be lifted upward in the thickness direction of the article 20A using force. If the elongation stress of the elastic members 40 and 41 exceeds 4.0 N, the arrangement portion 36 may be unnecessarily contracted in the vertical direction due to the contraction force of the elastic members 40 and 41, and the vertical dimension of the article 20A may be reduced. In addition, the elongation stress of the elastic members 40 and 41 was measured by the following method.
(1) Prepare the same elastic member 40, 41 used for the article 20A as a measurement sample (one). For the tensile stress measurement, a tensile tester manufactured by Shimadzu Corporation was used.
(2) Both longitudinal ends of the sample are clamped by a chuck of a tensile tester (sample clamping dimension of the chuck: about 10 mm, dimension between the chucks of the sample: about 100 mm), and the sample is pulled longitudinally at a speed of 100 mm / min. After extending the sample to 300%, the extended state is released. Again, the sample is pulled in the longitudinal direction through the testing machine at a speed of 100 mm / min, the sample is stretched to 200%, and the force applied to the testing machine at that time is measured. The elongation stress of the sample is 0.1 to 4.0 N, and the elongation stress of the sample is one elongation stress of the elastic members 40 and 41. Here, elongating the sample to 200% means, for example, that when the dimension between chucks of the sample is 100 mm, the sample is extended to about 200 mm, which is a value obtained by multiplying 100 mm by 2.0.

7 and 8, a perspective view of another example of the disposable wearing article 20B shown in a state carrying the pad 43 to the unit 36, and a plan view of the article 20B of Fig. 7 showing in a state before the Ru placing the pad 43 9 and 10 are a sectional view taken along line 9-9 in FIG. 7 and a sectional view taken along line 10-10 in FIG. 7 and 8, the horizontal direction is indicated by an arrow L, the vertical direction is indicated by an arrow M, and the thickness direction is indicated by an arrow N (only in FIG. 7). FIG. 8 shows the article 20 </ b> B deployed in the vertical and horizontal directions against the contraction force of the elastic members 40, 41, 54, 57, and 60.

The article 20B has both end portions 21 extending in the horizontal direction and both side portions 22 extending in the vertical direction, and the front waist region 23 and the back waist region 25 in the vertical direction, and between the waist regions 23, 25. And a crotch region 24 located at the bottom. The article 20B is interposed between a liquid-permeable top sheet 26 and a liquid-impervious back sheet 27, a pair of liquid-impervious leak-proof sheets 28 extending in the vertical direction, and the front and back sheets 26 and 27. The liquid-absorbent core 29 is joined to the inner surfaces of 26 and 27. The article 20 </ b> B is an open-type disposable diaper similar to that of FIG. 1, and a pad 43 that absorbs and holds excrement is placed on the outer surface of the top sheet 26 and worn together with the pad 43.

  The top sheet 26 is formed from a hydrophilic fiber nonwoven fabric 30. The back sheet 27 is formed from the same composite sheet as that of FIG. The leak-proof sheet 28 is formed of a hydrophobic fiber nonwoven fabric 33 that has been subjected to water repellent treatment. The core 29 is the same mixture as that of FIG. 1 and is located in the front and rear waist regions 23 and 25 and the crotch region 24 and has both side edges 34 extending in the lateral direction and both side edges 35 extending in the vertical direction. The pad 43 is the same as that shown in FIG. 1, and is formed of a liquid-permeable top sheet 44 and a liquid-impervious back sheet 45, and a liquid-absorbent core 46 having a predetermined thickness interposed between the sheets 44 and 45. , Both end portions 47 extending in the horizontal direction and both side portions 48 extending in the vertical direction.

The transverse center of the front waist region 23 and the crotch region 24, the pad unit 36 of Ru carrying the pads 43 are defined. The arrangement portion 36 has a substantially rectangular shape that is long in the vertical direction, and extends from the crotch region 24 to the rear half of the front waistline region 23. The placement portion 36 is formed of a top sheet 26 and a back sheet 27 excluding the core 29, and is surrounded by an inner peripheral wall 37 of the core 29. The arrangement portion 36 has both side edges 38 extending in the lateral direction and both side edges 39 extending in the vertical direction, and the lateral length between the side edges 39 is the same as that in the lateral direction of the pad 43 or the pad 43. It is larger than that in the horizontal direction, and the length in the vertical direction between both end edges 38 is smaller than that in the vertical direction of the pad 43.

The top sheet 26 extends from the upper surface of the core 29 toward the lower surface along the inner peripheral wall 37 of the core 29, and the inner surface thereof is fixed to the inner peripheral wall 37 of the core 29. In the arrangement portion 36, the inner surfaces of the front and back sheets 26 and 27 are fixed to each other on the lower surface side of the core 29. The placement portion 36 is located on the lower surface side of the core 29, and a step according to the thickness dimension of the core 29 is formed between the upper surface of the core 29 and the placement portion 36. A plurality of first and second stretchable elastic members 40 and 41 extending in the vertical direction by forming an arc inwardly in the horizontal direction of the article 20B are attached to the arrangement portion 36 so as to be contractible.

  The first and second elastic members 40 and 41 are arranged inside the side edges 38 of the arrangement portion 36 and are arranged to be spaced apart and opposed in the lateral direction. The lateral separation dimension of the first and second elastic members 40 and 41 is the smallest at the center in the longitudinal direction of the arrangement portion 36. These elastic members 40, 41 run vertically through the placement portion 36, reach the front half of the front waistline region 23 and the back waistline region 25 beyond both end edges 39 of the placement portion 36. The elastic members 40 and 41 extending to the placement portion 36 are interposed between the top sheet 26 and the back sheet 27 and are fixed to the inner surfaces of the sheets. The longitudinal end portions 42 of the elastic members 40 and 41 extend to the lower surface of the core 29 located in the front and rear waist regions 23 and 25, and are interposed between the inner surface of the back sheet 27 and the lower surface of the core 29, It is fixed to the inner surface of the back sheet 27.

  The leak-proof sheet 28 is positioned at both side portions 21, a fixed side portion 51 that extends in the vertical direction, a free portion 52 that extends in the vertical direction with an upright orientation above the topsheet 26, and both end portions 22. And both fixed end portions 53 lying inward in the lateral direction of the article 20B. A stretchable elastic member 54 extending in the vertical direction is attached above the free portion 52 so as to be shrinkable. In the leak-proof sheet 28, the free portion 52 erected above the top sheet 26 by the contraction force of the elastic member 54 forms a barrier against excrement.

  Both end portions 21 are formed from end portions 55 and 56 of front and back sheets 26 and 27 extending from the end edge 34 of the core 29 in the longitudinal direction outward and a fixed end portion 53 of the leak-proof sheet 28. At both end portions 21, the end portions 55 and 56 and the fixed end portion 53 overlap, the inner surfaces of the front and back sheets 26 and 27 are fixed, and the outer surface of the top sheet 26 and the inner surface of the leak-proof sheet 28 are fixed. . A plurality of waist elastic members 57 extending in the lateral direction are attached to the end portion 21 so as to be shrinkable.

  Both side portions 22 are formed by side portions 58 and 59 of front and back sheets 26 and 27 extending laterally outward from the side edge 35 of the core 29 and a fixed side portion 51 of the leak-proof sheet 28. In the both side portions 22, the side portions 58 slightly extend laterally outward from the side edges 35 of the core 29, and the side portions 59 and 51 extend further laterally outward from the side portions 58. In both side portions 22, the side portions 51, 58, and 59 are overlapped, the inner surfaces of the front and back sheets 26 and 27 are fixed, and the inner and outer surfaces of the front and back sheets 26 and 27 and the inner surface of the leak-proof sheet 28 are fixed. . A plurality of leg-around elastic members 60 extending in the vertical direction are attached to both side portions 22 so as to be shrinkable.

  A flexible tape fastener 61 formed of a fiber nonwoven fabric is attached to both side portions 22 of the rear waistline region 25. The fixed end portion 62 of the tape fastener 61 is interposed between the side portion 59 of the back sheet 27 and the fixed side portion 51 of the leak-proof sheet 28 and is fixed to the inner surfaces of the sheets 27 and 28. A hook member 64 is attached to the inner surface of the free end portion 63 of the tape fastener 61. A flexible target tape 65 for attaching the free end 63 of the tape fastener 61 detachably is attached to the front waistline region 23. The target tape 65 is formed of a plastic film 66 and a loop member 67 attached to the film 66 (see FIG. 11).

11 and 12 are a perspective view of the article 20B of FIG. 7 shown in a worn state and a cross-sectional view taken along line 12-12 of FIG. In FIG. 12, a wearer is shown with a dashed-two dotted line. The procedure for wearing this article 20B is the same as that of FIG. 1, and the description thereof is omitted. However, in this article 20B, the Ru place the pad 43 to the unit 36, the overlap above the core 29 extending in the front and rear waist regions 23, 25 at both end portions 47 of the pad 43 across the topsheet 26, the pad 43 Both side portions 48 are located inside the side edges 39 of the arrangement portion 36.

When the article 20B is worn, the first and second elastic members 40 and 41 are curved in a U shape at the crotch portion 73 of the wearer, and the elastic members 40 and 41 extend from the crotch portion 73 to the wearer's abdomen 72. And extending toward the flange 74. In the article 20 </ b> B, the contraction force of the first and second elastic members 40 and 41 acts on substantially the entire placement portion 36, and the entire placement portion 36 acts on the crotch portion 73 of the wearer due to the contraction force of the elastic members 40 and 41. The entire pad 43 placed on the placement portion 36 is lifted upward in the thickness direction of the article 20B, so that the entire pad 43 can be brought into close contact with the wearer's skin. In the article 20B, since the skin contact surface of the pad 43 lifted by the contraction force of the elastic members 40 and 41 is located above the top sheet 26, the pad 43 is in close contact with the wearer's skin, and the pad 43 and the wearer There is no gap between the skin and the excrement can be reliably absorbed and retained by the pad 43. In the article 20B, since the first and second elastic members 40 and 41 form an arc inwardly in the lateral direction of the article 20B in the arrangement portion 36, the elastic members 40 and 41 are curved in the crotch portion 73 of the wearer. The pad placement portion 36 is lifted toward the crotch portion 73 and the pad 43 is lifted toward the crotch portion 73, so that the pad 43 can be securely adhered to the crotch portion 73.

  In the article 20B, the excrement leaking from the both ends 47 and both sides 48 of the pad 43 passes through the surface sheet 26 of the article 20B and is absorbed by the core 29 surrounding the arrangement portion 36, so the excrement is absorbed in the article 20B. There is no leakage outside. In the article 20B, the longitudinal end portions 42 of the first and second elastic members 40, 41 extend to the lower surface of the core 29 located in the front and rear waist regions 23, 25. As a result, the core 29 located in the front and rear waist areas 23 and 25 can be pressed against the skin of the wearer, and both end portions 47 of the pad 43 can be pressed against the wearer's skin.

  The article 20B has a step in the thickness direction of the article 20B between the upper surface of the core 29 and the arrangement portion 36, and both side portions 48 of the pad 43 are located inside the inner peripheral wall 37 of the core 29. The inner peripheral wall 37 prevents the pad 43 from moving in the lateral direction, and the pad 43 can be prevented from moving in the lateral direction while the article 20B is worn. When the wearer's body pressure is applied to the pad 43, the article 20 </ b> B exerts a force that pushes the arrangement part 36 downward in the thickness direction of the article 20 </ b> B from the pad 43 to the arrangement part 36. The article 43 is dented downward in the thickness direction against the contraction force, and the pad 43 is lowered downward in the thickness direction of the article 20B. Accordingly, the pad 43 is not bulky and there is no sense of incongruity with the worn article 20B.

In the article 20B, the rigidity value of the placement portion 36 is in the range of 0.1 to 2.0 mN · cm. If the rigidity value of the arrangement part 36 is less than 0.1 mN · cm, the arrangement part 36 may shrink more than necessary in the vertical direction due to the contraction force of the elastic members 40 and 41, and the vertical dimension of the article 20 </ b> B may be reduced. When the rigidity value of the arrangement part 36 exceeds 2.0 mN · cm, the contraction force of the elastic members 40 and 41 is hindered by the rigidity of the arrangement part 36, and the pad placed on the arrangement part 36 by the contraction force of the elastic members 40 and 41. 43 cannot be lifted upward in the thickness direction of the article 20B. The rigidity value of the arrangement part 36 was measured in accordance with the Gurley method (JIS L 1096-01-8.20.1). The measuring method is the same as that of the article 20A of FIG.

In the article 20B, the elongation stress of the elastic members 40 and 41 is in the range of 0.1 to 4.0 N. The extension stress of the elastic members 40 and 41 is the extension stress of one elastic member. When the elongation stress of the elastic members 40 and 41 is less than 0.1 N, the contraction force of the elastic members 40 and 41 does not act on the arrangement part 36 and is placed on the arrangement part 36 using the contraction force of the elastic members 40 and 41. The pad 43 cannot be lifted upward in the thickness direction of the article 20B. When the elongation stress of the elastic members 40 and 41 exceeds 4.0 N, the arrangement portion 36 may be unnecessarily contracted in the vertical direction due to the contraction force of the elastic members 40 and 41, and the vertical dimension of the article 20B may be reduced. In addition, the measuring method of the extensional stress of the elastic members 40 and 41 is the same as that of the article 20A in FIG.

13 and 14, a perspective view of another example of the disposable wearing article 20C showing a state carrying the pad 43 to the unit 36, and a plan view of the article 20C of Fig. 13 shown in the previous state of Ru placing the pad 43 15 and 16 are a sectional view taken along line 15-15 in FIG. 13 and a sectional view taken along line 16-16 in FIG. 13 and 14, the horizontal direction is indicated by an arrow L, the vertical direction is indicated by an arrow M, and the thickness direction is indicated by an arrow N (FIG. 13 only). FIG. 14 shows the article 20 </ b> C deployed in the vertical and horizontal directions against the contraction force of the elastic members 54, 57, 60, and 70.

The article 20 </ b> C has both end portions 21 extending in the lateral direction and both side portions 22 extending in the vertical direction, and the front waistline region 23 and the back waistline region 25 in the longitudinal direction, and between these waistline regions 23, 25. And a crotch region 24 located at the bottom. The article 20 </ b> C is interposed between a liquid-permeable top sheet 26 and a liquid-impervious back sheet 27, a pair of liquid-impervious leak-proof sheets 28 extending in the vertical direction, and the front and back sheets 26 and 27. The liquid-absorbent core 29 is joined to the inner surfaces of 26 and 27. The article 20 </ b> C is an open-type disposable diaper similar to that of FIG. 1, and a pad 43 that absorbs and holds excrement is placed on the outer surface of the top sheet 26 and worn together with the pad 43.

  The top sheet 26 is formed from a hydrophilic fiber nonwoven fabric 30. The back sheet 27 is formed from the same composite sheet as that of FIG. The leak-proof sheet 28 is formed of a hydrophobic fiber nonwoven fabric 33 that has been subjected to water repellent treatment. The core 29 is the same mixture as that of FIG. 1 and is located in the front and rear waist regions 23 and 25 and the crotch region 24 and has both side edges 34 extending in the lateral direction and both side edges 35 extending in the vertical direction. The pad 43 is the same as that shown in FIG. 1, and is formed of a liquid-permeable top sheet 44 and a liquid-impervious back sheet 45, and a liquid-absorbent core 46 having a predetermined thickness interposed between the sheets 44 and 45. , Both end portions 47 extending in the horizontal direction and both side portions 48 extending in the vertical direction.

The lateral center of the crotch region 24, the pad unit 36 of the long substantially rectangular to the longitudinal direction of Ru carrying the pads 43 are defined. The placement portion 36 is formed of a top sheet 26 and a back sheet 27 excluding the core 29, and is surrounded by an inner peripheral wall 37 of the core 29. The disposition portion 36 has both side edges 38 extending in the lateral direction and both side edges 39 extending in the vertical direction. The lateral length between the side edges 39 is smaller than that in the lateral direction of the pad 43, The longitudinal length between the edges 38 is smaller than that of the pad 43 in the longitudinal direction.

The top sheet 26 extends from the upper surface of the core 29 toward the lower surface along the inner peripheral wall 37 of the core 29, and the inner surface thereof is fixed to the inner peripheral wall 37 of the core 29. In the arrangement portion 36, the inner surfaces of the front and back sheets 26 and 27 are fixed to each other on the lower surface side of the core 29. The placement portion 36 is located on the lower surface side of the core 29, and a step according to the thickness dimension of the core 29 is formed between the upper surface of the core 29 and the placement portion 36. A plurality of stretchable elastic members 70 extending linearly in the vertical direction are attached to the placement portion 36 so as to be shrinkable. The elastic member 70 is arranged at the center in the lateral direction of the arrangement part 36, cuts the arrangement part 36 vertically, reaches the front and rear waist areas 23, 25 beyond both end edges 39 of the arrangement part 36. The elastic member 70 is interposed between the film 31 forming the back sheet 27 and the nonwoven fabric 32, and is fixed to the film 31 and the nonwoven fabric 32. Both ends 71 in the longitudinal direction of the elastic member 70 extend to the lower surface side of the core 29 located in the front and rear waist regions 23 and 25.

  The leak-proof sheet 28 is positioned at both side portions 21, a fixed side portion 51 that extends in the vertical direction, a free portion 52 that extends in the vertical direction with an upright orientation above the topsheet 26, and both end portions 22. And both fixed end portions 53 lying inward in the lateral direction of the article 20B. A stretchable elastic member 54 extending in the vertical direction is attached above the free portion 52 so as to be shrinkable. In the leak-proof sheet 28, the free portion 52 erected above the top sheet 26 by the contraction force of the elastic member 54 forms a barrier against excrement.

  Both end portions 21 are formed from end portions 55 and 56 of front and back sheets 26 and 27 extending from the end edge 34 of the core 29 in the longitudinal direction outward and a fixed end portion 53 of the leak-proof sheet 28. At both end portions 21, the end portions 55 and 56 and the fixed end portion 53 overlap, the inner surfaces of the front and back sheets 26 and 27 are fixed, and the outer surface of the top sheet 26 and the inner surface of the leak-proof sheet 28 are fixed. . A plurality of waist elastic members 57 extending in the lateral direction are attached to the end portion 21 so as to be shrinkable.

  Both side portions 22 are formed by side portions 58 and 59 of front and back sheets 26 and 27 extending laterally outward from the side edge 35 of the core 29 and a fixed side portion 51 of the leak-proof sheet 28. In the both side portions 22, the side portions 58 slightly extend laterally outward from the side edges 35 of the core 29, and the side portions 59 and 51 extend further laterally outward from the side portions 58. In both side portions 22, the side portions 51, 58, and 59 are overlapped, the inner surfaces of the front and back sheets 26 and 27 are fixed, and the inner and outer surfaces of the front and back sheets 26 and 27 and the inner surface of the leak-proof sheet 28 are fixed. . A plurality of leg-around elastic members 60 extending in the vertical direction are attached to both side portions 22 so as to be shrinkable.

  A flexible tape fastener 61 formed of a fiber nonwoven fabric is attached to both side portions 22 of the rear waistline region 25. The fixed end portion 62 of the tape fastener 61 is interposed between the side portion 59 of the back sheet 27 and the fixed side portion 51 of the leak-proof sheet 28 and is fixed to the inner surfaces of the sheets 27 and 28. A hook member 64 is attached to the inner surface of the free end portion 63 of the tape fastener 61. A flexible target tape 65 for attaching the free end 63 of the tape fastener 61 detachably is attached to the front waistline region 23. The target tape 65 is formed of a plastic film 66 and a loop member 67 attached to the film 66 (see FIG. 17).

17 and 18 are a perspective view of the article 20C of FIG. 13 shown in a worn state and a cross-sectional view taken along line 18-18 in FIG. In FIG. 18, a wearer is shown with a dashed-two dotted line. The procedure for wearing the article 20C is the same as that in FIG. 1, and the description thereof is omitted. However, in this article 20C, the Ru place the pad 43 to the unit 36, the overlap above the core 29 extending in the front and rear waist regions 23, 25 at both end portions 47 of the pad 43 across the topsheet 26, the pad 43 Both side portions 48 overlap above the core 29 extending on both sides of the arrangement portion 36 with the surface sheet 26 interposed therebetween.

  When the article 20C is worn, the elastic member 70 is curved in a U shape at the crotch portion 73 of the wearer, and the elastic member 70 extends from the crotch portion 73 toward the abdomen 72 and the buttocks 74 of the wearer. In the article 20C, the contraction force of the elastic member 70 acts on the arrangement part 36, the arrangement part 36 is lifted toward the wearer's crotch part 73, and the pad 43 is lifted upward in the thickness direction of the article 20C. In the article 20C, since the skin contact surface of the pad 43 lifted by the contraction force of the elastic member 70 is located above the top sheet 26, the pad 43 is in close contact with the wearer's skin, and the pad 43 and the wearer's skin The excrement can be surely absorbed and held by the pad 43 without any gap between them.

  In the article 20C, the longitudinal end portions 71 of the elastic member 70 extend to the lower surface of the core 29 located in the front and rear waist regions 23 and 25, and therefore the article 20C is positioned in the front and rear waist regions 23 and 25 by the contraction force of the elastic member 70. The core 29 to be pressed can be pressed against the skin of the wearer, and both end portions 47 of the pad 43 can be pressed against the wearer's skin. In the article 20 </ b> C, both side portions 48 of the pad 43 are positioned above the core 29 positioned on both sides of the arrangement portion 36, so that both side portions 48 can be pressed against the wearer's skin.

In the article 20C, the rigidity value of the placement portion 36 is in the range of 0.1 to 2.0 mN · cm. If the rigidity value of the arrangement part 36 is less than 0.1 mN · cm, the arrangement part 36 may contract more than necessary in the vertical direction due to the contraction force of the elastic member 70, and the vertical dimension of the article 20 </ b> C may be reduced. When the rigidity value of the placement portion 36 exceeds 2.0 mN · cm, the contraction force of the elastic member 70 is hindered by the rigidity of the placement portion 36, and the pad 43 placed on the placement portion 36 is placed on the placement portion 36 by the contraction force of the elastic member 70. Cannot be lifted upward in the thickness direction. The rigidity value of the arrangement part 36 was measured in accordance with the Gurley method (JIS L 1096-01-8.20.1). The measuring method is the same as that of the article 20A of FIG.

In the article 20C, the elongation stress of the elastic member 70 is in the range of 0.1 to 4.0N. The elongation stress of the elastic member 70 is the elongation stress of one elastic member. When the elongation stress of the elastic member 70 is less than 0.1 N, the contraction force of the elastic member 70 does not act on the placement portion 36, and the pad 43 placed on the placement portion 36 using the contraction force of the elastic member 70 is used. It cannot be lifted upward in the thickness direction. When the elongation stress of the elastic member 70 exceeds 4.0 N, the arrangement portion 36 may be unnecessarily contracted in the vertical direction due to the contraction force of the elastic member 70, and the vertical dimension of the article 20C may be reduced. The method for measuring the elongation stress of the elastic member 70 is the same as that of the article 20A in FIG.

  In these articles 20 </ b> A, 20 </ b> B, 20 </ b> C, the arrangement portion 36 is defined by the front and rear waist regions 23, 25 and the crotch region 24, but the placement portion 36 includes the front half of the crotch region 24 and the front waist region 23. The rear half may be defined, and the arrangement portion 36 may be defined in the rear half of the crotch region 24 and the front half of the rear waistline region 25. These articles 20A, 20B, and 20C reach the lower surface of the core 29 where the first and second elastic members 40 and 41 and the elastic member 70 are located in the front and rear waist regions 23 and 25 beyond both end edges 38 of the arrangement portion 36. However, these elastic members 40, 41, 70 may extend only to the arrangement portion 36.

  In addition to the hydrophilic fiber nonwoven fabric, any one of a hydrophobic fiber nonwoven fabric having many openings and a plastic film having many fine openings can be used for the topsheets 26 and 44. For the back sheets 27 and 45, any of a hydrophobic fiber nonwoven fabric, a gas-impermeable liquid-impervious plastic film, and a composite nonwoven fabric obtained by laminating two or more hydrophobic fiber nonwoven fabrics can be used. Natural rubber or synthetic rubber can be used for the elastic members 40, 41, 54, 57, 60 and 70. For the back sheets 27 and 45 and the leak-proof sheet 28, a composite nonwoven fabric (SM nonwoven fabric, SMS nonwoven fabric) in which a spunbond nonwoven fabric having high strength and good flexibility is superposed on both sides or one side of a melt-blown nonwoven fabric having high water resistance. SMMS nonwoven fabric) can also be used.

  As the fiber nonwoven fabric, a nonwoven fabric produced by each method of spunlace, needle punch, melt blown, thermal bond, spunbond, and chemical bond can be used. Polyester-based, polyacrylonitrile-based, polyvinyl chloride-based, polyethylene-based, polypropylene-based, and polystyrene-based fibers can be used for the constituent fibers of the nonwoven fabric. As the constituent fibers, core-sheath type composite fibers, parallel type composite fibers, atypical hollow fibers, microporous fibers, and bonded type composite fibers can also be used.

  Adherence between the front and back sheets 26, 27, 44, 45, bonding of the cores 29, 46 to the sheets 26, 27, 44, 45, adhesion of the leak-proof sheet 28 to the sheets 26, 27, sheets 26, 27, 28, 44 , 45 can be bonded to the elastic members 40, 41, 54, 57, 60, 70 using an adhesive or heat welding means such as heat seal or sonic seal. As the adhesive, a hot-melt adhesive, an acrylic adhesive, or a rubber adhesive can be used.

  It is preferable that the adhesive is applied to the top sheets 26 and 44, the back sheets 27 and 45, and the leak-proof sheet 28 in any one of a spiral shape, a wave shape, a zigzag shape, a dot shape, and a stripe shape. When the adhesive is applied to the sheets 26, 27, 28, 44, 45 in those modes, the application area where the adhesive is applied to the sheets 26, 27, 28, 44, 45 and the non-adhesive is not applied. An application region is formed, the sheets 26, 27, 28, 44, 45 are intermittently fixed, the cores 29, 46 are intermittently joined to the sheets 26, 27, 44, 45, and an elastic member 40, 41, 54, 57, 60, 70 are intermittently fixed to the sheets 26, 27, 28, 44, 45.

The perspective view of the disposable wearing article shown in the state which mounted the pad on the arrangement | positioning part. Plan view of the article of Figure 1 showing in the state before Ru placing the pad. FIG. 3 is a cross-sectional view taken along line 3-3 in FIG. 1. FIG. 4 is a cross-sectional view taken along line 4-4 in FIG. 1. The perspective view of the article | item of FIG. 1 shown in a wearing condition. FIG. 6 is a cross-sectional view taken along line 6-6 in FIG. The perspective view of the disposable wear article | item of another example shown in the state which mounted the pad on the arrangement | positioning part. Plan view of the article of Figure 7 showing in a state before the Ru placing the pad. FIG. 9 is a cross-sectional view taken along line 9-9 in FIG. 7. FIG. 10 is a cross-sectional view taken along line 10-10 in FIG. The perspective view of the article | item of FIG. 7 shown by a wearing condition. FIG. 12 is a cross-sectional view taken along line 12-12 in FIG. 11. The perspective view of the disposable wear article | item of another example shown in the state which mounted the pad on the arrangement | positioning part. Plan view of the article of Figure 13 shown in a state before the Ru placing the pad. FIG. 15 is a cross-sectional view taken along line 15-15 in FIG. 13. FIG. 16 is a cross-sectional view taken along line 16-16 in FIG. 13. The perspective view of the article | item of FIG. 13 shown by a wearing condition. FIG. 18 is a cross-sectional view taken along line 18-18 in FIG. 17.

Explanation of symbols

20A Disposable wearing article 20B Disposable wearing article 20C Disposable wearing article 21 Both ends 22 Both sides 23 Front waist circumference area 24 Inseam area 25 Rear waist circumference area 26 Liquid permeable surface sheet 27 Liquid impervious back sheet 28 Liquid impervious prevention Leaky sheet 29 Absorbent core 34 Both edges 35 Both edges 36 Arrangement part 37 Inner peripheral wall 38 Both edges 39 Both edges 40 First stretchable elastic member 41 Second stretchable elastic member 42 Both longitudinal ends 43 Pad 44 Liquid permeability Top sheet 45 Impervious back sheet 46 Absorbent core 47 Both ends 48 Both sides 70 Stretchable elastic member 71 Both ends in the longitudinal direction

Claims (2)

A liquid-permeable surface sheet located on the skin contact side, having a front waistline region and a back waistline region in the longitudinal direction, and a crotch region located between the waist regions, and a skin non-contact side A liquid-impervious back sheet positioned and a liquid-absorbent core having a predetermined thickness interposed between the sheets and extending between the front and rear waist areas, and at least a central portion of a pad for absorbing and holding excrement In the disposable wearing article to be equipped with the pad, the concaved pad arrangement portion to be positioned on the surface sheet,
The pad placement portion is formed from the front and back sheets excluding the core and is surrounded by the core, and is defined at least in the lateral center of the crotch region between the front and rear waistline region and the crotch region. A first elastic elastic member and a second elastic elastic member that are spaced apart from each other in the horizontal direction and extend in the vertical direction are attached to the pad placement portion so as to be retractable, and are attached to the first and second elastic properties. The elastic member forms an arc inwardly in the lateral direction of the article, and a lateral separation dimension of the first and second elastic elastic members is minimized at a longitudinal center of the pad placement portion; Both longitudinal ends of the first and second elastic members extend to the lower surface side of the core located in the front-rear waist region, and the elongation stress of the elastic member is in the range of 0.1 to 4.0 N. Yes,
The top sheet extends from the top surface of the core toward the bottom surface along the inner peripheral wall of the core surrounding the pad placement portion, and the front and back sheets positioned in the placement portion are mutually on the bottom surface side of the core. A step according to the thickness dimension of the core is formed between the upper surface of the core and the placement portion;
The wearing article, wherein the placement portion has a rigidity value in a range of 0.1 to 2.0 mN · cm.   The pad arrangement part has a rectangular shape that is long in the vertical direction, and the horizontal length dimension of the arrangement part is the same as or slightly larger than that of the pad in the horizontal direction. 1. The wearing article according to 1.

Images