JP3211463U - Disposable wearing items - Google Patents

Abstract

Provided is a wearable article capable of effectively preventing side leakage of excrement by an absorbent part having a propensity for standing, and capable of bending the part of a liquid absorption structure to reliably stand the absorbent part. To do. A liquid-absorbing structure includes a liquid-absorbing core, a first absorbent part located at least in a crotch region, and a second absorbent part located outside the first absorbent part in the lateral direction. And the 2nd absorption part is bend | folded to the skin opposing surface side of the 1st absorption part, and the both ends spaced apart in the vertical direction are being fixed to the 1st absorption part. The second absorbent portion 42 is provided with a side elastic body 38 extending in the vertical direction. The liquid absorbing core is located in the bent portion, and at least part of the second absorbent portion 42 is arranged in the vertical direction. A concave bending guide 48 formed by embossing is located. [Selection] Figure 6

Description

  The present invention relates to disposable wearing articles such as disposable toilet training pants, disposable incontinence pants, and disposable sanitary pants.

  Conventionally, disposable wearing articles provided with means for preventing side leakage of body fluid are known. For example, Patent Document 1 includes a diaper body having a front and rear waist region and a crotch region, and a liquid absorption structure, and the liquid absorption structure is disposed at least in the crotch region, and a first absorption part. Disposable diapers having a second absorbent part positioned on a leak-proof wall standing on both sides of the part are disclosed.

Japanese Utility Model Publication No. 6-17724

  In the disposable diaper which concerns on the device disclosed by patent document 1, in the wearing state of a diaper, it stands up so that a leak-proof wall separates from the 1st absorption part, and the 2nd absorption part is contacted with a wearer's groin part. The fit to the wearer's body is improved and the side leakage of excreta is prevented.

  However, since the leak-proof wall located between the first absorbent part and the second absorbent part is formed of a hydrophobic fiber nonwoven fabric and does not have liquid absorbency, a relatively large amount of body fluid is excreted. In some cases, body fluid may leak out of the liquid absorbing structure. On the other hand, in order to prevent such disadvantages, the first absorbent part and the second absorbent part may be formed of a continuous liquid absorbing structure and the second absorbent part may be erected by bending a part thereof. However, in that case, since the liquid absorbing structure has a required thickness dimension, it is difficult to bend at the bent portion in the manufacturing process, and part of the liquid absorbing structure will be broken if it is forced to bend. There is a fear.

  The problem of the present invention is that it is possible to effectively prevent the side leakage of excrement by the absorption part having a propensity to stand, and to be able to reliably stand the absorption part by bending a part of the liquid absorption structure. It relates to the provision of worn articles.

  In order to solve the above-mentioned problems, the present invention provides a crotch located between a longitudinal direction and a transverse direction perpendicular thereto, a skin facing surface and a clothing facing surface, a front waist region, a rear waist region, and the front and rear waist regions. The present invention relates to a disposable wearing article including a region and a liquid absorbing structure disposed at least in the crotch region.

  In the disposable wearing article according to the present invention, the liquid-absorbing structure includes a liquid-absorbent core, a first absorbent portion located at least in the crotch region, and a first outer portion located laterally outside the first absorbent portion. 2 absorption portions, the second absorption portion has a portion bent toward the skin facing surface side of the first absorption portion, and both end portions separated in the longitudinal direction are the first absorption portions. A side elastic body extending in the longitudinal direction is disposed in the second absorption portion, and the liquid-absorbing core is located in the bent portion, and at least one A concave bending guide portion formed by embossing, which extends in the vertical direction, is located in the portion.

  According to the disposable wearing article according to the present invention, the liquid absorbing structure has a first absorbent part composed of the central part thereof, and a second absorbent part bent toward the skin facing surface side of the first absorbent part. In addition, since at least a part of the bent portion is provided with a concave bending guide portion formed by embossing, the bending process at the time of manufacture is easy and the posture of the wearer is changed. However, there is no fear that the bending will be released during wearing, and the standing state of the second absorption part can be maintained and the side leakage of body fluid can be reliably prevented.

The front view of the disposable diaper in 1st Embodiment shown as an example of the disposable wearing article which concerns on this invention. The partially broken expanded view of a diaper in the state which extended each elastic body to the vertical direction and the horizontal direction of a diaper. The exploded perspective view of a diaper. (A) The partially broken expansion | deployment perspective view of a liquid absorption structure. (B) The partially broken perspective view of a liquid absorption structure. (A) The elements on larger scale enclosed with the dashed-dotted line V (a) in FIG. 4 (a). (B) A schematic cross-sectional view along V (b) shown in FIG. FIG. 3 is a schematic cross-sectional view taken along line VI-VI in FIG. 2. FIG. 7 is a partially enlarged view of a portion surrounded by an alternate long and short dash line VII in FIG. 6. The top view of a liquid absorption structure which shows only a joining area | region with a coating sheet by dot shape. The enlarged view of the leg opening periphery in the wearing condition of a diaper. FIG. 10 is a schematic cross-sectional view taken along line XX in FIG. 9. The top view of the liquid absorption structure of the diaper which concerns on 2nd Embodiment. (A) The partial fracture expansion | deployment perspective view of the liquid absorption structure of the diaper which concerns on 3rd Embodiment. (B) The partially broken perspective view of the liquid absorption structure of the diaper which concerns on 3rd Embodiment. Typical sectional drawing which follows the XIII-XIII line | wire shown in FIG. The top view of the liquid absorption structure of the diaper which concerns on 4th Embodiment. FIG. 15 is a schematic cross-sectional view taken along line XV-XV in FIG. 14.

  1-3, the underpants type diaper 10 shown as an example of the disposable wearing article of the present invention has a longitudinal direction Y and a transverse direction X orthogonal thereto, and a longitudinal center that bisects the dimension of the transverse direction X. It has a line P and a transverse center line Q that bisects the dimension in the longitudinal direction Y, and includes an absorption chassis 11 and an annular elastic waist panel 12.

  The diaper 10 includes a skin facing surface and an opposite clothing facing surface, a front waist region 13, a rear waist region 14, a crotch region 15 located between the front and rear waist regions 13, 14, a waist opening and a pair of Leg opening 16. The waist opening is defined by an annular elastic waist panel 12, and the pair of leg openings 16 is defined by an absorption chassis 11 and an annular elastic waist panel 12.

<Elastic waist panel>
Referring to FIG. 2, the elastic waist panel 12 includes a front waist panel 18 located in the front waist region 13 and a rear waist panel 19 located in the rear waist region 14. The front and rear waist panels 18 and 19 are opposed to the intermediate inner end edges 18a and 19a in the longitudinal direction Y while crossing the front and rear end parts 30 and 31 of the absorbent chassis 11 and extending in the lateral direction X. The outer edges 18b and 19b extending in the lateral direction X, the outer edges 18c and 19c extending downward from the outer edges 18b and 19b, and the outer edges 18c and 19c and the intermediate inner edges 18a and 19a are connected. A substantially trapezoidal shape is formed by the concavely curved inner edges 18d and 19d. Each of the outer edge 18c of the front waist panel 18 and the outer edge 19c of the rear waist panel 19 are overlapped with each other and connected by a side seam 20 extending intermittently in the longitudinal direction Y, thereby forming a waist opening and a pair of legs. An opening 16 is defined. In the side seam 20, sheets that overlap each other are fused by embossing with heat or ultrasonic waves.

<Front and rear waist panels>
Referring to FIG. 2, the front and rear waist panels 18 and 19 include inner layer sheets 21 and 22 positioned on the skin facing surface side, outer layer sheets 23 and 24 positioned on the clothing facing surface side, and a plurality of strips extending in the lateral direction X. It has front and rear waist elastic bodies 25 and 26 which are formed of a string-like or strand-like elastic material and attached so as to be shrinkable in a stretched state between the inner and outer layer sheets 21 to 24 via a hot melt adhesive.

  The front waist elastic body 25 is composed of an upper front waist elastic body 25A extending in the lateral direction X along the outer edge 18b of the front waist panel 18 and a pair of lower front waist elastic bodies disposed to face each other in the lateral direction X. 25B. The rear waist elastic body 26 includes an upper rear waist elastic body 26 </ b> A extending in the lateral direction X along the outer edge 19 b of the rear waist panel 19 and a pair of intermediate rear waist elastic bodies disposed to face each other in the lateral direction X. 26B and a pair of lower rear waist elastic bodies 26C that extend in a concave manner along the inner edge 19d and that are spaced apart from each other in the lateral direction X.

  The various sheets constituting the front and rear waist panels 18, 19, that is, the inner and outer layer sheets 21, 22, 23, 24, are known fiber nonwoven fabrics such as spunbond fiber nonwoven fabrics or SMS (spunbond / meltblown / spunbond) fiber nonwoven fabrics. It can be formed from a laminate sheet of a plastic film and a nonwoven fabric. The sheets laminated on each other are bonded to each other by a hot melt adhesive applied intermittently to at least one of the inner surfaces or the heat welding means. The front and rear waist elastic bodies 25, 26 have a fineness of about 300 to 1200 dtex, and are stretched about 1.8 to 3.5 times from the contracted or relaxed state and fixed in a string or strand form. Can be formed from

<Absorption chassis>
Referring to FIG. 2, the absorption chassis 11 has a vertically long and substantially rectangular shape, and is connected to the skin facing surface of the front waist panel 18 and the skin end facing surface of the rear waist panel 19. It has an end portion 31 and an intermediate portion 32 that extends in the longitudinal direction Y between the front and rear end portions 30 and 31 and forms part of the crotch region 15.

  Referring to FIGS. 2 and 3, the absorption chassis 11 includes a liquid-absorbing structure 35 having a liquid-permeable body-side liner 33 and an absorber 34 coated on the body side, and a clothing-facing surface side of the absorber 34. And a hydrophobic covering sheet 36 located therein. The body side liner 33 can be formed from, for example, a spunbond fiber nonwoven fabric, an SMS fiber nonwoven fabric or the like that has been subjected to a hydrophilic treatment. The covering sheet 36 is formed from a hydrophobic SMS fiber nonwoven fabric or a spunbond nonwoven fabric. Between the covering sheet 36 and the liquid-absorbing structure 35, a leak-proof sheet 37 formed from a plastic film having air permeability and liquid impermeability is disposed. The leak-proof sheet 37 is an option, and in the present embodiment, the joining portions 70 and 71 described later are for joining the liquid absorbing structure 35 and the leak-proof sheet 37. When not disposed, the liquid absorbing structure 35 and the covering sheet 36 are joined.

The absorbent body 34 includes a liquid absorbent core 43 formed of an absorbent / discrete material such as fluff wood pulp and super absorbent polymer particles (SAP), and a mass of about 10 to 20 g / mass covering the entire liquid absorbent core. and a liquid-permeable core wrap sheet 44 formed of m ² tissue paper or the like.

  Referring to FIGS. 3, 4 (a), and 4 (b), the liquid absorption structure 35 is positioned on both sides of the first absorption portion (center portion) 41 and the first absorption portion 41 and extends in the vertical direction Y. It has a pair of bending lines 40 and a second absorption part (both side parts) 42 located on the outer side in the lateral direction X from the bending lines 40. The both side portions 42 are fixed via a front end fixing portion 45 and a rear end fixing portion 46 formed by applying a hot melt adhesive located on the first absorption portion 41 by being bent inward along the bending line 40. The A plurality of side elastic bodies 38 are attached to the surface of the second absorbent portion 42 opposite to the surface where the front and rear end fixing portions 45 and 46 are located. In this way, the side elastic body 38 is fixed in the wearing state of the diaper 10 by inclining (inside down) the both side portions of the liquid absorption structure 35 and fixing them through the front and rear end fixing portions 45 and 46. The second absorbent portion 42 is extended and stands toward the wearer's body. In the present embodiment, the front and rear end fixing portions 45 and 46 are front and rear end portions of the liquid absorption structure 35 and are located on the side of the base edge 50 of the second absorption portion 42 described later. Further, the front and rear end fixing portions 45 and 46 are positioned so as to overlap the elastic waist panel 12 in a plan view of the diaper 10. In the present embodiment, the “folding line 40” is a portion where a part of the liquid absorbing structure 35 is bent, and in addition to the portion where the line shape can be visually recognized in the bent state, It includes the case where the shape is not bent so that it can be visually recognized when unfolded.

  In addition, the liquid absorption structure 35 includes a pair of concave bending guide portions 48 extending in the longitudinal direction Y along the bending line 40. The bending guide portion 48 is a concave groove formed by embossing extending in the vertical direction Y, and has a plurality of concave grooves 48A and 48B spaced apart from each other in the horizontal direction X. The concave grooves 48A and 48B have a plurality of compression concave portions 49 that are intermittently arranged in the longitudinal direction Y. In the bending guide portion 48, the plurality of compression recesses 49 are disposed, so that the bending guide portion 48 is thinner and more rigid than the other portions. Since the bending guide portion 48 having a relatively high rigidity is formed along the bending line 40, when the both side portions 42 are bent toward the central portion 41, the bending guide portion 48 is easily bent from the starting point.

  As a method of forming the bending guide portion 48, for example, a part of the absorber 34 may be removed or only the portion of the absorber 34 having a substantially uniform thickness may be compressed and deformed. The part 48 is formed by the latter method (embossing). Therefore, the bending guide part 48 has a thickness dimension smaller than that of the other parts, and is relatively high rigidity and high density by being compressed. Therefore, the bending guide portion 48 is likely to be a starting point of bending, and can quickly move the body fluid that has entered into the longitudinal direction Y.

  The absorbent core 43 of the absorbent body 34 is formed from a mixture of SAP and fluffed wood pulp, and the content of fluffed wood pulp in the bending guide 48 is higher than that of other parts. Is preferred. Specifically, in the present embodiment, the fluff wood pulp content is about 55 to 65 mass% (the SAP content is about 45 to 35 mass%) in the portion excluding the bending guide portion 48. In the bending guide section 48, it is preferable to set the fluff wood pulp content to be about 75 to 90% by mass (SAP content is about 25 to 10% by mass). Thus, when the content of fluffed wood pulp is relatively high in the bending guide portion 48, i) when the moisture is sprayed to keep the concave shape in the manufacturing process, This situation can be avoided by restraining the SAP content to a certain level or less, where it may not be possible to maintain the predetermined shape retention by absorbing and absorbing ii), and ii) During wearing, when the body fluid enters the bending guide portion 48 and is absorbed by the absorbent body 34, the concave shape is collapsed due to swelling of the SAP, and the depth of the compression recessed portion 49 is reduced. It can be prevented that the standing state of 42 cannot be maintained.

  FIG. 5A is a partially enlarged view of a region surrounded by a one-dot chain line V (a) in FIG. Referring to FIG. 5, the plurality of compression recesses 49 forming the respective concave grooves 48A and 48B are defined by both end edges 49a and 49b facing in the length direction and both side edges 49c facing in the width direction. It has a substantially rectangular shape. The compression concave portion 49 of the concave groove 48A and the compression concave portion 49 of the concave groove 48B adjacent to each other in the horizontal direction X are arranged so as to be displaced from each other in the horizontal direction X and the vertical direction Y, and do not intersect each other in the horizontal direction X Have Each compression recess 49 includes a low compression portion 53 and a plurality of high compression portions 54 surrounded by the low compression portion 53. In the high compression part 54, the absorber 34 is compressed deeper (stronger) than the low compression part 53, and the thickness dimension is smaller than that of the low compression part 53, and the rigidity is higher. Density.

  Referring to FIG. 5B, the thickness dimension (the deepest thickness dimension at which the high compression section 54 is located) D2 of the compression recess 49 of the bending guide section 48 reliably folds the liquid absorbing structure 35. In order to dispose the second absorption part 42 on the first absorption part 41, the thickness is preferably about 45 to 85% of the thickness D1 of the liquid absorption structure 35. When the ratio is less than about 45%, the liquid absorbing structure 35 cannot be reliably bent in the bending line 40, and the second absorption is particularly caused by a change in the posture of the wearer in the wearing state. When the force which tries to fall over with respect to the part 42 acts, there exists a possibility that the standing state of the 2nd absorption part 42 may be cancelled | released. On the other hand, when the ratio exceeds about 85%, the liquid absorbing structure 35 becomes relatively thin in the bending guide portion 48, and the portion breaks during the bending process or during wearing. There is a risk that.

  The bending guide portion 48 is a concave groove that is concave on the skin-facing surface side of the absorber 34, but the absorber 34 is bent via the bending guide portion 48 to make the second absorption portion 42 the first absorption portion 42. As long as it can be located on the absorption part 41, it may be a concave groove that is concave on the surface of the absorbent body 34 facing the cover sheet 36. However, in the former case, it is easier to bend the first absorbent portion 41 and the second absorbent portion 42 along the folding line 40 so that the skin facing surfaces face each other, compared to the latter case, And it can be said that it is easy to induce the bodily fluid excreted to the skin facing surface side. Further, as long as the bending is maintained, the bending guide portion 48 only needs to be positioned so as to overlap with at least a part of the bending line 40. Further, from the viewpoint of preventing side leakage, the liquid absorption structure It suffices if the folding line 40 on at least one side of both sides of the body 35 overlaps.

  Referring to FIG. 6, the second absorption part 42 is connected to the first absorption part 41, the contact surface 59 </ b> A that contacts the wearer's body in the wearing state, the non-contact surface 59 </ b> B located on the opposite side. It has the base side edge part 50 and the free side edge part 51 located inward from the base side edge part 50 (to the vertical centerline P side). Since the second absorbent portion 42 includes the absorbent body 34 and the liquid-permeable body-side liner 33 that covers the body side, the entire outer surface (the contact surface 59A and the non-contact surface 59B) is hydrophilic. Have sex. The side elastic body 38 is located on the contact surface 59A side of the second absorption portion 42 and is disposed between the body side liner 33 and the liquid-permeable fixing sheet 52. The fixing sheet 52 is optional, and a side elastic body 38 can be disposed between the body side liner 33 and the absorbent body 34, but when the diaper 10 is manufactured, it is directly attached to the semi-rigid absorbent body 34. Compared with the case where the side elastic body 38 is attached to the side elastic member 38, the side elastic body 38 can be attached more stably by interposing the fixing sheet 52. Further, for convenience, the second absorbent portion 42 is divided into a first area 61 located on the free side edge 51 side and a second area 62 located on the base edge 50 side, which divides the width dimension into two equal parts. It is divided.

As described above, the mass per unit area of the liquid absorbing structure 35 in the first and second absorption parts 41 and 42 (excluding the bonding material for bonding the constituent members) is about 200 to 600 g / m ² , preferably 350 to 450 g / m ² , and the thickness of the entire liquid absorbing structure 35 is substantially uniform except for the bending guide portion 48. However, the thickness of the first absorption part 41 may be larger than that of the second absorption part 42 in order to absorb and retain a larger amount of body fluid in the first absorption part 41, and conversely, the second absorption. The thickness of the part 42 may be larger than that of the first absorption part 41. In particular, in the latter case, the second absorbing portion 42 has a relatively high rigidity, and even when sandwiched between the wearer's groin portions, the second absorbing portion 42 is not easily laid down, and can maintain an upright state.

  The side elastic body 38 is formed of a string-like or strand-like elastic material having a fineness of about 400 to 1200 dtex and stretched and fixed about 1.8 to 4.0 times from a contracted or relaxed state. can do. The side elastic bodies 38 are evenly arranged over the entire width dimension (dimension in the lateral direction X) from the base side edge 50 to the free side edge 51 of the second absorption part 42, and the second absorption part 42 as a whole. Has elasticity. Here, “the side elastic bodies 38 are evenly arranged” is a dimension in design and includes a slight dimensional error that occurs in an actual manufacturing process. However, as long as the effects of the present invention to be described later are obtained, the side elastic body 38 is disposed not in the entire second absorbent portion 42 but in at least a part of each of the first area 61 and the second area 62. Just do it. Further, the side elastic body 38 is not a string-like or strand-like elastic material, but is formed of an elastic sheet such as a stretchable fiber non-woven fabric disposed in both areas across the first area 61 and the second area 62. May be.

  Speaking of each dimension of the second absorption part 42, the width dimension W1 of the second absorption part 42 is about 20 to 60 mm, and the separation dimension R1 (pitch) between the side elastic bodies 38 is about 5 to 15 mm. . In order for the second absorbent portion 42 to stand up in the wearing state of the diaper 10 and for the outer surface to fit the wearer's body in a planar shape, the entire second absorbent portion 42 needs to have a required elongation stress. When the separation dimension R1 is an appropriate size, and the fineness and the expansion ratio of the side elastic body 38 are within the above-described preferable ranges, the second absorbent portion 42 exhibits the required elongation stress. Yes. In addition, the extension stress of the side elastic body 38 may be substantially equal, or the extension stress can be changed by changing the extension magnification partly as necessary.

  Referring to FIG. 3, both side portions of the covering sheet 36 are bent inward, and front and rear end portions thereof are fixed on the liquid absorbing structure 35 (on the second absorbing portion 42) via the joint portion 65. Has been. On both sides, a plurality of string shapes extending in the longitudinal direction Y and having a fineness of about 300 to 1000 dtex and stretched and fixed about 1.6 to 3.0 times from a contracted or relaxed state or A cuff elastic body 63 formed of a strand-like elastic material is disposed. By disposing the cuff elastic body 63, the barrier cuff 64 is formed so that both side portions stand on the wearer's body side when the diaper 10 is worn by the contraction action.

  Referring to FIGS. 6 and 8, the liquid absorbing structure 35 is applied to the surface of the cover sheet 36 (or the leakage preventing sheet 37 when the leakage preventing sheet 37 is disposed) facing the liquid absorbing structure 35. Further, it is fixed to the cover sheet 36 (or the leak-proof sheet 37 when the leak-proof sheet 37 is disposed) via the joint portions 70 and 71 formed from the hot melt adhesive. The joint portions 70 and 71 are located at the center in the lateral direction X of the liquid absorbing structure 35, and a central joint portion 70 extending in the vertical direction Y from the front end edge to the rear end edge of the liquid absorbent structure 35, and the central joint portion 70. Side joints 71 that are spaced apart by a given dimension on both sides in the lateral direction X. The side joint portion 71 is located on the lower surface of the base side edge portion 50 of the second absorbent portion 42, and both end joint portions 71A, 71B located on the front and rear end edge sides of the liquid absorbing structure 35, and both end joint portions 71A, Intermediate joint 71C located between 17B. The intermediate joint portion 71C and both end joint portions 71A and 71B are located apart from each other in the longitudinal direction Y by a given dimension.

  In such a joining mode, the center of the liquid-absorbing structure 35 (that is, the center of the first absorption part 41) is stably fixed to the covering sheet 36 via the central joint 70, while the liquid-absorbing structure 35 is opposed. Since the entire surface is not fixed to the covering sheet 36 via the hot melt adhesive, the absorbent chassis 11 is entirely compared to the case where the entire surface is fixed to the covering sheet 36 via the hot melt adhesive. Have flexibility. Moreover, since the side junction part 71 is located in the lower surface of the base side edge part 50 of the 2nd absorption part 42, when wearing the diaper 10 as above-mentioned, the 2nd absorption part 42 removes the base side edge part 50. It can stand up toward the wearer's body as a starting point.

  Referring to FIGS. 7, 9, and 10, when the diaper 10 is worn, the second absorbent portion 42 stands up toward the wearer's body 17 side due to the contraction force of the side elastic body 38. Usually, when standing a three-dimensional cuff or the like by the contraction force of an elastic body, only the free side edge 51 on which rubber is arranged contacts the wearer's body 17 so that the entire three-dimensional cuff is in a planar shape. It becomes difficult to fit. In the diaper 10 according to the present embodiment, the side elastic bodies 38 are evenly arranged over the entire width of the second absorbent portion 42, and the side elastic bodies 38 of the first area 61 and the second area 62 are used. Since the shrinkage dimensions are substantially the same, not only the free side edge portion 51 but also the entire contact surface 59A of the second absorbent portion 42 comes into contact with the wearer's thigh in a substantially planar manner. Therefore, compared with the case where only the free side edge portion 51 contacts the wearer's body 17, the contact area with the body 17 is large, the fit is excellent, and the body fluid that has reached the body 17 is reliably absorbed and retained. be able to.

  The second absorbent portion 42 includes a compression-elastic liquid-absorbing core 43 therein and has a required thickness and rigidity. For example, a three-dimensional cuff formed only from a sheet member having elasticity in a conventional diaper, etc. Compared to the above, the body 17 of the wearer is more stably fitted. In particular, in a state where the wearer is lying down, it is possible to suppress the formation of a gap that causes leakage of bodily fluid between the body 17 and the second absorption part 42, and excrement from the leg opening 16. Can be prevented from leaking sideways. Further, in the case of a diaper in which the front and rear waist regions 13 and 14 are formed from separate front and rear waist panels 18 and 19 as in the present embodiment, the absorption chassis 11 that has absorbed body fluid is displaced from its proper position by its own weight. Since the second absorbent portion 42 fits the body 17 in a relatively wide range, it is possible to prevent such sliding down because the second absorbent portion 42 is likely to be sandwiched between the wearer's crotch.

  Referring to FIGS. 9 and 10, the second absorption part 42 fits the wearer's body in a planar shape, so that the absorption efficiency is higher than when only a part of the second absorption part 42 fits and absorbs body fluid. Can be said to be expensive. Moreover, since at least the contact surface 59A of the second absorption part 42 has hydrophilicity, it leaks out beyond the apex (free side edge part 51) of the second absorption part 42 across the body 17. The discharged body fluid can be absorbed and held on the skin-facing surface (contact surface 59A) of the second absorption part 42. Moreover, in this embodiment, since the whole including the non-contact surface 59B of the 2nd absorption part 42 has hydrophilicity, the excreted bodily fluid and the skin opposing surface of the 1st absorption part 41, and 2nd While passing through the non-contact surface 59B of the absorbing portion 42 and being absorbed and held by them, as described above, the body crossed over the top of the second absorbing portion 42 and moved to the skin facing surface side. The body fluid is absorbed and held from the contact surface 59A. However, as long as the required body fluid is absorbed and held in the first absorption part 41, the non-contact surface 59B of the second absorption part 42 may not be hydrophilic but may be hydrophobic or liquid impervious. In such a case, absorption of body fluid from the non-contact surface 59B side is suppressed, while leakage of excrement moving in the lateral direction X in the diaper 10 can be effectively prevented.

  Conventionally, in a technical field to which the present invention belongs, a configuration in which a part of a liquid absorbing structure is bent along a bending line is known, but the bending line 40 according to the present invention includes a second absorbing portion 42. Since it is intended to form a three-dimensional cuff having liquid absorption performance as a state of being bent and disposed on the first absorption part 41, the bent state is not easily released due to a change in posture during wearing. is necessary. As described above, in the present invention, the bending guide portion 48 formed of the plurality of compression recesses 49 extending along the bending line 40 on the skin facing surface side of the liquid absorbing structure 35 is disposed. Therefore, the bent state is easily maintained, and the bent state during wearing is not inadvertently released.

  In addition, as described above, the compression recess 49 preferably has the required thickness dimension D2 and / or the suction thickness having the required thickness dimension so that the bent state can be maintained more stably. In order to bend the liquid structure 35, the bending guide portion 48 is preferably formed by a plurality of concave grooves 48A and 48B instead of a single one. That is, in the worn state, the second absorbent portion 42 can be flexibly swung (standing) up to about 180 degrees from the state in which the second absorbent portion 42 is in contact with the first absorbent portion 41. It is preferable in order to fit the groin part and various body shapes in the heel part in a planar shape, and for this purpose, the liquid absorbing structure 35 having a required thickness dimension D1 is bent not in the pointed shape. It is preferable to bend so that it may become a shape.

  Thus, in order to make the liquid absorption structure 35 having a required thickness dimension bend at the bent portion, the bending guide portion 48 needs to have a required width dimension. When the guide portion 48 is formed by a single groove having a relatively large width, the rigidity of the liquid-absorbing structure 35 is too high in the portion compared to other portions, and the wearing feeling is impaired. There is a fear. In the present embodiment, the bending guide portion 48 is formed from a plurality of concave grooves 48A and 48B extending in the longitudinal direction Y and spaced apart from each other in the lateral direction X, and the bending guide portion 48 as a whole has a required width. On the other hand, since the non-compressed portion is located between the concave grooves 48A and 48B, the rigidity thereof is locally increased as compared with the case where the entire bending guide portion 48 is formed only of the compressed portion. There is nothing. As long as it has such an effect, the concave grooves 48A and 48B may be two or more, and may be curved or different from each other in addition to the straight shape.

  As described above, the concave grooves 48 </ b> A and 48 </ b> B have a discontinuous shape including a plurality of compression concave portions 49 arranged in the longitudinal direction Y. Therefore, compared to the case where the concave grooves 48A and 48B are formed from a series of grooves continuously extending in the longitudinal direction Y, the rigidity can be further reduced, and the second elastic member 38 can be contracted by the contraction force of the side elastic body 38. By contracting together with the absorbing portion 42, the second absorbing portion 42 can be reliably erected.

  In addition, the respective compression recesses 49 constituting the concave grooves 48A and 48B have substantially the same shape, and the compression recess 49 of the recess groove 48A and the compression recess 49 of the recess groove 48B are slightly different from each other in the lateral direction X. Arranged in a misaligned state. Therefore, compared to the case where the compression recesses adjacent to each other in the lateral direction X are arranged to coincide with each other in the lateral direction X, the entire bent portion of the liquid absorbing structure 35 can be given rigidity evenly. . Furthermore, since each compression recessed part 49 contains the low compression part 53 and the high compression part 54, this part does not become high rigidity locally, but can contribute to the balance of the rigidity of the whole bending part.

  Referring to FIG. 10, the barrier cuff 64 of the covering sheet 36 stands up toward the wearer's body 17 by the contraction force of the cuff elastic body 63 outside the second absorbent portion 42. Since the width dimension of the barrier cuff 64 is smaller than the width dimension W <b> 1 of the second absorption part 42, the second absorption part 42 is higher than the barrier cuff 64 in a state where they stand up, and the barrier cuff 64 is in the second absorption part 42. It does not cover the whole. Specifically, in the crotch region 15, the width dimension in the lateral direction X from the side edge of the crotch region 15 to the side edge of the free side edge 51 of the second absorbent portion 42 is from the side edge of the crotch region 15 to the covering sheet 36. It is larger than the dimension in the lateral direction X to the free edge. The barrier cuff 64 is liquid-impervious or water-repellent, moves to the contact surface 59A side of the second absorbent portion 42 through the wearer's body 17 and is not absorbed by the contact surface 59A. It functions as a breakwater to prevent leakage. In addition, the second absorbent portion 42 erected by the contracting action of the side elastic body 38 is easily sandwiched between the groin portions and tends to fall outward, but the barrier cuff 64 is positioned on the outer side, whereby the second absorbent portion 42. Is prevented from falling outside. That is, the barrier cuff 64 plays a role of assisting the standing of the second absorption part while forming a double leak-proof wall together with the second absorption part 42. Further, as described above, in the diaper 10 in which the front and rear waist regions 13 and 14 are formed from the front and rear waist panels 18 and 19, the absorption chassis 11 is likely to slide down from an appropriate position by its own weight after absorbing body fluid. Since not only the two absorbing portions 42 but also the barrier cuff 64 is fitted to the body 17, it is possible to prevent such sliding down.

  The basic configuration of the diaper 10 according to the second to fourth embodiments is the same as that of the first embodiment, and only differences will be described below.

Second Embodiment
Referring to FIG. 11, in the present embodiment, the bending guide portion 75 includes a central concave groove 75 </ b> A that extends straight in the vertical direction Y, and double-sided concave grooves 75 </ b> B and 75 </ b> C located on both sides in the horizontal direction X. . The concave grooves 75B and 75C on both sides have shapes in which both ends thereof are inclined toward the central concave groove 75A. Thus, as long as it is reliably bent along the bending line 40, the bending guide portion 75 may be formed of a plurality of concave grooves of three or more, and the concave grooves are mutually connected. It may have a different shape.

<Third Embodiment>
Referring to FIGS. 12A, 12 </ b> B, and 13, a pair of slits 80 is provided at the center of the liquid absorbing structure 35 in the longitudinal direction Y so as to overlap the folding line 40 and the folding guide portion 48. Is provided. As described above, the slit 80 is partially disposed so as to overlap with the folding line 40 and the folding guide portion 48 in a plan view, so that the folding operation becomes smoother and creases are easily attached. Further, in the bending guide portion 48, the absorber 34 is compressed and has relatively high rigidity. However, by providing the slit 80 so as to overlap with the planar view, rigidity in the region where the bending guide portion 48 exists is provided. Can be adjusted as appropriate.

<Fourth embodiment>
Referring to FIGS. 14 and 15, a separate absorption pad (auxiliary pad) 90 having body fluid absorbability is disposed in the liquid absorption structure 35. The absorbent pad 90 has a substantially rectangular shape defined by front and rear end edges 90a and 90b extending in the lateral direction X and both side edges 90c extending between the front and rear end edges 90a and 90b in the vertical direction Y, and is a liquid-permeable fiber. A core wrap sheet formed from a nonwoven fabric or tissue paper, and a liquid-absorbent core encapsulated in the sheet.

  The absorption pad 90 is disposed in a state where both side edges thereof are interposed between the first absorption part 41 and the second absorption part 42 of the liquid absorption structure 35. Since the liquid absorption structure 35 is a non-fixed region between the front and rear end fixing parts 45 and 46 of the first absorption part 41 and the second absorption part 42 on both sides thereof, the wearer holds the absorption pad 90. In the case of arrangement, for example, the second absorbent portion 42 in the non-fixed region is lifted upward with one hand, and both side edges of the absorbent pad 90 are placed between the first absorbent portion 41 and the second absorbent portion 42. By inserting with the other hand so as to intervene, the absorbent pad 90 having a predetermined width dimension can be properly arranged in the central portion of the absorbent chassis 11. In addition, when inserting both side edges of the absorbent pad 90 into the non-fixed region, while making contact with the inner surface of the base side edge 50 of the second absorbent part 42, it is moved as appropriate in the longitudinal direction Y as a guide. The position can be adjusted. Thus, since the separate absorption pad 90 can be arrange | positioned in the appropriate position comparatively easily with respect to the diaper 10 used as the product, according to the amount of excretion, the bodily fluid absorption amount of the whole diaper 10 Can be adjusted as appropriate. Moreover, since the both side edge parts of the absorption pad 90 are arranged so as to be sandwiched between the first absorption part 41 and the second absorption part 42, the displacement of the absorption pad 90 is suppressed.

  The absorbent pad 90 is fixed to the skin facing surface of the liquid absorbing structure 35 (body side liner 33) via detachable fastening means 91 to 93 arranged on the surface facing the liquid absorbing structure 35. Is done. The fixing means 91 to 93 are a hook group or a pressure-sensitive adhesive that is fixed to a receiving part (not shown) including a loop group of mechanical fasteners arranged on the skin-facing surface of the liquid absorbing structure 35. Etc. are formed. Thus, since the absorption pad 90 is fixed to the liquid absorption structure 35 through the fastening means 91 to 93, both side edges are sandwiched between the first absorption part 41 and the second absorption part 42. Combined with the effect of the arrangement, the liquid absorbing structure 35 is more stably fixed. As long as it has such an effect, the fastening means 91 to 93 may be formed from a single member or a plurality of two or more members extending continuously in the longitudinal direction Y.

  As each constituent material constituting the diaper 10 of the present invention, various known materials that are usually used in this type of field can be used without limitation unless otherwise specified. In addition, the front and rear waist regions 13 and 14 are not configured from separate sheet members, and the front and rear waist regions 13 and 14 and the crotch region 15 may be integrally formed. Specifically, the inner and outer layer sheets 21, 22, 23, and 24 may be formed from a single substantially hourglass-shaped sheet member that forms the outer shape of the diaper 10.

The disclosure related to the present invention described above can be organized into at least the following matters.
A longitudinal direction and a lateral direction perpendicular thereto, a skin facing surface and a clothing facing surface, a front waist region, a rear waist region, a crotch region located between the front and back waist regions, and at least an absorbent disposed in the crotch region; In the disposable wearing article including a liquid structure, the liquid absorbing structure is located on the outer side in the lateral direction of the liquid absorbent core, at least a first absorbent part located in the crotch region, and the first absorbent part. The second absorbent portion has a portion bent toward the skin-facing surface of the first absorbent portion, and both end portions spaced apart in the longitudinal direction are the first absorbent portion. 1 is fixed to the absorbent portion, the second absorbent portion is provided with a side elastic body extending in the longitudinal direction, and the liquid absorbing core is located in the bent portion, At least partially extending in the longitudinal direction, Folding guide portion of the concave formed by Nbosu machining position.

The disposable wearing article according to the present invention disclosed in the above paragraph can include at least the following embodiments.
(1) The bending guide portion is formed of a plurality of concave grooves arranged in a spaced apart manner in the lateral direction.
(2) The bending guide portion is configured by a plurality of compression concave portions that are discontinuous in the vertical direction and are spaced apart from each other in the vertical direction.
(3) The compression recess has a high compression portion and a low compression portion surrounding the high compression portion, and the compression recesses of the concave grooves adjacent to each other in the lateral direction have portions that do not intersect with each other in the lateral direction.
(4) The bending guide portion is recessed from the skin facing surface side of the liquid absorbing structure toward the clothing facing surface side.
(5) The liquid-absorbent core is composed of a mixture of superabsorbent polymer particles and fluff wood pulp, and the fluff wood pulp in the liquid-absorbent core is in a region where the bending guide portion is located. The content is high compared to other parts.
(6) The second absorption portion is located on the skin facing surface side of the liquid absorption structure and has a contact surface that contacts the body in a worn state, and the contact surface has hydrophilicity. .
(7) In the second absorption portion, the side elastic body is located on the contact surface side.
(8) The liquid absorption structure has a slit extending in the longitudinal direction, and the slit overlaps a part of the bending guide portion.
(9) It further has an absorption pad that can be attached to and detached from the liquid absorption structure, and both side edges extending in the longitudinal direction of the absorption pad are not fixed between the both ends of the second absorption part. It is located between the area and the first absorption part.

10 Diapers (disposable wearing articles)
12 elastic waist panel 13 front waist region 14 rear waist region 15 crotch region 35 liquid absorption structure 38 side elastic body 41 first absorption portion (central portion of liquid absorption structure)
42 2nd absorption part (both sides of liquid absorption structure)
43 Liquid-absorbing core 44 Core wrap sheet 45 Front end fixing portion 46 Rear end fixing portion 48 Bending guide portions 48A, 48B Concave groove 49 Compression recess 50 Base edge 51 Free side edge 53 Low compression portion 54 High compression portion 59A Contact surface 80 Slit 90 Absorption pad (auxiliary pad)
X Horizontal direction Y Vertical direction

Claims (10)

A longitudinal direction and a lateral direction perpendicular thereto, a skin facing surface and a clothing facing surface, a front waist region, a rear waist region, a crotch region located between the front and back waist regions, and at least an absorbent disposed in the crotch region; In a disposable wearing article including a liquid structure,
The liquid-absorbing structure has a liquid-absorbing core, at least a first absorbent part located in the crotch region, and a second absorbent part located outside the lateral direction of the first absorbent part,
The second absorption portion has a portion bent toward the skin facing surface side of the first absorption portion, and both end portions separated in the longitudinal direction are fixed to the first absorption portion,
A side elastic body extending in the longitudinal direction is disposed in the second absorption portion,
The liquid-absorbing core is located in the bent portion, and a concave bending guide portion formed by embossing extending in the longitudinal direction is located in at least a part thereof. Goods.   The wearing article according to claim 1, wherein the bending guide part is formed of a plurality of concave grooves that are spaced apart from each other in the lateral direction.   The wearing article according to claim 2, wherein the bending guide part is constituted by a plurality of compression recesses that are discontinuous in the longitudinal direction and are spaced apart from each other in the longitudinal direction.   The said compression recessed part has a high compression part and the low compression part surrounding it, The said compression recessed part of the said concave groove adjacent in the said horizontal direction has a part which does not mutually cross | intersect in the said horizontal direction. Wearing articles.   The wearing article according to any one of claims 1 to 4, wherein the bending guide portion is recessed from the skin facing surface side of the liquid absorbing structure toward the clothing facing surface side.   The liquid absorbent core is composed of a mixture of superabsorbent polymer particles and fluffed wood pulp, and in the region where the bending guide portion is located, the content of the fluffed wood pulp in the liquid absorbent core is The wearing article according to any one of claims 1 to 5, which is higher than other parts.   The said 2nd absorption part is located in the said skin opposing surface side of the said liquid absorption structure, and has a contact surface contact | abutted to a body in a wearing condition, The said contact surface has hydrophilicity. The wearing article in any one of -6.   In the said 2nd absorption part, the said side part elastic body is a wearing article of Claim 7 located in the said contact surface side.   The wearing article according to any one of claims 1 to 8, wherein the liquid absorption structure has a slit extending in the longitudinal direction, and the slit overlaps a part of the bending guide portion.   The absorbent pad further includes an absorbent pad that can be attached to and detached from the liquid absorbent structure, and both side edges that extend in the longitudinal direction of the absorbent pad are non-fixed areas located between the both ends of the second absorbent part and the absorbent pad. The wearing article in any one of Claims 1-9 located between 1st absorption parts.

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