JP6238847B2 - Absorbent articles - Google Patents

Description

  The present invention relates to an absorbent article suitable for use as a sanitary napkin, a urine absorbing pad, a panty liner or the like.

  Pad-shaped absorbent articles that are used by being attached to the inner surface of the crotch region of pants-type clothing (so-called shorts) such as sanitary pants are known. An absorbent article comprising such a body-absorbing body part and a pair of wing parts extending from the both side parts of the body part facing each other in the lateral direction to the outside in the lateral direction is also provided. It is known.

  For example, the wing portion of the absorbent article (napkin) disclosed in Patent Document 1 gradually increases in size in the vertical direction from the distal portion (tip portion) to the proximal portion (base end portion or root portion). It is formed to be large. Moreover, the fastening area with respect to shorts is each provided in the shorts opposing surface of the said main-body part and the said wing part.

  According to such an absorbent article, the shorts facing surface of the main body is provided with a fastening area for shorts, and the shorts facing surface of the wing part is provided with a fastening area for shorts. Therefore, the fastening area between the absorbent article and the shorts can be widened. Thereby, it can suppress that an absorbent article moves with respect to shorts.

JP 2014-8179 A

  The wing portion of the absorbent article disclosed in the above-mentioned patent document is formed in a substantially trapezoidal shape in which the dimension in the longitudinal direction gradually increases from the distal portion toward the proximal portion, and the main body portion and the wing portion, The dimension of the connecting part in the vertical direction is larger than the dimension in the vertical direction of other parts of the wing part. In a napkin having a wing portion of such a form, the wearer's action, for example, walking action, to the shorts and / or the napkin to some external force, for example, stretchy shorts in the front-rear direction (corresponding to the longitudinal direction of the napkin) When the expansion / contraction force acts, the external force acts on the main body portion and / or the wing portion and is directly transmitted from one to the other. As a result, the “wing” or the misalignment or wrinkle of the main body portion may occur in the wing portion or the main body portion in the vicinity thereof. Therefore, there is a problem that not only the wearer's thigh root portion or its vicinity is uncomfortable, but also the cause is that the absorption performance of the napkin is lowered and fluid leakage is caused.

  An object of the present invention is to provide an absorbent article capable of solving the above-described problems and the like by extremely simple means.

  The present invention for achieving the above object has a longitudinal direction and a lateral direction orthogonal to each other, a skin facing surface and a clothing facing surface that is the opposite surface, and a body fluid-absorbing main body portion; A pair of wing portions extending outward in the lateral direction from both side portions opposed to each other in the lateral direction, and a fastening area for the clothing is provided on the clothing-facing surfaces of the main body portion and the wing portion. It exists in the improvement of the pad-shaped absorbent article each provided.

In the present invention, the absorbent article has a pair of constricted portions facing in the longitudinal direction at a connecting portion between the main body portion and the wing portion, and the wing portion has a dimension in the longitudinal direction, When the width of the other portion is larger than the size in the longitudinal direction, and the width in the wing portion is W1, the width of the wider portion is closer to the main body than half of the size W1. Ri arranged to tear such that the body portion and the topsheet layer positioned in the skin-facing side, a backsheet layer which is positioned on the garment facing side, interposed between the table backsheet layer Each of the top sheet layer, the back sheet layer, and the absorber has extensibility in the longitudinal direction, and the back sheet layer extends in the lateral direction. A plurality of pleats are In a state where the non-extensible first sheet in which the pleat group area is formed by being adjacent to each other, and between the first sheet and the absorbent body, crossing the absorbent body and longitudinally cutting the pleat group area A pair of elastic regions spaced apart from each other in the longitudinal direction is formed by the elastically stretchable second sheet joined to the first sheet, and the absorber has a plurality of slits extending in the lateral direction. When the tensile force in the longitudinal direction opposite to each other is applied to the absorbent article, the slit expands to develop the longitudinal extension, and at least one of the slits The elastic region is arranged in an overlapping state, the constricted portion is included in the elastic region, and the pleat exists between the pair of elastic regions in the longitudinal direction. There is arranged a non-pleated region.

  According to the absorbent article which concerns on one or more embodiment of this invention, there exist the following effect | action and effect. (1) Since there is a constricted portion at the connecting portion between the main body portion and the wing portion of the pad-shaped absorbent article, the front and rear direction (longitudinal direction) of the article of the main body portion and the wing portion compared to the case where there is no constricted portion. The relative movement of the wing, in particular the movement of the wing relative to the main body in this direction is free. In other words, the external force acting between the main body portion and the wing portion and transmitted from one to the other is weakened at the constricted portion. Therefore, it is possible to prevent “torking” that can be derived from the wing portion and the main body portion in the vicinity thereof by the external force. Therefore, it is less likely that the “wing” or the misalignment or wrinkle of the main body portion is caused in the wing portion or the main body portion in the vicinity thereof. For this reason, not only does not give discomfort to a wearer's thigh root part or its vicinity, but there is also no possibility of causing the absorption performance of a napkin and a fluid leak. (2) Since the widened portion functions as a knob when the fastening area of the wing part is peeled off from the clothes, it is easy to peel off the fastening area from the clothes. (3) When the article is fastened to the shorts (clothing), the constricted portion also functions as a guide portion when the wing portion is folded along the both side edges of the crotch portion of the shorts with respect to the main body portion, Fastening operation becomes easy. (4) When the horizontal dimension in the wing part is W1, the widened part is arranged so as to be closer to the main body part than half of the dimension W1, so when the absorbent article is fastened to the shorts, A widening part is located in the both sides of the clothes in the non-skin opposing surface side of clothing, and thereby a sense of security that the absorbent article is firmly fixed to the clothing by the widening part can be given to the wearer.

The following drawings not only illustrate specific embodiments of the present invention, but also include essential configurations, selectively implementable configurations, and preferred embodiments of the invention.
The partial fracture | rupture top view which shows the skin opposing surface of the sanitary napkin which is an example of the absorbent article which concerns on 1st Embodiment of this invention. The partially broken bottom view which shows the clothing opposing surface of the napkin of FIG. FIG. 2 is a perspective view showing the napkin of FIG. 1 when fastened to clothes. The elements on larger scale which show the clothing opposing surface of the napkin of FIG. The figure similar to FIG. 4 in the napkin which concerns on 2nd Embodiment. The figure similar to FIG. 4 in the napkin which concerns on 3rd Embodiment. The figure similar to FIG. 1 in the napkin which concerns on 4th Embodiment. The figure similar to FIG. 2 in the napkin of FIG. The top view of the absorber which the napkin of FIG. 7 has. The figure which shows the XX cut surface of FIG. FIG. 11 is a view similar to FIG. 10 when the napkin is in an extended state. The figure similar to FIG. 4 in the napkin which concerns on 5th Embodiment.

  The following embodiment relates to the absorbent article shown in FIGS. 1 to 12 and includes not only an indispensable structure of the invention but also a selective and preferable structure.

<First Embodiment>
Referring to FIG. 1, a sanitary napkin 10 that is an absorbent article according to the present invention extends in the longitudinal direction A with the longitudinal direction A and the lateral direction B orthogonal to each other and the dimension in the lateral direction B divided into two equal parts. The center line P, the skin facing surface facing the wearer's skin, the clothing facing surface for the wearer's clothing, the top sheet 11 positioned on the skin facing surface side, and the back surface positioned on the clothing facing surface side The sheet | seat 12 and the bodily fluid absorptive absorber 13 interposed between these front and back sheet | seats 11 and 12 are included.

  The napkin 10 includes a main body portion 15 where the absorber 13 is located and a wing portion 20. The main body portion 15 includes both side portions 16 that face each other in the lateral direction B, and both end portions 17a and 17b that face each other in the longitudinal direction A. The main body 15 has substantially straight side edges 18 that extend in the vertical direction A and are parallel to each other at the center in the vertical direction A. The wing portion 20 extends outward in the lateral direction B from each of the side portions 16 of the main body portion 15. A connecting portion 19 is located between the main body portion 15 and the wing portion 20.

  The dimensions of the top sheet 11 and the back sheet 12 in the main body 15 in the longitudinal direction A and the lateral direction B are larger than those of the absorber 13, and the top sheet 11 and the back sheet 12 that overlap each other are joined to both ends 17 a and 17 b. The pressing part 21 is located continuously. In addition, a plurality of compressed parts 23 for joining a leak-proof sheet 30 and a back sheet 12 to be described later are intermittently located on both side parts 16 and the peripheral part 22 of the wing part 20. In both side portions 16 and the peripheral edge portion 22 of the wing portion 20, the leak-proof sheet 30 and the back sheet 12 are also joined to each other at a portion 24 between the adjacent compressed portions 23 through, for example, a hot-melt type adhesive 25. doing.

  The main body 15 has dimensions W3 and W4 in the lateral direction B between the connecting part 19 in the vertical direction A and both end parts 17a and 17b with respect to a dimension W2 in the lateral direction B between the connecting part 19 and its vicinity. Has large wide portions 26 and 27. With such a configuration, the wearer can hold an image capable of absorbing a large amount of bodily fluids by the wide portions 26 and 27, and thus feels secure that the bodily fluids do not leak when the napkin 10 is worn. . The dimension W2 in the lateral direction B of the connecting portion 19 refers to the dimension in the lateral direction B between both side edges 18 that are substantially linear, and the dimension W3 in the lateral direction B between the wide portions 26 on the front side of the connecting portion 19 is The maximum dimension between both side portions 16 in the lateral direction B on the front side, and the lateral dimension W4 between the wide portions 27 on the rear side of the connecting portion 19 is between the both side portions 16 in the lateral direction B on the rear side. Refers to the maximum dimension.

  In the surface sheet 11, at least a portion covering the absorber 13 has liquid permeability. The surface sheet 11 is formed of a material containing a thermoplastic synthetic resin, and as the material, for example, a fiber nonwoven fabric such as an air-through fiber nonwoven fabric, a point bond nonwoven fabric, or a spun bond nonwoven fabric can be suitably used.

  Referring to FIG. 2, the back sheet 12 is formed from a liquid-impervious, more preferably moisture-permeable and liquid-impervious material including a thermoplastic synthetic resin, such as a moisture-permeable plastic film, or A laminate of a moisture permeable plastic film and a fiber nonwoven fabric can be suitably used.

  The absorbent body 13 is, for example, a compression-molded body of aggregates of hydrophilic fibers and / or water-absorbing fibers, water-insoluble, highly water-absorbing polymer particles having at least 10 times the own mass water absorption performance and hydrophilic fibers and / or A compression-molded body of a mixture with an absorbent fiber, a coated body of the compression-molded body with tissue paper or a liquid-permeable fiber nonwoven fabric, and the compression-molded body may contain a binder such as a water-soluble binder. Examples of hydrophilic fibers and / or water-absorbing fibers include rayon fibers and acetate fiber staples (wood pulp and synthetic pulp).

  The wing portion 20 is disposed so as to be biased to one of the both end portions 17a and 17b. More specifically, when the napkin 10 is worn, the rear end (the other end) located on the wearer's rear side is directed to the front end (one end) 17a located on the wearer's front side. (End part) It arrange | positions so that it may deviate seeing from 17b.

  The wing portion 20 is formed, for example, by bonding a water-repellent or liquid-impervious leak-proof sheet (sheet located on the skin facing surface side) 30 and the back sheet 12 to each other via a hot melt adhesive, for example. It is. The leak-proof sheet 30 has a portion 30a joined to the skin facing surface side of the back sheet 12 via, for example, a hot melt adhesive (not shown). However, the part 30a is in a non-bonded state with respect to the top sheet 11 and the back sheet 12 except for both ends 17a and 17b of the inner edge 30b extending in the longitudinal direction A, and the inner edge 30b and the surface sheet Since a gap is formed between the body fluid 11 and the body fluid, the body fluid is received in the space, and it is possible to prevent body fluid from leaking or exuding in advance.

  Fastening areas 31 and 32 that can be fastened to the shorts by a pressure-sensitive adhesive, for example, and can be peeled off after fastening, on the clothing facing surfaces (shorts facing surfaces) of the main body 15 and the wing 20. Are provided. The fastening areas 31 and 32 are covered and protected by a separator (not shown) until the napkin 10 is manufactured and worn. The plurality of fastening areas 31 provided in the longitudinal direction A of the main body 15 are separated from each other in the longitudinal direction A.

  As shown in FIG. 3, the fastening region 31 of the main body 15 is fastened to the skin facing surface 33 a of the wearer's clothing (shorts) 33, while the fastening region 32 of the wing portion 20 is It is fixed to the non-skin facing surface 33b. For this reason, when a wearer performs some external force, such as pulling, twisting / twisting, etc., on the shorts 33 and / or the napkin 10 by an operation such as walking, the external force acts on the main body 15 and the wing 20. May be transmitted directly from one to the other.

  According to this napkin 10, as shown in FIG. 1 and FIG. 2, the connecting portion 19 between the main body portion 15 and the wing portion 20 is provided with a pair of constricted portions 34a and 34b facing in the vertical direction A. is there. By the constricted portions 34 a and 34 b, the relative movement of the main body portion 15 and the wing portion 20 in the front-rear direction (vertical direction A), in particular, the movement of the wing portion 20 with respect to the main body portion 15 is free. In other words, the external force acting between the main body portion 15 and the wing portion 20 and transmitted from one to the other is weakened at the constricted portions 34a and 34b. Therefore, it is possible to prevent “torking” that can be derived from the wing portion 20 and the main body portion 15 in the vicinity thereof due to the external force. Therefore, there is little occurrence of “trick” or misalignment or wrinkle of the main body portion 15 in the wing portion 20 or the main body portion 15 in the vicinity thereof. For this reason, not only does not give discomfort to the wearer's thigh root portion or the vicinity thereof, but also there is no possibility of causing the absorption performance of the napkin 10 or leakage of body fluid. In addition, when the napkin 10 is fastened to the shorts 33, the constricted portions 34a and 34b also function as guide portions when the wing portion 20 is bent along the both side edges of the crotch portion of the shorts 33 with respect to the main body portion 15. In addition, the bending and fastening operations are facilitated.

  As shown in FIG. 4, the constricted portions 34a and 34b have an outer opening 45b opposite to the inner edge 45a in the longitudinal direction A, and in the longitudinal direction A toward the inner edge 45a in the lateral direction B of each other. The gap has a shape that gradually decreases, and gradually expands from the inner edge 45a toward the outer opening 45b. However, the constricted portions 34a and 34b may be substantially U-shaped or substantially V-shaped.

  The wing portion 20 is adjacent to the connecting portion 19 and is located in the lateral direction B with respect to the center line P in the lateral direction B (proximal end portion / root portion) 36 and in the lateral direction B with respect to the central line P. A distal portion (tip portion) 37 located outside is provided, and a fastening region 32 is provided in the distal portion 37. Further, as shown in FIG. 1, the wing portion 20 has a widened portion 39 having the largest dimension L1 in the longitudinal direction A of the wing portion 20 (the dimension L1 in the longitudinal direction A of the wing portion 20 is the longitudinal direction of the other portion 40). Since the widened portion 39) larger than the dimension in A is adjacent to the proximal portion 36, the widened portion 39 functions as a knob when the fastening region 32 of the wing portion 20 is peeled off from the clothing 33, and is fastened. The area 32 can be easily removed from the shorts 33.

  Referring to FIG. 4, the dimension W1 in the lateral direction B of the wing portion 20 refers to an imaginary straight line 41a that connects the constricted portions 34a and 34b facing the longitudinal direction A and extends in the longitudinal direction B as a reference. It refers to the dimension up to the farthest part 41b. With respect to the dimension W1 in the lateral direction B of the wing part 20, the fastening region 32 of the wing part 20 is arranged on the distal part 37 side with respect to half (W1 / 2) of the dimension W1. Further, since the widened portion 39 is arranged so as to be closer to the main body portion 15 than half of the dimension W1 (W1 / 2), when the napkin 10 is fixed to the shorts 33, the non-skin facing surface of the shorts 33 The widened portions 39 are positioned on both sides of the shorts 33 on the 33b side (see FIG. 3), thereby giving the wearer a sense of security that the napkin 10 is firmly fixed to the shorts 33 by the widened portions 39. Furthermore, since the widened portion 39 and the fastening region 32 are arranged as described above and the fastening region 32 and the widened portion 39 of the wing portion 20 are separated from each other, the widened portion 39 is suitable for use as a knob.

  Further, both end edges 42 and 43 in the longitudinal direction A of the fastening region 32 of the wing portion 20 are outside in the longitudinal direction A from the inner end edge 45a of one constricted portion 34a and the inner end edge 45a of the other constricted portion 34b. The end edge 42 of the fastening region 32 and the inner edge 45a of the constricted portion 34a are disposed at positions separated by a dimension L2 in the longitudinal direction A. The end edge 43 and the inner end edge 45a of the constricted portion 34b are arranged at positions separated by a dimension L3 in the longitudinal direction A. With this configuration, it is possible to prevent the both end edges 42 and 43 of the fastening region 32 from being peeled off from the shorts 33 while the napkin 10 is fastened to the shorts 33.

  Furthermore, since the wing part 20 has the convex edge part 48 in which the width | variety in the horizontal direction B becomes narrow gradually toward the outer side of the vertical direction A in the both ends 49 of the vertical direction A, If the convex end portion 48 is used as a knob when the fastening area 32 is peeled off from the clothes 33, it is easier to peel off the fastening area 32 from the clothes 33. In addition, the convex end portion 48 is disposed adjacent to the constricted portions 34a and 34b, and the convex end portion 48 is included in the widened portion 39 having a large length L1 in the longitudinal direction A in the wing portion 20, and thus the constricted portions 34a and 34a, The widened portion 39 and the convex end portion 48 adjacent to 34b can be used effectively.

  In addition, in embodiment mentioned above, the sheet | seat located in the skin opposing surface side demonstrated by the example formed with the sheet | seat of the separate body of the surface sheet 11 and the leak-proof sheet 30. FIG. However, the present invention is not limited to this, and the sheet positioned on the skin facing surface side may be an integral sheet. The same applies to other embodiments described later.

  Moreover, in embodiment mentioned above, the sheet | seat located in the shorts opposing surface side of the main-body part 15 and the wing part 20 demonstrated in the example formed with the integrated back surface sheet 12. FIG. However, the present invention is not limited to this, and a sheet positioned on the shorts facing surface side may be formed as a separate sheet. The same applies to other embodiments described later.

Second Embodiment
Referring to FIG. 5, similar to the napkin 10 shown in FIG. 1, when the napkin 10 is worn, the napkin 10 is moved to one end 17a located on the front side of the wearer (on the back side of the wearer). The wing portion 20 is disposed so as to be biased when viewed from the other end portion 17b.

  Of the two end portions 17a and 17b, the size in the longitudinal direction A of the constricted portion 34a on the one end portion 17a side close to the wing portion 20 (the dimension from the convex end portion 48 in the longitudinal direction A to the inner edge 45a of the constricted portion 34a) L4 is a dimension in the longitudinal direction A of the constricted portion 34b on the other end 17b side of the both ends 17a and 17b far from the wing portion 20 (from the convex end 48 in the longitudinal direction A to the inner edge 45a of the constricted portion 34b). The dimension is larger than L5.

  According to the napkin 10, due to the above configuration, the portion 50 on the front side of the wearer of the wing portion 20 can move more freely with respect to the main body portion 15. Therefore, it is possible to suppress the turn-up of the portion 50 on the front side of the wearer of the wing portion 20.

  Unlike the second embodiment described above, when the napkin is worn, the wing portion is biased toward one end located on the wearer's rear side as viewed from the other end located on the wearer's front side. The vertical dimension of the constricted part on one end side near the wing part of both end parts is larger than the longitudinal dimension of the constricted part on one end side far from the wing part of both end parts. May be larger.

<Third Embodiment>
Referring to FIG. 6, the napkin 10, like the napkin 10 shown in FIG. 1, is moved to one end 17 a located on the wearer's front side when the napkin 10 is worn (on the wearer's rear side). The wing portion 20 is disposed so as to be biased when viewed from the other end portion 17b.

  Of the both end portions 17a and 17b, the dimension in the lateral direction B (the dimension from the convex end portion 48 to the side portion 16 in the lateral direction B) W6 of the constricted portion 34a on the one end portion 17a side close to the wing portion 20 is the both end portions. 17a, 17b is larger than the dimension W in the lateral direction B (the dimension from the convex end 48 in the lateral direction B to the side part 16) W7 of the constricted part 34b on the other end 17b side far from the wing part 20.

  According to the napkin 10, due to the above configuration, the portion 50 on the front side of the wearer of the wing portion 20 can move more freely with respect to the main body portion 15. Therefore, it is possible to suppress the turn-up of the portion 50 on the front side of the wearer of the wing portion 20.

  Unlike the above-described third embodiment, when the napkin is worn, the wing portion is biased toward one end located on the wearer's rear side as viewed from the other end located on the wearer's front side. The lateral dimension of the constricted part on one end side near the wing part of both end parts is larger than the lateral dimension of the constricted part on one end side far from the wing part of both end parts. May be larger.

<Fourth embodiment>
Referring to FIG. 7, the top sheet 51 of the napkin 10 according to this embodiment is formed from a liquid permeable nonwoven fabric or porous plastic film having extensibility in the longitudinal direction A, more preferably elastic extensibility. ing. Such a surface sheet 51 when formed of a fiber nonwoven fabric can be formed of, for example, a spunbond nonwoven fabric in which the orientation ratio of the constituent fibers is relatively high in the lateral direction B. Such a surface sheet 51 has a relatively high orientation ratio of the constituent fibers in the machine direction when a nonwoven fabric as a material is manufactured. When the nonwoven fabric is arranged in the lateral direction B when the napkin constituent members are assembled, the orientation ratio of the constituent fibers becomes relatively high in the lateral direction B. As other material examples of the surface sheet 51, a nonwoven fabric containing crimped thermoplastic synthetic fibers and a nonwoven fabric containing elastic fibers such as polyurethane fibers can be used. Even in this case, it is preferable that the napkin is disposed so that the orientation ratio of the constituent fibers is relatively high in the lateral direction B. In addition, the top sheet 51 crosses the absorbent body 53 in the lateral direction B and has a first region 51a for expressing elastic stretchability, and an elastic stretchability in the longitudinal direction A is lower than that of the first region 51a. The first area 51a and the second area 51b are alternately arranged in the vertical direction.

  In the wing portion 20, the first areas 51 a are arranged at both end portions 49 in the vertical direction A, while the second areas 51 b are arranged in the central portion 67 in the vertical direction A.

  In the present invention, when the sheet layer such as the top sheet 51 and the back sheet layer 52 (including the sheet or the sheet layer) is extensible, the dimension in the longitudinal direction A obtained from the sheet layer or the like is 50 mm, For a test piece having a dimension in the horizontal direction B of 25 mm, set the tensile tester to hold both longitudinal ends 17a and 17b by 10 mm each, and pull a length of 30 mm in the vertical direction A at a speed of 100 mm / min. The elongation rate when a stretching force of 30 mN acts in the longitudinal direction A for a dimension of 25 mm in the lateral direction B is at least 1.03 to 1.10 times (in a state where no force is applied to the sheet layer or the like) When the length dimension in the longitudinal direction A is 1.00, the length dimension in the longitudinal direction A when a force is applied to the sheet layer or the like is at least 1.03-1. Which means that) is 10 times. Of course, the extensibility of the sheet or the like may be 1.10 times or more. In the present invention, when the napkin 10 is extensible, both ends 17a and 17b of the sanitary napkin 10 are gripped by a chuck of a tensile tester by a width of 10 to 20 mm, and a tensile force of 700 mN per 25 mm width is obtained. When applied, it means that the sanitary napkin 10 extends at least 1.03 to 1.10 times without damage between the chucks. This is, for example, the above numerical range even when the topsheet does not have elastic extensibility and the backsheet layer 52 has elastic extensibility. When the back sheet layer 52 has elastic extensibility, the napkin 10 may have an elongation rate of 1.10 times or more. The elongation rate is measured by removing the leakproof sheet 30. The sanitary napkin 10 is preferably extended at a speed of 100 mm / min. Further, when a sheet or the like has elastic stretchability, the stretch force is applied and the sheet is stretched in the longitudinal direction A to a length of 2.00 times, and then the stretch force is released immediately. Means that it returns to 1.50 times or less the length before stretching. A sheet whose length does not return to 1.50 times or less has inelastic stretchability. Applying a pulling force in the longitudinal direction A opposite to each other with respect to such a napkin 10 means that one end 17a, 17b of the napkin 10 and the other end 17a, 17b are gripped, In the longitudinal direction A, in addition to pulling them in a direction away from each other, one of the end portions 17a and 17b is fixed, and the other end portions 17a and 17b are pulled apart.

  Referring to FIG. 8, the back sheet layer 52 is liquid-impermeable, more preferably moisture-permeable and liquid-impermeable, and is located on the clothing facing surface side and has a non-extensible first sheet 54 and an absorbent body. 53, a plurality of second sheets 55 having a relatively narrow width that can be elastically extended and contracted in the longitudinal direction A across the transverse direction B. The second sheets 55 are arranged at predetermined intervals in the vertical direction A. In addition, although illustration is abbreviate | omitted, the backsheet layer may use the 1 sheet nonwoven fabric which has elastic extensibility, and may laminate | stack 3 or more sheets.

  The 1st sheet | seat 54 in the case of being liquid-impermeable is formed from moisture-permeable plastic films, such as a polyethylene resin film, for example. The first sheet 54 when it is moisture-permeable and liquid-impermeable is formed of, for example, a plastic film such as a stretched polyethylene resin film containing inorganic fine particles such as calcium carbonate and barium sulfate as a filler. The first sheet 54 is formed with a plurality of pleats 57 that extend across the absorbent body 53 from one side 16 to the other side 16. The plurality of pleats 57 define a pleat group region 58 adjacent to the longitudinal direction A. Between the pleat groups 58 arranged apart in the longitudinal direction A, a non-pleated group area 59 without the pleats 57 is defined. In such a back sheet layer 52, a first sheet 54 that defines the pleat group region 58 and a second sheet 55 that is elastically stretchable and a second sheet 55 that is elastically stretchable exhibit a first elastic stretchability. One region (elastic region) 60 is defined, and in the non-pleated group region 59, a second region 61 that is less elastic than the first region 60 in the longitudinal direction A is defined. The first regions 60 and the second regions 61 are alternately arranged in the vertical direction A. Since the cross-sectional shape in the longitudinal direction A of the pleat 57 has undulations as illustrated in FIG. 10, the pleat 57 is provided on the side portion 16 so that the skin of the wearer is not stimulated. It is preferable that it is in the state where it was crushed not only between the pressing parts 21 and 23 but also between the pressing parts 23.

  The second sheet 55 is formed of, for example, a plastic film having rubber elasticity such as a polyurethane resin film, and is interposed between the first sheet 54 and the absorber 53 so as to overlap the pleat group region 58. More preferably, it is in a state where it overlaps with the pleat group area 58 so as to cover the entire pleat group area 58, and is applied in an elastically relaxed state with a gap in at least one of, for example, the longitudinal direction and the transverse direction B. It is joined to the non-pleated group region 59 of the first sheet 54 via the hot melt adhesive 63 (see FIG. 10).

  Each of the second sheets 55 is also separated in the longitudinal direction A so as not to cover the entire area of the non-pleated group area 59 located between the pleat group areas 58. Therefore, each of the non-pleated group regions 59 faces the absorber 53 without the second sheet 55 interposed therebetween. Fastening areas 31 and 32 that can be peeled off from the clothing are provided on the clothing-facing surface of the non-pleated group 59 by, for example, a pressure-sensitive adhesive. Until the napkin 10 is manufactured and worn, the fastening areas 31 and 32 are covered and protected by a separator 64 (see FIG. 10) indicated by phantom lines. The plurality of fastening regions 31 formed in the main body portion 15 are separated from each other in the longitudinal direction A, so that extensibility in the longitudinal direction A is not inhibited.

  In the wing portion 20, the pleat group region 58 and the first region 60 are disposed at both end portions 49 in the longitudinal direction A, while the non-pleated group region 59 and the second region 61 are disposed in the central portion 67 in the longitudinal direction A. It is. In the longitudinal direction A, the back sheet layer 52 formed in this way has high elastic extensibility in the first region 60 and low elastic extensibility in the second region 61.

  The top sheet 51 and the back sheet layer 52 are in a state in which the first region 51a and the first region 60 overlap and the second region 51b and the second region 61 overlap. Is placed and joined.

  Referring to FIG. 9, the absorber 53 has both side edges 69 extending in the longitudinal direction A on both sides in each lateral direction B, and both end edges 70 extending in the lateral direction B at both ends in the longitudinal direction A. The absorber 53 has a plurality of central slits 72 and side edge slits 73 extending in a wave shape in the lateral direction B. Each central slit 72 is arranged at the center in the horizontal direction B so as to cross the center line P, and partially divides the absorber 53 in the vertical direction A. The absorber 53 is continuous in the longitudinal direction A in both the lateral directions B of the central slit 72, and the central slit 72 does not reach the side edge 69. The side edge slit 73 extends in the lateral direction B from the side edge 69 toward the center line P, and is disposed on both side edges 69. The absorber 53 is continuous in the longitudinal direction A on the side close to the center line P of the side edge slit 73, and the side edge slit 73 does not reach the center line P. The central slit 72 and the side edge slit 73 are preferably formed so as to be symmetric with respect to the central line P, and penetrate the absorber 53 in the thickness direction. The slits 72 and 73 are preferably wavy curves, but are not excluded from being linear. However, when the slits 72 and 73 are formed in a wavy curve, the wearer's uncomfortable feeling when the absorbent body 53 is stretched inelastically in the longitudinal direction A can be reduced when compared with a linear one. . The absorber 53 having such slits 72 and 73 has high inelastic extensibility in the longitudinal direction A at the portion where the slits 72 and 73 are present, and is longitudinal at the portion where the slits 72 and 73 are not present. Inelastic extensibility in direction A is low. In this napkin 10, the absorber 53 and the back sheet layer 52 are arranged and bonded in a state where all the central slits 72 and the first regions 60 are overlapped, but at least one of the slits 72 and 73 and the first slits 72 and 73 are joined. The absorber 53 and the back surface sheet layer 52 may be disposed and bonded in a state where the one region 60 is overlapped. Further, in the napkin 10, the absorber 53 and the top sheet 51 are arranged and joined in a state where all the central slits 72 and the first regions 51a are overlapped, but at least one of the slits 72 and 73 is the first. The absorber 53 and the surface sheet may be arranged and joined in a state where the first region 51a overlaps.

  For example, the absorbent body 53 is bonded to the top sheet 51 and / or the back sheet layer 52 via a hot melt adhesive (not shown), and a tensile force in the longitudinal direction A is not applied. The central slit 72 and the side edge slit 73 are in a closed state. The absorber 53 in the case of joining to the back sheet layer 52 is joined to the non-pleated group region 59 in the first sheet 54 so as not to prevent the second sheet 55 from extending in the longitudinal direction A. However, it can be joined to the pleat group 58 in the first sheet 54 or to a part of the second sheet 55.

  Referring to FIG. 10, the second sheets 55 adjacent to each other in the longitudinal direction A are separated from each other so as not to cover the non-pleated group area 59, so that the non-pleated group area 59 is directly connected to the absorber 53. Facing each other. Therefore, in the non-pleated group region 59, the first sheet 54 exhibits the function of air permeability without being obstructed by the second sheet 55, and water vapor generated from the moisture absorbed by the absorbent body 53 is removed from the napkin 10. It is possible to escape outside the clothing facing surface.

  Referring to FIG. 11, this is a partially enlarged view of the napkin 10 showing a state when the both ends 17 a and 17 b of the napkin 10 shown in FIG. 7 are gripped and the napkin 10 is pulled in the longitudinal direction A. In the napkin 10, each of the pleats 57 expands in the longitudinal direction A by the first sheet 54 being pulled in the longitudinal direction A, and at the same time, each second sheet 55 is elastically extended. The topsheet 51 joined to the backsheet layer 52 at both ends 17a and 17b of the napkin 10 also extends in the longitudinal direction A. In particular, the intermittent formation of the compressed portion 23 in the pleat group area 58 of the back sheet layer 52 facilitates the extension of the pleat group area 58. The absorber 53 is bonded to the top sheet 51 and / or the back sheet layer 52, so that the absorber 53 expands in the longitudinal direction A in at least the center slit 72 of the center slit 72 and the side edge slit 73. As a result, the napkin 10 extends in the longitudinal direction A. The extensibility of the napkin 10 caused by the extension is elastic extensibility due to the presence of the second sheet 55, and the napkin 10 is elastically contracted and extended when released from the extension force. Approach the previous state. Therefore, when the napkin 10 is fastened and worn on the crotch region of the garment 33 such as sanitary pants, the napkin 10 is elastic when the crotch region is twisted or bent as the wearer moves. It is possible to adapt to the movement of the crotch region while stretching or contracting elastically. Since the napkin 10 extends easily as described above, the fastening areas 31 and 32 do not easily peel off from the crotch area. In the crotch region, there is no sagging of the napkin 10 or wrinkles only on the napkin 10, and the wearer has a strong sense of unity between the napkin 10 and the clothes 33.

  In addition, according to this napkin 10, all the central slits 72 of the absorbent body 53 are arranged and bonded in a state where the first region 51a of the topsheet 51 and the first region 60 of the backsheet layer 52 overlap each other. Therefore, the first regions 51a and 60 can be elastically expanded with the expansion of the central slit 72 of the absorber 53. In addition, the back sheet layer 52 extends in the lateral direction B so as to cross the absorber 53 and exhibits elastic stretchability, and the elastic stretchability in the longitudinal direction A is the first region. 2 in the longitudinal direction A, the deformation in the first region 60 can be increased, while the deformation in the second region 61 can be reduced, and the napkin 10 can be It is possible to sufficiently extend in the longitudinal direction A by applying a tensile force in the opposite longitudinal direction A. In addition, in the napkin 10, the top sheet 51 and the back sheet layer are formed in a state where the region where the slit of the absorber 53 does not exist and the second region 51b of the top sheet 51 and the second region 61 of the back sheet layer 52 overlap each other. 52 and the absorber 53 are arranged and joined, the deformation in the second regions 51b and 61 can be further reduced, and the above effect (in the longitudinal direction A opposite to the napkin 10) It is possible to ensure that the tensile force is applied and the longitudinal direction A is sufficiently extended).

  The napkin 10 also has a characteristic that the absorbent body 53 is formed with the central slit 72 so that it can be easily stretched when a portion on the center line P at both ends 17a and 17b is gripped and pulled in the longitudinal direction A. Have. Therefore, the wearer who wants to selectively wear the napkin 10 according to the present invention from among a large number of commercially available napkins can pull the both ends 17a and 17b of the napkin in his / her hand in the longitudinal direction A, thereby Knowing the existence of the characteristics, the napkin 10 can be selected without hesitation.

  Further, in the wing portion 20, a fastening region 32 is formed on the clothing-facing surface of the central portion 67 in the longitudinal direction A, and the central portion 67 has second regions 51 b and 61 and slits 72 and 73 of the absorber 53. The top sheet 51, the back sheet layer 52, and the absorber 53 are arranged and bonded so that the parts not to face are opposed to each other. Therefore, since the fastening region 32 is formed at a portion of the wing portion 20 that has low extensibility in the longitudinal direction A, the fastening region 32 of the wing portion 20 can be prevented from peeling off from the clothing 33.

  In the wing part 20, the top sheet 51 and the back sheet layer 52 are arranged so that the first region 51 a of the top sheet 51 and the first region 60 of the back sheet layer 52 are opposed to both end portions 49 in the longitudinal direction A. Is placed and joined. In addition, since the constricted portions 34a and 34b are included in the first regions 51a and 60, the constricted portions 34a and 34b can extend in the longitudinal direction A at the peripheral edges of the constricted portions 34a and 34b. Thereby, the wing part 20 can move freely with respect to the main body part 15 further. Moreover, since the 1st area | regions 51a and 60 with high elastic extensibility to the vertical direction A are arrange | positioned at the both ends 49 of the wing part 20, it can suppress that wrinkles generate | occur | produce in the both ends 49. .

  Furthermore, since the convex end portion 48 is included in the pleat group area 58, a space is formed between the pleat 57 and the garment 33, whereby the wing portion 20 is peeled off from the garment 33 when the napkin 10 is discarded. Becomes easier.

In addition, the napkin 10 according to the fourth embodiment is formed in the same shape as the napkin 10 according to the first embodiment, and has the same actions and effects as the napkin 10 according to the first embodiment.

  In addition, the leak-proof sheet 30 may be formed by a sheet having elasticity in the longitudinal direction A, or may be formed by an inelastic sheet.

  Moreover, although the example which forms the surface sheet 51 with one fiber nonwoven fabric was shown in Embodiment 4 mentioned above, you may form a surface sheet layer by laminating | stacking several sheets.

<Fifth Embodiment>
The napkin 10 of the fifth embodiment, with respect to the napkin 10 of the fourth embodiment, the first zone 51a, differ only 60 placement, other shapes and configurations, etc., is the same as the napkin 10 of the fourth embodiment .

  Referring to FIG. 12, the inner end edge 45 of the constricted portion 34 a on the one end portion (one end portion located on the wearer's front side) 17 a side of the both end portions 17 a and 17 b close to the wing portion 20 is tied, With respect to the first imaginary straight line 74 extending in the lateral direction B, the wing portion 20 includes first regions 51a and 60 on the side close to at least one end portion 17a. For the second imaginary straight line 75 connecting the inner end edge 45 of the constricted portion 34b on the other end (the other end located on the wearer's rear side) 17b side of the both ends 17a, 17b far from the wing 20 The wing portion 20 includes first regions 51a and 60 at least on the side close to the other end portion 17b. Each of the top sheet 51 and the back sheet layer 52 in the first regions 51 a and 60 can extend in the longitudinal direction A from a state in which no force is applied to the napkin 10. Each of the top sheet 51 and the back sheet layer 52 in the first regions 51a and 60 has an elongation ratio of at least 1.03 when an extension force of 250 mN is applied in the longitudinal direction A with respect to a dimension 20.0 mm in the lateral direction B. It is ˜1.10 times.

  With the above configuration, according to the napkin 10, the wing portion 20 can freely move with respect to the main body portion 15, and wrinkles are reliably generated at both end portions 49 of the wing portion 20. Can be suppressed.

The disclosure relating to the present invention described above can be organized into at least the following matters.
The present invention has a longitudinal direction and a lateral direction orthogonal to each other, a skin facing surface and a clothing facing surface that is the opposite surface, and is opposed to the body fluid-absorbing main body portion and the lateral direction of the main body portion. A pair of wings extending outward in the lateral direction from both sides, and a pad-like shape in which fastening areas for the clothing are respectively provided on the clothing-facing surfaces of the main body and the wing The absorbent article has a pair of constricted portions opposed in the longitudinal direction at a connecting portion between the main body portion and the wing portion, and the wing portion is When the dimension in the direction has a widened part larger than the dimension in the longitudinal direction of the other part, and the lateral dimension in the wing part is W1, the widened part is more than half of the dimension W1. The body Arranged as close to the tare is, the body portion includes a topsheet layer positioned in the skin-facing side, a backsheet layer which is positioned on the garment facing side, between the table backsheet layer Each of the top sheet layer, the back sheet layer, and the absorber has extensibility in the longitudinal direction, and the back sheet layer includes the transverse direction. A plurality of pleats extending in the longitudinal direction are adjacent to each other in the longitudinal direction to form a pleat group region, and the non-extensible first sheet is between the first sheet and the absorbent body and crosses the absorbent body A pair of elastic regions spaced apart from each other in the longitudinal direction is formed by an elastically stretchable second sheet joined to the first sheet in a state where the pleat group region is vertically cut, and the absorber is Sideways A plurality of slits extending in the longitudinal direction, and when the tensile force in the longitudinal direction opposite to the absorbent article is applied to the absorbent article, the slit expands to exhibit the longitudinal stretchability. , At least one of the slits and the elastic region are arranged in an overlapping state, the constricted portion is included in the elastic region, and the pleat is not present between the pair of elastic regions in the longitudinal direction. Pleated area is arranged.

The present invention disclosed in the above paragraph can include at least the following embodiments. The embodiments can be adopted separately or in combination with each other.
(1) The said constriction part has the inner side edge and outer side opening which oppose the said vertical direction, and is expanding gradually toward the said outer side opening from the said inner side edge.
(2) Both end edges in the longitudinal direction of the fastening area of the wing portion extend outward in the longitudinal direction from an inner end edge of one of the constricted portions and an inner end side edge of the other constricted portion. There is nothing to do.
(3) The wing portion includes a sheet positioned on the skin facing surface side and a back sheet positioned on the clothing facing surface side. The sheet positioned on the skin facing surface side and the back sheet are It joins in the pressing part formed intermittently along the peripheral part of a wing part.
(4) The main body portion has both end portions opposed to each other in the vertical direction, and the main body portion is between the connection portion and the both end portions with respect to the lateral dimension of the connection portion. A wide portion having a large lateral dimension is provided.
(5) The said wing part is arrange | positioned so that it may be biased when it sees from the other to either one of the said both ends, The said constriction part by the side of one end close to the said wing part among the said both ends The dimension in the longitudinal direction A is larger than the dimension in the longitudinal direction of the constricted portion on one end side far from the wing portion among the both end portions.
(6) The said wing part is arrange | positioned so that it may be biased when it sees from the other to either one of the said both ends, The said constriction part of the one end part side close | similar to the said wing part among the said both ends The lateral dimension is larger than the lateral dimension of the constricted part on one end side far from the wing part among the both end parts.
(7) The wing portion has convex end portions whose dimensions in the lateral direction gradually narrow toward the outside in the vertical direction at both end portions in the vertical direction adjacent to the constricted portion, and The end portion is included in the widened portion.
( 8 ) The convex end portion is included in the pleated group region.
( 9 ) The wing portion is arranged so as to be biased to either one of the both end portions when viewed from the other side, and the constriction on the one end portion side close to the wing portion among the both end portions. The wing portion includes the elastic region at least on the side close to the one end portion with respect to the first imaginary straight line that connects the inner edge of the portion and extends in the lateral direction, and the wing portion of the both end portions The wing portion connects the inner end side edge of the constricted portion on the other end side near to the second imaginary straight line extending in the lateral direction, and the elastic region is at least on the side near the other end portion. And both of the elastic regions in the longitudinal direction can be extended in the longitudinal direction from a state in which no force is applied to the absorbent article, and the main body portion has a size of about 25.0 mm in the lateral direction. for the stretching force of 700mN Elongation rate when allowed to act on the serial longitudinal direction is at least 1.03 to 1.10 times.

  In the specification and claims of this invention, the terms “first” and “second” are used merely to distinguish between like-named elements, positions, and the like.

10 Absorbent articles (napkins)
DESCRIPTION OF SYMBOLS 11 Top sheet 12 Back sheet 15 Main-body part 16 Both sides 17a End part 17b End part 19 Connection part 20 Wing part 22 Peripheral part 23 Squeeze part 26 Wide part 27 Wide part 31 Fastening area 32 Fastening area 34a Constriction part 34b Constriction part 36 Proximal part 39 Widened part 42 End edge 43 End edge 45a Inner end edge 45b Outer opening 48 Convex end part 49 Both end parts 51 Top sheet layer 52 Back sheet layer 53 Absorber 54 First sheet 55 Second sheet 57 Pleated 58 Pleated Group 59 Non-pleated group 60 First region (elastic region)
61 2nd zone 72 Central slit (slit)
73 Side edge slit (slit)
74 First virtual straight line 75 Second virtual straight line A Longitudinal direction B Horizontal direction L1 Vertical dimension of widened portion L4 Vertical dimension of constricted portion on one end side near wing portion L5 One end far from wing portion W1 Vertical dimension of the constricted part W1 Horizontal dimension of the wing part W6 Horizontal dimension of the constricted part on one end side close to the wing part W7 Distal of the constricted part on one end side far from the wing part Horizontal dimensions

Claims (10)

It has a longitudinal direction and a lateral direction orthogonal to each other, a skin facing surface and a clothing facing surface that is the opposite surface, and a body fluid-absorbing main body portion and both side portions of the main body portion facing each other in the lateral direction. A pad-like absorbent article including a pair of wing portions extending outward in the lateral direction, and a fastening area for the clothing is provided on the clothing-facing surface of the body portion and the wing portion, respectively. Because
The absorbent article has a pair of constricted portions opposed to the longitudinal direction at a connection portion between the main body portion and the wing portion,
The wing portion has a widened portion whose dimension in the longitudinal direction is larger than the dimension in the longitudinal direction of other portions,
When the lateral dimension of the wing portions and W1, the wider section, Ri than half of the dimension W1 placed as close to the body portion Thea,
The main body includes a top sheet layer positioned on the skin facing surface side, a back sheet layer positioned on the clothing facing surface side, and a bodily fluid-absorbing absorber interposed between the front and back sheet layers. ,
Each of the top sheet layer, the back sheet layer and the absorber has extensibility in the longitudinal direction,
A non-extensible first sheet in which a plurality of pleats extending in the transverse direction are adjacent to each other in the longitudinal direction to form a pleat group area, the first sheet, and the absorber A pair of elastic members that are spaced apart from each other in the longitudinal direction by an elastically stretchable second sheet that crosses the absorber and is longitudinally cut through the pleat group and joined to the first sheet Area is formed,
The absorbent body has a plurality of slits extending in the lateral direction, and when the tensile force in the longitudinal direction opposite to the absorbent article is applied to the absorbent article, the slits are opened to expand the longitudinal body. Express extensibility in the direction,
Arranged in a state where at least one of the slits and the elastic region overlap, the constricted portion is included in the elastic region,
A non-pleated region in which the pleat does not exist is disposed between the pair of elastic regions in the longitudinal direction .   2. The absorbent article according to claim 1, wherein the constricted portion has an inner end edge and an outer opening facing each other in the longitudinal direction, and is gradually expanded from the inner end edge toward the outer opening. Both end edges in the longitudinal direction of the fastening area of the wing portion do not extend outward in the longitudinal direction from the inner edge of one of the constricted portions and the inner edge of the other constricted portion. The absorbent article according to claim 2 . The wing portion includes a sheet positioned on the skin facing surface side, and a back sheet positioned on the clothing facing surface side,
The sheet | seat located in the said skin opposing surface side and the said back surface sheet are joined in the pressing part formed intermittently along the peripheral part of the said wing part, The absorption in any one of Claims 1-3. Sex goods. The main body has opposite ends facing each other in the longitudinal direction,
The said main-body part has a wide part with a large dimension of the said horizontal direction with respect to the dimension of the said horizontal direction of the said connection part between the said connection part and the said both ends. Absorbent article according to crab. The wing portion is arranged to be biased when viewed from the other side to either one of the both end portions,
The vertical dimension of the constricted portion on one end side near the wing portion among the both end portions is the vertical direction of the constricted portion on one end side far from the wing portion among the both end portions. The absorbent article according to claim 5, which is larger than the dimension of the absorbent article. The wing portion is arranged to be biased when viewed from the other side to either one of the both end portions,
The lateral dimension of the constricted portion on one end side near the wing portion of the both end portions is the lateral direction of the constricted portion on one end side far from the wing portion of the both end portions. The absorbent article according to claim 5, which is larger than the dimension of the absorbent article. The wing portion has convex end portions in which the dimension in the lateral direction gradually narrows toward the outside in the longitudinal direction at both ends in the longitudinal direction adjacent to the constricted portion,
The absorbent article according to claim 1, wherein the convex end portion is included in the widened portion. The absorbent article according to claim 8 , wherein the convex end portion is included in the pleated group region. The wing portion is arranged to be biased when viewed from the other side to either one of the both end portions,
The wing portion is connected to at least the one end with respect to a first imaginary straight line that connects the inner edge of the constricted portion on the one end portion side near the wing portion of the both end portions and extends in the lateral direction. Including the elastic region on the side closer to the part,
The wing portion is at least the other end portion with respect to a second imaginary straight line that connects the inner end edge of the constricted portion on the other end side far from the wing portion of the both end portions and extends in the lateral direction. Including the elastic region on the side close to
Both of the elastic regions can extend in the longitudinal direction from a state in which no force is applied to the absorbent article,
It said body portion are both elongation rate when the stretching force of 700mN for per size 25.0mm of said lateral allowed to act on the longitudinal direction of the claims 1-9 is at least 1.03 to 1.10 times Absorbent article according to crab .