JP2010051344A - Absorbent article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an absorbent article excellent in fitness and wetting preventing property to a skin. <P>SOLUTION: Leg elastic members 61 are arranged along leg opening fringes near the leg opening fringes B1 (B2) in the back side crotch area Bc and arranged from the vicinity of the leg opening fringes to width directional center portion of an abdominal side crotch area Ba so as to be gradually spaced apart from the leg opening fringes B1 (B2) as going from a longitudinal directional center line CL1 to the back side area A in an abdominal side crotch area Ba. The longitudinal tips 61e of the leg elastic members 61 reach areas D where crotch elastic members 71 are arranged or the vicinities of the same. In the absorbent article 1, elastic members from the borders of the back side area A and the abdominal side crotch areas Ba or the vicinities of the same as the start end and along the leg opening fringes near the leg opening fringes B1 (B2) and reaching the crotch elastic members 71 are not arranged. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an absorbent article such as a pants-type disposable diaper.

  Conventionally, as disposable diapers, unfolded disposable diapers using fastening means such as tape fasteners have been mainstream, but recently, pants-type disposable diapers have been put on the market. This pants-type disposable diaper has a feature that it can be easily attached and detached even in a standing state. For example, in Patent Document 1, a waist opening portion and left and right leg opening portions are formed in a use state, and a waist portion in a length range from the waist opening edge to the opening start end of the leg opening portion, and the waist portion A pants-type disposable diaper is described in which an elastic member is disposed along a circumferential direction in a crotch portion having a length range adjacent to the crotch portion and forming the leg opening. According to the pants-type disposable diaper described in Patent Document 1, the elastic member is arranged at a predetermined position, so that the appearance is good and a good wearing feeling and fitting feeling are obtained.

  However, the pants-type disposable diaper described in Patent Document 1 is not provided with an elastic member along the leg opening edge and does not have a so-called leg gather, and therefore has poor fit with respect to the wearer's leg, There is a gap between the leg opening edge and the thigh of the wearer, and there is a risk that the excretory fluid leaks from the gap.

  By the way, leg gathers in absorbent articles such as disposable diapers are normally positioned in the front body when the absorbent article is divided into a front body and a back body by a longitudinal centerline in the developed state of the absorbent article. A front leg elastic member arranged in an extended state from the vicinity of the start end of the leg opening to the crotch of the back body, and from the vicinity of the start end of the leg opening located in the back body to the crotch of the front body And the rear leg elastic member arranged in an extended state, and exists over substantially the entire circumference of the leg opening edge (see, for example, Patent Document 2). In this way, a front leg elastic member extending from the front body to the back body and a rear leg elastic member extending from the back body to the front body are arranged in the vicinity of the leg opening edge along the leg opening edge to form a leg gather. By doing so, the entire leg opening edge fits around the leg located on the thigh side of the wearer's heel, thereby effectively preventing leakage from the leg opening.

  However, a diaper as described in Patent Document 2, that is, a diaper in which a leg elastic forming leg gathering member is arranged on the entire periphery of the leg opening edge, is particularly between the part facing the urination part of the wearer and the skin. There was a problem in terms of preventing leakage, because gaps were likely to occur in the case. In addition, such a diaper is easily positioned so that the front leg elastic member, which should be positioned on the thigh side of the heel portion when worn, overlaps the heel portion when worn. Since the front leg elastic member tends to be excessively tightened, there is a problem in terms of wearing feeling such as a rubber mark on the brim portion or red swelling of the brim portion.

JP 2002-272783 A JP 2006-61680 A

  Accordingly, an object of the present invention is to provide an absorbent article that has excellent fit to the skin and leakage prevention properties, and is gentle to the skin and has a good wearing feeling.

  The present invention has a ventral region disposed on the wearer's ventral side when worn, a crotch region disposed on the crotch, and a dorsal region disposed on the dorsal side, and both side edges of the crotch region are respectively An absorbent article having a leg opening edge curved in a concave shape along a circumference of a wearer's leg, and in the deployed state of the absorbent article, the crotch region is defined by the longitudinal center line on the ventral side When the ventral crotch region located closer to the region and the back crotch region located closer to the dorsal region are divided into the longitudinal direction from or near the boundary between the dorsal region and the dorsal crotch region Leg elastic members extending across the ventral side crotch region across the center line are arranged in a stretched state on both the left and right sides across the center line in the width direction, and the crotch elastic member is absorbed in the ventral crotch region. It is arranged in an extended state along the width direction of the property article, In the dorsal crotch region, the leg elastic member is disposed along the leg opening edge in the vicinity of the leg opening edge, and in the ventral crotch region, from the longitudinal center line to the ventral region. The leg elasticity located from the vicinity of the leg opening edge to the center in the width direction of the ventral inseam area so as to be gradually separated from the leg opening edge as it goes toward the leg inseam area The longitudinal direction tip of the member reaches the arrangement region of the crotch elastic member or the vicinity thereof, and the leg in the vicinity of the leg opening edge starts from the boundary or the vicinity of the ventral region and the ventral crotch region. The object is achieved by providing an absorbent article that is arranged along an opening edge and is not provided with an elastic member that reaches the crotch elastic member.

  The absorbent article of the present invention has excellent fit to the skin, hardly leaks, provides a sense of security against leaks, and is gentle to the skin and has a good wearing feeling.

  Hereinafter, the absorbent article of the present invention will be described based on preferred embodiments with reference to the drawings. The perspective view when one Embodiment of the underpants type disposable diaper which is 1st Embodiment of this invention is seen from the abdominal side is shown by FIG. FIG. 2 is an exploded perspective view showing a state before the diaper shown in FIG. 1 is assembled. FIG. 3 shows a plan view of the skin contact surface side (surface side facing the wearer's skin when worn) showing the developed state of the outer packaging material in the diaper shown in FIG. In addition, in the expansion | deployment state of a diaper (absorbent article), in the pants-type disposable diaper like 1st Embodiment, the state before the side seal part S mentioned later is joined, and fastening means, such as a tape fastener, are used. In the used deployment type disposable diaper, the abdomen side and the back side are not fastened by the fastening means, but are spread in a plane.

  The disposable diaper 1 of this embodiment has a liquid-permeable top sheet 2, a water-repellent or leak-proof back sheet 3, and a liquid-retaining absorbent core 4 interposed between the sheets 2 and 3. A substantially vertically long absorbent main body 10 and an outer packaging material 11 disposed on the back sheet 3 side of the absorbent main body 10 are provided.

  The outer packaging material 11 has an hourglass shape in which both side edges in the longitudinal direction of the disposable diaper 1 are bound inwardly in the central portion in the longitudinal direction, and forms an outline of the disposable diaper. The disposable diaper 1 has an abdominal region A disposed on the abdomen side of the wearer when worn, an inseam region B disposed on the crotch, and a dorsal region C disposed on the back side. Both side edges B1 and B2 of the crotch region B are curved in a concave shape so as to follow the legs of the wearer to form leg opening edges B1 and B2. In the disposable diaper 1, both side edges A1, A2 of the ventral region A and both side edges C1, C2 of the dorsal region C are joined to each other, and by this joining, a pair of side seal portions S, a waist opening 5 and A pair of leg openings 6 is formed. As this joining method, joining methods such as heat sealing, high frequency sealing, and ultrasonic sealing are used. The leg opening 6 is defined by a leg opening edge B1 (B2).

  The top sheet 2, the back sheet 3 and the absorbent core 4 are each rectangular, and are integrated to form a vertically long absorbent main body 10. As the top sheet 2 and the water-repellent or leak-proof back sheet 3, the same materials as those conventionally used for this type of diaper can be used. Moreover, the absorptive core 4 is comprised from the particle | grains and fiber material of the superabsorbent polymer, and is coat | covered with the tissue paper (not shown). As the absorbent core 4, a fiber assembly made of fibers such as pulp fibers, or a structure in which a superabsorbent polymer is held thereon can be preferably used. The fiber assembly is a concept including a non-woven fabric. As a form for holding the superabsorbent polymer, a form in which it is dispersed and held between fibers of a fiber assembly, a form in which it is sandwiched between two or more fiber layers, and a layer comprising a superabsorbent polymer And a state in which the layer composed of the fiber assembly is wrapped with a tissue paper or the like in the accumulated state can be used.

  The outer packaging material 11 has at least two nonwoven fabrics, that is, an outer layer nonwoven fabric 12 and an inner layer nonwoven fabric 13 disposed on the inner surface side of the outer layer nonwoven fabric 12. The outer layer nonwoven fabric 12 forms the outer surface of the disposable diaper 1, and the inner layer nonwoven fabric 13 is joined to the inner surface of the outer layer nonwoven fabric 12 with an adhesive such as a hot-melt adhesive material. Both the outer layer nonwoven fabric 12 and the inner layer nonwoven fabric 13 are preferably water-repellent in consideration of the liquid oozing property.

  A plurality of waist elastic members 51 are arranged in the longitudinal direction of the outer packaging material 11 along the front-rear edge of the front-rear part in the width direction. Each waist elastic member 51 is sandwiched and fixed in an expanded state by the outer layer nonwoven fabric 12 and the inner layer nonwoven fabric 13. When each elastic waist member 51 joins both side edges A1, A2 of the ventral region A of the disposable diaper 1 and both side edges C1, C2 of the back region C to form the side seal portion S, both elastic members The ends of 51 and 51 are arranged so as to overlap each other.

  The outer layer non-woven fabric 12 has a length that further extends from a portion where the waist elastic members 51, 51 are sandwiched and fixed by the outer layer non-woven fabric 12 and the inner layer non-woven fabric 13, and a portion extending from the inner layer non-woven fabric 13 of the outer layer non-woven fabric 12 Is folded back to the absorbent main body 10 side. The skin contact surfaces of the front and rear end portions in the longitudinal direction of the absorbent main body 10, that is, the skin contact surfaces of the topsheet 2 at the front and rear end portions in the longitudinal direction of the absorbent main body 10 are covered with the folded portion of the outer nonwoven fabric 12. .

  A plurality (three in the first embodiment) of leg elastic members 61 are disposed on the leg opening edges B <b> 1 and B <b> 2 that are curved in a concave shape on both the left and right sides of the outer packaging material 11. That is, in the unfolded state of the disposable diaper 1 as shown in FIG. 3, the crotch region B is located closer to the ventral region A by the longitudinal center line (virtual straight line that bisects the diaper 1 in the longitudinal direction) CL1. And the back side crotch region Bc located near the back side region C, the ventral side crotch straddling the longitudinal center line CL1 from the boundary between the back side region C and the back side crotch region Bc or the vicinity thereof Leg elastic members 61 extending over the region Ba are arranged in an extended state on both the left and right sides with a center line CL2 in the width direction (a virtual straight line that bisects the diaper 1 in the width direction) interposed therebetween. The leg elastic member 61 located on the left side and the leg elastic member 61 located on the right side are arranged symmetrically with respect to the width direction center line CL2.

  As shown in FIG. 3, each leg elastic member 61 is arranged along the leg opening edge B1 (B2) in the vicinity of the leg opening edge B1 (B2) in the back crotch area Bc. In Ba, the width of the ventral crotch region Ba from the vicinity of the leg opening edge B1 (B2) so as to be gradually separated from the leg opening edge B1 (B2) as it goes from the longitudinal center line CL1 to the ventral region A. It is arranged over the central part in the direction. In the ventral crotch region Ba, each leg elastic member 61 has an inclined portion arranged so as to be inclined with respect to the width direction center line CL2 starting from the intersection with the longitudinal direction center line CL1, and the width direction center line CL2. The leg elastic member 61 is gradually separated from the leg opening edge B1 (B2) as described above by the presence of the inclined portion. Each leg elastic member 61 is arranged between the outer layer nonwoven fabric 12 and the inner layer nonwoven fabric 13, and is fixed to the nonwoven fabrics 12 and 13 in a stretched state by a predetermined joining means such as an adhesive or heat seal.

  One of the main features of the disposable diaper 1 of the first embodiment is that, as described above, the leg elastic members 61 are arranged in an extended state from the back crotch region Bc to the ventral crotch region Ba, and the abdomen The crotch elastic member 71 is in an extended state along the width direction of the disposable diaper 1 in the side crotch region Ba. And the disposable diaper 1 of 1st Embodiment is equipped with these two types of elastic members 61 and 71, "Leg opening by using the boundary of the ventral region A and the ventral crotch region Ba or its vicinity as a start end. There is no elastic member (hereinafter referred to as a ventral leg elastic member) arranged along the leg opening edge B1 (B2) and reaching the crotch elastic member 71 in the vicinity of the edge B1 (B2). That is, in the disposable diaper 1 of the first embodiment, the leg elastic member 61 forms a leg gather at the leg opening edge B1 (B2) located closer to the back side region C than the longitudinal center line CL1. Since the ventral leg elastic member is not provided, the longitudinal direction exists from the boundary between the ventral region A and the ventral crotch region Ba or the vicinity thereof to at least the arrangement region D (described later) of the crotch elastic member 71. Leg gathers are not formed at the leg opening edge B1 (B2) located closer to the ventral region A than the center line CL1.

  In this way, the leg elastic member 61 is arranged in the vicinity of the leg opening edge B1 (B2) from the back side crotch region Bc to the ventral side crotch region Ba, and the leg from the ventral side crotch region Ba to the back side crotch region Bc. By not providing a leg elastic member (the abdominal leg elastic member) in the vicinity of the opening edge B1 (B2), the balance of stress by the leg elastic member is intentionally broken before and after the longitudinal direction of the diaper 1, thereby making the diaper The center part in the width direction of the portion from the crotch to the back side is pulled by the leg elastic member 61 to the back side. When the diaper 1 is worn, the pulling force in the dorsal direction by the leg elastic member 61 causes the entire diaper 1 to be pulled up to the dorsal side centering on the central portion in the width direction from the crotch to the dorsal side. As a result, the fit of the diaper 1 to the skin is enhanced, and as a result, it becomes difficult to create a gap between the skin and the part of the diaper 1 that faces the urine drainage part of the wearer. Elimination is achieved. Moreover, since the crotch elastic member 71 is arranged in the ventral crotch region Ba instead of the abdomen leg elastic member, the fit of the region Ba to the skin is good.

  If the ventral leg elastic member is disposed, that is, the elastic member is disposed along the leg opening edge B1 (B2) located closer to the ventral region A than the longitudinal center line CL1. In general, a wearer of a diaper often takes a forward bending posture, and the weight of the absorbent core 4 that has absorbed body fluid such as urine is likely to be applied to the front side of the body. When wearing a diaper, it may overlap with the wearer's neck and tighten it excessively.In that case, there is a risk that the wearer's feeling of wear may decrease, such as rubber marks on the neck or swelling of the neck. However, since the diaper 1 of 1st Embodiment is not equipped with the said ventral leg elastic member, there is no possibility of causing such a problem and it is excellent in a feeling of wear.

  As shown in FIG. 3, each leg elastic member 61 has one end (starting end) 61s in the vicinity of the boundary BL between the dorsal region C and the dorsal crotch region Bc at the side edge C1 (C2) of the dorsal region C. The other end 61e is located inward of the diaper 1 in the ventral crotch region Ba from the extension lines of the left and right edges of the absorbent main body 10 (absorbent core 4) in the width direction. It terminates before reaching the center line CL2, and does not straddle the width direction center line CL2. Therefore, the leg elastic member 61 located on the left side and the leg elastic member 61 located on the right side across the width direction center line CL2 are not connected in the center in the width direction of the ventral side crotch region Ba. Thus, compared with the case where the leg elastic member 61 is connected without being separated in the width direction center portion by being separated in the width direction center portion in the width direction center portion of the ventral side crotch region Ba. Since the deformation of the absorbent main body 10 (absorbent core 4) due to the contraction of the leg elastic member 61 is suppressed when the diaper is worn, the diaper pulling effect by the leg elastic member 61 described above is easily achieved. It is possible to further improve the fit and leakage prevention.

  From the viewpoint of ensuring such an effect, the distance L1 between the leg elastic member 61 located on the left side and the leg elastic member 61 located on the right side across the width direction center line CL2 in the ventral crotch region Ba. (Refer FIG. 3) becomes like this. Preferably it is 10-80 mm, More preferably, it is 20-50 mm.

  Further, the separation distance between the start end 61s of each leg elastic member 61 and the boundary BL is preferably within 40 mm, and more preferably within 20 mm. In the back crotch region Bc, each leg elastic member 61 is preferably disposed in a region within 30 mm, particularly within 20 mm from the leg opening edge B1 (B2).

  Moreover, the longitudinal direction front-end [other end (end | tip) 61e] of the leg elastic member 61 located in the abdominal-side crotch area | region Ba is rather than the urination part opposing part (not shown) which opposes the wearer's urination part in the diaper 1. It is preferable that it exists near the ventral region A. More specifically, the shortest distance L2 (see FIG. 3) between the longitudinal tip [other end (end) 61e] of the leg elastic member 61 located in the ventral crotch region Ba and the longitudinal center line CL1 is: When the length along the width direction center line CL2 of the ventral crotch region Ba (that is, the length of the arrow marked with the symbol Ba in FIG. 3) is defined as 100, it is preferably in a range of 42 or more. More preferably, it is in the range of -72. In particular, when the diaper 1 is an L size diaper for babies, the shortest distance L2 is preferably 60 mm or more, and more preferably in the range of 60 to 100 mm. Here, the “longitudinal tip of the leg elastic member located in the abdominal crotch region” is the portion (hereinafter, the farthest from the longitudinal center line CL1) that is closest to the ventral region A in the leg elastic member 61. When a plurality of leg elastic members 61 are arranged and a plurality of ventral closest parts exist as in the first embodiment, the plurality of ventral closest parts are referred to. Means the one closest to the ventral region A (farthest from the longitudinal center line CL1).

  In this way, the longitudinal tip of the leg elastic member 61 located in the abdominal crotch region Ba exists closer to the abdominal region A than the urination portion facing portion, or the shortest distance L2 is set to the abdominal crotch region Ba. By setting the above range in relation to the length along the center line CL2 in the width direction, or by setting the shortest distance L2 to 60 mm or more in an L size diaper for babies, the leg elastic member 61 has a back crotch region Bc. To the urination portion facing portion located in the ventral crotch region Ba across the longitudinal center line CL1, the pulling effect of the diaper by the leg elastic member 61 described above causes the urination portion facing portion to The fit is further enhanced, and the prevention of leakage and the relief of the wearer's leakage are more effectively achieved.

  The crotch elastic member 71 is sandwiched and fixed in the stretched state along the width direction of the diaper 1 by the outer layer nonwoven fabric 12 and the inner layer nonwoven fabric 13 in the ventral crotch region Ba, and as shown in FIG. It is arranged in a state separated to the left and right in the width direction across the line CL2. In the first embodiment, five crotch elastic members 71 are arranged on each of the left side and the right side across the center line CL2 in the width direction. The crotch elastic member 71 located on the left side and the crotch elastic member 71 located on the right side are arranged symmetrically with respect to the center line CL2 in the width direction.

  Each crotch elastic member 71 is arranged in a stretched state on both sides in the longitudinal direction of the ventral crotch region Ba, but is not substantially arranged in the center in the width direction of the ventral crotch region Ba. Specifically, as shown in FIG. 3, each crotch elastic member 71 has a longitudinal length of the absorbent main body 10 (absorbent core 4) from the left and right side edges (leg opening edges) B <b> 1 and B <b> 2 of the abdominal side crotch region Ba. Although it exists in the range up to the position of the extension line of the right and left both side edges, it is between the extension line of one side edge of the absorbent main body 10 and the extension line of the other side edge. There are only a few parts close to the extension line.

  The separation distance L3 (see FIG. 3) between the crotch elastic member 71 located on the left side and the crotch elastic member 71 located on the right side across the width direction center line CL2 is preferably 20 to 100 mm, more preferably 40 to 90 mm. is there. The distance L1 and the distance L3 may be the same or different. When both are different, the distance L3 may be larger, or the distance L1 may be larger.

  In the disposable diaper 1 of 1st Embodiment, the longitudinal direction front-end | tip [the said other end (terminal) 61e] of the leg elastic member 61 located in the ventral side crotch area Ba is in the arrangement | positioning area | region D of the crotch elastic member 71, or its vicinity. Has reached. Here, the “longitudinal tip of the leg elastic member positioned in the ventral crotch region” is as described above, and the “arrangement region of the crotch elastic member” is closest to the ventral region A (longitudinal). A virtual straight line P (see FIG. 3) that coincides with the crotch elastic member 71 and is farthest from the ventral region A (most distant from the center line CL1 in the longitudinal direction). Mean) a region that coincides with the crotch elastic member 71 and is sandwiched by a virtual straight line Q (see FIG. 3) that crosses the diaper 1 in the width direction. It means one imaginary straight line R (not shown) itself that coincides with one crotch elastic member 71 and crosses the diaper 1 in the width direction.

  As described above, since the longitudinal end (the other end 61e) of the leg elastic member 61 reaches the arrangement region D of the crotch elastic member 71 or in the vicinity thereof, the fit property to the skin of the crotch region B is particularly increased, and leakage occurs. Prevention of anxiety and anxiety about wearer's leakage. The front end (the other end 61e) of the leg elastic member 61 may overlap the crotch elastic member 71 in the arrangement region D. Further, “the longitudinal tip (the other end 61e) of the leg elastic member 61 has reached the vicinity of the placement region D” means that the leg elastic member 61 has not reached the placement region D and is closer to the longitudinal center line CL1 than the placement region D. Means that the shortest distance between the front end of the leg elastic member 61 in the longitudinal direction and the virtual straight line Q is approximately 20 mm or less.

  The length (that is, the distance between the virtual straight line P and the virtual straight line Q in FIG. 3) of the arrangement region D of the crotch elastic member 71 along the width direction center line CL2 is the center in the width direction of the ventral crotch region Ba. When the length along the line CL <b> 2 (that is, the length of the arrow marked with the sign Ba in FIG. 3) is 100, it is in the range of 10 to 50, particularly in the range of 10 to 30. It is preferable in that it has the effect of suppressing the gap between the goodness and the urination part.

  As various elastic members including the elastic members 51, 61, 71 used in the disposable diaper 1 of the first embodiment, the same materials as those conventionally used for this type of diaper can be used. Rubber, flat rubber, film type rubber and the like can be used.

  The disposable diaper 1 of 1st Embodiment which has the above structure can be used similarly to a normal underpants type disposable diaper, is excellent in the fitting property with respect to skin, is hard to raise | generate a leak, and has a sense of security with respect to a leak. It is gentle to the skin and has a good wearing feeling. In addition, the disposable diaper 1 of the first embodiment has high performance because the arrangement form of the leg elastic members is simplified as compared with the conventional absorbent article in which leg gathers are formed on the entire circumference of the leg opening edge. However, the manufacturing cost can be kept low. The disposable diaper 1 according to the first embodiment is particularly suitable as a disposable diaper for 2 to 3 years old high-age children.

  FIG. 4 shows a second embodiment of the absorbent article of the present invention. About 2nd Embodiment, a different component from the disposable diaper 1 of 1st Embodiment mentioned above is mainly demonstrated, the same component attaches | subjects the same code | symbol and abbreviate | omits description. The description about the diaper 1 of 1st Embodiment is applied suitably to the component which is not demonstrated in particular.

  In the disposable diaper of the second embodiment, a waistline elastic member 81 extending in the width direction of the disposable diaper is disposed between the waist elastic member 51 arrangement region and the crotch region B in the ventral region A and the back region C, respectively. It differs from the first embodiment in that a plurality of lines are provided. The waist elastic member 81 is arranged in a state separated in the left and right in the width direction across the width direction center line CL2 in each of the ventral region A and the back region C. The waist elastic member 81 located on the left side and the waist elastic member 81 located on the right side are arranged symmetrically with respect to the width direction center line CL2. Each waistline elastic member 81 is sandwiched and fixed in an expanded state along the width direction of the diaper 1 by the outer layer nonwoven fabric 12 and the inner layer nonwoven fabric 13.

  The waist elastic member 81 is arranged in a stretched state on both sides in the longitudinal direction in each of the ventral region A and the dorsal region C, and substantially in the center in the width direction in each of the ventral region A and the dorsal region C. Is not arranged. Specifically, each waist elastic member 81 has left and right side edges of the diaper (that is, left and right side edges of the outer packaging material 11) A1, A2 (C1, C2) and left and right sides of the absorbent main body 10 (absorbent core 4). Although it exists in the range up to slightly exceeding the position of the extension line on both side edges, each extension line is between the extension line on one side edge of the absorbent core 4 and the extension line on the other side edge. There are only a few parts close to. The separation distance between the waistline elastic member 81 located on the left side and the waistline elastic member 81 located on the right side across the width direction center line CL2 is set in the same range as the separation distance L3 for the crotch elastic member 71. Can do.

  The second embodiment also has the same effect as the first embodiment. The disposable diaper of the second embodiment is particularly suitable as a disposable diaper for infants of about 1 to 2 and a half years old.

  The absorbent article of the present invention is not limited to the above embodiment. For example, in the disposable diaper 1 of the above embodiment, the outer packaging material 11 is composed of the outer layer and the inner layer nonwoven fabrics 12 and 13, but the material of the outer packaging material is not limited to this, and may be a laminate of a nonwoven fabric and a water-repellent sheet, for example. . Furthermore, in the disposable diaper 1 of the said embodiment, although the diaper 1 was comprised from the outer packaging material 11 which defines the outline of a diaper, and the absorptive main body 10 mounted on it, it replaced with this The outline of the diaper may be defined by the top sheet and the back sheet, and an absorbent core may be interposed between the two sheets.

  Moreover, although the underpants type disposable diaper was mentioned as one of the application examples of the absorbent article of this invention, the deployment type disposable diaper using a fastening means, such as a tape fastener, a sanitary napkin, a panty liner (orimono sheet) It can also be applied to incontinence pads and light incontinence liners.

FIG. 1 is a ventral perspective view showing a pants-type disposable diaper that is a first embodiment of the absorbent article of the present invention. FIG. 2 is an exploded perspective view showing a state before the diaper shown in FIG. 1 is assembled. FIG. 3 is a plan view of the skin contact surface side showing a developed state of the outer packaging material shown in FIG. 1. FIG. 4 is a view corresponding to FIG. 3 of the second embodiment of the absorbent article of the present invention.

Explanation of symbols

1 Absorbent articles (pants-type disposable diapers)
2 Top sheet 3 Back sheet 4 Absorbent core 5 Waist opening 6 Leg opening 10 Absorbent body 51 Waist elastic member 61 Leg elastic member 71 Crotch elastic member 81 Girth elastic member A Ventral region B Crotch region Ba Ventral inseam Area Bc Back side crotch area B1, B2 Leg opening edge C Back side area D Crotch elastic member arrangement area CL1 Longitudinal center line CL2 Width direction center line

Claims (4)

It has an abdominal region disposed on the abdomen of the wearer when worn, a crotch region disposed on the crotch, and a dorsal region disposed on the dorsal side, and both side edges of the crotch region are the legs of the wearer. An absorbent article that is curved concavely along the periphery to form a leg opening edge,
In the deployed state of the absorbent article, when the crotch region is divided into a ventral crotch region located closer to the ventral region and a dorsal crotch region located closer to the dorsal region by a longitudinal centerline The leg elastic member extending from the boundary between the dorsal region and the dorsal crotch region or the vicinity thereof to the ventral crotch region across the longitudinal center line extends to both the left and right sides across the width direction center line. And the crotch elastic member is arranged in the stretched state along the width direction of the absorbent article.
The leg elastic member is arranged along the leg opening edge in the vicinity of the leg opening edge in the dorsal crotch region, and from the longitudinal center line to the ventral region in the ventral crotch region. It is arranged from the vicinity of the leg opening edge to the center in the width direction of the ventral crotch region so as to gradually move away from the leg opening edge as it goes toward
The longitudinal tip of the leg elastic member located in the ventral crotch region reaches the arrangement region of the crotch elastic member or the vicinity thereof,
Absorption in which an elastic member that extends along the leg opening edge and reaches the crotch elastic member is arranged in the vicinity of the leg opening edge starting from the boundary between the ventral region and the ventral crotch region or the vicinity thereof Sex goods.   2. The absorbent article according to claim 1, wherein the leg elastic member located on the left side and the leg elastic member located on the right side across the width direction center line are not connected to each other in the width direction center of the ventral crotch region. .   The absorption according to claim 1 or 2, wherein a longitudinal tip of the leg elastic member located in the abdomen crotch region is closer to the abdomen region than a urination portion facing portion facing the urination portion of the wearer. Sex goods.   The length along the width direction center line of the arrangement area of the crotch elastic member is in the range of 10 to 50 when the length along the width direction center line of the ventral crotch area is 100. Item 4. The absorbent article according to any one of Items 1 to 3.

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