TWI565453B - Disposable disposable diaper - Google Patents

Description

Disposable disposable diaper

The present invention relates to a disposable disposable diaper having a side flap at a side edge portion of a product in a wide direction of an absorbent body, and more particularly to a reduction in the wearer due to the elastic member provided on the side flap. Disposable disposable diapers for the stimulation of the skin around the leg circumference.

Conventionally, in the disposable disposable diaper, various processing is performed in order to achieve a good mounting feeling while preventing leakage of excrement. For example, there is known a disposable disposable diaper in which the distance between the front waist portions between the pair of leg-surrounding members is wider than the interval between the rear waist portions of the elastic members (refer to Patent Document 1). ).

According to such a disposable disposable diaper, a pocket (margin) is formed in the front waistline portion, and an absorbent body that can sufficiently absorb the size of the excrement can be disposed in the front waistline portion. Therefore, it is possible to effectively prevent leakage of the front waistline portion which is excreted from the urine.

[Previous Technical Literature]

[Patent Literature]

[Patent Document 1] Japanese Laid-Open Patent Publication No. Hei 11-47189 (Fig. 1)

However, in the conventional disposable disposable diaper described above, there is a problem as follows. In other words, since the leg-hole elastic member is provided at the side end portion in the wide direction of the product, it is easy to bite into the wearer's skin and has a problem of irritating the wearer's skin. In particular, in disposable diapers for nipples, since the skin of the nipple is thin (the thickness of the stratum corneum is thin), the resistance to such stimuli is low, which is likely to be a problem.

Accordingly, the present invention has been made in view of such circumstances, and an object of the present invention is to provide a disposable type that further reduces the irritation of the skin around the wearer's leg circumference while reliably preventing leakage of excrement. Diapers.

The present invention has a front waist portion (front waist portion 20), a rear waist portion (rear waist portion 30) and a crotch portion (the lower crotch portion 25), and includes: an absorbent body including a liquid retaining body (absorbent body 40) Longitudinal absorbent body (absorbent body 15); and side flaps (flanks 70) provided at side edges of the product in the width direction of the absorbent body, in the width direction of the product of the absorbent body The side edge portion is formed with a leg-shaped recessed portion (leg-surrounded recessed portion 35) that is concave toward the center in the width direction of the product of the absorbent body. A disposable diaper (a disposable disposable diaper 10) having a side end portion provided in a wide direction of the product of the side flap (in the product width direction W), and extending in the longitudinal direction of the product ( The product has a longitudinal direction L), and at least one portion of the product in the longitudinal direction is a stretchable sheet-like leg-surrounding portion (leg-surrounding portion 100), and the end of the product of the leg-surrounding portion in the width direction is long in the product. The direction is serpentine, the end edge of the product in the width direction of the leg-surrounding portion; and the distance from the center of the product in the width direction of the disposable diaper to the straight line (center line CL) in the longitudinal direction of the product (for example, the distance d1) is continuously changed from the front waistline portion toward the rear waistline portion, and the convex portion (the convex portion 130) formed by the distance is provided at least in the crotch portion.

According to the features of the present invention, it is possible to provide a disposable disposable diaper which can further reduce the irritation of the skin around the wearer's leg while ensuring leakage of excrement.

10‧‧‧Disposable disposable diapers

15‧‧‧Absorbable ontology

20‧‧‧ front waist circumference

25‧‧‧ Lower part

30‧‧‧After waist circumference

35‧‧‧ leg circumference recess

40‧‧‧ absorber

40a‧‧‧Absorbent core

40b‧‧‧ core cladding

50‧‧‧ top sheet

55‧‧‧ leakproof film

60‧‧‧back sheet

65‧‧‧Target strips

70‧‧‧Flanking

80‧‧‧ leg side hem

90‧‧‧Buckle belt

100, 100A‧‧‧ leg circumference expansion and contraction

110, 120, 130, 130A, 150, 150A‧‧‧ convex

125, 140, 140A, 160‧‧ ‧ recess

200‧‧‧Flexible sheets

Fig. 1 is a developed plan view of a disposable disposable diaper 10 according to an embodiment of the present invention.

Fig. 2 is an enlarged plan view showing a leg-surrounding and contracting unit 100 according to an embodiment of the present invention.

[Fig. 3] is a mode representation after use along the line F3-F3 shown in Fig. 1. A cross-sectional view of the disposable diaper 10.

Fig. 4 is a view schematically showing a state in which the disposable disposable diaper 10 of the embodiment of the present invention is attached to a wearer.

Fig. 5 is an enlarged plan view showing a leg-surrounding and contracting portion 100A according to a modification of the present invention.

[Formation for carrying out the invention]

Next, an embodiment of the disposable disposable diaper of the present invention will be described with reference to the drawings. In the following description of the drawings, the same or similar elements are denoted by the same or similar reference numerals. However, if the drawing is a pattern, it is necessary to pay attention to the difference between the ratio of each size and the reality.

Therefore, the specific dimensions and the like must be judged by referring to the following description. Further, the drawings may include portions having different dimensional relationships and ratios.

(1) Overall outline of the disposable disposable diaper

Fig. 1 is a developed plan view of the disposable disposable diaper 10 of the embodiment. FIG. 2 is an enlarged plan view of the leg circumference expansion and contraction portion 100. Fig. 3 is a view schematically showing a cross section of the disposable disposable diaper 10 taken along line F3-F3 shown in Fig. 1 .

As shown in FIGS. 1 to 3, the disposable disposable diaper 10 has a front waistline portion 20, a crotch portion 25, and a rear waistline portion 30. Front waist The portion 20 is a portion that comes into contact with the front waist portion of the wearer. Further, the rear waistline portion 30 is a portion that comes into contact with the wearer's rear waistline portion. The lower 25 positions of the crotch are between the front waistline portion 20 and the rear waistline portion 30. The absorbent body 15 is constituted by the front waist portion 20, the crotch portion 25, and the rear waist portion 30. Further, the disposable disposable diaper 10 is formed with a pair of leg-surrounding recesses 35 (see FIG. 4). Specifically, the leg-surrounding recess 35 is formed at the side edge portion of the absorbent body 15 in the product width direction W, and is recessed toward the center of the product width direction W in the product width direction W. The leg-surrounding recess 35 engages the fastening tape 90 provided on the rear waistline portion 30 in the front waistline portion 20 when the disposable disposable diaper 10 is worn for the wearer, in particular, by The target tape piece 65 is engaged with the opening portion formed from the front waistline portion 20 to the rear waistline portion 30.

Further, in the present embodiment, the direction from the front waistline portion 20 toward the rear waistline portion 30 is referred to as the product length direction L, and the direction orthogonal to the product length direction L is referred to as the product width direction W.

The disposable disposable diaper 10 has an absorbent body 40 that extends across the crotch portion 25 to the front waistline portion 20 and the rear waistline portion 30. The absorbent body 15 has an elongated shape including the absorbent body 40 that retains liquidity. The absorber 40 is composed of an absorbent core 40a and a core cladding 40b.

The absorbent body 40 can be suitably configured using a known member such as pulverized pulp or a high-absorbent polymer, and a material similar to the disposable disposable diaper. The absorbent core 40a has a narrower width in the product width direction W than the front waistline portion 20 and the rear waistline portion 30.

The absorbent core 40a is wrapped by a sheet-like core cladding 40b. The core cladding 40b is a sheet covering the absorbent core 40a. At least a part of the core layer 40b on the skin surface side is composed of various liquid non-woven fabrics or thin paper having liquid permeability. For example, a hot air fiber nonwoven fabric having a mass of about 10 to 30 g/m ² , a spunbonded nonwoven fabric, an SMS (spunbond-meltblown-spunbond) nonwoven fabric, or a tissue having a mass of about 10 to 30 g/m ² can be used.

The liquid-permeable top sheet 50 is provided on the surface side (skin contact surface side) of the absorber 40. In addition, a liquid-impermeable leakage preventing film 55 is provided on the back side (non-skin contact surface side) of the absorber 40. A back sheet 60 formed of a non-woven fabric is provided on the back side of the leakage preventing film 55.

In the side edge portion of the absorbent body 15 in the product width direction W, the side waist 70 is provided from the front waistline portion 20 across the rear waistline portion 30. The side flaps 70 are constituted by one or two or more sheets of non-woven fabrics stacked one on another. Further, the pair of side flaps 70 are each provided with a fastening tape 90.

A pair of left and right leg circumference expansion and contraction portions 100 are provided at side end portions of the side flaps 70 in the product width direction W. The leg circumference expansion-contraction portion 100 is extended in the product longitudinal direction L and is stretchable at least along a part of the product length direction L. In the present embodiment, the leg-surrounding and contracting portion 100 is a region including the stretchable sheet 200 (see FIG. 1), and the end edge of the leg-surrounding and contracting portion 100 in the product width direction is serpentine in the product longitudinal direction L. The stretch sheet 200 is formed of a stretchable nonwoven sheet.

Further, a pair of leg side hem 80 extending in the product longitudinal direction L is provided inside the pair of leg-surrounding elastic members 100 (near the center in the product width direction W). Further, the disposable disposable diaper 10 may be provided with the front waistline portion 20 and the rear waistline portion 30 along the width direction W of the product. Configured waist hem.

(2) The shape of the leg circumference expansion and contraction portion 100

Next, the shape and the like of the leg-surrounding elastic portion 100 will be specifically described. As shown in FIG. 2, the leg circumference expansion-contraction part 100 is provided along the edge of the leg-surrounding recessed part 35 of the disposable disposable diaper 10. As described above, the end edge of the leg-surrounding portion 100 in the width direction of the product is serpentine in the longitudinal direction L of the product. Specifically, by forming the bending points P1 to P5 in the leg-surrounding and contracting portion 100, the end edge of the leg-surrounding portion 100 in the product width direction W is serpentine. Therefore, the end edge of the leg-surrounding and contracting portion 100 in the product width direction has the unevenness in the product width direction W with respect to the curve S1 of the leg circumference of the wearer who uses the disposable disposable diaper 10.

More specifically, the end edge of the leg-surrounding portion 100 in the product width direction W and the distance from the center line CL (see FIG. 1) of the straight line passing through the center of the product width direction W in the longitudinal direction of the product (distance d1) And d2) continuously changes from the front waistline portion 20 toward the rear waistline portion 30. The amount of change in the distance is changed from an increase to a decrease in the number of turning points (bending points P2, P4), and the amount of change in the distance is changed from a decrease to an increased turning point (bending point P1, P3, P5). The number is divided into multiples.

Further, the leg-surrounding and contracting portion 100 can be manufactured by, for example, the following method. In other words, the cutting position is set to exceed the front end and the rear end of the leg-surrounding recess 35, and the stretch sheet 200 is bent while being stretched along the shape of the leg hole. At this time, the stretch sheet is sandwiched between the sheet constituting the side flap 70 or the leg side hem 80 and the outer sheet. 200, and fixed to the sheet with an adhesive. Next, the stretch sheet 200 and the sheet are cut along the leg recesses 35 by a cutter set to a predetermined cut shape, whereby the leg stretch unit 100 can be formed.

In the present embodiment, the width W1 of the product width direction W along the natural state of the leg-surrounding portion 100 is 5 mm or more and 45 mm or less, and more preferably 12.5 m or more and 40 mm or less. In addition, the natural state refers to a case where the disposable disposable diaper 10 is taken out from the package for packaging and placed in an environment of 20 ° C ± 2 ° C and a relative humidity of 60% ± 5% RH for 60 minutes. Moreover, the expansion ratio of the leg circumference expansion-contraction part 100 is set to 1.5 times or more and 2.4 times or less.

In addition, the expansion ratio means the degree of expansion and contraction of the product in the width direction W of the leg circumference expansion-contraction part 100, and is defined as follows.

The expansion ratio = (the length of the maximum stretch of the leg circumference stretchable portion 100 of the product) / (the length of the natural state of the leg circumference stretchable portion 100 of the product)

In addition, the length of the maximum stretch is the product (the disposable disposable diaper 10) in which the leg-surrounding and contracting portion 100 of the measuring object is placed, and the stretched portion along the leg circumference is measured when the maximum stretch is not broken. The length of the article 100 in the width direction W. Moreover, the length in the natural state after the contraction state is that the product is placed on a flat surface, and the load in which the product is stretched in the wide direction is not applied as much as possible, and the unevenness of the hem is minimized. The length along the product width direction W of the leg circumference expansion and contraction portion 100 is measured. Further, in the present embodiment, when the leg-surrounding-and-expanding portion 100 is bent, it is preferable to measure the length of each of the above-described states along the line of the end portion inside the product width direction W of the stretchable sheet 200.

The amplitude A of the product width direction W formed in the meandering portion of the leg-surrounding portion 100 is preferably 2.5 mm or more and 20 mm or less. The amplitude A is a bending point and a two bending point orthogonal to the passing point (for example, bending) when the predetermined bending point (for example, the bending point P3) is used as a reference. The line of points P4, P5) and the distance through the position of the bend point. Further, the starting point of the amplitude of the convex portion 110 is the position of the intersection of the center of the longitudinal direction L of the target strip 65 and the edge of the side flap 70 (E1 shown in FIGS. 1 and 2), and the amplitude of the convex portion 120. The starting point is the position of the base end of the side of the crotch portion 25 of the fastening tape 90 (E2 shown in Figs. 1 and 2).

Further, the amplitude A is the distance between the turning point and the position measured when the disposable disposable diaper 10 is unfolded and stretched. When the amplitude A is less than 2.5 mm, the uneven portion of the leg-surrounding portion 100 cannot be sufficiently formed, and it is difficult to alleviate the pressure on the skin when the disposable diaper 10 is worn. Further, when the amplitude A exceeds 20 mm, the leg-surrounding and contracting portion 100 is likely to be caught between the wearer's body and the disposable disposable diaper 10 due to the movement of the wearer, and the unevenness cannot be expressed. The function of the area. Further, the unevenness is too conspicuous, and the visual impression of the leg circumference at the time of attachment of the disposable disposable diaper 10 may be deteriorated.

The unfolded state refers to a state in which the entire disposable disposable diaper 10 is unfolded as shown in Fig. 1 . Specifically, the portion of the hem formed by the expansion and contraction of the elastic element can be extended to a flat stage to the extent that it is visually free from hem, and can be in such a state.

Further, the amplitude A can also be taken out from the body of the disposable disposable diaper 10 by the non-stretching member forming the leg portion (in the present embodiment). Confirmation of the non-woven fabric on the side top or back sheet.

At the front end and the rear end of the leg-surrounding recess 35, convex portions 110 and 120 which are convex toward the outer side in the product width direction W are formed from the other portions of the leg-surrounding recess 35.

Here, FIG. 4 is a view schematically showing a state in which the disposable disposable diaper 10 is attached to the wearer after use. Since the stress is likely to concentrate at the front end and the rear end of the leg-surrounding recess 35, it is preferable that the convex portions 110 and 120 are formed to be more dispersed in the skin. Specifically, since it is located close to the base end of the fastening tape 90 and the target web 65 of the front waistline 20 and is located at the front end and the rear end of the leg recess 35, the stress tends to concentrate and is used. When the disposable disposable diaper 10 is worn, it is also a certain portion that overlaps in the front and rear. Therefore, it is preferable to form a convex shape to disperse the pressure on the skin.

Further, the width W2 of the product in the width direction W of the convex portion 110 at the distal end of the leg-recessed portion 35 (or the convex portion 120 at the rear end of the leg-concave portion 35) and the length L2 of the longitudinal direction L of the product are compared. It is preferable that the width of the product in the width direction W of the convex portion 130 formed in the crotch portion 25 and the length in the longitudinal direction L of the product are larger. The convex portion 130 and the concave portion 140 formed in the crotch portion 25 are also important along the wearer's body in addition to easing the pressure on the skin. On the other hand, the position of the front end and the rear end of the leg-concave recess 35 must be more gentle to the pressure on the skin. Here, in the shape of the cost embodiment, while the load applied to the leg-surrounding portion 100 by the action of the wearer is reduced, the pressure on the skin can be prevented from being concentrated in a specific portion.

A concave portion 125 (front waist side concave portion) that is concave toward the center of the product width direction W of the absorbent body 15 is formed closer to the front waistline portion 20 than the convex portion 130. Since the concave portion 125 is concave toward the center side in the product width direction W so as to follow the curve S1 of the wearer's leg circumference, it is easy to follow the groin portion of the wearer. Therefore, the stretch sheet 200 is more closely attached to the wearer, and the crotch portion 25 can be stabilized from the front waist portion 20 of the disposable disposable diaper 10 along the body regardless of the wearer's motion. For example, even when the width of the absorber 40 is narrowed by the movement of the wearer's leg, the concave portion 125 can be continuously attached to the groin portion, and the width of the absorbent body 40 can be narrowed. The ground maintains a broad state. Therefore, it is preferable to have a recessed portion such as the recessed portion 125, which is closer to the front waistline portion 20 than the center of the product longitudinal direction L of the disposable disposable diaper 10.

The convex portion 130 is formed at a position corresponding to the crotch portion 25 of the wearer. Specifically, the width of the absorbent core 40a in the product width direction W is set to be narrower than the front waistline portion 20 and the rear waistline portion 30.

The convex portion 130 is such that the amount of change in the distance from the center line CL is changed from increasing to decreasing. Specifically, the convex portion 130 is a turning point P2 that changes from the increase to the reduced bending point P2 including the amount of change from the center line CL. The way is formed. The crotch portion 25 is sandwiched between the leg hole and the leg hole of the wearer, and since the distance between the left and right leg holes is also a narrow region, the leg elastic portion 100 is sandwiched between the absorbent body 15 and the wearer. The portion between the bodies that easily enters the inside of the disposable disposable diaper 10. Therefore, it is desirable for the leg-surrounding and contracting portion 100 to cover the body more broadly, and by the convex The portion 130 can more reliably prevent leakage of excrement from the absorbent body 15. Further, as described above, the concave portion 125 is attached to the groin portion, and the entry of the convex portion 130 can be further suppressed. Further, in the present embodiment, the convex portion 130, specifically, at least the bending point of the convex portion 130 is provided closer to the front waistline portion 20 than the center CT of the product longitudinal direction L of the discarded disposable diaper 10 after use.

The concave portion 140 and the concave portion 160 are formed closer to the rear waistline portion 30 than the center CT of the product longitudinal direction L of the disposable disposable diaper 10. A convex portion 150 is formed between the concave portion 140 and the concave portion 160. That is, the concave portion 140 and the concave portion 160 are formed at a predetermined distance in the longitudinal direction L of the product. Such a shape prevents the use of the adhesive tape 90 to attach the disposable disposable diaper 10 to the wearer's body, and the leg elastic portion 100 (or the leg side hem 80) is caught by the wearer. The body, the lower part of the crotch is not accessible to the wearer's crotch, and is installed in a state where the front waist circumference (abdomen) cannot be covered. Further, the narrowest portion of the crotch portion of the wearer is a position closer to the front waistline than the center CT of the product longitudinal direction L of the disposable disposable diaper 10 of the disposable disposable diaper 10. Therefore, since the convex portion 130 is a portion that is easily caught by the wearer's body, it is preferable to form the convex portion 130 at this position to prevent leakage of excrement.

The recessed portion 160 is for preventing the hook-and-loop elastic band 100 on the side of the rear waistline portion 30 from being caught on the wearer's body when the fastening tape 90 existing on the side portion of the rear waistline portion 30 is locked to the target tape piece 65. It is not possible to be stuck in the correct position; and the leg circumference expansion-contraction part 100 on the side of the back waistline 30 side is prevented from being protruded from the fastening tape 90 to be formed. Because of the leg circumference When the stretchable portion 100 is caught by the wearer's body and the protrusion of the wearer is attached, the force of the disposable disposable diaper 10 in the downward direction is applied, so that the adhesive is used. The belt 90 is also prone to shifting when the disposable disposable diaper 10 is held around the waist, which is not preferable.

The convex portion 150 is formed together with the adjacent concave portion 140 and the concave portion 160 mainly for easing the pressure from the position corresponding to the buttocks of the wearer to the skin corresponding to the position behind the back. Further, since the convex portion 150 covers the wearer's buttocks in a wide range, the appearance is improved, and by covering the body broadly, leakage of excrement can be given, and the positional deviation of the disposable disposable diaper 10 is less likely to occur. sense.

Further, in the present embodiment, as shown in FIG. 3, at the position corresponding to the front waistline portion 20 and/or the crotch portion 25, the thickness of the leg circumference stretchable portion 100 on the outer side in the product width direction W is larger than that of the leg circumference stretchable portion 100. It is desirable that the thickness of the inner side of the product in the width direction W is thinner. Specifically, the thickness of the end edge of the leg-surrounding portion 100 in the product width direction W is thinner than the inner side in the width direction W of the product, and the number of laminated sheets decreases at a position close to the end edge. In the present embodiment, as shown in FIG. 3, three sheets (leg-side hem 80, stretch sheet 200, and the side sheet portion (T1 in the drawing) in the product width direction W of the leg-surrounding portion 100 are provided. Back sheet 60). On the other hand, four sheets (additional leak preventing film 55) are provided in the inner portion (T2 in the drawing) of the product in the width direction W of the leg-surrounding portion 100.

3] The portion of the disposable disposable diaper 10 corresponding to the wearer's groin portion is the portion that is most likely to bite by the action of the foot, so that the inner side of the W is wider than the width direction of the product. Leg circumference The end portion of the product 100 in the width direction W is formed thin, and when the disposable disposable diaper 10 is worn, the leg-surrounding portion 100 is easily brought into close contact from the inside in the product width direction W toward the outside. When the side end portion of the product of the leg circumference expansion and contraction portion 100 in the width direction W is as thin, the leg circumference expansion and contraction portion 100 is easily adhered to the skin, in particular, such as the wearer's groin portion, by being placed on the body equivalent The portion of the recess can improve the fit and stability of the leg-surrounding portion 100 of the groin portion. At the same time, the effect of the pressure distribution on the skin by the leg-surrounding and contracting portion 100 can be stably exerted. Therefore, the adhesion and stability of the leg-surrounding and contracting portion 100 around the groin portion can be improved, and the effect of dispersing the pressure on the skin by the leg-surrounding and contracting portion 100 can be stably exhibited.

In addition, the joining of the stretchable sheet and the non-stretchable sheet which are formed by the spiral coating and the omega coating is applied to the pattern in which the adhesive present portion and the non-existing portion are present. Coating is carried out. Further, the stretch sheet is made of a non-woven sheet composed of elastic stretch fibers, and the non-stretch sheet is also formed into a non-woven sheet. That is, at the end of the leg-surrounding recess 35, the film sheet does not exist. With such a configuration, the end portions of the leg-surrounding recesses 35 are not entangled in use of the disposable diaper 10 since the non-woven sheet fibers are intertwined with each other, and because the entire end portion of the leg-surrounding recess 35 is formed. Since no adhesive is present, a softer leg-surrounding portion 100 can be formed.

Moreover, the above-described application can also suppress the stretchability of the stretchable sheet due to the non-stretchable sheet being restrained, and the adhesion of the vicinity of the leg-surrounded portion 35 to the wearer's body can be improved.

(3) role. effect

As described above, the end edge of the leg-surrounding and contracting portion 100 in the product width direction W is serpentine in the product longitudinal direction L, and the end edge of the leg-surrounding and contracting portion 100 in the product width direction W and the distance from the center line CL are The front waist portion 20 continuously changes toward the rear waist portion 30, and the amount of change in the distance is changed from the increase to the reduced number of the bending points P; the amount of change in the distance is changed from the decrease to the increased number of the bending points P, which are respectively Set the plural.

Such a serpentine leg-surrounding and contracting portion 100 can effectively suppress the skin of the wearer's skin from being stretched by the leg-surrounding and contracting portion 100, so that the stimulation of the wearer's skin can be reduced. Further, as described above, since the serpentine leg-surrounding and contracting portion 100 is formed with a plurality of convex portions, such a convex portion protrudes outward in the width direction of the product of the disposable disposable diaper 10, and the excrement can be surely prevented. leakage. In other words, according to the disposable disposable diaper 10, it is possible to further prevent the leakage of the excrement while further reducing the irritation to the skin around the wearer's leg circumference.

Further, in the comparative test of the disposable disposable diaper 10 and the conventional disposable disposable diaper having no serpentine leg-surrounding and contracting portion 100, it was confirmed that the wearer's groin portion and the like were suppressed. The appearance of wearing marks (redness of the skin) occurs.

(4) Other embodiments

The above description of the present invention is not intended to limit the scope of the present invention. From this disclosure, the industry should understand a wide variety of alternatives. The form, embodiment and application technique of the implementation.

For example, the shape of the above-described leg-surrounding and contracting portion 100 may be changed as follows. Fig. 5 is an enlarged plan view showing a leg-surrounding and contracting portion 100A according to a modification of the present invention. As shown in FIG. 5, the convex portions 130A and 150A and the concave portion 140A may be formed in a shape smaller than the convex portions 130 and 150 of the leg-surrounding elastic portion 100 and the concave portion 140. In other words, the amplitude A of the leg-surrounding portion 100A may be set to a smaller value than the leg-surrounding portion 100.

In the above-described embodiment, as shown in FIG. 3, the stretch sheet 200 constituting the leg-surrounding and contracting portion 100 extends to the end portion outside the product width direction W, and the stretch sheet 200 can be even considered in view of ease of manufacture and the like. It does not have to extend to the end of the outer side of the product in the width direction W. In other words, the end portion of the stretch sheet 200 on the outer side in the width direction W of the product may be positioned more inward in the width direction W of the product than the end portion in the width direction W of the product such as the back sheet 60 or the leg side hem 80. . Further, at this time, the distance between the end portion of the stretch sheet 200 in the product width direction W and the end portion of the back sheet 60, the leg side hem 80, and the like in the product width direction W is preferably 7 mm or less.

Further, in the above-described embodiment, the unfolded disposable diaper provided with the fastening tape 90 is exemplified, but the present invention is also applicable to the pants-type disposable diaper.

As described above, the present invention naturally includes various embodiments and the like which are not described herein. Therefore, the scope of the technology of the present invention is only by the specific matters of the invention from the proper scope of the patent application described above. Limited.

10‧‧‧Disposable disposable diapers

15‧‧‧Absorbable ontology

80‧‧‧ leg side hem

70‧‧‧Flanking

90‧‧‧Buckle belt

30‧‧‧After waist circumference

25‧‧‧ Lower part

20‧‧‧ front waist circumference

200‧‧‧Flexible sheets

100‧‧‧ leg circumference expansion and contraction

D1‧‧‧ distance

D2‧‧‧ distance

CT‧‧‧ Center

40‧‧‧ absorber

65‧‧‧Target strips

Claims (8)

A disposable disposable diaper having a front waist portion, a rear waist portion, and a crotch portion, and comprising: an elongated absorbent body including an absorbent body that retains liquidity; and an absorbent body provided on the absorbent body The side flap of the side edge portion in the wide direction of the product is formed with a leg recessed portion that is concave toward the center in the width direction of the absorbent body product at the side edge portion of the absorbent body in the width direction of the product. Paper diaper, wherein the edge of the side flap in the wide direction of the product is serpentine in the longitudinal direction of the product, the edge of the product of the side flap in the width direction, and the width of the product passing through the disposable disposable diaper The distance from the center of the direction parallel to the straight line in the longitudinal direction of the product is continuously changed from the front waistline portion toward the rear waistline portion, and the convex portion formed by the change in the distance is provided at least in the lower portion of the crotch; The side end portion of the side flap in the width direction of the product extends in the longitudinal direction of the product, and at least one portion of the product in the longitudinal direction is a stretchable sheet-like leg-surrounding portion; Position corresponding to at least any one portion and the surrounding portion of the crotch, the leg band portion of the thickness of the inner portion of the article width direction and thinner thickness of the outer telescoping portion of the article width direction stretch ratio of the circumference of the leg portion. The disposable disposable diaper according to claim 1, wherein the bending point of the convex portion is lower than that of the disposable disposable diaper. The center of the product in the longitudinal direction is further disposed near the front waist circumference. The disposable diaper according to claim 2, wherein the leg-surrounding and contracting portion is provided along an end edge of the leg-surrounding portion of the disposable disposable diaper by the leg The surrounding stretchable portion is formed with the bending point, and the end edge of the leg-surrounding portion in the product width direction is serpentine. The disposable diaper according to any one of claims 1 to 3, wherein the meandering width of the product formed in the meandering portion of the leg-surrounding portion is 2.5 mm or more and 20 mm. the following. The disposable diaper according to any one of claims 1 to 3, wherein the width of the product in the natural state of the leg-surrounding portion is 5 mm or more and 45 mm or less. The disposable disposable diaper according to any one of claims 1 to 3, wherein a front side waist portion of the absorbent body is formed in a width direction of the product of the absorbent body. The front waist side recess of the central recess. The disposable diaper according to any one of claims 1 to 3, wherein the absorbent core constituting the absorbent body has a width wider than the front waist portion and the aforementioned In the narrower region of the back waist portion, the convex portion is provided in the aforementioned region in the longitudinal direction of the product. The disposable diaper according to any one of claims 1 to 3, wherein the stretch ratio of the leg-surrounding and contracting portion is 1.5 times or more and 2.4 times or less.