TW201410219A - Disposable diaper - Google Patents

Abstract

A disposable diaper (10) comprises: a first inflection portion (116) which is formed on an absorber (40), stretches along the product width direction (W) and is a bending base point for the disposable diaper (10); and a second inflection portion (125) which is formed on the absorber (40), stretches along the product width direction (W), is the bending base point for the disposable diaper (10), and is positioned further to a rear torso area side than the first inflection portion (116). A crotch elastic portion (200a) is provided independent of a torso holding portion (115) without intersecting the torso holding portion (115), and a non-elastic area (211) is formed between a pair of waist elastic portions (210).

Description

Disposable disposable diaper

This invention relates to disposable diapers.

Conventionally, there is a front waist region, a rear waist region, and a crotch region between the front waist region and the rear waist region, and a pair of foot opening portions are formed, and the front waist region and the rear waist region are provided across the armpit region. Disposable disposable diapers for the extended absorbent body are well known.

Here, in order to fit the wearer's body after use, it is proposed to provide an elastic body member in the waist region of the disposable disposable diaper (see Patent Document 1).

[Advanced technical literature] [Patent Literature]

[Patent Document 1] Japanese Patent No. 4824013

However, in order to obtain the waist circumference of the disposable disposable diaper The structure of the area (elastic element) is used in a disposable diaper to fit the wearer's body. As a whole structure of the waist area, it is necessary to improve the fit of the wearer's body. As a result, there will be a wearer. The problem of the load on the skin becomes larger.

Moreover, in the conventional disposable diaper for belt type, when the wearer's foot moves, or when the wearer is in a hug posture, the disposable diaper may be worn by the wearer. The back is offset, and once the offset is generated, there is a disposable disposable diaper which is a problem of separation from the wearer's body in the region from the wearer's back to the lower jaw.

Accordingly, the present invention has been made in view of such circumstances, and an object of the invention is to provide a body that does not impose an excessive load on the wearer's skin and that fits the wearer's body and is not easily worn by the wearer. Disposable disposable diapers that deviate from the configuration.

According to a first aspect of the present invention, a disposable disposable diaper has a front waistline region, a rear waistline region, and a crotch region between the front waistline region and the rear waistline region, and a pair of foot opening portions are formed. And an absorbent body extending across the crotch region and extending toward the front waistline region and the rear waistline region, and further having a product longitudinal direction from the front waistline region toward the rear waistline region; and orthogonal to the product length direction Disposable disposable diapers in the width direction of the product, characterized by having: The front waistline region and the rear waistline region are formed to extend along the width direction of the product, and the disposable disposable diaper is held by the waistline holding portion of the wearer's body; and is formed in the underarm region. a crotch expansion-contraction portion; one of the pair of waist-contracting portions that is formed in the rear waistline region and that is stretchable in the product width direction; and is formed in the absorbent body and extends along the product width direction to be the disposable disposable diaper a first recurve portion of the bending base point; and the absorbent body formed in the width direction of the product to form a bending base point of the disposable disposable diaper, and located closer to the front than the first recurve portion In the second inversion portion on the waist region side, the crotch expansion-contraction portion is provided independently from the waistline holding portion so as not to intersect with the waistline holding portion, and a non-stretchable region is formed between the pair of waist elastic-contracting portions.

According to the features of the present invention, it is possible to provide a disposable paper having a structure that does not impose an excessive load on the wearer's skin and can fit in the wearer's body and is not easily displaced from the wearer's body. diaper.

10‧‧‧Disposable disposable diapers

20‧‧‧ Front waist area

25‧‧‧胯下区域区

30‧‧‧ Front Waist Area

35‧‧‧foot opening

40‧‧‧absorbing layer

40a‧‧‧Absorber core material

40b‧‧‧ core material cladding

50‧‧‧ top sheet

60‧‧‧back sheet

61‧‧‧ leakproof sheets

70‧‧‧Fringe

75‧‧‧foot expansion

80‧‧‧foot folds

81‧‧‧ joint part

82‧‧‧Free end section

90‧‧‧ buckle

91‧‧‧Target belt

115‧‧‧ Waist retention department

116‧‧‧1st recurve

125‧‧‧2nd Recurve

200a‧‧‧Under the expansion and contraction department

210‧‧‧Waist expansion joint

211‧‧‧ Non-stretchable area

Fig. 1 is a disposable disposable diaper used in the embodiment of the present invention, and the elastic member constituting the leg stretch portion and the foot side gather is stretched in an extended state. An example of a surface map.

Fig. 2 is an example of a developed plan view showing a state in which the elastic member constituting the leg stretchable portion and the leg gathers is stretched in the disposable disposable diaper after the embodiment of the present invention.

Fig. 3 is a cross-sectional view of the disposable disposable diaper according to the embodiment of the F-F line shown in Fig. 1.

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

The disposable disposable diaper 10 according to the first embodiment of the present invention will be described with reference to Figs. 1 to 4 .

In the following description, the same or similar reference numerals are given to the same or similar parts. However, the figure is a schematic display, please note that the ratio of each size will be different from the real thing.

Therefore, the specific dimensions and the like should be judged by referring to the following description. Further, each of the drawings may include a difference in the relationship between the dimensions and the ratio of the dimensions.

Further, in the present embodiment, the disposable disposable diaper 10 for belt type will be described as an example, but the present invention is also applicable to the disposable disposable diaper 10 for shorts.

1 and 2 are plan views showing the disposable disposable diaper 10 of the present embodiment, and Fig. 3 is a cross-sectional view of the disposable disposable diaper 10 of the embodiment taken along line FF of Fig. 1. Figure 4 is schematically The disposable disposable diaper 10 of the present embodiment is shown in a state in which it is worn by the wearer.

As shown in FIGS. 1 and 2, the disposable diaper 10 of the present embodiment has a front waistline region 20, a crotch region 25, and a rear waistline region 30. Further, the disposable disposable diaper 10 is formed with a pair of foot opening portions 35.

Here, the front waistline region 20 is a portion that is in contact with the wearer's front waistline portion, the rear waistline region 30 is a portion that is in contact with the wearer's rear waistline portion, and the underarm region 25 is located in the front waistline region 20 and The portion between the back waist region 30.

In the present embodiment, the direction from the front waistline region 20 toward the rear waistline region 30 is referred to as the product longitudinal direction L, and the direction orthogonal to the product longitudinal direction L is referred to as the product width direction W.

The disposable disposable diaper 10 of the present embodiment includes an absorber 40 that extends across the crotch region 25 and extends in the front waistline region 20 and the back waistline region 30. As shown in FIG. 3, the absorber 40 is constituted by the absorber core material 40a and the core material wrapping layer 40b.

The absorber core material 40a is the same as the user of the disposable disposable diaper, and the absorbent core material 40a can be suitably configured using a conventional member or material such as pulverized pulp or a superabsorbent polymer. The absorber core material 40a is wrapped around the cladding 40b by a sheet-like core material.

The core material wrap layer 40b is a sheet covering the absorber core material 40a. At least a portion of the core wrapping layer 40b on the skin contact surface side is formed of various fiber nonwoven fabrics or tissue sheets having liquid permeability.

For example, as a member constituting the core wrapping layer 40b, 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 mass of about 10 Å may be used. 30 g/m ² tissue sheet.

In addition, as shown in FIG. 3, the liquid-permeable top sheet 50 is provided on the surface side (skin contact surface side) of the absorber 40, and the back surface side (non-skin contact surface side) of the absorber 40 is provided. There is a back sheet 60.

Further, as shown in FIG. 3, a liquid-impermeable leakage preventing sheet 61 is provided between the top sheet 50 and the back sheet 60.

Side flaps 70 are provided on both side edges of the absorbent body 40 in the product width direction W. The side panel 70 is composed of one sheet or a nonwoven fabric in which a plurality of sheets or more are stacked.

Further, as shown in Fig. 1 and Fig. 2, the disposable disposable diaper 10 of the present embodiment is provided with a pair of fastening tapes 90 in the rear waistline region 30, and the non-skin contact surface side of the front waistline region 20 is predetermined. The area has a target belt 91.

Here, the buckle 90 is attached to the target belt 91, and the disposable disposable diaper 10 can be held by the wearer's body.

In the present embodiment, the waistline holding portion 115 is constituted by the front waistline region 20, the rear waistline region 30, and the buckle belt 90.

The waistline holding portion 115 of the back waistline region 30 is a range extending from the region where the engaging member of the buckle 90 is provided in the product width direction W. The waistline holding portion 115 of the front waistline region 20 is a range extending from the region where the target tape 91 is provided toward the product width direction W.

Further, as shown in FIG. 1 and FIG. 2, the disposable disposable diaper 10 of the present embodiment may further include a crotch expansion-contraction portion 200a formed in the crotch region 25 with an absorbent body. 40 in the absorber configuration area.

For example, the crotch elasticized portion 200a may be provided between the absorbent body 40 (the core wrapping layer 40b) and the leakage preventing sheet 61.

Here, the crotch stretchable portion 200a can be expanded and contracted in the longitudinal direction L of the product, and can be expanded and contracted in both the product longitudinal direction L and the product width direction W.

In this case, the underarm elastic portion 200a can also be constituted by a stretchable sheet member.

The armature expansion-contraction part 200a and the foot expansion-contraction part 75 are separately provided separately, and are comprised so that it may overlap with the absorber core material 40a (The core material wrapping layer 40b and the back surface which wrap the absorber core material 40a in this embodiment. The position between the sheets 60 is 60% or more of the length in the width direction of the absorber core material 40a at the overlapping position.

As described above, the portion in which the absorber core member 40a is disposed is contracted by the crotch expansion-contraction portion 200a, so that the absorbent core member 40a contracts, and the flat shape is easily maintained compared to the portion where the absorber core member 40a is not contracted.

In addition, the waistline region 20 and the absorber core member 440a located in the back waistline region 30 before the armpit expansion/contraction portion 200a are closer to the outer side in the longitudinal direction L of the product are not shrunk by the underarm elastic portion 200a.

Therefore, by the buckle 90, the disposable diaper is maintained in a flat shape while being held by the wearer's waist and waist. The underarm constricted portion 200a of the crotch region 25 of 10 does not excessively adhere to the wearer's body, and as a result, the underarm constricted portion 200a can be appropriately disposed along the wearer's body.

For example, as the stretchable sheet member, a stretchable film in which a thermoplastic elastomer such as urethane or styrene is melted into a film shape, a stretchable nonwoven fabric composed of stretch fibers, or a stretchable stretch can be used. A composite film such as a non-stretchable sheet which is partially cut or fragile is adhered to a film or a stretchable nonwoven fabric.

In addition, in place of the stretchable sheet member, a linear or band-shaped stretchable elastic member composed of polyurethane elastic fibers, natural rubber or the like is arranged in parallel to each other to form a crotch expansion-contraction portion 200a.

In this case, the rigidity of the absorbent core material 40a and the rigidity of the other members of the disposable disposable diaper 10 are considered, and the thickness of the elastic member to be used, the pitch of the arrangement, and the like can be appropriately selected, but here In other words, in order to shrink the absorbent core material 40a in the same manner by the underarm elasticizing portion 200a, the interval between the elastic members is preferably 7 mm or less, and more preferably 5 mm or less. Moreover, in order to shrink the absorbent core material 40a in the same manner, it is desirable to make the difference in the interval between the adjacent elastic members 2 mm or less.

Specifically, the expansion ratio of the crotch expansion-contraction portion 200a is preferably 1.2 times or more and 1.8 times or less. For example, in the present embodiment, the expansion ratio of the crotch expansion-contraction portion 200a can be set to 1.4 times.

The expansion ratio means the degree of expansion and contraction of the elastically stretchable portion 200a in the direction of expansion and contraction (in the longitudinal direction L of the product in the present embodiment), for example, The following (Formula 1) is specified.

The expansion ratio = (the length of the expansion and contraction direction of the elastically stretchable portion 200a in the maximum stretch state) / (the length of the expansion and contraction direction of the elastically stretchable portion 200a in the natural state). (1)

In the present specification, the expansion ratio is measured, for example, in the following manner.

First, in the case where the disposable disposable diaper 10 is packaged in a package or the like, the disposable disposable diaper 10 is taken out from the sealed package, in this state at 20 ° C ± 2 ° C, relative humidity 60% ± 5%. Place in the RH environment for 60 minutes.

Secondly, the length of the stretched direction of the desired region in the state (that is, the natural state) and the desired region from the natural state to when the wrinkles based on the elastic member are not visually recognized (that is, the maximum stretched state) are measured. The length of the expansion and contraction direction is calculated using the above (Formula 1).

By setting the expansion ratio of the underarm/elastic expansion portion 200a to 1.2 times or more and 1.8 times or less, it is possible to ideally follow the stretching of the wearer's skin.

For example, when the wearer makes a forward flexion posture in which the front side of the body contracts, the skin on the buttock side of the wearer extends about 30% to the state of extending the body.

In other words, when the expansion ratio of the crotch expansion-contraction portion 200a is 1.2 times or less, the expansion and contraction of the elastic contraction portion 200a in the natural state is insufficient, and the use of the underarm constriction portion 200a is not performed. Disposable The difference in the ease of bending of the disposable diaper 10 is small, and the front waistline region 20 becomes unable to stand up at a desired position.

In addition, when the expansion ratio of the underarm expansion-contraction portion 200a is made larger than 1.8 times, the contraction size of the underarm expansion-contraction portion 200a in the expansion/contraction direction is excessively large, so that the region in which the underarm expansion-contraction portion 200a exists is likely to become In a state in which the body is more closely attached, the disposable disposable diaper 10 is easily displaced toward the lower side of the wearer.

Further, as shown in FIGS. 1 and 2, the crotch expansion-contraction portion 200a is provided independently from the waistline holding portion 115 without intersecting the waistline holding portion 115.

Further, the amount of contraction of the underarm elastic portion 200a in the longitudinal direction L of the product may be 2 to 8% of the length of the product longitudinal direction L of the discarded disposable diaper 10 after use.

In addition, the amount of shrinkage refers to the length "b (mm)" when the wrinkle is small and the surface of the sample is nearly smooth, and the length of the natural state when the sample is in the direction of expansion and contraction "a (mm)" The difference can be calculated by (ba).

The inventors have confirmed that when the amount of shrinkage in the product longitudinal direction L of the underarm stretchable portion 200a is 2 to 8% of the length of the product longitudinal direction L of the discarded disposable diaper 10, it is discarded after use. During the installation of the disposable diaper 10 to the wearer, the underarm telescoping portion 200a can be easily and desirably along the wearer's body.

Here, when the contraction amount of the product length direction L of the underarm elastic portion 200a is made larger than 8%, the underarm elastic portion 200a is excessive. The shrinkage causes the length of the disposable diaper 10 of the disposable diaper 10 to be insufficient in length, making it difficult to attach the disposable disposable diaper 10 to the wearer's body, or to use the disposable disposable diaper 10 And the wearer's body becomes excessively close in the underarm region 25 and is easily displaced.

In addition, when the contraction amount in the longitudinal direction L of the underarm of the underarm stretchable portion 200a is 2% or less, it is less likely that the disposable diaper 10 is worn close to the body of the wearer after use. Effect.

Further, as shown in FIG. 1 and FIG. 2, the surface side (the top sheet 50 side) of the absorber 40 is provided with a pair of leg expansion portions which are formed along the foot opening portion 35 and which are at least extendable in the longitudinal direction L of the product. (foot wrinkles) 75.

The leg expansion and contraction portion 75 is longer in the product longitudinal direction L than the crotch expansion-contraction portion 200a, and is provided at a position outside the crotch expansion-contraction portion 200a in the product width direction W.

For example, the foot stretch portion 75 may be constituted by a predetermined number of elastic members. Further, as shown in FIGS. 1 and 2, the leg stretchable portion 75 may be formed of a stretchable sheet member similarly to the crotch stretchable portion 200a.

Specifically, the width of the stretchable sheet member (the width of the product in the product width direction W of the disposable disposable diaper 10) is at least in the underarm region 25, preferably 5 mm or more and 45 mm or less, more preferably 12.5. Mm or more and 35mm or less.

Here, when the width of the stretchable sheet member is less than 5 mm, there is no possibility that the surface of the stretchable sheet member substantially follows the wearer's foot circumference. On the other hand, when the width of the stretchable sheet member exceeds 45 mm, the area along the foot circumference becomes wider, and the stretchable sheet member is likely to be caught on the body side of the wearer or turned up.

The expansion ratio of the leg expansion and contraction portion 75 is preferably 1.5 to 2.4 times. For example, in the present embodiment, the expansion ratio of the leg stretchable portion 75 can be set to 1.9 times. The expansion ratio of the leg expansion/contraction portion 75 is defined to be the same as the expansion ratio of the crotch expansion/contraction portion 200a.

Further, as shown in FIGS. 1 and 2, the inner side of the pair of leg expansion-contraction portions 75 (the center position in the product width direction W) may be provided with one of the pair of leg-side gathers 80 extending in the longitudinal direction L of the product. .

As shown in FIGS. 1 and 2, the leg side wrinkles 80 have a joint portion 81 and a free end portion 82 where the elastic member 83 is disposed at a position opposite to the joint portion 81.

Here, the joint portion 81 may be joined to the top sheet 50, the back sheet 60 or the leakage preventing sheet 61, and the like.

Further, the end portion on the waist region 20 side and the end portion on the rear waist region 30 side before the product longitudinal direction L of the free end portion 82 are joined to the top sheet 50. The joint portion 81 is disposed between the underarm elastic portion 200a and the foot stretch portion 75 in the product width direction W.

The foot side wrinkles 80 are erected as the base end portion when worn, and are in contact with the wearer's skin with the free end portion 82 as a apex portion.

As shown in FIGS. 1 and 2, the first inflection point 116 and the second inflection point 125 are formed in the absorber 40.

Here, in the present specification, the first inflection point 116 and the second inflection point 125 do not show the notch of the absorber 40, but show the portion and the contraction that is contracted by the contraction of the underarm constriction portion 200a. The part between the parts other than the contracted part.

Further, the second inflection point 125 is located closer to the rear waistline region 30 than the first inflection point 116.

Further, the first inflection point 116 and the second inflection point 125 are configured to extend in the product width direction W, and become the bending base point of the disposable disposable diaper 10.

The above-described crotch expansion-contraction portion 200a is formed between the first inflection point 116 and the second inflection point 125.

Here, the first inflection point 116 and the second inflection point 125 are formed by a difference in rigidity between a portion that is contracted by contraction of the crotch expansion-contraction portion 200a and a portion other than the contracted portion. As a result, the disposable diaper 10 can form a flat "bottom" after use.

Further, in the present embodiment, the notch portion 110 and the notch portion 120 are formed in regions outside the L of the first inflection point 116 and the second inflection point 125, respectively. The notch portion 110 and the notch portion 120 are regions in which the absorber core member 40a constituting the absorber 40 is not present.

As shown in FIGS. 1 and 2, the notch portion 110 and the notch portion 120 are formed along the edge portion of the crotch expansion-contraction portion 200a in the longitudinal direction L of the product.

Further, in the region outside the L of the first inflection point 116 and the second inflection point 125, the basis weight of the absorber core material 40a may be made smaller. Instead of forming the notch portion 110 and the notch portion 120, the peripheral region is low.

The notch portion 110 and the notch portion 120 are formed to make the first inflection point 116 and the second inflection point 125 better.

Further, even when the notch portion 110 and the notch portion 120 are formed, the absorber core material 40a located in the front waistline region 20 and the rear waistline region 30 and the absorber core material 40a located in the crotch region 25 are not completely It is preferred to separate and form continuous.

The notch portion 110 and the notch portion 120 are configured such that the length in the product longitudinal direction L becomes longer as it goes to the outer side in the product width direction W.

With such a shape, the outer side in the width direction W of the absorbent core material 40a is more easily shrunk, and the disposable diaper 10 can be formed into a flat "bottom" after use, or can be made smaller than the notch portion. The absorber core member 40a located closer to the front waistline region 20 and the absorber core member 40a located closer to the back waistline region 30 than the notch portion 120 can stand up from the flat "bottom" and become easy toward the width of the product. The direction W is curved into a curvature along the wearer's body (abdomen and buttocks).

As shown in FIGS. 1 and 2, the edge portion of the front waistline region 20 side of the notch portion 110 and the edge portion of the notch portion 120 closer to the rear waistline region 30 side may have an arc shape.

Specifically, the edge portion of the front waistline region 20 side of the notch portion 110 has a shape in which the center of the arc is located closer to the back waistline region 30 than the edge portion, and the edge portion of the back waist region 30 side of the notch portion 120 is The center of the arc is located closer to the side of the front waistline region 20 than the edge.

With such a shape, along the wearer's body The deformation becomes easier and easier to produce significantly.

Further, the region in which the length of the absorbent body 40 in the product width direction W is the shortest is disposed in a region where the underarm elastic portion 200a is formed.

Further, the disposable disposable diaper 10 may include a pair of waist elastic-contracting portions (waist wrinkles) 210 formed in the back waistline region 30 and extending and contracting in the product width direction W.

In the present embodiment, each of the pair of crotch expansion-contraction portions 210 can be constituted by a stretchable sheet similarly to the underarm retractable portion 200a, the leg stretch portion 75, and the like. The member constituting the waist elastic-contraction portion 210 is not particularly limited, but is preferably thin as possible and has low rigidity and a small shrinkage ratio because the waist elastic-contraction portion 210 can be softly attached in the waistline direction. For the wearer's waist.

In the present embodiment, a stretchable film having a basis weight of 30 g/m ² is used as the waist stretchable portion 210.

The waist elastic-contraction part 210 is 1.5 to 2.5 times of the length extended to the non-elongation state (natural state), and is followed by the hot-melt adhesive, heat processing, etc., and the back surface sheet 60.

The absorbent core member 210 is disposed between the top sheet 50 and the back sheet 60. Further, as shown in FIG. 3, the absorber 40 may be disposed between the top sheet 50 and the waist stretch unit 210.

Alternatively, when the leakage preventing sheet 61 disposed between the absorber 40 and the back sheet 60 is provided, the waist stretchable portion 20 may be disposed between the leakage preventing sheet 61 and the back sheet 60.

As shown in FIG. 1 and FIG. 2, the waist expansion and contraction portion 210 is A pair of waist elasticized portions 210 are formed.

Further, a non-stretchable region 211 is formed between the pair of waist elasticized portions 210.

Further, as shown in FIG. 2, the pair of waist elastic-contracting portions 210 may be connected to each other at a position close to the outer side in the longitudinal direction of the product. Here, the pair of waist stretchable portions 210 may be connected by the same member as the pair of waist stretchable portions 210, or may be connected by a member different from the pair of waist stretchable portions 210.

As shown in FIG. 4, in the case where the disposable disposable diaper 10 is attached to the wearer, the non-stretchable region is a portion that contacts the periphery of the wearer's sacrum (or, corresponding to the depressed portion of the sacrum). The part of the part).

These parts are positions on the wearer's body where the muscles and fat are small and the bones (bone discs) can be easily confirmed from the outside of the wearer's body.

Here, even when the wearer moves, since the parts are close to the wearer's skeletal part, the wearer's skin surface has less movement and is less elastic in the wearer's body. The force of the disposable disposable diaper 10 can be directly applied to the bone (bone plate).

Therefore, by pressing the non-stretchable region 211 of the disposable disposable diaper 10 for the respective portions, the offset of the disposable disposable diaper 10 can be suppressed.

Moreover, even for parts with less muscle and fat components, When the non-stretchable region 211 of the disposable disposable diaper 10 is pressed, it is not easy to cause a situation in which the constituent elements of the disposable disposable diaper 10 are bitten into the wearer's skin, and the wearer's skin can be suppressed from becoming red. The situation arises.

That is, according to the disposable disposable diaper 10 according to the present embodiment, as shown in Fig. 4, the disposable diaper 10 is used along the underside of the wearer by the use of the underarm elastic portion 200a. The non-stretchable region 211 is pressed against the wearer's sacral peripheral portion by the contraction force Fw of the pair of waist elasticized portions 210 in the product width direction W, whereby the disposable back paper of the wearer's back can be suppressed. The offset of the diaper 10.

Further, as shown in FIG. 1, the pair of waist elastic-contracting portions 210 may be configured to overlap the absorber 40.

Further, as shown in FIG. 1, when the position of the pair of waist elastic-contraction portions 210 in the longitudinal direction L of the product and the position of the longitudinal direction L of the absorbent body 40 are shifted, the pair of waist elastic-contraction portions 210 and the absorbent body 40 are actually The position of the pair of waist elastic-contraction parts 210 in the product width direction W and the position of the absorbent body 40 in the product width direction W may be overlapped.

In this case, as shown in FIG. 1, in the rear waistline region 30, a region where the distance D1 is equal to or smaller than the distance D2 is provided.

Here, the distance D1 is the distance between the end portion E5 of the waist-contracting portion 210 in the product width direction W and the center line O of the disposable diaper 10 in the product width direction W.

Further, the distance D2 means the distance between the end portion E6 on the outer side in the product width direction W of the absorber 40 and the center line O.

According to this configuration, the absorber 40 extending in the central region of the product width direction W of the disposable disposable diaper 10 can be more reliably pressed against the peripheral portion of the sac of the center of the wearer's body.

Further, the end portions E7 on the outer side in the product width direction W of the waist elastic-contraction portions 210 may be configured not to overlap the base end portion 90a of the buckle 90.

According to this configuration, the non-stretchable region 212 can be provided between the end portion E7 on the outer side in the product width direction W of each of the waist elastic-contraction portions 210 and the proximal end portion 90a of the buckle 90, and the non-elastic region 212 can be pressed against the wearer. The intestinal ribs on both sides of the body and the anterior superior iliac spine can further suppress the offset of the disposable disposable diaper 10.

Further, the distance D4 between the end portion E3 on the front waistline region 20 side in the longitudinal direction L of the product of the crotch expansion-contraction portion 200a and the end portion E4 on the waistline region 20 side before the product longitudinal direction L of the disposable disposable diaper 10 The end portion E2 on the rear waistline region 30 side in the longitudinal direction L of the product of the crotch expansion-contraction portion 200a and the end portion E1 on the waistline region 30 side after the product longitudinal direction L of the disposable disposable diaper 10 can be formed. The distance D3 is short.

According to this configuration, when the disposable disposable diaper 10 is worn, it becomes a flat "bottom", and is configured to be attached to the wearer's crotch portion along the lower arm elastic portion 200a of the wearer's body. The crotch expansion-contraction portion 200a is located at a position shifted toward the abdomen side from the back side (hip side) of the wearer, and the non-expansion region 211 is in close contact with the wearer's back side. Therefore, FIGS. The portion of the area H shown is located in the wearer's The buttocks, in addition, form a space between the wearer's body and the body of the disposable disposable diaper 10.

As a result, by arranging the crotch expansion-contraction portion 200a at a position close to the front side, the region H can be more widely held, and the feces discharged by the wearer can be accommodated in the region H. Further, the underarm retractable portion 200a can be lifted toward the body of the wearer and along the body, so that the accommodated urination is less likely to flow in the front waistline direction, and as a result, the squat can be more stably The feces are kept in the disposable disposable diaper 10 to prevent leakage.

In addition, the disposable urine diaper 10 is separated from the front waistline region 20 side so that the stored urine is different from the region H, so that it does not become a state in which urine and feces are mixed. Reduce the irritation of the wearer's skin caused by the mixture of the two.

Further, a sheet (for example, the top sheet 50) on the skin contact surface side at a position corresponding to the non-stretchable region 211 may be provided with irregularities. The unevenness can be formed, for example, by forming an embossed portion partially formed by a crimped fiber or the like having a high bulkiness, or by partially changing the amount of fibers laminated on the nonwoven fabric sheet itself.

As described above, since the non-stretchable region 211 is in contact with the body of the wearer, the unevenness is provided by the sheet (for example, the top sheet 50) provided on the skin contact surface side of the wearer. It is possible to reduce the irritation to the skin caused by the close contact, and it is possible to further increase the stretch ratio of the waist stretchable portion 210, and it is also possible to make it more intimate.

Moreover, the length of the product width direction W of the non-elastic region 211 is long. The degree D5 (natural state) is configured to be longer than the length D6 (natural state) of the product width direction W of the underarm elasticizing portion 200a.

For example, the length D5 of the product width direction W of the non-stretchable region 211 may be 80 mm, and the length D6 of the product width direction W of the underarm elastic portion 200a is 70 mm.

Here, since the underarm elastic portion 200a is along the wearer's body, the disposable disposable diaper 10 can be disposed close to the wearer's body when the disposable disposable diaper 10 is worn. The location.

Therefore, by making the non-stretchable region 211 less likely to be detached from the body of the wearer, it is possible to suppress the shift of the disposable disposable diaper 10 as a whole.

In other words, the non-stretchable region 211 in the range in which the underarm elastic portion 200a corresponds to the length in the product width direction W is in close contact with the wearer's body, and the entire disposable disposable diaper 10 is prevented from shifting.

(change example)

In the armor expansion-contraction part 200a, the dart part is provided in the edge part of the length direction L of the arm of the armature expansion-contraction part 200a as the above-mentioned 1st Embodiment, and it is set as the above-mentioned expansion-

As described above, the dart portion is configured by sandwiching a part of the back sheet 60 and joining the sheets to each other in order to make the underarm elastic portion 200a a flat "bottom".

Alternatively, the crotch expansion-contraction portion 200a constitutes the crotch expansion-contraction portion 200a by the reinforcing sheet, instead of the first embodiment. It is a structure that can at least expand and contract toward the longitudinal direction L of the product.

Although the present invention has been described in detail using the above embodiments, the present invention is not limited to the embodiments described in the specification. The present invention can be implemented with various modifications and changes without departing from the spirit and scope of the invention. Therefore, the description of the specification is intended to be illustrative, and not to limit the invention.

10‧‧‧Disposable disposable diapers

20‧‧‧ Front waist area

25‧‧‧胯下区域区

30‧‧‧ Front Waist Area

35‧‧‧foot opening

40‧‧‧absorbing layer

70‧‧‧Fringe

75‧‧‧foot expansion

80‧‧‧foot folds

81‧‧‧ joint part

82‧‧‧Free end section

83‧‧‧Flexible components

90‧‧‧ buckle

90a‧‧‧ base end

91‧‧‧Target belt

110‧‧‧Gap section

115‧‧‧ Waist retention department

116‧‧‧1st recurve

120‧‧‧Gap section

125‧‧‧2nd recurve

200a‧‧‧Under the expansion and contraction department

210‧‧‧Waist expansion joint

211‧‧‧ Non-stretchable area

212‧‧‧ Non-stretchable area

D1~D4‧‧‧Distance

D5~D6‧‧‧ length

E1~E7‧‧‧ end

H‧‧‧ area

W‧‧‧Product width direction

O‧‧‧ center line

Claims (8)

A disposable disposable diaper having a front waist region, a rear waist region, and a crotch region between the front waist region and the back waist region, forming a pair of foot opening portions and having a cross-squat region The absorbent body extending toward the front waistline region and the rear waistline region further has a longitudinal direction of the product from the front waistline region toward the rear waistline region; and the product width direction orthogonal to the longitudinal direction of the product is discarded. A diaper characterized in that, in the front waistline region and the rear waistline region, the diaper is stretched along the width direction of the product, and the disposable disposable diaper is held in the waist of the wearer's body. a holding portion; a crotch stretchable portion formed in the crotch region; a waist-constraining portion that is formed in the back waist region and that is stretchable in the product width direction; and is formed in the absorbent body and extends along the product width direction a first recursive portion which becomes a bending base point of the disposable disposable diaper; and is formed on the absorbent body along the width of the product And extending in a direction to become a bending base point of the disposable disposable diaper, and located in a second recurling portion closer to the rear waistline region than the first recurve portion, the crotch expansion-contraction portion is not retained with the waist circumference The portions are provided independently from the waist holding portion, and a non-stretchable region is formed between the pair of waist stretchable portions. A disposable diaper for use in the first aspect of the invention, wherein the pair of waist elastic-contracting portions are connected to each other at a position closer to the outer side in the longitudinal direction of the product. A disposable diaper for use in the first or second aspect of the invention, wherein the crotch expansion-contraction portion is configured to expand and contract at least in the longitudinal direction of the product. A disposable disposable diaper according to any one of claims 1 to 3, wherein the first distance is an end portion of the waist-contracting portion of the waist-contracting portion in the width direction of the product, and the disposable portion is disposable. The distance between the center line in the width direction of the product of the disposable diaper, the second distance is the distance between the end portion of the absorbent body in the product width direction and the center line, and the first waist is provided in the back waist region. The distance becomes the area of the aforementioned second distance. The disposable diaper of any one of the first aspect of the invention, wherein the back waist region is provided with a buckle, and the end portion of each of the waist stretchable portions in the width direction of the product is configured. It is not to overlap with the base end portion of the aforementioned buckle. A disposable disposable diaper according to any one of claims 1 to 5, wherein the end portion of the crotch expansion-contraction portion on the front waistline region side in the longitudinal direction of the product and the disposable paper The distance between the end portions on the front waistline region side in the longitudinal direction of the product of the diaper is configured to be the end portion on the rear waistline region side in the longitudinal direction of the product of the crotch expansion-contraction portion, and the disposable paper. The length of the aforementioned article of the diaper The distance between the ends on the side of the rear waist region is short. A disposable diaper for use in any one of the first to sixth aspects of the invention, wherein the sheet on the skin contact surface side at a position corresponding to the non-stretchable region is provided with irregularities. The disposable disposable diaper according to any one of claims 1 to 7, wherein the length of the product in the width direction of the non-stretchable region is configured to be longer than the width direction of the product of the crotch stretchable portion. long.