TWI612947B - Disposable disposable diaper - Google Patents

Abstract

An object of the present invention is to provide a disposable diaper having a structure that does not place an excessive load on the skin of a wearer and can be fitted to the body of the wearer and is not easily displaced from the body of the wearer ( 10).

The means to solve the problem is that the disposable diaper (10) of the present invention includes: formed on an absorbent body (40), extending in the width direction (W) of the product and becoming a disposable diaper. (10) the first inflection part (116) of the bending base point; and formed on the absorbent body (40), extending along the width direction (W) of the product and becoming the bending base point of the disposable diaper (10), In addition, the second recurved portion (125), which is located closer to the back waist region side than the first reflexed portion (116), does not cross the waistline retaining portion (115) from the waistline holding portion (115) and extends from the waistline. The holding portion (115) is provided independently, and a non-stretchable region (211) is formed between the pair of waist-length telescopic portions (210).

Description

Disposable diapers

This invention relates to disposable diapers.

Conventionally, it has a front waistline region, a back waistline region, and a crotch region located between the front waistline region and the back waistline region, and has a pair of foot circumference openings, and includes a front waistline region and a back waistline region that span the lower crotch region. Disposable disposable diapers are known for stretched absorbents.

Here, in order to fit the disposable diaper to the body of a wearer, it is proposed to provide an elastic element in the waist region of the disposable diaper (see Patent Document 1).

[Advanced technical literature] [Patent Literature]

[Patent Document 1] Japanese Patent No. 4824013

However, in order to make use of the disposable diaper waist The structure of the area (elastic body elements) fits the wearer's body after use. The overall structure of the waist area must improve the fit to the body of the wearer. The problem of increasing the load on your skin.

In addition, in the conventional tape-type disposable diaper, when the wearer's feet move, the wearer becomes a hug posture, etc., the disposable diaper will be worn by the wearer. Once the offset occurs, there will be a problem of the disposable diaper, which is separated from the wearer's body in the area from the wearer's back to the lower part of the hip.

Therefore, the present invention has been developed in view of this situation, and an object of the present invention is to provide a wearer's body that does not place an excessive load on the wearer's skin and fits on the body of the wearer. Deviated structure of disposable diapers.

A first feature of the present invention is a disposable diaper having a front waist region, a rear waist region, and a crotch region located between the front waist region and the rear waist region, and a pair of foot openings are formed. And also has an absorbent body extending across the chin area toward the front waistline region and the rear waistline region, and also has a product length direction from the front waistline region to the rear waistline region; and orthogonal to the length direction of the product The disposable diapers in the width direction of the product are characterized by having: The front waist region and the rear waist region are configured to extend along the width direction of the product and hold the disposable diaper on the waist holding portion of the body of the wearer; A crotch stretch portion; a pair of waist stretch portions formed in the aforementioned rear waistline region and capable of expanding and contracting in the width direction of the product; formed in the absorbent body, extending along the width direction of the product and becoming the disposable disposable diaper The first curved portion of the curved base point; and the curved base point formed on the absorbent body, extending along the width direction of the product and becoming the disposable disposable diaper, and located closer to the rear portion than the first curved portion The second recurved portion on the waistline region side is provided independently from the waistline holding portion without intersecting the waistline holding portion with the crotch stretch portion, and a non-stretchable area is formed between the pair of waistline stretching portions.

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

10‧‧‧ disposable diapers

20‧‧‧ front waist area

25‧‧‧Her area

30‧‧‧ back waist area

35‧‧‧foot circumference opening

40‧‧‧ Absorptive layer

40a‧‧‧ Absorber core material

40b‧‧‧Core Wrap

50‧‧‧ top sheet

60‧‧‧Back sheet

61‧‧‧Leakproof sheet

70‧‧‧flank

75‧‧‧foot telescopic section

80‧‧‧ Wrinkles on the feet

81‧‧‧ Junction

82‧‧‧Free End Section

90‧‧‧ buckle

91‧‧‧ target zone

115‧‧‧ Waist circumference retaining section

116‧‧‧First Recurve

125‧‧‧ 2nd Recurve

200a‧‧‧ 胯 The telescopic part

210‧‧‧Waist Stretch

211‧‧‧non-stretchable area

FIG. 1 is an unfolded flat diaper according to the embodiment of the present invention, and the elastic members constituting the leg expansion and contraction and the side-side wrinkles are unfolded and expanded. An example of a surface map.

FIG. 2 is an example of a developed plan view of a disposable diaper after use, according to the embodiment of the present invention, in a state where the elastic members constituting the leg expansion and contraction and the side folds are extended.

Fig. 3 is a cross-sectional view of the disposable diaper of the present embodiment, taken along line F-F shown in Fig. 1.

FIG. 4 is a view schematically showing a wearing state of the disposable diaper according to the embodiment of the present invention when it is installed on a wearer.

A disposable diaper 10 according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 4.

In the following drawings, the same or similar parts are assigned the same or similar symbols. However, the drawing is for schematic display, please note that the ratio of each size will be different from the real thing.

Therefore, specific dimensions and the like should be judged with reference to the following description. In addition, the respective drawings may include portions having different dimensional relationships, ratios, and the like.

In the present embodiment, the tape-type disposable diaper 10 is described as an example, but the present invention is also applicable to a pant-type disposable diaper 10.

1 and 2 are developed plan views of the disposable diaper 10 of the present embodiment, and FIG. 3 is a cross-sectional view of the disposable diaper 10 of the present embodiment along the line FF of FIG. 1. , Figure 4 is schematically The figure which shows the wearing state of the disposable diaper 10 of this embodiment installed to the wearer.

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

Here, the front waistline region 20 is a portion that is in contact with the front waistline portion of the wearer, the rear waistline region 30 is a portion that is in contact with the back waistline portion of the wearer, and the crotch region 25 is located between the front waistline area 20 and The portion between the rear waistline regions 30.

In this embodiment, a direction from the front waistline region 20 to the rear waistline region 30 is referred to as a product length direction L, and a direction orthogonal to the product length direction L is referred to as a product width direction W.

The disposable diaper 10 according to this embodiment is provided with an absorbent body 40 that extends over the chin area 25 and extends to the front waistline area 20 and the rear waistline area 30. As shown in FIG. 3, the absorber 40 is comprised by the absorber core material 40a and the core material wrapping layer 40b.

The absorbent core material 40a is the same as that of a user of a conventional disposable diaper, and the absorbent core material 40a can be appropriately configured using known members or materials such as pulverized pulp and superabsorbent polymers. The absorbent core material 40a is enclosed by a sheet-like core material around the cladding layer 40b.

The core material wrapping layer 40b is a sheet | seat which covers the absorber core material 40a. At least a part of the skin-contacting surface side of the core wrapping layer 40b is composed of various fibrous nonwoven fabrics or tissue paper sheets having liquid permeability.

For example, layer 40b of the member as a core material around the package, can be a mass of about 10 ~ 30g / m hot fiber nonwoven fabric ^2, spunbond nonwoven fabric, SMS (spunbonded - melt-blown - spunbond) nonwoven fabric, or a mass of about 10 ~ 30g / m ² thin paper sheet.

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

As shown in FIG. 3, a liquid-tight leak-proof sheet 61 is provided between the top sheet 50 and the back sheet 60.

Side edges 70 are provided on both edge portions of the absorbent body 40 in the width direction W of the product. The side flap 70 is composed of one or a plurality of non-woven fabrics stacked on top of each other.

Also, as shown in FIGS. 1 and 2, the disposable diaper 10 according to this embodiment is provided with a pair of buckles 90 at the rear waistline region 30, and is scheduled at the non-skin contact surface side of the front waistline region 20. The area is provided with a target band 91.

Here, the buckle 90 is attached to the target tape 91, and can hold the disposable diaper 10 to the wearer's body.

In this embodiment, the waist circumference holding portion 115 is constituted by the front waistline area 20, the rear waistline area 30, and the buckle 90.

The waist circumference holding portion 115 of the rear waistline area 30 is a range extending from the area where the fastening member 90 is provided to the product width direction W. The waistline holding portion 115 of the front waistline region 20 is a range extending from the area where the target band 91 is provided in the product width direction W.

As shown in FIG. 1 and FIG. 2, the disposable diaper 10 according to this embodiment may also include a crotch stretch portion 200 a which is formed in an absorbent body disposed in the lower crotch region 25. 40 absorber placement area.

For example, the crotch stretch portion 200 a may be provided between the absorber 40 (the core material wrapping layer 40 b) and the leak-proof sheet 61.

Here, the crotch stretchable portion 200a can expand and contract in the product length direction L, and can also expand and contract in both the product length direction L and the product width direction W.

In this case, the chin-down telescopic portion 200a may be configured by a stretchable sheet member.

The lower telescoping section 200a is provided separately from the foot telescoping section 75, and is configured to overlap with the absorbent core material 40a (in this embodiment, the core material wrapping layer 40b that surrounds the absorbent core material 40a and the back surface) Position between the sheets 60), and the widthwise length of the absorbent core material 40a at the overlapping position is reduced by 60% or more.

As described above, the portion where the absorbent core material 40a is disposed is contracted by the lowered elastic portion 200a, so that the absorbent core material 40a is contracted, and it is easier to maintain a flat shape than the non-contracted portion of the absorbent core material 40a.

In addition, the waistline area 20 located before the waistline area 200a, which is closer to the outer side of the product in the longitudinal direction L, and the absorbent core material 440a, which is located in the rear waistline area 30, are not contracted by the waistline area 200a.

Therefore, the buckle 90 is maintained in a flat shape on the disposable diaper while being held on the wearer's waist and waistline. The lower-stretch telescopic portion 200a of the lower-stretch region 25 of 10 does not excessively come into close contact with the body of the wearer. As a result, the lower-stretch telescopic portion 200a can be appropriately arranged along the body of the wearer.

For example, as the stretchable sheet member, a thermoplastic elastomer resin such as urethane, styrene, or the like can be used to form a film-like stretchable film, a stretchable nonwoven fabric made of stretchable fibers, or Laminated films, stretchable non-woven fabrics, etc. are laminated to non-stretchable sheets that are partially cut or weakened.

Further, instead of the stretchable sheet member, linear and band-shaped stretchable elastic members made of polyurethane elastic fibers, natural rubber, and the like are arranged in parallel with each other to form the lower diaphragm stretch portion 200a.

In this case, considering the rigidity of the absorbent core material 40a and the rigidity of other members constituting the disposable diaper 10 after use, the thickness of the elastic member to be used, the pitch of the arrangement and the like can be appropriately selected, but here In some cases, in order to cause the absorbent core material 40a to contract uniformly by the lowered elastic portion 200a, the interval between the elastic members is preferably 7 mm or less, and more preferably 5 mm or less. In order to shrink the absorbent core material 40 a equally, it is desirable to make the difference in the distance between adjacent elastic members 2 mm or less.

Specifically, it is preferable that the expansion and contraction ratio of the chin-down telescopic portion 200a is 1.2 times or more and 1.8 times or less. For example, in this embodiment, the expansion and contraction ratio of the lower extension unit 200a can be set to 1.4 times.

The expansion ratio means the degree of expansion and contraction of the expansion and contraction portion 200a below the expansion direction (the product direction L in this embodiment). (Equation 1) below.

Stretch ratio = (length of the telescopic direction of the telescopic section 200a under the maximum stretched state) / (length of the telescopic direction of the telescopic section 200a under the natural state of stretch) ... (Formula 1)

In addition, in this specification, this stretch ratio is measured as follows, for example.

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

Secondly, the length in the direction of expansion and contraction of the desired region in this state (that is, the natural state) is measured, and the desired region extending from the natural state to when the wrinkles based on the elastic member cannot be visually recognized (that is, the maximum stretched state) is measured. For the length in the direction of expansion and contraction, the expansion ratio is calculated using the above-mentioned (Expression 1).

As described above, by setting the expansion ratio of the chin-constricted portion 200a to 1.2 times or more and 1.8 times or less, it is possible to ideally follow the wear and tear of the skin of the wearer.

For example, when the wearer makes a forward bending posture such as contraction of the front side of the body, the skin on the buttocks side of the wearer extends about 30% to the state where the body is extended.

That is, when the expansion ratio of the under-the-bottom telescopic portion 200a is made 1.2 times or less, the under-the-bottom telescopic portion 200a does not expand sufficiently in the natural state. Disposable The difference in the ease of bending of the diaper 10 is small, and the front waistline region 20 cannot stand up at a desired position.

In addition, when the expansion ratio of the crotch telescopic portion 200a is made larger than 1.8 times, since the contraction dimension in the expansion direction of the crotch telescopic portion 200a becomes too large, the area where the crotch telescopic portion 200a exists tends to be relatively large. The tighter state along the body causes the disposable diaper 10 to be easily displaced toward the lower side of the wearer.

In addition, as shown in FIGS. 1 and 2, the chin-down telescopic portion 200 a is provided independently from the waist circumference holding portion 115 without intersecting the waist circumference holding portion 115.

In addition, the amount of shrinkage in the product length direction L of the lowered elastic portion 200a may be configured to be 2 to 8% of the length in the product length direction L of the disposable diaper 10 after use.

In addition, the amount of shrinkage refers to the length "b (mm)" in a state where the wrinkles become smaller and the surface of the sample becomes nearly smooth, and the length "a (mm)" of the sample in its natural state along the direction of expansion and contraction. The difference can be calculated by (ba).

The present inventors confirmed that when the shrinkage amount in the product length direction L of the lowered elastic portion 200a is taken as 2 to 8% of the length in the product length direction L of the disposable diaper 10, the disposable product is discarded after use. During the process of installing the disposable diaper 10 on the wearer, it is easy to ideally follow the wearer's body by pulling down the stretchable portion 200a.

Here, when the contraction amount of the product length direction L of the chin extension part 200a is made larger than 8%, the chin extension part 200a may be excessive. Shrinkage causes the length L of the product of the disposable diaper 10 to be insufficient, making it difficult to install the disposable diaper 10 on the body of the wearer, or the disposable diaper 10 And the wearer's body becomes excessively intimately in the crotch region 25 and easily shifts.

In addition, when the contraction amount in the product length direction L of the crotch elastic portion 200a is set to 2% or less, it is difficult for the disposable diaper 10 to be close to the wearer's crotch elastic portion 200a after use. Effect.

As shown in FIGS. 1 and 2, the front surface side (top surface sheet 50 side) of the absorbent body 40 is provided with one pair of foot expansion and contraction portions formed along the foot circumference opening portion 35 and capable of expanding and contracting at least in the product length direction L (Foot folds) 75.

The foot telescopic portion 75 is located in the length direction L of the product, and is longer than the inferior telescopic portion 200a, and is provided at a position outside the inferior telescopic portion 200a in the product width direction W.

For example, the foot expansion-contraction part 75 may be comprised by the predetermined number of elastic members. Moreover, as shown in FIG.1 and FIG.2, the foot expansion-contraction part 75 may be formed with the elastic sheet member similarly to the crotch expansion-contraction part 200a.

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

Here, when the width of the stretchable sheet member is less than 5 mm, there is an effect that it is impossible to substantially face the wearer's feet around the face, When the width of the stretchable sheet member exceeds 45 mm, the area along the foot circumference becomes wider, which easily causes the stretchable sheet member to be rolled into the body of the wearer or turned upside down.

The expansion ratio of the leg expansion portion 75 is preferably 1.5 to 2.4 times. For example, in this embodiment, the expansion ratio of the leg expansion-contraction part 75 can be set to 1.9 times. The expansion and contraction ratio of the leg expansion and contraction portion 75 is limited in the same manner as the expansion and contraction ratio of the above-mentioned chin expansion and contraction portion 200a.

As shown in FIGS. 1 and 2, a pair of foot-side wrinkles 80 extending along the product length direction L may be provided inside the pair of foot telescopic portions 75 (close to the center position in the product width direction W). .

As shown in FIGS. 1 and 2, the instep wrinkle 80 includes: a joint portion 81; and a free end portion 82 on which the elastic member 83 is disposed at a position opposite to the joint portion 81.

Here, the bonding portion 81 may be bonded to the top sheet 50, the back sheet 60, the leak-proof sheet 61, or the like.

Further, an end portion on the front waistline region 20 side and an end portion on the rear waistline region 30 side of the product length direction L of the free end portion 82 are joined to the top sheet 50. The joint portion 81 is arranged in the width direction W of the product, and is arranged between the under-contract stretch portion 200 a and the leg stretch portion 75.

The foot-side folds 80 stand up with the joint portion 81 as a base end portion when being worn, and the free end portion 82 as a vertex portion is in contact with the skin of the wearer.

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

Here, in the present specification, the first and second inflection points 116 and 125 do not show the gaps in the absorber 40, but show that they are generated in a part that is contracted by the contraction of the contraction-contractible part 200a and the substrate. The part between parts other than the contracted part.

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

The first inflection point 116 and the second inflection point 125 are configured to extend along the width direction W of the product, and serve as the bending base points of the disposable diaper 10 after use.

The aforementioned chin extension part 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 using the difference in rigidity between the portion contracted by the contraction of the chin-constricted portion 200a and the 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, a notch portion 110 and a notch portion 120 are formed in regions outside L of the first and second inflection points 116 and 125, respectively. The cutout portion 110 and the cutout portion 120 are regions in which the absorbent core material 40 a constituting the absorbent body 40 does not exist.

As shown in FIG. 1 and FIG. 2, the cutout portion 110 and the cutout portion 120 are formed along edges of the product lengthwise direction L of the lower extension portion 200 a.

In addition, in the area outside the L of the first inflection point 116 and the second inflection point 125, the basis weight of the absorbent core material 40a can be made smaller. The peripheral region is low instead of forming the notch portion 110 and the notch portion 120.

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.

Furthermore, even in the case where the notch portion 110 and the notch portion 120 are formed, the absorbent core material 40a located in the front waist region 20 and the rear waist region 30 and the absorbent core material 40a located in the lower hip region 25 will not be completely completed. It is better to separate and form continuous.

The notch part 110 and the notch part 120 are comprised so that the length of the product length direction L may become long as it goes to the product width direction W outside.

With such a shape, the outer side of the product width direction W of the absorbent core material 40a can be more easily shrunk, and the disposable diaper 10 can be formed into a flat "bottom" after use. 110 the absorbent core material 40a located closer to the front waist region 20 side and the absorbent core material 40a located closer to the rear waist region 30 side than the notch portion 120 can stand up from the flat "bottom", making it easier to reach the width of the product The direction W is curved in an arc along the body (abdomen and hips) of the wearer.

As shown in FIGS. 1 and 2, the edge portion of the notch portion 110 on the front waistline region 20 side and the edge portion of the notch portion 120 closer to the rear waistline region 30 side may be arc-shaped.

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 rear waistline region 30 side than the edge portion. The center of the arc is located closer to the front waistline region 20 side than the edge portion.

With this shape, the arc of the wearer ’s body Deformation becomes easier and noticeable.

The region having the shortest length in the product width direction W of the absorbent body 40 is disposed in a region where the lower chin stretch portion 200 a is formed.

Moreover, the disposable diaper 10 may be provided with a pair of waist expansion-contraction part 210 (waist pleats) 210 formed in the rear waistline area 30 and which can expand and contract in the width direction W of a product.

In this embodiment, each of the pair of chin extensions 210 can be formed of a stretchable sheet similarly to the chin extensions 200a, the foot extensions 75, and the like. The member constituting the waist elastic section 210 is not particularly limited, but it is desirable to use as thin and low rigidity as possible, and the shrinkage ratio is as small as possible because the waist elastic section 210 can be softly and tightly adhered in the waist direction. To the waist of the wearer.

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

The waist circumference stretchable part 210 is stretched 1.5 to 2.5 times the length of the non-stretched state (natural state), followed by hot-melt adhesive or heat treatment, and then to the back sheet 60.

The absorptive core material 210 is disposed between the top sheet 50 and the back sheet 60. Further, as shown in FIG. 3, an absorber 40 may be disposed between the top sheet 50 and the waist elastic portion 210.

Alternatively, when a leak-proof sheet 61 is provided between the absorbent body 40 and the back sheet 60, the waist elastic section 20 may be disposed between the leak-proof sheet 61 and the back sheet 60.

As shown in FIG. 1 and FIG. 2, the waist extension 210 is formed by A pair of waist circumference expansion-contraction parts 210 is comprised.

In addition, a non-stretchable region 211 is formed between the pair of waistline stretchable portions 210.

Furthermore, as shown in FIG. 2, the pair of waist circumference stretchable portions 210 may be configured to be connected near the outside in the longitudinal direction of the product. Here, the pair of waist circumference telescopic portions 210 may be configured to be connected by the same member as the pair of waist circumference telescopic portions 210, or may be connected by a member different from the pair of waist circumference telescopic portions 210.

As shown in FIG. 4, in the case where the disposable diaper 10 is installed on the wearer after use, the non-stretchable area is a part that contacts the periphery of the wearer's sacral bone (or a depression corresponding to the sacral bone) Of the part).

These parts are positions on the wearer's body that have less muscle and fat content and can easily confirm the presence of bones (bone discs) from the outside of the wearer's body.

Here, even when the wearer moves, these parts are close to the bones of the wearer, so there is less movement on the wearer's skin surface, and the wearer's body has less elasticity. Therefore, The force of pressing the disposable diaper 10 can be directly applied to the bone (pelvic disc).

Therefore, by pressing the non-stretchable area 211 of the disposable diaper 10 to these parts, it is possible to suppress the displacement of the disposable diaper 10.

Also, even for areas with less muscle and fat content, The non-stretchable area 211 of the disposable diaper 10 after use is not easy to cause the constituent elements of the disposable diaper 10 to bite into the wearer's skin, which can suppress the wearer's skin from turning red. The situation arises.

That is, if the disposable diaper 10 according to this embodiment is used, as shown in FIG. 4, the disposable diaper 10 is used along the lower part of the wearer's crotch by the use of the retractable portion 200 a. By using the contraction force Fw of the product width direction W of the pair of waist stretch portions 210, the non-stretchable area 211 is pressed against the wearer's sacral peripheral part, thereby suppressing the disposable paper of the wearer's back Offset of the diaper 10.

Further, as shown in FIG. 1, the pair of waist circumference stretchable portions 210 may be configured to overlap the absorbent body 40.

In addition, as shown in FIG. 1, when the position of the product length direction L of the pair of waist elastic portions 210 and the position of the product length direction L of the absorbent body 40 are shifted, the pair of waist elastic portions 210 and the absorbent body 40 are actually It does not need to overlap, and it may be comprised so that the position of the product width direction W of a pair of waist expansion-contraction part 210, and the position of the product width direction W of the absorber 40 may overlap.

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

Here, the distance D1 refers to the distance between the end portion E5 inside the product width direction W of each waist stretch portion 210 and the center line O of the product width direction W of the disposable diaper 10.

The distance D2 refers to the distance between the end portion E6 on the outer side in the product width direction W of the absorbent body 40 and the center line O.

According to this structure, the absorbent body 40 extending in the center region of the product width direction W of the disposable diaper 10 can be more surely pressed on the peripheral part of the sacral bone located in the center of the wearer's body.

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

According to this structure, a non-stretchable region 212 can be provided between the end portion E7 on the outer side of the product width direction W of each waist elastic portion 210 and the base end portion 90a of the buckle 90, and the non-stretchable region 212 can be pressed against the wearer. The iliac crest and anterior superior iliac spine on both sides of the body can further suppress the displacement of the disposable diaper 10 after use.

In addition, the distance D4 between the end portion E3 on the front waistline region 20 side in the product length direction L of the lowered elastic portion 200a and the end portion E4 on the waistline region 20 side in the product length direction L of the disposable diaper 10 It can be formed between the end portion E2 on the back waist region 30 side and the end portion E1 on the waist region 30 side of the product length direction L of the disposable disposable diaper 10 after the product length direction L of the lower telescopic portion 200a. The distance D3 is short.

According to this structure, when the disposable diaper 10 is worn, it becomes a flat "bottom", and it is comprised so that it may be attached to the lower part of the wearer's crotch along the lower stretch part 200a of a wearer's body. The subcondylar telescopic portion 200a exists in a position shifted toward the abdomen side than the wearer's back side (hip side), and the non-stretchable area 211 is in close contact with the wearer's back side. Therefore, FIGS. 1 and 2 The area of the area H shown becomes both The buttocks also form a space between the body of the wearer and the body of the disposable diaper 10 after use.

As a result, by disposing the chin-down telescopic portion 200a near the front side, the aforementioned region H can be more widely held, and the feces discharged by the wearer can be accommodated in the region H. In addition, the chin extension 200a can be lifted toward the position close to the wearer's body and moved along the body, so that the contained feces do not easily flow toward the front waistline. As a result, it is possible to more stably The feces are held in the disposable diaper 10 to prevent leakage.

Moreover, it is mainly because the urine that is stored is separated from the area H at the side near the front waist area 20 of the disposable diaper 10 after use, so it will not be a state where urine and feces are mixed. Reduce the irritation of the wearer's skin caused by the combination of the two.

Further, the 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 unevenness. The unevenness can be formed, for example, by forming an embossed portion on a non-woven fabric having a high bulkiness using crimped fibers or the like, or by partially changing the amount of fibers laminated on the non-woven sheet itself.

As described above, since the non-stretchable region 211 is a portion that is in close contact with the body of the wearer, by providing unevenness on a sheet (for example, the top sheet 50) provided on the skin abutment surface side of the wearer, It can reduce the irritation to the skin caused by the close contact, can further increase the stretch ratio of the waist circumference stretchable portion 210, and can also be made into a more close contact state.

The length of the product width direction W of the non-stretchable region 211 The degree D5 (natural state) is configured to be longer than the length D6 (natural state) of the product width direction W of the lower extension part 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 lower telescopic portion 200 a is 70 mm.

Here, since the crotch retractable portion 200a is along the body of the wearer, when the disposable diaper 10 is worn, the disposable diaper 10 can be disposed close to the body of the wearer. Its location.

Therefore, by making the non-stretchable region 211 difficult to disengage from the body of the wearer, it is possible to suppress the displacement of the disposable diaper 10 as a whole.

That is, the non-stretchable area 211 corresponding to the length range of the width direction W of the product under the crotch stretchable portion 200 a is brought into close contact with the body of the wearer, thereby suppressing the displacement of the disposable diaper 10 as a whole after use.

(Change example)

Instead of being configured to expand and contract at least in the product longitudinal direction L, the lower telescopic section 200a is provided with a dart section at the edge of the product longitudinal direction L of the lower telescopic section 200a as in the first embodiment.

The dart part is configured as described above, and is configured by holding a part of the back sheet 60 and joining the sheets in order to make the lowered telescopic part 200a a flat "bottom".

Alternatively, the crotch stretch portion 200a is formed by a reinforcing sheet to form a subcontract stretch portion 200a, instead of being configured as in the aforementioned first embodiment. It is a structure that can expand and contract at least in the length direction L of the product.

As mentioned above, although this invention was demonstrated in detail using the said embodiment, this invention is not limited to a person skilled in the art by the embodiment described in this specification. The present invention can be implemented with various modifications and changes without departing from the technical idea and scope of the present invention as defined by the description of the scope of patent application. Therefore, the description purpose of this specification is for illustration, and is not intended to limit the present invention.

10‧‧‧ disposable diapers

20‧‧‧ front waist area

25‧‧‧Her area

30‧‧‧ front waist area

35‧‧‧foot circumference opening

40‧‧‧ Absorptive layer

70‧‧‧flank

75‧‧‧foot telescopic section

80‧‧‧ Wrinkles on the feet

81‧‧‧ Junction

82‧‧‧Free End Section

83‧‧‧ Elastic member

90‧‧‧ buckle

90a‧‧‧base end

91‧‧‧ target zone

110‧‧‧ gap

115‧‧‧ Waist circumference retaining section

116‧‧‧First Recurve

120‧‧‧ gap

125‧‧‧ 2nd inflection point

200a‧‧‧ 胯 The telescopic part

210‧‧‧Waist Stretch

211‧‧‧non-stretchable area

212‧‧‧Non-retractable area

D1 ~ D4‧‧‧Distance

D5 ~ D6‧‧‧length

E1 ~ E7‧‧‧End

H‧‧‧area

W‧‧‧Product width direction

O‧‧‧ center line

Claims (9)

A disposable disposable diaper is provided with a front waist region, a rear waist region, and a crotch region located between the front waist region and the back waist region. A pair of foot circumference openings are formed and the spanning region is provided. The absorbent body extending toward the front waistline region and the rear waistline region also has a product length direction from the front waistline region to the rear waistline region; and a product widthwise direction orthogonal to the lengthwise direction of the product is discarded after use. The disposable diaper is characterized in that it is configured to extend along the width direction of the product in the front waist region and the rear waist region and to hold the disposable diaper on the waist of the wearer's body. A holding portion; a crotch stretch portion formed in the aforementioned crotch region; a pair of waist stretch portions formed in the back waist region and capable of expanding and contracting in the width direction of the product; formed on the absorbent body and extending along the width direction of the product; The first inflection portion serving as a bending base point of the disposable paper diaper; and formed on the absorbent body along the width of the product It extends in the direction and becomes the bending base point of the disposable disposable diaper, and is located at the second recurved portion closer to the back waist area side than the first recurved portion. The crotch elastic portion is not maintained with the waist. The cross-sections are provided independently from the waist-retaining portion, and a non-stretchable region is formed between the pair of waist-retractable portions, The distance between the end portion on the front waist region side of the product length direction of the crotch stretch portion and the end portion on the front waist region side of the product length direction of the disposable paper diaper is configured to be relatively short. The distance between the end portion on the back waist region side of the product length direction of the crotch stretch portion and the end portion on the back waist region side of the product length direction of the disposable diaper is short. A notch portion is formed on the outer region of the product in the longitudinal direction of the 1-reflection portion and on the outer region of the product in the longitudinal direction of the second recurved portion, and the notch is formed along the longitudinal direction of the product of the crotch elastic portion. The edge portion is formed, and the length in the longitudinal direction of the product becomes longer as it travels outward in the width direction of the product. For example, the disposable diaper of the first scope of the patent application, wherein the aforementioned pair of waist expansion and contraction parts is configured to be connected near the outside in the longitudinal direction of the product. For example, the disposable diaper after use of item 1 or 2 of the scope of patent application, wherein the crotch stretch portion is configured to be stretchable at least in the length direction of the product. For example, the disposable disposable diapers according to item 1 or 2 of the scope of patent application, wherein the first distance is the inner end of each of the aforementioned products in the width direction of the waist elastic portion and the aforementioned disposable disposable diapers. The second distance is the distance between the center line in the width direction of the product, and the second distance is the distance between the end in the width direction outside of the product and the center line, In the rear waistline region, a region in which the first distance becomes the second distance is provided. For example, the disposable diaper used in the first or second scope of the patent application, wherein the back waist region is provided with a buckle, and the outer ends of the respective waist width expansion and contraction parts of the product in the width direction are not connected with the foregoing. The base ends of the buckle are overlapped. For example, the disposable paper diaper used in item 1 or 2 of the scope of patent application, wherein the sheet on the skin contact surface side at a position corresponding to the aforementioned non-stretchable area is provided with unevenness. For example, the disposable paper diaper after use of item 1 or 2 of the patent application scope, wherein the length in the width direction of the product in the non-stretchable region is longer than the length in the width direction of the crotch elastic portion. For example, the disposable diaper after application of item 1 or 2 of the patent scope, wherein the crotch stretch portion is formed by a stretchable sheet or elastic members arranged at intervals of 7 mm or less. For example, the disposable disposable diapers in the first or second application scope of the patent application, wherein the amount of expansion and contraction in the longitudinal direction of the product of the crotch elastic portion is 2 to 8 of the length in the longitudinal direction of the disposable disposable diaper product. %.