TWI645841B - Disposable disposable diaper - Google Patents

Abstract

In the disposable disposable diaper (1), at least the outer side in the product width direction (W) of the position of the maximum width (Wnax) of the absorbent body (2C) is provided to be at least stretchable toward the longitudinal direction (L) of the product. The elastic member (3) around the pair of feet is in the product width direction at the position of the inner width direction (W) of the elastic member (3) around the foot and the maximum width (Wmax1/Wmax2) of the absorbent body (2C). On the outer side, at least one pair of inner elastic members (4) that are expandable in the longitudinal direction (L) of the product are provided, and in the ventral side (F), the narrow portion (2C1) reaches the elastic member around the foot (3) The effective length (R1) of the product in the longitudinal direction (L) of the product, in the product length direction (L), the effective length of the inner side elastic member (4) (F1) (E1), It exists in the range (R2) in which the narrow part (2C1) is provided.

Description

Disposable disposable diaper

The present invention relates to a disposable disposable diaper.

Conventionally, in order to conform the shape of the absorbent body in the disposable disposable diaper to the shape of the user's body, it is known that a narrow portion is provided in the absorbent body in the lower femoral domain of the disposable disposable diaper. Technology.

Here, in the submerged field of the disposable disposable diaper having the absorbent body provided with the above-described narrowed portion, in order to improve the adhesion and the mounting feeling, it is known to provide the first lower elastic member around the longitudinal direction of the product. A technique of providing a second lower peripheral elastic member along the longitudinal direction of the product in the inner side in the product width direction of the elastic member around the first strand (for example, see Patent Document 1).

[Practical Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2008-119416

However, in the disposable disposable diaper described above, the second lower peripheral elastic member is provided in the field of overlapping the absorbent body in the lower femoral region.

Here, in the lower femoral region, when the disposable disposable diaper is attached to the user, the left and right feet of the user hold the portion where the load is most applied to the absorbent body, and the absorbent body is an easily deformable portion.

In the above-mentioned disposable disposable diaper, in the field of overlapping with the easily deformable portion, that is, the absorbent body of the lower femoral region, since the second lower peripheral elastic member is provided along the longitudinal direction of the product, in the sub-femoral region, Such a second lower peripheral elastic member deforms the absorbent body along the longitudinal direction of the product by the contraction force, and has a problem that the absorbent body cannot exhibit the desired absorption performance.

Here, the present invention has been made in view of the above problems, and an object thereof is to provide a disposable disposable diaper which can exhibit desired absorption performance even when a narrow portion is provided in the absorbent body.

According to a first aspect of the present invention, there is provided an absorbent body which is disposed between a top sheet and a lining sheet and the top sheet and the lining sheet, and has an absorbent body which is disposed between the top sheet and the lining sheet and the lining sheet. In the longitudinal direction of the product, the back side and the ventral side are defined, and at least one pair of elastic members around the foot that are expandable and contractible in the longitudinal direction of the product are provided on the outer side in the width direction of the product at the position of the maximum width of the absorbent body. The outer side in the product width direction of the elastic member around the leg and the outermost width of the absorbent body in the outer width direction of the product are provided with at least one pair that is stretchable in the longitudinal direction of the product. In the inner elastic member, the absorbent body has a narrow portion, and in the front side, the narrow portion reaches the outer side in the longitudinal direction of the product in a range longer than the effective length of the elastic member around the foot, and the length of the product is In the direction, the end edge of the ventral side of the effective length of the inner elastic member is present in a range in which the narrow portion is provided.

B‧‧‧ Back side

C‧‧‧ absorber

E1‧‧‧ edge

E2‧‧‧ both ends

F‧‧‧ Ventral

L‧‧‧Product length direction

W‧‧‧Product width direction

Wf‧‧‧ distance

Wmax1‧‧‧Max width

Wmax2‧‧‧Max width

1‧‧‧Disposable disposable diapers

2A‧‧‧ top sheet

2B‧‧‧Nonwoven sheet

2C‧‧‧ absorber

2C1‧‧‧Stenosis

2D‧‧‧ lining sheet

3‧‧‧ elastic members around the foot

4‧‧‧Inside elastic member

5‧‧‧Leakproof wall

5A‧‧‧Fixed Department

5B‧‧‧立起部

5C‧‧‧Leakproof wall

R1‧‧‧ Effective length range of elastic members around the foot

R2‧‧‧ Effective length range of the inner elastic member

Wb‧‧‧ distance

[Fig. 1] Fig. 1 is a plan view showing the skin contact surface side of the disposable disposable diaper according to the first embodiment of the present invention.

[Fig. 2] Fig. 2 is a cross-sectional view taken along the line X-X in Fig. 1.

The disposable disposable diaper 1 of the first embodiment of the present invention will be described with reference to Figs. 1 and 2 .

In the following description, the same or similar symbols are attached to the same or similar parts. However, it should be noted that the drawings are only intended to indicate that the ratio of each size is different from reality.

Therefore, the specific dimensions, etc., should be judged by the following instructions. Further, the drawings also include portions having different dimensional relationships and ratios from each other.

In the first drawing, a plan view seen from the skin contact surface side of the disposable disposable diaper 1 of the present embodiment is shown. In Fig. 2, a cross-sectional view taken along the line X-X in Fig. 1 is shown.

As shown in Fig. 1, the disposable disposable diaper 1 of the present embodiment has a product longitudinal direction L and a product width direction W which perpendicularly intersect each other. Further, the disposable disposable diaper 1 of the present embodiment has a back side B and a ventral side F in the longitudinal direction L of the product.

As shown in FIGS. 1 and 2, the disposable disposable diaper 1 of the present embodiment includes a top sheet 2A and a lining sheet 2D, and is disposed between the top sheet 2A and the lining sheet 2D. Absorber 2C.

As shown in Fig. 2, in the disposable disposable diaper 1 of the present embodiment, a waterproof non-woven fabric sheet 2B may be provided on the non-skin contact surface side of the lining sheet 2D.

For example, the top sheet 2A is not particularly limited as long as it is a sheet-like material having a liquid permeable structure such as a nonwoven fabric and a woven fabric, a perforated plastic sheet, and a mesh sheet. The fibers constituting these materials may, for example, be polyethylene (PE), single fibers such as polypropylene (PP) and polyethylene terephthalate (PET), and graft polymerization of polyethylene and polypropylene. A composite fiber such as a fiber or a core-sheath structure.

The absorber 2C is an absorbent core having a core wrap and a liquid absorbing material. The absorbent core is a hydrophilic fiber or a superabsorbent polymer. Examples of the hydrophilic fiber include regenerated cellulose such as cellulose, rayon, and rayon rayon such as pulverized pulp or cotton; semi-synthetic cellulose such as acetic acid or triacetic acid; and particulate polymer and fibrous material. The polymer, the thermoplastic hydrophobic chemical fiber, or the thermoplastic hydrophobic chemical fiber to which the hydrophilization treatment is applied may be used singly or in combination. Among these, the crushing paper is used in consideration of the low cost and the ease of forming the absorbent body. The slurry is preferred. It is also possible to use a polymer absorbent in which hydrophilic fibers are mixed.

Further, the absorbent core is covered by the core wrap. For example, the core wrap is a fiber nonwoven fabric or a tissue sheet having a liquid permeability at least on a part of the skin surface abutting surface side, and specifically, a basis weight (Japanese fabric basis weight) can be used. 10 to 30 g/m ² of air passes through the fibrous nonwoven fabric and the spunbonded nonwoven fabric and the SMS nonwoven fabric and the tissue sheet.

For example, the lining sheet 2D is liquid impermeable and is composed of a film that is moisture permeable or non-permeable to moisture.

Here, as shown in Fig. 1, in the disposable disposable diaper 1 of the present embodiment, the absorbent body 2C has a narrow concave shape in the lower femoral field corresponding to the lower portion of the user's femur. Department 2C1.

According to this configuration, when the disposable disposable diaper 1 is installed, the disposable disposable diaper 1 can be attached to the lower portion of the strand which is surrounded by the left and right feet of the user from the abdomen across the back.

In particular, by increasing the area in which the narrowed portion 2C1 is disposed in the ventral side F, it is possible to avoid the situation in which the rigid absorbent body 2C is raised in the lower portion of the user's strand and away from the user's body.

As shown in Fig. 1 and Fig. 2, in the disposable disposable diaper 1 of the present embodiment, the outer side of the product width direction W at the position of the maximum width Wmax1/Wmax2 of the absorbent body 2C is provided. The elastic member 3 around the at least one pair of legs that are stretchable in the longitudinal direction L of the product.

Further, as shown in FIGS. 1 and 2, in this embodiment In the disposable disposable diaper 1 of the example, the outer side of the product width direction W of the elastic member 3 in the product width direction W and the maximum width Wmax1/Wmax2 of the absorbent body 2C are provided on the outer side in the product width direction W. At least one pair of inner elastic members 4 that are stretchable in the longitudinal direction L of the product.

According to this configuration, the inner elastic member 4 is attached to the body of the user, and the excrement can be effectively intercepted to return the excrement toward the side of the absorber 2C. Further, the inner elastic member 4 is contracted so that the absorbent body 2C can continue to adhere to the body of the user.

Therefore, the elastic member 3 around the foot and the inner elastic member 4 are not disposed in the product width direction W and overlap with the absorber 2C.

According to this configuration, the deformation of the absorbent body 2C can be suppressed in the sub-pillar region of the disposable disposable diaper 1 after use.

Specifically, as shown in Fig. 2, in the disposable disposable diaper 1 of the present embodiment, the inner elastic member 4 may be disposed between the lining sheet 2D and the nonwoven fabric sheet 2B.

According to this configuration, since the lining sheet 2D and the top sheet 2A are present between the user's skin surface and the inner elastic member 4, the cushioning property to the user's skin surface can be improved, and the inner elastic member 4 can be relieved. Skin contact.

Further, as shown in Fig. 1, in the disposable disposable diaper 1 of the present embodiment, in the ventral side F, the narrowed portion 2C1 is further in the range R1 which reaches the effective length of the elastic member 3 around the foot. The outer side of the longitudinal direction L of the product.

According to this configuration, when the disposable disposable diaper 1 is installed, it is not hindered by the absorbent body 2C, and the elastic member 3 around the foot can be attached to the groin portion of the user, and the disposable diaper 1 can be used. After the installation, the position of the absorbent body 2C along the groin portion of the user is achieved, so that the user can easily move the foot. As a result, it is possible to effectively prevent leakage of urine from the groin portion of the user.

Further, as shown in Fig. 1, in the disposable disposable diaper 1 of the present embodiment, in the longitudinal direction L of the product, the effective edge rim E1 of the inner elastic member 4 is present in the design. There is a range of the narrow part 2C1.

Further, as shown in Fig. 1, in the disposable disposable diaper 1 of the present embodiment, in the longitudinal direction L of the product, the effective length range R1 of the elastic member 3 around the foot is higher than that of the inner elastic member 4. The effective length range R2 is longer.

According to this configuration, the inner elastic member 4 is provided in order to secure the disposable disposable diaper 1 against the portion of the inter-strand portion of the user, and is not in the effective length range R2 of the inner elastic member 4. When the elastic member 3 around the foot is mounted on the ventral side F and the back side B, the ventral side F and the back side B of the effective length R2 of the inner elastic member 4 can suppress the reduction of the absorbing body C, and leakage due to body fluid can be prevented. And the deviation of the shrinkage of the absorbent body 3.

Here, the effective length range R1 of the elastic member 3 around the foot is a range in which the elastic member 3 is stretched in the longitudinal direction L of the product, and the effective length of the inner elastic member 4 is set. R2 is a range in which the inner elastic member 4 is disposed in a state in which the elastic member 4 is stretchable in the longitudinal direction L of the product.

As shown in Fig. 1, in the disposable disposable diaper 1 of the present embodiment, the maximum width Wmax2 in the back side B is larger than the maximum width Wmax1 in the front side F in the absorbent body 2C. Short is OK.

According to this configuration, urine can be efficiently absorbed from the ventral side F by a wide area.

Further, as shown in Figs. 1 and 2, in the disposable disposable diaper 1 of the present embodiment, the leakage preventing wall 5 may be provided on the outer side in the product width direction W from the absorbent body 2C.

Here, the leakage preventing wall 5 may have a fixing portion 5A that is fixed to the top sheet 2A and a rising portion 5B that is configured to rise from the fixing portion 5A. Here, an elastic member is provided in the free end of the rising portion 5B.

Further, as shown in Fig. 1, the disposable disposable diaper 1 of the present embodiment may constitute the fixing portion 5A of the leakage preventing wall 5 in the front side F and the side of the product width direction W of the absorbent body 2C. The distance Wf of the rim is shorter than the distance Wb between the fixing portion 5A of the leakage preventing wall 5 on the back side and the side edge of the absorbent body 2C in the product width direction W.

According to this configuration, the rising portion 5B of the leakage preventing wall 5 can be more easily raised on the back side B than the front side F, and the rear side B can be enlarged to form the rising portion 5B and the top sheet 2A by the leakage preventing wall. The bag (accommodating space) prevents leakage of soft stools and the like.

And in the disposable disposable diaper 1 of the present embodiment, The stress of the side elastic member 4 may be equal to or greater than the stress of the elastic member 3 around the foot.

According to this configuration, the inner elastic member 4 provided in the field closer to the absorber 2C than the elastic member 3 around the foot can be appropriately fitted along the unevenness of the user's body.

As shown in Fig. 1, in the disposable disposable diaper 1 of the present embodiment, the product of the rising portion 5B of the leakage preventing wall 5 is provided on the outer side in the longitudinal direction L of the product in the range in which the narrow portion 2C1 is provided. Both end edges E2 in the longitudinal direction may be fixed to the top sheet 2A.

According to this configuration, the narrowed portion 2C1 of the absorbent body 2C that is configured to fit the user's body does not overlap, and the rising portion 5B of the leakage preventing wall 5C is fixed to the top sheet 2A. It is difficult to achieve the fall of the leakage preventing wall 5 toward the outer side in the product width direction W.

Further, as shown in Figs. 1 and 2, in the disposable disposable diaper 1 of the present embodiment, the inner elastic member 4 is provided in the product width direction W of the fixing portion 5A of the leakage preventing wall 5. Both sides are also available.

According to this configuration, the fixing portion 5A of the leakage preventing wall 5 can help shrink in the longitudinal direction L of the product, and the rising portion 5B of the leakage preventing wall 5 can be easily erected, and the freedom of the rising portion 5B of the leakage preventing wall 5 can be improved. End and user's body fit.

The present invention has been described above in detail using the above-described embodiments, but it is apparent to those skilled in the art that the present invention is not limited to the embodiments described in the specification. The present invention is without departing from the patent application Modifications and changes may be made in the spirit and scope of the invention. Therefore, the description of the specification is for illustrative purposes only and does not have any limitation of the invention.

[Industrial availability]

A disposable disposable diaper can be provided, and even when the absorbent body is provided with a narrow portion, the desired absorption performance can be exhibited.

Claims (1)

A disposable disposable diaper having an article longitudinal direction and a product width direction perpendicularly intersecting each other, and having an absorbent body disposed between the top sheet and the backing sheet and the top sheet and the lining sheet, wherein: In the longitudinal direction of the product, the back side and the front side are defined, and at least one pair of feet extending around the longitudinal direction of the product are provided on the outer side in the width direction of the product from the position of the maximum width of the absorbent body. The elastic member is provided on the inner side in the product width direction of the elastic member around the pair of feet and at a position wider than the maximum width of the absorbent body, and is provided with at least one stretchable in the longitudinal direction of the product. In the pair of inner elastic members, the absorbent body has a narrow portion, and in the front side, the narrow portion reaches the outer side in the longitudinal direction of the product in a range longer than the effective length of the elastic member around the foot. In the longitudinal direction of the product, the end edge of the ventral side of the inner elastic member that is effectively long is present in the narrow portion Portion of the range, the stress inside the elastic member, the stress around the foot with an elastic member, or more equally.