JP2000140006A - Disposable diaper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disposable diaper easy to wear. SOLUTION: In a disposable diaper 1 which includes a liquid permeable top sheep 2, a liquid impermeable back sheet 3 and a liquid holding absorbing body 4 interposed between both the sheets 2 and 3 and is folded in a specified shape in packaging, an impact resilient members 10a and 10b are arranged at a bendable part in packaging.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disposable diaper that can be easily worn.

[0002]

2. Description of the Related Art In general, disposable diapers are roughly classified into a deployment type and a pants type. In any type of disposable diaper, in the packaged state, the package is folded into a predetermined shape in order to make the package compact and easy to handle and to reduce the occupied space. Further, in these disposable diapers, an elastic body for improving the fit to the body is arranged in an extended state, so that the diaper is in a state of being easily contracted.

[0003] However, the disposable diaper in such a folded state or in a state of being easily contracted has a so-called folded or wrinkled portion in its bent portion or the like. Even when the folded diaper is opened to the wearing shape, when the user releases the hand, the diaper naturally returns to the shape close to the original folded shape due to the restoring force due to the folding or the like, and it may be difficult to attach the diaper.

[0004] Accordingly, an object of the present invention is to provide a disposable diaper that can be easily worn.

[0005]

Means for Solving the Problems The present inventors have found that the above object can be attained by disposing a member for urging a force in a direction in which the diaper is mounted in a specific portion of the diaper. did.

That is, the present invention comprises a liquid-permeable topsheet, a liquid-impermeable backsheet, and a liquid-retentive absorber interposed between the two sheets, and is folded into a predetermined shape in a packaged state. The above object has been achieved by providing a disposable diaper in which a member having bending rebound resilience is arranged at least in a portion to be bent in the above-mentioned packaged state.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a disposable diaper according to the present invention will be described based on preferred embodiments with reference to the drawings.

FIG. 1 is a partially broken plan view of a disposable diaper according to a first embodiment of the present invention, as viewed from a back sheet side. The disposable diaper 1 is an expandable diaper, and has a liquid-permeable top sheet 2, a liquid-impermeable back sheet 3, and a liquid-retentive absorber 4 interposed between the sheets 2,3. are doing. The absorber 4 is formed in a curved hourglass shape in a region corresponding to the crotch region of the diaper 1, and the top sheet 2 and the back sheet 3 are also formed of the absorber 4
The area corresponding to the crotch area of the diaper 1 is curved in accordance with the shape of the diaper 1. The absorber 4 is sandwiched and fixed between the top sheet 2 and the back sheet 3.
As a result, the disposable diaper 1 is formed with an abdominal part A located on the abdomen of the wearer, a back part B located on the dorsal side, and a crotch C located on the wearer's crotch when worn. .

Back and abdominal waist portions 5 and 5 ′ formed by a top sheet 2 and a back sheet 3 extending outward from front, rear, left and right edges of the absorber 4, and a pair of leg portions 6. 6, a plurality of elastic members 7 for fitting the waist portions 5, 5 'and the leg portions 6, 6 to the wearer's body when the diaper 1 is worn include the top sheet 2 and the back sheet. 3 fixedly provided.

A pair of fasteners 8, 8 are disposed on both left and right sides in the width direction of the waist portion 5 in the back side portion B. The fastening device 8 secures the abdominal portion A and the back portion B by fastening to a to-be-attached device (not shown) arranged on the back sheet of the abdominal portion A when the diaper is worn. They are fixed to each other.

When the disposable diaper 1 is packaged, first, as shown in FIG. 2A, the disposable diaper 1 is folded in three in the width direction toward the top sheet 2 at the positions of the folding curves M1 and M2 along the longitudinal direction of the diaper. Thus, the shape shown in FIG. Next, at the positions of the fold curves T1 and T2 along the width direction of the diaper, the diaper is folded three times in the longitudinal direction toward the top sheet 2 side, and in the packaged state, has a folded shape shown in FIG.

Thus, in the disposable diaper 1 of the present embodiment, a portion that is folded in the above-mentioned packaged state,
That is, the diaper 1 is positioned at the positions of the folding curves M1 and M2 and the folding curves T1 and T2 so as to intersect these folding curves.
(Hereinafter, this member is simply referred to as an elastic member). In the present embodiment, as shown in FIG. 1, the longitudinal elastic members 10a are arranged so as to intersect the fold curves T1 and T2.
Are arranged, and the width direction elastic members 10b, 10b are arranged so as to intersect the folding curves M1, M2. That is, the elastic members are arranged in the longitudinal direction and the width direction of the diaper 1. The longitudinal elastic members 10a are band-shaped, and are disposed one at a position of the center line in the width direction of the diaper 1 along the diaper longitudinal direction. On the other hand, the width direction elastic member 10
b is also a band-shaped member, and is disposed one at a time on the abdominal part A and the back part B of the diaper 1 along the width direction of the diaper 1. In addition, these elastic members 10
Both a and 10b are disposed between the backsheet 3 and the absorber 4 in a substantially non-stretched state. Such an elastic member 1
By disposing the diaper 1 in a folded state in the packaged state by disposing the diaper 1 in a folded state in the diaper 1 in the packaged state, the bent portion of the diaper 1 (in the present embodiment, The folding curves M1, M2, T1, and T2) correspond to the elastic members 10a,
The diaper 1 is naturally urged outward (ie, on the backsheet side) by the restoring force due to the bending rebound resilience of 10b, so that the diaper 1 naturally expands to a flat or close state, and does not return inward (ie, on the topsheet side). Become. As a result, even if the user releases his / her hand from the diaper 1, the deployed state is maintained, and the diaper 1 is extremely easily mounted.

Examples of the material constituting the elastic member include foams such as urethane foam and polyolefin foam;
Examples thereof include polyolefin-based elastomers, metallocene low-density polyethylene, thermoplastic elastomers, and various rubbers such as natural rubber and synthetic rubber.

From the viewpoint of obtaining a sufficient bending rebound resilience when the diaper 1 is deployed and maintaining the folded state of the diaper 1 in the packaged state, the elastic member has a bending rigidity value that is equal to that of the elastic member. In the position, it is preferable to exceed the value of the bending rigidity of all the members except for the elastic member in the bent portion of the diaper 1.

The arrangement of the elastic member in the present embodiment is not limited to the above-described embodiment. For example, the elastic member may be arranged only in the longitudinal direction or the width direction of the diaper 1, and FIG.
To (g). FIG.
In (a), one strip-shaped elastic member is disposed along the longitudinal direction of the diaper at a position inside the left and right leg portions, and the width direction of the diaper is located at the positions of the abdomen and the back. The two strip-shaped elastic members are arranged along each line. In FIG. 3 (b), one band-shaped elastic member is disposed along the longitudinal direction of the diaper at the position of the widthwise center line in the crotch portion of the diaper, and the V-shaped branch branches off from both ends of the elastic member. Are disposed at the positions of the abdomen and the back, respectively. In FIG. 3 (c), two strip-shaped elastic members are arranged at diagonal positions of the diaper so as to form an X-shape. In FIG. 3D, the belt-shaped elastic members are arranged in a lattice shape (net shape). FIG. 3E shows an example in which the belt-like elastic members are arranged in a curved shape. In FIG. 3F, the elastic member is arranged in all regions except the peripheral edge 3 ′ of the back sheet 3. In this case, the elastic member may be attached on the back sheet 3 via an adhesive, or may be formed by melting and laminating the resin constituting the elastic member on the back sheet. FIG. 3G shows an example in which the back sheet 3 itself is made of an elastic member. In any of these cases, the elastic member is disposed at a portion that can be bent in a diaper packaging state.

Next, a second embodiment of the present invention will be described with reference to FIG. In the second embodiment, only points different from the above-described first embodiment will be described, and as for the points that are not particularly described, the detailed description of the first embodiment will be applied as appropriate. Also, in FIG.
The same members as those in FIG. 3 are denoted by the same reference numerals.

The disposable diaper 1 of the present embodiment is a pants-type disposable diaper, and the both side edges of the abdominal part and the back part of the deployable disposable diaper of the first embodiment are joined and fixed. It has a form in which a waist opening 11 and a pair of leg openings 12, 12 are formed. When the disposable diaper 1 of the present embodiment is packed, as shown in FIG. 4 (a), the left and right side edges of the diaper 1 are bent, so that the abdominal part A and the back part B simply adhere to each other. 4 (a), or folded in the longitudinal direction of the diaper from the packaged state shown in FIG. )).

Thus, in the disposable diaper 1 of the present embodiment, the elastic member having a sufficient bending resilience enough to sufficiently expand the inside of the diaper 1 is provided at a portion to be bent in the above-mentioned packaged state. It is arranged in a substantially non-extended state. For example, in the packaging state shown in FIG. 4A, the band-shaped elastic member is disposed at the left and right side edges of the diaper 1 so as to intersect with the side edges of the diaper (to be parallel to the waist opening 11). 10 and 10 are provided, respectively. In the package state shown in FIG. 4B, the band-shaped elastic members 10, 10 are arranged at the same positions as those in FIG. A band-shaped elastic member 10 'is disposed so as to intersect the folding curve folded in half. By disposing such elastic members 10 and 10 ′, when the disposable diaper 1 in the packaged state shown in FIG. 4A is taken out of the package and the waist opening 11 is opened, the diaper 1 is opened.
4 (a) are urged in the direction indicated by the arrow in FIG. 4 (a) by the restoring force due to the bending resilience of the elastic members 10 and 10, so that the waist opening 11 is formed as shown in FIG. 4 (a '). It expands and its area becomes large and its state is maintained. In addition, the leg openings 12, 12 are also expanded accordingly.

On the other hand, when the disposable diaper 1 in the packaged state shown in FIG. 4 (b) is taken out of the package, the elastically resilient member 10 'bends from the folded state into two in the longitudinal direction. Return to the state before the folding (this state corresponds to the state shown in FIG. 4A), and further, as in the case shown in FIGS. 4A and 4A, the waist opening 11 and the leg opening The portions 12, 12 are expanded and the area thereof is increased (see FIG. 4 (b ')).

4 (a) and FIG. 4 (b), the disposable diaper 1 taken out of the packaging package has the waist opening 11 and the leg openings 12, 12, which are widened. Since that state is maintained,
Its mounting becomes extremely easy.

The disposable diaper of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the present invention. For example, in the above-described first and second embodiments, the elastic member is disposed between the back sheet 3 and the absorber 4, but the elastic member may be replaced with another position, for example, the top sheet 2 It may be arranged between the absorber and the absorber 4 or may be arranged in the absorber 4. FIG.
In the embodiment shown in (a) and (b), the elastic members 10 and 10 are arranged on the left and right sides of the diaper, respectively. Instead, the elastic members 10 and 10 extend around the entire diaper including the both sides. A member may be provided. In this case, the waist opening further widens. In addition, in the embodiment shown in FIGS. 4A and 4B, in addition to or instead of disposing the elastic member at the position shown in the same figure, as shown in FIG. , 12 may be provided, and the elastic member 10 may be provided along the longitudinal direction of the diaper at the position of the crotch of the diaper. In particular, by arranging the elastic member along the leg opening, liquid leakage from the leg opening can be effectively prevented. Further, in the embodiment shown in FIG.
Although the elastic member 10 'is disposed on the back side B, the elastic member 10' may be disposed on the ventral side A instead, or may be disposed on both the ventral side A and the rear side B. May be.

[0022]

According to the present invention, a disposable diaper that can be easily mounted is provided.

[Brief description of the drawings]

FIG. 1 is a partially broken plan view of a disposable diaper according to a first embodiment of the present invention as viewed from a back sheet side.

FIG. 2 is a diagram showing a packaging state of the disposable diaper shown in FIG.

FIG. 3 is a schematic view showing an arrangement of an elastic member.

FIG. 4 is a schematic view showing a state in which a waist opening of a disposable diaper according to a second embodiment of the present invention is expanding.

FIG. 5 is a schematic view (corresponding to FIG. 4) showing another aspect of the arrangement of the elastic members in the disposable diaper according to the second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Disposable diaper 2 Top sheet 3 Back sheet 4 Absorber 10, 10 ', 10a, 10b Elastic member

Claims (4)

[Claims] 1. A disposable diaper comprising a liquid-permeable top sheet, a liquid-impermeable back sheet, and a liquid-retentive absorber interposed between the two sheets, and folded into a predetermined shape in a packaged state. A disposable diaper in which a member having bending rebound resilience is arranged at least in a portion to be bent in the above-mentioned packaged state. 2. The disposable diaper according to claim 1, wherein said member having bending resilience is disposed between said back sheet and said absorber. 3. The disposable diaper according to claim 1, wherein the member having bending rebound resilience is a band-shaped member arranged in a longitudinal direction and / or a width direction of the diaper. 4. The disposable diaper according to claim 1, wherein the member having bending rebound resilience is arranged in a substantially non-stretched state.