JP2571355Y2 - Disposable diapers - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION INDUSTRIAL APPLICATION The present invention relates to disposable diapers, particularly for infants, adults,
The present invention relates to a pants-type disposable diaper having an abdominal part and a back part joined to each other, which is used for incontinent persons.

[Conventional technology]

Generally, in a disposable diaper, the main body is composed of a liquid-permeable top sheet, a liquid-impermeable back sheet, and one absorbent body interposed between these two sheets. An elastic member is provided on the main body to enhance fit to the wearer and prevent leakage of excrement, so as to form a gather.

In this type of disposable diaper, Japanese Patent Application Laid-Open No. 1-162807 discloses a structure in which a cuff is provided on a main body of the disposable diaper so as to cover an upper surface of the absorber for the purpose of improving the storage characteristics of excrement. It has been disclosed. The cuff is formed by a stretchable elastic member to stand up to form a barrier for preventing leakage and to fit the wearer's body.

[Problems to be solved by the invention]

However, even in the formation of the gathers by stretching the elastic member, or in the configuration in which the cuffs are provided, the rigidity of the absorber limits the formation of the gathers or the movement of the cuffs. Cannot work effectively.

As described above, there is a problem that the formation of the gathers and the cuffs cannot work effectively, and the leakage of excrement cannot be reliably prevented.

Furthermore, in the place where the diaper body hits the joints of the wearer, especially in the inguinal region of the inseam, the diaper body is bent to cause constriction.Conventionally, since the constricted part has an absorber, the rigidity of the absorbent body causes There is a problem that the constriction cannot be formed sufficiently and the fitting property at the crotch cannot be obtained.

Further, in the pants-type diaper in which the abdominal part and the back part are joined, the crotch part must be formed narrow, and there is a problem that the absorbing power is reduced.

Accordingly, it is an object of the present invention to provide a disposable diaper having an excellent fit and capable of reliably preventing excrement leakage.

[Means for solving the problem]

The present invention has a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber positioned between these two sheets, and an abdominal part positioned on the wearer's abdomen when worn. ,
Pants forming a back side located on the back side and a crotch located on the crotch, and the waist opening and a pair of leg openings are formed by joining the abdominal side and the back side. In the disposable diaper of the type, the absorber is the abdominal part,
A main absorber extending over the crotch portion and the back side, and a pair of auxiliary absorbers provided separately from the main absorber and disposed on at least the crotch on both sides along the extending direction of the main absorber; The main absorber has an hourglass shape in which a substantially central portion is constricted in the crotch portion, and the auxiliary absorber is formed in a substantially arc shape along the shape of the leg portion. A first elastic member is arranged between the body and the auxiliary absorber, and a second elastic member is provided between the side edges along the longitudinal direction and the auxiliary absorber in the crotch portion. Prepared,
The object has been achieved by providing a disposable diaper wherein the second elastic member is stretched in an arc shape along the edge of the leg portion to form gathers around the legs.

[Action]

When the disposable diaper of the present invention is worn, the body is bent at a portion corresponding to the groin at the crotch of the body.

At this time, since the main absorber and the auxiliary absorber are configured separately, there is no absorber at this bent portion, and it is easy to adapt to the groin without being affected by the rigidity of the absorber. Folded. Therefore, the diaper is securely fitted to the wearer and leakage of excrement is prevented.

In addition, the elastic member stretched between the main absorber and the auxiliary absorber further improves the fit.

In addition, since the auxiliary absorber is located on the leg side in the crotch part of the wearer, even if there is excrement leaked from the main absorber to the leg side, it is absorbed by the auxiliary absorber and the excrement Prevent leaks reliably.

In the pants-type diaper, since the cross-sectional shape of the diaper becomes an inverted U-shape with respect to the groin of the wearer, the fit,
Even if the crotch portion is formed to be narrower, the overall absorbing power does not decrease.

〔Example〕

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The disposable diaper 1 according to the embodiment of the present invention, as shown in FIGS. 1 to 3, corresponds to the liquid-permeable top sheet 2 forming the side that comes into contact with the wearer's skin, and corresponds to the top sheet 2. A liquid-impermeable back sheet 3 and a main body 5 interposed between the top sheet 2 and the back sheet 3 and provided with absorbers 4a and 4b for absorbing excrement such as urine are provided.

The main body 5 is formed in a vertically elongated substantially quadrangular shape, and leg portions 6 that are concave in an arc shape are formed on both sides in the width direction. In addition, the main body 5 is formed with an abdominal part 7 located on the abdomen of the wearer and a dorsal part 8 located on the dorsal side when worn. , And the back part 8 is located upward. A crotch 9 is formed between the abdomen 7 and the back 8. The crotch portion 9 is a portion including the leg portion 6 described above.

Waist flaps 11 at both ends of the main body 5 in the longitudinal direction,
An elastic member 13 forming a gather is stretched over 12.

The abdomen 7 and the back 8 are provided with side flaps 14 and 15 extending from the main body 5 in the width direction, respectively. The side flaps 14 and 15 are formed of a stretchable elastic member, and the elastic force allows the main body 5 to fit the waist of the wearer.

In the main body 5, the absorbers 4a and 4b are a main absorber 4a arranged substantially at the center of the main body 5, and a pair of auxiliary absorbers 4b arranged on both sides of the main absorber 4a.

The main absorbent body 4a extends from the abdominal part 7 of the main body 5 to the crotch part 9 and the back part 8, and has an hourglass shape in which the center of the crotch part 9 is substantially constricted.

The auxiliary absorber 4b is provided at the crotch 9 of the main body 5 by the main absorber.
It is formed with an interval between it and 4a. The auxiliary absorber 4b is formed in a substantially arc shape having a predetermined width along the shape of the leg portion 6. Thus, the main absorber 4a and the auxiliary absorber 4b
The structure in which the absorber is not interposed between the first and second members facilitates bending and the like in this portion, and improves the fit of the groin when worn.

Further, between the main absorber 4a and the auxiliary absorber 4b, a first elastic member 16 is stretched to a position short of the waist flaps 11 and 12, so that adhesion to the groin when worn is improved. ing.

Also, between the auxiliary absorber 4b and the edge of the leg portion 6, a second elastic member 17 is stretched in an arc shape along the edge of the leg portion to form a gather around the leg. ing.

The top sheet 2 in the main body 5 of the present embodiment is preferably a liquid-permeable sheet that allows excretion to pass through the absorbers 4a and 4b and has a feeling close to that of underwear. For example, a woven fabric, a nonwoven fabric, a porous film and the like are preferable. Also, a method of applying a hydrophobic compound such as a silicone oil agent or paraffin wax to the peripheral portion of the top sheet 2 or a method of applying a hydrophilic compound such as an alkyl phosphate ester in advance and washing the peripheral portion with warm water are used. By performing water treatment, it is possible to prevent leakage due to bleeding of urine and the like in the peripheral portion.

Further, the back sheet 3 used in the present embodiment is a liquid-impermeable sheet having a moisture-permeable property that allows a vapor to be stretched by adding a filler to a thermoplastic resin, or a sheet having a feeling similar to underwear, such as a film. And a nonwoven fabric or a composite material of a film and a woven fabric.

As the absorbers 4a and 4b, those using a fibrillated pulp as a main material and a polymer water-absorbing polymer in combination are preferable.
A heat-treated mixture of a thermoplastic resin, cellulose fibers, and a high-molecular-weight water-absorbing polymer is preferred. The location of the high-molecular-weight water-absorbing polymer may be any of the upper layer, the middle layer, and the lower layer, and may be a mixture with pulp. The high-molecular water-absorbing polymer has a holding performance capable of absorbing and holding a liquid 20 times or more its own weight, and is preferably in the form of particles having a gelling property. Starch-acrylic acid (salt) graft copolymer, saponified starch-acrylonitrile copolymer, cross-linked sodium carboxymethyl cellulose,
Acrylic acid (salt) polymers are preferred. The shape is preferably an hourglass that matches the body shape of the wearer, but may be rectangular.

The elastic members 13, 16, 17 can be expanded and contracted in at least one direction, and specifically, those known in the industry such as thread rubber, flat rubber, film type rubber, or tape-like foamed polyurethane are used. The joining of the elastic members 13, 16, 17 and the main body 5 is performed when the elastic members 13, 16, 17 are in an extended state by a method such as ultrasonic welding, heat welding, or bonding with an adhesive.

Next, the operation of the above-described embodiment will be described with reference to FIGS.

In the unfolded state of FIG. 1, the side flaps 14,
The edges of the fifteen are welded to form a joint 19 to form a pants-type having a waist opening 21 and a pair of left and right leg openings 22 as shown in FIG.

In the wearing state, the main absorber 4a is located over the abdomen, crotch, and back of the wearer, and the auxiliary absorber 4b is located inside the leg at the crotch.

As a result, excrement is mainly absorbed by the main absorber 4a, but excrement leaked from the main absorber 4a is
It is captured by 4b, and the excrement is prevented from leaking.

In addition, since a portion where the absorber does not exist between the main absorber 4a and the auxiliary absorber 4b is located at the position with respect to the groin 24 of the wearer, it is easy to bend at this portion, and as in the related art, It is not affected by rigidity.
Therefore, the disposable diaper 1 of the present embodiment has the
And excellent fit characteristics can be obtained.

Further, in the groin 23, the elastic member 16 urges the fold between the main absorber 4a and the auxiliary absorber 4b toward the inside of the crotch corresponding to the groin line 24. Therefore, the fit to the wearer is further improved, and leakage of excrement is reliably prevented.

Further, the elastic member 17 forms a so-called leg gather around the wearer's leg, and prevents leakage of excrement from this part.

The present invention is not limited to the above-described embodiment,
Various modifications can be made without departing from the spirit of the present invention.

For example, the present invention is not limited to the configuration in which the side flaps 14 and 15 are provided separately from the main body 5, and as shown in FIG.
Topsheet 2 and backsheet 3 that make up the body 5 of 24
And the side flap may be provided integrally. In this case, the elastic member 25 is arranged on a portion of the main body 5 corresponding to the waist flap and the side flap.

Further, in the disposable diaper according to this modification, slits 26 are formed between the abdominal part 7 and the crotch part 9 and between the back part 8 and the crotch part 9, so that the wearer's waist and legs Are held separately from each other. By holding such a waist and legs separately, the movement of the main absorber 4a and the auxiliary absorber 4b can be independently performed, and each absorber 4a, 4b can reliably follow the movement of the wearer. Further, it is possible to further improve the fit and prevent leakage of excrement from the disposable diaper.

[Effect of the invention]

ADVANTAGE OF THE INVENTION According to the disposable diaper of this invention, it is excellent in fitting property and the leakage of excrement can be prevented reliably.

[Brief description of the drawings]

FIG. 1 is a development view of the disposable diaper of the present embodiment, FIG. 2 is a perspective view showing a wearing state of the disposable diaper shown in FIG.
FIG. 3 is a sectional view of the disposable diaper shown in FIG. 2, and FIG. 4 is a development view of the disposable diaper according to a modification of the embodiment of the present invention. 2; top sheet, 3; back sheet 4a; main absorber, 4b; auxiliary absorber 5; main body, 16; first elastic member

Claims (3)

(57) [Scope of request for utility model registration] 1. An abdominal portion which has a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber located between these two sheets, and which is located on the wearer's abdomen when worn. When,
Pants forming a back side located on the back side and a crotch located on the crotch, and the waist opening and a pair of leg openings are formed by joining the abdominal side and the back side. In the disposable diaper of the type, the absorber is provided with the main absorber extending over the abdominal part, the crotch part and the back part, and both sides along the extending direction of the main absorber, provided separately from the main absorber. It comprises a pair of auxiliary absorbers arranged at least in the crotch part, the main absorber, in the crotch part, presents an hourglass shape with a substantially central part constricted, the auxiliary absorber is a leg part The first elastic member is disposed between the main absorber and the auxiliary absorber, and the first elastic member is disposed along the longitudinal direction of the crotch portion. A second elastic member is provided between both side edges and the auxiliary absorber, and the second elastic portion is provided. A disposable diaper in which a material is stretched in an arc along the edge of the leg portion to form gathers around the legs. 2. The disposable diaper according to claim 1, wherein the first and second elastic members are adhered to a back sheet. 3. A slit is formed on both sides along the longitudinal direction of the diaper, between the abdominal part and the crotch part, and between the dorsal part and the crotch part. The disposable diaper according to any one of the above items (1) and (2).