JP3393117B2 - Disposable diapers - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disposable diaper having improved wearability and fit, and more particularly to a disposable diaper for infants, incontinent persons and adults.

[0002]

2. Description of the Related Art As shown in FIG. 11, a conventional disposable diaper has a liquid-permeable top sheet 2, a liquid-impermeable leak-proof sheet 3, and a diaper body 5 having an absorbent body 4 interposed between these sheets. A fastening tape 6 provided on the back side of the diaper body and a landing tape 7 provided on the abdomen side to which the fastening tape 6 is attached are provided as means for attaching the diaper body 5 to the body. It is provided. Further, as a simple wearing tool for a disposable diaper, there are ones that use a rubber band, and some disposable diapers for infants and children are preformed in a pants-type.

[0003]

However, in the above-mentioned conventional disposable diaper, in order to secure the fit property,
It is necessary to keep the wearing state of the disposable diaper constant between the initial stage and the stage in use, and it is necessary to hold it securely and elastically. However, in the case of infants, especially in the case of high-aged children whose fit is required, since the wearer is not standing still when changing diapers, they cannot be securely worn and become unstable.

Further, in the case of aged children, the diaper change from the lying state to the diaper change from the standing state is more frequent, and it is difficult to attach the diaper with the conventional fastening tape 6 and the wearing state after the wearing is also unsatisfactory. It is stable. As described above, since the initial state of wearing the disposable diaper is unstable, the fit is insufficient, and in older children, the amount of activity is further large, so that the wearing state during use is There is an inconvenience that deformation occurs and the fit property is further deteriorated, resulting in leakage.

In the case of disposable diapers for incontinent persons,
It is difficult for the conventional fastening tape 6 product to be worn while standing on its own, considering that the wearer is elderly. Furthermore, the incontinent person is not always incontinent, and if he / she tries to urinate voluntarily, the fastening tape must be peeled off to remove the disposable diaper. There is the inconvenience of being troublesome. In the case of wearing with a rubber band, the operation of attaching the rubber band to the disposable diaper is relatively troublesome, and since the rubber band is thin, there is a drawback that the wearing stability is poor. The pants-type disposable diaper has a problem that the manufacturing process is complicated and expensive, and it is difficult to remove the diaper during the defecation process, and it is difficult to roll the diaper itself during the defecation process.

[0006] Therefore, the object of the present invention is easy to wear,
Another object of the present invention is to provide an absorbent article which has good wearing stability during use, can ensure a fit property, and is easy and inexpensive to treat during defecation.

[0007]

DISCLOSURE OF THE INVENTION The present invention is a disposable article having a diaper body composed of a liquid-permeable top sheet, a liquid-impermeable leak-proof sheet, and an absorber disposed between these sheets. in diapers, the longitudinal end of the diaper main body, the elastic strip material to cover the periphery waist of the wearer to the barrier sheet side is provided in the ring, the elastic strip body, and the diaper body are configured separately, the both sides of the longitudinal end of the diaper main body is fixed to the upper surface of the barrier sheets, the whole of the elastic strip body and are arranged on the barrier sheet side At the time of use, it is designed to be turned over to the surface sheet side, and the elastic strip is
It consists of a stretchable and water-repellent sheet material and a water-repellent nonwoven fabric compounded on the outside thereof, or a stretchable and water-repellent sheet nonwoven fabric and extends over the entire length of the elastic strip.
By providing a disposable diaper having a contractibility and a mechanical fastener material that is a fastening member that is fastened to the elastic band body is provided at the other end of the diaper body. The above-mentioned object is achieved.

[0008]

When the disposable diaper of the present invention is worn,
Turn over the elastic band located on the leakproof sheet side,
It is arranged on the surface sheet side, and a ring shape is formed on the surface sheet side to cover the waist circumference of the wearer. In this state, after the body is passed through the ring-shaped elastic band, the other end of the diaper body is fixed to the elastic band by the fastening member, or before the body of the wearer is passed through the elastic band. Alternatively, the other end of the diaper body may be fastened to the elastic band member 16 with a fastening member to form a pants type, and then the diaper body may be worn like pants. When exchanging the disposable diaper when urinating, the pants may be removed. In addition, when exchanging during defecation, the portion stopped by the fastening member can be peeled off in a lying state and rolled up toward the butt portion, and then the rolled up portion can be stopped by the elastic band member for disposal.

[0009]

EXAMPLES Examples of the present invention will be described in detail below.
1 is a perspective view of a disposable diaper of an embodiment of the present invention, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIG.
1 is a perspective view showing a method of mounting the disposable diaper shown in FIG. 1, FIG. 4 is a perspective view showing a disposal state of the disposable diaper shown in FIG. 1, and FIG. 5 is an elastic band of the disposable diaper shown in FIG. Sectional view, FIG. 6 is a sectional view of an elastic strip according to another embodiment, FIG. 7 is a perspective view showing a joined state of the elastic strips of the disposable diaper shown in FIG. 1, and FIG. Fig. 9 is a perspective view showing a joined state of Fig. 9, Fig. 9 is a perspective view showing another joined state of the elastic band body, and Fig. 10 is a perspective view of a disposable diaper according to another embodiment.

As shown in FIG. 1, the disposable diaper 10 of the present embodiment is a diaper body in which a liquid-permeable topsheet 11, a liquid-impermeable leakproof sheet 12 and an absorbent body 13 interposed therebetween are arranged. 14 are provided. The leak-proof sheet 1 is provided on the back side portion (one end portion) 15 in the longitudinal direction of the diaper body 14.
A ring-shaped elastic strip 16 is provided on the second side to cover the waist of the wearer, and the elastic strip 16 is the diaper described above.
The main body 14 is configured separately, both side portions of the back side 15 (side flap) 15a, and is fixed to the upper surface of the barrier sheet 12 in 15b, the whole of the elastic strip 16 is the proof It is arranged on the side of the leaking sheet and is turned over to the side of the surface sheet 11 when used. The belly side portion (the other end portion) of the diaper body and the belly side portion of the diaper body 14 and the elastic band are arranged. A mechanical fastener material that is a fastening member 17 that fastens the body 16 is provided.

The diaper body 14 described above is formed with a ventral side portion 18 located on the ventral side of the wearer and the back side portion 15 located on the back side when worn, and the side flap 15a of the back side portion 15 is formed. , 15b to the leakproof sheet 12 and the elastic strip 1
Both ends of the elastic band member 16 are joined and fixed so that 6 forms a ring shape. Further, the abdominal portion 18 is provided with a pair of fastening members 17, 17 on the leak preventive sheet 12 side, so that the abdominal portion 18 is detachably fastened to the elastic strip 16 when worn. It is configured. An elastic member 20 is arranged in the crotch portion 19 located between the abdominal side portion 18 and the back side portion 15, and the crotch gather is formed when the absorbent body 13 is sandwiched and worn. There is.

As shown in FIGS. 2 and 7, the elastic strip 16 is joined in a ring shape to the upper surface of the leak preventive sheet 12 of the back side portion 15, but at both ends 16a, 16b of the elastic strip 16. The outer surface side is folded back and joined and fixed. In this way, since both ends 16a and 16b are folded back and joined and fixed, as shown in FIG. 3 (a), there is no folding back of the joined portion in the use state, and therefore unreasonable force is applied to this portion. Hard to get on, and hard to peel off.

The width of the elastic band 16 is not uniquely determined because it needs to be changed by the subject in consideration of fit when worn, but it is not less than 10 mm or 1/20 to 20% of the total length in the longitudinal direction of the absorbent article. A width of 1/2 is preferable, and more preferably 1 /
Elastic band 1 having a width of 10 to 1/3 when worn
This is because it is preferable that 6 covers at least the upper surface of the absorber. The both ends 16a and 16b of the elastic band 16 are fixed to each other by an adhesive, heat bonding, ultrasonic waves, or the like on the side opposite to the surface that directly contacts the skin during use .

Next, the material and the like of each component of the disposable diaper will be described. The topsheet 11 used in this embodiment is generally widely used as a sanitary material, and includes spunbonding and heatbonding methods using fibers made of polyethylene, polypropylene, polyester, etc., or composite fibers thereof. Or a sheet made by hydroentanglement method, and a hydrophilic treatment for improving the absorbability of body fluid is applied to at least a portion to be installed on the absorbent body surface. It is a film with holes, which is made from polyester, polyester, etc., and is subjected to a hydrophilization treatment to improve the absorbability of body fluids at least on the part installed on the upper surface of the absorber. In consideration of the above, those having 5 to 50 g / m ² are used.

The leak-proof sheet 12 may be a commonly used film made of polyethylene, polypropylene, polyester or the like, or a film obtained by laminating these films on paper, non-woven fabric or the like. In consideration of the above, it is preferable to use a film that is liquid impermeable and has moisture permeability. Further, the amount of moisture permeation and the thickness can be changed according to the target person and application. In general,
A fine inorganic substance is mixed with the above-mentioned general-purpose resin, and fine holes are formed in the film by stretching or elution.
Alternatively, it may be a composite of a moisture permeable film and a non-woven fabric.

The absorber 13 is composed of a web containing pulp, synthetic fibers or the like, with a superabsorbent polymer such as a polyacrylic acid salt or a graft copolymer of starch and acrylic acid being the main absorbent, and is required. The amount may be adjusted according to the amount of absorption. Further, the shape of the absorber 13 may be appropriately selected from a rectangular shape and an hourglass shape according to the target person. The elastic member 20 is made of polyurethane, natural rubber or SBR.
It is formed by previously setting and fixing a thread-shaped or band-shaped film or an elastic body of a foam made of an elastomer such as the above in a stretched state if necessary.

As shown in FIG. 5, the elastic strip 16 is a sheet-like material 16 'such as a stretchable and water-repellent film or a perforated film made of an elastomer such as polyurethane, natural rubber or SBR. And a water-repellent non-woven fabric 16 ″ is formed on at least the outer side of the elastic strip 16 in a state of being joined to the leak-proof sheet, and is stretchable over the entire length of the elastic strip 16.
Have In the composite, the stretchable and water-repellent sheet-like material that has been stretched in a predetermined state in advance and the water-repellent nonwoven fabric are formed by an adhesive material, heat bonding, ultrasonic waves, or the like. Thus, the outer surface is water repellent non-woven 16 "
With this configuration, the side that is folded back during use and comes into contact with the skin of the wearer becomes water repellent, and the wearing feeling is good.

Further, the elastic force of the elastic band 16 needs to be changed depending on the subject as well as the width, and is not uniquely determined, but it is preferably 100 to 400 g / 30 mm when it is doubled, and more preferably 200. ~ 300 g / 30 mm. Further, the elasticity is 1.2 to 3.0 times, preferably 1.5 to 2.0 times. Although not shown, the elastic strip 16 is leak-proof at at least one place apart from the end portions 16a and 16b joined to the leak-proof sheet 12 in order to facilitate transportation during manufacturing. It is temporarily fixed to the seat 12.

The fastening member 17 is a mechanical fastener material such as base Rukuro (TM) type tapes. Stop Chakubuzai 1 7
Is elastic with sufficient smoothness
It is installed on the band 16 .

Next, a method of mounting the disposable diaper of this embodiment will be described. There are two methods for mounting this disposable diaper, as shown in FIG. The first method is the method shown in (a) to (c) of FIG. 3, but first, (a)
As shown in, the elastic band 16 is turned upside down to form a ring shape on the surface sheet 11 side of the back side portion 15 of the diaper body 14. In that state, as shown in (b), both legs are passed through a ring-shaped elastic band, and the ventral side portion 18 is pulled out from the inseam,
As shown in (c), it is a method in which the elastic band member 16 is inserted on the abdominal side and the abdominal portion 18 is stopped by the fastening member 17 to form a pants-like shape.

The second method is the method shown in FIGS. 3 (e) and 3 (f). First, as shown in FIG. 3 (e), the elastic strip 16 is turned upside down so that the diaper body 14 is covered. Dorsal part 1
After forming a ring shape on the surface sheet 11 side of No. 5, the abdominal side portion 18 of the diaper body 14 is put inside the elastic band body 16 and fixed by the fastening member 17 to form a pants type.

Then, as shown in (f), the pants are put on and worn. As described above, the disposable diaper of the present embodiment is easy to wear, and since the elastic diaper 16 holds the diaper body during the wearing, the wearing stability is good and the waist fits well. . As a result, there is no slipping due to activity, etc., and front and back leakage and crotch leakage are prevented. Furthermore, the production of the disposable diaper of the present invention is
Since only the elastic band is attached, conventional equipment can be used, which makes it economical and relatively inexpensive to manufacture, and folding using the elastic band enables easy folding. Becomes

When disposing of the disposable diaper when urinating, the pants may be removed. In addition, when exchanging during defecation, remove the part stopped by the fastening member 17 in the laid state, spread the diaper body 14, clean the buttocks, and wrap the abdominal part 18 for defecation. After being rolled toward the portion 15, the elastic strip 16 is removed from the foot, and the rolled portion is stopped by the elastic strip 16 and discarded as shown in FIG. Further, when the wearer voluntarily excretes, the elastic band member 1 is removed again after the portion fixed by the fastening member 17 is peeled off as in the case of exchanging for defecation.
The fixing member 17 may be used so that the fixing member 17 is inserted in the lower side.

The present invention is not limited to the above-described embodiments, but can be variously modified without departing from the gist of the present invention. For example, the elastic strip 16 may be fixed to either the back side or the abdomen side as long as it is one end in the longitudinal direction of the diaper body. Further, the elastic band member 16 may have a single layer structure as shown in the sectional view of FIG. In this case, a stretchable and water-repellent sheet nonwoven fabric may be used as it is.
Such a nonwoven fabric-like stretchable and water-repellent sheet is made of the above elastomer as a raw material by a spunbond method or a melt blow method, or a water-repellent nonwoven made from the above elastomer as a raw material. It is obtained by a so-called stitch bond method, in which the elastic body is sewn while being stretched. Further, a thread-shaped or band-shaped elastic body made of the above-mentioned elastomer as a raw material may be joined between the water-repellent nonwoven fabrics in a stretched state. The joining means may be an adhesive, heat bonding, ultrasonic waves, or the like, or the fibers may be joined by utilizing the fusion property of the fibers themselves when manufacturing the nonwoven fabric.

When the elastic strip 16 is fixed to the leak-proof sheet, as shown in FIG. 8, both ends of the elastic strip 16 may be fixed as they are without being folded. Furthermore,
If necessary, the elastic band member 16 may be partially cut into a V-shape 21 as shown in FIG. 9 to secure a necessary width of the elastic band member 16 and remove unnecessary portions. As a result, the fit of the wearer's feet can be further enhanced. Further, as a means for improving the leakproofness of the diaper body 14, a three-dimensional leg gather may be installed on the diaper body 14. Furthermore, as shown in FIG. 10, the diaper body 14 may have a waist gather 22 provided on the back side portion 15 to which the elastic band member 16 is joined.

[0026]

EFFECT OF THE INVENTION The disposable diaper of the present invention provides an absorbent article which is easy to wear, has good wearing stability during use, can secure fit, and is easy to be treated during defecation and is inexpensive. Is. In particular, by holding the diaper body with an elastic band, the fit at the waist is good,
In addition, by using the elastic band, there is no slipping off due to activity, etc. As a result, front and back leakage and crotch leakage are prevented, and compared to the conventional pants type, the treatment at the time of defecation is easier and hygienic. Is. Furthermore, since the production of the disposable diaper of the present invention is only to attach the elastic strip, it is possible to use the conventional equipment to be economical and relatively inexpensive to produce, and by using the elastic strip, Folding with good portability is possible.

[Brief description of drawings]

FIG. 1 is a perspective view of a disposable diaper according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a perspective view showing a method of mounting the disposable diaper shown in FIG.

FIG. 4 is a perspective view showing a disposal state of the disposable diaper shown in FIG.

5 is a cross-sectional view of an elastic body of the disposable diaper shown in FIG.

FIG. 6 is a cross-sectional view of an elastic body according to another embodiment.

FIG. 7 is a perspective view showing a joined state of the elastic band members of the disposable diaper shown in FIG. 1.

FIG. 8 is a perspective view showing another joining state of the elastic strips.

FIG. 9 is a perspective view showing another joined state of the elastic strips.

FIG. 10 is a perspective view of a disposable diaper according to another embodiment.

FIG. 11 is a perspective view showing a conventional disposable diaper.

[Explanation of symbols]

10 disposable diapers 11 Surface sheet 12 Leak prevention sheet 13 Absorber 14 diaper body 15 Dorsal part (one end) 16 elastic strip 17 Fastening member

─────────────────────────────────────────────────── --Continued from the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) A61F 13/15-13/84 A61F 5/44

Claims (3)

(57) [Claims] 1. A disposable diaper provided with a diaper body comprising a liquid-permeable topsheet, a liquid-impermeable leak-proof sheet, and an absorbent body arranged between these sheets, wherein the length of the diaper body is long. At one end of the direction, the elastic strip material to cover the periphery waist of the wearer to the barrier sheet side is provided in the ring, the elastic strip body, and the diaper main body is configured separately
Cage, fixed to the upper surface of the barrier sheet in both sides of the longitudinal end of the diaper main body, the whole of the elastic strip member is in said surface sheet side in use and is arranged on the barrier sheet side The elastic strip is composed of a stretchable and water-repellent sheet-like material and a water-repellent nonwoven fabric compounded on the outer side thereof, or is a stretchable and water-repellent sheet nonwoven fabric. Consisting of the elastic strip
A disposable diaper having elasticity over its entire length, and a mechanical fastener material that is a fastening member for fastening to the elastic band body is provided at the other end of the diaper body. . 2. The side flap portions formed at both side edge portions of the diaper body, wherein both end portions of the elastic strip are
The disposable diaper according to claim 1, wherein the disposable diaper is joined and fixed to the leak-proof sheet, and a ring shape is formed by the elastic band member and the diaper body. 3. The disposable diaper according to claim 1, wherein the elastic strip has a water repellent non-woven fabric on the outer side which is to be turned over at the time of use and located on the surface sheet side.