JP3548248B2 - Disposable diaper covers - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to a disposable diaper cover which can process urination or defecation several times by exchanging a disposable diaper, a urine pad and the like, and which does not require washing.
[0002]
[Prior art]
Currently, pants-type disposable diapers with fastening tape that are commercially available for adults are required to have a performance of absorbing urination about 2 to 3 times. In order to absorb about 500 cc of urine, an absorbent member composed of ground pulp, a water-absorbent resin, tissue paper, or the like is filled with 300 to 500 g / m ^{2 of} pulp and about 30 to 60 g of a water-absorbent resin. However, if the filling amount of the above numerical value is secured, the thickness of the absorbing member becomes 20 mm or more, so that there is a problem that the wearer is inevitably given a rough feeling.
[0003]
In addition, the disposable diaper must be replaced with a new and clean one after each defecation or several urinations, so that a person who needs a disposable diaper consumes 4 to 5 per day. This has not only been economically disadvantageous, but has also been viewed as particularly problematic in terms of saving resources and increasing waste.
[0004]
For this reason, a washable cloth diaper cover which has been conventionally used has been reviewed. The diaper cover is provided with a flat paper diaper having no fastening tape or the like or a smaller urine pad (hereinafter referred to as a diaper cover). In addition, a method of replacing only the flat-type paper diaper after urinating or defecation is used in combination with a flat-type paper diaper). This method has the advantages of eliminating the need to use cloth diapers that need to be washed, always being able to wear new disposable diapers and keeping it clean, and reducing the amount of disposable diapers that are discarded. This is a method that helps to improve waste and reduce the amount of waste.
[0005]
However, the cloth diaper cover used in the above method is not manufactured from the viewpoint of absorbing urine but is made of a material having almost no water absorption, so it is absorbed by a flat-type paper diaper. The urine stool that overflowed and leaked out leaked outside, and sometimes stained clothes or, if sleeping, sheets and futons. Further, since the dirty diaper cover is to be washed and reused, operations such as washing and drying are required, and the caregiver is currently under a heavy burden.
[0006]
[Problems to be solved by the invention]
Thus, the present invention eliminates the economical problems and the problem of increasing the amount of waste caused by using pants-type disposable diapers, and further eliminates the inconvenience of urine and feces leakage caused by the use of a cloth diaper cover. The purpose is to eliminate the hassle.
[0007]
[Means for Solving the Problems]
The present invention, which has achieved the above object, is a disposable diaper cover which stores and uses a disposable diaper inside, wherein the diaper cover absorbs between a liquid-permeable top sheet and a liquid-impermeable back sheet. The gist is that a member is loaded, fastening tapes are disposed on both left and right sides of one end of the diaper cover, and elastic bodies are additionally provided on the trunk equivalent part and the leg equivalent part.
[0008]
The absorbent member pulp, which contains a water-absorbent resin and heat-fusible fibers, the pulp content of 100 to 400 g / ^{m 2,} the water-absorbing resin content of 10 to 80 g / ^{m 2,} heat fusible fibers It is preferable that the content is 3 to 30% by weight in the absorbing member, and the thickness is formed to be 15 mm or less so as not to give the wearer uncomfortable feeling.
[0009]
The liquid permeable surface sheet of the disposable diaper cover of the present invention is a non-woven fabric or a plastic film having an opening, and the inverted diaper having an inverted conical opening for preventing liquid from returning from the absorbing member. This is a preferred embodiment for imparting water absorbency to the cover. In particular, the porosity in the central region in the longitudinal direction of the topsheet is 20 to 60%, the porosity in the end regions other than the central region is 10 to 40%, and the central region in the longitudinal direction in the topsheet. It is also preferable that the hole diameter of the hole is 0.3 to 1.5 mm, and the hole diameter of the hole in the end region other than the center region is 0.1 to 0.6 mm.
[0010]
In the disposable diaper cover of the present invention, a pocket member for removably storing the flat-type disposable diaper may be provided at a back side and / or an abdominal end of the diaper cover. Further, the fastening tape is formed of a hook member of an interengagement type, and a loop member detachably engaged with the hook member is provided on the back sheet on the end side of the diaper cover where the fastening tape is not provided. This allows the disposable cover to be formed into a pants-type as many times as possible.
[0011]
Further, it is preferable that a pair of three-dimensional gathers is provided on the left and right sides along the diaper cover longitudinal direction on the upper surface of the topsheet, since urine and feces leakage from the crotch can be reliably prevented. When the back sheet is formed of a laminate of a plastic film and a non-woven fabric, an excellent sensation and appearance can be obtained, and a diaper cover without urine / feces leakage can be provided.
[0012]
[Action]
The disposable diaper cover of the present invention has the greatest feature in that the diaper cover gives absorption performance and is made into an inexpensive disposable type, and its basic configuration is a disposable diaper that stores and uses a disposable diaper inside. A diaper cover, wherein the diaper cover has an absorbing member mounted between a liquid-permeable top sheet and a liquid-impermeable back sheet, and fastening tapes are provided on both left and right sides of one end of the diaper cover. In addition, an elastic body is attached to the trunk portion and the leg portion.
[0013]
The diaper cover of the present invention adopts this configuration, so that even if urine and feces overflow from the flat-type paper diaper or urine pad used together, the urine spills out of the diaper cover due to the presence of the absorbing member inside the diaper cover. There is no stool leakage, and urine stool leakage from the waist and inseam thighs can be reliably prevented by the torso gather and the leg gather. If the diaper cover is not contaminated, it is only necessary to replace the flat paper diaper, urine pad, and the like, which is more economical as well as conserving resources and reducing dust than conventional disposable diapers. If the diaper cover is severely soiled, it can be discarded as it is without the need for washing or the like, which has the advantage of reducing the burden on the wearer or caregiver.
[0014]
In the absorbent member of the diaper cover of the present invention, the pulp content is 100 to 400 g / m ² and the water-absorbing resin content is 10 to 80 g / m ² , so that it is thinner and lighter than conventional disposable diapers. It can be formed to improve wearing feeling and achieve resource saving. Also, by mixing the heat-fusible fiber in the absorbing member in an amount of 3 to 30% by weight, the shape retention of the absorbing member can be ensured.
[0015]
On the other hand, by using a nonwoven fabric or a plastic film having an opening for the topsheet, urine, loose stool, and the like leaking from the disposed flat paper diaper or the like can be captured without leaking to the outside. Further, by forming the inverted conical hole, the liquid such as urine or loose stool from the absorbing member is reliably prevented from returning to the skin surface side. Flat type paper disposed inside the cover by setting the porosity in the central region in the length direction of the topsheet to 20 to 60% and the porosity in the end region other than the central region to 10 to 40%. Urine and the like leaking from the diaper and the like can be captured in the central region, and the captured urine and the like can be prevented from oozing out of the end region again due to the lying posture of the wearer. In particular, when the opening diameter of the hole in the central region in the longitudinal direction of the topsheet is 0.3 to 1.5 mm, and the opening diameter of the hole in the end region other than the central region is 0.1 to 0.6 mm, the above-mentioned effect is obtained. Can be reliably achieved.
[0016]
Further, in the disposable diaper cover of the present invention, a pocket member for detachably storing the flat-type disposable diaper may be provided at a back side and / or a ventral end of the diaper cover. Further, the flat paper diaper can be securely held inside the diaper cover so that the paper diaper can be arranged so as not to be displaced by the movement of the wearer. The fastening tape is formed of an interengaging hook member, and a loop member detachably engaged with the hook member is disposed on the back sheet on the other end side where the fastening tape of the diaper cover is not disposed. With such a configuration, the disposable cover can be formed and released as a pants-type as many times as possible, and the work of replacing the inner flat diaper can be easily performed. Further, it is preferable that a pair of three-dimensional gathers is provided on the left and right sides along the diaper cover longitudinal direction on the upper surface of the topsheet, since urine and feces leakage from the crotch can be reliably prevented. When the back sheet is formed of a laminate of a plastic film and a non-woven fabric, an excellent sensation and appearance can be obtained, and a diaper cover without urine / feces leakage can be provided.
[0017]
【Example】
FIG. 1 is a partially cutaway explanatory view showing a typical embodiment of a diaper cover according to the present invention. The diaper cover 1 is mainly composed of three layers of an hourglass-shaped back sheet 2, an absorbing member 3 and a top sheet 4. The absorbing member 3 is formed smaller than the top sheet 4 and the back sheet 2. The periphery is adhered to the top sheet 4 and the back sheet 2. The absorbing member 3 is made of pulverized pulp, highly water-absorbing resin, heat-fusible fibers, thin paper, or the like.
[0018]
The pulp content in the absorbing member 3 is preferably 100 to 400 g / m ² , and the water absorbing resin content is preferably 10 to 80 g / m ² . Within this range, it has a water absorbing capacity of about 200 cc, and can absorb urine that could not be completely absorbed by the flat paper diaper 20 housed inside the cover 1, thereby preventing leakage to the outside. As long as urination can be constantly captured by the flat paper diaper, the cover can be used as it is regardless of how many times urination occurs. In addition, since the absorbing member can be formed thin and lightweight, the wearing feeling does not decrease even when the flat paper diaper 20 is combined inside. It is also effective in saving resources. However, if the amount of pulp / water-absorbing resin is less than the above range, urine and feces leaked from the inner diaper cannot be absorbed, which is not preferable. It is preferable that the thickness of the absorbing member 3 be 15 mm or less, whereby the wearer can be worn without giving the wearer a feeling of discomfort and without giving any discomfort.
[0019]
By mixing the heat-fusible fiber with the absorbing member 3 in an amount of 3 to 30% by weight, the shape retention of the absorbing member can be ensured. This is because the amount of pulp in the absorbing member 3 is smaller than that of a conventional diaper, and the absorbing member may be broken during use. In this way, the ground pulp fibers and the heat-fusible fibers are three-dimensionally bonded to each other to enhance shape retention. As the heat-fusible fiber, conventionally known polyamide-based, acrylic-based, polyolefin-based, polyester-based, etc. alone or a side-by-side or core-sheath composite heat-fusible fiber may be used. Special shaped fibers such as crimps may be used.
[0020]
The topsheet 4 is made of a liquid-permeable non-woven fabric made of polyethylene, polypropylene, polyester-based fibers or composite fibers, or a resin made of such a resin and having a hole 41 as shown in FIG. It is preferable to configure the liquid plastic film. It is recommended that the opening diameter of the opening 41 be in the range of 0.1 to 1.5 mm. By setting the opening ratio of the opening 41 to be in the range of 10 to 60%, urine can be discharged with a high probability. Can be absorbed. It is more preferable that the opening 41 be formed in the inverted cone shape shown in FIG. 2A because urine once absorbed by the absorbing member 3 does not flow back to the upper surface side of the topsheet 4. Reference numeral 31 shown in FIGS. 2A and 2B is thin paper.
[0021]
Around the absorbing member 3, the back sheet 2 and the top sheet 4 are bonded by means such as a hot-melt adhesive or heat bonding (thermal bonding) so that urine absorbed by the absorbing member 3 does not leak outside. Have been. The back sheet 2 is a known polyethylene, polypropylene, or polyester plastic film, or a plastic film in which fine holes are provided in these films so as to be liquid-impermeable and vapor-permeable to reduce stuffiness. Etc. can be used. If a laminate in which these films and the nonwoven fabric are laminated so that the nonwoven fabric is disposed on the outermost layer of the diaper cover is used as the back sheet, a diaper cover having excellent texture and appearance can be obtained.
[0022]
In the diaper cover 1 of FIG. 1, elastic members 6 and 6 extending between the back sheet 2 and the top sheet 4 are provided in a region corresponding to the trunk at the longitudinal end and a region corresponding to the legs on both left and right sides of the diaper cover. , And 5,5 are bonded (intermittent bonding or full length bonding) to form a torso gather and a leg gather, respectively, which elastically surround the wearer's torso and leg base. As the elastic member, a thread-like or band-like rubber made of natural rubber, NR, IR, SBR, polyurethane or the like is used.
[0023]
It is preferable to dispose at least one pair of fastening tapes 8 on the left and right sides on one end side (upper side in FIG. 1) of the diaper cover 1. Although two pairs are shown in the example of FIG. 1, if two pairs or more are used, the effect of preventing displacement of the ends of the diaper cover which is fastened in a pants-type is increased. A joining portion 81 is formed on the fastening tape 8 except for the knob 82, and the joining portion 81 is either a member to which an adhesive is applied or a complementary joining type member using mechanical entanglement. It is preferable to use a hook-and-loop fastener (trade name: Velcro or Velcro) that does not reduce the bonding strength even after performing a plurality of bonding and removing operations. The hook-and-loop fastener is composed of a hook member provided with a large number of hook-shaped hooks (used for the joint portion 81) and a loop member having a fiber or a loop for hooking the tip of the hook. Is disposed on the upper surface of the back sheet 2 on the other end side (the lower side in FIG. 1) (the portion surrounded by a two-dot chain line). In the illustrated example, the hook member 83 is divided into left and right parts, but may be a single loop member connected in a plane from the left end to the right end.
[0024]
A configuration in which a pair of left and right three-dimensional gathers 9 and 9 are additionally provided on the upper surface of the topsheet 4 along the longitudinal direction of the diaper cover 1 may be employed. The band-shaped three-dimensional gathers 9 are formed of a liquid-impermeable sheet (a nonwoven fabric subjected to a water-repellent treatment, a nonwoven fabric laminated with a plastic film, a vapor-permeable fine-pored plastic film, or the like). The elastic body 93 is adhered to the other end 92 in an extended state, and the other end 92 is raised so as to be orthogonal to the top sheet 4 and adheres around the leg when worn. And prevent urine leakage.
[0025]
It is preferable that the longitudinal end of the diaper cover 1 of the present invention has a pocket portion for detachably storing a flat-type disposable diaper on the back side and / or the abdomen side. The figure shows an example in which pockets 11 and 11 are provided at both ends on the diaper cover top sheet 4. The pocket member 11 is disposed in parallel with the body elastic members 6, 6, and its end side edge 11 b and left and right side portions 11 c, 11 c are adhered on the topsheet 4, and the central side edge 11 a of the diaper cover 1 Are not bonded to form pockets P, P opened to the center. The pockets P, P are used for storing and holding the ends 20A, 20B of the flat-type disposable diaper 20 described below. This pocket member can be formed by extending the back sheet or the top sheet in the length direction and folding it back at the end of the diaper cover in the length direction, or can be formed by a separate member, and securely stores the flat diaper. To make it possible, an elastic member may be provided on the side of the central portion side edge 11a of the pocket member.
[0026]
A flat disposable diaper 20 shown on the upper side of FIG. 1 generally includes a liquid-impermeable sheet 21 (formed of a plastic film or the like) and an absorbent body 22 (crushed pulp, highly water-absorbent resin, tissue paper, or the like). ) And a liquid-permeable sheet 23 (made of a nonwoven fabric made of synthetic fiber), and the absorber 22 is formed in a smaller area than the liquid-permeable sheet 23 and the non-liquid-permeable sheet 21. The liquid-permeable sheet 23 and the liquid-impermeable sheet 21 are joined to the periphery 24 of the absorber 22 by an adhesive or heat welding.
[0027]
The flat-type paper diaper 20 is fixed to the inside of the diaper cover 1 by the pocket members 11 to absorb urine, loose stool, and the like. After urination or defecation, the flat diaper 20 is removed from the diaper cover 1 and replaced with a new one. Even if urine cannot be absorbed by the inner diaper 20 or leaks out of the diaper 20 for some reason, the urine can be captured by the absorbing member 3 of the diaper cover 1 of the present invention. The pocket member 11 can prevent urine from leaking out of the diaper cover 1.
[0028]
FIG. 3 is an exploded explanatory view showing another embodiment of the disposable diaper cover 1 of the present invention. The topsheet 4 is formed jointly with a part of the three-dimensional gathers 9, 9 adhered on both right and left sides thereof. 93 is an elastic member. The topsheet 4 is formed of a perforated plastic film, is disposed along the center in the length direction of the diaper cover, and the absorbent member 3 covered with the thin paper 31 is disposed below the topsheet.
[0029]
An opening 41A having an opening diameter of 0.3 to 1.5 mm is formed in the central region A in the longitudinal direction of the topsheet 4, and the opening ratio of this region is 20 to 60%. In the other end regions B, B, an opening 41B of 0.1 to 0.6 mm is formed, and the opening ratio of this region is 10 to 40%. With this configuration, urine leaking from the flat-type diaper disposed inside the diaper cover 1 is reliably captured in the central region A, and the absorber 3 is once disposed in the end regions corresponding to the abdomen and the back of the wearer. Can be prevented from oozing back through the topsheet 4 again.
[0030]
The end area B is preferably in the range of 1/3 to 1/4 of the entire length L of the diaper cover 1, whereby the above-mentioned effect is reliably achieved. Since the material forming the three-dimensional gathers 9 is a non-woven fabric subjected to a water-repellent treatment, a plastic film laminated non-woven fabric, a plastic film with a vapor-permeable fine aperture, or the like, the material outside the three-dimensional gathers 9 (the left and right sides of the diaper cover 1) There is no danger of urine leaking out to the part), and the absorbing member 3 has a rectangular shape and exhibits sufficient absorbing performance.
[0031]
Further, it is recommended that the back sheet 2 has a laminated structure of a liquid-impermeable plastic film 28 (or a liquid-impermeable and vapor-permeable fine-opening plastic film) and a nonwoven fabric 29. As a result, the outermost layer of the diaper cover 1 is formed of the nonwoven fabric 29, so that the diaper cover has a beautiful appearance and an excellent feel.
[0032]
【The invention's effect】
Since the present invention is configured as described above, it is only necessary to replace the flat disposable diaper (including the urine pad) that has absorbed urine and stool after excretion. Compared to disposable diapers, it can be considerably reduced. This greatly reduces the amount of garbage to be discarded, and is economical due to the use of inexpensive flat paper diapers, which also contributes to resource conservation.
[0033]
Since the diaper cover of the present invention is provided with an absorbing member, even when urine and feces overflows from the flat paper diaper or urine pad used in combination, urine and feces do not leak out of the diaper cover, Furthermore, leakage of urine and feces from the waist and the thighs of the inseam can be reliably prevented by the trunk gathers and the leg gathers.
[0034]
Furthermore, since the diaper cover itself can be used for several times of defecation and urination, the consumption of one diaper per day is enough, and it can be discarded as it is. And the burden on the user or caregiver can be reduced.
[Brief description of the drawings]
FIG. 1 is a development explanatory view showing a typical embodiment of a diaper cover according to the present invention.
FIGS. 2A and 2B are explanatory views showing examples of the cross-sectional shape of diaper cover-1.
FIG. 3 is an exploded view showing another embodiment of the diaper cover according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Diaper cover 2 Back sheet 3 Absorbing member 4 Top sheet 5 Elastic member 6 Elastic member 8 Fastening tape 9 Three-dimensional gather 11 Pocket member 20 Flat paper diaper

Claims (9)

An absorbing member is loaded between the liquid-permeable top sheet and the liquid-impermeable back sheet, fastening tapes are disposed on both left and right sides of one end of the diaper cover, and a trunk portion and a leg portion are provided. An elastic body is attached to the disposable diaper cover that stores and uses a flat type disposable diaper inside,
The topsheet is a nonwoven fabric or a plastic film having openings, and in the central region in the longitudinal direction of the topsheet, openings having an opening diameter of 0.3 to 1.5 mm are formed at an opening ratio of 20 to 60%. A disposable diaper cover characterized in that, in an end region other than the central region, openings having an opening diameter of 0.1 to 0.6 mm are formed at an opening ratio of 10 to 40% . The absorbent member pulp, which contains a water-absorbent resin and heat-fusible fibers, 100 to 400 g / m ² pulp content, the water-absorbing resin content of 10 to 80 g / m ^2, heat fusible fibers The disposable diaper cover according to claim 1, wherein the content is 3 to 30% by weight in the absorbent member. 3. The disposable diaper cover according to claim 1, wherein the thickness of the absorbing member is 15 mm or less. The disposable diaper cover according to any one of claims 1 to 3, wherein the opening has an inverted conical shape for preventing liquid from returning from the absorbing member . The disposable diaper cover according to any one of claims 1 to 4 , wherein a pocket member for removably storing the flat-type disposable diaper is disposed at a back side and / or an abdominal end of the diaper cover. The fastening tape is formed of an interengaging hook member, and a loop member detachably engaged with the hook member is provided on the back sheet on the end side of the diaper cover where the fastening tape is not provided. The disposable diaper cover according to claim 1 . The disposable diaper cover according to any one of claims 1 to 6, wherein at least two pairs of fastening tapes are provided along the longitudinal direction of the diaper cover. The disposable diaper cover according to any one of claims 1 to 7, wherein a pair of three-dimensional gathers is provided on left and right sides along a longitudinal direction of the diaper cover on an upper surface of the topsheet . The disposable diaper cover according to any one of claims 1 to 8, wherein the back sheet is formed of a laminate of a plastic film and a nonwoven fabric .

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