JP3933258B2 - Disposable diapers - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
In the present invention, an absorbent body is interposed between a liquid-permeable top sheet and a liquid-impermeable back sheet, and the top sheet is on the skin contact surface side and passes through the crotch from the abdomen side of the wearer. More particularly, the present invention relates to a separate disposable diaper comprising: an absorbent main body that is mounted so as to extend over the back side; and a mounting band that is formed separately from the absorbent main body and fixes the absorbent main body when the absorbent main body is mounted Relates to a disposable diaper that can be worn by changing the size of the diaper according to the body shape of the wearer and can be used economically.
[0002]
[Prior art and problems to be solved by the invention]
In recent years, an absorbent body is interposed between a liquid-permeable top sheet and a liquid-impermeable back sheet, and the back sheet passes through the crotch from the abdomen of the wearer with the top sheet as the skin contact surface side. Proposed is a separate disposable diaper comprising an absorbent main body that is worn over the side, and a wearing band (abdominal band) that is formed separately from the absorbent main body and fixes the absorbent main body when the absorbent main body is worn (JP-A-8-266571).
Such a disposable diaper is a part of the adhesive tape for attaching and fixing the disposable diaper to the wearer, a peeling member to which the adhesive tape is peelably adhered, a convex member and a concave member of the planar tape. In preparation for this, only the absorption body is replaced and the mounting band is used repeatedly to improve economic efficiency. In addition, since such disposable diapers fasten the absorbent main body and the wearing band at the time of wearing, it is easier to put on the diaper while matching the wearer's body shape compared to the conventional integrated disposable disposable diaper. Fit can be obtained.
[0003]
However, even in such a conventional disposable diaper, a sufficient fit may not be obtained depending on the body shape of the wearer.
[0004]
Accordingly, an object of the present invention is to provide a disposable diaper that can be worn by changing the size of the diaper according to the body shape of the wearer and can be used economically.
[0005]
[Means for Solving the Problems]
In the present invention, an absorbent body is interposed between a liquid-permeable top sheet and a liquid-impermeable back sheet, and the top sheet is on the skin contact surface side and passes through the crotch from the abdomen side of the wearer. In a disposable diaper comprising: an absorbent main body that is mounted so as to extend over the back side; and a mounting band that is formed separately from the absorbent main body and fixes the absorbent main body when the absorbent main body is mounted. At least the non-skin contact surface of the back side portion is made of a non-woven fabric, and the non-skin contact surface of the abdominal side portion is provided with a ventral side attachment portion. on the sides, with a first fastening portion engaged with-than the nonwoven fabric than the convex member surface fastener, releasably be fastened and to the ventral side the fastener part to the wearer side of its ends and a second fastener part, the upper edge of the central portion of the mounting band elastic members waist of fixing that The first fastening portion is in said mounting band, by providing a disposable diaper, characterized in that provided below the elastic member for the waist, in which to achieve the above objects.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the disposable diaper of the present invention will be specifically described with reference to the drawings.
FIG. 1 is a plan view of an embodiment of the disposable diaper of the present invention viewed from the non-skin contact surface side, and FIG. 2 is a plan view of the absorbent main body of FIG. 1 viewed from the non-skin contact surface side. 3 is a plan view of the absorbent main body of the disposable diaper of FIG. 1 viewed from the skin contact surface side, and FIG. 4 is a plan view of the disposable diaper wearing band of FIG.
[0007]
Disposable diaper 1 of this embodiment, as shown in FIG. 1, a and the top sheet 11 absorbent body 13 is interposed between the back sheet of the topsheet 11 and a liquid impermeable liquid-permeable Absorbing body 10 that is mounted on the skin contact surface side from the wearer's abdomen through the crotch to the back side, and is formed separately from the absorbing body 10 and the absorption body 10 is absorbed when the absorbing body 10 is mounted. A mounting band 20 for fixing the main body 10 is provided.
Such a structure is the same as that of the separate disposable diaper of the prior art.
[0008]
Thus, in the disposable diaper 1 of the present embodiment, as shown in FIG. 2, the absorbent body 10 has at least the non-skin contact surface of the back side portion B made of a nonwoven fabric (first nonwoven fabric 14). And a non-skin contact surface of the abdominal side A is provided with a ventral side fixing portion 15. As shown in FIG. 4, the wearing band 20 includes a first fastening portion 21 made of a convex member of a planar fastener on the wearer side surface at the center portion, and on the wearer side surfaces at both ends thereof. A second fastening portion 22 is provided that is detachably secured to the ventral secured portion 14.
[0009]
When this embodiment is explained in full detail, the absorber 13 of the said absorption main body 10 becomes wide as it goes to an edge in the abdominal side part A, as shown in FIG. The shape has a uniform width. The top sheet 11 and the back sheet have a rectangular shape that is vertically longer and wider than the absorbent body 13, and the top sheet 11 and the back sheet are in contact with each side of the absorbent body 13, respectively. The sheet is bonded to the periphery of the absorber 13 and the absorber 13 is sandwiched and fixed between the top sheet 11 and the back sheet.
As the top sheet 11, the back sheet, and the absorber 13, the top sheet 11, the back sheet, and the absorber 13 that are conventionally used can be used without any particular limitation.
[0010]
And the 1st nonwoven fabric 14 is laminated | stacked on the non-skin contact surface side surface (surface on the opposite side to the absorber 13) of the said back surface sheet. Further, the second nonwoven fabric 16 is fixed in a band shape on the non-skin contact surface side of the first nonwoven fabric 14 so as to cover the abdominal side A in the width direction, thereby forming the abdomen side securing portion 15. . Although the above-mentioned ventral part is preferably formed of a non-woven fabric as described above, it may be formed of a knitted fabric other than the non-woven fabric.
Moreover, the peeling part is formed in the non-skin contact edge side of the 1st nonwoven fabric 14 by apply | coating or spraying a peeling agent to the center part of the back side part B, and the disposal tape 17 which has an adhesion part in this peeling part. Is peeled and adhered. This disposal tape 17 is peeled off from the adhesive portion at the time of disposal, and is used to hold the absorbent body 10 in a rounded form.
[0011]
The first nonwoven fabric 14 is fixed to the back sheet by performing adhesive (hot melt), heat sealing, or ultrasonic sealing. As said 1st nonwoven fabric 14, the nonwoven fabric generally marketed can be used, For example, an air through nonwoven fabric, a spun bond nonwoven fabric, a heat embossed nonwoven fabric, and a spunlace nonwoven fabric can be used preferably. In particular, an air-through nonwoven fabric is preferable from the viewpoint of adhesive strength.
A knitted fabric and a non-woven fabric can be used as the fastening portion on the ventral side, and currently known knitted fabrics can be used as the knitted fabric, for example, tricoat knitting, Raschel knitting, stitch-through knitting, etc. Tricoat knitting is particularly preferable. On the other hand, as the nonwoven fabric, a commonly used nonwoven fabric can be used, and an air-through nonwoven fabric is particularly preferable.
The said peeling part can be similarly formed using the release agent similar to the peeling part currently used in order to stick the disposable tape of disposable diaper so that peeling is possible.
As the disposal tape 17, those conventionally used as a disposal tape for disposable diapers can be used without particular limitation.
[0012]
Furthermore, leg gathering elastic members 31 are fixed to both side edges of the absorbent main body 10 in a state of being stretched between the top sheet 11 and the back sheet, and the absorbent main body 31 is contracted by the leg gather elastic member 31. Leg gathers are formed on both side edges of 10.
As said elastic member 31 for leg gathers, what is conventionally used as an elastic member for forming the leg gather of a disposable diaper can be especially used without a restriction | limiting.
[0013]
Further, as shown in FIG. 3, a pair of three-dimensional gather forming members 32 are provided along the side edges of the surface sheet 11 on the skin contact surface side surface (surface opposite to the absorber 13) of the surface sheet 11. It is arranged in a band shape. The three-dimensional gather forming member 32 has an outer side edge fixed to the top sheet 11, and a three-dimensional elastic member 33 is fixed to the inner side edge in a state of being stretched along the inner side edge. The three-dimensional gather forming member 32 stands on the wearer side by the contraction of the three-dimensional gather elastic member 33 so that the three-dimensional gather is formed.
As the three-dimensional gather forming member 32 and the three-dimensional gather elastic member 33, a three-dimensional gather forming member and a three-dimensional gather elastic member which have been conventionally used for forming a three-dimensional gather of a disposable diaper can be used.
[0014]
As shown in FIG. 4, the mounting band 20 is composed of a wide central portion 23 and tapered side portions 24 connected to the left and right of the central portion 23.
The central portion 23 is formed by laminating at least two third nonwoven fabrics, and a waist elastic member 25 is stretched between the layers of the third nonwoven fabric at the upper edge of the central portion 23. The waist gathers are formed by contraction of the elastic member 25 for waist.
As said 3rd nonwoven fabric, conventionally well-known various nonwoven fabrics, such as a spun bond nonwoven fabric, an air through nonwoven fabric, and a spunlace type nonwoven fabric, can be used. Particularly preferred is a spunbond nonwoven fabric having high strength.
As the elastic member for waist, those conventionally used as elastic members for waist can be used without particular limitation.
[0015]
And the convex member of a planar fastener is fixed to the skin contact surface side four places of the said center part 23, and the said 1st fastening part 21 is formed. Each of the first fastening portions 21 has a width W of 1.5 cm in the width direction at the time of wearing and a length L of the edge in the length direction at the time of wearing of 5 cm. Is provided.
As the convex member of the planar fastener forming the first fastening portion, a conventionally known convex member of the planar fastener is used without particular limitation, and a bowl-shaped, mushroom-shaped, bowl-shaped or the like is used. However, it is preferable that the convex member of the planar fastener has an engagement force with the first nonwoven fabric of 5 to 100 cN / 30 mm. When the engaging force between the convex member of the planar fastener of the first fastening portion and the first nonwoven fabric is less than 5 cN / 30 mm, the engagement between the attachment band and the absorption body is not sufficient, and the attachment band and the absorption body are separated. It becomes difficult to integrate, and if it exceeds 100 cN / 30 mm, it is difficult to remove the absorbent main body from the wearing band at the time of replacement of the absorbent main body, which hinders diaper change. In addition, the convex member of the planar fastener preferably has a shearing force with the first nonwoven fabric of 200 cN / cm ² or more. If the engaging force of the convex member of the planar fastener of the first fastening portion and the first nonwoven fabric is less than 100 cN / cm ² , the attachment band and the absorption body are likely to be displaced during attachment.
[0016]
The engaging force is a result of a 180 ° peel test after the surface fastener was brought into surface-engagement engagement with the first nonwoven fabric and then pressed twice against the nonwoven fabric with a load of 1 kg / 30 mm. .
The shearing force is a result of a tensile shearing force test after pressing the planar fastener against the nonwoven fabric with a load of 1 Kg / 30 mm after the surface fastener is brought into surface-engagement with the first nonwoven fabric.
[0017]
The side portion 24 includes a stretchable fabric 26 and a non-stretchable sheet-like fixing piece 27 that is in contact with the skin contact surface side at the free end portion of the stretchable fabric 26. A convex member of a planar fastener is fixed to the skin contact surface side of 27 to form the second fastening portion 22.
[0018]
The stretchable fabric 26 is not particularly limited as long as it can be expanded and contracted. For example, a single elastic body or a composite of an elastic body and a nonwoven fabric or a film is used.
As the fixing piece 27, a commercially available non-woven fabric and film can be used, and a spunbonded non-woven fabric is particularly desirable from the viewpoint of strength.
[0019]
As the convex member of the planar fastener forming the second fastening portion 22, a conventionally known convex member of the planar fastener is used without particular limitation, and a bowl-shaped, mushroom-shaped, bowl-shaped or the like is used. Can do.
[0020]
When the disposable diaper 1 of the present embodiment is mounted, first, the first fastening portion 21 of the mounting band 20 is locked to the first nonwoven fabric 14 on the back side B of the absorbent body 10. At this time, when the wearer's leg circumference is large, the first fastening portion 21 is locked toward the waist of the back side B, and when the leg circumference is small, the crotch part of the back side B is Lock closer to C. And the absorption main body 10 is arrange | positioned from a wearer's back side to an abdominal side, the abdominal side part A is located in a wearer's abdominal side, and the 2nd fastening part of the attachment belt | band | zone 20 to the abdominal side fastening part 15 22 is locked. Thereby, the disposable diaper 1 is formed in a pants shape and is fixedly attached to the wearer.
And when a bodily fluid is absorbed by the absorption main body 10, only the absorption main body 10 is replaced | exchanged and it mounts | wears by the method similar to the above, and the mounting belt | band | zone 20 is used repeatedly.
[0021]
Thus, according to the disposable diaper 1 of the present embodiment, the first fastening portion 21 of the wearing band 20 can be locked at any position on the back side portion B of the absorbent main body 10, so In addition, the position in the length direction in which the first fastening part 21 is locked is determined, and the leg size when formed into the pants mold is adjusted, so that a good fit and wearing feeling can be obtained.
According to the disposable diaper 1 of the present embodiment, since the stretchable fabric 26 is continuously provided in the central portion 23 of the wearing band 20, it is possible to obtain better stretchability around the waist, and to provide better fit. Obtainable.
According to the disposable diaper 1 of this embodiment, since the wearing band 20 is repeatedly used, it is economical.
[0022]
The present invention is not limited to the above-described embodiments, and specific shapes, dimensions, and the like of the respective members can be appropriately changed without departing from the spirit of the present invention.
For example, the stretchable fabric 26 may not be used for the attachment band 20, and the two third nonwoven fabrics in the central portion 23 may be extended as they are.
It is good also as what can form the 2nd fastening part 22 with an adhesive tape, and can adhere this adhesive tape so that peeling can be carried out.
The second nonwoven fabric 16 is not provided on the ventral side A, and the first nonwoven fabric 14 can be used as the ventral-side attachment portion 15 as it is.
The first nonwoven fabric 14 may not be laminated on the entire back sheet, and may be laminated only on the non-skin contact surface of the back side portion B.
[0023]
【The invention's effect】
As described above, according to the disposable diaper of the present invention, the size of the diaper can be appropriately changed according to the body shape of the wearer, and economical use is possible.
[Brief description of the drawings]
FIG. 1 is a plan view of an embodiment of the disposable diaper of the present invention as viewed from the non-skin contact surface side.
2 is a plan view of the absorbent main body of the disposable diaper of FIG. 1 as seen from the non-skin contact surface side.
3 is a plan view of the absorbent main body of the disposable diaper of FIG. 1 as viewed from the skin contact surface side.
4 is a plan view showing a wearing band of the disposable diaper of FIG. 1. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Disposable diaper 10 Absorption main body 11 Top sheet
1 3 Absorbent body 14 First non-woven fabric 15 Ventral secured portion 16 Second non-woven fabric 17 Discarding tape 20 Attaching band 21 First securing portion 22 Second securing portion 23 Central portion 24 Side portion 25 Waist Elastic member 26 elastic fabric 27 fixed piece A ventral side B back side C crotch

Claims (7)

An absorber is interposed between the liquid-permeable top sheet and the liquid-impervious back sheet, and the top sheet is on the skin contact surface side from the wearer's abdomen to the back through the crotch. In a disposable diaper comprising: an absorbent main body that is mounted so as to extend; and a mounting band that is formed separately from the absorbent main body and fixes the absorbent main body when the absorbent main body is mounted.
The absorption main body has at least a non-skin contact surface on the back side made of a non-woven fabric, and a non-skin contact surface on the abdominal side has a ventral side attachment portion,
The mounting band, the wearer side of the central portion, provided with a first fastening portion engaged with-than the nonwoven fabric than the convex member surface fastener, and the ventral to the wearer side of its ends A second fastening part that is detachably fastened to the fastened part ;
A waist elastic member is fixed to the upper edge of the central portion of the mounting band, and the first fastening portion is provided below the waist elastic member in the mounting band. Disposable diapers. The disposable band according to claim 1, wherein the mounting band includes the central part and both side parts constituting the both end parts of the mounting band, and the width of each of the both side parts is narrower than the width of the central part. Homme one. The disposable diaper according to claim 1 or 2, wherein the position of the upper end of the first fastening part is below the position of the upper end of the second fastening part . The wearing band includes the central part and both side parts constituting the both end parts of the wearing band, and each of the both side parts includes a stretchable fabric and a skin contact surface at a free end of the stretchable fabric. A non-stretchable sheet-like fixing piece that is in contact with the side, and a convex member of the surface fastener is fixed to the skin contact surface side of the fixing piece to form the second fastening portion. and one disposable om according to any one of claims 1 to 3 are. A disposal tape is provided on the non-skin contact surface on the back side of the absorbent body, and the disposal tape is covered with the attachment band in a state where the absorption body is fixed with the attachment band. The disposable diaper in any one of Claims 1-4 made | formed to. Four first fastening parts are formed at different positions in the longitudinal direction of the wearing band, and the positions of the lower ends of the two first fastening parts far from both longitudinal ends of the wearing band are: The disposable diaper according to any one of claims 1 to 5, wherein the disposable diaper is located below the positions of the lower ends of the other two first fastening parts close to both ends in the longitudinal direction . Engaging force between the nonwoven fabric and the first fastener part is 5~100cN / 30mm, according to claim 1 shear strength between the nonwoven fabric and the first fastener part is Ru der 200 cN / cm ² or more The disposable diaper as described in any one of 6 .

Images