JP2011010705A - Absorbent article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively prevents the skin from being hurt while using a diaper (while wearing and when exchanging a diaper).SOLUTION: There is provided an absorbent article including an absorbent body 10 whose inner surface is made of nonwoven fabric, a fixing portion 20 made of a hook tape of mechanical fastener or an adhesive layer which is arranged at a middle part in the width direction of an outer surface of an abdominal portion 10F of the absorbent body 10, and a covering sheet 30 which covers the whole fixing portion 20 and is fixed to the fixing portion 20 in a peelable fashion. When wearing the absorbent article, both sides of a back portion 10B of the absorbent body 10 is fixed on the fixing portion 20 located on the outer surface of the abdominal portion 10F of the absorbent body 10. The whole fixing portion 20 is then covered with the covering sheet 30.

Description

  The present invention relates to a disposable diaper suitable for use in infants, particularly premature infants and low birth weight infants, in medical facilities such as hospitals.

  In general, neonates with a birth weight of 2,500 g or less are called low birth weight infants, neonates with a weight of 1,500 g or less are called extremely low birth weight infants, and neonates with a weight of 1,000 g or less are called very low birth weight infants Due to the short period of time in the hospital, there is no resistance in various aspects and the skin is weak, so the child is raised in an incubator in the neonatal intensive care unit (NICU). Several proposals for such disposable diapers for low birth weight infants have been made, but with the same material and structure as ordinary tape-type disposable diapers (see, for example, Patent Documents 1 and 2) like other newborns, The current situation is simply using a smaller size.

JP 2006-136702 A Japanese Patent Laid-Open No. 2005-287871 JP 2009-82484 A

However, in low birth weight infants, the stratum corneum is extremely thin and the skin is weak, so that the stratum corneum may be peeled off only by friction with the diaper, and bacteria may invade from that part and cause troubles such as inflammation.
In addition, low birth weight infants often wear disposable diapers in their incubators, but they often wear treatment and monitoring devices such as infusions on their bodies, The cord is fixed by attaching a medical adhesive tape directly to the skin. However, in the case of a low birth weight infant, even if it is adhesive tape glue, the thin stratum corneum will be peeled off when the tape is peeled off. Although it is practiced to apply a release agent and apply an adhesive tape for this measure, it has not been able to completely suppress the exfoliation of the stratum corneum. Therefore, skin trouble prevention when using these tubes is also a problem.
Then, the main subject of this invention is to prevent effectively the damage of the skin at the time of using a diaper (during mounting | wearing and at the time of replacement | exchange).

The present invention that has solved the above problems is as follows.
<Invention of Claim 1>
An absorbent body having a ventral portion and a dorsal portion;
A fixing portion made of a hook tape or a pressure-sensitive adhesive layer of a mechanical fastener, provided in the width direction intermediate portion on the outer surface of the abdomen side of the absorbent main body,
The entire fixing portion can be covered, and a covering sheet that is fixed to the fixing portion so as to be peelable, and the entire inner surface that protrudes outward in the width direction on both side portions of the back side portion of the absorbent body is formed of a nonwoven fabric. A flap portion,
At the time of mounting, the flap portion was fixed to the fixing portion of the outer surface of the abdominal side of the absorption body, and the entire fixing portion was covered with the covering sheet from above.
A disposable diaper characterized by that.

(Function and effect)
In this way, by providing a fixing portion on the outer surface of the abdomen side of the absorbent main body and forming the entire inner surface with a nonwoven fabric without providing the fixing portions on the inner surfaces of both sides of the absorbent main body, the adhesive layer or A member having a high possibility of damaging the skin, such as a hook tape, is difficult to contact the skin. In addition, since the fixing portion is covered with the covering sheet even during mounting, it is possible to effectively prevent the skin from being damaged by the fixing portion. Furthermore, since the covering sheet can be fixed to the fixing portion so as to be peeled off, a tube or a cord (hereinafter also referred to as a tube) is placed on the fixing portion, and the covering sheet is covered so as to straddle it. By fixing the covering sheet to the fixing part, the covering sheet can be used in place of the adhesive tape for fixing the tube or the like. In this case, the tube or the like can be easily removed from the diaper by removing the covering sheet when changing the diaper. Therefore, it is not necessary to apply the adhesive tape directly to the skin as in the prior art. These advantages make it possible to effectively prevent skin damage when using a diaper (during wearing and during replacement).

<Invention of Claim 2>
The disposable diaper of Claim 1 whose dynamic friction coefficient of the said coating sheet is 0.85 or more.

(Function and effect)
It is preferable that the covering sheet has such a dynamic friction coefficient because a tube for treatment or the like can be reliably held without slipping. In addition, the dynamic friction coefficient in this invention is measured by the test based on JISK7125 by Shimadzu Corporation autograph AG-X500N.

<Invention of Claim 3>
The disposable diaper according to claim 1 or 2, wherein the cover sheet is provided with one or more pairs of parallel slits through which tubes or cords are inserted.

(Function and effect)
If such a pair of parallel slits is provided, the tube or the like can be constrained to the surface of the covering sheet by passing the tube or the like through the slit in the order of the other slit.

<Invention of Claim 4>
The disposable diaper according to claim 3, wherein a portion of the covering sheet that has at least a slit and has a dimension capable of covering the fixing portion is separable from the diaper.

(Function and effect)
When a tube or the like is fixed by a slit, the tube or the like can be pulled out when changing the diaper. However, the operation becomes complicated and an excessive burden may be placed on the wearer. On the other hand, when a portion having a slit and having a dimension capable of covering the fixed portion is separable from the diaper, a tube or the like is passed through the slit of the covering sheet when changing the diaper. As it is, the covering sheet can be separated from the used diaper together with the tube or the like, and can be directly attached to the fixing part of the new diaper, so that the diaper replacement and the fixing operation such as the tube can be simplified.

<Invention of Claim 5>
The disposable diaper according to claim 4, wherein the covering sheet is provided with a perforation connecting the pair of parallel slits.

(Function and effect)
When a tube or the like is fixed by a slit, the tube or the like can be pulled out when changing the diaper. However, the operation becomes complicated and an excessive burden may be placed on the wearer. On the other hand, if the perforation as described above is provided, the tube or the like can be easily detached from the covering sheet by separating the perforation.

<Invention of Claim 6>
The disposable diaper according to claim 3, wherein the covering sheet can cover the entire fixing portion in an entire range of 0 to 360 degrees with respect to the fixing portion.

(Function and effect)
It is preferable that the dimensions and shapes of the covering sheet and the fixing portion satisfy this condition, so that the entire fixing portion can be covered even if the direction of the covering sheet is changed according to the direction of the tube or the like.

<Invention of Claim 7>
The said fixing | fixed part is a hook tape of a mechanical fastener, and the said coating sheet is a laminated film which laminated | stacked the nonwoven fabric, the nonwoven fabric, and the resin film, or woven fabric of any one of Claims 1-6. Disposable diapers.

(Function and effect)
The fixing part of the present invention is preferably a hook tape in that the fixing force does not drop even if it is repeatedly peeled. In that case, the covering sheet is preferably a material having a surface composed of such a fiber assembly layer. Since the hook tape is a hard material, it is easy to damage the skin of the wearer. However, in the present invention, since the double protective means of the attachment position and the covering sheet are provided, the possibility of damaging the skin is much higher than before. It will be low.

  As described above, according to the present invention, it is possible to effectively prevent the skin from being damaged when the diaper is used (during wearing and during replacement).

It is a top view which shows the inner surface side of the expansion | deployment state of the disposable diaper which concerns on this invention. It is a top view which shows the outer surface side of the expansion | deployment state of the disposable diaper which concerns on this invention. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is a perspective view which shows the state in the middle of mounting | wearing. It is a perspective view which shows a mounting state. It is a front view which shows the outer surface of a modification. It is a perspective view which shows the mounting state of a modification. It is a top view which shows various modifications. It is a top view which shows various modifications.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
1 to 6 show a disposable diaper 1 according to the present invention. This disposable diaper 1 has a back side portion (a portion on the rear side from the center in the front-rear direction) 10B and an abdominal side portion (a portion on the front side from the center in the front-rear direction) 10F, and an absorbent main body 10 whose entire inner surface is formed of a nonwoven fabric. The fixing part 20 made of a hook tape or an adhesive layer of a mechanical fastener provided at the intermediate part in the width direction on the outer surface of the ventral part 10F of the absorption body 10 can be covered with the whole fixing part 20, and The covering sheet 30 that is fixed to the fixing portion 20 so as to be peelable is a basic configuration.

  When mounting, as shown in FIG. 5, after fixing both sides of the back portion 10B of the absorbent main body to the fixing portion 20 on the outer surface of the ventral portion 10F of the absorbent main body, as shown in FIG. The entire fixing part 20 is covered with the covering sheet 30. Therefore, a member that is highly likely to damage the skin, such as an adhesive layer and a hook tape during mounting and replacement, is less likely to come into contact with the skin. Moreover, since the fixing | fixed part 20 is covered with the coating sheet 30 also during mounting | wearing, the damage | wound of the skin by the fixing | fixed part 20 can be prevented effectively. Furthermore, since the covering sheet 30 can be fixed to the fixing portion 20 in a peelable manner, as shown in FIG. By covering and fixing the covering sheet 30 to the fixing portion 20 on both sides of the tube 40 or the like, the covering sheet 30 can be used instead of the adhesive tape for fixing the tube or the like 40. In this case, the tube 40 or the like can be easily removed from the diaper by removing the covering sheet 30 when changing the diaper.

  The absorbent main body can be designed as appropriate, but in the illustrated example, as can be seen from the cross section of FIG. 3, the liquid permeable top sheet 2 located on the skin side and the liquid impermeable back sheet 3 located on the outer surface side. And the absorber 4 interposed between them, the top sheet 2 and the back sheet 3 are joined to each other at the peripheral edge 5, and the absorber 4 is accommodated in a space surrounded by this joined portion. ing. The joining method is not particularly limited, but it is preferable to join with hot-melt adhesives 5b and 4b because the joining portion is hardened by heat sealing or ultrasonic sealing.

  In addition, an exterior sheet 12 made of a nonwoven fabric is provided on the outer surface of the back sheet 3. The outer surface of the exterior sheet is provided with a fixing means such as a target tape for fastening such as a general tape-type disposable diaper, an adhesive material for preventing slippage such as a sanitary napkin, and a release paper covering the same. Not.

As materials for these parts, known materials can be appropriately used. For example, as the surface sheet 2, in addition to various non-woven fabrics having a basis weight of about 15 to 35 g / m ² , a perforated film having a large number of holes can be used. Antioxidants that suppress oxidative degradation, skin care ingredients such as animal and vegetable oils and fats and moisturizers such as glycerin fatty acid esters that retain skin moisture and soften the skin can be contained. The nonwoven fabric is not particularly limited, such as air-through, point bond, and spun bond. However, when the skin care component is applied to the top sheet 2 at the raw material stage (raw cotton), a short fiber nonwoven fabric is preferable, and the skin care component is applied on the product production line. If processed, a spunbonded nonwoven fabric with high surface smoothness is preferred. Moreover, although a hydrophobic thing may be used as a nonwoven fabric, the nonwoven fabric which has hydrophilic property, and especially the nonwoven fabric containing a hydrophilic natural fiber is suitable at the point which is kind to skin.

As the back sheet 3, a non-breathable film or a breathable porous film made of a polyethylene film or the like can be used. As the exterior sheet, various nonwoven fabrics having a basis weight of about 10 to 40 g / m ² , particularly laminated nonwoven fabrics such as an SMS nonwoven fabric and an SMMS nonwoven fabric can be suitably used from the viewpoint of achieving both strength and flexibility.

The exterior sheet 12 is preferably a nonwoven fabric, but is not limited thereto. The type of the nonwoven fabric is not particularly limited, and as the material fiber, for example, synthetic fibers such as polyethylene or polypropylene, synthetic fibers such as polyester or polyamide, recycled fibers such as rayon or cupra, and natural fibers such as cotton are used. As a processing method, a spunlace method, a spunbond method, a thermal bond method, an air-through method, a needle punch method, or the like can be used. However, a long-fiber nonwoven fabric such as a spunbond nonwoven fabric, an SMS nonwoven fabric, or an SMMS nonwoven fabric is preferable in that both the touch and strength can be achieved. In addition to using a single nonwoven fabric, a plurality of nonwoven fabrics can be used. In the latter case, the nonwoven fabrics 12 are preferably bonded to each other with a hot melt adhesive or the like. When using a nonwoven fabric, the fabric weight is preferably 10 to 50 g / m ² , particularly 15 to 30 g / m ² .

As the absorbent body 4, it is possible to use a laminate of pulp fibers, an aggregate of filaments such as cellulose acetate, or a nonwoven fabric, and a mixture obtained by mixing and fixing a superabsorbent polymer as necessary. . The absorber 4 is preferably formed by an airlaid method in order to reduce the thickness. The fiber basis weight in the absorbent body 4 is preferably about 80 to 150 g / m ² , and the polymer basis weight is preferably about 90 to 160 g. As the superabsorbent polymer used for the absorber 4, an antibacterial polymer is preferable. The absorbent body 4 has a shape such as a rectangle or an hourglass, and can be packaged with a liquid-permeable sheet such as thin paper as necessary.

  Moreover, in the absorption main body 10 of the illustrated form, the elastic elastic member 6 extends in the front-rear direction (vertical direction) between the peripheral edge 2e of the topsheet 2 and the peripheral edge 3e of the backsheet 3 on both sides in the width direction. Each is fixed in state. The elastic elastic member 6 is fixed by a hot melt adhesive that joins the peripheral edge 2e of the top sheet 2 and the peripheral edge 2e of the back sheet 3. The elastic elastic member 6 is preferably an elongated member such as rubber thread as in the illustrated example, but a sheet-like or net-like member can be used. The thread rubber can be used regardless of whether it is a synthetic rubber or a natural rubber, and the thickness is preferably 470 dtex or more (in the case of a synthetic rubber, the natural rubber is preferably the same level), and the length of the rubber thread is along the front-rear direction. It is preferably fixed in a stretched state of 120 to 250%. When such an elastic elastic member 6 is provided, both sides of the absorbent body 10 in the width direction contract to fit around the legs. In addition, since the shrinkage | contraction of the elastic elastic member 6 may become an excessive irritation | stimulation and the skin trouble may be induced for the low birth weight infants with weak skin, you may abbreviate | omit the elastic elastic member 6. FIG.

  The absorbent body 10 can have an appropriate shape, but in the illustrated example, the rectangular body is basically cut in a curved shape so that both side edges in the width direction extend around the legs, and the waist side portion of the back side portion 10B. Flap portions 11 projecting outward in the width direction are formed on both side portions of the, and a region including the flap portion 11 is a portion fixed to the fixing portion 20. The flap portion 11 can be formed by extending at least one corresponding portion of the top sheet 2, the back sheet 3, and the exterior sheet 12 to the outside in the width direction from both sides in the front-rear direction, but in the illustrated example, the exterior sheet 12 is formed. It is formed by extending only.

The dimensions of the absorbent body 10 can be, for example, about 10 to 300 mm in length 10L and about 50 to 150 mm in width 10W. The thickness of the absorbent body 10 having the absorber 4 is preferably, for example, a thickness To (initial thickness) of 2 to 5 mm, particularly 3 to 4 mm at a pressure of 0.5 g / cm ² , and a maximum pressure (here 50 g). / Cm ² ), the thickness Tm (absolute thickness) is preferably 0.5 to 3 mm, particularly preferably 1 to 2 mm. Moreover, it is preferable that the bending rigidity in the front-back direction of the absorption main body 10 is 1-25 cN / 50 mm. Within this range, the bulge and warpage of the article described later can be easily achieved. Note that To and Tm are measured by a compression test using a KES-FB3-AUTO-A automated compression tester based on KES (Kawabata's Evaluation System for Fabrics). Measurements between steel plates with circular plane of compression area 2 cm ^2, the sample was compressed from 0 gf / cm ² to a maximum compressive load 50 gf / cm ^2, carried out between undo. The initial thickness To is the thickness of the sample at a pressure of 0.5 gf / cm ² . The absolute thickness Tm is the thickness of the sample at a pressure of 50 gf / cm ² . The bending stiffness (rigidity) is measured by the following method in accordance with JIS K 7171 (Plastic—Bending stiffness test method). For the measurement, a tensilon tester (curvature radius R1 = 5.0 ± 0.1 mm at the tip of the indenter, curvature radius R2 = 5.0 ± 0.2 mm at the tip of the support plate) is used, and the portion where the absorber 4 exists Measure the bending stiffness in the front-rear direction of the diaper. The test piece is prepared by removing the elastic elastic member that affects the measurement from the diaper and cutting it into a rectangle having a diaper longitudinal direction of 80 mm and a diaper width direction of 50 mm. 50 mm in the unit of the flexural rigidity value is the length of the short side of the test piece, and is the width of the test piece bent with the indenter at the time of the test. On the pair of support plates each having a tip portion having an arcuate cross-section, the interval between the tips (upper ends) of both tip portions being 50 mm, arranged in parallel with each other and the height positions of both tip portions being aligned, The test piece is placed so that its longitudinal direction is directed in a direction perpendicular to each plate, and the tip of the indenter is arranged so as to slightly touch the test piece. A load-deflection curve is obtained by lowering the indenter under conditions of a load cell of 5 kg (range 196 cN) and a speed of 30 mm / min. Let the maximum value of the obtained bending stress be a bending rigidity value (cN / 50 mm).

  On the other hand, although the fixing | fixed part 20 can be provided with a hook tape or an adhesive layer, a hook tape is preferable at the point by which a fixing force does not fall even if it peels repeatedly. A hook tape (male material) of a mechanical fastener (surface fastener) is provided with a number of hook-like protrusions such as a mushroom shape and a letter shape on the surface of a sheet base material made of synthetic resin. The hook-shaped protrusions are detachably fixed to the nonwoven fabric by being entangled with the nonwoven fabric fibers. As the hook tape, it is more preferable to use a soft type male material softer than a normal one. For example, a male material formed from a resin in which polypropylene and polyethylene are mixed is flexible and suitable, and among them, a material having a higher ratio of polyethylene is more preferable. The shape of the male material is preferably a shape close to a circle without corners, such as a chamfered rectangle, rather than a square with corners.

  The fixing portion 20 can be provided at a plurality of locations in the width direction as long as it is an intermediate portion in the width direction on the outer surface of the ventral portion 10F. Is preferred. From the same viewpoint, it is preferable that the waist side edge of the fixing portion 20 is located on the crotch side by about 10 to 35 mm from the waist edge of the absorbent body 10. In particular, when the fixing portion 20 is a hook tape, the fixing portion 20 is within the range of the absorber (that is, the periphery of the fixing portion 20 is inside the periphery of the absorber) so that the hardness thereof is not easily transmitted to the wearer. Preferably they are arranged.

  In addition to this position, no fixing means such as a hook tape or an adhesive layer is provided, and the entire inner surface of the absorbent body 10 is composed of a nonwoven fabric. No longer hurt your skin. In the illustrated embodiment, the top sheet is provided with a width that does not reach both side portions of the absorbent body 10, and as a result, both sides of the back side portion 10 </ b> B, that is, the portion fixed to the fixing portion 20 is the surface of the exterior sheet 12. Is exposed. Therefore, in this case, both sides on the back side of the exterior sheet 12, and in the illustrated embodiment, the exposed portion of the exterior sheet 12 in the flap portion 11 is mainly fixed to the fixing portion 20. Of course, since both side portions of the back portion 10B are portions fixed to the fixing portion 20, a non-woven fabric having excellent fixing force of the fixing portion 20 and having high strength is separately attached to the surface, or raised on the non-woven fabric constituting the surface. It can also be processed. Moreover, the surface sheet 2 can be extended to both sides in the width direction of the absorbent main body, and the both sides of the back portion 10B, that is, the parts fixed to the fixing portion 20 can be formed by the surface sheet 2. Or the flap part 11 can also be formed by connecting another member which the whole inner surface consists of a nonwoven fabric to the both sides of the absorption main body 10. FIG. Furthermore, since the illustrated form is intended for low birth weight infant use, so-called three-dimensional gathers are not provided, but when three-dimensional gathers are provided, the sheet forming the three-dimensional gathers is composed of a nonwoven fabric, It is also possible to cover at least both sides of the back portion 10B.

  Further, the covering sheet 30 for preventing the fixing part 20 from being exposed is not particularly limited as long as it can be fixed in a peelable manner by the fixing function of the fixing part 20, but a sheet having a smooth surface and less irritation is preferable. , Non-woven fabric, laminate film obtained by laminating a non-woven fabric and a resin film (if the fixing portion 20 is a hook tape, the non-woven fabric is the side of the fixing portion 20; ) Or woven fabric is preferred. As a nonwoven fabric, the same thing as a surface sheet can be used. When the covering sheet 30 is used in place of the adhesive tape for fixing the tube 40 or the like (not only the embodiment shown in FIG. 6 but also the embodiment having the slits 31 described later), the covering sheet 30 contacts the fixing portion 20. It is preferable that the dynamic friction coefficient (as described above) of the surface to be performed is 0.85 or more because the tube 40 can be securely held without slipping.

  The covering sheet 30 may be attached to each diaper in the product state, or may be attached as a separate sheet from the diaper. In consideration of the convenience of the user, it is desirable to paste each diaper in advance. When the covering sheet 30 is pasted on the diaper in advance, it is desirable to use the fixing function of the fixing portion 20 so that the entire fixing portion 20 is covered. You may affix on the part other than the fixing | fixed part 20 or the fixing | fixed part 20 using an agent etc. In addition, when the covering sheet 30 is peeled off from the fixing portion 20, even if the entire covering sheet 30 is separated from the diaper, a part of the covering sheet 30 is fixed to the fixing portion 20 so that the covering sheet 30 does not fall off. It may be fixed to an appropriate place such as the periphery by adhesion or welding.

  On the other hand, in order to more securely fix the tube etc. 40, as shown in FIGS. 7 and 8, the covering sheet 30 is provided with a pair of parallel (not intersecting) slits 31 through which the tube etc. 40 is inserted. Is also a preferred form. By providing such a pair of parallel slits 31, the tube or the like 40 can be constrained to the surface of the covering sheet 30 by passing the tube or the like 40 in the order of one slit 31 and the other slit 31. Moreover, manufacture is also easy. Although the slits in the illustrated example are linear slits arranged in parallel, as long as they are arranged in parallel, they do not have to be parallel, and each slit may be curved instead of linear.

  When the tube etc. 40 is fixed by the slit 31, the tube etc. 40 can be pulled out when changing the diaper. However, when the exchange frequency is high (the diaper exchange frequency in NICU is about 10 per day on average) ) This is not preferable because the work becomes complicated and there is a risk of overloading the wearer. On the other hand, when the portion of the covering sheet 30 that has at least the slit 31 and has a dimension that can cover the fixing portion 20, preferably the whole is separable from the diaper, the covering sheet 30 can be replaced when changing the diaper. The covering sheet 30 can be separated from the used diaper together with the tube etc. 40 while the tube etc. 40 is passed through the slit 31, and can be directly attached to the fixed part 20 of the new diaper. 40 Fixing work can be simplified.

  In order to make it easy to remove the tube 40 from the covering sheet 30, as shown in FIGS. 7 and 8, the covering sheet 30 is provided with a perforation 32 connecting a pair of parallel slits 31 or the parallel slits 31. It is also preferable to provide continuous cuts connecting the gaps. By separating the perforation 32, the tube 40 and the like can be easily detached from the covering sheet 30. The position at which the perforation 32 is provided can be determined as appropriate. In addition to being provided so as to connect one end in the longitudinal direction of both slits 31 as shown in the figure, the center in the longitudinal direction of the slit 31 and both ends in the longitudinal direction of the slit 31 are also provided. It is also possible to provide a plurality of them.

  The direction and number of slits 31 can be determined as appropriate. 9 and 10 show some examples in the case where the slit 31 is provided. In addition to providing one set of slits 31 as shown in FIG. 9 (b), a plurality of sets can also be provided as shown in FIGS. 9 (a) and 9 (c). In addition to the vertical alignment as described above, the horizontal alignment can also be performed as shown in FIG. 9C. In particular, in the case of the horizontal alignment, it is preferable to shift the vertical position as illustrated. Further, the direction of the slit 31 is set to the horizontal direction so as to pass the tube etc. 40 in the vertical direction as shown in FIGS. 9A and 9C, or the tube etc. 40 is set in the horizontal direction as shown in FIG. The vertical direction can be set to pass in the direction, or the direction perpendicular to the vertical direction can be set to pass the tube 40 in the oblique direction as shown in FIG.

  Further, when the entire covering sheet 30 is separable from the diaper, as shown in FIG. 10, the mounting angle of the covering sheet 30 with respect to the fixing portion 20 (rotation angle around the center of the covering sheet) is 0 to 360 degrees. It is also a preferable form to determine each dimensional shape of the covering sheet 30 and the fixing portion 20 so that the entire fixing portion 20 can be covered within a range. Specifically, the form shown in FIG. 10A is a combination of the rectangular fixing part 20 and the circular covering sheet 30, and the diagonal length of the fixing part 20 is made shorter than the diameter (minor axis) of the covering sheet 30. The configuration shown in FIG. 10B is a combination of the circular fixing portion 20 and the rectangular covering sheet 30, and the diameter (short diameter) of the fixing portion 20 is larger than the length of each side of the covering sheet 30. It is a shortened one. Since each dimension shape of the covering sheet 30 and the fixing portion 20 satisfies this condition, the direction of the covering sheet 30 can be rotated as shown by the two-dot chain line in accordance with the direction of the tube 40 or the like. The entire fixing portion 20 can be covered.

  The present invention is suitable for disposable diapers used for infants, particularly low birth weight infants in medical facilities such as hospitals, but can also be used for adults. Suitable for wearer applications that need to be secured to the surface.

  DESCRIPTION OF SYMBOLS 1 ... Disposable diaper, 1A ... Front end side part, 1B ... Base end side part, 2 ... Top sheet, 3 ... Liquid impervious back sheet, 4 ... Absorber, 5 ... Peripheral part, 6 ... Elastic elastic member, 10 ... Absorption body, 20... Fixing part, 30.

Claims (7)

An absorbent body having a ventral portion and a dorsal portion;
A fixing portion made of a hook tape or a pressure-sensitive adhesive layer of a mechanical fastener, provided in the width direction intermediate portion on the outer surface of the abdomen side of the absorbent main body,
The entire fixing portion can be covered, and a covering sheet that is fixed to the fixing portion so as to be peelable, and the entire inner surface that protrudes outward in the width direction on both side portions of the back side portion of the absorbent body is formed of a nonwoven fabric. A flap portion,
At the time of mounting, the flap portion was fixed to the fixing portion of the outer surface of the abdominal side of the absorption body, and the entire fixing portion was covered with the covering sheet from above.
A disposable diaper characterized by that.   The disposable diaper of Claim 1 whose dynamic friction coefficient of the surface which contacts the said fixing | fixed part in the said coating sheet is 0.85 or more.   The disposable diaper according to claim 1 or 2, wherein the cover sheet is provided with one or more pairs of parallel slits through which tubes or cords are inserted.   The disposable diaper according to claim 3, wherein a portion of the covering sheet that has at least a slit and has a dimension capable of covering the fixing portion is separable from the diaper.   The disposable diaper according to claim 4, wherein the covering sheet is provided with a perforation connecting the pair of parallel slits.   The disposable diaper according to claim 3, wherein the covering sheet can cover the entire fixing portion in an entire range of 0 to 360 degrees with respect to the fixing portion.   The said fixing | fixed part is a hook tape of a mechanical fastener, and the said coating sheet is a laminated film which laminated | stacked the nonwoven fabric, the nonwoven fabric, and the resin film, or woven fabric of any one of Claims 1-6. Disposable diapers.

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