JP2006230564A - Disposable diaper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disposable diaper which facilitates the attachment and removal of an auxiliary absorbent pad and prevents the displacement of the auxiliary absorbent pad and the curling of the end part on the attachment and during the attachment. <P>SOLUTION: The disposable diaper comprises a pad cover 7 which covers the skin abutting surface side of the end part of the auxiliary absorbent pad and is fixed on the auxiliary absorbent pad 20 and a main body 10 of the diaper having an abdominal side part A and a back side part B. The pad covers 7 are respectively provided on the abdominal side part A and the back side part B, and each pad cover 7 has a fixing part 71 fixed on the main body 10 and a tying part 73 tied to the auxiliary absorbent pad. A rigid material (an absorbent core 4 or the like) which gives a prescribed shape-retaining properties to the main body of the diaper is disposed at a region superposed on each tying part 73 in the main body 10 of the diaper. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a disposable diaper.

Conventionally, in hospitals, nursing homes, home care settings, etc., an auxiliary absorbent pad is placed on the inner surface of the disposable diaper and used together with the diaper. If the amount of urination is small, only the auxiliary absorbent pad is replaced. Things have been done. Thereby, the frequency | count of replacement | exchange of a disposable diaper is reduced, and reduction of the effort and cost accompanying replacement | exchange of a diaper is performed.
However, in a conventional disposable diaper, the auxiliary absorbent pad placed on the inner surface of the diaper is displaced when the diaper is worn, or the end of the auxiliary absorbent pad is rounded by friction with the wearer's skin. , May cause a deterioration of the wearing feeling.
Patent Document 1 describes a pants-type body fluid absorbent wearing article in which a body fluid absorbent pad is detachable.

JP-A-9-75390

  However, the pant-type body fluid absorbent wearing article of Patent Document 1 is a body fluid absorbent pad that is provided with an absorbent performance and is detachable. Further, when the auxiliary absorbent pad is used in combination for the purpose of reducing labor and cost associated with the replacement of the diaper, there arises a problem such as misalignment of the auxiliary absorbent pad and rounding of the end portion.

  Accordingly, an object of the present invention is to provide a disposable diaper that can easily attach and detach the auxiliary absorbent pad and is less likely to cause displacement of the auxiliary absorbent pad or rounding of the end during wearing or wearing. is there.

  The present invention comprises a pad cover that covers the skin contact surface side of the end portion of the auxiliary absorbent pad and is fixed to the auxiliary absorbent pad, and a diaper main body having an abdominal side portion and a back side portion. Are provided on each of the abdominal part and the back part, and each pad cover has a fixing part fixed to the diaper body and a fixing part fixed to the auxiliary absorbent pad. And the disposable diaper by which the rigid material which provides predetermined | prescribed shape retention property to this diaper main body is distribute | arranged to the site | part which overlaps with the said fastening part in the said diaper main body is provided.

  The disposable diaper of the present invention can easily attach and detach the auxiliary absorbent pad, and the auxiliary absorbent pad is less likely to be misaligned or rounded at the end of wearing or wearing.

The present invention will be described below based on preferred embodiments with reference to the drawings.
The pants-type disposable diaper 1 (hereinafter referred to as diaper 1) of the present embodiment, as shown in FIG. 1, is a ventral side A disposed on the wearer's ventral side and a dorsal side disposed on the back side when worn. The diaper main body 10 which has the part B and the crotch part C distribute | arranged among them is comprised as a main body, The both sides of the ventral | abdominal side A of the diaper main body 10, and the both sides of the back side B are FIG. As shown in FIG. 4, the pair of side seal portions 11 (only one is shown), the waist opening portion 12 and the pair of leg openings are joined together by known joining means such as heat seal, high frequency seal, ultrasonic seal, and adhesive. A portion 13 (only one is shown) is formed. The abdominal part A, the back part B, and the crotch part C in the present diaper 1 are generally regions when the diaper main body 10 in the unfolded state is divided into three regions by dividing the longitudinal direction into three equal parts. .

The diaper main body 10 includes an absorbent main body 5 including a liquid-permeable top sheet 2, a liquid-impermeable back sheet 3, and an absorbent core 4 disposed between both sheets, and an outer surface side of the absorbent main body 5. And an exterior body 6 that fixes the absorbent main body 5. The exterior body 6 includes an outer layer sheet 61 constituting the outer surface of the diaper, an inner layer sheet 62 laminated and adhered to the inner surface side thereof, and elastic members 63, 64, and 65 of each part fixed between these two sheets. It is configured.
The inner layer sheet 62 has a portion made of a second sheet 62B that is separate from the first sheet 62A constituting the majority of the inner layer sheet 62 in the vicinity of both ends 10a, 10b in the longitudinal direction of the diaper body 10. The end portions of the second sheet 62B near the crotch portion C are disposed on the skin contact surface side at both ends in the longitudinal direction of the absorbent main body 5, and are fixed on the absorbent main body 5, and the main body 5 are fixed on the first sheet 62A. The absorptive main body 5 is integrated with the exterior body 6 by adhesion with an adhesive or the like between the first sheet 62A and fixing of both ends by such a method.

  The diaper 1 has a pad cover 7 for fixing an auxiliary absorbent pad on each of the abdominal side A and the back side B of the diaper main body 10. As shown in FIG. 2, each pad cover 7 has a fixing portion 71 fixed to the diaper main body 10 and a free portion 72 not fixed to the diaper main body 10. In the vicinity of the end opposite to the fixing portion 71 side, there is a fastening portion 73 that is detachably fastened to the auxiliary absorbent pad. The fastening part 73 may be formed by applying an adhesive, but the fastening part 73 in this embodiment is made of a male member of a mechanical surface fastener. Therefore, even if the peeling operation is repeated, the engaging force of the fastening portion does not decrease.

  The pad cover 7 preferably has a length of the diaper longitudinal direction of the free portion 72 of at least 5.0 cm from the viewpoint of reliably covering the skin contact surface side of the end of the auxiliary absorbent pad. More preferably, it is 0-10.0 cm. The length of the diaper longitudinal direction of the free part 72 is measured along the surface of the pad cover 7 in the same direction as the longitudinal direction (vertical direction in FIG. 1) of the diaper main body 10 in the unfolded state. Further, the pad cover 7 has a diaper lateral length W (see FIG. 1) of preferably at least 5.0 cm, more preferably 8.0 to 15.0 cm.

In the diaper 1, as shown in FIG. 2, an absorbent core 4 (rigid material) that imparts a predetermined shape retaining property to the diaper main body 10 is disposed at a portion that overlaps the fastening portion 73 of the diaper main body 10. ing.
Here, the portion overlapping each fastening portion 73 is a portion overlapping each fastening portion 73 in a state where each pad cover 7 is tilted in the crotch portion C direction and stacked on the diaper main body 10.
The absorbent core 4 (rigid material) preferably has a dimension in the diaper lateral direction (left-right direction in FIG. 1) at a portion overlapping the fastening part 73 greater than or equal to the dimension in the same direction of the fastening part 73. It is preferable that it is more than the dimension of the cover 7 of the same direction.

  The absorbent core 4 (rigid material) preferably has a bending rigidity of 10 g or more. The upper limit of the bending stiffness is not particularly limited, but the upper limit is about 100 g from the viewpoint of not giving the wearer a feeling of strangeness.

Here, the rigidity is a value measured as follows.
Measured using a tester handometer (model HOM-2) defined in JIS L-1096. Cut out a 5 cm × 5 cm test piece from the absorbent core so as to include a part overlapping the fastening part (remove the gather if there is a gather, and position the part overlapping the fastening part as close to the center as possible), The test piece is placed on the sample stage so that the diaper longitudinal direction of the test piece is parallel to the slot (the direction in which the slot extends) (slot width of 30 mm). And the resistance value (g) when pressing the test piece and pushing in 8 mm is read.

When using this auxiliary diaper 1 together with the auxiliary absorbent pad 20, as shown in FIGS. 3 and 4, the auxiliary absorbent pad 20 is placed on the absorbent main body 5, and both end portions in the longitudinal direction of the auxiliary absorbent pad 20. Are covered with the front and rear pad covers 7 and fixed. As shown in FIG. 4, both ends of the auxiliary absorbent pad 20 are fixed by putting the front and rear pad covers 7 on both ends of the auxiliary absorbent pad 20, and placing each pad cover 7 on the skin contact surface of the auxiliary absorbent pad 20. Just press lightly on Further, by covering both ends of the auxiliary absorbent pad 20 with the pad cover 7 in this way, the end of the auxiliary absorbent pad 20 is prevented from being rounded when the diaper is mounted as shown in FIG. Thus, the diaper 1 on which the auxiliary absorbent pad 20 is stacked can be mounted smoothly. M in FIG. 5 indicates the wearer's skin.
When the auxiliary absorbent pad 20 is removed, the fixed state of the auxiliary absorbent pad 20 is released simply by peeling the pad cover 7 from the auxiliary absorbent pad 20 as shown by a phantom line in FIG. be able to.

In this way, the diaper 1 can easily attach and detach the auxiliary absorbent pad 20 with a simple operation. For this purpose, the fastening portion 73 and the rigid material (absorbent core) 4 overlap each other. It is extremely important.
That is, when there is no absorbent core 4 that is a rigid material, the portion of the diaper body that overlaps the pad cover fastening portion (the exterior body 6 that does not have an absorbent core and is composed of an outer layer sheet and an inner layer sheet) is gathered. The pad cover itself shrinks in the diaper width direction at the same time as the pad cover itself shrinks in the diaper width direction under the contraction force of the diaper, making it difficult for the wearer or caregiver to find the fastening part, Since it is difficult, it takes time to install the auxiliary absorbent pad. Moreover, although the said problem is solved if pad cover itself is made high-rigidity, the problem that the material which comprises a pad cover will be restrict | limited or a feeling of strangeness will be produced at the time of wear.
On the other hand, when the rigid material (absorbent core) 4 which gives predetermined | prescribed shape retention property to this diaper main body is distribute | arranged to the site | part which overlaps with the said fastening part in the diaper main body like the diaper 1. Even when the auxiliary absorbent pad is attached or after the auxiliary absorbent pad is peeled off, the portion of the diaper body that overlaps the fastening part of the pad cover is prevented from contracting in the diaper width direction due to the contraction force of the gathers. Therefore, the auxiliary absorbent pad can be easily attached and detached, and the material constituting the pad cover is not limited, and a soft one or a stretchable one can be freely selected.

As described above, when the rigid material 4 is disposed so as to overlap the portion of the diaper main body 10 where the elastic member is disposed, the elastic member 64 in which the rigid material 4 is disposed on the waistline portion is provided. This is especially effective when they are arranged in layers.
Here, the waistline portion is a region in which the distance from the end portion 10a (10b) in the longitudinal direction of the diaper body 10 is in the range of 2.0 to 20.0 cm.

Next, a pant-type diaper 1A according to another embodiment of the present invention will be described. About the diaper 1A, a difference with the diaper 1 mentioned above is demonstrated, about the same point, the same code | symbol is attached | subjected and description is abbreviate | omitted. About the point which is not demonstrated especially, the description mentioned above about the diaper 1 is applied suitably.
In the diaper 1A, the length of the absorbent main body 5 is shorter than that of the diaper 1, and a rigid material 4A separate from the absorbent core 4 is fixed to a portion of the diaper main body 10 that overlaps the fastening portion 73. ing. The rigid material 4A in the present diaper 1A is made of a rigid sheet material having a thickness of about 1.0 to 10.0 mm. A material for forming the rigid material when the rigid material 4A separate from the absorbent core 4 is disposed is not particularly limited as long as it is rigid such as a nonwoven fabric or a film.
Also in this embodiment, it is preferable that the rigid member 4A has a bending rigidity of 10 g or more, particularly 30 g or more. If it is lower than 10 g, the rigid material 4A loses the shrinkage force of the gathers and shrinks in the diaper width direction, and at the same time, the pad cover itself shrinks in the diaper width direction, so that a sufficient area cannot be obtained and it takes time to attach and detach the auxiliary absorbent pad. Occurs. The upper limit is not particularly limited, but is about 100 g.
Here, the rigidity is a value measured in the same manner as the rigidity of the absorbent core 4 described above. Moreover, it is preferable that the dimension of the rigid material 4A is the same as or larger than the dimension of the fastening portion 73, and is preferably equal to or larger than the width of the cover sheet.

The formation material of each part of the diaper 1 and 1A is demonstrated. As materials for forming the top sheet 2, the back sheet 3, the absorbent core 4, the outer layer sheet 61, the inner layer sheet 62, and the like, various materials used in conventional disposable diapers and the like can be used. For example, as the absorptive core 4, an aggregate of hydrophilic fibers or a material in which a superabsorbent polymer is held can be used. As such an absorbent body, a pile fiber product of pulp fibers, a mixed fiber product of pulp fibers and a super absorbent polymer, or the like can be used. It can also be included, or it can also be set as an absorber by combining such a piled fiber and paper, a nonwoven fabric, etc.
As the elastic members 63, 64, 65 of each part, various known elastic materials conventionally used for disposable diapers and the like can be used. For example, as a material, synthetic rubber such as styrene-butadiene, butadiene, isoprene, neoprene, Elastic materials such as natural rubber, EVA, elastic polyolefin, urethane, etc. can be widely used. For example, the cross section is rectangular, square, circular, polygonal, multifilament type, etc. A thing or a strip | belt-shaped thing etc. can be used.

  As the sheet material constituting the pad cover 7, a nonwoven fabric or a film made of synthetic fibers made from polyethylene, polypropylene, polyester, or other thermoplastic resin is used. Natural fibers may be used, or synthetic fibers and natural fibers may be used in combination. These materials may be liquid permeable or liquid impermeable.

  Further, the pad cover 7 is preferably stretchable from the viewpoint of covering and fixing both end portions of auxiliary absorbent pads having various lengths. Examples of the material for forming the pad cover 7 to be stretchable include a method in which an elastic member (thread rubber, flat rubber, etc.) is disposed on the sheet material, and a method comprising a sheet that is elastically stretchable. As the elastic stretchable sheet, for example, a laminated sheet obtained by laminating and integrating fiber assemblies that can be stretched on one or both sides of a sheet made of an elastomer material can be used. As the elastomer material, natural rubber, synthetic rubber such as butadiene, isoprene, or the like is preferably used. As the sheet made of the elastomer material, an elastic film obtained by forming the elastomer material into a film, an elastic fiber made of the elastomer material, A sheet formed into a shape or made into a non-woven fabric is preferably used. As the fiber assembly, a non-woven fabric having extensibility itself, for example, a non-woven fabric made of spandex, or the like that does not have extensibility even without secondary processing such as formation of slits. What gave the extensibility by secondary processes, such as formation, can be used.

  Moreover, as a male member of the mechanical hook-and-loop fastener for forming the fastening part 73, the various well-known thing by which many protrusion-shaped engagement members were distribute | arranged on the surface can be especially used, for example, Using male members such as “Magic Tape (registered trademark)” (manufactured by Kuraray Co., Ltd.), “Quicklon (registered trademark)” (manufactured by YKK), “Majikurosu (registered trademark)” (manufactured by Kanebo Bell Touch), etc. it can. Examples of the engaging member of the male member include those having a bowl shape, bowl shape, mushroom shape, and the like.

As mentioned above, although preferable embodiment of this invention was described, this invention is not restrict | limited to each embodiment mentioned above, A various change is possible in the range which does not deviate from the meaning of this invention.
For example, the diaper of the present invention may be one in which the upper and lower surfaces of the absorbent main body are liquid permeable and a liquid-impermeable sheet is disposed in the outer package. The diaper body has a top sheet, a back sheet, and an absorbent core disposed between the absorbent body and the exterior body, and the back sheet is the outer surface of the diaper and the outer shape of the diaper. May be formed. In addition, the pad cover has a variety of shapes such as a square shape, a semicircular shape, an elliptical shape, a triangular shape, and the like, instead of the substantially rectangular shape having a curved end portion on the crotch side, like the diaper 1. can do.

  In addition, as the auxiliary absorbent pad to be used in combination, one that has been conventionally used by being placed on the inner surface of a disposable diaper can be used without particular limitation. Typically, a liquid-permeable surface sheet, a liquid, etc. It has an impermeable (including poorly permeable) back sheet and an absorbent core interposed between the two sheets. However, the back sheet may be liquid permeable.

  The disposable diaper of the present invention is particularly suitable for a pants-type diaper for adults, but it may be a pants-type disposable diaper for infants, and instead of a pants-type diaper, a so-called taped type (expanded type) It may be a diaper.

FIG. 1 is a developed plan view showing a state in which a pants-type disposable diaper according to an embodiment of the present invention is developed by peeling off a side seal portion. FIG. 2 is a schematic cross-sectional view showing a part of the cross section taken along the line XX of FIG. FIG. 3 is a developed plan view (a diagram corresponding to FIG. 1) showing a state in which the auxiliary absorbent pad is placed and fixed on the inner surface of the diaper of FIG. 1. 4 is a schematic cross-sectional view (a diagram corresponding to FIG. 2) showing a state in which the auxiliary absorbent pad is placed and fixed on the inner surface of the diaper of FIG. FIG. 5 is a partially broken schematic view of the state in which the diaper of FIG. 1 is worn as seen from the side. FIG. 6 is a developed plan view showing a state in which a pants-type disposable diaper according to another embodiment of the present invention is developed by peeling off the side seal portion. FIG. 7 is a schematic cross-sectional view showing a cross section taken along line YY of FIG.

Explanation of symbols

1 disposable diaper 7 pad cover 7
73 Fastening A A Ventral B B Doral C Crotch

Claims (4)

Covering the skin contact surface side of the end of the auxiliary absorbent pad, and comprising a pad cover fixed to the auxiliary absorbent pad, and a diaper body having a ventral part and a dorsal part,
The pad cover is provided on each of the abdominal side and the back side, and each pad cover includes a fixed part fixed to the diaper body and a fastening part fastened to the auxiliary absorbent pad. A disposable diaper in which a rigid material that imparts a predetermined shape retaining property to the diaper main body is disposed at a portion of the diaper main body that overlaps the fastening portion.   The disposable diaper according to claim 1, wherein the rigid material is disposed so as to overlap with a portion of the diaper main body where an elastic member is disposed.   The disposable diaper according to claim 1 or 2, wherein the fastening portion is a male member of a mechanical surface fastener. The disposable diaper according to claim 1 or 2, wherein the pad cover has elasticity.