JP6460877B2 - Absorbent articles - Google Patents

Description

  The present invention relates to an absorbent article.

  Conventionally, as a paper diaper, a tape type and a pants type are known. When such a paper diaper is used for a long time such as at night, an inner pad may be attached between the three-dimensional gathers of the paper diaper to prevent urine leakage.

When the inner pad does not have a function of fixing to the paper diaper, a gap is generated between the paper diaper and the inner pad, and the inner pad is displaced at the time of wearing, which causes urine leakage.
For this reason, a paper diaper having a function of fixing the inner pad has been proposed. For example, Patent Document 1 includes a pad connecting portion that is detachably fixed to the surface of the top sheet. When the inner pad is laid, the pad connecting portion is peeled off from the surface of the top sheet, Paper diapers configured to connect to the side surfaces have been proposed.

JP 2012-245304 A

  However, in the configuration of Patent Document 1, troubles such as re-pasting to adjust the position of the inner pad to an appropriate position are generated, and the load of replacing the inner pad is large. In particular, for elderly people and people with disabilities, the replacement of the inner pad is very complicated, and the fixing function is often not used.

  An object of the present invention is to provide an absorbent article in which an inner pad can be easily fixed and attached.

In order to solve the above problems,
The invention described in claim 1
Absorption comprising: an absorbent main body including an absorbent body; and a backsheet that is provided on the outer surface side of the absorbent main body and has a ventral part located on the ventral side of the human body and a dorsal part located on the dorsal side when worn. In the sex goods,
One end is fixed to each end in the width direction of the absorbent main body, and a rising portion that rises in the vertical direction is formed by being folded inward, and includes a pair of gather portions extending in the longitudinal direction,
The pair of gathers is
The expansion / contraction part that can be expanded and contracted in the vertical direction, and the deformation part that extends in the vertical direction as the expansion / contraction part extends, and that extends to the center in the width direction as the expansion / contraction part contracts When,
With
An inner pad can be inserted between the deformable portion and the absorbent main body.

The invention according to claim 2 is the absorbent article according to claim 1,
The center part of the up-down direction in the state extended to the up-down direction of the said deformation | transformation part is weaker than the both ends of the said up-down direction, It is characterized by the above-mentioned.

The invention according to claim 3 is the absorbent article according to claim 1 or 2,
Comprising a gather sheet that constitutes the pair of gather portions;
The deformable portion includes a sheet material in which both end portions are folded and a facing surface by folding is bonded to a gather sheet.

The invention according to claim 4 is the absorbent article according to claim 1 or 2,
Comprising a gather sheet that constitutes the pair of gather portions;
The deformable portion is formed by two portions of the gather sheet being folded back and bonding the gather sheets together; and
A non-adhered portion that is located between the two adhesive portions and to which the gather sheet is not adhered.

Moreover, invention of Claim 5 is an absorbent article as described in any one of Claims 1-4,
The deformation part is provided in a symmetrical shape on both sides of each of the pair of gather parts.

  ADVANTAGE OF THE INVENTION According to this invention, it can be set as the absorbent article which can fix | wear with an inner pad easily.

It is a perspective view which shows the paper diaper in embodiment of this invention. It is an expanded view of the paper diaper of FIG. It is sectional drawing in the III-III line of FIG. It is sectional drawing which shows the deformation | transformation part at the time of inner pad mounting | wearing. It is sectional drawing which shows the deformation | transformation part at the time of inner pad mounting | wearing. It is sectional drawing which shows the deformation | transformation part at the time of inner pad mounting | wearing. It is sectional drawing which shows the paper diaper of a modification.

  Hereinafter, an absorbent article which is an embodiment of the present invention will be described in detail with reference to the drawings. However, the scope of the invention is not limited to the illustrated examples.

FIG. 1 is a perspective view showing a pants-type paper diaper (hereinafter simply referred to as “paper diaper”) as an absorbent article in the present embodiment. FIG. 2 is a development view showing the inside of the disposable diaper of FIG. 3 is a cross-sectional view taken along line III-III in FIG.
In the following description, the direction perpendicular to the longitudinal direction (front-rear direction) and the short direction (left-right direction) of the paper diaper when the paper diaper is unfolded as shown in FIG.
Further, in FIG. 3, the right gather portion 10 is shown in an upright state, but the left and right gather portions 10 and 10 are symmetrical and are usually overlapped like the left gather portion 10. It has become.

  As shown in FIG. 1, the disposable diaper 100 extends, for example, from the abdominal side F located on the abdominal side of the human body, the dorsal side B located on the dorsal side, and the abdominal side F to the dorsal side B when worn. A backsheet 1 having a crotch portion M located between the crotch of a human body when worn, an absorbent main body 2 provided on the inner surface of the backsheet 1, and a gather portion 10 provided on both sides of the absorbent main body 2, 10.

The paper diaper 100 is a pant-type by fixing the both ends of the abdomen side F of the back sheet 1 in the width direction and the both ends of the back side B in the width direction to form the joint end J located on the side of the human body. It is molded into a shape.
In the paper diaper 100, the waist side opening W and the pair of left and right leg openings L are formed by joining the ventral side F and the back side B of the backsheet 1 at the joining end J. It is formed.

As shown in FIGS. 2 and 3, the back sheet 1 includes a liquid-impermeable outer sheet 1 </ b> A and an inner sheet 1 </ b> B made of nonwoven fabric, and the back surface side of the absorbent main body 2 (external side when worn on the human body). It is formed in a shape that covers.
As a raw material of the nonwoven fabric used for the outer sheet 1A, the inner sheet 1B, the top sheet 23 described later, the gathered portion 10, and the like, any of natural fibers and synthetic fibers may be used. Examples of natural fibers include cotton, cellulose (wood pulp), wool, silk and the like. In addition, examples of synthetic fibers include polypropylene (PP), polyethylene (PE), nylon, polyester (PET), acrylic, etc., and PE / PP mixed nonwoven fabric, PE / PET mixed nonwoven fabric, and combinations of the above materials as appropriate. Bicomponent fibers (mixed fibers) can also be used.

  Moreover, as a method of manufacturing a nonwoven fabric from these fiber materials, a well-known method can be used suitably, for example, any methods, such as a chemical bond, a thermal bond, and a spun lace, may be used. Synthetic fiber materials and the like may be manufactured using any method such as a spunbond method, a melt blow method, or a combination of these and the above bonding method.

In addition, a plurality of elastic members 3 such as thread rubber are sandwiched and fixed between the outer sheet 1A and the inner sheet 1B in the back sheet 1.
The elastic member 3 is provided in a portion corresponding to the waist circumference opening W and the pair of left and right leg circumference openings L in the backsheet 1, and when the disposable diaper 100 is used, the elastic member 3 causes the waist and legs of the human body to be used. The paper diaper 100 extends and contracts around.

  The absorptive main body 2 is formed to have a length extending from the abdominal side F of the backsheet 1 to the backside B through the crotch M, and is provided on the inner surface of the backsheet 1.

The absorbent main body 2 absorbs water-like components such as urine as a body fluid when the disposable diaper 100 is used.
As shown in FIG. 3, the absorptive main body 2 includes, for example, an absorbent material such as cotton or pulp, or a sheet-like base material such as fiber or film and a super absorbent polymer (SAP). The absorbent body 20 formed by the above, a liquid-permeable crepe paper 21 that wraps the absorbent body 20, a waterproof film 22 having a water-blocking property that covers the back side of the absorbent body 20, and the front side of the absorbent body 20 (the human body side) ), And the like.
The absorbent main body 2 is fixed to the backsheet 1 by bonding the outer surface of the waterproof film 22 to the inner surface of the backsheet 1.

The gathers 10 and 10 are provided symmetrically on the top sheet 23 side of the disposable diaper 100 so that both sides of the absorbent main body 2 extend in the longitudinal direction (front-rear direction).
The gathers 10 and 10 prevent the body fluid from overflowing to the outside of the paper diaper 100 before being absorbed by the absorber 20, and are pushed back toward the absorber 20.

  The gather part 10 of this embodiment is disposed between the tip part 11 and the fixing part 12, for example, a gather sheet 10 </ b> A including a tip part 11 that can stand upward and a fixing part 12 that is fixed to the backsheet 1 side. The stretchable portion 13 and the deformable portion 14 that deforms as the stretchable portion 13 expands and contracts are configured.

The front end portion 11 is formed, for example, by folding a liquid-impervious nonwoven fabric sheet in half and fixing the folded surface by, for example, hot melt, heat sealing, ultrasonic sealing, or the like. A plurality of elastic members 11a extending in the longitudinal direction are sandwiched and fixed between the surfaces where the nonwoven fabric sheets are folded.
In the state where the gather part 10 is fixed to the paper diaper 100, the tip part 11 stands upward to form a three-dimensional gather. Further, due to the elastic member 11a of the distal end portion 11, the gather portion 10 is deformed so as to expand and contract in accordance with the human body, and has a structure that easily fits the human body.

The fixing portion 12 is formed by, for example, superimposing two liquid-impermeable nonwoven fabric sheets and fixing the overlapped surface by, for example, hot melt, heat sealing, ultrasonic sealing, or the like. .
The gather part 10 is fixed to the side part of the absorptive main body 2 by being fixed so that the one end part of the fixing | fixed part 12 may be pinched | interposed between the top sheet 23 and the inner surface sheet 1B.
Further, the other end portion of the fixed portion 12 is bent so as to rise upward, thereby forming a rising portion 12a that is a starting point of a three-dimensional rising.

The elastic part 13 is, for example, an elastic member such as an elastic elastic sheet in which a rubber thread, an elastic film, or an elastic film is sandwiched between sheet layers, and extends in the vertical direction at predetermined intervals in the longitudinal direction. Is provided.
The upper end portion of the stretchable portion 13 is fixed to the distal end portion 11, and the lower end portion of the stretchable portion 13 is fixed to the fixed portion 12 so as to extend in the vertical direction.

The deformable portion 14 includes sheet materials 141 and 141 in which both end portions are folded and the facing surfaces are folded.
The sheet materials 141 and 141 are formed so as to have a symmetrical shape on both sides of the gather portion 10 (see the gather portion 10 on the right side of FIG. 3). That is, the deformable portion 14 is provided in a symmetrical shape on both sides of the pair of gather portions 10 and 10.

Each sheet material 141 is, for example, a liquid-impervious nonwoven fabric, and both end portions 141a and 141a are folded and bonded by, for example, hot melt, heat sealing, ultrasonic sealing, or the like.
Thus, the rigidity of the both end portions 141a and 141a of the sheet material 141 is increased by the sheet material 141 being stacked and bonded. Further, the central portion 141b of the sheet material 141 is thinner than the both end portions 141a and 141a and has low rigidity, and becomes a base point when the sheet material 141 is bent.

  In addition, the sheet material 141 is set so that the total length (the total length when not bent) is about 2 to 5 times longer than the total length of the stretchable portion 13 (the total length when no tensile force is applied).

In such a sheet material 141, upper and lower end portions 141 a and 141 a are fixed to the lower end of the tip end portion 11 and the other end of the fixing portion 12, respectively, and are deformed as the extension and contraction portion 13 expands and contracts. .
That is, in a state in which the stretchable portion 13 is contracted (a state in which no tensile force is applied), the central portion 141b is bent and extends in the width direction, and the stretchable portion 13 is in a stretched state (the tensile force is In the added state), the central portion 141b is extended and deformed into a shape extending in the vertical direction.

Next, a procedure for attaching the inner pad P to the paper diaper 100 will be described.
4 to 6 are cross-sectional views taken along the line III-III in FIG. 2, and are diagrams for explaining the state of the gathers 10 and 10 when the inner pad P is mounted.

  In addition, since the gather parts 10 and 10 are normally in the contracted state, the deformable part 14 extends in the width direction as shown by the gather part 10 on the left side of FIG. 3 in the normal state. Shape.

When wearing the inner pad P, the user or caregiver performs an operation of pulling the gathers 10 and 10 upward.
As a result, as shown in FIG. 4, the stretchable portion 13 is extended, whereby the sheet material 141 of the deformable portion 14 is gradually stretched, and finally, as shown in FIG. 5, the shape extending in the vertical direction. It becomes.
As the shape of the sheet material 141 of the deformable portion 14 is deformed in this way, spaces S are formed on both side portions on the absorbent main body 2, and the inner pad P can be easily placed on the absorbent main body 2.

And a user or caregiver performs the operation | movement which releases the gather parts 10 and 10 pulled upwards, after mounting the inner pad P on the absorptive main body 2. FIG.
As a result, as shown in FIG. 6, the expansion and contraction portion 13 contracts, so that the sheet material 141 of the deformation portion 14 has an original shape, that is, a shape extending in the width direction.
As described above, the shape of the sheet material 141 of the deformable portion 14 is deformed, whereby both side portions of the inner pad P placed on the absorbent main body 2 are suppressed by the sheet material 141.
At this time, since the inner pad P is pressed onto the absorbent main body 2 due to the weight of the sheet material 141 of the deformable portion 14, it is possible to prevent the inner pad P from shifting.
In addition, when the sheet material 141 of the deformable portion 14 returns to the original shape, the central portion 141b of the sheet material 141 is formed with regions having lower rigidity than the both end portions 141a and 141a. The sheet material 141 is easy to return to the original shape. Thereby, even if it replaces | exchanges repeatedly the inner pad P, the force in which the deformation | transformation part 14 suppresses the inner pad P from upper direction can be maintained uniformly.

  In the above description, it has been described that the user or the like pulls the gathers 10 and 10 upward when the inner pad P is attached to the paper diaper 100. When the inner pad P is newly inserted or replaced, an operation of pulling the crotch M of the paper diaper 100 in the state shown in FIG. 1 away from the human body is performed, that is, by a force applied downward. The gather portions 10 and 10 are raised from the tip of the tip portion 11, and the sheet material 141 of the deformable portion 14 is deformed as shown in FIGS. 4 and 5 to form a space S. FIG. It is possible to attach the inner pad P as shown in FIG.

As described above, according to the present embodiment, the absorbent main body 2 including the absorbent body 20 and the abdominal side portion and the back side which are provided on the outer surface side of the absorbent main body 2 and are located on the ventral side of the human body when worn. In a disposable diaper 100 having a back sheet 1 having a back side portion positioned, one end portion is fixed to each end portion in the width direction of the absorbent main body 2, and a rising portion 12a that rises in the vertical direction by being folded inward. The pair of gathers 10, 10 is formed and extends in the longitudinal direction. The pair of gathers 10, 10 extends in the vertical direction as the stretchable part 13 expands and contracts, and the stretchable part 13 stretchable in the vertical direction. And a deformed portion 14 that extends toward the center in the width direction as the expandable portion 13 contracts, and the inner pad P is inserted between the deformable portion 14 and the absorbent main body 2. Configured to be possible.
For this reason, the deformation | transformation part 14 deform | transforms only by pulling a pair of gather parts 10 and 10 upwards, and the space S which mounts the inner pad P is formed, and the inner pad P is mounted on the absorptive main body 2 When the pair of gathered gathers 10 and 10 are released, the deforming part 14 is deformed again and the inner pad P is suppressed from above.
Therefore, the inner pad P can be easily fixed and attached.

Moreover, according to this embodiment, the center part 141b of the up-down direction in the state extended to the up-down direction of the deformation | transformation part 14 is weaker than the both ends 141a, 141a of an up-down direction.
For this reason, when the deformation | transformation part 14 deform | transforms, the weakly rigid center part 141b of the up-down direction will be bent, and the shape when the deformation | transformation part 14 will be in the state extended in the width direction is made into arbitrary shapes. Can do. Thereby, even if it replaces | exchanges repeatedly the inner pad P, the force in which the deformation | transformation part 14 suppresses the inner pad P from upper direction can be maintained uniformly.

In addition, according to the present embodiment, the sheet material is provided with the gather sheet 10A that forms the pair of gather portions 10 and 10, and the deformable portion 14 is a sheet material in which both end portions are folded and the facing surfaces by folding are bonded to the gather sheet 10A. 141.
For this reason, since the sheet | seat material 141 which turned up both ends and adhere | attached the opposing surface by the return | turnback is only adhere | attached on the gather sheet | seat 10A which forms a pair of gather parts 10 and 10, manufacture is easy.

Moreover, according to this embodiment, the deformation | transformation part 14 is provided in the symmetrical shape in the both sides of a pair of gather parts 10 and 10, respectively.
For this reason, a uniform force is applied to both sides of the gather portion 10, and the deformation portion 14 can be prevented from being deformed during repeated use.

  In the above-described embodiment, the configuration in which the deformed portion 14 is formed with a portion having high rigidity and a portion having low rigidity has been described. However, the deformable portion 14 has the same rigidity over the entire area. Also good. For example, when the deformation portion 14 is formed of a sheet material having a certain degree of rigidity as a whole, it may be deformed into a desired shape by providing a fold line at the center portion thereof.

Moreover, in the said embodiment, although the structure which makes the deformation | transformation part 14 the sheet material 141 separate from the gather sheet 10A was illustrated and demonstrated, as the deformation part 14 is comprised integrally with the gather sheet 10A. good.
In this case, for example, as shown in FIG. 7, a portion having a high rigidity is provided by providing two bonding portions 142 a and 142 a formed by bending a part of the gather sheet 10 </ b> A and bonding the gather sheets 10 </ b> A to each other. The non-bonding part 142b which is formed and is not bonded can be provided between the two bonding parts 142a and 142a.
In addition, in order to form a highly rigid part, the structure of affixing a sheet material on the part which wants to raise rigidity other than this may be sufficient.
Further, even when the deformable portion 14 and the gather sheet 10A are integrated, the deformable portion 14 may be configured to have the same rigidity over the entire area.

  Moreover, in the said embodiment, although the deformation | transformation part 14 illustrated and demonstrated the structure provided in the symmetrical shape on each both sides of a pair of gather parts 10 and 10, the outer side part of the gather part 10 is As long as the shape does not interfere with the up-and-down movement of the gather unit 10, the shape may not be symmetrical.

  Moreover, although the underpants type disposable diaper was illustrated and demonstrated in the said embodiment, a fixed-type paper diaper may be sufficient instead of a underpants type disposable diaper.

100 disposable diapers (absorbent articles)
DESCRIPTION OF SYMBOLS 1 Back sheet 1A Outer surface sheet 1B Inner surface sheet 2 Absorbent main body 20 Absorbent body 21 Crepe paper 22 Waterproof film 23 Top sheet 3 Elastic member 10 Gather part 10A Gather sheet 11 Tip part 11a Elastic member 12 Fixing part 12a Standing part 13 Extending part 14 Deformation part 141 Sheet material 141a End part 141b Center part 142a Adhesion part 142b Non-adhesion part P Inner pad

Claims (5)

Absorption comprising: an absorbent main body including an absorbent body; and a backsheet that is provided on the outer surface side of the absorbent main body and has a ventral part located on the ventral side of the human body and a dorsal part located on the dorsal side when worn. In the sex goods,
One end is fixed to each end in the width direction of the absorbent main body, and a rising portion that rises in the vertical direction is formed by being folded inward, and includes a pair of gather portions extending in the longitudinal direction,
The pair of gathers is
The expansion / contraction part that can be expanded and contracted in the vertical direction, and the deformation part that extends in the vertical direction as the expansion / contraction part extends, and that extends to the center in the width direction as the expansion / contraction part contracts When,
With
An absorbent article, wherein an inner pad can be inserted between the deformable portion and the absorbent main body.   2. The absorbent article according to claim 1, wherein the central portion in the vertical direction in the state where the deformable portion extends in the vertical direction is less rigid than both end portions in the vertical direction. Comprising a gather sheet that constitutes the pair of gather portions;
3. The absorbent article according to claim 1, wherein the deformable portion includes a sheet material in which both end portions are folded and a facing surface by folding is bonded to a gather sheet. Comprising a gather sheet that constitutes the pair of gather portions;
The deformable portion is formed by two portions of the gather sheet being folded back and bonding the gather sheets together; and
The absorbent article according to claim 1, further comprising a non-adhesive portion that is located between the two adhesive portions and to which a gather sheet is not adhered.   The absorbent article according to any one of claims 1 to 4, wherein the deformable part is provided in a symmetrical shape on both sides of the pair of gather parts.

Images