WO2019069468A1

WO2019069468A1 - Disposable diaper for low-body-weight infant

Info

Publication number: WO2019069468A1
Application number: PCT/JP2017/036546
Authority: WO
Inventors: 真紀辻井; 山中　康弘
Original assignee: ユニ・チャーム株式会社
Priority date: 2017-10-06
Filing date: 2017-10-06
Publication date: 2019-04-11
Also published as: JP7034716B2; JPWO2019069468A1; TWM577310U

Abstract

This disposable diaper (1) for low-body-weight infant has a longitudinal direction and a width direction and is provided with an absorbent core (2), and is characterized in that the absorbent core (2) has, at different positions in the longitudinal direction, a first fold-inducing section (21a), a second fold-inducing section (21b) and a third fold-inducing section (21c) which induce folds along the width direction.

Description

Disposable diapers for underweight children

The present invention relates to disposable diapers for low-weight children.

In the disposable diaper of Patent Document 1, a first notch and a second notch are formed at the central portion in the longitudinal direction of the absorbent core so that the crotch region can maintain a flat shape when worn. The first notch and the second notch have a notch shape extending inward in the width direction from the outer edge of the absorbent core.

JP, 2016-77751, A

By the way, low-weight infants who are born low-weight often spend their time in the womb in the womb. The crotch of a low-weight child, who is in a position where both knees are attracted to the abdomen, is on the ventral side of the baby's crotch, with the legs extended on the back. Therefore, as in Patent Document 1, a diaper in which the crotch region is set at the central portion in the longitudinal direction of the absorbent core and the notch is provided is difficult to fit in the crotch region of a low-weight child.

In addition, when the diaper is worn, usually, the baby is turned over, the waist portion on the fastening tape side is placed under the back of the baby, and the fastening tape is locked on the ventral side. However, in the case of low-weight children, diapers may be exchanged for low-weight children who are still lying, because of the concept of minimal handling where it is desirable not to touch the body as much as possible. The diaper may be retrofitted so that fastening and removal of the fastening tape is possible on the back side. Therefore, in the case of a disposable diaper for low-weight children, it is necessary to assume the case of being worn normally and the case of being worn backwards.

Therefore, the present invention has an object to provide a disposable diaper for low-weight infants that can be fitted to low-weight infants who take a posture when in the womb even when worn normally or reversely. I assume.

The main invention for achieving the above object is a disposable diaper for a low weight child having an absorbent core and having a longitudinal direction and a width direction, and the absorbent core is bent along the width direction. A disposable diaper for low-weight children, characterized in that the first folding guide, the second folding guide, and the third folding guide are provided at different positions in the longitudinal direction. is there.
Other features of the present invention will be apparent from the description of the present specification and the accompanying drawings.

According to the present invention, it is possible to provide a disposable diaper for low-weight infants that fits to low-weight infants who take a posture when in the womb even when worn normally or reversely.

It is the top view which looked at the diaper 1 expanded and extended in the longitudinal direction from the skin side. FIG. 2A is a schematic cross-sectional view of the first waist portion 1A, and FIG. 2B is a schematic cross-sectional view of the crotch portion 1B. 3A to 3C are explanatory views of the attached state of the diaper 1. FIG. 2 is a schematic plan view of the diaper 1; FIG. 2 is a schematic plan view of the diaper 1; FIG. 2 is a plan view of an absorbent core 2; It is a schematic plan view of diaper 1 of a modification. FIG. 8A to FIG. 8C are explanatory views of a method of mounting the diaper 1 on a low-weight child smaller than the mounting target.

At least the following matters will be made clear by the present specification and the description of the accompanying drawings.
A disposable diaper for a low weight child having an absorbent core and having a longitudinal direction and a width direction, wherein the absorbent core guides the first folding guide portion to bend along the width direction, It is a disposable diaper for low-weight children, characterized by having a two-fold guiding part and a third folding part at different positions in the longitudinal direction.

According to such a disposable diaper for a low weight baby, it fits with a low weight baby who takes a posture when in the womb even when worn normally and when it is worn reversely.

In this disposable diaper for low-weight children, the second fold induction portion is located at the center of the disposable diaper in the longitudinal direction, and the first fold induction portion and the third fold induction portion are It is a disposable diaper for low-weight children, characterized by being located symmetrically with respect to the center of the disposable diaper in the longitudinal direction.

In this disposable diaper for low-weight children, the second fold induction portion is located at the center of the disposable diaper in the longitudinal direction, and the first fold induction portion is at the center of the disposable diaper in the longitudinal direction. Low in weight, characterized in that it is located in the middle between the first and second ends, and the third fold guiding part is located in the middle between the middle and the other end of the disposable diaper in the longitudinal direction. It is a disposable diaper for children.

According to such a disposable diaper for low-weight children, the low-weight children can be fitted so that their legs can be raised to a position where both knees stick to the abdomen.

In the disposable diaper for low-weight children, the absorbent core has a narrow portion which is narrower than the end portion at the central portion in the longitudinal direction, and the first folding guiding portion, the second folding guiding portion The fold induction | guidance | derivation part and the said 3rd folding induction | guidance | derivation part are located in the said narrow part, It is a disposable diaper for low weight children.

According to such a disposable diaper for low-weight children, the width of the absorbent core that abuts the crotch of the low-weight children becomes narrow. Thus, low-weight children can easily move their legs. In addition, when the legs of a low-weight child are closed, it is possible to suppress the pressure on the skin of the low-weight child by the absorbent core.

In the disposable diaper for such a low-weight child, the second folding guiding portion is located at the central portion of the narrow portion in the longitudinal direction, and the first folding guiding portion is the narrow in the longitudinal direction. The third folding guiding portion is located on the one side of the center of the center and the center of the one side, and the third fold guiding portion is the other than the center of the center of the narrow portion in the longitudinal direction and the center of the other side It is a disposable diaper for low weight infants characterized by being located at the side.

In the disposable diaper for such a low-weight child, at least one of the first folding guiding portion and the third folding guiding portion is a portion where the width of the absorbent core starts to narrow in the narrow portion. It is a disposable diaper for underweight children characterized by being located.

According to such a disposable diaper for low-weight children, the low-weight children can be fitted so that their legs can be raised to a position where both knees stick to the abdomen. In addition, the outline of the narrow portion becomes steeper, the width of the absorbent core becomes narrower in a wider range in the longitudinal direction, and the leg of the low-weight child can be easily pulled up.

It is a disposable diaper for such a low weight child, and the above-mentioned absorptive core is symmetrical in the longitudinal direction, and it is a disposable diaper for a low weight child.

A disposable diaper for such a low-weight child, comprising: a pair of first side flaps extending to both outer sides in the width direction on one side in the longitudinal direction and to which a fastening tape is fixed; The other side includes a pair of second side flaps extending to both outer sides in the width direction, and from the one side in the longitudinal direction, the first folding guiding portion, the second folding guiding portion, The third folding guiding portion is positioned, and the first folding guiding portion, the second folding guiding portion, and the third folding guiding portion are respectively provided on the both sides in the width direction of the absorbent core. It is a pair of notch parts which become convex in the cross direction inside, It is a disposable diaper for low weight children characterized by the above-mentioned.

According to such a disposable diaper for low-weight children, the absorbent core can be folded at the first to third fold guiding portions.

It is a disposable diaper for such low-weight children, and the apex of the notch of the first folding guiding portion is located on the other side of the other end of the fastening tape in the longitudinal direction. A disposable diaper for low-weight children.

According to such a disposable diaper for low-weight children, the first folding guiding portion is positioned at a position corresponding to the pulled-up leg without the first folding guiding portion being positioned at a position where the leg can not be pulled up.

It is a disposable diaper for such low-weight children, wherein the one end of the second side flap in the longitudinal direction is longer than the apex of the notch of the third fold guiding portion in the longitudinal direction. It is a disposable diaper for low weight children characterized by being located on the other side.

According to such a disposable diaper for low-weight children, when the part of the diaper is folded back to the non-skin side in the third fold guiding part, all of the second side flaps are folded back. Thus, it is easy to fold the diaper.

It is a disposable diaper for such a low weight child, and the length in the longitudinal direction from the top of the notch of the third fold guiding part to the other end of the absorbent core in the longitudinal direction is It is a disposable diaper for low-weight children, which is equal to or longer than the length in the longitudinal direction of the fastening tape.

According to such a disposable diaper for low-weight children, in the case where a part of the diaper is folded back to the non-skin side in the third fold guiding portion, the fastening tape is easily locked to the folded back absorbent core , Locking is stable.

It is a disposable diaper for such low-weight children, and in a state in which the disposable diaper is developed and extended in the longitudinal direction, the apex of each notch of each of the first folding guiding portion and the second folding guiding portion The length from the center in the longitudinal direction to the other end of the fastening tape in the longitudinal direction is a first length, and the vertex in the longitudinal direction from the top of the notch of the third fold guiding portion When the length to the other end of the disposable diaper is a second length, the second length is from the top of the notch of the third fold guiding portion to the one side in the longitudinal direction The separated position is a disposable diaper for a low-weight child, characterized in that the separated position is located on the one side of the center on the other side than the position separated by the first length.

According to such a disposable diaper for low-weight children, when using a part of the diaper folded back to the non-skin side in the third fold guiding part, the fastening tape is less likely to be locked to the end of the folded diaper , Locking is stable.

In this disposable diaper for low-weight children, a pair of solid gathers are disposed on both sides in the width direction of the disposable diaper, and the solid gathers extend and contract in the longitudinal direction. Allowing the elastic member to stand on the skin side, and in the longitudinal direction, the center of the stretchable portion of the elastic member for solid gathers is located on the other side of the center of the disposable diaper, It is a disposable diaper for low-weight children, which is characterized.

According to such a disposable diaper for low-weight children, the portion of the diaper on the fastening tape side is difficult to bend. Therefore, the diaper can be smoothly passed between the legs of a low-weight child with the part of the diaper on the fastening tape side in front.

In the disposable diaper for a low-weight baby, the apex of the notch of the third fold guiding portion is located on one side of the other side of the standing start point of the three-dimensional gather portion in the longitudinal direction. A disposable diaper for low-weight children.

According to such a disposable diaper for low-weight children, when the part of the diaper is folded back to the non-skin side in the third fold guiding part, the junction forming the three-dimensional gather part is largely folded back. Thus, it is easy to fold the diaper.

It is a disposable diaper for such low-weight children, and in the state where the disposable diaper is developed and extended in the longitudinal direction, the length in the longitudinal direction of the stretchable portion of the elastic member for the three-dimensional gathers portion is the first fold It is a disposable diaper for low-weight children, which is equal to or longer than the length in the longitudinal direction between the apexes of the notches of the guiding portion and the third fold guiding portion.

According to such a disposable diaper for low-weight children, the diaper is likely to be three-dimensionally shaped due to the contraction of the elastic member for three-dimensional gathers even when worn normally and when worn backward.

=== Embodiments ===
The disposable diaper for low-weight children is a diaper intended for infants of 3000 grams or less (particularly less than 2500 grams). Hereinafter, as a disposable diaper for low-weight children, an embodiment will be described by taking a tape-type disposable diaper attached to low-weight children with fastening tape as an example. However, the disposable diaper for low-weight children is not limited to the tape type, and may be, for example, a pad-type disposable diaper not provided with a fastening tape.

<< Configuration of Tape-type Disposable Diaper 1>
FIG. 1 is a plan view of a low-weight-weight tape-type disposable diaper 1 (hereinafter referred to as “diaper”) which has been developed and extended in the longitudinal direction, as viewed from the skin side. FIG. 2A is a schematic cross-sectional view of the first waist portion 1A, and FIG. 2B is a schematic cross-sectional view of the crotch portion 1B.

The diaper 1 has a longitudinal direction and a width direction. Moreover, the diaper 1 has the 1st waist part 1A, the crotch part 1B, and the 2nd waist part 1C along with the longitudinal direction. As shown to FIG. 2A, the direction where each member which comprises the diapar 1 was laminated | stacked is called thickness direction. In the thickness direction, the side in contact with the wearer is called the skin side, and the other side is called the non-skin side.

The diaper 1 comprises an absorbent core 2 for absorbing waste fluid, a liquid-permeable top sheet 3 disposed on the skin side of the absorbent core 2, and a liquid disposed on the non-skin side of the absorbent core 2. From the both sides in the width direction of the exterior sheet 5 which is disposed on the non-skin side of the impervious leak-barrier sheet 4 and the leak-barrier sheet 4 and forms the outer shape of the diaper 1 It has a pair of extending side sheets 6.

As the absorbent core 2, one obtained by forming a liquid absorbent fiber such as pulp fiber containing a high absorbent polymer (so-called SAP) into a predetermined shape, or SAP in which an SAP layer is adhered to a hydrophilic sheet A sheet, an air-laid sheet etc. which shape | molded the liquid absorptive fiber in the sheet form by the air-laid method can be illustrated. The absorbent core 2 may be coated with a core wrap sheet 2A such as liquid permeable tissue paper or non-woven fabric.

A pair of solid gathers 8 and a pair of leg elastics 10 that extend and contract in the longitudinal direction along the circumference of the wearer's leg are disposed on both sides in the width direction of the diaper 1. In the solid gather section 8, a part of the side sheet 6 is erected on the skin side by the solid gather section elastic member 9 that expands and contracts in the longitudinal direction. The solid gatherer 8 blocks excrement.

The leg elastic members 10 are disposed outside in the width direction of the rising start point of the three-dimensional gather portion 8 in the width direction (width direction inner end 42 a of the second joint portion 42 shown in FIG. 5 described later). By the leg elastics 10, the diaper 1 fits around the legs of the wearer and the leakage of excrement is suppressed.

As the elastic member 9 for solid gathers and the leg elastic member 10, a thread-like elastic member such as thread rubber can be exemplified. However, not only this but sheet-like elastic members, such as an elastic film, may be sufficient.

The solid gatherer elastic member 9 and the leg elastic member 10 each have a stretchable portion (effective length portion) in which stretchability is developed in the longitudinal direction. Of the elastic member 9 for a three-dimensional gather portion and the leg elastic member 10, a portion fixed to the sheet in a state of being extended in the longitudinal direction becomes an elastic portion. Only the stretchable parts are shown in the drawing.

Moreover, the external shape of the diaper 1 in the unfolded state is a substantially hourglass shape. The first waist portion 1A has a pair of first side flaps 31 extending on both sides in the width direction than the crotch 1B on one side in the longitudinal direction and to which the fastening tape 7 is fixed. The second waist portion 1C has, on the other side in the longitudinal direction, a pair of second side flaps 32 extending to both lateral sides in the width direction than the crotch portion 1B. The first side flaps 31 and the second side flaps 32 are formed by the side sheet 6 and the exterior sheet 5.

The fastening tape 7 has a tape base 7A and a hook material 7B. The tape substrate 7A has a substantially rectangular shape elongated in the width direction. The hook material 7B is, for example, a male member of a surface fastener, and is provided on the skin side surface of the tape base 7A.

At the time of wearing the diaper 1, the unfolded diaper 1 is folded in half at the approximate center in the longitudinal direction while being applied to the wearer. Next, the first side flaps 31 are folded back inward. Finally, the hook material 7B of the fastening tape 7 is locked to the non-skin side of the second waist portion 1C.

Moreover, the diaper 1 is for low weight children. Therefore, the length in the longitudinal direction of the diaper 1 in the state in which the diaper 1 is expanded and stretched in the longitudinal direction may be about 175 mm to 330 mm. Specifically, the product length for body weight less than 2500 g may be 310 mm, the product length for body weight less than 1500 g may be 270 mm, and the product length for body weight less than 1000 g may be about 230 mm.

Further, the waist size of the diaper 1 may be about 160 to 295 mm. Specifically, the waist size for a body weight less than 2500 g may be 273.5 mm, and the waist size for a body weight less than 1500 g may be about 220 mm. In the waist size, the product was stretched in the width direction without causing the end in the width direction of one fastening tape 7 to the end on the base side in the width direction of the hook material 7B included in the other fastening tape 7 It is the dimension in the state.

<< Back and reverse wearing of diaper 1 >>
3A to 3C are explanatory views of the attached state of the diaper 1. Among low-weight children, especially low-weight children who give birth at less than 2500 grams have the view that it is desirable to spend in a posture when they are in the womb. The posture when in the womb means that the back is C-shaped as shown in FIG. 3A and the legs are M-shaped as shown in FIG. 3C while both knees are attracted to the abdomen. The situation is Hereinafter, such a posture is also referred to as "a bent posture after bending".

In addition, there is a concept of minimal handling where it is desirable not to touch the body of a low weight child as much as possible.

Therefore, when replacing the diaper 1, the diaper 1 may be passed between the legs of a low weight child lying flat and the diaper 1 replaced for a low weight child lying flat without putting the low weight child on its back . Therefore, as shown in FIG. 3A, the first waist portion 1A provided with the fastening tape 7 is not only mounted normally so as to cover the back side, but also as shown in FIG. 3B, the first waist portion 1A. There is a case where a back and forth reverse wearing is performed so as to cover the ventral side. In the case of back and forth wearing, it is not necessary to put a hand under the abdomen of a low-weight child who is lying down to lock or remove the fastening tape 7.

Moreover, it is good for the diaper 1 to be provided with the tearing-out line 11 for cutting off a part of 1st waistline part 1A to which the fastening tape 7 is fixed. By doing so, removal of the diaper 1 from a low weight child becomes easy.

<< Shape of Absorbent Core 2 >>
4 and 5 are schematic plan views of the diaper 1. FIG. 6 is a plan view of the absorbent core 2. FIG. 7 is a schematic plan view of the diaper 1 of the modification. FIG. 8A to FIG. 8C are explanatory views of a method of mounting the diaper 1 on a low-weight child smaller than the mounting target. In the following description, in the longitudinal direction, one side on which the fastening tape 7 is disposed is also referred to as "tape side", and the other side opposite thereto is also referred to as "non-tape side". Moreover, the state which the diapar 1 extended | stretched in the longitudinal direction is the state which the diapar 1 extended | stretched to the longitudinal direction so that the wrinkles which have arisen in the diapar 1 might not be visually recognized substantially. Specifically, the diaper 1 is in a stretched state until the dimension in the longitudinal direction of each member (for example, the side sheet 6 etc.) constituting the diaper 1 matches or approximates to the dimension in the longitudinal direction of that member alone. .

As shown in FIG. 3C, the crotch portion of the low-weight baby whose legs are pulled up abuts on a portion closer to one side in the longitudinal direction than the central portion in the longitudinal direction of the diaper 1. Specifically, for a low-weight child who is lifting his / her leg in the back, it is preferable that the diaper 1 has a break starting point at a position (F1) at which the leg starts to rise from the buttocks in contact with the floor. In addition, it is preferable that there is a break starting point of the diaper 1 also at the position (F2) of the groin on the ventral side of the leg being pulled up. By doing so, the portion (F1 to F2) of the diaper 1 in contact with the crotch of a low-weight child becomes the bottom, and the diaper 1 is likely to be deformed in three dimensions.

In particular, when the diaper 1 has the elastic member 9 for a three-dimensional gather portion or the leg elastic member 10, the diaper 1 is formed three-dimensionally in a round shape with the skin side inside by the contraction of both

elastic members

9 and 10. Therefore, the diaper 1 fits the posture of a low-weight child whose back is rounded in a C-shape.

For that purpose, as shown in FIG. 4, the absorbent core 2 of the present embodiment has a first folding guiding portion 21a, a second folding guiding portion 21b, and a third folding guide which guide the sheet so as to bend along the width direction. The portions 21c are provided at different positions in the longitudinal direction. The first folding guiding portion 21a, the second folding guiding portion 21b, and the third folding guiding portion 21c are located in order from the tape side in the longitudinal direction.

Therefore, when the diaper 1 is usually attached, the portion of the absorbent core 2 between the second fold induction portion 21b and the third fold induction portion 21c is the crotch portion of a low weight child whose leg is pulled up to the non-tape side. To fit. That is, the absorbent core 2 is broken at the second folding guiding portion 21b and the third folding guiding portion 21c, and the diaper 1 is three-dimensionally deformed so as to follow the low-weight child whose leg is pulled up to the non-tape side.

On the other hand, when the diaper 1 is reverse-mounted, the portion of the absorbent core 2 between the first fold induction portion 21a and the second fold induction portion 21b is the crotch portion of a low weight baby whose leg is pulled up to the tape side. To fit. That is, the absorbent core 2 is broken at the first folding guiding portion 21a and the second folding guiding portion 21b, and the diaper 1 is three-dimensionally deformed so as to follow the low-weight child whose leg is pulled up to the tape side.

Thus, the diaper 1 of the present embodiment fits a low-weight child who takes a posture when in the womb, both when worn normally and when worn backwards and backwards. Therefore, it is possible to suppress the leakage of waste fluid. Also, low-weight children are less likely to move and have edema. Therefore, according to the diaper 1 of the present embodiment which fits to the posture of a low-weight child, unnecessary tightening is eliminated, and the occurrence of further edema can be prevented.

In the absorbent core 2 according to the present embodiment, a pair of notches 22a protruding inward in the width direction is formed on both sides in the width direction of the absorbent core 2 as the first to third fold guiding portions 21a to 21c. 22c is provided. The pair of notches 22a to 22c have symmetrical shapes with respect to a center line (not shown) that bisects the absorbent core 2 in the width direction, and are arranged symmetrically. The notch portions 22a to 22c are not limited to the mountain shape shown in FIG. 5, and may be, for example, a rectangular shape or a cut line.

In the notches 22a to 22c, the basis weight (g / cm ² ) of a member (such as a liquid absorbent fiber) constituting the absorbent core 2 is lower than that of the surrounding area, or the absorbent core 2 There is no member that constitutes Therefore, at the portion of the absorbent core 2 provided with the pair of notches 22a to 22c, the absorbent core 2 is easily bent along the width direction due to the difference in rigidity with the surrounding region.

However, the present invention is not limited to the formation of the first to third fold guiding portions 21a to 21c by the notches 22a to 22c. For example, the absorbent core 2 may be bent along the width direction in a manufacturing process, or the basis weight of members constituting the absorbent core 2 may be reduced along the width direction, or the width direction of the absorbent core 2 may be reduced. The first to third fold guiding portions 21a to 21c may be formed by forming slits along the width direction in the central portion of the sheet.

In addition, the arrangement of the first to third fold guiding portions 21a to 21c may be as follows.
As shown in FIG. 4, the second folding guiding portion 21 b may be located at the center CL <b> 1 of the diaper 1 in the longitudinal direction. In addition, the center CL1 of the diaper 1 is not limited to the top of the notch 22b of the second folding guide 21b, and any portion of the notch 22b may be positioned.

And it is good for the 1st folding guidance part 21a and the 3rd folding guidance part 21c to be located symmetrically with respect to center CL1 of diaper 1 in a longitudinal direction. That is, the length from the center CL1 of the diaper 1 to the apex of the notch 22a of the first folding guiding portion 21a and the length from the center CL1 of the diaper 1 to the apex of the recess 22c of the third folding guiding portion 21c are It should be equal.

By doing so, there is no difference between when the diaper 1 is usually worn and when it is worn backwards, and the diaper 1 fits a low-weight child.

Furthermore, the first folding guiding portion 21a is located at the center CL2 of the center CL1 of the diaper 1 in the longitudinal direction and the end 1a on one side of the diaper 1, and the third folding guiding portion 21c is of the diaper 1 in the longitudinal direction. It is good to be located in the center CL3 of the center CL1 and the other end 1b of the diaper 1. In addition, not only the vertexes of the

notches

22a and 22c of the first and third

folding guiding portions

21a and 21c are located at the respective points CL2 and CL3 of the diaper 1, but any portion of the

notches

22a and 22c Should just be located.

In other words, the first folding guiding portion 21a and the third folding guiding portion 21c may be located apart from the center CL1 of the diaper 1 by a quarter of the product length of the diaper 1. By doing so, the absorbent core 2 can be folded at a position corresponding to the ventral base (F2 in FIG. 3C) of the leg pulled up to a position where both knees stick to the abdomen. Thus, the diaper 1 is three-dimensionally deformed so as to fit a low-weight child who takes a posture when in the womb.

Further, as shown in FIG. 6, the absorbent core 2 of the present embodiment has a narrow portion 2 </ b> A that is narrower than the end portion at the central portion in the longitudinal direction. The first folding guiding portion 21a, the second folding guiding portion 21b, and the third folding guiding portion 21c are located in the narrow portion 2A.

This makes it easier to lift the legs of low-weight children. Further, the width of the absorbent core 2 between the first and second

fold induction parts

21a and 21b is narrowed, and the width of the absorbent core 2 between the second and third

fold induction parts

21b and 21c is narrowed. There is. That is, the width of the absorbent core 2 with which the crotch of a low weight child abuts is narrowed. Therefore, low-weight children can move their legs easily. In addition, when the legs of a low-weight child are closed, it is possible to suppress pressure on the skin of the low-weight child by the highly absorbent core 2.

Specifically, the second folding and guiding portion 21b may be located at the central portion of the narrow portion 2A in the longitudinal direction. And it is good for the 1st folding guidance part 21a to be located in one side rather than central CL4 of center CL4 of narrow part 2A in the longitudinal direction, and end 2A1 of one side of narrow part 2A. Conversely, the third folding / guiding portion 21c may be located on the other side of the center CL4 of the narrow portion 2A in the longitudinal direction and the center CL6 of the other end 2A2.

In other words, it is preferable that the first folding guiding portion 21a and the third folding guiding portion 21c be separated from the center CL4 of the narrow portion 2A by at least 1/4 the length L2 of the narrow portion 2A. By doing so, the absorbent core 2 can be folded at a position corresponding to the ventral base (F2 in FIG. 3C) of the leg pulled up to a position where both knees stick to the abdomen. Thus, the diaper 1 is three-dimensionally deformed so as to fit a low-weight child who takes a posture when in the womb.

Furthermore, in the narrow width portion 2A, the first folding guiding portion 21a and the third folding guiding portion 21c are preferably located at a position where the width of the absorbent core 2 starts to narrow, ie, the longitudinal direction of the narrow width portion 2A. It should be located at the end of the By doing so, the diaper 1 is three-dimensionally deformed so as to fit a low-weight child whose legs are raised so that both knees stick to the abdomen.

In this case, a part of each of the

notches

22a and 22c of the first and third

fold guiding portions

21a and 21c is formed by the outline 2A3 of the narrow portion 2A inclined inward in the width direction. Therefore, the inclination of the outline 2A3 becomes steep. Therefore, in a wider range in the longitudinal direction, the width of the absorbent core 2 can be narrowed, and the leg of the low-weight child can be easily pulled up.

Each length L3 from the center CL4 of the absorbent core 2 in the longitudinal direction to the end 2A1 on one side of the narrow portion 2A and the other end 2A2 is 22 of the longitudinal length L1 of the absorbent core 2 It is preferable that the length is% or more (L3 ≧ L1 × 0.22).

As described above, the long narrow portions 2 </ b> A extend to both outer sides in the longitudinal direction, so that it is easy to pull up the leg of the low-weight child even when the diaper 1 is usually worn or worn backwards. In other words, the narrow portion 2A can be brought into contact with the crotch of a low-weight child whose legs can be raised so that both knees stick to the abdomen, and the absorbent core 2 compresses the skin of the low-weight child Can be suppressed.

Further, as shown in FIG. 6, both side ends 2a in the width direction of the narrow portion 2A may have straight portions 2A4 along the longitudinal direction. In this case, for example, the width of the absorbent core 2 can be narrowed over a wider range in the longitudinal direction, as compared to the case where the side end of the narrow portion has an arc shape that is convex inward in the width direction. Therefore, a narrower narrow portion 2A is located at the crotch of a low weight child whose legs can be pulled up, and the absorbent core 2 can be used to suppress pressure on the skin of the low weight child.

In addition, the straight portions 2A4 may be provided on both sides in the longitudinal direction with respect to the center CL4 in the longitudinal direction of the absorbent core 2. In this case, the leg can be easily pulled up even when the diaper 1 is normally worn or reversely worn, and the absorbent core 2 can be used to suppress pressure on the skin of a low-weight baby.

The width W1 of the absorbent core 2 of the second folding guide portion 21b (that is, the width between the apexes of the pair of notches 22b) and the width W2 of the absorbent core 2 in the linear portion 2A4 are 15 mm or more and 45 mm or less It is good to have a degree. By doing so, it is possible to suppress the pressure on the skin of a low-weight child with the absorbent core 2 while securing the absorption capacity of the absorbent core 2.

Further, by lengthening the narrow portion 2A, as shown in FIG. 1, the indicator 12 whose color changes due to urination can be accommodated in the narrow portion 2A. The indicator 12 easily reacts in the narrow portion 2A. Therefore, the indicator 12 can be reacted even with low urine weight of low-weight children, and it becomes easy to understand the replacement time of the diaper 1.

However, when the diaper 1 is reversely mounted (see FIG. 3B), temporarily, if the leg is pulled up beyond the locking position p1 of the fastening tape 7, the first side flap to which the fastening tape 7 is fixed As a result, the fastening tape 7 is easily removed. Therefore, as shown in FIG. 4, it is preferable that the tape-side end 2A1 of the narrow portion 2A be located below (non-tape side) than the lower end 7a (non-tape side end 7a) of the fastening tape 7 . Thus, the absorption capacity of the absorbent core 2 can be secured by not making the narrow portions 2A unnecessarily long.

For the same reason, it is preferable that the apex 22a1 of the notch 22a of the first folding guiding portion 21a is also located below the non-tape side of the lower end 7a of the fastening tape 7. By doing so, the first folding guiding portion 21a is located at a position corresponding to the root (F2 in FIG. 3C) of the raised leg without the first folding guiding portion 21a being located at a position where the leg can not be pulled up. Is located.

In addition, the absorptive core 2 does not need to have the narrow part 2A. For example, the first to third fold guiding portions 21a to 21c may be provided to the absorbent core 2 having a rectangular shape in a plan view.

As described above, the absorbent core 2 of the present embodiment has a symmetrical shape with respect to the center CL4 in the longitudinal direction. Therefore, the fold guide portions (21a, 21c) are provided on both sides in the longitudinal direction with respect to the center CL4 in the longitudinal direction of the absorbent core 2, or the linear portions 2A4 of the absorbent core 2 are provided. Therefore, there is no difference between when the diaper 1 is usually worn and when it is worn backwards, and the diaper 1 fits with low-weight children.

In addition, back and forth reverse wearing is performed when replacing the diaper 1 without moving a low weight child who is lying down. Therefore, in the case of reverse mounting, the diaper 1 is passed between the legs of a low-weight child with a flat bottom, with the first waist part 1A side to which the fastening tape 7 is fixed facing forward. Moreover, compared with the leg elastic member 10, the elastic member 9 for a three-dimensional gather portion located inside in the width direction has a greater influence on the deformation of the diaper 1 when it is bent.

Therefore, as shown in FIG. 4, in the longitudinal direction, the center 9 CL of the stretchable portion of the elastic member 9 for solid gathers may be located closer to the non-tape side than the center CL 1 of the diaper 1. By doing so, the first waist part 1A on the tape side is less likely to be curved than the second waist part 1C on the non-tape side, and tends to be maintained in a flat shape. Therefore, at the time of back and forth wearing, the first waist part 1A can be smoothly passed between the legs of a low-weight child who is lying down, and the diaper 1 can be easily put on.

Further, in the narrow width portion 2A, the length of the sheet portion around the legs from the side end of the absorbent core 2 in the width direction to the side end of the diaper 1 is long, so the standing height of the solid gather portion 8 can be secured. Therefore, the length of the narrow portion 2A in the longitudinal direction may be longer than the length of the stretchable portion of the solid gathers elastic member 9 in the state where the diaper 1 is developed and stretched in the longitudinal direction.

By doing so, the narrow portion 2A can be disposed over the long range of the solid gathers elastic member 9, and the solid gathers 8 can be erected more reliably. Therefore, the waste fluid can be blocked by the three-dimensional gatherer 8.

Further, as in the diaper 1 of the modified example shown in FIG. 7, in the state where the diaper 1 is developed and extended in the longitudinal direction, the length L4 of the longitudinal direction of the stretchable portion of the elastic member 9 for solid gathers is first folded The length L5 in the longitudinal direction between the apexes (22a1 to 22c1) of the

notches

22a and 22c of the guiding part 21a and the third folding guiding part 21c may be longer than or equal to L5 (L4 ≧ L5).

By doing so, it is possible to arrange the elastic member 9 for a three-dimensional gather portion over the long range of the first folding guiding portion 21a to the third folding guiding portion 21c. Therefore, when normally mounted, the second and third

folding guiding portions

21b and 21c are the bottom, and when reversely mounted, the first and second

folding guiding portions

21a and 21b are the bottom. By the contraction of the long elastic member 9 for a three-dimensional gather portion, the diaper 1 can be formed round and three-dimensionally. Therefore, the diaper 1 fits with the posture of a low-weight child whose back is rounded in a C-shape.

By the way, the diaper 1 may be used also for a low-weight child smaller than the target size of the diaper 1. In that case, as shown in FIG. 8A, with the third folding guiding portion 21c as the folding position FL1, the second waist part 1C is folded back to the non-skin side to make the state of FIG. 8B. When the diaper 1 in the state of FIG. 8B is placed on the wearer, the diaper 1 is folded in two, with the approximate center of the first folding guiding portion 21a and the second folding guiding portion 21b as the folding position FL2. Then, as shown in FIG. 8C, the first side flaps 31 are folded inward, and the fastening tape 7 is engaged with the skin side surface of the second waist portion 1C.

Also in this case, the absorbent core 2 is broken at the first folding guide portion 21a and the second folding guide portion 21b to be the bottom, and the diaper 1 is three-dimensionally deformed by fitting to the crotch portion of a low-weight baby. Moreover, since the diaper 1 has the three fold induction parts 21a to 21c, it is easy to fold the part of the diaper 1 to the non-skin side by the third fold induction part 21c, and is used also for low weight children smaller than the target size. It can be said that it is easy. Assuming such a method of use, the diaper 1 preferably has the following features.

As shown in FIG. 5, in the longitudinal direction, a length L6 from the apex 22c1 (folding position FL1) of the notch 22c of the third folding guiding portion 21c to the end 2c on the non-tape side of the absorbent core 2 is It is preferable that the length L7 in the longitudinal direction between the apexes (22b1 to 22c1) of the

notches

22b and 22c of the second folding guiding portion 21b and the third folding guiding portion 21c be shorter (L6 <L7).

By doing so, the absorbent core 2 folded back to the non-skin side at the apex 22c1 (folding position FL1) of the notch 22c of the third folding guiding portion 21c is the same as that of the notch 22b of the second folding guiding portion 21b. It does not overlap with the vertex 22b1 in the thickness direction. Therefore, it is possible to prevent the fold of the absorbent core 2 in the second fold guiding part 21b from being inhibited by the absorbent core 2 folded back to the non-skin side. Therefore, the diaper 1 deforms in three dimensions so as to fit a low-weight child.

Also, the tape-side end (root) 32a of the second side flap 32 in the longitudinal direction is on the non-tape side (longitudinal direction) than the apex 22c1 (folding position FL1) of the notch 22c of the third folding guiding portion 21c. It is good to be located outside).

By doing so, all of the second side flaps 32 are folded back to the non-skin side. Therefore, the second waist portion 1C can be easily folded back to the non-skin side at the folding position FL1. In addition, it is possible to prevent a part of the second side flap 32 from being folded back to the non-skin side and overlapping with the remaining part, thereby causing a part with high rigidity. Thus, it is possible to prevent the skin of a low-weight child from being stimulated at the highly rigid portion of the second side flap 32.

The tape-side end 32 a of the second side flap 32 is a portion of the outer edge of the diaper 1 that inclines inward in the width direction toward the tape side in the longitudinal direction, along the longitudinal direction or in the opposite direction It is a boundary point with the inclined part. The tape-side end 32a of the second side flap 32 can also be said to be the point at which the width of the diaper 1 becomes the narrowest.

In addition, the length L6 in the longitudinal direction from the apex 22c1 (folding position FL) of the notch 22c of the third folding guiding portion 21c to the end 2c on the non-tape side of the absorbent core 2 in the longitudinal direction is the fastening tape 7 It is preferable that the width L2 be greater than or equal to L8 (L6 ≧ L8).

By doing so, the width L6 of the absorbent core 2 folded back to the non-skin side becomes equal to or more than the width L8 of the fastening tape 7. Therefore, as shown to FIG. 8C, the fastening tape 7 is easy to be latched by the highly rigid area | region on the absorptive core 2 folded back to the non-skin side. Thus, for example, the fastening of the fastening tape 7 is stabilized and the fastening tape 7 is less likely to be detached, as compared with the case where the fastening tape 7 is fastened in the region of low rigidity of only the sheet.

Moreover, in the state (FIG. 5) which the diaper 1 expand | deployed and expand | extended to the longitudinal direction (FIG. 5), the longitudinal direction of vertex 22a1, 22b1 of each

notch

22a, 22b of 1st folding guidance part 21a and 2nd folding guidance part 21b It has a length L9 (first length) from the center CL7 (folding position FL2) to the non-tape side end 7a of the fastening tape 7 in the longitudinal direction. Moreover, the diaper 1 has length L10 (2nd length) from the vertex 22c1 of the notch 22c of the 3rd folding guidance part 21c to the edge 1b at the side of the non-tape of the diaper 1 in a longitudinal direction.

In the longitudinal direction, a position p2 away from the apex 22c1 of the notch 22c of the third fold guiding portion 21c from the apex 22c1 toward the tape by the length L10 is the position of the end 1b of the diaper 1 folded back to the non-skin side (FIG. 8C) reference). A position p3 away from the center CL7 (folding position FL2) of the first folding guiding portion 21a and the second folding guiding portion 21b toward the non-tape side by a length L9 is an approximate locking position p3 of the end 7a of the fastening tape 7 (See FIG. 8C).

Therefore, in the state where the diaper 1 is expanded and elongated in the longitudinal direction (FIG. 5), the position p2 of the end 1b of the diaper 1 folded back to the non-skin side is closer to the tape than the locking position p3 of the fastening tape 7 It is good to do. That is, it is preferable that the position p2 of the end 1b of the diaper 1 folded back to the non-skin side be located below the locking position p3 of the fastening tape 7 in the attached state (FIG. 8C) of the diaper 1.

By doing so, the fastening tape 7 is difficult to be locked across the end 1 b of the diaper 1. That is, the fastening tape 7 is unlikely to be locked at the boundary between the portion of the diaper 1 folded back to the non-skin side and the portion of the diaper 1 not folded back. Thus, the locking of the fastening tape 7 is stabilized, and the fastening tape 7 is less likely to be detached.

Further, as shown in the right half of the diaper 1 of FIG. 5, the solid gather section 8 is formed by a joint section 40 in which the side sheet 6 is joined to the top sheet 3 with an adhesive or the like. The joint portion 40 extends from the first joint portion 41 disposed at both ends in the longitudinal direction of the diaper 1 to one end 1 a of the diaper 1 in the longitudinal direction to the other end 1 b, and in the width direction than the first joint portion 41. And a second joint 42 disposed outside of

Position p4 of the longitudinal direction of end 41a by the side of a tape of the 1st joined part 41 arranged at the end of diaper 1 by the side of a non-tape serves as a rising starting point by the side of non-tape of solid gathers part 8. The adhesive cures at the joint portion 40 (41, 42), and the rigidity is higher than that of the surrounding area. Therefore, the apex 22c1 of the notch 22c of the third folding guiding portion 21c may be located closer to the tape than the non-tape side rising starting point (p4) of the solid gathers portion 8.

By doing so, all the non-tape side first joint portions 41 are folded back to the non-skin side. Therefore, as compared with the case where the diaper 1 is folded back in the middle of the rigid first joint portion 41, the diaper 1 can be easily folded. Moreover, the skin of a low weight child smaller than the target size of the diaper 1 is weaker. Therefore, the contact area between the high-rigidity joint 40 and the low-weight child is reduced by folding back all the high-rigidity first joints 41, and the burden on the low-weight child's skin can be reduced.

As mentioned above, although embodiment of this invention was described, said embodiment is for making an understanding of this invention easy, and is not for limiting and interpreting this invention. Further, it goes without saying that the present invention can be modified or improved without departing from the gist thereof, and that the present invention includes equivalents thereof.

For example, not only a tape-type diaper but also a pad-type diaper, three fold guiding parts may be provided in the absorbent core. In this case, the nurse or the like can wear the diaper without confirming which side in the longitudinal direction the notch portion is disposed. That is, it is not necessary to be aware of the longitudinal direction of the diaper.

1 diaper (disposable diaper for low weight children),
1A first waist, 1B crotch, 1C second waist,
2 Absorbent core, 2A narrow part,
21a first folding guide, 21b second folding guide,
21c third folding guide portion 22a to 22c notched portion
3 top sheet, 4 leakproof sheet,
5 exterior sheets, 6 side sheets, 7 fastening tapes,
8 solid gathers, 9 solid gathers elastic members,
10 elastic legs, 11 tear lines, 12 indicators,
31 first side flaps, 32 second side flaps,
40 joints, 41 first joints, 42 second joints

Claims

Has a longitudinal direction and a width direction,
A disposable diaper for low weight children comprising an absorbent core,
The absorbent core has, at different positions in the longitudinal direction, a first fold guiding portion, a second fold guiding portion, and a third fold guiding portion for guiding the bending along the width direction. , A disposable diaper for low-weight children.
It is a disposable diaper for low weight children according to claim 1, wherein
The second fold guiding portion is located at the center of the disposable diaper in the longitudinal direction,
The disposable diaper for a low weight child, wherein the first folding guiding portion and the third folding guiding portion are located symmetrically with respect to the center of the disposable diaper in the longitudinal direction.
The disposable diaper for a low-weight child according to claim 1 or 2,
The second fold guiding portion is located at the center of the disposable diaper in the longitudinal direction,
The first fold guiding portion is located at the center of the center and one end of the disposable diaper in the longitudinal direction,
The disposable diaper for a low weight child, wherein the third fold guiding part is located at the center of the center and the other end of the disposable diaper in the longitudinal direction.
It is a disposable diaper for low weight children according to any one of claims 1 to 3,
The absorbent core has a narrow portion which is narrower than the end portion at the central portion in the longitudinal direction,
The disposable diaper for a low weight child, wherein the first folding guiding portion, the second folding guiding portion, and the third folding guiding portion are located at the narrow width portion.
It is a disposable diaper for low weight children according to claim 4, wherein
The second fold guiding portion is located at a central portion of the narrow portion in the longitudinal direction,
The first folding guiding portion is located on the one side of the center of the narrow portion in the longitudinal direction and the center of one end of the narrow portion,
The disposable diaper for a low-weight child, wherein the third folding guiding portion is positioned on the other side of the center of the narrow portion in the longitudinal direction and the center of the other end.
The disposable diaper for a low weight child according to claim 5, wherein
At least one of the first folding guiding portion and the third folding guiding portion is located at a portion where the width of the absorbent core starts to narrow in the narrow width portion. Disposable diapers for children.
It is a disposable diaper for low weight children according to any one of claims 1 to 6,
The disposable diaper for low-weight children, wherein the absorbent core has a symmetrical shape in the longitudinal direction.
It is a disposable diaper for low weight children according to any one of claims 1 to 7, wherein
A pair of first side flaps which extend on both outer sides in the width direction on one side in the longitudinal direction and to which fastening tapes are fixed;
A pair of second side flaps extending on both outer sides in the width direction on the other side in the longitudinal direction;
The first folding guiding portion, the second folding guiding portion, and the third folding guiding portion are located in order from the one side in the longitudinal direction,
Each of the first folding guiding portion, the second folding guiding portion, and the third folding guiding portion is a pair of convex inwards in the width direction on both sides in the width direction of the absorbent core. A disposable diaper for low-weight children, characterized in that it is a notch.
The disposable diaper for a low-weight child according to claim 8, wherein
The top of the notch of the first folding guiding portion is located on the other side of the other end of the fastening tape in the longitudinal direction, characterized in that it is a disposable for low-weight children Diapers.
The disposable diaper for a low-weight child according to claim 8 or 9,
The end on the one side in the longitudinal direction of the second side flap is located on the other side in the longitudinal direction with respect to the vertex of the cutout portion of the third fold guiding portion. Disposable diapers for underweight children.
A disposable diaper for a low weight child according to any one of claims 8 to 10, wherein
The length in the longitudinal direction from the vertex of the notch of the third fold guiding portion to the other end of the absorbent core in the longitudinal direction is the length in the longitudinal direction of the fastening tape or more And a disposable diaper for low-weight children.
It is a disposable diaper for low weight children according to any one of claims 8 to 11, wherein
With the disposable diaper deployed and stretched in the longitudinal direction,
The length from the center in the longitudinal direction of the apexes of the notches of the first folding guiding portion and the second folding guiding portion to the other end of the fastening tape in the longitudinal direction is a first Length,
When the length from the vertex of the notch of the third folding guiding portion to the other end of the disposable diaper in the longitudinal direction is a second length,
In the longitudinal direction, the position separated by the second length from the vertex of the notch of the third fold guiding part to the one side is the position separated by the first length from the center to the other side It is located on the said one side rather than, The disposable diaper for low weight children characterized by the above-mentioned.
A disposable diaper for low-weight children according to any one of claims 8 to 12, wherein
A pair of solid gather sections are disposed on both sides in the width direction of the disposable diaper,
The three-dimensional gather portion can stand on the skin side by an elastic member for three-dimensional gather portion that expands and contracts in the longitudinal direction.
In the longitudinal direction, the center of the stretchable portion of the elastic member for a three-dimensional gathers portion is located on the other side of the center of the disposable diaper.
It is a disposable diaper for low weight children according to claim 13.
In the longitudinal direction, the apex of the notch of the third folding guiding portion is located on one side of the other side of the standing portion on the other side of the solid gather portion, for low-weight children Disposable diapers.
A disposable diaper for a low-weight child according to claim 13 or 14.
With the disposable diaper deployed and stretched in the longitudinal direction,
The length in the longitudinal direction of the stretchable portion of the elastic member for the three-dimensional gathers portion is equal to or longer than the length in the longitudinal direction between the apexes of the notches of the first and third fold guiding portions. A disposable diaper for low-weight children, characterized in that