TW201637632A - Disposable diaper - Google Patents

Abstract

The purpose of the present disclosure is to provide a disposable diaper having, when worn, a shape conforming to the three-dimensional body shape of a wearer. The diaper according to the present disclosure has the following structure. The disposable diaper (1) comprises a liquid permeable layer (2), a liquid impermeable layer (3), and a predetermined absorbent layer (4), is divided into a front waist region (FW), a rear waist region (RW), and a front crotch region (FC) and a rear crotch region (RC) therebetween, and is characterized in that: in the front crotch region (FC) of the absorbent layer (4), the disposable diaper (1) has a first bending guide line (6) formed between a longitudinal axis line (LA) and one side edge (5a) in the front crotch region (FC) of the absorbent layer (4) and extending in the direction of the longitudinal axis line (LA), and a second bending guide line (7) formed between the longitudinal axis line (LA) and the other side edge (5b) and extending in the direction of the longitudinal axis line (LA); each of the first bending guide line (6) and the second bending guide line (7) includes compressed parts, grooves, or slits on at least the absorbent layer (4); and the disposable diaper (1) has compressed parts formed by compressing the absorbent layer (4) in a center region (15) between the first bending guide line (6) and the second bending guide line (7).

Description

Disposable disposable diaper

The present invention relates to disposable diapers.

A disposable diaper is used in order to prevent leakage of excrement while achieving a good wearing feeling, and various efforts are made.

For example, in the fifth drawing of Patent Document 1, an absorbent core chip 34 including an hourglass-type central absorbent body 34A and one side surface of the central absorbent body 34A and the side absorbent members 34B and 34B are described. In the absorptive chip 34, between the center absorber 34A and the pair of side absorbers 34B and 34B, the cut-away portions 34C and 34C are formed in a shape to be cut out.

According to Patent Document 1, it is described that when the absorptive portion 34 is provided with the excision portion 34C, both side edges of the absorptive chip 34 are easily raised, and the absorptive chip 34 is pressed in the wide direction, and absorbability is obtained. The overall width of the chip 34 is narrowed, so that it is not easy to hinder the shrinkage of the outer covering 2 in the width direction and the like.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2008-131968

However, the disposable disposable diaper described in Patent Document 1 is bent in the wide direction, and is bonded along the curve of the left and right sides of the wearer's body. However, the disposable type described in Patent Document 1 is used. Paper diapers are not designed to fit along the curve of the wearer's body.

Accordingly, it is an object of the present invention to provide a disposable disposable diaper that can be attached to the wearer's body in a three-dimensional shape in a worn state.

The inventors of the present invention have developed a disposable disposable diaper having a liquid permeable layer and a liquid-impermeable layer, and one side edge and the other side edge between the two, And the longitudinal axis, and the absorbing layer at the front end and the rear end, and are divided into: a front waist area, a back waist area, and a front sac and a sacral area between the front waist area and the back waist area. A disposable disposable diaper, wherein the disposable diaper of the absorbent layer is disposed between the longitudinal axis and one of the side edges of the absorbent layer a first bending inducing line extending in a direction of the long axis, and a second bending inducing line disposed between the long axis and the other side edge and extending in a direction of the long axis The first bending inducing line and the second bending inducing line each include at least a compression portion, a groove portion, or a slit portion of the absorption layer, and the disposable paper diaper is used in the first bending inducing line and the first In the central region between the two bending induction lines, a compression portion formed by compressing the absorption layer is provided.

The disposable disposable diaper of the present invention is attached to the three-dimensional shape of the wearer's body in a worn state.

1‧‧‧Disposable disposable diapers

2‧‧‧liquid permeable layer

3‧‧‧ liquid-impermeable layer

4‧‧‧Absorbent layer

4a‧‧‧chip film

Side edge of 5a‧‧‧

5b‧‧‧ the other side of the side

6‧‧‧1st bend induction line

7‧‧‧2nd bend induction line

8‧‧‧3rd bend induction line

9‧‧‧4th bend induction line

10‧‧‧ 蹊 抵 抵 area

11‧‧‧The area around the groin

12‧‧‧Shape portion of the roughly four-corner trapezoidal cone

13‧‧‧1st embossing department

14‧‧‧2nd embossing department

15‧‧‧Central area

16‧‧‧1st base point

17‧‧‧2nd base point

21‧‧‧1st elastic member

22‧‧‧2nd elastic member

23, 24‧‧ ‧ gap

25‧‧‧Three-dimensional ruffles

26‧‧‧Flexible components

27‧‧‧Buckle belt

28‧‧‧Low basis weight area

29‧‧‧ concave department

30‧‧‧The embossing part of the bending induction line

31‧‧‧Slit parts

F‧‧‧Predecessor

R‧‧‧Back body

FW‧‧‧ front waist area

FC‧‧‧ former shareholder territory

RW‧‧‧After waist area

RC ‧ ‧ post-share territory

LA‧‧‧ long axis

Fig. 1 is a perspective view of a disposable disposable diaper 1 according to an embodiment of the present invention.

Fig. 2 is a plan view showing the disposable disposable diaper 1 shown in Fig. 1.

Fig. 3 is a plan view showing the absorbent layer 4 of the disposable disposable diaper 1 and the die pad film 4a covering the absorbent layer 4, and the first elastic member 21 and the second elastic member 22, which are shown in Fig. 2 .

Figure 4 is a cross-sectional view taken along line IV-IV of Figure 2;

Fig. 5 is a cross-sectional view taken along line V-V of Fig. 3.

Fig. 6 is a cross-sectional view taken along the line V-V of Fig. 3, showing the absorption layer 4 and the die pad film 4a before the embossed portions 30a and 30b for bending induction lines are formed.

Figure 7 is a disposable diaper 1 for display after being shown in Figure 1. The state of wearing the state.

Fig. 8 is a view for explaining the disposable disposable diaper 1 according to another embodiment of the present invention.

Fig. 9 is a view for explaining the waist region and the femoral region of the disposable diaper for the adhesive tape type.

[definition]

This definition will be described with respect to the terms used in this patent specification.

[front end and back end]

In the present specification, the "front end" and the "rear end" of the absorbent layer refer to the end portion of the absorbent layer in the abdominal direction and the end portion of the absorbent layer in the back direction, respectively, based on the wearer.

[predecessor and back body]

In this patent specification, the "predecessor" and "rear body" are disposable diapers that are used in a straight line that extends toward the width of the disposable diaper. When the longitudinal direction of the disposable diaper is equally divided into two, the front side portion and the rear side portion are respectively.

[Waist area and stock field]

In this patent specification, "waist domain" and "share territory" have The following meaning.

(1) Disposable disposable diapers for shorts

The disposable diaper for the shorts type is formed by the waist area existing before the front body piece and the waist area after the back body piece.

The front waist region refers to a region in which the front body piece is sandwiched between the pair of the front body piece and the back body piece, and the back waist area refers to the area of the back body piece that is sandwiched between the pair of joint portions.

In addition, in the shorts type disposable disposable diapers, the squat area refers to the area between the front waist area and the back waist area, which is present in the forefoot area of the front body piece, and is present in the back body piece. The formation of the post-share sector. The above-mentioned strand field is equivalent to a region sandwiched between a pair of leg-opening portions (symbol 64 in Fig. 8).

(2) Disposable disposable diapers

In the disposable diaper for the adhesive tape type, as shown in Fig. 9, the front end 27a of the pair of fastening tapes 27 is fixed to each other at a predetermined fixing area 27b for the fastening tape. In the state, it is divided into a waist area and a strand field.

Specifically, the waist area (FW+RW), in the state of being fixed as described above, in the disposable disposable diaper 1, the waist forming member 61 of the front piece F, and the waist forming member 62 of the back piece R One of the overlaps is judged by the overlapping portion 63 as a reference. The front waist area FW refers to the front piece F of the disposable disposable diaper 1 between the pair of overlapping portions 63. region. Similarly, the back waist area RW refers to the area between the pair of overlapping portions 63 in the back body piece R of the disposable disposable diaper 1.

The stock field (FC+RC) refers to the area between the front waist area FW and the back waist area RW, which exists in the stock field FC before the front body F, and exists in the back area R after the back body piece R Formed.

The disposable diaper of the present invention will be described in detail below using the drawings as needed.

Figs. 1 to 5 and Fig. 7 are views showing a disposable disposable diaper 1 for explaining one of the embodiments (hereinafter referred to as "the first embodiment") according to the present invention. . In the first embodiment, the disposable diaper 1 according to the first embodiment is used, and the first bending induction line, the second bending induction line, the third bending induction line, and the fourth bending are used. A perspective view of a state in which the wearer is bent toward the wearer's side (the liquid-permeable layer 2 side).

Fig. 2 is a plan view showing the disposable disposable diaper 1 shown in Fig. 1. Fig. 3 is a plan view showing the absorbent layer 4 of the disposable disposable diaper 1 and the die pad film 4a covering the absorbent layer 4, and the first elastic member 21 and the second elastic member 22, which are shown in Fig. 2 . Further, Fig. 4 is a cross-sectional view taken along line IV-IV of Fig. 2, and Fig. 5 is a cross-sectional view taken along line V-V of Fig. 3. Further, Fig. 7 is a view showing the wearing state of the disposable diaper 1 after being used in the first drawing.

Further, in the first embodiment, the disposable disposable diaper 1 includes a pair of three-dimensional pleats 25 including an elastic member 26a, an elastic member 26b, and a fastening tape 27.

In the first embodiment, the disposable disposable diaper 1 includes a liquid permeable layer 2 as a surface sheet, a liquid impervious layer 3 as a back sheet, and a liquid permeable layer 2 and a liquid impervious layer. The absorbing layer 4 between the layers 3. The disposable disposable diaper 1 is divided into a front piece F and a back piece R, and the front piece F is further divided into a front waist area FW and a front field F, and the back piece R is further divided into The waist area is RW and the rear area is RC. The absorbing layer 4 includes one side edge 5a, the other side edge 5b, a long side axis LA, a front end FE, and a rear end RE.

In the first embodiment, the disposable disposable diaper 1 is disposed in the forefoot region FC of the absorbent layer 4 and disposed between the longitudinal axis LA and one of the side edges 5a and facing the long axis LA. The first bending inducing line 6 extending in the direction and the second bending inducing line 7 disposed between the long side axis LA and the other side edge 5b and extending in the direction of the long side axis LA.

In the first embodiment, the disposable disposable diaper 1 is provided with a compression portion in the central region 15 between the first bending inducing line 6 and the second bending inducing line 7 in the forefoot region FC. Specifically, the first embossed portion 13 and the second embossed portion 14 formed by compressing the absorbing layer 4 are formed.

The first embossed portion 13 and the second embossed portion 14 are linear embossed portions that extend in a direction that is not parallel or orthogonal to the direction of the longitudinal axis LA line. Further, the first embossed portion 13 and the second embossed portion 14 are not parallel.

The disposable disposable diaper of the present invention has a compression portion in the central region described above, so that the rigidity of the absorbent layer located in the central region is changed. The disposable, disposable disposable diaper has a first bending inducing line and a second bending inducing line as a base axis, and is also easily bent toward the width direction of the disposable disposable diaper and on the wearer side.

The disposable disposable diaper of the present invention is not particularly limited as long as it has a compression portion in the central region between the first bending induction line and the second bending induction line. The disposable disposable diaper of the present invention preferably has a compression portion in the central region at least in the forefoot region, and preferably has a compression portion in the forefoot region and the front waist region. Ideal. This is a disposable diaper which uses the first bending induction line and the second bending induction line as a base axis, and is easily bent toward the width direction and the wearer side.

In the disposable diaper of the present invention, the compression portion is provided in a central region closer to the distal end side than the second base point of the first bending induction line and the second base point of the second bending induction line. More ideal. This is a disposable diaper which uses the first bending induction line and the second bending induction line as a base axis, and is easily bent toward the width direction and the wearer side.

In the disposable disposable diaper of the present invention, the rigidity of the absorbent layer located in the central region described above is preferably higher than the rigidity of the absorbent layer in a region other than the central region of the absorbent layer. This is a disposable disposable diaper, and it is easy to use the first bending inducing line and the second bending inducing line as the base axis, and the disposable paper diaper is bent in the width direction and the wearer side is bent.

As a region other than the central region, a region between one side edge of the absorption layer and the first bending inducing line, a region between the other side edge of the absorption layer, and the second bending inducing line may be mentioned. .

The disposable disposable diaper of the present invention is formed in the compression portion of the central region described above, for example, an embossed portion, such as (absorbent layer), (absorbent layer and chip adhesive film), (absorbent layer, die glue) The film and the liquid permeable layer), the (absorbent layer, the die pad film, the auxiliary sheet, and the liquid permeable layer) and the like are formed, for example, by embossing.

Further, from the viewpoint of wearing feeling, it is preferable that the central portion compression portion is line-symmetrical with respect to the longitudinal axis of the absorption layer.

In the first embodiment, the first bending inducing line 6 includes a first base point 16a on the distal end FE side and a second base point 17a on the rear end RE side, and the second bending induction line 7 includes a front end The first base point 16b on the FE side and the second base point 17b on the rear end RE side.

In the direction D from the front end FE toward the rear end RE, the first bending inducing line 6 is closer to the long side axis LA as it approaches the first base point 16a, and is longer as it goes away from the first base point 16a. The distance of the side axis LA does not change much. Further, in the direction D from the front end FE toward the rear end RE, the second bending induction line 7 is closer to the long side axis LA as it approaches the first base point 16b, and is away from the first base point 16b and the long axis. The distance of LA does not change much.

By doing so, the disposable disposable diaper of the present invention is easy to be used as a disposable diaper at the first base point of the first bending induction line and the first base point of the second bending induction line. In the longitudinal direction, the wearer side is bent (it is easy to have a third bending inducing line to be described later).

The first bending inducing line 6 is closer to the long axis as it approaches the second base point 17a in the direction D from the front end FE toward the rear end RE. The line LA is further away from the long side axis LA as it goes away from the second base point 17a. Similarly, in the direction D from the front end FE toward the rear end RE, the second bending induction line 7 is closer to the long side axis LA as it approaches the second base point 17b, and becomes more distant from the second base point 17b. It is away from the long side axis LA.

By doing so, the disposable disposable diaper of the present invention is easy to be used as a disposable diaper at the second base point of the first bending induction line and the second base point of the second bending induction line. In the longitudinal direction, the wearer side is bent (it is easy to have a fourth bending induction line to be described later).

In the first embodiment, the distance D ₂ between the second base point 17a and the long side axis LA of the first bending inducing line 6 is higher than the first base point 16a and the long side axis LA of the first bending inducing line 6. The distance D _{1 is} also short. Similarly, the distance D ₂ between the second base point 17b of the second bending induction line 7 and the long side axis LA is a distance from the first base point 16b and the long side axis LA of the second bending induction line 7. D _{1 is} still short.

By doing so, the disposable disposable diaper of the present invention becomes easy to conform to the three-dimensional shape of the wearer's body, particularly the groin. It is the groin part of the wearer whose width is narrowed from the ventral side to the back side.

The distance D ₂ between the second base point 17a of the first bending inducing line 6 and the long side axis LA is shorter than the distance D ₃ between the second base point 17a and one side edge 5a, that is, the second The base point 17a is closer to the long side axis than the one side edge 5a. Similarly, the distance D ₂ between the second base point 17b of the second bending inducing line 7 and the long side axis LA is shorter than the distance D ₃ between the second base point 17b and the other side edge 5b. That is, the second base point 17b is closer to the long axis than the other side edge 5b.

By doing so, the disposable disposable diaper of the present invention becomes easy to conform to the three-dimensional shape of the wearer's body, particularly the groin.

In the first embodiment, the disposable disposable diaper 1 further includes a third bending inducing line 8 and a fourth bending inducing line 9 extending in the width direction W of the disposable disposable diaper 1. The third bending inducing line 8 includes the first base point 16a of the first bending inducing line 6 and the first base point 16b of the second bending inducing line 7, and the fourth bending inducing line 9 includes the first bending line The second base point 17a of the line 6 and the second base point 17b of the second bending line 7 are induced.

In the disposable disposable diaper of the present invention, the third bending inducing line is discarded by the first base point including the first bending inducing line and the first base point of the second bending inducing line. In the diaper, the third bending inducing line is used as the base axis, and it is easy to bend toward the longitudinal direction of the disposable diaper and to be worn on the wearer side. In the disposable diaper of the present invention, when the first bending-inducing line and the second bending-inducing line are bent as the base axis, the ease of standing at both ends in the longitudinal direction of the disposable diaper is used. The first bending induction line and the second bending induction line extend direction, and the elastic member provided in the disposable disposable diaper, etc., but the third bending induction line includes the first bending. The first base point of the induction line and the first base point of the second bending induction line, and the disposable disposable diaper, with the third bending induction line as the base axis, becomes easy to be used as the disposable disposable diaper. In the side direction and on the wearer's side, it is bent into a state of appearance (a state in which wrinkles and the like are small).

A disposable diaper for use in the present invention, with a 4 fold The curve inducing line includes the second base point of the first bending inducing line and the second base point of the second bending inducing line, and the disposable disposable diaper of the present invention uses the fourth bending inducing line as a base axis to become It is easy to face the long side of the disposable diaper and the side of the wearer is bent. This action is the same as the third bending induction line.

In the disposable disposable diaper of the present invention, the third bending inducing line and the fourth bending inducing line are included, and the third bending inducing line and the fourth bending inducing line are respectively associated with the absorption layer (or It is ideal for orthogonality of the long side axis of the disposable disposable diaper. It is the body of the wearer and is basically bilaterally symmetrical, and is considered from the viewpoint of wearing feeling.

In the first embodiment, the third bending inducing line 8 includes a pair of notch portions 23a and 23b extending from both the side edges 5a and the other side edge 5b toward the long side axis LA, and the fourth folding portion The curve inducing line 9 includes a pair of notch portions 24a and 24b extending from both of the one side edge 5a and the other side edge 5b toward the long side axis LA.

In the disposable disposable diaper of the present invention, the third bending inducing line and/or the fourth bending inducing line contain a pair of notched portions, the third bending inducing line and/or the fourth bending inducing line The rigidity of the wire will be lower than the area other than the bending induction line, that is, the rigidity of the area having no notch portion, and the disposable diaper will be the third bending line and the fourth bending line. The induction line as the base axis becomes easy to be bent toward the longitudinal direction of the disposable disposable diaper and the wearer side. Further, the disposable disposable diaper of the present invention has a notched portion, the third bending inducing line is easily formed at a position including the first base point, and the fourth bending inducing line is likely to contain the second base point. s position form.

In the first embodiment, the disposable disposable diaper 1 includes the first base point 16a and the second base point 17a of the first bending-inducing line 6, and the first base point of the second bending-inducing line 7 16b and the second base point 17b are divided into the squirrel abutment region 10, and the disposable disposable diaper 1 is provided with the squirrel abutment region 10 and the squirrel adjacent to the squirrel abutment region in the worn state. The portion around the portion 11 is formed with the groin abutment region 10 as the shape portion 12 of the substantially quadrangular trapezoidal cone of the upper base.

Further, in the first embodiment, the squirrel-claw contact region 10 is also the first bending inducing line 6, the second bending inducing line 7, and the third bending inducing line 8 and the fourth bending inducing line 9 The area enclosed.

When the wearer wears the disposable disposable diaper 1, the forefoot is mainly sandwiched between the two legs of the wearer, and the first bending inducement line 6 and the second bending induction line 7 are used as the base axis. The disposable diaper 1 is folded toward the width direction of the disposable diaper 1 and the wearer side. Then, the first bending inducing line 6 and the second bending inducing line 7 are bent, and the third bending inducing line 8 and the fourth bending inducing line 9 are used as the base axis, and the disposable disposable diaper 1 is used. It will be bent toward the longitudinal direction of the disposable disposable diaper 1 and worn by the wearer side. As a result, the disposable disposable diaper 1 becomes easy to contain the shape portion 12 of the substantially rectangular trapezoidal cone.

In the first embodiment, the first base point 16a of the first bending inducing line 6 and the first base point 16b (the third bending inducing line 8) of the second bending inducing line 7 and the first bending inducing line 6 2nd base point 17a and The second base point 17b (the fourth bending inducing line 9) of the 2 bending inducing line 7 is disposed in the forefoot region FC, and the entire groin portion abutting region 10 is the front waist region FW and the posterior femoral region. The RC leaves and exists inside the former femoral domain FC.

By doing so, the disposable disposable diaper of the present invention, in the worn state, becomes easy to contain the shape portion of the substantially square pyramidal cone having the squirrel abutment region as the upper base, and becomes easy to wear along. The body's three-dimensional shape fits.

In the first embodiment, the absorbent layer 4 is provided in a substantially rectangular shape in the unfolded state of the disposable disposable diaper 1.

In the technical field, the wearer's ease of action is emphasized, and the absorbent layer is formed into an hourglass-type shape in an unfolded state. However, the hourglass-type absorbent layer has a narrow liquid receiving area, so that it is liable to cause leakage. In the disposable disposable diaper of the present invention, even if the absorbent layer has a substantially rectangular shape, the wearer's ease of movement can be maintained, and the three-dimensional shape of the wearer's body, particularly the groin, can be attached. It is not easy to cause leakage.

Further, in the disposable disposable diaper of the present invention, the absorbent layer may be provided with an hourglass shape in an unfolded state.

In the first embodiment, the first bending inducing line 6 has a curved shape that protrudes from one side edge 5a toward the long side axis LA, and the second bending inducing line 7 is provided with the other side edge 5b. A curved shape that protrudes toward the long side axis LA.

It is provided by the first bending inducing line and the second bending inducing line The above-mentioned curved shape, the disposable disposable diaper of the present invention, the longitudinal direction of the disposable disposable diaper and the wearer side with the first bending inducing line and the second bending inducing line as the base axis It becomes easy to bend in a state of good appearance (less state such as wrinkles).

In the disposable disposable diaper of the present invention, the first bending inducing line and the second bending inducing line are provided with a curved shape, and when the front femoral condyle is sandwiched between the wearer's feet, In the disposable diaper, the first bending induction line and the second bending induction line are used as the base axis, and the disposable diaper is folded toward the width direction of the disposable diaper. Next, in the disposable disposable diaper, when the first bending inducing line and the second bending inducing line are bent as the base axis, both ends of the disposable diaper in the longitudinal direction are raised, and after use, Disposable disposable diapers can be easily conformed to the three-dimensional shape of the wearer's body. This is the same principle as the stereo picture book that jumps out.

Further, in the present specification, the curved shape is not limited to a circular arc shape, and the curved shape may include a protruding portion, a concave portion, and the like.

In the first embodiment, the starting point 6' on the distal end FE side of one side edge 5a of the first bending inducing line 6 exists in the front waist region FW, and the other side edge 5b of the second bending inducing line 7 The starting point 7' of the front end FE side is also present in the front waist area FW.

In the disposable disposable diaper of the present invention, the starting point on the front end side of the two intersections of the first bending inducing line and one side edge, and the second bending inducing line and the other side edge are The starting point on the front end side of the two intersection points exists in the front waist area, so that the disposable disposable diaper is easy to have a three-dimensional shape that fits along the wearer's groin portion (easy to have a rear) The squirrel abuts the area).

According to the disposable disposable diaper according to another embodiment of the present invention, the first bending inducing line and the starting point on the distal end side of the second bending inducing line are present in the anterior femoral condyle.

Further, the end point 6" of the side edge 5a of the one side edge 5a of the first bending inducing line 6 exists in the rear femoral region R, and the other side edge 5b of the second bending inducing line 7 is behind The end point 7" of the end RE side is also present in the posterior femoral region RC.

By doing so, the disposable disposable diaper of the present invention is easily provided with a three-dimensional shape that fits along the groin portion of the wearer. Specifically, in the back waist area of the disposable disposable diaper, since the pressure is applied to the waist circumference of the wearer when wearing, the end point of the rear end side of the first bending induction line, and the second When the end point of the rear end side of the bending induction line exists in the back waist region, the three-dimensional shape that is attached along the squirrel portion of the wearer is easily crushed, and it becomes difficult to maintain the shape. On the other hand, if the above-mentioned end point exists in the posterior femoral condyle, the three-dimensional shape attached along the squirrel portion of the wearer is not easily crushed, and the adhesiveness of the disposable disposable diaper to the wearer can be improved.

According to the disposable disposable diaper of the other embodiment of the present invention, the end points of the first bending inducing line and the rear end side of the second bending inducing line are present in the back waist area.

In the first embodiment, the disposable disposable diaper 1 is provided in the vicinity of one side edge 5a of the absorbent layer 4 (specifically, the inner side of one side edge 5a), and has a long side along the absorbent layer 4. Direction of the axis LA The first elastic member 21 is provided in the vicinity of the other side edge 5b of the absorption layer 4 (specifically, the inside of the other side edge 5b), and is disposed along the longitudinal direction L of the absorption layer 4. The second elastic member 22 is.

In the disposable disposable diaper of the present invention, by providing the first elastic member and the second elastic member, the disposable disposable diaper is used in a worn state, and it becomes easy to use the disposable disposable diaper. The long side is oriented and the wearer side is bent.

Further, in the present specification, the vicinity of the side edges includes the side edges and the inner side and the outer side of the side edges.

In the first embodiment, the end portion 21' on the distal end FE side of the first elastic member 21 is disposed at the first base point 16a (and the first base point of the second bending induction line 7) than the first bending inducing line 6. 16b) closer to the front end FE side, and the end portion 22' on the distal end FE side of the second elastic member 22 is disposed on the first base point 16b of the second bending inducing line 7 (and the first bending inducing line 6) 1 base point 16a) closer to the front end FE side. Further, the end portion 21" on the rear end RE side of the first elastic member 21 is disposed at the second base point 17a (and the second base point 17b of the second bending induction line 7) of the first bending inducing line 6 The end portion 22 ′ on the rear end RE side of the second elastic member 22 is disposed on the second base point 17 b of the second bending induction line 7 (and the first bending inducing line 6). 2 base point 17a) closer to the back end RE side.

By doing so, the disposable disposable diaper becomes easy at the first base point of the first bending inducing line and the first base point of the second bending inducing line (for example, the third bending inducing line). Disposable disposable diaper The longitudinal direction and the wearer side are bent, and the second base point of the first bending inducing line and the second base point of the second bending inducing line (for example, the fourth bending inducing line) become easy to face. The long-side direction of the disposable diaper and the wearer's side were bent.

The elastic member including the first elastic member and the second elastic member is a person skilled in the art, and for example, a polyurethane elastic fiber of about 470 to 940 dtex can be used.

In the first embodiment, the first bending inducing line 6 and the second bending inducing line 7 are compression portions formed by compressing the liquid pervious layer 2 and the absorption layer 4. Specifically, the first bending inducing line 6 is provided with a pressure as a compression portion formed by intermittently embossing the liquid-permeable layer 2 and the absorbent layer 4 along the first bending inducing line 6. Flower part 30a. Similarly, the second bending induction line 7 is provided with embossing as a compression portion formed by intermittently embossing the liquid permeable layer 2 and the absorbing layer 4 along the second bending induction line 7 Part 30b.

Further, in the first embodiment, the first bending inducing line 6 and the second bending inducing line 7 are also groove portions formed by intermittently embossing the liquid-permeable layer 2 and the absorbent layer 4.

In the disposable diaper of the present invention, the first bending inducing line and the second bending inducing line include a compressed portion and/or a groove portion, and the thickness of the first bending inducing line and the second bending inducing line are In the disposable disposable diaper, it is easy to use the first bending-inducing line and the second bending-inducing line as the base axis, and it is bent toward the width direction of the disposable diaper and the wearer side.

Further, the first bending induction line 6 is provided on the absorption layer 4 There is a low basis weight region extending along the first bending inducing line 6 and having a certain width, and the low basis weight region is provided with a low basis weight region having a basis weight which is lower than the average basis weight of the absorption layer 4 28a. Similarly, the second bending inducing line 7 is provided on the absorption layer 4 as a low basis weight region extending along the second bending inducing line 7 and having a constant width, and the low basis weight region is provided The low basis weight region 28b having a basis weight lower than the average basis weight of the absorption layer 4.

In the disposable disposable diaper of the present invention, the first bending inducing line and/or the second bending inducing line are provided with a low basis weight region, and the disposable disposable diaper is used for the first bending. The induction line and/or the second bending induction line are used as the base axis, and it is easy to bend toward the width direction of the disposable disposable diaper and to the wearer side.

The disposable disposable diaper of the present invention has an embodiment having a low basis weight region, and the low basis weight region is preferably 30 to 90% by mass based on the average basis weight of the absorbent layer, and more preferably 40 to 80% by mass of the basis weight. When the ratio is less than 30%, there is a tendency for the absorbed liquid to move, and it is difficult to pass the first bending induction line and the second bending induction line, and if the ratio exceeds 90%, the disposable type is used. The disposable diaper may have a first bending inducing line and a second bending inducing line as a base axis, and may not be easily folded toward the width direction of the disposable disposable diaper and bent on the wearer side.

Further, the average weight of the absorption layer is preferably 300 to 700 g/m ² .

In the first embodiment, the first bending inducing line 6 is provided with a concave portion 29a formed on the surface of the absorbent layer 4 on the liquid-permeable layer 2 side in the low basis weight region 28a, and the second bending inducing line 7, in the low basis weight area 28b is provided with a concave portion 29b formed on the surface of the absorbent layer 4 on the liquid-permeable layer 2 side.

By doing so, the disposable diaper of the present invention has the first bending inducing line and the second bending inducing line as the base axis, and is easily folded toward the concave side, that is, the wearer folds sideways. song.

Fig. 6 is a cross-sectional view corresponding to the V-V section of Fig. 3, before the embossing portions 30a and 30b for forming the bending-inducing line, the absorbing layer 4 and the die film 4a. The absorbing layer 4 shown in Fig. 6 is provided with a low basis weight region 28a which is a concave portion 29a, and a low basis weight region 28a, and includes a bottom portion 28aa on which the embossing portion 30a for bending induction line is formed, and The inclined portion 28ab on both sides thereof. Further, the absorption layer 4 shown in Fig. 5 is provided with a low basis weight region 28b which is a concave portion 29b, and a low basis weight region 28b, and includes a bottom portion 28ba on which the embossed portion 30b for bending induction is formed. And the inclined portion 28bb on both sides thereof.

In the low basis weight regions 28a and 28b, the basis weights of the bottom portions 28aa and 28ba are the least, and in the inclined portions 28ab and 28bb, the basis weights are sequentially increased as they are separated from the bottom portions 28aa and 28ba.

Further, the basis weight of the place where the first embossed portion 13 and the second embossed portion 14 are formed is the same as the region around the first embossed portion 13 and the second embossed portion 14.

By forming a low basis weight region, the disposable disposable diaper has a first bending inducing line and a second bending inducing line as a base axis, and becomes easy to be used in the width direction of the disposable disposable diaper and The wearer bends sideways.

The above low basis weight region, for example, may be based on the same applicant's Japanese special The method described in No. 2010-233839 is formed.

In the first embodiment, the first bending inducing line 6 and the second bending inducing line 7 are respectively provided along the first bending inducing line 6 and the second bending inducing line 7 by liquid permeability. The layer 2, the chip adhesive film 4a, and a part of the low basis weight regions 28a and 28b of the absorption layer 4 are intermittently embossed to form the embossed portions 30a and 30b, but are used in the present invention. A disposable diaper is provided with an embossed portion formed by continuously or intermittently embossing a layer to be embossed. From the viewpoint that the wearer does not easily feel hard, the embossed portion is preferably formed by intermittently embossing the layer to be embossed.

As the layer to be embossed, the first bending inducing line and the second bending inducing line are not particularly limited as long as they function as a bending inducing line, and (absorbent layer) and (absorbent layer) And chip film), (absorber layer, chip film and liquid permeable layer), (absorber layer, chip film, auxiliary sheet and liquid permeable layer).

Further, a part of the low basis weight region of the absorbing layer may be embossed, or may be embossed as a whole.

The first bending inducing line and the second bending inducing line are provided with at least the embossing portion and the above-described low basis weight region in the absorption layer, and the absorbent layer contains pulp fibers and a highly absorbent material. The mass ratio of the superabsorbent material in the low basis weight region is preferably lower than the mass ratio of the superabsorbent material in the region outside the low basis weight region in the absorbent layer. By doing so, the embossing portion can be formed without breaking the chip film or the like on the first bending induction line and the second bending induction line, and the first folding can be performed. The curve inducing line and the second bending inducing line become easy to function as a bending inducing line.

As the superabsorbent material, for example, a starch-based, cellulose-based, or synthetic polymer-based superabsorbent material can be mentioned.

The mass ratio of the highly absorbent material is measured as follows.

(1) A specific amount of a low basis weight sample is cut out from the low basis weight region of the absorption layer, and the area S ₀ (cm ² ) and the mass m ₀ (g) thereof are measured.

(2) The low basis weight sample was placed in a nylon mesh bag of 400 mesh, immersed in 1000 ml of physiological saline (concentration: 0.9% by mass) for 30 minutes, dehydrated at 150 G (850 rpm) for 2 minutes, and dehydrated from the nylon bag. After the low basis weight sample, its mass m ₁ (g) is measured.

The water absorption rate A _1b (%) was calculated by the following formula: A _1b (%) = 100 × (m _{1 -} m ₀ ) / s ₁ .

(3) A specific amount of sample was cut out from a region other than the low basis weight region of the absorption layer, and the water absorption rate A _nb (%) was calculated in the same manner as the low basis weight sample.

(4) As long as the water absorption rate A _1b (%) < water absorption rate A _nb (%), the mass ratio of the superabsorbent material located in the low basis weight region can be judged to be smaller than the region outside the low basis weight region in the absorption layer The mass ratio of the highly absorbent material is still low.

Further, the measurement was carried out at 20 °C.

The disposable diaper of the present invention is not limited to the above embodiment, and the disposable diaper according to another embodiment of the present invention can be kept sucked in principle by reducing the fiber density of the absorbing layer. A certain height is collected, and a low basis weight area is formed on one side. In the disposable diaper according to another embodiment of the present invention, the first bending inducing line and the second bending inducing line are respectively provided on the absorption layer along the first bending inducing line and the second The bending inducing line extends and has a wide width and a low basis weight region. In the low basis weight region, the absorption layer can maintain the absorption layer in principle by having a low fiber density which is higher than the average fiber density of the absorption layer. At a certain height, one side has a lower basis weight than the average basis weight of the absorbent layer. By reducing the fiber density of the absorbing layer, the first bending inducing line and the second bending inducing line can also be a bending inducing line.

In the embodiment shown in FIGS. 1 to 5, the low basis weight regions 28a and 28b are provided with groove-shaped recessed portions 29a and 29b formed on the surface of the absorbent layer 4 on the liquid-permeable layer 2 side, respectively. However, in the disposable diaper of the present invention, the concave portion is not limited to the groove shape.

Figure 8 is a view for explaining a disposable disposable diaper according to another embodiment of the present invention, and is a cross-sectional view corresponding to a VV section in Fig. 3, for forming a bending induction line. The figure before the embossing.

The absorbing layer 4 shown in Fig. 8 includes an absorbing layer 4' between the first bending inducing line 6 and the second bending inducing line 7, and an absorbing layer 4 outside the first bending inducing line 6. And the absorption layer 4"' which is outside the second bending inducing line 7, the first bending inducing line 6 and the second bending inducing line 7 are respectively provided along the first bending inducing line 6 and 2, the slit portions 31a and 31b of the absorbing layer 4 in which the bending line 7 is extended. The slit portion 31a is defined by the absorbent layer 4' and the absorbent layer 4", and the slit portion 31b is defined by the absorbent layer 4' and the absorbent layer 4"'.

By doing so, the disposable diaper of the present invention has the first bending inducing line and the second bending inducing line as the base axis, and becomes easy to be used in the wide direction of the disposable diaper. And the wearer side bends.

The disposable disposable diaper of the present invention contains an absorbent layer and a die pad film, and the first bending inducing line and/or the second bending inducing line have a slit portion, and the slit portion is absorbed. It is preferable that the chip adhesive film on one surface of the layer and the die bond film on the other surface of the absorption layer are bonded together (the bonding of the die adhesive films). In the case where the wearer moves, the interval between the absorbent layers adjacent to the slit portion can be kept constant, and the first bending inducing line and/or the second bending inducing line can continue to function.

The bonding of the die films to each other may be a hot-melt adhesive, for example, a bonding of a hot-melt adhesive such as a synthetic rubber (SIS, SBS, SEPS, SEBS), EVA, or polyolefin (PE, PP). The heat is melted by the embossed chip film.

The bonding of the above-mentioned chip film can be maintained even when wet. In the case where the disposable diaper absorbs liquid such as urine, the first bending induction line and/or the second bending induction line can continue to function.

The bonding of the chip films at the time of wetting can be evaluated as follows.

(1) Measurement of aspiration capacity

(i) From the disposable diaper to be evaluated, the sample (absorbent layer and chip film) was taken out and the mass was measured: M ₀ (g). Further, when the absorption layer is taken out, the elastic member is removed as much as possible.

(ii) The sample was placed in a nylon bag of 400 mesh, and immersed in 1000 ml of physiological saline (concentration: 0.9% by mass) for 30 minutes, and then the sample was set so that the skin side of the sample was directed to the outside of the centrifuge. Dehydrated at 150 G (850 rpm) for 2 minutes.

(iii) Measure the mass of the sample taken from the nylon bag: M ₁ (g).

(iv) The liquid absorption capacity of the sample was calculated by the following formula: the liquid absorption capacity (g) = M ₁ (g) - M ₀ (g).

(2) Confirmation of bonding of the chip adhesive films after aspiration

(i) The sample (absorbent layer and chip film) was taken out from the disposable disposable diaper to be evaluated.

(ii) Into a tray larger than the sample, a physiological saline solution (concentration: 0.9% by mass) in an amount of 70% of the above-mentioned liquid absorption capacity is injected, and the sample is immersed in the physiological saline of the tray. water.

(iii) After standing for 5 minutes, the sample was taken out, and at the slit portion, it was confirmed whether or not the chip adhesive films were bonded to each other.

Further, the above measurement was carried out at 20 °C.

In the disposable diaper of the present invention, after the above measurement, it is preferable that the chip adhesive film is bonded to each other in the slit portion.

Further, in the first embodiment, the disposable disposable diaper 1 includes a pair of three-dimensional hem 25 on both side portions in the longitudinal direction L of the disposable disposable diaper 1 after use. A pair of three-dimensional hem 25, respectively: The free end 25a of the long-side axis of the disposable disposable diaper 1 and the fixed end 25b which is further away from the long-side axis LA of the disposable disposable diaper 1 than the free end 25a. The fixed end 25b is fixed to the liquid permeable layer 2. The free end 25a is provided with an elastic member 26a having elasticity toward the longitudinal direction L of the disposable disposable diaper 1, and the free end 25a is used in the longitudinal direction L of the discarded disposable diaper 1 The end, the interposing fixing portion 32 is fixed to the surface sheet 2.

In the first embodiment, in the unfolded state of the disposable diaper 1 after use, the squid portion abutting region 10 is not overlapped with the pair of three-dimensional hem 25 in the thickness direction of the disposable diaper 1 after use.

By doing so, in the disposable disposable diaper of the present invention, the nipple abutment area becomes easy to maintain its shape, and the disposable disposable diaper becomes easy to follow the wearer in the worn state. The body's three-dimensional shape fits.

Further, in the disposable disposable diaper of the present invention, the first bending inducing line and the second bending inducing line are preferably line-symmetrical with respect to the longitudinal axis of the absorbent layer. It is the body of the wearer and is basically bilaterally symmetrical, and is considered from the viewpoint of wearing feeling.

In the disposable disposable diaper of the present invention, it is preferable that the first bending inducing line and the second bending inducing line do not intersect the longitudinal axis of the absorbent layer, respectively. It is a squirrel-abutment contact region formed by the first base point and the second base point of the first bending-inducing line and the first base point and the second base point of the second bending-inducing line (the present invention is discarded after use) In the embodiment including the third bending inducing line and the fourth bending inducing line, the paper diaper is composed of the first bending inducing line, the second bending inducing line, the third bending inducing line, and the fourth The squirrel abutment region formed by the bending induction line is formed on the long axis of the absorbing layer.

Further, in the disposable disposable diaper of the present invention, one or both of the first bending inducing line and the second bending inducing line may be further added between the first base point and the second base point. The base point. A disposable disposable diaper is provided between the third bending inducing line and the fourth bending inducing line to provide a new utility for bending the disposable disposable diaper toward the longitudinal direction and the wearer's side. The bending-inducing line is used, so that the disposable diaper is used, and in the worn state, it is easier to have a shape along the three-dimensional shape of the wearer's body.

As the additional base point, the distance from the front end toward the rear end may not be changed from the long-side axis as it approaches the additional base point, or may be further away from the long-side axis, and The base point is farther away, and the closer to the long axis is.

The disposable disposable diaper of the present invention contains, as shown in the first embodiment, the first base point, the second base point, and the second bend by the first bending inducing line in the worn state. A squirrel abutment region of the substantially rectangular shape divided by the first base point and the second base point of the induction line (the first bending inducement line, the second bending induction line, the third bending induction line, and the fourth bending) Preferably, the squirrel abutment region of the substantially rectangular shape surrounded by the induction line and the surrounding area of the squirrel portion adjacent to the squirrel abutment region are preferably the shape of the substantially quadrangular trapezoidal cone of the upper base. . In the worn state, it can be attached along the three-dimensional shape of the wearer's body, and specifically, it can be attached along the shape of the groin. Moreover, by using a disposable disposable diaper to fit along the shape of the groin, a wider surface can be used. The urinary discharge is reduced, and the leakage of urination will be less.

The disposable disposable diaper of the present invention can be produced by a combination of methods known in the art. For example, the absorbent layer of the first embodiment can be produced by the method described in JP-A-2010-233839 of the same applicant.

1‧‧‧Disposable disposable diapers

2‧‧‧liquid permeable layer

3‧‧‧ liquid-impermeable layer

4‧‧‧Absorbent layer

Side edge of 5a‧‧‧

5b‧‧‧ the other side of the side

6‧‧‧1st bend induction line

6’‧‧‧ starting point

6"‧‧‧ End

7‧‧‧2nd bend induction line

7’‧‧‧ starting point

7"‧‧‧ End

10‧‧‧ 蹊 抵 抵 area

13‧‧‧1st embossing department

14‧‧‧2nd embossing department

21‧‧‧1st elastic member

22‧‧‧2nd elastic member

23a, 23b‧‧‧ gap

24a, 24b‧‧‧ gap

25‧‧‧Three-dimensional ruffles

25a‧‧‧Free end

25b‧‧‧ fixed end

26a, 26b‧‧‧ elastic members

27‧‧‧Buckle belt

30a, 30b‧‧‧ embossing department

32‧‧‧ Fixed Department

F‧‧‧Predecessor

R‧‧‧Back body

FW‧‧‧ front waist area

FC‧‧‧ former shareholder territory

RW‧‧‧After waist area

RC ‧ ‧ post-share territory

Claims (14)

A disposable disposable diaper having a liquid permeable layer, a liquid impermeable layer, and one side edge, the other side edge, and the long side axis, And an absorbent layer at the front end and the rear end, and are divided into: a front waist area, a back waist area, and a disposable disposable diaper between the front and the rear femoral area, after use A disposable diaper characterized in that the front ridge of the absorbing layer is provided with a first bending inducement disposed between the long side axis and one side edge and extending in the direction of the long axis a second bending inducing line extending between the long side axis and the other side edge and extending in the direction of the long axis, the first bending inducing line and the second bending inducing line are at least The compressed portion, the groove portion, or the slit portion of the absorbent layer, and the disposable disposable diaper has a compression in a central region between the first bending inducing line and the second bending inducing line. a compression portion formed by the above absorption layer. The disposable diaper according to claim 1, wherein the compressed portion in the central region includes an embossed portion formed by embossing the absorbent layer. The disposable diaper according to claim 2, wherein the embossed portion is extended in one or a plurality of directions in a direction parallel or orthogonal to a direction of the long axis. The linear embossed portion. As described in any one of claims 1 to 3 of the patent application In the disposable diaper, the first bending inducing line and the second bending inducing line each include a first base point on the distal end side and a second base point on the rear end side, and a first bending inducing line And the second bending inducing line is closer to the long axis along the first base point in the direction from the front end toward the rear end, and is closer to the long axis than the first base point The distance is not changed or is away from the long axis, and the first bending inducing line and the second bending inducing line are closer to the length as they approach the second base point in the direction from the front end toward the rear end. The side axis or the distance from the long axis is not changed, and is further away from the long axis as it moves away from the second base point. The disposable disposable diaper according to the fourth aspect of the invention, wherein the first base point and the second base point of the first bending induction line, and the first base point and the second base point of the second bending induction line , exists in the above-mentioned former shareholding area. The disposable disposable diaper according to the fourth aspect of the invention, wherein the distance between the first bending inducing line and the second base point of the second bending inducing line and the longitudinal axis is a ratio The distance between the first bending point of the first bending inducing line and the second bending inducing line is shorter than the distance from the long axis. The disposable disposable diaper according to the fourth aspect of the invention, wherein the distance between the first bending inducing line and the second base point of the second bending inducing line and the longitudinal axis is a ratio The distance between the first bending point and the second base point of the second bending inducing line is shorter than the distance between the one side edge and the other side edge. Disposable disposable diapers as described in claim 4 of the patent application, In addition, the disposable disposable diaper further includes a third bending inducing line and a fourth bending inducing line extending toward the wide direction of the disposable disposable diaper, and a third bending inducing line. The first base point including the first bending inducing line and the second bending inducing line, and the fourth bending inducing line includes the first bending inducing line and the second base point of the second bending inducing line. The disposable disposable diaper according to claim 8, wherein at least one of the third bending inducing line and the fourth bending inducing line includes a side edge from the one side and a side edge of the other side. A pair of notches extending from the two sides toward the longitudinal axis. The disposable disposable diaper according to the fourth aspect of the invention, wherein the disposable disposable diaper comprises: a first base point and a second base point by the first bending line; a nipple contact region between the first base point of the second bending induction line and the squirrel portion divided by the second base point, wherein the disposable disposable diaper includes: the crocodile abutment region in the wearing state, and the The squirrel abutment region is formed by a region around the groin portion adjacent to the squirrel portion, and the squirrel abutment region is used as a shape portion of the substantially quadrangular trapezoidal cone of the upper base. The disposable diaper according to any one of the first aspect of the invention, wherein the first bending inducing line and the second bending inducing line respectively have a side edge from the one side And a curved shape in which the other side edge protrudes toward the long side axis. The disposable diaper according to claim 11, wherein the first bending inducing line and the second bending inducing line are located on the front end side of the one side edge and the other side edge, respectively. Starting point, existence In the above front waist area. The disposable disposable diaper according to claim 11, wherein the first bending inducing line and the second bending inducing line are respectively located at the rear end of the one side edge and the other side edge The end point of the side exists in the above-mentioned posterior femoral region. A disposable diaper according to any one of claims 1 to 3, wherein the disposable diaper is in the vicinity of the side edge of the one side and the side edge of the other side. Each of the first elastic member and the second elastic member disposed along the longitudinal axis.