TWI600417B - Abandoned diapers - Google Patents

Description

Disposable diaper

This invention relates to an unfolded disposable diaper.

Previously, disposable diapers comprising stretchable side panels extending from the sides of the absorbent body were known. The human body system protrudes forward and the back is sunken, and then the lower side of the human body, the buttocks protrude rearward, and further has an groin, whereby the circumference becomes large. When the disposable diaper including the stretchable side panel is simply worn on the human body as described above, the degree of elongation of the stretchable side panel becomes uneven depending on the unevenness of the human body shape or the circumferential length of the change. When the stretchable side panels are unevenly stretched in this manner, there is a case where the circumferential length is large and the side sheets of the stretched body of the human body shape are left to be offset by the stretchable side sheets.

As a disposable diaper including a side panel, for example, a disposable diaper including a stretchable side panel described in Patent Document 1 and Patent Document 2 is known. Moreover, the disposable diaper described in Patent Document 3 and Patent Document 4 has been proposed by the present applicant as a disposable diaper including a stretchable side panel.

Prior technical literature Patent literature

Patent Document 1: Japanese Patent Laid-Open Publication No. 2008-526386

Patent Document 2: WO2008/002840

Patent Document 3: Japanese Patent Laid-Open Publication No. 2012-100832

Patent Document 4: Japanese Patent Laid-Open Publication No. 2012-120609

The stretchable side panels included in the disposable diaper described in Patent Document 1 and Patent Document 2 are not parallel to each other in the longitudinal direction of the side panels, and are formed into a complicated shape in plan view. Therefore, when the side panels of the shape as described above are manufactured, it is impossible to manufacture without trimming.

The side panels of the stretchable diaper described in Patent Document 3 and Patent Document 4 are formed in a rectangular shape in a plan view, and can be manufactured without trimming when manufacturing the side sheets.

However, in Patent Document 3 and Patent Document 4, at least the elastic member disposed on the lower side of the crotch and the adhesive layer that fixes the elastic member constituting the side piece are among the plurality of elastic members constituting the side piece. There is no record of the relationship. Therefore, in the disposable diaper described in Patent Document 3 and Patent Document 4, there is room for improvement in terms of the side sheet at the leg circumference which is reduced in stretchability during the wearing of the diaper, and the feeling of use is improved. .

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a disposable diaper which is improved in the ease of use of a side panel which is not easy to be left in the leg circumference even when the side panel of the diaper is not easily stretchable.

The present invention relates to a disposable diaper comprising a vertically long absorbent body comprising a liquid-retaining absorbent body, a front sheet disposed on the opposite side of the skin of the absorbent body, and a configuration The back sheet of the non-skin facing surface of the absorbent body is divided into a front side portion on the ventral side of the wearer when worn, a back side portion on the back side, and the back side portion and the back portion. a side panel between the side portions and a side panel extending outward in the width direction are respectively attached to both sides of the longitudinal direction of the absorbent body, and the side sheets are outside the longitudinal direction of the absorbent body. The fastening portion is attached to the outer side in the width direction. The side panels are extended in parallel with each other in the longitudinal direction of the absorbent body in an extended state, and comprise: two sheets; a plurality of elastic members, etc. Fixing between the two sheets and extending in the width direction; a body side adhesive layer disposed on the end side of the plurality of elastic members on the side of the absorbent body and extending along the longitudinal direction of the absorbent body; a layer disposed on an end side of the outer side of the side panel of the elastic member and extending along a longitudinal direction of the absorbent body; and a plurality of intermediate adhesive layers disposed on the body side adhesive layer and the outer side And extending along the length direction of the absorbent body; and interposing the body side adhesive layer, the outer adhesive layer and the intermediate adhesive layer intermittently disposed in an elongated state in the longitudinal direction of the absorbent body The elastic member is formed by being fixed between the two sheets. The adhesive strength of the intermediate adhesive layer is weaker than the adhesive strength of each of the main body side adhesive layer and the outer side adhesive layer. The elastic member disposed at least on the lowermost side of the plurality of elastic members is one end portion of the end portions of the elastic member between the body side adhesive layer and the outer adhesive layer, and the other end portion It is located on the above-mentioned body side adhesive layer or the above outer side adhesive layer.

1A‧‧‧ diapers

1B‧‧‧ diapers

1C‧‧‧ diapers

1D‧‧‧ diapers

1E‧‧‧diapers

1F‧‧‧ diapers

1G‧‧‧ diapers

1H‧‧‧ diapers

1I‧‧‧diapers

2‧‧‧Absorbable ontology

2S‧‧‧ side

2S1‧‧‧ side edge

3‧‧‧ side film

3'‧‧‧Flexible sheet

3d‧‧‧ edge

3i‧‧‧lateral edge

3o‧‧‧lateral edge

3S‧‧‧Outside

3u‧‧‧ edge

4‧‧‧Buckle tape

5‧‧‧With the clasp

6‧‧‧ joint area

7‧‧‧Manufacturing device for stretchable sheet

21‧‧‧Front sheet

22‧‧‧ Back sheet

23‧‧‧Acceptor

24‧‧‧Side sheet

25‧‧‧Elastic members for the formation of three-dimensional pleats

26‧‧‧Flexible members for the formation of leg folds

31‧‧‧ Skin side sheet

31'‧‧‧Striped sheet

31S‧‧‧Extension

32‧‧‧Non-skin side sheet

32'‧‧‧Band sheet

32S‧‧‧Extension

33‧‧‧Flexible components

33A‧‧‧1st elastic member

33B‧‧‧2nd elastic member

33c‧‧‧Flexible components

33D‧‧‧3rd elastic member

33E‧‧‧4th elastic member

33I‧‧‧End

33O‧‧‧ end

34‧‧‧Binder

35‧‧‧ Body side adhesive layer

36‧‧‧Outer adhesive layer

37‧‧‧Intermediate adhesive layer

38‧‧‧ Non-continuous area

41‧‧‧With substrate sheet

42‧‧‧ hook material

61‧‧‧Fuse Department

61G‧‧‧ fusion group

71‧‧‧Longitudinal structures for line transport

72‧‧‧Longitudinal structures for line transport

73‧‧‧Integrated institutions

74‧‧‧ nip rollers

76‧‧‧Adhesive Coating Machine

77‧‧‧cutting mechanism

Θ1‧‧‧cross angle

Θ2‧‧‧cross angle

Θ3‧‧‧cross angle

Θ4‧‧‧ cross angle

Θ5‧‧‧cross angle

Θ6‧‧‧cross angle

Θ7‧‧‧cross angle

Θ8‧‧‧cross angle

Θ9‧‧‧cross angle

Θ10‧‧‧cross angle

Θ11‧‧‧cross angle

Θ12‧‧‧cross angle

Θ13‧‧‧cross angle

Θ14‧‧‧cross angle

Θ15‧‧‧cross angle

Θ16‧‧‧ cross angle

A‧‧‧ ventral side

B‧‧‧Back side

C‧‧‧胯下下

CL‧‧‧ center line

R‧‧ Direction

X‧‧‧Width direction

Y‧‧‧ Length direction

Fig. 1 is a plan view showing a state in which the disposable diaper of the unfolded type according to the first embodiment of the present invention is stretched out as viewed from the side of the front sheet.

Fig. 2 is an enlarged plan view showing a state in which the stretchable side panels included in the unfolded diaper of Fig. 1 are stretched.

Fig. 3 is a cross-sectional view showing a state in which the cross section of the line I-I of Fig. 1 is contracted.

Fig. 4 is an enlarged plan view (corresponding to Fig. 2) showing a state in which the stretchable side sheets included in the disposable diaper according to the embodiment of the present invention are stretched.

Fig. 5 is a view showing a state in which the disposable diaper of Fig. 1 is worn.

Fig. 6 is a perspective view showing an example of a method of manufacturing a side panel in the disposable diaper according to the first embodiment.

Fig. 7 is an enlarged plan view (corresponding to Fig. 2) showing a state in which the stretchable side sheets included in the disposable diaper according to the second embodiment of the present invention are stretched.

Fig. 8 is an enlarged plan view (corresponding to Fig. 2) showing a state in which the stretchable side sheets included in the disposable diaper according to the third embodiment of the present invention are stretched.

Fig. 9 is an enlarged plan view (corresponding to Fig. 2) showing a state in which the stretchable side sheets included in the disposable diaper according to the fourth embodiment of the present invention are stretched.

Fig. 10 is an enlarged plan view (corresponding to Fig. 2) showing a state in which the stretchable side sheets included in the disposable diaper according to the fifth embodiment of the present invention are stretched.

Fig. 11 is an enlarged plan view (corresponding to Fig. 2) showing a state in which the stretchable side panels included in the disposable diaper according to the sixth embodiment of the present invention are stretched.

Fig. 12 is an enlarged plan view (corresponding to Fig. 2) showing a state in which the stretchable side sheets included in the disposable diaper according to the seventh embodiment of the present invention are stretched.

Fig. 13 is an enlarged plan view (corresponding to Fig. 2) showing a state in which the stretchable side panels included in the disposable diaper according to the eighth embodiment of the present invention are stretched.

Fig. 14 is an enlarged plan view (corresponding to Fig. 2) showing a state in which the stretchable side sheets included in the disposable diaper according to the ninth embodiment of the present invention are stretched.

Hereinafter, the disposable diaper according to the present invention will be described with reference to Figs. 1 to 5 based on a preferred first embodiment.

As shown in Fig. 1, the disposable diaper 1A (hereinafter also referred to as "diaper 1A") of the first embodiment includes a vertically long absorbent body 2 which is attached to the longitudinal direction of the absorbent body. The absorbent body 23 having a long liquid (retaining property in the Y direction), the front sheet 21 disposed on the skin facing surface side of the absorbent body 23, and the back sheet disposed on the non-skin opposing side of the absorbent body 23 The material 22 is divided into a ventral side portion A on the ventral side of the wearer when worn, a back side portion B on the back side, and a crotch portion C disposed between the ventral side portion A and the back side portion B. In the disposable diaper of the present invention, side panels extending outward in the width direction (X direction) are attached to both sides of the longitudinal direction (Y direction) of the absorbent body, and in the diaper 1A, as shown in FIG. As shown, the two side portions 2S of the back side portion B of the absorbent body 2 are respectively mounted. Scaling side panel 3. Further, in the diaper 1A, the fastening tape 4 extending outward in the width direction (X direction) is attached to the side portion 3S of the side panel 3 in the longitudinal direction (Y direction) of the absorbent body.

As shown in FIG. 1, the diaper 1A is formed symmetrically with respect to the center line CL. Therefore, in the following description, the left-right symmetrical portion will be mainly described on the left side.

In the present specification, the term "skin facing surface" refers to the surface of the front and back surfaces of the members constituting the diaper 1A which are disposed on the skin side of the wearer when worn, and is in the "P" side in FIG. The same side of the face. In addition, the term "non-skin-facing surface" refers to a surface on the front and back sides of each member constituting the diaper 1A that faces the skin side of the wearer when worn, and is in the "Q" side in FIG. The same side. In addition, the "absorbent body longitudinal direction" means the lengthwise direction of the absorbent main body from the back side portion toward the front side portion, and the "Y" direction shown in each drawing is the absorbent body 2 of the diaper 1A. The longitudinal direction (absorbent body longitudinal direction) is a direction parallel to the center line CL, and the "X" direction shown in each drawing is the width direction of the absorbent body 2 of the diaper 1A (absorbent body width direction), and It is the direction perpendicular to the center line CL. Hereinafter, the diaper 1A will be specifically described.

As shown in FIG. 1, the absorbent body 2 has a rectangular shape elongated in the Y direction, and includes a liquid permeable front sheet 21, a liquid-impermeable or liquid-impermeable (including water-repellent) back sheet 22 And a liquid retaining body 23 interposed between the two sheets 21 and 22. As shown in FIG. 1, the top sheet 21 and the back sheet 22 cover the entire surface of the skin facing surface of the absorbent body 23 and the non-skin opposing surface, and extend from the periphery of the absorber 23 to extend. The part is fixed by fusion of an adhesive such as hot melt or heat sealing. The front sheet 21 is the same length as the back sheet 22 in the Y direction, but is formed shorter than the back sheet 22 in the X direction. The back sheet 22 is formed in the same shape as the absorbent body 2 in plan view.

Further, the side sheets 24 are disposed on the side sheets 2S in the Y direction of the absorbent main body 2 via the front sheet 21, respectively. The side sheet 24 is spread over the skin facing side of the front sheet 21 Further, the side portion 2S in the Y direction is disposed and fixed over the entire area. The end portion of the side sheet 24 in the X direction (near the center line CL) is a free end, and the elastic member 25 for forming the three-dimensional gather is disposed in the vicinity of the free end of the crotch portion C in an extended state in the Y direction. At the time of wearing, by the contraction force of the elastic member 25, a portion having a specific width from the free end is separated from the front sheet 21 to form a three-dimensional pleat.

Further, the side sheets 24 and the back sheet 22 extending toward the outer side in the X direction are joined to the both side portions 2S of the absorbent main body 2 in the Y direction, thereby forming flap portions. In the diaper 1A, as shown in Fig. 1, the elastic member 26 for forming a leg gather is disposed in a state in which the flap portion is fixed in the crotch portion C in the Y-direction, and is contracted by the elastic member 26 when worn. Force to form leg folds.

As described above, as shown in FIG. 1, each of the both side portions 2S of the back side portion B of the absorbent body 2 is attached with a stretchable side panel 3 extending outward in the width direction (X direction), and The outer side portion 3S of the side panel 3 is attached with a fastening tape 4 extending outward in the width direction (X direction). In the diaper 1A, as shown in FIG. 3, the side panel 3 which has stretchability in the X direction is fixed by the side edge 2S1 of the self-absorbable body 2 to the outer side in the X direction by various well-known methods. The non-skin contrast surface of the back sheet 22 disposed on the side portion 2S. Further, in the diaper 1A, the side panel 3 is fixed to the non-skin opposing surface of the back sheet 22, but may be disposed between the side sheet 24 and the back sheet 22 disposed in the side portion 2S. It can be fixed or fixed to the skin facing surface of the side sheet 24.

As shown in FIGS. 2 and 3, the stretchable side panels 3 are extended in parallel with each other in the Y-direction, and include two sheets 31, 32 and a plurality of elastic members 33. And being fixed between the two sheets 31 and 32 and extending in the X direction; the body side adhesive layer 35 is disposed on the end 33I of the side of the absorbent body 2 of the plurality of elastic members 33 (near the center line CL) a side extending in the Y direction; an outer adhesive layer 36 disposed on the side of the end portion 3O on the side 3S side of the side member 3 of the elastic member 33 and extending in the Y direction; and a plurality of intermediate adhesive layers 37, etc. Disposed between the body side adhesive layer 35 and the outer adhesive layer 36 and along Y The direction extends. Further, in the present specification, the sheets 31 and 32 correspond to the side sheet.

Further, in the case where it is assumed that there is no side adhesive layer 36 or a body side adhesive layer 35 similar to the present invention, the end portion of the elastic rubber is also fixed, or solid coating, for example, by using an intermediate adhesive layer. When the adhesive of the sheet is applied in a spiral pattern or the like as a whole, the following problem occurs: the rubber thread in the middle portion of the rubber thread of the stretched stretched fabric is easily peeled off, not the rubber at the lower end. The wire is easy to fall off and directly compresses the leg at the lowermost end.

Hereinafter, the side panel 3 will be described in detail. As shown in Fig. 2, the stretchable side panel 3 in the diaper 1A is formed in a rectangular shape in a state of being planarly developed. Therefore, the side sheets 3 of the diaper 1A are in a planar state, and not only the end edges 3u, 3d in the Y direction extend parallel to each other, but also the side edges 3i, 3o in the Y direction extend parallel to each other. The extending direction of the end edges 3u, 3d intersects the extending direction of the side edges 3i, 3o at right angles.

In the diaper 1A, as shown in Fig. 1, the direction in which the side edges 3i, 3o of the side sheets 3 in the Y direction extend is parallel to the longitudinal direction (Y direction) of the absorbent body 2, and is absorbed. The side portions 2S of the back side portion B of the main body 2 are respectively attached with the stretchable side sheets 3.

Further, as shown in Fig. 2, the skin side sheet 31 on the skin facing surface side of the stretchable side sheet 3 and the non-skin side sheet 32 on the non-skin facing side are formed in a planar shape. In the state of the top view, the shape of the plan view is the same as that of the side panel 3 of the stretchability. In other words, the skin side sheet 31 and the non-skin side sheet 32 are formed in a rectangular shape having the same shape and the same size in the diaper 1A. The skin side sheet 31 and the non-skin side sheet 32 are longer than the length of the elastic member 33 in an extended state in a state of being planarly developed. Further, the skin side sheet 31 and the non-skin side sheet 32 constituting the stretchable side panel 3 are formed into the same shape and the same size in the diaper 1A, but the skin side sheet 31 and the non-skin side sheet are formed. 32 may also be different in length from the side edge 2S1 of the self-absorbent body 2. When the skin side sheet 31 and the non-skin side sheet 32 having different lengths extending in the X direction from the side edge 2S1 are used, the stretchable side sheet 3 is formed, and the outer side portion 3S of the stretchable side sheet 3 is used. The outer side of the X direction is the side of the skin The sheet 31 or the non-skin side sheet 32 is formed. Therefore, the softness of the outer side portion 3S of the stretchable side panel 3 is improved.

As shown in FIG. 3, each elastic member 33 is disposed between the skin side sheet 31 and the non-skin side sheet 32, and as shown in FIG. 2, at the end in the Y direction of the side sheet 3 in the extending direction thereof. In a state in which the extending directions of the edges 3u and 3d are inclined obliquely with respect to the X direction, they are arranged at substantially equal intervals in the Y direction. As shown in Fig. 2, the angle of intersection θ1 between the direction in which the elastic members 33 extend and the direction in which the end edges 3u and 3d of the side sheets 3 extend in the Y direction is the lower limit value in terms of stretchability, conformability, and appearance. It is not particularly limited, but is preferably more than 0°, more preferably 5° or more, and further preferably 30° or less, further preferably 20° or less, and specifically, preferably more than 0° and 30. Below °, it is more preferably 5 or more and 20 or less. The distance between the elastic members 33 adjacent in the Y direction is preferably 3 mm or more and 15 mm or less from the viewpoint of stretchability, conformability, and flexibility. Further, as described above, in the diaper 1A, the extending direction of the side edges 3i, 3o of the rectangular side sheets 3 in the Y direction is parallel to the longitudinal direction (Y direction) of the absorbent body 2 of the absorbent body 2, and therefore, The direction in which the elastic member 33 extends is also intersected with the width direction (X direction) of the absorbent body 2 at an intersection angle θ1. Further, in the side panel 3 on the right side and the side panel 3 on the left side, the inclination direction of the elastic member 33 is bilaterally symmetrical with respect to the center line CL.

The linear elastic member 33 disposed on the stretchable side panel 3 has a cross section which is not only a substantially circular shape but also a square shape, and also includes a polygonal shape or the like. The linear elastic member 33 preferably has a width (a dimension in the Y direction) or a diameter of 0.1 mm or more and 2 mm or less, more preferably 0.1, from the viewpoint of improving the flexibility of the stretchable side panel 3 or ensuring stretchability. Mm or more and 1 mm or less. Moreover, the number of the linear elastic members 33 disposed on the side panels 3 of the stretchability is preferably two or more and 25 or less, more preferably three or more and twenty or less. Further, the elongation can be appropriately selected from the conventionally known elongation, and it is preferable that one elastic member 33 having a linear stress of 0.1 N or more and 1 N or less when the elongation is 100% (natural state is 0%) is preferably It is fixed in a state in which the elongation is in the range of 50% or more and 300% or less, and further preferably It is fixed in a state of being stretched in a range of 100% or more and 250% or less. Further, the elongation is a ratio of the length of the portion which is increased by elongation to the natural length. For example, when the length of 10 cm is extended to 20 cm, the elongation is set to 100%.

The adhesive layer for fixing the linear elastic member 33 between the skin side sheet 31 and the non-skin side sheet 32 is as shown in FIG. 2, and includes a body side adhesive layer 35, an outer adhesive layer 36, and a middle layer. Agent layer 37. The intermediate adhesive layer 37 is attached to the diaper 1A, and a plurality of layers are provided in a region between the main body side adhesive layer 35 and the outer adhesive layer 36. The intermediate adhesive layer 37 is formed such that its bonding strength is weaker than the respective bonding strengths of the main body side adhesive layer 35 and the outer side adhesive layer 36. As a method of forming the adhesive strength of the intermediate adhesive layer 37 to be weaker than the adhesive strength of the main body side adhesive layer 35 and the adhesive strength of the outer adhesive layer 36, for example, the intermediate adhesive layer 37 can be made narrow and the body side The adhesive layer 35 and the outer adhesive layer 36 are formed in a wide format, and the application method of the adhesive is changed, or the application amount of the intermediate adhesive layer 37 is reduced, and the main body side adhesive layer 35 and the outer adhesive layer 36 are used. The amount of application of the adhesive is changed by changing the amount of application of the adhesive. Further, in the diaper 1A, the width of the intermediate adhesive layer 37 is narrower than the width of each of the main body side adhesive layer 35 and the outer side adhesive layer 36, and the adhesive strength of the intermediate adhesive layer 37 is weaker than that of the main body side adhesive layer 35. The subsequent strength and the subsequent strength of the outer adhesive layer 36. The width of the intermediate adhesive layer 37 is preferably 30% or more narrower than the width of each of the main body side adhesive layer 35 and the outer side adhesive layer 36, and further preferably 50% or more. The main body side adhesive layer 35, the outer side adhesive layer 36, and the intermediate adhesive layer 37 extend in the Y direction so as to intersect the majority of the elastic members 33, and extend over the entire length of the stretchable side sheets 3 in the Y direction.

In the following, the measurement method of the adhesive strength is described. However, in the first embodiment, the relationship between the above-described adhesive strengths may be used, and other measurement methods are not particularly limited.

[Follow strength measurement method]

The side sheet 3 including the stretchability of each of the above-mentioned adhesive layers is used as a measurement sample, and the end portions of the two sheets 31 and 32 which are obtained by superposing the side sheets 3 in the longitudinal direction are sandwiched one by one. The tensile tester (RTC-1150, manufactured by Orientec Co., Ltd.) was stretched at a tensile speed of 300 mm/min, and the strength at the time of peeling of the joint was measured. The main body side adhesive layer 35 was subjected to measurement on the main body side end portion of the stretchable side sheet 3, and the outer side adhesive layer 36 was measured by sandwiching the outer side end portion of the stretchable side sheet 3. For the intermediate adhesive layer 37, the body-side adhesive layer 35 portion or the outer adhesive layer 36 of the stretchable side panel 3 is partially cut away, and the sheet 31 of the side panel 3 in which the side panels 3 are not joined to each other is sandwiched. 32, the measurement was carried out.

In addition, as long as it has the relationship of the adhesive strength of the present invention, the specific adhesive strength is not limited. For example, it is preferable that the adhesive strength in the intermediate adhesive layer 37 is about 1 N/25 mm or more and 5 N/25 mm or less, and the outer side is followed by The adhesive strength in the agent layer 36 and the main body side adhesive layer 35 is 130% or more of the intermediate adhesive layer 37, and more preferably 150% or more.

As shown in FIG. 2 and FIG. 3, the side sheet 3 is an elastic member 33 which is disposed in an elongated state in which the main body side adhesive layer 35, the outer adhesive layer 36, and the intermediate adhesive layer 37 are intermittently disposed in the Y direction. It is formed by being fixed between two sheets 31 and 32. Specifically, the plurality of elastic members 33 in a state in which the X direction is obliquely elongated are interposed between the main body side adhesive layer 35, the outer adhesive layer 36, and the intermediate adhesive layer 37, and are arranged at substantially equal intervals in the Y direction. It is fixed between the skin side sheet 31 and the non-skin side sheet 32. The stretchable side panel 3 is applied to the body side sheet 31 and the non-skin side sheet 32 as a main body side adhesive layer 35, an outer side adhesive layer 36, and the middle by any known method. Next, after the application of the adhesive layer 37, the sheets 31 and 32 are superposed and pressed, whereby the linear elastic member 33 in an extended state is fixedly formed. Further, the stretchable side sheets 3 may be fixed by heat sealing or the like in addition to the fixing of the adhesive layers 35, 36, and 37.

As shown in FIG. 3, the stretchable side panel 3 is a portion where the elastic member 33 is not interposed, and the skin side sheet 31 and the non-skin side sheet 32 are interposed between the body side adhesive layer 35 and the outer adhesive layer. 36 and the intermediate adhesive layer 37 are directly joined. Therefore, the body side adhesive layer 35 Between the intermediate adhesive layer 37 adjacent to the body side adhesive layer 35, the adjacent intermediate adhesive layer 37, and the outer adhesive layer 36 and the intermediate adhesive layer 37 adjacent to the outer adhesive layer 36 Between the skin side sheet 31 and the non-skin side sheet 32, the non-adjacent region 38 is not formed. Similarly to the adhesive layers 35, 36, and 37, the non-adjacent region 38 intersects with the plurality of elastic members 33 as shown in FIG. 2, and extends in the Y direction over the entire length of the side sheets 3 in the Y direction.

In the side panel 3 of the diaper 1A, the elastic member 33 is fixed in an extended state by the body side adhesive layer 35, the outer adhesive layer 36, and the intermediate adhesive layer 37, and in a natural state in which the elastic member 33 is contracted, As shown in FIG. 3, a plurality of creases are formed on both sides of the side panel 3. Each of the creases is formed to extend in the Y direction so as to intersect the plurality of elastic members 33. As shown in FIG. 3, the crease formed on the side panel 3 is between the body side adhesive layer 35 and the outer adhesive layer 36. Due to the shrinkage of the elastic member 33, the two sheets 31, 32 are in the respective non-adjacent areas. The 38 is convexly convex in the direction separating from the elastic member 33, and is formed in a concave shape toward the elastic member 33 in each intermediate adhesive layer 37, and has a concavo-convex shape. Such wrinkles are not completely lost even when the diaper is worn.

In the side panel 3 formed as described above, at least the elastic member 33c disposed on the side closest to the crotch portion C of the plurality of elastic members 33 is both end portions of the elastic member 33c (the end portion 331 and the X direction near the center line CL) One of the outer end portions 33O) is located between the body side adhesive layer 35 and the outer adhesive layer 36, and the other end is located at the body side adhesive layer 35 or the outer adhesive layer 36. Specifically, in the diaper 1A, before the state in which the disposable diaper 1A is worn by the wearer, the elastic member 33c is in both end portions (the end portion 33I near the center line CL and the end portion 33O on the outer side in the X direction). One of the ends is located between the body side adhesive layer 35 and the outer adhesive layer 36. Here, the term "the disposable diaper 1A is worn before the wearer's state is completed" includes not only the state in which the diaper 1A is taken out of the product package but also the state before the diaper 1A is used, and the stretching of the velcro tape for wearing the diaper 1A. 4. The stretchable side panel 3 is first stretched to wear the state in which the diaper 1A is worn. In the diaper 1A, as shown As shown in Fig. 2, in the extended state of the stretchable side panel 3, the end portions of the elastic member 33c (the end portion 33I near the center line CL and the end portion 33O on the outer side in the X direction) are close to the center line CL. 33I is located between the body side adhesive layer 35 and the outer adhesive layer 36. Further, the end portion 33O on the outer side in the X direction is located on the outer adhesive layer 36.

In the diaper 1A, most of the plurality of elastic members 33 in a state of being elongated obliquely with respect to the X direction are both end portions (end portions 33I near the center line CL and end portions 33O outside the X direction) over the body side adhesive Layer 35 and outer adhesive layer 36 extend. In the end portions (the end portion 33I near the center line CL and the end portion 33O on the outer side in the X direction) of the elastic member 33 passing over the main body side adhesive layer 35 and the outer adhesive layer 36, there is no contraction force, and Unable to scale state.

Further, in the diaper 1A, the skin-side sheet 31 of the stretchable side panel 3 includes an end portion 33O on the outer side in the X direction of the elastic member 33 extending outward in the X direction as shown in Figs. 2 and 3 . The extension portion 31S and the non-skin side sheet 32 similarly include an extension portion 32S that extends outward in the X direction from the end portion 33O on the outer side in the X direction of the elastic member 33.

The extensions 31S, 32S are fixed to each other by heat sealing embossing, for example, by various known methods. In the case of using an adhesive, it is preferred to perform only heat sealing embossing in consideration of bleeding or stickiness in the end portion. It can also be fixed by pressurization after single or intermittent application of the adhesive. In view of the fact that the outer side portion 3S of the side panel 3 which is stretchable during use is not easily rolled, the extending portions 31S and 32S may be fixed to each other by an adhesive.

As shown in FIG. 3, the fastening tape 4 is joined to the non-skin opposing surface (surface on the Q side) of the side panel 3 in the diaper 1A via the joint region 6. Specifically, in the diaper 1A, as shown in FIG. 3, the inner side (close to the center line CL) of the fastening tape 4 in the X direction is attached only to the X in the non-skin side sheet 32 constituting the stretchable side panel 3. The extending portion 32S on the outer side is attached only to the non-skin opposing surface (surface on the Q side) of the extending portion 32S. The fastening tape 4 is attached to the diaper 1A, and is attached to the end portion 3u on the side of the back side B side in the Y direction of the stretchable side panel 3 as shown in Fig. 2 . Furthermore, in the diaper 1A, the adhesive tape 4 is attached only to the non-skin direction of the side panel 3 The face may be attached to the skin facing surface of the side panel 3, or may be attached to both the non-skin facing surface of the side panel 3 and the opposite side of the skin.

The adhesive tape 4 provided on the outer side portion 3S of the stretchable side panel 3 is described in detail. The adhesive tape 4 includes the tape substrate sheet 41 and includes a plurality of outer layers on the outer side in the X direction of the tape substrate sheet 41. The hook material 42 of the protrusion is engaged. The fastening tape 4 is folded before use, and is used as shown in FIG. 3 when it is used. The fastening tape 4 of the diaper 1A has a substantially trapezoidal shape of the upper bottom on the outer side in the X direction in the unfolded state as shown in Fig. 2 . The fastening tape 4 is formed by fixing the hook material 42 to the outer side in the X direction of the tape substrate sheet 41 which is formed in the same shape as the plan view of the fastening tape 4 . Further, as shown in Fig. 1, on the outer surface of the abdominal portion A of the diaper 1A, a cleat 5 for fastening the hook material 42 of the fastening tape 4 is provided.

In the joint region 6 where the fastening tape 4 and the side panel 3 are joined, as shown in FIG. 2, in the diaper 1A, it is formed by the adhesive 62, and is formed by heat sealing or ultrasonic sealing. A plurality of fusion portions 61 are joined to each other. As shown in FIG. 2, the joining region 6 includes a fusing portion group 61G in which a plurality of small-shaped fusion portions 61 are regularly arranged in the Y direction, and a plurality of the fusing portion groups 61G are arranged in the X direction. From the viewpoint of the strength, the joint region 6 is preferably in a range of 10% or more and 50% or less with respect to the total area of the side sheets 3 which are stretchable in the side panel 3 in a natural state in a plan view. It is preferably in the range of 10% or more and 40% or less.

The shape of the fusion portion 61 is not particularly limited, and may be any shape such as a circle, a rhombus, a triangle, or a polygon, in addition to an elliptical shape such as a diaper 1A. To avoid damage and wear feeling and then lifting the viewpoint of strength, the pattern of a sealing area of the fusion portion 61 is preferably 2mm to 30mm ² or less ² or more, and further ^more preferably ² or less 2mm 20mm. From the same viewpoint, the distance between the adjacent fusion portions 61 in the Y direction is preferably 1 mm or more and 8 mm or less, and more preferably 6 mm or less. From the same viewpoint, the distance between the adjacent adjacent fusion portions 61 is preferably 1 mm or more and 8 mm or less, and more preferably 6 mm or less. Further, from the same viewpoint, the number of the fusion portions 61 to be disposed is preferably 1/cm ² or more and 16 pieces/cm ² or less, and more preferably 2 pieces/cm ² or more and 10 pieces/cm ² or less. Further, from the same viewpoint, the ratio of the total seal pattern area of the plurality of fusion portions 61 to the area of the joint region 6 is preferably 10% or more and 70% or less, and more preferably 10% or more and 50% or less.

In the diaper 1A, as shown in FIG. 2 and FIG. 3, most of the plurality of elastic members 33 are formed on the outer side portion 3S side of the side portion 3 on the outer side of the outer side layer 3S in the X direction. The fusing portion 61 formed by sealing is fixed to the sheets 31, 32 constituting the side sheets 3. Further, in the diaper 1A, as shown in FIG. 2, the end portion 33O of the plurality of elastic members 33 is fixed to the sheet 31 constituting the side sheet 3 by sealing from the outer side of the outer adhesive layer 36 in the X direction. 32, but as shown in FIG. 4, it may be fixed to the sheets 31 and 32 constituting the side sheets 3 by sealing together with the outer adhesive layer 36.

When the diaper 1A is worn, as shown in FIG. 5, the fastening tape 4 is unfolded, and the fastening tape 4 is stretched by hand, and the hooking material 42 of the fastening tape 4 is pressed in a state where the side panel 3 is stretched. The buckle is fastened to the buckle 5.

The constituent materials of the diaper 1A will be described.

As the front sheet 21, the back sheet 22, and the absorber 23 constituting the absorbent main body 2, a user such as a disposable disposable diaper or a menstrual napkin can be used without any particular limitation. For example, as the front sheet 21, a hydrophilic and liquid-permeable non-woven fabric or a three-dimensional apertured film or the like can be used. As the back sheet 22, a liquid-impermeable or liquid-impermeable film or a non-woven fabric (for example, a spunbond-meltblown-spun nonwoven fabric, a hot air non-woven fabric, a spunbonded nonwoven fabric, a water needle nonwoven fabric, a needle-punched nonwoven fabric, or the like) can be used. Alternatively, a composite sheet in which these layers are laminated may be used. Further, as the absorber 23, it is possible to use an assembly of fibers such as pulp fibers coated with a water-permeable tissue or a non-woven fabric (or a nonwoven fabric) or to retain particles of a water-absorbent polymer. The core is obtained by the person. As the side sheet 24 constituting the three-dimensional protection, a film, a nonwoven fabric, a woven fabric, or a laminated sheet of these or the like can be used.

The skin side sheet 31 and the non-skin side sheet 32 which constitute the stretchable side sheet 3 can be used without any particular limitation, and various sheets used in absorbent articles such as disposable disposable diapers and menstrual napkins can be used.

For example, as the skin side sheet 31 and the non-skin side sheet 32, a nonwoven fabric, a woven fabric, a film, or such a laminated sheet can be used.

The linear elastic member 33 constituting the stretchable side panel 3, the elastic member 25 constituting the three-dimensional shield, and the leg elastic member 26 may be made of natural rubber, polyurethane, polystyrene-polyisoprene. A linear or rope-like elastic member such as a diene copolymer, a polystyrene-polybutadiene copolymer, or a polyethylene-α-olefin copolymer such as ethyl acrylate-ethylene. The plurality of elastic members 33 disposed on the stretchable side panels 3 are preferably disposed at the same elongation rate from the viewpoint of the manufacturing cost or the simplification of the manufacturing steps.

The adhesive of the main body side adhesive layer 35, the outer adhesive layer 36 and the intermediate adhesive layer 37 forming the stretchable side panel 3 is mainly used as the adhesive agent 62 of the bonding region of the fastening tape 4 and the side panel 3 or Preferred materials for bonding the bonding members between the members include amorphous polyolefin, ethylene vinyl acetate (EVA), and ethylene-acrylate copolymer (EEA, ethylene-ethylacrylate copolymer). ), styrene-butadiene-styrene block copolymer (SBS, Styrene Butadiene Styrene Block Copolymer), styrene-isoprene-styrene block copolymer (SIS, Styrene Isoprene Styrene Block Copolymer), benzene Thermoplastic polymerization of ethylene-ethylene/butylene-styrene block copolymer (SEBS, Styrene Ethylene Butylene Styrene Block Copolymer), styrene-ethylene/propylene-styrene block copolymer (SEPS, Styrene Ethylene Propylene Styrene Block Copolymer) a mixture of substances and the like. The subsequent agent is preferably a hot melt type.

Further, it is preferable to use a spray gun, a coating gun or the like as an adhesive applicator to form a coating pattern of an adhesive or the like of each of the adhesive layers 35, 36, and 37, and to perform a so-called single coating, or to use a bead gun. Spiral spray gun, Ω-shaped spray gun, transfer roller, etc. as an adhesive coating machine The pattern is applied in a straight line, a spiral shape, an Ω shape, or a dot shape.

The hook material 42 and the base material sheet 41 that form the fastening tape 4 can be used without any particular limitation as long as they are generally used for absorbent articles such as disposable diapers. For example, as the hook material 42, "Magic Tape (registered trademark)" (manufactured by Kuraray Co., Ltd.), "QUICKLON (registered trademark)" (manufactured by YKK), and "Magicloth (registered trademark)" (Kanebo Bell-Touch) can be used. Hook-face components such as those manufactured by the company. As the tape substrate sheet 41, a synthetic resin such as polyethylene, polypropylene or polyethylene terephthalate, or a sheet or nonwoven fabric containing a composite material of two or more kinds of these synthetic resins can be used.

The stretchable side panel 3 included in the disposable diaper of the present invention is not limited in any way, and can be produced by any method.

A preferred example of the method for producing the side panel in the disposable diaper is as an example of the case where the stretchable side panel 3 in the diaper 1A is produced.

An example of a preferred manufacturing method of the stretchable side panel 3 will be described with reference to Fig. 6. The apparatus 7 for manufacturing a stretchable sheet shown in Fig. 6 includes a pair of vertical structures 71 and 71 for wire transport. The elastic winding mechanism 72 is configured to wind the elastic member around the pair of linear structures for linear transport, and to make the orientation of the elastic member into a longitudinal structure for the wire transport. The direction in which the longitudinal direction (the direction in the figure is R) intersects, and the integration mechanism 73 that sandwiches the elastic member 33 that is wound by the elastic body winding mechanism 72 and is transported by the linear structure for linear transport. The sheets 31' and 32' are integrated. As the linear transporting longitudinal structure 71, it is preferable to use an antegrade portion that moves in the R direction and a return portion that moves in the opposite direction to the R direction, and only the antegrade portion is engaged with the elastic member 33 toward the R direction. The endless belt of the elastic member 33 is conveyed. The endless belt is erected on a pulley or a gear to drive the pulley or the gear to rotate. In addition, as for each of the linear transporting longitudinal structures 71, it is also possible to use only one endless belt as described above. However, as shown in Fig. 6, it is preferable to use the upper and lower sections as the respective vertical transporting structures 71 for line transport. The endless belt belt as described above. By setting the speed difference in the upper and lower belts, At the beginning of the winding of the pair of linear transporting longitudinal structures 71 and 71, the orientation of the sawtooth-shaped elastic member 33 is corrected so that the elastic member 33 is inclined in a substantially parallel manner in the R direction, or elastic. The member 33 is fixed between the pair of strip-shaped sheets 31' and 32' after being aligned in a state in which the plurality of the spacers 33 are aligned in the R direction. As the linear structure for linear transport 71, a circular rod-like body in which a groove or a ridge is spirally formed on the circumferential surface and is rotationally driven around the central axis can be used.

In the preferred manufacturing method of the side panel 3, as shown in FIG. 6, the body side adhesive layer 35, the outer adhesive layer 36, and the intermediate fixing portion 37 can be formed by a known adhesive applicator 76. The adhesive 34 is continuously applied in a strip shape to the strip-shaped sheet 31' which is a raw material sheet of the sheet 31. Further, the adhesive 34 may be continuously applied to the strip sheet 32'.

Then, the two strip-shaped sheets 31' and 32' which have been coated with the adhesive are joined together so that the elastic members 33 which are inclined in a plurality of parallel inclined states are joined together, and are used as one of the integrated mechanisms 73. The nip roller 74 is integrated by pressurization from top to bottom. Then, the elastic member 33 that has been extended to the side is cut by the cutting mechanism 77 such as a cutter having a cutting blade, thereby obtaining a stretchable sheet of the elastic member 33 including a plurality of parallel inclined states. 3'.

Then, the obtained stretchable sheet 3' is sequentially cut into the length of each of the side sheets 3 by an arbitrary cutting mechanism. In this way, the stretchable side panels 3 can be continuously produced with high efficiency.

The diaper 1A can be manufactured, for example, as follows, by using the continuum (stretch sheet 3') of the side panel 3 described above.

Specifically, for example, the diaper 1A can be efficiently produced by the following procedures (1) to (9) by using the continuous body (the stretchable sheet 3') of the side sheet 3 described above.

(1) The continuous web of the adhesive web 4 including the fastening portion 41 is coated with a continuous web of the adhesive agent 62, which is sequentially cut into the length of each of the fastening tapes 4, and intermittently mounted in the above manner. The obtained stretchable sheet 3'. (2) The fastening tape 4 is folded and temporarily fixed to the elastic sheet 3'. (3) The stretch sheet 3' is sequentially cut into the length of each of the side sheets 3. (4) in other steps In the middle, the both sides of the continuous sheet are folded to obtain the side sheets 24. The elastic member 25 is fixed to the folded top of one of the folded sheets by an adhesive in an extended state, and the elastic member 26 is fixed to the other folded top portion in an extended state by an adhesive. (5) In another step, a top sheet continuous body in which the obtained side sheet 24 and the front sheet 21 are fixed by heat sealing or the like is formed. (6) In another step, the resin film is integrated with the outer layer non-woven fabric via the adhesive layer to form a continuous body of the back sheet 22. (7) The side portion on the outer side of the back sheet 22 is continuously coated with an adhesive, and the side sheet 3 to which the fastening tape 4 is attached is fixed to the back sheet continuous body via the adhesive. (8) Between the back sheet continuous body and the top sheet continuous body on which the side sheets 3 are attached, the absorbent body 23 is intermittently arranged in the flow direction, and is fixed by means of an adhesive fixing to form a continuous diaper 1A. body. (9) The continuum of the diaper 1A was cut into each product, and the diaper 1A was continuously manufactured.

Regarding the manufacturing method of the disposable diaper, in addition to the side panel 3 obtained in the above manner, the disposable diaper can be manufactured according to a previously known method.

Next, the effect of the diaper 1A according to the embodiment of the present invention described above will be described.

As shown in FIGS. 2 and 3, the stretchable side panel 3 has a simple shape in which both end edges 3u and 3d of the absorbent main body longitudinal direction (Y direction) extend in parallel in an extended state. In this manner, the side panel 3 of the diaper 1A has a shape in which the trimming loss is small at the time of manufacture. Moreover, as shown in FIG. 2, the diaper 1A is the edge part 33I of the elastic member 33c with respect to the elastic member 33c arrange|positioned by the at least the lower part C side of the several elastic members 33 which comprise the side panel 3, One of the ends 33I of 33O is located between the body side adhesive layer 35 and the outer adhesive layer 36, and the other end portion 33O is located at the outer adhesive layer 36. Therefore, the contraction force of the elastic member 33c which is the closest to the lower c-side of the lowermost end portion becomes weak. One end portion 33I of the lowermost end elastic member 33c is fixed to be weaker than the other end portion 33O. Therefore, if it is strongly stretched, the elastic member (rubber line) is liable to fall off at the one end portion 33I. Therefore, it is easy to leave an offset on the leg circumference by wearing the diaper 1A (refer to FIG. 5). The elastic member 33c closest to the crotch portion C side does not easily leave an offset on the leg circumference, so that the feeling of use is improved. Since the other end portion 33O is located on the outer adhesive layer 36, if the adhesive tape 4 is stretched when worn, the elastic member at the other end portion 33O is also stretched, and when a strong stretch is generated, The other end portion 33O, the elastic member is easily detached, and in particular, the portion where the lower end of the stretchable side panel 3 and the absorbent body 2 intersect is close to a right angle, so that the skin at the leg circumference is easily caught, and the elastic member is not fixed at the above portion. The Ministry will further reduce the pressure on the legs, etc., so it is better. Further, the effect as described above is that one of the end portions 33I, 33O of the elastic member 33c is located on the body side adhesive layer 35 and the outer adhesive layer before the state in which the disposable diaper 1A is worn on the wearer is completed. The effect is exerted between 36, and the other end portion is located on the body side adhesive layer 35 or the outer adhesive layer 36. Usually, the elastic member 33 is not stretched as it is released from the time of production until the consumer uses it, and the stretching as described above starts to occur at the time of wearing.

Further, as shown in Fig. 2 and Fig. 3, the diaper 1A is elastically disposed at least on the side closest to the crotch portion C of the plurality of elastic members 33 constituting the side panel 3 in the stretchable side panel 3 in an extended state. In the member 33c, the extending direction thereof intersects with the extending direction of the end edges 3u, 3d of the side sheet 3 in the Y direction at an intersection angle θ1. Therefore, according to the action in the wearing process of the disposable diaper 1A, one of the end portions 33I of the elastic members 33c closest to the crotch portion C side is easily moved to the body side adhesive layer 35 and the outer adhesive layer. Between 36, the above effects can be achieved.

Further, the diaper 1A is different from the diapers 1B to 1I of the second to ninth embodiments described below, and as shown in Fig. 2, the plurality of elastic members constituting the side panel 3 are formed in the stretchable side panel 3 in an extended state. 33 and the elastic members 33c disposed on the crotch portion C side intersecting with the extending direction of the end edges 3u and 3d in the Y direction of the side sheet 3 at the intersection angle θ1 are substantially parallel to each other at substantially equal intervals in the Y direction. Thereby, it becomes an arrangement which further applies the contraction force of the elastic member 33 to the leg circumference. Therefore, when the fastening tape 4 is stretched, it exerts an effect of further adhering to the leg circumference of the wearer and is less likely to fall off. Diaper as described above In the design of 1A, it is more important to exert the above effects.

Further, as shown in FIG. 3, the diaper 1A is fixed to the sheets 31 and 32 constituting the side sheets 3 by sealing, the end portions 33O of the plurality of elastic members 33 are sealed outward from the outer adhesive layer 36 in the X direction. Therefore, in the elastic member 33 disposed other than the elastic member 33c closest to the crotch portion C side, the adhesive tape 4 is stretched for wearing the diaper 1A, and the stretchable side panel 3 is stretched for the first time. The elastic member 33 fixed by the seal is stretched, so that one end portion 33I of the both end portions 33I, 33O of the elastic member 33 is easily moved between the body side adhesive layer 35 and the outer adhesive layer 36, further exerting the above effects. .

Next, a disposable diaper according to the second to ninth embodiments of the present invention will be described with reference to Figs. 7 to 14 . The diapers 1B to 1I of the second to ninth embodiments are mainly different from the diaper 1A of the first embodiment, and the same reference numerals will be given to the same portions, and the description thereof will be omitted. The description relating to the diaper 1A of the first embodiment will be appropriately applied to the aspects which are not particularly mentioned.

In the diaper 1B of the second embodiment, as shown in Fig. 7, in the same manner as the diaper 1A, the stretchable side sheets 3 are formed in a rectangular shape in a planar state, and not only the both end edges 3u in the Y direction. 3d extends parallel to each other, and the side edges 3i, 3o along the Y direction also extend parallel to each other, and the extending directions of the end edges 3u, 3d intersect at right angles to the extending directions of the side edges 3i, 3o. Further, in the diaper 1B, similarly to the diaper 1A, the extending direction of the side edges 3i, 3o of the side sheets 3 in the Y direction is parallel to the longitudinal direction (Y direction) of the absorbent body 2 of the absorbent body 2, The side portions 2S of the back side portion B of the absorbent body 2 are respectively attached with the stretchable side sheets 3.

In the diaper 1B of the second embodiment, as shown in FIG. 7, each of the elastic members 33 is such that the extending direction thereof intersects with the extending direction of the edge edges 3u and 3d of the side sheet 3 in the Y direction at an intersection angle θ2. In a state in which the X direction is elongated obliquely, they are arranged at substantially equal intervals in the Y direction. The angle of intersection θ2 is preferably 150° or more, more preferably 160° or more, from the viewpoints of stretchability, conformability, aesthetics, etc., and preferably, is not up to 180°, more preferably 175° or less, specifically, 150° or more and less than 180°, and further preferably 160° or more and 175° or less. Further, as described above, in the diaper 1B, the extending direction of the side edges 3i, 3o of the rectangular side sheets 3 in the Y direction is parallel to the longitudinal direction (Y direction) of the absorbent body 2 of the absorbent body 2, and therefore, The direction in which the elastic member 33 extends is also intersected with the width direction (X direction) of the absorbent body 2 at an intersection angle θ2.

In the side panel 3 of the diaper 1B formed as described above, as shown in Fig. 7, in the stretched state of the stretchable side panel 3, it is disposed at both ends of the elastic member 33c closest to the crotch portion C side (close to The end portion 33O on the outer side of the end portion 33I of the center line CL and the end portion 33O) on the outer side in the X direction is located between the body side adhesive layer 35 and the outer adhesive layer 36, and is located at the end portion 33I close to the center line CL. The body side adhesive layer 35.

The side panel 3 of the stretchable diaper 1B can be manufactured by changing the speed difference of the upper and lower belts in the manufacturing method of the side sheet 3 of the diaper 1A.

The effect of the use of the above diaper 1B will be described.

The effect of the diaper 1B will be described with respect to the effect of the diaper 1A. The effect of the diaper 1A is the same as that of the diaper 1A, and the description of the effect of the diaper 1A can be suitably applied.

The diaper 1B is placed in the stretchable side panel 3 in an extended state, and as shown in Fig. 7, the diaper 1B is disposed such that the contraction force is applied to the waist end side. Therefore, when the stretched fastening tape 4 is worn, it is further attached to the back side of the wearer, and the gap is not easily formed, thereby preventing the effect of leakage of excrement from the back.

In the diaper 1C of the third embodiment, as shown in Fig. 8, the stretchable side panels 3 are formed in a rectangular shape in a planar state in the same manner as the diaper 1A, and not only the both end edges 3u in the Y direction, 3d extends parallel to each other, and the side edges 3i, 3o in the Y direction also extend parallel to each other, and the extending directions of the end edges 3u, 3d intersect the extending directions of the side edges 3i, 3o at right angles. Further, in the diaper 1C, similarly to the diaper 1A, the direction in which the side edges 3i and 3o of the side sheets 3 extend in the Y direction and the absorbent body length direction of the absorbent body 2 (Y side) In the parallel manner, the side panels 3 which are stretchable are attached to the both side portions 2S of the back side portion B of the absorbent body 2, respectively.

In the diaper 1C of the third embodiment, as shown in FIG. 8, in the elastic member 33 constituting the stretchable side panel 3, the elongation direction of one of the plurality of elastic members 33 and the plurality of elastic members The direction of elongation of the remaining elastic members 33B in 33 intersects. When the details are described, the elastic member 33 constituting the side panel 3 of the diaper 1C includes the first elastic member 33A and the second elastic member 33B, and the direction in which the first elastic member 33A extends and the direction in which the second elastic member 33B extends. The intersection angle θ3 is crossed so as to be inclined in the X direction and alternately arranged in the Y direction. The intersection angle θ3 is preferably 5° or more, more preferably 10° or more, and is preferably 30° or less, and more preferably 20° or less, from the viewpoints of stretchability, conformability, and appearance. Specifically, it is preferably 5° or more and 30° or less, and more preferably 10° or more and 20° or less. The distance between the first elastic members 33A adjacent in the Y direction is preferably 6 mm or more and 30 mm or less from the viewpoint of stretchability, conformability, and flexibility. The interval between the adjacent second elastic members 33B in the Y direction is the same as the interval between the first elastic members 33A adjacent in the Y direction.

In the side panel 3 of the diaper 1C formed as described above, as shown in Fig. 8, in the stretched state of the stretchable side panel 3, the first elastic member 33A is disposed on the elastic member 33c closest to the crotch portion C side. The end portion 33I of the both end portions (the end portion 33I near the center line CL and the end portion 33O on the outer side in the X direction) near the center line CL is located between the body side adhesive layer 35 and the outer adhesive layer 36, and The outer end portion 33O in the X direction is located on the outer adhesive layer 36.

The side panel 3 of the stretchable diaper 1C can be manufactured by changing the speed difference of the upper and lower belts in the manufacturing method of the side sheet 3 of the diaper 1A.

The effect of the use of the above diaper 1C will be described.

The effect of the diaper 1C will be described with respect to the effect of the diaper 1A. The effect of the diaper 1A is the same as that of the diaper 1A, and the description of the effect of the diaper 1A can be suitably applied.

In the diaper 1C of the third embodiment, as shown in FIG. 8, in the elastic member 33 constituting the stretchable side panel 3, the elongation direction of one of the plurality of elastic members 33 and the plurality of elastic members The direction of elongation of the remaining elastic members 33B in 33 intersects. Therefore, the contraction force is applied to both the waist end side and the leg circumference, and the wearer's movement or body shape is flexibly responded to, and the compliance is improved.

In the diaper 1D of the fourth embodiment, as shown in Fig. 9, the stretchable side panels 3 are formed in a rectangular shape in a state of being planarly developed, similarly to the diaper 1A, and not only the both end edges 3u of the Y direction, 3d extends parallel to each other, and the side edges 3i, 3o in the Y direction also extend parallel to each other, and the extending directions of the end edges 3u, 3d intersect the extending directions of the side edges 3i, 3o at right angles. Further, in the diaper 1D, similarly to the diaper 1A, the direction in which the side edges 3i, 3o of the side sheets 3 in the Y direction extend is parallel to the longitudinal direction (Y direction) of the absorbent body 2 of the absorbent body 2, The side portions 2S of the back side portion B of the absorbent body 2 are respectively attached with the stretchable side sheets 3.

In the diaper 1D of the fourth embodiment, as shown in FIG. 9, in the elastic member 33 constituting the stretchable side panel 3, the elongation direction of one of the plurality of elastic members 33D and the plurality of elastic members The direction of elongation of the remaining elastic members 33E in 33 intersects. When the details are described, the elastic member 33 constituting the side panel 3 of the diaper 1D includes the third elastic member 33D and the fourth elastic member 33E, and the central portion of the side panel 3 in the X direction, and the third elastic member 33D. The fourth elastic member 33E is inclined in the X direction so as to intersect the intersection angle θ4, and is alternately arranged in the Y direction. The intersection angle θ4 is preferably 5° or more, more preferably 10° or more, and is preferably 30° or less, and more preferably 20° or less, from the viewpoints of stretchability, conformability, and appearance. Specifically, it is preferably 5° or more and 30° or less, and more preferably 10° or more and 20° or less. The distance between the adjacent third elastic members 33D in the Y direction is preferably 3 mm or more and 15 mm or less from the viewpoint of stretchability, conformability, and flexibility. The fourth elastic members 33E adjacent in the Y direction are spaced apart from each other by the same distance from the third elastic members 33D adjacent to each other in the Y direction.

In the side panel 3 of the diaper 1D formed as described above, as shown in Fig. 9, in the stretched state of the stretchable side panel 3, the third elastic member 33D is disposed on the elastic member 33c closest to the crotch portion C side. The end portion 33I of the both end portions (the end portion 33I near the center line CL and the end portion 33O on the outer side in the X direction) near the center line CL is located between the body side adhesive layer 35 and the outer adhesive layer 36, and The outer end portion 33O in the X direction is located on the outer adhesive layer 36. Further, the end portion 33O of the outer side of the elastic member 33c of the fourth elastic member 33E disposed closest to the crotch portion C side (the end portion 33I near the center line CL and the end portion 33O on the outer side in the X direction) is also Located between the body side adhesive layer 35 and the outer adhesive layer 36, and the end portion 33I near the center line CL is located on the body side adhesive layer 35.

As shown in FIG. 9, when the elastic members 33D and 33E are crossed, the elastic member at the lowermost end and the lower end edge of the stretch panel 3 are the lowermost end, and the elastic member from the outer side and the absorbent body 2 are provided. When two elastic members of the side traverse the lower end edge of the stretch panel 3, the two elastic members are the lowermost elastic members.

The side panel 3 of the stretchable diaper 1D can be produced by changing the speed difference between the upper and lower belts in the manufacturing method of the side panel 3 of the diaper 1A described above.

The effect of the use of the above diaper 1D will be described.

The effect of the diaper 1D will be described with respect to the effect of the diaper 1A. The effect of the diaper 1A is the same as that of the diaper 1A, and the description of the effect of the diaper 1A can be suitably applied.

In the diaper 1D of the fourth embodiment, as shown in FIG. 9, in the elastic member 33 constituting the stretchable side panel 3, the elongation direction of one of the plurality of elastic members 33D and the plurality of elastic members The direction of elongation of the remaining elastic members 33E in 33 intersects. Therefore, the contraction force is applied to both the waist end side and the leg circumference, and the wearer's movement or body shape is flexibly responded to, and the compliance is improved.

In the diaper 1E of the fifth embodiment, as shown in Fig. 10, the stretchable side panels 3 are stretched in parallel in the planar direction, and the side edges 3i, 3o in the Y direction are extended in parallel with each other. The extending direction of the side edges 3i, 3o of the side panel 3 and the extending direction of the edge edges 3u, 3d of the side panel 3 in the Y direction do not intersect at right angles. That is, the side panel 3 of the diaper 1E is formed into a parallelogram shape in an extended state as shown in FIG. The extending direction of the side edges 3i, 3o of the side panel 3 and the extending direction of the edge edges 3u, 3d of the side sheet 3 in the Y direction intersect at an intersection angle θ5. The intersection angle θ5 is preferably 60° or more, more preferably 70° or more, and is preferably 85° or less, and more preferably 80° or less, from the viewpoints of stretchability, conformability, and appearance. Specifically, it is preferably 60° or more and 85° or less, and more preferably 70° or more and 80° or less.

Further, in the diaper 1E, similarly to the diaper 1A, the extending direction of the side edges 3i, 3o of the side sheets 3 in the Y direction is parallel to the longitudinal direction (Y direction) of the absorbent body 2 of the absorbent body 2, The side portions 2S of the back side portion B of the absorbent body 2 are respectively attached with the stretchable side sheets 3.

In the diaper 1E of the fifth embodiment, as shown in FIG. 10, each of the elastic members 33 is such that the extending direction thereof intersects with the extending direction of the edge edges 3u and 3d of the side sheet 3 in the Y direction at an intersection angle θ6. In a state in which the X direction is elongated obliquely, they are arranged at substantially equal intervals in the Y direction. The cross angle θ6 is not particularly limited in view of flexibility, conformability, and appearance, and is preferably more than 0°, more preferably 5° or more, and further preferably 30° or less. Further, it is preferably 20 or less, and more preferably 0 or more and 30 or less, and more preferably 5 or more and 20 or less.

Further, as described above, in the diaper 1E, the extending direction of the side edges 3i, 3o of the side sheets 3 in the Y direction is parallel to the longitudinal direction (Y direction) of the absorbent body 2 of the absorbent body 2, but the elastic member 33 is The direction of elongation intersects with the width direction (X direction) of the absorbent body 2 at an intersection angle θ7. The intersection angle θ7 is preferably -10° or more, more preferably -5° or more, and is preferably 10° or less, and further preferably 5°, from the viewpoints of stretchability, conformability, and appearance. Hereinafter, specifically, it is preferably -10 or more and 10 or less, more preferably -5 or more and 5 or less.

In the side panel 3 of the diaper 1E formed in the above manner, as shown in FIG. 10, in the stretchability In the extended state of the side panel 3, the end portions of the elastic members 33c closest to the crotch portion C (the end portions 33I near the center line CL and the end portions 33O outside the X direction) are close to the center line CL. The end portion 33I is located between the body side adhesive layer 35 and the outer adhesive layer 36, and the outer end portion 33O in the X direction is located on the outer adhesive layer 36.

The stretchable sheet 3 of the diaper 1E can be tilted in order by changing the speed difference between the upper and lower belts in the manufacturing method of the side sheet 3 of the diaper 1A by using any cutting mechanism. It is cut and manufactured.

The effect of the use of the above diaper 1E will be described.

The effect of the diaper 1E will be described with respect to the effect of the diaper 1A. The effect of the diaper 1A is the same as that of the diaper 1A, and the description of the effect of the diaper 1A can be suitably applied.

In the diaper 1E of the fifth embodiment, as shown in Fig. 10, the stretchable side panels 3 are stretched in parallel in a planar shape, and the side edges 3i, 3o in the Y direction extend parallel to each other, and the side panels are stretched. The extending direction of the side edges 3i, 3o of the third side and the extending direction of the end edges 3u, 3d of the side sheet 3 in the Y direction do not intersect at right angles. Therefore, the circumference of the leg circumference and the waist circumference is increased, in particular, the distance from the intersection of the edge 3u of the side sheet 3 in the Y direction and the side edge 2S1 of the absorbent body to the fastening tape 4 is large, so the circumference of the waist circumference The increase in length is particularly difficult, and it is not easy to tighten the abdominal circumference when the abdominal circumference of the infant is low.

Further, in the diaper 1E of the fifth embodiment, as shown in FIG. 10, the elastic member 33 is disposed in the direction in which the elastic member 33c closest to the crotch portion C is extended and the width direction of the absorbent body 2 (X direction). Roughly parallel. Therefore, when the adhesive tape 4 is stretched, the stretching directions of the both side sheets 3, 3 are substantially parallel and along the waistline direction, so that the maximum contraction force is applied to the most concave position of the wearer's waist, the back The partial conformability is improved, and the contraction force of the elastic member 33c on the lower C side is weakened, so that it is not easy to leave a mark at the leg circumference.

In the diaper 1F of the sixth embodiment, as shown in Fig. 11, the stretchable side panels 3 are stretched in parallel in the planar direction, and the side edges 3i, 3o in the Y direction are extended in parallel with each other. The extending direction of the side edges 3i, 3o of the side panel 3 and the extending direction of the edge edges 3u, 3d of the side panel 3 in the Y direction do not intersect at right angles. That is, the side panel 3 of the diaper 1F is formed into a parallelogram shape in an extended state as shown in FIG. The extending direction of the side edges 3i, 3o of the side panel 3 and the extending direction of the edge edges 3u, 3d of the side sheet 3 in the Y direction intersect at an intersection angle θ8. The intersection angle θ8 is preferably 95° or more, more preferably 100° or more, and is preferably 120° or less, and more preferably 110° or less, from the viewpoints of stretchability, conformability, and appearance. Specifically, it is preferably 95° or more and 120° or less, and more preferably 100° or more and 110° or less.

Further, in the diaper 1F, similarly to the diaper 1A, the extending direction of the side edges 3i, 3o of the side sheets 3 in the Y direction is parallel to the longitudinal direction (Y direction) of the absorbent body 2 of the absorbent body 2, The side portions 2S of the back side portion B of the absorbent body 2 are respectively attached with the stretchable side sheets 3.

In the diaper 1F of the sixth embodiment, as shown in FIG. 11, each of the elastic members 33 is such that the extending direction thereof intersects with the extending direction of the end edges 3u and 3d of the side sheet 3 in the Y direction at an intersection angle θ9. In a state in which the X direction is elongated obliquely, they are arranged at substantially equal intervals in the Y direction. The intersection angle θ9 is preferably 150° or more, more preferably 160° or more, and is preferably less than 180°, and more preferably 175° or less, from the viewpoints of stretchability, conformability, and appearance. Specifically, it is preferably 150° or more and less than 180°, and more preferably 160° or more and 175° or less.

Further, as described above, in the diaper 1F, the direction in which the side edges 3i, 3o of the side sheets 3 in the Y direction extend is parallel to the longitudinal direction (Y direction) of the absorbent body 2, but the elastic member 33 The direction of elongation intersects with the width direction (X direction) of the absorbent body 2 at an intersection angle θ10. The intersection angle θ10 is preferably 170° or more, more preferably 175° or more, and is preferably 190° or less, and further preferably 185° or less, from the viewpoints of stretchability, conformability, and appearance. Specifically, it is preferably 170° or more and 190° or less, and more preferably 175° or more and 185° or less.

In the side panel 3 of the diaper 1F formed in the above manner, as shown in FIG. 11, the stretchability is shown in FIG. In the extended state of the side panel 3, the end portion 33O of the outer side of the end portion (the end portion 33I near the center line CL and the end portion 33O on the outer side in the X direction) of the elastic member 33c closest to the crotch portion C side is disposed. Located between the body side adhesive layer 35 and the outer adhesive layer 36, and the end portion 33I near the center line CL is located on the body side adhesive layer 35.

The stretchable sheet 3 of the diaper 1F can be tilted by changing the speed difference between the upper and lower belts in the manufacturing method of the side sheet 3 of the diaper 1A by using any cutting mechanism. It is cut and manufactured in order.

The effect of the use of the above diaper 1F will be described.

The effect of the diaper 1F will be described with respect to the effect of the diaper 1A. The effect of the diaper 1A is the same as that of the diaper 1A, and the description of the effect of the diaper 1A can be suitably applied.

In the diaper 1F of the sixth embodiment, as shown in Fig. 11, the stretchable side panels 3 are stretched in parallel in a planar shape, and the side edges 3i, 3o in the Y direction extend parallel to each other, and the side panels are stretched. The extending direction of the side edges 3i, 3o of the third side and the extending direction of the end edges 3u, 3d of the side sheet 3 in the Y direction do not intersect at right angles. Therefore, the circumference of the leg circumference and the waist circumference is increased, in particular, the distance from the intersection of the edge 3d of the side piece 3 in the Y direction and the side edge 2S1 of the absorbent body up to the fastening tape 4 is large, so the leg circumference The circumference is particularly increased, and it is not easy to leave a mark on the leg circumference when the activity of the leg is relatively active as in the case of a child of high age.

Further, in the diaper 1F of the sixth embodiment, as shown in Fig. 11, the elastic member 33 is disposed in the extending direction of the elastic member 33c closest to the crotch portion C side and the width direction (X direction) of the absorptive main body 2. Roughly parallel. Therefore, when the adhesive tape 4 is stretched, the stretching directions of the both side sheets 3, 3 are substantially parallel and along the waistline direction, so that the maximum contraction force is applied to the most concave position of the wearer's waist, and the back is applied. The partial conformability is improved, and the contraction force of the elastic member 33c on the lower C side is weakened, so that it is not easy to leave a mark at the leg circumference.

In the diaper 1G of the seventh embodiment, as shown in Fig. 12, the stretchable side panels 3 are stretched in parallel in the planar direction, and the side edges 3i, 3o in the Y direction are extended in parallel with each other. The extending direction of the side edges 3i, 3o of the side panel 3 and the extending direction of the edge edges 3u, 3d of the side panel 3 in the Y direction do not intersect at right angles. That is, the side panel 3 of the diaper 1G is formed into a parallelogram shape in an extended state as shown in Fig. 12 . The extending direction of the side edges 3i, 3o of the side panel 3 and the extending direction of the edge edges 3u, 3d of the side sheet 3 in the Y direction intersect at an intersection angle θ11. The intersection angle θ11 is preferably 60° or more, more preferably 70° or more, and is preferably 85° or less, and more preferably 80° or less, from the viewpoints of stretchability, conformability, and appearance. Specifically, it is preferably 60° or more and 85° or less, and more preferably 70° or more and 80° or less.

Further, in the diaper 1G, the extending direction of the side edges 3i, 3o of the side sheets 3 in the Y direction intersects with the absorbent body longitudinal direction (Y direction) of the absorbent body 2 at an intersection angle θ12. The cross angle θ12 is not particularly limited in view of stretchability, conformability, or adhesion of side sheets, and is preferably more than 0°, more preferably 5° or more, and is preferably 25° or less, further preferably 20° or less, specifically, more preferably 0° or more and 25° or less, further preferably 5° or more and 20° or less.

In the diaper 1G of the seventh embodiment, as shown in FIG. 12, each of the elastic members 33 is such that the extending direction thereof intersects with the extending direction of the edge edges 3u and 3d of the side sheet 3 in the Y direction at an intersection angle θ13. In a state in which the X direction is elongated obliquely, they are arranged at substantially equal intervals in the Y direction. The intersection angle θ13 is preferably 5° or more, more preferably 10° or more, and is preferably 30° or less, and more preferably 20° or less, from the viewpoints of stretchability, conformability, and appearance. Specifically, it is preferably 5° or more and 30° or less, and more preferably 10° or more and 20° or less.

Further, as described above, in the diaper 1G, the extending direction of the side edges 3i, 3o of the side sheets 3 in the Y direction intersects with the absorbent body longitudinal direction (Y direction) of the absorbent body 2, but the side sheets 3 are The extending direction of the end edges 3u and 3d in the Y direction is parallel to the width direction (X direction) of the absorbent body 2, so that the extending direction of the elastic member 33 and the width direction (X direction) of the absorbent body 2 intersect at an intersection angle θ13.

In the side panel 3 of the diaper 1G formed in the above manner, as shown in FIG. 12, in the stretchability In the extended state of the side panel 3, the end portions of the elastic members 33c closest to the crotch portion C (the end portions 33I near the center line CL and the end portions 33O outside the X direction) are close to the center line CL. The end portion 33I is located between the body side adhesive layer 35 and the outer adhesive layer 36, and the outer end portion 33O in the X direction is located on the outer adhesive layer 36.

The stretchable sheet 3' obtained by changing the speed difference between the upper and lower belts in the manufacturing method of the side sheet 3 of the diaper 1A described above can be inclined by the use of any cutting mechanism. It is cut and manufactured in order. Moreover, the diaper 1G can be manufactured by the side part 3 in the manufacturing process of the diaper 1A, and the side sheet 3 is slant-fixed to the side of the outer side of the back surface sheet 22 by the adhesive agent.

The effect of the use of the above diaper 1G will be described.

The effect of the diaper 1G will be described with respect to the effect of the diaper 1A. The effect of the diaper 1A is the same as that of the diaper 1A, and the description of the effect of the diaper 1A can be suitably applied.

In the diaper 1G of the seventh embodiment, as shown in Fig. 12, the stretchable side panels 3 are stretched in parallel in a planar shape, and the side edges 3i, 3o in the Y direction extend parallel to each other, and the side panels are stretched. The extending direction of the side edges 3i, 3o of the third side and the extending direction of the end edges 3u, 3d of the side sheet 3 in the Y direction do not intersect at right angles. Therefore, on the crotch side of the fastening tape 4, the distance from the side edge 2S1 of the absorbent body 2 becomes larger, so that the circumference of the leg circumference increases, and when the activity of the leg is more active as in the case of a child of high age. It is not easy to leave a mark on the leg circumference.

Further, in the diaper 1G of the seventh embodiment, as shown in Fig. 12, the direction in which the side edges 3i and 3o of the side sheets 3 extend in the Y direction and the longitudinal direction of the absorbent body (Y direction) of the absorbent body 2 are The intersection angle θ12 intersects. Therefore, in the stretchable side panel 3 in the stretched state, the elastic member is further disposed to apply a contraction force to the leg circumference, thereby preventing leakage from the leg circumference.

In the diaper 1H of the eighth embodiment, as shown in Fig. 13, the stretchable side panel 3 is formed into a rectangular shape in the same manner as the diaper 1A in an extended state in a planar shape, not only the Y side. The two end edges 3u, 3d extend parallel to each other, and the side edges 3i, 3o along the Y direction also extend parallel to each other, and the extending directions of the end edges 3u, 3d and the extending directions of the side edges 3i, 3o are Cross at right angles.

Further, in the diaper 1H, the extending direction of the side edges 3i, 3o of the rectangular side sheets 3 in the Y direction intersects with the absorbent body longitudinal direction (Y direction) of the absorbent body 2 at an intersection angle θ14. The angle of intersection θ14 is preferably 5° or more, more preferably 10° or more, and further preferably 20° or less, and more preferably from the viewpoint of stretchability or conformability and adhesion of the side sheets. 15° or less, specifically, it is preferably 5° or more and 20° or less, and more preferably 10° or more and 15° or less.

In the diaper 1H, as shown in Fig. 13, each of the elastic members 33 is elongated obliquely with respect to the X direction so that the extending direction thereof and the extending direction of the end edges 3u and 3d of the side sheet 3 in the Y direction intersect at an intersecting angle θ15. In this state, they are arranged at substantially equal intervals in the Y direction. The intersection angle θ15 is preferably 150° or more, more preferably 160° or more, and is preferably less than 180°, and more preferably 175° or less, from the viewpoints of stretchability, conformability, and appearance. Specifically, it is preferably 150° or more and less than 180°, and more preferably 160° or more and 175° or less.

Further, in the diaper 1H, as shown in Fig. 13, the extending direction of the side edges 3i, 3o of the side sheets 3 in the Y direction intersects with the longitudinal direction (Y direction) of the absorbent body of the absorbent body 2 at an intersection angle θ14. The direction in which the elastic member 33 is elongated intersects with the width direction (X direction) of the absorbent body 2 at an intersection angle θ16. The angle of intersection θ16 is preferably -10° or more, more preferably -5° or more, and is preferably 10° or less, and further preferably 5°, from the viewpoints of stretchability, conformability, and aesthetics. Hereinafter, specifically, it is preferably -10 or more and 10 or less, more preferably -5 or more and 5 or less.

In the side panel 3 of the diaper 1H formed as described above, as shown in Fig. 13, in the stretched state of the stretchable side panel 3, it is disposed at both ends of the elastic member 33c closest to the crotch portion C side (close to The end of the end portion 33I of the center line CL and the end portion 33O of the outer side in the X direction The portion 33O is located between the body side adhesive layer 35 and the outer adhesive layer 36, and the end portion 33I near the center line CL is located on the body side adhesive layer 35.

The side panel 3 of the stretchable diaper 1H can be manufactured by changing the speed difference of the upper and lower belts in the manufacturing method of the side sheet 3 of the diaper 1A. Moreover, the diaper 1H can be manufactured by the side part 3 in the manufacturing process of the diaper 1A, and the side sheet 3 is slant-fixed to the side of the outer side of the back surface sheet 22 by the adhesive agent.

The effect of the use of the above diaper 1H will be described.

The effect of the diaper 1H will be described with respect to the effect of the diaper 1A. The effect of the diaper 1A is the same as that of the diaper 1A, and the description of the effect of the diaper 1A can be suitably applied.

In the diaper 1H of the eighth embodiment, as shown in Fig. 13, the extending direction of the side edges 3i, 3o of the side sheets 3 in the Y direction and the longitudinal direction of the absorbent body (Y direction) of the absorbent body 2 are at an angle of intersection. Θ14 intersects. Therefore, on the crotch side of the fastening tape 4, the distance from the side edge 2S1 of the absorbent body 2 becomes larger, so that the circumference of the leg circumference increases, and when the activity of the leg is more active as in the case of a child of high age. It is not easy to leave a mark on the leg circumference.

Further, in the diaper 1H of the eighth embodiment, as shown in Fig. 13, the elastic member 33 is disposed in the extending direction of the elastic member 33c closest to the crotch portion C side and the width direction (X direction) of the absorptive main body 2. Roughly parallel. Therefore, when the adhesive tape 4 is stretched, the stretching directions of the both side sheets 3 and 3 are substantially parallel and along the waistline direction, so that the maximum contraction force is applied to the most concave position of the wearer's waist. Thereby, the conformability of the back portion is improved, and the contraction force of the elastic member 33c on the lower side C side is weakened, so that it is not easy to leave a mark at the leg circumference.

The absorbent article of the present invention is not limited to any of the diapers 1A to 1H of the first to eighth embodiments, and can be appropriately changed. Moreover, each of the components of the diapers 1A to 1H of the above-described first to eighth embodiments can be suitably combined in a range that does not impair the spirit of the present invention.

For example, in the diapers 1A to 1H of the above-described first to eighth embodiments, as shown in FIGS. 2, 4, and 7 to 13, all the extending directions of the plurality of elastic members 33 and the Y direction of the side sheets 3 are formed. The extending edges of the end edges 3u and 3d intersect each other. However, as in the diaper 11 of the ninth embodiment shown in Fig. 14, all the extending directions of the plurality of elastic members 33 constituting the side sheets 3 and the side sheets 3 may be Y. The direction in which the end edges 3u and 3d of the direction extend is parallel. Further, in the diaper 11 of the ninth embodiment, the end portion of the elastic member 33c closest to the crotch portion C side (the end portion 33I near the center line CL and the end portion 33O outside the X direction) is close to each other. The end portion 33I of the center line CL is located between the body side adhesive layer 35 and the outer adhesive layer 36, and the outer end portion 33O in the X direction is located on the outer adhesive layer 36.

Further, in the diapers 1A to 1I of the first to ninth embodiments, as shown in Figs. 2, 4, and 7 to 14, the stretchable side sheets 3 are stretched in a planar state, not only Both end edges 3u and 3d in the Y direction extend in parallel with each other, and both side edges 3i and 3o in the Y direction also extend in parallel with each other, but only the both end edges 3u and 3d in the Y direction may extend in parallel with each other.

In the above embodiment, the following disposable diaper is further disclosed.

<1> A disposable diaper comprising a vertically long absorbent body comprising a liquid-retaining absorbent body, a front sheet disposed on a skin facing side of the absorbent body, and a front sheet disposed on the disposable diaper The back sheet of the non-skin facing surface of the absorbent body is divided into a ventral side portion on the ventral side of the wearer when worn, a back side portion on the back side, and the ventral side portion and the back side portion. The side portions of the lower portion of the absorbent body are respectively attached to the side portions extending in the width direction on both sides in the longitudinal direction of the absorbent body, and are mounted on the side portions of the side sheets along the longitudinal direction of the absorbent body. a fastening tape extending outward in the width direction, wherein the side panels are in an extended state, and both end edges of the absorbent body in the longitudinal direction extend parallel to each other, and include: two side panel sheets; a plurality of elastic members, etc. Fixed to The two side sheet sheets extend in the width direction; the body side adhesive layer is disposed on the end side of the plurality of elastic members on the absorbent body side and extends along the longitudinal direction of the absorbent body; a layer disposed on an end side of the outer side of the side panel of the elastic member and extending along a longitudinal direction of the absorbent body; and a plurality of intermediate adhesive layers disposed on the body side adhesive layer and Between the outer adhesive layers and extending along the longitudinal direction of the absorbent body; and interposing the main body side adhesive layer, the outer adhesive layer and the intermediate adhesive layer intermittently disposed on the length of the absorbent body The elastic member in an extended state in the direction is formed by being fixed between the two side sheet sheets, and the intermediate adhesive layer has a bonding strength which is weaker than a respective bonding strength of the main body side adhesive layer and the outer side adhesive layer. The elastic member disposed at least on the lowermost side of the crotch elastic member is one end portion of the end portions of the elastic member located on the main body side adhesive layer and the outer side Then between the adhesive layer and the other end portion of said printer positioned adhesive layer or said outer adhesive layer.

<2> The disposable diaper according to the above <1>, wherein the stretchable side panel is in an extended state, and the elastic layer disposed on the lowermost side of the lower side of the absorbent body is along both side edges along the longitudinal direction of the absorbent body. One of the end portions of the member is located between the body side adhesive layer and the outer adhesive layer.

<3> The disposable diaper according to the above <1>, wherein at least one of the plurality of elastic members disposed on the lowermost side of the crotch is in an extending direction and an absorbent body length direction of the side panel. The extension of the end edges intersects.

The disposable diaper of any one of the above-mentioned <1> to <3>, wherein at least the elastic member disposed at the lowermost side of the crotch is the elastic member. One of the end portions is located between the body side adhesive layer and the outer adhesive layer before the disposable diaper is worn in the wearer's state.

The disposable diaper according to any one of the above aspects, wherein the intermediate adhesive layer has a width narrower than a width of each of the main body side adhesive layer and the outer side adhesive layer.

The disposable diaper according to any one of the above-mentioned, wherein the one of the plurality of elastic members is an end portion on the outer side of the side panel and overlaps with the outer adhesive layer Or, in the outer side in the width direction, the outer side adhesive layer is fixed to the side sheet constituting the side sheet by sealing.

The disposable diaper according to any one of the above-mentioned items, wherein the elastic member disposed at least closest to the crotch side of the plurality of elastic members is in an extending direction thereof and the absorbent body The width direction intersects.

The disposable diaper of any one of the above-mentioned <1> to <7>, wherein the extending direction of one of the plurality of elastic members intersects with the extending direction of the remaining elastic members of the plurality of elastic members .

The disposable diaper of any one of the above-mentioned <1> to <8>, wherein the side panels are in an extended state, extending parallel to each other along both side edges of the longitudinal direction of the absorbent body, and the side panels The direction in which the side edges extend does not intersect the direction in which the end edges of the side sheets of the side panels in the longitudinal direction of the absorbent body extend at right angles.

<10> The disposable diaper according to the above <9>, wherein the side edges of the side panels extend in a direction The absorbent body of the absorbent body has a longitudinal direction crossing.

The disposable diaper of any one of the above-mentioned <1> to <10>, wherein the other end portion of the elastic member disposed closest to the lower crotch side is located on the outer adhesive layer.

The disposable diaper according to any one of the above aspects, wherein the side panel is attached to a back side portion of the absorbent body.

The disposable diaper according to any one of the above aspects, wherein the two side panel sheets constituting the stretchable side panel comprise a skin side sheet located on the opposite side of the skin and are located Non-skin side sheet that is not on the opposite side of the skin, and the skin side sheet and the non-skin side sheet are formed in a rectangular shape.

The disposable diaper of any one of the above-mentioned <1> to <13>, wherein the two side sheet sheets, that is, the skin side sheet and the non-skin side sheet are in a state of being planarly spread, and are longer than the elongation. The length of the above elastic member in the state.

The disposable diaper of any one of the above-mentioned <1> to <14>, wherein the two side sheet sheets, that is, the skin side sheet and the non-skin side sheet are formed into the same shape and the same size. Or the skin side sheet and the non-skin side sheet are different in length from the side edges of the absorbent body.

The disposable diaper according to any one of the above-mentioned <1>, wherein the extending direction of the elastic member in the stretchable side panel and the extending direction of the end edge of the side panel in the longitudinal direction The crossing angle is greater than 0° and is 30° or less, preferably 5° or more and 20° or less.

<17> The disposable diaper according to any one of the above aspects, wherein the elastic members adjacent to each other in the longitudinal direction of the stretchable side sheets are spaced apart from each other by 3 mm or more and 15 mm or less.

The disposable diaper according to any one of the above aspects, wherein the elastic member disposed on the stretchable side panel has a linear shape and has a substantially circular, square, or polygonal cross section. Any shape.

<19> The disposable diaper according to the above <18>, wherein the linear elastic member in the stretchable side panel has a diameter or a width of 0.1 mm or more and 2 mm or less, preferably 0.1 mm or more and 1 mm or less. .

The disposable diaper of the above-mentioned <18> or <19>, wherein the number of the linear elastic members disposed on the stretchable side panel is two or more and 25 or less, preferably three. Above, 20 or less.

The disposable diaper according to any one of the above-mentioned <18>, wherein the linear elastic member disposed on the stretchable side panel is at an elongation of 100% (the natural state is set to 0%) One elastic member having a linear stress of 0.1 N or more and 1 N or less in elongation is disposed in a state in which the elongation is 50% or more and 300% or less, preferably at an elongation of 100. It is fixed in a state in which the range of % or more and 250% or less is extended.

The disposable diaper of any one of the above-mentioned <1> to <21> wherein the width of the intermediate adhesive layer is narrowed by 30% with respect to the width of each of the main body side adhesive layer and the outer side adhesive layer. The above is preferably narrowed by 50% or more.

<23> The disposable diaper according to any one of the above aspects, wherein the main body side adhesive layer, the outer side adhesive layer, and the intermediate adhesive layer extend in a longitudinal direction crossing the elastic member, and The entire length of the side panel of the above-mentioned stretchable side is in the longitudinal direction.

The disposable diaper according to any one of the above aspects, wherein the elastic member is fixed to the main body side adhesive layer and the outer adhesive in an extended state in the stretchable side panel. a layer and the intermediate adhesive layer, and in a natural state in which the elastic member contracts, a plurality of creases are formed on both sides of the side panel, and the creases are formed to extend in a longitudinal direction so as to intersect the plurality of the elastic members. And the crease is between the body side adhesive layer and the outer adhesive layer, and the two side panel sheets are convexly convex in a direction separating from the elastic member in each non-adjacent region due to shrinkage of the elastic member. On the other hand, in the intermediate adhesive layer, the elastic member is formed in a concave shape and has an uneven shape.

The disposable diaper according to any one of the above-mentioned <1>, wherein the side sheet is disposed on the both sides of the absorbent body in the longitudinal direction, and the side sheet is disposed, respectively. And the side sheet is disposed and fixed over the skin facing surface side of the front sheet and along the entire side of the longitudinal direction, and the inner end portion of the side sheet in the width direction is a free end, and In the vicinity of the free end of the crotch portion, an elastic member for forming a three-dimensional gather is fixed in an elongated state in the longitudinal direction, and a contraction force of the elastic member for forming the three-dimensional gather is a specific width from the free end when worn. The portion is separated from the front sheet to form a three-dimensional pleat.

The disposable diaper according to any one of the above-mentioned <1> to <25> wherein the both sides of the absorbent body in the longitudinal direction extend to the side of the outer side in the width direction, respectively. The sheet is joined to the back sheet to form a flap portion, and the elastic member for forming the leg gather is fixed and fixed in the longitudinal direction in the flap portion in the lower portion of the crotch, and the leg is worn by the leg when worn. The contraction force of the elastic member for forming the pleats forms leg pleats.

The disposable diaper according to any one of the above aspects, wherein the above-mentioned side panel is attached to the outer side of the side panel with the above-mentioned fastening tape extending outward in the width direction.

<28> The disposable diaper according to the above <27>, wherein the fastening tape is folded before use, and is used after being unfolded in use, and has a substantially trapezoidal shape of the upper base on the outer side in the width direction in the unfolded state. The hook material is fixed to the outer side in the width direction of the tape substrate sheet formed in the same shape as the plan view of the fastening tape.

<29> The disposable diaper according to the above <27>, wherein the bonding region where the above-mentioned fastening tape is joined to the side panel is formed in a disposable diaper by an adhesive, and is interposed by heat. A plurality of fusion portions formed by sealing or ultrasonic sealing are joined.

<30> The disposable diaper according to the above <29>, wherein the joining region includes a fusing portion in which a plurality of small-shaped fusion portions are regularly arranged in the longitudinal direction, and the fusing portion is arranged in the width direction. And the joint area is 10% or more and 50% or less, preferably 10% or more and 40% or less, with respect to the total area of the stretchable side sheets in a plan view of the stretchable side sheets in a natural state. .

<31> The disposable diaper according to the above <29>, wherein the shape of the fusion portion is any one of an elliptical shape, a circular shape, a rhombic shape, a triangular shape, and a polygonal shape.

<32>

The disposable diaper according to any one of the above-mentioned items, wherein the sealing portion has a sealing pattern area of 2 mm ² or more and 30 mm ² or less, preferably 2 mm ² or more and 20 mm ² or less.

<33>

The disposable diaper according to any one of the above-mentioned items, wherein the distance between the fusion portions adjacent in the longitudinal direction is 1 mm or more and 8 mm or less, preferably 6 mm or less.

<34>

The disposable diaper according to any one of the above-mentioned items, wherein the number of the fused portions is one/cm ² or more and 16 pieces/cm ² or less, preferably 2 pieces/cm ² or more. 10 / cm ² or less, a plurality of fused portions of the total pattern area of the seal with respect to the ratio of the area of the bonding area of 10% or more, 70% or less, more preferably 10%, 50% or less.

<35>

The disposable diaper according to any one of the above aspects, wherein the elastic member in the stretchable side panel is oriented in an extending direction of an edge of the longitudinal direction of the side panel When the intersecting angles θ2 intersect, they are arranged at substantially equal intervals in the longitudinal direction in a state in which they are obliquely elongated in the width direction, and the intersecting angle θ2 is 150° or more, preferably 160° or more, and the upper limit is less than 180. °, preferably 175 ° or less.

<36>

The disposable diaper according to any one of the above-mentioned <1> to <35> wherein, in the elastic member constituting the stretchable side panel, an elongation direction of one of the plurality of elastic members and a plurality of elastic members are The extending direction of the remaining elastic members intersects, and the extending direction of the first elastic member of the partial elastic member intersects with the extending direction of the second elastic member of the remaining elastic member at an intersection angle θ3 and is inclined in the width direction. The direction of intersection θ3 is 5° or more, preferably 10° or more, and the upper limit is 30° or less, preferably 20° or less.

The disposable diaper of any one of the above-mentioned <1> to <36>, wherein the outer surface of the ventral side of the disposable diaper is provided with a hook material for fastening the above-mentioned fastening tape Buckle.

The disposable diaper according to any one of the above aspects, wherein the side panel is fixed to the back sheet in such a manner that the side edge of the absorbent body extends outward in the width direction. Non-skin opposite.

The disposable diaper according to any one of the above aspects, wherein the side panel is disposed between the side sheet disposed in the back side portion and the back sheet, or is fixed On the opposite side of the skin of the side sheet.

The disposable diaper according to any one of the above aspects, wherein the fastening tape is attached to an end portion on the side of the back side portion in the longitudinal direction of the stretchable side panel.

[Industrial availability]

According to the present invention, there is provided a disposable diaper which is improved in ease of use even when the side panel of the flat shape is stretchable, and which is not easy to leave an offset at the leg circumference during wearing of the diaper.

1A‧‧‧ diapers

2‧‧‧Absorbable ontology

2S‧‧‧ side

2S1‧‧‧ side edge

3‧‧‧ side film

3d‧‧‧ edge

3i‧‧‧lateral edge

3o‧‧‧lateral edge

3S‧‧‧Outside

3u‧‧‧ edge

4‧‧‧Buckle tape

6‧‧‧ joint area

24‧‧‧Side sheet

31‧‧‧ Skin side sheet

31S‧‧‧Extension

32‧‧‧Non-skin side sheet

33‧‧‧Flexible components

33c‧‧‧Flexible components

33I‧‧‧End

33O‧‧‧ end

35‧‧‧ Body side adhesive layer

36‧‧‧Outer adhesive layer

37‧‧‧Intermediate adhesive layer

38‧‧‧ Non-continuous area

41‧‧‧With substrate sheet

42‧‧‧ hook material

61‧‧‧Fuse Department

61G‧‧‧ fusion group

Θ1‧‧‧cross angle

X‧‧‧Width direction

Y‧‧‧ Length direction

Claims (40)

A disposable diaper comprising a vertically long absorbent body comprising a liquid-retaining absorbent body, a front sheet disposed on a skin facing side of the absorbent body, and a front side sheet disposed on the absorbent body The back sheet of the non-skin facing side is divided into a ventral side portion on the ventral side of the wearer when worn, a back side portion on the back side, and a side portion disposed between the ventral side portion and the back side portion Further, a side panel extending outward in the width direction is attached to both sides of the absorbent body in the longitudinal direction, and a side width is attached to the side portion of the side panel in the longitudinal direction of the absorbent body. a fastening strip extending outwardly, wherein the side panels are in an extended state, and both end edges of the absorbent body in the longitudinal direction extend parallel to each other, and include: two side panel sheets; and a plurality of elastic members fixed to the side 2 sheets of side sheets extending in the width direction; a body side adhesive layer disposed on the end side of the plurality of elastic members on the side of the absorbent body and extending along the longitudinal direction of the absorbent body; a layer disposed on an end side of the outer side of the side panel of the elastic member and extending along a longitudinal direction of the absorbent body; and a plurality of intermediate adhesive layers disposed on the body side adhesive layer and the body Between the outer adhesive layers and extending along the longitudinal direction of the absorbent body; and the side sheets are intermittently disposed in the absorbent layer by interposing the main body side adhesive layer, the outer adhesive layer and the intermediate adhesive layer The elastic member is formed by being fixed between the two side sheet sheets in an extended state in the longitudinal direction of the main body, and the intermediate adhesive layer is weaker than the main body side adhesive layer and the outer side adhesive layer. Then, at least one of the end portions of the elastic members that are disposed at least closest to the crotch portion of the plurality of elastic members is located between the body side adhesive layer and the outer adhesive layer, and The other end is located on the body side a layer of the agent or the outer layer of the outer layer, wherein the side sheets are extended in parallel with each other along the longitudinal edges of the absorbent body, and the direction of the side edges of the side sheets and the absorption of the side sheets The extending direction of the end edges in the longitudinal direction of the body does not intersect at right angles to form a parallelogram. The disposable diaper according to claim 1, wherein the stretchable side panel is in an extended state, and the both sides of the elastic member disposed closest to the lower crotch side are disposed on both side edges along the longitudinal direction of the absorbent body. One of the ends is located between the body side adhesive layer and the outer adhesive layer. The disposable diaper according to claim 1 or 2, wherein at least one of the plurality of elastic members disposed on the lowermost side of the crotch is in a direction in which the direction of elongation of the elastic member is opposite to the longitudinal direction of the longitudinal direction of the absorbent body of the side panel cross. The disposable diaper according to claim 1 or 2, wherein at least one of the end portions of the plurality of elastic members disposed at the lowermost side of the crotch is one of the end portions of the elastic member is worn in the disposable diaper Before the state of the person is completed, it is located between the body side adhesive layer and the outer side adhesive layer. A disposable diaper according to claim 1 or 2, wherein said intermediate adhesive layer has a width which is narrower than a width of each of said main body side adhesive layer and said outer side adhesive layer. The disposable diaper according to claim 1 or 2, wherein one of the plurality of elastic members is an end portion on the outer side of the side panel and overlaps with the outer adhesive layer, or is compared with the outer adhesive layer The outer side in the width direction is fixed to the side panel sheet constituting the side panel by sealing. The disposable diaper according to claim 1 or 2, wherein at least the elastic member disposed on the lowermost side of the crotch elastic member has an extending direction intersecting the width direction of the absorbent body. A disposable diaper according to claim 1 or 2, wherein one of said plurality of elastic members The direction of elongation of the partial elastic members intersects with the direction of elongation of the remaining elastic members of the plurality of elastic members. A disposable diaper according to claim 1 or 2, wherein the side edges of the side panels extend in a direction intersecting the longitudinal direction of the absorbent body of the absorbent body. The disposable diaper according to claim 1 or 2, wherein the other end portion of the elastic member disposed closest to the lower side of the crotch is located on the outer adhesive layer. A disposable diaper according to claim 1 or 2, wherein said side panels are attached to the back side of said absorbent body. The disposable diaper according to claim 1 or 2, wherein the two side sheet materials constituting the stretchable side panel comprise a skin side sheet on the opposite side of the skin and a non-skin side on the non-skin facing side The sheet material and the skin side sheet and the non-skin side sheet are formed in a rectangular shape. The disposable diaper according to claim 1 or 2, wherein the two side sheet sheets, that is, the skin side sheet and the non-skin side sheet are in a planar state, and are longer than the length of the elastic member in the stretched state. The disposable diaper according to claim 1 or 2, wherein the two side sheet sheets, that is, the skin side sheet and the non-skin side sheet are formed into the same shape and the same size, or the skin side sheet and the non-skin side sheet The material has a different length from the side edges of the absorbent body. The disposable diaper according to claim 1 or 2, wherein an angle of intersection of the extending direction of the elastic member in the stretchable side panel and the extending direction of the end edge of the side panel in the longitudinal direction is greater than 0° and is 30° the following. The disposable diaper according to claim 1 or 2, wherein the elastic member adjacent to each other in the longitudinal direction of the stretchable side panel is spaced apart from each other by 3 mm or more and 15 mm or less. A disposable diaper according to claim 1 or 2, wherein the disposable diaper is disposed on the side panel of the above-mentioned stretchability The elastic member has a linear shape and has a cross section of any shape such as a substantially circular shape, a square shape, or a polygonal shape. The disposable diaper according to claim 17, wherein the linear elastic member in the stretchable side panel has a diameter or a width of 0.1 mm or more and 2 mm or less. The disposable diaper according to claim 17, wherein the number of the linear elastic members disposed on the stretchable side panel is two or more and 25 or less. The disposable diaper according to claim 17, wherein the linear elastic member disposed on the stretchable side panel has a stress of 0.1 N or more when the elongation is 100% (the natural state is 0%). One of the linear elastic members of 1 N or less is disposed and fixed in a state in which the elongation is 50% or more and 300% or less. The disposable diaper according to claim 1 or 2, wherein the width of the intermediate adhesive layer is narrowed by 30% or more with respect to the width of each of the main body side adhesive layer and the outer side adhesive layer. The disposable diaper according to claim 1 or 2, wherein the main body side adhesive layer, the outer side adhesive layer and the intermediate adhesive layer are extended in the longitudinal direction across the elastic member, and extend over the stretchable side sheet The length of the length direction. The disposable diaper according to claim 1 or 2, wherein in the stretchable side panel, the elastic member is fixed to the main body side adhesive layer, the outer side adhesive layer and the intermediate adhesive layer in an extended state, and In a natural state in which the elastic member is contracted, a plurality of creases are formed on both sides of the side panel, and the creases are formed to extend in a longitudinal direction so as to intersect the plurality of the elastic members, and the crease is attached to the body side adhesive Between the layer and the outer adhesive layer, due to the contraction of the elastic member, the two side panel sheets protrude convexly in a direction separating from the elastic member in each non-adjacent region, and on the other hand, in the middle In the subsequent layer, the elastic member is formed in a concave shape and has a concavo-convex shape. A disposable diaper according to claim 1 or 2, wherein the length of the absorbent body is along A side sheet is disposed on each of the two sides of the direction, and the side sheet is disposed over the skin facing surface side of the front sheet and along the entire side in the longitudinal direction. The inner end portion of the side sheet in the width direction is a free end, and an elastic member for forming a three-dimensional pleat is disposed in an extended state in the longitudinal direction in the vicinity of the free end of the crotch portion. Due to the contraction force of the elastic member for forming the three-dimensional pleats, a portion having a specific width from the free end is separated from the front sheet to form a three-dimensional pleat. The disposable diaper according to claim 1 or 2, wherein a side sheet extending to the outer side in the width direction is joined to the back sheet at both side portions in the longitudinal direction of the absorbent body to form a flap portion, In the above-mentioned flap portion in the lower part of the crotch, the elastic member for forming the leg gathers is fixed and fixed in the longitudinal direction in an extended state, and when worn, the leg gathers are formed by the contraction force of the elastic member for forming the leg gathers. . A disposable diaper according to claim 1 or 2, wherein said fastening tape extending outward in the width direction is attached to an outer side portion of said side panel. The disposable diaper according to claim 26, wherein the fastening tape is folded before use and is used after being unfolded in use, and has a substantially trapezoidal shape of the upper bottom on the outer side in the width direction in the unfolded state, and The fastening tape is formed by fixing the hook material on the outer side in the width direction of the base material sheet which is formed in the same shape in plan view. The disposable diaper of claim 26, wherein the bonding region where the fastening tape is joined to the side panel is formed in a disposable diaper by an adhesive, and is formed by heat sealing or ultrasonic sealing. A plurality of fusion portions are joined. The disposable diaper according to claim 28, wherein the joint region includes a flock portion in which a plurality of small-shaped fusion portions are regularly arranged in a longitudinal direction, and the fusing portion group is arranged in plural in the width direction, and The joint area is the total area of the stretchable side panels when viewed from the above-mentioned stretchable side panels in a natural state. It is 10% or more and 50% or less. The disposable diaper of claim 28, wherein the shape of the fused portion is any one of an elliptical shape, a circular shape, a diamond shape, a triangular shape, and a polygonal shape. The disposable diaper according to claim 28, wherein the sealing pattern area of the fusion portion is 2 mm ² or more and 30 mm ² or less. The disposable diaper according to claim 28, wherein the distance between the fusion portions adjacent in the longitudinal direction is 1 mm or more and 8 mm or less. The disposable diaper of claim 28, wherein the number of the fused portions is one/cm ² or more and 16 pieces/cm ² or less, and the total sealing pattern area of the plurality of fused portions is relative to the joint area The ratio of the area is 10% or more and 70% or less. The disposable diaper according to claim 1 or 2, wherein the elastic member in the stretchable side panel is in such a manner that an extending direction of the end edge of the side panel in the extending direction intersects at an intersection angle θ2, In a state in which the width direction is elongated and inclined, they are arranged at substantially equal intervals in the longitudinal direction, and the intersection angle θ2 is 150° or more, and the upper limit is less than 180°. The disposable diaper according to claim 1 or 2, wherein, in the elastic member constituting the stretchable side panel, an elongation direction of one of the plurality of elastic members and an elongation direction of the remaining elastic members of the plurality of elastic members The intersecting direction of the first elastic member of the elastic member intersects with the extending direction of the second elastic member of the remaining elastic member at an intersection angle θ3, and is inclined in the width direction and alternately arranged in the longitudinal direction. The angle θ3 is 5° or more, and the upper limit is 30° or less. The disposable diaper according to claim 1 or 2, wherein the outer surface of the abdominal side portion of the disposable diaper is provided with a cleat for fastening the hook material of the fastening tape. The disposable diaper according to claim 1 or 2, wherein the side panel is fixed to the back sheet in such a manner as to extend outward from the side edge of the absorbent body in the width direction It is not the opposite side of the skin. The disposable diaper according to claim 1 or 2, wherein the side panel is disposed between the side sheet disposed in the back side portion and the back sheet, or is fixed to the skin facing side of the side sheet. . The disposable diaper according to claim 1 or 2, wherein the fastening tape is attached to an end portion on the side of the back side portion in the longitudinal direction of the stretchable side panel. The disposable diaper according to claim 1, wherein all of the plurality of elastic members constituting the side panel have an extending direction parallel to an extending direction of an end edge of the longitudinal direction (Y direction) of the side panel, and are disposed closest to the crucible. An end portion of the both ends of the elastic member on the lower side near the center line is located between the body side adhesive layer and the outer adhesive layer, and an end portion in the width direction (X direction) is located on the outer adhesive layer. .