JP6157110B2 - Disposable diapers - Google Patents

Description

  The present invention relates to a deployable disposable diaper.

  Conventionally, disposable diapers having stretchable side panels extending from both side edges of the absorbent main body are known. In the human body, the stomach protrudes forward and the back is recessed, and further below it, the buttock protrudes rearward and the base of the leg further increases the perimeter. When such a human body simply wears a disposable diaper having a stretchable side panel, the stretch of the stretchable side panel becomes uneven depending on the unevenness of the body shape and the changing perimeter. End up. When the stretchable side panel extends unevenly in this way, the circumference of the leg may be widened, and a rubber mark by the stretchable side panel may be attached around the leg where the unevenness of the human body shape is changed.

  As a disposable diaper which has a side panel, the disposable diaper which has a stretchable side panel of patent documents 1 and patent documents 2, for example is known. In addition, as a disposable diaper having a stretchable side panel, the present applicant has previously proposed the disposable diapers described in Patent Document 3 and Patent Document 4.

Special table 2008-526386 WO2008 / 002840 Publication JP 2012-1000083 A JP2012-120609A

  The stretchable side panel of the disposable diaper described in Patent Document 1 and Patent Document 2 is formed in a complicated shape when viewed from above, with both longitudinal edges of the side panel not extending parallel to each other. Has been. For this reason, it is impossible to manufacture a side panel having such a shape in a trimless manner.

  The stretchable side panel of the disposable diaper described in Patent Document 3 and Patent Document 4 is formed in a rectangular shape in plan view, and can be manufactured in a trimless manner when the side panel is manufactured.

  However, in Patent Document 3 and Patent Document 4, at least the elastic member disposed on the crotch part side among the plurality of elastic members constituting the side panel and the elastic member constituting the side panel are fixed. There is no description about the relationship of the arrangement with the adhesive layer. Therefore, the disposable diapers described in Patent Document 3 and Patent Document 4 are improved from the viewpoint of improving the feeling of use while reducing the rubber marks around the legs by the stretchable side panel while wearing the diaper. There was room.

  Accordingly, the present invention is to provide a disposable diaper having an improved feeling of use, in which a rubber mark is hardly attached around a leg during wearing of the diaper, even though the planar shape is a simple stretchable side panel. .

  The present invention has a liquid-retaining absorbent body, a top sheet disposed on the skin facing surface side of the absorbent body, and a back sheet disposed on the non-skin facing surface side of the absorbent body. A vertically long absorbent main body divided into a ventral part located on the ventral side, a dorsal part located on the dorsal side, and a crotch portion arranged between the ventral part and the dorsal part, Stretchable side panels that extend outward in the width direction are attached to both sides in the longitudinal direction of the absorbent main body, and outward in the width direction on the outer side along the longitudinal direction of the absorbent main body of the side panel. A disposable diaper to which an extending fastening tape is attached, wherein the side panels extend in parallel with each other in the longitudinal direction in the longitudinal direction of the absorbent main body, and two sheets, between the two sheets A plurality of elastic members fixed in the width direction and extending in the width direction, the plurality of elastic members A main body side adhesive layer extending in the longitudinal direction of the absorbent main body disposed on the end side of the absorbent main body side of the material, an absorption disposed on the end side on the outer side of the side panel of the elastic member An outer side adhesive layer extending in the longitudinal direction of the absorbent main body, and a plurality of intermediate adhesive layers extending in the longitudinal direction of the absorbent main body disposed between the main body side adhesive layer and the outer side adhesive layer The elastic member stretched intermittently disposed in the longitudinal direction of the absorbent main body is interposed between the two sheets with the main body side adhesive layer, the outer side adhesive layer and the intermediate adhesive layer interposed therebetween. The intermediate adhesive layer has an adhesive strength that is weaker than the adhesive strength of each of the main body side adhesive layer and the outer side adhesive layer, and the intermediate adhesive layer has a plurality of elastic members. The elastic member disposed at least on the crotch lower side of the inner end of the elastic member is such that one end of the elastic member has the book. Provided is a disposable diaper located between a side adhesive layer and the outer side adhesive layer and having the other end located on the main body side adhesive layer or the outer side adhesive layer. Is.

  ADVANTAGE OF THE INVENTION According to this invention, although it is an elastic side panel with a simple planar shape, the disposable diaper which the rubber | gum mark is hard to stick around a leg and the feeling of use improved during wearing of a diaper is provided.

Drawing 1 is a top view which looked at the state where the deployment type disposable diaper which is a 1st embodiment of the present invention was extended and expanded from the surface sheet side. FIG. 2 is an enlarged plan view of a state where the stretchable side panel of the unfolded disposable diaper of FIG. 1 is expanded and expanded. 3 is a cross-sectional view of the cross section taken along the line II of FIG. FIG. 4 is an enlarged plan view of the stretchable side panel of the disposable diaper according to the embodiment of the present invention in an expanded state (corresponding to FIG. 2). FIG. 5 is a view showing a state when the disposable diaper of FIG. 1 is worn. Drawing 6 is a perspective view showing an example of the manufacturing method of the side panel in the disposable diaper of a 1st embodiment. FIG. 7 is an enlarged plan view of the stretchable side panel of the disposable diaper according to the second embodiment of the present invention in an expanded state (corresponding to FIG. 2). FIG. 8: is an enlarged plan view figure of the state which expand | extended and expanded the elastic | stretch side panel which the disposable diaper of 3rd Embodiment of this invention has (FIG. 2 equivalent view). FIG. 9 is an enlarged plan view of the stretchable side panel of the disposable diaper according to the fourth embodiment of the present invention in an expanded state (corresponding to FIG. 2). FIG. 10: is an enlarged plan view figure of the state which expand | extended and expanded the elastic | stretch side panel which the disposable diaper of 5th Embodiment of this invention has (FIG. 2 equivalent view). FIG. 11: is an enlarged plan view figure of the state which expand | extended and expanded the elastic | stretch side panel which the disposable diaper of 6th Embodiment of this invention has (FIG. 2 equivalent view). FIG. 12: is an enlarged plan view figure of the state which expand | extended and expanded the elastic | stretch side panel which the disposable diaper of 7th Embodiment of this invention has (FIG. 2 equivalent view). FIG. 13: is an enlarged plan view figure of the state which expand | extended and expanded the elastic | stretch side panel which the disposable diaper of 8th Embodiment of this invention has (FIG. 2 equivalent view). FIG. 14: is an enlarged plan view figure of the state which expanded and expanded the elastic | stretch side panel which the disposable diaper of 9th Embodiment of this invention has (FIG. 2 equivalent view).

Hereinafter, the disposable diaper of this invention is demonstrated, referring FIGS. 1-5 based on the preferable 1st Embodiment.
A disposable diaper 1A of the first embodiment (hereinafter, also referred to as “diaper 1A”) is a liquid-retaining absorbent body 23, and a topsheet disposed on the skin facing surface side of the absorbent body 23, as shown in FIG. 21 and a backside sheet 22 arranged on the non-skin-facing surface side of the absorbent body 23, abdominal side A located on the abdomen side of the wearer when worn, a dorsal side B located on the dorsal side and a ventral side part A longitudinally long absorbent main body 2 that is long in the longitudinal direction of the absorbent main body (Y direction) divided into a crotch part C disposed between A and the back side B is provided. In the disposable diaper of the present invention, stretchable side panels extending outward in the width direction (X direction) are attached to both side portions in the longitudinal direction (Y direction) of the absorbent main body. As shown in FIG. 1, stretchable side panels 3 are attached to both side portions 2 </ b> S of the back side portion B of the absorbent main body 2. Moreover, the fastening tape 4 extended in the width direction (X direction) outward is attached to the diaper 1A to the outer side part 3S along the absorptive main body longitudinal direction (Y direction) of the side panel 3.
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 and right symmetrical parts will be mainly described.

  Moreover, in this specification, a "skin opposing surface" is a surface distribute | arranged to a wearer's skin side at the time of wear among the front and back both surfaces of each member which comprises 1 A of diapers, and the "P" side in FIG. It is the same surface as. In addition, the “non-skin facing surface” is a surface of the front and back surfaces of each member constituting the diaper 1 </ b> A that is directed to the side opposite to the wearer's skin side when worn, It is the same surface as the surface. And "absorbent main body longitudinal direction" means the longitudinal direction in which the vertically long absorbent main body is directed from the back side portion to the ventral side portion, and the "Y" direction shown in each figure is the absorbent main body of the diaper 1A. 2 is a longitudinal direction (absorbent body longitudinal direction) and a direction parallel to the center line CL, and the “X” direction shown in each figure is the width direction (absorbent body width) of the absorbent body 2 of the diaper 1A. Direction), which is a direction perpendicular to the center line CL. Hereinafter, the diaper 1A will be specifically described.

  As shown in FIG. 1, the absorbent main body 2 has a rectangular shape that is long in the Y direction, and has a liquid-permeable surface sheet 21 and liquid-impermeable or liquid-impermeable (including water repellency). A back sheet 22 and a liquid retaining absorbent 23 interposed between the two sheets 21 and 22 are provided. As shown in FIG. 1, each of the top sheet 21 and the back sheet 22 covers the entire skin facing surface and the non-skin facing surface of the absorber 23, extends from the periphery of the absorber 23, In the protruding part, it is fixed by adhesive such as hot melt or by fusion such as heat sealing. The top sheet 21 is the same as the length of the back sheet 22 in the Y direction, but is shorter than the back sheet 22 in the X direction. The back sheet 22 is formed in the same shape as the absorbent main body 2 in plan view.

  Further, side sheets 24 are arranged on both side portions 2 </ b> S along the Y direction of the absorbent main body 2 via the surface sheet 21. The side sheet 24 is disposed on and fixed to the skin facing surface side of the top sheet 21 over the entire side portion 2S along the Y direction. The inner end (near the center line CL) in the X direction of the side seat 24 is a free end, and an elastic member 25 for forming a three-dimensional gather is extended in the Y direction near the free end of the crotch C. It is disposed and fixed, and when worn, due to the contraction force of the elastic member 25, a portion having a predetermined width from the free end is separated from the topsheet 21 to form a three-dimensional gather.

  Further, a side sheet 24 and a back sheet 22 extending outward in the X direction are joined to both side parts 2S along the Y direction of the absorbent main body 2 to form a flap part. In the diaper 1A, as shown in FIG. 1, an elastic member 26 for forming leg gathers is disposed and fixed in the Y-direction in an expanded state in the flap portion of the crotch portion C, and the elastic member 26 contracts when worn. Leg gathers are formed by the force.

  As described above, stretchable side panels 3 extending outward in the width direction (X direction) are attached to both side portions 2S of the back side portion B of the absorbent main body 2 as shown in FIG. A fastening tape 4 extending outward in the width direction (X direction) is attached to the outer side portion 3S of the side panel 3. In the diaper 1 </ b> A, as shown in FIG. 3, the non-skin facing surface of the back sheet 22 disposed on the side portion 2 </ b> S is absorbed by the elastic side panel 3 having elasticity in the X direction by various known methods. The main body 2 is fixed so as to extend outward from the side edge 2S1 in the X direction. In the diaper 1A, the side panel 3 is fixed to the non-skin facing surface of the back sheet 22, but is disposed and fixed between the side sheet 24 and the back sheet 22 disposed on the side 2S. Moreover, it may be fixed to the skin facing surface of the side sheet 24.

As shown in FIGS. 2 and 3, the stretchable side panel 3 has both end edges 3 u and 3 d in the Y direction extending in parallel with each other in the extended state, and includes two sheets 31 and 32 and two sheets 31. , 32, a plurality of elastic members 33 extending in the X direction, and a body extending in the Y direction disposed on the end 33I side of the plurality of elastic members 33 on the absorbent main body 2 side (near the center line CL). The side adhesive layer 35, the outer side adhesive layer 36 extending in the Y direction, disposed on the side 33 of the elastic member 33 on the side panel 3 outer side 3S side, extending in the Y direction, the main body side adhesive layer 35 and the outer side A plurality of intermediate adhesive layers 37 extending in the Y direction and disposed between the adhesive layers 36 are provided.
If the outer side adhesive layer 36 and the main body side adhesive layer 35 are not provided as in the present invention, for example, the elastic rubber end is also fixed with an intermediate adhesive layer, or the panel material adhesive. Is applied to the entire surface with a spiral pattern, etc., the elastic rubber of the elastic panel pulled during installation is likely to come off from the elastic rubber of the middle part instead of the lowermost end, and the leg rubber at the lowermost end. There will be a problem that the pressure on the device will remain as it is.

  Hereinafter, the side panel 3 will be described in detail. As shown in FIG. 2, the stretchable side panel 3 in the diaper 1 </ b> A is formed in a rectangular shape in a state of being expanded in a planar shape. Therefore, the side panel 3 of the diaper 1A has not only both end edges 3u and 3d in the Y direction extending in parallel with each other but also both side edges 3i and 3o in the Y direction in parallel with each other in a state of being expanded in a plane. The extending direction of the end edges 3u, 3d and the extending direction of the side edges 3i, 3o intersect at right angles.

  In the diaper 1 </ b> A, as shown in FIG. 1, the extending direction of the side edges 3 i and 3 o along the Y direction of the side panel 3 and the absorbent main body longitudinal direction (Y direction) of the absorbent main body 2 are parallel. As described above, stretchable side panels 3 are attached to both side portions 2S of the back side portion B of the absorbent main body 2.

  Moreover, as shown in FIG. 2, the skin side sheet | seat 31 located in the skin opposing surface side which comprises the stretchable side panel 3, and the non-skin side sheet | seat 32 located in the non-skin opposing surface side were also expanded planarly. In the state, the shape of the stretchable side panel 3 is the same as that of the plan view. That is, the skin side sheet 31 and the non-skin side sheet 32 are formed in a rectangular shape of the same shape and size in the diaper 1A. The skin-side sheet 31 and the non-skin-side sheet 32 are wider than the length of the elastic member 33 in the expanded state in a state where the skin-side sheet 31 and the non-skin-side sheet 32 are expanded in a planar shape. In addition, although the skin side sheet | seat 31 and the non-skin side sheet | seat 32 which comprise the stretchable side panel 3 are formed in the same shape and the same magnitude | size in the diaper 1A, the skin side sheet | seat 31 and the non-skin side are formed. The sheet 32 may have a size such that the extension length from the side edge 2S1 of the absorbent main body 2 is different. As described above, when the stretchable side panel 3 is formed using the skin side sheet 31 and the non-skin side sheet 32 having different lengths extending from the side edge 2S1 in the X direction, The X direction outer side of the outer side portion 3 </ b> S is formed by one sheet of the skin side sheet 31 or the non-skin side sheet 32. 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 arranged between the skin side sheet 31 and the non-skin side sheet 32, and as shown in FIG. 2, the extending direction is the Y direction of the side panel 3. In such a state that it is inclined and extended in the X direction so as to intersect with the extending direction of the end edges 3u and 3d, they are arranged at substantially equal intervals in the Y direction. As shown in FIG. 2, the intersection angle θ1 between the extending direction of the elastic member 33 and the extending direction of the edges 3u, 3d in the Y direction of the side panel 3 is from the viewpoint of stretchability, fit, aesthetics, etc. There is no particular limitation on the lower limit value, preferably greater than 0 °, more preferably 5 ° or more, preferably 30 ° or less, more preferably 20 ° or less, specifically The angle is preferably greater than 0 ° and not more than 30 °, more preferably not less than 5 ° and not more than 20 °. The distance between the elastic members 33 adjacent to each other in the Y direction is preferably 3 mm or more and 15 mm or less from the viewpoints of stretchability, fit, and flexibility. As described above, in the diaper 1A, the extending direction of the side edges 3i, 3o along the Y direction of the rectangular side panel 3 and the longitudinal direction (Y direction) of the absorbent main body 2 are defined. Since they are parallel, the extension direction of the elastic member 33 also intersects the width direction (X direction) of the absorbent main body 2 at the intersection angle θ1. In the right side panel 3 and the left side panel 3, the inclination direction of the elastic member 33 is symmetrical with respect to the center line CL.

  The thread-like elastic member 33 disposed on the stretchable side panel 3 includes a polygonal shape in addition to a substantially circular or square cross section. The thread-like elastic member 33 preferably has a width (dimension in the Y direction) and a diameter of 0.1 mm or more and 2 mm or less from the viewpoint of improving the flexibility of the stretchable side panel 3 and ensuring stretchability. More preferably, it is 0.1 mm or more and 1 mm or less. Further, the number of the thread-like elastic members 33 disposed on the stretchable side panel 3 is preferably about 2 to 25, more preferably 3 to 20. Further, the elongation rate can be appropriately selected from conventionally known one elastic member 33 in the form of a thread having a stress of 0.1 N or more and 1 N or less when the elongation rate is 100% (natural state is 0%). It is preferably arranged and fixed in a stretched state in a range of 50% to 300%, and more preferably arranged and fixed in a stretched state in a range of 100% to 250%. The elongation rate is the ratio of the length of the stretched portion to the natural length. For example, when a 10 cm length is stretched to 20 cm, the stretch rate is 100%.

As shown in FIG. 2, the adhesive layer that fixes the thread-like elastic member 33 between the skin-side sheet 31 and the non-skin-side sheet 32 includes a main body-side adhesive layer 35, an outer-side adhesive layer 36, and an intermediate adhesive. An agent layer 37 is provided. In the diaper 1 </ b> A, a plurality of intermediate adhesive layers 37 are provided in a region between the main body side adhesive layer 35 and the outer side adhesive layer 36. The intermediate adhesive layer 37 is formed such that the adhesive strength is weaker than the adhesive strength of each of the main body side adhesive layer 35 and the outer side adhesive layer 36. As a method for 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 side adhesive layer 36, for example, an adhesive coating method may be used. The adhesive layer 37 is changed to be narrow and the main body side adhesive layer 35 and the outer side adhesive layer 36 are changed to be wide, or the adhesive coating amount is changed to the coating amount of the intermediate adhesive layer 37. There are few, and it can change and change so that the coating amount of the main body side adhesive bond layer 35 and the outer side adhesive bond layer 36 may increase. 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 The adhesive strength of the main body side adhesive layer 35 and the adhesive strength of the outer side adhesive layer 36 are weaker. 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 preferably 50% or more. Further preferred. The main body side adhesive layer 35, the outer side adhesive layer 36 and the intermediate adhesive layer 37 intersect with most elastic members 33 and extend in the Y direction, and the full length of the stretchable side panel 3 in the Y direction. It is over.
Although the measurement method of adhesive strength is described below, in 1st Embodiment, it should just have the relationship of the above-mentioned adhesive strength, and it does not matter in particular also with another measuring method.

(Adhesive strength measurement method)
Using the stretchable side panel 3 having the respective adhesive layers as a measurement sample, the end portions along the longitudinal direction of the two sheets 31 and 32 on which the side panel 3 overlaps are chucked one by one, and a tensile test is performed. Using a machine (Orientec Co., Ltd. RTC-1150), the tensile speed is pulled at 300 mm / min, and the strength at the time of peeling the joint is measured. The main body side adhesive layer 35 is measured by chucking the main body side end portion of the stretchable side panel 3, and the outer side adhesive layer 36 is chucked by the outer end portion of the stretchable side panel 3. To measure. For the intermediate adhesive layer 37, the main body side adhesive layer 35 part or the outer adhesive layer 36 part of the stretchable side panel 3 is cut off, and the sheet 31 of the side panel 3 of the part where the side panels 3 are not joined together, Chuck 32 and measure.
The specific adhesive strength is not limited as long as the adhesive strength of the present invention is related. For example, 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 adhesive layer. The adhesive strength in 36 and the main body side adhesive layer 35 is preferably 130% or more of the intermediate adhesive layer 37, and more preferably 150% or more.

  As shown in FIGS. 2 and 3, the side panel 3 includes an extended elastic member 33 intermittently arranged in the Y direction between the two sheets 31 and 32, the body-side adhesive layer 35, and the outer side. The side adhesive layer 36 and the intermediate adhesive layer 37 are fixed and formed. Specifically, a plurality of elastic members 33 that are inclined and extended in the X direction are moved in the Y direction via the main body side adhesive layer 35, the outer side adhesive layer 36, and the intermediate adhesive layer 37. The skin side sheet 31 and the non-skin side sheet 32 are fixed with a substantially equal interval. The stretchable side panel 3 has a main body side adhesive layer 35, an outer side adhesive layer 36, and an intermediate adhesive layer applied to one or both of the skin side sheet 31 and the non-skin side sheet 32 by various known methods. The adhesive which becomes 37 is applied, and after the application, the stretched thread-like elastic member 33 is fixed by overlapping and pressing the sheets 31 and 32. The stretchable side panel 3 may be applied in combination with fixing by heat sealing or the like in addition to fixing by the adhesive layers 35, 36, and 37.

  As shown in FIG. 3, the stretchable side panel 3 includes a body-side adhesive layer 35, an outer-side adhesive, and the skin-side sheet 31 and the non-skin-side sheet 32, in a region where the elastic member 33 is not interposed. Direct bonding is performed via the agent layer 36 and the intermediate adhesive layer 37. Therefore, between the main body side adhesive layer 35 and the adjacent intermediate adhesive layer 37, between the adjacent intermediate adhesive layers 37, and between the outer side adhesive layer 36 and the adjacent intermediate adhesive layer 37. A non-adhesion region 38 where the skin-side sheet 31 and the non-skin-side sheet 32 are not bonded to each other is formed therebetween. Similarly to the adhesive layers 35, 36, and 37, the non-adhesion region 38 also intersects the plurality of elastic members 33 and extends in the Y direction over the entire length of the side panel 3 in the Y direction, as shown in FIG. ing.

  In the side panel 3 of the diaper 1A, the elastic member 33 is fixed in a stretched state by the main body side adhesive layer 35, the outer side adhesive layer 36, and the intermediate adhesive layer 37, and the elastic member 33 contracts. In the natural state, a plurality of wrinkles are formed on both sides of the side panel 3 as shown in FIG. Each ridge is formed to extend in the Y direction so as to intersect the plurality of elastic members 33. As shown in FIG. 3, the ridge formed on the side panel 3 has two sheets 31, 32 due to contraction of the elastic member 33 between the main body side adhesive layer 35 and the outer side adhesive layer 36. However, each of the non-bonded regions 38 bulges in a convex shape in a direction away from the elastic member 33, while each intermediate adhesive layer 37 is formed in a concave shape toward the elastic member 33. It has a shape. Such a bag does not disappear completely even when the diaper is worn.

  In the side panel 3 formed as described above, the elastic member 33c arranged at least on the most crotch part C side among the plurality of elastic members 33 has both end portions (ends near the center line CL) of the elastic member 33c. One end of the portion 33I and the end 33O on the outer side in the X direction is located between the main body side adhesive layer 35 and the outer side adhesive layer 36, and the other end is It is located in the main body side adhesive layer 35 or the outer side adhesive layer 36. Specifically, in the diaper 1A, before the wearing state of the disposable diaper 1A to the wearer is completed, the elastic member 33c has its both ends (the end 33I near the center line CL and the end on the X direction outer side). One end of the portion 33 </ b> O) is located between the main body side adhesive layer 35 and the outer side adhesive layer 36. Here, “until the wearing state of the disposable diaper 1A to the wearer” means not only the state before the use of the diaper 1A immediately after the diaper 1A is taken out of the product package but also the wearing of the diaper 1A. This means that the fastening tape 4 is pulled to extend the stretchable side panel 3 for the first time and the diaper 1A is worn. In the diaper 1 </ b> A, as shown in FIG. 2, in the extended state of the stretchable side panel 3, both ends of the elastic member 33 c (the end 33 </ b> I near the center line CL and the end 33 </ b> O on the outer side in the X direction). An inner end 33I near the center line CL is located between the main body side adhesive layer 35 and the outer side adhesive layer 36. The end portion 33 </ b> O on the outer side in the X direction is located on the outer side adhesive layer 36.

  In the diaper 1 </ b> A, most of the plurality of elastic members 33 inclined and extended in the X direction have both end portions (an end portion 33 </ b> I near the center line CL and an end portion 33 </ b> O on the outer side in the X direction). ) Extends beyond the main body side adhesive layer 35 and the outer side adhesive layer 36. At both ends of the elastic member 33 (the end portion 33I near the center line CL and the end portion 33O on the X direction outer side) beyond the main body side adhesive layer 35 and the outer side adhesive layer 36, the contraction force is no longer applied. It does not have, and is in a state where it cannot be stretched.

In the diaper 1 </ b> A, the skin side sheet 31 of the stretchable side panel 3 is outward in the X direction from the end portion 33 </ b> O on the outer side in the X direction of the elastic member 33, as shown in FIGS. 2 and 3. Similarly, the non-skin side sheet 32 also has an extending portion 31 </ b> S that extends outward in the X direction from the end portion 33 </ b> O on the outer side in the X direction of the elastic member 33. 32S.
The extending portions 31S and 32S are fixed by heat seal embossing by various known methods, for example. When an adhesive is used, only heat seal embossing is preferable in consideration of bleeding at the end and stickiness. The adhesive may be solid or intermittently applied and then fixed by pressurization. The extension portions 31S and 32S can be fixed together by using an adhesive from the viewpoint that the outer side portion 3S of the stretchable side panel 3 is difficult to bend during use.

  As shown in FIG. 3, the fastening tape 4 is bonded to only the non-skin facing surface (Q-side surface) of the side panel 3 via the bonding region 6 in the diaper 1 </ b> A. Specifically, in the diaper 1 </ b> A, as shown in FIG. 3, the X direction in the X direction of the fastening tape 4 (near the center line CL) is the X in the non-skin side sheet 32 constituting the stretchable side panel 3. It is attached only to the outwardly extending portion 32S, and is attached only to the non-skin facing surface (Q-side surface) of the extending portion 32S. In the diaper 1 </ b> A, the fastening tape 4 is attached so as to be unevenly distributed near the end 3 u on the back side B side in the Y direction of the stretchable side panel 3, as shown in FIG. 2. In the diaper 1 </ b> A, the fastening tape 4 is attached only to the non-skin facing surface of the side panel 3, but may be attached only to the skin facing surface of the side panel 3. You may attach to both surfaces of an opposing surface and a skin opposing surface.

  The fastening tape 4 provided on the outer side portion 3S of the stretchable side panel 3 will be described in detail. There are a plurality of fastening tapes 4 on the outer side of the tape base sheet 41 and the tape base sheet 41 in the X direction. A hook member 42 having a plurality of engaging projections. The fastening tape 4 is folded before use, and is unfolded and used as shown in FIG. 3 at the time of use. As shown in FIG. 2, the fastening tape 4 of the diaper 1 </ b> A has a substantially trapezoidal shape having an upper base on the outer side in the X direction in the unfolded state. The fastening tape 4 is formed by fixing a hook material 42 on the outer side in the X direction of the tape base sheet 41 formed to be equal to the shape of the fastening tape 4 in plan view. In addition, the landing sheet 5 which fixes the hook material 42 of the fastening tape 4 is provided in the outer surface of the stomach side part A of the diaper 1A, as shown in FIG.

  As shown in FIG. 2, in the joining area | region 6 which joins the fastening tape 4 and the side panel 3, in the diaper 1A, while being formed with the adhesive agent 62, several formed by heat sealing or ultrasonic sealing They are joined via the individual fused portions 61. As shown in FIG. 2, the bonding region 6 has a fusion part group 61G in which a plurality of small fusion parts 61 are regularly arranged in the Y direction, and a plurality of fusion part groups 61G are arranged in the X direction. doing. The bonding region 6 is in the range of 10% to 50% with respect to the total area of the stretchable side panel 3 when the stretchable side panel 3 in a natural state is viewed from the viewpoint of adhesive strength. Is preferable, and it is still more preferable that it is the range of 10% or more and 40% or less.

The shape of the fusion | melting part 61 is not restrict | limited in particular, Arbitrary shapes, such as circular, a rhombus, a triangle, a polygon, may be sufficient other than vertically long ellipse like the diaper 1A, for example. Seal pattern area of one of the fused portion 61, from the viewpoint of the adhesive strength increases with so as not to impair the wearing feeling, it preferably at 2 mm ² or more 30 mm ² or less, and 2 mm ² or more 20 mm ² or less Is more preferable. From the same viewpoint, the interval between the fusion parts 61 adjacent 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 point of view, the distance between the adjacent adjacent fused parts 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 fused portions 61 is preferably 1 / cm ² or more and 16 / cm ² or less, and preferably 2 / cm ² or more and 10 / cm ² or less. More preferably. Furthermore, the ratio of the total seal pattern area of the plurality of fused portions 61 to the area of the bonding region 6 is preferably 10% or more and 70% or less, and more preferably 10% or more and 50% or less from the same viewpoint.

  In the diaper 1A, as shown in FIGS. 2 and 3, most of the plurality of elastic members 33 are configured such that an end portion 33O on the outer side portion 3S side of the side panel 3 is an outer side adhesive layer. It is fixed to the seats 31 and 32 constituting the side panel 3 via a fusion part 61 formed by a seal outside the direction 36 in the X direction. In the diaper 1 </ b> A, as shown in FIG. 2, the end portions 33 </ b> O of the plurality of elastic members 33 constitute the side panel 3 with a seal outside the outer side adhesive layer 36 in the X direction. Although fixed to the sheets 31 and 32, as shown in FIG. 4, it may be fixed to the sheets 31 and 32 constituting the side panel 3 by a seal, overlapping the outer side adhesive layer 36.

  When wearing the diaper 1 </ b> A, as shown in FIG. 5, the fastening tape 4 is unfolded, the fastening tape 4 is pulled by hand, and the side panel 3 is extended, and the hook material 42 of the fastening tape 4 is used. Is pressed against the landing sheet 5 and fastened.

The constituent material of the diaper 1A will be described.
As the surface sheet 21, the back sheet 22, and the absorbent body 23 constituting the absorbent main body 2, those conventionally used for absorbent articles such as disposable diapers and sanitary napkins can be used without particular limitation. . For example, as the surface sheet 21, a hydrophilic and liquid-permeable nonwoven fabric, a three-dimensional aperture film, or the like can be used. As the back sheet 22, a liquid-impermeable or liquid-impermeable film or non-woven fabric (for example, spunbond-meltblown-spunbond non-woven fabric, air-through non-woven fabric, spunbond non-woven fabric, spunlace non-woven fabric, needle punched non-woven fabric, etc.) is used. it can. Or you may use as a composite sheet which laminated | stacked these. Moreover, as the absorbent body 23, an aggregate of fibers such as pulp fibers (may be a non-woven fabric) or an absorbent core in which water-absorbing polymer particles are held by the absorbent core 23 is made of water-permeable thin paper or non-woven fabric. Those coated with a core wrap sheet can be used. As the side sheet 24 constituting the three-dimensional guard, a film, a nonwoven fabric, a woven fabric, or a laminate sheet thereof can be used.
As the skin-side sheet 31 and the non-skin-side sheet 32 constituting the stretchable side panel 3, various sheet materials conventionally used for absorbent articles such as disposable diapers and sanitary napkins are used without particular limitation. be able to.
For example, as the skin side sheet 31 and the non-skin side sheet 32, a nonwoven fabric, a woven fabric, a film, or a laminated sheet thereof can be used.

The elastic elastic member 33 constituting the stretchable side panel 3, the elastic member 25 constituting the three-dimensional guard, and the leg elastic member 26 include natural rubber, polyurethane, polystyrene-polyisoprene copolymer, polystyrene-polybutadiene copolymer. A thread-like or string-like elastic member made of a coalescence, a polyethylene-α-olefin copolymer such as ethyl acrylate-ethylene, or the like can be used. The plurality of elastic members 33 arranged on the stretchable side panel 3 are preferably arranged of the same type at the same elongation rate from the viewpoint of manufacturing cost, simplification of the manufacturing process, and the like.
The adhesive 62 in the bonding region between the fastening tape 4 and the side panel 3, including the adhesive that forms the main body side adhesive layer 35, the outer side adhesive layer 36, and the intermediate adhesive layer 37 of the stretchable side panel 3. Alternatively, preferable materials for the adhesive for joining the members include amorphous polyolefin, ethylene-vinyl acetate copolymer (EVA), ethylene-acrylic acid ester copolymer (EEA), styrene-butadiene- Styrene block copolymer (SBS), styrene-isoprene-styrene block copolymer (SIS), styrene-ethylene / butylene-styrene block copolymer (SEBS), styrene-ethylene / propylene-styrene block copolymer (SEPS) ) And the like, and mixtures thereof. The adhesive is preferably a hot melt type.

  The coating pattern such as adhesive forming each adhesive layer 35, 36, 37 is preferably so-called solid using a spray gun, coater gun or the like as an adhesive coating machine. Using a bead gun, a spiral spray gun, an omega-shaped spray gun, a transfer roll, or the like as a coating machine, pattern coating such as a linear shape, a spiral shape, an omega shape, or a dot shape can also be performed.

  If the hook material 42 and the tape base material sheet 41 which form the fastening tape 4 are normally used for absorbent articles, such as a disposable diaper, it can be especially used without a restriction | limiting. For example, as the hook material 42, “Magic tape (registered trademark)” (manufactured by Kuraray), “Quicklon (registered trademark)” (manufactured by YKK), “Majikurosu (registered trademark)” (manufactured by Kanebo Bell Touch) The male member etc. in etc. can be used. As the tape base material sheet 41, a synthetic resin such as polyethylene, polypropylene, and polyethylene terephthalate, and a sheet or a nonwoven fabric made of a composite material of two or more of these synthetic resins can be used.

The stretchable side panel 3 provided in the disposable diaper of the present invention is not limited in its manufacturing method, and can be manufactured by any method.
A preferable example of the method for manufacturing the side panel in the disposable diaper will be described by taking as an example the case of manufacturing the stretchable side panel 3 in the diaper 1A.

  An example of a preferable manufacturing method of the stretchable side panel 3 will be described with reference to FIG. 6. The stretchable sheet manufacturing apparatus 7 shown in FIG. 6 is a pair of yarn conveying units arranged in parallel at a predetermined interval. A direction in which the elastic member is wound around the longitudinal structures 71 and 71 and the pair of the longitudinal structures for yarn conveyance so that the direction of the elastic members intersects the longitudinal direction (R direction in the drawing) of the longitudinal structures for yarn conveyance The elastic body winding means 72 and the elastic member 33 wound around the elastic body winding means 72 and conveyed by the longitudinal structure for yarn conveyance are arranged between a pair of belt-like sheets 31 ′ and 32 ′. And an integration means 73 for integrating with each other. The longitudinal structure 71 for yarn conveyance has a forward running portion that moves in the R direction and a reverse feeding portion that moves in the opposite direction to the R direction, and only the forward running portion engages with the elastic member 33 to An endless belt that conveys the elastic member 33 in the R direction is preferably used. The endless belt is stretched over a pulley or gear, and is driven by rotating the pulley or gear. Further, only one such endless belt can be used as each individual yarn conveying longitudinal structure 71. However, as shown in FIG. It is preferable to use an endless belt arranged in two upper and lower stages. By providing a difference in speed between the upper and lower belts, the elastic member 33 is spaced in the R direction in the direction of the elastic member 33 that was zigzag in plan view when wound around the pair of longitudinal structures 71 for yarn conveyance. And fixed between a pair of belt-like sheets 31 ′ and 32 ′ after being corrected to a state in which a large number of them are inclined parallel to each other or in a state in which the elastic members 33 are oriented in a parallel manner with a plurality of intervals in the R direction. Can do. As the thread conveying longitudinal structure 71, a round bar-like body having grooves and ridges spirally formed on the peripheral surface thereof and driven to rotate around the central axis can also be used.

In a preferable manufacturing method of the side panel 3, as shown in FIG. 6, a main body side adhesive layer 35, an outer side adhesive layer 36, and an intermediate fixing portion 37 are provided on a belt-like sheet 31 ′ that is a raw sheet of the sheet 31. The adhesive 34 to be formed is continuously applied in a band shape by a known adhesive application machine 76. The adhesive 34 may be continuously applied to the belt-like sheet 32 ′.
Then, the belt-like sheets 31 ′ and 32 ′ after the adhesive application are merged so that a large number of stretched elastic members 33 inclined in parallel are sandwiched therebetween, and a pair of integration means 73 is formed. With the nip roll 74, they are pressurized and integrated from above and below. Then, by cutting the elastic member 33 extending laterally by a cutting means 77 such as a cutter provided with a cutting blade, a stretchable sheet 3 ′ having elastic members 33 in an elongated state inclined in a parallel manner is obtained. can get.
Then, the obtained stretchable sheet 3 ′ is sequentially cut to the length of each side panel 3 by an arbitrary cutting means. In this way, the stretchable side panel 3 can be efficiently and continuously produced.

The diaper 1 </ b> A can be manufactured using the continuous body of the side panels 3 (elastic sheet 3 ′) as described below, for example.
Specifically, for example, the diaper 1A can be efficiently manufactured by the following procedures (1) to (9) using the continuous body of the side panel 3 (elastic sheet 3 ′).
(1) The continuous web obtained by applying the adhesive 62 to the continuous web of the fastening tape 4 having the fastening portion 41 is cut into lengths of the individual fastening tapes 4 in order, and the expansion and contraction obtained as described above. Intermittently attached to the adhesive sheet 3 '. (2) The fastening tape 4 is folded and temporarily fixed to the stretchable sheet 3 ′. (3) The stretchable sheet 3 ′ is sequentially cut to the length of each side panel 3. (4) In order to obtain the side sheet 24, the both sides of the continuous sheet are folded back in a separate process. The elastic member 25 is fixed with an adhesive in an extended state to one of the folded back tops, and the elastic member 26 is fixed to the other folded top with an adhesive in an extended state. (5) A top sheet continuous body in which the side sheet 24 and the top sheet 21 obtained in the separate steps are fixed by heat sealing or the like is formed. (6) The resin film and the outer nonwoven fabric are integrated through an adhesive layer in a separate step to form a back sheet 22 continuous body. (7) The adhesive is continuously applied to the outer side portion of the back sheet 22, and the side panel 3 to which the fastening tape 4 is attached is fixed to the back sheet continuous body via the adhesive. . (8) A continuous diaper 1A in which the absorbent body 23 is intermittently disposed in the flow direction between the backsheet continuous body and the topsheet continuous body to which the side panel 3 is attached, and is fixed and integrated with an adhesive. Form the body. (9) A diaper 1A is continuously manufactured by cutting a continuous body of diapers 1A for each product.

  The manufacturing method of a disposable diaper can manufacture a disposable diaper according to a conventionally well-known method except using the side panel 3 obtained as mentioned above.

Next, the effect at the time of using the diaper 1A of embodiment of this invention mentioned above is demonstrated.
As shown in FIGS. 2 and 3, the diaper 1A has a simple shape in which the stretchable side panel 3 extends in parallel to each other in the longitudinal direction (Y direction) of the absorbent body in the stretched state. is there. Thus, the side panel 3 of the diaper 1A has a shape with little trim loss at the time of manufacture. Further, as shown in FIG. 2, the diaper 1A relates to an elastic member 33c disposed at least on the crotch part C side among a plurality of elastic members 33 constituting the side panel 3, and both end portions of the elastic member 33c. One end portion 33I of 33I and 33O is located between the main body side adhesive layer 35 and the outer side adhesive layer 36, and the other end portion 33O is located on the outer side adhesive layer 36. doing. For this reason, the contraction force of the elastic member 33c on the crotch C side, which is the lowermost end, is weak. Since one end portion 33I of the elastic member 33c at the lowermost end is fixed with a bonding strength weaker than that of the other end portion 33O, the elastic member (thread rubber) is likely to come off at one end portion 33I when subjected to strong tension. Therefore, the rubber mark is hardly attached to the leg part by the elastic member 33c on the crotch part C side, which is easy to make the rubber mark around the leg while wearing the diaper 1A (see FIG. 5), and the feeling of use is improved. Since the other end portion 33O is positioned on the outer side adhesive layer 36, when the fastening tape 4 is pulled during mounting, the elastic member positioned on the other end portion 33O is also pulled, and when a strong pull occurs. The elastic member can be easily detached at the other end portion 33O, and the portion where the lower end of the elastic side panel 3 and the absorbent main body 2 cross each other is close to a right angle, and the skin around the leg is easy to bite. The absence of the elastic member fixing portion is preferable because the pressure on the legs can be further reduced. In addition, such an effect is such that one end of both end portions 33I and 33O of the elastic member 33c is connected to the main body side adhesive layer 35 before the wearing state of the disposable diaper 1A to the wearer is completed. If the other end portion is located between the main body side adhesive layer 35 or the outer side adhesive layer 36 and located between the outer side adhesive layer 36 and the other end portion, this is an effect. From the normal production until before use by the consumer, there is no tension that causes the elastic member 33 to come off, and such tension is generated only at the time of wearing.

  Further, as shown in FIGS. 2 and 3, the diaper 1 </ b> A is arranged at least on the crotch part C side among the plurality of elastic members 33 constituting the side panel 3 in the stretchable side panel 3 in the stretched state. With respect to the elastic member 33c thus formed, its extending direction intersects with the extending direction of the end edges 3u, 3d of the side panel 3 in the Y direction at an intersecting angle θ1. Therefore, even when the disposable diaper 1 </ b> A is worn, one end 33 </ b> I of both ends 33 </ b> I and 33 </ b> O of the elastic member 33 c closest to the crotch C is the main body side adhesive layer 35 and the outer side adhesive. It is easy to move between the layer 36 and the above effect can be obtained.

  Further, unlike the diapers 1B to 1I of the second to ninth embodiments to be described later, the diaper 1A has a plurality of pieces constituting the side panel 3 in the stretchable side panel 3 as shown in FIG. The elastic member 33 is spaced substantially equal in the Y direction from the elastic member 33c arranged on the crotch C side that intersects with the extending direction of the edge 3u, 3d in the Y direction of the side panel 3 at the intersection angle θ1. Thus, the elastic members 33 are arranged so as to be substantially parallel to each other and apply a contraction force around the legs. Therefore, when the fastening tape 4 is pulled and worn, it is more effective to fit around the wearer's legs and is less likely to slip off. In the design of such a diaper 1 </ b> A, it is further important that the above effects are achieved.

  Further, as shown in FIG. 3, the diaper 1A is a sheet that constitutes the side panel 3 with a seal in which the end portions 33O of the plurality of elastic members 33 are outside the outer side adhesive layer 36 in the X direction. 31 and 32 are fixed. Therefore, even when the elastic member 33 other than the elastic member 33c arranged on the most crotch C side is pulled for fastening the diaper 1A and the stretchable side panel 3 is extended for the first time. The elastic member 33 fixed by the seal is pulled, and one end portion 33I of the both end portions 33I and 33O of the elastic member 33 is between the main body side adhesive layer 35 and the outer side adhesive layer 36. The above effects can be further achieved.

  Next, the disposable diaper of 2nd-9th embodiment of this invention is demonstrated, referring FIGS. 7-14. Regarding the diapers 1B to 1I of the second to ninth embodiments, differences from the diaper 1A of the first embodiment will be mainly described, and the same points will be denoted by the same reference numerals and description thereof will be omitted. About the point which is not mentioned especially, the description regarding the diaper 1A of 1st Embodiment is applied suitably.

  In the diaper 1B of the second embodiment, as shown in FIG. 7, the stretchable side panel 3 is formed in a rectangular shape in a state of being expanded in a planar shape, as in the diaper 1A. Both end edges 3u, 3d extend not only in parallel to each other, but also the side edges 3i, 3o along the Y direction extend in parallel to each other. The extending direction of the end edges 3u, 3d and the extension of both side edges 3i, 3o The outgoing direction intersects at a right angle. Moreover, in the diaper 1B, like the diaper 1A, the extending direction of the side edges 3i, 3o along the Y direction of the side panel 3 and the absorbent body longitudinal direction (Y direction) of the absorbent body 2 are parallel to each other. As shown, stretchable side panels 3 are attached to both side portions 2S of the back side portion B of the absorbent main body 2.

  In the diaper 1B of the second embodiment, as shown in FIG. 7, each elastic member 33 has its extending direction intersecting with the extending direction of the edges 3u, 3d in the Y direction of the side panel 3 at an intersecting angle θ2. As shown in the figure, they are arranged with an approximately equal interval in the Y direction in a state where they are inclined and extended in the X direction. The crossing angle θ2 is preferably 150 ° or more, more preferably 160 ° or more, and preferably less than 180 °, from the viewpoints of stretchability, fit, aesthetics, and the like, and is preferably 175 ° or less. More specifically, it is preferably 150 ° or more and less than 180 °, and more preferably 160 ° or more and 175 ° or less. As described above, in the diaper 1B, the extending direction of the side edges 3i, 3o along the Y direction of the rectangular side panel 3 and the longitudinal direction (Y direction) of the absorbent main body 2 are defined. Since they are parallel, the extension direction of the elastic member 33 also intersects the width direction (X direction) of the absorbent main body 2 at the intersection angle θ2.

  In the side panel 3 of the diaper 1 </ b> B formed as described above, as shown in FIG. 7, both ends of the elastic member 33 c (mostly disposed on the crotch part C side) in the extended state of the stretchable side panel 3 ( Outer end portion 33 </ b> O of end portion 33 </ b> I near center line CL and end portion 33 </ b> O on the outer side in the X direction is located between main body side adhesive layer 35 and outer side adhesive layer 36. The end 33I near the center line CL is located on the main body side adhesive layer 35.

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

The effect at the time of using the diaper 1B mentioned above is demonstrated.
About the effect of the diaper 1B, a different point from the effect of the diaper 1A is demonstrated. The point which is not demonstrated especially is the same as that of the effect of diaper 1A, and description of the effect of diaper 1A is applied suitably.
As shown in FIG. 7, the diaper 1B has an elastic member 33 disposed on the stretchable side panel 3 so that a contraction force is applied to the waist end side. For this reason, when the fastening tape 4 is pulled and worn, it is designed to fit more to the wearer's back side and to prevent the gap from being vacant, and the effect of preventing leakage of excrement from the back is improved.

  In the diaper 1C of the third embodiment, as shown in FIG. 8, the stretchable side panel 3 is formed in a rectangular shape in a state of being expanded in a planar shape, as in the diaper 1A. Both end edges 3u, 3d extend not only in parallel to each other, but also the side edges 3i, 3o along the Y direction extend in parallel to each other. The extending direction of the end edges 3u, 3d and the extension of both side edges 3i, 3o The outgoing direction intersects at a right angle. Moreover, in the diaper 1C, the extending direction of the side edges 3i, 3o along the Y direction of the side panel 3 and the absorbent main body longitudinal direction (Y direction) of the absorbent main body 2 are parallel to each other, as in the diaper 1A. As shown, stretchable side panels 3 are attached to both side portions 2S of the back side portion B of the absorbent main body 2.

  In the diaper 1 </ b> C of the third embodiment, as shown in FIG. 8, with respect to the elastic member 33 constituting the stretchable side panel 3, the extension direction of some of the elastic members 33 </ b> A among the plurality of elastic members 33 is The extending direction of the remaining elastic member 33B among the plurality of elastic members 33 intersects. More specifically, the elastic member 33 constituting the side panel 3 of the diaper 1C includes a first elastic member 33A and a second elastic member 33B, and the extending direction of the first elastic member 33A and the extending direction of the second elastic member 33B. Are inclined in the X direction and are alternately arranged in the Y direction so as to intersect at an intersection angle θ3. The crossing angle θ3 is preferably 5 ° or more, more preferably 10 ° or more, and preferably 30 ° or less, and 20 ° or less from the viewpoints of stretchability, fit, and aesthetics. More specifically, it is preferably 5 ° to 30 °, more preferably 10 ° to 20 °. The interval between the first elastic members 33A adjacent to each other in the Y direction is preferably 6 mm or more and 30 mm or less from the viewpoint of stretchability, fit, and flexibility. The interval between the second elastic members 33B adjacent 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 1 </ b> C formed as described above, as shown in FIG. 8, in the stretched state of the stretchable side panel 3, the elasticity arranged on the most crotch part C side of the first elastic member 33 </ b> A. Of the both ends of the member 33c (the end portion 33I near the center line CL and the end portion 33O on the X direction outer side), the end portion 33I near the center line CL is the main body side adhesive layer 35 and the outer side adhesive. The end portion 33 </ b> O on the outer side in the X direction is located on the outer side adhesive layer 36.

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

The effect at the time of using the diaper 1C mentioned above is demonstrated.
About the effect of the diaper 1C, a different point from the effect of the diaper 1A is demonstrated. The point which is not demonstrated especially is the same as that of the effect of diaper 1A, and description of the effect of diaper 1A is applied suitably.
In the diaper 1 </ b> C of the third embodiment, as shown in FIG. 8, with respect to the elastic member 33 constituting the stretchable side panel 3, the extension direction of some of the elastic members 33 </ b> A among the plurality of elastic members 33 is The extending direction of the remaining elastic member 33B among the plurality of elastic members 33 intersects. Therefore, contraction force is applied to both the waist end side and the leg circumference, and the fit is improved in response to the movement of the wearer and the change in the body shape.

  In the diaper 1D of the fourth embodiment, as shown in FIG. 9, the stretchable side panel 3 is formed in a rectangular shape in a state of being expanded in a planar shape, as in the diaper 1A. Both end edges 3u, 3d extend not only in parallel to each other, but also the side edges 3i, 3o along the Y direction extend in parallel to each other. The extending direction of the end edges 3u, 3d and the extension of both side edges 3i, 3o The outgoing direction intersects at a right angle. Moreover, in the diaper 1C, the extending direction of the side edges 3i, 3o along the Y direction of the side panel 3 and the absorbent main body longitudinal direction (Y direction) of the absorbent main body 2 are parallel to each other, as in the diaper 1A. As shown, stretchable side panels 3 are attached to both side portions 2S of the back side portion B of the absorbent main body 2.

  In the diaper 1D of the fourth embodiment, as shown in FIG. 9, with respect to the elastic member 33 constituting the stretchable side panel 3, the extension direction of some of the elastic members 33D among the plurality of elastic members 33 is The extending direction of the remaining elastic member 33E among the plurality of elastic members 33 intersects. More specifically, the elastic member 33 constituting the side panel 3 of the diaper 1D includes a third elastic member 33D and a fourth elastic member 33E. In the central region in the X direction of the side panel 3, the third elastic member 33D The fourth elastic member 33E is inclined in the X direction so as to intersect with the intersection angle θ4, and is alternately arranged in the Y direction. The crossing angle θ4 is preferably 5 ° or more, more preferably 10 ° or more, and preferably 30 ° or less, and 20 ° or less from the viewpoints of stretchability, fit, aesthetics, and the like. More specifically, it is preferably 5 ° to 30 °, more preferably 10 ° to 20 °. The distance between the third elastic members 33D adjacent in the Y direction is preferably 3 mm or more and 15 mm or less from the viewpoints of stretchability, fit, and flexibility. The interval between the fourth elastic members 33E adjacent in the Y direction is the same as the interval between the third elastic members 33D adjacent 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 elasticity disposed on the most crotch part C side of the third elastic member 33D. Of the both ends of the member 33c (the end portion 33I near the center line CL and the end portion 33O on the X direction outer side), the end portion 33I near the center line CL is the main body side adhesive layer 35 and the outer side adhesive. The end portion 33 </ b> O on the outer side in the X direction is located on the outer side adhesive layer 36. Further, the outer side of the both end portions (the end portion 33I near the center line CL and the end portion 33O on the X direction outer side) of the elastic member 33c arranged on the most crotch portion C side of the fourth elastic member 33E. The end portion 33O is also located between the main body side adhesive layer 35 and the outer side adhesive layer 36, and the end portion 33I near the center line CL is located in the main body side adhesive layer 35.
When the elastic members 33D and 33E intersect as shown in FIG. 9, the elastic member at the lowermost end is the lowermost elastic member that intersects the lower end edge of the stretchable panel 3, and the elastic member and the absorbent main body 2 from the outer side. When two elastic members from the side cross the lower end edge of the stretchable panel 3, the two elastic members are the lowermost elastic members.

  The stretchable side panel 3 of the diaper 1D can be manufactured 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 at the time of using diaper 1D mentioned above is demonstrated.
About the effect of diaper 1D, a different point from the effect of diaper 1A is demonstrated. The point which is not demonstrated especially is the same as that of the effect of diaper 1A, and description of the effect of diaper 1A is applied suitably.
In the diaper 1D of the fourth embodiment, as shown in FIG. 9, with respect to the elastic member 33 constituting the stretchable side panel 3, the extension direction of a part of the elastic members 33 </ b> A among the plurality of elastic members 33 is used. The extending direction of the remaining elastic member 33B among the plurality of elastic members 33 intersects. Therefore, contraction force is applied to both the waist end side and the leg circumference, and the fit is improved in response to the movement of the wearer and the change in the body shape.

  In the diaper 1E of the fifth embodiment, as shown in FIG. 10, the side edges 3i and 3o along the Y direction extend in parallel with each other in the extended state in which the stretchable side panel 3 extends in a planar shape. The extending direction of the side edges 3i, 3o of the side panel 3 and the extending direction of the end edges 3u, 3d in the Y direction of the side panel 3 do not intersect at right angles. That is, as shown in FIG. 10, the side panel 3 of the diaper 1E is formed in a parallelogram in the extended state. The extending direction of the side edges 3i, 3o of the side panel 3 and the extending direction of the end edges 3u, 3d in the Y direction of the side panel 3 intersect at an intersecting angle θ5. The intersection angle θ5 is preferably 60 ° or more, more preferably 70 ° or more, and preferably 85 ° or less, and 80 ° or less from the viewpoints of stretchability, fit, aesthetics, and the like. More 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, as in the diaper 1A, the extending direction of the side edges 3i, 3o along the Y direction of the side panel 3 and the absorbent main body longitudinal direction (Y direction) of the absorbent main body 2 are parallel to each other. As shown, stretchable side panels 3 are attached to both side portions 2S of the back side portion B of the absorbent main body 2.

  In the diaper 1E of the fifth embodiment, as shown in FIG. 10, each elastic member 33 has its extending direction intersecting with the extending direction of the edges 3u, 3d in the Y direction of the side panel 3 at an intersecting angle θ6. As shown in the figure, they are arranged with an approximately equal interval in the Y direction in a state where they are inclined and extended in the X direction. The intersection angle θ6 is not particularly limited in terms of the lower limit value from the viewpoints of stretchability, fit, aesthetics, etc., preferably greater than 0 °, more preferably 5 ° or more, and 30 ° or less. It is preferably 20 ° or less, specifically, more than 0 ° and 30 ° or less, and more preferably 5 ° or more and 20 ° or less.

  As described above, in the diaper 1E, the extending direction of the side edges 3i, 3o along the Y direction of the side panel 3 and the absorbent main body longitudinal direction (Y direction) of the absorbent main body 2 are parallel. However, the extending direction of the elastic member 33 intersects the width direction (X direction) of the absorbent main body 2 at an intersection angle θ7. The intersection angle θ7 is preferably −10 ° or more, more preferably −5 ° or more, and preferably 10 ° or less from the viewpoints of stretchability, fit, aesthetics, and the like. It is more preferable that the angle is not more than °, specifically, it is preferably not less than -10 ° and not more than 10 °, and more preferably not less than -5 ° and not more than 5 °.

  In the side panel 3 of the diaper 1E formed as described above, as shown in FIG. 10, both ends of the elastic member 33c (mostly located on the crotch C side) in the extended state of the stretchable side panel 3 ( The end portion 33I near the center line CL of the end portion 33I near the center line CL and the end portion 33O on the X direction outer side is between the main body side adhesive layer 35 and the outer side adhesive layer 36. The X direction outer side end portion 33 </ b> O is located on the outer side adhesive layer 36.

  The elastic side panel 3 of the diaper 1E is obtained by changing the speed difference between the upper and lower belts in the manufacturing method of the side panel 3 of the diaper 1A by using an arbitrary cutting means. It can be manufactured by sequentially cutting diagonally.

The effect at the time of using the diaper 1E mentioned above is demonstrated.
About the effect of the diaper 1E, a different point from the effect of the diaper 1A is demonstrated. The point which is not demonstrated especially is the same as that of the effect of diaper 1A, and description of the effect of diaper 1A is applied suitably.
In the diaper 1E of the fifth embodiment, as shown in FIG. 10, the side edges 3i and 3o along the Y direction extend in parallel with each other in the extended state in which the stretchable side panel 3 extends in a planar shape. The extending direction of the side edges 3i, 3o of the side panel 3 and the extending direction of the end edges 3u, 3d in the Y direction of the side panel 3 do not intersect at right angles. Therefore, the circumference around the legs and waist increases, and in particular, because the distance from the intersection between the edge 3u in the Y direction of the side panel 3 and the side edge 2Si of the absorbent main body to the fastening tape 4 is large. The circumference around the waist increases, and it is difficult to tighten around the abdomen even when the fluctuation of the abdominal circumference is large like a young infant.

  Moreover, in the diaper 1E of 5th Embodiment, as shown in FIG. 10, the expansion | extension direction of the elastic member 33c distribute | arranged to the crotch part C side of the elastic members 33, and the width direction ( X direction) is substantially parallel. Therefore, when the fastening tape 4 is pulled and worn, the expansion and contraction directions of the side panels 3 and 3 become substantially parallel and follow the circumferential direction of the waist. Therefore, the fit of the back part is improved, and the contraction force of the elastic member 33c on the crotch part C side is weak, so that it is difficult to make a mark around the leg.

  In the diaper 1F of the sixth embodiment, as shown in FIG. 11, the side edges 3i and 3o along the Y direction extend in parallel with each other in the extended state in which the stretchable side panel 3 extends in a planar shape. The extending direction of the side edges 3i, 3o of the side panel 3 and the extending direction of the end edges 3u, 3d in the Y direction of the side panel 3 do not intersect at right angles. That is, as shown in FIG. 11, the side panel 3 of the diaper 1F is formed in a parallelogram in the extended state. The extending direction of the side edges 3i, 3o of the side panel 3 and the extending direction of the end edges 3u, 3d in the Y direction of the side panel 3 intersect at an intersecting angle θ8. The crossing angle θ8 is preferably 95 ° or more, more preferably 100 ° or more, and preferably 120 ° or less, and 110 ° or less from the viewpoints of stretchability, fit, aesthetics, and the like. More specifically, it is preferably 95 ° or more and 120 ° or less, and more preferably 100 ° or more and 110 ° or less.

  Moreover, in the diaper 1F, like the diaper 1A, the extending direction of the side edges 3i, 3o along the Y direction of the side panel 3 and the absorbent main body longitudinal direction (Y direction) of the absorbent main body 2 are parallel to each other. As shown, stretchable side panels 3 are attached to both side portions 2S of the back side portion B of the absorbent main body 2.

  In the diaper 1F of the sixth embodiment, as shown in FIG. 11, each elastic member 33 has its extending direction intersecting with the extending direction of the edges 3u, 3d in the Y direction of the side panel 3 at an intersecting angle θ9. As shown in the figure, they are arranged with an approximately equal interval in the Y direction in a state where they are inclined and extended in the X direction. The crossing angle θ9 is preferably 150 ° or more, more preferably 160 ° or more, and preferably less than 180 °, from the viewpoints of stretchability, fit, aesthetics, and the like, and is preferably 175 ° or less. More specifically, it is preferably 150 ° or more and less than 180 °, and more preferably 160 ° or more and 175 ° or less.

  As described above, in the diaper 1F, the extending direction of the side edges 3i and 3o along the Y direction of the side panel 3 and the absorbent main body longitudinal direction (Y direction) of the absorbent main body 2 are parallel. However, the extending direction of the elastic member 33 intersects the width direction (X direction) of the absorbent main body 2 at an intersection angle θ10. The crossing angle θ10 is preferably 170 ° or more, more preferably 175 ° or more, and preferably 190 ° or less, and 185 ° or less from the viewpoints of stretchability, fit, and aesthetics. More 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 as described above, as shown in FIG. 11, both ends of the elastic member 33c (mostly located on the crotch part C side) in the extended state of the stretchable side panel 3 ( Outer end portion 33 </ b> O of end portion 33 </ b> I near center line CL and end portion 33 </ b> O on the outer side in the X direction is located between main body side adhesive layer 35 and outer side adhesive layer 36. The end 33I near the center line CL is located on the main body side adhesive layer 35.

  In the manufacturing method of the side panel 3 of the diaper 1A described above, the elastic side panel 3 of the diaper 1F is obtained by changing the elastic sheet 3 ′ obtained by changing the speed difference between the upper and lower belts by any cutting means. It can be manufactured by sequentially cutting diagonally.

The effect at the time of using the diaper 1F mentioned above is demonstrated.
About the effect of the diaper 1F, a different point from the effect of the diaper 1A is demonstrated. The point which is not demonstrated especially is the same as that of the effect of diaper 1A, and description of the effect of diaper 1A is applied suitably.
In the diaper 1F of the sixth embodiment, as shown in FIG. 11, the side edges 3i and 3o along the Y direction extend in parallel with each other in the extended state in which the stretchable side panel 3 extends in a planar shape. The extending direction of the side edges 3i, 3o of the side panel 3 and the extending direction of the end edges 3u, 3d in the Y direction of the side panel 3 do not intersect at right angles. For this reason, the peripheral length around the legs and the waist increases, and in particular, the distance from the intersection between the edge 3d in the Y direction of the side panel 3 and the side edge 2Si of the absorbent main body to the fastening tape 4 is large. Especially, the circumference around the legs increases, and even when the legs are active like an older infant, it is difficult to leave marks around the legs.

  Moreover, in the diaper 1F of 6th Embodiment, as shown in FIG. 11, the expansion | extension direction of the elastic member 33c distribute | arranged to the crotch part C side among the elastic members 33, and the width direction (the absorbent main body 2) ( X direction) is substantially parallel. Therefore, when the fastening tape 4 is pulled and worn, the expansion and contraction directions of the side panels 3 and 3 become substantially parallel and follow the circumferential direction of the waist. Therefore, the fit of the back part is improved, and the contraction force of the elastic member 33c on the crotch part C side is weak, so that it is difficult to make a mark around the leg.

  In the diaper 1G of the seventh embodiment, as shown in FIG. 12, the side edges 3i and 3o along the Y direction extend in parallel with each other in the extended state in which the stretchable side panel 3 expands in a planar shape. The extending direction of the side edges 3i, 3o of the side panel 3 and the extending direction of the end edges 3u, 3d in the Y direction of the side panel 3 do not intersect at right angles. That is, as shown in FIG. 12, the side panel 3 of the diaper 1G is formed in a parallelogram in the extended state. The extending direction of the side edges 3i and 3o of the side panel 3 and the extending direction of the end edges 3u and 3d in the Y direction of the side panel 3 intersect at an intersecting angle θ11. The intersection angle θ11 is preferably 60 ° or more, more preferably 70 ° or more, and preferably 85 ° or less, and 80 ° or less from the viewpoints of stretchability, fit, aesthetics, and the like. More specifically, it is preferably 60 ° or more and 85 ° or less, and more preferably 70 ° or more and 80 ° or less.

In the diaper 1G, the extending direction of the side edges 3i, 3o along the Y direction of the side panel 3 and the absorbent main body longitudinal direction (Y direction) of the absorbent main body 2 intersect at an intersection angle θ12. . The crossing angle θ12 is not particularly limited in terms of the lower limit from the viewpoint of stretchability, fit, and side panel adhesion, and is preferably greater than 0 °, more preferably 5 ° or more, and 25 °. It is preferably not more than 20 °, more preferably not more than 20 °, specifically more preferably not less than 0 ° and not more than 25 °, more preferably not less than 5 ° and not more than 20 °.

  In the diaper 1G of the seventh embodiment, as shown in FIG. 12, each elastic member 33 has its extending direction intersecting with the extending direction of the end edges 3u, 3d in the Y direction of the side panel 3 at an intersecting angle θ13. As shown in the figure, they are arranged with an approximately equal interval in the Y direction in a state where they are inclined and extended in the X direction. The crossing angle θ13 is preferably 5 ° or more, more preferably 10 ° or more, and preferably 30 ° or less, and 20 ° or less from the viewpoints of stretchability, fit, and aesthetics. More specifically, it is preferably 5 ° to 30 °, more preferably 10 ° to 20 °.

  As described above, in the diaper 1G, the extending direction of the side edges 3i, 3o along the Y direction of the side panel 3 intersects with the absorbent main body longitudinal direction (Y direction) of the absorbent main body 2. However, since the extending direction of the edges 3u and 3d in the Y direction of the side panel 3 and the width direction (X direction) of the absorbent main body 2 are parallel, the extension direction of the elastic member 33 is the absorbent main body. 2 intersects with the width direction (X direction) at an intersecting angle θ13.

  In the side panel 3 of the diaper 1G formed as described above, as shown in FIG. 12, in the extended state of the stretchable side panel 3, both end portions of the elastic member 33c arranged on the most crotch part C side ( The end portion 33I near the center line CL of the end portion 33I near the center line CL and the end portion 33O on the X direction outer side is between the main body side adhesive layer 35 and the outer side adhesive layer 36. The X direction outer side end portion 33 </ b> O is located on the outer side adhesive layer 36.

  In the manufacturing method of the side panel 3 of the diaper 1A described above, the elastic side panel 3 of the diaper 1G is obtained by changing the elastic sheet 3 ′ obtained by changing the speed difference between the upper and lower belts by any cutting means. It can be manufactured by sequentially cutting diagonally. Moreover, the diaper 1G can be manufactured by fixing the side panel 3 diagonally to the outer side portion of the back sheet 22 via an adhesive in (7) of the manufacturing process of the diaper 1A.

The effect at the time of using the diaper 1G mentioned above is demonstrated.
About the effect of the diaper 1G, a different point from the effect of the diaper 1A is demonstrated. The point which is not demonstrated especially is the same as that of the effect of diaper 1A, and description of the effect of diaper 1A is applied suitably.
In the diaper 1G of the seventh embodiment, as shown in FIG. 12, the side edges 3i and 3o along the Y direction extend in parallel with each other in the extended state where the stretchable side panel 3 expands in a planar shape. The extending direction of the side edges 3i, 3o of the side panel 3 and the extending direction of the end edges 3u, 3d in the Y direction of the side panel 3 do not intersect at right angles. For this reason, since the distance from the side edge 2S1 of the absorbent main body 2 is increased on the crotch side of the fastening tape 4, the perimeter of the leg increases, and the movement of the foot is active as in an older infant. In some cases, it is difficult to leave marks around the legs.

  Moreover, in the diaper 1G of 7th Embodiment, as shown in FIG. 12, the extending direction of the side edges 3i and 3o along the Y direction of the side panel 3, and the absorptive main body longitudinal direction ( And the Y direction) intersect at an intersection angle θ12. Therefore, in the stretchable side panel 3 in the stretched state, the elastic member is arranged so that the contraction force is applied to the periphery of the foot, and the leakage from the periphery of the leg can be prevented.

  In the diaper 1H of the eighth embodiment, as shown in FIG. 13, the stretchable side panel 3 is formed in a rectangular shape, like the diaper 1A, in the extended state in a flat shape, and in the Y direction. Both side edges 3u, 3d extend in parallel to each other, and both side edges 3i, 3o along the Y direction also extend in parallel to each other. The extending direction of the edges 3u, 3d and the side edges 3i, 3o The extending direction intersects at right angles.

  In the diaper 1H, the extending direction of the side edges 3i, 3o along the Y direction of the rectangular side panel 3 and the absorbent main body longitudinal direction (Y direction) of the absorbent main body 2 intersect at an intersecting angle θ14. doing. The crossing angle θ14 is preferably 5 ° or more, more preferably 10 ° or more, and preferably 20 ° or less from the viewpoint of stretchability, fit, and side panel adhesion. More preferably, it is 15 ° or less, specifically 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 elastic member 33 has an extension direction intersecting with the extending direction of the edge 3u, 3d in the Y direction of the side panel 3 at an intersection angle θ15. In a state of extending in an inclined direction, they are arranged at substantially equal intervals in the Y direction. The crossing angle θ15 is preferably 150 ° or more, more preferably 160 ° or more, and preferably less than 180 °, from the viewpoints of stretchability, fit, aesthetics, and the like, and is preferably 175 ° or less. More specifically, it is preferably 150 ° or more and less than 180 °, and more preferably 160 ° or more and 175 ° or less.

  Moreover, in the diaper 1H, as shown in FIG. 13, the extending direction of the side edges 3i, 3o along the Y direction of the side panel 3 and the absorbent main body longitudinal direction (Y direction) of the absorbent main body 2 intersect. It intersects at an angle θ14, and the extending direction of the elastic member 33 intersects the width direction (X direction) of the absorbent main body 2 at an intersecting angle θ16. The crossing angle θ16 is preferably −10 ° or more, more preferably −5 ° or more, and preferably 10 ° or less from the viewpoints of stretchability, fit, aesthetics, and the like. It is more preferable that the angle is not more than °, specifically, it is preferably not less than -10 ° and not more than 10 °, and more preferably not less than -5 ° and not more than 5 °.

  In the side panel 3 of the diaper 1H formed as described above, as shown in FIG. 13, both ends of the elastic member 33c (mostly located on the crotch C side) in the extended state of the stretchable side panel 3 ( Outer end portion 33 </ b> O of end portion 33 </ b> I near center line CL and end portion 33 </ b> O on the outer side in the X direction is located between main body side adhesive layer 35 and outer side adhesive layer 36. The end 33I near the center line CL is located on the main body side adhesive layer 35.

  The stretchable side panel 3 of the diaper 1H can be manufactured by changing the speed difference between the upper and lower belts in the method for manufacturing the side panel 3 of the diaper 1A described above. Moreover, the diaper 1H can be manufactured by fixing the side panel 3 diagonally to the outer side part of the back sheet 22 via an adhesive in (7) of the manufacturing process of the diaper 1A.

The effect at the time of using the diaper 1H mentioned above is demonstrated.
About the effect of the diaper 1H, a different point from the effect of the diaper 1A is demonstrated. The point which is not demonstrated especially is the same as that of the effect of diaper 1A, and description of the effect of diaper 1A is applied suitably.
In the diaper 1H of the eighth embodiment, as shown in FIG. 13, the extending direction of the side edges 3i, 3o along the Y direction of the side panel 3 and the absorbent main body longitudinal direction (Y direction of the absorbent main body 2). ) And the crossing angle θ14. For this reason, since the distance from the side edge 2S1 of the absorbent main body 2 is increased on the crotch side of the fastening tape 4, the perimeter of the leg increases, and the movement of the foot is active as in an older infant. In some cases, it is difficult to leave marks around the legs.

  Moreover, in the diaper 1H of 8th Embodiment, as shown in FIG. 13, the expansion | extension direction of the elastic member 33c distribute | arranged to the crotch part C side among the elastic members 33, and the width direction (the absorptive main body 2). X direction) is substantially parallel. Therefore, when the fastening tape 4 is pulled and worn, the expansion and contraction directions of the side panels 3 and 3 become substantially parallel and follow the circumferential direction of the waist. Therefore, the fit of the back part is improved, and the contraction force of the elastic member 33c on the crotch part C side is weak, so that it is difficult to make a mark around the leg.

  The absorbent article of the present invention is not limited to the diapers 1A to 1H of the first to eighth embodiments described above, and can be appropriately changed. Moreover, each component in the diaper 1A-1H of the above-mentioned 1st-8th embodiment can be implemented suitably combining in the range which does not impair the meaning of this invention.

  For example, in the diapers 1A to 1H of the first to eighth embodiments described above, as shown in FIGS. 2, 4, and 7 to 13, all the extending directions of the plurality of elastic members 33 are side panels. 3 crosses the extending direction of the edges 3u and 3d in the Y direction, but all of the plurality of elastic members 33 constituting the side panel 3 as in the diaper 1I of the ninth embodiment shown in FIG. The extending direction of the side panel 3 may be parallel to the extending direction of the end edges 3u, 3d in the Y direction of the side panel 3. In the diaper 1I of the ninth embodiment, the elastic member 33c disposed on the most crotch C side is located at both ends (the end 33I near the center line CL and the end 33O on the X direction outer side). An end portion 33I near the center line CL is located between the main body side adhesive layer 35 and the outer side adhesive layer 36, and an end portion 33O on the outer side in the X direction is the outer side adhesive layer 36. Is located.

  Moreover, in the diaper 1A-1I of the above-mentioned 1st-9th embodiment, as shown to FIG.2, FIG.4, FIG.7-14, the expansion | extension state which the stretchable side panel 3 expanded in planar shape 2, both end edges 3 u and 3 d in the Y direction extend in parallel to each other, and both side edges 3 i and 3 o along the Y direction also extend in parallel to each other, but only the both end edges 3 u and 3 d in the Y direction What is necessary is just to extend in parallel.

The following disposable diaper is further disclosed regarding the embodiment mentioned above.
<1>
It has a liquid-retaining absorbent body, a top sheet disposed on the skin-facing surface side of the absorbent body, and a back sheet disposed on the non-skin-facing surface side of the absorbent body, and is positioned on the wearer's stomach side when worn An absorptive absorbent main body that is divided into a ventral part, a dorsal part located on the dorsal side, and a crotch part arranged between the ventral part and the dorsal part,
Stretchable side panels extending outward in the width direction are attached to both side portions in the longitudinal direction of the absorbent main body, and the width direction outside of the lateral side portion of the side panel along the absorbent main body longitudinal direction is attached. A disposable diaper with a fastening tape extending toward the
In the stretched state, the side panel has both ends of the absorbent main body in the longitudinal direction extending in parallel with each other, two sheets, a plurality of elastic members extending in the width direction fixed between the two sheets, A main body side adhesive layer that extends in the longitudinal direction of the absorbent main body and is disposed on an end side of the plurality of elastic members on the absorbent main body side, on an end side of the elastic member on the outer side of the side panel An outer side adhesive layer extending in the longitudinal direction of the disposed absorbent body, and a plurality of intermediate adhesives extending in the longitudinal direction of the absorbent body disposed between the body side adhesive layer and the outer side adhesive layer The elastic member in an elongated state having a layer and arranged intermittently in the longitudinal direction of the absorbent main body is bonded between the two sheets with the main body side adhesive layer, the outer side adhesive layer, and the intermediate bond It is fixed through the agent layer,
The intermediate adhesive layer has an adhesive strength weaker than the adhesive strength of each of the main body side adhesive layer and the outer side adhesive layer,
Among the plurality of elastic members, the elastic member arranged at least on the crotch part side is such that one end portion of both end portions of the elastic member has the main body side adhesive layer and the outer side adhesive. The disposable diaper which is located between layers and the other edge part is located in the said main body side adhesive bond layer or the said outer side adhesive bond layer.

<2>
In the stretched side panel, one end of both end portions of the elastic member disposed on the most crotch part side is bonded to the main body side at both side edges along the longitudinal direction of the absorbent main body in the extended state. The disposable diaper <3> according to the above <1>, which is located between the agent layer and the outer side adhesive layer
Among the plurality of elastic members, at least the elastic member disposed on the crotch part side has an extension direction intersecting an extending direction of an end edge of the absorbent body in the longitudinal direction of the side panel < Disposable diaper as described in 1> or <2>.
<4>
The elastic member arranged at least on the crotch part side among the plurality of elastic members is such that one end of both ends of the elastic member completes the wearing state of the disposable diaper to the wearer. The disposable diaper according to any one of <1> to <3>, which is positioned between the main body side adhesive layer and the outer side adhesive layer before.
<5>
The disposable diaper according to any one of <1> to <4>, wherein the intermediate adhesive layer has a width that is narrower than the width of each of the main body side adhesive layer and the outer side adhesive layer.
<6>
The elastic member of a part of the plurality of elastic members has an end on the outer side portion side of the side panel overlapped with the outer adhesive layer or from the outer adhesive layer. The disposable diaper according to any one of <1> to <5>, wherein the disposable diaper is fixed to the sheet constituting the side panel by a seal on the outer side in the width direction.
<7>
Any one of the above <1> to <6>, in which the elastic member disposed at least on the crotch part side among the plurality of elastic members has an extending direction intersecting the width direction of the absorbent main body. The disposable diaper according to 1.
<8>
<1> to <7> in which the extension direction of a part of the plurality of elastic members intersects with the extension direction of the remaining elastic members of the plurality of elastic members. The disposable diaper according to any one of the above.
<9>
In the extended state, both side edges of the side panel along the longitudinal direction of the absorbent main body extend in parallel with each other. The disposable diaper according to any one of <1> to <8>, wherein the extending direction does not intersect at right angles.
<10>
The disposable diaper according to <9>, wherein the extending direction of the side edge of the side panel intersects the absorbent main body longitudinal direction of the absorbent main body.

<11>
The disposable diaper according to any one of <1> to <10>, wherein the other end of the elastic member arranged on the most crotch part side is located in the outer adhesive layer.
<12>
The said side panel is a disposable diaper any one of said <1>-<11> attached to the back side part of the said absorptive main body.
<13>
The two sheets constituting the stretchable side panel are composed of a skin side sheet positioned on the skin facing surface side and a non-skin side sheet positioned on the non-skin facing surface side, and the skin side sheet and the non-skin side The disposable diaper according to any one of <1> to <12>, wherein the sheet is formed in a rectangular shape.
<14>
Any one of the above <1> to <13>, wherein the skin sheet and the non-skin sheet, which are the two sheets, are wider than the length of the elastic member in the expanded state in a state where the sheet is spread in a planar shape. Disposable diapers described in 1.
<15>
The two sheets, the skin-side sheet and the non-skin-side sheet, are formed in the same shape and the same size, or the skin-side sheet and the non-skin-side sheet are side edges of the absorbent main body. The disposable diaper according to any one of the above items <1> to <14>, which has a size such that an extension length from a different length.
<16>
The crossing angle between the extending direction of the elastic member in the stretchable side panel and the extending direction of the edge in the longitudinal direction of the side panel is larger than 0 ° and not larger than 30 °, preferably not smaller than 5 °. The disposable diaper according to any one of <1> to <15>, which is 20 ° or less.
<17>
The disposable diaper according to any one of <1> to <16>, wherein an interval between the elastic members adjacent in the longitudinal direction in the stretchable side panel is 3 mm or more and 15 mm or less.
<18>
The disposable member according to any one of <1> to <17>, wherein the elastic member disposed on the stretchable side panel has a thread shape, and a cross section thereof is substantially circular, square, polygonal, or the like. Diapers.
<19>
The disposable diaper according to the above <18>, wherein the thread-like elastic member in the stretchable side panel has a diameter or width of 0.1 mm to 2 mm, preferably 0.1 mm to 1 mm.
<20>
The disposable diaper according to <18> or <19>, wherein the number of the thread-like elastic members arranged on the stretchable side panel is 2 or more and 25 or less, preferably 3 or more and 20 or less.
<21>
The thread-like elastic member disposed on the stretchable side panel is a single thread-like elastic member having a stress of 0.1 N or more and 1 N or less when stretched to an elongation rate of 100% (natural state is 0%) <18> to the above-described <18> to be fixed in a stretched state in a stretched range of 50% to 300%, and preferably stretched in a range of 100% to 250%. The disposable diaper according to any one of <20>.

<22>
The width of the intermediate adhesive layer is narrower by 30% or more with respect to the width of each of the main body side adhesive layer and the outer side adhesive layer, preferably 50% or more. The disposable diaper according to any one of 1> to <21>.
<23>
The main body side adhesive layer, the outer side adhesive layer, and the intermediate adhesive layer extend in the longitudinal direction across the elastic member, and extend over the entire length in the longitudinal direction of the stretchable side panel. The disposable diaper according to any one of <1> to <22>.
<24>
In the stretchable side panel, the elastic member is fixed in an elongated state by the main body side adhesive layer, the outer side adhesive layer, and the intermediate adhesive layer, and the elastic member contracts naturally. A plurality of ridges are formed on both sides of the side panel, and the ridges are formed to extend in the longitudinal direction so as to intersect the plurality of elastic members, and the ridges are formed on the main body side adhesive layer. The two sheets bulge in a convex shape in a direction away from the elastic member in each non-adhesive region by contraction of the elastic member between the outer adhesive layer and the outer adhesive layer, The disposable diaper according to any one of <1> to <23>, wherein the adhesive layer is formed in a concave shape toward the elastic member and has an uneven shape.
<25>
A side sheet is disposed on each side portion along the longitudinal direction of the absorbent main body via the top sheet, and the side sheet is on the skin facing surface side of the top sheet and extends along the longitudinal direction. It is disposed and fixed over the entire side portion, the inner end portion in the width direction of the side seat is a free end, and an elastic member for forming a three-dimensional gather is in the vicinity of the free end in the crotch portion. It is arranged and fixed in an elongated state in the longitudinal direction, and when worn, a portion having a predetermined width from the free end is separated from the top sheet by the contraction force of the elastic member for forming the three-dimensional gather, and a three-dimensional gather is formed. The disposable diaper according to any one of <1> to <24>.
<26>
Each side part along the longitudinal direction of the absorbent main body is joined with a side sheet and a back sheet extending outward in the width direction, and a flap part is formed,
An elastic member for forming leg gathers is arranged and fixed in an elongated state in the longitudinal direction on the flap portion in the crotch part, and when gathered, leg gathers are formed by the contraction force of the elastic members for forming leg gathers. The disposable diaper according to any one of <1> to <25>.
<27>
The disposable diaper according to any one of <1> to <26>, wherein the fastening tape extending outward in the width direction is attached to an outer side portion of the side panel.
<28>
The fastening tape is folded before use, and is unfolded and used during use.In the unfolded state, the fastening tape has a substantially trapezoidal shape with an upper bottom on the outer side in the width direction. The disposable diaper according to <27>, wherein the hook base material is fixed to the outer side in the width direction of the equally formed tape base sheet.

<29>
In the disposable diaper, the joining region for joining the fastening tape and the side panel is formed by an adhesive, and is joined through a plurality of fusion parts formed by heat sealing or ultrasonic sealing. The disposable diaper according to <27> or <28>.
<30>
The joining region has a fused portion group in which a plurality of small-shaped fused portions are regularly arranged in the longitudinal direction, and a plurality of the fused portion groups are arranged in the width direction. <29> described above, which 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 panel when the stretchable side panel in a natural state is viewed in plan Disposable diapers <31>
<29> or <30> The disposable diaper according to the above <29> or <30>, wherein the fused portion has a vertically long oval, circular, rhombus, triangular, or polygonal shape.
<32>
The disposable diaper according to any one of <29> to <31>, wherein a seal pattern area of the fused portion is 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 <29> to <32>, wherein an interval between the fusion parts adjacent in the longitudinal direction is 1 mm or more and 8 mm or less, preferably 6 mm or less.
<34>
The number of the fusion parts to be arranged is 1 / cm ² or more and 16 / cm ² or less, preferably 2 / cm ² or more and 10 / cm ² or less. The disposable diaper according to any one of <29> to <33>, wherein the ratio of the total seal pattern area of the fused portion is 10% to 70%, preferably 10% to 50%.
<35>
The elastic member in the stretchable side panel is elongated in a state of extending in the width direction so that the extending direction intersects the extending direction of the longitudinal edge of the side panel at the intersecting angle θ2. The crossing angles θ2 are 150 ° or more, preferably 160 ° or more, and the upper limit is less than 180 °, preferably 175 ° or less. 34> The disposable diaper any one of.
<36>
Regarding the elastic member constituting the stretchable side panel, the extension direction of a part of the plurality of elastic members intersects with the extension direction of the remaining elastic members of the plurality of elastic members. The extending direction of the first elastic member of the partial elastic member and the extending direction of the second elastic member of the remaining elastic member intersect at an intersection angle θ3 and are inclined in the width direction. <1> to <35, wherein the intersection angle 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>.
<37>
The disposable diaper according to any one of <1> to <36>, wherein a landing sheet for fastening the hook material of the fastening tape is provided on an outer surface of the abdomen side portion of the disposable diaper.
<38>
The side panel is fixed to any one of the above <1> to <37>, which is fixed to the non-skin facing surface of the back sheet so as to extend outward in the width direction from the side edge of the absorbent main body. The disposable diaper described.
<39>
Any of <1> to <38>, wherein the side panel is disposed and fixed between a side sheet and a back sheet disposed on the back side portion, or is fixed to a skin facing surface of the side sheet. The disposable diaper according to claim 1.
<40>
The disposable diaper according to any one of <1> to <39>, wherein the fastening tape is unevenly attached to an end of the stretchable side panel on the back side in the longitudinal direction.

DESCRIPTION OF SYMBOLS 1 Disposable diaper 2 Absorbent main body 2S Side part of absorbent main body 2S1 Side edge in side part of absorbent main body 21 Top sheet 22 Back sheet 23 Absorber 24 Side sheet 25 Elastic member for forming three-dimensional gathers 26 For forming leg gathers Elastic member 3 Stretchable side panel 3S Outer side part of stretchable side panel 3S1 Outer side edge of outer side part of stretchable side panel 31 Skin side sheet 31S Extension part 32 Non-skin side sheet 32S Extension Protruding portion 33 Elastic member 33I End portion on the absorbent main body 2 side (near the center line CL) 33O End portion on the outer side portion 3S side (X direction outer side) of the side panel 3 33c Arranged on the most crotch portion C side 33A First elastic member, 33B Second elastic member, 33D Third elastic member, 33E Fourth elastic member 35 Main body side adhesive layer 36 Outer side adhesive layer 3 Intermediate adhesive layer 38 unbonded regions 4 fastening tape 41 a tape substrate sheet 42 hook material 5 landing sheet 6 bonded areas 61 fused portion 62 adhesive

Claims (10)

It has a liquid-retaining absorbent body, a top sheet disposed on the skin-facing surface side of the absorbent body, and a back sheet disposed on the non-skin-facing surface side of the absorbent body, and is positioned on the wearer's stomach side when worn An absorptive absorbent main body that is divided into a ventral part, a dorsal part located on the dorsal side, and a crotch part arranged between the ventral part and the dorsal part,
Stretchable side panels extending outward in the width direction are attached to both side portions in the longitudinal direction of the absorbent main body, and the width direction outside of the lateral side portion of the side panel along the absorbent main body longitudinal direction is attached. A disposable diaper with a fastening tape extending toward the
In the stretched state, the side panel has both ends of the absorbent main body in the longitudinal direction extending in parallel with each other, two sheets, a plurality of elastic members extending in the width direction fixed between the two sheets, A main body side adhesive layer that extends in the longitudinal direction of the absorbent main body and is disposed on an end side of the plurality of elastic members on the absorbent main body side, on an end side of the elastic member on the outer side of the side panel An outer side adhesive layer extending in the longitudinal direction of the disposed absorbent body, and a plurality of intermediate adhesives extending in the longitudinal direction of the absorbent body disposed between the body side adhesive layer and the outer side adhesive layer The elastic member in an elongated state having a layer and arranged intermittently in the longitudinal direction of the absorbent main body is bonded between the two sheets with the main body side adhesive layer, the outer side adhesive layer, and the intermediate bond It is fixed through the agent layer,
The intermediate adhesive layer has an adhesive strength weaker than the adhesive strength of each of the main body side adhesive layer and the outer side adhesive layer,
Among the plurality of elastic members, the elastic member arranged at least on the crotch part side is such that one end portion of both end portions of the elastic member has the main body side adhesive layer and the outer side adhesive. And the other end is located in the main body side adhesive layer or the outer side adhesive layer,
Each of the plurality of elastic members has an extending direction intersecting an extending direction of an edge of the side panel in the longitudinal direction of the absorbent main body,
Several of the plurality of elastic members are extended from the elastic member disposed on the crotch part side at substantially equal intervals in the longitudinal direction of the absorbent main body from the elastic member disposed on the crotch part side. A portion which is fixed substantially parallel to the direction and whose both end portions extend beyond the main body side adhesive layer and the outer side adhesive layer and which exceeds the main body side adhesive layer And in the part beyond the outer side adhesive layer, it is in a non-stretchable state ,
In the extended state, both side edges of the side panel extending in the longitudinal direction of the absorbent main body extend in parallel to each other. The extending direction of the side edge of the side panel and the edge of the side panel in the longitudinal direction of the absorbent main body Disposable diapers that do not intersect at right angles with the extending direction of and are formed in a parallelogram .   In the stretched side panel, one end of both ends of the elastic member disposed on the most crotch part side is at the main body side at both side edges along the longitudinal direction of the absorbent main body in the stretched state. The disposable diaper of Claim 1 located between an adhesive bond layer and the said outer side adhesive bond layer.   The elastic member arranged at least on the crotch part side among the plurality of elastic members is such that one end of both ends of the elastic member completes the wearing state of the disposable diaper to the wearer. The disposable diaper according to claim 1 or 2, wherein the disposable diaper is located between the main body side adhesive layer and the outer side adhesive layer.   The disposable diaper according to any one of claims 1 to 3, wherein a width of the intermediate adhesive layer is narrower than a width of each of the main body side adhesive layer and the outer side adhesive layer.   The elastic member of a part of the plurality of elastic members has an end on the outer side portion side of the side panel overlapped with the outer adhesive layer or from the outer adhesive layer. The disposable diaper according to any one of claims 1 to 4, wherein the disposable diaper is fixed to the sheet constituting the side panel by a seal on the outer side in the width direction.   The elastic member arranged at least on the most crotch part side among the plurality of elastic members has an extension direction intersecting a width direction of the absorbent main body. The disposable diaper described.   The extension direction of a part of elastic members of the plurality of elastic members and the extension direction of the remaining elastic members of the plurality of elastic members intersect. The disposable diaper described in the item. The disposable diaper according to claim 7 , wherein the extending direction of the side edge of the side panel and the absorbent main body longitudinal direction of the absorbent main body intersect each other. The disposable diaper according to any one of claims 1 to 8 , wherein the other end portion of the elastic member disposed on the most crotch part side is located on the outer side adhesive layer. The disposable diaper according to any one of claims 1 to 9, wherein the side panel is attached to a back side portion of the absorbent main body.

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