JP2009279203A - Absorbent article and absorbent body holding cover - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an absorbent article which is flexible and excellently fitted to skin, and has high strength against separation or break, etc., between members, and to provide an absorbent body holding cover. <P>SOLUTION: The absorbent article includes: an external body with an outer layer sheet and an inner layer sheet, having a back side part to be arranged on the back side of a wearer when he/she wears, a belly side part to be arranged on the belly side, and a crotch part positioned between the back side part and the belly side part; and an absorbent body to be arranged on the wearer skin side from the belly side part to the back side part via the crotch part. The inner layer sheet and the outer layer sheet are intermittently joined in a length direction by a plurality of lines of first joint strings to be extended in a waistline direction concerning the flap part of the external body which is extended to the outer side of the belly or back side from the length direction end of the absorbent body. Elastic members are arranged at least partially between the respective strings of the plurality of lines of first joint strings. The flap part of the external body includes, on the front side, a reinforcing sheet which is joined via a plurality of lines of second joint strings to be extended in a direction being the same as that of the first joint part. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an absorbent article and an absorbent main body holding cover.

  In a diaper cover in which an absorbent article such as a disposable diaper or an absorbent pad is used on the skin surface side, gathers are widely formed to impart stretchability. This gather is composed of a large number of irregularly formed ridges formed by the sheet material refracted at the expansion and contraction part. Usually, the entire rubber thread is bonded to the sheet material in an expanded state, and the elastic member contracts to a natural shape. Is formed. The above-mentioned gathers are short and irregular in length perpendicular to the direction of expansion and contraction of the wrinkles, and are not very beautiful. Further, since the elastic member is fixed as a whole, the stretchability may not be sufficiently exhibited.

  In contrast, recently, an elastic composite sheet member has been developed that is configured such that an elastic body can expand and contract independently between the two sheets (see Patent Document 1, etc.). This creates a gather that is soft to the touch and beautiful to the eye. However, Patent Document 1 below discloses a tape-fastened diaper using a stretchable composite sheet member, but specifically discloses how the stretchable composite sheet is arranged and fixed as a diaper member. Not done.

  By the way, in a pants-type disposable diaper in which a body fit gather is formed around the wearer's lower abdomen, a laminate is disclosed in which the end of the absorbent body smaller than usual is covered with a nonwoven fabric or an apertured film. (See Patent Document 2). Thereby, it can hold down, without exposing an absorber edge part.

Japanese Patent Laid-Open No. 2005-080859 JP-A-8-280739

  A relatively strong force may act on the flap portion of the diaper when the diaper is put on or pulled up while wearing. In particular, the force applied to the flap part is remarkable when the caregiver puts the care pants on the care recipient who cannot move the body sufficiently, or when the guardian urges the infant to rush the pants-type diaper. .

  In view of the above, an object of the present invention is to provide an absorbent article and an absorbent main body holding cover that have excellent stretchability, excellent fit to skin, and high strength against peeling and breakage between members. .

  The above-described problems include a dorsal side portion disposed on the wearer's back side when worn, an abdominal side portion disposed on the ventral side, and a crotch portion positioned between the dorsal side portion and the ventral side portion. An absorbent article comprising an outer body having an outer layer sheet and an inner layer sheet, and an absorbent body disposed on the skin side of the wearer from the abdominal side to the back side via the crotch part, In the flap portion of the exterior body that extends outward from the end in the height direction of the absorbent body on the abdomen side or the back side, the inner layer sheet and the outer layer sheet have a plurality of first joint rows that extend in the waistline direction. The elastic member is disposed at least partly between each row of the first joint row of the plurality of strips, and the flap portion of the exterior body has the first side on the front side. Reinforcing sheets joined via a plurality of second joint rows extending in the same direction as the joints It was solved by the absorbent article which Bei.

  The absorbent article and the absorbent main body holding cover of the present invention have excellent stretchability, excellent fit to the skin, good comfort, and high strength against peeling and breakage between members. Has the function and effect. Moreover, the absorbent article and absorbent main body holding cover of the present invention can suitably cope with the above-described high strength by suppressing breakage and the like when worn by care recipients and infants.

Hereinafter, the absorbent article of this invention is demonstrated in detail, referring drawings for the preferable embodiment.
FIG. 1 is a perspective view schematically showing a pants-type diaper as an embodiment (embodiment 1) of the absorbent article of the present invention with a part cut away in a state when a care recipient wears it.
The diaper 10 of this Embodiment 1 is located between the back side part arrange | positioned at a wearer's back side at the time of wear, the abdominal side part distribute | arranged to the abdominal side, and this back side part and this abdominal side part. The outer side sheet 2 of the non-skin surface side and the inner layer sheet 1 of the skin side make up the crotch part, and the abdominal side part is formed through the crotch part on the skin side of the outer body. The absorber 8 arrange | positioned from the back side part is arrange | positioned. In the present specification, “skin surface side” and “non-skin surface side” refer to a surface relatively close to the wearer's skin and a surface far from the skin, respectively. A front / rear flap portion 6u is formed on a part of the exterior body on the outer side in the front-rear direction (hereinafter also referred to simply as “absorber front / rear”) in the height direction of the absorber. In the present invention, the “absorber” refers to an absorptive structure that can be separated from at least the front and rear flaps and may be continuous with or independent from the front and rear flaps. For example, it refers to an absorbent core itself containing a water-absorbing material such as an aggregate of hydrophilic fibers or a highly water-absorbing polymer, or a structure in which this is covered with hydrophilic fibers such as pulp, and at this time the liquid permeability constituting the flap portion This part is not included even if it is joined to the surface sheet or the liquid-impervious leak-proof sheet.

  In the diaper 10 according to the first embodiment, the outer layer sheet 2 and the inner layer sheet 1 extend in the waist direction in the front and rear flaps 6u, and are arranged in parallel to the height direction. 11 is intermittently joined to the height direction. A body elastic member 3 is disposed between each of the plurality of first joint rows. In other words, a plurality of the body elastic members 3 are arranged in parallel to the height direction extending in the waistline direction at positions that do not overlap the first joint row 11. Here, “the waistline direction” in the present invention refers to the circumferential direction formed by the edge of the waist opening t (see FIG. 1). 2 to 5 described later, this corresponds to the X direction. Further, in the present invention, the “length direction” refers to a direction from the waist opening end t of the flap portion 6u toward the crotch 15 when worn by the wearer, and a direction orthogonal to the waistline direction (FIG. 1). reference). As described above, in the diaper 10 according to the first embodiment, the elastic member 3 is disposed so as to avoid the first joint row 11 arranged in parallel with the height direction. The sheet and the inner layer sheet can be expanded and contracted independently.

  In the diaper 10 of the first embodiment, the reinforcing sheet 5 covers a plurality of first joint rows 11 arranged between the outer layer sheet 2 and the inner layer sheet 1 via the inner layer sheet 1. Are arranged as follows. Here, the reinforcing sheet 5 is “covered via the inner layer sheet 1” means that the entire range of the first joint row 11 and the elastic member 3 of the plurality of strips extending in the waistline direction and juxtaposed in the body height direction or constant. It covers covering the area and covering in a planar shape in plan view. In other words, in the first embodiment, the reinforcing sheet 5 is covered and disposed without avoiding the position where the elastic member 3 is disposed. Furthermore, in the diaper 10 of the first embodiment, the reinforcing sheet 5 and the inner layer sheet 1 extend in the same direction as the first joint portion and are arranged in parallel to the height direction at a position that does not overlap the elastic member 3. In addition, a plurality of second joint rows 12 are joined. That is, even if the reinforcing sheet 5 covers the position where the elastic member 3 is arranged, the reinforcing sheet 5 is not joined to the inner layer sheet 1 over the entire surface, and the reinforcing sheet 5 is arranged with the elastic member 3. In this position, the inner layer sheet 1 is not joined.

  The diaper 10 of this Embodiment 1 respond | corresponds to the position where the said elastic member 3 of the outer-layer sheet | seat 2, the inner-layer sheet | seat 1, and the reinforcement sheet | seat 5 which were overlap | superposed by the elastic member 3 shrink | contracting to a natural shape is arrange | positioned. A large number of heels are formed in the portion (however, the diaper 10 of the first embodiment shown in FIG. 1 shows a state worn by a care recipient, and thus the heel shows a state of being gently extended. ing.). Although the reinforcing sheet 5 may be superimposed on the non-skin surface side of the outer layer sheet 2, the reinforcing sheet 5 may be superimposed on the skin surface side of the inner layer sheet 1 from the viewpoint of forming a beautiful appearance. preferable.

  Further, the leg portion 15 of the exterior body 6 is a portion where the leg opening portion s is formed when the diaper shape is formed, and the leg elastic member 9 is arranged on this portion, and the wearer's thigh is appropriately tightened. To be fit.

FIG. 2 is a plan view of the diaper 10 shown in FIG. 1 expanded and a part of the abdominal side portion 14f and the crotch portion 15 being enlarged and seen from the skin surface side. In other words, what is shown in the figure shows a diaper material. Although not shown in FIG. 2, in the present embodiment, there is a dorsal side portion 14r having the same form as the ventral side portion 14 on the opposite side of the abdominal side portion 14f in the height direction (Y direction). A crotch portion 15 is disposed between the portion 14f and the back side portion 14r. The abdominal side portion 14f and the back side portion 14r extend outward in the width direction from the left and right end positions in the minimum width portion of the crotch 15, and have an hourglass shape as a whole of the exterior body 6. When this is assembled into the diaper shown in FIG. 1 (when the back side and the abdomen side are joined with a fastening tape in the case of a tape-type diaper), the abdomen side portion 14f and the back side portion 14r are integrated into the torso. The crotch part (leg part) 15 is arranged below the height direction of the part 14 (refer FIG. 1).
The body elastic member 3 and the leg elastic member 9 described above are arranged in an extended state on the outer body 6 having a substantially hourglass shape. At this time, in the first embodiment, the body elastic member 3 is fixed by the side seal portion 13 or the fixing portion 18. Except for these portions, the body elastic member 3 is not fixed to the inner layer sheet 1 and the outer layer sheet 2 and is disposed in the gap between the first joint rows 11 so as to be stretchable. Although such a joining form is ideal, it is allowed that a part of the trunk elastic member 3 is fixed at a place other than the inner layer sheet 1 or the outer layer sheet 2 and the side seal part or the fixing part 18. The 1st body junction part row | line | column 11 which joins the inner layer sheet | seat 1 and the outer layer sheet | seat 2 can be formed by heat embossing, for example. On the other hand, the entire leg elastic member 9 is sandwiched and fixed between the inner layer sheet 1 and the outer layer sheet 2. This diaper material is joined at the side seal part 13 and assembled into a pants-type diaper. At this time, the stretched body elastic member 3 and leg elastic member 9 are contracted into a natural shape, thereby forming a three-dimensional pant-type diaper 10 that is soft and rounded as a whole. And as a disposable diaper which has the waist opening part t and the leg opening part s shown in FIG. 1, it fits so that a wearer's torso and thigh may be tightened moderately at the time of wear.

  In the diaper 10 of the first embodiment, in the front and rear flaps 6u, the first joint row 11 that joins the outer layer sheet 2 and the inner layer sheet 1 has a width in the height direction and extends in a belt shape in the waist direction. Has been. Similarly, the second joint row 12 that joins the inner layer sheet 1 and the reinforcing sheet 5 has a width in the height direction and extends in a band shape in the waist direction. The two joining rows overlap with each other via the inner layer sheet 1. In the present invention, a predetermined structural part or member overlaps another structural part or member through a sheet means that each structural part is located on both sides with a predetermined sheet such as the outer layer sheet 2 or the inner layer sheet 1 interposed therebetween. It means that there is a member, and the structure portion or member has a portion overlapping when viewed in the thickness direction of the sheet. A part of each structure part or member may overlap, or all may overlap. Furthermore, in the diaper 10 of the first embodiment, the body elastic member 3 is interposed between the inner layer sheet 1 and the outer layer sheet 2 as described above, and includes the first joint portion row 11 that is a joint portion between both sheets. It is arranged to avoid. More specifically, the body elastic member 3 is elongated, extends in the body circumference direction at the body 14, and a plurality of the body elastic members 3 are arranged in parallel to each other in the longitudinal direction.

  The form of the trunk | drum elastic member 3 is not specifically limited, In addition to making it a long elastic member like what was illustrated, the short elastic member is intermittently connected continuously etc. are mentioned. When a short elastic member is intermittently provided, the elastic member 3 is joined to the outer layer sheet 2 or the inner layer sheet 1 at a part (for example, an end portion), but is not joined to any sheet in most part. It is preferable. Moreover, the shape of each sheet material in the front and rear flap portions 6u is not particularly limited, but preferably, the outer layer sheet 2 and the inner layer sheet 1 are substantially hourglass shapes, and the reinforcing sheet 5 is rectangular. The reinforcing sheet 5 is disposed on the trunk portion 14.

The reinforcing sheet 5 may be disposed on the entire waistline, but is not necessarily disposed on the entire waistline. For example, in the case where the diaper 10 of Embodiment 1 is deployed, when the torso portion 14 is divided into four parts in the width direction and the height direction, the reinforcing sheet 5 has two central areas in the width direction and the height direction, respectively. It is preferable to arrange in the position. Specifically, as shown in FIG. 2, in the developed diaper material, the region from the 1/4 line to the 3/4 line obtained by dividing the body part 14 into four parts in the waist direction (X direction), and the body part 14 are A rectangular region (in other words, auxiliary lines W _{1/4 to} W _3/4 and H _{1 in} FIG. 2) divided by a region from a 1/4 line to a 3/4 line divided into four in the height direction (Y direction). _{/ 4 to} H _3/4 , a rectangular region at the substantially center in the trunk portion 14. In the present invention, the reinforcing sheet 5 is referred to as "the ventral trunk central portion" or "the dorsal trunk central portion"). Is preferably arranged. In particular, it is preferable that one end portion of the reinforcing sheet 5 is located on the absorbent body and is joined to the absorbent body because it exhibits high strength against peeling or breakage between members during pulling. However, in consideration of the function of the reinforcing sheet 5, it may not be somewhat rectangular or may deviate from the auxiliary line. In FIG. 2, the front body (abdominal side) 14f is shown, but the ratio of dimensions (area distribution) is the same for the back body (back side) 14r. The reinforcing sheet 5 may be disposed on either the skin surface side of the inner layer sheet 1 or the non-skin surface side of the outer layer sheet 2 to reinforce the exterior body 6.

  In the diaper 10 of the first embodiment, as described above, the body elastic member 3 is disposed in a non-joined portion where the first joint row 11 is not disposed, and the inner layer sheet 1 and the outer layer sheet 2 Is in a state where it can expand and contract independently. Therefore, an excessive increase in rigidity can be prevented with respect to a normal gather obtained by integrally joining the sheet material and the elastic member, and flexible deformation of the heel is promoted with respect to an external force. Further, the volume is increased in the thickness direction of the sheet material, and the touch when touching the heel is soft and the touch is good.

In the diaper 10 of the first embodiment, the body elastic member 3 is not disposed in the region where the absorbent body 8 is provided, and the front and rear flap sections 6u on the front and rear outer sides of the body length direction end 8a of the absorbent body 8. The body elastic member 3 is disposed on the body.
A part of the body elastic member 3 may be disposed on left and right flap portions (not shown as regions) extending outward from the widthwise end 8b of the absorber. In the first embodiment, this portion of the body elastic member 3 is fixed by the fixing portion 18 and the side seal portion 13 so as not to overlap the absorber 8. Such a fixing portion 18 at the end of the elastic member can be formed, for example, by a method in which only the vicinity of the end of a short elastic member that does not cross the absorber is bonded with an adhesive such as hot melt. Alternatively, a treatment in which the elastic member does not substantially exhibit stretching stress in the region of the absorber 8, such as fixing the body elastic member 3 including the region where the absorber 8 is provided and then cutting the elastic member. You may give it. At that time, it is preferable that the body elastic member 3 is not fixed to the inner layer sheet 1 and the outer layer sheet 2 except for the side seal portion 13 and the fixing portion 18. As a result, the expansion and contraction inhibition caused by the body elastic member 3 being fixed to the two sheets is prevented, the fitting property and the slip-off preventing property are improved, and the absorbent body 8 exhibits good absorption performance regardless of wrinkles. it can.

The first embodiment will be described in more detail based on FIG.
3 is an enlarged cross-sectional view taken along the line III-III shown in FIG. The cross section shown in FIG. 3 is shown as a cross section that crosses the exterior body 6 in the body height direction (Y direction).
In this cross-sectional position, the first joint row 11 that joins the outer layer sheet 2 and the inner layer sheet 1 has a shape having a width in the Y direction. Moreover, the 2nd junction part row | line | column 12 which joins the inner layer sheet | seat 1 and the reinforcement sheet | seat 5 is also a shape which has a width | variety in a Y direction. The two joint rows overlap with each other via the inner layer sheet 1. The torso elastic member 3 is not fixed to the outer layer sheet 2 and the inner layer sheet 1 and is in a state where it can expand and contract independently of both sheets. In the outer front and rear flap portions 6u in the front and rear of the absorbent body 8, the trunk elastic members 3 and the first joint rows 11 are alternately arranged. The portions α corresponding to the trunk elastic members 3 and the first It is divided into a part β corresponding to the joint line 11. In addition, the 2nd junction part row | line | column 12 is arrange | positioned in this same site | part (beta) as the 1st junction part row | line | column 11 as above-mentioned. This section may be functional, and may be sectioned at or near the boundary line between the body elastic member 3 and the first joint row 11. For example, the part α can be determined in consideration of the function of maintaining the stretchability of the body elastic member 3, while the part β does not substantially affect the expansion and contraction of the body elastic member 3 and increases the strength of the exterior body. It can be determined in consideration of the function to be maintained. Further, at this cross-sectional position, the reinforcing sheet 5 is arranged so as to cover the portion α where the body elastic member 3 is interposed and the portion β where the first joint row 11 is disposed through the inner layer sheet 1 as described above. Is done. The reinforcing sheet 5 is joined to the inner layer sheet 1 at the second joining portion row 12, but is not joined to the inner layer sheet 1 at the portion α corresponding to the body elastic member 3. The elastic member 3 is covered via

  As described above, in the diaper 10 of the first embodiment, the first joint portion row 11 and the second joint portion row 12 are arranged so as to avoid the elastic member 3, thereby maintaining good stretchability of the elastic member 3. Is done. Moreover, the first joint row 11 and the second joint row 12 extend in the waistline direction, and in addition, the second joint row 12 is juxtaposed at a predetermined interval with respect to the height direction, so that the diaper 10 at the time of wearing is attached. Since the front and rear flap portions 6u are supported by the surface in the waistline direction against the tensile force in the height direction, the tensile strength of the front and rear flap portions 6u can be improved compared to the case where the joint portion extends in the height direction. . In particular, the strength is preferably strong enough to resist the strong tensile force and piercing force applied to the flap portion when the caregiver puts the care pants on the care recipient who cannot move his / her body sufficiently. On the other hand, other than both end portions of the body elastic member 3, since it is stretchable without being constrained by the exterior body 6 at the part α, its stretchability is maintained without being impaired, and a good fit of the diaper is realized. Is done. Furthermore, in the diaper 10 of the first embodiment, the first joint portion row 11 extends around the waist, and therefore, unlike the case where the joint row extends in the body height direction, the portion α is easily and sufficiently secured. In addition, the joint width of the first joint section row 11 can be set narrower, and the distance between the body elastic members 3 can be further shortened accordingly. As a result, the outer layer sheet 2, the inner layer sheet 1 and the reinforcing sheet 5 in the periphery of the part α are formed with more delicate shearing under the influence of the elastic force of the body elastic member 3, and are elegant and beautiful peculiar to the flap 6u. A beautiful appearance is born. Moreover, in the diaper 10 of this Embodiment 1, since this aesthetic appearance appears in the non-skin-surface side surface of the exterior body 6, the reinforcement sheet 5 is arrange | positioned by arrange | positioning the reinforcement sheet 5 in the skin surface side of the exterior body 6. It is preferable in that it does not affect the appearance when wearing a diaper and maintains a unique and elegant aesthetic appearance formed by a large number of heels.

  In the diaper 10 of the first embodiment, one end portion of the reinforcing sheet 5 is disposed not only on the front and rear flap portions 6u but also on the skin surface side of the front and rear ends of the absorbent body 8 so as to cover a part thereof. By doing in this way, when the absorber 8 absorbs and holds a liquid etc., it is preferable at the point which can suppress effectively the leakage to the front-back direction (Y direction) of this liquid. Further, by joining one end portion of the reinforcing sheet 5 to the skin surface side of the end portions before and after the absorber 8 with an adhesive or the like, peeling of the inner layer sheet 1 and the reinforcing sheet 5 due to a pulling operation at the time of wearing is suppressed. The tensile strength can be greatly improved. In order to effectively express the two effects, it is preferable that one end portion of the reinforcing sheet 5 is bonded to the skin surface side of the end portions before and after the absorber 8 with an adhesive continuous in the waistline direction. Moreover, in the exterior body 6 of the part where the absorbent body 8 according to the first embodiment is arranged, a surface joint portion 19 is formed in which the inner layer sheet 1 and the outer layer sheet 2 are bonded by spiral spray, fiber spray, or the like. .

  Nonwoven fabrics that are used as the material for the inner layer sheet 1 and the outer layer sheet 2 are nonwoven fabrics, woven fabrics, knitted fabrics, resins, and the like produced by various manufacturing methods such as air-through nonwoven fabric, heat roll nonwoven fabric, spunlace nonwoven fabric, spunbond nonwoven fabric, and meltblown nonwoven fabric, respectively. A film etc. are mentioned, The sheet | seat material etc. which these are laminated and integrated can be used. From the viewpoint of regularly arranging flexible ridges with good feel and giving a decorative aesthetic appearance, both sheet materials or one sheet material (especially skin when used for the purpose of bringing a composite elastic member into contact with the skin) The forming material of the sheet material forming the side surface is preferably an air-through nonwoven fabric, a heat roll nonwoven fabric, a spunlace nonwoven fabric, a spunbond nonwoven fabric, a melt blown nonwoven fabric, or the like.

  The first joint row 11 and the second joint row 12 may be formed by any method, but the first joint row 11 is formed by heat fusion (heat embossing) from the viewpoint of texture. Preferably, the second joint row 12 is preferably formed of an adhesive (preferably a hot-melt adhesive) from the viewpoint of strength. As the adhesive coating pattern, generally known patterns such as a linear shape, a corrugated shape, and a spiral shape can be used, but a linear shape is preferable from the viewpoint of strength. Further, from the viewpoint of preventing the reinforcement sheet from peeling due to friction when the diaper 10 is pulled up in the height direction, it is preferable that the bonding strength of the second bonding portion row 12 is higher than that of the first bonding portion row 11.

  The nonwoven fabric used as the material of the reinforcing sheet 5 is a core-sheath type made of a resin such as polyethylene or polypropylene, or the surface is made of the resin, from the viewpoints of strength, heat-fusibility, and leak-proof (hydrophobic) properties. A spunbond nonwoven is preferred. From the viewpoint of heat-fusibility, the reinforcing sheet 5 and the inner layer sheet 1 are preferably made of a non-woven fabric having the same composition (for example, both the sheets are spunbond non-woven fabrics made of PET / PE composite fibers). More preferably, all of the outer layer sheets 2 are made of a nonwoven fabric having the same composition (for example, the three sheets are spunbond nonwoven fabrics made of PET / PE composite fibers, or only the outer layer sheet 2 is an air-through nonwoven fabric).

  As a material of the elastic member 3, a normal elastic material used for an absorbent article can be used. For example, as a material, synthetic rubber such as styrene-butadiene, butadiene, isoprene, neoprene, natural rubber, EVA, stretchability Polyolefin, polyurethane, etc. can be mentioned, and the form is a cross-sectionally rectangular, square, circular, polygonal or other thread-like or string-like (flat rubber etc.) or multifilament type thread-like one Can do.

  The inner layer sheet 1 and the outer layer sheet 2 are not limited to those constituted by two separate sheets as in the first embodiment, but one sheet material is folded to form two opposing surfaces, The portion constituting the surface can be the outer layer sheet, and the portion constituting the other surface can be the inner layer sheet. Moreover, you may provide a functional member and a structure part suitably between the inner layer sheet | seat 1 and the outer layer sheet | seat 2, and / or between both.

  In the first embodiment, the length (width) in the height direction of each first joint row 11 is preferably 0.5 to 5.0 mm, and more preferably 1.0 to 3.0 mm. Moreover, in this Embodiment 1, it is preferable that the length (width | variety) of the height direction of each 2nd junction part row | line | column 12 is 1.0-10.0 mm, and it is more preferable that it is 1.5-5.0 mm. preferable.

As another embodiment (Embodiment 2) of the present invention, although not shown, the length (width) in the height direction of the first joint row 11 in Embodiment 1 shown in FIG. One that is shorter (narrower) than the length (width) in the height direction.
In the second embodiment, the length (width) of the first joint row 11 in the height direction is shorter (narrower) than that of the second joint row 12, so that even if the distance between the elastic members is short, A portion α (see FIG. 3) between the one joint portions can be more easily ensured, the inhibition of expansion / contraction of the elastic member 3 can be reduced, and the stretchability can be improved. On the other hand, since the second joint portion row 12 for joining the inner layer sheet 2 and the reinforcing sheet 5 is disposed in a range beyond the position corresponding to the first joint portion row 11, the joint portions are disposed in the inner layer sheet 1. Are integrated with each other. Therefore, combined with the fact that the two joint rows that are integrated are arranged so as to extend in the waistline direction, high tensile strength at the time of lifting is realized.

FIG. 4 is a cross-sectional view of a diaper 20 as another embodiment (Embodiment 3) of the present invention, in which the torso 14 is further cut in the body height direction from the developed state. That is, FIG. 4 is a diagram showing another embodiment of the first joint row 11 of the part β, corresponding to the embodiment 1 shown in FIG.
In the diaper 20 of Embodiment 3, the first joint portion row 11 that joins the outer layer sheet 2 and the inner layer sheet 1 includes two joint portion rows 11a and 11b. Specifically, in the joint surface extending in the body height direction of the part β sandwiched between the two parts α where the elastic member 3 is arranged, in the vicinity of the part α having the elastic member from the center point toward both ends. The joint rows 11a and 11b are arranged, and a space region 25 exists between the joint rows 11a and 11b. The joint row 11a, 11b located in the vicinity of the elastic member 3 functions to more effectively control the displacement of the elastic member 3 at the site α. Moreover, the 2nd junction part row | line | column 12 which joins the inner layer sheet | seat 1 and the reinforcement sheet | seat 5 is all the range of the junction part row | line | columns 11a and 11b which comprise the 1st junction part row | line | column 11 via the inner layer sheet 1, and the space area | region 25. Further, the first joint row 11 is reinforced to realize a high tensile strength at the time of lifting. Furthermore, in the diaper 20 of the third embodiment, the first joining portion row 11 has the actual joining width in the height direction of the joining portion rows 11a and 11b. The joining area of the outer layer sheet 2 and the inner layer sheet 1 can be reduced while maintaining the prevention function. Thereby, for the outer layer sheet 2 and the inner layer sheet 1 joined in the first joining section row 11, the stiffening of the sheet material which becomes a stretch inhibiting factor of the elastic member 3 is reduced, and flexibility is maintained. Thereby, good stretchability of the elastic member 3 is realized.

  FIG. 5 is a partial plan view schematically showing a diaper 30 as another embodiment (Embodiment 4) of the present invention when viewed from the skin surface side in an unfolded state. That is, it is the figure shown as another embodiment about the upper right part of FIG. In the fourth embodiment, the first joint portion 21 that joins the outer layer sheet 2 and the inner layer sheet 1 and the second joint portion 22 that joins the inner layer sheet 1 and the reinforcing sheet 5 are intermittently arranged in the waist direction. A first joint row 11 and a second joint row 12 are formed. This is different from the case where the joint row of other embodiments extends continuously. Both the joints are laminated through the inner layer sheet 1 to improve the uniformity, and a ridge having a regular and soft elastic elasticity is formed, and a high strength at the time of lifting is realized. Moreover, the gather structure which has the cylindrical hole structure in which the elastic member 3 can be expanded-contracted independently of the said sheet | seat material by the intermittent arrangement | positioning of the height direction of both the said connection part row | line | column. The composite sheet having an air gather structure composed of the two-layer sheet material and the elastic member is described in detail in Japanese Patent Application Laid-Open No. 2005-80859, and Japanese Patent Application No. 2006-338242 for a pants-type diaper using the composite sheet. It is described in the specification and Japanese Patent Application No. 2006-35555.

  In the diaper 30 of the fourth embodiment, the stacked joint portions 21 and 22 can be arranged in an orthogonal lattice shape or a staggered lattice shape. In the present invention, the term “orthogonal lattice-like arrangement” means that the pitches of the two joints stacked in the plurality of joint rows 11 and 12 are substantially the same. In other words, when the joints 21 and 22 are projected in a direction orthogonal to the joint rows 11 and 12, the projected images of the joints overlap at substantially the same position. That means. On the other hand, the staggered arrangement means an arrangement in which the two junctions stacked in the plurality of junction rows 11 and 12 are shifted in pitch. Here, the arrangement in which the pitches of the joints are shifted is, in other words, when the joints 21 and 22 in each row are projected in a direction orthogonal to the joint rows 11 and 12, the projection image of each joint is obtained. It is preferable that the dispositions do not coincide with each other, and the projected images thereof substantially coincide with every other row of the joint portion rows, and it is more preferable that the adjacent joint portion rows are shifted by approximately a half pitch. In the arrangement of the orthogonal lattice and the staggered lattice, there may be a portion where the joint portions 21 and 22 are not appropriately provided in consideration of the function of the absorbent article.

  As another embodiment of the present invention, it is located between the dorsal side disposed on the wearer's dorsal side during wear, the ventral side disposed on the ventral side, and the dorsal side and the ventral side portion. An absorption body comprising an outer layer sheet on the non-skin surface side and an inner layer sheet on the skin surface side forming a crotch portion is disposed on the skin surface side from the abdominal side portion to the back side portion via the crotch portion. When worn in combination with the main body, the inner layer sheet and the outer layer sheet are arranged in the waist direction in the flap portion of the exterior body that extends outward from the end in the height direction of the absorbent main body on the abdomen or back side. The plurality of first joint rows extending in a row are intermittently joined in the height direction, and an elastic member is disposed at least partly between each row of the plurality of first joint rows, The flap portion of the body has a plurality of second joint portions extending on the front side in the same direction as the first joint portion. It includes absorbent body holding cover having a reinforcing sheet that is bonded via the. This absorptive main body holding cover is shared with the diapers of the first to fifth embodiments in that a reinforcing sheet is provided on the abdomen or back side flap as described above. Moreover, it is preferably shared with the diaper of Embodiment 5 in that the portion has a reinforced air gather structure. That is, the absorbent main body holding cover of the present embodiment can be described as a form in which the absorbent body is removed from the diaper of the first to fifth embodiments.

  The absorbent main body holding cover of the present embodiment is used with the absorbent main body arranged on the skin surface side. The absorbent main body is not particularly limited as long as it absorbs excreted urine and the like, and examples thereof include an absorbent pad such as a urine collecting pad. The absorbent pad includes, for example, a liquid-permeable surface sheet, a liquid-impermeable leak-proof sheet, and a liquid-holding absorber interposed between the two sheets, and is formed in a vertically long shape that is rectangular in plan view. Can be mentioned. A pair of left and right solid guards are preferably formed on both sides of the absorbent pad in the height direction, and each solid guard is for forming a solid guard having a solid guard elastic member on both sides of the absorbent pad in the height direction. It is preferable that the sheet material is disposed. The length of the absorbent pad is passed from the wearer's back side to the abdomen side, and the liquid-permeable sheet side of the pad is placed in contact with the wearer's skin, and this is carried out to cover this It is preferable to wear an absorbent main body holding cover of the form. At this time, the absorptive main body holding cover of the present embodiment may be a tape stop type or a pants type.

  The absorbent article and absorbent main body holding cover of the present invention may be for infants or for adults. Among these, an adult diaper is preferable from the viewpoint of the strength of the diaper. In addition, the absorbent article and the absorbent main body holding cover of the present invention may be, for example, a shorts-type napkin, a pants-type disposable diaper, or a tape-type disposable diaper, or a sanitary short, an incontinence pant, a diaper cover, etc. Good.

It is a perspective view showing a pants type disposable diaper as one embodiment (this embodiment 1) of an absorptive article of the present invention partially notching. It is the top view which expanded the diaper shown in FIG. 1, expanded the front body part, and was seen from the skin surface side. It is sectional drawing which expands and shows the III-III line cross section shown in FIG. It is sectional drawing which made the diaper as another embodiment (Embodiment 3) of this invention into the expansion | deployment state, and also cut | disconnected the trunk | drum 14 in the height direction. It is the partial top view which looked at the diaper as another embodiment (Embodiment 4) of this invention from the skin surface side in the expansion | deployment state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Inner layer sheet 2 Outer layer sheet 3 Trunk part elastic member 5 Reinforcement sheet 6 Exterior body 6t Waist opening edge 6u Front and rear flap part 8 Absorber 8a Absorber body length direction end 8b Absorber width direction end 9 Leg elastic member 10, 20, 30 Pants-type disposable diapers 11 First joint row 11a, 11b Joint portion row 12 Second joint row 13 Side seal portion 14 Body 14f Abdominal side portion 14r Back side portion 15 Leg portion (inseam)
17 Opening end 18 Fixing part 19 of elastic member end part Surface joining part 21 First joining part 22 Second joining part 25 Spatial region

Claims (7)

Outer layer sheet and inner layer forming a dorsal side portion arranged on the wearer's back side when worn, an abdominal side portion arranged on the ventral side, and a crotch portion located between the dorsal side portion and the ventral side portion An absorbent article comprising an outer body having a sheet, and an absorbent body disposed on the wearer's skin side from the abdomen to the back via the crotch,
In the flap portion of the exterior body that extends outward from the end in the height direction of the absorbent body on the abdomen side or the back side, the inner layer sheet and the outer layer sheet have a plurality of first joint rows that extend in the waistline direction. The elastic member is disposed at least partly between each row of the first joint row of the plurality of strips, and the flap portion of the exterior body has the first side on the front side. An absorbent article comprising a reinforcing sheet joined via a plurality of second joining part rows extending in the same direction as the joining part.   The absorptive article according to claim 1 arranged so that said 2nd joined part sequence may not overlap said elastic member and the section direction of said exterior body.   The absorbent article according to claim 1 or 2, wherein the width of the first joint row is narrower than the width of the second joint row, and the joint rows are overlapped in the cross-section direction of the exterior body. .   Among the plurality of first joint row, at least a part of the first joint row forms a plurality of rows between the elastic members, and the first joint row in the flap portion of the exterior body. The absorbent article according to any one of claims 1 to 3, wherein the total number of rows is greater than the total number of rows of the second joint rows.   The first joint portion row and the second joint portion row are each composed of a plurality of rows of first joint portions and second joint portions that are intermittently arranged in the waistline direction of the flap portion, and the first joint portion and The absorptive article given in any 1 paragraph of Claims 1-4 which exists in a position where the 2nd joined part overlaps in said exterior sheet cross section direction.   The absorbent article according to any one of claims 1 to 5, wherein the first joint row is formed by heat fusion, and the second joint row is formed by an adhesive.   Outer layer sheet and inner layer forming a dorsal side portion arranged on the wearer's back side when worn, an abdominal side portion arranged on the ventral side, and a crotch portion located between the dorsal side portion and the ventral side portion When the exterior body having a sheet is worn in combination with the absorbent main body arranged from the abdominal side to the back side via the crotch part on the wearer's skin side, the height of the absorbent main body In the flap portion of the exterior body that extends outward from the direction end to the ventral side or the back side, the inner layer sheet and the outer layer sheet are intermittent with respect to the height direction by a plurality of first joint rows extending in the waistline direction. The elastic member is arranged at least in a part between the first joint row of the plurality of strips, and the flap portion of the exterior body extends on the front side in the same direction as the first joint portion. Suction comprising a reinforcing sheet joined via a plurality of second joint rows. Sex body holding cover.

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