JP2011251045A - Disposable diaper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent leakage of excrement to outside from the leg parts of a disposal diaper even when the excrement leaks from the absorber of the disposal diaper.SOLUTION: An external sheet 4 of a pants type disposable diaper 1 includes: a front part 401 for covering the front side of a wearer; a back part 403 for covering the back side; and a middle part 402 arranged between both parts. The absorber 20 is attached to the external sheet 4 and absorbs the excrement from the wearer. Leg elastic members 43 are arranged along the side end edges of the middle part 402, so that the leg gathers are formed. Auxiliary elastic members 45 in a stretched state are joined to the external sheet 4 from the respective side ends of the middle part 402 toward the absorber 20 and also the upper ends of the diaper. Pockets 47 are formed on the respective sides of the absorber 20. Auxiliary absorbent parts 61 are arranged inside the pockets 47. Consequently, the leakage of the excrement to outside from the legs parts is prevented even when the excrement leaks from the absorber 20.

Description

  The present invention relates to a pants-type disposable diaper.

  Conventionally, a pants-type disposable diaper having a trunk opening at the upper end and a pair of leg openings at the lower part has been used as one of the absorbent articles that receive excrement from the wearer. In such a disposable diaper, in the exterior sheet in which the front part covering the front side of the wearer and the rear part covering the rear side are continuous via the intermediate part, both side ends of the front part are respectively joined to both side ends of the rear part. Thus, a trunk opening and a pair of leg openings are formed. Moreover, the absorber which absorbs excrement from a wearer is attached on an exterior sheet ranging from a front part to a back part. Furthermore, a pair of leg-holes elastic members are joined on the exterior sheet along the edges on both side edges of the intermediate portion, and the leg-hole elastic members contract to form a leg-hole gather.

  In Patent Document 1, in the front body (front part) of a pants-type disposable diaper, both ends are elastic elastic members positioned on both side ends of the front body, the center is inflated to the crotch side, and the center is absorbed Disclosed is a technique for preventing urine or stool leakage from the abdominal side by lifting the absorber to the front body edge (the edge of the trunk opening) side by disposing the body so as to intersect with the body disposition position. . Moreover, in patent document 2, in each of a front body and a back body, the 1st elastic member for mounting | wearing arrange | positioned with the waist opening part edge (edge of trunk | drum opening) as a start end, and the joint edge part of both sides ends as a termination | terminus, By providing a second elastic member for wearing arranged with the waist opening edge as the starting end and the leg opening edge (edge of the leg opening) as the terminal, the wearer grasps the waist opening and moves upward A disposable diaper that can easily pull up the diaper by the elastic force of the mounting elastic member when the diaper is pulled up is disclosed.

  In Patent Document 3, in an open-type disposable diaper in which a front part and a rear part are fastened around and attached to a waist part, a body gather disposed between a waist part elastic member and an end part of an absorber. The plurality of body elastic members for forming are arranged in a curved manner so that the interval between the respective body elastic members is the narrowest at a substantially central portion in the length direction, and are provided more than the absorber. Further, there is disclosed a structure in which both end portions of the body elastic member are positioned on the side of the absorber.

Japanese Patent Laid-Open No. 10-127687 JP 2006-263346 A JP-A-10-179634

  By the way, in order to absorb excrement appropriately in the absorber, it is preferable that the absorber is in close contact with the wearer's crotch. However, in the wearing of a pants-type disposable diaper, it is not easy to make the absorbent body closely contact the wearer's crotch, and if the excrement leaks from the absorbent body, the excrement is not provided even if the legs are gathered. Leakage may occur from around the legs.

  The present invention has been made in view of the above problems, and an object of the present invention is to prevent the excrement from leaking out from around the legs even when the excrement leaks out from the absorber.

  The invention according to claim 1 is a pants-type disposable diaper having a trunk opening at the upper end and a pair of leg openings at the lower end, and a front part covering the front side of the wearer and a rear part covering the rear side Bending at the intermediate part between the two parts, both side ends of the front part are respectively joined to both side ends of the rear part, thereby forming a trunk opening at the upper end of the front part and the rear part, An exterior sheet in which a pair of leg openings are formed on both sides of the intermediate part below the front part and the rear part, and an absorbent body that is attached on the exterior sheet and absorbs excrement from the wearer A pair of leg-around elastic members which are joined to the exterior sheet in a stretched state along the edges of both side edges of the intermediate part and contract to form a leg-around gather, and the front part side of the intermediate part Or part on the rear side A pair of auxiliary elastic members joined in an extended state on the exterior sheet so as to go from the both side ends toward the absorber side and the upper end side, and the pair of auxiliary elastic members on both sides of the absorber. A pair of pocket portions are formed in a region of the inner surface of the exterior sheet surrounded by the member, the pair of leg-around elastic members, and the absorber, and a pair of auxiliary absorption portions disposed in the pair of pocket portions.

  Invention of Claim 2 is the disposable diaper of Claim 1, Comprising: While a pair of auxiliary absorption part has both ends located in the pair of pocket parts, a center part is the absorber and the said It is the said both ends of one member arrange | positioned between exterior sheets.

  Invention of Claim 3 is a disposable diaper of Claim 1 or 2, Comprising: A pair of said auxiliary | assistant elastic member curves so that it may become convex on the said upper end side, and is joined on the said exterior sheet | seat. The

  Invention of Claim 4 is a disposable diaper in any one of Claim 1 thru | or 3, Comprising: The edge part by the side of the said absorber of a pair of said auxiliary | assistant elastic member overlaps with the said absorber.

  Invention of Claim 5 is a disposable diaper in any one of Claim 1 thru | or 4, Comprising: A pair of other auxiliary elastic members similar to said pair of auxiliary elastic members, and said pair of auxiliary absorption part And a pair of auxiliary absorbent parts similar to the above, wherein the pair of pocket parts are formed on both sides of the front part side part of the absorber, and both sides of the rear part side part of the absorbent body A pair of other pocket portions is formed on the other side, and the other pair of auxiliary absorption portions are disposed in the other pair of pocket portions.

  The invention according to claim 6 is a pants-type disposable diaper having a trunk opening at the upper end and a pair of leg openings at the lower end, and a front part covering the front side of the wearer and a rear part covering the rear side Bending at the intermediate part between the two parts, both side ends of the front part are respectively joined to both side ends of the rear part, thereby forming a trunk opening at the upper end of the front part and the rear part, An exterior sheet in which a pair of leg openings are formed on both sides of the intermediate part below the front part and the rear part, and an absorbent body that is attached on the exterior sheet and absorbs excrement from the wearer A pair of leg-around elastic members which are joined to the exterior sheet in a stretched state along the edges of both side edges of the intermediate part and contract to form a leg-around gather, and the front part side of the intermediate part Or part on the rear side A pair of auxiliary elastic members joined in an extended state on the exterior sheet so as to go from the both side ends toward the absorber side and the upper end side, A pair of front elastic portions and a pair of rear elastic portions which are portions on the rear portion side, and the pair of front elastic portions and the pair of rear elastic portions on both sides of the intermediate portion. A region where no elastic member around the leg is provided, and the pair of auxiliary elastic members, the pair of front elastic members adjacent to or in contact with the pair of auxiliary elastic members on both sides of the absorber, or A pair of pocket portions are formed in a region of the inner surface of the exterior sheet surrounded by the pair of rear elastic portions and the absorber.

  A seventh aspect of the present invention is the disposable diaper according to the sixth aspect, wherein the pair of auxiliary elastic members are curved and joined so as to protrude toward the upper end side.

  ADVANTAGE OF THE INVENTION According to this invention, even when excrement leaks from an absorber, it can prevent leaking outside from the leg periphery.

  In the invention of claim 2, the number of parts of the disposable diaper can be reduced. In the inventions of claims 3 and 7, a large pocket portion can be formed. It is possible to further prevent leakage from around the legs to the outside.

  Moreover, in invention of Claim 6, by restrict | limiting arrangement | positioning of a pocket part, in the state in which excrement was captured in the pocket part, it prevents that a wearer's walk operation | movement is disturbed too much by presence of a pocket part. can do.

It is a perspective view which shows the external appearance of a disposable diaper. It is a top view of the disposable diaper of the unfolded state. It is sectional drawing of a disposable diaper. It is a top view of other examples of a disposable diaper. It is a top view of other examples of a disposable diaper.

  FIG. 1 is a perspective view showing an appearance of a disposable diaper 1 according to an embodiment of the present invention. As shown in FIG. 1, the disposable diaper 1 is a pants type having a trunk opening 11 at the upper end, which is the upper end in FIG. 1, and a pair of leg openings 12 in the lower part. Receive excrement. In addition, the up-down direction of FIG. 1 is not necessarily a gravity direction.

  FIG. 2 is a plan view of the disposable diaper 1 as seen from the wearer side in a developed state. As shown in FIG. 2, the disposable diaper 1 is a substantially sheet-like absorbent body that is mounted on the outer sheet 4 and the inner surface of the outer sheet 4 (that is, the surface on the wearer side) and absorbs excrement from the wearer. 20 and two sheet members 5 (also referred to as end sheets or end press sheets) joined on the exterior sheet 4 so as to cover both ends of the absorbent body 20 in the longitudinal direction (that is, the vertical direction in FIG. 2). ). Each sheet member 5 is provided over substantially the entire width of the exterior sheet 4 in the lateral direction of FIG. Hereinafter, the horizontal direction in FIG. 2 is referred to as a “diaper width direction”.

  In the disposable diaper 1, the upper part in FIG. 2 covers the wearer's front side (abdominal skin), and the lower part in FIG. 2 covers the wearer's rear side (skin on the back side). In the following description, the portions covering the front side and the rear side of the wearer are referred to as “front portion 401” and “rear portion 403”, respectively, and are continuous from both sides between the front portion 401 and the rear portion 403 and are worn by the wearer. A portion facing the crotch portion is referred to as an “intermediate portion 402”.

  When the disposable diaper 1 is manufactured, the exterior sheet 4 is bent together with the absorbent body 20 at the intermediate portion 402, and the left and right ends of the front portion 401 when the intermediate portion 402 is disposed on the lower side, and the rear The left and right ends of the part 403 are joined by heat fusion by heating and pressing. In this way, by joining the both side ends of the front portion 401 and the both side ends of the rear portion 403, as shown in FIG. 1, the trunk opening 11 is formed at the upper ends of the front portion 401 and the rear portion 403, A pair of leg openings 12 are formed on both sides of the intermediate portion 402 below the front portion 401 and the rear portion 403.

  FIG. 3 is a cross-sectional view of the disposable diaper 1 cut at the position AA shown in FIG. 2 (that is, the intermediate portion 402). In FIG. 3, the structure of the disposable diaper 1 is drawn away from each other for convenience of illustration.

  As shown in FIG. 2 and FIG. 3, the absorbent body 20 is disposed on the substantially sheet-like main body 2 and on both sides of the main body 2 (that is, both ends in the width direction of the diaper). A pair of side seats 3 is provided over substantially the entire length in the longitudinal direction. As shown in FIG. 3, the main body 2 includes a top sheet 21, a back sheet 23, and an absorbent core 22 disposed between the top sheet 21 and the back sheet 23. In FIG. 2, the outline of the absorbent core 22 is drawn with a thick broken line for easy understanding of the drawing. As shown in FIG. 2, the width at both longitudinal ends of the absorbent core 22 is larger than the width at the central portion of the absorbent core 22 in the longitudinal direction. In other words, the absorption core 22 has a so-called hourglass shape.

  3 is bonded onto the exterior sheet 4 by a hot melt adhesive or the like, and the absorbent body 20 is fixed to the exterior sheet 4. In the disposable diaper 1 of FIG. 2, the absorber 20 is arrange | positioned ranging from the front part 401 to the back part 403, and each edge part of the absorber 20 is pinched | interposed between the sheet | seat member 5 and the exterior sheet | seat 4, The absorber 20 is firmly fixed on the exterior sheet 4.

  As shown in FIG. 3, each side seat 3 has a belt-like joint 33 that is a part on the main body 2 side and a second part with a fold line 39 provided over the entire length in the longitudinal direction as a boundary. A side wall 34 is provided. The joining portion 33 is joined to the upper side (that is, the wearer side) of the main body portion 2 using a hot melt adhesive over substantially the entire length in the longitudinal direction in the vicinity of the side edge of the main body portion 2.

  The side wall part 34 which continues from the joint part 33 via the fold line 39 is overlapped on the joint part 33 at both ends in the longitudinal direction, and is fixed on the joint part 33 by heat fusion bonding or ultrasonic bonding. In FIG. 2, in order to facilitate understanding of the drawing, a parallel oblique line is given to a portion 341 of the side wall portion 34 fixed on the joint portion 33. Moreover, the side wall part 34 is provided with the standing part 342 which stands up from the main-body part 2 in the center in a longitudinal direction, as shown in FIG.2 and FIG.3. As shown in FIG. 3, in the side wall portion 34, the elastic member 35 is joined to the free end of the upright portion 342, and the elastic member 35 contracts to form a gather in the upright portion 342.

  The top sheet 21 is a liquid-permeable sheet material, for example, a non-woven fabric formed of hydrophilic fibers, and quickly captures moisture of excrement from the wearer and moves it to the absorbent core 22. Nonwoven fabrics used as the top sheet 21 are, for example, point bond nonwoven fabrics, air-through nonwoven fabrics, and spunlace nonwoven fabrics. As hydrophilic fibers forming these nonwoven fabrics, cellulose, rayon, cotton, or the like is usually used. In addition, as the top sheet 21, a liquid-permeable nonwoven fabric formed of hydrophobic fibers (for example, polypropylene, polyethylene, polyester, polyamide, nylon) whose surfaces are hydrophilically treated with a surfactant may be used.

  The absorbent core 22 is made by mixing a hydrophilic fiber such as pulverized pulp fiber or cellulose fiber with a superabsorbent polymer (SAP (Super Absorbent Polymer)) or a superabsorbent material such as a superabsorbent fiber. It is formed by wrapping with a liquid-permeable nonwoven fabric or the like, and absorbs moisture that has passed through the top sheet 21 and quickly fixes it. Tissue paper, liquid-permeable nonwoven fabric, etc. that wraps hydrophilic fibers are joined to the hydrophilic fibers and water-absorbing material with a hot-melt adhesive, and the shape of the hydrophilic fibers is lost. Prevent later dropout). In the present embodiment, the absorbent core 22 includes pulp fibers and SAP.

  As the back sheet 23, a water-repellent or liquid-impervious nonwoven fabric (for example, a spunbond nonwoven fabric, a meltblown nonwoven fabric, an SMS (spunbond / meltblown / spunbond) nonwoven fabric) formed of hydrophobic fibers, A liquid-impervious plastic film is used to prevent excretion from reaching the back sheet 23 from exuding to the outside of the main body 2. When a plastic film is used for the back sheet 23, a plastic film having moisture permeability (breathability) may be used from the viewpoint of preventing the disposable diaper 1 from being stuffy and improving the wearer's comfort. preferable.

  As the sheet body of the side sheet 3, a water-repellent or liquid-impervious nonwoven fabric (for example, a spunbond nonwoven fabric, a melt blown nonwoven fabric, or an SMS nonwoven fabric) formed of hydrophobic fibers is used. As the elastic member 35, for example, a polyurethane thread, a strip-shaped polyurethane film, a thread-shaped or strip-shaped natural rubber, or the like is used. In the present embodiment, the polyurethane thread is used as the elastic member 35. The sheet member 5 is made of the same material as the top sheet 21 or a water-repellent or hydrophilic treated nonwoven fabric (for example, a spunbond nonwoven fabric, a melt blown nonwoven fabric, or an SMS nonwoven fabric).

  The exterior sheet 4 includes an inner sheet 41 and an outer sheet 42 laminated on the inner sheet 41 on the lower side of the inner sheet 41 (that is, the side opposite to the wearer). As shown in FIG. 2, a plurality of leg elastic elements 430, a plurality of waist elastic elements 440, and a plurality of auxiliary elastic elements 450 are provided between the inner sheet 41 and the outer sheet 42. Are joined together.

  Specifically, a plurality of waistline elastic elements 440 each extending in the width direction of the diaper are arranged on the front portion 401 and the rear portion 403 in a direction perpendicular to the width direction of the diaper. Actually, the plurality of waistline elastic elements 440 are joined to the exterior sheet 4 in an expanded state and contracted to contract the exterior sheet 4 to form a body gather. Among the plurality of waist elastic elements 440, some waist elastic elements 440 arranged in the vicinity of the edge of the body opening 11 (see FIG. 1) are arranged closely, and these waist elastic elements 440 are arranged closely. Thus, the disposable diaper 1 fits strongly around the waist of the wearer.

  Two leg elastic elements 430 are joined as front elastic portions 431 along the edge of each side portion of the intermediate portion 402 in FIG. 2 on the front portion 401 side. One end of each leg elastic element 430 overlaps with the absorbent body 20 in the vicinity of the longitudinal center of the absorbent body 20 (more precisely, when viewed from a direction perpendicular to the exterior sheet 4), and the other end is a front portion. 401 is located at the side end of the portion on the intermediate portion 402 side. Similarly, the three leg-hole elastic elements 430 are joined as the rear elastic part 432 along the edge of the side part of the intermediate part 402 on the rear part 403 side. One end of the element 430 overlaps the absorbent body 20, and the other end is located at the side end of the rear portion 403. Similar to the waist elastic element 440, each leg elastic element 430 is joined to the exterior sheet 4 in an expanded state.

  In the disposable diaper 1, a set of the front elastic portion 431 and the rear elastic portion 432 (that is, a set of six leg-around elastic elements 430) on each side of the intermediate portion 402 functions as the leg-around elastic member 43. When the elastic member 43 contracts, the exterior sheet 4 on the side portion contracts. In this manner, by providing the pair of leg-hole elastic members 43 along the edges on both sides of the intermediate portion 402, a pair of leg-hole gathers (leg gathers) are formed.

  Further, at each side portion of the intermediate portion 402, between the front elastic portion 431 that is a portion of the leg elastic member 43 on the front portion 401 side and the rear elastic portion 432 that is a portion on the rear portion 403 side, A non-existing region 439 of the elastic member 43 is provided. In other words, the front elastic portion 431 and the rear elastic portion 432 are arranged apart from each other in the longitudinal direction of the absorbent body 20. In addition, with respect to the longitudinal direction of the absorbent body 20, the width of the non-existing region 439 is preferably 0.1 to 0.4 times the total length of the intermediate portion 402 (more preferably, 0.2 to 0 times. Less than 3 times).

  In addition, on each side of the absorbent body 20 in the front portion 401, three auxiliary elastic elements 450 are arranged in a convex shape that swells on the side opposite to the intermediate portion 402 (upper side in FIG. 2). One end of each auxiliary elastic element 450 overlaps the end of the absorbent body 20 on the front portion 401 side, the other end is located at the side end of the intermediate portion 402, and the auxiliary elastic element 450 is located around the other end and the auxiliary elastic element 450 is located around the leg elastic element. Crosses 430. Similarly, in the rear portion 403, three auxiliary elastic elements 450 are arranged on each side of the absorbent body 20 in a convex shape that swells on the side opposite to the intermediate portion 402 (the lower side in FIG. 2). The One end of each auxiliary elastic element 450 overlaps with the end of the absorbent body 20 on the rear part 403 side, the other end is positioned on the side end of the intermediate part 402, and the auxiliary elastic element 450 is located around the other end and the auxiliary elastic element 450 is elastic around the leg. Crosses 430. Actually, the plurality of (all) auxiliary elastic elements 450 in the front part 401 and the rear part 403 are joined to the exterior sheet 4 in an extended state, and are absorbed in the front part 401 and the rear part 403, respectively. A set of three auxiliary elastic elements 450 positioned on each side of the body 20 contracts as one auxiliary elastic member 45.

  As described above, in each of the front portion 401 and the rear portion 403 of the disposable diaper 1, the pair of auxiliary elastic members 45 are joined to the exterior sheet 4 in the stretched state at the positions on both sides of the absorbent body 20, thereby The corresponding portion of the exterior sheet 4 contracts due to the contraction of the elastic member 45. Thereby, in the disposable diaper 1 (refer FIG. 1) which joined the both ends of the front part 401 to the both ends of the back part 403, respectively, the upper end side of the disposable diaper 1 from the edge part vicinity of the absorber 20, and a diaper By a portion of the auxiliary elastic member 45 extending toward the outer side in the width direction (direction away from the absorber 20) (a portion denoted by reference numeral 451 in FIG. 2 and hereinafter referred to as a “first inclined portion 451”). The end of the absorber 20 is pulled up to the upper end side. Moreover, it is a site | part (it attaches | subjects the code | symbol 452 in FIG. 2) the auxiliary | assistant elastic member 45 extended toward the upper end side from the side edge of the intermediate part 402, and the width direction inner side (direction approaching the absorber 20). Hereinafter, the leg gathers (the part in the vicinity of the front part 401 or the rear part 403) are pulled up to the upper end side by the “second inclined part 452”.

  Regions on the inner surface of the exterior sheet 4 surrounded by the pair of auxiliary elastic members 45, the pair of front elastic portions 431, and the absorber 20 on both sides of the end portion on the front portion 401 side of the absorber 20 (reference numerals in FIG. 2). 47 is attached to a pair of pocket portions (hereinafter referred to as 47 in the same manner as the region 47) that are recessed on the opposite side of the wearer due to contraction of the pair of auxiliary elastic members 45 and the pair of front elastic portions 431. .) Is formed. Similarly, a pair of pockets are formed on the inner surface of the exterior sheet 4 surrounded by the pair of auxiliary elastic members 45, the pair of rear elastic portions 432, and the absorber 20 on both sides of the end portion on the rear portion 403 side of the absorber 20. A portion 47 is formed.

  As shown in FIG. 2, two sheet-like absorbent members 6 extending in the width direction of the diaper are provided on the exterior sheet 4 so as to overlap both ends of the absorbent body 20. Each absorbent member 6 is bonded and fixed on the exterior sheet 4 by a hot melt adhesive or the like. Actually, the central part (the central part in the width direction of the diaper) of the absorbent member 6 is disposed between the end of the absorbent body 20 and the exterior sheet 4 and joined to the both. Is firmly fixed on the exterior sheet 4. Further, both end portions 61 of the absorbent member 6 protrude on both sides of the absorbent body 20, and are located between the crossing position of the auxiliary elastic member 45 and the leg-surrounding elastic member 43 and the side end of the absorbent body 20. . Thereby, the both ends 61 of the absorbent member 6 are disposed in the pair of pocket portions 47. In the disposable diaper 1, even when excrement leaks from the absorber 20, the excrement is captured by the pocket portion 47 and the moisture is absorbed by the end portion 61 of the absorbent member 6. Thus, the both end portions 61 of the absorbent member 6 are a pair of auxiliary absorption portions that absorb the excrement secondarily (hereinafter, the reference numeral 61 is attached similarly to the end portions 61). In the absorbent body 20, there is a high possibility that excrement leaks from the part 341 of the side wall part 34 fixed on the joint part 33, but in the disposable diaper 1, the pocket part 47 is arranged on the side of the part 341. In addition, it is possible to capture excrement leaking from the portion 341.

  As the inner sheet 41 and the outer sheet 42 of the exterior sheet 4 in FIG. 3, a water-repellent or liquid-impervious non-woven fabric or plastic film formed of hydrophobic fibers is used similarly to the back sheet 23, or A laminated sheet in which these nonwoven fabrics and plastic films are laminated is used. As a plastic film, what has moisture permeability (air permeability) is preferable. Further, as the inner sheet 41 or the outer sheet 42, similarly to the top sheet 21, a nonwoven fabric formed of hydrophilic fibers or a liquid-permeable nonwoven fabric formed of hydrophilic fibers subjected to hydrophilic treatment may be used.

  As the leg elastic element 430, the waist elastic element 440, and the auxiliary elastic element 450, for example, a polyurethane thread, a belt-like polyurethane film, a thread-like or belt-like natural rubber, and the like are used similarly to the elastic member 35 of the side sheet 3. In this embodiment, polyurethane yarn is used as the leg elastic element 430, the waist elastic element 440 and the auxiliary elastic element 450. Note that the number of elastic elements constituting the leg-hole elastic member 43 and the auxiliary elastic member 45 may be arbitrarily changed, and each elastic member may be constituted by one elastic element.

  As the absorbent member 6, for example, a non-woven fabric formed of hydrophilic fibers, or a superabsorbent material such as a superabsorbent polymer (SAP) or a superabsorbent fiber is sandwiched between the non-woven fabrics, and both are thermocompression bonded. Is used.

  When the disposable diaper 1 shown in FIG. 1 is worn, after the legs of the wearer are inserted into the pair of leg openings 12 through the trunk openings 11, the disposable diaper 1 is pulled up to the circumference of the wearer's waist. It is done. At this time, the first inclined portion 451 of the auxiliary elastic member 45 in FIG. 2 raises each end of the absorbent body 20 upward (the head side of the wearer), and the absorbent body 20 is in close contact with the wearer's crotch part. To do. Further, the second gathered portion 452 of the auxiliary elastic member 45 raises the leg gathers upward, and the leg gathers adhere closely to the wearer's groin.

  As described above, in the disposable diaper 1 of FIG. 2, the absorber 20 side and the disposable diaper 1 are disposed from both side ends of the intermediate part 402 at each of the front part 401 side and the rear part 403 side of the intermediate part 402. A pair of auxiliary elastic members 45 are joined on the exterior sheet 4 in an extended state so as to go to the upper end side. As a result, a pair of pocket portions 47 is formed in the region of the inner surface of the exterior sheet 4 surrounded by the pair of auxiliary elastic members 45, the pair of leg-around elastic members 43, and the absorber 20 on both sides of the absorber 20. As a result, in the disposable diaper 1, even when excrement leaks from the absorber 20, the excrement can be prevented from being captured by the pocket portion 47 and leaking from the leg periphery to the outside. Further, by arranging the pair of auxiliary absorbing portions 61 in the pair of pocket portions 47, it is possible to further prevent the excrement from being absorbed by the auxiliary absorbing portion 61 and leaking outside from the legs.

  In the disposable diaper 1, the non-existing region 439 of the leg-hole elastic member 43 is provided between the front elastic portion 431 and the rear elastic portion 432 of the leg-hole elastic member 43 on each side portion of the intermediate portion 402. The arrangement of the pocket portion 47 formed by the contraction of the elastic member 45 and the leg-surrounding elastic member 43 is limited to the lateral vicinity of both end portions of the absorber 20 (that is, the end portions on the front portion 401 side and the rear portion 403 side). can do. This prevents a part of the pocket portion from being formed in the vicinity of the side of the central portion of the absorbent body 20, and the presence of the pocket portion while excrement such as loose stool is captured by the pocket portion. Thus, it is possible to prevent the wearer's walking motion from being hindered excessively.

  Moreover, in the disposable diaper 1 of FIG. 2, the auxiliary | assistant elastic member 45 is the upper end side (namely, the exterior sheet | seat 4 in a longitudinal direction) of the disposable diaper 1 in the position of each side of the absorber 20 in the front part 401 and the back part 403. Are bent so as to protrude toward both ends) and bonded to the exterior sheet 4 in an extended state. Thereby, the both ends of the absorber 20 can be pulled up to the upper end side by the auxiliary elastic member 45 at the time of wearing, and the absorber 20 can be easily brought into close contact with the wearer's crotch portion. Can be absorbed. Further, the gathers around the legs are also pulled up to the upper end side by the auxiliary elastic member 45, and the gathers around the legs can be easily brought into close contact with the groin of the wearer. It is possible to suppress the leakage. As a result, combined with the capture of the excrement by the pocket portion 47, it is possible to further prevent the excrement from leaking outside from the leg periphery.

  Furthermore, in each of the front portion 401 and the rear portion 403, the pair of auxiliary elastic members 45 realize the lifting of the end of the absorber 20 and the gathers around the legs, so the end of the absorber 20 is pulled up to the upper end side. The manufacturing cost of the disposable diaper can be reduced as compared with the case where the elastic member and the elastic member that raises the leg gathers to the upper end side are provided separately.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made.

  In the disposable diaper 1 of FIG. 2, the auxiliary elastic member 45 that is curved so as to protrude toward the upper end side is provided, whereby the inner surface of the exterior sheet 4 that is surrounded by the auxiliary elastic member 45, the leg-around elastic member 43, and the absorber 20. However, depending on the design of the disposable diaper, as in the disposable diaper 1a shown in FIG. An auxiliary elastic member 45a (auxiliary elastic element 450a) having only a portion (a portion corresponding to the second inclined portion 452 in FIG. 2) extending toward the inner side in the width direction of the diaper (direction approaching the absorber 20) is provided. May be.

  In the disposable diaper 1, 1a, the pair of auxiliary elastic members 45, 45a and the absorbent member 6 may be provided only on one of the front part 401 side and the rear part 403 side of the intermediate part 402. It is possible to prevent the excrement leaked from the absorber 20 from leaking around the legs to the outside to some extent. Usually, since the excrement leaked from the absorber often leaks from the rear part side around the leg, the pair of auxiliary elastic members 45, only on one of the front part 401 side and the rear part 403 side of the intermediate part 402, When providing 45a and the absorptive member 6, it is preferable that a pair of auxiliary | assistant elastic members 45 and 45a and the absorptive member 6 are provided in the site | part by the side of the back part 403 of the intermediate part 402. FIG.

  On the other hand, in order to further prevent the excrement from leaking out of the leg from the outside, as shown in FIGS. 2 and 4, the same two pairs of auxiliary elastic members are provided on the front part 401 side and the rear part of the intermediate part 402. It is preferable to be provided at each site on the 403 side. In this case, as described above, a pair of pocket portions 47 are formed on both sides of the front portion 401 side portion of the absorbent body 20, and another pair of pocket portions 47 are formed on both sides of the rear portion 403 side portion of the absorbent body 20. Pocket portions 47 are formed, and two similar pairs of auxiliary absorption portions 61 (however, the shapes are slightly different in accordance with the size of the pocket portions 47) and the other portions in the pair of pocket portions 47 and the other Are disposed in the pair of pocket portions 47.

  Moreover, in the disposable diaper 1 and 1a, although the both ends of the absorbent member 6 are made into a pair of auxiliary | assistant absorption part 61, it becomes possible to reduce the number of parts of a disposable diaper, but the disposable disposable diaper When preventing the diaper from becoming bulky, a pair of auxiliary absorbent parts that are isolated from each other (that is, the part of the absorbent member 6 that overlaps the absorbent body 20 is omitted) are respectively provided in the pair of pocket parts 47. It may be provided.

  In one manufacturing method of disposable diapers, after joining a continuous polyurethane yarn on the exterior sheet, the polyurethane thread is cut together with the exterior sheet to form an elastic element, so that a minute hole is formed in the exterior sheet. There is. Therefore, when a disposable diaper is manufactured by the above manufacturing method, as shown in FIG. 2 and FIG. 4, end portions on the absorber 20 side (elasticity) in each of the leg-hole elastic member 43 and the auxiliary elastic members 45 and 45a. It is preferable that the hole of the exterior sheet is covered with the absorbent body 20 by overlapping with the absorbent body 20. When the disposable diaper is manufactured by another manufacturing method, or when the hole of the exterior sheet is not a problem, the end portions of the leg elastic member 43 and the auxiliary elastic members 45 and 45a on the absorber 20 side are It does not necessarily have to overlap with the absorber 20 (see the auxiliary elastic member 45b in FIG. 5 described later). However, it is preferable that the end portions on the absorber 20 side of the auxiliary elastic members 45 and 45 a are provided in the vicinity of the absorber 20.

  Moreover, if the pocket part 47 is formed in the area | region of the inner surface of the exterior sheet | seat 4 enclosed with the auxiliary | assistant elastic members 45 and 45a, the leg periphery elastic member 43, and the absorber 20, the auxiliary | assistant elastic members 45 and 45a are not necessarily leg. As shown in FIG. 5, the end of the auxiliary elastic member 45b (auxiliary elastic element 450b) on the side of the leg elastic member 43 is slightly separated from the side end of the intermediate portion 402, as shown in FIG. The auxiliary elastic member 45b and the leg-hole elastic member 43 may be in non-contact with each other. As described above, in the disposable diaper 1, 1a, 1b, the front elastic part 431 or the rear elastic part 432 of the auxiliary elastic members 45, 45a, 45b, and the leg elastic members 43 in proximity to or in contact with the auxiliary elastic members 45, 45a, 45b. And the pocket part 47 is formed in the area | region of the inner surface of the exterior sheet | seat 4 enclosed by the absorber 20 roughly. In addition, in the disposable diaper 1b of FIG. 5, it can be understood that the auxiliary elastic member 45b is arranged so as to be directed from the side end of the intermediate portion 402 toward the absorber 20 and toward the upper end side of the disposable diaper 1b.

  Depending on the design of the disposable diaper, the front elastic part 431 and the rear elastic part 432 of the leg-surrounding elastic member 43 may be approximately connected to each other, and the absence region 439 of the leg-surrounding elastic member 43 may be omitted. Moreover, the auxiliary | assistant absorption part 61 is abbreviate | omitted and the excrement leaked from the absorber 20 may be prevented from leaking outside from the leg periphery only by presence of the pocket part 47. FIG.

  The configurations in the above-described embodiments and modifications may be combined as appropriate as long as they do not contradict each other.

1, 1a, 1b Disposable diaper 4 Exterior sheet 6 Absorbent member 11 Trunk opening 12 Leg opening 20 Absorber 43 Leg elastic member 45, 45a, 45b Auxiliary elastic member 47 Pocket portion 61 Auxiliary absorbing portion 401 Front portion 402 Intermediate Part 403 Rear part 431 Front elastic part 432 Rear elastic part 439 Absent region (of the leg-hole elastic member)

Claims (7)

A pants-type disposable diaper having a trunk opening at the top and a pair of leg openings at the bottom,
Bending at an intermediate portion between a front part covering the front side of the wearer and a rear part covering the rear side, both side ends of the front part are respectively joined to both side ends of the rear part, An exterior sheet in which a trunk opening is formed at the upper end of the rear part, and a pair of leg openings are formed on both sides of the intermediate part below the front part and the rear part,
An absorber attached on the exterior sheet to absorb excrement from the wearer;
A pair of leg-around elastic members that are joined on the exterior sheet in a stretched state along the edges of both side edges of the intermediate portion and contract to form a leg-around gather;
A pair of auxiliary elastic members joined in a stretched state on the exterior sheet so as to go from the both side ends toward the absorber side and the upper end side at the front part side or the rear part side part of the intermediate part; ,
On both sides of the absorbent body, a pair of pocket portions are formed in a region of the inner surface of the exterior sheet surrounded by the pair of auxiliary elastic members, the pair of elastic members around the legs, and the absorbent body, and inside the pair of pocket portions A pair of auxiliary absorbers,
A disposable diaper characterized by comprising. The disposable diaper according to claim 1,
The pair of auxiliary absorbing portions are positioned at both ends of the pair of pocket portions, and the center portion is the both ends of one member disposed between the absorber and the exterior sheet. Disposable diapers. The disposable diaper according to claim 1 or 2,
The disposable diaper characterized in that the pair of auxiliary elastic members are curved so as to be convex toward the upper end side and joined onto the exterior sheet. The disposable diaper according to any one of claims 1 to 3,
The disposable diaper characterized in that ends of the pair of auxiliary elastic members on the absorber side overlap with the absorber. The disposable diaper according to any one of claims 1 to 4,
Another pair of auxiliary elastic members similar to the pair of auxiliary elastic members;
Another pair of auxiliary absorbent parts similar to the pair of auxiliary absorbent parts;
Further comprising
The pair of pocket portions are formed on both sides of the front portion side portion of the absorber,
Another pair of pocket portions is formed on both sides of the rear portion side portion of the absorber,
The disposable diaper characterized in that the other pair of auxiliary absorbing portions are disposed in the other pair of pocket portions. A pants-type disposable diaper having a trunk opening at the top and a pair of leg openings at the bottom,
Bending at an intermediate portion between a front part covering the front side of the wearer and a rear part covering the rear side, both side ends of the front part are respectively joined to both side ends of the rear part, An exterior sheet in which a trunk opening is formed at the upper end of the rear part, and a pair of leg openings are formed on both sides of the intermediate part below the front part and the rear part,
An absorber attached on the exterior sheet to absorb excrement from the wearer;
A pair of leg-around elastic members that are joined on the exterior sheet in a stretched state along the edges of both side edges of the intermediate portion and contract to form a leg-around gather;
A pair of auxiliary elastic members joined in a stretched state on the exterior sheet so as to go from the both side ends toward the absorber side and the upper end side at the front part side or the rear part side part of the intermediate part; ,
With
The pair of leg-around elastic members are
A pair of front elastic portions that are the front side portions;
A pair of rear elastic parts which are parts on the rear part side;
With
On both sides of the intermediate portion, a leg-free elastic member is provided between the pair of front elastic portions and the pair of rear elastic portions,
On both sides of the absorber, the pair of auxiliary elastic members, the pair of front elastic portions or the pair of rear elastic portions in proximity to or in contact with the pair of auxiliary elastic members, and the exterior sheet surrounded by the absorber A disposable diaper characterized in that a pair of pockets are formed in the inner surface area of the diaper. The disposable diaper according to claim 6,
The disposable diaper characterized in that the pair of auxiliary elastic members are curved so as to be convex toward the upper end side and joined onto the exterior sheet.

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