JP2005245958A - Disposable pants and manufacturing method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide disposable pants capable of suppressing the leakage of urine or the like and a method suitable for the manufacturing of such disposable pants. <P>SOLUTION: In the disposable pants 1, both side parts of an anterior abdominal part P and a back part Q are joined and a crotch part R is formed by connecting both front and rear end parts 17a and 17b of an absorbent body 4 to the anterior abdominal part P and the back part Q. For the back part Q, in a state of connecting the rear end part 17b of the absorbent body 4 so as to pass through a lower side 20 positioned in the opposite direction to an upper side 19 forming the waist opening, both ends (29) of the lower side 20 are positioned on the outer side from the absorbent body 4, and leg edge parts 20a for leg openings are formed from the respective lower side ends (29) to a joining side part 14. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a disposable pant that can also be used as a disposable diaper and a method for manufacturing the same.

  In recent years, there has been an increasing demand for disposable pants that fit the wearer's body by providing shrinkage around the waist, waist and legs, and these disposable pants are increasingly used for both children and adults. There has been a lot to be done.

  By the way, since the said disposable pants can be removed like underwear, it is easy to remove for a moving child, and it is also easy to remove for an adult who needs excretion care. Furthermore, for adults, it is possible to prevent a diaper from being repelled, which is advantageous in that it can also be used for psychological care.

  In addition to being able to take off like underwear as disposable pants having such advantages, in some cases it is not necessary to take off all clothing and pass legs through the leg holes of the pants when removing It has been proposed (Japanese Patent Publication No. 2003-526406).

As shown in FIGS. 7 and 8, the disposable pants have a left side portion 100a of the front abdomen 100 and a left side portion 101a of the back portion 101 joined together, and a right side portion 100b of the front portion 100 and a right side portion 101b of the back portion 101. And the front end portion 102a of the absorbent body main body 102 is connected to the front abdomen 100, and the rear end portion 102b of the absorbent body main body 102 is connected to the back portion 101 so that a crotch portion is formed. ing.
Special table 2003-526406 gazette

  However, as in Patent Document 1, when the leg edge portion 101c for leg opening in the back portion 101 is extended from the edge 102c in the width direction of the absorber body 102, the width on the lower end side of the back portion 101 is reduced. There is a concern that the urine and the like are likely to leak due to narrowing.

  The present invention has been made to solve such problems of the prior art, and provides a disposable pant capable of suppressing leakage of urine and the like and a method suitable for manufacturing such disposable pant. Objective.

  The disposable pants according to the first aspect of the present invention have a crotch portion formed by joining the front and rear end portions of the absorber body to the front abdomen and the back part while joining both sides of the front abdomen and the back part. In the state where the rear end of the absorbent body is connected so as to pass through the lower side opposite to the upper side forming the waist opening, A leg edge portion for opening a leg is formed so that both ends are located outward from the absorber main body and the side portions are joined from the respective lower side ends.

  In the method for manufacturing the disposable pants according to the invention of claim 2, the front and rear end portions of the absorber body are connected to the front abdomen and the back part while the both sides of the front abdomen and the back part are joined. Is a method of manufacturing a disposable pant in which an elastic member is provided on a leg edge portion for leg opening of the back portion, and is placed on one side edge portion of the belt member for the back portion and After joining the end portions, one side edge side of the belt member for the back portion is separated from the absorber main body by a certain distance and cut into a substantially V shape to form a leg edge portion for leg opening.

  In the case of the disposable pants of the invention of claim 1, since both ends of the lower side of the back part are located outward from the absorber body, it becomes possible to widen the width of the lower end side of the back part. Accordingly, the wearer's buttocks can be wrapped in a wide range, and leakage of urine and the like can be suppressed.

  In the case of the method according to the second aspect of the present invention, after joining the absorber body to one side edge of the belt member for the back portion, the one side edge side is cut into a substantially V shape to form the leg edge. Even when the elastic member with the lower edge of the back part corresponding to the one side edge at the leg edge part pulls up, the absorber body absorbs the drawing force and the leg edge part It is possible to prevent the occurrence of wrinkles and to efficiently produce beautiful disposable pants with good appearance.

  FIG. 1 is a front view showing a disposable pant according to an embodiment of the present invention, FIG. 2 and FIG. 3 are front views showing a state in which left and right belt members are deployed, and FIG. 4 shows a state in which the disposable pants are completely deployed. FIG.

  The disposable pant 1 has a front abdomen P, a back part Q, and a crotch part R. The front abdominal part P is formed in a belt shape in which an outer surface side sheet and a skin surface side sheet are joined with elastic members 5 and 6 (described later) sandwiched therebetween in an expanded state, and the vertical width is constant. In the back portion Q, the outer side sheet and the skin side sheet are joined with elastic members 5, 6, and 7 described later sandwiched therebetween in an extended state, the upper side 19 and the lower side 20 are parallel, and the left and right sides are The upper edge portion 19a is parallel, and the leg edge portion 20a which is the lower side portion of the left and right sides is formed in a substantially hexagonal shape with an inclination. The outer edges of both sides of the front abdominal part P are joined by the side upper part 19a and the side joint part (joint side part) 14 which are parallel to the left and right sides of the back part Q.

  The crotch portion R is joined so that the front end portion 17a of the rectangular absorbent body 4 having a constant left and right width can be engaged and disengaged inside the front abdomen P, and the rear end portion 17b of the absorber body 4 is connected to the back portion Q. It is formed by being joined to the inner surface. In other words, the crotch portion R is configured by a portion between the front end portion 17a and the rear end portion 17b of the absorbent body 4. The lower side 20 of the back portion Q is set to be longer than the width dimension of the absorbent body 4, and the intersection point 29 between the lower side 20 and the leg edge 20 a is positioned outward from the absorbent body 4. ing.

  A waist opening 2 is formed in a portion surrounded by the front abdomen P and the back portion Q, and left and right leg openings 3 are formed in a portion surrounded by the front abdomen P, the back portion Q and the crotch R. ing. In the vicinity of the upper side of the front abdomen P that forms the opening 2 and in the vicinity of the upper side 19 of the back part Q, the waist elastic member 5 is placed along the upper edge of the opening 2 so as to be stretched when worn. It is installed. Further, the leg elastic member 7 is worn along the edge of the leg opening 3 in the vicinity of the leg edge 20a of the back part Q forming the leg opening 3 and in the vicinity of the left and right edges of the absorber body 4. Sometimes it is arranged to be stretched. These elastic members 5 and 7 serve to fit the disposable pants 1 to the wearer's body and prevent leakage from the openings 2 and 3. The leg elastic member 7 is also provided in the vicinity of the lower side 20 of the back portion Q. However, the elastic member 7 in this portion is subjected to a weakening process and its elasticity is eliminated or weakened.

  Also, the front abdomen P and the back part Q are arranged below the waist elastic member 5 so that the body elastic member 6 is extended when worn so that it can be easily fitted around the wearer's abdomen. It is installed. In the back portion Q, the lower end of the elastic member 6 is positioned at a substantially central position in the vertical direction, and the leg elastic member 7 is disposed below the elastic member 6.

  The front abdominal part P is formed with a cutting line 28 that can be opened and closed left and right as shown in FIGS. 2 and 3 at a substantially central position, and when the cutting line 28 is cut, The abdomen P can be separated into a right band member 8 and a left band member 9 having an inner edge 15.

  A knob unit 10 is provided on the outer surface side of the front abdominal part P so as to straddle the cutting line 28. This knob unit 10 is for making it easy to grasp the inner edges 15 of the band members 8 and 9 to be separated, and is composed of an outer surface side member 11 and a skin surface side member 12 as joint portions. The side member 12 is joined to a position near the inner edge 15 of the left band member 9, and one outer surface side member 11 is joined to the right band member 8 in a state where a part protrudes outward from the inner edge 15. In addition, the installation location of the knob | pick unit 10 in the front abdominal part P is subjected to the weakening process of the elastic member 5 for the waist and the elastic member 6 for the body, and the elasticity is erased or weakened.

  The portion of the outer surface side member 11 that protrudes to the outside is overlapped with the portion near the inner edge of the skin surface side member 12 with the skin surface side member 12 facing inward, and the overlapping portion is the first fastening means. Is provided. In the illustrated example, a hook-and-loop fastener having a hook member 21 and a loop member 22 is used as the first fastening means, and the hook member 21 is disposed on the inner side of the outer surface side member 11 overlapping the skin surface side member 12. The loop members 22 are respectively attached to the outer surfaces of the skin surface side member 12 overlapping the outer surface side member 11. This hook-and-loop fastener is joined so that it can be engaged and disengaged by overlapping the outer surface side member 11 and the skin surface side member 12 as described above. In addition, the position where the hook member 21 and the loop member 22 overlap is set to be approximately the center of the front abdominal part P.

  Therefore, the front abdominal part P is separated into the band members 8 and 9 by removing the hook member 21 and the loop member 22 of the knob unit 10 and breaking the cutting line 28, so that these band members 8 and 9 can be opened to the left and right. it can. 2 shows a state in which the right band member 8 is opened, and FIG. 3 shows a state in which the left band member 9 is also opened. Further, a protruding portion 13 is provided on the inner edge side of the outer surface side member 11 so as to be easily grasped.

  Here, when the hook member 21 and the loop member 22 make a pair and the hook fastener 21 and the loop member 22 are strongly pressed together, the hook member 21 and the loop member 22 are locked so that they are not easily detached from each other. When the hook member 21 and the loop member 22 are strongly peeled off by hand, the hook member 21 and the loop member 22 are disengaged from each other, which is also called a mechanical fastener.

  Contrary to the above, the hook member 21 may be provided on the skin surface side member 12 and the loop member 22 may be provided on the outer surface side member 11 side. The loop member 22 of the surface fastener as the first fastening means is appropriately selected from a knitted fabric, a woven fabric, a non-woven fabric or the like having a function as a loop portion. In this case, the loop member 22 can be omitted by using the knitted fabric, woven fabric, nonwoven fabric, or the like as the sheet itself to which the loop member 22 is adhered. Further, instead of the hook-and-loop fastener, a pair of detachable joining means selected from an adhesive and a release agent, a button and a button hole, and a string can be used.

  The absorbent body 4 is configured as shown in FIG. That is, the upright base end portions 25a of the side sheets 25 are overlapped on both ends of the top surface 24 on the skin surface side, and both are joined by hot melt or the like, and between the top sheet 24 and the back sheet 27 on the outer surface side. The absorbent core 23 is sandwiched between the outer end portions of the side sheets 25 and the end portions of the back sheet 27 with the leg elastic member 7 interposed therebetween. Further, the inner end portion of each side seat 25 is folded back and overlapped with the elastic member 26 inside, and the overlapping portion 25b is joined by heat sealing or the like. The elastic member 26 is for raising the inner edge of each side seat 25 in a direction toward the wearer. In addition, it is more preferable to provide a non-woven fabric having a touch like a cloth as shown by a two-dot chain line in FIG.

  A hook member 18 of a hook-and-loop fastener as second fastening means is attached to the outer surface side of the front end portion 17a of the absorbent body 4 that is detachably joined to the inside of the front abdomen P (see FIG. 3). The hook member 18 is detachably joined to the skin inner side of the front abdomen P, in this illustrated example, to the skin inner side of the left band member 9. In addition, the skin inner side of the left side belt member 9 is made of a material that functions as a loop member of a hook-and-loop fastener, for example, a knitted fabric, a woven fabric, a non-woven fabric, or the like. The second fastening means can be replaced with other means in the same manner as the first fastening means.

  Therefore, the hook member 21 and the loop member 22 of the knob unit 10 are removed, and the cutting line 28 is broken to separate the band members 8 and 9, the band member 8 is opened to the right side, and the hook member 18 of the second fastening means. The band member 9 can be opened to the left by peeling the band member 9 from the left side. In contrast to the above, the cutting line 28 remains broken, but it can be restored to its original state. At this time, the inner edges 15 of the band members 8 and 9 are brought into contact with each other.

  In FIG. 4, the lower side 20 of the back part Q is positioned at the middle in the front-rear direction of the absorbent body 4, but the lower side 20 may be extended toward the lower side or may be contracted toward the upper side 19. .

  Here, constituent materials of each member will be described.

[Skin side sheet of front abdominal part P and back part Q]
For the skin side sheet, a water-repellent nonwoven material (spunbond nonwoven fabric, melt blown nonwoven fabric, SMS nonwoven fabric, etc.) is used. Preferably, it is a water-repellent nonwoven material having a basis weight of 10 to 25 g / m ² . Also, only the inner surface is hydrophilized [surfactant is applied or a layer of hydrophilic fibers (rayon, cotton, etc.) is made. In this case, the touch when touching the skin is improved, and a sweat absorption effect can be expected.

[Outer seats of front abdomen P and back Q]
For the outer sheet, a breathable water-repellent nonwoven material (spunbond nonwoven fabric, melt blown nonwoven fabric, SMS nonwoven fabric, etc.) is used. Preferably, it is a water-repellent nonwoven material having a basis weight of 10 to 25 g / m ² .

[Absorption core 23]
The absorbent core 23 is formed by mixing an absorbent core obtained by mixing a granular polymer water absorbent with a hydrophilic fiber aggregate layer such as pulverized pulp fiber or cellulose fiber into a coated sheet such as a paper sheet such as tissue paper or a liquid-permeable nonwoven fabric sheet. It is an absorbent body that is wrapped in and molded into a predetermined shape (rectangular shape, hourglass shape, gourd shape, etc.). A sheet-like absorbent body (for example, an air-laid absorbent body) obtained by forming the fiber or the polymer water-absorbing body into a sheet shape may be used after being formed into a predetermined shape. In order to maintain the shape even when the wearer walks or rolls over, shape retention means (application of hot melt adhesive, mixing of synthetic fibers) is applied to the hydrophilic fiber aggregate layer or sheet. It doesn't matter.

[Top sheet 24]
The top sheet 24 is preferably a liquid-permeable nonwoven material. For example, a nonwoven material using hydrophilic fibers (cellulose, rayon, cotton, etc.) or a surface of hydrophobic fibers (polypropylene, polyester, polyamide, nylon, etc.) is treated with a surfactant to make the nonwoven material liquid-permeable. Used. Preferably, it is a liquid-permeable non-woven material (point bond non-woven fabric, air-through non-woven fabric) having a basis weight of 10 to 25 g / m ² , which is made hydrophobic by treating hydrophobic fibers with a surfactant.

[Backsheet 27]
The back sheet 27 is made of a water-repellent nonwoven material (spunbond nonwoven fabric, melt blown nonwoven fabric, SMS nonwoven fabric, etc.), plastic film (which may be breathable or non-breathable, but a preferred embodiment is a breathable plastic film. Or a composite material thereof. A breathable polyethylene film having a basis weight of 15 to 40 g / m ² is preferable.

[Side sheet 25]
The side sheet 25 is made of a water-repellent nonwoven material (spunbond nonwoven fabric, melt blown nonwoven fabric, SMS nonwoven fabric, etc.). Preferably, it is a water-repellent nonwoven material having a basis weight of 10 to 25 g / m ² .

[Elastic members 5, 6, 7, 26]
Each elastic member 5, 6, 7, 26 is made of an elastic stretch material (polyurethane yarn, polyurethane film, natural rubber, etc.) that is usually used for disposable diapers, and is between an outer sheet and a skin sheet. In the stretched state, it is attached by a suitable attachment means such as hot melt adhesive, thermal bonding, ultrasonic bonding or the like. A rubber-based hot melt adhesive is preferred. The elastic members 5, 6, 7, and 26 are preferably provided with polyurethane yarn having a fineness of 300 to 2000 dtex and stretched by 1.1 to 5.0 times.

[Picking unit 10]
The materials used for the outer surface side member 11 and the skin surface side member 12 of the knob unit 10 can be appropriately selected from nonwoven fabric materials, woven fabric materials, knitted fabric materials, and plastic materials. Especially, the nonwoven fabric material manufactured by the combination of 2 or 3 or more of the spun bond method, the air through method, the point bond method, the melt blow method, the airlaid method, or these manufacturing methods is preferable. Furthermore, the nonwoven fabric material by the spunbond method of 30-100 g / m < ² > of fabric weight or the SMS method which combined the spunbond method and the melt blow method is preferable from the point of intensity | strength. Most preferred is a nonwoven material produced by the spunbond method with a basis weight of 50 to 85 g / m ² . The material can be appropriately selected from synthetic fibers such as polypropylene, polyethylene, polyester and polyamide, and natural fibers such as rayon, pulp and silk. Preferably, synthetic fibers such as polypropylene, polyethylene and polyester can be used. Those having a main component are strong and suitable. Most preferred is polyester fiber.

  In addition, it is desirable that the knob unit 10 is easy to grasp and prevents breakage.

[Bonding of each sheet material]
For joining the above sheet materials, methods such as hot melt adhesive, thermal joining, ultrasonic sealing and the like are appropriately used. For hot melt adhesives, select from hot melt adhesives such as rubber, polyolefin, vinyl acetate, etc., direct coater coating, indirect spiral coating, melt blow (curtain spray) coating, bead coating. Apply by the method. Note that thermal bonding is preferable for bonding the side portions.

  Therefore, in the case of the disposable pants 1 of the present embodiment, both ends of the lower side 20 of the back part Q, that is, the intersection point 29 between the lower side 20 and the leg edge part 20a is located outward from the absorbent body 4. And it becomes possible to widen the width | variety (left-right width) of the lower end side of the back part Q, and a wearer's buttocks can be wrapped in a wide range in connection with this, and leakage of urine etc. can be suppressed.

  FIG. 6 is a bottom view showing a production line suitable for producing the disposable pants 1 of the present embodiment.

  This production line has a first line 50 for producing the front part P and a second line 51 for producing the back part Q.

  In the first line 50, the elastic members 5 and 6 are placed in an extended state on the outer surface side sheet that is continuously transferred in the right-to-left direction 35 in the drawing, and the skin surface side sheet is covered from above. Both sheets are joined to form a sheet-like band member 30 for the front abdominal part P, and further, the band member 30 is transferred in a state where the elastic members 5 and 6 are extended, and the elastic member weakening step A, the cutting line forming step B, It is sequentially transferred to the downstream side through the knob unit joining step C, the remainder partial cutting step D and the absorber body joining step E.

  In the elastic member weakening step A, the weakening process is performed on the elastic members 5 and 6 in the formation of the cutting line 28 and the portion 33 to which the knob unit 10 is to be attached. In this elastic member weakening step, as a method of weakening the elastic member, a method of cutting the elastic member itself by a rotary cutter, a method of cutting partly by a rotary cutter provided with a fine blade, or an elastic member by heat From the method of curing the sheet sandwiched by melt film, the method of curing the sheet sandwiching the elastic member by ultrasonic waves, or the combination of these melt film formation and cutting with a rotary cutter, etc. Selected.

  Next, in the cutting line forming step B, a cutting line 28 extending in the width direction 34 is applied to the central portion of the band member 30 in the width direction 34. In this cutting line forming step, the cutting line 28 may be a perforated broken line such as a perforation, a non-perforated broken line, or may be melted by heat to form a thin portion.

  Next, in the knob unit joining step C, the knob unit 10 is overlapped and joined so as to straddle the cutting line 28 in the longitudinal direction (direction 35) on the lower surface side of the band member 30. The picking unit joining step C is preferably performed at a position as close as possible to the cutting line forming step B from the viewpoint of preventing the band member 30 from being broken by the cutting line 28.

  Next, in the remaining portion cutting step D, the remaining portion 32 of the band member 30 is cut out.

  Next, in the absorber main body joining step E, the absorber in which the rear end portion 17b is joined to the belt member 40 in the second line to be described later at a position near the cutting line 28 of the belt member 30 to which the knob unit 10 is joined. The front end portion 17a of the main body 4 is overlapped and joined in a detachable state.

  On the other hand, in the second line 51, the following processing is performed before the absorber main body joining step E. That is, in the second line 51, the elastic members 5, 6, 7 (however, 7 is not shown) are stretched on the outer sheet that is continuously transported in the right-to-left direction 35 of the drawing. The sheet-like belt member 40 for the back portion Q is joined by covering the skin side sheet from above and joining the two sheets, and further, the belt member 40 is being transferred while the elastic members 5 and 6 are extended. The rear end portion 17 b of the absorber body 4 manufactured in advance is joined onto the band member 40. On the downstream side, the side edge portion on one side (the first line 50 side) of the band member 40 is cut away so as to form a substantially V-shaped cutout 41 away from the absorber body 4 by a certain distance, thereby opening the legs. A leg edge portion 20a is formed.

  The first line and the second line are designed to be separated from each other by a predetermined distance and in parallel at least from immediately before Step E to the end of manufacturing.

  Next, the band member 30 is folded in two on the band member 30 connected via the absorbent body 4 so that the band member 40 overlaps, and then the band members 30, 40 at the center position of the V-shaped notch 41. These side parts are joined and cut at the center of the width of the joined side part (side joined part) 14 to continuously produce one disposable pant 1.

  Therefore, in the case of the manufacturing method according to the present embodiment, after the absorbent body 4 is joined to one side edge (the first line 50 side) of the back band member 40 in the second line 51, the band member 40 is joined. The leg edge portion 20a is formed by cutting off one side edge side into a substantially V-shape. Accordingly, the leg elastic 20 has a lower side 20 corresponding to the one side edge provided on the leg edge portion 20a. Even if the force that the member 7 draws toward the upper side 19 is generated, the absorbent main body 4 absorbs the drawing force and can prevent the leg edge portion 20a from being wrinkled. 1 can be manufactured efficiently. Of course, the substantially V-shaped shape of the notch 41 for forming the leg edge portion 20a includes other shapes such as a U-shape according to the shape of the leg edge portion.

  As a distance from the said absorber main body 4 to the intersection 29, about 5-30 mm is preferable. The reason is that the intersection point 29 is positioned outside the absorber body 4 even when the notch 41 is misaligned when the notch 41 is formed. Furthermore, 7-20 mm is desirable in order to locate the intersection 29 stably outside the absorber body 4.

  In the above-described embodiment, the rear end of the absorbent body is first joined to the belt member sheet on the back portion side, and then the front end of the absorbent body is joined to the belt member sheet for the front abdomen. However, the present invention is not limited to this, and the front end of the absorbent body is first joined to the belt member sheet for the front abdomen, and thereafter, or simultaneously, the rear end of the absorbent body is placed on the back side. You may join to. However, even in this case, after joining the rear end portion of the absorbent body to the belt member sheet on the back portion side, it is natural to cut off to form the leg edge portion.

  In the above-described embodiment, the first member and the second member are manufactured by placing an elastic member on the outer surface sheet and covering the skin surface sheet thereon, but the present invention is not limited to this. . For example, the first line and the second line may be manufactured by placing an elastic member on the skin side sheet and covering the outer side sheet thereon.

  Moreover, in embodiment mentioned above, although applied to manufacture of the disposable pants which join the rear-end part of an absorber main body to a back part, this invention is not restricted to this, The rear-end part of an absorber main body to a back part The present invention can be similarly applied to the production of disposable pants that are detachably joined.

  Further, the present invention is not limited to the disposable pants as shown in FIG. 1, but can be applied to other forms. For example, the front part may have a shape in which the vertical width is not constant and the center part protrudes downward. Moreover, the absorber main body may have a shape in which the front side and the rear side are wide instead of the rectangular shape. Furthermore, the present invention also includes disposable pants in which the front part and the back part are integrally joined to the absorbent body and are not separable.

It is a front view which shows the disposable pants which concern on one Embodiment of this invention. It is a front view which shows the state which expand | deployed the right belt | belt member in the disposable pants of FIG. It is a front view which shows the state which also expanded the left belt | band | zone member in the disposable pants of FIG. It is a front view which shows the state which expand | deployed the disposable pants of FIG. It is sectional drawing which shows the absorber main body in the disposable pants of FIG. It is a bottom view which shows the production line of the disposable pants of this invention. It is an expanded view of the disposable pants of patent document 1. It is an external appearance perspective view which shows the disposable pants of patent document 1. FIG.

Explanation of symbols

P Front abdomen Q Rear back R Crotch 1 Disposable pants 4 Absorber body 7 Leg elastic member 14 Joint side (side joint)
17a Front end of absorber body 17b Rear end of absorber body 19 Upper side 20 Lower side 20a Leg edge

Claims (2)

Disposable pants in which crotch parts are formed by connecting both front and rear ends of the absorber body to the front abdomen and the back part, as both sides of the front abdomen and the back part are joined,
In the state where the rear end portion of the absorber main body is connected so as to pass through the lower side located in the direction opposite to the upper side forming the waist opening, both ends of the lower side are more than the absorber main body. Disposable pants characterized in that leg edges for opening the legs are formed so as to be located outward and toward the side portions joined from the lower side ends. The both sides of the front abdomen and the back are joined, and the front and back ends of the absorbent body are connected to the front abdomen and the back to form a crotch, and the leg edges for opening the legs on the back It is a manufacturing method of disposable pants in which an elastic member is provided in the part,
After joining the rear end of the absorber main body so as to overlap the one side edge of the back band member, the one side edge of the back band member is separated from the absorber main body by a certain distance and cut into a substantially V shape. Forming a leg edge for opening the leg.

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