JP2005312689A - Manufacturing method of disposable pants - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing method of disposable pants capable of easily positioning a front belt part forming belt to an absorptive main body. <P>SOLUTION: The manufacturing method of the disposable pants comprises: a process of carrying an interior sheet belt 37 provided with a width dimension capable of covering the front part 3a to the rear part 3b of the absorptive main body 3 and an elastic member 7 attached to the front part along the longitudinal direction of the belt while imparting tension along a line direction and a belt width direction; a process of forming an oblong hole 39 set to an opening area capable of opening the almost entire area of the absorptive main body 3 to the interior sheet belt 37 so that its front part divides the elastic member 7; and a process of mounting the interior sheet belt 37 onto the absorptive main body 3 after positioning it such that each second hook material 12 and the front part of the interior sheet belt 37 can be fixed and the absorptive main body 3 is opened upwards through the oblong hole 39. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a method for manufacturing disposable pants.

  For example, as disclosed in Patent Document 1, a rear portion, an absorbent main body having a rear portion joined to the rear portion, and a pair of front belt portions extending from the rear portion to both sides in the width direction are worn. Disposable pants are known that can be worn as a form in which the front part of the absorbent main body folded back through the crotch is held on the front side with respect to the outer surface of the front belt part wound around the waist of the person.

  When manufacturing this kind of disposable pants, as shown in FIG. 16, the rear portion 102 a of the absorbent main body 102 is joined to the back portion forming band 101 being conveyed along the line direction, and this absorbability is also achieved. On the front part 102b of the main body 102, the front band part forming band 103 which is conveyed while being applied with tension along the line direction is placed, and the front band part forming band 103 and the back part forming band 101 are overlapped. In many cases, a step of folding the absorbent main body 102 so as to match is adopted.

  The front band forming band 103 is provided with an elastic member 103a along the longitudinal direction, and a notch 103b that opens in the width direction is formed.

For this reason, the disposable pants in the form of wearing have the elastic band 103a fit the front band part around the waist of the wearer and the front part 102b of the absorbent main body 102 through the notch part 103b on the skin side of the wearer. Can be opened.
JP 10-314227 A

  In the above manufacturing method, since the front band forming band 103 is divided in the longitudinal direction by the depth dimension of the notch 103b, each of the cuts is formed when tension is applied to the front band forming band 103. The free ends of the elastic member 103a divided between the notch portions 103b contracted in a direction close to each other, and as a result, the front band forming band 103 being conveyed contracted in the width direction.

  In the manufacturing method described above, in order to open the absorbent main body 102, it is necessary to position the notch 103b and the front portion 102b of the absorbent main body 102, but the front band portion contracted as described above. It was difficult to position the forming band 103.

  This invention is made | formed in view of the said subject, and it aims at providing the manufacturing method of the disposable pants which can position a front belt | band | zone part formation belt | band | zone easily with respect to an absorptive main body.

  In order to solve the above problems, the present invention includes a back part, a front part, an absorbent main body disposed across the back part and the front part, and a pair extending from the back part to both sides in the pants width direction. Can be fastened to the front side of the front side of each front band that is joined to the front side of the front abdomen and the front abdomen surface on both sides of the absorbent body in the width direction of the pants. A method for manufacturing a disposable pant having a fastening part, wherein a pair of perforations formed along the width direction of the band and the fastenings joined in pairs in the longitudinal direction of the band inside the perforations. The front part of the absorptive main body is joined between the front and rear band transporting steps for transporting the front abdomen forming band having the front part and the back part forming band along the line direction, and the fastening parts on the front abdomen forming band. And the absorptive body which joins the back part of this absorptive body on the back back formation belt And the interior sheet band having a width dimension capable of covering from the front part to the rear part of the absorbent main body and having an elastic member attached to the front part along the longitudinal direction of the band. An interior sheet belt transporting process that transports while applying tension along the line direction and the belt width direction, and a long hole set to an opening area capable of opening substantially the entire area of the absorbent main body, the front part of which is an elastic member A long hole forming step for forming the inner sheet band so as to divide, and a cutting line forming step for forming a cutting line along the band width direction at the front portion of the inner sheet band so as to be able to intersect with the long hole. And each fastening part and the front part of the interior seat belt can be fastened and positioned so that the absorbent main body is opened upward through the long hole, And a mounting step for mounting on the front abdomen forming band and the absorbent main body, and the interior An inner sheet belt joining step for joining the belt band to the back abdomen forming band and the front abdomen forming band in the range outside the two perforations, and both sides of the absorbent main body in the line direction with respect to the inner sheet band A leg hole forming step of forming a hole for a leg hole so as to overlap with the long hole and dividing the interior sheet band into a front band part forming band and a rear side interior sheet forming band. (Claim 1).

  The present invention also includes an exterior sheet in which a front abdomen and a back part are connected via a crotch part, an absorbent main body joined on the exterior sheet from the front part to the back part, and a pants width from the back part. A pair of front belt portions extending to both sides in the direction and the front abdomen with respect to the outer surface of each front belt portion joined to the front abdomen surface on both sides of the absorbent main body in the pants width direction and wound around the waist of the wearer A method of manufacturing a disposable pant having a fastening portion that can be fastened on the side, and a pair of perforations formed along the width direction of the band and a pair in the longitudinal direction of the band inside the perforations An outer sheet forming band conveying step for conveying the outer sheet forming band formed in a portion corresponding to the front abdomen along the line direction, and the front portion of the absorbent main body as each fixing portion. Remove the absorbent body in the position positioned between Absorbent body joining step for placing and joining on the sheet forming band, and having a width dimension capable of covering from the front part to the rear part of the absorbent body, and along the longitudinal direction of the band at the front part An interior sheet belt transporting process for transporting the interior sheet belt to which the elastic member is attached while applying tension along the line direction and the belt width direction, and an opening area capable of opening substantially the entire area of the absorbent main body. A long hole forming step for forming the set long hole with respect to the interior sheet band so that the front part divides the elastic member, and the band width at the front part of the interior sheet so as to be able to intersect with the long hole A cutting line forming step for forming a cutting line along the direction, each fastening part and the front part of the interior sheet belt can be fastened, and the absorbent main body is opened upward through the long hole After positioning, place the interior sheet band on the exterior sheet forming band An interior sheet band joining step for joining the interior sheet band to a step, a range on the exterior sheet corresponding to the back portion, and a range on the exterior sheet corresponding to the front abdomen that is outside each perforation, and the interior sheet Leg holes are formed on both sides of the absorbent main body in the line direction so as to overlap the long holes and the perforations, so that the interior sheet band is connected to the front band forming band and the back. And a leg hole forming step of dividing into a side interior sheet forming band (claim 2).

Furthermore, the present invention includes a back portion, a pair of front belt portions extending from the back portion to both sides in the pants width direction, an absorbent main body having a rear portion joined to the back portion, and a front surface of the absorbent main body. A pair of disposable pants having a fastening portion that can be fastened on the front side to the outer surface of each front belt portion that is joined in pairs at both ends in the width direction of the pants and wound around the waist of the wearer It is a manufacturing method, and a back portion forming belt transporting step for transporting the back portion forming belt along the line direction;
An absorptive main body joining step for mounting and joining the rear part of the absorbent main body to the rear back forming band being conveyed, and a width dimension capable of covering the front part to the rear part of the absorbent main body In addition, an interior sheet belt transporting process for transporting the interior sheet belt, to which an elastic member is attached along the longitudinal direction of the belt at the front portion, while applying tension along the line direction and the belt width direction, A long hole set to an opening area capable of opening substantially the entire region of the absorbent main body other than the region where the fastening portion is disposed is formed on the interior sheet belt so that the front portion divides the elastic member. A long hole forming step, a cutting line forming step for forming a cutting line along the band width direction in the front portion of the interior sheet so as to be able to cross the long hole, and each fastening portion and the front portion of the interior sheet belt So that the absorbent body can be opened upward through the long hole. After positioning, the placing step of placing the interior sheet band on the back portion forming band and the absorbent main body, the interior sheet band joining step for joining the interior sheet band to the back portion forming band, and the interior sheet band In contrast, legs for forming leg holes so as to overlap the elongated holes on both sides of the absorbent main body in the line direction, and dividing the interior seat belt into the front belt portion formation belt and the rear interior seat formation belt And a hole forming step. (Claim 3)

  In the manufacturing method of the disposable pants, in the cutting line forming step, a rear end portion arranged so as to be able to intersect with the long hole, and a front end portion terminating from the rear end portion on the rear side of the front end portion of the interior sheet belt, An interior sheet band cutting step in which an interior sheet band is cut along the longitudinal direction by the width of the band from the end position of the cutting line to the front end of the interior sheet. In addition, it is preferable that this interior sheet band cutting step is executed after the interior sheet joining step.

  According to the present invention, since the interior sheet band in which the long hole is formed is used, the outer portion of the long hole in the band width direction is supported and along the band width direction with respect to the interior sheet band. As a result of being able to apply tension, it is possible to prevent the interior sheet band from contracting in the band width direction by the elastic member.

  Therefore, in the present invention, since the interior sheet belt can be precisely positioned on each fastening part and each fastening part can be covered with the interior sheet belt, each fastening part is formed in the disposable pants after manufacture. It is possible to reliably prevent exposure to the skin surface side, and it is possible to manufacture disposable pants with a good wearing feeling.

  And in invention of Claim 1 and Claim 2, the disposable pants which can be worn through both legs like pants can be manufactured, and when developing this pants, both perforations are cut open, and each fastening part By separating the front band from the front band, the absorbent main body can be deployed to the back side through the crotch, and by further cutting the front band along the cutting line, the front band can be divided into the wearer's Can be deployed around the waist. When wearing again after deployment, each fastening part of the front abdomen can be fastened to the front belt part with the front belt part wrapped around the waist.

  Moreover, in the invention of claim 3, it is possible to manufacture disposable pants in which a portion corresponding to the front abdomen of each of the above inventions is omitted. That is, when deploying the disposable pants according to claim 3, the absorbent main body can be deployed to the back side through the crotch by peeling each fastening part from the front belt part, and further along the cutting line. By cutting open the front belt portion, the front belt portion can be divided and deployed around the wearer's waist. When wearing again after deployment, the front part of the absorptive main body can be fastened to these front belt parts with the front belt part wound around the waist.

  According to the manufacturing method including the inner sheet band cutting step, the non-installed portion of the cutting line can be left in the band width direction before the inner sheet band bonding step is executed, so that it can be used according to the tension during conveyance. While the inner sheet belt can be prevented from tearing along the cutting line, the cutting line continues from the long hole to the front end of the inner sheet band after the interior sheet band joining step. Therefore, it is possible to allow tearing of the front belt portion by the wearer.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.

  1 and 2 show a front view of the disposable pants 1, FIG. 1A is a state after manufacture, FIG. 1B is a state in which the front part of the absorbent main body is unfolded, FIG. ) Shows a state where the front belt part on one side is developed, and (b) shows a state where the front belt part on both sides is developed.

  The disposable pant 1 includes a pant body 2 having a front abdomen 4 and a back part 5, and an absorbent body 3 disposed across the front abdomen 4 and the back part 5. In the following description, the end side of the absorbent main body 3 developed as shown in FIG.

  The pant body 2 includes the front abdomen 4 and the back part 5, and a front belt part 6 joined to the back part 5.

  The front belt portion 6 is a belt-like member whose both sides are joined to the back portion 5 by the side seal 2a in the state after manufacture (the state of FIG. 1A). As shown in FIG. 3, an elastic member 7 is attached between the inner sheet S <b> 1 and the outer sheet S <b> 2 of the front belt portion 6 in a stretched state along the pants width direction.

  Further, the front belt portion 6 has an arc-shaped notch 6a that opens forward at the center and penetrates in the thickness direction, and a cutting line 6b that extends rearward from the apex portion of the arc-shaped notch 6a. The first loop material 8 of the mechanical fastener that is formed and joined along the front belt portion 6 and the rear edge portion thereof is developed from the state shown in FIG. 1 to the state divided as shown in FIG. To get.

  Further, a first tab 9 is disposed on the front belt portion 6 across the cutting line 6b. The first tab 9 has one end joined to the front belt portion 6 on the right side (right side as viewed from the wearer), and the first hook material 10 of a mechanical fastener is attached to the back surface of the other end portion. It is joined. Therefore, when the first hook member 10 is detachably fastened to the first loop member 8 on the left side (left side as viewed from the wearer), the wearer wears the front belt portion 6 once deployed. It can hold | maintain with the form wound around the trunk | drum.

  The front abdomen 4 is a band-shaped member that is disposed outside the front belt part 6 and joined to the back part 5 by the side seal 2a in the state after manufacture. A pair of perforations 11 are formed along the front-rear direction.

  A second hook material (fastening portion) 12 of a mechanical fastener and a second tab 13 that are paired in the width direction of the pants are provided at an inner position of each perforation 11 of the front abdomen 4. The second hook member 12 is formed in two pairs at the front part of the front abdomen 4 and is fixed to the first loop member 8 so as to be peelable, thereby holding the front abdomen 4 on the front belt part 6. . In the present embodiment, a pair of second hook members 12 are formed on both sides of the absorbent main body 3 in the pants width direction, and another pair of second hook members 12 are formed on the front side of the absorbent main body 3.

  Specifically, as shown in FIG. 3, the front abdominal part 4 is fastened to the front belt part 6 so that the part between the perforations 11 can be peeled off from the front belt part 6 by the second hook material 12 in the form after manufacture. On the other hand, the outer part of each perforation 11 is joined to the front belt part 6 by the joint part 14. Further, as shown in FIG. 1, the front abdomen 4 can be peeled from the front belt part 6 by a temporary joint part M between the two perforations 11 and the respective second hook members 12 in the form after manufacture. It is joined to.

  Therefore, by removing the front abdomen 4 along each perforation 11 while peeling off the temporary joint portion M, the disposable pants 1 can be removed from the state of FIGS. 1 (a), 3 and 4 as shown in FIG. 6 and 7 can be developed.

  On the other hand, the second tab 13 is formed in a pair at the rear of each second hook member 12 and includes a strip-shaped knob portion 13a and a third hook member 13b of a mechanical fastener joined to the knob portion 13a.

  As shown in FIG. 5, each knob 13 a has one end joined to the inner sheet S <b> 3 of the front abdomen 4, and the third hook member 13 b is joined to the other end surface. The knob 13a is folded in half with the third hook member 13b inside. And after the front abdominal part 4 expand | deployed along each said perforation 11, the other end part of each knob | pick part 13a can mutually be expand | deployed outside each other like FIG. 4 is fastened to the front belt portion 6, the leg hooks K [(a of FIG. 1 (a)] are attached by fastening the third hook members 13b to the front abdomen 6 while pulling the knobs 13a outward. ) Reference] can be narrowed down.

  Here, with the mechanical fastener, when the hook part and the loop part make a pair and strongly press both, the hook part and the loop part are locked so that they are not easily detached from each other, and the hook part and the loop part When it is strongly peeled off by hand, the hook part and the loop part are disengaged. This is also called a hook-and-loop fastener. In addition, since the function of a hook part can also be substituted with a nonwoven fabric material, the 1st loop material 8 can also be abbreviate | omitted by forming the said front belt | band | zone part 6 with a nonwoven fabric material.

  1, 3, and 4, the first front waist elastic member 15 on the rear side (the wearer's waist side) is located on the outer side of each perforation 11 of the front abdomen 4, and the front side. A plurality of front body-fit elastic members 16 are attached in the stretched state along the width of the pants between the inner sheet S3 and the outer sheet S4, respectively (on the wearer's abdomen side). The first front waist elastic member 15 is preferably configured to have a contraction force larger than that of the front body fit elastic member 16.

  On the other hand, a plurality of second waist elastic members 17 are stretched along the pants width direction between the inner sheet S3 and the outer sheet S4 at positions between the perforations 11 of the front abdomen 4. Yes. The second waist elastic member 17 is disposed on the front side of the front portion 3a of the absorbent main body 3 so that the stretching force does not function at the position in the pants width direction corresponding to each second hook member 12. Has been weakened.

  In addition, when attaching the elastic member 15 for the first front waist and the elastic member 17 for the second waist, a method of attaching both the elastic members 15 and 17 for the waist separately may be used. On the other hand, a continuous elastic member is attached, and the elastic member is weakened to divide the elastic member into a second waist elastic member 17 and a first front waist elastic member 15. It can also be done.

  The back portion 5 is formed with a pair of notches K1 on both front sides, and in the form after manufacture, leg holes K are formed between these notches K1, both sides of the absorbent main body 3, and the front abdomen 4. It is like that.

  2 (b) and 8, the leg elastic member 18, the rear body fit elastic member 19, and the rear waist are arranged between the inner sheet S5 and the outer sheet S6 of the back portion 5 in order from the front. The elastic members 20 are attached in an extended state along the pant width direction.

  The leg elastic member 18 is curvedly disposed along the edge and front edge of the notch K1 of the back portion 5 so that the contraction force does not function at the position where the absorbent main body 3 is joined. Weakening treatment is applied.

  The rear waist elastic member 20 is preferably configured to have a contraction force larger than that of the rear body fit elastic member 19, and the rear body fit elastic member 19 is joined to the rear portion 3b of the absorbent main body 3. A weakening process is applied to the portion to be applied so that the contraction force does not function.

  Referring to FIG. 2B and FIG. 8, a cover sheet 21 and a back interior sheet 22 are further joined to the inner sheet S <b> 5 of the back portion 5.

  The covering sheet 21 is joined to the absorbent main body 3 with the front end portion covering the rear end portion of the absorbent main body 3, while the rear end portion of the outer sheet S6 is folded inward. And the inner sheet S5.

  The rear interior sheet 22 is formed with a rectangular notch 22a that opens forward and penetrates in the thickness direction. The edge of the rectangular notch 22a is between the rear edge of the absorbent main body 3 and the inner sheet S5. It is bonded to the absorbent main body 3 and the covering sheet 21 with the covering sheet 21 sandwiched therebetween.

  Referring to FIG. 8, the absorbent main body 3 is configured by sandwiching an absorbent core 25 between a liquid permeable top sheet 23 and a liquid impermeable back sheet 24, and a front portion 3 a of the front abdominal portion 4. While being joined to the inner sheet S <b> 3 by the joining portion 26, the rear portion 3 b is joined to the inner sheet S <b> 5 of the back portion 5 by the joining portion 27. As shown in FIG. 2B, the absorbent core 25 is formed in an hourglass shape having a wide front and rear side and a narrow middle part, and this mid part is a crotch part 44 of the disposable pants 1 (see FIG. 2). ).

  Referring to FIGS. 2, 4, and 5, the top sheet 23 stands on the edge 24 a of the back sheet 24 that is raised upward so as to contain the absorbent core 25 and bent inward in the width direction of the pants. It is joined on both sides in the width direction of the pants through the joint portion 28.

  In addition, the absorbent main body 3 is provided with a pair of water-repellent and / or liquid-impermeable side sheets 29 extending in the front-rear direction in the pants width direction. 24a and the top sheet 23 are joined to each other via joints 30 and 31, respectively. The three-dimensional gathers rise above the top sheet 23 by the contraction force of the three-dimensional elastic member 33 attached to the inner end of the extended portion sealed with 32.

  By this three-dimensional gather, excretion such as urine flowing on the surface of the top sheet 23 can be received, and even when the wearer is lying sideways, the side leakage preventing effect is exhibited.

  Further, leg elastic members 34 are attached to the side edges of the absorbent main body 3 in the width direction of the pants between the back sheet 24 and the absorbent core 25 in an extended state along the front-rear direction. The absorbent main body 3 is fitted to the wearer's crotch by the elastic member 34 for use.

  Hereinafter, the manufacturing method of the said disposable pants 1 is demonstrated with reference to FIGS.

  In the production line of the disposable pants 1, the processing is sequentially advanced along the main line PH that conveys the back portion forming band 35 along the line direction.

  Specifically, in the main line PH, an absorbent main body joining section X1, an interior sheet band joining section X2, a leg hole forming section X3, a folding section X4, a side seal section X5, and a cut section X6 are set in order from the upstream side. Yes.

  In the absorptive main body joint section X1, the front abdomen formation band 36 is conveyed along the line direction in parallel with the back portion formation band 35 (front and rear band conveyance process). Moreover, the already manufactured absorbent main body 3 is conveyed to the absorbent main body joining section X1 in a posture in which the longitudinal direction is aligned with the line direction.

  The leg elastic member 18, the rear body fit elastic member 19, and the rear waist elastic member 20 are attached to the back portion forming band 35 before being transported to the absorbent main body joining section X 1. On the other hand, each perforation 11, each second hook material 12, and each second tab 13 are formed in the front abdomen formation band 36, and the first and second front waist elastic members 15, 17 and the front A body fitting elastic member 16 is attached.

  In addition, the elastic member 20 for back waists can also be attached with respect to the back part formation belt | band | zone 35 in the section (for example, joining section X2) after the said absorption section X1.

  And in the absorptive main body junction section X1, the absorptive main body 3 currently conveyed is rotated 90 degrees. Next, the front portion 3a of the absorbent main body 3 is disposed between the second hook members 12 and the second tabs 13 so as not to overlap the second waist elastic member 17, while the rear portion 3b of the absorbent main body 3 is disposed. In the state where the weakening treatment of the leg elastic member 18 and the rear body fit elastic member 19 is performed, the absorbent main body 3 is placed on the back back forming band 35 and the front abdomen forming band 36. Then, these are joined (absorbent main body joining step).

  In the interior sheet band joining section X2, the width dimension (from the front part 3a of the absorbent main body 3 to the rear part is slightly larger than the distance from the rear end part of the rear part forming band 35 being conveyed to the front end part of the front abdomen forming band 36. The interior sheet band 37 having a width dimension capable of covering up to 3b) is conveyed along the line direction in a state where tension is applied along the line direction and the band width direction (interior sheet band conveyance step). .

  The interior sheet band 37 is subjected to a pre-process as shown in FIG. 11 at a stage before being conveyed to the interior sheet band joining section X2.

  In this pre-process, first, the surplus part cutting line 37a is formed along the longitudinal direction at the front position of the elastic member 7 with respect to the interior sheet band 37 to which the elastic member 7 is attached. Next, the first loop material 8 is joined to a position behind the surplus portion cutting line 37 a on the interior sheet band 37, and the cutting line along the band width direction with respect to the interior sheet band 37 and the first loop material 8. 6b is formed (cutting line forming step). At this time, the cutting line 6b is formed at a position where the first loop material 8 can be divided into two equal parts in the line direction.

  Further, in the cutting line forming step, a rear end portion 38a disposed in the middle of the band width direction so as to be able to intersect with a long hole 39 described later, and a front end portion extending from the rear end portion to the surplus portion cutting line 37a. A cutting line 6b with 38b is formed.

  And the 1st tab 9 is arrange | positioned on the 1st loop material 8 so that this cutting line 6b may be straddled, and while one end part of this 1st tab 9 is joined to the 1st loop material 8, 1st tab 9 One hook material 10 is fixed to the first loop material 8.

  Next, a long hole 39 is formed in the interior sheet band 37 along the band width direction (long hole forming step). The long holes 39 formed in the long hole forming step are rearward from both ends of a front arc portion (corresponding to the arc-shaped notch 6a after manufacture) 39a at substantially the same interval as the width dimension of the absorbent main body 3. The extending pair of side portions 39b have an opening shape connected by a rear side 39c parallel to the longitudinal direction of the belt, and the opening area is set to an area that can open substantially the entire area of the absorbent main body 3. .

  Specifically, the long hole 39 is disposed immediately above the absorbent main body 3 as a result of the distance from the apex portion of the arc portion 39a to the rear side 39c being substantially the same as the length of the absorbent main body 3. In this case, in the state where the second hook member 12 and the second tab 13 are covered with the edge of the arc portion 39a, the substantially entire area of the absorbent main body 3 excluding a part of the front portion 3a is opened.

  In the long hole forming step, the long hole 39 is formed in the interior sheet belt 39 in a state where the apex portion of the arc portion 39a is positioned so as to contact or intersect the rear end portion 38a of the cutting line 6b. Yes.

  Referring to FIG. 9 again, in the interior sheet band joining section X2, the second hook member 12 and the interior sheet band 37 can be fastened, and the absorbent main body 3 is opened upward through the long hole 39. Then, the interior sheet band 37 is placed on the back portion forming band 35, the front abdomen forming band 36, and the absorbent main body 3 (placement step). In this placing step, the interior sheet belt 37 is placed after the front and back are reversed from the state of the previous step in FIG.

  In the above placing step, the rear end portion of the interior sheet band 37 and the rear end portion of the rear portion forming band 35 are arranged so as to overlap each other. A portion in front of the line 37a protrudes forward from the front abdomen formation band 36.

  Next, in the interior sheet band joining section X2, the interior sheet band 37 is joined to the back part forming band 35 and the front abdomen forming band 36 in a range outside the two perforations 11 (interior sheet band joining step). In the interior sheet band joining step, a temporary joint portion M (see FIG. 1) is also formed between the front abdomen forming band 36 and the interior sheet band 37 at the same time.

  Therefore, in the interior sheet band joining section X2, the interior sheet 37 is fixed in a state of being positioned with respect to the back portion forming band 35 and the front abdomen forming band 36.

  In the leg hole forming section X3, the hole 40 for the leg hole is formed on the both sides of the absorbent main body 3 in the line direction so as to overlap the long hole 39 with respect to the interior sheet band 37, and the interior sheet band 37 is attached to the front band. It divides | segments into the part formation belt | band | zone 41 and the back side interior sheet formation belt | band | zone 42 (leg hole formation process).

  In this leg hole forming step, the back portion forming band 35 is also cut at the same time as the interior sheet band 37, and a notch K <b> 1 is formed in the back portion forming band 35.

  Further, in the leg hole forming step, by forming the hole 40 for the leg hole, the long hole 39 is formed into the arc-shaped notch 6a of the front band part forming band 41 and the rectangular notch of the rear interior sheet forming band 42. It will be divided into 22a.

  Furthermore, in the said leg hole formation section X3, the front belt | band | zone part formation band 41 is cut | disconnected along the surplus part cutting line 37a (interior sheet band cutting process), and the cutting line 6b is the band width direction of the front band part formation band 41 In other words, the front band forming band 41 can be divided along the band width direction.

  Referring to FIG. 10, in the folding section X4, the absorbent main body 3 is folded so that the rear end portion of the back portion forming band 35 and the front end portion of the front abdominal portion forming band 36 are overlapped.

  In the side seal section X5, the overlapped back portion forming band 35 and the front abdominal portion forming band 36 are placed outside the two perforations 11 with the front band portion forming band 41 and the back interior sheet forming band 42 sandwiched therebetween. Join.

  In the cut section X6, the bands 35, 36, 41, 42 are cut outside the joined portions 43 to produce the disposable pants 1 in which the side seals 2a are formed on both sides in the pants width direction.

  In the manufacturing method described above, the disposable pants 1 having the front part 4 and the back part 5 separately are manufactured. However, the present invention is not limited to this. For example, the disposable pants 1 shown in FIG. The pants 51 can also be manufactured. In addition, about the structure similar to the said disposable pants 1, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  The disposable pants 51 are different from the above-described embodiment in that the front part and the back part are integrally formed.

  Specifically, the disposable pants 51 are joined to both sides in the pants width direction with respect to the exterior sheet 56 in which the front abdomen 54 and the back part 55 are connected via the crotch part 53 and the back part 55 of the exterior sheet 56. The pants main body 52 having the front belt part 6 and the absorbent main body 3 joined on the exterior sheet 56 from the front abdomen 54 to the back part 55 are provided.

  Hereinafter, the manufacturing method of the said disposable pants 51 is demonstrated with reference to FIG.

  In the production line of the disposable pants 51, the exterior sheet forming band 57 is conveyed along the line direction (exterior sheet forming band conveying step). The processing is sequentially advanced along the main line PH2.

  Specifically, in the main line PH2, an absorbent main body joining section Y1, an interior sheet belt joining section Y2, a leg hole forming section Y3, a folded section, a side seal section, and a cut section are set in order from the upstream side. In the following sections, the same steps as those in FIG. 10 described above are performed, and thus description of these sections is omitted.

  The absorbent main body 3 is transported along the line direction to the absorbent main body joining section Y1 as in the above embodiment. In addition, the outer sheet forming band 57 includes the leg elastic member 18, the rear body fit elastic member 19, the rear waist elastic member 20, the first and second front parts before being transported to the absorbent main body joining section Y1. Waist elastic members 15 and 17 and front body fit elastic member 16 are attached, and each perforation 11, each second hook material 12, and each second tab 13 are formed.

  In the present embodiment, each perforation 11 is formed to extend from the front end portion of the exterior sheet forming band 57 to a formation range of a leg hole 58 described later.

  And in the absorptive main body joining section Y1, the absorptive main body 3 being conveyed is rotated by 90 °, and the front part 3a of the absorptive main body 3 is moved between the second hook members 12 and the second tabs 13 in the first. While arranged at a position that does not overlap the two-waist elastic member 17, the rear portion 3b of the absorbent main body 3 is arranged in a portion subjected to the weakening treatment of the leg elastic member 18 and the rear body fit elastic member 19, The said absorptive main body 3 is mounted on the exterior sheet | seat formation band 57, and the exterior sheet | seat formation band 57 and the absorptive main body 3 are joined (absorbent main body joining process).

  In the interior sheet band joining section Y2, the interior sheet band 37 formed wider than the width dimension of the surplus portion cutting line 37a is wider than the width dimension of the exterior sheet forming band 57 being conveyed. It is conveyed along the line direction with tension applied along the width direction (interior sheet belt conveying step). The interior sheet band 37 is conveyed to the interior sheet band joining section Y2 after the pre-process shown in FIG. 11 described above is performed.

  In the interior sheet band joining section Y2, the second hook material 12 and the interior sheet band 37 can be fastened, and the absorbent main body 3 is positioned so as to be opened upward through the long hole 39. The interior sheet band 37 is placed on the exterior sheet forming band 57 (placement step).

  Next, in the interior sheet band joining section Y2, the interior sheet band 37 is joined to the exterior sheet forming band 57 in a range corresponding to the back portion 55 in the band width direction, and the exterior sheet corresponding to the front abdomen 54 in the band width direction. In the range on the formation band 57, it joins with respect to the range outside the two perforations 11 (interior sheet band joining step). In the interior sheet band joining step, a temporary joint portion M (see FIG. 12) is also formed between the front abdomen 54 and the interior sheet band 37 at the same time as in the above embodiment.

  Therefore, in the interior sheet band joining section Y2, the interior sheet 37 is fixed in a state of being positioned with respect to the exterior sheet forming band 57.

  In the leg hole forming section Y3, leg holes 58 are formed so as to overlap the rear holes of the long holes 39 and the perforations 11 on both sides of the absorbent main body 3 (the crotch portion 53) in the line direction with respect to the interior sheet 37. The interior sheet band 37 is divided into a front band part forming band 41 and a rear side interior sheet forming band 42 (leg hole forming step).

  In this leg hole forming step, the exterior sheet forming band 57 is cut simultaneously with the interior sheet band 37 to form a notch K2 (see FIG. 12) with respect to the exterior sheet forming band 57. The sheet forming band 57 is partitioned into a front abdomen 54, a back part 55, and a crotch part 53.

  Further, in the leg hole forming step, by forming the leg hole 58, the two perforations 11 are continuous between the front end of the exterior sheet forming band 57 and the leg hole 58, that is, The portion corresponding to the front abdomen 54 of the exterior sheet 57 can be divided along the front-rear direction.

  Furthermore, in the said leg hole formation section Y3, the front belt | band | zone part formation band 41 is cut | disconnected along the surplus part cutting line 37a (interior sheet band cutting process), and the cutting line 6b is the band width direction of the front belt part formation band 41 And let it be in a continuous state.

  Then, the disposable pants 51 are manufactured by sequentially executing the folded section, the side seal section, and the cut section as in the above embodiment.

  Moreover, the disposable pants 61 as shown in FIG. 14 can also be manufactured using the said manufacturing method. In addition, about the structure similar to the said disposable pants 1, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  The disposable pants 61 are different from the configuration of the disposable pants 1 in that the configuration corresponding to the front abdomen is omitted.

  Specifically, the disposable pants 61 include a back part 5, a front belt part 6 joined to both sides in the pants width direction from the back part 5, and an absorbent main body 3 in which a rear part 3b is joined to the back part 5. The front side 3a of the absorbent main body 3 is joined in pairs at both ends in the width direction of the pants and can be fastened on the front side with respect to the outer surface of the front band 6 wound around the wearer's waist. And a second hook material 62 (fastening portion).

  In the present embodiment, the second hook members 62 are arranged in two pairs in the front-rear direction, and a second tab 63 is provided on the front portion 3 a of the absorbent main body 3 behind the second hook members 62. They are joined in pairs in the width direction. Since these second tabs 63 have the same configuration as the second tab 13, the description thereof is omitted here.

  In addition, a plurality of second waist elastic members 64 are provided in the front portion 3a of the absorbent main body 3 of the disposable pants 61 in the width direction of the pants instead of the second waist elastic members 17 of the above embodiments. It is attached in an extended state. These second waist elastic members 64 are subjected to a weakening process so that the portions to be joined to the respective second hook members 62 do not function in the stretching force.

  Hereinafter, the manufacturing method of the said disposable pants 61 is demonstrated with reference to FIG.

  In the production line of the disposable pants 61, the back portion forming band 35 is conveyed along the line direction (rear portion forming band conveying step). The processing is sequentially advanced along the main line PH3.

  Specifically, in the main line PH3, an absorbent main body joining section Z1, an interior sheet band joining section Z2, a leg hole forming section Z3, a folded section, a side seal section, and a cut section are set in order from the upstream side. In the following sections, the same steps as those in FIG. 10 described above are executed, and thus description of these sections is omitted.

  The absorbent main body is transported along the line direction to the absorbent main body joining section Z1 as in the above embodiments. Further, the leg elastic member 18, the rear body fit elastic member 19, and the rear waist elastic member 20 are attached to the back portion forming band 35 before being transported to the absorbent main body joining section Z1.

  And in the absorptive main body junction section Z1, the absorptive main body 3 currently conveyed is rotated 90 degrees. Next, the rear portion 3b of the absorbent main body 3 is formed in the back portion in a state where the rear portion 3b of the absorbent main body 3 is disposed in the weakened portions of the leg elastic member 18 and the rear body fit elastic member 19. They are placed on the band 35 and joined together (absorbing main body joining step).

  In the interior sheet joining section Z2, the interior sheet band 37 having a width dimension slightly larger than the distance from the rear end portion of the rear back portion forming band 35 being conveyed to the front end portion of the absorbent main body 3 includes the line direction and the band width. It is conveyed along the line direction in a state where tension is applied along the direction (interior sheet belt conveying step). The interior sheet band 37 is conveyed to the interior sheet band joining section Z2 after the pre-process shown in FIG. 11 described above is performed.

  In the present embodiment, the long hole 39 formed in the previous step has a result that the distance from the apex portion of the arc portion 39a to the rear side 39c is substantially the same as the length dimension of the absorbent main body 3. In the state where the second hook member 62 and the second tab 63 are covered with the edge of the arc portion 39a when the absorbent main body 3 is disposed immediately above the absorbent main body 3, the absorbent main body 3 except for a part of the front portion 3a is covered. Almost the entire area will be opened.

  Then, in the interior sheet band joining section Z2, the second hook member 62 and the interior sheet band 37 can be fastened, and the absorbent main body 3 is positioned so as to be opened upward through the long hole 39. The interior sheet band 37 is placed on the back portion forming band 35 (placement process).

  Next, in the interior sheet band joining section Z2, the interior sheet band 37 is joined to the back portion forming band 35 (interior sheet band joining step). In this interior sheet strip joining step, a temporary joint portion M1 (see FIG. 14) is also formed between the front portion 3a of the absorbent main body 3 and the interior seat strip 37 at the same time. This temporary joining part M1 joins the top sheet 23 and the interior sheet 37 of the absorptive main body 3 so that peeling is possible.

  Therefore, in the interior sheet band joining section Z2, the interior sheet 37 is fixed in a state of being positioned with respect to the back portion forming band 35.

  In the leg hole forming section Z3, holes 65 for leg holes are formed on both sides of the absorbent main body 3 in the line direction with respect to the interior sheet band 37 so as to overlap the long holes 39, and the interior sheet 37 is It divides | segments into the part formation belt | band | zone 41 and the back side interior sheet formation belt | band | zone 42 (leg hole formation process).

  In this leg hole forming step, the back portion forming band 35 is also cut at the same time as the interior sheet band 37, so that a notch K <b> 1 is formed in the back portion forming band 35.

  Further, in the leg hole forming section Z3, the front band forming band 41 is cut along the marked upper cutting line 37a (interior sheet band cutting step), and the cutting line 6b is cut in the band width direction of the front band forming band 41. And let it be in a continuous state.

  Then, the disposable pants 61 are manufactured by sequentially executing the folded section, the side seal section, and the cut section as in the above embodiment.

  As described above, according to each of the above manufacturing methods, the interior sheet band 37 in which the long holes 39 are formed is used, so that the interior sheet is supported by supporting the outer portion of the long holes in the band width direction. As a result of being able to apply tension to the band 37 along the width direction, it is possible to prevent the interior sheet band from contracting in the band width direction by the elastic member 7.

  Therefore, in each of the above manufacturing methods, the interior sheet belt 37 can be precisely positioned on the second hook members 12 and 62, and the second hook members 12 and 62 can be covered with the interior sheet belt 37. In the disposable pants 1, 51, 61 after manufacture, it is possible to reliably prevent the second hook members 12, 62 from being exposed to the skin surface side, and the disposable pants 1, 51, 61 having a good wearing feeling. Can be manufactured.

  Moreover, according to each said manufacturing method which performed the interior sheet strip cutting process, in the stage before performing an interior sheet strip joining process, the non-installation part (namely, surplus part) of the cutting line 6b in a strip width direction Since the front portion of the cutting line 37a can be left), it is possible to prevent the inner sheet band 37 from tearing along the cutting line 6b according to the tension at the time of conveyance. After the execution of the process, since the cutting line 6b is continuous between the long hole 39 and the front end of the interior sheet band 37, it is possible to allow tearing of the front band 6 by the wearer.

  Hereinafter, the constituent materials of each of the above members will be briefly described.

[Top sheet 23]
A hydrophilic (liquid permeable) nonwoven material is preferred. For example, non-woven materials using hydrophilic fibers (cellulose, rayon, cotton, etc.) or non-woven materials made hydrophobic by treating the surface of hydrophobic fibers (polypropylene, polyester, polyamide, nylon, etc.) with a surfactant. Is used. Preferably, it is a liquid-permeable nonwoven fabric material (point bond nonwoven fabric, air-through nonwoven fabric) having a basis weight of 10 to 35 g / m ² which is treated with a surfactant to make the hydrophobic fiber back surface liquid-permeable.

[Back sheet 24]
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 is preferably a breathable plastic film) and its Composite materials are used. A breathable polyethylene film having a basis weight of 15 to 50 g / m ² is preferable.

[Absorption core 25]
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 is wrapped with a paper sheet such as tissue paper or a covering sheet such as a liquid-permeable nonwoven sheet, and a predetermined content. Absorber molded into a shape (rectangular, hourglass, gourd, 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 formed into a predetermined shape and used. 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.

[Side seat 29]
In the case of hydrophilicity, the same nonwoven material as the top sheet 23 is preferable. In the case of water repellency, a nonwoven material similar to the backsheet 24 is preferable.

[Elastic members 7, 15, 16, 17, 18, 19, 20, 33, 34]
Elastic stretchable materials (polyurethane yarn, polyurethane film, natural rubber, etc.) usually used for disposable diapers are used, and are attached by suitable attachment means such as hot melt adhesive, thermal bonding, ultrasonic bonding. A rubber-based hot melt adhesive is preferable. Further, it is preferable to attach a polyurethane yarn having a fineness of 300 to 2000 dtex to a magnification of 1.1 to 5.0 times.

[Inner sheets S1, S3, S5]
Water-repellent nonwoven materials (spunbond nonwoven fabric, melt blown nonwoven fabric, SMS nonwoven fabric, etc.) are used. Preferably, it is a water-repellent nonwoven material having a basis weight of 10 to 35 g / m ² . Alternatively, only the inner surface may be hydrophilized (surfactant is applied or a layer of hydrophilic fibers (rayon, cotton, etc.) is formed. In this case, the touch when touching the skin is improved. Also, sweat absorption effect can be expected.

[Outer sheets S2, S4, S6]
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 35 g / m ² .

[Pick part 13a, first tab 9]
It can be appropriately selected from nonwoven materials, woven materials, knitted fabric materials, and plastic materials. Especially, the nonwoven fabric material manufactured by the spun bond method, the air through method, the point bond method, the melt blow method, the airlaid method, the combination of those manufacturing methods, etc. is preferable. Furthermore, the nonwoven fabric material by the spun bond method of 30-100 g / m < ² > of fabric weight or the SMS method which combined the spun bond method and the melt blow method is preferable from the point of intensity | strength. Most preferred is a nonwoven material produced by a spunbond method having 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 polyester fiber as the main component have strength and are suitable. Most preferred is polyester fiber.

  And it is preferable that the knob | pick part 13a and the 1st tab 9 are things which are easy to pick and are hard to fracture | rupture.

[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 seals.

It is a front view of the disposable pants which concern on embodiment of this invention, (a) is the state after manufacture, (b) has each shown the state which expand | deployed the front part of the absorptive main body. It is a front view of the disposable pants of FIG. 1, (a) has shown the state which expand | deployed the front belt part of one side, (b) has each shown the state which expand | deployed the front belt part of both sides. It is the III-III sectional view taken on the line of Fig.1 (a), and the back part is abbreviate | omitted. It is the IV-IV sectional view taken on the line of Fig.1 (a), and the back part is abbreviate | omitted. It is the VV sectional view taken on the line of FIG.1 (b). It is the VI-VI sectional view taken on the line of FIG.1 (b). It is the VII-VII sectional view taken on the line of FIG.1 (b). It is the VIII-VIII sectional view taken on the line of FIG.2 (b). It is a perspective view which shows the manufacturing method of the disposable pants of FIG. It is a perspective view which shows the manufacturing method of the disposable pants of FIG. 1, and shows the section after FIG. It is a perspective view which shows the pre-process with respect to the interior sheet belt utilized for the manufacturing method of FIG. It is a front view of the disposable pants which concern on this invention, (a) has shown the state after manufacture, (b) has each shown the state after expansion | deployment. It is a perspective view which shows the manufacturing method of the disposable pants of FIG. It is a front view of the disposable pants which concern on this invention, (a) has shown the state after manufacture, (b) has each shown the state after expansion | deployment. It is a perspective view which shows the manufacturing method of the disposable pants of FIG. It is a top view which shows the manufacturing method of the conventional disposable pants.

Explanation of symbols

1, 51, 61 Disposable pants 3 Absorbent body 4, 54 Front abdomen 5, 55 Rear back part 6 Front belt part 6b Cutting line 7 Elastic member 11 Perforation 12, 62 Second hook material 35 Rear back part formation band 36 Front abdomen formation Band 37a Excess portion cutting line 39 Long hole 40, 58, 65 Hole for leg hole 44, 53 Crotch portion 57 Outer sheet forming band

Claims (4)

A back part, a front part, an absorptive main body arranged across these back parts and a front part, a pair of front belt parts extended from the back part to the both sides of the underpants width direction, and absorption in the underpants width direction Of disposable pants having a fastening part that can be fastened on the front side to the outer surface of each front belt part that is joined to the front part of the front part of the body and wound around the waist of the wearer A method,
A front abdomen forming band having a pair of perforations formed along the band width direction and a fastening portion joined in pairs in the longitudinal direction of the band inside the perforation; and a back part forming band Front and rear belt transporting process for transporting along the line direction;
While joining the front part of an absorptive main body between each fastening part on a front abdomen formation belt, the absorptive main body joining process of joining the rear part of this absorptive main body on a back back formation belt,
The interior sheet band having a width dimension capable of covering from the front part to the rear part of the absorbent main body and having an elastic member attached to the front part along the longitudinal direction of the band is the line direction and the band. An interior sheet belt conveying step of conveying while applying tension along the width direction;
A long hole forming step for forming a long hole set in an opening area capable of opening substantially the entire region of the absorbent main body with respect to the interior sheet band so that the front portion divides the elastic member;
A cutting line forming step for forming a cutting line along the band width direction at the front portion of the interior sheet band so as to be able to cross the long hole,
After positioning each fastening part and the front part of the interior seat belt so that they can be fastened and the absorbent main body is opened upward through the long hole, the interior seat belt is moved to the rear part forming belt and the front part. A placement step of placing on the abdomen forming band and the absorbent body;
An interior sheet band joining step of joining the interior sheet band to the back abdomen forming band and the front abdomen forming band in a range outside both perforations;
Leg holes are formed on the both sides of the absorbent main body in the line direction so as to overlap with the long holes, so that the interior sheet belt can be divided into a front belt section forming belt and a back interior sheet forming belt. The manufacturing method of the disposable pants characterized by including the leg hole formation process to divide | segment. An exterior sheet in which a front abdomen and a back part are connected via a crotch part, an absorbent main body joined on the exterior sheet from the front part to the back part, and a pair extending from the back part to both sides in the pants width direction Can be fastened to the front side of the front side of each front band that is joined to the front side of the front abdomen and the front abdomen surface on both sides of the absorbent body in the width direction of the pants. A method for producing a disposable pants comprising a fastening part,
Forming an exterior sheet in which a pair of perforations formed along the band width direction and fastening portions joined in pairs in the longitudinal direction of the band inside the perforations are formed in a portion corresponding to the front abdomen An outer sheet forming belt conveying step for conveying the belt along the line direction;
An absorbent main body joining step in which the front of the absorbent main body is positioned between the fastening portions, and the absorbent main body is placed on the exterior sheet forming band and joined;
The interior sheet band having a width dimension capable of covering from the front part to the rear part of the absorbent main body and having an elastic member attached to the front part along the longitudinal direction of the band is the line direction and the band. An interior sheet belt conveying step of conveying while applying tension along the width direction;
A long hole forming step for forming an elongated hole set to an opening area capable of opening substantially the entire region of the absorbent main body with respect to the interior sheet band so that the front portion divides the elastic member;
A cutting line forming step of forming a cutting line along the band width direction at the front portion of the interior sheet so as to be able to intersect with the long hole,
After positioning each fastening part and the front part of the interior sheet belt so that the absorbent body can be opened upward through the long hole, the interior sheet belt is moved onto the exterior sheet formation belt. A mounting process for mounting;
An interior sheet band joining step for joining the interior sheet band to the range on the exterior sheet corresponding to the back and the range on the exterior sheet corresponding to the front abdomen that is outside each perforation;
For the interior sheet band and exterior sheet forming band, the holes for leg holes are formed on both sides of the absorbent main body in the line direction so as to overlap the perforations, and the interior sheet band is formed as the front band part forming band. And a leg hole forming step of dividing into a back side interior sheet forming band. A back part, a pair of front belt parts extending from the back part to both sides in the width direction of the pants, an absorbent main body having a rear part joined to the back part, and both ends of the front part of the absorbent body in the width direction of the pants A method of manufacturing disposable pants comprising a fastening part that can be fastened on the front side with respect to the outer surface of each front belt part joined in pairs and wound around the waist of the wearer,
A back portion forming band transporting step for transporting the back portion forming band along the line direction;
An absorptive body joining step of placing and joining the rear part of the absorptive body to the back forming zone being conveyed;
The interior sheet band having a width dimension capable of covering from the front part to the rear part of the absorbent main body and having an elastic member attached to the front part along the longitudinal direction of the band is the line direction and the band. An interior sheet belt conveying step for conveying while applying tension along the width direction;
A long hole set to an opening area capable of opening substantially the entire area of the absorbent main body other than the region where each fastening portion is disposed is formed on the interior sheet belt so that the front portion divides the elastic member. A long hole forming step,
A cutting line forming step of forming a cutting line along the band width direction at the front portion of the interior sheet so as to be able to intersect with the long hole,
After positioning each fastening part and the front part of the interior seat belt so that they can be fastened and the absorbent main body is opened upward through the long hole, A placing process for placing on the sex body;
An interior sheet strip joining step for joining the interior seat strip to the back forming zone;
Leg holes are formed on the both sides of the absorbent main body in the line direction so as to overlap with the long holes, so that the interior sheet belt can be divided into a front belt section forming belt and a back interior sheet forming belt. The manufacturing method of the disposable pants characterized by including the leghole formation process to divide | segment.   In the manufacturing method of the disposable pants in any one of Claim 1 thru | or 3, In the said cutting line formation process, the rear-end part arrange | positioned so that a crossing with a long hole is possible, and an interior sheet belt | band | zone from this rear-end part A cutting line having a front end portion that terminates rearward of the front end portion is formed in the interior sheet band, and the interior sheet band is elongated in the longitudinal direction by the width of the band from the end position of the cutting line to the front end portion of the interior sheet. A process for producing disposable pants, further comprising an interior sheet band cutting step that cuts along the interior sheet, and performing the interior sheet band cutting step after the interior sheet joining step.

Images