JP2009153841A - Shorts-type absorbent article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shorts-type absorbent article manufacturing method capable of efficiently manufacturing a shorts-type absorbent article with excellent outer appearance and absorption performance, where a liquid hardly leaks even to the outer surface side of an exterior material. <P>SOLUTION: The shorts-type absorbent article manufacturing method is the method for manufacturing the shorts-type absorbent article which includes an absorbent core and the exterior material, where elastic members around a waist are arranged to be extended in the width direction of the exterior material in regions where the longitudinal direction ends of the absorbent core in the longitudinal direction of the exterior material are positioned, and in which the elastic members around the waist show elastic expansion on the outer sides of both side edges in the absorbent core and do not show elastic expansion between the both side edges. The method includes: a process for introducing the continuous bodies 23AS of the elastic members around the waist into between two belt shape sheets 21S, 22S for forming the exterior material; a process for pressing and cutting the introduced continuous bodies 23AS together with the two belt shape sheets 21S, 22S in at least one of paired exterior parts positioned outward from the respective positions of both the side edges in the absorbent core; and a core arrangement process for arranging the absorbent core 34 between the paired exterior parts after performing cutting. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a pants-type absorbent article such as a pants-type disposable diaper and a shorts-type sanitary napkin.

Conventionally, in a pants-type disposable diaper comprising an absorbent main body including an absorbent core and an outer packaging material positioned on the non-skin contact surface side of the absorbent main body and fixing the absorbent main body, For the purpose of improving the fit of diapers, etc., there are known those in which a waistline gather is provided at the waistline portions of the outer side and the back side of the outer packaging material.
In addition, in order to prevent the absorbent core from contracting significantly due to such waist gathers, the appearance and absorption performance of the diaper are deteriorated, the both side edges of the absorbent main body at the ventral side and the back side, respectively. It is known that a waistline gather is formed only on the outside (see Patent Document 1).
Such a girth gather can be formed by arranging an elastic member only in a part where the girth of the outer packaging material is desired to be formed, but industrially, the elastic member is formed between two sheets for forming the outer packaging material. After the continuous introduction, the elastic member at the site where it is not desired to form a gather is cut.

JP 2002-066573 A

  However, when the elastic member is cut after introducing the elastic member between the two sheets, not only the elastic member is cut but also one or both of the two sheets may have a hole. . Usually, after the elastic member is continuously introduced between the two sheets for forming the outer packaging material and the elastic member in a portion where it is not desired to form the gathers is cut, the absorbent core having the liquid-impermeable sheet is removed. Since it is arranged on the sheet, even if the two sheets for forming the outer packaging material have holes, the liquid does not leak to the outer surface of the outer packaging material. However, the end of the absorbent core in the longitudinal direction usually has a side made of a liquid-resistant or water-repellent material that is disposed at both ends of the absorbent core due to its industrial manufacturing method. When there is such a hole in the longitudinal end portion of the absorbent core because the side cuff does not exist, the liquid flows from the longitudinal end portion of the absorbent main body through the hole to the outer surface of the outer packaging material. There was a case of leaking to the side. As a method for solving such a problem, a proposal has been made such as attaching another member such as a cuff made of a liquid-resistant or water-repellent material in the same manner as both ends of the absorbent core. From the viewpoint of workability, there are many problems at present. Moreover, although it is considered as a countermeasure that the elastic body is not disposed in the outer packaging material portion corresponding to the longitudinal end portion of the absorbent main body, a new problem such as a decrease in the fit property of the portion occurs at present. is there.

  Accordingly, an object of the present invention is to provide a pant-type absorbent article that can prevent the liquid from leaking to the outer surface side of the outer packaging material and can efficiently produce a pant-type absorbent article excellent in appearance and absorption performance at a low cost. It is to provide a manufacturing method.

  The present invention includes an absorbent core and an outer packaging material, and the body elastic member extends in the width direction of the outer packaging material in a region where the longitudinal end of the absorbent core is located in the longitudinal direction of the outer packaging material. The body elastic member expresses elastic stretchability at the outer sides of both side edges of the absorbent core and does not express elastic stretchability between the side edges. A method for producing a pant-type absorbent article, wherein an elastic member introducing step for introducing a continuous body elastic member between two belt-like sheets for forming an outer packaging material, and a continuous body elastic body introduced A cutting step of pressurizing and cutting together with the two belt-like sheets in at least one of a pair of outer portions which are portions located on the outer sides of both side edges of the absorbent core, after the cutting step, The absorbent core is disposed between the pair of outer portions. It is obtained by achieving the above object by providing a method for producing pant-type absorbent article having a core arrangement step of.

  According to the method for producing a pant-type absorbent article of the present invention, it is possible to efficiently produce a pant-type absorbent article that hardly leaks liquid to the outer surface side of the outer packaging material and that is excellent in appearance and absorption performance.

Hereinafter, the present invention will be described based on preferred embodiments with reference to the drawings.
First, a pants-type disposable diaper 1 (pants-type absorbent article) manufactured in one embodiment of the present invention will be described.
The pants-type disposable diaper 1 includes an absorbent core 34 and an outer packaging material 2 as shown in FIGS. 3 and 4, and as shown in FIG. 5, in the longitudinal direction (Y direction) of the outer packaging material 2, The region D1 where the end of the absorbent core 34 in the longitudinal direction is located has a body elastic member 23A extending in the width direction (X direction) of the outer packaging material 2, and the body elastic member 23A is formed of the absorbent core. The outer side of each of the side edges 4c and 4c exhibits elastic stretchability, and the side stretches 4c and 4c do not exhibit elastic stretchability.

  As shown in FIGS. 3 and 4, the pants-type disposable diaper 1 is located on the non-skin contact surface side of the absorbent main body 3 including the absorbent core 34 and the absorbent main body 3, and fixes the absorbent main body 3. The outer packaging material 2 is provided. As shown in FIGS. 1 and 2, the outer packaging material 2 has an abdominal side A, a crotch C, and a back side B in the longitudinal direction. Both side edges of the part B are joined together to form a pair of side seal parts 11, a waist opening part 12, and a pair of leg opening parts 13. The abdomen side A of the outer packaging material 2 is a part arranged on the abdomen side of the wearer when the diaper 1 is worn, and the back side part B is a part arranged on the dorsal side of the wearer, and the crotch part C is a site | part distribute | arranged to a wearer's crotch part. The longitudinal direction of the outer packaging material 2 is the direction from the abdominal side A to the back side B through the crotch C, or the opposite direction, and is the same as the longitudinal direction of the diaper in the unfolded state (vertical direction in FIG. 2). .

  The outer packaging material 2 includes an outer layer sheet 21, an inner layer sheet 22, and a plurality of elastic members 23 </ b> A, 23 </ b> B, 24, 25 disposed between both sheets 21, 22. A pair of first waistline side gathers G1 and G1, a pair of second waistline side gathers G4 and G4, and a waist gather G2 are formed on the waistline part D and the waist part F in the back side part B, respectively.

  As shown in FIGS. 3 and 4, the absorbent main body 3 includes a liquid-permeable top sheet 32, a liquid-impermeable or water-repellent back sheet 33, and a liquid retaining property disposed between both sheets 32 and 33. The absorptive core 34 is fixed to the outer packaging material 2 located on the back sheet 33 side (non-skin contact surface side) of the absorbent main body 3. The absorbent main body 3 is disposed across the ventral side A to the back side B of the outer packaging material 2, but the longitudinal end of the absorbent main body 3 is more than the longitudinal end of the outer packaging 2. It is in a position retracted inward in the longitudinal direction. The absorptive main body 3 is joined to the inner layer sheet 22 of the outer packaging material 2 by a main body joining portion 15 such as an adhesive, a heat seal, and an ultrasonic seal.

  The top sheet 32, the back sheet 33, and the absorbent core 34 are each rectangular, and are integrated to form the vertically long absorbent main body 3. As the surface sheet 32, the back surface sheet 33, and the absorptive core 34, the thing similar to what was conventionally used for this kind of diaper can be used, respectively. For example, the absorbent core 34 may be made of absorbent polymer particles and a fiber material and covered with tissue paper (not shown).

  As shown in FIGS. 2 to 4, side cuffs 35 and 35 made of a liquid-resistant or water-repellent and breathable material are provided on both sides in the longitudinal direction of the absorbent main body 3. In the vicinity of the free end of each side cuff 35, a side cuff elastic member 36 is disposed in an expanded state. As for the side cuff 35, the free end side stands up at the time of wearing of a diaper, and the outflow of the liquid to the width direction of the absorptive main body 3 is prevented. The side cuff forming sheet 37 for forming the side cuffs 35 has a predetermined width portion 37A on the outer side in the width direction of the absorbent main body 3 being wound down to the skin contact surface side of the absorbent core 34, so that the absorbent core 34 and the back sheet 33 or the back sheet 33 and the outer packaging material 2 are fixed.

The outer wrapping material 2 has an hourglass shape in which both side edges are bound inward in the central portion in the longitudinal direction, and defines the outline of the diaper.
The outer packaging material 2 is formed of an outer layer sheet 21, an inner layer sheet 22, and a plurality of elastic members 23 </ b> A, 23 </ b> B, 24, and 25 disposed between both sheets 21 and 22. The outer layer sheet 21 forms the outer surface of the diaper, and the inner layer sheet 22 is disposed on the inner surface side of the outer layer sheet 21 and is partially joined to the outer layer sheet 21.

  As shown in FIG. 3, the outer layer sheet 21 has a length that extends further than a portion where the waist elastic members 24, 24 are sandwiched and fixed by the outer layer sheet 21 and the inner layer sheet 22, and the inner layer sheet in the outer layer sheet 21. Extension regions 21B and 21B extending from 22 are folded back toward the absorbent main body 3 side. The inner layer sheet 22 has the same shape as the portion 21 </ b> A other than the extension region 21 </ b> B of the outer layer sheet 21. In the extension region 21 </ b> B of the outer layer sheet 21, a portion that overlaps both end portions in the longitudinal direction of the absorbent main body 3 is bonded via an adhesive (not shown) over substantially the entire width of the absorbent main body 3.

FIG. 5 is a schematic diagram showing the arrangement of the elastic members in the outer packaging material 2 of the diaper 1.
As shown in FIG. 5, the waist elastic member 24 that forms the waist gathers G <b> 2 has an absorbent core in the longitudinal direction (Y direction in FIG. 5) of the outer packaging material 2 in each of the ventral side A and the back side B. 34 between the front and rear ends 4a, 4b of the 34 and the peripheral ends 12a, 12b of the waist opening (waist portion F).

  As for the 1st trunk | drum elastic member 23A, the edge part of the longitudinal direction of the absorptive core 34 in the longitudinal direction (Y direction in FIG. 5) of the outer packaging material 2 is located in the abdominal side part A and the back side part B, respectively. The region D1 is arranged. A plurality of first torso elastic members 23A are arranged in the region D1 on the abdominal part A and the back part B, respectively, with different positions in the longitudinal direction of the outer packaging material 2. It extends in the width direction (X direction in FIG. 5). The region D1 where the end of the absorbent core 34 in the longitudinal direction is located is a range up to 10 mm in the front and rear, centering on the front and rear ends 4a and 4b of the absorbent core 34, respectively.

  The first body elastic member 23A exhibits elastic stretchability at the outer sides of both side edges 4c, 4c of the absorbent core 34, and does not exhibit elastic stretchability between the side edges 4c, 4c. ing.

More specifically, the first body elastic member 23 </ b> A is a pair of core vicinity fixing portions that are located outward from the positions of the side edges 4 c and 4 c of the absorbent core 34 in the width direction (X direction) of the outer packaging material 2. 27A, 27A and a pair of outer fixing portions 28, 28 located at both ends of the outer packaging material 2 in the width direction, known joining means for the outer layer sheet 21 and the inner layer sheet 22 (two sheets forming the outer packaging material 2). It is fixed by. As a preferable joining means, an adhesive, a heat seal, a high frequency seal, or a combination thereof is used.
Each of the pair of core vicinity fixing portions 27A and 27A has a vertically long rectangular shape in plan view, and each core vicinity fixing portion 27A includes a plurality of first body portions between the outer layer sheet 21 and the inner layer sheet 22. The elastic member 23A is fixed. In the core vicinity fixing portion 27A, the distance L1 (see FIG. 5) from the side edge 4c of the absorbent core 34 is 1 to 5 cm, particularly 1 to 3 cm. This is preferable from the viewpoint of enabling the first body elastic member 23A to be cut between the fixing part 27A and obtaining good stretchable physical properties.

  The first body elastic member 23A is fixed to both the outer layer and inner layer sheets 21 and 22 between the core vicinity fixing portion 27A and the outer fixing portion 28 on both the left and right sides of the outer packaging material 2, respectively. Absent. The outer fixing portions 28, 28 in the diaper 1 are a portion forming the side seal portion 11 in each of the abdominal side A and the back side B of the outer packaging material 2 and a portion having a width of about 5 to 10 mm adjacent thereto.

Between the pair of core vicinity fixing portions 27A and 27A, the outer layer sheet 21 and the inner layer sheet 22 are joined. By joining the two sheets, it is possible to prevent deterioration of the appearance due to the outer layer sheet 21 floating and the outer layer sheet 22 from being broken during use.
The means for joining both sheets 21 and 22 includes (1) adhesive, (2) heat seal, high frequency seal, etc., and in the case of (1), the cut elastic body does not substantially exhibit stretchability. Furthermore, it is preferable that the adhesion is weak enough to move. The basis weight of the hot melt is preferably 0.5 to 5.0 g / m ² . In addition, if a linear pattern is applied only to a portion between the elastic body and the elastic body, the expansion and contraction of the elastic body does not affect the inner / outer layer sheet and the absorber bonded to the inner layer sheet, which is preferable. . (2) In the case, a dot, a linear pattern, etc. are mentioned, It is preferable from a viewpoint that an elastic body does not express a stretching property on this absorber that this seal is made in the part which an elastic body does not exist.
Also for the second body elastic member 23B, it is preferable that the outer layer sheet 21 and the inner layer sheet 22 sandwiching the second body elastic member 23B are joined in a similar manner at the pair of inner fixing portions 27B and 27B.

  2nd trunk | drum elastic member 23B is the area | region where 23 A of 1st trunk | drum elastic members are distribute | arranged in the longitudinal direction (Y direction in FIG. 5) of the outer packaging material 2 in each of the abdominal part A and the back part B. It arrange | positions to the area | region D2 of the crotch C side (center part side of the longitudinal direction of an absorptive core) rather than D1. A plurality of second torso elastic members 23B are also arranged on the ventral side A and the back side B, respectively, with different positions in the longitudinal direction of the outer packaging material, both of which are in the width direction of the outer packaging material 2 (FIG. 5). (X direction in the middle).

  The second body elastic member 23 </ b> B exhibits elastic stretchability in the outer side of both side edges 4 c and 4 c of the absorbent core 34 and in a portion overlapping with both side parts of the absorbent core 34. The portion 51 that overlaps with the elastic member does not exhibit elastic stretchability.

More specifically, the second body elastic member 23B is a pair of inner fixing portions positioned inward from the positions of the side edges 4c and 4c of the absorbent core 34 in the width direction (X direction) of the outer packaging material 2. 27B, 27B and a pair of outer fixing portions 28, 28 located at both ends of the outer packaging material 2 in the width direction, known joining means for the outer layer sheet 21 and the inner layer sheet 22 (two sheets forming the outer packaging material 2). It is fixed by. As a preferable joining means, an adhesive, a heat seal, a high frequency seal, or a combination thereof is used.
Each of the pair of inner fixing portions 27B and 27B has a vertically long rectangular shape in plan view, and a plurality of second body elastic members are provided between the outer layer sheet 21 and the inner layer sheet 22 in each inner fixing portion 27B. 23B is fixed. The inner fixing portion 27B has a distance L2 (see FIG. 5) from the side edge 4c of the absorbent core 34 of 1 to 3 cm, particularly 1 to 2 cm. This is preferable because the fit to the skin is improved and the leak-proof performance is improved.
Further, the second body elastic member 23B is not fixed to either the outer layer or the inner layer sheets 21 and 22 between the inner side fixing part 27 and the outer side fixing part 28 on each of the left and right sides of the outer packaging material 2. .

  The waist elastic member 24, the first and second body elastic members 23A, 23B are both the outer layer sheet 21 and the inner layer sheet in the pair of outer fixing portions 28, 28 located at both ends in the width direction of the outer packaging material 2. 22 is fixed by an adhesive and heat seal. The waist elastic member 24 exhibits elastic stretchability in the entire region between the pair of outer fixing portions 28 and 28 in the abdominal side portion A and the back side portion B, respectively.

  On the other hand, the second body elastic member 23B develops elastic stretchability between the inner fixing portion 27B and the outer fixing portion 28 on each of the left and right sides of the outer packaging material 2, but the pair of inner fixing portions 27B, Between 27B, substantially elastic elasticity is not expressed.

  More specifically, when the diaper 1 is manufactured by a so-called cross-flow method, an elongated elastic member is continuously introduced in an expanded state between the outer layer sheet 21 and the inner layer sheet 22, and then the absorbent main body 3. Before fixing the outer layer sheet 21 and the inner layer sheet 22 with the elastic member interposed therebetween, a pair of inner fixing portions 27B and 27B are formed, and a large number of cutting projections are formed on the peripheral surface. By pressing and heating with the cutting projections of the pressure roll 62 having a dotted shape, the elastic members positioned between the pair of inner fixing portions 27B and 27B are respectively cut to release the extended state. It is. In FIG. 5, an area denoted by reference numeral 51 is an area where the second body elastic member 23 </ b> B is made non-functional in this way, and is pressed and heated by the cutting convex part of the pressure roll. The portion 51a (see FIG. 6) exists in the form of dots.

A pair of first waistline side gathers G1 and G1 are formed on the waistline D of each of the abdominal side A and the back side B of the diaper 1 according to the present embodiment by the first body elastic member 23A. A pair of second waistline side gathers G4 and G4 are formed by the second body elastic member 23B.
In the first waistline side gather G1, the outer layer sheet 21 and the inner layer sheet 22 are joined to each other at a first joining portion 41A formed in a dotted shape as shown in FIG.
Also in the second waistline side gather G4, the outer layer sheet 21 and the inner layer sheet 22 are joined to each other at a second joining portion 41B formed in a dotted shape as shown in FIG.
Both the first joint 41A and the second joint 41B are intermittently formed in the longitudinal direction (Y direction) and the width direction (X direction) of the outer packaging material 2, respectively.

In the first waistline side gather G1, a plurality of first body elastic members 23A are arranged so as not to pass through the first joint portions 41A, respectively, and the outer layer sheet 21 and the inner layer sheet 22 are respectively A plurality of ridges 43 extending continuously across the plurality of first body elastic members 23A are formed.
In the second waistline side gather G4, a plurality of second body elastic members 23B are arranged so as not to pass through the second joint portions 41B, and a plurality of outer layer sheets 21 and a plurality of inner layer sheets 22 are provided. A plurality of flanges 43 extending continuously over the second body elastic member 23B are formed.
The first joint 41A and the second joint 41B are formed by heat fusion.

FIG. 6 shows an example of a preferable arrangement pattern of the first joint 41A and the second joint 41B. In the arrangement pattern shown in FIG. 6, each of the first joint portions 41 </ b> A is formed so as to form a row in the longitudinal direction and the width direction of the outer packaging material 2, and the first joining portion 41 </ b> A constitutes the longitudinal row of the outer packaging material 2. One joining portion 41A is formed between the first body elastic members 23A. In the first waistline side gather G1, at least in a natural state (a state where no external force is applied), the first body elastic member 23A contracts, and each of the outer layer sheet 21 and the inner layer sheet 22 includes a plurality of sheets. A plurality of gathers 43 that continuously extend over the elastic member 23A are formed.
In the arrangement pattern shown in FIG. 6, each of the second joint portions 41 </ b> B is formed so as to form a row in the longitudinal direction and the width direction of the outer packaging material 2, and constitutes a longitudinal row of the outer packaging material 2. A second joint portion 41B is formed between the second body elastic members 23B. In the first waistline side gather G4, at least in a natural state (a state in which no external force is applied), the second body elastic member 23B contracts, and each of the outer layer sheet 21 and the inner layer sheet 22 has a plurality of pieces. A plurality of gathers (gathers) 43 extending continuously over the elastic member 23B are formed.

  In the diaper 1 according to the present embodiment, as shown in FIG. 8, in the first waistline side gather G1, between the first joint portions 41A, 41A adjacent to each other in the width direction (X direction) of the outer packaging material 2, respectively. One collar 43 is formed, and one collar 43 is provided between the second joint portions 41B and 41B adjacent to each other in the width direction (X direction) of the outer packaging material 2 in the second waistline side gather G4. Is formed. The collar 43 in the first waistline side gather G1 extends continuously in the longitudinal direction (Y direction) of the outer packaging material 2 without being divided at the portion overlapping the first elastic member 23A, and the second waistline side gather G4. The flange 43 in FIG. 5 also extends continuously in the longitudinal direction (Y direction) of the outer packaging material 2 without being divided at a position overlapping the second body elastic member 23B.

  From the viewpoint of reliably forming the flange 43 extending continuously over a plurality of elastic members, the first joint 41A or the second joint in the width direction (X direction) of the outer packaging material 2 when the outer packaging material 2 is extended. The pitch P2 (see FIG. 6) of the portion 41B is preferably 1 to 20 mm, particularly 3 to 10 mm, and the length L2 (see FIG. 6) of the first joint portion 41A and the second joint portion 41B is 0. 0 mm. It is preferable that it is 1-5 mm, especially 0.2-1.5 mm. The ratio (P2 / L2) between the pitch P2 and the length L2 is preferably 1.1 to 200, particularly 2 to 50. Moreover, it is preferable that the pitch P3 (refer FIG. 6) of the 1st junction part 41A and the 2nd junction part 41B in the longitudinal direction of the outer packaging material 2 is 1-40 mm, especially 2-15 mm, and the 1st junction part 41A. And length L3 (refer FIG. 6) of the same direction of the 2nd junction part 41B is 0.5-20 mm, It is preferable that it is 1-10 mm especially. The ratio (P3 / L3) between the pitch P3 and the length L3 is preferably 1.05 to 80, particularly 1.05 to 15.

As shown in FIGS. 8 and 9, the flanges 43 in the outer layer sheet 21 and the inner layer sheet 22 are formed so as to protrude on both surfaces of the outer packaging material 2. A convex curved surface having an arcuate cross section is formed. The convex curved surface continuously extends in the longitudinal direction (Y direction) of the outer packaging material 2.
FIG. 8 is a view showing a cross section along the width direction of the outer packaging material of the first waistline side gather G1, in which the extension region 21B of the outer layer sheet 21 is located on the inner surface side of the inner layer sheet 22. Yes. FIG. 9 is a view showing a cross section along the width direction of the outer packaging material of the first waistline side gather G4. In the cross section, the extension region 21B of the outer layer sheet 21 exists on the inner surface side of the inner layer sheet 22. Absent.
8 and 9, (a) shows a state in which the elastic member 23A (or 23B) is extended to eliminate the flange 43, and (b) shows that the elastic member 23A (or 23B) contracts to form the flange 43. It shows the state being done.

In the diaper 1 which concerns on this embodiment, as shown in FIG.6 and FIG.7, the opening peripheral edge 12a of the waist opening part of the width direction outer side part 2B of the outer packaging material 2 in each of the abdominal part A and the back side part B , 12b to the upper end position 13a of the leg opening, the waist joint portion 41, the first joint portion 41A, and the second joint portion 41B having the same shape are formed in the same arrangement pattern, and the waist elastic member 24 The first and second body elastic members 23A and 23B are arranged so as not to pass through the joint portions 41, 41A and 41B, respectively. Thereby, as shown in FIG. 7, a large number of ridges 43 continuously extend between the waist gather G2 and the second waistline side gather G4 on the outer side 2B in the width direction of the outer packaging material 2. Is formed.
Moreover, the waist part F of the width direction center part 2A of the outer packaging material 2 in each of the abdominal side part A and the back side part B has the first and second waistline side gathers G1 except that the width direction pitch is slightly wider. A waist joint portion 41 is formed in the same manner as G4, and the waist elastic member 24 is arranged so as not to pass through the waist joint portion 41, like the first and second body elastic members 23B. . Thereby, as shown in FIG. 7, a plurality of ridges 43 and ridges 43 extending over the plurality of waist elastic members 24 are formed in the center portion 2 </ b> A in the width direction of the outer packaging material 2.
In addition, the leg elastic member 25 is distribute | arranged to the peripheral part of a leg opening part, and the leg gather G3 is formed. The leg elastic member 25 is fixed in an extended state between the outer layer sheet 21 and the inner layer sheet 22 via an adhesive.

Next, an embodiment of a method for producing a pant-type absorbent article of the present invention will be described by taking as an example the case of producing the diaper 1 described above.
As shown in FIG. 10, the manufacturing method includes an elastic member introducing step of continuously introducing the first body elastic member 23AS between the two belt-like sheets 21S and 22S for forming the outer packaging material, The part elastic member 23AS is moved together with the two belt-like sheets 21S and 22S in each of the pair of outer portions S and S which are portions located outward from the positions of the side edges 4c and 4c of the absorbent core 34. A cutting step of pressing and cutting, and a core in which the absorbent core 34 in a state of being incorporated in the absorbent main body 3 is placed in the core placement region 34S that is a portion between the pair of outer portions S and S after the cutting step. A placement step. As shown in FIG. 11, the pair of outer portions S and S are located outward from the positions of the side edges 4 c and 4 c of the absorbent core 34 when each pants-type absorbent article is used. The core arrangement region 34S is a part where the absorbent core is arranged later, and is a part located between the pair of outer portions S and S.

This manufacturing method will be described in more detail. In this manufacturing method, the outer layer sheet continuous body 21 </ b> S (strip-shaped sheet) is used as the original fabric of the outer layer sheet 21, and the inner layer sheet continuous body 22 </ b> S (strip-shaped sheet) is used as the original fabric of the inner layer sheet 22.
Each continuous body 23AS, 23BS, 24S, 25S of each elastic member 23A, 23B, 24, 25 is introduced between the outer layer sheet continuous body 21S and the inner layer sheet continuous body 22S in an expanded state.
Before the outer layer sheet continuous body 21S and the inner layer sheet continuous body 22S merge, the adhesive coating device 64 is used for hot melt to a predetermined position such as a region where the leg elastic member is disposed on each facing surface side. A mold adhesive is applied. Further, the continuum 25S of the leg elastic member 25 is swung so as to follow the shape of the leg opening 13 by a swing guide (not shown), and between the outer layer sheet continuum 21S and the inner layer sheet continuum 22S. To be introduced.

  Both sheet continuums 21S, 22S are narrowly pressed between the pair of nip rolls 61, 61 with the elastic member continuums 23AS, 23BS, 24S, 25S sandwiched therebetween. As a result, an outer packaging material continuous body 2S having a configuration in which the elastic member continuous bodies 23AS, 23BS, 24S, and 25S are sandwiched between the two sheet continuous bodies 21S and 22S is obtained.

Next, the outer packaging material continuous body 2 </ b> S is introduced between the pressure roll 62 and the anvil roll 63.
The pressure roll 62 includes a first waistline gather forming part 62A, a core vicinity fixing part forming part 62B, a first body elastic member cutting part 62C, a second waistline gather forming part 62D, The fixing part forming part 62E, the second body elastic member cutting part 62F, and the leg elastic member cutting part 62G are provided. The anvil roll 63 is a receiving roll for the pressure roll 62, and its peripheral surface is a smooth surface.

The first waistline gather forming portion 62A is provided with a number of emboss pins (not shown) corresponding to the first joint portions 41A of the first waistline side gather G1. The embossed spins are provided in the form of dots like the first joint 41A.
The second waistline gather forming portion 62D is provided with a large number of emboss pins (not shown) corresponding to the second joint portion 41B of the second waistline side gather G4 in the same manner as the arrangement pattern of the second joint portion 41B. Yes. When both sheet continuums 21S and 22S are pressurized and heated between the embossed spin and the anvil roll 63, the first joint 41A and the second joint 41B are formed. The embossed spin may be a heat embossed spin or an ultrasonic embossed spin.

The core vicinity fixing part forming part 62B is a part that forms the core vicinity fixing parts 27A and 27A described above on the outer packaging material continuum 2S, and has a quadrangular frustum-shaped protrusion having the same top as the core vicinity fixing part 27A. It has a part. By pressing (or pressurizing and heating) both sheet continuous bodies 21S and 22S between the convex portion and the anvil roll 63, a pair of front and rear core arrangement regions 34S in the flow direction of the outer packaging material continuous body 2S is provided. The core vicinity fixing portions 27A and 27A are formed. Core vicinity fixing | fixed part 27A, 27A is formed so that it may not overlap with the core arrangement | positioning area | region 34S which is a site | part by which the absorptive core 34 is arrange | positioned later. That is, the interior of the core arrangement area 34S is not included before and after the core arrangement area 34S.
The core vicinity fixing portion 27A is formed at a predetermined distance from the front and rear ends of the core arrangement region 34S in each of the front and rear sides of the core arrangement region 34S. A preferable separation distance between the core arrangement region 34S and the core vicinity fixing portion 27A is the same as a preferable range of the separation distance L1.

  The inner fixing portion forming portion 62E is a portion for forming the inner fixing portions 27B and 27B described above on the outer packaging material continuum 2S, and has a quadrangular frustum-shaped convex portion having a top having the same shape as the inner fixing portion 27B. . By pressing (or pressurizing and heating) both sheet continuums 21S and 22S between the convex portion and the anvil roll 63, a pair of inner sides overlaps with the core arrangement region 34S of the outer packaging material continuum 2S. Fixed portions 27B and 27B are formed. A preferable separation distance between the inner fixing portion 27B and the front and rear ends of the core arrangement region 34S is the same as a preferable range of the separation distance L2.

The first body elastic member cutting part 62C of the pressure roll 62 is configured such that the first body elastic member continuous body 23AS is formed between the core vicinity fixing part 27A and the core arrangement region 34S in the flow direction of the outer packaging material continuous body 2S. It is the part that cuts in between. In the first body elastic member cutting part 62C, a plurality of cuts arranged so that all the first body elastic member continuous bodies 23AS are cut between the core vicinity fixing part 27A and the core arrangement region 34S. A convex portion for use (not shown) is formed. The first body elastic member continuous body 23AS is strongly pressed (or pressurized and heated) between the cutting convex portion and the anvil roll 63, whereby the first body elastic member continuous body 23AS is cut. In addition, the first body elastic member continuous body 23AS does not exhibit elastic stretchability between the pair of core vicinity fixing portions 27A and 27A facing each other across the core arrangement region 34S. A pressed mark 52 remains on the portion of the outer wrapping material continuous body 2S or the outer wrapping material 2 that has been pressed by the cutting protrusions in the first body elastic member cutting portion 62C. Pressurized traces are the outer wrapping material continuum 2S or the outer wrapping material 2 is a recessed part, a holed part, a fiber cut part, a fiber melted and solidified part, and an elastic body and an outer packaging material melted and solidified part. Etc. It is preferable that the cut part 62C of the first body elastic member has no hole and is recessed so that the outer packaging material continuous body 2S or the outer packaging material 2 is excellent in appearance.
Note that there is no adhesive between the two sheet continuous bodies 21S and 22S between the pair of core vicinity fixing portions 27A and 27A, or the cut elastic member contracts independently from the both sheet continuous bodies. Adhesive is arranged to such an extent that it does not interfere. An adhesive (especially a hot-melt adhesive) is disposed between the sheet continuous bodies 21S and 22S in the portion where the core vicinity fixing portion 27A is formed, so that the core vicinity fixing portion 27A is reliably formed. It is preferable from the viewpoint.

  The second body elastic member cutting part 62F of the pressure roll 62 cuts the first body elastic member continuous body 23AS between the pair of inner fixing parts 27B and 27B in the flow direction of the outer packaging material continuous body 2S. It is a part to do. In the first body elastic member cutting part 62F, all the second body elastic member continuous bodies 23BS are preferably at least once between the pair of inner fixing parts 27B and 27B in one core arrangement region 34S. Are cut a plurality of times, and a plurality of cutting projections (not shown) are formed. For example, a plurality of cutting protrusions are formed in series in the axial direction of the roll to form a protruding row, and the protruding rows are formed in multiple rows in the circumferential direction of the roll. In the row, the positions of the convex portions in the roll axis length direction are shifted.

The second body elastic member continuous body 23BS is pressurized (or pressurized and heated) between the cutting convex portion and the anvil roll 63, whereby the second body elastic member continuous body 23BS is cut. Between the pair of inner fixing portions 27B and 27B formed in each core arrangement region 34S, the second body elastic member continuous body 23BS does not exhibit elastic stretchability. A pressed mark 51a remains on the portion of the outer wrapping material continuous body 2S or the outer wrapping material 2 that is pressed by the cutting protrusions in the second body elastic member cutting portion 62F. Pressurized traces are the outer wrapping material continuum 2S or the outer wrapping material 2 is a recessed part, a holed part, a fiber cut part, a fiber melted and solidified part, and an elastic body and an outer packaging material melted and solidified part. Etc. It is preferable that the cutting part 62F of the second body elastic member has no hole and is recessed so that the outer packaging material continuous body 2S or the outer packaging material 2 is excellent in appearance.
It should be noted that no adhesive is present between the sheet continuous bodies 21S and 22S between the pair of inner fixing portions 27B and 27B formed in each core arrangement region 34S, or the cut elastic members are both The adhesive is disposed to such an extent that it does not prevent the sheet from shrinking independently from the continuous sheet. On the other hand, the adhesive (particularly hot-melt adhesive) is disposed between the two sheet continuous bodies 21S and 22S where the inner fixing part 27B is formed, so that the inner fixing part 27B is reliably formed. It is preferable from the viewpoint.

  The cutting convex portion in each of the first or second body elastic member cutting portions 62C and 62F may be composed of a cutter blade having a sharp tip, a large number of embossed pins for curing the elastic member by heat sealing, or the like. good.

  The leg elastic member cutting region forming part 62G is a part that cuts the leg elastic member continuous body 25S located at the center of the crotch part C in the width direction, and can form the leg elastic member cutting region 52. The leg elastic member cutting region forming part 62G is composed of, for example, a large number of convex parts and cutter blades. According to the leg elastic member cutting region forming part 62G, the leg elastic members 25, 25 separated in the width direction at the center in the width direction of the crotch C are obtained by cutting the leg elastic member continuous body 25S.

Corresponding to the region D1 of the outer packaging material 2 in the outer packaging material continuous body 2S by inserting the outer packaging material continuous body 2S having the above-described configuration between the pressure roll 62 and the anvil roll 63 having the above configuration. A pair of core vicinity fixing portions 27A are formed at the portions to be formed, a pair of inner fixing portions 27B and 27B are formed at portions corresponding to the region 2 of the outer packaging material 2, and each of the pair of core vicinity fixing portions 27A. The first body elastic member continuous body 23AS is cut between the core arrangement region 34S and the second body elastic member continuous body 23BS is cut between the pair of inner fixing portions 27B and 27B. Further, the joint portion 4A and the second joint portion 4B are formed.
And the absorptive main body 3 is fixed on the outer packaging material continuum 2S so that the absorptive core 34 incorporated therein overlaps the core arrangement region 34S. An adhesive is applied in advance to the surface of the absorbent main body 3 or the outer packaging material continuum 2S facing it.

  In the present embodiment, a surface sheet 32 is formed on an absorbent continuous body having a configuration in which a fiber material such as pulp fiber or an absorbent core 34 configured to hold a water-absorbing polymer is coated with tissue paper or a water-permeable nonwoven fabric. And the continuous body of the side cuff forming sheet 37 provided with the elastic member 37A are merged and integrated, and the continuous body of the liquid-impermeable back sheet 33 is merged and integrated so that the absorbent main body is in the longitudinal direction. An absorbent main body continuum having a continuous structure was manufactured, and the absorbent main body continuum was cut into a length corresponding to one diaper and rotated by 90 degrees, and then placed on the outer packaging material continuum 2S. Thus, since the continuous body of an absorptive main body is manufactured by the method of so-called longitudinal flow, and it is cut across the width direction, the end of the absorptive core is exposed at the end of the absorptive main body. It becomes.

The above-described pants-type disposable diaper 1 can be manufactured in the same manner as in a conventional so-called cross-flow type pants-type disposable diaper manufacturing method, except that the outer packaging material continuous body 2S thus obtained is used. .
For example, as shown in FIG. 12, both sides of the outer packaging material continuum 2 </ b> S after fixing the absorbent main body 3 are folded back so as to cover both ends of the absorbent main body 3. After fixing both sides of the outer packaging material continuum 2S, the outer packaging material continuum 2S is folded in two with the absorbent main body 3. An adhesive is applied in advance to a predetermined position of the inner side of the region to be the extension region 21B in the outer packaging material continuous body 2S, the inner layer continuous sheet 22S, the absorbent main body 3, and the like.
Moreover, as shown in FIG. 10 or FIG. 12, the diaper continuous body 1S is obtained by removing the trim 13S for leg opening formation from the outer packaging material continuous body 2S using a rotary cutter, a laser cutter, or the like.
Then, the diaper continuous body 1S is folded back in the width direction (longitudinal direction of the disposable diaper 1) and folded in two. Next, after the side seal portions 11 and 11 are formed by heat sealing, ultrasonic seal, high frequency seal or the like, or at the same time as the side seal portions 11 and 11 are formed, the side seal portions 11 and 11 are divided into individual diapers, thereby having the above-described configuration. A pants-type disposable diaper 1 is obtained. The trim 13S for forming the leg opening can be removed before the absorbent main body 3 is fixed to the outer packaging material continuous body 2S. Further, when the side seal portion 11 is formed, the outer fixing portion 28 described above is formed.

According to this manufacturing method, the continuous body 23AS of the first body elastic member is cut before and after the core arrangement region 34S so as not to overlap with the core arrangement region 34S, and the end of the absorbent core 34 in the longitudinal direction is formed. Between the two side edges 4c and 4c of the absorbent core 34 in the region D1, the hole is easy to allow liquid to permeate the portion that overlaps the absorbent core 34 in the region D1. It is possible to efficiently manufacture a pant-type diaper having excellent appearance, absorption performance, and waistline fitability while preventing the formation of the like.
In addition, since the liquid can be prevented from oozing out from the end of the absorber, another member such as a cuff made of a liquid-resistant or water-repellent material is provided at the longitudinal end of the diaper. There is no need for mounting, and it is free from cost and workability. In addition, the first body elastic member disposed in the region D1 where the end portion in the longitudinal direction of the absorbent main body is located provides good fit to the region D1.

In addition, the first cylinder is arranged so as not to pass through the first joint portion 41A on the outer sides of both side edges 4c and 4c of the absorbent core 34 in the region D1 where the longitudinal end of the absorbent core 34 is located. Since the first waistline side gathers G1 and G1 in which the collar 43 is formed by the partial elastic member 23A are formed, the diaper 1 can be obtained in the fit and touch of both sides, and also in the air permeability.
Moreover, since the formation of the first joint portion 41A and the cutting of the first body elastic member continuous body 23AS are performed using the same pressure roll 62, the high-performance diaper 1 can be efficiently manufactured. it can.

Furthermore, in the manufacturing method of the present embodiment, the continuous body of the second body elastic member 23B is fixed by the inner fixing portions 27B and 27B and cut by the inner fixing portions 27B and 27B. And the both sides of the absorbent core 34 in the longitudinal direction can be pressed against the skin of the wearer, and the leakage of liquid from both sides of the absorbent core 34 is efficiently prevented, and the absorbent core 34 does not shrink and the appearance and absorption performance do not deteriorate.
Further, in addition to the formation of the first joint 41A and the cutting of the first body elastic member continuous body 23AS, the formation of the second joint 41B and the cutting of the second body elastic member continuous body 23BS are also common. Therefore, the diaper can be manufactured more efficiently.

In the diaper 1 obtained by the method of the present embodiment, as shown in FIG. 13, the core vicinity fixing portion 27A and the elastic member cutting portion CP obtained by cutting the continuous body of the body elastic member 23A are arranged in the diaper width direction. Separated and not overlapping. And outermost 27A 'of core vicinity fixing | fixed part 27A exists in the outer side (outside of the wear article width direction) outermost CP' of elastic member cutting part CP which cut | disconnected the continuous body of trunk | drum elastic member 23A. . The elastic member cutting portion CP in the present embodiment is a region where the portions 51a that are pressed and heated by the cutting projections are distributed in the form of dots.
FIG. 14 is a view showing another diaper manufactured by the method of the present invention, in which the core vicinity fixing portion 27A and the elastic member cutting portion CP obtained by cutting the continuous body of the body elastic member 23A are partially overlapped. ing. However, the outermost portion 27A ′ of the core vicinity fixing portion 27A exists outside (outside in the wearing article width direction) the outermost CP ′ of the elastic member cutting portion CP obtained by cutting the continuous body of the body elastic member 23A. .

As shown in FIGS. 13 and 14, the outermost portion 27A ′ of the core vicinity fixing portion 27A is positioned outside the outermost portion CP ′ of the elastic member cutting portion CP, so that the cut elastic body is at least an outer packaging material. Fixed.
The length L4 (see FIG. 14, length in the wearing article width direction) that the core vicinity fixing portion 27A can substantially function as the fixing portion is preferably 3 to 30 mm, and more preferably 5 to 20 mm. By fixing the elastic member to 3 mm or more, it is possible to ensure the fixing of the elastic member, and by setting it to 30 mm or less, it is possible to prevent adverse effects on the softness, air permeability, wrinkle formation and the like.
The core vicinity fixing portions 27A and 27A may be provided with a fixing portion that is continuous from one side in the width direction to the other side instead of being provided separately on both sides in the width direction of the diaper. . For example, the fixing portion may be continuously present between one fixing portion 27A and the other fixing portion 27A in FIGS.
From the viewpoint of efficiently using the fixing portion, the core vicinity fixing portion 27A and the elastic member cutting portion CP obtained by cutting the continuous body of the body elastic member 23A are separated in the diaper width direction as shown in FIG. A form that does not overlap is preferable.

The material for forming the diaper 1 will be described.
As the outer layer sheet 21 and the inner layer sheet 22, various sheet materials conventionally used for this type of article can be used without particular limitation, but is preferably a non-woven fabric, particularly from the viewpoint of flexibility and the like. It is preferably a single layer sheet or a laminated sheet made of a through nonwoven fabric, a heat roll nonwoven fabric, a spunlace nonwoven fabric, a spunbond nonwoven fabric, a melt blown nonwoven fabric or the like. In addition, the nonwoven fabric used as the outer layer sheet 21 and the inner layer sheet 22 is a water-repellent nonwoven fabric. When liquid leaks to the outside of the absorbent core 34, the liquid is prevented from leaking outside the diaper. To preferred.
As a material for forming the elastic members 23A, 23B, 24, and 25, various known elastic materials used for absorbent articles such as disposable diapers and sanitary napkins can be used without particular limitation. Examples of the elastic material include synthetic rubber such as styrene-butadiene, butadiene, isoprene, and neoprene, natural rubber, EVA, stretchable polyolefin, and polyurethane. As the form of the elastic member, a thread-like (thread rubber etc.) or string-like (flat rubber etc.) cross section having a rectangular, square, circular, polygonal shape, or a multifilament type thread-like one can be used. .

As mentioned above, although this invention was demonstrated based on the preferable embodiment, this invention is not restrict | limited to the said embodiment.
For example, in the above-described embodiment, the first joint portion 41A and the pair of inner fixing portions 27B and 27B are formed in the same manner in the regions D1 of the ventral portion A and the back portion B, respectively. In this aspect, the continuous body of the first torso elastic member was cut, but only one region D1 of the abdominal part A and the dorsal part B has the above-described configuration, and the other is the other configuration. You can also The same applies to the regions D2 of the ventral portion A and the dorsal portion B.
The number of first body elastic members 23A disposed on each of the ventral side A and the back side B is one or 2 to 5 when the left and right sides of the outer packaging material 2 are collectively counted as one. The number may be 5 or 30 or more. The number of the second body elastic members 23B disposed on each of the ventral side A and the back side B is one or 2 to 5 when the left and right sides of the outer packaging material 2 are collectively counted as one. The number may be 5 or 30 or more.

  Moreover, you may perform formation of 41 A of 1st junction parts, and cutting | disconnection of continuous body 23AS of a 1st trunk | drum elastic member using another roll. Further, the formation of the second first joint portion 41A and the cutting of the second body elastic member continuous body 23BS may be performed using different rolls. Further, the formation of the core vicinity fixing portion 27A and the cutting of the first body elastic member continuous body 23AS may be sequentially performed using different rolls. Further, the formation of the inner fixing part 27B and the cutting of the continuous body 23BS of the second body elastic member may be sequentially performed using different rolls.

  Further, in the cutting step of cutting the continuous body of the first body elastic member, the continuous body may be cut only in any one of the front and rear of the core arrangement region 34S.

Further, the first joint portion 41A and the second joint portion 41B can be formed by ultrasonic bonding, bonding with an adhesive such as a hot-melt adhesive, or a combination of these other than thermal fusion. Further, any one or more of the waist joint portion 41, the first joint portion 41A, and the second joint portion 41B may be omitted so that the regular flange 43 is not formed.
Further, the arrangement pattern of the joint portions 41, 41A, 41B can be changed as appropriate. The shape of the joint portions 41, 41A, 41B can be an appropriate shape such as a rectangular shape, an oval shape, a circular shape, or a rhombus shape. The arrangement pattern of the joint portions 41, 41 </ b> A, and 41 </ b> B and the shape of each joint portion can be the same as those described in, for example, Japanese Patent Application Laid-Open No. 2005-080859.

  The pant-type absorbent article in the present invention may be a shorts-type sanitary napkin or the like instead of the pant-type disposable diaper.

FIG. 1 is a perspective view showing a pants-type disposable diaper manufactured according to an embodiment of the present invention. FIG. 2 is a developed plan view showing a state in which the diaper shown in FIG. 1 is developed and extended. FIG. 3 is an exploded perspective view of the diaper shown in FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. FIG. 5 is a schematic plan view showing the arrangement and fixing portions of the elastic member in the outer packaging material of the diaper shown in FIG. FIG. 6 is a plan view showing the first and second waistline side gathers of the diaper shown in FIG. 1 in an expanded state. FIG. 7 is a schematic diagram showing how the heels are formed on the belly side and the back side of the diaper shown in FIG. FIG. 8 is a view showing a cross section along the width direction of the outer packaging material of the first waistline side gather, (a) is a state in which the first body elastic member 23A is extended to eliminate wrinkles, and (b) is It is a figure which shows the state in which the 1st trunk | drum elastic member 23A contracted and the collar 43 was formed. FIG. 9 is a view showing a cross section along the width direction of the outer packaging material of the second waistline side gather, (a) is a state in which the second body elastic member 23B is extended to eliminate the flange 43, (b) These are figures which show the state by which the 2nd trunk | drum elastic member 23B contracted and the collar 43 was formed. FIG. 10 is a conceptual diagram centering on an elastic member introduction process, a cutting process, and a core arrangement process in the manufacturing method of the pants-type disposable diaper according to one aspect of the present invention. FIG. 11 is a schematic diagram showing a core arrangement region and outer portions before and after the core arrangement region. FIG. 12: is a conceptual diagram which mainly shows the process after a core arrangement | positioning process among the manufacturing methods of the underpants type disposable diaper of the one actual aspect of this invention. FIG. 13 is a schematic diagram illustrating an example of a preferable positional relationship between the core vicinity fixing portion and the elastic member cutting portion. FIG. 14 is a schematic diagram illustrating another example of a preferable positional relationship between the core vicinity fixing portion and the elastic member cutting portion.

Explanation of symbols

1 Pants-type disposable diapers (pants-type absorbent articles)
DESCRIPTION OF SYMBOLS 11 Side seal part 12 Waist opening part 13 Leg opening part 2 Outer packaging material 2A Width direction center part of outer packaging material 2B Width direction outer side part of outer packaging material 21 Outer layer sheet 21B Extension area 22 Inner layer sheet 23A 1st trunk | drum elastic member 23B 1st 2 body elastic member 24 waist elastic member 25 leg elastic member 27A core vicinity fixing part 27B inner side fixing part 28 outer side fixing part 3 absorptive main body 32 topsheet 33 backside sheet 34 absorptive core 4a longitudinal front end 4b longitudinal rear End 4c Side edge 35 Side cuff 36 Side cuff elastic member 37 Side cuff forming sheet 41 Waist joint 41A First joint (joint)
41B 2nd joint part 43 襞 G1 1st waist circumference side gather G2 Waist gather G3 Leg gather G4 2nd waist circumference side gather A A abdominal side B back side C crotch part D waist circumference D1 of the absorbent core in the longitudinal direction of the outer packaging material Region where the end portion is located D2 Region located on the crotch side from the region where the first body elastic member in the longitudinal direction of the outer packaging material is disposed

Claims (10)

An absorbent core and an outer packaging material are provided, and in the longitudinal direction of the outer packaging material, a body elastic member is arranged extending in the width direction of the outer packaging material in a region where the longitudinal end of the absorbent core is located. The body elastic member is a pant-type absorbent that is elastically stretchable on the outer sides of both side edges of the absorbent core and does not exhibit elastic elasticity between the side edges. A method for manufacturing an article, comprising:
An elastic member introducing step of introducing a continuous body of the body elastic member between the two belt-like sheets for forming the outer packaging material, and the introduced continuous body of the body elastic member at positions on both side edges of the absorbent core A cutting step in which at least one of a pair of outer portions, which are more outwardly positioned, is pressed together with the two strip sheets and cut, and after the cutting step, the absorption between the pair of outer portions For manufacturing a pants-type absorbent article, comprising a core disposing step of disposing an adhesive core.   The body elastic member in the pant-type absorbent article is composed of a pair of core vicinity fixing portions located on the outer side from the positions of both side edges of the absorbent core in the width direction of the outer packaging material and both end portions in the width direction of the outer packaging material. A pair of outer fixing portions located between the core fixing portion and the outer fixing portion, and any one of the two sheets is fixed between the two core forming portions and the outer fixing portion. The manufacturing method of the underpants type absorbent article of Claim 1 which is not fixed also to.   The underpants type absorption article according to claim 2 which manufactures the underpants type absorptive article in which the outermost part of said core near fixed part exists outside the outermost part of the elastic member cutting part which cut the continuum of said body elastic member. A method for producing a functional article.   The underpants type absorption article according to claim 3 which manufactures the underpants type absorptive article in which the innermost part of said core near fixed part exists outside the outermost part of the elastic member cutting part which cut the continuous body of said trunk part elastic member. A method for producing a functional article.   In the pant-type absorbent article, the two sheets constituting the outer packaging material are bonded to the outer sides of both side edges of the absorbent core in the region where the longitudinal end of the absorbent core is located. The joined portion is formed in a dotted shape, the body elastic member is disposed so as not to pass through the joint portion, and each of the two sheets is contracted by the body elastic member, The manufacturing method of the underpants type absorbent article in any one of Claims 2-4 which has formed the ridge extending over a some trunk | drum elastic member.   The manufacturing method of the underpants type absorbent article of Claim 5 which performs the formation of the said junction part, and the cutting | disconnection of the continuous body of the trunk | drum elastic member in the said cutting process using a common pressure roll. In the pants-type absorbent article, the second body elastic member extends in the width direction of the outer packaging material in a region on the crotch part side than the region where the body elastic member is disposed in the longitudinal direction of the outer packaging material. The second body elastic member exhibits elastic stretchability at the outer side of each side edge of the absorbent core and at the portion overlapping the both sides of the absorbent core, and the center of the absorbent core In the part that overlaps the part, it is arranged so as not to express stretch elasticity and stretchability,
In the elastic member introducing step, a continuous body of the second body elastic member is introduced between the two belt-like sheets in addition to the continuous body of the body elastic member, and in the cutting step, the first body The manufacturing method of the underpants type absorbent article in any one of Claims 1-6 which pressurizes and cut | disconnects the continuous body of 2 trunk | drum elastic members with the said 2 strip | belt-shaped sheet | seats in the said core arrangement | positioning area | region.   The second torso elastic member in the pant-type absorbent article has a pair of inner fixing parts positioned inward from the positions of both side edges of the absorbent core in the width direction of the outer packaging material and both ends in the width direction of the outer packaging material In the pair of outer fixing portions positioned at the portion, the outer fixing portion is fixed between two sheets, and between the inner fixing portion and the outer fixing portion, any of the two sheets The manufacturing method of the underpants type absorbent article of Claim 7 which is not fixed.   The pants-type absorbent article includes two sheets constituting an outer packaging material on the outer sides of both side edges of the absorbent core in the region on the crotch part side than the region where the body elastic member is disposed. The second joint portion between the sheets is formed in a dotted shape, the second body elastic member is arranged not to pass through the joint portion, and each of the two sheets is the The manufacturing method of the underpants type absorbent article of Claim 8 which has formed the ridge extending over several 2nd trunk | drum elastic members by shrinkage | contraction of a 2nd trunk | drum elastic member.   The formation of the joint part and the second joint part and the cutting of the continuous body of the body elastic member and the continuous body of the second body elastic member in the cutting step are performed using a common pressure roll. A method for producing a pant-type absorbent article.

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