TWI692434B - Absorbent article manufacturing method and absorbent article manufacturing apparatus - Google Patents

Abstract

The manufacturing method of the disposable diaper which is an example of the absorbent article (1) of this invention is provided with the conveying process of conveying a short strip-shaped uneven sheet to a belt-shaped to-be-transmitted object. The conveying step uses a cutting device including an anvil roll (10) having a bottom knife (11) on the peripheral surface (10f), and a cutting knife (11) in contact with the bottom knife (11) on the surface (20f) 21) The cutter member (20). In the conveying step, the short strip-shaped concavo-convex sheet (2) is sucked through the suction hole (12) of the anvil roller (10) and conveyed.

Description

Absorbent article manufacturing method and absorbent article manufacturing apparatus

The invention relates to a method for manufacturing absorbent articles and a device for manufacturing absorbent articles.

For example, in a diaper, a fastening tape used to fix the diaper at a position corresponding to the waist portion is attached to the bottom sheet. In addition, in menstrual sanitary napkins, an adhesive tape for preventing deviation in wearing of the menstrual sanitary napkin is attached to the bottom sheet. Such a fastening tape or an adhesive tape is stuck on the base sheet using, for example, the intermittent cutting transfer device described in Patent Document 1 to Patent Document 2.

Patent Literature 1 is an invention previously proposed by the applicant regarding the intermittent cutting transfer device. Patent Document 1 discloses a technique related to an intermittent cutting and transferring device including an anvil roller that winds and conveys an attached sheet, and a longitudinal hole for suction in the anvil roller The opening peripheral portion is formed with an opening concave portion having an opening area larger than that of the vertical hole. According to the intermittent cutting transfer device described in Patent Document 1, when the application sheet is wound around an anvil roll and conveyed, the application sheet is less likely to wrinkle, and an absorbent article can be efficiently manufactured.

In addition, Patent Document 2 discloses a discontinuous cutting transfer device that has a first suction area and a suction pressure greater than the first suction area formed on the surface of the anvil roll carrying the fiber web The second suction area. The anvil roll described in Patent Document 2 forms a groove in the second suction area so that the suction pressure of the second suction area is greater than the suction pressure of the first suction area.

Prior technical literature Patent Literature

Patent Document 1: Japanese Patent Laid-Open No. 10-218471

Patent Document 2: WO2015/033242 Gazette

The present invention is a method for manufacturing an absorbent article in which a short strip-shaped concave-convex sheet formed by cutting a strip-shaped concave-convex sheet having a concave-convex structure is intermittently attached to a strip-shaped conveyed object to be conveyed. There is a conveying step of conveying the short strip-shaped concave-convex sheet to the belt-shaped object to be conveyed. The above-mentioned conveying step uses a cutting device including an anvil roll having a bottom knife on the peripheral surface and a cutting member having a cutting knife on the surface in contact with the bottom knife. The circumferential surface of the anvil roll has a groove provided with a suction hole, the groove being formed corresponding to the position of the convex portion of the short strip-shaped uneven sheet. In the conveying step, the short strip-shaped uneven sheet is sucked and conveyed through the suction hole of the anvil roll.

Moreover, this invention is the manufacturing apparatus of the absorbent article which intermittently stuck the short strip-shaped uneven sheet formed by cutting the band-shaped uneven sheet which has an uneven structure to the conveyed belt-shaped to-be-transmitted object. The manufacturing apparatus includes a cutting device including an anvil roll having a bottom knife on a peripheral surface, and a cutting member having a cutting knife in contact with the bottom knife on the surface. The circumferential surface of the anvil roll has a groove provided with a suction hole, the groove being formed corresponding to the position of the convex portion of the short strip-shaped uneven sheet. The extending direction of the convex portion of the short strip-shaped uneven sheet and the extending direction of the groove of the anvil roller are the same direction.

1: diapers

2: waist film

2B: Band-shaped uneven sheet

2t: convex part

3: sheet

4: Sheet

5: linear elastomer

6: Absorbent body

7: Velcro

10: Anvil roll

10B: Roller body

10f: the circumferential surface of the roller body

10e1: end face of the roller body

10e2: end face of the roller body

11: bottom knife

12: Suction hole

13: Slot

13b: bottom of the slot

14: horizontal hole

20: Cutter component

20f: the circumferential surface of the cutter member

21: Cutter

30: Intermittent cutting transfer device

41: Drive roller

42: Drive roller

100: Manufacturing device

131: The first groove

132: Second groove

a: space area

b: space area

c: space area

A: ventral side

B: back side

C: Lower crotch

W1: Slot width

W2: the width of the convex part

x: transport direction

y: direction orthogonal to the transport direction

X: length direction of diaper

Y: diaper width direction

FIG. 1 is a plan view showing an unfolded disposable diaper manufactured by an embodiment of the present invention.

FIG. 2 is a perspective view showing a schematic configuration of a diaper manufacturing apparatus that is preferably used to implement a manufacturing method according to an embodiment of the present invention.

Fig. 3 is a side view of the manufacturing apparatus shown in Fig. 2.

4 is a plan view of the anvil roll included in the manufacturing apparatus shown in FIG. 2.

5 is an enlarged cross-sectional view of a main part for explaining the relationship between the groove of the anvil roll and the convex portion of the concave-convex sheet to be conveyed provided in the manufacturing apparatus shown in FIG. 2.

Fig. 6 is a plan view of another anvil roll provided in a diaper manufacturing apparatus preferably used to implement the manufacturing method of one embodiment of the present invention.

The intermittent cutting transfer device described in Patent Document 1 does not assume that the sheet wound around the anvil roll and conveyed is an uneven-shaped sheet, and there is room for further improvement when an uneven-shaped sheet is used.

In addition, the groove formed on the anvil roll described in Patent Document 2 is formed so that the suction pressure of the second suction area is greater than the suction pressure of the first suction area. There is no description in Patent Document 2 regarding the relationship between the groove formed on the anvil roll included in the intermittent cutting transfer device and the convex portion of the uneven-shaped sheet that is wound around the anvil roll and conveyed.

Therefore, the present invention provides an absorbent article manufacturing method and an absorbent article manufacturing apparatus that can eliminate the aforementioned disadvantages of the prior art.

The manufacturing method of the absorbent article of the present invention is to intermittently attach a short strip-shaped concavo-convex sheet formed by cutting a strip-shaped concavo-convex sheet having a concavo-convex structure to a strip-shaped sheet conveyed as a strip-shaped to-be-transported object The manufacturing method of the above absorbent articles. Hereinafter, the manufacturing method of the present invention will be described based on its preferred embodiment with reference to the drawings. The absorbent article manufactured by the manufacturing method of the present invention is, for example, an unfolded disposable diaper 1 shown in FIG. 1 (hereinafter, also referred to as "diaper 1"). In addition, in the method of manufacturing the diaper 1, the elastic waist sheet 2 corresponds to the above-mentioned short strip-shaped uneven sheet, and the front sheet 6a corresponds to the above-mentioned sheet (transported object) to which the waist sheet 2 is bonded. First, the unfolded disposable diaper 1 having an elastic waist panel to be manufactured will be described.

As shown in FIG. 1, the diaper 1 has an absorbent body 6 having a ventral side A located on the ventral side of the wearer when worn, a back side B located on the back side, and a ventral side A and back side B The lower part of the crotch C between them; and a pair of left and right waist panels 2, 2, etc., which are continuously arranged on the left and right sides of the back side B. Furthermore, as shown in FIG. 1, the absorbent body 6 of the diaper 1 has a rectangular shape in a flat state.

In the following description, the longitudinal direction of the absorbent body 6 (also the longitudinal direction of the diaper 1) is taken as the X direction, and the transverse direction of the absorbent body 6 (also the width direction of the diaper 1) is taken as the Y direction.

The pair of waist panels 2 and 2 each have a rectangular shape in a state where they are flatly unfolded. Each waist panel 2 has two sheets 3 and 4 and a plurality of linear elastic bodies 5 disposed between the two sheets 3 and 4. As shown in FIG. 1, each waist panel 2 is arranged between two rectangular sheets 3, 4 of the same shape and the same size, and the lines extending in the horizontal direction (Y direction) are arranged at substantially equal intervals in the longitudinal direction (X direction) The elastic body 5 is formed integrally by means of an adhesive or fusion. In the natural state, the waist sheet 2 formed in this way forms a plurality of wrinkles that become convex portions 2t extending in the longitudinal direction (X direction) by contraction of the linear elastic body 5, thereby becoming a concave-convex sheet having a concave-convex structure material. That is, in the waist panel 2, the extending direction (X direction) of the convex portion 2t crosses the extending direction (Y direction) of the linear elastic body 5. More specifically, in the present embodiment, in the waist panel 2, the extending direction (X direction) of the convex portion 2t is orthogonal to the extending direction (Y direction) of the linear elastic body 5.

As the sheets 3 and 4 of the waist sheet 2 configured as an uneven sheet, as long as they are used for absorbent articles such as disposable diapers, they can be used without particular limitation. For example, as the sheets 3 and 4, non-woven fabrics, woven fabrics, films, or laminated sheets thereof or the like can be used. As the linear elastomer 5, a polymer including natural rubber, polyurethane, polystyrene-polyisoprene copolymer, polystyrene-polybutadiene copolymer, ethyl acrylate-ethylene, etc. can be used Linear stretchable materials such as ethylene-α-olefin copolymer material.

At the end portion on the lateral side (Y direction) outer side of the waist sheet 2 which is an uneven sheet, a hook-and-loop fastener 7 is fixed by a method such as adhesive or fusion. In addition, the lateral (Y direction) inner end of the waist sheet 2 is fixed to the back side portion B of the back sheet 6b constituting the absorbent body 6 by means of an adhesive or fusion, and is continuously provided on the back side Part B is laterally (Y direction) outside.

As shown in FIG. 1, the absorbent body 6 has a liquid-permeable front sheet 6a, a liquid-impermeable or water-repellent back sheet 6b, and a liquid-retaining property interposed between these two sheets 6a, 6b. Absorber 6c. The absorbent body 6 is formed by interposing the absorber 6c between the front sheet 6a constituting the inner surface of the diaper 1 and the back sheet 6b constituting the outer surface of the diaper 1, as shown in FIG. The two sheets 6a and 6b are joined between them.

As the front sheet 6a and the back sheet 6b constituting the absorbent body 6, each of them can be used without particular limitation as long as it is used for absorbent articles such as disposable diapers. For example, as the front sheet 6a, a hydrophilic and liquid-permeable non-woven fabric or the like can be used, and as the back sheet 6b, a liquid-impermeable or water-repellent resin film or a laminate of a resin film and a non-woven fabric can be used. As the absorber 6c, it is possible to use an aggregate (or non-woven fabric) coated with pulp fibers and other fibers covered with a core-wrap made of water-permeable tissue or non-woven fabric, or to keep the particles of water-absorbing polymer in the aggregate. Sexual core and so on.

Next, a preferred embodiment of the manufacturing method of the absorbent article of the present invention will be described with reference to the drawings, referring to the case of manufacturing the diaper 1 having the waist panel 2 having the above-mentioned uneven structure. In FIGS. 2 and 3, a manufacturing apparatus 100 that is preferably used in the manufacturing method of the diaper 1 is schematically shown. In addition, as described above, the waist panel 2 is continuously provided on the left and right outer sides of the back side portion B of the absorbent body 6. Therefore, a pair of left and right manufacturing apparatuses 100 are required. Only one manufacturing device 100 is shown in 2.

In FIGS. 2 and 3, the direction indicated by the symbol x (x direction) represents the transport direction (MD, Machine Direction), and the direction indicated by the symbol y (y direction) is the direction orthogonal to the transport direction (x direction) . The conveying direction (x direction) is also the same as the conveying direction of the continuum of the diaper 1 with the waist panel 2 attached and finally manufactured by the present embodiment.

As shown in FIGS. 2 and 3, the manufacturing apparatus 100 includes an intermittent cutting transfer device 30 as a cutting device including an anvil roll 10 having a bottom knife 11 on a peripheral surface (surface) 10f and a surface (Peripheral surface) 20f has a cutter member 20 of a cutter 21 that is in contact with the bottom knife 11. In the manufacturing apparatus 100 of this embodiment, the cutter member 20 is a cutter roll 20 having a cutter 21 on the peripheral surface 20f. The anvil roll 10 and the cutter roll 20 rotate in opposite directions in the manufacturing apparatus 100.

The intermittent cutting transfer device 30 is configured to supply the continuous belt-shaped uneven sheet 2B having an uneven structure to the anvil rolls rotating in opposite directions so as to be wound around the peripheral surface 10f of the anvil roll 10 in the manufacturing apparatus 100 10 and the cutter roll 20, the bottom knife 11 and the cutter 21 provided between the anvil roll 10 and the cutter roll 20 are brought into contact, and the band-shaped uneven sheet 2B is cut intermittently in the y direction; and The waist sheet 2 formed as a short strip-shaped concavo-convex sheet by the cutting is transferred to and adhered to the belt-shaped front sheet 6a constituting the absorbent body 6 at specific intervals.

In the intermittent cutting transfer device 30, it is necessary to intermittently transfer and bond the waist sheet 2 of the uneven sheet to the belt-shaped front sheet 6a. Therefore, by supplying the belt-shaped uneven sheet 2B at a speed slower than the rotational speed of the anvil roll 10, the belt-shaped uneven sheet 2B is slid on the peripheral surface 10f of the anvil roll 10 to cut the belt-like uneven sheet 2B Cut off, thereby forming the waist sheet 2 of the uneven sheet.

The anvil roller 10 of the intermittent cutting transfer device 30 is provided with a metal roller body 10B. As shown in FIG. 4, on the peripheral surface 10f of the roller body 10B, there is a groove 13 having a suction hole 12, and the groove 13 corresponds to The short strip-shaped uneven sheet is formed at the position of the convex portion 2t of the waist sheet 2. In this embodiment, the suction hole 12 is provided at the bottom 13b of the groove 13. The anvil roll 10 is preferably in the manufacturing apparatus 100, as shown in FIGS. 2 and 3 As shown, there are a plurality of lateral holes 14 extending from an end surface 10e1 of the roller body 10B in an orthogonal direction (y direction), and a plurality of suction holes communicating with the lateral holes 14 and extending in the circumferential direction of the anvil roller 10 12 (refer to FIG. 4) and at least one bed knife 11 provided on the peripheral surface 10f. In addition, a plurality of suction holes 12 are arranged at specific intervals at the bottom 13b of the groove 13.

As shown in FIGS. 2 to 4, the bottom knife 11 of the anvil roll 10 is arranged on the peripheral surface 10f so as to extend along the axial direction (y direction) of the roller body 10B, and is fixed in such a manner that its blade tip protrudes from the peripheral surface 10f. On the roller body 10B. In the manufacturing apparatus 100, a pair of bed knives 11 are arranged at positions facing the roller body 10B.

The groove 13 of the anvil roll 10 is formed on the peripheral surface 10f corresponding to the position of the convex portion 2t of the uneven sheet. Moreover, the extending direction of the convex portion 2t of the uneven sheet and the extending direction of the groove 13 of the anvil roll 10 are the same direction. Here, the extending direction of the convex portion 2t of the uneven sheet is the extending direction of the convex portion 2t with respect to the conveying direction of the uneven sheet, and the extending direction of the groove 13 of the anvil roll 10 is the rotation direction of the groove 13 with respect to the anvil roll 10 Extension direction. In this way, if the convex portion 2t and the groove 13 extend in the same direction, the uneven sheet can be stably conveyed. Preferably, in the manufacturing apparatus 100, as shown in FIGS. 2 and 4, since the convex portion 2t extends in the conveying direction (x direction), the groove 13 of the anvil roll 10 extends along the circumferential direction of the anvil roll 10. In this manner, a plurality of grooves 13 extending in the circumferential direction of the circumferential surface 10f are arranged at intervals in the axial direction of the roller body 10B in the manufacturing apparatus 100.

From the viewpoint of stably transporting the formed waist sheet 2, the groove 13 of the anvil roll 10 should be formed at least in the peripheral surface 10 f of the anvil roll 10 and held and transported as a portion of the waist sheet 2 that is a short-shaped concave-convex sheet. However, from the viewpoint of more stably transporting the band-shaped concavo-convex sheet 2B and the waist sheet 2, in the manufacturing apparatus 100, as shown in FIGS. 2 and 4, not only is formed on the surface of the portion where the waist sheet 2 is transported, but also The surface formed on the portion where the belt-shaped uneven sheet 2B is transported is formed over the entire circumference of the anvil roll 10 except the portion where the bottom knife 11 is disposed. An anvil with a groove 13 is formed throughout the entire circumference except the bottom knife 11 portion In the roller 10, the groove 13 has a first groove portion 131 and a second groove portion 132 formed on the downstream side of the roller rotation direction based on the bottom knife 11 and conveying a waist piece formed by cutting In the portion 2, the second groove portion 132 is formed in a portion where the belt-shaped uneven sheet 2B is conveyed on the upstream side in the roller rotation direction based on the bottom knife 11. In this embodiment, the pair of bottom blades 11 are arranged at opposite positions. Therefore, the roller body 10B is divided into a normal line connecting the center of the diameter of the roller body 10B of a pair of bottom blades 11 arranged at opposite positions. In the two parts, a first groove portion 131 is provided on the downstream side of each bottom blade 11 in the roller rotation direction, and a second groove portion 132 is provided on the upstream side of each bottom blade 11 in the roller rotation direction. Further, from the viewpoint of more stably transporting the belt-shaped uneven sheet 2B and the waist panel 2, the depth of the groove of the first groove 131 is formed to be greater than the depth of the groove of the second groove 132.

In order to stably transport the belt-shaped uneven sheet 2B and the waist sheet 2, it is preferable that the convex portion 2t easily enters the groove 13 of the anvil roller 10. Therefore, as shown in FIG. 5, the groove width W1 of the groove 13 of the anvil roll 10 is preferably wider than the width W2 of the belt-shaped uneven sheet 2B and the convex portion 2t of the waist panel 2. The width W2 of the convex portion 2t is the length at the widest position among the lengths of the convex portion 2t in the orthogonal direction (y direction). From the same viewpoint, the ratio (W1/W2) of the groove width W1 of the groove 13 to the width W2 of the convex portion 2t is preferably 1.1 or more, more preferably 2.0 or more, and further preferably 5.0 or less, more preferably It is 3.0 or less, specifically, preferably 1.1 or more and 5.0 or less, and more preferably 2.0 or more and 3.0 or less.

In particular, in this embodiment, the band-shaped concave-convex sheet 2B has two sheets 3, 4 and a plurality of linear elastic bodies 5 disposed between the two sheets 3, 4 and the convex portion 2t The extending direction intersects the extending direction of the linear elastic body 5, more specifically, in a natural state, the linear elastic body 5 shrinks to form a plurality of convex portions 2t that extend in the longitudinal direction (X direction) Because of the wrinkle, the gap between the convex portion 2t entering the groove 13 and the groove 13 is not easily generated by the contraction force of the linear elastic body 5, and the suction force is increased, so that the belt-shaped uneven sheet 2B can be transported more stably And waist film 2.

The lateral holes 14 of the anvil roll 10 are arranged at specific intervals in the circumferential direction of the roll. Each horizontal hole 14 Formed into a round shape. Each lateral hole 14 is formed parallel to the axial direction of the roller body 10B, and penetrates from one end surface 10e1 to the other end surface 10e2. Each lateral hole 14 is closed on the other end surface 10e2 side by a ring-shaped sealing member (not shown).

The suction holes 12 of the anvil roll 10 are arranged corresponding to the lateral holes 14 and extend between the lateral holes 14 and the groove 13. In other words, one end of the suction hole 12 communicates with the lateral hole 14 and the other end is disposed at the bottom 13b of the groove 13. The suction holes 12 are arranged at the bottom 13b of the groove 13, so in the manufacturing apparatus 100, as shown in FIG. 4, they are arranged at intervals in the circumferential direction of the anvil roll 10 and at intervals in the axial direction of the roll body 10B And configuration. Each suction hole 12 is formed in a circular shape.

A suction ring (not shown) is arranged on one end surface 10e1 of the anvil roll 10. The suction ring (not shown) is fixed to one end face 10e1 side of a pair of drive shaft support members (not shown) that rotatably supports the roller body 10B of the anvil roll 10. That is, the suction ring (not shown) does not rotate with the anvil roller 10. Further, the suction ring (not shown) is formed as a disc body having a diameter substantially the same as the diameter of the roller body 10B. The suction ring (not shown) has a plurality of mutually independent space regions inside. In the manufacturing apparatus 100, as shown in FIG. 3, it has three space regions: a space region a, a space region b, and a space region c.

The space area a of the suction ring (not shown) corresponds to the cutting of the bottom knife 11 and the cutter roll 20 of the anvil roll 10 that supplies the band-shaped uneven sheet 2B wound on the circumferential surface 10f to the anvil roll 10 The area between the blades 21. In addition, the space area b of the suction ring (not shown) corresponds to the anvil roll 10 where the waist sheet 2 which is a short strip-shaped uneven sheet cut by the anvil roll 10 and the cutter roll 20 is attached to the front surface of the belt The area up to the sheet 6a. The space area c of the suction ring (not shown) corresponds to the area in the anvil roll 10 until the waist sheet 2 is attached to the belt-shaped front sheet 6a and then receives the belt-shaped uneven sheet 2B again.

An intake fan (not shown) is connected to the suction ring (not shown), and the pressure of the space area a, the space area b, and the space area c, which are independent of each other, can be adjusted by the drive of the intake fan in the manufacturing device In 100, the space area a is maintained at a negative pressure, and the space area b is maintained at a negative pressure higher than the space area a, The space area c is maintained at atmospheric pressure (pressure is zero). The suction air generated by the intake fan (not shown) passes through the suction ring (not shown) to the lateral hole 14 formed in the roller body 10B of the anvil roller 10. Furthermore, the suction air passes through the lateral hole 14 to the suction hole 12 disposed at the bottom 13 b of the groove 13 formed on the peripheral surface 10 f of the roller body 10B. Therefore, in the space area a of the suction ring (not shown), the belt-shaped concavo-convex sheet is made by sucking air through the plurality of lateral holes 14 located at positions corresponding to the space area a to the suction hole 12 2B is sucked to the surface 10f of the anvil roll 10. Then, in the space area b of the suction ring (not shown), the lumbar sheet 2 is sucked by sucking air through the plurality of lateral holes 14 located at positions corresponding to the space area b to the suction hole 12 To the surface 10f of the anvil roll 10. Furthermore, the suction ring (not shown) is fixed to the drive shaft support member (not shown) independently of the anvil roll 10, so even if the anvil roll 10 rotates, the positions of the space area a, space area b, and space area c It will not change, and the range of the suction air is always fixed.

The cutter roller 20 of the intermittent cutting transfer device 30 is a metal roller, and as shown in FIGS. 2 and 3, is arranged adjacent to the anvil roller 10 so as to sandwich the band-shaped uneven sheet 2B. In the manufacturing apparatus 100, a pair of cutters 21, 21 for cutting the band-shaped concave-convex sheet 2B are arranged in the cutter roll 20 in contact with a pair of bottom cutters 11, 11 of the anvil roll 10, respectively. The pair of cutters 21 and 21 are arranged at opposite positions of the cutter roller 20, and are fixed so that the blade tip protrudes from the surface 20f of the cutter roller 20.

The cutter roller 20 and the anvil roller 10 rotate in opposite directions, and are controlled to rotate so that the cutters 21 and 21 contact the bottom blades 11 and 11 of the anvil roller 10. That is, while the anvil roller 10 and the cutter roller 20 rotate one revolution, the one cutter 21 is in contact with the one bottom knife 11 and the other cutter 21 is in contact with the other bottom knife 11 in relation to the anvil roller. 10 Rotate the cutter roller 20 as described above.

The manufacturing apparatus 100 has a pair of drive rollers 41 and 42 that feed the belt-shaped uneven sheet 2B to one of the anvil rollers 10. The rotation of the drive rollers 41 and 42 is controlled in such a manner that the supply speed of the band-shaped uneven sheet 2B is slower than the peripheral speed of the anvil roller 10.

Next, a method of manufacturing the diaper 1 having the waist panel 2 having an uneven structure using the manufacturing apparatus 100 described above will be described.

The method for manufacturing an absorbent article of the present invention includes a conveying step of conveying the concavo-convex sheet to a belt-shaped sheet as a belt-shaped object to be conveyed. In the manufacturing method of the diaper 1, the band-shaped concavo-convex sheet 2B and the stretchable waist panel 2 correspond to the above-mentioned concavo-convex sheet, and the band-shaped front sheet 6a corresponds to the above-mentioned band-shaped sheet (belt-shaped to-be-transported object). The conveyance step of this embodiment mode uses an intermittent cutting and transferring device 30 which includes an anvil roller 10 having a bottom knife 11 on the peripheral surface 10f and a contact with the bottom knife 11 on the surface 20f. The cutter member of the cutter 21 is a cutter roller 20.

Hereinafter, the manufacturing method of the diaper 1 of this embodiment using the manufacturing apparatus 100 will be specifically described.

The band-shaped concave-convex sheet 2B which is the raw material of the elastic waist sheet 2 can be obtained, for example, by the manufacturing method of the elastic sheet described in Japanese Patent Laid-Open No. 2012-090835, Japanese Patent Laid-Open No. 2012-090836, etc. manufacture. The band-shaped concavo-convex sheet 2B manufactured by this manufacturing method has a convex portion 2t extending in the longitudinal direction (X direction) by contraction of the linear elastic body 5. In addition, before the band-shaped uneven sheet 2B is wound around the peripheral surface 10f of the anvil roll 10, an adhesive is applied to the portion where it is attached to the band-shaped back sheet 6b.

First, in the space area a and the space area b of the suction ring (not shown) of the manufacturing apparatus 100, the connected intake fan (not shown) is actuated to make it a negative pressure. By making negative pressure in the space area a and the space area b of the suction ring (not shown), the suction air is passed through the plurality of lateral holes 14 located at the positions corresponding to the space area a and the space area b The suction hole 12 of the groove 13. By sucking air from the suction hole 12, the uneven sheet is sucked to the surface 10 f of the anvil roller 10. Next, the anvil roller 10 included in the intermittent cutting transfer device 30 is rotated, and the cutter roller 20 included in the intermittent cutting transfer device 30 is rotated in the opposite direction to the rotation direction of the anvil roller 10.

In the present embodiment, the belt-shaped front sheet 6a is fed to the downstream side of the anvil roll 10 in the rotation direction of the anvil roll 10 (including a suction ring (not shown)) at the same supply speed as the peripheral speed of the anvil roll 10 The part of the boundary between the space area b and the space area c) is transported.

Then, the belt-shaped uneven sheet 2B is supplied to the peripheral surface 10 f of the anvil roller 10 by a pair of drive rollers 41 and 42. Here, by controlling the rotation of the drive rollers 41 and 42, the belt-shaped uneven sheet 2B is supplied to the peripheral surface 10 f of the anvil roller 10 at a feed speed slower than the peripheral speed of the anvil roller 10. The belt-shaped concave-convex sheet 2B supplied to the peripheral surface 10f of the anvil roller 10 is sucked by the suction air from the suction hole 12 of the groove 13 to the anvil at a position corresponding to the space area a of the suction ring (not shown) The surface 10f of the roller 10 is in a state of being wound around the peripheral surface 10f. Then, the band-shaped uneven sheet 2B is conveyed between the bottom knife 11 of the anvil roll 10 and the cutter 21 of the cutter roll 20 in a state of being wound around the surface 10 f of the anvil roll 10. As described above, the supply speed of the belt-shaped uneven sheet 2B is slower than the peripheral speed of the anvil roll 10, and therefore, the belt-shaped uneven sheet 2B is transported to the bottom knife 11 and the cutter while sliding on the peripheral surface of the anvil roll 10 Between 21. Here, the circumferential surface 10f of the anvil roll 10 used in the conveying step of this embodiment has a groove 13 with a suction hole 12 at the bottom 13b, and the groove 13 is formed corresponding to the position of the convex portion 2t of the uneven sheet 2B . In the conveying step of this embodiment, as shown in FIG. 5, the belt-shaped uneven sheet 2B is sucked and conveyed through the suction hole 12 of the anvil roll 10. It is preferable to carry out the conveyance in a state where the convex portion 2t of the belt-shaped uneven sheet 2B enters the groove 13 of the peripheral surface 10f of the anvil roll 10. In the present embodiment, as described above, the belt-shaped uneven sheet 2B is transported in a state where the convex portion 2t of the belt-shaped uneven sheet 2B enters the groove 13 of the anvil roll 10, and therefore, it can be stably transported to the anvil Between the bottom knife 11 of the roller 10 and the cutting knife 21 of the cutting roller 20. Therefore, the diaper 1 can be manufactured stably. Further, the band-shaped concave-convex sheet 2B has two sheets 3, 4 and a plurality of linear elastic bodies 5 arranged between the two sheets 3, 4 in an extended state, and the extending direction of the convex portion 2t is linear elastic The extension direction of the body 5 crosses. Specifically, in the band-shaped concave-convex sheet 2B, in a natural state, the plurality of linear elastic bodies 5 are contracted to form a plurality of them in the longitudinal direction (X direction) The wrinkle of the extended convex portion 2t. Therefore, when the convex portion 2t of the belt-shaped concave-convex sheet 2B enters the groove 13 of the peripheral surface 10f of the anvil roll 10 and is transported, the shrinkage force of the linear elastic body 5 enters the groove 13 The gap between the convex portion 2t and the groove 13 is less likely to be generated. As a result, the suction force to the band-shaped uneven sheet 2B is increased, and the band-shaped uneven sheet 2B can be transported more stably.

Then, the belt-shaped uneven sheet 2B that is transported between the bottom knife 11 of the anvil roll 10 and the cutter 21 of the cutter roll 20 is cut by the contact of the bottom knife 11 and the cutter 21 to form a short Waist sheet 2 of strip-shaped concave-convex sheet. In this manner, in the conveying step of the present embodiment, the belt-shaped uneven sheet 2B is supplied between the anvil roll 10 and the cutter roll 20, and is cut intermittently to form a waist strip as a short-shaped uneven sheet 2.

That is, the belt-shaped concave-convex sheet 2B is cut by the bottom knife 11, and therefore, the portion located in front of the bottom knife 11, in other words, is drawn downstream of the anvil roll 10 in the rotation direction of the anvil roll 10 based on the bottom knife 11 The part to be held is formed into a short strip-shaped concave-convex sheet.

Then, the waist piece 2 formed as a concave-convex sheet is sucked by the suction air from the suction hole 12 of the groove 13 to the surface of the anvil roll 10 at a position corresponding to the space area b of the suction ring (not shown) 10f is in a state of being wound around the peripheral surface 10f. Then, the waist sheet 2 is conveyed to the downstream side in a state of being wound around the surface 10f of the anvil roll 10, and is transferred and adhered to the belt-shaped front sheet 6a conveyed at specific intervals. Here, the circumferential surface 10f of the anvil roll 10 used in the conveyance step of this embodiment has a groove 13 having a suction hole 12 at the bottom 13b, and the groove 13 is formed corresponding to the position of the convex portion 2t of the waist panel 2. Then, in the conveying step of the present embodiment, as shown in FIG. 5, the waist sheet 2 is sucked through the suction hole 12 of the anvil roll 10 to be conveyed. It is preferable to carry out the conveyance in a state where the convex portion 2t of the waist piece 2 enters the groove 13 of the peripheral surface 10f of the anvil roll 10. In the present embodiment, as described above, the lumbar sheet 2 is transported in a state where the convex portion 2t of the waist sheet 2 which is an uneven sheet enters the groove 13 of the anvil roll 10. Therefore, when the anvil roll 10 is used for transport It is not easy to slide on the peripheral surface 10f of the anvil roller 10, but The conveyance is carried out stably until it is bonded to the belt-shaped back sheet 6b. Furthermore, when the convex portion 2t of the waist piece 2 enters the groove 13 of the peripheral surface 10f of the anvil roll 10 and is conveyed, it is not easy to enter the groove 13 due to the contraction force of the linear elastic body 5 A gap is formed between the convex portion 2t and the groove 13, and as a result, the suction power to the waist panel 2 is increased, and the waist panel 2 can be transported more stably. Therefore, the diaper 1 can be manufactured stably.

In the conveying step of this embodiment, the extending direction (x direction) of the convex portion 2t of each of the belt-shaped uneven sheet 2B which is the uneven sheet and the waist portion 2 of the uneven sheet and the groove 13 of the anvil roll 10 The extending direction is the same direction. It is preferable that the groove 13 of the anvil roll 10 extends along the circumferential direction of the anvil roll 10 and is the same direction as the extending direction (x direction) of the convex portion 2t of each of the uneven sheet 2B and the waist sheet 2. Therefore, as shown in FIG. 5, the convex portion 2 t easily enters the groove 13 of the anvil roller 10, and can be transported more stably, so that the diaper 1 can be manufactured more stably.

The groove 13 of the anvil roll 10 used in the conveying step of the present embodiment has a first groove 131 at a portion located downstream of the bottom knife 11 in the roll rotation direction and conveying the waist piece 2 of the short strip-shaped uneven sheet. Therefore, as shown in FIG. 5, the convex portion 2 t easily enters the groove 13 of the anvil roller 10, and can be transported more stably, so that the diaper 1 can be manufactured more stably.

In addition, the groove 13 of the anvil roll 10 used in the conveying step of this embodiment not only has the first groove portion 131, but also has a groove size different from the first groove portion 131 on the upstream side of the bottom knife 11 in the roller rotation direction之第2槽部132。 The second groove 132. In this way, the groove 13 of the anvil roll 10 is formed over the entire circumference of the anvil roll 10 except for the bottom knife 11 portion. Therefore, as shown in FIG. 5, the convex portion 2t easily enters the groove 13 of the anvil roll 10, and can be more The diaper 1 can be manufactured more stably by carrying it stably. In particular, the depth of the groove of the first groove portion 131 is formed to be greater than the depth of the groove of the second groove portion 132. Therefore, the suction force of the first groove portion 131 can be increased compared to the suction force of the second groove portion 132. The second groove portion 132 slides the band-shaped uneven sheet 2B on the circumferential surface of the anvil roll 10 to carry it securely, and the formed waist sheet 2 passes through the bottom The first groove portion 131 on the downstream side of the knife 11 is reliably held, so that it can be transported more stably.

With regard to the belt-shaped front sheet 6a to which the waist sheet 2 is attached at intervals, the absorbent body 6c is intermittently arranged on the belt-shaped front sheet 6a intermittently in the conveying direction (x direction). A band-shaped back sheet 6b is arranged on the absorber 6c which is arranged so as to be arranged. Then, the belt-shaped back sheet 6b and the belt-shaped front sheet 6a are fixed and integrated by sandwiching the intermittently arranged absorber 6c, thereby forming a continuous body of the diaper 1. In this way, a continuous body of the diaper 1 to which the waist panel 2 is attached is manufactured. The continuous body of the diaper 1 is cut to the size of each diaper 1 having one absorber 6c by a known cutting method (not shown), whereby a plurality of diapers 1 can be manufactured in sequence. Furthermore, the hook-and-loop fastener 7 is preferably intermittently adhered to the strip-shaped uneven sheet 2B using an adhesive in advance.

The manufacturing method of the absorbent article of the present invention is not limited to the above-mentioned embodiment, and can be appropriately changed.

For example, in the above embodiment, the belt-shaped uneven sheet 2B and the stretchable waist sheet 2 correspond to the uneven sheet having an uneven structure, and the belt-shaped front sheet 6a corresponds to the band sheet to which the uneven sheet is bonded (Belt-shaped object to be conveyed), but the uneven sheet having an uneven structure is not limited to the belt-like uneven sheet 2B and the stretchable waist sheet 2. In addition, the belt-shaped sheet (belt-shaped object to be conveyed) to which the uneven sheet is bonded may be a sheet constituting an absorbent article other than the belt-shaped front sheet 6a.

In addition, in the above embodiment, as shown in FIG. 2, the groove 13 of the anvil roll 10 extends along the circumferential direction of the anvil roll 10 and is a band-shaped concavo-convex sheet 2B which is an uneven sheet and a waist sheet 2 which is an uneven sheet The convex portions 2t of each extend in the conveying direction (x direction), so that the extending direction of the groove 13 of the anvil roll 10 and the extending direction (x direction) of the convex portions 2t of the concave-convex sheets 2B and 2 become the same direction, but it may be The groove 13 of the anvil roll 10 extends in the axial direction of the anvil roll 10, and the convex portions 2t of the concavo-convex sheets 2B and 2 extend in a direction (y direction) orthogonal to the conveying direction (x direction), so that the groove of the anvil roll 10 The extension direction of 13 becomes the same direction as the extension direction (y direction) of the convex portion 2t of the uneven sheets 2B and 2. Also, the direction of the groove 13 of the anvil roll 10 may be extended It does not become the same direction as the extending direction (y direction) of the convex portion 2t of the uneven sheet 2B, 2.

In addition, in the above-described embodiment, as shown in FIG. 4, the groove 13 is formed on the anvil roll 10 over the entire circumference except for the bottom knife 11 portion, but it may be in the following form, that is, the groove 13 is as shown in FIG. 6 Only the first groove portion 131 is formed, and the first groove portion 131 is formed on the downstream side of the roller rotation direction based on the bed knife 11 and conveys the waist sheet 2 formed by cutting. Even in this configuration, from the viewpoint of reliably conveying the belt-shaped uneven sheet 2B, it is preferable that the suction holes 12 are arranged at specific intervals throughout the entire circumference of the anvil roll 10. That is, as shown in FIG. 6, it is preferable that the suction hole 12 is arranged in the first groove on the portion where the waist blade 2 formed by cutting is carried on the downstream side of the roller rotation direction based on the base knife 11. At the bottom of 131, a groove portion is not formed at a portion where the belt-shaped uneven sheet 2B is conveyed upstream of the roller rotation direction based on the bottom knife 11 and the suction hole 12 is arranged on the peripheral surface 10f of the anvil roller.

In addition, in the above-described embodiment, as shown in FIG. 4, the groove 13 is formed on the anvil roll 10 over the entire circumference except for the bottom knife 11 portion. However, the groove 13 may be formed in the bottom knife 11 portion.

Further, the depth of the groove of the first groove portion 131 on the downstream side of the bottom blade 11 is formed to be greater than the depth of the groove of the second groove portion 132 on the upstream side of the bottom blade 11, but the depth of the groove of the first groove portion 131 and the The depth of the groove of the 2 groove portion 132 may be the same depth.

In addition, in the above embodiment, as shown in FIGS. 4 and 5, the suction hole 12 is provided at the bottom of the groove 13, but the suction hole may also be provided at the side wall portion of the groove 13.

Regarding the above-described embodiment, the following method for manufacturing an absorbent article will be disclosed.

<1>

A method for manufacturing an absorbent article, in which a short strip-shaped concavo-convex sheet formed by cutting a strip-shaped concavo-convex sheet having a concavo-convex structure is intermittently attached to a strip-shaped object to be transported A short strip-shaped concave-convex sheet is transported to the belt-shaped object to be transported, and the above-mentioned transport step uses a cutting device including an anvil having a bottom knife on the peripheral surface The roller and the cutter member having a cutter in contact with the bottom knife on the surface, and the circumferential surface of the anvil roll has a groove with a suction hole corresponding to the position of the convex portion of the short strip-shaped uneven sheet It is formed that, in the conveying step, the short strip-shaped uneven sheet is sucked and conveyed through the suction hole of the anvil roll.

<2>

The method for manufacturing an absorbent article according to the above <1>, wherein the extending direction of the convex portion of the short strip-shaped uneven sheet and the extending direction of the groove of the anvil roller are the same direction.

<3>

The method for manufacturing an absorbent article according to the above <1> or <2>, wherein the groove of the anvil roll extends in the circumferential direction of the anvil roll.

<4>

The method for manufacturing an absorbent article according to any one of the above <1> to <3>, wherein in the conveying step, the band-shaped uneven sheet is fed between the anvil roll and the cutter member and is interrupted Cut to form the short strip-shaped uneven sheet.

<5>

The method for manufacturing an absorbent article according to the above <4>, wherein the groove of the anvil roll is formed only in the peripheral surface of the anvil roll to convey the portion of the short strip-shaped uneven sheet formed by the cutting.

<6>

The method for manufacturing an absorbent article according to the above <4>, wherein the groove of the anvil roll has a first groove portion and a second groove portion on the circumferential surface of the anvil roll, the first groove portion is formed in the conveyance by the above The portion of the short strip-shaped concave-convex sheet formed by cutting, the second groove portion is formed to convey the band-shaped concave-convex In the sheet material, the depth of the groove of the first groove is greater than the depth of the groove of the second groove.

<7>

The method for manufacturing an absorbent article according to any one of the above <1> to <6>, wherein the cutter member is a cutter roll having the cutter on the peripheral surface thereof.

<8>

The method for manufacturing an absorbent article according to any one of the above <1> to <7>, wherein the belt-shaped uneven sheet is wound around the peripheral surface of the anvil roll and transported.

<9>

The method for manufacturing an absorbent article according to any one of the above <1> to <8>, wherein the band-shaped concavo-convex sheet is supplied to the anvil roll and the cutter member at a speed slower than the rotation speed of the anvil roll between.

<10>

The method for manufacturing an absorbent article according to any one of the above <1> to <9>, wherein a plurality of the suction holes are arranged at specific intervals at the bottom of the groove of the anvil roll.

<11>

The method for manufacturing an absorbent article according to any one of <1> to <10>, wherein the anvil roll is provided with a plurality of the grooves at intervals in the roll axis direction.

<12>

The method for manufacturing an absorbent article according to any one of <1> to <11> above, wherein the anvil roll is provided with a plurality of the bottom knives on the circumferential surface.

<13>

The method for manufacturing an absorbent article according to any one of the above <1> to <12>, wherein the above The groove width W1 of the groove of the anvil roll is wider than the width W2 of the convex portion of the band-shaped uneven sheet.

<14>

The method for manufacturing an absorbent article as described in the above <13>, wherein the ratio W1/W2 of the groove width W1 of the groove of the anvil roll to the width W2 of the convex portion of the band-shaped uneven sheet is 1.1 or more , Preferably 2.0 or more, and 5.0 or less, preferably 3.0 or less, specifically, 1.1 or more and 5.0 or less, preferably 2.0 or more and 3.0 or less.

<15>

The method for manufacturing an absorbent article according to any one of the above <1> to <14>, wherein the convex portion of the band-shaped uneven sheet is transported in a state where the groove of the anvil roll enters the groove.

<16>

The method for manufacturing an absorbent article according to any one of the above <1> to <15>, wherein the band-shaped concavo-convex sheet has two sheets and a plurality of linear elastic bodies disposed between the two sheets, In a natural state, the shrinkage of the linear elastic body forms the wrinkles of the convex portions that become the uneven sheet.

<17>

The method for manufacturing an absorbent article according to any one of the above <1> to <12>, wherein the band-shaped concavo-convex sheet has two sheets and a plurality of linear elastomers disposed between the two sheets , The extending direction of the convex portion of the band-shaped concavo-convex sheet intersects the extending direction of the linear elastic body, the extending direction of the convex portion of the band-shaped concavo-convex sheet is the same as the extending direction of the groove of the anvil roll In the direction, the groove width W1 of the groove of the anvil roll is wider than the width W2 of the convex portion of the band-shaped uneven sheet.

<18>

The method for manufacturing an absorbent article according to the above <17>, wherein the band-shaped concavo-convex sheet is formed in a natural state by the shrinkage of the linear elastic body to form a plurality of wrinkles that become the convex portions of the band-shaped concavo-convex sheet fold.

<19>

An apparatus for manufacturing an absorbent article, which is formed by cutting a strip-shaped concavo-convex sheet having a concavo-convex structure and intermittently attaching a strip-shaped concavo-convex sheet to a conveyed belt-shaped object to be conveyed, which is provided with a cut The cutting device includes an anvil roll having a bottom knife on the peripheral surface and a cutter member having a cutter on the surface in contact with the bottom knife, the peripheral surface of the anvil roll has a groove with a suction hole, The groove is formed corresponding to the position of the convex portion of the short strip-shaped uneven sheet, and the extending direction of the convex portion of the short strip-shaped uneven sheet is the same as the extending direction of the groove of the anvil roll.

<20>

The apparatus for manufacturing an absorbent article as described in <19> above, wherein the groove of the anvil roll extends in the circumferential direction of the anvil roll.

<21>

The apparatus for manufacturing an absorbent article according to the above <19> or <20>, wherein the groove of the anvil roll is formed only on the downstream side of the anvil roll in the rotation direction of the anvil roll based on the bottom knife.

<22>

The apparatus for manufacturing an absorbent article according to the above <19> or <20>, wherein the groove of the anvil roll has a first groove portion and a second groove portion, the first groove portion is formed on the basis of the bottom knife as the above On the downstream side of the anvil roll rotation direction, the second groove portion is formed on the basis of the bottom knife as a reference to the anvil roll rotation direction To the upstream side, the depth of the groove of the first groove is greater than the depth of the groove of the second groove.

<23>

The apparatus for manufacturing an absorbent article according to any one of <19> to <22>, wherein the cutter member is a cutter roll having the cutter on the peripheral surface thereof.

<24>

The apparatus for manufacturing an absorbent article according to any one of the above <19> to <23>, wherein a plurality of the suction holes are arranged at specific intervals at the bottom of the groove of the anvil roll.

<25>

The apparatus for manufacturing an absorbent article according to any one of <19> to <24>, wherein the anvil roll is provided with a plurality of the grooves at intervals in the roll axis direction.

<26>

The apparatus for manufacturing an absorbent article according to any one of <19> to <25>, wherein the anvil roll is provided with a plurality of the bottom knives on the circumferential surface.

<27>

The apparatus for manufacturing an absorbent article according to any one of <19> to <26>, wherein the groove width W1 of the groove of the anvil roll is wider than the width W2 of the convex portion of the band-shaped uneven sheet.

<28>

An apparatus for manufacturing an absorbent article as described in <27> above, wherein the ratio of the groove width W1 of the groove of the anvil roll to the width W2 of the convex portion of the band-shaped uneven sheet is W1/W2 of 1.1 or more, which is It is preferably 2.0 or more, and 5.0 or less, preferably 3.0 or less, specifically, 1.1 or more and 5.0 or less, preferably 2.0 or more and 3.0 or less.

<29>

The apparatus for manufacturing an absorbent article according to any one of the above <19> to <28>, wherein the band-shaped concavo-convex sheet has two sheets and a plurality of linear elastic bodies disposed between the two sheets, In a natural state, the shrinkage of the linear elastic body forms the wrinkles of the convex portions that become the uneven sheet.

<30>

The apparatus for manufacturing an absorbent article according to any one of the above <19> to <26>, wherein the band-shaped concavo-convex sheet has two sheets and a plurality of linear elastic bodies disposed between the two sheets , The extending direction of the convex portion of the band-shaped concavo-convex sheet intersects the extending direction of the linear elastic body, the extending direction of the convex portion of the band-shaped concavo-convex sheet is the same as the extending direction of the groove of the anvil roll In the direction, the groove width W1 of the groove of the anvil roll is wider than the width W2 of the convex portion of the band-shaped uneven sheet.

<31>

An apparatus for manufacturing an absorbent article according to the above <30>, wherein the band-shaped concavo-convex sheet is formed in a natural state by the shrinkage of the linear elastic body to form the wrinkles of the convex portions that become the band-shaped concavo-convex sheet .

[Industry availability]

According to the present invention, the uneven-shaped sheet can be stably transported, whereby the absorbent article can be stably manufactured.

2‧‧‧ waist film

2B‧‧‧ribbed concavo-convex sheet

2t‧‧‧Convex

6a‧‧‧Front sheet

10‧‧‧Anvil roll

10B‧‧‧Roll body

10f‧‧‧The peripheral surface of the roller body

10e1‧‧‧End face of roller body

10e2‧‧‧End face of roller body

11‧‧‧Bottom knife

13‧‧‧slot

14‧‧‧Horizontal hole

20‧‧‧Cutter component

20f‧‧‧Circular surface of cutter member

21‧‧‧Cutter

30‧‧‧Intermittent cutting transfer device

41‧‧‧Drive roller

42‧‧‧Drive roller

100‧‧‧Manufacturing device

x‧‧‧Conveying direction

y‧‧‧ orthogonal to the direction of transport

Claims (31)

A method for manufacturing an absorbent article, in which a short strip-shaped concavo-convex sheet formed by cutting a strip-shaped concavo-convex sheet having a concavo-convex structure is intermittently attached to a strip-shaped object to be transported, and is provided with The step of conveying the strip-shaped concavo-convex sheet to the above-mentioned belt-shaped object to be conveyed uses a cutting device including an anvil roller having a bottom knife on the peripheral surface, and a bottom knife on the surface The cutter member of the contact cutter has a groove with suction holes on the peripheral surface of the anvil roll, the groove is formed corresponding to the position of the convex portion of the short strip-shaped concave-convex sheet, in the above-mentioned conveying step, The short strip-shaped concavo-convex sheet is sucked and transported through the suction hole of the anvil roll. The method for manufacturing an absorbent article according to claim 1, wherein the extending direction of the convex portion of the short strip-shaped uneven sheet and the extending direction of the groove of the anvil roller are the same direction. The method of manufacturing an absorbent article according to claim 1, wherein the groove of the anvil roll extends in the circumferential direction of the anvil roll. The method for manufacturing an absorbent article according to claim 1, wherein in the conveying step, the band-shaped concavo-convex sheet is fed between the anvil roll and the cutter member, and is intermittently cut to form the short strip Shaped bumpy sheet. The method for manufacturing an absorbent article according to claim 4, wherein the groove of the anvil roll is formed only on a portion of the short strip-shaped concave-convex sheet formed by the cutting on the peripheral surface of the anvil roll. The method for manufacturing an absorbent article according to claim 4, wherein the groove of the anvil roller has a first groove portion and a second groove portion on the circumferential surface of the anvil roller, the first groove portion is formed in the conveyance by the above cut The portion of the short strip-shaped concavo-convex sheet formed by breaking, the second groove portion is formed in a portion where the band-shaped concavo-convex sheet is conveyed, and the depth of the groove of the first groove portion is greater than the depth of the groove of the second groove portion . The method for manufacturing an absorbent article according to claim 1, wherein the cutter member is a cutter roll having the cutter on the peripheral surface thereof. The method for manufacturing an absorbent article according to claim 1, wherein the belt-shaped uneven sheet is wound around the peripheral surface of the anvil roll and transported. The method for manufacturing an absorbent article according to claim 1, wherein the band-shaped concavo-convex sheet is supplied between the anvil roll and the cutter member at a speed slower than the rotation speed of the anvil roll. The method for manufacturing an absorbent article according to claim 1, wherein a plurality of the suction holes are arranged at specific intervals at the bottom of the groove of the anvil roll. The method for manufacturing an absorbent article according to claim 1, wherein the anvil roll is provided with a plurality of the grooves at intervals in the roll axis direction. The method for manufacturing an absorbent article according to claim 1, wherein the anvil roll is provided with a plurality of the bottom knives on the circumferential surface. The method for manufacturing an absorbent article according to claim 1, wherein the groove width W1 of the groove of the anvil roll is wider than the width W2 of the convex portion of the band-shaped uneven sheet. The method for manufacturing an absorbent article according to claim 13, wherein the ratio of the groove width W1 of the groove of the anvil roll to the width W2 of the convex portion of the belt-shaped uneven sheet is W1/W2 of 1.1 or more and 5.0 or less . The method for manufacturing an absorbent article according to claim 1, wherein the convex portion of the band-shaped uneven sheet is transported in a state where the groove of the anvil roll is brought into the groove. The method for manufacturing an absorbent article according to claim 1, wherein the band-shaped concavo-convex sheet has 2 sheets and a plurality of linear elastic bodies disposed between the 2 sheets, in a natural state, by the thread The elastic body shrinks to form the wrinkles of the convex portions of the uneven sheet. The method of manufacturing an absorbent article according to claim 1, wherein the band-shaped concavo-convex sheet has two sheets and a plurality of linear elastic bodies disposed between the two sheets, and the above-mentioned band-shaped concavo-convex sheet The extending direction of the convex portion intersects with the extending direction of the linear elastic body, the extending direction of the convex portion of the band-shaped concavo-convex sheet and the extending direction of the groove of the anvil roller are the same direction, The groove width W1 is wider than the width W2 of the convex portion of the band-shaped uneven sheet. The method for manufacturing an absorbent article according to claim 17, wherein the strip-shaped concavo-convex sheet is formed in a natural state by contraction of the linear elastic body to form a plurality of the convex portions that become the strip-shaped concavo-convex sheet Wrinkled. An apparatus for manufacturing an absorbent article, which is a device for cutting short strip-shaped concave-convex sheets formed by cutting a strip-shaped concave-convex sheet having a concave-convex structure intermittently to a conveyed belt-shaped object to be conveyed, and is provided with a cutting device The cutting device includes an anvil roll having a bottom knife on the peripheral surface and a cutter member having a cutter on the surface that contacts the bottom knife. The peripheral surface of the anvil roll has a groove with a suction hole, the The groove is formed corresponding to the position of the convex portion of the short strip-shaped uneven sheet, and the extending direction of the convex portion of the short strip-shaped uneven sheet is the same as the extending direction of the groove of the anvil roll. An apparatus for manufacturing an absorbent article according to claim 19, wherein the groove of the anvil roll extends in the circumferential direction of the anvil roll. The apparatus for manufacturing an absorbent article according to claim 19, wherein the groove of the anvil roll is formed only on the downstream side of the anvil roll in the rotating direction of the anvil roll as a reference. The apparatus for manufacturing an absorbent article according to claim 19, wherein the groove of the anvil roll has a first groove portion and a second groove portion, and the first groove portion is formed downstream of the anvil roll rotation direction based on the bottom knife The second groove is formed on the upstream side of the anvil roll in the rotation direction of the anvil roll based on the bottom knife, and the depth of the groove of the first groove is greater than the depth of the groove of the second groove. The apparatus for manufacturing an absorbent article according to claim 19, wherein the cutter member is a cutter roll having the cutter on the peripheral surface thereof. The apparatus for manufacturing an absorbent article according to claim 19, wherein at the bottom of the groove of the anvil roll, a plurality of the suction holes are arranged at specific intervals. The apparatus for manufacturing an absorbent article according to claim 19, wherein the anvil roll is provided with a plurality of the grooves at intervals in the roll axis direction. The apparatus for manufacturing an absorbent article according to claim 19, wherein the anvil roll is provided with a plurality of the bottom knives on the circumferential surface. An apparatus for manufacturing an absorbent article according to claim 19, wherein the groove width W1 of the groove of the anvil roll is wider than the width W2 of the convex portion of the band-shaped uneven sheet. An apparatus for manufacturing an absorbent article according to claim 27, wherein the ratio of the groove width W1 of the groove of the anvil roll to the width W2 of the convex portion of the belt-shaped uneven sheet is W1/W2 of 1.1 or more and 5.0 or less . An apparatus for manufacturing an absorbent article according to claim 19, wherein the band-shaped concavo-convex sheet has two sheets and a plurality of linear elastic bodies disposed between the two sheets, in a natural state, by the thread The elastic body shrinks to form the wrinkles of the convex portions of the uneven sheet. The apparatus for manufacturing an absorbent article according to claim 19, wherein the band-shaped concavo-convex sheet has two sheets and a plurality of linear elastic bodies disposed between the two sheets, and the above-mentioned band-shaped concavo-convex sheet The extending direction of the convex portion intersects with the extending direction of the linear elastic body, the extending direction of the convex portion of the band-shaped concavo-convex sheet and the extending direction of the groove of the anvil roller are the same direction, The groove width W1 is wider than the width W2 of the convex portion of the band-shaped uneven sheet. An apparatus for manufacturing an absorbent article according to claim 30, wherein the band-shaped concavo-convex sheet is formed in a natural state by the shrinkage of the linear elastic body to form the wrinkles of the convex portions of the band-shaped concavo-convex sheet .

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