JP5830624B1 - Manufacturing method and manufacturing apparatus for sheet-like member according to absorbent article - Google Patents

Abstract

A plurality of elastic members that are continuously stretched in a predetermined direction are lined in the CD direction and fixed in at least a region corresponding to the high stretch region, and are conveyed in the predetermined direction. Each of the elastic members is cut and shrunk at one point in the conveying direction to form a high stretch region and a low stretch region, and a method for producing a sheet-like member between an opposing cutter rotating body and anvil rotating body. When the continuous sheet passes, the plurality of elastic members are cut by pressing a plurality of cutter blades, which are displaced from each other in the CD direction on the outer peripheral surface of the cutter rotating body, toward the anvil rotating body, After a certain elastic member is cut by one of the plurality of cutter blades, when the one cutter blade is still being pressed, another cutter blade that cuts another elastic member next is already activated. It is pressed towards the building rotator, between the said one cutter blade and the other of the cutter blade in the CD direction, wherein at least one of the cutter blade is positioned.

Description

  The present invention relates to a method for manufacturing a sheet-like member and an apparatus for manufacturing absorbent articles such as disposable diapers.

  Conventionally, in the manufacture of disposable diapers known as absorbent articles that absorb excretory fluids such as urine, a high stretch region and a low stretch region that is less stretchable in a predetermined direction than the high stretch region are arranged in a predetermined direction. The sheet-like member which has is used.

  Such a sheet-like member 20s' is generated as follows. FIG. 1 is an explanatory view of the generation process and is a schematic plan view of the sheet-like member 20s ′.

  First, the continuous sheet 20s1 'continuous in a predetermined direction is transported with the predetermined direction as the transport direction. Further, a plurality of elastic members 27 s ′ such as rubber thread fed in the same direction in an extended state in the transport direction are supplied to the continuous sheet 20 s 1 ′ in a state of being arranged in the CD direction intersecting the transport direction. The plurality of elastic members 27s ′ are not fixed to the continuous sheet 20s1 ′ in the region AL1 ′ corresponding to the low expansion / contraction region AL ′, but in the region AH1 ′ corresponding to the high expansion / contraction region AH ′. It fixes to continuous sheet 20s1 'using an agent etc. Then, in the region AL1 ′ corresponding to the low expansion / contraction region AL ′, the plurality of elastic members 27s ′, 27s ′,... Are cut at a single PC in the transport direction, and the cut elastic members 27sd ′ are respectively cut. The regions AH1 ′ and AH1 ′ corresponding to the highly stretchable regions AH ′ and AH ′ are contracted. As a result, the high stretch region AH 'and the low stretch region AL' are formed side by side in the transport direction on the continuous sheet 20s1 '.

Special table 2014-511753

Here, the cutting of each of the elastic members 27s ′, 27s ′,... Is performed by a cutter device (not shown). The cutter device includes a cutter roll and an anvil roll that rotate while facing each other's outer peripheral surfaces. When the continuous sheet 20s1 ′ to which the elastic members 27s ′, 27s ′... Shown in FIG. 1 are passed passes between the rotating cutter roll and the anvil roll, the cutter blade on the outer peripheral surface of the cutter roll. The elastic members 27s ′, 27s ′,... And the continuous sheet 20s1 ′ are pressed together in the thickness direction by the anvil roll, thereby cutting the elastic members 27s ′, 27s ′,.
Here, when the elastic members 27s ′, 27s ′... Are cut, the cutter roll may vibrate. However, if the vibrations are large, the elastic members 27s ′, 27s ′. There is a risk of affecting.

  This invention is made | formed in view of the above conventional problems, The objective is to suppress the vibration of cutter rotary bodies, such as a cutter roll at the time of cut | disconnecting an elastic member.

A main invention for achieving the above object is a method for manufacturing a sheet-like member having a high stretch region and a low stretch region having a stretchability lower in a predetermined direction than the high stretch region in the predetermined direction. And
In a state where a plurality of elastic members extending in the predetermined direction in an extended state in the predetermined direction are arranged in a CD direction intersecting the predetermined direction, a continuous sheet fixed at least in a region corresponding to the high stretchable region, Transporting the predetermined direction as a transport direction;
By cutting each of the plurality of elastic members at one location in the transport direction in a region corresponding to the low expansion / contraction region, and contracting the plurality of elastic members toward a region corresponding to the high expansion / contraction region, Forming the high stretch region and the low stretch region in the continuous direction on the continuous sheet,
When the continuous sheet, to which the plurality of elastic members are fixed, passes between the cutter rotating body and the anvil rotating body that rotate while facing each other's outer peripheral surface, along the transport direction, the continuous sheet is The plurality of elastic members are cut by being pressed by a plurality of cutter blades provided protruding from the outer peripheral surface of the cutter rotating body,
The plurality of cutter blades are disposed on the outer peripheral surface of the cutter rotating body at positions shifted from each other in the CD direction, and a certain elastic member is formed by one cutter blade of the plurality of cutter blades. After the cutting, when the one cutter blade is still pressing the continuous sheet, among the plurality of cutter blades, the other cutter blade that cuts the other elastic member next is already the continuous blade. It is in a state of pressing the sheet,
At least one cutter blade is located at a position between the one cutter blade and the other cutter blade in the CD direction,
Absorbent article characterized in that a cutter blade corresponding to the other cutter blade exists for any cutter blade other than the cutter blade that finally cuts the elastic member among the plurality of cutter blades. It is a manufacturing method of the sheet-like member concerning.

Also,
An apparatus for manufacturing a sheet-like member having a high stretch region and a low stretch region having lower stretchability in a predetermined direction than the high stretch region, arranged in the predetermined direction,
In a state where a plurality of elastic members extending in the predetermined direction in an extended state in the predetermined direction are arranged in a CD direction intersecting the predetermined direction, a continuous sheet fixed at least in a region corresponding to the high stretchable region, A transport device that transports the predetermined direction as the transport direction;
By cutting each of the plurality of elastic members at one location in the transport direction in a region corresponding to the low expansion / contraction region, and contracting the plurality of elastic members toward a region corresponding to the high expansion / contraction region, A cutter device that forms the high stretch region and the low stretch region in the continuous direction on the continuous sheet, and
The cutter device includes a cutter rotating body and an anvil rotating body that rotate to face each other's outer peripheral surfaces, and the plurality of elastic members are fixed between the rotating cutter rotating body and the anvil rotating body. By pressing the continuous sheet with a plurality of cutter blades provided so as to protrude from the outer peripheral surface of the cutter rotating body when the continuous sheet is passed along the transport direction, the plurality of elasticity Cutting the parts,
The plurality of cutter blades are disposed on the outer peripheral surface of the cutter rotating body at positions shifted from each other in the CD direction, and a certain elastic member is formed by one cutter blade of the plurality of cutter blades. After the cutting, when the one cutter blade is still pressing the continuous sheet, among the plurality of cutter blades, the other cutter blade that cuts the other elastic member next is already the continuous blade. It is in a state of pressing the sheet,
At least one cutter blade is located at a position between the one cutter blade and the other cutter blade in the CD direction,
Absorbent article characterized in that a cutter blade corresponding to the other cutter blade exists for any cutter blade other than the cutter blade that finally cuts the elastic member among the plurality of cutter blades. It is a manufacturing apparatus of the sheet-like member which concerns on this.

  Other features of the present invention will become apparent from the description of the present specification and the accompanying drawings.

  ADVANTAGE OF THE INVENTION According to this invention, the vibration of cutter rotary bodies, such as a cutter roll at the time of cut | disconnecting an elastic member, can be suppressed.

FIG. 6 is a schematic plan view showing a process of generating a sheet-like member 20s ′ having a high stretch region AH ′ and a low stretch region AL ′. It is a schematic perspective view of the 3 piece type disposable diaper 1 as an example of the absorbent article of this embodiment. It is the schematic plan view which looked at the diaper 1 of the unfolding state from the skin side. It is the schematic plan view which looked at the same diaper 1 from the non-skin side. 5A is a cross-sectional view taken along the line AA in FIG. 3, and FIG. 5B is a cross-sectional view taken along the line BB in FIG. It is VI-VI sectional drawing in FIG. It is the schematic plan view which looked at the ventral belt member 20a from the non-skin side. It is the schematic plan view which looked at the ventral belt member 20a before cutting the rubber thread 27 from the non-skin side. FIG. 9A is a schematic plan view of the sheet-like member 20as immediately before being conveyed to the manufacturing apparatus 30 of the present embodiment, and FIG. 9B shows that the expansion areas AH and AH and the non-expandable area AL are formed by the manufacturing apparatus 30. It is a schematic plan view of the formed sheet-like member 20as. FIG. 10A is a schematic side view of the manufacturing apparatus 30, and FIG. 10B is a BB arrow view in FIG. 10A. It is explanatory drawing of the arrangement | positioning state of cutter blade C provided in the cutter block 54 of the cutter roll 51d, Comprising: It is a figure which expand | deploys and shows the outer peripheral surface 51da of the roll 51d on the plane. It is a schematic plan view of the 1st modification of the arrangement pattern of cutter blade C, C .... It is a schematic plan view of the 2nd modification of the arrangement pattern of cutter blade C, .... It is a schematic plan view of an arrangement pattern example of cutter blades C, C... Having dummy cutter blades CD1, CD9. It is a schematic plan view of an arrangement pattern in which one cutter blade C is associated with a continuous body 27s of two or three thread rubbers.

  At least the following matters will become apparent from the description of the present specification and the accompanying drawings.

A method for producing a sheet-like member having a high stretch region and a low stretch region having lower stretchability in a predetermined direction than the high stretch region, arranged in the predetermined direction,
In a state where a plurality of elastic members extending in the predetermined direction in an extended state in the predetermined direction are arranged in a CD direction intersecting the predetermined direction, a continuous sheet fixed at least in a region corresponding to the high stretchable region, Transporting the predetermined direction as a transport direction;
By cutting each of the plurality of elastic members at one location in the transport direction in a region corresponding to the low expansion / contraction region, and contracting the plurality of elastic members toward a region corresponding to the high expansion / contraction region, Forming the high stretch region and the low stretch region in the continuous direction on the continuous sheet,
When the continuous sheet, to which the plurality of elastic members are fixed, passes between the cutter rotating body and the anvil rotating body that rotate while facing each other's outer peripheral surfaces, the cutter rotating body is passed along the transport direction. The plurality of elastic members are cut by pressing a plurality of cutter blades on the outer peripheral surface toward the anvil rotating body,
The plurality of cutter blades are disposed on the outer peripheral surface of the cutter rotating body at positions shifted from each other in the CD direction, and a certain elastic member is formed by one cutter blade of the plurality of cutter blades. After the cutting, when the one cutter blade is still being pressed toward the anvil rotating body, among the plurality of cutter blades, the other cutter blade that cuts the other elastic member next, It has already been pressed toward the anvil rotor,
In the CD direction, at least one cutter blade is located at a position between the one cutter blade and the other cutter blade in the CD direction. is there.

  According to the method for manufacturing a sheet-like member according to such an absorbent article, after the one cutter blade cuts an elastic member, the cutter blade is still pressed toward the anvil rotor. The other cutter blade that cuts the other elastic member next is already pressed toward the anvil rotor. Therefore, the cutting reaction force that can act on the cutter rotating body along with the cutting can be received not only by the one cutter blade but also by the other cutter blade after the cutting. It is possible to suppress the vibration of the cutter rotating body that can be caused by the fluctuation of the reaction force of the cutting after the cutting in the two-point support state. As a result, the vibration of the cutter rotating body can be effectively suppressed.

  In addition, at least one cutter blade is located between the one cutter blade and the other cutter blade in the CD direction, so that the cutter blades that are in the two-point support state are placed in the CD direction. Can be separated greatly. That is, the support span of two-point support can be increased. This can effectively contribute to the stabilization of the two-point support state, and as a result, the vibration of the cutter rotating body can be more reliably suppressed.

  Furthermore, if at least one cutter blade is located at a position between the CD directions of two cutter blades that continuously cut in time series like the one cutter blade and the other cutter blades The elastic members at positions separated from each other in the CD direction can be continuously cut. Therefore, it is possible to effectively prevent a large number of elastic members from being continuously cut in one direction in the CD direction, and as a result, the continuous sheet meanders in the CD direction while cutting each elastic member in sequence. Thus, it is possible to effectively prevent the conveyance state of the sheet from becoming unstable.

A method for producing a sheet-like member according to such an absorbent article,
It is desirable that the one cutter blade and the other cutter blade are displaced to the same side in the CD direction as they proceed downstream in the rotation direction of the cutter rotating body.

  According to the method for manufacturing a sheet-like member according to such an absorbent article, the change in the separation distance in the CD direction between the one cutter blade and the other cutter blade can be reduced over the rotational direction. This makes it possible to stabilize the above two-point support state.

A method for producing a sheet-like member according to an absorbent article,
It is desirable that a cutter blade corresponding to the other cutter blade exists for any cutter blade other than the cutter blade that finally cuts the elastic member among the plurality of cutter blades.

  According to the method for manufacturing a sheet-like member according to such an absorbent article, any cutter blade other than the cutter blade that finally cuts the elastic member is used as the other cutter blade at least after the elastic member is cut. The two-point support state described above can be achieved in cooperation with the corresponding cutter blade. Therefore, the vibration of the cutter rotating body can be more effectively suppressed.

A method for producing a sheet-like member according to such an absorbent article,
It is preferable that one of the cutter blades is associated with each of the plurality of elastic members.

  According to the method for manufacturing a sheet-like member according to such an absorbent article, one cutter blade is associated with each of the plurality of elastic members. Therefore, compared with the case where two or more elastic members are cut with one cutter blade, the length of the portion of the continuous sheet pressed by the cutter blade can be shortened, and as a result, it can be given to the continuous sheet. Damage can be reduced.

A method for producing a sheet-like member according to such an absorbent article,
When the one cutter blade cuts the certain elastic member, it is preferable that the other cutter blade is already pressed toward the anvil rotating body.

  According to the method for manufacturing a sheet-like member according to such an absorbent article, not only after the one cutter blade cuts the elastic member, but also when the other cutter blade is already cut, It is in the state where it was pushed to the direction. Therefore, the cutting reaction force that can act on the cutter rotating body can be reliably received not only by the one cutter blade but also by the other cutter blade from the time of cutting. The vibration of the cutter rotating body that can be caused by the fluctuation of the above can be quickly suppressed in the two-point support state of the one cutter blade and the other cutter blade.

A method for producing a sheet-like member according to such an absorbent article,
It is desirable that the number of the cutter blades pressed simultaneously toward the anvil rotating body over all the cutter blades of the plurality of cutter blades is 2 or less.

  According to the manufacturing method of the sheet-like member which concerns on such an absorbent article, the number of the cutter blades simultaneously pressed toward the anvil rotary body is 2 or less. Therefore, it is possible to effectively prevent the pressing force applied to the cutter blade from being dispersed and reduced in a large number of cutter blades, and as a result, each elastic member can be reliably cut.

A method for producing a sheet-like member according to such an absorbent article,
Among the plurality of cutter blades, the number of the cutter blades simultaneously pressed toward the anvil rotating body over all the cutter blades other than the cutter blades that cut the elastic member at the beginning and the end is predetermined. It is desirable to have it in number.

  According to the manufacturing method of the sheet-like member related to such an absorbent article, the blade is simultaneously pressed toward the anvil rotating body over all the cutter blades other than the cutter blades that cut the elastic member at the beginning and the end. The number of cutter blades is aligned to a predetermined number. Therefore, the magnitude of the pressing force applied to each cutter blade at the time of cutting can be substantially uniform over all the cutter blades, and as a result, cutting of the elastic member can be effectively prevented.

A method for producing a sheet-like member according to such an absorbent article,
The predetermined number is preferably 2.

  According to the manufacturing method of the sheet-like member related to such an absorbent article, the number of cutter blades simultaneously pressed toward the anvil rotating body is equal to two. Therefore, while preventing the dispersion of the pressing force applied to each cutter blade at the time of cutting and ensuring a large pressing force, the magnitude of the pressing force can be roughly aligned over all the cutter blades described above. As a result, it is possible to more effectively prevent the elastic member from being broken.

A method for producing a sheet-like member according to such an absorbent article,
Each cutter blade that cuts the elastic member first and last among the plurality of cutter blades has a portion that does not overlap with any of the plurality of cutter blades in the rotation direction. ,
The cutter rotating body has a dummy cutter blade at a position where none of the plurality of elastic members is cut,
The dummy cutter blade is preferably provided so as to overlap in the rotational direction with respect to the non-overlapping portion.

  According to the method for manufacturing a sheet-like member according to such an absorbent article, the dummy cutter blade is provided so as to overlap in a rotation direction with respect to the non-overlapping portion. Therefore, the number of cutter blades that are simultaneously pressed toward the anvil rotator can be adjusted to a predetermined number of 2 or more even for the non-overlapping portion.

A method for producing a sheet-like member according to such an absorbent article,
It is desirable that none of the plurality of cutter blades overlap in the CD direction at the position of each blade edge.

  According to the method for manufacturing a sheet-like member according to such an absorbent article, since all the cutter blades of the plurality of cutter blades do not overlap in the CD direction at the positions of the respective blade edges, they are aligned in the CD direction. Each of the arranged elastic members can be reliably cut at one place in the lateral direction.

Also,
An apparatus for manufacturing a sheet-like member having a high stretch region and a low stretch region having lower stretchability in a predetermined direction than the high stretch region, arranged in the predetermined direction,
In a state where a plurality of elastic members extending in the predetermined direction in an extended state in the predetermined direction are arranged in a CD direction intersecting the predetermined direction, a continuous sheet fixed at least in a region corresponding to the high stretchable region, A transport device that transports the predetermined direction as the transport direction;
By cutting each of the plurality of elastic members at one location in the transport direction in a region corresponding to the low expansion / contraction region, and contracting the plurality of elastic members toward a region corresponding to the high expansion / contraction region, A cutter device that forms the high stretch region and the low stretch region in the continuous direction on the continuous sheet, and
The cutter device includes a cutter rotating body and an anvil rotating body that rotate to face each other's outer peripheral surfaces, and the plurality of elastic members are fixed between the rotating cutter rotating body and the anvil rotating body. The plurality of elastic members are cut by pressing the plurality of cutter blades on the outer peripheral surface of the cutter rotating body toward the anvil rotating body when the continuous sheet is passed along the conveying direction. ,
The plurality of cutter blades are disposed on the outer peripheral surface of the cutter rotating body at positions shifted from each other in the CD direction, and a certain elastic member is formed by one cutter blade of the plurality of cutter blades. After the cutting, when the one cutter blade is still being pressed toward the anvil rotating body, among the plurality of cutter blades, the other cutter blade that cuts the other elastic member next, It has already been pressed toward the anvil rotor,
An apparatus for manufacturing a sheet-like member according to an absorbent article, wherein at least one cutter blade is located at a position between the one cutter blade and the other cutter blade in the CD direction. is there.

  According to the manufacturing apparatus of the sheet-like member which concerns on such an absorbent article, there can exist an effect similar to the case of the manufacturing method mentioned above.

=== This Embodiment ===
The manufacturing method and the manufacturing apparatus 30 of the sheet-like member 20as which concern on the absorbent article of this embodiment are used in the manufacturing line of the disposable diaper 1 as an example of an absorbent article, for example. FIG. 2 is a schematic perspective view of a three-piece type disposable diaper 1 as an example of the disposable diaper 1. FIG. 3 is a schematic plan view of the unfolded diaper 1 as seen from the skin side, and FIG. 4 is a schematic plan view of the diaper 1 as seen from the non-skin side. 5A is a sectional view taken along line AA in FIG. 3, FIG. 5B is a sectional view taken along line BB in FIG. 3, and FIG. 6 is a sectional view taken along line VI-VI in FIG.

  As shown in FIG. 3, FIG. 5A, and FIG. 6, this diaper 1 has a vertical direction, a horizontal direction, and a thickness direction as three directions orthogonal to each other. Moreover, since the diaper 1 is what is called a three-piece type, it has the absorptive main body 10 which is applied to a wearer's crotch part and absorbs excrement, such as urine, as a 1st component, And it has the ventral side belt member 20a which covers the wearer's torso from the abdomen side, and has the back side band member 20b which covers the wearer's torso from the back side as the third part.

  In the deployed state of FIG. 3, the abdominal band member 20a and the dorsal band member 20b are arranged in parallel with a space between each other, while the absorbent main body 10 is stretched between them. End portions 10ea and 10eb in the longitudinal direction of the absorbent main body 10 are bonded and fixed to the nearest belt members 20a and 20b, respectively, and the external shape is substantially H-shaped in plan view. Also, from this state, the diaper 1 is folded in two with the substantially central portion CL10 in the longitudinal direction of the absorbent main body 10 as the folding position, and the belt members 20a, 20b facing each other in the folded state are worn by the wearer. When the portions 20ae and 20be to be brought into contact with the flank are welded and connected at the end portions 20ae and 20be in the lateral direction, the band members 20a and 20b are connected in an annular shape, thereby 2 is a pants-type diaper 1 in which a waist opening 1HB and a pair of leg openings 1HL, 1HL are formed as shown in FIG.

  The absorbent main body 10 absorbs the absorbent core 11, the liquid-permeable surface sheet 13 that covers the core 11 from the skin side and forms the skin side surface of the absorbent main body 10, and the core 11 from the non-skin side. A liquid-impermeable back sheet 15 that forms the non-skin side surface of the adhesive main body 10. The absorbent core 11 is formed by molding a liquid absorbent material such as pulp fiber or a super absorbent polymer as an example of a liquid absorbent fiber into a predetermined shape such as a substantially hourglass shape in plan view. In this example, the core 11 is covered with a liquid-permeable covering sheet 12, and the back sheet 15 has a two-layer structure having a nonwoven fabric 15nw and a resin film 15f. Not limited to this.

  Moreover, as shown in FIG.3 and FIG.5B, the absorptive main body 10 may have the solid gathers LSG and LSG as a leak-proof wall part in each edge part of a horizontal direction in order to prevent a side leak. Furthermore, elastic members 17r such as rubber thread are arranged on both sides of the absorbent main body 10 in the lateral direction, so that it corresponds to the leg openings 1HL and 1HL of the diaper 1 as shown in FIG. Stretchable leg gathers LG, LG may be formed on the portion to be stretched.

  On the other hand, as shown in FIGS. 3 and 4, the abdominal band member 20a and the dorsal band member 20b are respectively sheet-like members having a substantially rectangular shape in plan view that are long in the lateral direction, and as shown in FIGS. It has an outer layer sheet 21 and an inner layer sheet 22 laminated in the thickness direction. The inner layer sheet 22 is located on the skin side in the thickness direction with respect to the outer layer sheet 21. Moreover, both the sheets 21 and 22 are formed with flexible sheets, such as a nonwoven fabric, and the spun bond nonwoven fabric is used in this example. However, the present invention is not limited to this, and another type of non-woven fabric may be used, or a resin film or woven fabric may be used. In this example, a single fiber of polypropylene (PP) is used as a constituent fiber of the nonwoven fabric. However, the present invention is not limited to this, and a single fiber of other thermoplastic resin such as polyethylene (PE) may be used. Furthermore, a composite fiber such as a sheath core structure of PE and PP may be used.

  And the center area | region 20ac and 20bc of the horizontal direction in each strip | belt member 20a and 20b is piled up and joined to the non-skin side surface of each edge part 10ea and 10eb of the vertical direction of the absorptive main body 10. FIG.

  Incidentally, in this example, as shown in FIG. 3 and FIG. 6, the planar size of the outer layer sheet 21 is a size that protrudes outward in the vertical direction from the inner layer sheet 22, and the protruding portion of the outer layer sheet 21. 21p is folded inward in the longitudinal direction to cover the longitudinal end portion 22e of the inner layer sheet 22, but is not limited thereto.

  Further, the belt members 20a and 20b are provided with lateral stretchability so that the belt members 20a and 20b can firmly hold the wearer's torso when the diaper 1 is worn. However, from the viewpoint of suppressing the generation of wrinkles at the position of the absorbent core 11 of the absorbent main body 10 and preventing the deterioration of its liquid absorbency and leakproof properties, as shown in FIG. 4, the band members 20a and 20b In particular, in the regions 20ac and 20bc overlapping the absorbent core 11 of the absorbent main body 10, a non-stretchable region AL having almost no stretchability is formed.

  Hereinafter, this will be described. Here, the basic configuration of the abdominal band member 20a and the back band member 20b is the same. Therefore, in the following description, only the ventral band member 20a will be described, and the description of the dorsal band member 20b will be omitted. For convenience of explanation, as shown in the schematic plan view of FIG. 7, the ventral belt member 20a will be described below by dividing it into two regions AU and AD in the vertical direction. That is, the area AU located on the waistline opening 1HB side in the vertical direction is referred to as “upper area AU”, and the area AD located on the leg circumference opening 1HB side is referred to as “lower area AD”.

  As shown in FIG. 7, the absorbent core 11 of the absorbent main body 10 does not overlap with the upper region AU. Therefore, the region AU is given stretchability over the entire length in the lateral direction. In addition, the provision of stretchability is realized by a plurality of thread rubbers 25, 25... Arranged in the horizontal direction in a laterally stretched state and fixed in the same region AU in the vertical direction. The thread rubber 25 is fixed to the area AU by, for example, the thread rubber 25 or a hot melt adhesive applied to the area AU. Incidentally, examples of the fineness of the thread rubber 25 include 400 dtex to 1000 dtex, and specific examples of the thread rubber 25 include LYCRA (trademark). This also applies to the rubber thread 27 provided in the lower region AD described later.

  On the other hand, since the absorbent core 11 of the absorbent main body 10 overlaps the central region ADc in the lateral direction of the lower region AD, the central region ADc has a non-stretchable region AL that has almost no lateral stretchability. (Corresponding to a low expansion / contraction region) is formed, and since the absorbent core 11 does not substantially overlap the end side regions ADe, ADe located on both sides of the central region ADc, the end side region ADe , ADe are formed with stretchable areas AH, AH (corresponding to high stretchable areas) having higher stretchability than the non-stretchable area AL.

  Here, the non-stretchable region AL of the central region ADc and the stretchable regions AH, AH of the end regions ADe, ADe are formed as follows. First, as shown in FIG. 8, between the outer layer sheet 21 and the inner layer sheet 22, a plurality of thread rubbers 27s, 27s,... ing. Each thread rubber 27s is generally fixed with a hot melt adhesive in the region AH1 corresponding to the stretchable region AH in the end side region ADe, but in the region AL1 corresponding to the non-stretchable region AL in the central region ADc, Generally not fixed. Therefore, in the area AL1 corresponding to the non-stretchable area AL, the band member 20a is pressed from the thickness direction by a cutter device 50, which will be described later, and the thread rubbers 27s, 27s,. As described above, the cut rubber threads 27, 27,... Shrink toward the lateral ends, and generally do not remain in the area AL1 corresponding to the non-stretchable area AL in the central area ADc, but extend in the stretchable area AH in the endside area ADe. In this way, the non-stretchable region AL is formed in the central region ADc, and the stretchable region AH is formed in the end side region ADe.

  Incidentally, in this example, linear crimping portions j are formed at the respective positions PC1 pressed in the thickness direction in the ventral belt member 20a when cutting the respective rubber threads 27s, 27s. This will be described later.

  In the manufacturing apparatus 30 of the sheet-like member 20as of the present embodiment, a continuous body 20as in which a plurality of the above-described ventral band members 20a are connected in the lateral direction is generated as an example of the sheet-like member 20as. FIG. 9A is a schematic plan view for explaining the sheet-like member 20as immediately before being conveyed to the manufacturing apparatus 30. FIG. At this time, the sheet-like member 20as is in a state where a plurality of ventral belt members 20a, 20a,. That is, the sheet-like member 20as includes a plurality of thread rubber continuums 25s, 25s... And a plurality of thread rubber continuums 27s, 27s... Between a continuous sheet 21s of the outer layer sheet and a continuous sheet 22s of the inner layer sheet. Both continuous sheets 21s and 22s are joined while being inserted. The plurality of thread rubber continuums 25 s, 25 s... And the plurality of thread rubber continuums 27 s, 27 s... Extend in the continuous direction of the sheet-like member 20 as each along the same continuous direction. Are arranged side by side in the width direction. And the area | region of the one side of the width direction in the sheet-like member 20as is equivalent to the upper area | region AU of the ventral | abdominal band member 20a, and the area | region of the other side is equivalent to the lower area | region AD of the ventral | abdominal band member 20a. Therefore, in the former area AU, in order to form a stretchable region over the entire length in the continuous direction, a plurality of corresponding thread rubber continuous bodies 25 s, 25 s... It is fixed to each continuous sheet 21s, 22s related to the member 20as by a hot melt adhesive. On the other hand, in the latter area AD, since the stretchable area AH and the non-stretchable area AL are formed side by side in the continuous direction, a plurality of corresponding thread rubber continuous bodies 27s, 27s. The continuous sheets 21s and 22s according to 20as are intermittently fixed with a hot melt adhesive in the continuous direction. That is, in the continuous sheet 21s, 22s in FIG. 9A, in the region AH1 corresponding to the stretchable region AH, the thread rubber continuous bodies 27s, 27s... Are fixed by the hot melt adhesive, but correspond to the non-stretchable region AL. In the area AL1, it is not fixed. At this time, as shown in FIG. 9A, in each of the continuous sheets 21s and 22s, the area AH1 corresponding to the stretchable area AH and the area AL1 corresponding to the non-stretchable area AL are in a continuous direction at a ratio of 2 to 1. This is because the stretchable regions AH and AH exist on both sides in the lateral direction of the non-stretchable region AL in the single-cut ventral belt member 20a shown in FIG. However, here, it is not necessary to distinguish and explain the areas AH1 and AH1 corresponding to the two stretchable areas AH and AH adjacent to each other in FIG. 9A. Therefore, in the following, these two areas AH1 and AH1 are combined. This will be described as one area AH2. In this case, as shown in FIG. 9A, in the sheet-like member 20as, the regions AH2 corresponding to the stretchable regions AH and AH and the region AL1 corresponding to the non-stretchable region AL appear alternately in the continuous direction. ing. In addition, the region AL1 corresponding to the non-stretchable region AL appears on the sheet-like member 20as at the product pitch of the diaper 1 in the continuous direction. Therefore, in this manufacturing apparatus 30, the thread rubber continuums 27s, 27s,... Of the sheet-like member 20as are cut at the product pitch of the diaper 1 in the continuous direction, whereby, as shown in FIG. In 20 as, the stretchable areas AH, AH and the non-stretchable area AL are alternately formed in the continuous direction. And the continuous body of ventral side belt member 20a, 20a ... as shown to the same FIG. 9B is produced | generated by the above.

  In the following description, the continuous direction of the sheet-like member 20as is also referred to as “MD direction”, and the width direction of the sheet-like member 20as is also referred to as “CD direction”. Incidentally, the thickness direction of the sheet-like member 20as, the MD direction as the continuous direction, and the CD direction as the width direction are orthogonal to each other.

  10A is a schematic side view of the manufacturing apparatus 30, and FIG. 10B is a view taken along the line BB in FIG. 10A.

  As shown in FIG. 10A, the manufacturing apparatus 30 includes a conveying device 40 that conveys the sheet-like member 20as having the thread rubber continuums 27s, 27s... With the MD direction as the conveying direction, and the sheet-like member 20as. And a cutter device 50 for cutting the thread rubber continuum 27s, 27s (corresponding to an elastic member).

  The transport device 40 includes, for example, a plurality of transport rollers 40R, 40R. And at least one of the plurality of transport rollers 40R, 40R ... is a drive roller that rotates around a rotation axis along the CD direction, and the transport roller 40R other than the drive roller is, for example, a sheet-like member This is a driven roller that rotates with 20as. In addition, it may replace with this conveyance roller 40R, or in addition to the roller 40R, the conveyance apparatus 40 may have a belt conveyor.

  The cutter device 50 is the same when cutting a pair of upper and lower rolls 51u, 51d rotating around a rotation axis along the CD direction, and a continuous body of thread rubber 27s, 27s... With the outer peripheral surfaces 51ua, 51da facing each other. And a housing 55 for receiving a reaction force of cutting acting on the rolls 51u and 51d.

  The pair of upper and lower rolls 51u and 51d are supported by bearing members 52u and 52d provided in the housing 55, respectively, so that they can rotate around a rotation axis parallel to the CD direction. The bearing member 52d of the lower roll 51d is fixed to the housing 55 so as not to move. The bearing member 52u of the upper roll 51u is fixed by an appropriate actuator 53 such as a hydraulic cylinder or an air cylinder fixed to the housing 55. It can be moved up and down in the up and down direction, which is the contact and separation direction with respect to the lower roll 51d. By controlling the actuator 53, the size of the space between the outer peripheral surfaces 51ua, 51da of the pair of upper and lower rolls 51u, 51d and the size of the pressing force (N) in the contact / separation direction can be adjusted. ing.

  Further, each roll 51u, 51d is driven and rotated around the rotation axis by a servo motor (not shown) as a drive source. That is, the rotation is performed with the directions orthogonal to the rotation axis as the rotation directions Dc51u and Dc51d. Therefore, the sheet-like member 20as fed between the outer peripheral surfaces 51ua and 51da of the pair of upper and lower rolls 51u and 51d passes between the outer peripheral surfaces 51ua and 51da and is sent downstream in the MD direction.

  Here, in this example, the lower roll 51d is a cutter roll (corresponding to a cutter rotating body), and the upper roll 51u is an anvil roll (corresponding to an anvil rotating body). That is, at least one cutter block 54 is provided on the outer peripheral surface 51da of the lower roll 51d at every angle corresponding to the product pitch of the diaper 1 in the rotation direction Dc51d. Specifically, in this example, two cutter blocks 54, 54 are provided at an angle of 180 ° in the rotation direction Dc51d. Further, each cutter block 54 is formed with a plurality of cutter blades C, C..., And the outer peripheral surface 51 ua of the upper roll 51 u which is an anvil roll is smooth so as to receive the cutter blades C, C. It is considered as a surface. Further, these rolls 51u and 51d are controlled to rotate in conjunction with the conveying operation of the sheet-like member 20as, so that each time the area AL1 corresponding to the non-stretchable area AL passes, The cutter roll 51d rotates so that the cutter block 54 faces the surface.

  Therefore, each time the area AL1 corresponding to the non-stretchable area AL in FIG. 9A passes between the outer peripheral surfaces 51ua and 51da of the pair of rolls 51u and 51d, the area AL1 is the cutter block 54 of the cutter roll 51d. Are pressed by the cutter blades C, C. Then, the thread rubber continuums 27s, 27s... Are cut at the pressed positions PC1, respectively, so that the cut rubber thread 27 corresponds to the high expansion / contraction area AH as shown in FIG. 9B. As a result of contraction toward AH1, a non-expandable area AL and an expandable area AH are formed in the sheet-like member 20as.

  FIG. 11 is an explanatory view of the arrangement state of the cutter blades C, C... Provided on the cutter block 54 of the cutter roll 51d, and shows the outer peripheral surface 51da of the roll 51d developed on a plane. In FIG. 11, continuous thread rubbers 27s, 27s,... Are also virtually shown. In FIG. 11, for the purpose of making it easy to compare the positional relationship in the rotational direction Dc51d (or MD direction), ruled lines parallel to the CD direction are also shown by two-dot chain lines. For the purpose of facilitating the comparison of positional relationships, ruled lines parallel to the rotation direction Dc51d (or MD direction) are also shown with two-dot chain lines. This also applies to FIGS. 12 to 15 which will be described later.

  As shown in FIG. 11, the cutter block 54 is provided with a plurality of cutter blades C, C... The length LC of the blade edge is selected from a range of 4 mm to 15 mm, for example, and the width dimension WC of the blade edge is selected from a range of 0.1 mm to 0.5 mm, for example. However, the shape of the cutting edge is not limited to the linear shape as described above, and may be a zigzag broken line shape or a curved shape such as an arc line shape.

  Further, in order to solve the above-described problem of the present invention, that is, the problem of “suppressing vibration of the cutter roll 51d when cutting the thread rubber continuous body 27s”, these cutter blades C, C. It is arranged based on that law, and will be described below.

  First, as described above with reference to FIG. 9A, the thread rubber continuums 27 s, 27 s... To be cut are placed in the MD direction in the lower region AD of the sheet-like member 20 as along the MD direction. 11 are arranged side by side in the same CD direction with an appropriate interval between the adjacent thread rubber continuum 27s. Further, in the cutter roll 51d, the rotation operation is performed in conjunction with the conveying operation of the sheet-like member 20as, thereby cutting the 11 thread rubber continuums 27s, 27s... As shown in FIG. 9B. , And is performed for each area AL1 corresponding to the non-stretchable area AL in the lower area AD. At that time, as shown in FIG. Is going on.

  Therefore, as shown in FIG. 11, each cutter block 54 on the outer peripheral surface 51da of the cutter roll 51d is provided with one cutter blade C for each of the thread rubber continuous bodies 27s, 27s. Yes. For example, in this example, since 11 thread rubber continuums 27s, 27s,... Are arranged in the lower region AD as described above, each cutter block 54 has 11 cutter blades C, C ... is provided. Thus, each cutter blade C cuts one corresponding thread rubber continuous body 27 s at one PC in the MD direction.

  Moreover, in each position PC1 which each cutter blade C pressed with this cutting | disconnection, the continuous sheet 21s of the outer layer sheet | seat which concerns on the sheet-like member 20as, and the continuous sheet 22s of the inner layer sheet | seat are crimped | bonded, thereby FIG. As shown, a plurality of 11 linear crimping portions j, j... Are formed by shifting the positions PC1 in the CD direction. And since it is the crimping | compression-bonding part j, a through-hole is not substantially formed in the same position PC1, As a result, the damage which may arise in the sheet-like member 20as resulting from the cutting | disconnection of the thread rubber continuous body 27s is suppressed. be able to. Incidentally, the concept of the above-mentioned linear crimping part j includes a linear fusion part formed by fusing two continuous sheets 21 and 22 to each other.

  These 11 cutter blades C are provided while shifting the position of the rotation direction Dc51d with respect to each other. However, for the convenience of explanation, in FIG. 11, for each of the 11 cutter blades C, C. Thus, new codes C1 to C11 are given in the order from the upstream side to the downstream side in the rotation direction Dc51d.

  On the other hand, when the following rule is described using the two cutter blades C1 and C2 in FIG. 11 as an example, the two cutter blades C1 and C2 are arranged as follows. That is, these two cutter blades C1 and C2 are arranged adjacent to each other in the rotational direction Dc51d. Here, the blade edge of the cutter blade C1 located downstream in the rotational direction Dc51d is at least the same blade edge. At the position upstream of the rotational direction Dc51d from the position PC where the continuous thread rubber 27s is cut, the blade tip of the upstream cutter blade C2 overlaps the rotational direction Dc51d.

  And if it becomes such arrangement | positioning relationship, after the former cutter blade C1 cut | disconnects the thread rubber continuous body 27s, when the cutter blade C1 is still pressed toward the anvil roll 51u, The latter cutter blade C2 that cuts the other thread rubber continuous body 27s next is already pressed toward the anvil roll 51u.

  Therefore, the cutting reaction force that can act on the cutter roll 51d along with the cutting can be received not only by the former cutter blade C1 but also by the latter cutter blade C2 after the cutting. The vibration of the cutter roll 51d that can occur with the fluctuation of the reaction force of the cutting after the cutting of the continuous body 27s can be suppressed in the two-point support state. As a result, the vibration of the cutter roll 51d can be effectively suppressed.

  Further, in this example, as shown in FIG. 11, at least one of two cutter blades C5 and C9 is located between the former cutter blade C1 and the latter cutter blade C2 in the CD direction. Thus, the cutter blades C1 and C2 that are in the two-point support state are greatly separated in the CD direction. That is, the support span in the two-point support state is increased. This can effectively contribute to stabilization of the two-point support state, and as a result, the vibration of the cutter roll 51d can be more reliably suppressed.

  Furthermore, if at least one cutter blade C5, C9 is located at a position between the CD directions of two cutter blades C1, C2 that cut continuously in time series as described above, the CD direction Can be cut continuously from thread rubber continuums 27s, 27s,. Therefore, it is possible to effectively prevent a large number of thread rubber continuous bodies 27s, 27s... As a result, it is possible to effectively prevent the conveyance state of the sheet-like member 20as from becoming unstable, such as the sheet-like member 20as meandering in the CD direction while sequentially cutting the continuous bodies 27s of the respective rubber threads. .

  Further, as can be seen with reference to FIG. 11, in this example, any cutter other than the cutter blade C11 that finally cuts the thread rubber continuous body 27s among the cutter blades C, C... Belonging to the same cutter block 54. As for the blades C, C..., There is a cutter blade C corresponding to the other cutter blade C2 to be in the two-point support state, and the cutter blade C in the two-point support state in the CD direction. , C, at least one other cutter blade C is located.

  For example, in this example, the cutter blade C11 positioned at the uppermost stream in the rotation direction Dc51d corresponds to the cutter blade C11 that cuts the continuous thread rubber 27s at the end described above. When attention is paid to the two cutter blades C2 and C3 in FIG. 11, among these two cutter blades C2 and C3, at least the blade edge of the cutter blade C2 located on the downstream side in the rotation direction Dc51d is thread rubber. At the position upstream of the rotational direction Dc51d from the position PC for cutting the continuous body 27s, the blade tip of the upstream cutter blade C3 overlaps the rotational direction Dc51d. Therefore, after the former cutter blade C2 cuts the thread rubber continuum 27s and the cutter blade C2 is still being pressed toward the anvil roll 51u, the other thread rubber continuum 27s is moved to the next. The latter cutter blade C3 to be cut has already been pressed toward the anvil roll 51u, whereby the two cutter blades C2 and C3 can also be in a two-point support state. Moreover, two cutter blades C6 and C10 are located as an example between the former cutter blade C2 and the latter cutter blade C3 in the CD direction. The cutter blades C2 and C3 are greatly separated in the CD direction.

  The same is true for the cutter blades C3 and C4. Similarly, the cutter blades C4 and C5, the cutter blades C5 and C6, the cutter blades C6 and C7, the cutter blade C7, The case where attention is paid to C8, cutter blades C8 and C9, cutter blades C9 and C10, and cutter blades C10 and C11 is also established.

  Therefore, in this example, any cutter blade C, C... Is in a two-point support state with a large support span as described above, except for the cutter blade C11 that finally cuts the thread rubber continuous body 27s. As a result, the vibration of the cutter roll 51d can be more effectively suppressed.

  However, it is not limited to this. That is, for at least two cutter blades C, C belonging to the same cutter block 54, if the two-point support state having a large support span as described above is established, the effect of suppressing the vibration of the cutter roll 51d is obtained. You can enjoy it accordingly.

  Here, in FIG. 11, focusing on the two cutter blades C5 and C6 adjacent to the rotation direction Dc51d, when the cutter blade C5 located on the downstream side of the rotation direction Dc51d cuts the thread rubber continuous body 27s. The cutter blade C6 already positioned on the upstream side is also pressed toward the anvil roll 51u. That is, the upstream cutter blade C6 exists across the position PC where the downstream cutter blade C5 cuts the thread rubber continuous body 27s in the rotational direction Dc51d. More specifically, the vertical ruled line of a two-dot chain line in which the pointing position of the arrow PC indicating the cutting position of the cutter blade C5 in FIG. 11 overlaps the downstream end (right end in the drawing) of the rotation direction Cd51d in the cutter blade C6. It is located slightly upstream (left side in the figure) in the rotational direction Dc51d from (the ruled line along the CD direction).

  Therefore, the cutting reaction force that can act on the cutter roll 51d from when the cutter blade C5 is cut can be reliably received not only by the downstream cutter blade C5 but also by the upstream cutter blade C6. The vibration of the cutter roll 51d that can be caused by fluctuations in the cutting reaction force can be quickly suppressed in the two-point support state of the downstream cutter blade C5 and the upstream cutter blade C6.

  Incidentally, there are other pairs of cutter blades C and C that satisfy this requirement. For example, the above-mentioned two-point support state at the moment of cutting is also realized for a pair of cutter blades C3 and C4, a pair of cutter blades C7 and C8, a pair of cutter blades C9 and C10, and the like. Therefore, in the cutter device 50, the vibration of the cutter roll 51d can be more effectively suppressed.

  Further, in the example of FIG. 11, in order to form the overlapping relationship in the rotation direction Dc51d as described above without any problem, the direction of the cutter blades C and C is set to an inclination angle α having an appropriate size other than 90 ° from the CD direction. And all the cutter blades C, C... Are aligned not only in the magnitude of the inclination angle α but also in the direction of inclination. Specifically, in this example, the inclination angle α is set to 30 °, and with respect to the direction of inclination, the cutting edges of all the cutter blades C, C... Move toward the downstream side of the rotation direction Dc51d. They are set to be displaced to the same side in the CD direction.

  And if it is set in this way, the change in the separation distance in the CD direction between the cutter blades C, C that are in a two-point support state can be reduced over the rotation direction Dc51d. The two-point support state can be stabilized.

  However, the present invention is not limited to this as long as the cutter blades C and C can be overlapped with each other in the rotation direction Dc51d. That is, the magnitude of the inclination angle α is not limited to the above 30 °, and the magnitude of the inclination angle α may not be uniform over all the cutter blades C, C. It is not necessary to align the inclination direction over all the cutter blades C, C.

  In the example of FIG. 11, the number of cutter blades C simultaneously pressed toward the anvil roll 51u over all the cutter blades C1 to C11 belonging to the cutter block 54 of the cutter roll 51d is 2 or less. Yes. The numerical value 2 is the minimum value of the number of cutter blades C that are pressed simultaneously. Therefore, it is possible to effectively prevent the pressing force applied to the cutter blade C from being dispersed and reduced in a large number of cutter blades C, and as a result, each thread rubber continuous body 27s can be reliably cut. It becomes.

  FIG. 12 is a schematic plan view of a first modification of the arrangement pattern of the cutter blades C, C. For example, as shown in FIG. 4, the arrangement pattern of the first modified example is a cutting of all seven continuous thread rubbers 27 s, 27 s... To be served. Since it is apparent from FIG. 12 that this arrangement pattern also satisfies all the above-mentioned rules, detailed description thereof will be omitted.

  FIG. 13 is a schematic plan view of a second modification of the arrangement pattern of the cutter blades C, C.

  In the above-described embodiment, as shown in FIG. 11, even when the cutter blades C1 and C11 that cut the thread rubber continuous body 27s at the beginning and the end in the cutter block 54 are excluded, that is, Even when only the cutter blades C2 to C10 were considered, the number of cutter blades C simultaneously pressed toward the anvil roll 51u was not aligned with a predetermined number.

  For example, at the first focus position P1 and the second focus position P2 in the rotation direction Dc51d of FIG. 11, there are two cutter blades C and C, respectively, so that they are simultaneously pressed toward the anvil roll 51u. Although the number of cutter blades C is “2”, there is only one cutter blade C at the third focus position P3 and the fourth focus position P4 in FIG. The number of cutter blades C is not “2”. And by this, in the arrangement pattern of FIG. 11, the number of cutter blades C simultaneously pressed toward the anvil roll 51u is also predetermined for the cutter blades C2 to C10 when the cutter blades C1 and C11 are excluded. It is not in number.

  On the other hand, in the second modified example of FIG. 13, the cutter block 54 spans all the cutter blades C2 to C8 other than the cutter blades C1 and C9 that cut the continuous thread rubber 27s first and last. The number of cutter blades C simultaneously pressed is aligned to a predetermined number.

  For example, in the example of FIG. 13, the cutter blades C1 and C9 positioned at the most downstream and the most upstream in the rotation direction Dc51d are respectively cut into the cutter blades C and C that cut the continuous thread rubber 27s at the beginning and the end respectively. Equivalent to. Therefore, when attention is paid to the cutter blades C2 to C8 other than these two cutter blades C1 and C9, the number of the cutter blades C simultaneously pressed for the seven cutter blades C2 to C8 is equal to the predetermined number. ing. More specifically, “2” is provided as an example of the predetermined number.

  Therefore, while effectively preventing the dispersion of the pressing force applied to each cutter blade C at the time of cutting and ensuring a large pressing force, the magnitude of the pressing force is aligned over these seven cutter blades C2 to C8. As a result, the thread rubber continuous body 27s can be more effectively prevented from being cut.

  Further, in some cases, as shown in the schematic plan view of FIG. 14, a dummy rubber is disposed at a position where the thread rubber continuous body 27s is not cut while corresponding to the cutter blades C1 and C9 of the second modification of FIG. The cutter blades CD1 and CD9 may be additionally provided.

  That is, since each of the cutter blades C1 and C9 is positioned at the most downstream and the most upstream in the rotation direction Dc51d, each cutter blade C has portions C1N and C9N that do not overlap with the rotation direction Dc51d. However, dummy cutter blades CD1 and CD9 may be provided so as to overlap in the rotation direction Dc51d with respect to the non-overlapping portions C1N and C9N.

  And if it is doing in this way, the number of the cutter blades C pressed simultaneously toward the anvil roll 51u over all the cutter blades C of all nine cutter blades C1 to C9 that the cutter block 54 has, As an example of the predetermined number, “2” can be set.

  However, the number of cutter blades C that are pressed simultaneously may be equal to a plurality of numbers other than “2” such as “3” and “4”.

  Also, in any of the examples shown in FIGS. 11 to 14, none of the cutter blades C, C... Overlap in the CD direction, but if this is the case, they are arranged side by side in the CD direction. Can be reliably cut at a single PC in the MD direction.

=== Other Embodiments ===
As mentioned above, although embodiment of this invention was described, said embodiment is for making an understanding of this invention easy, and is not for limiting and interpreting this invention. Further, the present invention can be changed or improved without departing from the gist thereof, and needless to say, the present invention includes equivalents thereof. For example, the following modifications are possible.

  In the above-described embodiment, as shown in FIG. 11, the rubber thread continuum 27 s is exemplified as the elastic member, and the cutter blades C, C... Are respectively formed on the plurality of thread rubber continuums 27 s, 27 s. However, the present invention is not limited to this. For example, as shown in FIG. 15, as an example of two or more, one cutter blade C may be associated with two or three thread rubber continuous bodies 27 s. That is, one cutter blade C may be provided so as to straddle two thread rubber continuums 27s, 27s or three thread rubber continuums 27s, 27s, 27s. And even if it does in this way, each continuous body 27s of thread rubber will be cut | disconnected by one place PC of MD direction, respectively. However, in this case, as compared with the case where one cutter blade C, C... Is provided for each of the plurality of thread rubber continuous bodies 27 s, 27 s. There is a possibility that the length of the linear crimping part j formed on the sheet-like member 20as due to the press may be increased. May become noticeable. Therefore, from the viewpoint of avoiding these problems, it is preferable that one cutter blade C, C... Is associated with each of the plurality of thread rubber continuous bodies 27 s, 27 s.

  In the above-described embodiment, as shown in FIG. 9B, the linear crimping portion j is formed at the position PC1 pressed by the cutter blade C. However, the present invention is not limited to this. That is, by cutting the continuous sheets 21s and 22s of the sheet-like member 20as at the same position PC1, a through hole penetrating in the thickness direction may be formed at the same position PC1.

  In the above-described embodiment, the continuous sheet 21s of the outer layer sheet and the continuous sheet 22s of the inner layer sheet are illustrated as the continuous sheet related to the sheet-like member 20as, but it is not necessary to have any two-sheet configuration. For example, a single-sheet configuration or three or more configurations may be used.

  In the embodiment described above, the thread rubber continuous body 27s is exemplified as the elastic member, but the elastic member is not limited thereto. For example, a belt-like elastic member such as a flat rubber continuous body may be used.

  In the above-described embodiment, the cutter roll 51d is illustrated as the cutter rotating body, and the anvil roll 51u is illustrated as the anvil rotating body. However, the present invention is not limited thereto. For example, an endless belt may be used as each of the cutter rotating body and the anvil rotating body.

  In above-mentioned embodiment, although the 3 piece type disposable diaper 1 was illustrated as an example of an absorbent article, it is not restricted to this at all. For example, a thread rubber continuous body 27s provided on a sheet-like member used in a two-piece type disposable diaper may be cut by the cutter device 50 described above. Incidentally, a two-piece type disposable diaper has a two-layered exterior sheet having an abdominal part, a crotch part, and a dorsal part as a first component, and is fixed to the skin side of the exterior sheet. This is a type of diaper having a sexable main body 10 as a second part. In that case, the continuous sheet of the exterior sheet corresponds to the above-described sheet-like member, and each of the thread rubber continuums 27s, 27s... Will be inserted.

  In above-mentioned embodiment, although the underpants type disposable diaper 1 was illustrated as an example of an absorbent article, it is not restricted to this at all. That is, it may be a tape-type disposable diaper. The tape-type disposable diaper has an abdominal side that covers the wearer's torso from the abdomen side and a back side that covers the torso from the back side. It is a type of diaper that uses a fastening tape to connect. Furthermore, the absorbent article is not limited to the disposable diaper 1 described above. That is, the manufacturing method and manufacturing apparatus of the present invention can be applied to any absorbent article that uses the above-described sheet-like member 20as as a material. Therefore, the concept of this absorbent article includes a urine absorbing pad and a sanitary napkin.

1 disposable diaper (absorbent article) 1HB waist opening, 1HL leg opening,
10 Absorbent body, 10ea end, 10eb end,
11 Absorbent core, 12 Cover sheet,
13 surface sheet, 15 back sheet, 15f resin film, 15nw nonwoven fabric,
17r elastic member,
20a ventral band member, 20ac central region,
20ae end, 20be end,
20as sheet-like member,
20b dorsal belt member,
21 outer layer sheet, 21p part, 21s continuous sheet,
22 inner layer sheet, 22e end, 22s continuous sheet,
25 Rubber thread,
27 Rubber thread,
25 thread rubber, 25s continuum of thread rubber,
27 thread rubber, 27s thread rubber continuous body (elastic member, thread rubber),
27sd elastic member,
30 manufacturing equipment,
40 transport device, 40R transport roller,
50 cutter device,
51d cutter roll (cutter rotating body), 51da outer peripheral surface,
51u anvil roll (anvil rotating body), 51ua outer peripheral surface,
52d bearing member, 52u bearing member,
53 Actuator, 54 Cutter block, 55 Housing,
C cutter blade, C1 cutter blade, C1N non-overlapping part,
C2 cutter blade, C3 cutter blade. C4 cutter blade, C5 cutter blade,
C6 cutter blade, C7 cutter blade, C8 cutter blade, C9 cutter blade,
C10 cutter blade, C11 cutter blade,
CD1, dummy cutter blade, CD9, dummy cutter blade,
j linear crimping part,
AU upper area,
AD lower region, ADc center region, ADe end side region,
AH stretch region (high stretch region), AH1 region, AH2 region,
AL non-stretchable area (low stretchable area), AL1 area,
PC position, PC1 position,
LSG solid gather,
LG Leg gathers,
CL10 substantially central part,

Claims (14)

A method for producing a sheet-like member having a high stretch region and a low stretch region having lower stretchability in a predetermined direction than the high stretch region, arranged in the predetermined direction,
In a state where a plurality of elastic members extending in the predetermined direction in an extended state in the predetermined direction are arranged in a CD direction intersecting the predetermined direction, a continuous sheet fixed at least in a region corresponding to the high stretchable region, Transporting the predetermined direction as a transport direction;
By cutting each of the plurality of elastic members at one location in the transport direction in a region corresponding to the low expansion / contraction region, and contracting the plurality of elastic members toward a region corresponding to the high expansion / contraction region, Forming the high stretch region and the low stretch region in the continuous direction on the continuous sheet,
When the continuous sheet, to which the plurality of elastic members are fixed, passes between the cutter rotating body and the anvil rotating body that rotate while facing each other's outer peripheral surface, along the transport direction, the continuous sheet is The plurality of elastic members are cut by being pressed by a plurality of cutter blades provided protruding from the outer peripheral surface of the cutter rotating body,
The plurality of cutter blades are disposed on the outer peripheral surface of the cutter rotating body at positions shifted from each other in the CD direction, and a certain elastic member is formed by one cutter blade of the plurality of cutter blades. After the cutting, when the one cutter blade is still pressing the continuous sheet, among the plurality of cutter blades, the other cutter blade that cuts the other elastic member next is already the continuous blade. It is in a state of pressing the sheet,
At least one cutter blade is located at a position between the one cutter blade and the other cutter blade in the CD direction,
Absorbent article characterized in that a cutter blade corresponding to the other cutter blade exists for any cutter blade other than the cutter blade that finally cuts the elastic member among the plurality of cutter blades. The manufacturing method of the sheet-like member which concerns on this. A method for producing a sheet-like member having a high stretch region and a low stretch region having lower stretchability in a predetermined direction than the high stretch region, arranged in the predetermined direction,
In a state where a plurality of elastic members extending in the predetermined direction in an extended state in the predetermined direction are arranged in a CD direction intersecting the predetermined direction, a continuous sheet fixed at least in a region corresponding to the high stretchable region, Transporting the predetermined direction as a transport direction;
By cutting each of the plurality of elastic members at one location in the transport direction in a region corresponding to the low expansion / contraction region, and contracting the plurality of elastic members toward a region corresponding to the high expansion / contraction region, Forming the high stretch region and the low stretch region in the continuous direction on the continuous sheet,
When the continuous sheet, to which the plurality of elastic members are fixed, passes between the cutter rotating body and the anvil rotating body that rotate while facing each other's outer peripheral surface, along the transport direction, the continuous sheet is The plurality of elastic members are cut by being pressed by a plurality of cutter blades provided protruding from the outer peripheral surface of the cutter rotating body,
The plurality of cutter blades are disposed on the outer peripheral surface of the cutter rotating body at positions shifted from each other in the CD direction, and a certain elastic member is formed by one cutter blade of the plurality of cutter blades. After the cutting, when the one cutter blade is still pressing the continuous sheet, among the plurality of cutter blades, the other cutter blade that cuts the other elastic member next is already the continuous blade. It is in a state of pressing the sheet,
At least one cutter blade is located at a position between the one cutter blade and the other cutter blade in the CD direction,
A method for producing a sheet-like member according to an absorbent article, wherein each of the plurality of elastic members is provided with one cutter blade associated therewith. It is a manufacturing method of the sheet-like member concerning the absorptive article according to claim 1 or 2 ,
When the one cutter blade cuts the certain elastic member, the other cutter blade is already in a state of pressing the continuous sheet . Production method. A method for producing a sheet-like member having a high stretch region and a low stretch region having lower stretchability in a predetermined direction than the high stretch region, arranged in the predetermined direction,
In a state where a plurality of elastic members extending in the predetermined direction in an extended state in the predetermined direction are arranged in a CD direction intersecting the predetermined direction, a continuous sheet fixed at least in a region corresponding to the high stretchable region, Transporting the predetermined direction as a transport direction;
By cutting each of the plurality of elastic members at one location in the transport direction in a region corresponding to the low expansion / contraction region, and contracting the plurality of elastic members toward a region corresponding to the high expansion / contraction region, Forming the high stretch region and the low stretch region in the continuous direction on the continuous sheet,
When the continuous sheet, to which the plurality of elastic members are fixed, passes between the cutter rotating body and the anvil rotating body that rotate while facing each other's outer peripheral surface, along the transport direction, the continuous sheet is The plurality of elastic members are cut by being pressed by a plurality of cutter blades provided protruding from the outer peripheral surface of the cutter rotating body,
The plurality of cutter blades are disposed on the outer peripheral surface of the cutter rotating body at positions shifted from each other in the CD direction, and a certain elastic member is formed by one cutter blade of the plurality of cutter blades. After the cutting, when the one cutter blade is still pressing the continuous sheet, among the plurality of cutter blades, the other cutter blade that cuts the other elastic member next is already the continuous blade. It is in a state of pressing the sheet,
At least one cutter blade is located at a position between the one cutter blade and the other cutter blade in the CD direction,
The number of the cutter blades that simultaneously press the continuous sheet across all the cutter blades of the plurality of cutter blades includes 1 and 2, and is 2 or less. A manufacturing method of a sheet-like member. A method for producing a sheet-like member having a high stretch region and a low stretch region having lower stretchability in a predetermined direction than the high stretch region, arranged in the predetermined direction,
In a state where a plurality of elastic members extending in the predetermined direction in an extended state in the predetermined direction are arranged in a CD direction intersecting the predetermined direction, a continuous sheet fixed at least in a region corresponding to the high stretchable region, Transporting the predetermined direction as a transport direction;
By cutting each of the plurality of elastic members at one location in the transport direction in a region corresponding to the low expansion / contraction region, and contracting the plurality of elastic members toward a region corresponding to the high expansion / contraction region, Forming the high stretch region and the low stretch region in the continuous direction on the continuous sheet,
When the continuous sheet, to which the plurality of elastic members are fixed, passes between the cutter rotating body and the anvil rotating body that rotate while facing each other's outer peripheral surface, along the transport direction, the continuous sheet is The plurality of elastic members are cut by being pressed by a plurality of cutter blades provided protruding from the outer peripheral surface of the cutter rotating body,
The plurality of cutter blades are disposed on the outer peripheral surface of the cutter rotating body at positions shifted from each other in the CD direction, and a certain elastic member is formed by one cutter blade of the plurality of cutter blades. After the cutting, when the one cutter blade is still pressing the continuous sheet, among the plurality of cutter blades, the other cutter blade that cuts the other elastic member next is already the continuous blade. It is in a state of pressing the sheet,
At least one cutter blade is located at a position between the one cutter blade and the other cutter blade in the CD direction,
Among the plurality of cutter blades, the number of the cutter blades that simultaneously press the continuous sheet is aligned to a predetermined number across all cutter blades other than the cutter blades that cut the elastic member first and last. The manufacturing method of the sheet-like member which concerns on the absorbent article characterized by the above-mentioned. It is a manufacturing method of the sheet-like member concerning the absorptive article according to claim 5 ,
The said predetermined number is 2, The manufacturing method of the sheet-like member which concerns on the absorbent article characterized by the above-mentioned. A method for producing a sheet-like member having a high stretch region and a low stretch region having lower stretchability in a predetermined direction than the high stretch region, arranged in the predetermined direction,
In a state where a plurality of elastic members extending in the predetermined direction in an extended state in the predetermined direction are arranged in a CD direction intersecting the predetermined direction, a continuous sheet fixed at least in a region corresponding to the high stretchable region, Transporting the predetermined direction as a transport direction;
By cutting each of the plurality of elastic members at one location in the transport direction in a region corresponding to the low expansion / contraction region, and contracting the plurality of elastic members toward a region corresponding to the high expansion / contraction region, Forming the high stretch region and the low stretch region in the continuous direction on the continuous sheet,
When the continuous sheet, to which the plurality of elastic members are fixed, passes between the cutter rotating body and the anvil rotating body that rotate while facing each other's outer peripheral surface, along the transport direction, the continuous sheet is The plurality of elastic members are cut by being pressed by a plurality of cutter blades provided protruding from the outer peripheral surface of the cutter rotating body,
The plurality of cutter blades are disposed on the outer peripheral surface of the cutter rotating body at positions shifted from each other in the CD direction, and a certain elastic member is formed by one cutter blade of the plurality of cutter blades. After the cutting, when the one cutter blade is still pressing the continuous sheet, among the plurality of cutter blades, the other cutter blade that cuts the other elastic member next is already the continuous blade. It is in a state of pressing the sheet,
At least one cutter blade is located at a position between the one cutter blade and the other cutter blade in the CD direction,
Each cutter blade that cuts the elastic member first and last among the plurality of cutter blades has a portion that does not overlap with any of the plurality of cutter blades in the rotation direction. ,
The cutter rotating body has a dummy cutter blade at a position where none of the plurality of elastic members is cut,
The method of manufacturing a sheet-like member according to an absorbent article, wherein the dummy cutter blade is provided to overlap the non-overlapping portion in the rotation direction. A method for producing a sheet-like member having a high stretch region and a low stretch region having lower stretchability in a predetermined direction than the high stretch region, arranged in the predetermined direction,
In a state where a plurality of elastic members extending in the predetermined direction in an extended state in the predetermined direction are arranged in a CD direction intersecting the predetermined direction, a continuous sheet fixed at least in a region corresponding to the high stretchable region, Transporting the predetermined direction as a transport direction;
By cutting each of the plurality of elastic members at one location in the transport direction in a region corresponding to the low expansion / contraction region, and contracting the plurality of elastic members toward a region corresponding to the high expansion / contraction region, Forming the high stretch region and the low stretch region in the continuous direction on the continuous sheet,
When the continuous sheet, to which the plurality of elastic members are fixed, passes between the cutter rotating body and the anvil rotating body that rotate while facing each other's outer peripheral surface, along the transport direction, the continuous sheet is The plurality of elastic members are cut by being pressed by a plurality of cutter blades provided protruding from the outer peripheral surface of the cutter rotating body,
The plurality of cutter blades are disposed on the outer peripheral surface of the cutter rotating body at positions shifted from each other in the CD direction, and a certain elastic member is formed by one cutter blade of the plurality of cutter blades. After the cutting, when the one cutter blade is still pressing the continuous sheet, among the plurality of cutter blades, the other cutter blade that cuts the other elastic member next is already the continuous blade. It is in a state of pressing the sheet,
At least one cutter blade is located at a position between the one cutter blade and the other cutter blade in the CD direction,
Any cutter blade of the plurality of cutter blades does not overlap in the CD direction at the position of each blade edge, and the method for producing a sheet-like member according to the absorbent article. An apparatus for manufacturing a sheet-like member having a high stretch region and a low stretch region having lower stretchability in a predetermined direction than the high stretch region, arranged in the predetermined direction,
In a state where a plurality of elastic members extending in the predetermined direction in an extended state in the predetermined direction are arranged in a CD direction intersecting the predetermined direction, a continuous sheet fixed at least in a region corresponding to the high stretchable region, A transport device that transports the predetermined direction as the transport direction;
By cutting each of the plurality of elastic members at one location in the transport direction in a region corresponding to the low expansion / contraction region, and contracting the plurality of elastic members toward a region corresponding to the high expansion / contraction region, A cutter device that forms the high stretch region and the low stretch region in the continuous direction on the continuous sheet, and
The cutter device includes a cutter rotating body and an anvil rotating body that rotate to face each other's outer peripheral surfaces, and the plurality of elastic members are fixed between the rotating cutter rotating body and the anvil rotating body. By pressing the continuous sheet with a plurality of cutter blades provided so as to protrude from the outer peripheral surface of the cutter rotating body when the continuous sheet is passed along the transport direction, the plurality of elasticity Cutting the parts,
The plurality of cutter blades are disposed on the outer peripheral surface of the cutter rotating body at positions shifted from each other in the CD direction, and a certain elastic member is formed by one cutter blade of the plurality of cutter blades. After the cutting, when the one cutter blade is still pressing the continuous sheet, among the plurality of cutter blades, the other cutter blade that cuts the other elastic member next is already the continuous blade. It is in a state of pressing the sheet,
At least one cutter blade is located at a position between the one cutter blade and the other cutter blade in the CD direction,
Absorbent article characterized in that a cutter blade corresponding to the other cutter blade exists for any cutter blade other than the cutter blade that finally cuts the elastic member among the plurality of cutter blades. The manufacturing apparatus of the sheet-like member which concerns on this. An apparatus for manufacturing a sheet-like member having a high stretch region and a low stretch region having lower stretchability in a predetermined direction than the high stretch region, arranged in the predetermined direction,
In a state where a plurality of elastic members extending in the predetermined direction in an extended state in the predetermined direction are arranged in a CD direction intersecting the predetermined direction, a continuous sheet fixed at least in a region corresponding to the high stretchable region, A transport device that transports the predetermined direction as the transport direction;
By cutting each of the plurality of elastic members at one location in the transport direction in a region corresponding to the low expansion / contraction region, and contracting the plurality of elastic members toward a region corresponding to the high expansion / contraction region, A cutter device that forms the high stretch region and the low stretch region in the continuous direction on the continuous sheet, and
The cutter device includes a cutter rotating body and an anvil rotating body that rotate to face each other's outer peripheral surfaces, and the plurality of elastic members are fixed between the rotating cutter rotating body and the anvil rotating body. By pressing the continuous sheet with a plurality of cutter blades provided so as to protrude from the outer peripheral surface of the cutter rotating body when the continuous sheet is passed along the transport direction, the plurality of elasticity Cutting the parts,
The plurality of cutter blades are disposed on the outer peripheral surface of the cutter rotating body at positions shifted from each other in the CD direction, and a certain elastic member is formed by one cutter blade of the plurality of cutter blades. After the cutting, when the one cutter blade is still pressing the continuous sheet, among the plurality of cutter blades, the other cutter blade that cuts the other elastic member next is already the continuous blade. It is in a state of pressing the sheet,
At least one cutter blade is located at a position between the one cutter blade and the other cutter blade in the CD direction,
An apparatus for manufacturing a sheet-like member according to an absorbent article, wherein one cutter blade is associated with each of the plurality of elastic members. An apparatus for manufacturing a sheet-like member having a high stretch region and a low stretch region having lower stretchability in a predetermined direction than the high stretch region, arranged in the predetermined direction,
In a state where a plurality of elastic members extending in the predetermined direction in an extended state in the predetermined direction are arranged in a CD direction intersecting the predetermined direction, a continuous sheet fixed at least in a region corresponding to the high stretchable region, A transport device that transports the predetermined direction as the transport direction;
By cutting each of the plurality of elastic members at one location in the transport direction in a region corresponding to the low expansion / contraction region, and contracting the plurality of elastic members toward a region corresponding to the high expansion / contraction region, A cutter device that forms the high stretch region and the low stretch region in the continuous direction on the continuous sheet, and
The cutter device includes a cutter rotating body and an anvil rotating body that rotate to face each other's outer peripheral surfaces, and the plurality of elastic members are fixed between the rotating cutter rotating body and the anvil rotating body. By pressing the continuous sheet with a plurality of cutter blades provided so as to protrude from the outer peripheral surface of the cutter rotating body when the continuous sheet is passed along the transport direction, the plurality of elasticity Cutting the parts,
The plurality of cutter blades are disposed on the outer peripheral surface of the cutter rotating body at positions shifted from each other in the CD direction, and a certain elastic member is formed by one cutter blade of the plurality of cutter blades. After the cutting, when the one cutter blade is still pressing the continuous sheet, among the plurality of cutter blades, the other cutter blade that cuts the other elastic member next is already the continuous blade. It is in a state of pressing the sheet,
At least one cutter blade is located at a position between the one cutter blade and the other cutter blade in the CD direction,
The number of the cutter blades that simultaneously press the continuous sheet across all the cutter blades of the plurality of cutter blades includes 1 and 2, and is 2 or less. Sheet-like member manufacturing apparatus. An apparatus for manufacturing a sheet-like member having a high stretch region and a low stretch region having lower stretchability in a predetermined direction than the high stretch region, arranged in the predetermined direction,
In a state where a plurality of elastic members extending in the predetermined direction in an extended state in the predetermined direction are arranged in a CD direction intersecting the predetermined direction, a continuous sheet fixed at least in a region corresponding to the high stretchable region, A transport device that transports the predetermined direction as the transport direction;
By cutting each of the plurality of elastic members at one location in the transport direction in a region corresponding to the low expansion / contraction region, and contracting the plurality of elastic members toward a region corresponding to the high expansion / contraction region, A cutter device that forms the high stretch region and the low stretch region in the continuous direction on the continuous sheet, and
The cutter device includes a cutter rotating body and an anvil rotating body that rotate to face each other's outer peripheral surfaces, and the plurality of elastic members are fixed between the rotating cutter rotating body and the anvil rotating body. By pressing the continuous sheet with a plurality of cutter blades provided so as to protrude from the outer peripheral surface of the cutter rotating body when the continuous sheet is passed along the transport direction, the plurality of elasticity Cutting the parts,
The plurality of cutter blades are disposed on the outer peripheral surface of the cutter rotating body at positions shifted from each other in the CD direction, and a certain elastic member is formed by one cutter blade of the plurality of cutter blades. After the cutting, when the one cutter blade is still pressing the continuous sheet, among the plurality of cutter blades, the other cutter blade that cuts the other elastic member next is already the continuous blade. It is in a state of pressing the sheet,
At least one cutter blade is located at a position between the one cutter blade and the other cutter blade in the CD direction,
Over the first and last all of the cutter blade other than the cutting blade for cutting the elastic members among the plurality of cutter blades, the number of pre-Symbol cutter blade for pressing the continuous sheet simultaneously, aligned in a predetermined number An apparatus for producing a sheet-like member according to an absorbent article. An apparatus for manufacturing a sheet-like member having a high stretch region and a low stretch region having lower stretchability in a predetermined direction than the high stretch region, arranged in the predetermined direction,
In a state where a plurality of elastic members extending in the predetermined direction in an extended state in the predetermined direction are arranged in a CD direction intersecting the predetermined direction, a continuous sheet fixed at least in a region corresponding to the high stretchable region, A transport device that transports the predetermined direction as the transport direction;
By cutting each of the plurality of elastic members at one location in the transport direction in a region corresponding to the low expansion / contraction region, and contracting the plurality of elastic members toward a region corresponding to the high expansion / contraction region, A cutter device that forms the high stretch region and the low stretch region in the continuous direction on the continuous sheet, and
The cutter device includes a cutter rotating body and an anvil rotating body that rotate to face each other's outer peripheral surfaces, and the plurality of elastic members are fixed between the rotating cutter rotating body and the anvil rotating body. By pressing the continuous sheet with a plurality of cutter blades provided so as to protrude from the outer peripheral surface of the cutter rotating body when the continuous sheet is passed along the transport direction, the plurality of elasticity Cutting the parts,
The plurality of cutter blades are disposed on the outer peripheral surface of the cutter rotating body at positions shifted from each other in the CD direction, and a certain elastic member is formed by one cutter blade of the plurality of cutter blades. After the cutting, when the one cutter blade is still pressing the continuous sheet, among the plurality of cutter blades, the other cutter blade that cuts the other elastic member next is already the continuous blade. It is in a state of pressing the sheet,
At least one cutter blade is located at a position between the one cutter blade and the other cutter blade in the CD direction,
Each cutter blade that cuts the elastic member first and last among the plurality of cutter blades has a portion that does not overlap with any of the plurality of cutter blades in the rotation direction. ,
The cutter rotating body has a dummy cutter blade at a position where none of the plurality of elastic members is cut,
The said dummy cutter blade is provided so that it may overlap with the said rotation direction with respect to the said non-overlapping part, The manufacturing apparatus of the sheet-like member which concerns on the absorbent article characterized by the above-mentioned. An apparatus for manufacturing a sheet-like member having a high stretch region and a low stretch region having lower stretchability in a predetermined direction than the high stretch region, arranged in the predetermined direction,
In a state where a plurality of elastic members extending in the predetermined direction in an extended state in the predetermined direction are arranged in a CD direction intersecting the predetermined direction, a continuous sheet fixed at least in a region corresponding to the high stretchable region, A transport device that transports the predetermined direction as the transport direction;
By cutting each of the plurality of elastic members at one location in the transport direction in a region corresponding to the low expansion / contraction region, and contracting the plurality of elastic members toward a region corresponding to the high expansion / contraction region, A cutter device that forms the high stretch region and the low stretch region in the continuous direction on the continuous sheet, and
The cutter device includes a cutter rotating body and an anvil rotating body that rotate to face each other's outer peripheral surfaces, and the plurality of elastic members are fixed between the rotating cutter rotating body and the anvil rotating body. By pressing the continuous sheet with a plurality of cutter blades provided so as to protrude from the outer peripheral surface of the cutter rotating body when the continuous sheet is passed along the transport direction, the plurality of elasticity Cutting the parts,
The plurality of cutter blades are disposed on the outer peripheral surface of the cutter rotating body at positions shifted from each other in the CD direction, and a certain elastic member is formed by one cutter blade of the plurality of cutter blades. After the cutting, when the one cutter blade is still pressing the continuous sheet, among the plurality of cutter blades, the other cutter blade that cuts the other elastic member next is already the continuous blade. It is in a state of pressing the sheet,
At least one cutter blade is located at a position between the one cutter blade and the other cutter blade in the CD direction,
Any cutter blade of the plurality of cutter blades does not overlap in the CD direction at the position of each blade edge, the sheet-like member manufacturing apparatus according to the absorbent article.

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