JP2016087327A - Method and apparatus for manufacturing sheet-like member relating to absorbent article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for manufacturing a sheet-like member relating to an absorbent article in which the generation of scrap pieces of an elastic member is prevented while preventing the cut loss of the elastic member of the position of both ends in the CD direction.SOLUTION: A method for manufacturing a sheet-like member relating to an absorbent article is characterized by: transporting a continuous sheet fixed in a correspondence region of a high stretching region, while elastic members 27s continuous in a predetermined direction in an extended state are arranged in the CD direction intersecting with the predetermined direction; cutting the elastic member in one place of the transport direction in the correspondence region of a low stretching region; contracting two or more elastic members toward the correspondence region of the high stretching region; arranging and forming the high stretching region and the low stretching region in the transport direction; and clamping the continuous sheet with a cutter blade and an anvil rotating body, and cutting the elastic member when the continuous sheet passes along the transport direction. A second cutter blade C2 overlapping in the CD direction exists in a first cutter blade C1 positioned at both ends in the CD direction, and a third cutter blade C3 exists in a position different from a portion where the first/second blades overlap in the CD direction at the position between the first cutter blade and the second cutter blade.SELECTED DRAWING: Figure 11

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 it has is used.

Such a sheet-like member 20s ′ is generated as follows. FIG. 1A is an explanatory diagram of the generation process, and is a schematic plan view of the sheet-like member 20s ′.
First, the continuous sheet 20s ′ continuous in a predetermined direction is transported with the predetermined direction as the transport direction. Further, a plurality of elastic members 27s ′ such as rubber thread, which are fed in the same direction in an extended state in the transport direction, are supplied to the continuous sheet 20s ′ 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 20s ′ in the area AL1 ′ corresponding to the low expansion / contraction area AL ′, but in the area AH1 ′ corresponding to the high expansion / contraction area AH ′. It is fixed to the continuous sheet 20s ′ using an agent or the like. Then, in the area AL1 ′ corresponding to the low expansion / contraction area AL ′, the plurality of elastic members 27s ′, 27s ′,... Are cut at one place PC in the transport direction, and the cut elastic members 27 ′ are respectively cut. The regions AH1 ′ and AH1 ′ corresponding to the highly stretchable regions AH ′ and AH ′ are contracted. Thus, the high stretch region AH ′ and the low stretch region AL ′ are formed side by side in the transport direction on the continuous sheet 20s ′.

Special table 2014-511753

  Here, the cutting 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 20s ′ to which the elastic members 27s ′, 27s ′... Shown in FIG. 1A pass is passed between the rotating cutter roll and the anvil roll, the cutter blade on the outer peripheral surface of the cutter roll. Each elastic member 27s', 27s' ... is cut by pressing the elastic members 27s', 27s' ... and the continuous sheet 20s' together in the thickness direction with C ', C' ... and the anvil roll. .

  FIG. 1B shows a reference example of the arrangement pattern of the cutter blades C ′, C ′. In addition, this FIG. 1B is the schematic which expanded and showed the outer peripheral surface of the cutter roll on the plane. In FIG. 1B, the continuous sheet 20s 'and the elastic member 27s' are also virtually shown.

  In this reference example, each cutter blade C ′ is arranged corresponding to each elastic member 27s ′, thereby cutting each elastic member 27s ′ at one place in the conveying direction as described above. Like to do. Basically, each cutter blade C ′ has a substantially central position in the CD direction of the cutter blade C ′ as a cutting position of the elastic member 27s ′, and the cutter blade C ′ adjacent to the CD direction. There is a gap S in the CD direction between them.

  However, the positions in the CD direction of the elastic members 27s', 27s' ... fixed to the continuous sheet 20s' can vary due to various factors. For example, the continuous sheet 20s ′ may contract in the CD direction due to the contraction force in the conveyance direction of each elastic member 27s ′, but the position of each elastic member 27s ′ in the CD direction may vary due to the contraction. . If the elastic member 27s 'moves to the position of the gap S due to this variation, the elastic member 27s' is cut off.

  On the other hand, as shown in FIG. 1B, the degree of shrinkage is generally greater at the end than at the center in the CD direction. Therefore, the position variation in the CD direction of the elastic member 27s 'is also larger at the end in the CD direction. As a result, the cutout of the elastic member 27' as described above is more likely to occur at both ends than in the center in the CD direction. Therefore, as shown in FIG. 1C, as a measure against this cut-off, at least the cutter blades CE ′ and CE ′ positioned at both ends in the CD direction are respectively connected to the cutter blades CA ′ and CA ′ adjacent to the CD direction and the CD direction. It is conceivable to overlap.

  However, when the cutter blades CE ′ and CA ′ that overlap each other are arranged close to each other in the rotation direction of the cutter roll, as shown in FIGS. 1D and 1E, the cutter blades CE ′ are cut by the cutter blade CE ′ located on the downstream side. When the elastic member 27s ′ is contracted toward the upstream side in the conveyance direction, which is the rotational direction, there is a risk that the upstream cutter blade CA ′ may cut the second time without intention. In that case, as shown in FIG. 1E, the chopped piece 27sd ′ of the elastic member 27s ′ is generated, and the diaper generated based on the continuous sheet 20s ′ in which the chopped piece 27sd ′ is wound is obtained. There is a risk of being discarded as a defective product containing foreign matter, which may lead to a deterioration in product yield.

  The present invention has been made in view of the conventional problems as described above, and the object thereof is to prevent the elastic members from being cut off at both ends in the CD direction, while preventing the elastic members from being cut off. It is to prevent generation.

The main invention for achieving the above object is:
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 sandwiching the continuous sheet with the plurality of cutter blades on the outer peripheral surface and the anvil rotor.
Each of the first cutter blades located at both ends in the CD direction among the plurality of cutter blades has a second cutter blade that overlaps in the CD direction, respectively.
At least one third cutter blade is located at a position between the first cutter blade and the second cutter blade in the rotation direction of the cutter rotating body, and the third cutter blade is in the CD direction. In the manufacturing of the sheet-like member according to the absorbent article, the first cutter blade and the second cutter blade are arranged at positions different from the portions overlapping in the CD direction. Is the method.
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 cutter rotating body and the anvil rotating body. When the continuous sheet passes along the conveyance direction, the plurality of elastic members are cut by sandwiching the continuous sheet with the plurality of cutter blades on the outer peripheral surface of the cutter rotating body and the anvil rotating body. And
Each of the first cutter blades located at both ends in the CD direction among the plurality of cutter blades has a second cutter blade that overlaps in the CD direction, respectively.
At least one third cutter blade is located at a position between the first cutter blade and the second cutter blade in the rotation direction of the cutter rotating body, and the third cutter blade is in the CD direction. In the manufacturing of the sheet-like member according to the absorbent article, the first cutter blade and the second cutter blade are arranged at positions different from the portions overlapping in the CD direction. Device.
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 production | generation of the thin piece of an elastic member can be prevented, preventing cutting off each elastic member of the position of the both ends of CD direction.

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 the schematic of the reference example of the arrangement pattern of cutter blade C ', C' .... It is the schematic of the arrangement | positioning pattern of cutter blade C ', C' ... with which the measure against cutout of the elastic members 27s 'and 27s' located at both ends in the CD direction was taken. FIG. 6 is an explanatory diagram of a problem of generating a fine piece of an elastic member 27s ′ that may occur in the arrangement pattern of the cutter blades C ′, C ′,. FIG. FIG. 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 belly side belt member 20a before cutting the rubber thread 27s 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. 12A and 12B are explanatory diagrams of the lower limit value of the length in the CD direction of the portion OL1 (OL11) where the first cutter blade C1 (C11) and the second cutter blade C2 (C10) overlap. It is explanatory drawing of the upper limit of the length of the CD direction of the overlapping part OL1 (OL11). 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, C ....

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 sandwiching the continuous sheet with the plurality of cutter blades on the outer peripheral surface and the anvil rotor.
Each of the first cutter blades located at both ends in the CD direction among the plurality of cutter blades has a second cutter blade that overlaps in the CD direction, respectively.
At least one third cutter blade is located at a position between the first cutter blade and the second cutter blade in the rotation direction of the cutter rotating body, and the third cutter blade is in the CD direction. In the manufacturing of the sheet-like member according to the absorbent article, the first cutter blade and the second cutter blade are arranged at positions different from the portions overlapping in the CD direction. Is the method.

According to the method for manufacturing a sheet-like member according to such an absorbent article, the first cutter blades located at both ends in the CD direction have second cutter blades that overlap in the CD direction. Therefore, even if the elastic members at both positions at both ends change in the CD direction, the elastic members are prevented from being broken.
In addition, at least one third cutter blade is located at a position between the first cutter blade and the second cutter blade in the rotation direction, whereby the position of the first cutter blade and the second cutter blade are determined. The position of the blade is moderately spaced in the rotational direction. Therefore, an appropriate time difference can be ensured between the cutter blade to be cut first among these two cutter blades and the cutter blade to be cut later. And thereby, it is possible to effectively prevent the elastic member from being generated when the elastic member is located at a portion where the first cutter blade and the second cutter blade overlap in the CD direction. it can. That is, after the downstream cutter blade cuts the elastic member, the upstream cutter blade can be prevented from making a second cut with respect to the elastic member contracting to the upstream side in the rotational direction. As a result, it is possible to prevent the generation of thin pieces of the elastic member. Incidentally, the above-mentioned third cutter blade is arranged at a position different from the portion where the first cutter blade and the second cutter blade overlap in the CD direction with respect to the position in the CD direction. Therefore, it is also avoided that the third cutter blade cuts the second time and is involved in the generation of the above-mentioned elastic member.

A method for producing a sheet-like member according to such an absorbent article,
It is preferable that the third cutter blade is disposed at a position where neither the first cutter blade nor the second cutter blade overlaps in the CD direction.

  According to the method for manufacturing a sheet-like member related to such an absorbent article, it is possible to reliably avoid the third cutter blade from being involved in the generation of the fine piece of the elastic member.

A method for producing a sheet-like member according to such an absorbent article,
The length of the portion where the first cutter blade and the second cutter blade overlap in the CD direction is the CD direction of the elastic member to be cut by the first cutter blade among the plurality of elastic members. It is desirable to be larger than

  According to the method for manufacturing a sheet-like member according to such an absorbent article, the length of the overlapping portion is larger than the dimension in the CD direction of the elastic member to be cut by the first cutter blade. Therefore, even if the same elastic member is located at a portion where the first cutter blade and the second cutter blade overlap, the elastic member can be stably cut. That is, the probability of cutting one elastic member jointly with two cutter blades is reduced, such as cutting a part of the elastic member in the CD direction with the first cutter and cutting the remaining portion with the second cutter blade. That is, the probability of cutting the elastic member in a self-contained manner with only one of the cutter blades can be increased. Therefore, the elastic member can be stably cut, and this also contributes to the prevention of breakage.

A method for producing a sheet-like member according to such an absorbent article,
The length of the portion where the first cutter blade and the second cutter blade overlap in the CD direction is the CD direction of the elastic member to be cut by the first cutter blade among the plurality of elastic members. It is desirable that the value is less than half the distance in the CD direction between the target position of the CD and the target position in the CD direction of the elastic member to be cut by the second cutter blade.

  According to the method for manufacturing a sheet-like member according to such an absorbent article, it is possible to suppress a decrease in strength of the continuous sheet and prevent troubles such as breakage of the sheet. Details are as follows. First, the continuous sheet portion clamped by the cutter blade along with the cutting of the elastic member penetrates in the thickness direction or is thin, and its strength is low. On the other hand, when two such low-strength portions are adjacent to each other and overlap in the CD direction, and the length of the overlapping portions is long, the continuous sheet can be greatly reduced in strength. However, according to the above-described manufacturing method, the length of the portion where the first cutter blade and the second cutter blade overlap in the CD direction is the length of each of the two cutter blades to be cut. It is smaller than half the value of the distance between the arrangement target positions of the members. Therefore, it is possible to shorten the length of the portion where the portions whose strength is reduced by being clamped by the cutter blade overlap in the CD direction, and as a result, the strength reduction of the continuous sheet can be suppressed.

A method for producing a sheet-like member according to such an absorbent article,
Among the plurality of cutter blades, the fourth cutter blade located closer to the center in the CD direction than the first cutter blade has a fifth cutter blade that overlaps in the CD direction,
At least one sixth cutter blade is located at a position between the fourth cutter blade and the fifth cutter blade in the rotation direction of the cutter rotating body, and the sixth cutter blade is in the CD direction. For the position, the fourth cutter blade and the fifth cutter blade are arranged at a position different from the portion overlapping in the CD direction,
The length of the portion where the fourth cutter blade and the fifth cutter blade overlap in the CD direction is longer than the length of the portion where the first cutter blade and the second cutter blade overlap in the CD direction. It is desirable to be short.

  According to the method for manufacturing a sheet-like member according to such an absorbent article, at the center position in the CD direction where cutting is difficult to occur, the length of the portion where the cutter blades overlap is shortened, While suppressing the decrease in strength of the continuous sheet, the length of the portion where the cutter blades overlap at the end position in the CD direction where cutting is likely to occur is lengthened, thereby preventing the elastic member from being broken. obtain. Therefore, it is possible to effectively prevent the elastic member from being cut as a whole while suppressing the decrease in strength of the continuous sheet as a whole.

A method for producing a sheet-like member according to such an absorbent article,
Among the plurality of cutter blades, any cutter blade other than the first cutter blades located at both ends in the CD direction has cutter blades that overlap in the CD direction on both sides in the CD direction. And
It is desirable that any of the cutter blades has a cutter blade corresponding to the third cutter blade.

  According to the method for producing a sheet-like member according to such an absorbent article, for all the elastic members to be cut by the plurality of cutter blades, prevention of cutting failure and generation of thin pieces of elastic members are prevented. Can be achieved.

A method for producing a sheet-like member according to such an absorbent article,
After cutting an elastic member by one cutter blade among the plurality of cutter blades and when the one cutter blade is still being pressed toward the anvil rotor, the plurality of cutter blades Among them, the other cutter blade that cuts the other elastic member next has already been pressed toward the anvil rotating body,
It is desirable that at least one cutter blade is located at a position between the one cutter blade and the other cutter blade in the CD direction.

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, and this also contributes to the prevention of cutting of the elastic member.
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.

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

  According to the method for manufacturing a sheet-like member according to such an absorbent article, at least after the cutting of the elastic member, at least one of the cutter blades other than the cutter blade that finally cuts the elastic member The two-point support state described above can be achieved in cooperation with the cutter blade corresponding to the above. 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,
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.

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 cutter rotating body and the anvil rotating body. When the continuous sheet passes along the conveyance direction, the plurality of elastic members are cut by sandwiching the continuous sheet with the plurality of cutter blades on the outer peripheral surface of the cutter rotating body and the anvil rotating body. And
Each of the first cutter blades located at both ends in the CD direction among the plurality of cutter blades has a second cutter blade that overlaps in the CD direction, respectively.
At least one third cutter blade is located at a position between the first cutter blade and the second cutter blade in the rotation direction of the cutter rotating body, and the third cutter blade is in the CD direction. In the manufacturing of the sheet-like member according to the absorbent article, the first cutter blade and the second cutter blade are arranged at positions different from the portions overlapping in the CD direction. Device.

  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, when the belt member 20a is clamped (pressed) from the thickness direction by a cutter device 50 described later in the area AL1 corresponding to the non-stretchable area AL, thereby cutting the thread rubbers 27s, 27s. As shown in FIG. 7, the cut rubber threads 27, 27... Shrink toward the lateral ends, and generally do not stay in the region AL1 corresponding to the non-stretchable region AL in the central region ADc, but end regions ADe. The region AH1 corresponding to the expansion / contraction region AH in FIG. 4 is generally retained, whereby the non-expansion / contraction region AL is formed in the central region ADc and the expansion / contraction region AH is formed in the end-side region ADe.

  Incidentally, in this example, a linear crimping portion j is formed at each position PC1 pressed (pressed) in the thickness direction in the abdominal band member 20a when cutting the 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 the outer layer continuous sheet 21s and the inner sheet continuous sheet 22s. 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. The cutter blades C, C... And the outer peripheral surface 51 ua of the anvil roll 51 u are pressed. Then, the thread rubber continuums 27s, 27s,... Are cut at the clamped positions PC1, respectively, so that the cut rubber thread 27 corresponds to the high expansion / contraction region AH as shown in FIG. 9B. The region AH1 contracts, and as a result, a non-stretchable region AL and a stretchable region 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. 14 and 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 cutting edge in the extending direction is selected from a range of 4 mm to 30 mm, for example, and the dimension WC in the blade width direction orthogonal to the extending direction is selected from a range of 0.1 mm to 1 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. In addition, various descriptions of the positional relationship of the cutter blade C that appear as appropriate below, for example, the descriptions regarding the overlap in the CD direction and the overlap in the rotation direction Dc51d, are all the positional relationships at the position of the cutting edge of the cutter blade C. I am saying that.

  On the other hand, as described above with reference to FIG. 9A, the thread rubber continuums 27 s, 27 s... To be cut are placed along the MD direction in the lower region AD of the sheet-like member 20 as CD direction. 11 are arranged side by side in the same CD direction with an appropriate interval between the adjacent thread rubber continuum 27s. And in this cutter roll 51d, by performing the rotation operation in conjunction with the conveying operation of the sheet-like member 20as, as shown in FIG. 9B, these 11 thread rubber continuous bodies 27s, 27s... , 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 is provided with one cutter blade C for each of the thread rubber continuums 27s, 27s. 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.

  Further, at each position PC1 where each cutter blade C is clamped in accordance with such cutting, the continuous sheet 21s of the outer layer sheet and the continuous sheet 22s of the inner layer sheet related to the sheet-like member 20as are pressure-bonded. As shown in FIG. 11, as an example, a plurality of 11 linear crimping portions j, j... Are formed by shifting the position 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.

  Further, as shown in FIG. 11, these 11 cutter blades C are provided with their positions in the CD direction being shifted from each other, but for convenience of explanation, each of the 11 cutter blades is shown in FIG. New symbols C1 to C11 are assigned to C, C... In the order of arrangement from one side (upper side in FIG. 11) to the other side (lower side in FIG. 11) in the CD direction.

  By the way, in the present embodiment, the problem of the present invention described above, that is, “the continuous body 27s, 27s, 27s, 27s, 27s, In order to solve the problem of “preventing the generation of 27 s cut pieces”, each of the cutter blades C1, C11 (corresponding to the first cutter blade, hereinafter also referred to as the first cutter blade) located at both ends in the CD direction The cutter blades C2 and C10 (corresponding to the second cutter blade, hereinafter also referred to as the second cutter blade) that overlap each other in the CD direction are present. As a result, even if the thread rubber continuums 27s and 27s at the respective positions PMCD1 and PMCD11 at both ends in the CD direction fluctuate in the CD direction, the continuous bodies 27s and 27s are prevented from being cut off. .

  Further, as is apparent with reference to FIG. 11, a third cutter blade is provided at a position between the first cutter blade C1 (C11) and the second cutter blade C2 (C10) in the rotational direction Dc51d. The cutter blades C4, C7, and C10 (C2, C6, and C9) are positioned, whereby the position of the first cutter blade C1 (C11) and the position of the second cutter blade C2 (C10) are in the rotation direction Dc51d. Is moderately spaced. Therefore, an appropriate time difference is ensured between the cutter blade C1 (C10) to be cut first among these two cutter blades C1 and C2 (C11, C10) and the cutter blade C2 (C11) to be cut later. be able to. Thus, when the rubber thread continuum 27s is positioned in the portion OL1 (OL11) where the first cutter blade C1 (C11) and the second cutter blade C2 (C10) overlap in the CD direction. It is possible to effectively prevent the generation of fine pieces of the continuous thread rubber 27s that may occur in the following. That is, after the downstream cutter blade C1 (C10) cuts the thread rubber continuous body 27s, the upstream cutter blade C2 (C11) with respect to the thread rubber continuous body 27s contracting to the upstream side in the rotational direction Dc51d. ) Can be prevented from being cut for the second time, and as a result, it is possible to prevent the generation of small pieces of the thread rubber continuous body 27s. Incidentally, the third cutter blades C4, C7, C10 (C2, C6, C9) are in the CD direction, with the first cutter blade C1 (C11) and the second cutter blade C2 (C10) in the CD direction. It is arranged at a position different from the portion OL1 (OL11) that overlaps with each other. Therefore, it is also avoided that the third cutter blades C4, C7, C10 (C2, C6, C9) are cut for the second time and are involved in the generation of the fine pieces of the continuous rubber rubber 27s. ing.

  Further, in this example, all of the third cutter blades C4, C7, C10 (C2, C6, C9) are over in the CD direction with respect to both the first cutter blade C1 (C11) and the second cutter blade C2 (C10). It is placed in a position that does not wrap. Therefore, it is possible to more reliably avoid the third cutter blades C4, C7, C10 (C2, C6, C9) from being involved in the generation of small pieces of the continuous thread rubber 27s.

  Note that the length of the overlapping portion OL1 (OL11) in the CD direction is preferably in the following range. That is, the lower limit of the above range may be defined as a value larger than the dimension L in the CD direction of the thread rubber continuous body 27s to be cut by the first cutter blade C1 (C11). Regarding the upper limit, the arrangement target position PMCD1 (PMCD11) in the CD direction of the thread rubber continuous body 27s to be cut by the first cutter blade C1 (C11) and the yarn to be cut by the second cutter blade C2 (C10). It may be defined as a value smaller than half the value of the distance LCD1 (LCD11) in the CD direction between the rubber continuous body 27s and the arrangement target position PMCD2 (PMCD10) in the CD direction.

  And if a lower limit is prescribed | regulated like the former, temporarily 27s of said thread rubber will be in part OL1 (OL11) where 1st cutter blade C1 (C11) and 2nd cutter blade C2 (C10) overlap. Even when is positioned, the continuum 27s can be stably cut. Details are as follows. First, when the length of the overlapping portion OL1 (OL11) in the CD direction is equal to or less than the dimension L27s in the CD direction of the continuous thread rubber 27s as shown in FIG. 12A, the continuous thread rubber is continuous as shown in FIG. 12A. A part 27sp1 in the CD direction of the body 27s is cut with the first cutter C1 (or the second cutter blade (C10)), and the remaining part 27sp2 is cut with the second cutter blade C2 (or the first cutter blade (C11)). To be specific, the two cutter blades C1, C2 (C10, C11) jointly cut one thread rubber continuous body 27s, so that it is difficult to reliably cut. On the other hand, as shown in FIG. 12B, when the length in the CD direction of the overlapping portion OL1 (OL11) is larger than the dimension L27s in the CD direction of the continuous body 27s of the rubber thread, Thus, the probability of cutting the thread rubber continuous body 27s in a self-contained manner with only one of the first cutter blade C1 (C11) or the second cutter blade C2 (C10) can be increased. Accordingly, the thread rubber continuous body 27s can be stably cut.

  If the upper limit is defined as in the latter case, it is possible to suppress a decrease in the strength of the sheet-like member 20as accompanying the cutting of the thread rubber continuous body 27s, and to prevent troubles such as breakage of the sheet-like member 20as. Details are as follows. First, as shown in FIG. 13, the portions j1, j2 (j11, j10) of the sheet-like member 20as clamped by the cutter blades C1, C2 (C11, C10) in accordance with the cutting of the continuous thread rubber 27s are as follows. The film is thin in the thickness direction, and its strength is low. In addition, when two such low-strength portions j1, j2 (j11, j10) are adjacent and overlapped in the CD direction, the longer the length of the overlapping portion OL1j (OL11j), the longer the sheet The strength of the shaped member 20as can be reduced. In this respect, if the upper limit is defined as described above, that is, the length of the overlapping portion OL1 (OL11) is determined by the two cutter blades C1, C2 (C11, C10) as the objects to be cut. The cutter blades C1, C2 (C11, C10) are less than half the distance LCD1 (LCD11) between the arrangement target positions PMCD1, PMCD2 (PMCD11, PMCD10) of the thread rubber continuum 27s. ), The length of the portion OL1j (OL11j) where the portions j1, j2 (j11, j10), which have been reduced in strength by being pressed together, overlap in the CD direction can be shortened. As a result, a decrease in strength of the sheet-like member 20as can be suppressed.

  By the way, in this example, the arrangement of the cutter blades C is devised to suppress the vibration of the cutter roll 51d that occurs when the continuous thread rubber 27s is cut. The suppression of this vibration can also contribute to the prevention of breakage of the continuous thread rubber 27s. Therefore, in the following, this arrangement device will be described.

First, paying attention to the two cutter blades C1 and C4 in FIG. 11, these two cutter blades C1 and C4 are arranged as follows. That is, the two cutter blades C1 and C4 are arranged adjacent to each other in the rotational direction Dc51d. Here, the cutter blade C1 located on the downstream side of the rotational direction Dc51d is at least the same blade C1. At the upstream position in the rotational direction Dc51d from the position PC where the rubber continuous body 27s is cut, the upstream cutter blade C4 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 C4 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 C4 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.

  In this example, as shown in FIG. 11, at least one of two cutter blades C2 and C3 is located between the former cutter blade C1 and the latter cutter blade C4 in the CD direction. Thus, the cutter blades C1 and C4 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 C2, C3 is located at a position between the CD directions of the two cutter blades C1, C4 that are continuously cut 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 C9 that finally cuts the continuous thread rubber 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 above-mentioned other cutter blade C4 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 C9 positioned at the uppermost stream in the rotational direction Dc51d corresponds to the cutter blade C9 that cuts the thread rubber continuous body 27s at the end described above. When attention is paid to the two cutter blades C4 and C7 in FIG. 11, among these two cutter blades C4 and C7, the cutter blade C4 located on the downstream side in the rotational direction Dc51d is at least the blade C4 is made of thread rubber. At a position upstream of the position PC where the continuum 27s is cut in the rotational direction Dc51d, the upstream cutter blade C7 overlaps the rotational direction Dc51d. Therefore, after the former cutter blade C4 cuts the thread rubber continuum 27s and the cutter blade C4 is still pressed against the anvil roll 51u, the other thread rubber continuum 27s is moved to the next. The latter cutter blade C7 to be cut has already been pressed toward the anvil roll 51u, so that these two cutter blades C4 and C7 can also be in a two-point support state. In addition, in the CD direction, two cutter blades C5 and C6 are located as an example between the former cutter blade C4 and the latter cutter blade C7. The cutter blades C4 and C7 are greatly separated in the CD direction.

  The same is true for the cutter blades C7 and C10. Similarly, the cutter blades C10 and C2, the cutter blades C2 and C5, the cutter blades C5 and C8, the cutter blade C8, The case where attention is paid to C11, cutter blades C11 and C3, cutter blades C3 and C6, and cutter blades C6 and C9 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 C9 that finally cuts the continuous thread rubber 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 C2 and C5 adjacent to the rotation direction Dc51d, when the cutter blade C2 located downstream of the rotation direction Dc51d cuts the continuous thread rubber 27s. The cutter blade C5 already positioned on the upstream side is also pressed toward the anvil roll 51u. That is, the upstream cutter blade C5 exists across the rotational direction Dc51d across the position PC where the downstream cutter blade C2 cuts the continuous thread rubber 27s. 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 C2 in FIG. 11 overlaps the downstream end (right end in the drawing) of the rotation direction Dc51d in the cutter blade C5. It is located slightly upstream (left side in the figure) in the rotational direction Dc51d from (the ruled line along the CD direction).
Therefore, from the time when the cutter blade C2 is cut, the cutting reaction force that can act on the cutter roll 51d can be reliably received not only by the downstream cutter blade C2 but also by the upstream cutter blade C5. 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 C2 and the upstream cutter blade C5.
Incidentally, there are other pairs of cutter blades C and C that satisfy this requirement. For example, the above-described two-point support state at the moment of cutting is also realized for a pair of cutter blades C7 and C10, a pair of cutter blades C8 and C11, a pair of cutter blades C3 and C6, 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 magnitude of the inclination angle α is set to 30 °, and as to the inclination direction, all the cutter blades C, C... It is set to be displaced to the same side.

  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.

  Further, 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. ing. 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. 14 is a schematic plan view of a first modification of the arrangement pattern of the cutter blades C, C.
In the above-described embodiment, as shown in FIG. 11, only the first cutter blade C1 (C11) located at both ends in the CD direction in the cutter block 54 has the second cutter blade C2 (C10) overlapping in the CD direction. Had. That is, when attention is paid only to the cutter blades C2 to C10, none of the cutter blades C2 to C10 overlaps with the cutter blade C adjacent in the CD direction.
In this regard, in the first modification, cutter blades C2 to C8 other than the first cutter blades C1 and C10 have cutter blades C and C that overlap on both sides in the CD direction, respectively. . That is, the cutter blades C2 to C8 respectively have portions OL and OL that overlap with other cutter blades C and C on both sides in the CD direction. Further, a cutter blade C corresponding to the above-mentioned third cutter blade is also present at a position between the rotation directions Dc51d of the cutter blades C and C that overlap each other in the CD direction. For this reason, according to the arrangement pattern of the first modified example, it is possible to effectively prevent the generation of the thin pieces while preventing the continuous pieces 27s, 27s.
The difference of the first modification from the above-described embodiment is mainly that described above, and other points are substantially the same as those of the above-described embodiment. That is, the device on the arrangement pattern for suppressing the vibration of the cutter roll 51d described in the above embodiment is also applied to the first modification example. it is obvious. Therefore, detailed description thereof is omitted.

In some cases, as shown in FIG. 15, the cutter blades C2 to C10 (corresponding to the fourth cutter blade) located on the center side of the first cutter blades C1 and C11 located at both ends in the CD direction are respectively It has a cutter blade C (corresponding to a fifth cutter blade) that overlaps in the CD direction, and the first cutter blade C1 (C11) and the second cutter blade C2 (C10) than the length of the overlapping portion OL. ) May overlap the length of the portion OL1 (OL11) that overlaps in the CD direction.
And if it does in this way, the length of the part OL where the cutter blades C and C overlap will be shortened in the center position of the CD direction which is hard to cut out, and thereby, the sheet-like member 20as is While suppressing the decrease in strength, the length of the portion OL1 (OL11) where the cutter blades C1, C2 (C11, C10) overlap each other is increased at the end position in the CD direction where cutting is likely to occur. Accordingly, it is possible to prevent the thread rubber continuous body 27s from being cut off. Therefore, it is possible to effectively prevent the thread rubber continuous body 27s from being cut as a whole, while suppressing a decrease in strength of the sheet-like member 20as as a whole.
Incidentally, among the cutter blades C2 to C10 in FIG. 15, the position between the cutter blades C and C corresponding to the fourth cutter blade C and the fifth cutter blade C between the rotational directions Dc51d, that is, in the CD direction. A cutter blade C corresponding to the aforementioned third cutter blade is also present at a position between the overlapping cutter blades C and C in the rotational direction Dc51d. Therefore, it goes without saying that the generation of the fine pieces of the continuous thread rubber 27s is also effectively prevented.

=== 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. 9B, the linear crimping portion j is formed at the position PC1 pinched (pressed) by the cutter blade C, but this is not a limitation. 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, as shown in FIG. 11, a plurality of thread rubber continuums 27s, 27s... Are exemplified as the plurality of elastic members, and each of the plurality of thread rubber continuums 27s, 27s. On the other hand, the cutter blades C, C... Are provided one by one, but the present invention is not limited to this. For example, as an example of two or more, one cutter blade C may be associated with a continuous body 27s of two or three thread rubbers. 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.

  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 sheet-like member described above, and each of the thread rubber continuums 27s, 27s... Is between two layers of the exterior sheet continuum. 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 the manufacturing apparatus 30 of the present invention are applicable to any absorbent article that uses the sheet-like member 20as as described above as a material. Therefore, the concept of this absorbent article includes a urine absorbing pad and a sanitary napkin.

  DESCRIPTION OF SYMBOLS 1 Disposable diaper (absorbent article) 1HB waist opening, 1HL leg opening, 10 absorbent main body, 10ea end part, 10eb end part, 11 absorbent core, 12 covering sheet, 13 surface sheet, 15 back sheet, 15f resin film 15nw non-woven fabric, 17r elastic member, 20a ventral band member, 20ac central region, 20ae end, 20be end, 20as sheet-like member, 20b dorsal band member, 21 outer layer sheet, 21p portion, 21s continuous sheet, 22 inner layer sheet, 22e end, 22s continuous sheet, 25 thread rubber, 25s thread rubber continuum, 27 thread rubber, 27s thread rubber continuum (elastic member, thread rubber), 27sd chopped piece, 27sp1 part, 27sp2 remaining part, 30 manufacturing apparatus, 40 conveying apparatus, 40R conveying 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 (first cutter blade), C2 cutter blade (second cutter blade, third cutter blade), C3 cutter blade, C4 cutter blade (third cutter blade), C5 cutter blade, C6 cutter blade (third Cutter blade), C7 cutter blade (third cutter blade), C8 cutter blade, C9 cutter blade (third cutter blade), C10 cutter blade (second cutter blade, third cutter blade), C11 cutter blade (first cutter) Blade), j linear crimping part, j1 part, j2 part, j10 part , J11 portion, S gap, OL overlapping portion, OL1 overlapping portion, OL11 overlapping portion, OL1j overlapping portion, OL11j overlapping portion, AU upper region, AD lower region, ADc central region, ADe End side area, AH stretch area (high stretch area), AH1 area, AH2 area, AL non-stretch area (low stretch area), AL1 area, PC position, PC1 position, PMCD1 placement target position, PMCD2 placement target position, LSG solid Gather, LG Girder gather, CL10 approximately center,

The main invention for achieving the above object is:
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 sandwiching the continuous sheet with the plurality of cutter blades on the outer peripheral surface and the anvil rotor.
Each of the first cutter blades located at both ends in the CD direction among the plurality of cutter blades has a second cutter blade that overlaps in the CD direction, respectively.
At least one third cutter blade is located at a position between the first cutter blade and the second cutter blade in the rotation direction of the cutter rotating body, and the third cutter blade is in the CD direction. The position of the first cutter blade and the second cutter blade is arranged at a position different from the overlapping portion in the CD direction, and the third cutter blade includes the first cutter blade and the first cutter blade It is a manufacturing method of the sheet-like member concerning an absorptive article characterized by being arranged in the position where neither of the 2nd cutter blades overlaps in the above-mentioned CD 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 cutter rotating body and the anvil rotating body. When the continuous sheet passes along the conveyance direction, the plurality of elastic members are cut by sandwiching the continuous sheet with the plurality of cutter blades on the outer peripheral surface of the cutter rotating body and the anvil rotating body. And
Each of the first cutter blades located at both ends in the CD direction among the plurality of cutter blades has a second cutter blade that overlaps in the CD direction, respectively.
At least one third cutter blade is located at a position between the first cutter blade and the second cutter blade in the rotation direction of the cutter rotating body, and the third cutter blade is in the CD direction. The position of the first cutter blade and the second cutter blade is arranged at a position different from the overlapping portion in the CD direction, and the third cutter blade includes the first cutter blade and the first cutter blade Both of the second cutter blades are arranged at positions where they do not overlap in the CD direction .
Other features of the present invention will become apparent from the description of the present specification and the accompanying drawings.

Claims (11)

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 sandwiching the continuous sheet with the plurality of cutter blades on the outer peripheral surface and the anvil rotor.
Each of the first cutter blades located at both ends in the CD direction among the plurality of cutter blades has a second cutter blade that overlaps in the CD direction, respectively.
At least one third cutter blade is located at a position between the first cutter blade and the second cutter blade in the rotation direction of the cutter rotating body, and the third cutter blade is in the CD direction. In the manufacturing of the sheet-like member according to the absorbent article, the first cutter blade and the second cutter blade are arranged at positions different from the portions overlapping in the CD direction. Method. It is a manufacturing method of the sheet-like member concerning the absorptive article according to claim 1,
The third cutter blade is disposed at a position where neither the first cutter blade nor the second cutter blade overlaps in the CD direction. A method for producing a sheet-like member according to an absorbent article, . It is a manufacturing method of the sheet-like member concerning the absorptive article according to claim 1 or 2,
The length of the portion where the first cutter blade and the second cutter blade overlap in the CD direction is the CD direction of the elastic member to be cut by the first cutter blade among the plurality of elastic members. The manufacturing method of the sheet-like member which concerns on the absorbent article characterized by being larger than these dimensions. A method for producing a sheet-like member according to any one of claims 1 to 3,
The length of the portion where the first cutter blade and the second cutter blade overlap in the CD direction is the CD direction of the elastic member to be cut by the first cutter blade among the plurality of elastic members. The absorbent article is smaller than a half value of the distance in the CD direction between the arrangement target position of the elastic member to be cut by the second cutter blade and the arrangement target position in the CD direction. The manufacturing method of the sheet-like member which concerns on this. It is a manufacturing method of the sheet-like member concerning the absorptive article according to any one of claims 1 to 4,
Among the plurality of cutter blades, the fourth cutter blade located closer to the center in the CD direction than the first cutter blade has a fifth cutter blade that overlaps in the CD direction,
At least one sixth cutter blade is located at a position between the fourth cutter blade and the fifth cutter blade in the rotation direction of the cutter rotating body, and the sixth cutter blade is in the CD direction. For the position, the fourth cutter blade and the fifth cutter blade are arranged at a position different from the portion overlapping in the CD direction,
The length of the portion where the fourth cutter blade and the fifth cutter blade overlap in the CD direction is longer than the length of the portion where the first cutter blade and the second cutter blade overlap in the CD direction. The manufacturing method of the sheet-like member which concerns on the absorbent article characterized by being short. A method for manufacturing a sheet-like member according to any one of claims 1 to 5,
Among the plurality of cutter blades, any cutter blade other than the first cutter blades located at both ends in the CD direction has cutter blades that overlap in the CD direction on both sides in the CD direction. And
Any one of the cutter blades has a cutter blade corresponding to the third cutter blade, and the method for producing a sheet-like member according to the absorbent article. It is a manufacturing method of the sheet-like member concerning the absorptive article according to any one of claims 1 to 6,
After cutting an elastic member by one cutter blade among the plurality of cutter blades and when the one cutter blade is still being pressed toward the anvil rotor, the plurality of cutter blades Among them, the other cutter blade that cuts the other elastic member next has already been pressed toward the anvil rotating body,
The method for producing 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. It is a manufacturing method of the sheet-like member concerning the absorptive article according to claim 7,
Absorbency characterized in that a cutter blade corresponding to the at least one cutter blade exists for any cutter blade other than the cutter blade that cuts the elastic member lastly among the plurality of cutter blades. A method for producing a sheet-like member according to an article. It is a manufacturing method of the sheet-like member concerning the absorptive article according to claim 7 or 8,
When the one cutter blade cuts the certain elastic member, the other cutter blade is already pressed toward the anvil rotating body. Manufacturing method of member. A method for producing a sheet-like member according to any one of claims 7 to 9,
The number of the cutter blades that are simultaneously pressed toward the anvil rotating body over all the cutter blades of the plurality of cutter blades is 2 or less. Manufacturing method of member. 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 cutter rotating body and the anvil rotating body. When the continuous sheet passes along the conveyance direction, the plurality of elastic members are cut by sandwiching the continuous sheet with the plurality of cutter blades on the outer peripheral surface of the cutter rotating body and the anvil rotating body. And
Each of the first cutter blades located at both ends in the CD direction among the plurality of cutter blades has a second cutter blade that overlaps in the CD direction, respectively.
At least one third cutter blade is located at a position between the first cutter blade and the second cutter blade in the rotation direction of the cutter rotating body, and the third cutter blade is in the CD direction. In the manufacturing of the sheet-like member according to the absorbent article, the first cutter blade and the second cutter blade are arranged at positions different from the portions overlapping in the CD direction. apparatus.

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