JP4573748B2 - Manufacturing method of belt-like sheet - Google Patents

Description

The present invention relates to a method for manufacturing a belt-like sheet and a reforming apparatus.

  Conventionally, an elastic sheet obtained by a method that does not form a gather is known as a material used for clothing and the like. However, such a stretchable sheet is often provided as a strip-shaped original sheet having different stretchability in the longitudinal direction (machine direction) and the width direction. For example, the width direction stretches more than the longitudinal direction. It has been difficult to impart excellent stretchability in the width direction (trunk circumference direction) of a pant-type diaper manufactured by a transverse flow method using a belt-shaped raw fabric sheet having high properties.

  Note that there is known a reversing device that further conveys an object to be conveyed in one direction at a predetermined position in the conveyance path by changing the direction by 90 degrees (see Patent Documents 1 and 2).

JP-A-4-261655 Special table 2003-503108 gazette

The strip-shaped original sheet has a desired property only in one of the longitudinal direction and the width direction, but the original sheet is flowed as it is in a production line for products such as disposable diapers (machine direction). Is introduced in the longitudinal direction, the property may be obtained in a direction different from the direction in which the property is originally required. In such a case, if the strip-shaped raw fabric sheet can be used as a strip-shaped sheet by changing the longitudinal direction and the width direction, a product such as a disposable diaper having a desired property in a desired direction is manufactured. be able to.
For example, if the apparatus described in Patent Documents 1 and 2 can be used to replace the longitudinal direction and the width direction of the original sheet and re-form it into a belt-like sheet, for example, the stretchability in the width direction is higher than the longitudinal direction. A disposable diaper having excellent stretchability in the diaper width direction can be efficiently manufactured by using a cross-flow type pant-type diaper manufacturing machine using a strip-shaped original fabric sheet.
However, since the devices described in Patent Documents 1 and 2 are not configured to overlap the end portions of the sheet after being rotated 90 degrees, the sheet after being rotated 90 degrees is reused as a belt-like sheet. It is difficult to form. When a mechanism for overlapping the end portions of the sheet after being rotated by 90 degrees is provided separately, a complicated mechanism is required, the production facility for the belt-like sheet is complicated, and high-speed productivity is also hindered. Become.

  In addition, after cutting a strip-shaped raw fabric sheet into a short product, a method of connecting the short product and re-forming the strip-shaped sheet is, for example, a plurality of different stretchability in the longitudinal direction and the width direction Each of the belt-like sheets is intermittently cut by the devices described in Patent Documents 1 and 2, or a device to which a cutting device is added, and the sheets generated by the cutting are rotated by 90 degrees, A single sheet obtained from one belt-like sheet and a single sheet obtained from another belt-like sheet are alternately arranged so that the ends of both sheets overlap each other, and the overlapping portions are joined to form a belt-like It is conceivable to re-form the sheet. However, in this case, two systems of a belt-like sheet feeding / conveying mechanism and a device for rotating a cut sheet by 90 degrees are required, which increases the cost of the equipment and requires a large space for installation.

  Accordingly, an object of the present invention is to provide a method for producing a belt-like sheet capable of efficiently and continuously producing a belt-like sheet in which the properties in the longitudinal direction and the properties in the width direction are interchanged from the belt-like raw fabric sheet, and a belt-like raw fabric sheet. An object of the present invention is to provide a simple belt-shaped sheet reforming device having a structure that can be reconfigured as a belt-like sheet in which the properties in the longitudinal direction and the properties in the width direction are interchanged.

  The present invention includes a step of intermittently cutting a belt-shaped raw fabric sheet that is continuously conveyed to sequentially generate a short object, and the respective short objects generated by the cutting are respectively transported to the plane of each short object. A step of rotating 90 degrees around a vertical axis, a step of distributing the short object rotated by 90 degrees to a plurality of conveyance paths, and reducing a pitch between the short objects in each conveyance path; Collecting the shortened short objects on the same conveyance path and arranging them so that the ends of the short objects overlap each other, and joining the ends of the adjacent short objects that overlap each other, re-form it into a band shape The above object is achieved by providing a method for producing a belt-like sheet comprising a step of obtaining a belt-like sheet.

  The present invention has a cutting means for intermittently cutting a strip-shaped raw fabric sheet that is continuously conveyed to sequentially generate short objects, and a plurality of suction heads. The reversing device that rotates 90 degrees around an axis perpendicular to the plane of each short object while being sucked and transported to the surface, and the short object rotated 90 degrees were received from different suction heads of the reversing apparatus, respectively. A plurality of pitch changing devices for shortening the pitch between short objects, a conveying device for receiving a short object with a shortened pitch from the plurality of pitch changing devices so that ends of the short objects overlap each other, and an adjacent short length The above object is achieved by providing a belt-shaped sheet re-forming apparatus provided with a joining means for joining the overlapping end portions of the objects to re-form the belt-shaped sheet.

According to the method for producing a belt-like sheet of the present invention, a belt-like sheet in which the longitudinal direction and the width direction are interchanged can be efficiently and continuously produced from a belt-like raw fabric sheet.
According to the belt-shaped sheet re-forming apparatus of the present invention, the belt-shaped original fabric sheet can be reconfigured as a belt-shaped sheet in which the longitudinal direction and the width direction are interchanged.

Hereinafter, preferred embodiments of the present invention will be described.
As shown in FIG. 2, a preferred embodiment of the method for producing a belt-like sheet of the present invention includes a step 10 in which the belt-shaped raw fabric sheet 2 that is continuously conveyed is intermittently cut to sequentially generate short articles 21 and 22. , The step 20 of rotating the short objects 21 and 22 generated by cutting 90 degrees around the axis P perpendicular to the plane of the short objects 21 and 22 while conveying the short objects 21 and 22, respectively, and the short objects rotated 90 degrees 21 and 22 are distributed to a plurality of transport paths F and G, and in each transport path F and G, the step 30 for shortening the pitch between short objects is the same as the short objects 21 and 22 whose pitches are shortened. The step 40 is arranged so that the ends of the short objects 21 and 22 overlap each other, and the ends 21a and 22a of the adjacent short objects 21 and 22 that overlap each other are joined together to form a belt-like shape. Step 5 for obtaining a re-formed belt-like sheet 7 Become comprises a door.

  For example, a belt-shaped sheet re-forming apparatus 1 as shown in FIG. 1 is preferably used for carrying out the method for manufacturing a belt-shaped sheet of the present embodiment. A belt-shaped sheet reforming apparatus 1 shown in FIG. 1 is an embodiment of the belt-shaped sheet reforming apparatus of the present invention, and intermittently cuts a belt-shaped raw sheet 2 that is continuously conveyed as shown in FIG. It has a cutting means 3 and a plurality of suction heads 41 and 42, and the short objects 21 and 22 generated by the cutting are sucked and transported to the suction heads 41 and 42, on the planes of the respective short objects 21 and 22. The reversing device 4 rotated 90 degrees around the vertical axis P, and the short objects 21 and 22 rotated 90 degrees from the different suction heads of the reversing apparatus 4, respectively, and received the short objects 21, 21,. Or a plurality of pitch changing devices 5A and 5B for shortening the pitch between the two, 22 and 22), respectively, and short objects 21 and 21 with the pitch narrowed from the plurality of pitch changing devices 5A and 5B (or 22, 22). 22 ..) for short object 2 The conveying device 6 that receives the end portions 21a and 22a of the first and second portions 22 and 22 and the joining means 8 that joins the overlapping end portions 21a and 22a of the adjacent short objects 21 and 22 to form the belt-like sheet 7 again. And.

In the belt-shaped sheet reforming apparatus 1 of the present embodiment, on the upstream side of the reversing device 4, an unwinding roll (not shown) that is wound in a roll shape so as to be capable of unwinding the belt-shaped raw sheet 2 is provided. The raw sheet 2 unwound from the unwinding roll at a predetermined feeding speed is guided by a guide roll (not shown), a direction changing roll 91 and the like so as to be continuously supplied to the reversing device 4. Has been made.
As shown in FIG. 1, the reversing device 4 includes a substantially cylindrical rotating drum 43 that rotates in the direction of the arrow R <b> 1 in FIG. 1, and the rotating drum 43 includes a plurality of suction heads 41 and 42 on its peripheral surface. ing. Each of the suction heads 41 and 42 has a negative pressure inside by a suction mechanism (not shown), and the belt-shaped raw sheet 2 is formed on the top surface of each head by suction of air from the top surface of the head toward the inside. In this state, the short objects 21 and 22 generated by cutting are sucked and held, and can be conveyed in the direction of the arrow R1.

  In the belt-shaped sheet reforming apparatus 1 of the present embodiment, as shown in FIG. 1, the belt-shaped raw sheet 2 is supplied onto the peripheral surface portion of the rotary drum 43, and the raw sheet 2 is A cutting roll as the cutting means 3 is arranged around the circumference of the rotary drum 43 moved by about one transport head. The cutting roll 3 is provided with a plurality of cutter blades 31 arranged substantially parallel to the axial length direction on the peripheral surface thereof, and the original fabric sheet 2 is intermittently moved in the longitudinal direction by the cutter blades 31. In addition, the cutting is performed sequentially in the width direction at each cutting point.

  The suction heads 41 and 42 in the reversing device 4 are each rotated 90 degrees around an axis substantially perpendicular to the upper surface of the head, so that the short objects 21 and 22 held by suction on the upper surfaces of the suction heads 41 and 42 are moved. , 90 degrees around an axis P perpendicular to the plane of each short object 21, 22.

The suction heads 41 and 42 are rotated in the direction of the arrow R1 in FIG. 1, and the pitch between them (the pitch measured along the trajectory along which the suction heads 41 and 42 move) is increased or decreased. ing. That is, while the suction heads 41 and 42 move in the range from the introduction part A of the raw sheet 2 to the cutting part B slightly cut by the cutting means 3, the suction heads 41 and 42 are perpendicular to the upper surface of the head. When viewed from the direction, the longitudinal direction of the head is directed to the circumferential direction of the rotating drum 43 and is close enough that there is almost no gap between them, but slightly exceeds the cutting portion B by the cutting roll 3 described above. Around this time, the pitch between the suction heads is slightly widened, and in this state, the 90-degree rotation of the head starts, and the pitch between the suction heads decreases from the middle of the 90-degree rotation. In the state where the pitch between the suction heads 41 and 42 is reduced and at least the pitch between the suction heads is shorter than the overall length in the longitudinal direction of the short object when viewed from the direction perpendicular to the upper surface of the head. Every other short object 21 is delivered from the alternate suction head 41 to the first pitch changing device 5A, and from the remaining suction head 42 to the second pitch changing device 5B. The remaining short object 22 that has not been delivered to the first pitch changing device 5A is delivered.
And after delivering the short object 22 to the 2nd pitch change apparatus 5B, until it returns to the introduction part A of the original fabric sheet 2, the pitch between adsorption heads expands, and in the meantime, The suction heads 41 and 42 each rotate 90 degrees around an axis substantially perpendicular to the upper surface of the head. The rotation direction at this time may be the reverse direction or the same direction as the rotation direction of the suction head before the short object 21 is delivered.

  The change of the pitch between the suction heads 41 and 42 in the reversing device 4 and the rotation of the suction heads 41 and 42 by 90 degrees can be carried out using known methods and devices, for example, between the suction heads 41 and 42. As a method for changing the pitch of the suction head and rotating the suction heads 41 and 42 (and apparatus), methods and apparatuses described in JP-A-63-317576, JP-A-2003-135517, JP-A-3-226411, etc. Can be used. Further, the suction heads 41 and 42 provided in the reversing device 4 have a coaxial rotation shaft for movement of the suction heads 41 and 42, and an end portion on the opposite side of the rotation shaft or the vicinity thereof is connected to each suction head. A plurality of arms (not shown) may be rotated, and the rotation speed of each arm may be individually controlled by a servo motor or the like connected to the rotation shaft of each arm. In this case, as means for rotating the suction head 90 degrees around an axis substantially perpendicular to the upper surface of the head, a cam groove is provided in the vicinity of the track of the suction heads 41 and 42, and the cam groove is connected to each suction head. There is a method in which the protrusion of the driven node is inserted and the reciprocating motion of the driven node generated as the suction heads 41 and 42 are moved is converted into the rotational motion of the head by a known method. As the cam, a cylindrical cam, a plate cam, a front cam, or the like can be used, and instead of providing the cam groove, a protruding portion can be provided, and the driven node can be slidably contacted.

  In the belt-shaped sheet reforming device 1 of the present embodiment, two pitch changing devices, that is, the first pitch changing device 5A and the second pitch changing device are provided at two locations spaced apart from each other in the circumferential direction in the vicinity of the peripheral surface portion of the rotary drum 43. A pitch changing device 5B is provided. The first and second pitch changing devices 5A and 5B are each provided with a rotating drum 51 that rotates in the directions of arrows R2 and R3 in FIG. The rotary drums 51 of the pitch changing devices 5A and 5B have the same configuration except that the rotary drum 43 in the reversing device 4 and the suction head 52 do not rotate 90 degrees and the number of the suction heads 52 is small. Have.

  For example, the pitch changing devices 5A and 5B change the pitch between the suction heads 52 and 52 (the pitch measured along the trajectory along which the suction head 52 moves) while rotating in the direction of the arrow R1 or R2 in FIG. Thus, the pitch between the short objects 21, 21 (or 22, 22) received from the reversing device 4 can be shortened. That is, the pitch of the suction head 52 of the first pitch changing device 5A is larger than the pitch at the time of receiving the short object 21 from the suction head 41 when the received short object 21 is delivered to the suction roll 6 as a conveying means. As a result, the pitch becomes narrower, and the pitch between the short objects 21 and 21 is similarly narrower when delivered to the suction roll 6 than when received from the reversing device 4. The same applies to the second pitch changing device 5B, and the pitch of the suction head 52 is greater than the pitch when the short object 22 is received from the suction head 42 when the received short object 22 is delivered to the suction roll 6. Narrow.

  The movement speed of the suction heads 41, 42 of the reversing device 4 and the increase / decrease of the pitch between the suction heads 41, 42, and the movement speed of the suction head 52 of each of the pitch changing devices 5A, 5B and the increase / decrease of the pitch between the suction heads 52 are The other suction heads 41 of the reversing device 4 and the suction heads 52 of the first pitch changing device 5A regularly face each other at a fixed position, and the remaining suction heads 42 of the reversing device 4 The suction heads 52 of the second pitch changing device 5B are controlled so as to regularly face each other at another fixed position.

The reversing device 4 in the present embodiment includes a suction head 41 that delivers the short object 21 to the first pitch changing device 5A, and a suction head 42 that delivers the short object 22 to the other pitch changing device 5B. Is different. Specifically, the suction heads 41 and 42 are provided with a pipe so that negative pressure can be controlled individually, and the negative pressure region in the circumferential direction can also be individually controlled.
In this way, by providing the suction head 41 and the suction head 42 with different suction systems, it is possible to deliver a short object to each pitch changing device without error, and pressure fluctuation occurs when each short object is sucked and held. However, it can be transferred to the pitch changing device. This eliminates the wrinkles and creakings of short objects during transfer, and enables accurate transfer.

The transport device 6 in the present embodiment is a suction roll that rotates at a predetermined speed in the R4 direction in FIG. The suction roll 6 receives the short objects 21 and 22 from the first and second pitch changing devices 5A and 5B, respectively, on the peripheral surface thereof by sucking the internal air and holding it in a negative pressure state.
The short objects 22 received from the second pitch changing device 5B are arranged at predetermined intervals in the circumferential direction of the suction roll 6, and the short objects 21 received from the first pitch device 5B are respectively arranged in the circumferential direction of the suction roll 6. It arrange | positions so that it may straddle between the short objects 22 and 22 before and behind spaced apart. In other words, the interval between every other short object 21, 21 arranged on the suction roll 6 is arranged so as to be narrower than the width of the raw sheet 2. Thereby, the short object 21 and the short object 22 which adjoin each other will be in the state which mutual edge part 21a, 22a in the circumferential direction of the adsorption | suction roll 6 overlapped.

As shown in FIG. 1, the joining means 8 in the present embodiment is a heat-sealing seal roll disposed close to the peripheral surface portion of the suction roll 6. The seal roll 8 has a pressurizing part 81 having a large number of protrusions on the surface in a part of the circumferential direction thereof, and the short object 21 and the short object 22 are mutually connected while heating the pressurizing part 81. By pressurizing the end portions 21a and 22a that overlap each other, the short object 21 and / or the short object 22 can be melted and bonded to each other at a portion corresponding to the protrusion.
Bonding by the bonding means 8 is sequentially performed on the overlapping portion of the short object 21 and the short object 22 which are sequentially generated, whereby the short object 21 and the short object 22 are connected to form the belt-like sheet 7. it can.

Below, using the belt-shaped sheet re-forming apparatus 1, a belt-shaped sheet having a higher stretchability in the longitudinal direction than in the width direction is obtained from a belt-shaped original fabric sheet 2 having a higher stretchability in the width direction than in the longitudinal direction. A method for continuous production will be described.
From the above-described unwinding roll, the original fabric sheet 2 having higher stretchability in the width direction than in the longitudinal direction is unwound in a strip shape, and the unwound original sheet 2 is transferred to the above-described direction change roll 91 or the like. Are fed to the rotating drum 43 that regularly rotates in the direction of the arrow R, the original sheet 2 is conveyed to the position of the cutting means 3 while being sucked and held by the suction heads 41 and 42, By the cutter blade 31 of the cutting means 3, it is cut across the entire width in the width direction intermittently in the longitudinal direction and at each cutting location.

Then, the short objects 21 and 22 generated by the cutting are conveyed while being sucked and held by the suction heads 41 and 42, respectively, and the respective short objects 21 and 22 are rotated by the rotation of the suction heads 41 and 42 in the middle of the respective transports. Rotate 90 degrees around an axis P perpendicular to the 22 plane.
Then, the short objects 21 and 22 rotated 90 degrees have the pitch between the suction heads 41 and 42 directed in the circumferential direction of the rotary drum 43 when the longitudinal direction of the heads is viewed from the direction perpendicular to the upper surface of each head. Compared with the state where the suction heads 41 and 42 are rotated by 90 degrees, the width direction of the head when viewed from the direction perpendicular to the upper surface of each head is directed to the circumferential direction of the rotary drum 43. Shortened to narrow. Then, in a state where the pitch between the suction heads 41 and 42 is shortened, the short objects 21 and 21 conveyed to every other suction head 41 among the suction heads 41 and 42 arranged in the circumferential direction of the rotary drum 43. Is transferred to the first pitch changing device 5A, and the short objects 22, 22,... Conveyed to the remaining suction heads 42 among the suction heads 41, 42 arranged in the circumferential direction of the rotary drum 43 are Then, after being conveyed by the reversing device 4 for a longer distance than the first short object 22, it is delivered to the second pitch changing device 5B.

And the short objects 21, 21,... Delivered to the first pitch changing device 5A are narrowed by the pitch changing function of the first pitch changing device 5A, and the second pitch change is made. The short objects 22, 22... Delivered to the device 5B are narrowed in pitch between the short objects by the pitch changing function of the second pitch changing device 5B.
Then, the short objects 21 and 22 that are distributed and transported to the transport path transported by the first pitch change device 5A or the transport path transported by the second pitch change device 5B are respectively narrowed. They are collected on the same conveyance path, which is the peripheral surface of the suction roll 6. The short objects 21 and 22 collected on the peripheral surface of the suction roll 6 are disposed so that the end portions 21a and 22a of the adjacent short objects 21 and 22 overlap each other.

Then, the end portions 21a and 22a where the short object 21 and the short object 22 overlap are pressurized by the seal roll 8 as a joining means, whereby the short object 21 and the short object 22 are alternately connected. The sheet 7 is obtained.
The belt-like sheet 7 obtained in this way is used as the original fabric sheet 2, and the longitudinal direction of the original fabric sheet 2 having higher stretchability in the width direction than the longitudinal direction is the width direction, and the width direction is Since it is set as the longitudinal direction, the stretchability is higher in the longitudinal direction than in the width direction. The obtained sheet 7 is led out from the belt-shaped sheet reforming apparatus 1 to a next process which is an optional process by an appropriate means such as a guide roll (not shown) and a direction changing roll 92.

  According to the present invention, in this way, the property in the longitudinal direction and the property in the width direction are switched from the strip-shaped raw fabric sheet having different properties such as stretchability in the longitudinal direction and properties such as stretchability in the width direction. For example, by using a raw sheet having a preferable property only in the width direction or mainly in the width direction, for example, a belt-like sheet having the preferable property only in the longitudinal direction or mainly in the longitudinal direction. Can be manufactured efficiently.

  As an application example, an absorbent body including a liquid-permeable surface sheet and an absorbent core, and an outer package that is positioned on the non-skin contact surface side of the absorbent body and fixes the absorbent body When manufacturing a pants-type disposable diaper that is made with a cross-flow type pants-type diaper manufacturing machine, an original fabric sheet having stretchability only in the width direction, or an original fabric sheet having more stretchability in the width direction than in the longitudinal direction , Replacing the longitudinal direction and the width direction, and using as a forming material for the exterior body as a belt-like sheet having stretchability only in the longitudinal direction or a belt-like sheet having more stretchability in the longitudinal direction than in the width direction. Can do. In this case, in the manufactured disposable diaper, stretchability derived from the belt-like sheet appears in the diaper width direction (trunk circumference direction), so that a diaper with good fit is obtained. When the belt-like sheet is used as an exterior body, the belt-like sheet and the raw fabric sheet may be composed of a single layer of nonwoven fabric or the like, or a laminate in which two layers of nonwoven fabric are laminated and the layers are partially joined. A non-woven fabric or a sheet material having stretchability and a sheet material having stretchability but not stretchability are laminated and bonded, and the sheet may be stretchable as a whole.

  Examples of physical properties that can be exchanged between the original sheet and the re-formed belt-like sheet include dimensions in the longitudinal and width directions, extensibility, and surface smoothness in addition to stretchability. In the embodiment described above, the width-direction dimension of the re-formed belt-like sheet is increased as compared with the width-direction dimension of the original sheet, and thus, for example, the width of the original sheet is sufficient. By re-forming and using a non-exterior body in a belt-like sheet in which the longitudinal direction and the width direction are interchanged, it can be used for manufacturing an exterior body having a sufficient width. The width of the manufactured belt-like sheet can be set to a value exceeding 1.0 times the width of the original sheet, for example.

  The present invention is not limited to the above-described embodiment, and various modifications can be made. For example, the use of the manufactured belt-like sheet is not limited to the sheet constituting the exterior body of the pants-type disposable diaper, but the sanitary napkin, panty liner, incontinence pad as well as the forming material of each part of the pants-type and unfolded diapers It can be used as a material for forming various parts of an absorbent article other than diapers and the like, as well as a material for continuously producing various products such as clothes and bandages such as underwear. The method and apparatus of the present invention are preferably used by being incorporated into a manufacturing process of an article for continuously producing a large number of products.

  Moreover, the manufacturing method of the strip | belt-shaped sheet | seat of this invention is not limited to the apparatus used by the said embodiment shown in FIG. 1, It can implement using another various apparatus. Further, the means and apparatus constituting the belt-shaped sheet re-forming apparatus of the present invention can be variously modified. For example, as a cutting means for cutting the belt-shaped raw sheet, a laser cutter in addition to a cutter roll A water jet cutter, a cutter by fusing, or the like can be used. Moreover, instead of the suction roll in the above-described embodiment, a vacuum conveyor or the like can be used as a transport device that receives transport means and short objects that form the same transport path so that their ends overlap each other.

It is a side view explaining the principal part of the strip | belt-shaped sheet | seat reforming apparatus which concerns on one Embodiment of this invention. In the method for producing a belt-like sheet according to an embodiment of the present invention, a process for forming a short object from a belt-shaped raw sheet, rotating the short object by 90 degrees, and then re-forming the belt-like sheet, It is a top view which shows typically an anti-sheet, a short thing, and a strip | belt-shaped sheet | seat as a state seen from the direction orthogonal to those planes.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Strip-shaped sheet reforming device 2 Strip-shaped original sheet 3 Cutting roll (cutting means)
4 Reversing devices 41, 42 Suction heads 5A, 5B Pitch changing device 6 Suction roll (conveying means)
7 Strip sheet 8 Joining means

Claims (7)

The step of intermittently cutting the strip-shaped raw sheet that is continuously conveyed to sequentially generate short objects, and the respective short objects generated by the cutting are sucked and conveyed to the suction head , respectively, A step of rotating 90 degrees around an axis perpendicular to the plane, and the short object rotated by 90 degrees is delivered to another suction head and distributed to a plurality of transport paths. In each transport path, the other suction head a step of shortening respectively the pitch between short product adsorbed on the short product pitch is shortened, collected in the same transport path, a step of arranging so as to overlap the end portions of the short object, adjacent short product Joining the mutually overlapping end portions to obtain a belt-shaped sheet re-formed into a belt shape ,
The raw fabric sheet has a higher stretchability in the width direction than in the longitudinal direction, and the belt-shaped sheet re-formed in the strip shape has a higher stretchability in the longitudinal direction than in the width direction .   A plurality of suction heads capable of sucking and transporting the short objects generated by cutting, respectively, the step of rotating 90 degrees around an axis perpendicular to the plane of each short object while transporting the short objects, The manufacturing method of the strip | belt-shaped sheet | seat of Claim 1 performed using the inversion apparatus with a pitch change function which can change the pitch between the short objects conveyed by each suction head. The pitch of the short object you want to rotate. The 90 degrees, shortening prior to distribution to the plurality of the transport path, a manufacturing method of the belt-like sheet according to claim 1 or 2, wherein. The manufacturing method of the strip | belt-shaped sheet | seat in any one of Claims 1-3 used as a sheet | seat which comprises the exterior | packing material of a disposable diaper for the strip | belt-shaped sheet | seat reformed in the said strip | belt shape. A belt-shaped sheet re-forming apparatus used for carrying out the method for producing a belt-shaped sheet according to claim 1,
A cutting means that intermittently cuts the strip-shaped raw sheet that is continuously conveyed to sequentially generate short objects, and a plurality of suction heads, and the short objects generated by the cutting are sucked to the suction heads. A reversing device that rotates 90 degrees around an axis perpendicular to the plane of each short object while being transported, and the short objects that are rotated 90 degrees from different suction heads of the reversing device, respectively, and between the received short objects A plurality of pitch changing devices each shortening the pitch, and a conveying device that receives a short object with a shortened pitch from the plurality of pitch changing devices so that ends of the short objects overlap each other, and an adjacent short object overlapped. A belt-shaped sheet re-forming apparatus comprising bonding means for bonding the end portions to re-form the belt-shaped sheet. The reversing device comprises a suction head to pass short product to one pitch changing apparatus, in the suction head to pass short product to another pitch changing apparatus, the belt-like sheet reshaping apparatus suction system differs claim 5, wherein . 6. The belt-shaped sheet re-forming apparatus according to claim 5 , wherein the reversing device has a mechanism for shortening the pitch between the respective short objects before passing to the pitch changing device.

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