WO2017149609A1 - Procédé de production d'article absorbant, et dispositif de production - Google Patents

Procédé de production d'article absorbant, et dispositif de production Download PDF

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Publication number
WO2017149609A1
WO2017149609A1 PCT/JP2016/056097 JP2016056097W WO2017149609A1 WO 2017149609 A1 WO2017149609 A1 WO 2017149609A1 JP 2016056097 W JP2016056097 W JP 2016056097W WO 2017149609 A1 WO2017149609 A1 WO 2017149609A1
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WIPO (PCT)
Prior art keywords
splicing device
rotating shaft
coil
absorbent article
succeeding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2016/056097
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English (en)
Japanese (ja)
Inventor
宜秀 石川
浩亜希 多田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Unicharm Corp
Original Assignee
Unicharm Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Unicharm Corp filed Critical Unicharm Corp
Priority to CN201680082791.4A priority Critical patent/CN108697543B/zh
Priority to JP2016557350A priority patent/JP6051349B1/ja
Priority to PCT/JP2016/056097 priority patent/WO2017149609A1/fr
Publication of WO2017149609A1 publication Critical patent/WO2017149609A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators

Definitions

  • the present invention relates to a method for manufacturing absorbent articles such as disposable diapers and a manufacturing apparatus.
  • various materials 3 'related to the diaper are carried in the form of a material coil 3C' wound in a coil shape.
  • the material splicing device 20 ′ is connected to the material coil 3Cf ′ that has not been fed out. By joining the material 3f ′, the material 3 ′ is continuously supplied to the processing apparatus of the production line without interruption.
  • the material splicing device 20 ′ has two rotating shafts 24 a ′ (24 ′) and 24 f ′ (24 ′) that can be driven and rotated while supporting the material coil 3 ⁇ / b> C ′.
  • the material 3a is fed out as the preceding material 3a from the material coil 3Ca, and when the material 3a ′ of the material coil 3Ca ′ is likely to disappear, the other rotary shaft
  • the material 3f ′ of the new material coil 3Cf ′ supported by 24f ′ is joined as the subsequent material 3f ′.
  • the first type material splicing device 20 ′ if the worker attaches the material coil 3Cf ′ that is not advanced to the rotating shaft 24f ′ as a preparatory work for joining, the subsequent joining processing is performed by the device 20 'Performs almost automatically. Therefore, the workload of the worker is small. However, there is a problem that the material splicing device 20 ′ is expensive. On the other hand, the second type material splicing device 60 'is inexpensive. However, in the apparatus 60 ′, as a preparatory work for joining, the operator not only attaches the unsuccessful material coil on the rotating shaft 64f ′, but also attaches the material 3f ′ from the material coil 3Cf ′ on the subsequent line. There is a problem that it is necessary to pull out and set the tip 3fe ′ of the material 3f ′ to the predetermined member 67K ′ for joining, which is troublesome.
  • the material 3 ′ having a large number of attachments is made to correspond to the above-described second type material splicing device 60 ′, the preparatory work for joining is the first type material splicing device 20 ′. As a result, the workload of the operator may increase significantly.
  • the present invention has been made in view of the conventional problems as described above, and its purpose is to suppress the increase in equipment cost due to the installation of the material splicing device, while reducing the work load of the operator. It is to make it possible to suppress the increase.
  • the main invention for achieving the above object is: A method of manufacturing an absorbent article using a first material and a second material,
  • the first material splicing device joins the first material of the succeeding first material coil to the first material of the succeeding material as the first material of the succeeding material to the preceding first material that is continuously drawn out from the preceding first material coil. Supplying the succeeding first material continuously to the preceding first material;
  • the second material splicing device joins the second material of the subsequent second material coil as the second material of the subsequent material to the second material of the subsequent material that is continuously drawn out from the preceding second material coil.
  • the first material splicing device supports the preceding first material fed out from the preceding first material coil supported by one of the first rotating shafts that is driven to rotate, and the following first material coil.
  • the first material of the succeeding first material is joined to the first material of the preceding by pressing toward the outer peripheral surface of the first material coil of the succeeding first rotating by the driving rotation operation of the other first rotating shaft,
  • the second material splicing device performs a feeding operation of one second rotating shaft that supports the preceding second material coil and a feeding operation of the other second rotating shaft that supports the succeeding second material coil.
  • the succeeding second material is joined to the preceding second material
  • the number of attachments per unit time of the first material coil to the one first rotating shaft and the other first rotating shaft related to the first material splicing device is the one of the one related to the second material splicing device.
  • the absorbent article manufacturing method is characterized in that the number of attachments per unit time of the second material coil to the second rotating shaft and the other second rotating shaft is greater.
  • An apparatus for manufacturing an absorbent article using a first material and a second material By joining the first material of the succeeding first material coil as the first material of the succeeding first material that is continuously fed out from the first material coil, it is made continuous with the preceding first material.
  • a second material splicing device for supplying the second material following the A generator that generates the absorbent article based on the first material supplied from the first material splicing device and the second material supplied from the second material splicing device;
  • the first material splicing device supports the preceding first material fed out from the preceding first material coil supported by one of the first rotating shafts that is driven to rotate, and the following first material coil.
  • the second material splicing device performs a feeding operation of one second rotating shaft that supports the preceding second material coil and a feeding operation of the other second rotating shaft that supports the succeeding second material coil.
  • the number of attachments per unit time of the first material coil to the one first rotating shaft and the other first rotating shaft related to the first material splicing device is the one of the one related to the second material splicing device.
  • the absorbent article manufacturing apparatus is characterized in that the number of attachments per unit time of the second material coil to the second rotating shaft and the other second rotating shaft is greater.
  • the present invention it is possible to suppress an increase in a worker's work load while suppressing an increase in equipment cost due to the installation of the material splicing device.
  • FIG. 1A is a schematic side view of an example of a first type material splicing device 20 ′
  • FIG. 1B is a schematic side view of an example of a second type material splicing device 60 ′.
  • FIG. 2A is a schematic plan view showing an example of a disposable diaper 1s as an absorbent article
  • FIG. 2B is a cross-sectional view taken along line BB in FIG. 2A.
  • FIG. 3A is a schematic side view of the production line LM for the disposable diaper 1s
  • FIG. 3B is a schematic plan view of the line LM indicated by arrows BB in FIG. 3A.
  • FIG. 4 is a schematic explanatory view of a first type material supply apparatus 10 that supplies the material 3 of the backsheet 3s, and is a view taken along arrows IV-IV in FIG. 3B.
  • FIG. 4B is a schematic plan view taken along line BB in FIG. 4A. It is a schematic side view which expands and shows the principal part in FIG. 4A.
  • FIG. 4 is a schematic explanatory diagram of a second type material supply device 50 that supplies the material 4 of the leak-proof sheet 4s, and is a view taken along arrows VI-VI in FIG. 3B.
  • 7A to 7C are enlarged views of the VII portion in FIG. It is a schematic side view for demonstrating operation
  • FIG. 3B It is a schematic enlarged view of the IX part in FIG. 3B. It is a schematic side view which shows the positional relationship of the up-down direction between the 1st type material splicing apparatus 20 and the 2nd type material splicing apparatus 60.
  • FIG. It is a schematic side view of the 2nd type material splicing apparatus 60 which concerns on other embodiment. It is a figure equivalent to the IX section in Drawing 3B for explaining plane arrangement of the 2nd type material splicing device 60 concerning other embodiments.
  • a method of manufacturing an absorbent article using a first material and a second material joins the first material of the succeeding first material coil to the first material of the succeeding material as the first material of the succeeding material to the preceding first material that is continuously drawn out from the preceding first material coil. Supplying the succeeding first material continuously to the preceding first material;
  • the second material splicing device joins the second material of the subsequent second material coil as the second material of the subsequent material to the second material of the subsequent material that is continuously drawn out from the preceding second material coil.
  • the first material splicing device supports the preceding first material fed out from the preceding first material coil supported by one of the first rotating shafts that is driven to rotate, and the following first material coil.
  • the first material of the succeeding first material is joined to the first material of the preceding by pressing toward the outer peripheral surface of the first material coil of the succeeding first rotating by the driving rotation operation of the other first rotating shaft,
  • the second material splicing device performs a feeding operation of one second rotating shaft that supports the preceding second material coil and a feeding operation of the other second rotating shaft that supports the succeeding second material coil.
  • the number of attachments per unit time of the first material coil to the one first rotating shaft and the other first rotating shaft related to the first material splicing device is the one of the one related to the second material splicing device.
  • the absorbent article manufacturing method is characterized in that the number of attachments per unit time of the second material coil to the second rotating shaft and the other second rotating shaft is greater.
  • the second material splicing device which has a large work load on the operator but is inexpensive, is made to correspond to the second material coil with a small number of attachments per unit time, and the work load is small.
  • the expensive first material splicing device is made to correspond to the first material coil having a large number of attachments per unit time. Therefore, it is possible to suppress an increase in the work load of the operator while suppressing an increase in equipment cost due to the installation of the material splicing device.
  • a method of manufacturing such an absorbent article The feeding length of the second material fed out by the second material splicing device for the production of one absorbent article is fed out by the first material splicing device for the production of one absorbent article. It is desirable that it is shorter than the feeding length of the first material.
  • the feeding length of the second material for the production of one absorbent article is shorter than the feeding length of the first material. Therefore, the number of attachments of the second material coil per unit time in the second material splicing device can be surely reduced as compared with the number of attachments of the first material coil per unit time in the first material splicing device.
  • a method of manufacturing such an absorbent article A first processing device that processes the first material conveyed from the first material splicing device;
  • the first support member that supports the first rotating shaft of the first material splicing device is preferably a member that is separate from the support member that supports the first processing device.
  • the first support member and the support member of the first processing apparatus are separate members, layout restrictions that may occur when the same support member is also used. Can be relaxed. That is, when the same supporting member is also used, the feeding direction of the first material in the first material splicing device and the conveying direction of the first material in the first processing device intersect in plan view. Although it becomes difficult to arrange, if the first support member is separate from the support member of the first processing apparatus as described above, it can be easily performed.
  • a method of manufacturing such an absorbent article A first processing device that processes the first material conveyed from the first material splicing device; In the first material splicing device, the first material is fed out in a plan view with a first direction as a feeding direction, and in the first processing device, the first material is conveyed in a second direction intersecting the first direction in a plan view. Conveyed as direction, A conveyance direction changing member is provided between the first material splicing device and the first processing device to change the conveyance direction of the first material in plan view from the first direction to the second direction.
  • the first material splicing device has a turret capable of turning about a turning axis parallel to the first rotation axis, and the turret has the one first rotation axis at a position symmetrical with respect to the turning axis.
  • the other first rotating shaft is rotatably supported;
  • the one first rotating shaft and the other first rotating shaft are movable at two positions set in the turning direction of the turret by the turning operation of the turret,
  • a second processing device that processes the second material conveyed from the second material splicing device;
  • the second material is fed with the first direction as the feeding direction in a plan view, and in the second processing device, the second direction is conveyed with the second direction as a feeding direction in a plan view,
  • a conveyance direction changing member is provided between the second material splicing device and the second processing device to change the conveyance direction of the second material in plan view from the first direction to the second direction.
  • the one second rotating shaft and the other second rotating shaft of the second material splicing device are arranged in a fixed position side by side in the first direction, It is desirable that the turning shaft of the turret of the first material splicing device is located between the one second rotating shaft and the other second rotating shaft in the first direction.
  • the turning shaft of the turret of the first material splicing device is configured so that the second rotation shaft of one of the second material splicing devices and the other second rotation shaft of the second material splicing device are in the first direction. Located between. Therefore, the protrusion amount of the first material splicing device from the second material splicing device in the first direction can be suppressed, and as a result, the size of the manufacturing line for performing this manufacturing method can be reduced in the first direction. And thereby, a worker's flow line can be shortened and the work load can be reduced.
  • a method of manufacturing such an absorbent article A first processing device that processes the first material conveyed from the first material splicing device; In the first material splicing device, the first material is fed out in a plan view with a first direction as a feeding direction, and in the first processing device, the first material is conveyed in a second direction intersecting the first direction in a plan view. Conveyed as direction, A conveyance direction changing member is provided between the first material splicing device and the first processing device to change the conveyance direction of the first material in plan view from the first direction to the second direction.
  • the first material splicing device has a turret capable of turning about a turning axis parallel to the first rotation axis, and the turret has the one first rotation axis at a position symmetrical with respect to the turning axis.
  • the other first rotating shaft is rotatably supported;
  • the one first rotating shaft and the other first rotating shaft are movable at two positions set in the turning direction of the turret by the turning operation of the turret, One of the two positions is farther from the first processing device in the first direction than the other position.
  • a method of manufacturing such an absorbent article A second processing device that processes the second material conveyed from the second material splicing device;
  • the second material is fed with the first direction as the feeding direction in a plan view
  • the second direction is conveyed with the second direction as a feeding direction in a plan view
  • a conveyance direction changing member is provided between the second material splicing device and the second processing device to change the conveyance direction of the second material in plan view from the first direction to the second direction.
  • the one second rotation shaft and the other second rotation shaft of the second material splicing device are arranged in a fixed position side by side in the first direction, and the one second rotation shaft Is farther from the second processing device in the first direction than the other second rotation axis,
  • the one of the first material splicing devices is within a range of the first direction in which the second material coil exists. It is desirable that the first rotating shaft located at the position of is included.
  • a new first material coil is attached to the first rotating shaft at the one position of the first material splicing device.
  • the first rotation shaft located at is included in the existence range of the second material coil in the undrawn state supported by the one rotation shaft of the second material splicing device in the first direction. Therefore, the operator can move the position of the one rotation shaft of the second material splicing device and the one position of the first material splicing device with a relatively short flow line, As a result, the attachment work of the first material coil to the first rotation shaft and the attachment work of the second material coil to the second rotation shaft can be efficiently performed.
  • a method of manufacturing such an absorbent article A second processing device that processes the second material conveyed from the second material splicing device;
  • the second material is fed with the first direction as the feeding direction in a plan view
  • the second direction is conveyed with the second direction as a feeding direction in a plan view
  • a conveyance direction changing member is provided between the second material splicing device and the second processing device to change the conveyance direction of the second material in plan view from the first direction to the second direction.
  • the one second rotating shaft and the other second rotating shaft of the second material splicing device are arranged in a fixed position side by side in the first direction, When the one first rotating shaft is located at the one position of the first material splicing device, the first rotating shaft is connected to the one second rotating shaft of the second material splicing device in the vertical direction and It is desirable to be located above the other second rotation axis.
  • a new first material coil is attached to the first rotating shaft from which the preceding material has been delivered.
  • the vertical position of the first rotating shaft is located above the second rotating shaft of the second material splicing device. Therefore, it is easy to visually confirm the state of the first rotating shaft with a large number of attachments even from a distance, and this makes it possible to quickly remove this if the forgetting to attach a new first material coil to the first rotating shaft. Can be found in.
  • a method of manufacturing such an absorbent article A first processing device that processes the first material conveyed from the first material splicing device; In the first material splicing device, the first material is fed out in a plan view with a first direction as a feeding direction, and in the first processing device, the first material is conveyed in a second direction intersecting the first direction in a plan view. Conveyed as direction, A conveyance direction changing member is provided between the first material splicing device and the first processing device to change the conveyance direction of the first material in plan view from the first direction to the second direction.
  • the first material splicing device has a turret capable of turning about a turning axis parallel to the first rotation axis, and the turret has the one first rotation axis at a position symmetrical with respect to the turning axis.
  • the other first rotating shaft is rotatably supported;
  • the one first rotating shaft and the other first rotating shaft are movable at two positions set in the turning direction of the turret by the turning operation of the turret,
  • a second processing device that processes the second material conveyed from the second material splicing device;
  • the second material is fed with the first direction as the feeding direction in a plan view, and in the second processing device, the second direction is conveyed with the second direction as a feeding direction in a plan view,
  • a conveyance direction changing member is provided between the second material splicing device and the second processing device to change the conveyance direction of the second material in plan view from the first direction to the second direction.
  • the one second rotating shaft and the other second rotating shaft of the second material splicing device are respectively disposed at fixed positions in the first direction, The first direction of the turning trajectory drawn by the first material coil when the turret turns around the turning axis in a state in which the first material coil that has not been fed out is supported by the one first rotating shaft. It is desirable that the one second rotating shaft and the other second rotating shaft of the second material splicing device are included in the range of.
  • the first material splicing device has a first trajectory in the first direction of the turning trajectory drawn by the first material coil in the undrawn state when the turret of the first material splicing device turns around the turning axis.
  • the one second rotating shaft and the other second rotating shaft of the two-material splicing device are included. Therefore, the protrusion amount of the second material splicing device in the first direction from the first material splicing device can be suppressed, and as a result, the size of the manufacturing line for performing this manufacturing method can be reduced in the first direction. And thereby, a worker's flow line can be shortened and the work load can be reduced.
  • the first material is a pulp air laid nonwoven fabric, It is desirable to cut and produce the absorbent body according to the absorbent article from the pulp air laid nonwoven fabric.
  • the pulp air laid nonwoven fabric is generally thick, the number of attachments of the material coil per unit time is increased.
  • the pulp air laid nonwoven fabric is a first material joint having a small work load on the operator. Supplied by the device. Therefore, it is possible to effectively suppress an increase in work load due to a large number of attachments.
  • An apparatus for manufacturing an absorbent article using a first material and a second material By joining the first material of the succeeding first material coil as the first material of the succeeding first material that is continuously fed out from the first material coil, it is made continuous with the preceding first material.
  • a second material splicing device for supplying the second material following the A generator that generates the absorbent article based on the first material supplied from the first material splicing device and the second material supplied from the second material splicing device;
  • the first material splicing device supports the preceding first material fed out from the preceding first material coil supported by one of the first rotating shafts that is driven to rotate, and the following first material coil.
  • the second material splicing device performs a feeding operation of one second rotating shaft that supports the preceding second material coil and a feeding operation of the other second rotating shaft that supports the succeeding second material coil.
  • the number of attachments per unit time of the first material coil to the one first rotating shaft and the other first rotating shaft related to the first material splicing device is the one of the one related to the second material splicing device.
  • the absorbent article manufacturing apparatus is characterized in that the number of attachments per unit time of the second material coil to the second rotating shaft and the other second rotating shaft is greater.
  • the manufacturing method and manufacturing apparatus for absorbent articles according to the present embodiment are used in a manufacturing line LM for disposable diapers 1s. That is, in this embodiment, the disposable diaper 1s is manufactured as an example of an absorbent article based on the manufacturing method and the manufacturing apparatus.
  • FIG. 2A is a schematic plan view showing an example of a disposable diaper 1s.
  • FIG. 2B is a cross-sectional view taken along the line BB in FIG. 2A.
  • the diaper 1s includes an absorbent body 1k that absorbs excrement such as urine, a liquid-permeable top sheet 2s disposed on the skin side of the absorbent body 1k, and a back disposed on the non-skin side of the absorbent body 1k.
  • the top sheet 2s and the back sheet 3s have substantially the same hourglass shape in plan view, and the leakage preventing sheet 4s has the dimensions in the longitudinal direction and the width direction of the diaper 1s. It is made into the substantially rectangular shape in planar view of the dimension smaller than that of the sheet
  • the top sheet 2s and the back sheet 3s are made of non-woven fabrics containing thermoplastic resin fibers such as polyethylene and polypropylene as materials 2 and 3, and the leak-proof sheet 4s is made of a thermoplastic resin film such as polyethylene. Is material 4.
  • FIG. 3A is a schematic side view of the production line LM for the diaper 1s
  • FIG. 3B is a schematic plan view of the line LM indicated by arrows BB in FIG. 3A.
  • any material 2, 3, 4 of the top sheet 2s, the back sheet 3s, and the leak-proof sheet 4s is brought into the production line LM by the continuous sheets 2, 3, 4 as materials. It is made in the form of material coils 2C, 3C, 4C which are wound around a paper tube p (FIG. 4A) in a coil shape.
  • the various material coils 2C, 3C, and 4C are mounted on the material supply devices 10, 10, and 50 provided in the production line LM for each type of the materials 2, 3, and 4, respectively. , 4 are fed out.
  • Each material 2, 3 and 4 is subjected to processing such as pressing and cutting by various processing devices 110, 110 (corresponding to the generation device) while being transported along a predetermined transport path in the production line LM.
  • the material is polymerized with other materials 2, 3, 4 and other members such as the absorbent body 1k to finally produce the disposable diaper 1s.
  • Examples of the processing apparatus 110 include a fiber stacking apparatus 110a, a cutting apparatus 110b, a pressing apparatus 110c, a leg hole cutting apparatus 110d, an end cutting apparatus 110e, and the like.
  • each apparatus 110a, 110b ... has the following functions, for example.
  • the fiber stacking device 110a generates an absorbent body 1k using, for example, liquid absorbent fibers such as pulp fibers as a main material.
  • the cutting device 110b (corresponding to the first processing device and the second processing device) cuts the material 4 sent from the material coil 4C of the leak-proof sheet 4s into a single sheet to generate the leak-proof sheet 4s, and the conveyance direction Each of the leak-proof sheets 4s, 4s,... Is conveyed with a space between the leak-proof sheets 4s, 4s adjacent to each other. And each leak-proof sheet
  • a known slip cutting device for example, Japanese Patent Application Laid-Open No. 2011-083547
  • the pressing device 110c presses the materials 2, 3 and the like with a pair of upper and lower rolls.
  • the material 2 sent from the material coil 2C of the top sheet 2s is placed on the upper surface of the pressing device 110c, while the absorber 1k is placed on the upper surface, and further from above, the above-described leakage-proof sheet 4s. Is transported in a state where the materials 3 of the back sheet 3s joined together are overlapped. Therefore, the press device 110c presses and integrates these materials 2, 3 and the like in the thickness direction, thereby generating the base material 1 of the diaper 1s.
  • Leg hole cut device 110d (corresponding to the first processing device) has a cutter roll as an upper roll and an anvil roll as a lower roll. And the leg periphery opening part is formed in the base material 1 passing the said base material 1 sent from the press apparatus 110c between both rolls.
  • the end cut device 110e (corresponding to the first processing device) has a cutter roll as an upper roll and an anvil roll as a lower roll. And the diaper 1s is cut
  • X direction three directions orthogonal to each other in the production line LM are referred to as an X direction, a Y direction, and a Z direction, respectively.
  • the X direction and the Y direction are each oriented in the horizontal direction, but as shown in FIG. 3A, the Z direction is oriented in the vertical direction.
  • the X direction and the Y direction are orthogonal to each other.
  • the X direction corresponds to the “second direction” according to the claims
  • the Y direction corresponds to the “first direction” according to the claims.
  • each processing apparatus 110a, 110b,... is arranged side by side along the X direction. Therefore, basically, in each processing apparatus 110a, 110b ..., each material 2, 3, and 4 are each conveyed along the X direction by planar view.
  • the material supply devices 10, 10, 50 are respectively processed by the processing devices 110a, 110b,. Is located at a position shifted in the Y direction. Therefore, the supply of the materials 2, 3, 4 from the material supply devices 10, 10, 50 to the processing devices 110a, 110b... Is mainly performed along the Y direction. That is, after the materials 2, 3, and 4 fed out along the Y direction in the material supply devices 10, 10, and 50 are transported along the Y direction, the transport direction is changed in the X direction by a turn bar TB described later. Thus, the materials 2, 3, and 4 are supplied to the processing apparatuses 110a, 110b,.
  • each material supply device 10, 10, 50 has a material splicing device 20, 20, 60, respectively.
  • each material splicing device 20,20,60 is respectively with respect to the material 2a, 3a, 4a before the preceding material 2a, 3a, 4a being extended
  • the materials 2f, 3f, 4f of the other material coils 2Cf, 3Cf, 4Cf that have not been fed out are joined as the subsequent materials 2f, 3f, 4f, thereby leading to the processing devices 110b, 110c,.
  • the materials 2 (2a, 2f), 3 (3a, 3f), and 4 (4a, 4f) are continuously supplied without interruption.
  • the material splicing devices 20, 60 there are two types of the material splicing devices 20, 60. That is, in the first type (FIG. 4A), the rotation of the feeding rotary shaft 24 that supports the preceding material coil 3Ca and the feeding rotary shaft 24 that supports the subsequent material coil 3Cf is stopped without stopping the rotation. The succeeding material 3f is joined to the preceding material 3a. On the other hand, in the second type (FIG. 6), the rotation of both the feeding rotary shaft 64 that supports the preceding material coil 4Ca and the feeding rotary shaft 64 that supports the following material coil 4Cf is stopped. The succeeding material 4f is joined to the preceding material 4a.
  • the material supply device 10 (hereinafter referred to as the first type material) having the first type material splicing device 20, respectively. Also referred to as supply device 10).
  • a material supply device 50 having a second type material splicing device 60 (hereinafter also referred to as a second type material supply device 50) is used for the material 4 of the leak-proof sheet 4s.
  • FIG. 4A and 4B are schematic explanatory views of the material supply apparatus 10 that supplies the material 3 of the backsheet 3s.
  • 4A is a view taken along the arrow IV-IV in FIG. 3B
  • FIG. 4B is a schematic plan view taken along the line BB in FIG. 4A.
  • FIG. 5 is an enlarged schematic side view showing the main part in FIG. 4A. 4A, FIG. 4B, and FIG. 5 are shown with members omitted as appropriate for the purpose of preventing the complication of the drawings.
  • the basic configuration of the material supply apparatus 10 that supplies the material 2 of the top sheet 2s is generally the same as that of the material supply apparatus 10 according to the material 3 of the back sheet 3s. Therefore, the description is omitted.
  • the material supply device 10 has a first type material splicing device 20 (corresponding to a first material splicing device). And this material splicing device 20 is applied to the material 3a before there is no preceding material 3a (corresponding to the preceding first material) being fed out from the material coil 3Ca (corresponding to the preceding first material coil). The material 3f of another material coil 3Cf (corresponding to the following first material coil) in the undrawn state is joined as the succeeding material 3f (corresponding to the following first material), thereby producing the production line. The material 3 (3a, 3f) is continuously supplied to the LM processing apparatus 110 without interruption.
  • a storage device 40 for storing the material 3 (3a, 3f) sent from the material splicing device 20 in the form of a loop 3L is provided at a position downstream of the material splicing device 20 in the transport direction. . And thereby, the tension
  • a turn bar TB is provided as a transport direction changing member on the downstream side of the storage device 40 in the transport direction. Then, the conveyance direction of the material 3 is changed from the Y direction to the X direction by the turn bar TB, and as a result, the material 3 is sent to the processing apparatus 110 with the conveyance direction changed to the X direction.
  • the first-type material splicing device 20 includes a plate-like support member 21 (corresponding to the first support member) erected on the floor LMB of the production line LM, and the X direction.
  • a strip-shaped turret 22 supported by the support member 21 so as to be able to turn around a turning axis C22 along the rotation axis, and two feeding rotary shafts 24 provided at both ends in the longitudinal direction of the turret 22 along the X direction.
  • a servo motor (not shown) that drives and rotates the turret 22, each servo motor (not shown) that drives and rotates the two feeding rotary shafts 24 and 24, and one feeding rotary shaft 24 (one The preceding material 3a being fed out on the outer peripheral surface 3Cfs of the succeeding material coil 3Cf supported by the other feeding rotating shaft 24 (corresponding to the other first rotating shaft).
  • Push Only has a press mechanism 26 for bonding the materials 3f of the rear row, the cutter mechanism 28 to separate the material 3a at the same time prior and after the said joining or bonding the paper tube p of the preceding material coil 3Ca, a.
  • the servo motors and the mechanisms 24, 26, and 28 are controlled by a controller (not shown) such as a computer or a sequencer included in the production line LM.
  • the two feeding rotary shafts 24, 24 are provided point-symmetrically with respect to the turning axis C22 of the turret 22. Therefore, by turning the turret 22 around the turning axis C22, the positions of each other can be switched. Further, both of the feeding rotating shafts 24 and 24 can be supported by being inserted into the central paper tube p of the material coil 3C. In the state where the insertion is supported, the feeding rotary shaft 24 is driven to rotate, so that the material 3 is fed out from the material coil 3C along the Y direction in plan view.
  • the two feeding rotary shafts 24, 24 basically perform this feeding operation alternately. That is, while the one feeding rotary shaft 24 feeds the material 3a from the material coil 3Ca, the other feeding rotary shaft 24 is in a standby state which is a non-feeding state. If the material 3a of one of the feeding rotary shafts 24 is almost gone, the material 3a is set as the preceding material 3a, and the material of the uncoiled material coil 3Cf attached to the other feeding rotary shaft 24 is used. These materials 3a and 3f are joined by using 3f as a subsequent material 3f. Therefore, thereafter, the other feeding rotating shaft 24 feeds and supplies the material 3f from the succeeding material coil 3Cf.
  • the material 3f of the other feeding rotary shaft 24 is almost gone, this time, the material 3f is set as the preceding material and the unpaid newly attached to the one feeding rotary shaft 24 is used.
  • the same processing as described above is repeated with the material coil 3Cn in the state as the subsequent material coil.
  • a succeeding material coil 3Cf that is in an undrawn state during the joining process is positioned in the turning direction of the turret 22.
  • a power succeeding material coil position P3Cf and a preceding material coil position P3Ca where the preceding material coil 3Ca in the extended state during the joining process should be positioned are set.
  • the former succeeding material coil position P3Cf and the latter preceding material coil position P3Ca are set on both sides in the Y direction, and the height in the vertical direction (Z direction) is the same height. There is no limitation to this.
  • the feeding rotary shaft 24 rotates counterclockwise, so that the material coils 3Ca and 3Cf feed the materials 3a and 3f from below. Therefore, a conveyance path for the material 3a fed out from the preceding material coil 3Ca is set below the subsequent material coil 3Cf located at the subsequent material coil position P3Cf, and further below this conveyance path.
  • the press mechanism 26 and the cutter mechanism 28 are arranged.
  • the press mechanism 26 is supported so as to be able to swing around a rotation axis C26A along the X direction, and to be supported around a rotation axis C26R along the X direction at the swing end portion of the arm member 26A.
  • a press roll 26R, and an actuator 26C such as an air cylinder that drives the arm member 26A. Then, based on the swinging motion of the arm member 26A, the press roll 26R presses the preceding material 3a against the material 3f on the outer peripheral surface 3Cfs of the succeeding material coil 3Cf from below, thereby causing the preceding material 3a and the following material 3a to follow.
  • the material 3f is joined at a predetermined joining position Pj (FIG. 5).
  • this press roll 26R it is good also as a driven roll which obtains a rotational force by the contact with the material 3, and rotates, or obtains a driving rotational force from drive sources, such as a servomotor, as a driving roll which carries out a driving rotation. Also good.
  • the rotational speed (rpm) is controlled based on a command value (mpm) described later.
  • the cutter mechanism 28 includes an arm member 28A supported so as to be swingable about a rotation axis C28A along the X direction, and a cutter fixed to the swing end of the arm member 28A. It has a blade 28B and an actuator 28C such as an air cylinder that drives the arm member 28A. Then, based on the swinging motion of the arm member 28A, the cutter blade 28B at the standby position Pw28B approaches and contacts the preceding material 3a from below, so that the preceding material 3a is brought into contact with the aforementioned joining position Pj. Cutting is performed at a position between (FIG. 5) and the feeding rotary shaft 24 at the preceding material coil position P3Ca (FIG. 4A) (FIG. 5). As a result, the preceding material 3 a joined to the succeeding material 3 f is separated from the paper tube p of the feeding rotating shaft 24.
  • an actuator 28C such as an air cylinder that drives the arm member 28A.
  • the double-faced tape 7j is already provided on the surface of the tip 3fe of the material 3f located on the outer peripheral surface 3Cfs of the succeeding material coil 3Cf.
  • a double-sided tape 7k for temporary fixing is provided on the back surface of the tip portion 3fe so that the tip portion 3fe is not separated from the material coil 3Cf.
  • the feeding speed value (mpm) of the preceding material 3a becomes the above command value.
  • the controller controls the number of revolutions (rpm) of the feeding rotary shaft 24, the feed shaft is conveyed along the Y direction. That is, the rotation of the feeding rotary shaft 24 is controlled with the rotation speed (rpm) at which the feed speed value (mpm) becomes the command value.
  • the controller determines that the remaining amount of the material 3a of the preceding material coil 3Ca is equal to or less than the specified value, the controller starts the joining process. That is, the rotational speed (rpm) of the feeding rotary shaft 24 that supports the subsequent material coil 3Cf is reduced to a command rotational speed (rpm) at which the peripheral speed value (mpm) of the material coil 3Cf becomes the command value. To accelerate.
  • the controller determines that the rotation speed has reached the command rotation speed and determines that the tip 3fe has reached the position immediately before the press roll 26R of the press mechanism 26, the controller performs the press roll 26R.
  • the above-mentioned actuator 26C is moved so that the roll 26R at the standby position Pw26R moves toward the outer peripheral surface 3Cfs of the succeeding material coil 3Cf, and the preceding material 3a is moved. Press against the outer peripheral surface 3Cfs of the subsequent material coil 3Cf. During this pressing, the leading end 3fe of the succeeding material coil 3Cf passes through the position of the press roll 26R, so that the leading end 3fe is preceded by the double-sided tape 7j for joining. The material 3a is joined. Then, the controller controls the actuator 26C to move the press roll 26R to the standby position Pw26R in a direction away from the subsequent material coil 3Cf, and also controls the cutter mechanism 28 as shown in FIG.
  • the preceding material 3a is cut, whereby the preceding material 3a is separated from the paper tube p.
  • the succeeding material 3f is joined to the preceding material 3a without stopping the feeding operation. That is, the rotation of the rotating shaft 24 for supporting the preceding material coil 3Ca and the rotating shaft 24 for supporting the succeeding material coil 3Cf is stopped without stopping the rotation of the preceding material coil 3C.
  • the material 3f is joined.
  • the controller decelerates the rotational speed of the feeding rotary shaft 24 at the preceding material coil position P3Ca in FIG. 4A and stops the rotation of the rotary shaft 24. Then, the operator removes the paper tube p of the preceding material 3a from the feeding rotary shaft 24 at the same position P3Ca, and inserts and attaches a new material coil 3Cn that has not been fed to the rotary shaft 24. Further, the double-sided tape 7j for bonding described above is provided on the surface of the tip 3ne of the material 3n located on the outer peripheral surface 3Cns of the new material coil 3Cn, and the double-sided tape 7k for temporary fixing is provided on the back surface. Is provided.
  • the controller determines that the conditions for turning the turret 22 are satisfied, that is, the outer diameter of the succeeding material coil 3Cf located at the succeeding material coil position P3Cf is reduced by the feeding, and the coil 3Cf is manufactured.
  • the controller determines that the turret 22 can turn without interference with the floor LMB of the line LM, the press roll 26R at the standby position Pw26R, the cutter blade 28B at the standby position Pw28B, etc.
  • the controller turns the servo motor of the turret 22 on. Control and turn the turret 22 clockwise. As a result, the succeeding material coil 3Cf is moved downward along the circular arc trajectory and then moved upward.
  • the material coil 3Cf is moved to the preceding material coil position P3Ca, and the above-mentioned undrawn
  • the new material coil 3Cn in the state is moved to the subsequent material coil position P3Cf. Then, when the timing of the next joining process comes, the controller repeats the above joining process.
  • the storage device 40 is a device that stores the preceding material 3a or the succeeding material 3f fed out from the material splicing device 20 in the form of a loop 3L so that it can be sent to the turn bar TB. Then, by adjusting the size of the loop 3L, the tension fluctuation of the material 3 is absorbed and suppressed, and the material 3 in which the tension fluctuation is suppressed is sent to the turn bar TB.
  • the storage device 40 having such a function is guided so as to reciprocate in a predetermined direction (substantially Y direction) in which the size of the loop 3L can be changed, and a pair of fixed position rolls 41u and 41d supported rotatably at a fixed position.
  • a single moving roll 41m, and an arm member 41A supported so as to be swingable about a rotation axis C41A along the X direction so as to guide the moving roll 41m so as to be reciprocally movable in the predetermined direction.
  • Each of the rolls 41u, 41m, and 41d is supported so as to be rotatable around the rotation axes C41u, C41m, and C41d along the X direction.
  • the material 3 includes the rolls 41u, 41u, 41d in the order of the fixed position roll 41u, the moving roll 41m, and the fixed position roll 41d located on the upstream side in the transport direction of the pair of fixed position rolls 41u, 41d.
  • the loop 3L of the material 3 is formed by being hung around 41m and 41d.
  • a predetermined load (N) is applied to the moving roll 41m from the actuator 41C such as an air cylinder via the arm member 41A in the direction of increasing the loop 3L. Therefore, when the tension (N) of the material 3 is smaller than a predetermined value based on the predetermined load, the moving roll 41m moves so that the loop 3L becomes large, but the tension (N) of the material 3 is the predetermined value.
  • the moving roll 41m moves so that the loop 3L becomes smaller.
  • the size of the loop 3L is measured by an appropriate sensor (not shown) such as a linear encoder or a rotary encoder, and this measurement signal is transmitted to the controller. Therefore, the controller corrects the command rotational speed (rpm) of the feeding rotary shafts 24 and 24 of the material splicing device 20 based on this measurement signal so that the size of the loop 3L becomes constant, and the result The tension fluctuation of the material 3 is suppressed.
  • various correction methods can be used for the above-described correction processing of the command rotational speed.
  • the following process may be repeated at a predetermined control cycle.
  • the actual value of the size of the current loop 3L is obtained based on the measurement signal of the sensor, and the deviation amount is obtained by subtracting the target value of the size of the loop 3L from the actual value.
  • the control amount is calculated by multiplying the deviation amount by a predetermined control gain, and the control amount is subtracted from the above-mentioned designated rotation speed (rpm), and the subtraction value is fed out as a corrected command rotation speed.
  • the servo motor of the rotary shaft 24 is controlled.
  • the correction process is performed not only on the feeding rotary shaft 24 that feeds the preceding material 3a, but also at least the following material 3f on the feeding rotary shaft 24 that feeds the succeeding material 3f. Is performed after the joining to the preceding material 3a (for example, after joining), preferably from immediately before joining or from the start of the rotational operation of the rotary shaft 24. As a result, it is possible to reliably suppress later-described tension fluctuation from the first turn (first turn) of the outer periphery of the subsequent material coil 3Cf.
  • the turn bar TB changes the conveyance direction of the material 3 sent from the storage device 40 from the Y direction to the X direction, and sends the material 3 to the processing device 110.
  • a round bar having a predetermined diameter such as a stainless steel polishing bar is used. That is, as shown in FIG. 4B, the longitudinal direction of the round bar TB is arranged so as to be immovable and non-rotatable while facing the same angle of 45 ° from both the X and Y directions. Yes. Therefore, when the material 3 is wound around the turn bar TB, the conveyance direction of the material 3 is changed by 90 ° from the Y direction to the X direction.
  • FIG. 6 is a schematic explanatory diagram of the material supply device 50 that supplies the material 4 of the leak-proof sheet 4s. 6 is a view taken in the direction of arrows VI-VI in FIG. 3B. 7A to 7C are enlarged views of the VII portion in FIG. In FIGS. 6 and 7A to 7C, members are appropriately omitted for the purpose of preventing complication of the drawings.
  • the material supply device 50 has a second type material splicing device 60 (corresponding to a second material splicing device). That is, in this material splicing device 60, first, before there is no preceding material 4a (corresponding to the preceding second material) being fed out from the preceding material coil 4Ca (corresponding to the preceding second material coil), the same material The rotation of one feeding rotary shaft 64 that supports the coil 4Ca is stopped. Then, the material 4f of the succeeding material coil 4Cf (corresponding to the second material coil of the succeeding material) that has not been fed and supported by the other feeding rotating shaft 64 in the rotation stopped state is replaced with the material 4f of the succeeding material (the rear material 4f).
  • this material splicing device 60 first, before there is no preceding material 4a (corresponding to the preceding second material) being fed out from the preceding material coil 4Ca (corresponding to the preceding second material coil), the same material The rotation of one feeding rotary shaft 64 that supports the coil 4Ca is stopped. Then, the material 4
  • a storage device 90 for storing the material 4 (4a, 4f) sent from the material splicing device 60 in the form of a loop 4L is provided at a position downstream of the material splicing device 60 in the transport direction. .
  • the material 4 can be continuously supplied to the processing device 110 even when the material 4 is not sent from the material splicing device 60 as described above.
  • a turn bar TB is provided as a transport direction changing member on the downstream side of the storage device 90 in the transport direction. Then, the conveyance direction of the material 4 is changed from the Y direction to the X direction by the turn bar TB. As a result, the material 4 is sent to the processing apparatus 110 in a state where the conveyance direction is changed to the X direction.
  • each configuration 60, 90, TB related to the second type material supply apparatus 50 will be described.
  • the turn bar TB has the same structure as described above, the description thereof is omitted.
  • the second type material splicing device 60 includes a plate-like support member 61 erected on the floor LMB of the production line LM, and two X-direction members that are rotatably supported at a fixed position in the support member 61.
  • a joining mechanism 66 The servo motors and the mechanisms 64 and 66 are controlled by the above-described controller of the production line LM.
  • the two feeding rotary shafts 64 and 64 are arranged at fixed positions side by side in the Y direction.
  • the positions of the two feeding rotation shafts 64, 64 in the vertical direction (Z direction) are the same.
  • both of the feeding rotating shafts 64 and 64 can be supported by being inserted into the central paper tube p of the material coil 4C. Therefore, in the state where the insertion is supported, the feeding rotary shaft 64 is driven to rotate, thereby feeding the material 4 from the material coil 4C along the Y direction in plan view.
  • the two feeding rotary shafts 64 and 64 basically perform this feeding operation alternately. That is, while the one feeding rotary shaft 64 feeds the material 4a from the material coil 4Ca, the other feeding rotary shaft 64 is in a standby state that is a non-feeding state. When the material 4a of one of the feeding rotating shafts 64 is almost gone, the material of the uncooked material coil 4Cf attached to the other feeding rotating shaft 64 while using the material 4a as the preceding material 4a. These materials 4a and 4f are joined by using 4f as the subsequent material 4f. Therefore, thereafter, the other feeding rotary shaft 64 feeds and supplies the material 4f from the succeeding material coil 4Cf.
  • the joining mechanism 66 is a mechanism 66 that joins the material 4f of the succeeding material coil 4Cf that is supported by the other feeding rotary shaft 64 to the preceding material 4a fed by the one feeding rotary shaft 64. is there. Thus, the material 4 (4a, 4f) is continuously supplied to the processing apparatus 110 without interruption.
  • the joining mechanism 66 includes a pressing mechanism 67 and a cutter mechanism 68.
  • the pressing mechanism 67 includes a pair of pressing members 67K and 67K guided by a reciprocating movement in a predetermined direction (for example, the Y direction) in which the size of the gap G between them can be changed, and a pair of pressing members 67K in the predetermined direction.
  • a predetermined direction for example, the Y direction
  • actuators 67C, 67C such as air cylinders that reciprocate.
  • the cutter mechanism 68 includes a cutter blade 68B that cuts the preceding material 4a and separates the material 4a from the paper tube p, and an actuator 68C such as an air cylinder that moves the cutter blade 68B forward and backward relative to the preceding material 4a.
  • an actuator 68C such as an air cylinder that moves the cutter blade 68B forward and backward relative to the preceding material 4a.
  • the joining process is performed as follows. First, the operator pulls the distal end portion 4fe of the material 4f from the subsequent material coil 4Cf supported by the feeding rotation shaft 64 in the rotation stopped state, and pushes the distal end portion 4fe into the pressing mechanism 67 as shown in FIG. 7A.
  • the pair of pressing members 67K and 67K are positioned in the gap G.
  • the tip portion 4fe is brought into contact with and supported by the pressing member 67K by suction of the pressing member 67K located on the material 4f side of the succeeding member of the pair of pressing members 67K and 67K.
  • the tip 4fe is already provided with a double-sided tape 7j for joining with the preceding material 4a.
  • a transport path for the preceding material 4a fed out from the preceding material coil 4Ca is located, and the preceding material 4a is transported along the same path.
  • the controller determines that the remaining amount of the material 4a of the preceding material coil 4Ca has become equal to or less than the specified value
  • the controller stops the rotation of the feeding rotary shaft 64 that supports the preceding material coil 4Ca, and this During the stop, as shown in FIG. 7B, the controller brings the pair of pressing members 67K and 67K closer to each other, whereby the preceding material 4a, the double-sided tape 7j and the following material are moved by the pair of pressing members 67K and 67K. Clamp the three with 4f.
  • the controller controls the cutter mechanism 68 to move the preceding material 4a with the cutter blade 68B between the pair of pressing members 67K, 67K and the feeding rotary shaft 64.
  • the material 4a is separated from the paper tube p of the feeding rotary shaft 64.
  • the controller separates the pair of pressing members 67K and 67K from each other, thereby releasing the clamped state of the three parties 4a, 7j, and 4f. If it does so, a controller will start rotation of the rotating shaft 64 for feeding which supports the material coil 4Cf of a succeeding. Then, the feeding of the material 4 is switched from the preceding material coil 4Ca to the succeeding material coil 4Cf.
  • the paper tube p of the preceding material coil 4Ca that has been fed out shown in FIG. 8 is detached from the feeding rotary shaft 64 by the operator. And until the next joining process, an operator inserts and attaches the new material coil 4Cn of the undrawn state to the rotating shaft 64 for same feeding. The new material coil 4Cn becomes the subsequent material coil 4Cf in the next joining process.
  • the storage device 90 stores the material 4 (4a, 4f) fed from the feeding rotary shafts 64, 64 in the form of a loop 4L so as to be supplied downstream in the transport direction.
  • the accumulator 90 reciprocates in a predetermined direction (Z direction) in which the size of the material loop 4L can be changed, and a fixed position roll group G95s composed of a plurality of fixed position rolls 95s, 95s.
  • a movable roll group G95m composed of a plurality of movable rolls 95m, 95m, and the like, and an actuator 95C such as an air cylinder that applies a predetermined load (N) in the direction of increasing the loop 4L to the movable roll group G95m; ,have.
  • Each of the rolls 95s and 95m is supported so as to be rotatable around a rotation axis along the X direction. Further, the material 4 is alternately wound around the fixed position rolls 95s belonging to the fixed position roll group G95s and the movable rolls 95m belonging to the movable roll group G95m, whereby the loops 4L, 4L,. A plurality of are formed. Further, as described above, a predetermined load (N) is applied to the moving roll group G95m from the actuator 95C in the direction of increasing the loop 4L.
  • the moving roll group G95m moves so that the loop 4L becomes large, but the tension (N) of the material 4 is the predetermined value.
  • the moving roll group G95m moves so that the loop 4L becomes smaller.
  • the material 4 is also sent from the material splicing device 60 located upstream of the preceding material 4a during the joining process of joining the succeeding material 4f. Even if not, the storage device 90 pays out the material 4 previously stored in the form of the loop 4L to the processing device 110, so that the processing device 110 stops or decelerates the conveyance of the material 4 The material 4 can be processed without having to do.
  • the moving roll group G95m moves in the direction in which the loop 4L becomes smaller based on the above, and as a result, the accumulating device 90 stores the accumulated material 4 (4a) is supplied to the processing apparatus 110.
  • the supply operation of the material 4 (4a) from the storage device 90 is continued at least until the above-described joining process is completed. However, as shown in FIG.
  • the controller sets the feeding speed value of the feeding rotating shaft 64 to the supply speed value V4 (required from the processing apparatus 110 side).
  • the rotational speed (rpm) of the feeding rotary shaft 64 is accelerated to a command rotational speed (rpm) that becomes a command value of mpm).
  • the controller determines that the rotational speed has reached the command rotational speed (rpm)
  • the controller controls the rotation of the feeding rotary shaft 64 based on the command rotational speed.
  • the controller accumulates the subsequent material 4f fed from the feeding rotating shaft 64 in the accumulating device 90 by enlarging the loop 4L of the accumulating device 90 so as to be in time for at least the next joining process. For example, the controller makes the feeding speed value (mpm) of the feeding rotating shaft 64 larger than the command value of the supply speed value V4 (mpm) requested from the processing apparatus 110 side. Then, the tension of the material 4 becomes smaller than the predetermined value, and as a result, the loop 4L becomes larger from the solid line state in FIG. 8 to the two-dot chain line state.
  • the controller determines that the loop 4L is based on the command rotational speed (rpm) corresponding to the command value of the supply speed value V4 (mpm).
  • the rotation of the feeding rotary shaft 64 is controlled.
  • the second type material splicing device 60 in the second type material splicing device 60, the work of pulling out the material 4f to the pressing member 67K as shown in FIG. 7A is necessary, and the preparation work for joining is more complicated than that of the first type material splicing device 20. . Therefore, the second type material splicing device 60 is in charge of the material coil 4C of the leak-proof sheet 4s with a small number of attachments, thereby suppressing an increase in the work load of the operator.
  • the number of times of attaching the material coil 4C of the leak-proof sheet 4s (times / h) is less than the number of times of attaching the material coil 3C of the back sheet 3s (times / h).
  • the two points contribute.
  • the feeding length LGH4 of the material 4 of the leak-proof sheet 4s fed out by the second type material splicing device 20 for the production of one diaper 1s is one diaper. It is shorter than the feeding length LGH3 of the material 3 of the back sheet 3s fed out by the first type material splicing device 60 for the generation of 1s. That is, as shown in FIG. 2A, in this example, the longitudinal direction of the diaper 1s is along the feeding direction of the materials 3 and 4, but here, when comparing the longitudinal length of the diaper 1s, The length LGH4 of the leak-proof sheet 4s is shorter than the length LGH3 of the back sheet 3s.
  • the consumption lengths LGH3 and LGH4 of the materials 3 and 4 consumed from the material coils 3C and 4C per unit time are smaller in the material 4 of the leak-proof sheet 4s than in the material 3 of the back sheet 3s.
  • this contributes to a reduction in the number of attachments (times / h) of the material coil 4C of the leak-proof sheet 4s.
  • the realization of making the feeding length LGH4 of the material 4 of the leak-proof sheet 4s as described above shorter than the feeding length LGH3 of the material 3 of the backsheet 3s is, for example, from the processing device 110 side of the first type.
  • the thickness of the material 4 of the leak-proof sheet 4s since the leak-proof sheet 4s is a film and the back sheet 3s is a non-woven fabric, the thickness of the material 4 of the leak-proof sheet 4s.
  • the thickness (average thickness) and the thickness (average thickness) of the material 3 of the back sheet 3s are compared in the state of the material coils 4C and 3C, the thickness of the material 3 of the former leak-proof sheet 4s However, it is smaller than the thickness of the material 3 of the latter backsheet 3s.
  • the outer diameter of the material coils 4C, 3C has an allowable upper limit from the viewpoint of loading and transporting with a truck or the like.
  • the smaller thickness is taken up to the same outer diameter.
  • the winding length of becomes longer. Therefore, the small thickness of the material 4 of the leak-proof sheet 4s as described above also contributes to a reduction in the number of attachments (times / h).
  • the requirements for making a difference in the number of attachments between the materials 3 and 4 are not limited to the above. That is, there may be a difference in the number of attachments (times / h) due to other requirements.
  • the absorbent body 1k is generated by molding pulp fibers with the fiber stacking apparatus 110a, but this is not a limitation.
  • the cutter 1 (not shown) may cut and produce the absorbent body 1k from a so-called pulp air laid nonwoven fabric (nonwoven fabric mainly composed of pulp fibers).
  • the material of the pulp air laid nonwoven fabric is also brought into the production line LM in the form of a material coil.
  • the thickness of the pulp air laid nonwoven fabric is generally large, the consumption time of the material coil is shortened, and therefore the number of times of attachment of the material coil per unit time (times / h) is increased.
  • the first type material supply device 10 for the material coil of the pulp air laid nonwoven fabric.
  • the thickness (average thickness) of the pulp air-laid nonwoven fabric in the state of the material coil is usually set to the materials 2 and 3 of the top sheet 2s and the back sheet 3s in the state of the material coils 2C and 3C. It becomes thicker than the thickness (average thickness). Therefore, the number of times (times / h) of attaching the material coil 2C of the top sheet 2s and the material coil 3C of the back sheet 3s is less than the number of times (times / h) of attaching the material coil of the pulp air laid nonwoven fabric.
  • the second-type material supply device 50 may be used for the material coils 2C and 3C of the top sheet 2s and the back sheet 3s.
  • each processing apparatus 110a, 110b... Of the production line LM is supported by an end plate LMK (corresponding to a support member) of the production line LM.
  • the end plate LMK is a metal plate member such as iron standing on the floor LMB of the production line LM so as to support the processing apparatuses 110a, 110b. That is, the end plate LMK extends in the vertical direction (Z direction) and the X direction, and the end plate LMK has a substantially vertical front side surface LMKS1 on one side in the Y direction and is substantially vertical on the other side. A rear side LMKS2 is provided.
  • the first-type and second-type material splicing devices 20 and 60 are arranged at positions on the front side of the front side surface LMKS1 of the end plate LMK in the Y direction.
  • the dedicated support members 21 and 61 first support members described above that are erected on the floor LMB of the production line LM separately from the end plate LMK. 4A, FIG. 4B, and FIG. 6) are arranged along the Y direction, so that the two feeding rotary shafts 24, 24, 64, Reference numerals 64 are respectively supported by the support members 21 and 61 (corresponding to the first support member).
  • each material splicing device 20, 60 can be easily arranged at a position shifted in the Y direction from the arrangement position of the processing devices 110a, 110b, and as a result, the X direction of the manufacturing line LM as described above. It is possible to easily make the overall length of the compact.
  • the first type material splicing device 20 that feeds out the material 3 of the back sheet 3 s is arranged in the preceding material coil position P3Ca in the turning direction of the turret 22.
  • the preceding material coil position P3Ca is a cutting device 110b which is the processing device 110b with respect to the Y direction with respect to the succeeding material coil position P3Cf. It is far from.
  • the feeding rotary shaft 24 is positioned at the preceding material coil position P3Ca, the operator attaches a new material coil 3Cn that has not been fed to the feeding rotary shaft 24. Therefore, the attachment work can be performed at a safe position away from the processing apparatus 110b.
  • FIG. 9 shows a schematic enlarged view of the IX portion in FIG. 3B.
  • one and the other rotations of the second type material splicing device 60 for feeding out the material 4 of the leak-proof sheet 4s.
  • the shafts 64 and 64 and the turning axis C22 of the turret 22 of the first type material splicing device 20 are compared with respect to the position in the Y direction, the position of the swiveling axis C22 is the second type material splicing device 60. Is located in a range R64 between the one feeding rotation shaft 64 and the other feeding rotation shaft 64.
  • the amount of protrusion in the Y direction from the second type material splicing device 60 of the first type material splicing device 20 can be suppressed, and as a result, the size of the production line LM can be reduced in the Y direction. .
  • the flow line of the worker can be shortened in the Y direction, and the work load can be reduced.
  • the feeding rotary shaft 64 far from the cutting device 110 b as the processing device 110 b has not been fed out.
  • the feeding rotary shaft 24 located at the preceding material coil position P3Ca of the first type material splicing device 20 in the range R4Cn in the Y direction where the material coil 4Cn exists. It is included. Then, as described above, at the preceding material coil position P3Ca, the work of attaching the material coil 3Cn that has not been fed to the feeding rotary shaft 24 is performed as described above.
  • the operator moves the movement between the position of the feeding rotary shaft 64 of the second type material splicing device 60 and the preceding material coil position P3Ca of the first type material splicing device 20 with a relatively short movement.
  • the new material coil 3Cn can be attached to the feeding rotary shaft 24 at the preceding material coil position P3Ca and the above-described feeding rotation of the second type material splicing device 60 can be performed.
  • the attachment work of the new material coil 4Cn to the shaft 64 can be performed efficiently.
  • the first type of R-type range R64a in the Y direction in which the far-away feeding rotary shaft 64 of the second type material splicing device 60 exists is included. It is preferable that at least a part of the feeding rotary shaft 24 located at the preceding material coil position PCa of the material splicing device 20 is accommodated.
  • FIG. 10 shows the vertical positional relationship between the first type material splicing device 20 and the second type material splicing device 60.
  • the first type material splicing device 20 is shown.
  • the feeding rotary shaft 24 is connected to one feeding rotary shaft 64 and the other feeding shaft of the second type material splicing device 60 in the vertical direction. It is located above the rotating shaft 64.
  • the so-called unfolded disposable diaper 1s is illustrated as an example of the absorbent article, but the present invention is not limited thereto.
  • a pants-type disposable diaper may be used.
  • a liquid-absorbent absorbent main body (a sheet-like member having an absorbent body 1k therein) is stretched between the ventral belt member and the back belt member in the unfolded state.
  • a so-called three-piece type diaper may be used, or a so-called two-piece type diaper in which an absorbent main body is placed on the skin side surface of an approximately hourglass-shaped exterior sheet in the unfolded state.
  • the absorbent article is not limited to the disposable diaper 1 described above, but may be any article that absorbs the excretion fluid of the wearer.
  • the absorbent article may be a sanitary napkin or a urine picking pad.
  • the production line LM has two first-type material supply devices 10 and 10 and one second-type material supply device 50.
  • the number of each is not limited to this. That is, one or three or more first-type material supply devices 10 may be provided, and two or more second-type material supply devices 50 may be provided.
  • the first type material splicing device 20 and the second type material splicing device 60 follow the preceding materials 3a and 4a with the double-sided tape 7j, respectively.
  • the present invention is not limited to this.
  • they may be joined by welding such as heat sealing or ultrasonic sealing, or may be joined by a joining method other than these.
  • the press mechanism 26 of the first type material splicing device 20 has the press roll 26R, but the present invention is not limited to this.
  • the press roll 26R instead of the press roll 26R, a configuration having a pair of rolls and an endless belt wound around the pair of rolls may be used.
  • the preceding material 3a is pressed against the material 3f on the outer peripheral surface 3Cfs of the succeeding material coil 3Cf on the outer peripheral surface of the endless belt based on the driving of the actuator 26C.
  • the pair of rolls may both be driven rolls, or at least one of the rolls may be a drive roll.
  • the material coil 2C of the top sheet 2s and the material coil 3C of the back sheet 3s are illustrated as the first material coil
  • the material coil 4C of the leak-proof sheet 4s is illustrated as the second material coil.
  • other material coils may be carried into the production line LM and used for the production of the disposable diaper 1s.
  • a material of a three-dimensional gather sheet for forming a so-called three-dimensional gather may be carried into the production line LM in the form of a material coil, or a material for forming an illustration sheet having a pattern may be used in the form of a material coil. May be carried into the production line LM.
  • a material of a three-dimensional gather sheet for forming a so-called three-dimensional gather may be carried into the production line LM in the form of a material coil
  • a material for forming an illustration sheet having a pattern may be used in the form of a material coil. May be carried into the production line LM.
  • the first type material splicing device 20 has the storage device 40, but this is not a limitation. That is, in the first type, the storage device 40 is not an essential configuration, that is, the device 40 may not be included.
  • the two feeding rotary shafts 64 and 64 of the second material splicing device 60 are arranged side by side in the Y direction, but this is not a limitation.
  • the two feeding rotary shafts 64 and 64 may be arranged in a fixed position side by side in the vertical direction.
  • FIG. 11B is a schematic plan view showing this preferable positional relationship, and corresponds to the IX portion in FIG. 3B. That is, as shown in FIG.
  • the turret 22 is at least around the turning axis C22 in a state in which the unrolled material coil 3Cn is supported by one first rotating shaft 24 of the first type material splicing device 60.
  • the two second rotating shafts 64 and 64 of the second type material splicing device 60 are included in the range R3Cn in the Y direction of the turning trajectory drawn by the material coil 3Cn when turning only one rotation. desirable. And if it becomes like this, the protrusion amount of the Y direction from the 1st type material splicing apparatus 20 of the 2nd type material splicing apparatus 60 can be suppressed, Thereby, this manufacturing line LM The size can be reduced in the Y direction.
  • the flow line of the worker can be shortened, and the work load can be reduced.
  • the positions in the Y direction of the two feeding rotary shafts 64 and 64 are completely coincident with each other, but the present invention is not limited to this. That is, the positions of the two feeding rotary shafts 64 and 64 may be shifted from each other in the Y direction.

Landscapes

  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Abstract

La présente invention concerne un procédé de production d'article absorbant qui est pourvu d'une étape dans laquelle des articles absorbants (1s) sont générés sur la base d'un premier matériau (3) fourni par un premier dispositif d'épissage de matériau (20), et un deuxième matériau (4) fourni par un deuxième dispositif d'épissage de matériau (50). Le nombre de fois que des spires du premier matériau sont attachées à un premier arbre rotatif et un autre premier arbre rotatif du premier dispositif d'épissage de matériau par unité de temps est supérieur au nombre de fois que des spires du deuxième matériau sont attachées à un deuxième arbre rotatif et à un autre deuxième arbre rotatif du deuxième dispositif d'épissage de matériau par unité de temps.
PCT/JP2016/056097 2016-02-29 2016-02-29 Procédé de production d'article absorbant, et dispositif de production Ceased WO2017149609A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201680082791.4A CN108697543B (zh) 2016-02-29 2016-02-29 用于制造吸收性物品的方法及设备
JP2016557350A JP6051349B1 (ja) 2016-02-29 2016-02-29 吸収性物品の製造方法、及び製造装置
PCT/JP2016/056097 WO2017149609A1 (fr) 2016-02-29 2016-02-29 Procédé de production d'article absorbant, et dispositif de production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2016/056097 WO2017149609A1 (fr) 2016-02-29 2016-02-29 Procédé de production d'article absorbant, et dispositif de production

Publications (1)

Publication Number Publication Date
WO2017149609A1 true WO2017149609A1 (fr) 2017-09-08

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CN (1) CN108697543B (fr)
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019136151A (ja) * 2018-02-06 2019-08-22 王子ホールディングス株式会社 Ｓａｐシートの製造方法、ｓａｐシート、吸収性物品の製造方法、及び吸収性物品

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007097903A (ja) * 2005-10-05 2007-04-19 Kao Corp 使い捨ておむつの製造方法
JP2008044755A (ja) * 2006-08-18 2008-02-28 Nippon Reliance Kk 長尺物制御装置及び方法
US20100320302A1 (en) * 2009-06-23 2010-12-23 Catbridge Machinery, Llc In-Line Formed Core Supporting a Wound Web
JP2013521927A (ja) * 2010-03-18 2013-06-13 エスセーアー・ハイジーン・プロダクツ・アーベー 糞便を保持するためのラミネート材料からなるウェブを製造するための方法ならびに吸収性物品を製造するための方法
JP2014031239A (ja) * 2012-08-02 2014-02-20 Sinko Kikai Co Ltd ロール径演算装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6540170B2 (en) * 2001-07-23 2003-04-01 Illinois Tool Works Inc. Multiple coil dispenser
JP2003327354A (ja) * 2002-05-10 2003-11-19 Zuiko Corp ウエブの継ぎ方法および継ぎ装置
JP4316414B2 (ja) * 2004-04-13 2009-08-19 大王製紙株式会社 スプライス装置及びスプライス方法
JP2008105808A (ja) * 2006-10-25 2008-05-08 Mitsubishi Heavy Ind Ltd 印刷機および給紙装置による紙継ぎ方法
JP2011116513A (ja) * 2009-12-04 2011-06-16 Unicharm Corp 帯状物供給装置及びその作動方法
US9566193B2 (en) * 2011-02-25 2017-02-14 Curt G. Joa, Inc. Methods and apparatus for forming disposable products at high speeds with small machine footprint
JP6001359B2 (ja) * 2012-07-05 2016-10-05 ユニ・チャーム株式会社 資材継ぎ装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007097903A (ja) * 2005-10-05 2007-04-19 Kao Corp 使い捨ておむつの製造方法
JP2008044755A (ja) * 2006-08-18 2008-02-28 Nippon Reliance Kk 長尺物制御装置及び方法
US20100320302A1 (en) * 2009-06-23 2010-12-23 Catbridge Machinery, Llc In-Line Formed Core Supporting a Wound Web
JP2013521927A (ja) * 2010-03-18 2013-06-13 エスセーアー・ハイジーン・プロダクツ・アーベー 糞便を保持するためのラミネート材料からなるウェブを製造するための方法ならびに吸収性物品を製造するための方法
JP2014031239A (ja) * 2012-08-02 2014-02-20 Sinko Kikai Co Ltd ロール径演算装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019136151A (ja) * 2018-02-06 2019-08-22 王子ホールディングス株式会社 Ｓａｐシートの製造方法、ｓａｐシート、吸収性物品の製造方法、及び吸収性物品
JP7102759B2 (ja) 2018-02-06 2022-07-20 王子ホールディングス株式会社 Ｓａｐシートの製造方法、ｓａｐシート、吸収性物品の製造方法、及び吸収性物品

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JP6051349B1 (ja) 2016-12-27
CN108697543B (zh) 2020-04-21
CN108697543A (zh) 2018-10-23
JPWO2017149609A1 (ja) 2018-03-08

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