WO2017168496A1 - 吸収性物品の包装体の製造方法、及び製造装置 - Google Patents
吸収性物品の包装体の製造方法、及び製造装置 Download PDFInfo
- Publication number
- WO2017168496A1 WO2017168496A1 PCT/JP2016/059830 JP2016059830W WO2017168496A1 WO 2017168496 A1 WO2017168496 A1 WO 2017168496A1 JP 2016059830 W JP2016059830 W JP 2016059830W WO 2017168496 A1 WO2017168496 A1 WO 2017168496A1
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- WIPO (PCT)
- Prior art keywords
- continuous sheet
- pitch
- package
- absorbent article
- sheet
- Prior art date
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Classifications
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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
- A61F13/551—Packaging before or after use
- A61F13/5513—Packaging before or after use packaging of feminine sanitary napkins
- A61F13/55135—Packaging before or after use packaging of feminine sanitary napkins before use
- A61F13/5514—Packaging before or after use packaging of feminine sanitary napkins before use each item packaged single
-
- 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
-
- 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
- A61F13/15577—Apparatus or processes for manufacturing
-
- 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
- A61F13/15577—Apparatus or processes for manufacturing
- A61F13/15772—Control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B41/00—Supplying or feeding container-forming sheets or wrapping material
- B65B41/12—Feeding webs from rolls
- B65B41/16—Feeding webs from rolls by rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B57/00—Automatic control, checking, warning, or safety devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
- B65H23/188—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web
- B65H23/1882—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web and controlling longitudinal register of web
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
- B65H23/188—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web
- B65H23/1888—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web and controlling web tension
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
- B65H29/24—Delivering or advancing articles from machines; Advancing articles to or into piles by air blast or suction apparatus
- B65H29/241—Suction devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
- B65H35/04—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/30—Orientation, displacement, position of the handled material
- B65H2301/33—Modifying, selecting, changing orientation
- B65H2301/332—Turning, overturning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/30—Orientation, displacement, position of the handled material
- B65H2301/34—Modifying, selecting, changing direction of displacement
- B65H2301/342—Modifying, selecting, changing direction of displacement with change of plane of displacement
- B65H2301/3422—Modifying, selecting, changing direction of displacement with change of plane of displacement by travelling a path section in arc of circle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2406/00—Means using fluid
- B65H2406/30—Suction means
- B65H2406/34—Suction grippers
- B65H2406/344—Suction grippers circulating in closed loop
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2406/00—Means using fluid
- B65H2406/30—Suction means
- B65H2406/34—Suction grippers
- B65H2406/345—Rotary suction grippers
- B65H2406/3454—Rotary suction grippers performing oscillating movement during rotation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
- B65H2511/10—Size; Dimensions
- B65H2511/17—Deformation, e.g. stretching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
- B65H2511/20—Location in space
- B65H2511/22—Distance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
- B65H2511/50—Occurence
- B65H2511/51—Presence
- B65H2511/512—Marks, e.g. invisible to the human eye; Patterns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2513/00—Dynamic entities; Timing aspects
- B65H2513/10—Speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2553/00—Sensing or detecting means
- B65H2553/40—Sensing or detecting means using optical, e.g. photographic, elements
- B65H2553/42—Cameras
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2801/00—Application field
- B65H2801/57—Diaper manufacture
Definitions
- the present invention relates to a method for manufacturing a package of absorbent articles such as sanitary napkins and a manufacturing apparatus.
- a sanitary napkin as an example of an absorbent article is provided on the market in the form of a package individually wrapped in a packaging sheet.
- the packaging sheet is generally printed with an illustration, a product name, a pattern such as a pattern. And such a package is produced
- the napkin is transported side by side at a product pitch in the transport direction by an appropriate transport device such as a conveyor.
- a continuous sheet of packaging sheets is also transported in the transport direction by an appropriate transport device such as a transport roller.
- symbols are printed side by side in the transport direction at a print pitch smaller than the product pitch. ing. Therefore, when the napkin is arranged on the continuous sheet, the continuous sheet is extended by the difference between the product pitch and the printing pitch, and the position of the design of the continuous sheet and the position of the napkin are thereby determined. To match.
- both end portions in the width direction of the same sheet are folded inward to form a tri-fold state, and in the same tri-fold state, a pair of sealing portions And the sheet is cut at a position between the pair of sealing portions, thereby generating a package.
- the above extended state can vary over time due to various factors. And when it fluctuates, it becomes difficult to arrange the napkin at an appropriate position on the continuous sheet determined by the positional relationship with the symbol. And if the arrangement position of an absorbent article shifts
- the present invention has been made in view of the conventional problems as described above, and its purpose is to make it possible to place an absorbent article at an appropriate position of a continuous sheet of a packaging sheet, and to provide a package with good appearance. It is to enable manufacture.
- the main invention for achieving the above object is: A method for producing a package in which an absorbent article is packaged by a packaging sheet, A first conveying step of conveying a plurality of the absorbent articles at a first pitch; A second conveying step of conveying the continuous sheet of the packaging sheet in the conveying direction to a joining position with the absorbent article; Joining the absorbent article to the continuous sheet at the joining position,
- display elements are arranged in the transport direction at a center interval smaller than the first pitch in a non-extended state
- the second conveying step includes The information on the amount of deviation of the size of the center interval of the display element from the first pitch is acquired, and the extension state adjusting device is in the extension state of the continuous sheet based on the information of the amount of deviation of the size of the center interval
- Elongating state adjusting step for adjusting Information on the amount of positional deviation of the display element from the reference position based on the first pitch on the continuous sheet is acquired, and the continuous sheet is moved toward the merging position based on the information on
- An apparatus for producing a package in which an absorbent article is packaged by a packaging sheet A first transport device for transporting a plurality of the absorbent articles at a first pitch; A second transport device for transporting the continuous sheet of the packaging sheet to the joining position with the absorbent article in the transport direction; A joining device for joining the absorbent article to the continuous sheet at the joining position, In the continuous sheet, display elements are arranged in the transport direction at a center interval smaller than the first pitch in a non-extended state, The second transport device is A stretched state in which information on a shift amount of the center interval of the display element from the first pitch is acquired, and a stretch state of the continuous sheet is adjusted based on the information on the shift amount of the center interval.
- An adjustment device Information on the amount of positional deviation of the display element from the reference position based on the first pitch on the continuous sheet is acquired, and the continuous sheet is moved toward the merging position based on the information on the amount of positional deviation.
- An apparatus for manufacturing a package of absorbent articles comprising: a delivery device that adjusts a conveyance speed value at the time of delivery.
- the absorbent article can be arranged at an appropriate position of the continuous sheet of the packaging sheet, and a packaging body having a good appearance can be manufactured.
- FIG. 1A is a schematic plan view of a sanitary napkin 1 as an example of an absorbent article
- FIG. 1B is a cross-sectional view taken along line BB in FIG. 1A
- 2A is a schematic perspective view of the napkin 1 placed on the packaging sheet 7
- FIG. 2B is a schematic plan view of a package 7p in which the napkin 1 is packaged by the packaging sheet 7
- FIG. 3B is a schematic plan view of the package 7p viewed from the opposite side of FIG. 2B.
- It is a schematic plan view which shows the production
- FIG. It is a schematic side view of the production line LM of the package 7p of the napkin 1.
- a method for producing a package in which an absorbent article is packaged by a packaging sheet A first conveying step of conveying a plurality of the absorbent articles at a first pitch; A second conveying step of conveying the continuous sheet of the packaging sheet in the conveying direction to a joining position with the absorbent article; Joining the absorbent article to the continuous sheet at the joining position,
- display elements are arranged in the transport direction at a center interval smaller than the first pitch in a non-extended state
- the second conveying step includes The information on the amount of deviation of the size of the center interval of the display element from the first pitch is acquired, and the extension state adjusting device is in the extension state of the continuous sheet based on the information of the amount of deviation of the size of the center interval
- Elongating state adjusting step for adjusting Information on the amount of positional deviation of the display element from the reference position based on the first pitch on the continuous sheet is acquired, and the continuous sheet is moved toward the
- the position of the display element in the conveyance direction is the above reference.
- the position of the display element can be adjusted to align with the position.
- the center interval is set to the first pitch which is the conveyance pitch of the absorbent article.
- an absorbent article can be arrange
- an absorbent article is joined to the continuous sheet. Therefore, even when appropriate processing is subsequently performed on the continuous sheet, the position of the absorbent article is maintained at an appropriate position on the continuous sheet. This also contributes to the production of a good-looking package.
- a method for producing a package of such an absorbent article When the continuous sheet passes through a position downstream of the joining position in the conveying direction, the folding device bends both ends of the continuous sheet in the width direction together with the absorbent article. It is desirable to have a three-fold process for turning the continuous sheet into a three-fold state.
- a package with a tri-fold specification can be generated.
- the relative positional relationship between the continuous sheet and the absorbent article is maintained even in the case of tri-folding.
- the position of the absorbent article is set to an appropriate position on the continuous sheet. Can be maintained.
- a method for producing a package of such an absorbent article A third conveying step of conveying the continuous sheet in the three-fold state in the conveying direction;
- the continuous sheet in the tri-fold state has a plurality of second display elements arranged in the transport direction in correspondence with the absorbent article,
- the third conveying step includes A second positional deviation amount information acquisition step of acquiring information on a positional deviation amount of the second display element from a reference position based on the first pitch on the continuous sheet in the three-fold state;
- a tape member affixing device applies a tape member to the three-folded continuous sheet so that the three-folded sheet is the three-folded sheet.
- a fixing step of fixing in a folded state The tape member affixing device sends out the tape member to the predetermined position by rotating the rotating body while holding the tape member on the outer peripheral surface of the rotating body, It is desirable to shift the timing at which the tape member is fed to the predetermined position from the timing indicated by the synchronization signal for processing the continuous sheet at the first pitch based on the information on the shift amount.
- a method for producing a package of such an absorbent article A third conveying step of conveying the continuous sheet in the three-fold state in the conveying direction;
- the continuous sheet in the tri-fold state has a plurality of second display elements arranged in the transport direction in correspondence with the absorbent article,
- the third conveying step includes A second positional deviation amount information acquisition step of acquiring information on a positional deviation amount of the second display element from a reference position based on the first pitch on the continuous sheet in the three-fold state;
- the sealing and cutting device cuts the continuous sheet at a position between the pair of sealing portions while the sealing and cutting device forms a pair of sealing portions on the continuous sheet in the tri-fold state.
- a production step for producing the package In the generating step, the timing at which the sealing / cutting device forms the sealing portion and the timing at which the continuous sheet is cut from the timing indicated by the synchronization signal for processing the continuous sheet at the first pitch, It is desirable to shift based on the information of the shift amount.
- the sealing portion can be formed at an appropriate position in the three-fold continuous sheet, and the continuous sheet can be cut at the appropriate position.
- a method for producing a package of such an absorbent article In the three-fold process, the continuous sheet is folded into three by folding the both ends of the width direction inward at the folding lines set at two positions in the width direction of the continuous sheet. , The second display element is provided at a position between the fold lines in the continuous sheet, Acquisition of information on the amount of positional deviation of the second display element performed in the second positional deviation amount information acquisition step is performed by imaging the second display element of the continuous sheet in the tri-fold state with an imaging device. It is desirable to be based on
- the second display element is provided at a position between the fold lines. And this position is a position where the influence of the folding by tri-fold does not appear easily. Therefore, the imaging device can stably image the second display element.
- a method for producing a package of such an absorbent article, Bonding the absorbent article and the continuous sheet in the bonding step is made by an adhesive, Acquisition of information on the amount of deviation of the position of the display element and acquisition of information on the amount of deviation of the size of the center interval are performed when the imaging device moves the display element of the continuous sheet at a predetermined imaging position in the transport direction.
- an adhesive application device applies the adhesive to the continuous sheet at a position between the imaging position and the merge position in the transport direction.
- the adhesive is applied to the continuous sheet at a position close to the joining position. Therefore, the fluctuation
- coating can be made small, and, thereby, an absorbent article can be reliably joined to a continuous sheet with an adhesive agent.
- a method for producing a package of such an absorbent article When the continuous sheet fed from the material coil is a preceding continuous sheet, the preceding continuous sheet has a connecting step of connecting a leading edge of a subsequent continuous sheet fed from another material coil, In the connecting step, a deviation amount in the transport direction between a predetermined position of the display element of the preceding continuous sheet and a position corresponding to the predetermined position of the display element of the succeeding continuous sheet is the first amount. It is desirable to connect the succeeding continuous sheet to the preceding continuous sheet while aligning them so as to be within ⁇ 5% of one pitch.
- the preceding continuous sheet and the succeeding continuous sheet are within ⁇ 5% of the second pitch with respect to each other in the conveying direction of the display elements.
- the extension state adjusting device can stably adjust the extension state, and the feeding device can stably adjust the conveyance speed value. Can be done.
- a direction changing device receives the absorbent article conveyed from the upstream in the conveying direction in a state where the longitudinal direction is along the conveying direction, By changing the direction of the absorbent article received by the orientation changing device, the short direction intersecting the longitudinal direction of the absorbent article is in a state along the transport direction, It is desirable to convey the absorbent article in a state where the short side direction is along the conveying direction toward the joining position with the continuous sheet.
- the absorbent article is conveyed to the joining position with the continuous sheet in a state where the short side direction of the absorbent article is along the conveyance direction. Therefore, the pitch in the conveyance direction of the absorbent article can be reduced, and thereby the length in the conveyance direction of the continuous sheet required for each package can be shortened. And the improvement of the arrangement position accuracy at the time of arrange
- seat can be aimed at by this short part.
- the pitch changing device receives the absorbent article conveyed from upstream in the conveyance direction at a conveyance pitch different from the first pitch, It is desirable that the pitch changing device changes the transport pitch of the received absorbent article to the first pitch and transports the absorbent article in the transport direction.
- the absorbent articles can be easily placed at appropriate positions on the continuous sheet.
- extension state adjustment device adjusts the extension state of the continuous sheet based on the positional deviation information.
- the influence of the adjustment of the conveyance speed value by the above-described feeding device can be made almost not to affect the adjustment of the extension state by the extension state adjustment device. Therefore, it is possible to adjust more reliably so that the size of the center interval of the display elements becomes the first pitch.
- An apparatus for producing a package in which an absorbent article is packaged by a packaging sheet A first transport device for transporting a plurality of the absorbent articles at a first pitch; A second transport device for transporting the continuous sheet of the packaging sheet to the joining position with the absorbent article in the transport direction; A joining device for joining the absorbent article to the continuous sheet at the joining position,
- display elements are arranged in the transport direction at a center interval smaller than the first pitch in a non-extended state,
- the second transport device is A stretched state in which information on a shift amount of the center interval of the display element from the first pitch is acquired, and a stretch state of the continuous sheet is adjusted based on the information on the shift amount of the center interval.
- An adjustment device Information on the amount of positional deviation of the display element from the reference position based on the first pitch on the continuous sheet is acquired, and the continuous sheet is moved toward the merging position based on the information on the amount of positional deviation.
- An apparatus for manufacturing a package of absorbent articles comprising: a delivery device that adjusts a conveyance speed value at the time of delivery.
- FIG. 1A is a schematic plan view of the napkin 1
- FIG. 1B is a cross-sectional view taken along the line BB in FIG. 1A
- 2A is a schematic perspective view of the napkin 1 placed on the packaging sheet 7
- FIG. 2B is a schematic plan view of a package 7p in which the napkin 1 is packaged by the packaging sheet 7.
- FIG. These are the schematic plan views of the said package 7p seen from the reverse side of FIG. 2B.
- the napkin 1 is excreted by being interposed between a liquid-permeable top sheet 2 such as a nonwoven fabric, a liquid-impermeable back sheet 4 such as a film, and the like. And an absorbent body 3 such as pulp fiber that absorbs matter. And these sheets 2 and 4 are mutually bonded in the part which protrudes from the absorber 3 to the side, and, thereby, the absorber 3 is hold
- a liquid-permeable top sheet 2 such as a nonwoven fabric
- a liquid-impermeable back sheet 4 such as a film, and the like.
- an absorbent body 3 such as pulp fiber that absorbs matter.
- these sheets 2 and 4 are mutually bonded in the part which protrudes from the absorber 3 to the side, and, thereby, the absorber 3 is hold
- the planar shape of the napkin 1 is a substantially rectangular shape having a longitudinal direction and a width direction (hereinafter also referred to as a short direction). However, depending on the case, the napkin 1 may be disposed at a substantially central position in the longitudinal direction. It may have a pair of wings 1w, 1w protruding outward, in this example.
- the wing portions 1w and 1w are folded back to the back sheet 4 side in order to sandwich the underwear in cooperation with the back sheet 4 and are adhesively fixed to the underwear. Therefore, adhesives 5a and 5a are applied to the surfaces of the wing portions 1w and 1w that are to come into contact with the underwear when folded. Further, adhesives 5b and 5b for the same purpose are also applied to the surface of the back sheet 4 to be brought into contact with the underwear when the napkin 1 is used.
- the application areas of the adhesives 5a and 5b described above cover these application areas. Protection sheets 6a and 6b are provided. Specifically, at the time before this use, the pair of wing portions 1w and 1w are folded on the top sheet 2 side, and a single protective sheet 6a is bridged over the wing portions 1w and 1w, Thereby, the adhesives 5a and 5a of the wing parts 1w and 1w are protected (FIG. 2A). On the other hand, a protective sheet 6b is also provided in the areas where the adhesives 5b and 5b of the back sheet 4 are applied so as to cover almost the entire surface thereof, thereby protecting the adhesives 5b and 5b (FIG. 1B).
- the napkin 1 is in the form of a package 7 p individually packaged by a packaging sheet 7. That is, first, as shown in FIG. 2A, the napkin 1 placed on the substantially rectangular single-sheet packaging sheet 7 having a larger planar size than the napkin 1 while aligning the longitudinal directions of the napkin 1 is the packaging sheet. 7 in a state of being folded in the longitudinal direction, and in the three-folded state of FIG.
- the short side portion 7S of the packaging sheet 7 is fixed to the packaging sheet 7 with the adhesive of the tape member 8, and In the pair of long side portions 7Lg and 7Lg of the packaging sheet 7, the portions of the packaging sheet 7 facing each other are welded to form sealing portions 7j and 7j.
- the protective sheet 6b of the napkin 1 may be bonded and fixed to the packaging sheet 7 at a plurality of positions.
- the napkin is disposed at three positions in the longitudinal direction of the packaging sheet 7.
- One protective sheet 6 b is bonded to the packaging sheet 7.
- thermoplastic resin films such as polyethylene (PE) and polypropylene (PP), and nonwoven fabrics having thermoplastic resin fibers such as PE fibers and PP fibers.
- PE film is used, but it is not limited to this as long as it has a predetermined stretchability.
- a flower design G is printed on the packaging sheet 7 as an example of design for design purposes.
- the design G has a plurality of flower illustrations IL, IL, etc., and the design G is formed by combining the illustrations IL, IL of the plurality of flowers.
- a flower pattern G is printed over substantially the entire surface of one side of the package 7p.
- gravure printing, flexographic printing, inkjet printing, etc. can be illustrated.
- FIG. 3 is a schematic plan view showing a process of generating the package 7p of the napkin 1.
- the packaging sheet 7 is first conveyed in the conveyance direction in the form of a continuous sheet 7a along the conveyance direction.
- the napkin 1 conveyed along with the product pitch P1 in the conveyance direction merges at the merge position Pj in the conveyance direction.
- the napkin 1 is in a completed state, that is, the wing portions 1w and 1w are folded as shown in FIG. 2A, and the protective sheets 6a and 6b are also attached.
- each napkin 1 is transported in a so-called lateral flow posture in which the width direction (short direction) of the napkin 1 faces the transport direction.
- the napkins 1 and 1 are placed at the product pitch P1 in the conveying direction on the upper surface, which is one side of the continuous sheet 7a of the packaging sheet, by the joining device 25 at the same position Pj. Is fixed to the continuous sheet 7a with an adhesive (not shown).
- the continuous sheet 7a on which the napkin 1 is placed passes through the position of the folding device 61 in the transport direction, but when it passes, the continuous sheet 7a is folded in the width direction by the device 61.
- one end 7ae1 and the other end 7ae2 in the width direction of the continuous sheet 7a are each folded inward in the width direction.
- the napkin 1 is also folded in three.
- the continuous sheet 7a in the tri-fold state passes through the position of the tape member affixing device 71 in the transport direction, but when it passes, the above-mentioned end that overlaps the top and bottom in the thickness direction by the device 71.
- the tape member 8 is affixed to the continuous sheet 7a so as to straddle the portions 7ae1 and 7ae2.
- the continuous sheet 7a is fixed in a three-fold state by the tape member 8.
- the continuous sheet 7a in the three-fold state passes through the position of the sealing and cutting device 91 in the transport direction.
- the continuous sheet 7a is adjacent to the transport direction by the device 91 as shown in FIG.
- a heat welding process is performed on the portion 7an of the continuous sheet 7a between the matching napkins 1 and 1, that is, the napkin non-existing portion 7an where the napkin 1 does not exist in the sheet 7a.
- the part of the continuous sheet 7a which overlaps the upper and lower sides of thickness direction is joined and integrated by welding, and a pair of sealing parts 7j and 7j are formed along with a conveyance direction.
- the apparatus 91 cuts the continuous sheet 7a back and forth in the conveying direction at a position Pc between the pair of sealing portions 7j and 7j, thereby generating a package 7p of the napkin 1.
- FIG. 4 is a schematic side view of the production line LM for the package 7p of the napkin 1.
- FIG. 4 is a schematic side view of the production line LM for the package 7p of the napkin 1.
- the production line LM includes a napkin supply system L1 for supplying the napkin 1 (corresponding to a first transport device), a packaging sheet supply system L7a for supplying a continuous sheet 7a of packaging sheets (corresponding to a second transport device), and a napkin 1 And a processing system Lk that performs an appropriate processing on the continuous sheet 7a of the packaging sheet to which is bonded.
- the napkin supply system L1 and the packaging sheet supply system L7a merge at a predetermined merge position Pj, and the processing system Lk is connected downstream of the position Pj.
- each of the systems L1, L7a, Lk is provided with an appropriate transport device such as a belt conveyor or a transport roller. Therefore, when there is no special description, it is assumed that a conveyance object such as the continuous sheet 7a or the napkin 1 is conveyed in the conveyance direction by these conveyance devices.
- a conveyance object such as the continuous sheet 7a or the napkin 1 is conveyed in the conveyance direction by these conveyance devices.
- the belt conveyor a normal belt conveyor having an endless belt that circulates as a transport surface, a suction belt conveyor having an adsorption function on the outer peripheral surface of the endless belt, and the like can be given.
- a CD direction (a direction penetrating the paper surface in FIG. 4) is set as the width direction of the line LM.
- the CD direction is in the horizontal direction, but the present invention is not limited to this.
- a vertical up-down direction and a horizontal front-back direction are set as two directions orthogonal to the CD direction, whereby the conveying direction of the continuous sheet 7a of the packaging sheet and the napkin 1 is Depending on the position in the transport direction, it faces the direction defined by both the up-down direction and the front-rear direction.
- the width direction of the continuous sheet 7a is parallel to the CD direction.
- the Z direction is parallel to the thickness direction of the continuous sheet 7a and the napkin 1, respectively.
- Napkin supply system L1 receives the completed napkin 1 transported from the upper process and transports the napkin 1 while changing the state of the napkin 1 to a state suitable for packaging, and the merging position Pj. And a joining device 25 that joins the napkin 1 to the continuous sheet 7a of the packaging sheet.
- the napkin 1 is fed into the napkin state changing device 21 (corresponding to a direction changing device and a pitch changing device) from the upper process in a so-called longitudinal flow conveying form. That is, the napkin 1 is fed in a state where the longitudinal direction of the napkin 1 faces the transport direction. Therefore, in the apparatus 21, first, the conveyance form of the napkin 1 is changed from the longitudinal flow to the lateral flow suitable for packaging. That is, by changing the direction of the napkin 1 by 90 °, the longitudinal direction of the napkin 1 is set in the CD direction. Further, as shown in FIG. 5, the napkin 1 is fed into the apparatus 21 from the upper process at a transport pitch Pu different from the product pitch P1 (corresponding to the first pitch).
- the transport pitch Pu of the napkin 1 is re-pitched and changed to the product pitch P1. Then, the napkin 1 in such a state that the side flow and the product pitch P1 are arranged is sent to the joining device 25 located downstream in the transport direction.
- the following device 21 can be used as the napkin state changing device 21 having such a direction changing function and a re-pitch function.
- FIG. 6 is a schematic side view of the device 21.
- This device 21 has a rotating drum 22.
- the rotary drum 22 is driven to rotate about a rotation axis C22 along the CD direction.
- a plurality of holding pads 23, 23... are arranged on the outer periphery of the rotating drum 22 in the rotation direction Dc 22 of the rotating drum 22.
- Each holding pad 23 has a holding surface 23s facing outward in the rotational radial direction Dr22 of the rotary drum 22.
- the holding surface 23s can receive and hold the napkin 1 by suction.
- the holding pad 23 can be turned around an axis C23 along the rotational radial direction Dr22 that penetrates the plane center of the holding surface 23s, thereby realizing a direction changing function.
- the longitudinal direction of the napkin 1 can be changed from the conveying direction as the rotational direction Dc22 to the CD direction.
- the holding pad 23 moves in the rotation direction Dc22 integrally with the rotation operation of the rotary drum 22, but interlocks with the rotation operation based on the cam mechanism or the like in the rotation direction Dc22.
- the re-pitch function is realized by being configured to be relatively movable. That is, by changing the pitch between the holding pads 23 and 23 adjacent to each other in the rotation direction Dc22, the napkin 1 received at the transport pitch Pu different from the product pitch P1 can be changed to the product pitch P1.
- the joining device 25 includes a rotary drum 26 that can rotate around a rotation axis C26 along the CD direction, and a servo motor (not shown) as a drive source that drives the rotary drum 26. Further, suction force is generated on the outer peripheral surface 26 s of the rotary drum 26 by intake air. Therefore, the outer peripheral surface 26s receives and holds the napkin 1 sent from the napkin state changing device 21 at the product pitch P1 in the transport direction at the product pitch P1. Then, when the rotating drum 26 is driven to rotate, each napkin 1 is conveyed at the product pitch P1 with the rotation direction Dc26 as the conveyance direction, and each napkin 1 is placed on the upper surface as one side of the continuous sheet 7a at the merge position Pj. Rather than pressing, the napkin 1 is joined to the continuous sheet 7a with an adhesive (corresponding to a joining step).
- the driving and rotating operation of the rotary drum 26 is performed based on a synchronization signal.
- the synchronization signal is a signal obtained by repeatedly outputting a unit signal
- each unit signal is a rotation angle signal composed of rotation angle values of 0 ° to 360 °.
- each of the devices 71 and 91 of the processing system Lk which will be described later, has a patterned unit processing operation that should be repeated for each napkin 1, but the unit processing operation and the unit signal have a one-to-one correspondence by position control. Associated with. And in this joining apparatus 25, conveyance operation of product pitch P1 is matched as unit processing operation.
- the synchronization signal is transmitted to the servo motor of the rotary drum 26, and the position of the synchronization signal is controlled so as to rotate by a rotation angle corresponding to the product pitch P1 for each unit signal of the synchronization signal. Therefore, each time the unit signal is output, the rotary drum 26 transports the napkin 1 by the product pitch P1 in the transport direction.
- the generation of the synchronization signal is performed by an appropriate control unit (not shown) such as a sequencer or a computer. That is, the control unit includes a processor and a memory, and a program for generating a synchronization signal is stored in advance in the memory. Then, the processor reads out the program from the memory and executes it, thereby repeatedly generating a unit signal of the synchronization signal.
- the generation of the synchronization signal may be performed by an electric circuit. More specifically, the unit processing operation in which the synchronization signal is repeatedly performed on each napkin 1 by the other basic device is appropriately detected. It may be detected and generated by.
- a rotary die cutter roll (not shown) for punching and generating the napkin 1 is provided with a rotary encoder (not shown) for detecting the rotation operation, and the encoder moves the napkin in conjunction with the rotation operation of the cutter roll.
- the unit signal may be output every time one is generated.
- the packaging sheet supply system L7a includes a feeding device 31 for feeding out the continuous sheet 7a of the packaging sheet from the material coil 7ac, and a continuous sheet 7a of the packaging sheet that is fed out and conveyed to the napkin supply system L1. And a delivery device 45 for delivering to the merge position Pj. And the napkin 1 is mounted and joined to the continuous sheet 7a of a packaging sheet by the joining apparatus 25 mentioned above in the joining position Pj.
- the continuous sheet 7a as the material of the packaging sheet 7 is carried into the production line LM in the form of a material coil 7ac.
- the material coil 7ac is a continuous sheet 7a of a packaging sheet wound in a continuous direction.
- the continuous sheet 7a of the packaging sheet is preliminarily printed in a continuous direction at another factory or the like as shown in the schematic plan view of FIG.
- the above-described symbols G, G... Are printed with the pitch PG, and the printing pitch PG is smaller than the product pitch P1 of the napkin 1 described above.
- the extension state adjusting device 41 performs the process of changing the extension state so as to achieve the target extension magnification Ms. And the apparatus 41 is distribute
- Lt / Ln a division value obtained by dividing the total length Lt in the expanded state by the natural length Ln.
- the target expansion magnification Ms is 1.026 times. However, it is not limited to this.
- Feeding device 31 As shown in FIG. 4, the feeding device 31 is fed from a rotating shaft portion 31a along the CD direction, a servo motor (not shown) as a drive source for driving and rotating the rotating shaft portion 31a, and the rotating shaft portion 31a. And a tension controller 35 for adjusting the tension of the continuous sheet 7a of the packaging sheet conveyed. And in the state which inserted the said rotating shaft part 31a in the through-hole which the material coil 7ac has in the center part, and supported the material coil 7ac by the said rotating shaft part 31a, the said rotating shaft part 31a is based on said tension value. By driving and rotating, the continuous sheet 7a of the packaging sheet is fed out from the material coil 7ac.
- the rotation shaft portion 31a is a shaft member along the CD direction, for example.
- the rotating shaft portion 31a is rotatably supported by an appropriate bearing member (not shown) provided in the production line LM.
- the dancer type is used for the tension controller 35. That is, the controller 35 determines the position of the dancer roll 35d that can be rotated about the rotation axis along the CD direction and the dancer roll 35d in the predetermined direction while being guided to move in a predetermined direction (vertical direction in FIG. 4). It includes a measuring instrument (not shown) such as an encoder that detects and outputs position information, and a control unit (not shown) such as a sequencer or a computer to which the position information is input. And the continuous sheet 7a of the packaging sheet is wound around the dancer roll 35d, thereby forming a loop of the continuous sheet 7a, and the control unit is based on the input position information. The feeding speed value (mpm) of the rotating shaft portion 31a is controlled so that the size of the loop is constant. As a result, the tension value of the continuous sheet 7a at the position of the dancer roll 35d is adjusted to a predetermined target value.
- a measuring instrument such as an encoder that detects and outputs position information
- the extension state adjusting device 41 includes a pair of upper and lower nip rolls 41u and 41d that rotate around a rotation axis along the CD direction, and a servo as a drive source that drives and rotates the pair of nip rolls 41u and 41d.
- a motor (not shown).
- the delivery device 45 located downstream of the extension state adjusting device 41 includes a roll 45r that rotates around a rotation axis along the CD direction, and a servo motor (not shown) as a drive source that drives and rotates the roll 45r.
- a servo motor not shown
- the latter delivery device 45 sends out the continuous sheet 7a of the packaging sheet to the merging position Pj.
- the design is placed at the reference position on the continuous sheet 7a of the packaging sheet determined based on the product pitch P1.
- the conveyance speed value (mpm) of the continuous sheet 7a is adjusted so that G is positioned (corresponding to the conveyance speed value adjustment step). That is, the conveyance speed value of the continuous sheet 7a of the packaging sheet is adjusted so that the pattern G is located at the reference position indicated by the synchronization signal.
- each napkin 1 is placed and joined at an appropriate position corresponding to each symbol G of the continuous sheet 7a.
- the extension state adjusting device 41 adjusts the extension state of the continuous sheet 7a in cooperation with the feeding device 45 (corresponding to the extension state adjusting step). That is, the stretched state is adjusted so that the stretch magnification of the continuous sheet 7a becomes the above-described target stretch magnification Ms. As a result, the pitch in the conveying direction in which the symbols G are arranged is adjusted so as to be aligned with the above-described product pitch P1 (FIG. 8), which is also effective for placing the napkin 1 at the appropriate position. Contribute.
- a continuous rectangular registration mark M1 (corresponding to a display element) corresponding to each pattern G is previously provided on the continuous sheet 7a of the packaging sheet in another factory or the like in advance. It is printed with.
- the imaging device 47 continuously captures images of the continuous sheet 7a at a position P47 in the conveying direction between the extension state adjusting device 41 and the feeding device 45 (hereinafter also referred to as an imaging position P47).
- the image data of the sheet 7a is generated.
- the imaging device 47 receives the above-described synchronization signal. Therefore, the imaging operation is performed every time the rotation angle value of the synchronization signal matches the specified rotation angle value recorded in advance in the memory of the imaging device 47.
- the imaging operation is performed with a field of view (angle of view) such that at least two registration marks M1 and M1 adjacent to each other in the transport direction enter the captured image.
- control part 48 will analyze the image data transmitted from the imaging device 47 by a binarization process etc., and the deviation
- the position of the registration mark M1 on the image data is acquired by binarization processing or the like, and the amount of deviation between this position and the reference position on the image data recorded in advance in the memory of the control unit 48 is calculated. This is information on the amount of displacement of the position.
- the conveyance speed value when the feeding device 45 sends the continuous sheet 7a toward the joining position Pj is adjusted.
- the control unit 48 adds a predetermined gain to the deviation amount.
- the conveyance speed value of the roll 45r of the delivery device 45 is made smaller than the current value by the multiplied adjustment amount, while indicating that the “registration mark M1 is located upstream of the reference position in the conveyance direction”.
- control unit 48 analyzes the same image data to acquire information on the amount of deviation of the size of the center interval of the registration mark M1 from the product pitch P1. For example, based on the position of the registration mark M1 on the image data, the size of the center interval between the registration marks M1, M1 adjacent in the transport direction is obtained on the image data and stored in advance in the memory of the control unit 48. The difference with the value of the product pitch P1 is calculated, and the difference is used as information on the deviation amount of the center interval. And the expansion
- the control unit 48 adjusts the deviation amount by a predetermined gain.
- the conveyance speed value of the nip rolls 41u and 41d of the extension state adjusting device 41 is made smaller than the current value, thereby extending the continuous sheet 7a, while “the size of the center interval is larger than the product pitch P1”.
- the conveyance speed value of the nip rolls 41u, 41d is made larger than the current value by an adjustment amount obtained by multiplying the deviation amount by a predetermined gain, thereby shortening the continuous sheet 7a.
- the extension state of the continuous sheet 7a between the delivery device 45 and the extension state adjustment device 41 may change by the adjustment amount. Therefore, preferably, not only the conveyance speed value of the delivery device 45 is adjusted based on the information on the positional deviation amount, but also the conveyance speed value of the extension state adjustment device 41 may be changed in the same manner. In the example, this is the case. In this way, it is possible to make the influence of the adjustment of the conveyance speed value by the sending device 45 almost not reach the adjustment of the extension state by the extension state adjustment device 41.
- the adhesive application device 51 applies an adhesive for joining the napkin 1 to the continuous sheet 7a toward the continuous sheet 7a.
- coating of this adhesive agent is made intermittently for every unit signal based on the above-mentioned synchronizing signal. Therefore, it is possible to accurately apply the adhesive to each position where each napkin 1 is to be placed on the continuous sheet 7a.
- the position in the transport direction in which the apparatus 51 applies the adhesive to the continuous sheet 7 a is set between the feeding apparatus 45 and the imaging position P47 of the imaging apparatus 47. Therefore, the adhesive is applied to the continuous sheet 7a at a position relatively close to the joining position Pj. Therefore, the fluctuation
- ⁇ Processing System Lk As shown in FIG. 4, in the processing system Lk, the continuous sheet 7a of the packaging sheet to which the napkin 1 is joined is conveyed in the conveyance direction. In the processing system Lk, a bending device 61, a tape member attaching device 71, and a sealing and cutting device 91 are arranged in this order in the transport direction.
- the folding device 61 folds the continuous sheet 7a of the packaging sheet to which the napkin 1 is joined together with the napkin 1 (corresponding to a three-fold process).
- the tape member affixing device 71 affixes the tape member 8 (FIGS. 2B and 3) to the continuous sheet 7a in correspondence with each napkin 1 so as to fix the continuous sheet 7a in a three-fold state (in the fixing step). Equivalent).
- the sealing / cutting device 91 forms the pair of sealing portions 7j and 7j (FIG. 3) on the continuous sheet 7a in the tri-fold state, while the continuous sheet 7a is positioned at a position between the pair of sealing portions 7j and 7j. By cutting, the package 7p is generated (corresponding to a generation step).
- the tape member affixing device 71 and the sealing / cutting device 91 are basically driven based on a synchronization signal.
- each of the devices 61, 71, 91 will be described.
- the bending device 61 has bending members (not shown) such as appropriate plate members and roller members on both sides in the CD direction. 3 and 4, when the continuous sheet 7a of the packaging sheet to which the napkin 1 is bonded passes through the position of the bending member, the folding member abuts against the continuous sheet 7a, whereby the napkin 1 And both end portions 7ae1 and 7ae2 in the width direction of the continuous sheet 7a are bent inward in the width direction. And thereby, the continuous sheet 7a is made into a trifold state with the napkin 1.
- FIG. 9 is a schematic side view of the tape member affixing device 71.
- the tape member affixing device 71 has a rotating drum 72 (corresponding to a rotating body) that can rotate around a rotation axis along the CD direction with the outer peripheral surface 72s facing the conveyance path of the three-fold continuous sheet 7a, And a servo motor (not shown) as a drive source for driving and rotating the drum 72.
- An adsorption force is generated on the outer peripheral surface 72s of the rotating drum 72 by intake air or the like.
- a plurality of tape members 8, 8... Are formed on the outer peripheral surface 72s at the product pitch P1 in the rotation direction Dc72. Are held side by side.
- each tape member 8 is sent to a facing position P7a (corresponding to a predetermined position) facing the continuous sheet 7a in the three-fold state by the rotation of the rotary drum 72 and passes through the same position P7a, Based on the adhesive, each tape member 8 adheres to the continuous sheet 7a, and thereby the tape member 8 is delivered from the outer peripheral surface 72s of the rotating drum 72 to the continuous sheet 7a.
- Rotational operation of the rotary drum 72 is basically performed based on a synchronization signal. That is, the position of the servo motor of the rotary drum 72 is controlled so that the position where the tape member 8 is sucked and held on the outer peripheral surface 72s becomes the command position in the rotation direction Dc72 indicated by the synchronization signal.
- the tape member 8 arranged on the outer peripheral surface 72s at the product pitch P1 is conveyed in the rotation direction Dc72 by the product pitch P1.
- the conveying device CV such as a belt conveyor or a conveying roller that conveys the continuous sheet 7a in this processing system Lk is basically speed-controlled using a conveying speed value corresponding to the synchronization signal as a command value.
- the conveyance speed value may fluctuate substantially periodically, for example, due to various control disturbances and variations in stretchability of the continuous sheet 7a itself.
- the stretched state of the three-fold continuous sheet 7a can also change, and as a result, the stretched state changes from the stretched state at the target stretch magnification Ms.
- the pitch in the conveying direction of the pattern G of the continuous sheet 7a can deviate from the product pitch P1, and the pitch of the napkins 1 is also the product pitch P1. Can be off. And in such a case, even if it tries to adhere
- a specific mark M2 printed in a substantially rectangular shape on the continuous sheet 7a separately from the aforementioned registration mark M1 is used as a mark M2.
- information on the amount of deviation of the position in the transport direction of the mark M2 from the reference position, which is the position where the mark M2 should be originally positioned is acquired (second). This corresponds to a positional deviation amount information acquisition step), and based on this positional deviation information, the timing at which the rotary drum 72 sends the tape member 8 to the facing position P7a is shifted from the timing indicated by the synchronization signal.
- timing shifting process is performed using an imaging device 81 such as a CCD camera and a control unit 82 such as a computer (FIG. 4), as in the case of the above-described packaging sheet supply system L7a. This is done as follows.
- the mark M2 (corresponding to the second display element) to be the mark M2 is printed in advance at the above-described printing pitch PG in another factory or the like. . And after passing the above-mentioned joining position Pj, the said mark M2 will be in the state located corresponding to each napkin 1, as shown in FIG.
- the imaging device 81 captures the continuous sheet 7a at a position in the conveyance direction between the bending device 61 and the rotary drum 72 of the tape member affixing device 71, and generates continuous sheet image data.
- the imaging device 81 receives the synchronization signal.
- the imaging operation is performed each time the rotation angle value of the synchronization signal matches the specified rotation angle value recorded in advance in the memory of the imaging device 81.
- the imaging operation is performed with a field of view (angle of view) in which at least one mark M2 enters the captured image.
- the control part 82 will acquire the information of the deviation
- the reference position is a position where the mark M2 should originally be located when the continuous sheet 7a is maintained at the product pitch P1.
- information on the reference position on the image data is recorded in advance in the memory of the control unit 82. Therefore, for example, the position of the mark M2 on the image data is acquired by binarization processing or the like, the amount of deviation between this position and the reference position on the image data is calculated, and this is used as the position deviation. Use quantity information.
- the command position in the rotation direction Dc72 indicated by the synchronization signal is corrected. For example, when the information on the amount of deviation indicates that “the mark M2 is located downstream of the reference position in the transport direction”, the control unit 82 multiplies the amount of deviation by a predetermined gain. If the above-mentioned command position is increased by the adjusted amount while the mark M2 indicates that the mark M2 is located upstream in the transport direction from the reference position, the amount of deviation is multiplied by a predetermined gain. Decrease the command position by the amount.
- the three-fold processing of the continuous sheet 7a shown in FIG. 3 is performed at both end portions 7ae1, 7ae2 in the width direction at the folding lines Lb, Lb set at two positions in the width direction (CD direction) in the continuous sheet 7a.
- the mark M2 is provided at a position between the folding lines Lb and Lb as shown in FIG. And if it becomes like this, the position of this mark M2 will become a position where the influence of the folding of a trifold process does not appear easily, As a result, the mark M2 can be imaged stably with the imaging device 81. .
- the tape member pasting device 71 is based on the positional deviation information as described above. To control. This also applies to the sealing / cutting device 91 described later.
- FIG. 10 is a schematic side view of the sealing / cutting device 91. In FIG. 10, a partially enlarged view of the device 91 is also shown.
- the sealing / cutting device 91 is a portion 7an between the napkins 1 and 1 adjacent to each other in the conveying direction in the three-folded continuous sheet 7a, that is, the napkin that does not have the napkin 1 in the continuous sheet 7a.
- a pair of sealing portions 7j and 7j are formed by heat welding on the existing portion 7an, and the continuous sheet 7a is cut at a position between the pair of sealing portions 7j and 7j. 7p is generated.
- the sealing and cutting device 91 includes a pair of upper and lower rolls 91u and 91d that can rotate around a rotation axis along the CD direction, and a servo motor (not shown) as a drive source that drives and rotates the pair of rolls 91u and 91d. And having.
- a pair of convex portions 91up, 91up corresponding to the shape of the pair of sealing portions 7j, 7j is provided at predetermined angles such as 90 ° in the rotational direction Dc91.
- a cutter blade 91uc is provided at a position between the pair of convex portions 91up and 91up.
- the shape of the outer peripheral surface of the lower roll 91d is a shape that can receive the pair of convex portions 91up and 91up and the cutter blade 91uc, and in this example, the pair of convex portions 91up and 91up.
- the cutter blade 91uc has a pair of receiving projections 91dp, 91dp and a receiving blade 91dc at positions facing each other.
- the rotation operations of the rolls 91u and 91d are also performed based on the above-described synchronization signal. That is, basically, the servo motor is position-controlled so that the positions of the pair of convex portions 91up and 91up and the cutter blade 91uc become the command position in the rotation direction Dc91 indicated by the synchronization signal.
- the specific mark M2 formed on the continuous sheet 7a is used as the mark M2, and the continuous sheet 7a is maintained at the product pitch P1.
- information on the amount of deviation of the position of the mark M2 from the reference position, which is the position where the mark M2 should be originally positioned is acquired.
- disconnects the continuous sheet 7a are shifted from the timing which a synchronizing signal shows based on the information of the deviation
- the same information as that used in the above-described tape member affixing device 71 is also used as the information on the displacement amount of the position, and the control unit 82 (FIG. 4) uses a pair of rolls 91u. , 91d is controlled in consideration of position shift information. That is, the command position in the rotation direction Dc91 indicated by the synchronization signal is corrected based on information on the amount of deviation of the position. More specifically, when the information on the amount of deviation indicates that “the mark M2 is located downstream of the reference position in the transport direction”, the control unit 82 sets the deviation amount to a predetermined gain.
- the deviation amount is multiplied by a predetermined gain.
- the command position is reduced by the adjusted amount. And thereby, it becomes possible to form a pair of sealing part 7j, 7j correctly in the target position of the napkin non-existing part 7an, or to cut
- FIG. 11 is a schematic side view of the production line LM of the first modified example.
- the main difference from the above-described embodiment (FIG. 4) is that, as shown in FIG. 11, between the nip rolls 41u and 41d of the extension state adjusting device 41 and the roll 45r of the delivery device 45 in the packaging sheet supply system L7a. More specifically, a pair of nip rolls 43u and 43d are additionally provided at a position between the imaging position P47 and the roll 45r of the delivery device 45.
- Other configurations are generally the same as those in the above-described embodiment. Therefore, in the following, this difference will be mainly described, the same reference numerals are given to the same configurations, and the description thereof will be omitted.
- the image pickup position P47 of the image pickup device 47 is set to the extended state adjustment device 41 due to the additional installation of the nip rolls 43u and 43d at the positions as described above.
- the nip rolls 41u and 41d and the pair of nip rolls 43u and 43d added this time are positioned.
- the pair of nip rolls 43u and 43d are supported so as to be rotatable about a rotation axis along the CD direction, and are rotated by a servo motor (not shown) as a drive source.
- the pair of nip rolls 43u and 43d are controlled to perform the same rotational operation as the nip rolls 41u and 41d of the above-described extension state adjusting device 41. That is, the control unit 48 that controls the pair of nip rolls 43u and 43d controls the rotational operation of the nip rolls 43u and 43d based on the information on the amount of deviation of the size of the center interval described above. The rotation operation of the nip rolls 43u and 43d is also controlled based on the information on the deviation amount. Therefore, at the imaging position P47 described above, the stretched state of the continuous sheet 7a is maintained substantially constant without substantially changing. As a result, the imaging device 47 can stably perform imaging of the continuous sheet 7a, and as a result, it is possible to improve the accuracy of the positional shift amount information and the center interval size shift amount information. .
- FIG. 12 is a schematic side view of the production line LM of the second modified example.
- the main differences from the above-described embodiment (FIG. 4) are that, as shown in FIG. 12, (1) two feeding devices 31, 31 are provided, and (2) feeding in the transport direction. There are two points that the material splicing device 33 and the accumulating device 34 are arranged at a position between the rotating shaft portion 31a of the device 31 and the dancer roll 35d. Other configurations are generally the same as those in the above-described embodiment. Therefore, below, these differences are mainly demonstrated, the same code
- each rotary shaft portion 31a, 31a is driven and rotated by a servo motor (not shown) as a drive source, and each rotary shaft portion 31a, 31a has a material coil 7ac, 7ac at the center. It is inserted into the through hole. Then, with the material coil 7ac supported by the rotation shaft portion 31a, the rotation shaft portion 31a is driven and rotated so that the size of the loop is basically constant based on the position information of the dancer roll 35d.
- these two feeding devices 31, 31 are used by switching alternately. That is, while the one feeding device 31 is feeding the continuous sheet 7a of the packaging sheet, the other feeding device 31 is substantially in a standby state, and the continuous sheet 7a of the packaging sheet of the one feeding device 31 is likely to disappear. Instead, the other feeding device 31 in the standby state starts the feeding operation of the continuous sheet 7a of the packaging sheet.
- the material splicing device 33 uses the continuous sheet 7a of the standby material coil 7ac supported by the other feeding device 31 as the preceding continuous sheet 7a being fed by the one feeding device 31 as the subsequent continuous sheet 7a. It is a device to connect. And thereby, the continuous sheet 7a of a packaging sheet can be let out continuously without interruption.
- the material splicing device 33 has a well-known configuration and includes, for example, a clamp mechanism (not shown) and a cutter mechanism (not shown). Then, connection processing is performed as follows. First, the feeding leading end 7ae of the continuous sheet 7a of the succeeding material coil 7ac waiting in the other feeding device 31 is placed on one clamping member of the clamp mechanism, and double-sided tape is attached to the leading end 7ae. Attach (not shown). Next, while one feeding device 31 stops the feeding operation of the preceding continuous sheet 7a, the one clamping member is moved toward the other clamping member facing the continuous sheet 7a.
- the pair of pressing members sandwich the three of the continuous sheet 7a, the double-sided tape, and the tip 7ae, and thereby the preceding continuous sheet 7a and the other continuous feeding sheet 31a that are stopped being fed by one feeding device 31.
- the continuous sheet 7a of the succeeding material coil 7ac on standby in the feeding device 31 is connected (corresponding to a connection process).
- the preceding continuous sheet 7a of one feeding device 31 is cut by the cutter mechanism at a position upstream of the portion connected by the double-sided tape.
- the wrapping sheet continues from the preceding material coil 7ac of one feeding device 31 to the succeeding material coil 7ac of the other feeding device 31.
- the material coil 7ac that feeds out the sheet 7a is switched.
- the extension state adjusting device 41 can stably adjust the extension state.
- the conveyance speed value can be adjusted stably.
- the storage device 34 is a device that stores the continuous sheet 7a of the packaging sheet fed from the feeding device 31 in the form of a plurality of loops so that it can be supplied downstream in the conveying direction.
- the feeding operation of both the feeding devices 31 and 31 is stopped as in the case where the material splicing device 34 connects the subsequent continuous sheet 7a to the preceding continuous sheet 7a, the above loop is executed.
- the continuous sheet 7a can be supplied to the joining position Pj with the napkin supply system L1. Therefore, it is not necessary to stop the operation of the various devices 21, 25, 71, 91 of the napkin supply system L1 and the processing system Lk with the above connection, and the productivity can be improved.
- Such a storage device 34 is well known. Therefore, further explanation is omitted.
- the registration mark M ⁇ b> 1 is also printed on the continuous sheet 7 a of the packaging sheet in addition to the design pattern G.
- the registration mark M1 corresponds to the “display element” in the claims. That is, the feeding device 45 and the extension state adjusting device 41 are controlled based on the information on the displacement amount of the registration mark M1 and the information on the displacement amount of the center interval of the registration mark M1, respectively.
- the symbol G may be used instead of the registration mark M1.
- the continuous sheet 7a is printed with the mark M2 as the second display element separately from the registration mark M1 as the display element.
- the tape member affixing device 71 and the sealing / cutting device 91 were controlled using the mark M2.
- the registration marks M1 may be used as the mark M2 to control the devices 71 and 91.
- the “display element” according to claim 1 may also serve as the “second display element” according to claims 3 to 5, and furthermore, a part of the display element may also serve as the second display element. Also good.
- the registration mark M1 as the display element in FIG. 7 is formed by printing on the continuous sheet 7a of the packaging sheet, but the formation of the display element is not limited to printing.
- the display element may be formed by pressing the continuous sheet 7a of the packaging sheet in the thickness direction to form a plurality of dot-like recesses or a plurality of linear recesses.
- the sanitary napkin 1 of FIG. 1A is illustrated as an example of the absorbent article, but the present invention is not limited to this as long as it absorbs the excrement of the wearer.
- a disposable diaper or a urine collecting pad may be used.
- each apparatus 41 and 45 may be comprised with the belt conveyor, respectively. That is, for example, instead of the roll 45r and the nip rolls 41u and 41d, a configuration having a pair of rolls and an endless belt wound around the pair of rolls is used, and a continuous sheet is provided on the outer peripheral surface of the endless belt.
- the sheet 7a may be conveyed by contacting one surface of 7a.
- an image sensor CV-5000 manufactured by Keyence Corporation, but not limited to this. That is, a device other than the image sensor may be used, or a sensor other than the imaging devices 47 and 81 (for example, a phototube). The above information may be acquired using.
Abstract
Description
先ず、コンベア等の適宜な搬送装置によって、ナプキンが搬送方向に製品ピッチで並んで搬送される。一方、包装シートの連続シートも、搬送ローラー等の適宜な搬送装置によって搬送方向に搬送されているが、同シートには、上記製品ピッチよりも小さい印刷ピッチで図柄が搬送方向に並んで印刷されている。
そのため、同連続シート上にナプキンを配置する際には、上記の製品ピッチと印刷ピッチとの差分だけ同連続シートを伸長した状態にして、これにより、連続シートの図柄の位置とナプキンの位置とが一致するようにする。
包装シートによって吸収性物品が包装されてなる包装体を製造する方法であって、
第1ピッチで複数の前記吸収性物品を搬送する第1搬送工程と、
前記包装シートの連続シートを前記吸収性物品との合流位置へ搬送方向に搬送する第2搬送工程と、
前記合流位置において前記連続シートに前記吸収性物品を接合する接合工程と、を有し、
前記連続シートには、非伸長状態において前記第1ピッチよりも小さい中心間隔で表示要素が前記搬送方向に並んでおり、
前記第2搬送工程は、
前記第1ピッチからの前記表示要素の前記中心間隔の大きさのずれ量の情報を取得し、前記中心間隔の大きさのずれ量の情報に基づいて伸長状態調整装置が前記連続シートの伸長状態を調整する伸長状態調整工程と、
前記連続シート上における前記第1ピッチに基づく基準位置からの前記表示要素の位置のずれ量の情報を取得し、前記位置のずれ量の情報に基づいて、前記合流位置へ向けて前記連続シートを送り出し装置が送り出す際の搬送速度値を調整する搬送速度値調整工程と、を有することを特徴とする吸収性物品の包装体の製造方法である。
また、
包装シートによって吸収性物品が包装されてなる包装体を製造する装置であって、
第1ピッチで複数の前記吸収性物品を搬送する第1搬送装置と、
前記包装シートの連続シートを前記吸収性物品との合流位置へ搬送方向に搬送する第2搬送装置と、
前記合流位置において前記連続シートに前記吸収性物品を接合する接合装置と、を有し、
前記連続シートには、非伸長状態において前記第1ピッチよりも小さい中心間隔で表示要素が前記搬送方向に並んでおり、
前記第2搬送装置は、
前記第1ピッチからの前記表示要素の前記中心間隔の大きさのずれ量の情報を取得し、前記中心間隔の大きさのずれ量の情報に基づいて前記連続シートの伸長状態を調整する伸長状態調整装置と、
前記連続シート上における前記第1ピッチに基づく基準位置からの前記表示要素の位置のずれ量の情報を取得し、前記位置のずれ量の情報に基づいて、前記合流位置へ向けて前記連続シートを送り出す際の搬送速度値を調整する送り出し装置と、を有することを特徴とする吸収性物品の包装体の製造装置である。
本発明の他の特徴については、本明細書及び添付図面の記載により明らかにする。
包装シートによって吸収性物品が包装されてなる包装体を製造する方法であって、
第1ピッチで複数の前記吸収性物品を搬送する第1搬送工程と、
前記包装シートの連続シートを前記吸収性物品との合流位置へ搬送方向に搬送する第2搬送工程と、
前記合流位置において前記連続シートに前記吸収性物品を接合する接合工程と、を有し、
前記連続シートには、非伸長状態において前記第1ピッチよりも小さい中心間隔で表示要素が前記搬送方向に並んでおり、
前記第2搬送工程は、
前記第1ピッチからの前記表示要素の前記中心間隔の大きさのずれ量の情報を取得し、前記中心間隔の大きさのずれ量の情報に基づいて伸長状態調整装置が前記連続シートの伸長状態を調整する伸長状態調整工程と、
前記連続シート上における前記第1ピッチに基づく基準位置からの前記表示要素の位置のずれ量の情報を取得し、前記位置のずれ量の情報に基づいて、前記合流位置へ向けて前記連続シートを送り出し装置が送り出す際の搬送速度値を調整する搬送速度値調整工程と、を有することを特徴とする吸収性物品の包装体の製造方法である。
また、同連続シートに吸収性物品は接合される。よって、その後に連続シートに対して適宜な加工処理がなされる場合にも、吸収性物品の位置は、連続シート上の適正位置に維持される。そして、このことも、見栄えの良好な包装体の製造に寄与する。
前記合流位置よりも前記搬送方向の下流側の位置を前記連続シートが通過する際に、折り曲げ装置が、前記吸収性物品と一緒に前記連続シートの幅方向の両端部をそれぞれ内側へ折り曲げることにより、前記連続シートを三つ折り状態にする三つ折り工程を有するのが望ましい。
前記三つ折り状態の前記連続シートを前記搬送方向に搬送する第3搬送工程を有し、
前記三つ折り状態の前記連続シートは、前記吸収性物品に対応させて前記搬送方向に並ぶ複数の第2表示要素を有し、
前記第3搬送工程は、
前記三つ折り状態の前記連続シート上における前記第1ピッチに基づく基準位置からの前記第2表示要素の位置のずれ量の情報を取得する第2位置ずれ量情報取得工程と、
前記三つ折り状態の前記連続シートが前記搬送方向の所定位置を通過する際に、前記三つ折り状態の前記連続シートにテープ部材貼り付け装置がテープ部材を貼り付けることにより、前記連続シートを前記三つ折り状態に固定する固定工程と、を有し、
前記テープ部材貼り付け装置は、前記テープ部材を回転体の外周面に保持しながら前記回転体が回転することにより、前記テープ部材を前記所定位置へと送り出し、
前記テープ部材を前記所定位置へと送り出すタイミングを、前記第1ピッチで前記連続シートを処理するための同期信号が示すタイミングから、前記ずれ量の情報に基づいてずらすのが望ましい。
前記三つ折り状態の前記連続シートを前記搬送方向に搬送する第3搬送工程を有し、
前記三つ折り状態の前記連続シートは、前記吸収性物品に対応させて前記搬送方向に並ぶ複数の第2表示要素を有し、
前記第3搬送工程は、
前記三つ折り状態の前記連続シート上における前記第1ピッチに基づく基準位置からの前記第2表示要素の位置のずれ量の情報を取得する第2位置ずれ量情報取得工程と、
前記三つ折り状態の前記連続シートに一対の封止部を封止切断装置が形成しつつ、前記一対の封止部同士の間の位置で前記連続シートを前記封止切断装置が切断することにより、前記包装体を生成する生成工程と、を有し、
前記生成工程では、前記封止切断装置が前記封止部を形成するタイミング及び前記連続シートを切断するタイミングを、前記第1ピッチで前記連続シートを処理するための同期信号が示すタイミングから、前記ずれ量の情報に基づいてずらすのが望ましい。
前記三つ折り工程では、前記折り曲げ装置が前記連続シートにおける前記幅方向の2カ所に設定された折り線で前記幅方向の両端部をそれぞれ内側へ折り曲げることによって、前記連続シートは三つ折り状態にされ、
前記連続シートにおける前記折り線同士の間の位置に前記第2表示要素が設けられており、
前記第2位置ずれ量情報取得工程でなされる前記第2表示要素の位置のずれ量の情報の取得は、前記三つ折り状態の前記連続シートの前記第2表示要素を、撮像装置で撮像することに基づいてなされるのが望ましい。
前記接合工程での前記吸収性物品と前記連続シートとの接合は、接着剤によってなされ、
前記表示要素の位置のずれ量の情報の取得、及び前記中心間隔の大きさのずれ量の情報の取得は、撮像装置が、前記搬送方向の所定の撮像位置で前記連続シートの前記表示要素を撮像することに基づいてなされ、
前記搬送方向における前記撮像位置と前記合流位置との間の位置で、接着剤塗布装置が前記接着剤を前記連続シートに塗布するのが望ましい。
資材コイルから繰り出される前記連続シートを先行の連続シートとした場合に、前記先行の連続シートに、別の資材コイルから繰り出される後行の連続シートの繰り出し先端部を接続する接続工程を有し、
前記接続工程では、前記先行の連続シートの前記表示要素における所定位置と、前記後行の連続シートの前記表示要素において前記所定位置に相当する位置との間の前記搬送方向のずれ量が前記第1ピッチの±5%以内に収まるように位置合わせしながら、前記先行の連続シートに、前記後行の連続シートを接続するのが望ましい。
前記第1搬送工程では、
長手方向が前記搬送方向に沿った状態で前記搬送方向の上流から搬送される前記吸収性物品を向き変更装置が受け取り、
前記向き変更装置が、受け取った前記吸収性物品の向きを変更することにより、前記吸収性物品の前記長手方向と交差する短手方向が前記搬送方向に沿った状態にし、
前記短手方向が前記搬送方向に沿った状態の前記吸収性物品を、前記連続シートとの合流位置の方へ搬送するのが望ましい。
前記第1搬送工程では、
前記第1ピッチとは異なる搬送ピッチで前記搬送方向の上流から搬送される前記吸収性物品をピッチ変更装置が受け取り、
前記ピッチ変更装置が、前記受け取った前記吸収性物品の搬送ピッチを前記第1ピッチに変更して、前記吸収性物品を前記搬送方向に搬送するのが望ましい。
前記伸長状態調整工程では、前記伸長状態調整装置が、前記位置のずれ量の情報に基づいても、前記連続シートの伸長状態を調整するのが望ましい。
包装シートによって吸収性物品が包装されてなる包装体を製造する装置であって、
第1ピッチで複数の前記吸収性物品を搬送する第1搬送装置と、
前記包装シートの連続シートを前記吸収性物品との合流位置へ搬送方向に搬送する第2搬送装置と、
前記合流位置において前記連続シートに前記吸収性物品を接合する接合装置と、を有し、
前記連続シートには、非伸長状態において前記第1ピッチよりも小さい中心間隔で表示要素が前記搬送方向に並んでおり、
前記第2搬送装置は、
前記第1ピッチからの前記表示要素の前記中心間隔の大きさのずれ量の情報を取得し、前記中心間隔の大きさのずれ量の情報に基づいて前記連続シートの伸長状態を調整する伸長状態調整装置と、
前記連続シート上における前記第1ピッチに基づく基準位置からの前記表示要素の位置のずれ量の情報を取得し、前記位置のずれ量の情報に基づいて、前記合流位置へ向けて前記連続シートを送り出す際の搬送速度値を調整する送り出し装置と、を有することを特徴とする吸収性物品の包装体の製造装置である。
本実施形態に係る吸収性物品の包装体の製造方法及び製造装置は、生理用ナプキン1の包装体7pの製造ラインLMで使用される。すなわち、本実施形態では、当該製造方法及び製造装置に基づいて、吸収性物品としての生理用ナプキン1の包装体7pを製造する。
同図3に示すように、先ず、包装シート7が、搬送方向に沿った連続シート7aの形態で搬送方向に搬送されている。そして、搬送方向の合流位置Pjで、搬送方向に製品ピッチP1で並んで搬送されるナプキン1が合流する。なお、この時点では、ナプキン1は完成状態にあり、つまり、図2Aのようにウイング部1w,1wは折り畳まれ、また前述の保護シート6a,6bも取り付け済みの状態にある。また、各ナプキン1は、図3に示すように、同ナプキン1の幅方向(短手方向)が搬送方向を向いた所謂横流れ姿勢で搬送されている。
ナプキン供給系統L1は、上工程から搬送される完成状態のナプキン1を受け取って同ナプキン1の状態を包装に適した状態に変更しながら搬送するナプキン状態変更装置21と、上記の合流位置Pjに配されて、ナプキン1を包装シートの連続シート7aに接合する接合装置25と、を有する。
また、同図5に示すように、上工程から同装置21には、同ナプキン1が製品ピッチP1(第1ピッチに相当)とは異なる搬送ピッチPuで送り込まれる。よって、同ナプキン1の搬送ピッチPuをリピッチして製品ピッチP1に変更する。そして、このような横流れ且つ製品ピッチP1で並んだ状態のナプキン1を、搬送方向の下流に位置する上記の接合装置25へと送る。
図4に示すように、包装シート供給系統L7aは、資材コイル7acから包装シートの連続シート7aを繰り出すための繰り出し装置31と、繰り出されて搬送される包装シートの連続シート7aをナプキン供給系統L1との合流位置Pjへと送り出す送り出し装置45と、を有している。そして、合流位置Pjにおいて既述の接合装置25により、ナプキン1が包装シートの連続シート7aに載置されて接合される。
(1)繰り出し装置31
図4に示すように、繰り出し装置31は、CD方向に沿った回転軸部31aと、回転軸部31aを駆動回転する駆動源としてのサーボモータ(不図示)と、回転軸部31aから繰り出されて搬送される包装シートの連続シート7aの張力を調整するテンションコントローラ35と、を有する。そして、資材コイル7acが中心部に有する貫通孔に上記回転軸部31aが挿入されて当該回転軸部31aで資材コイル7acを支持した状態で、同回転軸部31aが上記の張力値に基づいて駆動回転することにより、資材コイル7acから包装シートの連続シート7aが繰り出される。
図4に示すように、伸長状態調整装置41は、CD方向に沿った回転軸周りに回転する上下一対のニップロール41u,41dと、これら一対のニップロール41u,41dを駆動回転する駆動源としてのサーボモータ(不図示)と、を有する。また、伸長状態調整装置41の下流に位置する送り出し装置45は、CD方向に沿った回転軸周りに回転するロール45rと、このロール45rを駆動回転する駆動源としてのサーボモータ(不図示)と、を有する。
更に、この例では、同装置51が連続シート7aへと接着剤を塗布する搬送方向の位置を、送り出し装置45と撮像装置47の撮像位置P47との間に設定している。よって、合流位置Pjから比較的近い位置で接着剤が連続シート7aに塗布される。そのため、その後の接着剤の位置の搬送方向の変動を小さくすることができて、これにより、接着剤でナプキン1を確実に連続シート7aに接合可能となる。
図4に示すように、加工処理系統Lkでは、ナプキン1が接合された包装シートの連続シート7aが搬送方向に搬送される。そして、同加工処理系統Lkには、折り曲げ装置61と、テープ部材貼り付け装置71と、封止切断装置91とが、搬送方向にこの順番で並んで配されている。
以下、各装置61,71,91について説明する。
折り曲げ装置61は、適宜な板部材やローラー部材等の折り曲げ部材(不図示)をCD方向の両側に有する。そして、図3及び図4に示すように、ナプキン1が接合された包装シートの連続シート7aが、折り曲げ部材の位置を通過する際に、折り曲げ部材が連続シート7aに当接することにより、ナプキン1と一緒に連続シート7aの幅方向の両端部7ae1,7ae2をそれぞれ幅方向の内側へ折り曲げる。そして、これにより、連続シート7aは、ナプキン1と一緒に三つ折り状態にされる。
図9は、テープ部材貼り付け装置71の概略側面図である。
テープ部材貼り付け装置71は、三つ折り状態の連続シート7aの搬送経路に外周面72sを対向させつつCD方向に沿った回転軸周りに回転可能な回転ドラム72(回転体に相当)と、回転ドラム72を駆動回転する駆動源としてのサーボモータ(不図示)と、を有する。そして、この回転ドラム72の外周面72sには、吸気などで吸着力が発生していて、これにより、同外周面72sには、回転方向Dc72に製品ピッチP1で複数のテープ部材8,8…が並んだ状態で保持されている。そして、回転ドラム72の回転により各テープ部材8が三つ折り状態の連続シート7aと対向する対向位置P7a(所定位置に相当)へ送られて同位置P7aを通過する際に、各テープ部材8の接着剤に基づいて、各テープ部材8が連続シート7aに接着して、これにより、回転ドラム72の外周面72sから連続シート7aへとテープ部材8が引き渡される。
そして、その場合には、三つ折り状態の連続シート7aの伸長状態も変化し得て、その結果、前述の目標伸長倍率Msで伸長された状態から変化してしまう。すると、回転ドラム72よりも搬送方向の上流側の位置において、連続シート7aの図柄Gの搬送方向のピッチが、製品ピッチP1からずれてしまい得て、同じくナプキン1の並ぶピッチも、製品ピッチP1からずれてしまい得る。そして、このような場合には、同期信号に基づいて、テープ部材8を、連続シート7a上の目標位置(適正位置)に接着しようとしても、当該目標位置から同テープ部材8はずれてしまい得る。
図10は、封止切断装置91の概略側面図である。なお、同図10中には、同装置91の一部拡大図を併記している。
既述のように、封止切断装置91は、三つ折り状態の連続シート7aにおいて搬送方向に隣り合うナプキン1,1同士の間の部分7an、すなわち、連続シート7aにおいてナプキン1が存在しないナプキン非存在部分7anに熱溶着で一対の封止部7j,7jを形成するとともに、一対の封止部7j,7j同士の間の位置で連続シート7aを切断して、これにより、ナプキン1の包装体7pを生成する。
かかる封止切断装置91は、CD方向に沿った回転軸回りに回転可能な上下一対のロール91u,91dと、これら一対のロール91u,91dを駆動回転する駆動源としてのサーボモータ(不図示)と、を有する。
図11は、第1変形例の製造ラインLMの概略側面図である。
前述の実施形態(図4)との主な相違点は、図11に示すように、包装シート供給系統L7aにおける伸長状態調整装置41のニップロール41u,41dと送り出し装置45のロール45rとの間の位置、より詳しくは、撮像位置P47と送り出し装置45のロール45rとの間の位置に一対のニップロール43u,43dが追設されている点にある。そして、これ以外の構成は、概ね前述の実施形態と同じである。よって、以下では、この相違点について主に説明し、同様の構成については同じ符号を付してその説明については省略する。
よって、上記の撮像位置P47では、連続シート7aの伸長状態は概ね変化せずにほぼ一定に維持される。そして、これにより、撮像装置47は、連続シート7aの撮像を安定して行うことができて、その結果、位置のずれ量の情報及び中心間隔の大きさのずれ量の情報の精度向上を図れる。
図12は、第2変形例の製造ラインLMの概略側面図である。
前述の実施形態(図4)との主な相違点は、同図12に示すように、(1)繰り出し装置31,31が二つ設けられていること、及び、(2)搬送方向における繰り出し装置31の回転軸部31aとダンサーロール35dとの間の位置に、資材継ぎ装置33及び蓄積装置34が配置されていることの2点にある。そして、これら以外の構成は、概ね前述の実施形態と同じである。よって、以下では、これらの相違点について主に説明し、同様の構成については同じ符号を付してその説明については省略する。
但し、これら二つの繰り出し装置31,31は、交互に切り替えて使用される。すなわち、一方の繰り出し装置31が包装シートの連続シート7aを繰り出している間は、他方の繰り出し装置31は概ね待機状態にあり、そして、一方の繰り出し装置31の包装シートの連続シート7aが無くなりそうになったら、これに代えて、待機状態の他方の繰り出し装置31が包装シートの連続シート7aの繰り出し動作を開始する。
そして、このようにすれば、先行の連続シート7aと後行の連続シート7aとの接続における連続性は、レジマークM1の並び状態についても概ね担保される。そして、これにより、先行の連続シート7aと後行の連続シート7aとの境界においても、伸長状態調整装置41は、伸長状態の調整を安定して行うことができ、また、送り出し装置45は、搬送速度値の調整を安定して行うことができる。
以上、本発明の実施形態について説明したが、上記の実施形態は、本発明の理解を容易にするためのものであり、本発明を限定して解釈するためのものではない。また、本発明は、その趣旨を逸脱することなく、変更や改良され得るとともに、本発明にはその等価物が含まれるのはいうまでもない。例えば、以下に示すような変形が可能である。
また、上述の実施形態では、同図7に示すように、連続シート7aには、表示要素としてのレジマークM1とは別に、第2表示要素としてマークM2が印刷されていて、同マークM2を目印M2として用いてテープ部材貼り付け装置71及び封止切断装置91を制御していた。しかし、何等これに限らない。例えば、マークM2に代えて、レジマークM1を目印M2に兼用して上記装置71,91を制御しても良い。すなわち、請求項1に係る「表示要素」が、請求項3乃至5に係る「第2表示要素」を兼ねても良いし、更には、表示要素の一部が、第2表示要素を兼ねても良い。
2 トップシート、3 吸収体、4 バックシート、
5a 接着剤、5b 接着剤、6a 保護シート、6b 保護シート、
7 包装シート、7Lg 長辺部分、7S 短辺部分、
7a 包装シートの連続シート、
7ac 資材コイル、7ae 繰り出し先端部、7ae1 端部、7ae2 端部、
7an 非存在部分、7j 封止部、
7p 包装体、
8 テープ部材、
21 ナプキン状態変更装置(向き変更装置、ピッチ変更装置)、
22 回転ドラム、23 保持パッド、23s 保持面、
25 接合装置、26 回転ドラム、26s 外周面、
31 繰り出し装置、31a 回転軸部、
33 資材継ぎ装置、34 蓄積装置、
35 テンションコントローラ、35d ダンサーロール、
41 伸長状態調整装置、41u ニップロール、41d ニップロール、
43u ニップロール、43d ニップロール、
45 送り出し装置、45r ロール、
47 撮像装置、48 制御部、
51 接着剤塗布装置、
61 折り曲げ装置、
71 テープ部材貼り付け装置、72 回転ドラム(回転体)、
81 撮像装置、82 制御部、
91 封止切断装置、91u 上ロール、91uc カッター刃、91up 凸部、
91d 下ロール、91dp 凸部、91dc 凸部、
LM 製造ライン、
CV 搬送装置、
L1 ナプキン供給系統、L7a 包装シート供給系統、Lk 加工処理系統、
Lb 折り線、
G 図柄、IL イラスト、
M1 レジマーク(表示要素)
M2 目印(マーク、第2表示要素)、
Pj 合流位置、P7a 対向位置、
Pc 位置、
C22 回転軸、C23 軸、C26 回転軸、P47 撮像位置、
Claims (11)
- 包装シートによって吸収性物品が包装されてなる包装体を製造する方法であって、
第1ピッチで複数の前記吸収性物品を搬送する第1搬送工程と、
前記包装シートの連続シートを前記吸収性物品との合流位置へ搬送方向に搬送する第2搬送工程と、
前記合流位置において前記連続シートに前記吸収性物品を接合する接合工程と、を有し、
前記連続シートには、非伸長状態において前記第1ピッチよりも小さい中心間隔で表示要素が前記搬送方向に並んでおり、
前記第2搬送工程は、
前記第1ピッチからの前記表示要素の前記中心間隔の大きさのずれ量の情報を取得し、前記中心間隔の大きさのずれ量の情報に基づいて伸長状態調整装置が前記連続シートの伸長状態を調整する伸長状態調整工程と、
前記連続シート上における前記第1ピッチに基づく基準位置からの前記表示要素の位置のずれ量の情報を取得し、前記位置のずれ量の情報に基づいて、前記合流位置へ向けて前記連続シートを送り出し装置が送り出す際の搬送速度値を調整する搬送速度値調整工程と、を有することを特徴とする吸収性物品の包装体の製造方法。 - 請求項1に記載の吸収性物品の包装体の製造方法であって、
前記合流位置よりも前記搬送方向の下流側の位置を前記連続シートが通過する際に、折り曲げ装置が、前記吸収性物品と一緒に前記連続シートの幅方向の両端部をそれぞれ内側へ折り曲げることにより、前記連続シートを三つ折り状態にする三つ折り工程を有することを特徴とする吸収性物品の包装体の製造方法。 - 請求項2に記載の吸収性物品の包装体の製造方法であって、
前記三つ折り状態の前記連続シートを前記搬送方向に搬送する第3搬送工程を有し、
前記三つ折り状態の前記連続シートは、前記吸収性物品に対応させて前記搬送方向に並ぶ複数の第2表示要素を有し、
前記第3搬送工程は、
前記三つ折り状態の前記連続シート上における前記第1ピッチに基づく基準位置からの前記第2表示要素の位置のずれ量の情報を取得する第2位置ずれ量情報取得工程と、
前記三つ折り状態の前記連続シートが前記搬送方向の所定位置を通過する際に、前記三つ折り状態の前記連続シートにテープ部材貼り付け装置がテープ部材を貼り付けることにより、前記連続シートを前記三つ折り状態に固定する固定工程と、を有し、
前記テープ部材貼り付け装置は、前記テープ部材を回転体の外周面に保持しながら前記回転体が回転することにより、前記テープ部材を前記所定位置へと送り出し、
前記テープ部材を前記所定位置へと送り出すタイミングを、前記第1ピッチで前記連続シートを処理するための同期信号が示すタイミングから、前記ずれ量の情報に基づいてずらすことを特徴とする吸収性物品の包装体の製造方法。 - 請求項2に記載の吸収性物品の包装体の製造方法であって、
前記三つ折り状態の前記連続シートを前記搬送方向に搬送する第3搬送工程を有し、
前記三つ折り状態の前記連続シートは、前記吸収性物品に対応させて前記搬送方向に並ぶ複数の第2表示要素を有し、
前記第3搬送工程は、
前記三つ折り状態の前記連続シート上における前記第1ピッチに基づく基準位置からの前記第2表示要素の位置のずれ量の情報を取得する第2位置ずれ量情報取得工程と、
前記三つ折り状態の前記連続シートに一対の封止部を封止切断装置が形成しつつ、前記一対の封止部同士の間の位置で前記連続シートを前記封止切断装置が切断することにより、前記包装体を生成する生成工程と、を有し、
前記生成工程では、前記封止切断装置が前記封止部を形成するタイミング及び前記連続シートを切断するタイミングを、前記第1ピッチで前記連続シートを処理するための同期信号が示すタイミングから、前記ずれ量の情報に基づいてずらすことを特徴とする吸収性物品の包装体の製造方法。 - 請求項2乃至4の何れかに記載の吸収性物品の包装体の製造方法であって、
前記三つ折り工程では、前記折り曲げ装置が前記連続シートにおける前記幅方向の2カ所に設定された折り線で前記幅方向の両端部をそれぞれ内側へ折り曲げることによって、前記連続シートは三つ折り状態にされ、
前記連続シートにおける前記折り線同士の間の位置に前記第2表示要素が設けられており、
前記第2位置ずれ量情報取得工程でなされる前記第2表示要素の位置のずれ量の情報の取得は、前記三つ折り状態の前記連続シートの前記第2表示要素を、撮像装置で撮像することに基づいてなされることを特徴とする吸収性物品の包装体の製造方法。 - 請求項1乃至5の何れかに記載の吸収性物品の包装体の製造方法であって、
前記接合工程での前記吸収性物品と前記連続シートとの接合は、接着剤によってなされ、
前記表示要素の位置のずれ量の情報の取得、及び前記中心間隔の大きさのずれ量の情報の取得は、撮像装置が、前記搬送方向の所定の撮像位置で前記連続シートの前記表示要素を撮像することに基づいてなされ、
前記搬送方向における前記撮像位置と前記合流位置との間の位置で、接着剤塗布装置が前記接着剤を前記連続シートに塗布することを特徴とする吸収性物品の包装体の製造方法。 - 請求項1乃至6の何れかに記載の吸収性物品の包装体の製造方法であって、
資材コイルから繰り出される前記連続シートを先行の連続シートとした場合に、前記先行の連続シートに、別の資材コイルから繰り出される後行の連続シートの繰り出し先端部を接続する接続工程を有し、
前記接続工程では、前記先行の連続シートの前記表示要素における所定位置と、前記後行の連続シートの前記表示要素において前記所定位置に相当する位置との間の前記搬送方向のずれ量が前記第1ピッチの±5%以内に収まるように位置合わせしながら、前記先行の連続シートに、前記後行の連続シートを接続することを特徴とする吸収性物品の包装体の製造方法。 - 請求項1乃至7の何れかに記載の吸収性物品の包装体の製造方法であって、
前記第1搬送工程では、
長手方向が前記搬送方向に沿った状態で前記搬送方向の上流から搬送される前記吸収性物品を向き変更装置が受け取り、
前記向き変更装置が、受け取った前記吸収性物品の向きを変更することにより、前記吸収性物品の前記長手方向と交差する短手方向が前記搬送方向に沿った状態にし、
前記短手方向が前記搬送方向に沿った状態の前記吸収性物品を、前記連続シートとの合流位置の方へ搬送することを特徴とする吸収性物品の包装体の製造方法。 - 請求項1乃至8の何れかに記載の吸収性物品の包装体の製造方法であって、
前記第1搬送工程では、
前記第1ピッチとは異なる搬送ピッチで前記搬送方向の上流から搬送される前記吸収性物品をピッチ変更装置が受け取り、
前記ピッチ変更装置が、前記受け取った前記吸収性物品の搬送ピッチを前記第1ピッチに変更して、前記吸収性物品を前記搬送方向に搬送することを特徴とする吸収性物品の包装体の製造方法。 - 請求項1乃至9の何れかに記載の吸収性物品の包装体の製造方法であって、
前記伸長状態調整工程では、前記伸長状態調整装置が、前記位置のずれ量の情報に基づいても、前記連続シートの伸長状態を調整することを特徴とする吸収性物品の包装体の製造方法。 - 包装シートによって吸収性物品が包装されてなる包装体を製造する装置であって、
第1ピッチで複数の前記吸収性物品を搬送する第1搬送装置と、
前記包装シートの連続シートを前記吸収性物品との合流位置へ搬送方向に搬送する第2搬送装置と、
前記合流位置において前記連続シートに前記吸収性物品を接合する接合装置と、を有し、
前記連続シートには、非伸長状態において前記第1ピッチよりも小さい中心間隔で表示要素が前記搬送方向に並んでおり、
前記第2搬送装置は、
前記第1ピッチからの前記表示要素の前記中心間隔の大きさのずれ量の情報を取得し、前記中心間隔の大きさのずれ量の情報に基づいて前記連続シートの伸長状態を調整する伸長状態調整装置と、
前記連続シート上における前記第1ピッチに基づく基準位置からの前記表示要素の位置のずれ量の情報を取得し、前記位置のずれ量の情報に基づいて、前記合流位置へ向けて前記連続シートを送り出す際の搬送速度値を調整する送り出し装置と、を有することを特徴とする吸収性物品の包装体の製造装置。
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PCT/JP2016/059830 WO2017168496A1 (ja) | 2016-03-28 | 2016-03-28 | 吸収性物品の包装体の製造方法、及び製造装置 |
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JP7085324B2 (ja) * | 2017-08-30 | 2022-06-16 | ユニ・チャーム株式会社 | 包装体製造方法、及び、包装体製造装置 |
EP3914212A1 (en) | 2019-01-23 | 2021-12-01 | The Procter & Gamble Company | Packaged feminine hygiene pad product adapted for discreet carry and access, and manufacturing process |
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JP2003521339A (ja) * | 2000-02-01 | 2003-07-15 | ザ、プロクター、エンド、ギャンブル、カンパニー | 可変ピッチ長を有する材料の同時前進ウェブの位相を一致させるための位置整合システム |
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JP2010105688A (ja) * | 2008-10-30 | 2010-05-13 | Ckd Corp | Ptpシート製造装置 |
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JP3373611B2 (ja) * | 1993-09-20 | 2003-02-04 | 花王株式会社 | 使い捨てパンツ型おむつの製造方法 |
JP3167569B2 (ja) * | 1995-02-23 | 2001-05-21 | 花王株式会社 | 生理用ナプキンの個別包装品及びその製造方法 |
CN1095646C (zh) * | 1995-12-29 | 2002-12-11 | 金伯利-克拉克环球有限公司 | 具有可对位图像的一次性吸湿制品的制造方法 |
US5818719A (en) * | 1995-12-29 | 1998-10-06 | Kimberly-Clark, Worldwide, Inc. | Apparatus for controlling the registration of two continuously moving layers of material |
AU5803898A (en) * | 1997-12-19 | 1999-07-12 | Procter & Gamble Company, The | Registration system for phasing simultaneously advancing webs of material havingvariable pitch lengths |
IT1320195B1 (it) * | 2000-05-23 | 2003-11-26 | Fameccamica Data S P A | Confezione per articoli igienico-sanitari e relativo procedimento difabbricazione. |
DE10127278A1 (de) * | 2001-06-05 | 2002-12-12 | Winkler & Duennebier Ag | Hygieneprodukt sowie Verfahren und Vorrichtung zu seiner Herstellung |
US7047852B2 (en) * | 2001-10-24 | 2006-05-23 | Kimberly-Clark Worldwide, Inc. | Feedforward control system for an elastic material |
JP4587914B2 (ja) * | 2005-08-31 | 2010-11-24 | 花王株式会社 | 吸収性物品の製造方法 |
JP5631876B2 (ja) * | 2009-06-23 | 2014-11-26 | 株式会社瑞光 | シートの搬送速度制御方法、着用物品の製造方法、及び着用物品の製造装置 |
JP5707467B2 (ja) * | 2013-10-18 | 2015-04-30 | ユニ・チャーム株式会社 | 吸収性物品の製造装置、及び製造装置の改造方法 |
JP5895107B1 (ja) * | 2015-06-29 | 2016-03-30 | ユニ・チャーム株式会社 | シート固定方法、及び、シート固定装置 |
-
2016
- 2016-03-28 EP EP16896716.4A patent/EP3437597A4/en not_active Withdrawn
- 2016-03-28 CN CN201680084104.2A patent/CN108882995B/zh active Active
- 2016-03-28 JP JP2016549533A patent/JP6026070B1/ja active Active
- 2016-03-28 WO PCT/JP2016/059830 patent/WO2017168496A1/ja active Application Filing
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JPH03226411A (ja) * | 1990-01-22 | 1991-10-07 | Zuikou:Kk | ナプキン自動連続製造装置 |
JP2003521339A (ja) * | 2000-02-01 | 2003-07-15 | ザ、プロクター、エンド、ギャンブル、カンパニー | 可変ピッチ長を有する材料の同時前進ウェブの位相を一致させるための位置整合システム |
JP2005080827A (ja) * | 2003-09-08 | 2005-03-31 | Oji Paper Co Ltd | 吸収性物品の製造方法 |
JP2010105688A (ja) * | 2008-10-30 | 2010-05-13 | Ckd Corp | Ptpシート製造装置 |
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Also Published As
Publication number | Publication date |
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EP3437597A4 (en) | 2019-04-24 |
CN108882995B (zh) | 2019-12-13 |
EP3437597A1 (en) | 2019-02-06 |
JPWO2017168496A1 (ja) | 2018-04-05 |
JP6026070B1 (ja) | 2016-11-16 |
CN108882995A (zh) | 2018-11-23 |
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