WO2010047303A1 - 吸収性物品の製造方法 - Google Patents

吸収性物品の製造方法 Download PDF

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Publication number
WO2010047303A1
WO2010047303A1 PCT/JP2009/067996 JP2009067996W WO2010047303A1 WO 2010047303 A1 WO2010047303 A1 WO 2010047303A1 JP 2009067996 W JP2009067996 W JP 2009067996W WO 2010047303 A1 WO2010047303 A1 WO 2010047303A1
Authority
WO
WIPO (PCT)
Prior art keywords
region
predetermined
ultrasonic
continuum
absorbent article
Prior art date
Application number
PCT/JP2009/067996
Other languages
English (en)
French (fr)
Inventor
山本　広喜
Original Assignee
ユニ・チャーム株式会社
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 ユニ・チャーム株式会社 filed Critical ユニ・チャーム株式会社
Priority to EP09822000.7A priority Critical patent/EP2351545B1/en
Priority to CN2009801418125A priority patent/CN102196791B/zh
Priority to BRPI0914449A priority patent/BRPI0914449A2/pt
Publication of WO2010047303A1 publication Critical patent/WO2010047303A1/ja

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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
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15707—Mechanical treatment, e.g. notching, twisting, compressing, shaping
    • A61F13/15739—Sealing, e.g. involving cutting
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B29C65/083—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil
    • B29C65/086—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil using a rotary anvil
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B29C65/083—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil
    • B29C65/087—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil using both a rotary sonotrode and a rotary anvil
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7858—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus characterised by the feeding movement of the parts to be joined
    • B29C65/7879—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus characterised by the feeding movement of the parts to be joined said parts to be joined moving in a closed path, e.g. a rectangular path
    • B29C65/7882—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus characterised by the feeding movement of the parts to be joined said parts to be joined moving in a closed path, e.g. a rectangular path said parts to be joined moving in a circular path
    • B29C65/7885—Rotary turret joining machines, i.e. having several joining tools moving around an axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7858—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus characterised by the feeding movement of the parts to be joined
    • B29C65/7888—Means for handling of moving sheets or webs
    • B29C65/7894—Means for handling of moving sheets or webs of continuously moving sheets or webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/21—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being formed by a single dot or dash or by several dots or dashes, i.e. spot joining or spot welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/22—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being in the form of recurring patterns
    • B29C66/223—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being in the form of recurring patterns being in the form of a triangle wave or of a sawtooth wave, e.g. zigzagged
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/23—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations
    • B29C66/232—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations said joint lines being multiple and parallel, i.e. the joint being formed by several parallel joint lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81427—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81433—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81463—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single joint
    • B29C66/81465—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single joint one placed behind the other in a single row in the feed direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/822—Transmission mechanisms
    • B29C66/8221—Scissor or lever mechanisms, i.e. involving a pivot point
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/822—Transmission mechanisms
    • B29C66/8226—Cam mechanisms; Wedges; Eccentric mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
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    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8324—Joining or pressing tools pivoting around one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8351—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws
    • B29C66/83511—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws jaws mounted on rollers, cylinders or drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8351—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws
    • B29C66/83511—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws jaws mounted on rollers, cylinders or drums
    • B29C66/83517—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws jaws mounted on rollers, cylinders or drums said rollers, cylinders or drums being hollow
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9161—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux
    • B29C66/91641—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux the heat or the thermal flux being non-constant over time
    • B29C66/91643—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux the heat or the thermal flux being non-constant over time following a heat-time profile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9161—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux
    • B29C66/91651—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux by controlling or regulating the heat generated by Joule heating or induction heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9161—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux
    • B29C66/91651—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux by controlling or regulating the heat generated by Joule heating or induction heating
    • B29C66/91653—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux by controlling or regulating the heat generated by Joule heating or induction heating by controlling or regulating the voltage, i.e. the electric potential difference or electric tension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9161—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux
    • B29C66/91651—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux by controlling or regulating the heat generated by Joule heating or induction heating
    • B29C66/91655—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux by controlling or regulating the heat generated by Joule heating or induction heating by controlling or regulating the current intensity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/924—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/9241—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force or the mechanical power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/924—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/9241—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force or the mechanical power
    • B29C66/92441—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force or the mechanical power the pressure, the force or the mechanical power being non-constant over time
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/929—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools characterized by specific pressure, force, mechanical power or displacement values or ranges
    • B29C66/9292—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools characterized by specific pressure, force, mechanical power or displacement values or ranges in explicit relation to another variable, e.g. pressure diagrams
    • B29C66/92921—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools characterized by specific pressure, force, mechanical power or displacement values or ranges in explicit relation to another variable, e.g. pressure diagrams in specific relation to time, e.g. pressure-time diagrams
    • 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
    • A61F2013/15821—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing
    • A61F2013/15861—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing for bonding
    • A61F2013/15869—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing for bonding with ultrasonic energy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B29C2793/009—Shaping techniques involving a cutting or machining operation after shaping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/36—Bending and joining, e.g. for making hollow articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/82—Testing the joint
    • B29C65/8253—Testing the joint by the use of waves or particle radiation, e.g. visual examination, scanning electron microscopy, or X-rays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/95—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94
    • B29C66/959—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 characterised by specific values or ranges of said specific variables
    • B29C66/9592—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 characterised by specific values or ranges of said specific variables in explicit relation to another variable, e.g. X-Y diagrams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/48—Wearing apparel
    • B29L2031/4871—Underwear
    • B29L2031/4878—Diapers, napkins

Definitions

  • the present invention relates to a method for manufacturing an absorbent article including a front waistline region, a back waistline region, and a crotch region between the front waistline region and the back waistline region.
  • An absorbent article such as a disposable diaper includes a front waistline region, a rear waistline region facing the front waistline region, and a crotch region between the front waistline region and the rear waistline region.
  • joining step a step of joining the continuum of the front waistline region and the continuum of the rear waistline region.
  • an ultrasonic bonding apparatus is used in the bonding process.
  • the ultrasonic bonding apparatus includes an anvil roll that supports a continuum in the front waistline region and a continuum in the rear waistline region while rotating in the conveying direction, and a predetermined region corresponding to a bonding region between the front waistline region and the rear waistline region. And an ultrasonic horn that applies ultrasonic vibration to a predetermined region, and an ultrasonic vibrator that applies ultrasonic vibration to the ultrasonic horn.
  • the ultrasonic horn is in the transport direction (hereinafter, MD direction) of the continuum in the front waistline region and the continuum in the rear waistline region. It is formed longer than the length of the junction region in the orthogonal direction (hereinafter referred to as CD direction).
  • JP-A-6-341966 (page 2-3, FIGS. 1 to 3)
  • the ultrasonic horn presses the predetermined area toward the anvil roll
  • the ultrasonic horn tilts with respect to the anvil roll, that is, the ultrasonic horn cannot press one end side in the CD direction in the predetermined area. there were.
  • this invention aims at provision of the manufacturing method of the absorbent article which can detect reliably whether the defect generate
  • the present invention has the following features.
  • the first feature of the present invention is that a front waistline region (front waistline region 20A), a rear waistline region (rear waistline region 20B), and a crotch region (inseam) between the front waistline region and the rear waistline region. 30), and the front waistline region and the rear waistline region after overlapping the continuous body of the front waistline region and the continuous body of the rear waistline region being conveyed
  • the continuum of the front waistline region and the continuum of the rear waistline region are joined by an ultrasonic joining device (for example, the ultrasonic joining device 100) in a predetermined region corresponding to the joining region (joining region 40).
  • Step A bonding step and step B (first determination step) for outputting a first predetermined signal indicating a defective state when it is determined that the output signal of the ultrasonic bonding apparatus does not satisfy the first prescribed condition.
  • step C second determining step of outputting a second predetermined signal indicating a failure state.
  • the manufacturing method of the absorbent article which can detect reliably whether the defect generate
  • FIG. 1 is a perspective view of an absorbent article 1 according to the first embodiment.
  • FIG. 2 is a perspective view of the ultrasonic bonding apparatus 100 according to the first embodiment.
  • FIG. 3 is a side view of the ultrasonic bonding apparatus 100 according to the first embodiment (a view taken in the direction of arrow A in FIG. 2).
  • FIG. 4 is a diagram illustrating a predetermined region 40A of the continuous body 10 corresponding to the bonding region 40 of the absorbent article 1 according to the first embodiment.
  • FIG. 5 is a schematic view showing a method for manufacturing an absorbent article according to the first embodiment.
  • FIG. 6 is a graph showing an output signal of the ultrasonic bonding apparatus 100 according to the first embodiment.
  • FIG. 7 is an enlarged view showing a predetermined region 40A of the continuous body 10 corresponding to the bonding region 40 of the absorbent article 1 according to the first embodiment.
  • FIG. 8 is a perspective view showing an ultrasonic bonding apparatus 100A according to the second embodiment.
  • FIG. 9 is a side view showing the ultrasonic bonding apparatus 100A according to the second embodiment (viewed in the direction of arrow B in FIG. 8).
  • FIG. 10 is a graph showing an output signal of the ultrasonic bonding apparatus 100A according to the second embodiment.
  • FIG. 1 is a perspective view of an absorbent article 1 according to the first embodiment.
  • the absorbent article 1 includes a front waistline region 20A, a rear waistline region 20B facing the front waistline region 20A, and a crotch region 30 positioned between the front waistline region 20A and the rear waistline region 20B. And a joining region 40 located on the left and right sides of the front waistline region 20A and the rear waistline region 20B, and a leg circumference region 50 located on the left and right sides of the crotch region 30.
  • the front waistline region 20A and the rear waistline region 20B are extensible in the conveying direction (hereinafter referred to as MD direction) of the continuous body of the front waistline region 20A and the continuous body of the rear waistline region 20B (hereinafter simply referred to as “continuous body 10”).
  • MD direction conveying direction
  • continuous body 10 continuous body 10
  • the front waistline region 20A and the back waistline region 20B may have stretchability in the MD direction by providing the fit gather 2, and the continuum 10 itself is formed of a stretchable sheet. May have extensibility in the MD direction.
  • the crotch region 30 has extensibility in a direction orthogonal to the MD direction (hereinafter, CD direction).
  • CD direction a direction orthogonal to the MD direction
  • the crotch region 30 may have extensibility in the CD direction by providing the leg gathers 3, and the extensibility in the CD direction by the continuum 10 itself being formed of a sheet having extensibility. You may have.
  • the joining region 40 is a region where the front waistline region 20A and the back waistline region 20B are joined.
  • the leg periphery region 50 is a region where the front waistline region 20A and the back waistline region 20B are opened.
  • FIG. 2 is a perspective view of the ultrasonic bonding apparatus 100 according to the first embodiment.
  • FIG. 3 is a side view of the ultrasonic bonding apparatus 100 according to the first embodiment (a view taken in the direction of arrow A in FIG. 2).
  • FIG. 4 is a diagram illustrating a predetermined region 40A of the continuous body 10 corresponding to the bonding region 40 of the absorbent article 1 according to the first embodiment.
  • the ultrasonic bonding apparatus 100 includes an anvil roll 110, an ultrasonic horn 120, an ultrasonic vibrator 130, and a guide roll 140.
  • the anvil roll 110 rotates in the MD direction and conveys the continuous body 10 in the MD direction while supporting the continuous body 10.
  • a pair of protrusions 111 and 111 ′ are provided so as to face the predetermined region 40A of the continuous body 10 corresponding to the bonding region 40 of the absorbent article 1.
  • the predetermined region 40 ⁇ / b> A of the continuous body 10 is a boundary where the continuous body 10 is cut, that is, the ultrasonic horn 120 cooperates with the protrusions 111 and 111 ′ provided on the anvil roll 110.
  • a region where the continuous body 10 is sandwiched is shown.
  • the distance between the pair of protrusions 111 and the other pair of protrusions 111 ′ corresponds to the distance D (see FIG. 2) between the predetermined regions 40 ⁇ / b> A of the continuum 10. That is, the pair of protrusions 111 and 111 ′ is provided at a position that is 1 ⁇ 2 of the diameter of the anvil roll 110. Note that the arrangement interval and the number of the pair of protrusions 111 and 111 ′ are appropriately selected according to the diameter of the anvil roll 110.
  • the ultrasonic horn 120 presses the predetermined region 40A of the continuum 10 corresponding to the bonding region 40 of the absorbent article 1 toward the anvil roll 110 side, and the protrusions 111 and 111 ′.
  • the ultrasonic vibration is applied to the predetermined region 40A of the continuous body 10 by sandwiching the continuous body 10 in cooperation with the above.
  • the ultrasonic horn 120 is fixed to a pressure arm 150 that adjusts the height of the ultrasonic horn 120 through a booster 160 that amplifies the ultrasonic amplitude.
  • the ultrasonic horn 120 is connected to the ultrasonic transducer 130 via the booster 160.
  • the ultrasonic horn 120 contacts the entire predetermined region 40A of the continuum 10.
  • the ultrasonic horn 120 is based on the output of at least one of a first predetermined signal or a second predetermined signal, which will be described later, and at least one of pressure (contact pressure) or inclination when contacting the predetermined region 40A of the continuum 10. Adjust one.
  • the pressure when the ultrasonic horn 120 is in contact with the predetermined region 40A of the continuous body 10 is low, the pressure is adjusted to be high.
  • the pressure when the ultrasonic horn 120 is in contact with the predetermined region 40A of the continuum 10 is high, the pressure is adjusted low.
  • the ultrasonic horn 120 adjusts the inclination when the one end side 41a in the CD direction in the predetermined area 40A is weakly pressed or when the one end side 41a is strong, so that one end side in the CD direction in the predetermined area 40A is adjusted.
  • the balance between 41a and the other end 41b (see FIG. 4) is adjusted.
  • the ultrasonic vibrator 130 generates ultrasonic vibration and applies the generated ultrasonic vibration to the ultrasonic horn.
  • the ultrasonic vibrator 130 is fixed to the pressure arm 150 via a booster 160 that amplifies the ultrasonic amplitude.
  • the guide roll 140 is provided with a first guide roll 140A for guiding the continuous body 10 between the anvil roll 110 and the ultrasonic horn 120, and ultrasonic vibration is applied to a predetermined region 40A of the continuous body 10. And a second guide roll 140B for guiding the continuous body 10 to the next process.
  • a monitoring device 200 for example, a camera that monitors the predetermined region 40A of the continuous body 10 guided from the second guide roll 140B is provided (FIG. 2). reference).
  • the monitoring device 200 includes a monitoring unit 210 positioned above the continuum 10 being transported and an illumination unit 220 positioned below the continuum 10 being transported.
  • the monitoring unit 210 monitors (photographs) the continuum 10 being conveyed (for example, a continuum in the front waistline region 20A and a continuum in the rear waistline region 20B).
  • the illumination unit 220 illuminates the continuum 10 being transported so that the monitoring unit 210 can easily monitor the continuum 10 being transported.
  • the anvil roll 110 rotates in accordance with the conveyance of the continuous body 10. As the anvil roll 110 rotates, the protrusions 111 and 111 ′ also rotate.
  • the ultrasonic horn 120 applies ultrasonic vibration generated by the ultrasonic vibrator 130 to a predetermined region 40A of the continuum 10 by sandwiching the continuum 10 in cooperation with the protrusions 111 and 111 '. Specifically, the ultrasonic vibration is converted from electric energy by the ultrasonic vibrator 130. After the amplitude of the converted ultrasonic vibration is amplified via the booster 160, the ultrasonic vibration is converted into longitudinal vibration in the radial direction of the anvil roll 110 by the ultrasonic horn 120. The ultrasonic vibration is applied to the predetermined region 40 ⁇ / b> A of the continuum 10 when the tip of the ultrasonic horn 120 on the anvil roll 110 side cooperates with the protrusion 111 to sandwich the continuum 10.
  • the ultrasonic bonding apparatus 100 can join the continuous body of the front waistline region 20A and the continuous body of the back waistline region 20B.
  • the details of the configuration and operation of the ultrasonic bonding apparatus 100 according to the first embodiment are known techniques, and are described, for example, in Japanese Patent Laid-Open No. 5-15551 filed by the present applicant.
  • FIG. 5 is a schematic view showing a method for manufacturing an absorbent article according to the first embodiment.
  • the absorbent article manufacturing method includes a member placing step, a leg periphery forming step, a folding step, a joining / first joining state determining step, a second joining state determining step, and a cutting. At least a process and a discharge process.
  • each member is placed on a continuous body (for example, a continuous body of outer sheets).
  • a gather for example, a continuous body of outer sheets.
  • Each member is a gather (fit gather 2 and leg gather 3), a waterproof sheet, an absorber, a top sheet (not shown), etc., for example.
  • leg circumference formation process In the leg circumference formation process, the leg circumference area 50 (for example, leg hole) is formed in the continuous body 10 on which each member is placed by the cut roll 300 after the member placement process. To do.
  • leg circumference area 50 for example, leg hole
  • the ultrasonic horn 120 of the ultrasonic bonding apparatus 100 that continuously outputs output signals to be described later contacts the entire predetermined region 40A of the continuum 10.
  • FIG. 6 is a graph showing an output signal of the ultrasonic bonding apparatus 100 according to the first embodiment.
  • the first specified condition indicates that the output signal of the ultrasonic bonding apparatus 100 is a value within a predetermined range.
  • the predetermined range indicates a range from an intermediate setting to a high setting in which the output signal of the ultrasonic bonding apparatus 100 exceeds a preset low setting.
  • the first specified condition indicates that the output signal of the ultrasonic bonding apparatus 100 is 40 to 80%.
  • the ultrasonic bonding apparatus 100 is used when the current, voltage, or power of the output signal becomes a value outside a predetermined range (for example, 40% or less or 80% or more) within a predetermined period. , It is determined that the output signal does not satisfy the first specified condition.
  • the predetermined period means that the ultrasonic horn 120 is inserted into the predetermined region 40A of the continuous body 10 by sandwiching the continuous body 10 in cooperation with the projections 111 and 111 ′ provided on the anvil roll 110. The period required for applying ultrasonic vibration is shown.
  • the period (A period) in which the current, voltage, or power of the output signal satisfies a predetermined range is shorter than the predetermined period (B period). Is determined that the output signal does not satisfy the first specified condition (NG), and the first predetermined signal is output.
  • the ultrasonic bonding apparatus 100 determines that the output signal has the first specified condition. Is determined to be satisfied.
  • the period (A period) in which the current, voltage, or power of the output signal satisfies a predetermined range is longer than the predetermined period (B period). Is determined that the output signal satisfies the first specified condition (OK).
  • FIG. 7 is an enlarged view showing a predetermined region 40A of the continuous body 10 corresponding to the bonding region 40 of the absorbent article 1 according to the first embodiment.
  • the monitoring device 200 determines a defective state when it is determined that the bonding area in the predetermined region 40A of the continuum 10 does not satisfy the second prescribed condition.
  • the second predetermined signal shown is output.
  • the second specified condition is that a predetermined bonding area in the predetermined region 40A of the continuum 10 (for example, 14% or more with respect to the predetermined region 40A (the bonding area of the predetermined region 40A is 14.25 cm 2 2 cm 2 or more)) and a bonding range in the predetermined region 40A (for example, a range from the one end side 41a to the other end side 41b in the CD direction in the predetermined region 40A).
  • the monitoring device 200 has a bonding area in the predetermined region 40 ⁇ / b> A of the continuous body 10 when the bonding area in a part of the predetermined region 40 ⁇ / b> A of the continuous body 10 is equal to or smaller than the predetermined area or out of the bonding range. Is determined not to satisfy the second specified condition.
  • the monitoring device 200 determines that the bonding area in the predetermined region 40A of the continuous body 10 satisfies the second specified condition when the bonding area in a part of the predetermined region 40A of the continuous body 10 is equal to or larger than the predetermined area or within the bonding range. Judge that it satisfies.
  • the ultrasonic horn 120 of the ultrasonic bonding apparatus 100 is in contact with the predetermined region 40A of the continuum 10 based on the output of at least one of the first predetermined signal or the second predetermined signal. At least one of pressure or slope can be adjusted.
  • (4-6) Cutting Step In the cutting step, after the joining state determination step, the cutting device 500 cuts the predetermined region 40A of the continuous body 10 corresponding to the joining region 40 of the absorbent article 1 in the CD direction, thereby absorbing the absorbent. Article 1 (see FIG. 1) is formed.
  • the continuous body 10 transported after the joining step is transported in a state where the continuous body in the front waistline region 20A and the continuous body in the rear waistline region 20B are joined.
  • the continuous body of the front waistline region 20A and the back waistline region 20B are continuous between the joining step and the joining state determining step, between the joining state determining step and the cutting step, and between the cutting step and the discharging step. It is transported in a state where the body is joined.
  • the first bonding state determination step and the second bonding state determination step by performing the first bonding state determination step and the second bonding state determination step, it can be determined whether the output signal of the ultrasonic bonding apparatus 100 satisfies the first specified condition, and It can be determined whether or not the bonding area in the predetermined region 40A of the continuum 10 satisfies the second specified condition. For this reason, since the output signal of the ultrasonic bonding apparatus 100 and the bonding area in the predetermined area 40A of the continuum 10 can be monitored, when monitoring only the output signal of the ultrasonic bonding apparatus 100, or in the predetermined area 40A Compared with the case where only the area is monitored, it is possible to reliably detect whether or not a defect has occurred in the joining state of the predetermined region 40A of the continuous body 10.
  • the conventional technique has a problem that the ultrasonic horn 120 is overlooked with respect to the anvil roll 110 and it is difficult to detect the occurrence of a defect in the joined state. Thereby, one end side in the CD direction in the predetermined region 40A was not adhered, and a manufacturing defect of the absorbent article 1 occurred.
  • the ultrasonic horn 120 is tilted with respect to the anvil roll 110, it is overlooked that the ultrasonic horn 120 is tilted with respect to the anvil roll 110.
  • the ultrasonic horn 120 is not inclined with respect to the anvil roll 110, the pressure condition is not insufficient even when the pressure condition between the ultrasonic horn 120 and the protrusions 111 and 111 ′ is insufficient. It is possible to instantaneously detect whether or not a defect has occurred in the joining state of the predetermined region 40A of the continuum 10 without overlooking the fact that it is being performed.
  • the discharging process is performed after the cutting process, whereby the absorbent article 1 in which a defect has occurred in the bonding state of the predetermined region can be discharged, and manufacturing defects of the absorbent article 1 can be reliably prevented.
  • the ultrasonic horn 120 calculates at least one of the pressure and the inclination when contacting the predetermined region 40A of the continuum 10 based on the output of at least one of the first predetermined signal and the second predetermined signal. In order to adjust, the manufacture defect of the absorbent article 1 can be reduced.
  • FIG. 8 is a perspective view showing an ultrasonic bonding apparatus 100A according to the second embodiment.
  • FIG. 9 is a side view showing the ultrasonic bonding apparatus 100A according to the second embodiment (viewed in the direction of arrow B in FIG. 8).
  • the ultrasonic bonding apparatus 100A includes a support base 710, a rotating disk 720, a drum 730, a clamping unit 740, and a guide roll 750.
  • the support base 710 includes a support base 711 that is fixed on the foundation of the production line, and a support frame 712 that is erected vertically from the support base 711.
  • the rotating disc 720 is provided on the front side disc surface (the front side in FIG. 8) of the support frame 712.
  • the rotary disk 720 rotates about a rotation center shaft 780 (see FIG. 9) that is rotatable with respect to the support frame 712 via a bearing (not shown) or the like.
  • the drum 730 is provided concentrically with the rotary disk 720.
  • the drum 730 is a cylindrical body that rotates together with the rotating disk 720.
  • the continuous body 10 is wound around a part of the outer peripheral surface of the drum 730 (upper part in the drawing).
  • the drum 730 is configured by six arc-shaped divided pieces 730A divided into six equal parts along the circumferential direction of the drum 730.
  • the arc-shaped divided piece 730A is attached to the rotating disk 720 via a stay (not shown).
  • a through-hole 731 through which an ultrasonic horn 741A of a fixed arm 741 described later can pass is formed in the arc-shaped divided piece 730A.
  • the drum 730 corresponds to the size of the absorbent article 1 (for example, each product size such as S, M, and L), and the absorbent article 1 is replaced by a small diameter, medium diameter, large diameter drum, or the like. It can correspond to each product size.
  • the clamping unit 740 is composed of six clamping units 740 that are provided radially on the back surface of the rotating disk 720 (the back side in FIG. 8).
  • the clamping unit 740 has a fixed arm 741 and a swing arm 742.
  • the clamping unit 740 is provided so as to be slidable along the radial direction of the drum 730. That is, as described above, the mounting position of the fixed arm 741 and the fixed arm 741 is changed and the mounting position of the holding unit 740 is also changed according to the outer diameter of the drum 730 mounted on the rotary disk 720. .
  • the fixed arm 741 is provided on the inner peripheral side of the drum 730.
  • the fixed arm 741 rotates together with the rotating disk 720 and the drum 730.
  • the fixed arm 741 is provided with an ultrasonic horn 741A that oscillates ultrasonic waves.
  • the ultrasonic horn 741 ⁇ / b> A is in contact with the continuous body 10 by passing through the through-hole 731 formed in the drum 730 and projecting from the outer peripheral surface of the drum 730.
  • the ultrasonic horn 741 ⁇ / b> A contacts the entire predetermined area 40 ⁇ / b> A of the continuous body 10 corresponding to the bonding area 40 of the absorbent article 1.
  • the oscillating arm 742 is provided so as to be able to oscillate at a position facing the fixed arm 741 with the drum 730 interposed therebetween.
  • the swing arm 742 swings (opens and closes) by the cam mechanism 743 according to the rotational position of the drum 730.
  • the swing arm 742 rotates together with the rotary disk 720 and the drum 730 in the same manner as the fixed arm 741.
  • the swing arm 742 is provided with an anvil 742A that holds the entire predetermined region 40A of the continuous body 10 in cooperation with the ultrasonic horn 741A.
  • the anvil 742A comes into contact with the continuous body 10 when the swing arm 742 swings toward the drum 730 (continuous body 10). Note that the anvil 742A contacts the entire predetermined region 40A of the continuum 10. Thereby, the continuous body 10 is sandwiched between the fixed arm 741 and the swing arm 742.
  • the guide roll 750 follows the pair of first guide rolls 750A that guide the continuous body 10 onto the drum 730 and the continuous body 10 in which ultrasonic vibration is applied to a predetermined region 40A of the continuous body 10. And a second guide roll 750B that leads to the process.
  • the predetermined region 40A of the continuum 10 corresponding to the bonding region 40 of the absorbent article 1 guided from the second guide roll 750B.
  • a monitoring device 200 (not shown in FIGS. 8 and 9; see FIGS. 2 and 4) is provided.
  • the ultrasonic horn 741A and the anvil 742A contact (oppose) each other with the predetermined region 40A of the continuum 10 interposed therebetween when the swing arm 742 is closed according to the rotational position of the drum 730.
  • the ultrasonic horn 741 ⁇ / b> A and the anvil 742 ⁇ / b> A apply ultrasonic vibration to a predetermined region of the continuous body 10 corresponding to the bonding region 40 of the absorbent article 1.
  • the ultrasonic bonding apparatus 100A can join the continuous body of the front waistline region 20A and the continuous body of the rear waistline region 20B.
  • Details of the configuration and operation of the ultrasonic bonding apparatus 100A according to the second embodiment are known techniques, and are described in, for example, Japanese Patent Application No. 2005-212149 filed by the present applicant.
  • the absorbent article manufacturing method includes a member placing step, a leg periphery forming step, a folding step, a joining / first joining state determination step, and a second joining state determination step, It has a cutting process and a discharge process at least.
  • the ultrasonic horn 741A and the anvil 742A are in contact with the entire predetermined region 40A of the continuous body 10.
  • the ultrasonic horn 741A and the anvil 742A output an output signal described later while being in contact with the entire predetermined region 40A of the continuum 10.
  • FIG. 10 is a graph showing an output signal of the ultrasonic bonding apparatus 100A according to the second embodiment.
  • the ultrasonic bonding apparatus 100A when it is determined that the output signal of the ultrasonic bonding apparatus 100A does not satisfy the first specified condition, the ultrasonic bonding apparatus 100A outputs a first predetermined signal indicating a defective state.
  • the ultrasonic bonding apparatus 100A when the peak value of the output signal power does not reach a predetermined value (preset power (for example, 70% or more)) within a predetermined period, It is determined that the output signal does not satisfy the first specified condition. On the other hand, the ultrasonic bonding apparatus 100A determines that the output signal satisfies the first specified condition when the peak value of the power of the output signal reaches the predetermined value within the predetermined period.
  • a predetermined value preset power (for example, 70% or more)
  • the ultrasonic bonding apparatus 100A when the power amount of the output signal does not reach a predetermined value (preset power amount J (for example, 70J)) within a predetermined period, It is determined that the output signal does not satisfy the first specified condition. On the other hand, the ultrasonic bonding apparatus 100A determines that the output signal satisfies the first specified condition when the power amount of the output signal reaches a predetermined value within a predetermined period.
  • a predetermined value for example, 70J
  • the ultrasonic bonding apparatus 100A determines that the output signal is output when the output signal power profile does not match a predetermined profile (a preset profile) within a predetermined period. 1 Determine that the specified conditions are not met. On the other hand, the ultrasonic bonding apparatus 100A determines that the output signal satisfies the first specified condition when the power profile of the output signal substantially matches the predetermined profile within the predetermined period.
  • the application of ultrasonic vibration may be terminated, and the power profile of the output signal is substantially equal to the predetermined profile for a preset time. If they match, the application of ultrasonic vibration may be terminated.
  • the ultrasonic horn 741A is used when the first prescribed condition is not satisfied in the first joining state determination step (that is, when a joining state failure is detected) within a predetermined period in which the joining step described above is performed. Stops applying ultrasonic vibrations to the predetermined region 40A of the continuum 10 after a predetermined period, releases the contact with the predetermined region 40A, and outputs a first predetermined signal.
  • the ultrasonic horn 741A satisfies the first prescribed condition in the first joining state determination step within a predetermined period in which the joining step described later is performed (that is, when the joining state failure is not detected).
  • the first prescribed condition is satisfied, the application of ultrasonic vibration to the predetermined region 40A of the continuum 10 is stopped or the contact with the predetermined region 40A is released.
  • the same operations and effects as in the first embodiment can be obtained.
  • the peak value of the output signal power, the output signal power amount, and the output signal power profile can be monitored, it is possible to more reliably detect whether or not a defect has occurred in the joining state of the predetermined region 40A of the continuum 10. It becomes possible.
  • the embodiment of the present invention can be modified as follows.
  • the ultrasonic bonding apparatus is not limited to the ultrasonic bonding apparatus 100 described in the first embodiment or the ultrasonic bonding apparatus 100A described in the second embodiment.
  • any device can be used as long as it can apply ultrasonic vibration to the predetermined region 40A of the continuous body 10 corresponding to the bonding region 40.
  • the present invention can reliably detect whether or not a defect has occurred in the bonding state of the predetermined region corresponding to the bonding region of the continuous body, for example, a disposable diaper in which the front waistline region and the rear waistline region are bonded in advance. It can use suitably for manufacture.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Biomedical Technology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Epidemiology (AREA)
  • Manufacturing & Machinery (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

　前胴回り領域と後胴回り領域との接合領域に対応する所定領域の接合状態に不良が発生したか否かを確実に検出できる吸収性物品の製造方法を提供する。 　本発明に係る吸収性物品の製造方法は、搬送中の前胴回り領域２０Ａの連続体及び後胴回り領域２０Ｂの連続体を重ね合わせた後、前胴回り領域２０Ａと後胴回り領域２０Ｂとの接合領域４０に対応する連続体１０の所定領域４０Ａにおいて、超音波接合装置１００によって、該前胴回り領域２０Ａの連続体と該後胴回り領域２０Ｂの連続体とを接合する工程Ａと、超音波接合装置１００の出力信号が第１規定条件を満たしていないと判定された場合に、不良状態を示す第１所定信号を出力する工程Ｂと、所定領域内の接合面積が第２規定条件を満たしていないと判定された場合に、不良状態を示す第２所定信号を出力する工程Ｃとを有する。

Description

吸収性物品の製造方法
　本発明は、前胴回り領域と、後胴回り領域と、該前胴回り領域と該後胴回り領域との間の股下領域とを具備する吸収性物品の製造方法に関する。
　使い捨ておむつ等の吸収性物品は、前胴回り領域と、前胴回り領域に対向する後胴回り領域と、該前胴回り領域と該後胴回り領域との間の股下領域とを具備する。
　このような吸収性物品の製造方法には、搬送中の前胴回り領域の連続体及び後胴回り領域の連続体が重ね合わされ後、前胴回り領域と後胴回り領域との接合領域に対応する所定領域において、該前胴回り領域の連続体と該後胴回り領域の連続体とを接合する工程（以下、接合工程）が含まれている。
　従来から、接合工程では、超音波接合装置が使用される。超音波接合装置は、搬送方向に向かって回転しながら前胴回り領域の連続体及び後胴回り領域の連続体を支持するアンビルロールと、前胴回り領域と後胴回り領域との接合領域に対応する所定領域をアンビルロール側に向けて押圧するとともに、所定領域に超音波振動を付与する超音波ホーンと、超音波ホーンに超音波振動を与える超音波振動子とを備える。
　超音波ホーンは、前胴回り領域の連続体と後胴回り領域の連続体とを確実に接合するために、前胴回り領域の連続体及び後胴回り領域の連続体の搬送方向（以下、ＭＤ方向）に直交する方向（以下、ＣＤ方向）における接合領域の長さよりも長く形成されている。
　このような接合工程の後、前胴回り領域の連続体と後胴回り領域の連続体との接合状態を監視する方法が知られている（例えば、特許文献１参照）。この方法によれば、超音波振動子に流れる電流を測定することによって、接合領域における接合状態に不良（異常）が発生したか否かを検出できる。
特開平６－３４１９６６号公報（第２－３頁、第１～３図）
　ところで、超音波ホーンが所定領域をアンビルロール側に向けて押圧した際に、超音波ホーンがアンビルロールに対して傾く、すなわち、超音波ホーンが所定領域におけるＣＤ方向の一端側を押圧できないことがあった。
　このため、上述した従来の方法では、超音波ホーンがアンビルロールに対して傾いてしまった場合であっても、電流のみを測定しているため、電流が規定条件に達していると、接合状態に不良が発生していないと判断してしまう。
　従って、接合状態に不良が発生したことを正確に検出できないという問題があった。特に、使い捨ておむつの場合、接合状態に不良が発生してしまうと、パンツ型おむつの製品とならず、例えば、使用中に接合領域がはずれてしまう。
　そこで、本発明は、前胴回り領域と後胴回り領域との接合領域に対応する所定領域の接合状態に不良が発生したか否かを確実に検出できる吸収性物品の製造方法の提供を目的とする。
　上述した課題を解決するため、本発明は、次のような特徴を有している。まず、本発明の第１の特徴は、前胴回り領域（前胴回り領域２０Ａ）と、後胴回り領域（後胴回り領域２０Ｂ）と、該前胴回り領域と該後胴回り領域との間の股下領域（股下領域３０）とを具備する吸収性物品の製造方法であって、搬送中の前記前胴回り領域の連続体及び前記後胴回り領域の連続体を重ね合わせた後、前記前胴回り領域と前記後胴回り領域との接合領域（接合領域４０）に対応する所定領域において、超音波接合装置（例えば、超音波接合装置１００）によって、該前胴回り領域の連続体と該後胴回り領域の連続体とを接合する工程Ａ（接合工程）と、前記超音波接合装置の出力信号が第１規定条件を満たしていないと判定された場合に、不良状態を示す第１所定信号を出力する工程Ｂ（第１判定工程）と、前記所定領域内の接合面積が第２規定条件を満たしていないと判定された場合に、不良状態を示す第２所定信号を出力する工程Ｃ（第２判定工程）とを有することを要旨とする。
　本発明によれば、前胴回り領域と後胴回り領域との接合領域に対応する所定領域の接合状態に不良が発生したか否かを確実に検出できる吸収性物品の製造方法を提供することができる。
図１は、第１実施形態に係る吸収性物品１の斜視図である。 図２は、第１実施形態に係る超音波接合装置１００の斜視図である。 図３は、第１実施形態に係る超音波接合装置１００の側面図（図２のＡ矢視図）である。 図４は、第１実施形態に係る吸収性物品１の接合領域４０に対応する連続体１０の所定領域４０Ａを示す図である。 図５は、第１実施形態に係る吸収性物品の製造方法示す模式図である。 図６は、第１実施形態に係る超音波接合装置１００の出力信号を示すグラフである。 図７は、第１実施形態に係る吸収性物品１の接合領域４０に対応する連続体１０の所定領域４０Ａを示す拡大図である。 図８は、第２実施形態に係る超音波接合装置１００Ａを示す斜視図である。 図９は、第２実施形態に係る超音波接合装置１００Ａを示す側面図（図８のＢ矢視図）である。 図１０は、第２実施形態に係る超音波接合装置１００Ａの出力信号を示すグラフである。
［第１実施形態］
　以下において、本発明に係る第１実施形態について、図面を参照しながら説明する。具体的には、（１）吸収性物品の構成、（２）超音波接合装置の構成、（３）超音波接合装置の動作、（４）吸収性物品の製造方法について、説明する。
　なお、以下の図面の記載において、同一または類似の部分には、同一または類似の符号を付している。ただし、図面は模式的なものであり、各寸法の比率などは現実のものとは異なることに留意すべきである。
　したがって、具体的な寸法などは以下の説明を参酌して判断すべきものである。また、図面相互間においても互いの寸法の関係や比率が異なる部分が含まれていることは勿論である。
（１）吸収性物品の構成
　まず、第１実施形態に係る吸収性物品１の構成について、図面を参照しながら説明する。図１は、第１実施形態に係る吸収性物品１の斜視図である。
　図１に示すように、吸収性物品１は、前胴回り領域２０Ａと、前胴回り領域２０Ａに対向する後胴回り領域２０Ｂと、前胴回り領域２０Ａと後胴回り領域２０Ｂとの間に位置する股下領域３０と、前胴回り領域２０Ａ及び後胴回り領域２０Ｂの左右側部に位置する接合領域４０と、股下領域３０の左右側部に位置する脚周り領域５０とを具備する。
　前胴回り領域２０Ａ及び後胴回り領域２０Ｂは、前胴回り領域２０Ａの連続体及び後胴回り領域２０Ｂの連続体（以下、単に「連続体１０」と称する）の搬送方向（以下、ＭＤ方向）に伸張性を有している。例えば、前胴回り領域２０Ａ及び後胴回り領域２０Ｂは、フィットギャザー２が設けられることによりＭＤ方向に伸張性を有していてもよく、連続体１０そのものが伸張性を有するシートで形成されていることによりＭＤ方向に伸張性を有していてもよい。
　股下領域３０は、ＭＤ方向に対して直交する方向（以下、ＣＤ方向）に伸張性を有している。例えば、股下領域３０は、レッグギャザー３が設けられることによりＣＤ方向に伸張性を有していてもよく、連続体１０そのものが伸張性を有するシートで形成されていることによりＣＤ方向に伸張性を有していてもよい。
　接合領域４０は、前胴回り領域２０Ａと後胴回り領域２０Ｂとが接合される領域である。脚周り領域５０は、前胴回り領域２０Ａと後胴回り領域２０Ｂとが開口する領域である。
（２）超音波接合装置の構成
　次に、第１実施形態に係る超音波接合装置１００の構成について、図面を参照しながら説明する。図２は、第１実施形態に係る超音波接合装置１００の斜視図である。図３は、第１実施形態に係る超音波接合装置１００の側面図（図２のＡ矢視図）である。図４は、第１実施形態に係る吸収性物品１の接合領域４０に対応する連続体１０の所定領域４０Ａを示す図である。
　図２及び図３に示すように、超音波接合装置１００は、アンビルロール１１０と、超音波ホーン１２０と、超音波振動子１３０と、ガイドロール１４０とを備えている。
（２－１）アンビルロール
　アンビルロール１１０は、ＭＤ方向に向かって回転するとともに、連続体１０を支持しながら連続体１０をＭＤ方向に向けて搬送する。アンビルロール１１０の外周１１０Ａには、吸収性物品１の接合領域４０に対応する連続体１０の所定領域４０Ａに対向して配置される一対の突起部１１１，１１１’が設けられている。なお、連続体１０の所定領域４０Ａとは、図４に示すように、連続体１０が切断される境界、すなわち、超音波ホーン１２０がアンビルロール１１０に設けられる突起部１１１，１１１’と協働して連続体１０を挟み込む領域を示す。
　一対の突起部１１１と、他の一対の突起部１１１’との間隔は、連続体１０の所定領域４０Ａ間の距離Ｄ（図２参照）に対応する。つまり、一対の突起部１１１，１１１’は、アンビルロール１１０の径の１／２の位置にそれぞれ設けられる。なお、一対の突起部１１１，１１１’は、アンビルロール１１０の径に応じて、配置間隔や個数が適宜選択される。
（２－２）超音波ホーン
　超音波ホーン１２０は、吸収性物品１の接合領域４０に対応する連続体１０の所定領域４０Ａをアンビルロール１１０側に向けて押圧するとともに、突起部１１１，１１１’と協働して連続体１０を挟み込むことによって連続体１０の所定領域４０Ａに超音波振動を付与する。
　超音波ホーン１２０は、超音波振幅を増幅するブースター１６０を介して、超音波ホーン１２０の高さを調節する加圧アーム１５０に固定されている。超音波ホーン１２０は、ブースター１６０を介して超音波振動子１３０に連結される。超音波ホーン１２０は、連続体１０の所定領域４０Ａ全体に対して接触する。
　なお、超音波ホーン１２０は、後述する第１所定信号又は第２所定信号の少なくとも一方の出力に基づいて、連続体１０の所定領域４０Ａに接触する際の圧力（接触圧）又は傾きの少なくとも１つを調整する。
　例えば、超音波ホーン１２０は、連続体１０の所定領域４０Ａに接触する際の圧力が低い場合には、該圧力を高く調節する。一方、超音波ホーン１２０は、連続体１０の所定領域４０Ａに接触する際の圧力が高い場合には、該圧力を低く調整する。
　また、超音波ホーン１２０は、所定領域４０ＡにおけるＣＤ方向の一端側４１ａが押圧が弱い場合や、該一端側４１ａが強い場合には、傾きを調節して、所定領域４０ＡにおけるＣＤ方向の一端側４１ａ及び他端側４１ｂ（図４参照）のバランスを調節する。
（２－３）超音波振動子
　超音波振動子１３０は、超音波振動を起こすとともに、起こした超音波振動を超音波ホーンに与える。超音波振動子１３０は、超音波振幅を増幅するブースター１６０を介して、加圧アーム１５０に固定されている。
（２－４）ガイドロール
　ガイドロール１４０は、アンビルロール１１０と超音波ホーン１２０との間に連続体１０を導く第１ガイドロール１４０Ａと、連続体１０の所定領域４０Ａに超音波振動が付与された連続体１０を次工程に導く第２ガイドロール１４０Ｂとを有している。
　ここで、超音波接合装置１００のＭＤ方向側には、第２ガイドロール１４０Ｂから導かれた連続体１０の所定領域４０Ａを監視する監視装置２００（例えば、カメラ）が設けられている（図２参照）。
（２－５）監視装置
　監視装置２００は、搬送中の連続体１０の上側に位置する監視部２１０と、搬送中の連続体１０の下側に位置する照明部２２０とを有する。
　監視部２１０は、搬送中の連続体１０（例えば、前胴回り領域２０Ａの連続体や後胴回り領域２０Ｂの連続体）を監視（撮影）する。照明部２２０は、監視部２１０が搬送中の連続体１０を監視しやすくするために、搬送中の連続体１０を照明する。
（３）超音波接合装置の動作
　次に、第１実施形態に係る超音波接合装置の動作について、簡単に説明する。超音波接合装置１００では、連続体１０の搬送に合わせてアンビルロール１１０が回転する。アンビルロール１１０の回転に伴い、突起部１１１，１１１’も回転する。
　超音波ホーン１２０は、突起部１１１，１１１’と協働して連続体１０を挟み込むことによって、連続体１０の所定領域４０Ａに超音波振動子１３０によって起こされた超音波振動を付与する。具体的には、超音波振動は、超音波振動子１３０によって電気エネルギーから変換される。変換された超音波振動は、ブースター１６０を介してその振幅が増幅された後、超音波ホーン１２０によってアンビルロール１１０の径方向への縦振動となる。超音波振動は、超音波ホーン１２０のアンビルロール１１０側の先端部が突起部１１１と協働して連続体１０を挟み込むことによって、連続体１０の所定領域４０Ａに付与される。
　これにより、超音波接合装置１００は、前胴回り領域２０Ａの連続体と後胴回り領域２０Ｂの連続体とを接合できる。なお、第１実施形態に係る超音波接合装置１００の構成や動作などの詳細については、周知の技術であり、例えば、本出願人が出願した特開平５－１５５５１に記載されている。
（４）吸収性物品の製造方法
　次に、第１実施形態に係る吸収性物品の製造方法の構成について、図面を参照しながら説明する。図５は、第１実施形態に係る吸収性物品の製造方法示す模式図である。
　図５に示すように、吸収性物品の製造方法は、部材載置工程と、脚周り形成工程と、折り工程と、接合・第１接合状態判定工程と、第２接合状態判定工程と、切断工程と、排出工程とを少なくとも有する。
（４－１）部材載置工程
　部材載置工程では、連続体（例えば、アウターシートの連続体）上に各部材を載置する。各部材とは、例えば、ギャザー（フィットギャザー２及びレッグギャザー３）、防水シート、吸収体、トップシート（不図示）などである。
（４－２）脚周り形成工程
　脚周り形成工程では、部材載置工程の後に、カットロール３００によって、各部材が載置された連続体１０に脚周り領域５０（例えば、レッグホール）を形成する。
（４－３）折り工程
　折り工程では、脚周り形成工程の後に、折り装置４００によって、脚周り領域５０が形成された連続体１０を連続体１０のＣＤ方向の中心線ＣＬで２つに折る。つまり、折り工程では、前胴回り領域２０Ａの連続体及び後胴回り領域２０Ｂの連続体を重ね合わせる。
（４－４）接合・第１接合状態判定工程
　接合・第１接合状態判定工程では、折り工程の後に、接合工程と、第１接合状態判定工程とが同時に行われる。
（４－４－１）接合工程
　接合工程では、吸収性物品１の接合領域４０に対応する連続体１０の所定領域４０Ａにおいて、超音波接合装置１００によって、前胴回り領域２０Ａの連続体と後胴回り領域２０Ｂの連続体とを接合する。
　接合工程において、後述する出力信号を連続的に出力している状態の超音波接合装置１００の超音波ホーン１２０は、連続体１０の所定領域４０Ａ全体に対して接触する。
（４－４－２）第１接合状態判定工程
　第１接合状態判定工程について、図面を参照しながら説明する。図６は、第１実施形態に係る超音波接合装置１００の出力信号を示すグラフである。
　第１接合状態判定工程では、図６に示すように、超音波接合装置１００は、超音波接合装置１００の出力信号が第１規定条件を満たしていないと判定した場合に、不良状態を示す第１所定信号を出力する。
　なお、第１規定条件は、超音波接合装置１００の出力信号が所定範囲内の値であることを示す。所定範囲とは、超音波接合装置１００の出力信号が、予め設定された低設定を超えた中設定から高設定までの範囲を示す。例えば、第１規定条件は、超音波接合装置１００の出力信号が４０～８０％の値を示す。
　図６に示すように、超音波接合装置１００は、所定期間内に、出力信号の電流、電圧又は電力が、所定範囲外の値（例えば、４０％以下又は８０％以上）となった場合に、該出力信号が第１規定条件を満たしていないと判定する。なお、所定期間とは、超音波ホーン１２０がアンビルロール１１０に設けられる突起部１１１，１１１’と協働して連続体１０を挟み込むことによって、超音波ホーン１２０が連続体１０の所定領域４０Ａに超音波振動を付与するために必要な期間を示す。
　例えば、図６（左側）に示すように、超音波接合装置１００は、出力信号の電流、電圧又は電力が所定範囲を満たしている期間（Ａ期間）が所定期間（Ｂ期間）よりも短い場合には、出力信号が第１規定条件を満たしていない（ＮＧ）と判定し、第１所定信号を出力する。
　一方、超音波接合装置１００は、所定期間内に、出力信号の電流、電圧又は電力が、所定範囲内の値（例えば、４０～８０％）である場合には、出力信号が第１規定条件を満たしていると判定する。
　例えば、図６（右側）に示すように、超音波接合装置１００は、出力信号の電流、電圧又は電力が所定範囲を満たしている期間（Ａ期間）が所定期間（Ｂ期間）よりも長い場合には、出力信号が第１規定条件を満たしている（ＯＫ）と判定する。
（４－５）第２接合状態判定工程
　第２接合状態判定工程について、図面を参照しながら説明する。図７は、第１実施形態に係る吸収性物品１の接合領域４０に対応する連続体１０の所定領域４０Ａを示す拡大図である。
　第２接合状態判定工程では、図７に示すように、監視装置２００は、連続体１０の所定領域４０Ａ内の接合面積が第２規定条件を満たしていないと判定された場合に、不良状態を示す第２所定信号を出力する。例えば、第２規定条件は、予め設定される連続体１０の所定領域４０Ａ内の接合面積（例えば、所定領域４０Ａに対して１４％以上（所定領域４０Ａが１４．２５ｃｍ２に対して接合面積が２ｃｍ２以上））や、所定領域４０Ａ内の接合範囲（例えば、所定領域４０ＡにおけるＣＤ方向の一端側４１ａから他端側４１ｂまでの範囲）を示す。
　図７に示すように、監視装置２００は、連続体１０の所定領域４０Ａ内の一部分における接合面積が所定面積以下又は接合範囲外となった場合に、連続体１０の所定領域４０Ａ内の接合面積が第２規定条件を満たしていないと判定する。一方、監視装置２００は、連続体１０の所定領域４０Ａ内の一部分における接合面積が所定面積以上又は接合範囲内である場合に、連続体１０の所定領域４０Ａ内の接合面積が第２規定条件を満たしていると判定する。
　ここで、超音波接合装置１００の超音波ホーン１２０は、上述したように、第１所定信号又は第２所定信号の少なくとも一方の出力に基づいて、連続体１０の所定領域４０Ａに接触する際の圧力又は傾きの少なくとも１つを調整できる。
（４－６）切断工程
　切断工程では、接合状態判定工程の後に、切断装置５００によって、吸収性物品１の接合領域４０に対応する連続体１０の所定領域４０ＡをＣＤ方向に切断し、吸収性物品１（図１参照）を形成する。
（４－７）排出工程
　排出工程では、切断工程の後に、吸収性物品１のうち、超音波接合装置１００から出力された第１所定信号、又は、監視装置２００から出力された第２所定信号の少なくとも一方に対応する吸収性物品１を排出する。つまり、第１所定信号又は第２所定信号が出力されていない場合には、最終製品の吸収性物品１が形成される。
　ここで、接合工程の後に搬送される連続体１０は、前胴回り領域２０Ａの連続体と後胴回り領域２０Ｂの連続体とが接合された状態で搬送される。例えば、接合工程と接合状態判定工程との間や、接合状態判定工程と切断工程との間、切断工程と排出工程との間などにおいて、前胴回り領域２０Ａの連続体と後胴回り領域２０Ｂの連続体とが接合された状態で搬送される。
　第１実施形態では、第１接合状態判定工程及び第２接合状態判定工程が行われることによって、超音波接合装置１００の出力信号が第１規定条件を満たしているか否かを判定でき、かつ、連続体１０の所定領域４０Ａ内の接合面積が第２規定条件を満たしているか否かを判定できる。このため、超音波接合装置１００の出力信号と連続体１０の所定領域４０Ａ内の接合面積とを監視できるため、超音波接合装置１００の出力信号のみを監視する場合や、所定領域４０Ａ内の接合面積のみを監視する場合と比べて、連続体１０の所定領域４０Ａの接合状態に不良が発生したか否かを確実に検出できる。
　ここで、従来の技術では、超音波ホーン１２０がアンビルロール１１０に対して傾いてしまうと、電流のみを測定しているため、電流が規定条件に達していると、接合状態に不良が発生していないと判断してしまう。
　このため、従来の技術では、超音波ホーン１２０がアンビルロール１１０に対して傾いていることを見逃してしまい、接合状態に不良が発生したことを検出できいという問題があった。これにより、所定領域４０ＡにおけるＣＤ方向の一端側が接着されずに、吸収性物品１の製造不良が発生していた。
　これに対して、第１実施形態では、超音波ホーン１２０がアンビルロール１１０に対して傾いてしまった場合であっても、超音波ホーン１２０がアンビルロール１１０に対して傾いていることを見逃すことなく、連続体１０の所定領域４０Ａの接合状態に不良が発生したか否かを瞬時に検出できる。
　また、超音波ホーン１２０がアンビルロール１１０に対して傾いていないが、超音波ホーン１２０と突起部１１１，１１１’との圧力条件が不足している場合であっても、圧力条件が不足が不足していることを見逃すことなく、連続体１０の所定領域４０Ａの接合状態に不良が発生したか否かを瞬時に検出できる。
　このように、連続体１０の所定領域におけるＣＤ方向の一端側が接着されずに、吸収性物品１の製造不良が発生しまうことを防止できる。
　第１実施形態では、切断工程の後に、排出工程が行われることによって、所定領域の接合状態に不良が発生した吸収性物品１を排出でき、吸収性物品１の製造不良を確実に防止できる。
　第１実施形態では、超音波ホーン１２０が、第１所定信号又は第２所定信号の少なくとも一方の出力に基づいて、連続体１０の所定領域４０Ａに接触する際の圧力又は傾きの少なくとも１つを調整するため、吸収性物品１の製造不良を軽減できる。
［第２実施形態］
　以下において、本発明に係る第２実施形態について、図面を参照しながら説明する。具体的には、（１）超音波接合装置の構成、（２）超音波接合装置の動作、（３）吸収性物品の製造方法、（４）作用・効果について、説明する。なお、上述した第１実施形態に係る超音波接合装置と同一部分には同一の符号を付して、相違する部分を主として説明する。
（１）超音波接合装置の構成
　まず、第２実施形態に係る超音波接合装置１００Ａの構成について、図面を参照しながら説明する。図８は、第２実施形態に係る超音波接合装置１００Ａを示す斜視図である。図９は、第２実施形態に係る超音波接合装置１００Ａを示す側面図（図８のＢ矢視図）である。
　図８及び図９に示すように、超音波接合装置１００Ａは、支持基台７１０と、回転円盤７２０と、ドラム７３０と、挟持ユニット７４０と、案内ロール７５０とを備える。
（１－１）支持基台
　支持基台７１０は、生産ラインの基礎上に固定される支持ベース７１１と、支持ベース７１１から鉛直に立設される支持フレーム７１２とを有する。
（１－２）回転円盤
　回転円盤７２０は、支持フレーム７１２の表側盤面（図８の手前側）に設けられている。回転円盤７２０は、支持フレーム７１２に回転自在な回転中心軸７８０（図９参照）を中心に、ベアリング（不図示）などを介して回転する。
（１－３）ドラム
　ドラム７３０は、回転円盤７２０と同心円上に設けられている。ドラム７３０は、回転円盤７２０と一緒に回転する円筒体である。ドラム７３０の外周面の一部（図面では上部）には、連続体１０が巻き付いている。
　ドラム７３０は、ドラム７３０の周方向に沿って６等分された６つの円弧状分割片７３０Ａによって構成されている。円弧状分割片７３０Ａは、ステー（不図示）を介して回転円盤７２０に取り付けられている。円弧状分割片７３０Ａには、後述する固定アーム７４１の超音波ホーン７４１Ａが通過可能な貫通孔７３１が形成されている。
　なお、ドラム７３０は、吸収性物品１のサイズ（例えば、Ｓ、Ｍ、Ｌなどの各製品サイズ）に対応して、小径、中径、大径ドラムなどが付け替えられることによって、吸収性物品１の各製品サイズに対応できる。
（１－４）挟持ユニット
　挟持ユニット７４０は、回転円盤７２０の裏側盤面（図８の奥側）で放射状に設けられる６つの挟持ユニット７４０によって構成されている。挟持ユニット７４０は、固定アーム７４１と、揺動アーム７４２とを有する。
　挟持ユニット７４０は、ドラム７３０の径方向に沿ってスライド可能に設けられている。すなわち、上述したように、回転円盤７２０に装着されるドラム７３０の外径寸法に応じて、固定アーム７４１及び固定アーム７４１の取付位置が変更されるとともに、挟持ユニット７４０の取付位置も変更される。
（１－４－１）固定アーム
　固定アーム７４１は、ドラム７３０の内周側に設けられている。固定アーム７４１は、回転円盤７２０及びドラム７３０と一緒に回転する。固定アーム７４１には、超音波を発振する超音波ホーン７４１Ａが設けられる。
　超音波ホーン７４１Ａは、ドラム７３０に形成された貫通孔７３１を通過してドラム７３０の外周面から突出することによって連続体１０と接触する。なお、超音波ホーン７４１Ａは、吸収性物品１の接合領域４０に対応する連続体１０の所定領域４０Ａ全体に対して接触する。
（１－４－２）揺動アーム
　揺動アーム７４２は、ドラム７３０を挟んで固定アーム７４１と対向する位置で揺動可能に設けられる。揺動アーム７４２は、カム機構７４３によってドラム７３０の回転位置に応じて揺動（開閉）する。揺動アーム７４２は、固定アーム７４１と同様に、回転円盤７２０及びドラム７３０と一緒に回転する。揺動アーム７４２には、超音波ホーン７４１Ａと協同して連続体１０の所定領域４０Ａ全体を挟持するアンビル７４２Ａが設けられる。
　アンビル７４２Ａは、揺動アーム７４２がドラム７３０（連続体１０）側に揺動することによって、連続体１０と接触する。なお、アンビル７４２Ａは、連続体１０の所定領域４０Ａ全体に対して接触する。これにより、連続体１０は、固定アーム７４１及び揺動アーム７４２に挟持される。
（１―５）案内ロール
　案内ロール７５０は、ドラム７３０上に連続体１０を導く一対の第１案内ロール７５０Ａと、連続体１０の所定領域４０Ａに超音波振動が付与された連続体１０を次工程に導く第２案内ロール７５０Ｂとを有している。
　ここで、超音波接合装置１００ＡのＭＤ方向側には、第１実施形態と同様に、第２案内ロール７５０Ｂから導かれた吸収性物品１の接合領域４０に対応する連続体１０の所定領域４０Ａを監視する監視装置２００（図８及び図９では不図示、図２及び図４参照）が設けられている。
（２）超音波接合装置の動作
　次に、第２実施形態に係る超音波接合装置１００Ａの動作について、簡単に説明する。超音波接合装置１００Ａでは、連続体１０の搬送に合わせて、回転円盤７２０、ドラム７３０及び挟持ユニット７４０（固定アーム７４１及び揺動アーム７４２）が回転する。
　超音波ホーン７４１Ａ及びアンビル７４２Ａは、揺動アーム７４２がドラム７３０の回転位置に応じて閉止状態となった際に、連続体１０の所定領域４０Ａを挟んで互いに接触（対向）する。超音波ホーン７４１Ａ及びアンビル７４２Ａは、吸収性物品１の接合領域４０に対応する連続体１０の所定領域に超音波振動を付与する。
　これにより、超音波接合装置１００Ａは、前胴回り領域２０Ａの連続体と後胴回り領域２０Ｂの連続体とを接合できる。なお、第２実施形態に係る超音波接合装置１００Ａの構成や動作などの詳細については、周知の技術であり、例えば、本出願人が出願した特願２００５－２１２１４９に記載されている。
（３）吸収性物品の製造方法
　次に、第２実施形態に係る吸収性物品の製造方法の構成について説明する。吸収性物品の製造方法は、第１実施形態と同様に、部材載置工程と、脚周り形成工程と、折り工程と、接合・第１接合状態判定工程と、第２接合状態判定工程と、切断工程と、排出工程とを少なくとも有する。
　なお、第２実施形態では、接合・第１接合状態判定工程以外は、第１実施形態と同様であるため、説明を省略する。
（３－１）接合工程
　接合工程では、折り工程の後に、吸収性物品１の接合領域４０に対応する連続体１０の所定領域４０Ａにおいて、超音波接合装置１００Ａによって、前胴回り領域２０Ａの連続体と後胴回り領域２０Ｂの連続体とを接合する。
　接合工程において、超音波ホーン７４１Ａ及びアンビル７４２Ａは、連続体１０の所定領域４０Ａ全体に対して接触する。また、接合工程において、超音波ホーン７４１Ａ及びアンビル７４２Ａは、連続体１０の所定領域４０Ａ全体に接触されている間に、後述する出力信号を出力している。
（３－２）第１接合状態判定工程
　次に、第１接合状態判定工程について、図面を参照しながら説明する。図１０は、第２実施形態に係る超音波接合装置１００Ａの出力信号を示すグラフである。
　図１０に示すように、超音波接合装置１００Ａは、超音波接合装置１００Ａの出力信号が第１規定条件を満たしていないと判定した場合に、不良状態を示す第１所定信号を出力する。
　図１０に示すように、超音波接合装置１００Ａは、所定期間内に、出力信号の電力のピーク値が、所定値（予め設定された電力（例えば、７０％以上））に到達しない場合に、該出力信号が第１規定条件を満たしていないと判定する。一方、超音波接合装置１００Ａは、所定期間内に、出力信号の電力のピーク値が、所定値に到達した場合には、出力信号が第１規定条件を満たしていると判定する。
　また、図１０に示すように、超音波接合装置１００Ａは、所定期間内に、出力信号の電力量が、所定値（予め設定された電力量Ｊ（例えば、７０Ｊ））に到達しない場合に、該出力信号が第１規定条件を満たしていないと判定する。一方、超音波接合装置１００Ａは、所定期間内に、出力信号の電力量が、所定値に到達した場合には、出力信号が第１規定条件を満たしていると判定する。
　さらに、図１０に示すように、超音波接合装置１００Ａは、所定期間内に、出力信号の電力のプロファイルが、所定プロファイル（予め設定されたプロファイル）と一致しない場合に、該出力信号が前記第１規定条件を満たしていないと判定する。一方、超音波接合装置１００Ａは、所定期間内に、出力信号の電力のプロファイルが、所定プロファイルとほぼ一致した場合には、出力信号が第１規定条件を満たしていると判定する。
　ここで、図１０では、超音波振動が連続体１０の所定領域に付与される期間（超音波付与期間）として、出力信号の電力量が所定値に到達した場合に、超音波振動の付与が終了されているが、これに限定されるものではない。
　例えば、出力信号の電力のピーク値が所定値に到達した場合に、超音波振動の付与が終了されてもよく、また、出力信号の電力のプロファイルが、予め設定される時間、所定プロファイルとほぼ一致している場合に、超音波振動の付与が終了されてもよい。
　なお、超音波ホーン７４１Ａは、上述した接合工程を実施する所定期間内に、第１接合状態判定工程にて第１規定条件を満たしていない場合（すなわち、接合状態の不良を検出した場合）には、所定期間後において、連続体１０の所定領域４０Ａへの超音波振動の付与を停止し、所定領域４０Ａとの接触を解除するとともに、第１所定信号を出力する。
　一方、超音波ホーン７４１Ａは、後述する接合工程を実施する所定期間内に、第１接合状態判定工程にて第１規定条件を満たしていた場合（すなわち、接合状態の不良を検出しなかった場合）には、該第１規定条件を満たした際、連続体１０の所定領域４０Ａへの超音波振動の付与の停止、又は、所定領域４０Ａとの接触を解除する。
　第２実施形態では、第１実施形態と同様の作用・効果を得ることができる。特に、出力信号の電力のピーク値、出力信号の電力量及び出力信号の電力のプロファイルを監視できるため、連続体１０の所定領域４０Ａの接合状態に不良が発生したか否かをさらに確実に検出可能となる。
［その他の実施形態］
　上述したように、本発明の実施形態を通じて本発明の内容を開示したが、この開示の一部をなす論述及び図面は、本発明を限定するものであると理解すべきではない。この開示から当業者には様々な代替実施の形態、実施例及び運用技術が明らかとなろう。
　例えば、本発明の実施形態は、次のように変更することができる。具体的には、超音波接合装置としては、第１実施形態で説明した超音波接合装置１００や、第２実施形態で説明した超音波接合装置１００Ａに限定されるものではなく、吸収性物品１の接合領域４０に対応する連続体１０の所定領域４０Ａに超音波振動を付与できる装置であればよいことは勿論である。
　このように、本発明は、ここでは記載していない様々な実施の形態などを含むことは勿論である。したがって、本発明の技術的範囲は、上述の説明から妥当な特許請求の範囲に係る発明特定事項によってのみ定められるものである。
　なお、日本国特許出願第２００８－２７１１２４号（２００８年１０月２１日出願）の全内容が、参照により、本願明細書に組み込まれている。
　本発明は、連続体の接合領域に対応する所定領域の接合状態に不良が発生したか否かを確実に検出できるため、例えば、前胴回り領域と後胴回り領域とが予め接合された使い捨ておむつの製造に好適に用いることができる。

Claims (7)

  1. 　前胴回り領域と、後胴回り領域と、該前胴回り領域と該後胴回り領域との間の股下領域とを具備する吸収性物品の製造方法であって、
    　搬送中の前記前胴回り領域の連続体及び前記後胴回り領域の連続体を重ね合わせた後、前記前胴回り領域と前記後胴回り領域との接合領域に対応する所定領域において、超音波接合装置によって、該前胴回り領域の連続体と該後胴回り領域の連続体とを接合する工程Ａと、
    　前記超音波接合装置の出力信号が第１規定条件を満たしていないと判定された場合に、
    不良状態を示す第１所定信号を出力する工程Ｂと、
    　前記所定領域内の接合面積が第２規定条件を満たしていないと判定された場合に、不良状態を示す第２所定信号を出力する工程Ｃとを有することを特徴とする吸収性物品の製造方法。
  2. 　前記前胴回り領域の連続体と前記後胴回り領域の連続体とを接合した状態で搬送する工程と、
    　前記前胴回り領域の連続体及び前記後胴回り領域の連続体の前記所定領域を、前記前胴回り領域の連続体及び前記後胴回り領域の連続体の搬送方向に交差する方向に切断することによって、前記吸収性物品を形成する工程と、
    　出力された前記第１所定信号又は前記第２所定信号の少なくとも一方に対応する吸収性物品を排出する工程とを更に有することを特徴とする請求項１に記載の吸収性物品の製造方法。
  3. 　前記工程Ａにおいて、前記出力信号を連続的に出力している状態の前記超音波接合装置の超音波ホーンを、前記所定領域全体に対して接触させ、
    　前記工程Ｂにおいて、所定期間内に、前記出力信号の電流、電圧又は電力が、所定範囲外の値となった場合に、該出力信号が前記第１規定条件を満たしていないと判定されることを特徴とする請求項１又は２に記載の吸収性物品の製造方法。
  4. 　前記工程Ａにおいて、前記超音波接合装置の超音波ホーンを、前記所定領域全体に対して接触させ、
    　前記工程Ａにおいて、前記超音波接合装置の超音波ホーンは、前記所定領域全体に接触されている間に、前記出力信号を出力しており、
    　前記工程Ｂにおいて、所定期間内に、前記出力信号の電力のピーク値又は電力量が所定値に到達しない場合、又は、前記出力信号の電力のプロファイルが所定プロファイルと一致しない場合に、該出力信号が前記第１規定条件を満たしていないと判定されることを特徴とする請求項１又は２に記載の吸収性物品の製造方法。
  5. 　前記工程Ｂにおいて、前記所定領域内の一部分における接合面積が所定面積以上である場合に、前記所定領域内の接合面積が前記第２規定条件を満たしていると判定されることを特徴とする請求項１乃至４のいずれか一項に記載の吸収性物品の製造方法。
  6. 　前記第１所定信号又は前記第２所定信号の少なくとも一方の出力に基づいて、前記超音波接合装置の超音波ホーンが前記所定領域に接触する際の圧力又は傾きの少なくとも１つを調整することを特徴とする請求項１乃至５のいずれか一項に記載の吸収性物品の製造方法。
  7. 　前記超音波ホーンは、
    　前記工程Ａを実施する所定期間内に、前記工程Ｂにて前記第１規定条件を満たしていない場合には、前記所定期間後において、前記所定領域への超音波振動の付与を停止し、前記所定領域との接触を解除するとともに、前記第１所定信号を出力し、
    　前記工程Ａを実施する所定期間内に、前記工程Ｂにて前記第１規定条件を満たしていた場合には、該第１規定条件を満たした際、前記所定領域への超音波振動の付与の停止又は前記所定領域との接触の解除を行うことを特徴とする請求項４乃至６のいずれか一項に記載の吸収性物品の製造方法。
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JP5547392B2 (ja) 2014-07-09
EP2351545A4 (en) 2014-04-09
US7887652B2 (en) 2011-02-15
EP2351545A1 (en) 2011-08-03
BRPI0914449A2 (pt) 2018-10-30
CN102196791B (zh) 2013-11-06
AR073835A1 (es) 2010-12-01
EP2351545B1 (en) 2017-02-15
US20100096065A1 (en) 2010-04-22
CN102196791A (zh) 2011-09-21

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