WO2009141871A1 - 抽出バッグの製造方法 - Google Patents

抽出バッグの製造方法 Download PDF

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Publication number
WO2009141871A1
WO2009141871A1 PCT/JP2008/059256 JP2008059256W WO2009141871A1 WO 2009141871 A1 WO2009141871 A1 WO 2009141871A1 JP 2008059256 W JP2008059256 W JP 2008059256W WO 2009141871 A1 WO2009141871 A1 WO 2009141871A1
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WIPO (PCT)
Prior art keywords
extraction bag
sheet
seal
fusing
horizontal
Prior art date
Application number
PCT/JP2008/059256
Other languages
English (en)
French (fr)
Inventor
義之 辻
雅弘 砂田
竹本　智博
義幸 品川
Original Assignee
椿本興業株式会社
株式会社ファブリカトヤマ
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Publication date
Application filed by 椿本興業株式会社, 株式会社ファブリカトヤマ filed Critical 椿本興業株式会社
Priority to PCT/JP2008/059256 priority Critical patent/WO2009141871A1/ja
Publication of WO2009141871A1 publication Critical patent/WO2009141871A1/ja

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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
    • B65B29/00—Packaging of materials presenting special problems
    • B65B29/02—Packaging of substances, e.g. tea, which are intended to be infused in the package
    • B65B29/04—Attaching, or forming and attaching, string handles or tags to tea bags
    • 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
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    • 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
    • B29C65/081—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations having a component of vibration not perpendicular to the welding surface
    • 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
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    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B29C65/743—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc
    • B29C65/7439—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc for continuously and longitudinally welding and severing webs
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    • B29C65/743—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc
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    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B29C65/749—Removing scrap
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    • 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
    • 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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
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    • 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
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    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
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    • 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
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    • 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
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    • 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
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    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • 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
    • B29C66/47—Joining single elements to sheets, plates or other substantially flat surfaces
    • B29C66/472—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially flat
    • 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
    • B29C66/69—General aspects of joining filaments 
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • 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
    • B29C66/81411—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 characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81415—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 characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled
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    • B65B37/08—Supplying or feeding fluent-solid, plastic, or liquid material, or loose masses of small articles, to be packaged by rotary feeders
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    • B65B9/207—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles the web advancing continuously
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    • B65D85/808—Disposable containers or packages with contents which are mixed, infused or dissolved in situ, i.e. without having been previously removed from the package for immersion in the liquid to release part or all of their contents, e.g. tea bags
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    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
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    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
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    • B29K2311/00—Use of natural products or their composites, not provided for in groups B29K2201/00 - B29K2309/00, as reinforcement
    • B29K2311/10—Natural fibres, e.g. wool or cotton
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    • B29L2031/00—Other particular articles
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    • B29L2031/7122—Tea bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
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    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B65B9/2056—Machines for packages of special type or form

Definitions

  • the present invention relates to a method for producing a tetrahedral-shaped extraction bag from a belt-shaped extraction bag sheet and a filling and packaging machine for the extraction bag for carrying out the method.
  • a water-permeable filterable sheet such as non-woven fabric is formed into a flat bag shape, tetrahedron shape bag body, etc. What is used is filled with extraction materials such as tea leaves and attached with a hanging thread with a tag on the outer surface.
  • Patent Document 1 As a sheet for an extraction bag used for manufacturing such an extraction bag, one in which a hanging thread with a tag for one extraction bag is arranged at a predetermined interval in the longitudinal direction of a belt-like water-permeable filterable sheet is known.
  • Patent Document 2 As a sheet for an extraction bag used for manufacturing such an extraction bag, one in which a hanging thread with a tag for one extraction bag is arranged at a predetermined interval in the longitudinal direction of a belt-like water-permeable filterable sheet is known.
  • Patent Document 2 Patent Document 3
  • Patent Document 4 discloses a tea bag manufacturing method in which a fusing indenter and a pressure indenter that crush a cylindrical body formed from a sheet for an extraction bag are moved along the sheet flow using a crank mechanism. Is described.
  • the extraction bag sheet when manufacturing an extraction bag from a strip-shaped extraction bag sheet, the extraction bag sheet can be laterally sealed while traveling at a constant speed, thereby improving the extraction bag production speed. Objective.
  • the present inventor uses the sealing head of the welding fusing device in contact with the extraction bag sheet formed into a cylindrical shape, whether the traveling type or the direct pressing type is used as the sealing head, for the extraction bag at the time of lateral sealing.
  • the sheet with a speed component in the traveling direction and after the formation of the lateral seal, by moving back the travel distance of the extraction bag seat between the lateral seals until the next lateral seal is formed, the above-mentioned It was found that the purpose of can be achieved.
  • the present invention alternately forms the first horizontal seal and the second horizontal seal by alternately fusing and fusing the extraction bag sheet formed into a cylindrical body in a direction crossing each other in a top view.
  • a method of manufacturing an extraction bag in which the contents of a cylindrical body are filled while alternately repeating the formation of a first horizontal seal and the formation of a second horizontal seal, When the horizontal seal is formed, the extraction bag sheet travels at a constant speed, and the seal head in contact with the extraction bag sheet is controlled by a servo motor so that it travels with the extraction bag sheet.
  • a method for manufacturing a tetrahedral extraction bag is provided in which the traveling distance of the extraction bag sheet during the formation of the lateral seal is returned to a position where the sheet is canceled.
  • the present invention is an extraction bag filling packaging machine for producing a tetrahedral extraction bag using an extraction bag sheet, A vertical sealing device formed into a cylindrical body by welding both side edges in the longitudinal direction of the sheet for the extraction bag; Sheet feeding means for running the extraction bag sheet at a constant speed; A lateral seal device that alternately forms first lateral seals and second lateral seals by alternately fusing and fusing extraction bag sheets molded into a cylindrical body in directions intersecting each other when viewed from above; While repeating the formation of the first horizontal seal and the formation of the second horizontal seal alternately, the filling device for filling the inside of the cylindrical body, and the sheet for the extraction bag at a constant speed when each horizontal seal is formed For the extraction bag during the formation of the horizontal seal for each lateral seal formation, the seal head in contact with the extraction bag sheet is controlled by a servo motor so that it travels with the extraction bag sheet.
  • a filling and packaging machine having a drive mechanism for causing a travel distance of a sheet to travel
  • the movement of the seal head of the horizontal seal device for forming the horizontal seal on the sheet for the extraction bag is controlled by the servo motor.
  • the traveling can be continuously performed at a constant speed without stopping the traveling or causing pulsation in the traveling. Therefore, the production speed of the extraction bag can be improved as compared with the conventional method in which the extraction bag sheet is intermittently fed.
  • FIG. 1 is a schematic view of an extraction bag filling and packaging machine 70 according to an embodiment for carrying out the extraction bag manufacturing method of the present invention
  • FIG. 2 is a horizontal sealing device 76 that performs horizontal sealing in the filling and packaging machine 70.
  • FIG. 3 is a side view of the vicinity, and FIG.
  • This filling and packaging machine 70 is a machine for producing a tetrahedral-shaped extraction bag 6 using the extraction bag sheet 5, and is roughly a cylinder 73 having a former guide 72 for guiding the extraction bag sheet 5.
  • a sheet feeding means (feeding roller 74) for causing the extraction bag sheet 5 wound around the cylinder 73 to travel downward at a constant speed, and by welding both side edges in the longitudinal direction of the extraction bag sheet 5 to the cylindrical body
  • the vertical seal device 75 to be formed, and the horizontal seal that alternately forms the first horizontal seal and the second horizontal seal by welding and cutting the sheet for the extraction bag formed in the cylindrical body in a direction crossing each other in a top view.
  • the tea leaves or the like as the contents of the extraction bag are fed into the cylinder 73 by a predetermined amount, and the sheet for the extraction bag And a auger filling device 80 for filling the tea leaves or the like in the interior of the tubular body.
  • an ultrasonic welding fusing device is provided, and a scrap winding means 77 is provided for winding up an unnecessary edge (ear portion) generated when the vertical seal is formed.
  • the welding fusing direction is swung by a predetermined angle, preferably 90 ° around the axis L of the cylindrical body of the extraction bag sheet 5 for each horizontal seal formation, and is shown by a solid line in FIG.
  • One ultrasonic welding fusing device 760 that alternately takes the positions indicated by the broken lines and the positions indicated by the broken lines is provided.
  • This ultrasonic welding fusing device 760 has a seal head 76a having a tapered tip and a presser 78 that flatly crushes an extraction bag sheet formed on a cylindrical body when a horizontal seal is formed.
  • the seal head 76a is a so-called traveling type in which a seal is formed in an arbitrary length by traveling the seal head 76a.
  • a traveling type seal head By using a traveling type seal head, the seal head can be reduced in size and weight, so that it can be easily driven at a high speed and the drive mechanism can be made compact.
  • the presser 78 has a width for forming a horizontal seal, and travels downward together with the extraction bag sheet when the horizontal seal is formed.
  • the seal head 76a is in contact with the extraction bag sheet 5 in a state where the presser 78 flatly crushes the cylindrical body of the extraction bag sheet 5, and in the width direction of the crushed cylindrical body. While traveling, it also travels downward, thereby forming a horizontal seal that maintains a constant traveling speed without stopping traveling downward of the extraction bag seat 5. After the formation of the horizontal seal, the seal head 76a travels back to a position where the downward travel distance of the extraction bag seat 5 during the formation of the horizontal seal is canceled.
  • the seal head 76a when the first horizontal seal is formed, the seal head 76a travels obliquely downward as indicated by an arrow a by combining the above-described width direction and downward movement. Then, after the horizontal seal is formed, the downward travel distance of the extraction bag seat 5 during the formation of the horizontal seal is canceled and returned to the position swung by 90 ° about the axis L as shown by the arrow b. Run. Thereafter, similarly to the first horizontal seal, the seal head travels obliquely downward as indicated by an arrow c to form a second horizontal seal, and then travels back as indicated by an arrow d.
  • the anvil 76b facing the seal head 76a also travels downward as indicated by the arrow a ′ together with the extraction bag sheet 5 when the first horizontal seal is formed, and then forms the first horizontal seal.
  • the travel distance below is canceled and the vehicle travels back as indicated by the arrow b 'to the position swung by 90 ° about the axis L.
  • While forming the second horizontal seal it moves downward as indicated by the arrow c'. Travel and then travel back as indicated by arrow d '. Thereafter, the formation of the first horizontal seal and the formation of the second horizontal seal are repeated.
  • the movement of the above-described lateral sealing device 76 is performed by the drive mechanism shown in FIG. That is, the filling and packaging machine 70 includes a base plate vertical drive servo motor 761 and a base plate 764 that repeats vertical movement by a crank 762 and a link 763 connected to the servo motor 761. Further, the servo motor 770 for 90 ° swing and a 90 ° swing plate 772 connected to the servo motor 770 by a spline shaft 771 are provided. Since the 90 ° swing plate 772 is provided on the base plate 764 described above, the vertical movement is repeated.
  • the seal head 76a travels in the width direction described above, and the back-and-forth movement of the presser 78 that flatly crushes the extraction bag sheet 5 formed in the cylindrical body with respect to the lateral seal position.
  • a horizontal drive servo motor 780 that carries forward and backward movement with respect to the lateral seal position of the anvil 76b. That is, the rotation of the servo motor 780 is transmitted to the cam 782 by the gear 781, and the cam follower 783 driven by the groove formed on the upper surface of the cam 782 swings the link mechanism 784 as shown by the arrow p (FIG. 3).
  • a groove is also formed on the lower surface of the cam 782, and a cam follower 790 driven by the groove swings the link mechanism 791 as indicated by an arrow q (FIG. 3), whereby the seal head 76a is moved in the width direction. Move.
  • the base plate vertical drive servo motor 761, the 90 ° swing servo motor 770, and the horizontal drive servo motor 780 are controlled by a control device (not shown) capable of interlocking drive.
  • a control device capable of interlocking drive.
  • Each rotation speed is controlled by. Therefore, the traveling speed of the seal head 76a, the anvil 76b, and the presser 78 that are in contact with the extraction bag sheet 5 when the lateral seal is formed is completely the same as the extraction bag sheet 5 with respect to the speed component in the traveling direction of the extraction bag sheet 5. It can be controlled at the same speed. Therefore, it is possible to eliminate the occurrence of pulsation or meandering in the traveling speed of the extraction bag sheet 5.
  • a device using heating may be used in addition to a method using ultrasonic waves.
  • the extraction bag sheet 5 to be applied to the extraction bag filling and packaging machine 70 is composed of a long sheet made of a woven fabric, a nonwoven fabric or a laminate thereof for producing an extraction bag, and a thread tag is attached as necessary. Various things can be used.
  • a thread material one formed from a material capable of ultrasonic welding or heat welding including thermoplastic synthetic fibers such as polypropylene and polyethylene can be used, and as a tag, paper, plastic sheet, etc. Can be used.
  • thermoplastic synthetic fibers such as polypropylene and polyethylene
  • tag, paper, plastic sheet, etc. Can be used.
  • water-permeable filter sheet synthetic fibers such as polyester, nylon, polyethylene, and polypropylene, semi-synthetic fibers such as rayon, woven fabrics, nonwoven fabrics, and papers made of natural fibers such as mulberry, Mitsumata, etc.
  • a film having many holes can be used.
  • the arrangement of the tag 2 and the thread material 3 on the water-permeable filter sheet 4 is not particularly limited.
  • the tag 2 is attached to the belt-shaped water-permeable filter sheet 4 like the extraction bag sheet 5 shown in FIG. It is possible to use a sheet that is arranged at a predetermined interval in the longitudinal direction of the sheet 4 and is arranged in a specific rotation pattern so that the long thread material 3 is placed on each tag 2.
  • s1 is a strong seal part between the tag 2 and the thread material 3
  • s2 is a strong seal part between the thread material 3 and the water filterable sheet 4
  • s3 is a weak seal between the thread material 3 and the water filterable sheet 4.
  • the part, s4, is a weak seal part between the tag 2 and the water-permeable filterable sheet 4.
  • the broken line has shown the division
  • the thread material 3 does not form a continuous rotation pattern, and the hanging thread with a tag for one extraction bag is spaced at a predetermined interval in the longitudinal direction of the belt-like water-permeable filterable sheet. It may be arranged in.
  • the extraction bag sheet 5 one wound in a roll shape may be used.
  • the extraction bag filling and packaging machine 70 of the present invention is used as the extraction bag sheet.
  • the manufacturing machine 1 may be used in combination.
  • the extraction bag sheet manufacturing machine 1 shown in FIG. 5 is the extraction bag sheet 5 manufacturing machine shown in FIG. 4, and generally supplies a tag 2 to the peripheral surface of the rotary carrier 10 at predetermined intervals. 20, a thread hooking mechanism 40, a sheet supply device 50 for supplying a water-permeable filterable sheet 4 onto the tag 2 and the thread material 3 on the rotation carrier 10, adhesion between the tag 2 and the thread material 3, It consists of a sealing device 60 for bonding the water filterable sheet 4 or bonding the thread material 3 and the water filterable sheet 4.
  • the rotation carrier 10 is continuously rotated in the direction of the arrow by a servo motor while the manufacturing machine 1 is in operation.
  • the outer periphery of the rotary carrier 10 is divided into a plurality of regions, and two placement sites for the tag 2 are provided close to each divided region.
  • a suction mechanism for the tag 2 is provided at the place where the tag 2 is placed.
  • the rotation carrier 10 is provided with a vertical mechanism for a pin 11 for thread hooking.
  • the tag supply device 20 feeds the tag tape 2t from the tag tape original fabric 2r around which the tab tape 2t is wound, and cuts the tag tape 2t into a tag 2 having a predetermined length, and the tag cut supply device 21 cuts the tag tape 2t.
  • the tag delivery drum 22 moves the tag 2 to the peripheral surface of the rotary carrier 10.
  • the tag cut supply device 21 is provided with a cam mechanism so that the tag 2 can be supplied as fast as possible without loosening the tag tape 2t from the tag tape original fabric 2r to the rotary carrier 10.
  • the tag tape 2t is cut while being swung as indicated by an arrow, and the cut tag 2 is transferred to the tag transfer drum 22.
  • the tag delivery drum 22 rotates at a constant speed, and the tag 2 delivered from the tag cut supply device 21 is carried on the rotation carrier 10 at a predetermined interval.
  • the yarn hooking mechanism 40 adjusts the tension of the yarn material 3 to be substantially constant, and the yarn material 3 so that the yarn material 3 overlaps each tag 2 on the peripheral surface of the rotary carrier 10 in which the tags 2 are arranged at predetermined intervals.
  • the tension adjusting means 410 of the yarn material 3 includes a dancer mechanism 420 and a path length adjustment device 430 downstream thereof.
  • the yarn hooking device 30 moves the threader in a predetermined rotation pattern on the peripheral surface of the rotary carrier 10 by combining two drive crank mechanisms, and the pin for thread hook protruding from the peripheral surface of the rotary carrier 10 11 is threaded.
  • the sheet supply device 50 unwinds the water-permeable filterable sheet 4 from the sheet raw material 4r around which the water-permeable filterable sheet 4 is wound, and the water-permeable filterable sheet 4 is supported on the rotation carrier 10 at a predetermined interval. It supplies so that it may place on the continuous pattern of the tag 2 and the thread material 3 formed on the tag 2.
  • the water-filterable sheet 4 can be fed out by controlling the feed-out speed with a nip drive roller 52 that feeds out the water-filterable sheet 4 with a potentiometer attached to the dancer roller 51 in the middle of the path. Adjust as fast as possible.
  • the sealing device 60 includes first, second, third, and fourth sealing devices 61, 62, 63, and 64.
  • the first sealing device 61 strongly seals the tag 2 and the thread material 3 supported on the rotary carrier 10 before supplying the water-permeable filterable sheet 4 onto the rotary carrier 10, as shown in FIG. A seal portion s1 is formed.
  • the second sealing device 62 supplies the water-permeable filterable sheet 4 onto the rotary carrier 10 and then strongly seals the thread material 3 and the water-permeable filterable sheet 4 to form the seal portion s2 of FIG. .
  • the third sealing device 63 weakly seals the thread material 3 and the water-permeable filter sheet 4 to form a seal part s3 in FIG.
  • the fourth sealing device 64 weakly seals the tag 2 and the water-permeable filter sheet 4 to form a seal part s4 shown in FIG.
  • the sealing means of these sealing devices may be ultrasonic welding or heat welding.
  • the strong seal means that the seal part is firmly sealed to the extent that the seal part does not peel off in the normal use of the extraction bag, and the weak seal can easily peel off the seal part when the extraction bag is used. It means to seal weakly.
  • the first, second, third, and fourth sealing devices 61, 62, 63, and 64 are used with respect to the circumferential surface of the rotary carrier 10 by using a vertical drive servomotor as a drive source. It is preferable to move up and down and to swing back and forth in the rotational direction of the rotary carrier 10 using a swinging servo motor as a drive source and swing as indicated by the arrow shown in FIG. Thereby, optimization of a sealing condition can be aimed at simply.
  • the extraction bag sheet manufacturing machine 1 and the extraction bag filling and packaging machine 70 are combined, the extraction bag sheet 5 fed out by the reference feed roller 71 provided with a servo motor is used. It is preferable to operate the filling and packaging machine 70 in accordance with the speed.
  • FIG. 6 is a perspective view of the extraction bag 6 obtained by combining the extraction bag sheet manufacturing machine 1 and the extraction bag filling and packaging machine 70 as shown in FIG.
  • This extraction bag 6 is a pyramid type extraction bag in which the seals sx and sy in the width direction at the upper and lower end edges are twisted, and the hanging thread made of the thread material 3 at the seal part s2 near the top.
  • One end of the thread and the water-permeable filter sheet 4 are strongly sealed, and the hanging thread and the tag 2 are strongly sealed at the part s1 at the other end of the hanging thread, and the hanging thread and the tag 2 are respectively attached at the parts s3 and s4.
  • the water-permeable filter sheet 4 is weakly sealed.
  • the extraction bag filling and packaging machine 70 of the present invention can take various forms in addition to the above-described embodiments.
  • a traveling welding fusing device having a sealing head 76a with the tip of the extraction bag filling and packaging machine 70 shown in FIG. A direct-press welding / cutting device 760X in which the tip of the head is formed flat in the width of the horizontal seal may be used.
  • each welding fusing device 760A, 760B is provided with two welding fusing devices 760A and 760B that are arranged so that the welding fusing directions intersect in a top view as the horizontal sealing device 76.
  • two welding fusing devices 760A and 760B are used alternately.
  • the seal head 76a is caused to travel obliquely downward as indicated by an arrow a.
  • the travel distance downward of the extraction bag seat 5 during the formation of the first horizontal seal is returned to the cancel position for travel.
  • the second horizontal seal is formed by running the seal head obliquely downward as indicated by arrow c using another welding fusing device 760B, and then the second horizontal seal is formed as indicated by arrow d. During this time, the travel distance for processing the extraction bag sheet 5 is returned to the cancel position and travels.
  • the extraction bag filling and packaging machine 70D shown in FIG. 9 is the same as the extraction bag filling and packaging machine 70C shown in FIG. 8, except that the lateral sealing device 76 includes direct-pressing welding fusing devices 760AX and 760BX.
  • the lateral sealing device 76 includes direct-pressing welding fusing devices 760AX and 760BX.
  • the tip of the seal head is moved forward as indicated by arrows a and c. Then, they are brought into contact with the extraction bag sheet 5 and run downward in the same manner as the extraction bag sheet 5.
  • the filling and packaging machine for the extraction bag of the present invention when one traveling welding fusing device 760 as shown in FIG. 1 is used as the lateral sealing device 76, as shown in FIG.
  • the central axis L2 of the device 760 is disposed obliquely with respect to the welding and fusing direction at the time of horizontal sealing in a top view, and is run in an eight-letter shape, the same as the formation of the first horizontal seal in FIG. You may make it repeat formation of the 2nd horizontal seal of figure (b) alternately.
  • the welding fusing device 760 may be moved back and forth and left and right in a top view, and it is not necessary to swing around the axis L of the cylindrical body of the extraction bag sheet 5.
  • two sets of the presser 78 for flatly crushing the anvil 76b and the extraction bag sheet formed into a cylindrical body at the time of horizontal sealing are arranged so that the welding and fusing directions intersect each other when viewed from above. This eliminates the need to provide a swing mechanism around the axis L in the horizontal seal device.
  • the machine for producing a sheet for an extraction bag of the present invention is useful for continuously producing tea bags such as black tea, green tea and herbs, and extraction bags for dried stock such as dried and dried bonito on a production line.

Abstract

　四面体形状の抽出バッグの製造方法が、筒状体に成形されている抽出バッグ用シート５を、上面視で互いに交差する方向に交互に溶着溶断することにより第１の横シールと第２の横シールを交互に形成すると共に、第１の横シールの形成と第２の横シールの形成を交互に繰り返す間に筒状体の内部に内容物を充填することからなる。各横シールの形成時には、抽出バッグ用シート５が一定速度で走行するように、抽出バッグ用シートと接するシールヘッド７６ａをサーボモータで制御することにより抽出バッグ用シート５と共に走行させ、各横シールの形成毎に、該横シールを形成する間の抽出バッグ用シートの走行距離をキャンセルする位置に戻し走行させる。これにより、帯状の抽出バッグ用シートから抽出バッグを製造するにあたり、抽出バッグ用シートの走行を止めることなく横シールを行い、抽出バッグの生産速度を向上させる。  

Description

抽出バッグの製造方法
　本発明は、帯状の抽出バッグ用シートから四面体形状の抽出バッグを製造する方法及びその方法を実施する抽出バッグ用充填包装機に関する。
　紅茶、緑茶、ハーブ等のティーバッグ、煮干し、鰹節等のだしの抽出バッグとして、不織布等の通水濾過性シートを平袋状、四面体状等の袋体に形成すると共に、その内部に茶葉等の抽出材料を充填し、外表面にタグ付き吊し糸を取り付けたものが使用されている。
　このような抽出バッグの製造に使用する抽出バッグ用シートとしては、抽出バッグ１個分のタグ付吊し糸を、帯状の通水濾過性シートの長手方向に所定間隔で配置したものが知られているが（特許文献１）、抽出バッグ用シートをより高い生産性で製造できるようにするものとして、帯状の通水濾過性シートにタグを該シートの長手方向に所定間隔で配置すると共に、長尺の糸材を各タグに架かるように特定の回旋パターンに配置したものが知られている（特許文献２、特許文献３）。
　そして、このような帯状の抽出バッグ用シートから四面体形状の抽出バッグを製造する方法としては、その対向縁部を互いに接着することにより筒状に成形した後、その筒状体を押し潰して幅方向に溶着溶断する第１の横シールの形成と、それと交差する方向に幅方向に溶着溶断する第２の横シールの形成とを交互に行うと共に、これらの横シールの形成の間に内容物を充填する方法が行われている（特許文献２、特許文献３、特許文献４）。
特開平１０－１５７７０９号公報 特表２００１－５１９７２９号公報 特表２００６－５１０５５０号公報 特開平３－２７５４０９号公報
　しかしながら、従来の抽出バッグの製造方法では、筒状に成形した抽出バッグ用シートから四面体形状の抽出バッグに製袋するための横シール時にシートの走行を止めるため、シート送りが間欠的となり、抽出バッグの生産速度を高めることに限界をきたしていた。なお、特許文献４には、抽出バッグ用シートから形成した筒状体を横一直線状に押し潰す溶断圧子と受圧子を、クランク機構を用いてシートの流れに沿って移動させるティーバッグの製造方法が記載されている。しかしながら、この製造方法は、クランク機構の回転軸を等速回転させるに過ぎないため、シートの流れ方向の溶断圧子と受圧子の速度を一定にすることができず、シートの走行速度に脈動が生じたり、蛇行が生じたりするという不具合があった。
　これに対し、本発明は、帯状の抽出バッグ用シートから抽出バッグを製造するにあたり、抽出バッグ用シートを一定速度で走行させつつ横シールを行えるようにし、抽出バッグの生産速度を向上させることを目的とする。
　本発明者は、筒状に成形した抽出バッグ用シートと接する溶着溶断装置のシールヘッドを、該シールヘッドとして走行式を使用する場合も直押式を使用する場合も、横シール時には抽出バッグ用シートの走行方向の速度成分を持たせて動かし、横シールの形成後、次の横シールの形成までに、その横シールの間の抽出バッグ用シートの走向距離分だけ戻し走向させることにより、上述の目的を達成できることを見出した。
　即ち、本発明は、筒状体に成形されている抽出バッグ用シートを、上面視で互いに交差する方向に交互に溶着溶断することにより第１の横シールと第２の横シールを交互に形成すると共に、
第１の横シールの形成と第２の横シールの形成を交互に繰り返す間に筒状体の内部に内容物を充填する抽出バッグの製造方法であって、
各横シールの形成時に抽出バッグ用シートが一定速度で走行するように、抽出バッグ用シートと接するシールヘッドをサーボモータで制御することにより抽出バッグ用シートと共に走行させ、各横シールの形成毎に、該横シールを形成する間の抽出バッグ用シートの走行距離をキャンセルする位置に戻し走行させる四面体形状の抽出バッグの製造方法を提供する。
　また、本発明は、抽出バッグ用シートを用いて四面体形状の抽出バッグを製造する抽出バッグ用充填包装械であって、
抽出バッグ用シートの長手方向の両側縁部を溶着することにより筒状体に形成する縦シール装置、
抽出バッグ用シートを一定速度で走行させるシート送り手段、
筒状体に成形した抽出バッグ用シートを、上面視で互いに交差する方向に交互に溶着溶断することにより第１の横シールと第２の横シールを交互に形成する横シール装置、
第１の横シールの形成と第２の横シールの形成を交互に繰り返す間に、筒状体の内部に内容物を充填する充填装置、及び
各横シールの形成時に抽出バッグ用シートが一定速度で走行するように、抽出バッグ用シートと接するシールヘッドをサーボモータで制御することにより抽出バッグ用シートと共に走行させると共に、各横シールの形成毎に、該横シールを形成する間の抽出バッグ用シートの走行距離をキャンセルする位置に戻し走行させる駆動機構を有する充填包装機を提供する。
　本発明の抽出バッグの製造方法ないし抽出バッグ用充填包装機によれば、抽出バッグ用シートに横シールを形成する横シール装置のシールヘッドの動きをサーボモータで制御するので、横シールの形成時にその走行を停止させたり、走行に脈動を生じさせたりせず、一定速度で連続走行させることができる。したがって、抽出バッグ用シートを間欠送りさせていた従来法に比して、抽出バッグの生産速度を向上させることができる。
抽出バッグ用充填包装機の模式図である。 抽出バッグ用充填包装機の横シール装置付近の側面図である。 横シール装置の上面視の動作説明図である。 抽出バッグ用シートの平面図である。 抽出バッグ用シートの製造機械と抽出バッグ用充填包装機とを組み合わせた機械構成の模式図である。 抽出バッグの斜視図である。 抽出バッグ用充填包装機の模式図である。 抽出バッグ用充填包装機の模式図である。 抽出バッグ用充填包装機の模式図である。 溶着溶断装置の動作説明図である。
符号の説明
　１　　抽出バッグ用シートの製造機械
　２　　タグ
　２ｒ　タグテープ原反
　２ｔ　タグテープ
　３　　糸材
　３ｒ　糸材原反
　４　　通水濾過性シート
　４ｒ　シート原反
　５　　抽出バッグ用シート
　６　　抽出バッグ
１０　　回転担持体
１１　　ピン
２０　　タグ供給装置
２１　　タグカット供給装置
２２　　タグ受渡ドラム
３０　　糸掛装置
４０　　糸掛機構
 401　　駆動ローラ
 410　　糸材の張力調整手段
 420　　ダンサー機構
 430　　パス長調整装置
５０　　シート供給装置
５１　　ダンサーローラ
５２　　ニップ駆動ローラ
６０　　シール装置
６１　　第１のシール装置
６２　　第２のシール装置
６３　　第３のシール装置
６４　　第４のシール装置
７０　　充填包装機
７１　　基準送りローラ
７２　　フォーマーガイド
７３　　筒体
７４　　送りローラ
７５　　縦シール装置
７６　　横シール装置
７６ａ　シールヘッド
７６ｂ　アンビル
 760,760A,760B,760X　　溶着溶断装置
 761　　ベースプレート上下駆動用サーボモータ
 762　　クランク
 763　　リンク
 764　　ベースプレート
 770　　９０°揺動サーボモータ
 771　　スプライン軸
 772　　９０°揺動プレート
 780　　水平駆動用サーボモータ
 781　　歯車
 782　　カム
 783　　カムフォロア
 784　　リンク機構
 785　　ロッド
 790　　カムフォロア
 791　　リンク機構
７７　　スクラップ巻き取り手段
７８　　押さえ
８０　　オーガ充填装置
ｓ１、ｓ２、ｓ３、ｓ４　　シール部位
　以下、図面を参照しつつ、本発明を具体的に説明する。なお、各図中、同一符号は同一又は同等の構成要素を表している。
　図１は、本発明の抽出バッグの製造方法を実施する一実施例の抽出バッグ用充填包装機７０の模式図であり、図２は、その充填包装機７０において横シールを行う横シール装置７６付近の側面図であり、図３は、横シール装置７６の上面視の動作説明図である。
　この充填包装機７０は、抽出バッグ用シート５を用いて四面体形状の抽出バッグ６を製造する機械であって、概略、抽出バッグ用シート５を案内するフォーマーガイド７２を備えた筒体７３、筒体７３に巻き付けた抽出バッグ用シート５を一定速度で下方に走行させるシート送り手段（送りローラ７４）、抽出バッグ用シート５の長手方向の両側縁部を溶着することにより筒状体に形成する縦シール装置７５、筒状体に形成した抽出バッグ用シートを、上面視で互いに交差する方向に溶着溶断することにより第１の横シールと第２の横シールを交互に形成する横シール装置７６、第１の横シールの形成と第２の横シールの形成を交互に繰り返す間に、抽出バッグの内容物となる茶葉等を筒体７３に所定量ずつ送り込み、抽出バッグ用シート５の筒状体の内部に茶葉等を充填するオーガ充填装置８０を有している。
　縦シール装置７５としては、超音波溶着溶断装置を備えており、縦シール形成時に生じる不要な縁部（耳部）を巻き取るスクラップ巻き取り手段７７を備えている。
　横シール装置７６としては、各横シールの形成毎に、抽出バッグ用シート５の筒状体の軸Ｌを中心に溶着溶断方向が所定角度、好ましくは９０°揺動し、図１において実線で記載した位置と破線で記載した位置を交互にとる一つの超音波溶着溶断装置760を備えている。この超音波溶着溶断装置760は、先端が先細に突出したシールヘッド７６ａと、筒状体に形成されている抽出バッグ用シートを横シールの形成時に平坦に押し潰す押さえ７８とを有する。
　このシールヘッド７６ａは、それを走行させることにより任意の長さにシールを形成する所謂走行式のものである。走行式のシールヘッドを用いることにより、シールヘッドを小型軽量化することができるので、高速で駆動させることが容易となり、また、その駆動機構をコンパクトに構成することが可能となる。
　押さえ７８は、横シールの形成幅を有しており、横シール形成時に、抽出バッグ用シートと共に下方に走行する。シールヘッド７６ａは、押さえ７８が抽出バッグ用シート５の筒状体を平坦に押し潰している状態で、その抽出バッグ用シート５に当接し、その押し潰されている筒状体の幅方向に走行すると共に、下方にも走行し、これにより、抽出バッグ用シート５の下方への走行を停止させることなく、一定の走行速度を維持しつつい横シールを形成する。そして該横シールの形成後、シールヘッド７６ａは、その横シールを形成する間の抽出バッグ用シート５の下方への走行距離をキャンセルする位置に戻し走行する。
　したがって、シールヘッド７６ａのトータルの動きとしては、第１の横シールの形成時には、上述の幅方向と下方の動きの合成により、矢印ａのように斜め下方に走行する。そして、該横シールを形成後、該横シールを形成する間の抽出バッグ用シート５の下方への走行距離をキャンセルすると共に軸Ｌを中心に９０°揺動した位置に矢印ｂのように戻し走行する。その後、第１の横シールと同様に、シールヘッドを矢印ｃのように斜め下方に走行することにより第２の横シールを形成し、その後、矢印ｄのように戻し走行する。この場合、シールヘッド７６ａに対向するアンビル７６ｂも、第１の横シールの形成時には抽出バッグ用シート５と共に矢印ａ’のように下方に走行し、その後、第１の横シールを形成するの間の下方への走行距離をキャンセルすると共に軸Ｌを中心に９０°揺動した位置に矢印ｂ’のように戻し走行し、第２の横シールを形成する間は矢印ｃ’のように下方に走行し、その後矢印ｄ’のように戻し走行する。以降、この第１の横シールの形成と第２の横シールの形成を繰り返す。
　充填包装機７０において、上述の横シール装置７６の動きは、図２に示す駆動機構により行われる。即ち、充填包装機７０は、ベースプレート上下駆動用サーボモータ761と、このサーボモータ761に接続したクランク762とリンク763により上下動を繰り返すベースプレート764を有している。また、９０°揺動用サーボモータ770と、このサーボモータ770とスプライン軸771で接続された９０°揺動プレート772を有している。この９０°揺動プレート772は、上述のベースプレート764上に設けられているため、上下動も繰り返す。
　９０°揺動プレート772上には、シールヘッド７６ａの上述の幅方向の走行と、筒状体に形成されている抽出バッグ用シート５を平坦に押し潰す押さえ７８の横シール位置に対する前後の動きと、アンビル７６ｂの横シール位置に対する前後の動きを担う水平駆動用サーボモータ780を有している。即ち、サーボモータ780の回転は、歯車781によってカム782に伝えられ、カム782の上面に形成された溝を従動するカムフォロア783が、リンク機構784を矢印ｐ（図３）のように揺動させ、それによりアンビル７６ｂが横シール位置に対して水平面内で前後に動く。また、このリンク機構784と接続したロッド785が、押さえ７８の基台786を動かすことにより、押さえ７８を横シール位置に対して水平面内で前後に動かす。
　さらに、カム782の下面にも溝が形成されており、この溝を従動するカムフォロア790がリンク機構791を矢印ｑ（図３）のように揺動させ、これにより、シールヘッド７６ａが幅方向に動く。
　このような駆動機構において、ベースプレート上下駆動用サーボモータ761、９０°揺動サーボモータ770、水平駆動用サーボモータ780は、連動駆動を可能とする制御装置（図示せず）により制御され、制御盤にてそれぞれの回転速度が制御される。したがって、横シールの形成時に抽出バッグ用シート５と接する、シールヘッド７６ａ、アンビル７６ｂ及び押さえ７８の走行速度を、抽出バッグ用シート５の走行方向の速度成分について、完全に抽出バッグ用シート５と同速に制御することができる。よって、抽出バッグ用シート５の走行速度に脈動が生じたり、蛇行が生じたりすることを解消できる。
　なお、縦シール装置７５及び横シール装置７６を構成する溶着溶断装置としては、超音波によるものの他、加熱によるものを使用してもよい。
　この抽出バッグ用充填包装機７０にかける抽出バッグ用シート５としては、抽出バッグ製造用の織物、不織布又はこれらの積層体からなる長尺のシートからなり、必要に応じて糸タグを貼着したもの等を種々使用することができる。
　例えば、糸材としては、ポリプロピレン、ポリエチレン等の熱可塑性合成繊維をはじめとして超音波溶着や熱溶着が可能な素材から形成されたものを使用することができ、タグとしては、紙、プラスチックシート等から形成されたものを使用することができる。また、通水濾過性シートとしては、ポリエステル、ナイロン、ポリエチレン、ポリプロピレン等の合成繊維、レーヨン等の半合成繊維、コウゾ、ミツマタ等の天然繊維の単独又は複合繊維からなる織布、不織布、紙類、多くの孔を開けたフィルム等を使用することができる。
　通水濾過性シート４上のタグ２や糸材３の配置についても特に制限はなく、例えば、図４に示す抽出バッグ用シート５のように、帯状の通水濾過性シート４にタグ２を該シート４の長手方向に所定間隔で配置すると共に、長尺の糸材３を各タグ２に架かるように特定の回旋パターンに配置したものを使用することができる。図中、ｓ１はタグ２と糸材３の強シール部位、ｓ２は糸材３と通水濾過性シート４との強シール部位、ｓ３は糸材３と通水濾過性シート４との弱シール部位、ｓ４はタグ２と通水濾過性シート４との弱シール部位である。また、破線は抽出バッグ１個分の領域の区切りを示している。
　抽出バッグ用シート５としては、糸材３が連続的に回旋パターンを形成しておらず、抽出バッグ１個分のタグ付吊し糸が、帯状の通水濾過性シートの長手方向に所定間隔で配置されているものでもよい。
　さらに、抽出バッグ用シート５としては、ロール状に巻き回されたものを使用してもよく、また、図５に示すように、本発明の抽出バッグ用充填包装機７０を、抽出バッグ用シートの製造機械１と組み合わせて使用してもよい。
　図５の抽出バッグ用シートの製造機械１は、図４に示した抽出バッグ用シート５の製造機械であり、概略、回転担持体１０の周面に所定間隔でタグ２を供給するタグ供給装置２０、糸掛機構４０、回転担持体１０上のタグ２と糸材３の上に通水濾過性シート４を供給するシート供給装置５０、タグ２と糸材３との接着、タグ２と通水濾過性シート４との接着、又は糸材３と通水濾過性シート４との接着を行うシール装置６０からなっている。
　この製造機械１において、回転担持体１０は、この製造機械１の稼働中はサーボモータにより矢印方向に連続回転する。
　回転担持体１０の外周は複数領域に分割され、各分割領域にタグ２の載置部位が２個ずつ近接するように設けられている。このタグ２の載置部位には、タグ２の吸引機構が設けられている。また、回転担持体１０は、糸掛用のピン１１の上下機構を備えている。
　タグ供給装置２０は、タブテープ２ｔを巻き回したタグテープ原反２ｒからタグテープ２ｔを繰り出し、それを所定の長さのタグ２に切断するタグカット供給装置２１と、タグカット供給装置２１で切断されたタグ２を回転担持体１０の周面に移すタグ受渡ドラム２２からなっている。
　このタグ供給装置２０では、タグテープ原反２ｒから回転担持体１０に、タグテープ２ｔを弛ませることなく、かつできる限り高速にタグ２を供給できるように、タグカット供給装置２１をカム機構で矢印のように揺動させつつタグテープ２ｔを切断すると共に、切断したタグ２をタグ受渡ドラム２２に受け渡す。そして、タグ受渡ドラム２２は、等速回転し、タグカット供給装置２１から渡されたタグ２を、所定間隔で回転担持体１０に担持させる。
　糸掛機構４０は、糸材３の張力を略一定に調整しつつ、タグ２が所定間隔で配置された回転担持体１０の周面で糸材３が各タグ２と重なるように糸材３の連続的回旋パターンを形成するものであり、糸材原反３ｒから糸材３を繰り出す駆動ローラ401と、糸材３の張力調整手段410、及び回転担持体１０の周面に糸材３の連続的回旋パターンを形成する糸掛装置３０を備え、張力調整手段410としては、ダンサー機構420とその下流のパス長調整装置430を有している。
　糸掛装置３０は、２つの駆動クランク機構を組み合わせることにより、糸通しを回転担持体１０の周面上で所定の回旋パターンに動かし、回転担持体１０の周面から突出した糸掛用のピン１１に糸をかける。
　シート供給装置５０は、通水濾過性シート４を巻き回したシート原反４ｒから通水濾過性シート４を繰り出し、通水濾過性シート４を、回転担持体１０上に所定間隔で担持されたタグ２とそのタグ２上に形成された糸材３の連続的パターンの上に載せるように供給する。ここで、通水濾過性シート４の繰り出しは、経路途中のダンサーローラ５１に取り付けてあるポテンションメータで、通水濾過性シート４を繰り出すニップ駆動ローラ５２で繰り出し速度を制御することにより、できる限り等速に調整する。
　シール装置６０は、第１、第２、第３、第４のシール装置６１、６２、６３、６４からなっている。第１のシール装置６１は、回転担持体１０上に通水濾過性シート４を供給する前に、回転担持体１０上に担持されているタグ２と糸材３を強シールし、図４のシール部位ｓ１を形成する。第２のシール装置６２は、回転担持体１０上に通水濾過性シート４を供給した後に、糸材３と通水濾過性シート４とを強シールし、図４のシール部位ｓ２を形成する。第３のシール装置６３は、糸材３と通水濾過性シート４とを弱シールし、図４のシール部位ｓ３を形成する。第４のシール装置６４は、タグ２と通水濾過性シート４とを弱シールし、図４に示すシール部位ｓ４を形成する。なお、これらのシール装置のシール手段は、超音波溶着でも加熱溶着でもよい。また、ここで強シールとは、通常の抽出バッグの使用において、シール部位が剥離しない程度に強固にシールすることをいい、弱シールとは、抽出バッグの使用時に、シール部位を容易に剥離できる程度に弱くシールすることをいう。
　このシール装置６０としては、第１、第２、第３、第４のシール装置６１、６２、６３、６４が、上下駆動用サーボモータを駆動源として、回転担持体１０の周面に対して上下動すると共に、揺動用サーボモータを駆動源として回転担持体１０の回転方向に往復揺動し、図５に示した矢印のように揺動するものが好ましい。これにより、簡便にシール条件の最適化を図ることができる。
　なお、図５に示したように抽出バッグ用シートの製造機械１と抽出バッグ用充填包装機７０とを組み合わせる場合には、サーボモータを備えた基準送りローラ７１で繰り出される抽出バッグ用シート５の速度にあわせて充填包装機７０を稼動させることが好ましい。
　図６は、図５に示したように、抽出バッグ用シートの製造機械１と抽出バッグ用充填包装機７０とを組み合わせて得られる抽出バッグ６の斜視図である。この抽出バッグ６は、上下両端縁の幅方向のシールｓｘ、ｓｙがねじれの位置となったピラミッド型の抽出バッグであって、その頂部近傍のシール部位ｓ２で、糸材３からなる吊し糸の一端と通水濾過性シート４とが強シールされ、その吊し糸の他端の部位ｓ１で吊し糸とタグ２が強シールされ、吊し糸とタグ２がそれぞれ部位ｓ３、ｓ４で通水濾過性シート４と弱シールされている。
　本発明の抽出バッグ用充填包装機７０は、上述した実施例の他、種々の態様をとることができる。例えば、図１の抽出バッグ用充填包装機７０の先端が先細に突出したシールヘッド７６ａを有する走行式の溶着溶断装置に代えて、図７に示す抽出バッグ用充填包装機７０Ｂのように、シールヘッドの先端部が、横シールの形成幅に扁平に成形されている直押式の溶着溶断装置760Xを使用してもよい。この場合には、横シールの形成時に、横シール装置７６を抽出バッグ用シート５の筒状体の幅方向に走行させることが不要となるが、横シール形成時と非形成時で横シールの形成位置に対して水平方向の位置を変えることが必要となる。そのため、横シールの形成時には、シールヘッド７６ａの先端部を、矢印ａ，ｃのように、前方に移動させて抽出バッグ用シート５に当接させ、抽出バッグ用シート５と同様に下方に走行させる。
　図８に示す抽出バッグ用充填包装機７０Ｃは、横シール装置７６として、溶着溶断方向が上面視で交差するように配置した２つの溶着溶断装置760A、760Bを備えたものである。この場合、２つの溶着溶断装置760A、760Bを交互に使用する。また、各溶着溶断装置760A、760Bによる横シールの形成方法としては、第１の横シールの形成時には、一方の溶着溶断装置760Aを用いて、図１の抽出バッグ用充填包装機７０の場合と同様に、シールヘッド７６ａを矢印ａのように斜め下方に走行させる。その後、矢印ｂのように、第１の横シールを形成する間の抽出バッグ用シート５の下方への走行距離をキャンセル位置に戻し走行させる。一方、他の溶着溶断装置760Bを用いて矢印ｃのようにシールヘッドを斜め下方に走行させることにより第２の横シールを形成し、その後、矢印ｄのように、第２の横シールを形成する間の抽出バッグ用シート５の加工への走行距離をキャンセル位置に戻し走行させる。
　図９に示す抽出バッグ用充填包装機７０Ｄは、図８の抽出バッグ用充填包装機７０Ｃにおいて、横シール装置７６として、直押式の溶着溶断装置760AX、760BXを備えたものである。この場合、横シールの形成時に、横シール装置を抽出バッグ用シートの筒状体の幅方向に走行させることが不要となるが、横シール形成時と非形成時で横シールの形成位置に対して水平方向の位置を変えることが必要となる。そのため、横シールの形成方法としては、２つの溶着溶断装置760AX、760BXを交互に使用し、各横シールの形成時には、シールヘッドの先端部を、矢印ａ，ｃのように、前方に移動させて抽出バッグ用シート５に当接させ、抽出バッグ用シート５と同様に下方に走行させる。
　また、本発明の抽出バッグ用充填包装機としては、横シール装置７６として、図１のように一つの走行式の溶着溶断装置760を使用する場合において、図１０に示すように、その溶着溶断装置760の中心軸Ｌ2 を、上面視にて、横シール時の溶着溶断方向に対して斜めに配置し、８字型に走行させ、同図（ａ）の第1の横シールの形成と同図（ｂ）の第２の横シールの形成とが交互に繰り返されるようにしてもよい。この抽出バッグ用充填包装機によれば、溶着溶断装置760を、上面視で前後左右に動かせばよく、抽出バッグ用シート５の筒状体の軸Ｌを中心に揺動させることが不要となる。なお、アンビル７６ｂと横シール時に筒状体に成形されている抽出バッグシートを扁平に押し潰す押さえ７８のセットは、溶着溶断方向が上面視で互いに交差するように２セット配置する。これにより、横シール装置に軸Ｌを中心とする揺動機構を設けることが不要となる。
　本発明の抽出バッグ用シートの製造機械は、紅茶、緑茶、ハーブ等のティーバッグ、煮干し、鰹節等のだしの抽出バッグを生産ラインで連続的に製造するために有用である。
 

Claims (8)

  1. 　筒状体に成形されている抽出バッグ用シートを、上面視で互いに交差する方向に交互に溶着溶断することにより第１の横シールと第２の横シールを交互に形成すると共に、
    第１の横シールの形成と第２の横シールの形成を交互に繰り返す間に筒状体の内部に内容物を充填する抽出バッグの製造方法であって、
    各横シールの形成時に抽出バッグ用シートが一定速度で走行するように、抽出バッグ用シートと接するシールヘッドをサーボモータで制御することにより抽出バッグ用シートと共に走行させ、各横シールの形成毎に、該横シールを形成する間の抽出バッグ用シートの走行距離をキャンセルする位置に戻し走行させる四面体形状の抽出バッグの製造方法。
  2. 　横シール装置として、各横シールの形成毎に、抽出バッグ用シートの筒状体の軸中心に溶着溶断方向が揺動する１つの溶着溶断装置を使用する請求項１記載の抽出バッグの製造方法。
  3. 　横シール装置として、溶着溶断方向が上面視で交差するように配置した２つの溶着溶断装置を使用する請求項１記載の抽出バッグの製造方法。
  4. 　横シール装置として、上面視で溶着溶断方向に対して走行式の溶着溶断装置の中心軸を斜めに配置し、その溶着溶断装置を、第１の横シールと第２の横シールが形成されるように、上面視で８字型に走行させる請求項１記載の抽出バッグの製造方法。
  5. 　抽出バッグ用シートを用いて四面体形状の抽出バッグを製造する抽出バッグ用充填包装械であって、
    抽出バッグ用シートの長手方向の両側縁部を溶着することにより筒状体に形成する縦シール装置、
    抽出バッグ用シートを一定速度で走行させるシート送り手段、
    筒状体に成形した抽出バッグ用シートを、上面視で互いに交差する方向に交互に溶着溶断することにより第１の横シールと第２の横シールを交互に形成する横シール装置、
    第１の横シールの形成と第２の横シールの形成を交互に繰り返す間に、筒状体の内部に内容物を充填する充填装置、及び
    各横シールの形成時に抽出バッグ用シートが一定速度で走行するように、抽出バッグ用シートと接するシールヘッドをサーボモータで制御することにより抽出バッグ用シートと共に走行させると共に、各横シールの形成毎に、該横シールを形成する間の抽出バッグ用シートの走行距離をキャンセルする位置に戻し走行させる駆動機構を有する充填包装機。
  6. 　横シール装置として、各横シールの形成毎に、抽出バッグ用シートの筒状体の軸中心に溶着溶断方向が揺動する１つの溶着溶断装置を有する請求項５記載の充填包装機。
  7. 　横シール装置として、溶着溶断方向が上面視で交差するように配置した２つの溶着溶断装置を有する請求項５記載の充填包装機。
  8. 　横シール装置として、上面視で溶着溶断方向に対して中心軸が斜めになるように配置した走行式の溶着溶断装置、及びその溶着溶断装置を、第１の横シールと第２の横シールが形成されるように、上面視で８字型に走行させる駆動機構を有する請求項５記載の充填包装機。
     
PCT/JP2008/059256 2008-05-20 2008-05-20 抽出バッグの製造方法 WO2009141871A1 (ja)

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CN103786928A (zh) * 2014-02-24 2014-05-14 福建元弘自动化科技有限公司 自动茶叶包装机内膜拉袋单边封口装置
EP2769829A1 (de) * 2013-02-20 2014-08-27 Multivac Sepp Haggenmüller GmbH & Co. KG Tiefziehverpackungsmaschine mit Hubeinrichtung
JP2015151161A (ja) * 2014-02-14 2015-08-24 株式会社西野物産 角錐包装体製造装置および角錐包装体の製造方法
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