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JP2008094456A - Vertical seal mechanism - Google Patents

Vertical seal mechanism Download PDF

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Publication number
JP2008094456A
JP2008094456A JP2006280335A JP2006280335A JP2008094456A JP 2008094456 A JP2008094456 A JP 2008094456A JP 2006280335 A JP2006280335 A JP 2006280335A JP 2006280335 A JP2006280335 A JP 2006280335A JP 2008094456 A JP2008094456 A JP 2008094456A
Authority
JP
Japan
Prior art keywords
vertical seal
packaging material
width
contact
vertical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2006280335A
Other languages
Japanese (ja)
Inventor
Satoru Hashimoto
哲 橋本
Masahiko Tatsuoka
正彦 立岡
Yukio Sasaki
幸雄 佐々木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ishida Co Ltd
Original Assignee
Ishida Co Ltd
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 Ishida Co Ltd filed Critical Ishida Co Ltd
Priority to JP2006280335A priority Critical patent/JP2008094456A/en
Priority to US12/440,692 priority patent/US20100043352A1/en
Priority to GB0906584A priority patent/GB2455949B/en
Priority to BRPI0719171-5A2A priority patent/BRPI0719171A2/en
Priority to AU2007305506A priority patent/AU2007305506A1/en
Priority to PCT/JP2007/069628 priority patent/WO2008044662A1/en
Publication of JP2008094456A publication Critical patent/JP2008094456A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/18—Applying or generating heat or pressure or combinations thereof by endless bands or chains
    • 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
    • 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
    • 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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • 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
    • 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
    • B29C66/13—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
    • B29C66/135—Single hemmed joints, i.e. one of the parts to be joined being hemmed in the joint area
    • 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
    • B29C66/347—General aspects dealing with the joint area or with the area to be joined using particular temperature distributions or gradients; using particular heat distributions or gradients
    • B29C66/3472—General aspects dealing with the joint area or with the area to be joined using particular temperature distributions or gradients; using particular heat distributions or gradients in the plane of the joint, e.g. along the joint line in the plane of the joint or perpendicular to the joint line in the plane of the joint
    • 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
    • B29C66/40—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
    • B29C66/432—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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    • B29C66/00—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
    • B29C66/49—Internally supporting the, e.g. tubular, article during joining
    • 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
    • B29C66/82—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
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    • 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
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    • B29C66/822—Transmission mechanisms
    • B29C66/8222—Pinion or rack 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
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along 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
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83421—Roller, cylinder or drum types; Band or belt types; Ball types band or belt types
    • 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
    • B29C66/83541—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws flying jaws, e.g. jaws mounted on crank mechanisms or following a hand over hand movement
    • B29C66/83543—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws flying jaws, e.g. jaws mounted on crank mechanisms or following a hand over hand movement cooperating flying jaws
    • 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
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/849—Packaging machines
    • 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
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91211—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods
    • B29C66/91212—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods involving measurement means being part of the welding jaws, e.g. integrated in the welding jaws
    • 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
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91231—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature of the joining tool
    • 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
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    • B29C66/90—Measuring or controlling the joining process
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    • 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
    • B29C66/9141—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 temperature
    • B29C66/91421—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 temperature of the joining tools
    • 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
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    • 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
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    • 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
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    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • B29C66/9192—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams
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    • 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
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    • B29C66/961—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process involving a feedback loop mechanism, e.g. comparison with a desired value
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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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
    • B29C66/81419—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 and flat
    • 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
    • B29C66/81411—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
    • B29C66/81421—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 convex or concave
    • B29C66/81422—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 convex or concave being convex
    • 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
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B2051/105—Heat seal temperature control

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Package Closures (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vertical seal mechanism which suppresses the generation of a wrinkle, defective sealing, or the like on the periphery of a vertical seal part. <P>SOLUTION: In a bag making/packaging machine 1, a heater belt 16a and a heater block 16b structuring the vertical seal mechanism 15 and a hook-and-loop fastener 13c arranged on a forming mechanism 13 side are so arranged that the amount of heat per unit time which is applied to both outside areas is smaller than that applied to the vertical seal part F1 of a film F. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、筒状に形成された包材を搬送しながら重なり部分をシールするための製袋包装機に搭載される縦シール機構に関する。   The present invention relates to a vertical sealing mechanism mounted on a bag making and packaging machine for sealing an overlapping portion while conveying a packaging material formed in a cylindrical shape.

近年、袋を製造しながら袋の内部にスナック菓子などの被包装物を充填して製袋包装する装置として、製袋包装機が存在している。例えば、ピロー包装機と呼ばれる縦型の製袋包装機では、シート状のフィルムである包材をフォーマおよびチューブによって筒状に成形し、縦シール機構により筒状包材の重ねられた縦の縁を熱シール（熱溶着）して筒状包材とする。そして、最終的に袋となる筒状包材の内部にチューブから被包装物を充填して、チューブ下方の横シール機構によって袋の上端部と後続の袋の下端部とにまたがって熱シールした後、その熱シール部分（横シール部分）の中央をカッターで切断する。   2. Description of the Related Art In recent years, a bag making and packaging machine has existed as a device for filling a bag with a packaged article such as snack confectionery while manufacturing the bag while making the bag. For example, in a vertical bag making and packaging machine called a pillow wrapping machine, a packaging material, which is a sheet-like film, is formed into a cylindrical shape by a former and a tube, and the vertical edge is overlapped by a vertical sealing mechanism. Is sealed (thermally welded) to form a cylindrical packaging material. Then, the tubular packaging material that finally becomes a bag is filled with an article to be packaged from the tube, and is heat sealed across the upper end portion of the bag and the lower end portion of the succeeding bag by a horizontal sealing mechanism below the tube. Then, the center of the heat seal part (lateral seal part) is cut with a cutter.

このような製袋包装機に搭載された縦シール機構では、シート状の包材をチューブに巻きつけて筒状に成形し、筒状包材の重なり部分に対して、加熱されたヒータベルトを当接させて熱と圧力とを加えることで熱シールを行う。このとき、ヒータベルトとの間に包材の重なり部分を挟み込む相手として、筒状包材を形成するチューブの表面におけるヒータベルトとの対向面にパッド（受け部材）が設けられている。   In the vertical seal mechanism mounted on such a bag making and packaging machine, a sheet-like packaging material is wound around a tube and formed into a cylindrical shape, and a heated heater belt is applied to the overlapping portion of the cylindrical packaging material. Heat sealing is performed by applying heat and pressure to contact. At this time, a pad (receiving member) is provided on the surface facing the heater belt on the surface of the tube forming the cylindrical packaging material as an opponent for sandwiching the overlapping portion of the packaging material with the heater belt.

例えば、特許文献１には、ヒータブロックに設けられた発熱突条と、充填チューブの外面に設けられた一対のガイドレールとを備え、これらの発熱突条とガイドレールとによりシール部分である包材の重なり部分を弾性変形させて３点支持し、発熱突条から重なり部分に熱を集中的に付与してヒートシールする縦シール装置が開示されている。
特開２０００−７２１０４号公報（平成１２年３月７日公開） For example, Patent Document 1 includes a heating ridge provided on the heater block and a pair of guide rails provided on the outer surface of the filling tube, and a package serving as a seal portion is formed by the heating ridge and the guide rail. A vertical sealing device is disclosed in which the overlapping portion of the material is elastically deformed and supported at three points, and heat is concentrated from the heating ridge to the overlapping portion to heat-seal.
JP 2000-72104 A (published March 7, 2000)

しかしながら、上記従来の縦シール機構では、以下に示すような問題点を有している。   However, the conventional vertical seal mechanism has the following problems.

すなわち、上記公報に開示された縦シール機構では、シール部分の周辺にも比較的大きな熱量が付与されるため、シール部分だけでなくその周辺部分まで収縮して、しわが発生してしまうおそれがある。   That is, in the vertical seal mechanism disclosed in the above publication, since a relatively large amount of heat is applied also to the periphery of the seal portion, there is a risk that wrinkles will occur due to contraction not only to the seal portion but also to the peripheral portion. is there.

本発明の課題は、縦シール部分の周辺部分におけるしわやシール不良等の発生を抑制することが可能な縦シール機構を提供することにある。   The subject of this invention is providing the vertical seal | sticker mechanism which can suppress generation | occurrence | production of the wrinkle in the peripheral part of a vertical seal | sticker part, a seal | sticker defect, etc.

第１の発明に係る縦シール機構は、筒状に形成された包材を搬送しながら、包材の重なり部分をシールする縦シール機構であって、接触部と、加熱部と、受け部材とを備えている。接触部は、包材の搬送方向に沿って形成される包材の重なり部分に接触する。加熱部は、接触部を加熱する。受け部材は、接触部との間に包材を挟み込むようにして縦シールを行う。そして、接触部と加熱部と受け部材とは、包材の搬送方向に交差する方向における縦シール部分の両側に向かって、接触部から包材に対して付与される単位時間当たりの熱量が少なくなるように構成されている。   A vertical sealing mechanism according to a first invention is a vertical sealing mechanism that seals an overlapping portion of packaging materials while conveying the packaging material formed in a cylindrical shape, and includes a contact portion, a heating portion, and a receiving member. It has. A contact part contacts the overlapping part of the packaging material formed along the conveyance direction of a packaging material. A heating part heats a contact part. The receiving member performs vertical sealing such that the packaging material is sandwiched between the receiving member and the receiving member. The contact portion, the heating portion, and the receiving member have a small amount of heat per unit time applied to the packaging material from the contact portion toward both sides of the vertical seal portion in the direction intersecting the packaging material conveyance direction. It is comprised so that it may become.

ここでは、包材を所定の方向に搬送しながら筒状とし、その重なり部分に縦シール部分を形成して製袋する縦シール機構において、縦シール部分を形成する接触部と加熱部と受け部材とを、縦シール部分の幅方向における両側に向かって接触部から包材に対して付与される熱量が少なくなるように構成されている。具体的には、縦シール部分の外周部分に過度な熱が付与されないように、例えば、接触部の幅方向における両側に向かって低くなる温度勾配を設けている。   Here, in a vertical seal mechanism for forming a bag by transporting a packaging material in a predetermined direction and forming a vertical seal portion at the overlapping portion to form a bag, a contact portion, a heating portion, and a receiving member that form the vertical seal portion The amount of heat applied to the packaging material from the contact portion toward both sides in the width direction of the vertical seal portion is reduced. Specifically, for example, a temperature gradient that decreases toward both sides in the width direction of the contact portion is provided so that excessive heat is not applied to the outer peripheral portion of the vertical seal portion.

なお、上記包材の搬送方向に交差する方向における縦シール部分の両側とは、縦シール部分の幅方向における両端部を意味する。   In addition, the both sides of the vertical seal part in the direction crossing the conveyance direction of the said packaging material mean the both ends in the width direction of a vertical seal part.

通常、このような縦シール機構では、包材が搬送される際に左右にぶれた場合でも縦シール部分を形成することができるように、包材に対して直接接触する接触部の幅を縦シール部分の幅よりも大きく設定している。このため、従来の縦シール機構では、縦シール部分の幅方向における両側にも縦シール部分と同等の熱が付与されて収縮するため、しわやシール不良が発生する原因となっていた。   Usually, in such a vertical seal mechanism, the width of the contact portion that directly contacts the packaging material is set so that the vertical seal portion can be formed even when the packaging material is moved left and right when it is conveyed. It is set larger than the width of the seal part. For this reason, in the conventional vertical seal mechanism, the same heat as that of the vertical seal portion is applied to both sides in the width direction of the vertical seal portion and contracts, causing wrinkles and poor seals.

本発明の縦シール機構では、接触部から包材に対して付与される熱のうち、縦シール部分の周辺にまで必要以上に熱が付与されないように、接触部、加熱部、受け部材を構成している。   In the vertical seal mechanism of the present invention, the contact portion, the heating portion, and the receiving member are configured so that the heat applied from the contact portion to the packaging material is not applied more than necessary to the periphery of the vertical seal portion. is doing.

これにより、包材における縦シールされる部分以外に付与される熱量を従来よりも抑制して、縦シールに必要な熱量を包材における縦シール部分だけに付与することができる。この結果、縦シール部分の両側が過度に加熱されることを防止することができるため、縦シール部分に沿ってしわやシール不良等の不具合が発生することを回避することができる。   Thereby, the amount of heat applied to portions other than the portion to be vertically sealed in the packaging material can be suppressed more than before, and the amount of heat necessary for the longitudinal seal can be applied only to the longitudinal seal portion in the packaging material. As a result, since both sides of the vertical seal portion can be prevented from being heated excessively, it is possible to avoid the occurrence of problems such as wrinkles and defective seals along the vertical seal portion.

第２の発明に係る縦シール機構は、第１の発明に係る縦シール機構であって、加熱部と受け部材とは、包材に形成される縦シール部分の幅と略等しい幅を有している。そして、接触部は、縦シール部分の幅よりも大きい幅を有している。   The vertical seal mechanism according to the second invention is the vertical seal mechanism according to the first invention, wherein the heating part and the receiving member have a width substantially equal to the width of the vertical seal part formed in the packaging material. ing. And the contact part has a width | variety larger than the width | variety of a vertical seal | sticker part.

ここでは、加熱部分と受け部材の幅を縦シール部分の幅と合わせ、接触部の幅をそれよりも大きくしている。   Here, the width of the heating part and the receiving member is matched with the width of the vertical seal part, and the width of the contact part is made larger than that.

これにより、接触部には、加熱部と同じ幅の領域には縦シールするために必要な高い熱量が付与される一方、その両側の領域にかけては徐々に熱量が低くなる。この結果、包材に対して接触する接触部の両側にかけて温度を低くすることができるため、縦シール部分の周辺にしわやシール不良が発生することを防止することができる。   As a result, the contact portion is given a high amount of heat necessary for longitudinal sealing in a region having the same width as the heating portion, while the amount of heat gradually decreases toward the regions on both sides thereof. As a result, since the temperature can be lowered on both sides of the contact portion that comes into contact with the packaging material, it is possible to prevent the occurrence of wrinkles or poor sealing around the vertical seal portion.

第３の発明に係る縦シール機構は、第１の発明に係る縦シール機構であって、受け部材は、縦シール部分の幅と略等しい幅を有している。   A vertical seal mechanism according to a third invention is the vertical seal mechanism according to the first invention, wherein the receiving member has a width substantially equal to the width of the vertical seal portion.

ここでは、受け部材の幅を縦シール部分の幅に合わせて構成している。   Here, the width of the receiving member is configured to match the width of the vertical seal portion.

これにより、接触部の幅が縦シール部分の幅よりも大きい場合でも、接触部と受け部材との間には縦シール部分だけが挟み込まれて熱が付与される。このため、縦シール部分の外側に直接的に大きな熱が付与されることを回避することで、縦シール部分に沿ってしわやシール不良等が発生することを防止することができる。   Thereby, even when the width of the contact portion is larger than the width of the vertical seal portion, only the vertical seal portion is sandwiched between the contact portion and the receiving member and heat is applied. For this reason, it can prevent that a wrinkle, a sealing defect, etc. generate | occur | produce along a vertical seal part by avoiding that a big heat | fever is directly given to the outer side of a vertical seal part.

第４の発明に係る縦シール機構は、第１の発明に係る縦シール機構であって、受け部材は、幅方向における両側が接触部と離間する湾曲状の接触面を有している。   A vertical seal mechanism according to a fourth invention is the vertical seal mechanism according to the first invention, wherein the receiving member has a curved contact surface whose both sides in the width direction are separated from the contact portion.

ここでは、接触部との間に包材を挟み込んで縦シール部分を形成する受け部材における包材との接触面が、縦シール部分だけが接触部と受け部材との間に挟み込まれるように湾曲状になっている。   Here, the contact surface of the receiving member that forms the vertical seal portion by sandwiching the packaging material with the contact portion is curved so that only the vertical seal portion is sandwiched between the contact portion and the receiving member. It is in the shape.

これにより、縦シール部分の両側に対して接触部から付与される熱量を抑制し、縦シール部分を中心に熱を付与することができる。この結果、縦シール部分の周辺への過度な熱の供給を回避して、しわやシール不良の発生を防止することができる。   Thereby, the amount of heat applied from the contact portion to both sides of the vertical seal portion can be suppressed, and heat can be applied around the vertical seal portion. As a result, excessive heat supply to the periphery of the vertical seal portion can be avoided, and the occurrence of wrinkles and seal defects can be prevented.

第５の発明に係る縦シール機構は、第１の発明に係る縦シール機構であって、接触部は、縦シール部分との接触部分よりも外側の領域にかけて包材と離間する湾曲面を有している。   A vertical seal mechanism according to a fifth invention is the vertical seal mechanism according to the first invention, wherein the contact portion has a curved surface that is separated from the packaging material in a region outside the contact portion with the vertical seal portion. is doing.

ここでは、受け部材との間に包材を挟み込むようにして縦シール部分を形成する接触部に、幅方向両側に向かって包材との距離が大きくなる湾曲面を形成している。   Here, a curved surface that increases the distance from the packaging material toward both sides in the width direction is formed at the contact portion that forms the vertical seal portion so as to sandwich the packaging material between the receiving member and the receiving member.

これにより、包材における縦シール部分の両側については、接触部と受け部材との間に直接挟み込まれることはない。この結果、縦シール部分の周辺への過度な熱の供給を回避して、しわやシール不良の発生を防止することができる。   Thus, the both sides of the vertical seal portion in the packaging material are not directly sandwiched between the contact portion and the receiving member. As a result, excessive heat supply to the periphery of the vertical seal portion can be avoided, and the occurrence of wrinkles and seal defects can be prevented.

第６の発明に係る縦シール機構は、第１から第５の発明のいずれか１つに係る縦シール機構であって、加熱部は、包材の搬送方向に対して直交する平面による断面形状が、略Ｔ字型となっており、Ｔ字型の凸側の面が接触部と近接配置されている。   A vertical seal mechanism according to a sixth aspect of the present invention is the vertical seal mechanism according to any one of the first to fifth aspects of the present invention, wherein the heating part is a cross-sectional shape by a plane orthogonal to the packaging material conveyance direction. However, it is substantially T-shaped, and the convex-side surface of the T-shape is disposed close to the contact portion.

ここでは、断面形状が略Ｔ字型の加熱部を用いて接触部を加熱する。そして、略Ｔ字型の凸側の面によって接触部を加熱する。   Here, the contact portion is heated using a heating portion having a substantially T-shaped cross section. Then, the contact portion is heated by the substantially T-shaped convex surface.

これにより、略Ｔ字型の加熱部における凸部分では、中央部分と比較して熱が放散しやすいため、両端に向かって傾斜する温度勾配を設けることができる。この結果、縦シール部分の両側に付与される熱を低減して、縦シール部分の両側に沿ってしわやシール不良等が発生することを防止することができる。   Thereby, in the convex part in a substantially T-shaped heating part, since a heat | fever is easy to dissipate compared with a center part, the temperature gradient which inclines toward both ends can be provided. As a result, heat applied to both sides of the vertical seal portion can be reduced, and wrinkles, seal defects, and the like can be prevented from occurring along both sides of the vertical seal portion.

第７の発明に係る縦シール機構は、第１から第６の発明のいずれか１つに係る縦シール機構であって、接触部は、加熱部の周りを回転する回転帯体である。   A vertical seal mechanism according to a seventh aspect of the present invention is the vertical seal mechanism according to any one of the first to sixth aspects of the present invention, wherein the contact portion is a rotating band that rotates around the heating portion.

これにより、回転帯体から縦シール部分の周辺に対して過剰な熱が付与されることを防止して、縦シール部分に沿ってしわやシール不良等の不具合が発生することを回避することができる。   This prevents excessive heat from being applied from the rotating belt to the periphery of the vertical seal portion, and avoids occurrence of defects such as wrinkles and defective seals along the vertical seal portion. it can.

第８の発明に係る縦シール機構は、第１から第６の発明のいずれか１つに係る縦シール機構であって、接触部は、加熱部と一体的に構成されるヒートブロックである
これにより、ヒートブロックから縦シール部分の周辺に対して過剰な熱が付与されることを防止して、縦シール部分に沿ってしわやシール不良等の不具合が発生することを回避することができる。 A vertical seal mechanism according to an eighth invention is the vertical seal mechanism according to any one of the first to sixth inventions, wherein the contact portion is a heat block configured integrally with the heating portion. Accordingly, it is possible to prevent excessive heat from being applied from the heat block to the periphery of the vertical seal portion, and to avoid occurrence of problems such as wrinkles and poor seals along the vertical seal portion.

本発明の縦シール機構によれば、縦シール部分の両側が過度に加熱されることを防止することができるため、縦シール部分に沿ってしわやシール不良等の不具合が発生することを回避することができる。   According to the vertical seal mechanism of the present invention, since both sides of the vertical seal portion can be prevented from being heated excessively, problems such as wrinkles and defective seals are avoided along the vertical seal portion. be able to.

本発明の一実施形態に係る縦シール機構１５を搭載した製袋包装機１について、図１〜図８を用いて説明すれば以下の通りである。   It will be as follows if the bag making packaging machine 1 carrying the vertical seal | sticker mechanism 15 which concerns on one Embodiment of this invention is demonstrated using FIGS.

［製袋包装機１全体の構成］
本発明の一実施形態に係る製袋包装機１は、図１に示すように、ポテトチップスなどの商品（ここでは、ポテトチップス）Ｃを熱可塑性のフィルム（包材）Ｆで覆い、筒状となったフィルムＦを縦および横にシールして袋を製造する装置である。 [Configuration of bag making and packaging machine 1 as a whole]
As shown in FIG. 1, a bag making and packaging machine 1 according to an embodiment of the present invention covers a product (here, potato chips) C such as potato chips with a thermoplastic film (wrapping material) F, and has a cylindrical shape. It is an apparatus for manufacturing a bag by sealing the film F thus formed vertically and horizontally.

なお、ポテトチップスは、製袋包装機１の上方に設けられた計量機等から、原則として所定量ずつ落下してくるようになっている。   In principle, the potato chips are dropped by a predetermined amount from a weighing machine or the like provided above the bag making and packaging machine 1.

製袋包装機１は、製袋部１０と、制御部２０と、フィルムロール保持部（図示せず）と、を備えている。   The bag making and packaging machine 1 includes a bag making unit 10, a control unit 20, and a film roll holding unit (not shown).

［フィルムロール保持部］
フィルムロール保持部は、後述する製袋部１０のフォーマ１３ａにシート状のフィルムＦを繰り出すフィルムロールを保持している。フィルムロールは、長尺のフィルムＦが巻回されて構成されている。このフィルムロールから繰り出されるフィルムＦは、ダンサーローラなどによって張力が所定範囲に保たれ、搬送中のゆるみや蛇行が抑えられる。 [Film roll holder]
The film roll holding unit holds a film roll that feeds the sheet-like film F to the former 13a of the bag making unit 10 to be described later. The film roll is constituted by winding a long film F. The film F fed out from the film roll is kept in a predetermined range by a dancer roller or the like, so that loosening and meandering during conveyance are suppressed.

また、フィルムロール保持部の近傍には、フィルムロールに巻かれているフィルムＦの残量を検知するフィルム残量検知センサ（図示せず）が配置されている。   Further, a film remaining amount detection sensor (not shown) for detecting the remaining amount of the film F wound around the film roll is disposed in the vicinity of the film roll holding unit.

［製袋部１０］
製袋部１０は、図１に示すように、フィルムロール保持部からシート状で送られてくるフィルムＦを筒状に成形する成形機構１３と、筒状となったフィルムＦ（以下、筒状フィルムという。）を下方に搬送するプルダウンベルト機構１４と、筒状フィルムの重なり部分を縦にシールする縦シール機構１５と、筒状フィルムを横にシールすることで袋Ｂの上下の端部を封止する横シール機構１７とを有している。 [Bag making part 10]
As shown in FIG. 1, the bag making unit 10 includes a forming mechanism 13 that forms a film F sent in a sheet form from a film roll holding unit into a tubular shape, and a tubular film F (hereinafter, tubular shape). A pull-down belt mechanism 14 that conveys the film) downward, a vertical seal mechanism 15 that vertically seals the overlapping portion of the tubular film, and the upper and lower ends of the bag B by horizontally sealing the tubular film. And a horizontal sealing mechanism 17 for sealing.

＜成形機構１３＞
成形機構１３は、チューブ１３ｂと、フォーマ１３ａと、面ファスナー（受け部材）１３ｃとを有している。なお、ここでは、面ファスナー１３ｃを、成形機構１３側の部材として説明するが、後述する縦シール機構１５側の部材として考えることもできる。 <Molding mechanism 13>
The forming mechanism 13 includes a tube 13b, a former 13a, and a surface fastener (receiving member) 13c. Here, the hook-and-loop fastener 13c is described as a member on the molding mechanism 13 side, but can also be considered as a member on the vertical seal mechanism 15 side described later.

チューブ１３ｂは、円筒形状の部材であり上下端が開口している。このチューブ１３ｂの上端の開口部には、計量機で計量されたポテトチップスＣが投入される。また、チューブ１３ｂは、後述する縦シール機構１５のヒータベルト１６ａと対向する面に、面ファスナー１３ｃを備えている。そして、この面ファスナー１３ｃとヒータベルト１６ａとの間にフィルムＦの重なり部分Ｆ２（図３参照）を挟み込んでシールを行う。   The tube 13b is a cylindrical member and has upper and lower ends opened. Potato chips C weighed with a weighing machine are put into the opening at the upper end of the tube 13b. Moreover, the tube 13b is provided with a hook-and-loop fastener 13c on the surface facing the heater belt 16a of the vertical seal mechanism 15 described later. Then, an overlapping portion F2 (see FIG. 3) of the film F is sandwiched between the surface fastener 13c and the heater belt 16a for sealing.

フォーマ１３ａは、チューブ１３ｂを取り囲むように配置されている。このフォーマ１３ａの形状は、フィルムロールから繰り出されてきたシート状のフィルムＦがフォーマ１３ａとチューブ１３ｂとの間を通るときに筒状に成形されるような形状となっている。   The former 13a is disposed so as to surround the tube 13b. The form of the former 13a is such that the sheet-like film F fed out from the film roll is formed into a cylindrical shape when passing between the former 13a and the tube 13b.

また、成形機構１３のチューブ１３ｂやフォーマ１３ａは、製造する袋の大きさに応じて取り替えることができる。   Further, the tube 13b and the former 13a of the forming mechanism 13 can be replaced according to the size of the bag to be manufactured.

面ファスナー１３ｃは、図３〜図５に示すように、チューブ１３ｂの表面における縦シール機構１５のヒータベルト１６ａと対向する平らな部分に交換可能な状態で取付けられている。面ファスナー１３ｃは、ヒータベルト１６ａとの間でフィルムの重なり部分に熱と圧力を加えてシールを行う。なお、この面ファスナー１３ｃとしては、シール性向上の観点から、例えば、マジックテープ等のように、フィルムＦとの接触方向に弾性を有し、かつ接触面における摩擦抵抗が小さい部材を用いることが好ましい。また、面ファスナー１３ｃは、図３に示すように、平面視においてフィルムＦの縦シール部分Ｆ１の幅ｄ（図２参照）とほぼ等しい幅ｄ１を有しており、この幅内において縦シール部分Ｆ１を形成する。これにより、フィルムＦに縦シール部分Ｆ１を形成する際には、縦シール部分Ｆ１の幅ｄとほぼ同じ幅である面ファスナー１３ｃとヒータベルト１６ａとの間にフィルムＦの重なり部分Ｆ２を挟み込んでシール処理を行うことで、ヒータベルト１６ａの幅ｄ２が縦シール部分Ｆ１の幅ｄよりも大きい場合でも、縦シール部分Ｆ１に対して集中的に熱量を付与してシール処理を行うことができる。   As shown in FIGS. 3 to 5, the surface fastener 13 c is attached in a replaceable manner to a flat portion facing the heater belt 16 a of the vertical seal mechanism 15 on the surface of the tube 13 b. The hook-and-loop fastener 13c seals by applying heat and pressure to the overlapping portion of the film with the heater belt 16a. As the surface fastener 13c, for example, a member having elasticity in the contact direction with the film F and having a small frictional resistance on the contact surface, such as a magic tape, is used from the viewpoint of improving the sealing performance. preferable. Further, as shown in FIG. 3, the hook-and-loop fastener 13c has a width d1 substantially equal to the width d (see FIG. 2) of the vertical seal portion F1 of the film F in a plan view. F1 is formed. Thus, when the vertical seal portion F1 is formed on the film F, the overlapping portion F2 of the film F is sandwiched between the surface fastener 13c and the heater belt 16a, which is substantially the same width as the width d of the vertical seal portion F1. By performing the sealing process, even when the width d2 of the heater belt 16a is larger than the width d of the vertical seal part F1, it is possible to perform the sealing process by intensively applying heat to the vertical seal part F1.

＜プルダウンベルト機構１４＞
プルダウンベルト機構１４は、チューブ１３ｂに巻き付いた筒状フィルムを吸着して下方に搬送する機構であり、図１および図５に示すように、チューブ１３ｂを挟んで左右両側にそれぞれベルト１４ｃが設けられている。プルダウンベルト機構１４では、吸着機能を有するベルト１４ｃを駆動ローラ１４ａおよび従動ローラ１４ｂによって回して筒状フィルムを下方に運ぶ。なお、図１および図５においては、駆動ローラ１４ａ等を回転させるローラ駆動モータの図示を省略している。 <Pull-down belt mechanism 14>
The pull-down belt mechanism 14 is a mechanism for adsorbing and transporting the tubular film wound around the tube 13b downward. As shown in FIGS. 1 and 5, belts 14c are provided on both the left and right sides of the tube 13b. ing. In the pull-down belt mechanism 14, the belt 14c having an adsorption function is rotated by the driving roller 14a and the driven roller 14b to carry the cylindrical film downward. In FIG. 1 and FIG. 5, a roller drive motor that rotates the drive roller 14a and the like is not shown.

＜縦シール機構１５＞
縦シール機構１５は、図１に示すように、チューブ１３ｂに巻き付いた筒状フィルムＦの重なり部分Ｆ２（図３参照）を、チューブ１３ｂに取り付けられた面ファスナー１３ｃの部分に一定の圧力で押しつけて熱と圧力とを加えて縦方向（搬送方向）に沿って縦シール部分Ｆ１（図１および図２参照）を形成する機構である。また、この縦シール機構１５は、チューブ１３ｂの正面側に配置されており、制御部２０と接続されている。また、縦シール機構１５は、図２に示すように、ヒータベルト（接触部、回転帯体）１６ａ、ヒータブロック（加熱部）１６ｂ、プーリ１６ｃを有している。 <Vertical seal mechanism 15>
As shown in FIG. 1, the vertical sealing mechanism 15 presses the overlapping portion F2 (see FIG. 3) of the tubular film F wound around the tube 13b on the surface fastener 13c attached to the tube 13b with a constant pressure. In this mechanism, heat and pressure are applied to form a vertical seal portion F1 (see FIGS. 1 and 2) along the vertical direction (conveyance direction). The vertical seal mechanism 15 is disposed on the front side of the tube 13 b and is connected to the control unit 20. Further, as shown in FIG. 2, the vertical sealing mechanism 15 includes a heater belt (contact portion, rotating belt) 16a, a heater block (heating portion) 16b, and a pulley 16c.

ヒータベルト１６ａは、図２に示すように、無端状（たすき形状）に形成された、厚さ約０．１５ｍｍの金属製のベルトである。ヒータベルト１６ａは、内面に当接するように配置された２つのプーリ１６ｃによってほぼ一定のテンションを維持した状態で保持されており、プーリ１６ｃが回転すると長手方向に回転する。そして、ヒータベルト１６ａの回転速度とほぼ同じ速度で搬送される筒状のフィルムＦをチューブ１３ｂ（面ファスナー１３ｃ）との間に挟みこむようにしてフィルムＦの重なり部分Ｆ２（図３参照）に接触し、面ファスナー１３ｃとの間において圧力と熱とを付加して縦シールを行う。また、ヒータベルト１６ａは、図３に示すように、縦シール部分Ｆ１の幅ｄとほぼ同じ幅である面ファスナー１３ｃ、ヒータブロック１６ｂの幅ｄ１，ｄ３よりも大きい幅ｄ２を有している。このため、フィルムＦの重なり部分Ｆ２に対して直接接触するヒータベルト１６ａには、図８に示すように、ヒータブロック１６ｂと近接配置された中心部分から両側に向かって下降する温度勾配が形成される。これにより、フィルムＦの縦シール部分Ｆ１に対してはシールを行うために十分な単位時間当たりの熱量と圧力とを付与することができる一方、その周辺の領域についてはそれよりも小さい熱量、圧力を付与することができる。この結果、フィルムＦにおける縦シール部分Ｆ１の周辺に、ヒータベルト１６ａとの接触によって過度に単位時間当たりの熱量が付与されることを回避して、縦シール部分Ｆ１に沿ってしわやシール不良が発生することを防止することができる。   As shown in FIG. 2, the heater belt 16 a is a metal belt having an endless shape (pasted shape) and a thickness of about 0.15 mm. The heater belt 16a is held in a state where a substantially constant tension is maintained by two pulleys 16c arranged so as to contact the inner surface, and rotates in the longitudinal direction when the pulley 16c rotates. Then, the tubular film F conveyed at a speed substantially equal to the rotation speed of the heater belt 16a is sandwiched between the tube 13b (surface fastener 13c) and comes into contact with the overlapping portion F2 (see FIG. 3) of the film F. A vertical seal is performed by applying pressure and heat between the surface fastener 13c. Further, as shown in FIG. 3, the heater belt 16a has a surface fastener 13c having substantially the same width as the width d of the vertical seal portion F1, and a width d2 larger than the widths d1 and d3 of the heater block 16b. Therefore, as shown in FIG. 8, a temperature gradient is formed on the heater belt 16a that is in direct contact with the overlapping portion F2 of the film F so as to descend toward both sides from the central portion disposed in proximity to the heater block 16b. The Thereby, the amount of heat and pressure per unit time sufficient for performing sealing can be applied to the vertical seal portion F1 of the film F, while the heat and pressure smaller than that are applied to the surrounding area. Can be granted. As a result, an excessive amount of heat per unit time is prevented from being applied to the periphery of the vertical seal portion F1 in the film F by contact with the heater belt 16a, and wrinkles and seal defects are generated along the vertical seal portion F1. Occurrence can be prevented.

ヒータブロック１６ｂは、図２〜図４に示すように、金属製の直方体形状のブロックであって、ヒータベルト１６ａとフィルムＦとが接触する側に、発熱するヒータバー１６ｅを内蔵している。そして、ヒータブロック１６ｂは、ヒータベルト１６ａの長手方向の面に沿ってヒータベルト１６ａの内面側に近接配置されており、ヒータベルト１６ａを１４０〜１５０℃まで加熱する。なお、ヒータブロック１６ｂの裏面側にはヒータバー１６ｅを内蔵していないが、ヒータブロック１６ｂ全体が熱伝導率の高い金属で構成されているため、裏面側の温度も１３０℃前後まで加熱される。また、ヒータブロック１６ｂは、図３に示すように、面ファスナー１３ｃと同様に、平面視においてフィルムＦの縦シール部分Ｆ１の幅ｄ（図２参照）とほぼ等しい幅ｄ３（≒ｄ１）を有している。このため、ヒータブロック１６ｂからヒータベルト１６ａに対しては、縦シール部分Ｆ１の幅ｄの幅分だけはシール処理に十分な熱量が付与される。一方、ヒータベルト１６ａにおける縦シール部分Ｆ１の幅ｄよりも外側の領域については、ヒータブロック１６ｂが近接して配置されていないため、付与される熱量としては大幅に少なくなり、ヒータベルト１６ａの表面には、中心から両端にかけて温度が低くなる温度勾配が形成される（図８のグラフ参照）。   As shown in FIGS. 2 to 4, the heater block 16 b is a metal rectangular parallelepiped block, and includes a heater bar 16 e that generates heat on the side where the heater belt 16 a contacts the film F. The heater block 16b is disposed close to the inner surface of the heater belt 16a along the longitudinal surface of the heater belt 16a, and heats the heater belt 16a to 140 to 150 ° C. In addition, although the heater bar 16e is not incorporated in the back surface side of the heater block 16b, since the heater block 16b whole is comprised with the metal with high heat conductivity, the temperature of a back surface side is also heated to about 130 degreeC. Further, as shown in FIG. 3, the heater block 16b has a width d3 (≈d1) substantially equal to the width d (see FIG. 2) of the vertical seal portion F1 of the film F in a plan view, like the surface fastener 13c. is doing. For this reason, a sufficient amount of heat is applied to the sealing process from the heater block 16b to the heater belt 16a by the width d of the vertical seal portion F1. On the other hand, in the region outside the width d of the vertical seal portion F1 in the heater belt 16a, since the heater block 16b is not disposed close to the heater belt 16a, the amount of heat applied is greatly reduced, and the surface of the heater belt 16a is reduced. A temperature gradient in which the temperature decreases from the center to both ends is formed (see the graph of FIG. 8).

プーリ１６ｃは、図２および図４に示すように、ヒータベルト１６ａの内面側に２つ配置されており、モータ（図示せず）からの回転力が伝達されて回転軸１６ｆ（図６参照）を中心に回転することでヒータベルト１６ａを長手方向に回転させる。   As shown in FIGS. 2 and 4, two pulleys 16c are arranged on the inner surface side of the heater belt 16a, and a rotational force from a motor (not shown) is transmitted to the rotating shaft 16f (see FIG. 6). To rotate the heater belt 16a in the longitudinal direction.

なお、ヒータベルト１６ａにおける内面側とは、プーリ１６ｃによって支持されている無端状ベルトの内側の面であり、ヒータベルト１６ａにおける外面側とは、フィルムＦに接触して縦シールを行う側の面を示すものとする。また、ヒータブロック１６ｂにおける裏面側とは、ヒータバー１６ｅが内蔵されている縦シールを行う側とは反対側を示すものとする。   The inner surface side of the heater belt 16a is the inner surface of the endless belt supported by the pulley 16c, and the outer surface side of the heater belt 16a is the surface that contacts the film F and performs vertical sealing. It shall be shown. Further, the back surface side of the heater block 16b indicates the side opposite to the side on which the vertical seal in which the heater bar 16e is incorporated is performed.

＜横シール機構１７＞
横シール機構（横シール部）１７は、成形機構１３、プルダウンベルト機構１４および縦シール機構１５の下方に配置されている。横シール機構１７は、ヒータを内蔵する一対のシールジョー５１を有している（図７参照）。一対のシールジョー５１は、それぞれ、筒状フィルムの前側および後側に位置しており、図７に示すように、前後対称の略Ｄ字状の軌跡Ｔを描くように旋回する。そして、旋回の途中で、一対のシールジョー５１が互いに押しつけ合う状態で筒状フィルムを挟持し、袋の上下の端部となる筒状フィルムの部分に圧力および熱を加えてシールを施す。筒状フィルムの前側に位置するシールジョー５１は、軸１７ｃを中心に回転するように軸１７ｃに支持されている。この軸１７ｃは、図示しない旋回用モータの作動によってギヤを介して回転するとともに、軸移動用モータの作動によってボールねじ機構（図示せず）を介して前後に水平移動する。また、同様に、筒状フィルムの後側に位置するシールジョー５１も、旋回用モータの作動によってギヤを介して回転するとともに、軸移動用モータの作動によって前後に水平移動する。このように、一対のシールジョー５１が回転するとともに水平移動することによって、略Ｄ字状のシールジョー５１の軌跡Ｔが実現されている。また、軸移動用モータのトルク制御によって、一対のシールジョー５１が筒状フィルムを挟み込むときの圧力が調整される。 <Horizontal seal mechanism 17>
The horizontal seal mechanism (horizontal seal portion) 17 is disposed below the forming mechanism 13, the pull-down belt mechanism 14, and the vertical seal mechanism 15. The horizontal sealing mechanism 17 has a pair of sealing jaws 51 with a built-in heater (see FIG. 7). The pair of sealing jaws 51 are positioned on the front side and the rear side of the tubular film, respectively, and as shown in FIG. 7, swivel so as to draw a substantially D-shaped trajectory T that is symmetrical in the front-rear direction. In the middle of turning, the tubular film is sandwiched in a state where the pair of sealing jaws 51 are pressed against each other, and pressure and heat are applied to the portions of the tubular film that are the upper and lower ends of the bag to seal. The sealing jaw 51 located on the front side of the tubular film is supported by the shaft 17c so as to rotate about the shaft 17c. The shaft 17c rotates through a gear by the operation of a turning motor (not shown) and horizontally moves back and forth through a ball screw mechanism (not shown) by the operation of the shaft moving motor. Similarly, the seal jaw 51 located on the rear side of the tubular film also rotates through the gear by the operation of the turning motor and horizontally moves back and forth by the operation of the shaft moving motor. Thus, the locus T of the substantially D-shaped sealing jaw 51 is realized by the pair of sealing jaws 51 rotating and moving horizontally. Further, the pressure when the pair of sealing jaws 51 sandwich the cylindrical film is adjusted by torque control of the shaft moving motor.

また、一対のシールジョー５１の片方の内部には、図示しないカッターが内蔵されている。このカッターは、シールジョー５１による横シール部分の高さ方向の中心位置において、袋Ｂと後続の筒状フィルムとを切り離す役割を果たす。   A cutter (not shown) is built in one of the pair of sealing jaws 51. This cutter plays a role of separating the bag B and the subsequent cylindrical film at the center position in the height direction of the horizontal seal portion by the seal jaw 51.

＜制御部２０＞
制御部２０は、図１に示すように、縦シール機構１５等に接続されている。そして、縦シール機構１５が備えているヒータブロック１６ｂ（ヒータバー１６ｅ）に接続されており、ヒータブロック１６ｂの温度を検知する温度センサ（図示せず）による検知結果に応じて、ヒータバー１６ｅ（ヒータブロック１６ｂ）からヒータベルト１６ａに対して付与される熱量、つまりヒータブロック１６ｂの設定温度を調整するとともに、製袋包装機１全体の動作を制御する。 <Control unit 20>
As shown in FIG. 1, the control unit 20 is connected to the vertical seal mechanism 15 and the like. The heater bar 16e (heater block 16e) is connected to the heater block 16b (heater bar 16e) provided in the vertical seal mechanism 15, and the heater bar 16e (heater block) is detected according to a detection result by a temperature sensor (not shown) that detects the temperature of the heater block 16b. The amount of heat applied to the heater belt 16a from 16b), that is, the set temperature of the heater block 16b, is adjusted, and the overall operation of the bag making and packaging machine 1 is controlled.

［本製袋包装機１の特徴］
（１）
本実施形態の製袋包装機１では、図３等に示すように、縦シール機構１５を構成するヒータベルト１６ａ、ヒータブロック１６ｂと、成形機構１３側に配置された面ファスナー１３ｃとを、フィルムＦの縦シール部分Ｆ１よりも両外側の領域へ付与される単位時間当たりの熱量が小さくなるように、配置している。
これにより、フィルムＦの縦シール部分Ｆ１に対してはシール処理に十分な熱量と圧力とが付与される一方、縦シール部分Ｆ１の両外側の領域については必要以上の熱量が付与されないようにすることができる。この結果、縦シール部分Ｆ１の周辺にもシール処理に必要な単位時間当たりの熱量、圧力が付与されることにより縦シール部分Ｆ１に沿ってしわ等が発生して商品の外観を悪化させることを回避することができる。
（２）
本実施形態の製袋包装機１では、図３に示すように、フィルムＦの縦シール部分Ｆ１に熱量と圧力とを付与してシール処理を行う構成部材として、縦シール部分Ｆ１の幅ｄとほぼ同等の幅ｄ１，ｄ３を有する面ファスナー１３ｃおよびヒータブロック１６ｂと、それらの幅ｄ，ｄ１，ｄ３よりも大きい幅ｄ２を有するヒータベルト１６ａとを用いている。
これにより、面ファスナー１３ｃとヒータベルト１６ａとの間に挟み込まれるフィルムＦの縦シール部分Ｆ１には、面ファスナー１３ｃの幅ｄ１の領域に大きな熱量と圧力とが付与される。一方、その両外側の領域は、面ファスナー１３ｃよりも幅が広いヒータベルト１６ａとは接触するものの、ヒータベルト１６ａには幅方向に図８に示すような温度勾配が形成され、挟み込む相手方の面ファスナー１３ｃが存在していないため、シール処理を行うために必要な熱量、圧力は付与されない。特に、面ファスナー１３ｃよりも両外側の領域では、断面形状が略円形のチューブ１３ｂに巻き掛けられたフィルムＦがヒータベルト１６ａの表面から離間していくため、熱量、圧力ともにフィルムＦに対して過剰に付与されることはない。
この結果、縦シール部分Ｆ１の両外側においてヒータベルト１６ａから過剰な熱量、圧力が付与されて、縦シール部分Ｆ１に沿ってしわやシール不良が発生することを防止して、商品の外観性が悪化してしまうことを回避することができる。
（３）
本実施形態の製袋包装機１では、図３に示すように、面ファスナー１３ｃが、縦シール部分Ｆ１の幅ｄとほぼ同じ幅を有している。
これにより、縦シール部分Ｆ１の両外側の領域では、ヒータベルト１６ａに対向する面ファスナー１３ｃが存在していないため、ヒータベルト１６ａからフィルムＦに対して付与される単位時間当たりの熱量および圧力は、縦シール部分Ｆ１の領域と比較して大幅に小さくなる。
特に、面ファスナー１３ｃよりも両外側の領域では、断面形状が略円形のチューブ１３ｂに巻き掛けられたフィルムＦがヒータベルト１６ａの表面から離間していくため、熱量、圧力ともにフィルムＦに対して過剰に付与されることはない。
この結果、縦シール部分Ｆ１の両外側においてヒータベルト１６ａからシール処理を行う際に付与される熱量、圧力と同等の熱量、圧力が付与されて、縦シール部分Ｆ１に沿ってしわやシール不良が発生することを防止して、商品の外観性が悪化してしまうことを回避することができる。 [Features of this bag making and packaging machine 1]
(1)
In the bag making and packaging machine 1 of the present embodiment, as shown in FIG. 3 and the like, a heater belt 16a and a heater block 16b constituting the vertical sealing mechanism 15 and a hook-and-loop fastener 13c disposed on the molding mechanism 13 side are used as a film. It arrange | positions so that the calorie | heat amount per unit time provided to the area | region of both sides rather than the vertical seal | sticker part F1 of F may become small.
Thereby, heat quantity and pressure sufficient for the sealing process are applied to the vertical seal portion F1 of the film F, while an amount of heat more than necessary is not applied to both outer regions of the vertical seal portion F1. be able to. As a result, wrinkles and the like are generated along the vertical seal portion F1 by deteriorating the appearance of the product by applying heat and pressure per unit time necessary for the sealing process around the vertical seal portion F1. It can be avoided.
(2)
In the bag making and packaging machine 1 of the present embodiment, as shown in FIG. 3, the width d of the vertical seal portion F <b> 1 is used as a constituent member for applying heat and pressure to the vertical seal portion F <b> 1 of the film F to perform the sealing process. A hook-and-loop fastener 13c and a heater block 16b having substantially the same widths d1 and d3 and a heater belt 16a having a width d2 larger than the widths d, d1 and d3 are used.
Thus, a large amount of heat and pressure are applied to the region of the width d1 of the surface fastener 13c on the vertical seal portion F1 of the film F sandwiched between the surface fastener 13c and the heater belt 16a. On the other hand, the outer regions are in contact with the heater belt 16a which is wider than the hook-and-loop fastener 13c, but the heater belt 16a has a temperature gradient as shown in FIG. Since the fastener 13c does not exist, the amount of heat and pressure necessary for performing the sealing process are not applied. In particular, in the regions outside both sides of the hook-and-loop fastener 13c, the film F wound around the tube 13b having a substantially circular cross section is separated from the surface of the heater belt 16a. It is not given excessively.
As a result, excessive heat and pressure are applied from the heater belt 16a on both outer sides of the vertical seal portion F1, thereby preventing wrinkles and seal defects from occurring along the vertical seal portion F1, thereby improving the appearance of the product. Deterioration can be avoided.
(3)
In the bag making and packaging machine 1 of the present embodiment, as shown in FIG. 3, the hook-and-loop fastener 13c has substantially the same width as the width d of the vertical seal portion F1.
Thereby, in the area | region of the both outer sides of the vertical seal | sticker part F1, since the hook_and_loop | surface fastener 13c which opposes the heater belt 16a does not exist, the calorie | heat amount and pressure per unit time provided with respect to the film F from the heater belt 16a are the following. As compared with the region of the vertical seal portion F1, it is significantly smaller.
In particular, in the regions outside both sides of the hook-and-loop fastener 13c, the film F wound around the tube 13b having a substantially circular cross section is separated from the surface of the heater belt 16a. It is not given excessively.
As a result, heat and pressure equivalent to the amount of heat and pressure applied when performing the sealing process from the heater belt 16a on both outer sides of the vertical seal portion F1 are applied, and wrinkles and seal failures occur along the vertical seal portion F1. Generation | occurrence | production can be prevented and it can avoid that the external appearance property of goods deteriorates.

［他の実施形態］
以上、本発明の一実施形態について説明したが、本発明は上記実施形態に限定されるものではなく、発明の要旨を逸脱しない範囲で種々の変更が可能である。 [Other Embodiments]
As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of invention.

（Ａ）
上記実施形態では、図３に示すように、縦シール部分Ｆ１の幅ｄ（図２参照）に対して、面ファスナー１３ｃの幅ｄ１とヒータブロック１６ｂの幅ｄ３とをほぼ同程度の幅とし、ヒータベルト１６ａの幅ｄ２を、これらの幅ｄ，ｄ１，ｄ３よりも大きく設定した例を挙げて説明した。しかし、本発明はこれに限定されるものではない。
例えば、図９に示すように、縦シール部分Ｆ１の幅ｄに対して、面ファスナー１３ｃの幅ｄ１をほぼ同程度の幅とし、ヒータベルト１６ａの幅ｄ２およびヒータブロック１１６ｂの幅ｄ４を、これらの幅ｄ，ｄ１よりも大きく設定してもよい。
この場合でも、面ファスナー１３ｃの幅ｄ１については、縦シール部分Ｆ１の幅ｄと同程度に設定されているため、ヒータベルト１６ａと面ファスナー１３ｃとの間に挟み込まれるフィルムＦの重なり部分Ｆ２の幅は、縦シール部分Ｆ１の幅ｄとほぼ同等となる。この結果、ヒータベルト１６ａからは縦シール部分Ｆ１に相当する部分に局所的に熱量が付与されることになるため、縦シール部分の周辺にしわやシール不良等の不具合が発生することを回避することができるという、上記と同様の効果を得ることができる。
ただし、ヒータベルト１６ａの表面温度に上述した温度勾配を形成することで、縦シール部分Ｆ１以外へ過剰に単位時間当たりの熱量が付与されることを回避できるという点では、上記実施形態のように、ヒータブロックの幅ｄ３を縦シール部分Ｆ１の幅ｄと同程度に設定することがより好ましい。
（Ｂ）
上記実施形態では、ヒータベルト１６ａとの間にフィルムＦの重なり部分Ｆ２を挟み込んでシール処理を行う受け部材として、フィルムＦとの接触面が平らな面ファスナー１３ｃを用いた例を挙げて説明した。しかし、本発明はこれに限定されるものではない。
例えば、図１０（ａ）に示すように、面ファスナー１１３ｃの断面形状として、フィルムとの接触面側に相当する面１１３ｃａを湾曲状とし、この湾曲状の面１１３ｃａとヒータベルト１６ａとの間にフィルムＦの重なり部分Ｆ２を挟み込むようにしてシール処理を行ってもよい。
この場合には、縦シール部分Ｆ１の幅ｄに相当する中央部分付近についてはフィルムＦに対して十分な単位時間当たりの熱量と圧力とを付与するとともに、縦シール部分Ｆ１の外側の領域については付与される圧力を小さくすることができる。この結果、対向するヒータベルトやヒータブロックの幅に関わらず、面ファスナー１１３ｃ側の形状によって、フィルムＦにおける縦シール部分Ｆ１の周辺領域への過度な熱量や圧力の付与を回避することができるため、簡易な構成により縦シール部分周辺におけるしわやシール不良の発生を容易に回避することができる。
さらに、受け部材の断面形状としては、図１０（ｂ）に示すように、面ファスナー１１３ｃの湾曲状の面１１３ｃａにおける中央部分を平らな面２１３ｃａとし、その両側に湾曲状の面２１３ｃｂを形成してもよい。
この場合には、縦シール部分Ｆ１に相当する幅の領域には圧力と熱量とを均等に付与するとともに、その両側の周辺領域に付与される熱量、圧力を小さくすることができるため、さらに効果的に、簡易な構成によって縦シール部分周辺におけるしわやシール不良の発生を容易に回避することができる。
（Ｃ）
上記実施形態では、ヒータベルト１６ａに近接配置されたヒータブロック１６ｂとして、略直方体の加熱体を用いた例を挙げて説明した。しかし、本発明はこれに限定されるものではない。
例えば、図１１に示すように、断面形状が略Ｔ字型のヒータブロック１１６ｃとし、フィルムＦの重なり部分Ｆ２と接触する側のヒータベルト１６ａに対して、略Ｔ字型の幅が広い方の部分１１６ｃａを配置してもよい。
この場合には、幅が広い方の部分１１６ｃａでは、幅が狭い側の部分１１６ｃｂにつながっていない両端部が中央部と比較して温度が低くなり易い。このため、略Ｔ字型のヒータブロック１１６ｃにおいて、中央部分から両端にかけて温度が低くなる温度勾配を形成することができる。この結果、簡易な構成により、縦シール部分の周辺におけるしわやシール不良等の発生を容易に回避することができる。
（Ｄ）
上記実施形態では、受け部材としての面ファスナー１３ｃとの間にフィルムＦの重なり部分Ｆ２を挟み込んでシール処理を行うヒータベルト１６ａとして、フィルムＦとの接触面が平らなものを用いた例を挙げて説明した。しかし、本発明はこれに限定されるものではない。
例えば、図１２に示すように、フィルムＦの重なり部分Ｆ２と接触する側の面を湾曲状の面１１６ａａとしたヒータベルト１６ａを用いてもよい。
この場合には、フィルムＦに対して湾曲状の面１１６ａａの中央部分から付与される単位時間当たりの熱量と圧力とを、その両端部分よりも大きくすることができる。この結果、縦シール部分の中心部分を湾曲状の面１１６ａａの中心部分に合わせて配置することで、縦シール部分へは十分な熱量と圧力とが付与される一方、その両端の周辺領域には十分な圧力が付与されないようにすることができる。
さらに、図１０（ｂ）の面ファスナー２１３ｃと同様に、湾曲面の中央部付近に平らな面を形成したヒータベルト１６ａを用いることも可能である。
（Ｅ）
上記実施形態では、面ファスナー１３ｃとヒータブロック１６ｂとの間にフィルムＦの重なり部分Ｆ２を挟み込むようにしてシール処理を行う例を挙げて説明した。しかし、本発明はこれに限定されるものではない。
シール処理を行う形態としては、例えば、フィンによってシール部分を挟み込むようにしてシール処理を行ってもよいし、重なり部分としても折り返し部分を作らずに単純にオーバーラップさせた部分をシール処理するようにしてもよい。
（Ｆ）
上記実施形態では、ヒータベルト１６ａとの間にフィルムＦの重なり部分Ｆ２を挟み込んでシール処理を行う面ファスナー１３ｃが、縦シール機構１５ではなく成形機構１３側に設けられている例を挙げて説明した。しかし、本発明はこれに限定されるものではない。
面ファスナーは縦シール処理に不可欠な構成であることから、縦シール機構１５側の構成部材として考えることもできる。
（Ｇ）
上記実施形態では、フィルムＦの縦シール部分に接触して熱シールを行う接触部として、ヒータベルト１６ａを用いた例を挙げて説明した。しかし、本発明はこれに限定されるものではない。
例えば、図１３に示すように、ヒータ等の加熱部と一体化されたヒートブロック２１６ｂを、フィルムＦの重なり部分Ｆ２に対して押し付けるように間欠動作させて接触させ、縦シールを行う縦シール機構であってもよい。 (A)
In the above embodiment, as shown in FIG. 3, the width d1 of the hook-and-loop fastener 13c and the width d3 of the heater block 16b are substantially the same as the width d of the vertical seal portion F1 (see FIG. 2). The example in which the width d2 of the heater belt 16a is set larger than these widths d, d1, and d3 has been described. However, the present invention is not limited to this.
For example, as shown in FIG. 9, the width d1 of the hook-and-loop fastener 13c is substantially the same as the width d of the vertical seal portion F1, and the width d2 of the heater belt 16a and the width d4 of the heater block 116b are It may be set larger than the widths d and d1.
Even in this case, the width d1 of the hook-and-loop fastener 13c is set to be approximately the same as the width d of the vertical seal portion F1, and therefore, the overlapping portion F2 of the film F sandwiched between the heater belt 16a and the hook-and-loop fastener 13c. The width is substantially equal to the width d of the vertical seal portion F1. As a result, since heat is locally applied from the heater belt 16a to the portion corresponding to the vertical seal portion F1, it is possible to avoid the occurrence of defects such as wrinkles and defective seals around the vertical seal portion. The same effect as described above can be obtained.
However, by forming the above-described temperature gradient in the surface temperature of the heater belt 16a, it is possible to avoid that an excessive amount of heat per unit time is applied to other than the vertical seal portion F1, as in the above embodiment. More preferably, the width d3 of the heater block is set to be approximately the same as the width d of the vertical seal portion F1.
(B)
In the above-described embodiment, an example in which the hook-and-loop fastener 13c having a flat contact surface with the film F is used as the receiving member that performs the sealing process by sandwiching the overlapping portion F2 of the film F with the heater belt 16a. . However, the present invention is not limited to this.
For example, as shown in FIG. 10A, as the cross-sectional shape of the hook-and-loop fastener 113c, a surface 113ca corresponding to the contact surface side with the film is curved, and the curved surface 113ca and the heater belt 16a are interposed between the curved surface 113ca and the heater belt 16a. The sealing process may be performed so as to sandwich the overlapping portion F2 of the film F.
In this case, a sufficient amount of heat and pressure per unit time is applied to the film F in the vicinity of the central portion corresponding to the width d of the vertical seal portion F1, and an area outside the vertical seal portion F1 is applied. The applied pressure can be reduced. As a result, it is possible to avoid applying an excessive amount of heat or pressure to the peripheral region of the vertical seal portion F1 in the film F depending on the shape of the hook-and-loop fastener 113c regardless of the width of the opposing heater belt or heater block. With a simple configuration, the occurrence of wrinkles and seal defects around the vertical seal portion can be easily avoided.
Furthermore, as a cross-sectional shape of the receiving member, as shown in FIG. 10B, the central portion of the curved surface 113ca of the hook-and-loop fastener 113c is a flat surface 213ca, and curved surfaces 213cb are formed on both sides thereof. May be.
In this case, the pressure and heat quantity can be evenly applied to the area having the width corresponding to the vertical seal portion F1, and the heat quantity and pressure applied to the peripheral areas on both sides can be reduced. In particular, it is possible to easily avoid the occurrence of wrinkles and seal defects around the vertical seal portion with a simple configuration.
(C)
In the above embodiment, the heater block 16b disposed close to the heater belt 16a has been described as an example using a substantially rectangular heating element. However, the present invention is not limited to this.
For example, as shown in FIG. 11, the heater block 116c having a substantially T-shaped cross-section is formed, and the heater belt 16a on the side in contact with the overlapping portion F2 of the film F has a wider T-shaped width. The portion 116ca may be disposed.
In this case, in the wider portion 116ca, the temperature is likely to be lower at both end portions not connected to the narrower portion 116cb than in the central portion. For this reason, in the substantially T-shaped heater block 116c, it is possible to form a temperature gradient in which the temperature decreases from the central portion to both ends. As a result, it is possible to easily avoid the occurrence of wrinkles and seal defects around the vertical seal portion with a simple configuration.
(D)
In the said embodiment, the example which used the thing with a flat contact surface with the film F is given as the heater belt 16a which pinches | interposes the overlap part F2 of the film F between the surface fasteners 13c as a receiving member, and performs a sealing process. Explained. However, the present invention is not limited to this.
For example, as shown in FIG. 12, a heater belt 16a having a curved surface 116aa as a surface in contact with the overlapping portion F2 of the film F may be used.
In this case, the amount of heat and pressure per unit time applied to the film F from the central portion of the curved surface 116aa can be made larger than both end portions. As a result, by arranging the central portion of the vertical seal portion so as to match the central portion of the curved surface 116aa, a sufficient amount of heat and pressure are applied to the vertical seal portion, while the peripheral regions at both ends thereof It is possible to prevent a sufficient pressure from being applied.
Furthermore, similarly to the surface fastener 213c of FIG. 10B, it is also possible to use a heater belt 16a having a flat surface near the center of the curved surface.
(E)
In the above embodiment, an example in which the sealing process is performed such that the overlapping portion F2 of the film F is sandwiched between the hook-and-loop fastener 13c and the heater block 16b has been described. However, the present invention is not limited to this.
As a form for performing the sealing process, for example, the sealing process may be performed by sandwiching the sealing part with fins, or the overlapping part may be simply subjected to the sealing process without forming the folded part as the overlapping part. It may be.
(F)
In the embodiment described above, an example in which the surface fastener 13c that performs the sealing process by sandwiching the overlapping portion F2 of the film F with the heater belt 16a is provided on the molding mechanism 13 side instead of the vertical sealing mechanism 15 will be described. did. However, the present invention is not limited to this.
Since the hook-and-loop fastener is indispensable for the vertical seal process, it can be considered as a component on the vertical seal mechanism 15 side.
(G)
In the said embodiment, the example using the heater belt 16a was given and demonstrated as a contact part which contacts the vertical seal | sticker part of the film F, and performs a heat seal. However, the present invention is not limited to this.
For example, as shown in FIG. 13, a vertical sealing mechanism that performs vertical sealing by bringing a heat block 216 b integrated with a heating unit such as a heater into contact with each other so as to press against the overlapping portion F <b> 2 of the film F. It may be.

本発明の縦シール機構は、縦シール部分の両側が過度に加熱されることを防止することができるため、縦シール部分に沿ってしわやシール不良等の不具合が発生することを回避することができるという効果を奏することから、包材を搬送しながらシールを行う各種シール装置に対して広く適用可能である。   Since the vertical seal mechanism of the present invention can prevent both sides of the vertical seal portion from being heated excessively, it is possible to avoid the occurrence of defects such as wrinkles and poor seals along the vertical seal portion. Since it produces the effect of being able to be performed, it can apply widely with respect to the various sealing devices which seal while conveying a packaging material.

本発明の一実施形態に係る製袋包装機の構成を示す概略図。Schematic which shows the structure of the bag making packaging machine which concerns on one Embodiment of this invention. 図１の製袋包装機が備えている縦シール機構を示す拡大図。The enlarged view which shows the vertical seal | sticker mechanism with which the bag making packaging machine of FIG. 1 is provided. 図２のＡ−Ａ線矢視断面図。FIG. 3 is a cross-sectional view taken along line AA in FIG. 2. 図２の縦シール機構を示す側面図。The side view which shows the vertical seal | sticker mechanism of FIG. 図２の縦シール機構を示す正面図。The front view which shows the vertical seal | sticker mechanism of FIG. 図２の縦シール機構が備えているプーリの形状を示す正面図。The front view which shows the shape of the pulley with which the vertical seal mechanism of FIG. 2 is provided. 図１の製袋包装機が備えている横シール機構を示す拡大図。The enlarged view which shows the horizontal sealing mechanism with which the bag making packaging machine of FIG. 1 is provided. 図２の縦シール機構に含まれるヒータベルトの幅方向における温度分布を示すグラフ。The graph which shows the temperature distribution in the width direction of the heater belt contained in the vertical seal | sticker mechanism of FIG. 本発明の他の実施形態に係る縦シール機構の構成を示す断面図。Sectional drawing which shows the structure of the vertical seal | sticker mechanism which concerns on other embodiment of this invention. （ａ），（ｂ）は、本発明のさらに他の実施形態に係る縦シール機構に含まれる受け部材の断面形状を示す断面図。(A), (b) is sectional drawing which shows the cross-sectional shape of the receiving member contained in the vertical seal | sticker mechanism which concerns on further another embodiment of this invention. 本発明のさらに他の実施形態に係る縦シール機構に含まれるヒータベルト、ヒータブロックの断面形状を示す断面図。Sectional drawing which shows the cross-sectional shape of the heater belt and heater block which are contained in the vertical seal | sticker mechanism which concerns on further another embodiment of this invention. 本発明のさらに他の実施形態に係る縦シール機構に含まれるヒータベルト、ヒータブロックの断面形状を示す断面図。Sectional drawing which shows the cross-sectional shape of the heater belt and heater block which are contained in the vertical seal | sticker mechanism which concerns on further another embodiment of this invention. 本発明のさらに他の実施形態に係る縦シール機構に含まれるヒートブロック等の断面形状を示す断面図。Sectional drawing which shows cross-sectional shapes, such as a heat block contained in the vertical seal | sticker mechanism which concerns on further another embodiment of this invention.

符号の説明Explanation of symbols

１ 製袋包装機
１０ 製袋部
１３ 成形機構
１３ａ フォーマ
１３ｂ チューブ
１３ｃ 面ファスナー（受け部材）
１４ プルダウンベルト機構
１４ａ 駆動ローラ
１４ｂ 従動ローラ
１４ｃ ベルト
１５ 縦シール機構
１６ａ ヒータベルト（接触部、回転帯体）
１６ｂ ヒータブロック（加熱部）
１６ｃ プーリ
１６ｅ ヒータバー
１６ｆ 回転軸
１７ 横シール機構
２０ 制御部
５１ シールジョー
１１３ｃ 面ファスナー
１１３ｃａ 面
１１６ａ ヒータベルト（接触部、回転帯体）
１１６ａａ 面
１１６ｂ ヒータブロック
１１６ｃ ヒータブロック
２１３ｃ 面ファスナー
２１３ｃａ 面
２１３ｃｂ 面
２１６ａ ヒートブロック（接触部）
ｄ，ｄ１〜ｄ３ 幅
Ｆ フィルム（包材）
Ｆ１ 縦シール部分
Ｆ２ 重なり部分
Ｂ 袋 DESCRIPTION OF SYMBOLS 1 Bag making packaging machine 10 Bag making part 13 Forming mechanism 13a Former 13b Tube 13c Surface fastener (receiving member)
14 Pull-down belt mechanism 14a Drive roller 14b Driven roller 14c Belt 15 Vertical seal mechanism 16a Heater belt (contact portion, rotating belt)
16b Heater block (heating unit)
16c Pulley 16e Heater bar 16f Rotating shaft 17 Horizontal seal mechanism 20 Control unit 51 Seal jaw 113c Surface fastener 113ca Surface 116a Heater belt (contact portion, rotating belt)
116aa surface 116b heater block 116c heater block 213c surface fastener 213ca surface 213cb surface 216a heat block (contact portion)
d, d1 to d3 Width F film (wrapping material)
F1 Vertical seal part F2 Overlapping part B Bag

Claims (8)

筒状に形成された包材を搬送しながら、前記包材の重なり部分をシールする縦シール機構であって、
前記包材の搬送方向に沿って形成される前記包材の重なり部分に接触する接触部と、
前記接触部を加熱する加熱部と、
前記接触部との間に前記包材を挟み込むようにして縦シールを行う受け部材と、
を備えており、
前記接触部と前記加熱部と前記受け部材とは、前記包材の搬送方向に交差する方向における前記縦シール部分の両側に向かって、前記接触部から前記包材に対して付与される単位時間当たりの熱量が少なくなるように構成されている、縦シール機構。 A vertical sealing mechanism that seals the overlapping portion of the packaging material while conveying the packaging material formed in a cylindrical shape,
A contact portion in contact with an overlapping portion of the packaging material formed along the conveying direction of the packaging material;
A heating part for heating the contact part;
A receiving member that performs vertical sealing so as to sandwich the packaging material between the contact portion;
With
The said contact part, the said heating part, and the said receiving member are unit time provided with respect to the said packaging material from the said contact part toward the both sides of the said vertical seal part in the direction which cross | intersects the conveyance direction of the said packaging material. Longitudinal sealing mechanism configured to reduce the amount of heat per unit. 前記加熱部と前記受け部材とは、前記包材に形成される前記縦シール部分の幅と略等しい幅を有しており、
前記接触部は、前記縦シール部分の幅よりも大きい幅を有している、
請求項１に記載の縦シール機構。 The heating part and the receiving member have a width substantially equal to the width of the vertical seal portion formed in the packaging material,
The contact portion has a width larger than the width of the vertical seal portion.
The vertical seal mechanism according to claim 1. 前記受け部材は、前記縦シール部分の幅と略等しい幅を有している、
請求項１に記載の縦シール機構。 The receiving member has a width substantially equal to the width of the vertical seal portion.
The vertical seal mechanism according to claim 1. 前記受け部材は、幅方向における両側が前記接触部と離間する湾曲状の接触面を有している、
請求項１に記載の縦シール機構。 The receiving member has a curved contact surface whose both sides in the width direction are separated from the contact portion.
The vertical seal mechanism according to claim 1. 前記接触部は、前記縦シール部分との接触部分よりも外側の領域にかけて前記包材と離間する湾曲面を有している、
請求項１に記載の縦シール機構。 The contact portion has a curved surface that is separated from the packaging material over a region outside the contact portion with the vertical seal portion.
The vertical seal mechanism according to claim 1. 前記加熱部は、前記包材の搬送方向に対して直交する平面による断面形状が、略Ｔ字型となっており、前記Ｔ字型の凸側の面が前記接触部と近接配置されている、
請求項１から５のいずれか１項に記載の縦シール機構。 The heating section has a substantially T-shaped cross section by a plane orthogonal to the conveying direction of the packaging material, and the convex side surface of the T-shape is disposed close to the contact section. ,
The longitudinal seal mechanism according to any one of claims 1 to 5. 前記接触部は、前記加熱部の周りを回転する回転帯体である、
請求項１から６のいずれか１項に記載の縦シール機構。 The contact portion is a rotating belt that rotates around the heating portion.
The vertical seal mechanism according to any one of claims 1 to 6. 前記接触部は、前記加熱部と一体的に構成されるヒートブロックである、
請求項１から６のいずれか１項に記載の縦シール機構。 The contact portion is a heat block configured integrally with the heating portion.
The vertical seal mechanism according to any one of claims 1 to 6.
JP2006280335A 2006-10-13 2006-10-13 Vertical seal mechanism Pending JP2008094456A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP2006280335A JP2008094456A (en) 2006-10-13 2006-10-13 Vertical seal mechanism
US12/440,692 US20100043352A1 (en) 2006-10-13 2007-10-05 Longitudinal sealing mechanism
GB0906584A GB2455949B (en) 2006-10-13 2007-10-05 Longitudinal sealing mechanism
BRPI0719171-5A2A BRPI0719171A2 (en) 2006-10-13 2007-10-05 LONGITUDINAL SEALING MECHANISM
AU2007305506A AU2007305506A1 (en) 2006-10-13 2007-10-05 Longitudinal sealing mechanism
PCT/JP2007/069628 WO2008044662A1 (en) 2006-10-13 2007-10-05 Vertical seal mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006280335A JP2008094456A (en) 2006-10-13 2006-10-13 Vertical seal mechanism

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JP (1) JP2008094456A (en)
AU (1) AU2007305506A1 (en)
BR (1) BRPI0719171A2 (en)
GB (1) GB2455949B (en)
WO (1) WO2008044662A1 (en)

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GB2455949A (en) 2009-07-01
GB2455949B (en) 2011-06-15

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