JPWO2006061939A1 - 包装機及び包装方法 - Google Patents

包装機及び包装方法 Download PDF

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Publication number
JPWO2006061939A1
JPWO2006061939A1 JP2006547665A JP2006547665A JPWO2006061939A1 JP WO2006061939 A1 JPWO2006061939 A1 JP WO2006061939A1 JP 2006547665 A JP2006547665 A JP 2006547665A JP 2006547665 A JP2006547665 A JP 2006547665A JP WO2006061939 A1 JPWO2006061939 A1 JP WO2006061939A1
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Japan
Prior art keywords
packaging
knife
phase angle
cutting device
layer
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JP2006547665A
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English (en)
Inventor
近野　秀俊
秀俊 近野
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Tetra Laval Holdings and Finance SA
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Tetra Laval Holdings and Finance SA
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Publication of JPWO2006061939A1 publication Critical patent/JPWO2006061939A1/ja
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/22—Safety devices specially adapted for cutting 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
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3604—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint
    • B29C65/3656—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint being a layer of a multilayer part to be joined, e.g. for joining plastic-metal laminates
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3672—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint
    • B29C65/3676—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint being metallic
    • B29C65/368—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint being metallic with a polymer coating
    • 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
    • B29C65/74—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
    • B29C65/745—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 a single unit having both a severing tool and a welding tool
    • B29C65/7451—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 a single unit having both a severing tool and a welding tool the severing tool and the welding tool being movable with respect to one-another
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—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
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • 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
    • B29C66/70—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
    • B29C66/72—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 structure of the material of the parts to be joined
    • B29C66/723—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 structure of the material of the parts to be joined being multi-layered
    • B29C66/7232—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 structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
    • B29C66/72321—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 structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of metals or their alloys
    • 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
    • B29C66/70—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
    • B29C66/72—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 structure of the material of the parts to be joined
    • B29C66/723—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 structure of the material of the parts to be joined being multi-layered
    • B29C66/7232—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 structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
    • B29C66/72327—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 structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of natural products or their composites, not provided for in B29C66/72321 - B29C66/72324
    • B29C66/72328—Paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81427—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81457—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a block or layer of deformable material, e.g. sponge, foam, rubber
    • 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
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9161—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux
    • B29C66/91651—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux by controlling or regulating the heat generated by Joule heating or induction heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • 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
    • B65B51/22—Applying or generating heat or pressure or combinations thereof by friction or ultrasonic or high-frequency electrical means, i.e. by friction or ultrasonic or induction welding
    • B65B51/227—Applying or generating heat or pressure or combinations thereof by friction or ultrasonic or high-frequency electrical means, i.e. by friction or ultrasonic or induction welding by induction welding
    • 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
    • B65B51/26—Devices specially adapted for producing transverse or longitudinal seams in webs or tubes
    • B65B51/30—Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes
    • 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
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/04—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages
    • B65B61/06—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
    • B26D1/06—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
    • B26D1/065—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates for thin material, e.g. for sheets, strips or the like
    • 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
    • B29C66/70—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
    • B29C66/71—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 composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00—Layered products
    • B29L2009/003—Layered products comprising a metal layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7162—Boxes, cartons, cases
    • B29L2031/7166—Cartons of the fruit juice or milk type, i.e. containers of polygonal cross sections formed by folding blanks into a tubular body with end-closing or contents-supporting elements, e.g. gable type containers

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Package Closures (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)

Abstract

包装機及び包装方法は、切断装置のナイフによる誘導加熱への悪影響を未然に防止し、また、ナイフの不都合及びその不都合による内容物の漏れを監視して包装充填機械をコントロールすることを可能にする【解決手段】包装機は、包装材料同志を互いにシールするヒートシール装置及び包装材料を導電性ナイフで切断する切断装置を有する包装機であって、導電性材料層に印加される高周波電流を発生させる誘導加熱装置からの出力をモニターした位相角として検知する位相角検知手段、及び検知した位相角データに基づき切断装置を監視するナイフモニターを有するように構成したものである。

Description

本発明は、ジュースや牛乳などの液体食品などを充填した紙容器などに包装材料から包装・充填する包装機及び包装方法に関する。
液体食品などを充填した紙容器を得る包装充填装置は、図３及び図４に示すように、通常、低密度ポリエチレンなどの熱可塑性材料シーラント層とアルミ箔などの導電性材料層と紙などの繊維材料支持層とが積層されたウェブ状包装材料１を準備し、この包装材料１を筒状に形成し、その筒の中に液体食品を充填し、その筒状包装材料を外からそれぞれ２本の並列したシールジョー２、２とカウンタージョー３、３とで挟んで互いに重ね合わせて、シールジョーとカウンタージョーとで挟持しながら包装材料を引き下げながら、誘導加熱装置によって、シールジョーから高周波電流を導電性材料層に印加して熱可塑性材料シーラント層を加熱溶融して、包装材料同志を所定間隔毎に互いにシールし、そのシール包装材料を所定間隔毎にナイフ４で切断し、シールジョーとカウンタージョーとが包装材料から離れ、図４の矢印に示すように、それぞれ上方に戻り、下に落下する容器５を得、この容器のフラップ部分を折り畳んで最終形状に成形する。
この誘導加熱装置は、例えば、3φ200Vなどの電源をいったん直流に変換し、電子管やサイリスタ、MOSFET、IGBTなどの素子により数100Hz〜数MHzの高周波エネルギーを発生させる高周波電源と、高周波電源で発生した高周波エネルギーを、負荷であるコイルに必要な電圧・電流に合わせる「整合」を受け持つ整合部とからなる。
上記包装充填装置においては、シールジョーがこの誘導加熱装置のコイルに相当する。
コイルのシールジョーに高周波電流を流すことにより発生した磁束が、ウェブ状包装材料のアルミ箔導電性材料層の導電体と交差すると、導電体内に高周波の循環電流（渦電流）が誘起し、この電流が導電体の固有抵抗にしたがって流れ、発熱を起こす。
上記のシール装置のシールジョーに突条を設けて良好なシール帯域を得、このシール帯域を切断する装置が提案されている。（特許文献１参照）
シールした包装材料を所定間隔毎にナイフで切断する切断装置は、シールジョーとカウンタージョーで挟持したままヒートシールし、引く続いてナイフを、図４の矢印に示すような往復運動、若しくは回転運動させて包装材料を切断する。
特開平０７−１６４５２３号公報
上記従来技術では、切断装置と誘導加熱装置とがそれらの動作に関して連動する様の設定されている。すなわち、加熱し冷却してシールを完了した後ただちに、ナイフによる切断が行われる。しかしながら、金属製の導電性ナイフがシールすべき包装材料の導電性材料層の近傍に存在しながら誘導加熱を行うと、シールジョーから発生した磁束が導電性ナイフとも交差して、誘導加熱の条件を狂わせ、良好なシールを得ることができない恐れがある。
しかも、ナイフ駆動手段の故障等によってナイフが突出して切断モードの位置に留まり、発生磁束がナイフとも交差して誘導加熱の出力を狂わせ、良好にシールされていないにもかかわらず、ナイフにって切断されることによって、内容物が不良シールから漏れる恐れさえある。
本発明は、切断装置のナイフによる誘導加熱への悪影響を未然に防止し、また、ナイフの不都合及びその不都合による内容物の漏れを監視して包装充填機械をコントロールすることを可能にする包装機及び包装方法を提供することを目的とする。
この課題を解決する本発明の包装機は、熱可塑性材料シーラント層と導電性材料層と繊維材料支持層とが積層された長尺の包装材料を互いに重ね合わせて、シールジョーから高周波電流を導電性材料層に印加して熱可塑性材料シーラント層を加熱溶融して、包装材料同志を所定間隔毎に互いにシールするヒートシール装置及びシールされた包装材料を所定間隔毎にナイフで切断する切断装置を有する包装機であって、
切断装置のナイフがシールされた包装材料部分を切断する導電性ナイフであって、
導電性材料層に印加される高周波電流を発生させる誘導加熱装置からの出力をモニターした位相角として検知する位相角検知手段、及び
検知した位相角データに基づき切断装置を監視するナイフモニター
を有することを特徴とする。
この発明の包装方法は、熱可塑性材料シーラント層と導電性材料層と繊維材料支持層とが積層された長尺の包装材料を互いに重ね合わせて、ヒートシール装置によって、高周波電流を導電性材料層にシールジョーから印加して熱可塑性材料シーラント層を加熱溶融して、包装材料同志を所定間隔毎に互いにシールし、シールされた包装材料を所定間隔毎に切断装置のナイフで切断する方法であって、
切断装置の導電性ナイフでシールされた包装材料部分を切断し、
導電性材料層に印加される高周波電流を発生させる誘導加熱装置からの出力を位相角検知手段でモニターした位相角として検知し、
検知した位相角データに基づきナイフモニターで切断装置を監視する
を有することを特徴とする。
以上のように本発明によれば、以下の作用動作によって有利な効果が得られる。
ポリエチレン、ポリプロピレン、ポリエステルなどの熱可塑性材料シーラント層とアルミ箔などの導電性材料層と紙などの繊維材料支持層と、好ましくは熱可塑性材料外層とが積層された例えばウェブ状の包装材料を準備する。この包装材料をチューブ状に形成し、そのチューブ中に液体食品を充填し、その筒状包装材料を外からシールジョーとカウンタージョーとで挟んで互いに重ね合わせる。シールジョーとカウンタージョーとで挟持しながら包装材料を引き下げる。
誘導加熱装置によって、コイルのシールジョーに高周波電流を流すことにより発生した磁束が、ウェブ状包装材料のアルミ箔導電性材料層の導電体と交差し、導電体内に高周波の渦電流が誘起し、導電体の固有抵抗にしたがって発熱を起こす。導電性材料層が加熱して熱可塑性材料シーラント層を加熱溶融する。
この加熱に際して、導電性材料層に印加される高周波電流を発生させる誘導加熱装置からの出力を位相角検知手段でモニターした位相角として検知する。
誘導加熱装置の出力電力及び出力電流など出力は、金属製導電性ナイフがシールすべき包装材料の導電性材料層の近傍に存在しながら誘導加熱した場合でも、モニターされるデータとしては大きく変動せず、ナイフの位置異常を現さない。意外にも、位相角はシールジョーから発生した磁束が導電性ナイフとも交差して誘導加熱の変化を顕著に現す。
この発明において、検知した位相角データに基づきナイフモニターで切断装置を監視する。すなわち、位相角データが異常である場合、包装機の一時停止、操作員への異常発生警報など措置を執ることを可能にする。
異常でない場合、包装材料同志を所定間隔毎に互いにシールし、切断装置がそのシール包装材料を所定間隔毎にナイフで切断して容器を得、必要に応じて、この容器のフラップ部分を折り畳んで最終形状に成形する。
以下、本発明の実施の形態について図面を参照しながら詳細に説明する。
図３は、この発明の包装機及び包装方法に用いることができる包装充填システムの一形態の概略図である。
この形態において、ウェブ状包装材料のリール１ａからウェブ状包装材料１を繰り出し、このウェブ状包装材料１をチューブ状に成形し、そのチューブ状包装材料１ｂ内に充填パイプ３１から液体食品等の内容物を充填する。
その包装材料を外側からシールジョー２とカウンタージョー３（図示せず）とで挟んで互いに重ね合わせ、誘導加熱装置によって、熱可塑性材料シーラント層を加熱溶融し、所定間隔毎に互いにシールしする。次いで、ナイフ４で切断して容器５を得、必要に応じて、この容器のフラップ部分を折り畳んで最終形状に成形する。
図１は、この発明の包装機及び包装方法に用いることができる包装充填システムの一形態における誘導加熱装置及び切断装置の概略断面図である。
この形態では、チューブ状包装材料１を外からそれぞれ２本の並列したシールジョー２、２とカウンタージョー３、３とで挟んで互いに重ね合わせて、誘導加熱装置（図示せず）によって、シールジョーから高周波の磁束を発生させて、包装材料１の導電性材料層を加熱して熱可塑性材料シーラント層を加熱溶融する。次いで、シールされた２本の包材箇所の間を切断装置のナイフ４で切断する。
図２は、この発明の包装機及び包装方法に用いることができる包装充填システムの一形態における誘導加熱装置及び切断装置の動作を説明する為の概略断面図である。
この形態では、チューブ状包装材料１を外からそれぞれ２本の並列したシールジョー２、２とカウンタージョー３、３とで挟んで互いに重ね合わせて、誘導加熱装置２１によって、シールジョー２、２から高周波の磁場２０ａ，２０ｂを発生させて、包装材料１の導電性材料層を加熱して熱可塑性材料シーラント層を加熱溶融する。
図２の上半分と下半分とは、ナイフ４の位置が異なる。図２の上半分は、ナイフが正常な位置にある状態、すなわち、誘導加熱時にナイフが後退して包装材料の近傍に無い状態を示す。他方、下半分は、ナイフが正常でない位置に留まっている状態、すなわち、誘導加熱時にナイフがナイフ駆動装置の故障などにより包装材料切断モードの位置に留まったままの状態を示す。
図２の上半分と下半分の動作を説明して本発明を詳細に説明する。
図２の上半分に関しては、誘導加熱装置２１が高周波エネルギーをコイルのシールジョー2aに印可し、シールジョーに高周波電流を流すことにより発生した磁界20aが、ウェブ状包装材料のアルミ箔層の導電体と交差し高周波の渦電流を誘起して発熱を起こす。
これに対して、図２の下半分では、誘導加熱装置２１が高周波エネルギーをコイルのシールジョー2bに印可し、シールジョーに高周波電流を流すことにより磁界20bを発生させる。しかし、近傍に導電性ナイフ４があるために、ナイフ４にも磁界が及び、磁界の分布、強度などが正常な場合と相違する。なお、図２の上半分と下半分との磁界20aと20bとは、理解の為に相違する形状に図解されているが、実際の磁界と異なる。
近傍の導電性ナイフ４の存在による誘導加熱への影響は、誘導加熱装置２１から高周波エネルギー、高周波電流の位相角の変動として顕著に現れる。この変化を位相角検知手段２２でモニターした位相角として検知しする。
この形態において、検知した位相角データに基づきナイフの異常正常を判定して、ナイフモニター（図示せず）で切断装置を監視する。すなわち、位相角データが異常である場合、包装機の一時停止、操作員への異常発生警報など措置を執ることを可能にする。
上述のように、切断装置のナイフによる誘導加熱への悪影響を未然に防止し、また、ナイフの不都合及びその不都合による内容物の漏れを監視して包装充填機械をコントロールすることを可能にする。
なお、本発明は前記実施の形態に限定されるものではなく、本発明の趣旨に基づいて種々変形させることが可能であり、それらを本発明の範囲から排除するものではない。
この発明の包装機及び包装方法は、ジュースや牛乳などの液体食品などを充填した紙容器などに包装材料から包装・充填することに用いることができる。
この発明に用いることができる包装充填システムの一形態における誘導加熱装置及び切断装置の概略断面図である。 この発明に用いることができる包装充填システムの一形態における誘導加熱装置及び切断装置の動作を説明する為の概略断面図である。 この発明に用いることができる包装充填システムの一形態の概略図である。 包装充填システムの一形態における誘導加熱装置及び切断装置の概略断面図である。
符号の説明
１ ・・・包装材料
２ ・・・シールジョー
３ ・・・カウンタージョー
４ ・・・ナイフ

Claims (2)

  1. 熱可塑性材料シーラント層と導電性材料層と繊維材料支持層とが積層された長尺の包装材料を互いに重ね合わせて、シールジョーから高周波電流を導電性材料層に印加して熱可塑性材料シーラント層を加熱溶融して、該包装材料同志を所定間隔毎に互いにシールするヒートシール装置及びシールされた該包装材料を所定間隔毎にナイフで切断する切断装置を有する包装機であって、
    該切断装置のナイフがシールされた包装材料部分を切断する導電性ナイフであって、
    導電性材料層に印加される高周波電流を発生させる誘導加熱装置からの出力をモニターした位相角として検知する位相角検知手段、及び
    検知した該位相角データに基づき該切断装置を監視するナイフモニター
    を有することを特徴とする包装機。
  2. 熱可塑性材料シーラント層と導電性材料層と繊維材料支持層とが積層された長尺の包装材料を互いに重ね合わせて、ヒートシール装置によって、高周波電流を導電性材料層にシールジョーから印加して熱可塑性材料シーラント層を加熱溶融して、該包装材料同志を所定間隔毎に互いにシールし、シールされた該包装材料を所定間隔毎に切断装置のナイフで切断する包装方法であって、
    該切断装置の導電性ナイフでシールされた包装材料部分を切断し、
    導電性材料層に印加される高周波電流を発生させる誘導加熱装置からの出力を位相角検知手段でモニターした位相角として検知し、
    検知した該位相角データに基づきナイフモニターで該切断装置を監視する
    を有することを特徴とする包装方法。
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BRPI0518514A2 (pt) 2008-11-25
EP1820732A1 (en) 2007-08-22
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WO2006061939A1 (ja) 2006-06-15
US20080092492A1 (en) 2008-04-24

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