JP3984078B2 - 流動食品を充填された包装材料の壁部をシールする超音波横断シール装置 - Google Patents

流動食品を充填された包装材料の壁部をシールする超音波横断シール装置 Download PDF

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JP3984078B2
JP3984078B2 JP2002066743A JP2002066743A JP3984078B2 JP 3984078 B2 JP3984078 B2 JP 3984078B2 JP 2002066743 A JP2002066743 A JP 2002066743A JP 2002066743 A JP2002066743 A JP 2002066743A JP 3984078 B2 JP3984078 B2 JP 3984078B2
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Prior art keywords
seal
packaging material
transverse
intermediate portion
jaws
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JP2002066743A
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JP2002326294A (ja
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アンデルスタット ヤン
カパッソ サルヴァトーレ
クヌットソン ケント
ヌアム ムゲニ
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テトラ ラバル ホールデイングス エ フイナンス ソシエテ アノニム
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • 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
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/74—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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/346—Making joints having variable thicknesses in the joint area, e.g. by using jaws having an adapted configuration
    • 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
    • B29C66/72327—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
    • B29C66/70—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
    • B29C66/7234—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 barrier layer
    • 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
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • 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
    • B29C66/81425—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 stepped, e.g. comprising a shoulder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81427—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81431—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 cavity, e.g. a groove
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81433—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/849—Packaging machines
    • 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
    • B65B51/225—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 ultrasonic welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—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
    • 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
    • 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
    • B29C66/81415—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
    • 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
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2711/00—Use of natural products or their composites, not provided for in groups B29K2601/00 - B29K2709/00, for preformed parts, e.g. for inserts
    • B29K2711/12—Paper, e.g. cardboard
    • B29K2711/123—Coated
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Package Closures (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Making Paper Articles (AREA)
  • Building Environments (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は流動食品を充填された包装材料の壁部をシールする超音波横断シール装置に関する。
【０００２】
【従来の技術】
上述した形式のシール装置は、例えばフルーツ・ジュース、ワイン、トマト・ソース、低温殺菌した長期保存（ＵＨＴ−超高温処理）ミルクなどの流動食品を包装する機械で使用されており、パッケージは長手方向にシールされたウェブで形成される包装材料の連続チューブから形成される。
【０００３】
包装材料は複層構造を有し、この構造は例えばポリエチレンの熱密着性プラスチック材料の層を両面に被覆された紙材料の層を含み、またＵＨＴミルクのような長期保存食品用の無菌パッケージの場合には、包装材料は熱密着性プラスチック材料の層に重ねたバリヤ材料の層を含み、バリヤ材料の層は最終的に食品に接触するパッケージ内面を形成する熱密着性プラスチック材料の別の層をさらに被覆される。
【０００４】
包装材料ウェブはリールから繰り出され、円筒形に折り畳まれ、長手方向にシールされて周知のように連続した垂直な長手方向にシールされたチューブを形成する。包装材料のチューブは連続して流動食品を充填された後、成形および横断シール・ユニットへ送られて個々のパッケージを形成される。成形およびシール・ユニットは前記横断シール装置を含み、各々の横断シール装置は枕形状のパックを形成するようにチューブをグリップして横断方向にシールする２つのジョーを含み、パック間のシール部分を切断することで枕形状のパックは互いに分離される。ジョーの一方は、ジョー間にグリップされた熱密着性プラスチック材料の分子を励振し、熱密着プラスチック材料を溶融して壁部をシールするために超音波振動発生器を含む。換言すれば、ジョーは超音波横断シール段階にてチューブの壁部を局部的に変形且つ圧縮する。
【０００５】
横断シール作業が完了したならば、包装材料チューブをシール部分の中央、または２つのシール部分の間に沿って切断するためにナイフが作動されて、包装材料チューブの下端から枕形状のパックが切り離される。
【０００６】
枕形状パックはその後最終折り畳みステーションへ給送され、そこで完成パッケージとして機械的に折り畳まれる。
【０００７】
超音波シールの効率はチューブの壁部にジョーが作用させる圧力に直接比例するので、ジョーはかなりの力で互いに押圧されて、壁部の接触部分、すなわちいわゆるシール部分に沿って比較的大きな圧力を作用させる。
【０００８】
横断シール部分の中央部分は、重ねてシールされた１つの壁部の２つの部分によって形成され且つ横断シール部分の厚さに局部的な変化を形成する長手方向のシールの一部分を含む。したがって横断シール部分の全体に沿ってできるだけ一定した圧力となることを保証するために、長手方向のシールの前記部分と接触するジョーは長手方向のシールと同じ幅のスロットを有する。
【０００９】
このスロットは、長手方向のシールがそのスロットと正確に整合されたときに横断シール部分の全体に沿って実質的に一定した圧力となることを保証する。したがって、長手方向のシールがスロットの側方へ僅かにずれた場合には、長手方向のシールはスロットではなくジョーの一部分に沿って部分的にグリップされることになり、横断シール部分の長手方向のシールを含まない部分がスロットによってグリップされ、これにより壁部の完全なシールを行うには不十分な圧力がジョーで与えられることになる。
【００１０】
さらに、複層包装材料の製造で厳密な公差を満足することが困難であり、費用もかかるために、包装材料の厚さは基準厚さに対してかなり変化する。この結果、スロットの深さは包装材料の平均的な厚さに単純に基づき、長手方向のシール箇所にて超音波横断シールを行うために要求される圧力を加えるために常に適当とはならない。
【００１１】
その結果、長手方向のシールの位置またはその直ぐ近くにおいて横断シールに亀裂が生じ、包装材料の無菌状態を害する可能性が生じる。
【００１２】
【発明が解決しようとする課題】
本発明の目的は、この技術分野で知られている欠点を解消するように設計され、特に完全且つ効果的な横断シールを得られる超音波横断シール装置を提供することである。
【００１３】
【課題を解決するための手段】
本発明によれば、請求項１に記載されたような流動食品を充填された包装材料の壁部をシールするための超音波横断シール装置が提供される。
【００１４】
溝の形成された中間部分が、長手方向のシールと、その長手方向のシールでない部分との両方において超音波横断シールを達成するために十分な圧力を伝えられることを本出願人は見い出した。
【００１７】
本発明の好ましい非制限的な実施例が添付図面を参照して例を挙げて記載される。
【００１８】
【発明の実施の形態】
図１は低温殺菌またはＵＨＴ（超高温処理）したミルク、フルーツ・ジュース、ワインなどの流動食品を包装する機械のための横断シール装置１を全体として示す。
【００１９】
図２を参照すれば、装置１は、それよりも上流にて熱密着性プラスチック材料を長手方向に折り畳み且つシールして構成され、流動食品を充填された包装材料のチューブ２から、流動食品の密封パッケージＣを形成する。したがってチューブ２は、図５に示されるように、幅がＬで包装材料の２つの重ねてシールされた部分によって形成された長手方向のシールＬＳを含む。
【００２０】
チューブ２は、知られているように軸線Ａに沿って延在する垂直方向の移送路Ｐに沿って装置１へ給送される。
【００２１】
図１を参照すれば、装置１は軸線Ａを横断する方向Ｄ１に延在する２つの向き合ったジョー３，４を含み、ジョーは添付図面に示されていない既知の形成シール・ユニットによって知られているように支持される。ジョー３はハンマー５と、ハンマー５に連結された超音波発生器６とを含み、ジョー４はハンマー５に向かい合うアンビル７と、切断装置８とを含む。
【００２２】
図２を参照すれば、チューブ２は移送路Ｐに沿って連続して給送され、ジョー３，４は知られているようにチューブ２の移送路Ｐに平行な部分Ｔを含むそれぞれの環状路（図示せず）に沿って前記ユニット（図示せず）により移動される。部分Ｔに沿ってジョー３，４は互いに押圧されてチューブ２を局部的に変形させてシールする。チューブ２は実質的に円筒形であり、チューブ２に沿って２つの互いに接触する壁部を形成するようにジョー３，４で変形される。
【００２３】
ハンマー５はＤ１方向に延在し、チューブ２の壁部を変形且つ圧縮するための、スロット１１を有する中央の部分１０と、実質的にチューブ２を変形して壁部を一体にする外側の部分１２とを含む。
【００２４】
アンビル７はＤ１方向に延在し、スロット１１と整合された間隙１３を有し、また切断装置８は、間隙１３内部に収容されてハンマー５のスロット１１に侵入するようにアンビル７に対して前後に移動可能で、横断方向のシールが行われたときに壁部を切断するナイフ１４を含む。ジョー３，４は、２つの部分１５で壁部を横断方向にシールし、２つの部分１５の間の、実質的に間隙１３およびスロット１１に整合された部分１６では壁部を離れた状態にしておく。
【００２５】
図２で、ジョー３，４は組み合って壁部の間の食品を追い払い、互いに押圧されて部分１５に圧力Ｐ１を発生し、この部分は発生器６で発生された超音波振動を掃射される。圧力Ｐ１と超音波振動の組み合わされた作用が熱密着性プラスチック材料を溶融し、シール部分１５にて壁部を密封シールする。アンビル７は、Ｄ１方向に延在している間隙１３の反対両側に配置された２つの隆起リブ１７を含み、隆起リブ１７が壁部に沿う横断シール部分１５を形成する。
【００２６】
図１を参照すれば、アンビル７の中央の部分に配置されてチューブ２の長手方向のシールＬＳの位置で圧力Ｐ１を壁部に伝えるための部分１８を各リブ１７は含む。図３を参照すれば、リブ１７の部分１８は溝とされ、すなわち、軸線Ａに平行で歯２０と交互に配置された連続的な溝１９を有する。リブ１７は台形の部分と、前部作用面２１と２つの連結面２２とを有しており、溝１９および歯２０は部分１８に沿って０．８〜１．２ｍｍの間隔ＳＤでＤ１方向に等しく隔てられて軸線Ａに対して対称的に配置されており、溝１９は部分１８の中心線に向かって深さが増大し、歯２０は群２０ａ，２０ｂに分けられている。１つの群２０ａは部分１８の中心線に位置し、それぞれの歯２０は前部作用面２１に対して僅かに後退した丸い頂端部２３を有し、２つの群２０ｂは群２０ａの反対両側に位置し、それぞれの歯は前部作用面２１と同平面の平坦端部２４を有しており、各歯２０は互いに直角をなす２つの側面２５を有しており、部分１８は外側の部分１２の溝１９を有して長さはＬ１であり、この長さは長手方向のシールＬＳの幅Ｌよりも間隔ＳＤの２倍ほど大きい。
【００２７】
実際の使用において、壁部はジョー３，４の間にグリップされ、シール部分１５はハンマー５と隆起リブ１７との間で圧縮され、長手方向のシールＬＳは中央の部分１８に接して位置される。長手方向のシールが軸線Ａと完全に整合されたとき、部分１８は２つの溝１９を長手方向のシールＬＳの反対両側に位置させて長手方向のシールＬＳのない部分にて壁部と協働させる。すなわち、部分１８の端の歯２０は長手方向のシールＬＳのない部分にて超音波横断シールを行うために必要な圧力を保証し、溝１９は長手方向のシールＬＳの包装材料を変形させて歯２０の側面２５からの圧力を受け止めるようにさせる。
【００２８】
長手方向のシールＬＳが部分１８と完全に整合されていないときですら、横断シールは効果的に行われる。すなわち装置１は、少なくともＤ１方向の不整合がどのみち溝１９の間隔ＳＤ内であるときには、溝１９の深さが部分１８の端部に向かって減少し、長手方向のシールＬＳの部分と、長手方向のシールＬＳのない部分との両方において、壁部に十分な圧力が伝わるようにすることで、効果的な横断シールが行われることを保証する。
【００２９】
換言すれば溝のある部分１８は、部分１５を超音波でシールし且つ包装材料の厚さのあらゆる変化を補償するために十分な圧力を厚さの不均一なシール部分１５に伝える。
【００３０】
明らかなように、部分１８の長さＬ１が大きくなるほど、不整合の許容度が大きくなり、すなわち不整合が横断シールの効果を損なわなくなる。
【００３１】
しかしながら、特許請求の範囲に記載された範囲から逸脱せずに、本発明によるシール装置に対して変化を成し得ることは明白である。
【００３２】
特に、このシール装置は、パッケージ材料の連続チューブとは対照的に素材から予備形成されて個別に充填されたパッケージをシールするために使用できる。
【図面の簡単な説明】
【図１】本発明によるシール装置の斜視図を示す。
【図２】１つの作動段階における図１のシール装置の大きな縮尺の、明瞭化のために部品が取り外された概略断面図を示す。
【図３】図１の詳細な拡大前面図を示す。
【図４】線ＩＶ−ＩＶに沿う図３の細部の断面図を示す。
【図５】チューブの一部の拡大側面図を示す。
【符号の説明】
１ 装置
２ チューブ
３，４ ジョー
５ ハンマー
７ アンビル
８ 切断装置
９ 壁部
１０ 中央部分
１１ スロット
１２ 外側部分
１３ 間隙
１４ ナイフ
１５ シール部分
１６ 部分
１７ 隆起リブ
１８ 部分
１９ 溝
２０ 歯
２１ 前部作用面
２２ 連結面
２３ 頂端部
２４ 平坦端部
２５ 側面

Claims (4)

  1. 熱密着性プラスチック材料製の少なくとも１つのカバー層および長手方向のシール（ＬＳ）を含む包装材料（２）によって形成された２つの壁部を前記長手方向のシール（ＬＳ）の一部分を含む横断シール部分（１５）に沿って局部的に圧縮する２つのジョー（３，４）と、横断シール部分（１５）に超音波振動を与えて、前記横断シール部分（１５）に沿って熱密着性プラスチック材料を溶融して前記壁部をシールする超音波発生器とを含み、ジョー（３，４）の一方は横断シール部分（１５）に沿って位置する長手方向のシール（ＬＳ）の部分を圧縮する中間部分（１８）を含む、流動食品の充填された包装材料（２）をシールする超音波横断シール装置であって、前記中間部分（１８）が溝（１９）を連続形成した部分を含み、前記溝（１９）の深さが前記中間部分（１８）の中心線に向かって増大することを特徴とする装置。
  2. 前記中間部分（１８）はジョー（３，４）の一方に設けられて包装材料（２）の移送路（Ｐ）を横断する方向（Ｄ１）に延在し、他方のジョーに対面して該他方のジョーとの間で前記壁部を圧縮する作用前面（２１）を有する隆起リブ（１７）に沿って配置され、前記溝（１９）は前記移送路（Ｐ）に平行で歯（２０）と交互に配置されており、前記歯（２０）の第１の群（２０ａ）は前記中間部分（１８）の中心線のところに位置し、前記第１の群（２０ａ）の各々の歯（２０）の頂端部（２３）は隆起リブ（１７）の前記作用前面（２１）の平面に対して後退した位置にあることを特徴とする請求項１に記載された装置。
  3. 前記各々の歯（２０）の前記頂端部（２３）が丸みを有することを特徴とする請求項２に記載された装置。
  4. 前記中間部分（１８）は、該中間部分の前記中心線に対して第１の群（２０ａ）の反対両側に位置する歯（２０）の第２の群（２０ｂ）を２つ含み、２つの第２の群（２０ｂ）の各々の歯（２０）の頂端部（２４）は隆起リブ（１７）の作用前面（２１）の平面と同平面に位置することを特徴とする請求項２に記載された装置。
JP2002066743A 2001-03-12 2002-03-12 流動食品を充填された包装材料の壁部をシールする超音波横断シール装置 Expired - Lifetime JP3984078B2 (ja)

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EP01830161A EP1241098B1 (en) 2001-03-12 2001-03-12 Ultrasonic transverse sealing device and method for sealing walls of a packaging material filled with a pourable food product

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