JP4093775B2 - 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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JP4093775B2
JP4093775B2 JP2002066648A JP2002066648A JP4093775B2 JP 4093775 B2 JP4093775 B2 JP 4093775B2 JP 2002066648 A JP2002066648 A JP 2002066648A JP 2002066648 A JP2002066648 A JP 2002066648A JP 4093775 B2 JP4093775 B2 JP 4093775B2
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tube
pressure
wall
jaws
sealing
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JP2002326610A (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
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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
    • 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
    • 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
    • B29C66/737—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 state of the material of the parts to be joined
    • B29C66/7373—Joining soiled or oxidised materials
    • 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
    • B29C66/81415—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
    • B29C66/81425—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
    • B29C66/84—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
    • B29C66/80—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
    • B29C66/8491—Packaging machines welding through a filled container, e.g. tube or bag
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/924—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/9241—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force or the mechanical power
    • B29C66/92451—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force or the mechanical power using joining tools having different pressure zones or using several joining tools with different pressures
    • 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
    • B65B51/225—Applying or generating heat or pressure or combinations thereof by friction or ultrasonic or high-frequency electrical means 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
    • B29C66/70—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
    • B29C66/81421—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
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool reciprocating along one axis
    • 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)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Closing Of Containers (AREA)
  • Cartons (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】
上述したシール装置は、例えばジュース、ワイン、トマト・ソース、低温殺菌または長期保存ＵＨＴ（超高温処理）ミルクなどの流動食品を包装する機械に備えられており、パッケージが長手方向にシールされたウェブで形成される包装材料による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され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、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つのジョーをそれぞれ含む前記横断シール装置を含み、枕形状のパックはその間のシール部分を切断することで互いに分離される。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させて熱密着プラスチック材料を溶融し、壁部をシールするための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高にてチューブの壁部を部分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を切り離す。
【０００６】
枕形状パックはその後最終折り畳み捨てへ給送され、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た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】
そのような大きな圧力は、一方では熱密着性プラスチック材料の超音波による溶融を助成するが、他方において、横断シールの場合には熱密着プラスチック材料の部分を押し出してしまい、これが、溶融され且つジョーで与えられる圧力を受けたときに横断シール部分から食品を収容しているチューブへ向かって移動し、食品と接触して硬化して、シール部分に付着した塊を形成することで有害である。
【０００９】
包装材料チューブがシール部分に向かって細くなるので、この塊は壁部の間に挟まれて包装材料またはそのいずれかの層を破断しかねない。
【００１０】
【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、特に包装材料を傷つけることのない超音波横断シール装置を提供することである。
【００１１】
【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。
【００１２】
溶融した熱可塑性材料と食品とが直接に接触するのをバリヤが防止し、これにより塊の形成されることを防止する。
【００１６】
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。
【００１７】
【発明の実施の形態】
図１は低温殺菌した、またはＵＨＴ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超音波横断シール装置１を全体として示す。
【００１８】
図２を参照すれば、装置１は、熱密着性プラスチック材料で構成されたウェブを長手方向に折り畳み、シールして形成されると共に、装置１の上流で流動食品が充填される包装材料のチューブ２から、流動食品を密封したパッケージＣを形成する準備をする。
【００１９】
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。
【００２０】
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に向かうアンビル７と、切断装置８とを含む。
【００２１】
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る一方、ジョー３，４は知られているように前記ユニット（図示せず）によって、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）に沿って移動される。部分Ｔに沿ってジョー３，４は図２の状態にセットされ、これにおいてジョー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９を形成するようにジョー３，４で変形される。
【００２２】
ハンマー５はＤ１方向に延在し、またチューブ２の壁部９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を変形させて壁部９を一体にする外側の部分１２とを含む。
【００２３】
アンビル７はＤ１方向に延在し、スロット１１と接合された間隙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ならば壁部９を切断するナイフ１４を含む。ジョー３，４は、２つのシール部分１５で壁部９をシールし、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で壁部９を分かれた状態のまま残す。
【００２４】
図２で、ジョー３，４は組み合って壁部９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、これが発生器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う作用で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９を密封シールする。
【００２５】
ハンマー５の中央部分はスロット１１で途切れ且つアンビル７に向いた平坦面１７を有し、アンビルはスロット１１の各側に平行な２つの隆起リブ１８を有する。図３を参照すれば、各リブ１８は２つの段１９，２０で形成され、これによりアンビル７は間隙１３で２つの特に対称的な部分に分けられた段階面２１を有する。各部分は面１７に平行でリブ１８が突出する表面２２と、段１９を形成し且つ表面２２に平行な表面２３と、段２０を形成し且つ表面２２に平行な表面２４含む。面２１は、表面２３，２２を連結する傾斜表面２５と、表面２２に直角で且つ表面２３および表面２４を連結する表面２６と、表面２４および間隙１３を連結する傾斜面２７とを含む。
【００２６】
実際の使用において、これまで説明した部分１５，１６に加えて、面２１の輪郭が壁部９に沿って、２つの部分２８（一方のみ図３に示される。）を形成し、それに沿って壁部９は圧力Ｐ１よりも小さい圧力Ｐ２の作用を受ける。すなわち、包装材料の変形性および面２１の輪郭が、ジョー３，４に唯一の圧縮力を付与することで壁部９のそれぞれの隣接部分１５，２８で圧力Ｐ１および圧力Ｐ２を得られるようにする。圧力Ｐ１および圧力Ｐ２の差圧は、面２１の幾何形状を適当に定めることで選ぶことができる。さらに詳しくは、段２０は表面２２に対して高さＨ１を有する一方、段１９は表面２２に対するＨ１よりも小さい高さＨ２を有し、これにより圧力Ｐ１および圧力Ｐ２の差圧は段２０および段１９の高さＨ１およびＨ２の差に関係する。
【００２７】
段１９，２０はＤ１の方向に同じ長さで、移送路Ｐに平行な方向に同じ程度の大きさのそれぞれの幅を有する。
【００２８】
圧力Ｐ２は部分２８で熱密着性プラスチック材料が溶融することを防止するように選ばれるが、それと同時に、溶融した材料を部分１５の位置に保持する。すなわち、部分２８は溶融プラスチック材料と食品との接触を防止するバリヤを形成する。
【００２９】
実際の使用において、ジョー３，４は本明細書で一部説明したように知られた方法で一体にされて互いに押圧される。ジョー３，４の圧縮は、段２０にて圧力Ｐ１の作用を受ける２つの部分１５と、２つの部分１５の間を延在し、壁部９が単純に一緒にされた部分１６と、それぞれの部分１５に隣接し、壁部９が互いに接触し、段１９にて圧力Ｐ２の作用を受ける２つの部分２８とを壁部９に沿って形成する。ジョー３，４が圧縮されると、圧力Ｐ１と超音波振動との組み合わされた作用がシール部分１５に局部的な熱密着性プラスチック材料の溶融を生じ、これが圧力Ｐ１の作用を受けて部分１６に向かって部分的に押し遣られ、シール部分１５に隣接する部分２８によって保持される。各部分２８の直ぐ近くでは、熱密着プラスチック材料は壁部９の間に存在できる。しかしながら部分２８に沿って等しく分散される圧力Ｐ２により、熱密着性プラスチック材料は壁部９でガイドされて積層形状になり、また食品に接触されるか包装材料を損なう形状となることなく硬化する。
【００３０】
換言すれば、部分１５，１６，２８はＤ１方向に延在するストリップとなる。
【００３１】
本発明の詳細な説明は面１７，２１の特別な輪郭を与えるが、しかしながら本発明の範囲から逸脱せずに多くの変化が明確に成し得る。例えば、添付図面に示されない第１の変形例において、アンビルの面は平坦とされ、それぞれ２つの段で形成される２つの隆起リブがハンマーに沿って延在される。図示されないさらに他の変形例では、ハンマーおよびアンビルの両方がそれぞれ隆起リブを含み、リブは相互に作用して２つの与えられた個別のチューブ壁部の隣接する部分に別々の圧力を与える。
【００３２】
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。
【００３３】
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反対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される。
【図面の簡単な説明】
【図１】本発明による横断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の横断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２の作動段階での横断シール装置の大きな縮尺の断面を示す。
【符号の説明】
１ 超音波横断シール装置
２ チューブ
３，４ ジョー
５ ハンマー
６ 超音波発生器
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
１７ 平坦面
１８ 隆起リブ
１９，２０ 段
２１ 段階状の面
２２，２３，２４，２６ 表面
２５ 傾斜表面
２８ 部分

Claims (2)

  1. 流動食品を充填されて移送路（Ｐ）に沿って移送される包装材料（２）のチューブの壁部（９）を該チューブの横断方向へシールする超音波横断シール装置であって、
    平坦な第１の面（１７）を有する第１のジョー（３）と、第１のジョー（３）に設けられた超音波発生器（６）と、第２の面（２１）を有する第２のジョー（４）とを備え、第１および第２のジョー（３，４）がグリップするときに第１および第２の面（１７，２１）が、チューブの壁部（９）の、チューブの移送方向に互いに隔てられた１対の部分（１５）を圧縮してシールするように構成されるとともに、第２のジョー（４）に、前記移送路（Ｐ）に対して横方向へ延びて前記１対の部分（１５）の間の位置に通じる間隙（１３）が形成され、その間隙（１３）内に、チューブの壁部（９）の、前記１対の部分（１５）の間のシールされていない部分（１６）を切断するナイフ（１４）が収容されており、また、
    前記第２の面（２１）の、チューブの移送方向へみて前記間隙（１３）の下流側に位置する部分は、それぞれが前記第１の面（１７）に平行で下流側から上流側へ互いに隣接して段階状に配列された第１、第２および第３の表面（２２，２３，２４）と、第１および第２の表面（２２，２３）を連結し且つ第１の表面（２２）に対して傾斜した第４の表面（２５）と、第２および第３の表面（２３，２４）を連結し且つ第２の表面（２３）に直角な第５の表面（２６）と、第３の表面（２４）から上流側へ傾斜して延びて前記間隙（１３）を形成する面の一部になっている第６の表面（２７）とを有し、
    前記第３の表面（２４）が前記第１の表面（２２）に対して所定の第１の高さ（Ｈ１）を有し、前記第２の表面（２３）が前記第１の表面（２２）に対して前記第１の高さ（Ｈ１）よりも小さい第２の高さ（Ｈ２）を有していて、第１および第２のジョー（３，４）がグリップするときに前記第３の表面（２４）が、前記第１の面（１７）との間でチューブの前記壁部（９）の、前記１対の部分（１５）の一方である第１の部分（１５）を所定の第１の圧力（Ｐ１）で圧縮するとともに、チューブの前記壁部（９）の第２の部分（２８）を第１の圧力（Ｐ１）より小さい第２の圧力（Ｐ２）で圧縮し、第１の圧力（Ｐ１）が、前記第１の部分（１５）の熱密着性プラスチック材料を溶融して該第１の部分（１５）でチューブの前記壁部（９）をシールする圧力であり、また、第２の圧力（Ｐ２）が、前記第２の部分（２８）の熱密着性プラスチック材料を溶融させずに、前記第１の部分（１５）で溶融した熱密着性プラスチック材料を該第１の部分（１５）の位置に保持する圧力であって、第２の圧力（Ｐ２）で圧縮された前記第２の部分（２８）が前記第１の部分（１５）と流動食品との間のバリヤを形成するように構成されていることを特徴とする超音波横断シール装置。
  2. 前記第１および第２の高さ（Ｈ１、Ｈ２）が、シールの間に積層形状の溶融プラスチック材料を形成するようなものに選定されていることを特徴とする請求項１に記載された装置。
JP2002066648A 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 JP4093775B2 (ja)

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EP01830163A EP1241100B1 (en) 2001-03-12 2001-03-12 Ultrasonic transverse sealing method and device for sealing walls of a packaging material filled with a pourable food product
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