FR2953200A1 - Overpackage i.e. pouch package, manufacturing device, has cylinder arranged opposite to sonotrode and film strips, where rotation of cylinder is controlled by control units between two angular velocities during each revolution of cylinder - Google Patents

Overpackage i.e. pouch package, manufacturing device, has cylinder arranged opposite to sonotrode and film strips, where rotation of cylinder is controlled by control units between two angular velocities during each revolution of cylinder Download PDF

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Publication number
FR2953200A1
FR2953200A1 FR0958442A FR0958442A FR2953200A1 FR 2953200 A1 FR2953200 A1 FR 2953200A1 FR 0958442 A FR0958442 A FR 0958442A FR 0958442 A FR0958442 A FR 0958442A FR 2953200 A1 FR2953200 A1 FR 2953200A1
Authority
FR
France
Prior art keywords
cylinder
sonotrode
film
anvil
strip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR0958442A
Other languages
French (fr)
Other versions
FR2953200B1 (en
Inventor
Dominique Boillot
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MV 2
Original Assignee
MV 2
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MV 2 filed Critical MV 2
Priority to FR0958442A priority Critical patent/FR2953200B1/en
Publication of FR2953200A1 publication Critical patent/FR2953200A1/en
Application granted granted Critical
Publication of FR2953200B1 publication Critical patent/FR2953200B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • B29C66/83511—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws jaws mounted on rollers, cylinders or drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B29C65/083—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil
    • B29C65/086—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil using a rotary anvil
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B29C65/083—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil
    • B29C65/087—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil using both a rotary sonotrode and a rotary anvil
    • 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
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/23—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations
    • B29C66/232—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations said joint lines being multiple and parallel, i.e. the joint being formed by several parallel joint lines
    • 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
    • B29C66/345—Progressively making the joint, e.g. starting from the middle
    • B29C66/3452—Making complete joints by combining partial 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
    • B29C66/432—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
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/49—Internally supporting the, e.g. tubular, article during joining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • 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
    • B29C66/81463—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 plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single joint
    • B29C66/81469—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 plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single joint one placed next to the other in a single line transverse to the feed direction, e.g. shoulder to shoulder sonotrodes
    • 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
    • B29C66/816—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 mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8167—Quick change joining tools or surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8351—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws
    • B29C66/83511—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws jaws mounted on rollers, cylinders or drums
    • B29C66/83513—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws jaws mounted on rollers, cylinders or drums cooperating jaws mounted on rollers, cylinders or drums and moving in a closed path
    • 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
    • B29C66/83511—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws jaws mounted on rollers, cylinders or drums
    • B29C66/83517—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws jaws mounted on rollers, cylinders or drums said rollers, cylinders or drums being hollow
    • 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
    • B29C66/841—Machines or tools adaptable for making articles of different dimensions or shapes or for making joints of different dimensions
    • B29C66/8412—Machines or tools adaptable for making articles of different dimensions or shapes or for making joints of different dimensions of different length, width or height
    • 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
    • B29C66/851—Bag or container making machines
    • B29C66/8511—Bag making 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
    • B29C66/93—Measuring or controlling the joining process by measuring or controlling the speed
    • B29C66/932—Measuring or controlling the joining process by measuring or controlling the speed by measuring the speed
    • 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
    • B29C66/93—Measuring or controlling the joining process by measuring or controlling the speed
    • B29C66/934—Measuring or controlling the joining process by measuring or controlling the speed by controlling or regulating the speed
    • B29C66/93441—Measuring or controlling the joining process by measuring or controlling the speed by controlling or regulating the speed the speed being non-constant over time
    • 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
    • B29C66/93—Measuring or controlling the joining process by measuring or controlling the speed
    • B29C66/934—Measuring or controlling the joining process by measuring or controlling the speed by controlling or regulating the speed
    • B29C66/93451—Measuring or controlling the joining process by measuring or controlling the speed by controlling or regulating the speed by controlling or regulating the rotational speed, i.e. the speed of revolution
    • 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
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/02—Enclosing successive articles, or quantities of material between opposed webs
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/96—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process
    • B29C66/961—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process involving a feedback loop mechanism, e.g. comparison with a desired value
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • 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
    • B29K2101/00—Use of unspecified macromolecular compounds as moulding material
    • B29K2101/12—Thermoplastic materials
    • 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
    • B29L2031/7128—Bags, sacks, sachets

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Package Closures (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

The device has a rotative cylinder (4) comprising a demountable anvil (41) on a front side, where the anvil is projected and extended parallel to an axis of the cylinder. The cylinder is arranged opposite to a sonotrode (6) and lower and upper film strips (3', 3'') scrolling between the cylinder and the sonotrode for welding of the film strips by ultrasound along with a transversal welding strip. Rotation of the cylinder is controlled by control units (44) between two angular velocities during each revolution of the cylinder. An independent claim is also included for a method for manufacturing an overpackage from a filmstrip driven by a driving unit along a scrolling direction.

Description

DISPOSITIF DE FABRICATION D'EMPAQUETAGES DE CONDITIONNEMENT PAR ULTRASON DEVICE FOR MANUFACTURING ULTRASOUND PACKAGING PACKAGING

DOMAINE DE L'INVENTION La présente invention concerne le domaine technique général de la fabrication d'un empaquetage de conditionnement à partir d'au moins une bande de film en utilisant des ultrasons. De préférence, la « fabrication » de l'empaquetage comprend le soudage en continu 10 de la bande de film pour réaliser l'empaquetage, et son remplissage pendant le défilement du film. FIELD OF THE INVENTION The present invention relates to the general technical field of manufacturing packaging packaging from at least one filmstrip using ultrasound. Preferably, the "manufacture" of the packaging comprises the continuous welding of the film web to carry out the packaging, and its filling during the running of the film.

PRESENTATION DE L'ART ANTERIEUR PRESENTATION OF THE PRIOR ART

15 Le soudage par ultrason de matériau en bandes consiste à faire passer la ou les bandes à assembler et à les souder entre une sonotrode, animée d'un mouvement vibratoire ultrasonore, et une enclume. Dans de nombreuses applications, les positions de la sonotrode et de l'enclume sont fixes par rapport au sens de défilement des bandes, seules les bandes étant animées d'un 20 mouvement longitudinal intermittent entre chaque opération de soudage. On parle dans ce cas de procédé pas à pas. D'autres applications sont connues dans lesquelles l'enclume est de forme globale cylindrique et est entraînée en rotation. On a illustré aux figures la à le un exemple d'un tel dispositif de fabrication d'un 25 empaquetage de conditionnement selon l'art antérieur. Le dispositif comprend deux cylindres 1 et l'et deux sonotrodes 2 et 2' disposées respectivement en regard des cylindres 1 et l'. Ce dispositif permet la fabrication de sachets à partir de deux bandes superposées de matériau 3', 3" ù contenant par exemple un matériau thermoplastique ù qui sont déroulées de façon continue entre les cylindre 1 et 1' 30 et les sonotrodes 2 et 2'. Le cylindre 1 comprend sur sa face latérale au moins deux enclumes 10 délimitant deux des quatre côtés de l'empaquetage à fabriquer. Le cylindre 1 est entraîné en rotation à la même vitesse circonférentielle que la vitesse de défilement des bandes 3', 3". Lorsque l'enclume 10 vient en vis-à-vis de la sonotrode 2 par l'intermédiaire des bandes de film 3', 3", celles-ci sont soudées par ultrason selon le motif de l'enclume 10. Le cylindre 1' comprend sur sa face latérale au moins une enclume 10' délimitant les deux autres côtés de l'empaquetage à fabriquer. Le cylindre 1' est entraîné en rotation à la même vitesse circonférentielle que la vitesse de défilement des bandes 3', 3". Lorsque l'enclume 10' vient en vis-à-vis de la sonotrode 2' par l'intermédiaire des bandes de film 3', 3", celles-ci sont soudées par ultrason selon le motif de l'enclume 10'. Dans un mode de réalisation particulier, le cylindre 1' comporte une pluralité d'enclumes 10' réparties sur sa circonférence. Ultrasonic welding of strip material consists of passing the band (s) to be joined and welding them between a sonotrode, animated by an ultrasonic vibratory movement, and an anvil. In many applications, the positions of the sonotrode and the anvil are fixed with respect to the running direction of the bands, only the bands being animated with an intermittent longitudinal movement between each welding operation. In this case we speak of a step-by-step process. Other applications are known in which the anvil is of cylindrical overall shape and is rotated. FIG. 1a illustrates an example of such a device for manufacturing a packaging package according to the prior art. The device comprises two cylinders 1 and 1 and two sonotrodes 2 and 2 'disposed respectively facing cylinders 1 and 1'. This device allows the manufacture of bags from two superimposed strips of material 3 ', 3 "- containing for example a thermoplastic material - which are unrolled continuously between the cylinder 1 and 1' 30 and the sonotrodes 2 and 2 '. The cylinder 1 comprises on its lateral face at least two anvils 10 delimiting two of the four sides of the packaging to be manufactured The cylinder 1 is rotated at the same circumferential speed as the speed of travel of the strips 3 ', 3 ". When the anvil 10 is vis-à-vis the sonotrode 2 through the film strips 3 ', 3 ", they are ultrasonically welded according to the pattern of the anvil 10. The cylinder 1' comprises on its lateral face at least one anvil 10 'delimiting the other two sides of the packaging to be manufactured, the cylinder 1' is rotated at the same circumferential speed as the speed of the strips 3 ', 3 ". When the anvil 10 'is vis-à-vis the sonotrode 2' through the film strips 3 ', 3 ", they are ultrasonically welded according to the pattern of the anvil 10'. a particular embodiment, the cylinder 1 'has a plurality of anvils 10' distributed over its circumference.

Le principal inconvénient du dispositif illustré à la figure 1 est que l'on doit changer le cylindre à chaque fois que la longueur de produit à souder varie, ce qui entraîne des coûts d'outillage importants et des temps d'immobilisation de la machine également. Un but de la présente invention est de proposer un procédé et un dispositif de fabrication d'un empaquetage de conditionnement permettant de palier cet inconvénient. The main drawback of the device illustrated in FIG. 1 is that the cylinder must be changed each time the length of product to be welded varies, which entails significant tooling costs and downtimes of the machine as well. . An object of the present invention is to provide a method and a device for manufacturing a packaging packaging for overcoming this disadvantage.

RESUME DE L'INVENTION SUMMARY OF THE INVENTION

A cet effet, l'invention propose un dispositif de fabrication d'un empaquetage de conditionnement à partir d'au moins une bande de film entraînée par des moyens d'entraînement selon une direction de défilement, remarquable en ce que le dispositif comprend au moins deux cylindres rotatifs d'axes de révolution perpendiculaires à la direction de défilement de la bande de film : - le premier cylindre comportant sur sa face latérale au moins une enclume faisant saillie et s'étendant sur la circonférence du premier cylindre, le premier cylindre étant disposé en regard d'au moins une première sonotrode et la bande de film défilant entre le premier cylindre et la première sonotrode pour le soudage de la bande de film par ultrason le long d'au moins une bande de soudage longitudinal, - le deuxième cylindre comportant sur sa face latérale au moins une enclume faisant saillie et s'étendant parallèlement à l'axe du deuxième cylindre, le deuxième cylindre étant disposé en regard d'au moins une deuxième sonotrode et la bande de film défilant entre le deuxième cylindre et la deuxième sonotrode pour le soudage de la bande de film par ultrason le long d'au moins une bande de soudage transversale, la rotation du deuxième 30 cylindre étant commandée par des moyens de commande aptes à faire varier la vitesse angulaire du deuxième cylindre entre des première et deuxième vitesses angulaires lors de chaque révolution du deuxième cylindre. Des aspects préférés mais non limitatif du dispositif selon l'invention sont les suivants : - la vitesse tangentielle de l'enclume associée à la deuxième vitesse angulaire du cylindre est égale à la vitesse de défilement du film ; - le deuxième cylindre comprend au moins deux enclumes, les deux enclumes s'étendant sur des rayons différents du cylindre ; - le deuxième cylindre comprend au moins deux enclumes s'étendant sur une portion de la longueur du deuxième cylindre, les deux enclumes étant alignées sur une même génératrice du deuxième cylindre ; - les enclumes sont démontables ; - les enclumes du deuxième cylindre sont de forme différentes ; - chaque enclume a une forme non symétrique par rapport à un plan P passant par l'axe de rotation du deuxième cylindre ; - le dispositif comprend plusieurs sonotrodes en regard du deuxième cylindre ; - chaque sonotrode est entraînée en rotation autour d'un axe de rotation par des moyens moteur, lesdits moyens moteur permettant une rotation synchrone de la deuxième sonotrode avec le deuxième cylindre. For this purpose, the invention proposes a device for manufacturing a packaging packaging from at least one strip of film driven by drive means in a running direction, which is remarkable in that the device comprises at least two rotary cylinders of axes of revolution perpendicular to the running direction of the film strip: the first cylinder having on its lateral face at least one anvil protruding and extending on the circumference of the first cylinder, the first cylinder being arranged facing at least a first sonotrode and the strip of film moving between the first cylinder and the first sonotrode for welding the ultrasound film strip along at least one longitudinal welding strip, - the second cylinder having on its lateral face at least one protruding anvil extending parallel to the axis of the second cylinder, the second cylinder being arranged in a in view of at least a second sonotrode and the strip of film moving between the second cylinder and the second sonotrode for welding the ultrasound film strip along at least one transverse welding strip, the rotation of the second cylinder being controlled by control means adapted to vary the angular velocity of the second cylinder between first and second angular velocities during each revolution of the second cylinder. Preferred but nonlimiting aspects of the device according to the invention are the following: the tangential velocity of the anvil associated with the second angular velocity of the cylinder is equal to the speed of travel of the film; the second cylinder comprises at least two anvils, the two anvils extending on different radii of the cylinder; the second cylinder comprises at least two anvils extending over a portion of the length of the second cylinder, the two anvils being aligned on the same generatrix of the second cylinder; - the anvils are removable; the anvils of the second cylinder are of different shape; each anvil has a non-symmetrical shape with respect to a plane P passing through the axis of rotation of the second cylinder; the device comprises several sonotrodes facing the second cylinder; - Each sonotrode is rotated about an axis of rotation by motor means, said motor means for synchronous rotation of the second sonotrode with the second cylinder.

L'invention concerne également un procédé de fabrication d'un empaquetage de conditionnement à partir d'au moins une bande de film entraînée par des moyens d'entraînement selon une direction de défilement, remarquable en ce que le procédé comprend la mise en rotation d'au moins deux cylindres rotatifs d'axes de révolution perpendiculaires à la direction de défilement du film : - le premier cylindre comportant sur sa face latérale au moins une enclume faisant saillie et s'étendant sur la circonférence du premier cylindre, le premier cylindre étant disposé en regard d'au moins une première sonotrode et la bande de film défilant entre le premier cylindre et la première sonotrode pour le soudage de la bande de film par ultrason le long d'au moins une bande de soudage longitudinal, - le deuxième cylindre comportant sur sa face latérale au moins une enclume faisant saillie et s'étendant parallèlement à l'axe du deuxième cylindre, le deuxième cylindre étant disposé en regard d'au moins une deuxième sonotrode et la bande de film défilant entre le deuxième cylindre et la deuxième sonotrode pour le soudage de la bande de film par ultrason le long d'au moins une bande de soudage transversale, la rotation du deuxième cylindre étant commandée par des moyens de commande aptes à faire varier la vitesse angulaire du deuxième cylindre entre des première et deuxième vitesses angulaires lors de chaque révolution du deuxième cylindre. BREVE DESCRIPTION DES DESSINS The invention also relates to a method of manufacturing a packaging packaging from at least one film web driven by drive means in a running direction, characterized in that the method comprises rotating the web at least two rotary cylinders of axes of revolution perpendicular to the running direction of the film: the first cylinder having on its lateral face at least one anvil protruding and extending on the circumference of the first cylinder, the first cylinder being arranged facing at least a first sonotrode and the strip of film moving between the first cylinder and the first sonotrode for welding the ultrasound film strip along at least one longitudinal welding strip, - the second cylinder having on its lateral face at least one protruding anvil extending parallel to the axis of the second cylinder, the second cylinder being arranged facing at least a second sonotrode and the strip of film moving between the second cylinder and the second sonotrode for welding the ultrasound film strip along at least one transverse welding strip, the rotation of the second cylinder being controlled by control means adapted to vary the angular velocity of the second cylinder between first and second angular velocities during each revolution of the second cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

D'autres avantages et caractéristiques du dispositif et du procédé selon l'invention ressortiront mieux de la description qui va suivre de plusieurs variantes d'exécution, 15 données à titre d'exemples non limitatifs, à partir des dessins annexés sur lesquels : - les figures la, lb et 1c illustrent un dispositif de soudage par ultrason de l'art antérieur ; - les figures 2a, 2b et 2c illustrent un mode de réalisation du dispositif selon l'invention ; 20 - les figures 3a et 3b illustrent différents empaquetages de conditionnement obtenu en utilisant le dispositif et le procédé selon l'invention; - les figures 4 à 11 illustrent différents modes de réalisation d'un deuxième cylindre du dispositif selon l'invention. Other advantages and characteristics of the device and of the method according to the invention will emerge more clearly from the following description of several variant embodiments, given by way of non-limiting examples, from the appended drawings in which: Figures 1a, 1b and 1c illustrate an ultrasonic welding device of the prior art; FIGS. 2a, 2b and 2c illustrate an embodiment of the device according to the invention; Figures 3a and 3b illustrate different packaging packages obtained using the device and method according to the invention; - Figures 4 to 11 illustrate different embodiments of a second cylinder of the device according to the invention.

25 Description détaillée de l'invention Detailed description of the invention

On va maintenant décrire plus en détail le dispositif et le procédé selon l'invention en référence aux figures. Le dispositif selon l'invention permet la fabrication d'un empaquetage de 30 conditionnement à partir d'une (ou plusieurs) bande(s) de film déroulée(s) en continu. Plus précisément, le dispositif selon l'invention permet la fabrication : - d'empaquetages, appelé dans la suite « sachet» et illustré à la figure 3a, obtenus en superposant au moins deux feuilles de films et en les soudant 10 sur les quatre côté - i.e. deux soudures longitudinales 8, 8' et deux soudures transversales 9, 9' ; - d'empaquetages, appelé dans la suite « stick» et illustré à la figure 3b, obtenus en repliant sur elle-même une feuille et en la soudant sur trois côtés - i.e. une soudure longitudinale 8 et deux soudures transversales 9, 9'. On décrira dans la suite le dispositif selon l'invention en référence à la fabrication de sachets, étant entendu que ce dispositif peut être utilisé pour la fabrication de sticks. En référence à la figure 2, on a illustré un mode de réalisation du dispositif selon l'invention. Le dispositif comprend des moyens d'entraînement 7, des premier et deuxième cylindres 3, 4 et des première et deuxième sonotrodes 5, 6. Les moyens d'entraînement 7 permettent de dérouler et d'entraîner de façon ininterrompue les bandes de films 3', 3" superposées pour la fabrication de l'empaquetage de conditionnement. Ces bandes de film 3', 3" sont déroulées et entraînées à la même vitesse de défilement pour assurer un bon maintien de la superposition des bandes de film. Les moyens d'entraînement 7 peuvent être de différents types connus de l'homme du métier. Les moyens d'entraînement 7 sont par exemple des rouleaux ou disques presseurs motorisés, des bandes aspirantes motorisées, des courroies ou bandes presseuses motorisées, etc. The device and method according to the invention will now be described in more detail with reference to the figures. The device according to the invention allows the manufacture of a packaging packaging from one (or more) strip (s) of film unrolled (s) continuously. More specifically, the device according to the invention allows the manufacture of: - packaging, hereinafter called "bag" and illustrated in FIG. 3a, obtained by superimposing at least two sheets of film and welding them on the four sides - ie two longitudinal welds 8, 8 'and two transverse welds 9, 9'; - Packaging, hereinafter called "stick" and illustrated in Figure 3b, obtained by folding on itself a sheet and welding on three sides - i.e. a longitudinal weld 8 and two transverse welds 9, 9 '. The device according to the invention will be described in the following with reference to the manufacture of bags, it being understood that this device can be used for the manufacture of sticks. Referring to Figure 2, there is illustrated an embodiment of the device according to the invention. The device comprises drive means 7, first and second cylinders 3, 4 and first and second sonotrodes 5, 6. The drive means 7 allow uninterrupted unwinding and driving of the film strips 3 ' 3 ", 3" film strips are unrolled and driven at the same speed of movement to ensure a good maintenance of the superposition of the film strips. The drive means 7 can be of different types known to those skilled in the art. The drive means 7 are for example motorized rollers or pressure discs, motorized suction belts, motorized belts or press belts, etc.

Les premier et deuxième cylindres 3, 4 sont disposés de sorte que leurs axes de révolution A-A', B-B' sont parallèles. Chaque cylindre 3, 4 est en regard d'une sonotrode respective 5, 6. Les bandes de films 3', 3" défilent entre le premier cylindre 3 et la première sonotrode 5 et entre le deuxième cylindre 4 et la deuxième sonotrode 6. Le premier cylindre 3 et la première sonotrode 5 permettent la réalisation des soudures longitudinales 8, 8' du sachet par ultrason. A cet effet, le premier cylindre 3 comprend sur sa face latérale 30 deux enclumes 31, 32 espacée l'une de l'autre. Chaque enclume 31, 32 fait saillie et s'étend sur la circonférence du premier cylindre 3. Dans un autre mode de réalisation, le premier cylindre 3 est de forme générale cylindrique sans présenter de saillies, celles-ci étant réalisées sur la face de la sonotrode située en vis-à-vis du cylindre. La soudure par ultrasons des deux bandes de film 3', 3" est réalisée au niveau des enclumes 31, 32 qui sont en contact avec la sonotrode 5 par l'intermédiaire des bandes de film 3', 3". Le lecteur aura compris que lorsque le dispositif est utilisé pour h réalisation de sticks, le premier cylindre 3 comprend une seule enclume 31 pour la réalisation d'une seule soudure longitudinale. Bien entendu, la largeur des enclumes est inférieure à la largeur du cylindre pour permettre de définir une zone non-soudée entre les deux cordons de soudure, la zone non-soudée étant destinée à recevoir le produit à contenir. Le deuxième cylindre et la deuxième sonotrode permettent la réalisation des soudures transversales 9, 9' du sachet par ultrason. A cet effet, le deuxième cylindre comprend sur sa face latérale 40 une enclume 41. L'enclume 41 fait saillie et s'étend selon une direction sensiblement parallèle à l'axe B-B' du deuxième cylindre 4. Avantageusement, l'enclume 41 peut s'étendre sur une portion de la longueur du deuxième cylindre 4 ou sur toute la longueur du deuxième cylindre 4. The first and second cylinders 3, 4 are arranged so that their axes of revolution A-A ', B-B' are parallel. Each cylinder 3, 4 is facing a respective sonotrode 5, 6. The film strips 3 ', 3 "run between the first cylinder 3 and the first sonotrode 5 and between the second cylinder 4 and the second sonotrode 6. The first cylinder 3 and the first sonotrode 5 allow the realization of the longitudinal welds 8, 8 'of the bag by ultrasound.For this purpose, the first cylinder 3 comprises on its side face 30 two anvils 31, 32 spaced apart from each other Each anvil 31, 32 protrudes and extends over the circumference of the first cylinder 3. In another embodiment, the first cylinder 3 is generally cylindrical in shape without projections, these being made on the face of the first cylinder. the ultrasonic welding of the two film strips 3 ', 3 "is carried out at the level of the anvils 31, 32 which are in contact with the sonotrode 5 via the strips of film 3 ', 3 "The reader will have understood that the When the device is used for producing sticks, the first cylinder 3 comprises a single anvil 31 for producing a single longitudinal weld. Of course, the width of the anvils is less than the width of the cylinder to allow to define a non-welded zone between the two welds, the non-welded zone being intended to receive the product to be contained. The second cylinder and the second sonotrode allow the realization of transverse welds 9, 9 'of the bag by ultrasound. For this purpose, the second cylinder comprises on its lateral face 40 an anvil 41. The anvil 41 protrudes and extends in a direction substantially parallel to the axis BB 'of the second cylinder 4. Advantageously, the anvil 41 can extend over a portion of the length of the second cylinder 4 or over the entire length of the second cylinder 4.

Le choix d'une technique de scellage à base d'ultrasons permet d'atteindre le double objectif de réaliser une soudure à très haute vitesse tout en conservant une qualité de scellage optimale. En effet, l'action des ultrasons permet de chasser intégralement le produit des zones devant être scellées. Ainsi, les zones concernées des films sont totalement exemptes de la moindre trace de produit après soudure. Enfin, comparée à d'autres techniques de soudure, la soudure par ultrasons permet d'injecter de l'énergie avec un taux de transfert élevé. Cette technique offre donc un rendement élevé, permettant un scellage localisé et rapide, sans dégradation des films. Le principe de fonctionnement du dispositif selon l'invention est le suivant. La première bande de film 3', dite bande de film inférieure, est déroulée de manière continue, ininterrompue, à haute vitesse. La deuxième bande de film 3", ou bande de film supérieure, est déroulée en vis-à-vis de la première bande de film 3', à la même vitesse. La deuxième bande de film 3" est ensuite plaquée sur le premier film 3', puis le premier cylindre 3 et la première sonotrode 5 de soudure par ultrasons sont mis en oeuvre. Le premier cylindre 3 et la première sonotrode 5 réalisent les soudures ultrasons étanches longitudinales des deux films 3', 3", c'est-à-dire des soudures dans une direction sensiblement parallèle à la direction de défilement des bandes de films. Ces soudures longitudinales permettent de délimiter un canal entre les deux bandes de film 3', 3". On réalise ensuite l'injection du produit devant être conditionné simultanément dans le canal, par exemple au moyen d'une canule d'alimentation, ou filière. Cette canule est alimentée via une canalisation par un réservoir, soit par gravité, soit au moyen d'une pompe, ou par tout moyen connu de l'homme du métier. En aval du premier cylindre, est disposé le deuxième cylindre 4 et la deuxième sonotrode 6 de soudure par ultrasons. Le deuxième cylindre et la deuxième sonotrode réalisent les soudures transversales, c'est-à-dire des soudures dans une direction sensiblement perpendiculaire à la direction de défilement des bandes de films. A l'issue de cette dernière étape, les empaquetages de conditionnement individuels de produits sont délimités et fermés hermétiquement, mais ils sont encore liés les uns aux autres. L'intervalle entre deux soudures transversales détermine, avec la largeur des canaux, les dimensions finales de chaque conditionnement. La rotation du premier cylindre est assurée par un moteur 33 - par exemple un moteur électrique - permettant la mise en rotation du premier cylindre à une vitesse angulaire choisie de sorte que la vitesse circonférentielle du premier cylindre est égale à la vitesse de défilement des bandes de film. La rotation du deuxième cylindre est également assurée par un moteur 43 - par exemple un moteur électrique - connecté à des moyens de commande 44. Les moyens de commande 44 permettent de faire varier la vitesse de rotation du moteur 43 et donc la vitesse angulaire du deuxième cylindre 4. Ceci permet de réaliser des soudures transversales plus ou moins rapprochées sur les bandes de film 3', 3". Plus précisément, les moyens de commande sont aptes à faire varier la vitesse angulaire du deuxième cylindre 4 lors d'une révolution afin de faire varier la longueur de bandes de film qui aura défilée entre deux instants pendant lesquels l'enclume et la sonotrode sont face à face. Ainsi et contrairement aux dispositifs de l'art antérieur décrit précédemment, l'invention permet de fabriquer des empaquetages de conditionnement de longueur variable - en faisant varier la vitesse de rotation du deuxième cylindre- sans nécessiter le changement du deuxième cylindre (ce qui est couteux en temps) en fonction de la longueur de l'empaquetage que l'on souhaite réaliser. En référence à la figure 4 on a illustré un mode de réalisation du deuxième cylindre 4 du dispositif selon l'invention. Le deuxième cylindre 4 comprend une unique enclume 41 s'étendant sur toute la longueur de la face latérale du cylindre. Le principe de fonctionnement de ce deuxième cylindre pour réaliser une soudure par ultrason est le suivant. La sonotrode 6 est animée d'un mouvement vibratoire dans une direction « vib » perpendiculaire à la direction de défilement des bandes de film 3', 3". Le moteur 43 entraîne en rotation le deuxième cylindre 4. Lorsque l'enclume 41 arrive à proximité de la sonotrode, les moyens de commande règlent la vitesse de rotation du moteur de sorte que la vitesse tangentielle de l'enclume est égale à la vitesse de défilement des bandes de film. Lorsque l'enclume 41 est face à la sonotrode 6, la portion de bande de film pincée entre l'enclume 41 et la sonotrode est soudée par ultrasons. L'enclume 41 s'éloigne ensuite de la sonotrode 6. Les moyens de commande commandent alors au moteur 43 d'accélérer-si on souhaite diminuer le pas entre deux soudures transversales successives réalisées sur les bandes de film - ou au contraire de ralentir - si on souhaite augmenter le pas entre deux soudures transversales successives. Le principe de synchronisation de la vitesse circonférentielle du deuxième cylindre 10 4 portant la (ou les) enclume(s) 41 avec la vitesse de défilement des bandes de film est par exemple le suivant. En référence à la figure 7, les bandes de film sont entraînées à une vitesse de défilement V donnée par les moyens d'entraînement 7 qui comprennent par exemple une motorisation électrique Ml. 15 Il est possible d'obtenir un signal électrique représentatif de cette vitesse V en utilisant des moyens de mesure de vitesse 8 tels qu'un codeur ou une dynamo tachymétrique. Ce signal est utilisé par un variateur 9 des moyens d'entrainement 7 pour réguler la vitesse V. Ce même signal provenant des moyens de mesure 8 est injecté via le variateur 9 20 comme consigne de vitesse dans un second variateur 10 du moteur 43 entrainant en rotation le deuxième cylindre 4 de façon à synchroniser les vitesses respectives des deux moyens d'entrainement 7 et du moteur 43. La synchronisation des vitesses est au minimum assurée pendant un angle ct, dont le sommet est le centre de rotation O du deuxième cylindre 4, le premier côté s'appuyant 25 sur la génératrice L 1 d'entrée (selon la direction de défilement) de la deuxième sonotrode, le deuxième côté s'appuyant sur la génératrice L2 de sortie (selon la vitesse de défilement) de l'enclume 41 lorsque cette dernière n'est plus en vis-à-vis de la sonotrode. Cet angle délimite la zone dans laquelle au moins un point de la sonotrode est en regard d'un point de l'enclume 41. 30 En dehors de cet angle ct, le deuxième cylindre 4 peut être accéléré ou décéléré indépendamment de la vitesse de défilement V des bandes de films de façon à assurer la variabilité souhaitée du pas entre soudures ou coupes. The choice of an ultrasound-based sealing technique makes it possible to achieve the dual objective of achieving a very high-speed welding while maintaining an optimal sealing quality. Indeed, the action of ultrasound allows to completely expel the product areas to be sealed. Thus, the relevant areas of the films are completely free of the slightest trace of product after welding. Finally, compared to other welding techniques, ultrasonic welding can inject energy with a high transfer rate. This technique therefore offers a high yield, allowing localized and rapid sealing, without degradation of the films. The operating principle of the device according to the invention is as follows. The first film strip 3 ', said lower film strip, is unrolled continuously, uninterrupted, at high speed. The second filmstrip 3 ", or upper filmstrip, is unwound vis-à-vis the first filmstrip 3 ', at the same speed.The second filmstrip 3" is then pressed onto the first film 3 ', then the first cylinder 3 and the first sonotrode 5 ultrasonic welding are implemented. The first cylinder 3 and the first sonotrode 5 perform the longitudinal ultrasonic sealing welds of the two films 3 ', 3 ", that is to say welds in a direction substantially parallel to the direction of travel of the film strips. longitudinal allow to define a channel between the two strips of film 3 ', 3 ". The product to be packaged simultaneously in the channel is then injected, for example by means of a feeding cannula or die. This cannula is fed via a pipeline through a reservoir, either by gravity, or by means of a pump, or by any means known to those skilled in the art. Downstream of the first cylinder, is disposed the second cylinder 4 and the second sonotrode 6 ultrasonic welding. The second cylinder and the second sonotrode perform the transverse welds, that is to say welds in a direction substantially perpendicular to the running direction of the film strips. At the end of this last step, the individual product packaging packages are delimited and sealed, but they are still linked to each other. The interval between two transverse welds determines, with the width of the channels, the final dimensions of each packaging. The rotation of the first cylinder is provided by a motor 33 - for example an electric motor - allowing the first cylinder to be rotated at a chosen angular speed so that the circumferential speed of the first cylinder is equal to the speed of travel of the movie. The rotation of the second cylinder is also ensured by a motor 43 - for example an electric motor - connected to control means 44. The control means 44 make it possible to vary the speed of rotation of the motor 43 and therefore the angular speed of the second 4. This makes it possible to produce transverse welds more or less close together on the film strips 3 ', 3 ", more specifically, the control means are able to vary the angular velocity of the second cylinder 4 during a revolution in order to to vary the length of strips of film that will have passed between two instants during which the anvil and the sonotrode are facing each other, and, unlike the devices of the prior art described above, the invention makes it possible to manufacture packaging variable length conditioning - by varying the rotational speed of the second cylinder - without requiring the change of the second cylinder (which is time-consuming) depending on the length of packaging that is desired. Referring to Figure 4 there is illustrated an embodiment of the second cylinder 4 of the device according to the invention. The second cylinder 4 comprises a single anvil 41 extending over the entire length of the side face of the cylinder. The operating principle of this second cylinder for performing an ultrasonic weld is as follows. The sonotrode 6 is animated by a vibratory movement in a "vib" direction perpendicular to the running direction of the film strips 3 ', 3 ". The motor 43 rotates the second cylinder 4. When the anvil 41 arrives at near the sonotrode, the control means regulate the speed of rotation of the motor so that the tangential velocity of the anvil is equal to the speed of travel of the film strips When the anvil 41 is facing the sonotrode 6, the portion of the film strip clamped between the anvil 41 and the sonotrode is ultrasonically welded, the anvil 41 then moves away from the sonotrode 6. The control means then command the motor 43 to accelerate-if it is desired to reduce the pitch between two successive transverse welds made on the film strips - or on the contrary to slow down - if it is desired to increase the pitch between two successive transverse welds The principle of synchronization of the circumferential speed e of the second cylinder 10 4 carrying the (or) anvil (s) 41 with the speed of travel of the film strips is for example the following. With reference to FIG. 7, the film strips are driven at a running speed V given by the drive means 7 which comprise, for example, an electric motor M1. It is possible to obtain an electrical signal representative of this speed V by using speed measuring means 8 such as an encoder or a tachogenerator. This signal is used by a drive 9 of the drive means 7 to regulate the speed V. This same signal from the measuring means 8 is injected via the drive 9 20 as a speed reference into a second drive 10 of the motor 43 driving in rotating the second cylinder 4 so as to synchronize the respective speeds of the two drive means 7 and the motor 43. The synchronization of the speeds is at least ensured for an angle ct, whose apex is the center of rotation O of the second cylinder 4 , the first side resting on the input generator L 1 (in the running direction) of the second sonotrode, the second side relying on the output generator L 2 (depending on the speed of movement) of the anvil 41 when the latter is no longer vis-à-vis the sonotrode. This angle delimits the zone in which at least one point of the sonotrode is opposite a point of the anvil 41. Outside this angle, the second cylinder 4 can be accelerated or decelerated independently of the scrolling speed. V strips of films so as to ensure the desired variability of the pitch between welds or cuts.

En référence à la figure 5, on a illustré une variante de réalisation du dispositif selon l'invention. Dans cette variante, le deuxième cylindre 4 comprend deux enclumes 41, 42 faisant saillie sur la face latérale du deuxième cylindre. Les deux enclumes s'étendent sur des rayons différents des bases du cylindre. Chaque enclume s'étend sur toute la longueur du deuxième cylindre. Ceci permet, à distance égale entre deux soudures transversales, de diminuer par deux la vitesse de rotation du moteur par rapport à un cylindre ne comprenant qu'une enclume. Par conséquent, il est possible d'utiliser un moteur de puissance inférieure pour entraîner en rotation le deuxième cylindre. Ceci présente un intérêt non négligeable. En effet, on rappelle qu'une des conditions du dispositif est que les cylindres soient rigides. Ceci nécessite l'utilisation de cylindres en matériau métallique présentant un diamètre élevé, de sorte que la masse de chaque cylindre est importante. En disposant plusieurs enclumes sur la face latérale du deuxième cylindre, il est possible de réduire d'autant la puissance nécessaire pour le moteur qui, on le rappelle, a une vitesse de rotation variable dans le cadre de la présente invention. En référence à la figure 6, on a illustré une autre variante du dispositif selon l'invention, variante dans laquelle le deuxième cylindre comprend quatre paires d'enclumes 41 et 41', 42 et 42', 44, 45. Chaque enclume 41, 41' d'une paire d'enclumes s'étend sur une portion de la longueur du cylindre. On entend, dans le cadre de la présente invention, par « longueur» du cylindre, la distance séparant les deux faces de base du cylindre. Les enclumes de chaque paire d'enclumes 41, 41' sont alignées sur la même génératrice. Les paires d'enclumes sont disposées sur des rayons différents des bases du cylindre. Referring to Figure 5, there is illustrated an alternative embodiment of the device according to the invention. In this variant, the second cylinder 4 comprises two anvils 41, 42 projecting from the lateral face of the second cylinder. The two anvils extend on different radii of the cylinder bases. Each anvil extends over the entire length of the second cylinder. This allows, at equal distance between two transverse welds, to reduce by two the speed of rotation of the engine relative to a cylinder comprising only an anvil. Therefore, it is possible to use a lower power motor to drive the second cylinder in rotation. This is of significant interest. Indeed, it is recalled that one of the conditions of the device is that the cylinders are rigid. This requires the use of cylinders made of metal material having a large diameter, so that the mass of each cylinder is important. By arranging several anvils on the lateral face of the second cylinder, it is possible to reduce all the power required for the motor which, as recalled, has a variable speed of rotation within the scope of the present invention. Referring to Figure 6, there is illustrated another variant of the device according to the invention, in which variant the second cylinder comprises four pairs of anvils 41 and 41 ', 42 and 42', 44, 45. Each anvil 41, 41 'of a pair of anvils extends over a portion of the length of the cylinder. In the context of the present invention, the term "length" of the cylinder means the distance separating the two base faces of the cylinder. The anvils of each pair of anvils 41, 41 'are aligned on the same generator. The pairs of anvils are arranged on different radii of the bases of the cylinder.

Le fait d'utiliser plusieurs enclumes de formes différentes alignées sur une même génératrice du cylindre permet de réaliser sur une même largeur de bande de film - c'est-à-dire dans une direction sensiblement perpendiculaire à leur direction de défilement - des empaquetages de conditionnement ayant des formes différentes. Le lecteur appréciera que le premier cylindre peut également comprendre une pluralité d'enclumes s'étendant sur la circonférence de sa face latérale. Ceci permet de réaliser plusieurs soudures longitudinales intermédiaires. Ces soudures intermédiaires délimitent plusieurs canaux, destinées à être remplis par le produit à conditionner. Le nombre de cavités pratiquées détermine le nombre de conditionnements final obtenu sur la largeur des bandes de film. The fact of using several anvils of different shapes aligned on one and the same generatrix of the cylinder makes it possible to produce on the same width of the filmstrip - that is to say in a direction substantially perpendicular to their direction of travel - packaging of conditioning having different shapes. The reader will appreciate that the first cylinder may also include a plurality of anvils extending about the circumference of its side face. This allows for several intermediate longitudinal welds. These intermediate welds delimit several channels, intended to be filled by the product to be packaged. The number of cavities practiced determines the final number of packs obtained over the width of the film strips.

Dans un mode de réalisation avantageux de l'invention, les enclumes des premier et deuxième cylindres sont démontable des cylindres. Ceci permet de faire varier les dimensions des empaquetages de conditionnement à souder sans nécessiter de démonter totalement les cylindres. In an advantageous embodiment of the invention, the anvils of the first and second cylinders are removable cylinders. This makes it possible to vary the dimensions of the packaging packages to be welded without the need to completely disassemble the cylinders.

Comme illustré aux figures 8 et 9, chaque enclume du deuxième cylindre peut être de forme symétrique ou non par rapport à un plan P passant par l'axe de révolution du deuxième cylindre et par le milieu de l'enclume. En effet, on rappelle que l'enclume du deuxième cylindre permet la réalisation d'une soudure transversale de fin permettant de sceller un sachet et une soudure transversale de début correspondant au fond du sachet suivant. Lorsque le sachet a une forme symétrique, on utilisera avantageusement une enclume de forme symétrique par rapport au plan P comme illustré à la 7. Lorsque le sachet à réaliser aura une forme asymétrique (par exemple pour les sachets dont les soudures représentent une bouteille), on utilisera avantageusement une enclume non symétrique par rapport au plan P. As illustrated in Figures 8 and 9, each anvil of the second cylinder may be of symmetrical shape or not with respect to a plane P passing through the axis of revolution of the second cylinder and the middle of the anvil. Indeed, it is recalled that the anvil of the second cylinder allows the realization of a transverse end weld for sealing a bag and a beginning transverse weld corresponding to the bottom of the next bag. When the bag has a symmetrical shape, it will be advantageous to use an anvil of symmetrical shape with respect to the plane P as illustrated in 7. When the bag to be made will have an asymmetrical shape (for example for bags with welds representing a bottle), a non-symmetrical anvil with respect to the plane P is advantageously used.

En référence à la figure 10, on a illustré un mode de réalisation du dispositif selon l'invention dans lequel le deuxième cylindre est associé à deux sonotrodes disposées en regard. Ceci permet d'augmenter la longueur du cylindre, ou d'utiliser des sonotrodes de plus petites dimensions pour diminuer la puissance nécessaire à la vibration des sonotrodes. Referring to Figure 10, there is illustrated an embodiment of the device according to the invention wherein the second cylinder is associated with two sonotrodes arranged opposite. This makes it possible to increase the length of the cylinder, or to use smaller sonotrodes to reduce the power necessary for the vibration of the sonotrodes.

En référence à la figure 11, on a illustré un mode de réalisation dans lequel la deuxième sonotrode 6 est montée rotative. Plus précisément la deuxième sonotrode 6 est monté sur un cylindre 61 entraîné par exemple par un moteur électrique. L'homme du métier aura compris que de nombreuses modifications peuvent être apportées au dispositif et au procédé décrit ci-dessus sans sortir matériellement des nouveaux enseignements présentés ici. Il est donc bien évident que les exemples qui viennent d'être donnés ne sont que des illustrations particulières en aucun cas limitatives. Par exemple, le dispositif ci-dessus décrit pour souder une (ou plusieurs) bande(s) de film le long de soudures transversales et longitudinale(s) pour fabriquer un empaquetage de conditionnement peut également être utilisé pour réaliser des découpes par ultrason. 10 15 20 25 30 Referring to Figure 11, there is illustrated an embodiment wherein the second sonotrode 6 is rotatably mounted. More precisely the second sonotrode 6 is mounted on a cylinder 61 driven for example by an electric motor. Those skilled in the art will have understood that many modifications can be made to the device and the method described above without physically going out of the new teachings presented here. It is therefore obvious that the examples which have just been given are only particular illustrations that are in no way limiting. For example, the above-described device for welding one (or more) film web (s) along transverse and longitudinal welds (s) to make a packaging package can also be used to make ultrasound cuts. 10 15 20 25 30

Claims (10)

REVENDICATIONS1. Dispositif de fabrication d'un empaquetage de conditionnement à partir d'au moins une bande de film (3', 3") entraînée par des moyens d'entraînement (7) 5 selon une direction de défilement (y), caractérisé en ce que le dispositif comprend au moins deux cylindres rotatifs (3, 4) d'axes de révolution (A-A', B-B') perpendiculaires à la direction de défilement (v) de la bande de film : - le premier cylindre (3) comportant sur sa face latérale (30) au moins une enclume (31, 32) faisant saillie et s'étendant sur la circonférence du premier cylindre (3), le premier cylindre (3) étant disposé en regard d'au moins une première sonotrode (5) et la bande de film (3', 3") défilant entre le premier cylindre (3) et la première sonotrode (5) pour le soudage de la bande de film (3', 3") par ultrason le long d'au moins une bande de soudage longitudinal (8, 8 , - le deuxième cylindre (4) comportant sur sa face latérale (40) au moins une enclume (41) faisant saillie et s'étendant parallèlement à l'axe (B-B') du deuxième cylindre (4), le deuxième cylindre (4) étant disposé en regard d'au moins une deuxième sonotrode (6) et la bande de film (3', 3") défilant entre le deuxième cylindre (4) et la deuxième sonotrode (6) pour le soudage de la bande de film (3', 3") par ultrason le long d'au moins une bande de soudage transversale (9, 9'), la rotation du deuxième cylindre (4) étant commandée par des moyens de commande (44) entre des première et deuxième vitesses angulaires lors de chaque révolution du deuxième cylindre. REVENDICATIONS1. Apparatus for manufacturing a packaging packaging from at least one film web (3 ', 3 ") driven by drive means (7) in a traveling direction (y), characterized in that the device comprises at least two rotary cylinders (3, 4) of axes of revolution (A-A ', B-B') perpendicular to the running direction (v) of the film strip: - the first cylinder (3 ) having on its lateral face (30) at least one anvil (31, 32) protruding and extending on the circumference of the first cylinder (3), the first cylinder (3) being arranged facing at least a first sonotrode (5) and the film strip (3 ', 3 ") running between the first cylinder (3) and the first sonotrode (5) for welding the film strip (3', 3") by ultrasound along at least one longitudinal welding strip (8, 8), the second cylinder (4) having on its lateral face (40) at least one anvil (41) projecting and extending by parallel to the axis (B-B ') of the second cylinder (4), the second cylinder (4) being arranged facing at least a second sonotrode (6) and the film strip (3', 3 ") moving between the second cylinder (4) and the second sonotrode (6) for welding the film web (3 ', 3 ") by ultrasound along at least one transverse welding strip (9, 9'), the rotation of the second cylinder (4) being controlled by control means (44) between first and second angular velocities during each revolution of the second cylinder. 2. Dispositif selon la revendication 1, caractérisé en ce que la vitesse tangentielle de l'enclume associée à la deuxième vitesse angulaire du cylindre est égale à la vitesse de défilement du film. 2. Device according to claim 1, characterized in that the tangential velocity of the anvil associated with the second angular velocity of the cylinder is equal to the running speed of the film. 3. Dispositif selon l'une des revendications 1 à 2, caractérisé en ce que le deuxième cylindre comprend au moins deux enclumes, les deux enclumes s'étendant sur des rayons différents du cylindre. 3. Device according to one of claims 1 to 2, characterized in that the second cylinder comprises at least two anvils, the two anvils extending on different radii of the cylinder. 4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que le deuxième cylindre comprend au moins deux enclumes s'étendant sur une portion de la longueur du deuxième cylindre, les deux enclumes étant alignées sur une même génératrice du deuxième cylindre. 4. Device according to one of claims 1 to 3, characterized in that the second cylinder comprises at least two anvils extending over a portion of the length of the second cylinder, the two anvils being aligned on the same generatrix of the second cylinder . 5. Dispositif selon l'une des revendications, caractérisé en ce que les enclumes sont démontables. 5. Device according to one of claims, characterized in that the anvils are removable. 6. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que les 10 enclumes du deuxième cylindre sont de forme différentes. 6. Device according to one of claims 1 to 5, characterized in that the anvils of the second cylinder are of different shape. 7. Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que chaque enclume a une forme non symétrique par rapport à un plan P passant par l'axe de rotation du deuxième cylindre. 7. Device according to one of claims 1 to 6, characterized in that each anvil has a non-symmetrical shape with respect to a plane P passing through the axis of rotation of the second cylinder. 8. Dispositif selon l'une des revendications 1 à 7, caractérisé en ce qu'il comprend plusieurs sonotrodes en regard du deuxième cylindre. 8. Device according to one of claims 1 to 7, characterized in that it comprises a plurality of sonotrodes facing the second cylinder. 9. Dispositif selon l'une des revendications 1 à 8, caractérisé en ce que chaque 20 sonotrode est entraînée en rotation autour d'un axe de rotation par des moyens moteur, lesdits moyens moteur permettant une rotation synchrone de la sonotrode avec le deuxième cylindre. 9. Device according to one of claims 1 to 8, characterized in that each sonotrode is rotated about an axis of rotation by motor means, said motor means for synchronous rotation of the sonotrode with the second cylinder . 10. Procédé de fabrication d'un empaquetage de conditionnement à partir d'au 25 moins une bande de film entraînée par des moyens d'entraînement selon une direction de défilement, caractérisé en ce que le procédé comprend la mise en rotation d'au moins deux cylindres rotatifs d'axes de révolution perpendiculaires à la direction de défilement du film : 30 - le premier cylindre comportant sur sa face latérale au moins une enclume faisant sailli et s'étendant sur la circonférence du premier cylindre, le premier cylindre étant disposé en regard d'au moins une première sonotrode et la bande de film défilant entre le premier cylindre et la première 15 510sonotrode pour le soudage de la bande de film par ultrason le long d'au moins une bande de soudage longitudinal, - le deuxième cylindre comportant sur sa face latérale au moins une enclume faisant sailli et s'étendant parallèlement à l'axe du deuxième cylindre, le deuxième cylindre étant disposé en regard d'au moins une deuxième sonotrode et la bande de film défilant entre le deuxième cylindre et la deuxième sonotrode pour le soudage de la bande de film par ultrason le long d'au moins une bande de soudage transversale, la rotation du deuxième cylindre étant commandée par des moyens de commande entre des première et deuxième vitesses angulaires lors de chaque révolution du deuxième cylindre. A method of manufacturing a packaging packaging from at least one film web driven by drive means in a running direction, characterized in that the method comprises rotating at least one two rotary cylinders of axes of revolution perpendicular to the running direction of the film: the first cylinder having on its lateral face at least one anvil protruding and extending on the circumference of the first cylinder, the first cylinder being disposed in at least one first sonotrode and the strip of film moving between the first cylinder and the first 510sonotrode for welding the ultrasound film strip along at least one longitudinal welding strip, the second cylinder comprising on its lateral face at least one anvil protruding and extending parallel to the axis of the second cylinder, the second cylinder being arranged opposite the oins a second sonotrode and the strip of film moving between the second cylinder and the second sonotrode for welding the ultrasound film strip along at least one transverse welding strip, the rotation of the second cylinder being controlled by means control between first and second angular velocities during each revolution of the second cylinder.
FR0958442A 2009-11-27 2009-11-27 DEVICE FOR MANUFACTURING ULTRASOUND PACKAGING PACKAGING Expired - Fee Related FR2953200B1 (en)

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ITMI20120292A1 (en) * 2012-02-27 2013-08-28 Altopack Spa VERTICAL FLOW PACKAGING MACHINE FOR FOOD PASTA OR SIMILAR PRODUCTS WITH ULTRASONIC TRANSVERSAL WELDING UNIT.
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FR3069455A1 (en) * 2017-07-28 2019-02-01 Novares France METHOD FOR MARKING A LAIZE BY USE OF ULTRASOUND

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