WO2008059352A1 - Ultrasound longitudinal sealing unit for producing continuous tubular strips - Google Patents

Ultrasound longitudinal sealing unit for producing continuous tubular strips Download PDF

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Publication number
WO2008059352A1
WO2008059352A1 PCT/IB2007/003483 IB2007003483W WO2008059352A1 WO 2008059352 A1 WO2008059352 A1 WO 2008059352A1 IB 2007003483 W IB2007003483 W IB 2007003483W WO 2008059352 A1 WO2008059352 A1 WO 2008059352A1
Authority
WO
WIPO (PCT)
Prior art keywords
unit
axis
anvil
packing path
longitudinal
Prior art date
Application number
PCT/IB2007/003483
Other languages
French (fr)
Inventor
Roberto Ghiotti
Fulvio Boldrini
Original Assignee
Azionaria Costruzioni Macchine Automatiche A.C.M.A. S.P.A.
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 Azionaria Costruzioni Macchine Automatiche A.C.M.A. S.P.A. filed Critical Azionaria Costruzioni Macchine Automatiche A.C.M.A. S.P.A.
Priority to EP07848888A priority Critical patent/EP2101985A1/en
Publication of WO2008059352A1 publication Critical patent/WO2008059352A1/en

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
    • 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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/36—Bending and joining, e.g. for making hollow articles
    • B29C53/38—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges
    • B29C53/48—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of indefinite length, i.e. bending a strip progressively
    • B29C53/52—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of indefinite length, i.e. bending a strip progressively using external forming surfaces, e.g. sleeves
    • 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
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7858—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus characterised by the feeding movement of the parts to be joined
    • B29C65/7888—Means for handling of moving sheets or webs
    • B29C65/7894—Means for handling of moving sheets or webs of continuously moving sheets or 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
    • B29C66/01—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
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/133—Fin-type joints, the parts to be joined being flexible
    • 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
    • B29C66/40—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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • 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
    • B29C66/81—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
    • B29C66/8161—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 said pressing elements being supported or backed-up by springs or by resilient material
    • 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
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/822—Transmission mechanisms
    • B29C66/8221—Scissor or lever mechanisms, i.e. involving a pivot point
    • 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
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B29C66/83413—Roller, cylinder or drum types cooperating 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
    • 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
    • B29C66/836—Moving relative to and tangentially to the parts to be joined, e.g. transversely to the displacement of the parts to be joined, e.g. using a X-Y table
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/849—Packaging machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/22—Applying or generating heat or pressure or combinations thereof by friction or ultrasonic or high-frequency electrical means, i.e. by friction or ultrasonic or induction welding
    • B65B51/225—Applying or generating heat or pressure or combinations thereof by friction or ultrasonic or high-frequency electrical means, i.e. by friction or ultrasonic or induction welding by ultrasonic welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • 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
    • B65B9/06—Enclosing successive articles, or quantities of material, in a longitudinally-folded web, or in a web folded into a tube about the articles or quantities of material placed upon it
    • B65B9/067—Enclosing successive articles, or quantities of material, in a longitudinally-folded web, or in a web folded into a tube about the articles or quantities of material placed upon it the web advancing continuously
    • 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
    • B29C65/743—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 the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc
    • B29C65/7443—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 the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc by means of 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
    • 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
    • B29C66/81433—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned
    • B29C66/81435—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned comprising several parallel ridges, e.g. for crimping

Definitions

  • the present invention relates to an ultrasound longitudinal sealing unit for producing continuous tubular strips .
  • a continuous strip of thermoplastic material is fed along the path of an orderly succession of products to a longitudinal sealing unit, which folds the continuous strip gradually into a U about the succession of products, so that two longitudinal lateral portions of the continuous strip are located on the same side of the succession of products.
  • the two continuous longitudinal portions are then brought into contact with each other to define a longitudinal rib of a tube housing the products equally spaced along the tube.
  • the longitudinal sealing unit comprises a sealing device, by which the portions forming the longitudinal rib are sealed to each other to form a continuous tubular strip sealed laterally and enclosing the succession of products.
  • the longitudinal rib is known to be sealed using an ultrasound sealing device mounted with its sonotrode directed perpendicularly to the product path and with its vibrating active surface substantially contacting an anvil located, in use, on the opposite side of the longitudinal rib to the active surface of the sonotrode.
  • the anvil once set in position, is normally a fixed anvil connected rigidly to a support, is subjected to severe vibration transmitted by the sonotrode, and fails to ensure sufficient long-term sealing pressure on the rib.
  • an ultrasound sealing unit for producing continuous tubular strips as claimed in Claim 1 or, preferably, in any one of the following Claims depending directly or indirectly on Claim 1.
  • Figure 1 shows a schematic view in perspective, with parts removed for clarity, of an FFS machine comprising an ultrasound sealing unit;
  • Figure 2 shows a partly sectioned plan view of a first preferred embodiment of the ultrasound sealing unit according to the present invention
  • Figure 3 shows an underside view in perspective, with parts removed for clarity, of the Figure 2 sealing unit
  • Figure 4 shows a partly sectioned plan view of a second preferred embodiment of the ultrasound sealing unit according to the present invention.
  • Number 1 in Figure 1 indicates as a whole an FFS (Form, Fill and Seal) machine, in which an orderly succession of products 2 is fed at a given constant speed along a -packing path P, together with a continuous strip 3, which is guided by a guide roller 4 onto packing path P and over the succession of products 2, and is then fed along packing path P together with, and at the same speed as , products 2.
  • FFS Form, Fill and Seal
  • packing path P Downstream from guide roller 4, packing path P extends through a longitudinal sealing unit 5 where continuous strip 3 is first folded into a U about the succession of products 2, and is then sealed longitudinally to form a continuous tubular strip 6 housing the succession of products 2.
  • packing path P extends through a known seal-and-cut station 7, where machine 1 comprises a rotary ultrasound sealing assembly 8, which both seals and- cuts tubular strip 6 along sealing areas crosswise to the axis of continuous tubular strip 6, and each located along a respective portion of continuous tubular strip 6 located between a respective pair of adjacent products 2, to form a succession of sealed packages 9 containing respective products 2.
  • machine 1 comprises a rotary ultrasound sealing assembly 8, which both seals and- cuts tubular strip 6 along sealing areas crosswise to the axis of continuous tubular strip 6, and each located along a respective portion of continuous tubular strip 6 located between a respective pair of adjacent products 2, to form a succession of sealed packages 9 containing respective products 2.
  • longitudinal sealing unit 5 comprises a folding device 10, in turn comprising two helical folders 11, which are located on opposite sides of packing path P, immediately downstream from guide roller 4 in the travelling direction 12 of continuous strip 3 along packing path P, and cooperate with continuous strip 3 to fold it into a U over products 2, so that two opposite longitudinal lateral portions 13 of continuous strip 3 project beneath products 2.
  • Longitudinal sealing ⁇ unit 5 also comprises a traction assembly 14 located immediately downstream from folding device 10 in direction 12, and which engages continuous strip 3 to feed it along at the same speed as products 2. More specifically, traction assembly 14 comprises two powered disks 15 located on opposite sides of packing path P, and which rotate in opposite directions, about respective axes 16 crosswise to direction 12, to grip and fold the two longitudinal lateral portions 13 one onto the other to define, with the two longitudinal lateral portions 13, a continuous longitudinal rib 17, which is stabilized, by sealing longitudinal lateral portions 13 to each other, as continuous strip 3 travels through an ultrasound sealing device 18 described below, to form continuous tubular strip 6.
  • longitudinal sealing unit 5 Downstream from sealing device 18, longitudinal sealing unit 5 comprises a further traction assembly 19 comprising two powered disks 20 located on opposite sides of packing path P, and which rotate in opposite directions, about respective axes 21 crosswise to direction 12, to grip longitudinal rib 17, to keep the portion of continuous tubular strip 6 extending through sealing device 18 taut, and to press the newly sealed longitudinal lateral portions 13 against one another to ensure firm adhesion.
  • the lateral surface of each disk 20 has annular ribs, which mesh with the annular ribs on the other disk 20 to impart an undulated profile to longitudinal rib 17.
  • longitudinal sealing unit 5 also comprises a known folding device 22, in which two disks 23, rotating in opposite directions about respective axes 24 parallel to axes 21, engage longitudinal rib 17 to fold it squarely onto the outer surface of continuous tubular strip 6.
  • Sealing device 18 comprises two brackets 25, 26 fitted in respective fixed positions on opposite sides of packing path P.
  • bracket 25 supports a sonotrode 28 located along an axis 29 perpendicular to direction 12 and to axes 16, 21, 24, and having an activating device 30 and possibly an amplifying device 31, both aligned with sonotrode 28 along axis 29.
  • Sonotrode 28 also comprises a horn 32, an active end surface 33 of which is tangent to packing path P. If the size of horn 32 needs no correction or amplification when activating device 30 is operative, device 31 may be omitted.
  • Bracket 26 supports a plate 34 parallel to axis 29 and fitted integrally with a wall 35 perpendicular to axis 29 and having a threaded through hole 36 coaxial with axis 29.
  • plate 34 supports an anvil 37, which is bounded laterally, on one side, by a curved contrasting surface 38 tangent to packing path P and facing active surface 33 of horn 32, and, on the opposite side, by a flat surface 39.
  • Anvil 37 is hinged to plate 34 to oscillate, with respect to plate 34, about an axis 40 parallel to axes 16, 21, 24 and offset laterally with respect to axis 29, and is pushed towards horn 32 by an adjustable push device 41 fitted through hole 36 and comprising an externally threaded sleeve 42, which is fitted in an axially adjustable position through hole 36, has one end facing flat surface 39 of anvil 37, and is closed at the opposite end by a removable plug 43.
  • Push device 41 also comprises a helical spring 44 fitted, coaxially with axis 29, inside sleeve 42 and compressed between plug 43 and the bottom of a recess 45 formed along flat surface 39.
  • the position of plate 34 with respect to bracket 26 is adjustable in a direction parallel to axis 29 by an adjusting and lock device 46 comprising a number of slots 47 formed through plate 34 and parallel to axis 29, and a number of screws 48, each of which fits through a respective slot 47 and engages a respective threaded hole (not shown) formed through bracket 26.
  • anvil 37 In actual use, once set in position by adjusting and lock device 46, anvil 37, by virtue of push device 41, performs like a "spring-mounted" anvil, which, as of the set position, is allowed a relatively small amount of travel, of about a millimetre, in a direction substantially perpendicular ⁇ - to packing path P, and in opposition to spring 44, which damps the vibration transmitted to anvil 37 by contact with sonotrode 28, and, at the same time, automatically adjusts the contact pressure between sonotrode 28 and anvil 37 during the sealing operation.
  • Figure 4 shows a longitudinal sealing unit 5 comprising a sealing device 49, which differs from sealing device 18 solely by having a plate 50, which is mounted to oscillate about axis 40, is interposed between spring 44 and packing path P, supports a "spring-mounted" rotary anvil 52, and cooperates laterally with a stop 51 allowing a given oscillation of plate 50 by spring 44 towards packing path P.
  • Rotary anvil 52 is defined by a wheel, which is fitted idly on a pin 53 integral with plate 50, parallel to axes 16, and intersecting axis 29, and has an outer cylindrical contrasting surface 54 tangent to packing path P.
  • Each of contrasting surfaces 38, 54 generally comprises longitudinal ribs (not shown) , which, in the case of contrasting surface 38, extend in a longitudinal direction substantially parallel to packing path P, and, in the case of contrasting surface 54, extend about the axis of pin 53.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Package Closures (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

An ultrasound longitudinal sealing unit (5) for producing continuous tubular strips (6), wherein a continuous strip (3), as it travels along a packing path (P), is folded transversely into a U, and two longitudinal lateral portions (13) of the continuous strip are brought together and sealed to each other longitudinally to define a continuous tubular strip (6) having a longitudinal rib (17) extending along the packing path (P); the unit (5) having, to make the longitudinal seal, an ultrasound sealing device (18; 49) having a sonotrode (28) and an anvil (37; 52) on opposite sides of the packing path (P), and wherein the anvil (37; 52) is mounted to oscillate to and from the sonotrode (28) about an axis (40) crosswise to the packing path (P), and in opposition to and by virtue of elastic means (44) respectively.

Description

ULTRASOUM) LONGITUDINAL SEALING UNIT FOR PRODUCING CONTINUOUS TUBULAR STRIPS
TECHNICAL FIELD
The present invention relates to an ultrasound longitudinal sealing unit for producing continuous tubular strips .
BACKGROUND ART As is known, from WO 02/102664, for example, in FFS
(Form, Fill and Seal) machines, a continuous strip of thermoplastic material is fed along the path of an orderly succession of products to a longitudinal sealing unit, which folds the continuous strip gradually into a U about the succession of products, so that two longitudinal lateral portions of the continuous strip are located on the same side of the succession of products. The two continuous longitudinal portions are then brought into contact with each other to define a longitudinal rib of a tube housing the products equally spaced along the tube. The longitudinal sealing unit comprises a sealing device, by which the portions forming the longitudinal rib are sealed to each other to form a continuous tubular strip sealed laterally and enclosing the succession of products.
The longitudinal rib is known to be sealed using an ultrasound sealing device mounted with its sonotrode directed perpendicularly to the product path and with its vibrating active surface substantially contacting an anvil located, in use, on the opposite side of the longitudinal rib to the active surface of the sonotrode.
In known sealing devices of the above type, the anvil, once set in position, is normally a fixed anvil connected rigidly to a support, is subjected to severe vibration transmitted by the sonotrode, and fails to ensure sufficient long-term sealing pressure on the rib.
DISCLOSURE OF INVENTION It is an object of the present invention to provide an ultrasound sealing unit designed to eliminate the aforementioned drawback.
According to the present invention, there is provided an ultrasound sealing unit for producing continuous tubular strips, as claimed in Claim 1 or, preferably, in any one of the following Claims depending directly or indirectly on Claim 1.
BRIEF DESCRIPTION OF THE DRAWINGS
A number of non-limiting embodiments of the present invention will be described by way of example with reference to the accompanying drawings, in which:
Figure 1 shows a schematic view in perspective, with parts removed for clarity, of an FFS machine comprising an ultrasound sealing unit;
Figure 2 shows a partly sectioned plan view of a first preferred embodiment of the ultrasound sealing unit according to the present invention; Figure 3 shows an underside view in perspective, with parts removed for clarity, of the Figure 2 sealing unit;
Figure 4 shows a partly sectioned plan view of a second preferred embodiment of the ultrasound sealing unit according to the present invention.
BEST MODE FOR CARRYING OUT THE INVENTION
Number 1 in Figure 1 indicates as a whole an FFS (Form, Fill and Seal) machine, in which an orderly succession of products 2 is fed at a given constant speed along a -packing path P, together with a continuous strip 3, which is guided by a guide roller 4 onto packing path P and over the succession of products 2, and is then fed along packing path P together with, and at the same speed as , products 2. Downstream from guide roller 4, packing path P extends through a longitudinal sealing unit 5 where continuous strip 3 is first folded into a U about the succession of products 2, and is then sealed longitudinally to form a continuous tubular strip 6 housing the succession of products 2.
Downstream from longitudinal sealing unit 5, packing path P extends through a known seal-and-cut station 7, where machine 1 comprises a rotary ultrasound sealing assembly 8, which both seals and- cuts tubular strip 6 along sealing areas crosswise to the axis of continuous tubular strip 6, and each located along a respective portion of continuous tubular strip 6 located between a respective pair of adjacent products 2, to form a succession of sealed packages 9 containing respective products 2.
As shown in Figure 2, longitudinal sealing unit 5 comprises a folding device 10, in turn comprising two helical folders 11, which are located on opposite sides of packing path P, immediately downstream from guide roller 4 in the travelling direction 12 of continuous strip 3 along packing path P, and cooperate with continuous strip 3 to fold it into a U over products 2, so that two opposite longitudinal lateral portions 13 of continuous strip 3 project beneath products 2.
Longitudinal sealing ■ unit 5 also comprises a traction assembly 14 located immediately downstream from folding device 10 in direction 12, and which engages continuous strip 3 to feed it along at the same speed as products 2. More specifically, traction assembly 14 comprises two powered disks 15 located on opposite sides of packing path P, and which rotate in opposite directions, about respective axes 16 crosswise to direction 12, to grip and fold the two longitudinal lateral portions 13 one onto the other to define, with the two longitudinal lateral portions 13, a continuous longitudinal rib 17, which is stabilized, by sealing longitudinal lateral portions 13 to each other, as continuous strip 3 travels through an ultrasound sealing device 18 described below, to form continuous tubular strip 6. Downstream from sealing device 18, longitudinal sealing unit 5 comprises a further traction assembly 19 comprising two powered disks 20 located on opposite sides of packing path P, and which rotate in opposite directions, about respective axes 21 crosswise to direction 12, to grip longitudinal rib 17, to keep the portion of continuous tubular strip 6 extending through sealing device 18 taut, and to press the newly sealed longitudinal lateral portions 13 against one another to ensure firm adhesion. For which purpose, the lateral surface of each disk 20 has annular ribs, which mesh with the annular ribs on the other disk 20 to impart an undulated profile to longitudinal rib 17.
Finally, longitudinal sealing unit 5 also comprises a known folding device 22, in which two disks 23, rotating in opposite directions about respective axes 24 parallel to axes 21, engage longitudinal rib 17 to fold it squarely onto the outer surface of continuous tubular strip 6.
Sealing device 18 comprises two brackets 25, 26 fitted in respective fixed positions on opposite sides of packing path P. By means of a casing 27, bracket 25 supports a sonotrode 28 located along an axis 29 perpendicular to direction 12 and to axes 16, 21, 24, and having an activating device 30 and possibly an amplifying device 31, both aligned with sonotrode 28 along axis 29. Sonotrode 28 also comprises a horn 32, an active end surface 33 of which is tangent to packing path P. If the size of horn 32 needs no correction or amplification when activating device 30 is operative, device 31 may be omitted. Bracket 26, on the other hand, supports a plate 34 parallel to axis 29 and fitted integrally with a wall 35 perpendicular to axis 29 and having a threaded through hole 36 coaxial with axis 29. In the gap between wall 35 and packing path P, plate 34 supports an anvil 37, which is bounded laterally, on one side, by a curved contrasting surface 38 tangent to packing path P and facing active surface 33 of horn 32, and, on the opposite side, by a flat surface 39. Anvil 37 is hinged to plate 34 to oscillate, with respect to plate 34, about an axis 40 parallel to axes 16, 21, 24 and offset laterally with respect to axis 29, and is pushed towards horn 32 by an adjustable push device 41 fitted through hole 36 and comprising an externally threaded sleeve 42, which is fitted in an axially adjustable position through hole 36, has one end facing flat surface 39 of anvil 37, and is closed at the opposite end by a removable plug 43. Push device 41 also comprises a helical spring 44 fitted, coaxially with axis 29, inside sleeve 42 and compressed between plug 43 and the bottom of a recess 45 formed along flat surface 39. The position of plate 34 with respect to bracket 26 is adjustable in a direction parallel to axis 29 by an adjusting and lock device 46 comprising a number of slots 47 formed through plate 34 and parallel to axis 29, and a number of screws 48, each of which fits through a respective slot 47 and engages a respective threaded hole (not shown) formed through bracket 26.
In actual use, once set in position by adjusting and lock device 46, anvil 37, by virtue of push device 41, performs like a "spring-mounted" anvil, which, as of the set position, is allowed a relatively small amount of travel, of about a millimetre, in a direction substantially perpendicular^- to packing path P, and in opposition to spring 44, which damps the vibration transmitted to anvil 37 by contact with sonotrode 28, and, at the same time, automatically adjusts the contact pressure between sonotrode 28 and anvil 37 during the sealing operation. That is, since the thickness of the material between sonotrode 28 and anvil 37 is reduced by plasticization of the material, so that anvil 37 moves closer to sonotrode 28, the pressure exchanged between sonotrode 28 and anvil 37 and due to spring 44 is also reduced gradually and automatically as plasticization proceeds, thus preventing excessive pressure and, hence, weakening of longitudinal rib 17.
Figure 4 shows a longitudinal sealing unit 5 comprising a sealing device 49, which differs from sealing device 18 solely by having a plate 50, which is mounted to oscillate about axis 40, is interposed between spring 44 and packing path P, supports a "spring-mounted" rotary anvil 52, and cooperates laterally with a stop 51 allowing a given oscillation of plate 50 by spring 44 towards packing path P. Rotary anvil 52 is defined by a wheel, which is fitted idly on a pin 53 integral with plate 50, parallel to axes 16, and intersecting axis 29, and has an outer cylindrical contrasting surface 54 tangent to packing path P. Each of contrasting surfaces 38, 54 generally comprises longitudinal ribs (not shown) , which, in the case of contrasting surface 38, extend in a longitudinal direction substantially parallel to packing path P, and, in the case of contrasting surface 54, extend about the axis of pin 53.

Claims

1) An ultrasound longitudinal sealing unit for producing continuous tubular strips (6); the unit comprising first folding means (10) for transversely folding into a U a continuous strip (3) travelling along a packing path (P); second folding means (14) for folding two opposite longitudinal portions (13) of the continuous strip (3) one onto the other to define a continuous tubular strip (6) having a longitudinal rib
(17) extending along the packing path (P); and an ultrasound sealing device (18; 49), which acts on the longitudinal rib (17) to seal the two longitudinal portions (13) to each other; the sealing device (18; 49) comprising a sonotrode (28) and an anvil (37; 52) on opposite sides of the packing path (P) ; and the unit (5) being characterized in that the anvil (37; 52) is an anvil (37; 52) mounted to oscillate to and from the sonotrode (28) about a first axis (40) crosswise to the packing path (P) , and in opposition to and by virtue of elastic means (44) respectively.
2) A unit as claimed in Claim 1, wherein the sealing device (18; 49) comprises a support (34; 50) for the anvil (37; 52) ; the elastic means (44) being interposed between the support (34; 50) and the anvil (37; 52) .
3) A unit as claimed in Claim 2, wherein adjusting and lock means (46) adjust and lock the support (34; 50) in position with respect to the packing path (P) .
4) A unit as claimed in one of the foregoing Claims, wherein the elastic means (44) are calibrated, adjustable-thrust elastic means. 5) A unit as claimed in one of the foregoing Claims, wherein the sonotrode (28) has a second axis (29) offset with respect to the first axis (40) and crosswise to the first axis (40); and the elastic means (44) act along the first axis (40) . 6) A unit as claimed in one of the foregoing Claims, wherein the anvil (37) is a lever hinged to oscillate about the first axis (40) , and having a first lateral surface (39) cooperating with the elastic means (44), and a second lateral surface opposite the first lateral surface (39) and defining a contrasting surface (38) facing the sonotrode (28) .
7) A unit as claimed in Claim 6, wherein the contrasting surface (38) is a curved surface.
8) A unit as claimed in one of Claims 1 to 5, and comprising a plate (50), which is mounted to oscillate about the first axis (40) , cooperates with the elastic means (44) , is interposed between the elastic means (44) and the packing path (P) , and supports a rotary anvil (52) defined by a wheel mounted to rotate idly about a third axis (53) integral with the plate (50) and parallel to the first axis (40); a lateral surface of the wheel defining a contrasting surface (54) of the rotary anvil (52) . 9) An FFS (Form, Fill and Seal) machine comprising an ultrasound longitudinal sealing unit (5) , as claimed in any one of the foregoing Claims .
PCT/IB2007/003483 2006-11-15 2007-11-14 Ultrasound longitudinal sealing unit for producing continuous tubular strips WO2008059352A1 (en)

Priority Applications (1)

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ITBO2006A000778 2006-11-15
IT000778A ITBO20060778A1 (en) 2006-11-15 2006-11-15 ULTRASONIC LONGITUDINAL WELDING UNIT FOR THE FORMATION OF CONTINUOUS TUBULAR RIBBONS

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EP2310275A1 (en) * 2008-06-16 2011-04-20 Top Wire Co., Ltd. The packing instrument for a bookbinding spring
EP2310275A4 (en) * 2008-06-16 2015-03-25 James Burn Internat Sas The packing instrument for a bookbinding spring
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EP2484511A1 (en) * 2011-02-03 2012-08-08 Mv 2 Ultrasonic welding device
CN102490358B (en) * 2011-12-06 2014-04-09 中国科学院遗传与发育生物学研究所 Ultrasonic compressing water spraying belt production method and equipment
CN102490358A (en) * 2011-12-06 2012-06-13 中国科学院遗传与发育生物学研究所 Ultrasonic compressing water spraying belt production method and equipment
WO2014206732A1 (en) * 2013-06-28 2014-12-31 Robert Bosch Gmbh Method for joining a sealing seam of a tubular bag packaging by means of an ultrasound applicator and longitudinal seal joining device for use with said method
US9993967B2 (en) 2013-06-28 2018-06-12 Robert Bosch Gmbh Method for joining a sealing seam of a tubular bag packaging by means of an ultrasound applicator and longitudinal seal joining device for use with said method
US20180362201A1 (en) * 2015-06-29 2018-12-20 Sig Technology Ag Device for Processing, in Particular for Ultrasound Welding, of Packaging Sleeves
US10625893B2 (en) * 2015-06-29 2020-04-21 Sig Technology Ag Device for processing, in particular for ultrasound welding, of packaging sleeves
NL2028944B1 (en) * 2021-08-10 2023-02-22 Verhuur & Verkoop Klus Nl B V Heat sealing device for flowpack packaging

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